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5253 kmem_alloc/kmem_zalloc won't fail with KM_SLEEP
5254 getrbuf won't fail with KM_SLEEP
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--- old/usr/src/uts/common/avs/ns/rdc/rdc_io.c
+++ new/usr/src/uts/common/avs/ns/rdc/rdc_io.c
1 1 /*
2 2 * CDDL HEADER START
3 3 *
4 4 * The contents of this file are subject to the terms of the
5 5 * Common Development and Distribution License (the "License").
6 6 * You may not use this file except in compliance with the License.
7 7 *
8 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 9 * or http://www.opensolaris.org/os/licensing.
10 10 * See the License for the specific language governing permissions
11 11 * and limitations under the License.
12 12 *
13 13 * When distributing Covered Code, include this CDDL HEADER in each
14 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 15 * If applicable, add the following below this CDDL HEADER, with the
16 16 * fields enclosed by brackets "[]" replaced with your own identifying
17 17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 18 *
19 19 * CDDL HEADER END
20 20 */
21 21 /*
22 22 * Copyright 2009 Sun Microsystems, Inc. All rights reserved.
23 23 * Use is subject to license terms.
24 24 */
25 25
26 26 #include <sys/types.h>
27 27 #include <sys/ksynch.h>
28 28 #include <sys/cmn_err.h>
29 29 #include <sys/kmem.h>
30 30 #include <sys/conf.h>
31 31 #include <sys/errno.h>
32 32
33 33 #ifdef _SunOS_5_6
34 34 /*
35 35 * on 2.6 both dki_lock.h and rpc/types.h define bool_t so we
36 36 * define enum_t here as it is all we need from rpc/types.h
37 37 * anyway and make it look like we included it. Yuck.
38 38 */
39 39 #define _RPC_TYPES_H
40 40 typedef int enum_t;
41 41 #else
42 42 #ifndef DS_DDICT
43 43 #include <rpc/types.h>
44 44 #endif
45 45 #endif /* _SunOS_5_6 */
46 46
47 47 #include <sys/ddi.h>
48 48
49 49 #include <sys/nsc_thread.h>
50 50 #include <sys/nsctl/nsctl.h>
51 51
52 52 #include <sys/sdt.h> /* dtrace is S10 or later */
53 53
54 54 #include "rdc_io.h"
55 55 #include "rdc_bitmap.h"
56 56 #include "rdc_update.h"
57 57 #include "rdc_ioctl.h"
58 58 #include "rdcsrv.h"
59 59 #include "rdc_diskq.h"
60 60
61 61 #include <sys/unistat/spcs_s.h>
62 62 #include <sys/unistat/spcs_s_k.h>
63 63 #include <sys/unistat/spcs_errors.h>
64 64
65 65 volatile int net_exit;
66 66 nsc_size_t MAX_RDC_FBAS;
67 67
68 68 #ifdef DEBUG
69 69 int RDC_MAX_SYNC_THREADS = 8;
70 70 int rdc_maxthreads_last = 8;
71 71 #endif
72 72
73 73 kmutex_t rdc_ping_lock; /* Ping lock */
74 74 static kmutex_t net_blk_lock;
75 75
76 76 /*
77 77 * rdc_conf_lock is used as a global device configuration lock.
78 78 * It is also used by enable/resume and disable/suspend code to ensure that
79 79 * the transition of an rdc set between configured and unconfigured is
80 80 * atomic.
81 81 *
82 82 * krdc->group->lock is used to protect state changes of a configured rdc
83 83 * set (e.g. changes to urdc->flags), such as enabled to disabled and vice
84 84 * versa.
85 85 *
86 86 * rdc_many_lock is also used to protect changes in group membership. A group
87 87 * linked list cannot change while this lock is held. The many list and the
88 88 * multi-hop list are both protected by rdc_many_lock.
89 89 */
90 90 kmutex_t rdc_conf_lock;
91 91 kmutex_t rdc_many_lock; /* Many/multi-list lock */
92 92
93 93 static kmutex_t rdc_net_hnd_id_lock; /* Network handle id lock */
94 94 int rdc_debug = 0;
95 95 int rdc_debug_sleep = 0;
96 96
97 97 static int rdc_net_hnd_id = 1;
98 98
99 99 extern kmutex_t rdc_clnt_lock;
100 100
101 101 static void rdc_ditemsfree(rdc_net_dataset_t *);
102 102 void rdc_clnt_destroy(void);
103 103
104 104 rdc_k_info_t *rdc_k_info;
105 105 rdc_u_info_t *rdc_u_info;
106 106
107 107 unsigned long rdc_async_timeout;
108 108
109 109 nsc_size_t rdc_maxthres_queue = RDC_MAXTHRES_QUEUE;
110 110 int rdc_max_qitems = RDC_MAX_QITEMS;
111 111 int rdc_asyncthr = RDC_ASYNCTHR;
112 112 static nsc_svc_t *rdc_volume_update;
113 113 static int rdc_prealloc_handle = 1;
114 114
115 115 extern int _rdc_rsrv_diskq(rdc_group_t *group);
116 116 extern void _rdc_rlse_diskq(rdc_group_t *group);
117 117
118 118 /*
119 119 * Forward declare all statics that are used before defined
120 120 * to enforce parameter checking
121 121 *
122 122 * Some (if not all) of these could be removed if the code were reordered
123 123 */
124 124
125 125 static void rdc_volume_update_svc(intptr_t);
126 126 static void halt_sync(rdc_k_info_t *krdc);
127 127 void rdc_kstat_create(int index);
128 128 void rdc_kstat_delete(int index);
129 129 static int rdc_checkforbitmap(int, nsc_off_t);
130 130 static int rdc_installbitmap(int, void *, int, nsc_off_t, int, int *, int);
131 131 static rdc_group_t *rdc_newgroup();
132 132
133 133 int rdc_enable_diskq(rdc_k_info_t *krdc);
134 134 void rdc_close_diskq(rdc_group_t *group);
135 135 int rdc_suspend_diskq(rdc_k_info_t *krdc);
136 136 int rdc_resume_diskq(rdc_k_info_t *krdc);
137 137 void rdc_init_diskq_header(rdc_group_t *grp, dqheader *header);
138 138 void rdc_fail_diskq(rdc_k_info_t *krdc, int wait, int dolog);
139 139 void rdc_unfail_diskq(rdc_k_info_t *krdc);
140 140 void rdc_unintercept_diskq(rdc_group_t *grp);
141 141 int rdc_stamp_diskq(rdc_k_info_t *krdc, int rsrvd, int flags);
142 142 void rdc_qfiller_thr(rdc_k_info_t *krdc);
143 143
144 144 nstset_t *_rdc_ioset;
145 145 nstset_t *_rdc_flset;
146 146
147 147 /*
148 148 * RDC threadset tunables
149 149 */
150 150 int rdc_threads = 64; /* default number of threads */
151 151 int rdc_threads_inc = 8; /* increment for changing the size of the set */
152 152
153 153 /*
154 154 * Private threadset manipulation variables
155 155 */
156 156 static int rdc_threads_hysteresis = 2;
157 157 /* hysteresis for threadset resizing */
158 158 static int rdc_sets_active; /* number of sets currently enabled */
159 159
160 160 #ifdef DEBUG
161 161 kmutex_t rdc_cntlock;
162 162 #endif
163 163
164 164 /*
165 165 * rdc_thread_deconfigure - rdc is being deconfigured, stop any
166 166 * thread activity.
167 167 *
168 168 * Inherently single-threaded by the Solaris module unloading code.
169 169 */
170 170 static void
171 171 rdc_thread_deconfigure(void)
172 172 {
173 173 nst_destroy(_rdc_ioset);
174 174 _rdc_ioset = NULL;
175 175
176 176 nst_destroy(_rdc_flset);
177 177 _rdc_flset = NULL;
178 178
179 179 nst_destroy(sync_info.rdc_syncset);
180 180 sync_info.rdc_syncset = NULL;
181 181 }
182 182
183 183 /*
184 184 * rdc_thread_configure - rdc is being configured, initialize the
185 185 * threads we need for flushing aync volumes.
186 186 *
187 187 * Must be called with rdc_conf_lock held.
188 188 */
189 189 static int
190 190 rdc_thread_configure(void)
191 191 {
192 192 ASSERT(MUTEX_HELD(&rdc_conf_lock));
193 193
194 194 if ((_rdc_ioset = nst_init("rdc_thr", rdc_threads)) == NULL)
195 195 return (EINVAL);
196 196
197 197 if ((_rdc_flset = nst_init("rdc_flushthr", 2)) == NULL)
198 198 return (EINVAL);
199 199
200 200 if ((sync_info.rdc_syncset =
201 201 nst_init("rdc_syncthr", RDC_MAX_SYNC_THREADS)) == NULL)
202 202 return (EINVAL);
203 203
204 204 return (0);
205 205 }
206 206
207 207
208 208 /*
209 209 * rdc_thread_tune - called to tune the size of the rdc threadset.
210 210 *
211 211 * Called from the config code when an rdc_set has been enabled or disabled.
212 212 * 'sets' is the increment to the number of active rdc_sets.
213 213 *
214 214 * Must be called with rdc_conf_lock held.
215 215 */
216 216 static void
217 217 rdc_thread_tune(int sets)
218 218 {
219 219 int incr = (sets > 0) ? 1 : -1;
220 220 int change = 0;
221 221 int nthreads;
222 222
223 223 ASSERT(MUTEX_HELD(&rdc_conf_lock));
224 224
225 225 if (sets < 0)
226 226 sets = -sets;
227 227
228 228 while (sets--) {
229 229 nthreads = nst_nthread(_rdc_ioset);
230 230 rdc_sets_active += incr;
231 231
232 232 if (rdc_sets_active >= nthreads)
233 233 change += nst_add_thread(_rdc_ioset, rdc_threads_inc);
234 234 else if ((rdc_sets_active <
235 235 (nthreads - (rdc_threads_inc + rdc_threads_hysteresis))) &&
236 236 ((nthreads - rdc_threads_inc) >= rdc_threads))
237 237 change -= nst_del_thread(_rdc_ioset, rdc_threads_inc);
238 238 }
239 239
240 240 #ifdef DEBUG
241 241 if (change) {
242 242 cmn_err(CE_NOTE, "!rdc_thread_tune: "
243 243 "nsets %d, nthreads %d, nthreads change %d",
244 244 rdc_sets_active, nst_nthread(_rdc_ioset), change);
245 245 }
246 246 #endif
247 247 }
248 248
249 249
250 250 /*
251 251 * _rdc_unload() - cache is being unloaded,
252 252 * deallocate any dual copy structures allocated during cache
253 253 * loading.
254 254 */
255 255 void
256 256 _rdc_unload(void)
257 257 {
258 258 int i;
259 259 rdc_k_info_t *krdc;
260 260
261 261 if (rdc_volume_update) {
262 262 (void) nsc_unregister_svc(rdc_volume_update);
263 263 rdc_volume_update = NULL;
264 264 }
265 265
266 266 rdc_thread_deconfigure();
267 267
268 268 if (rdc_k_info != NULL) {
269 269 for (i = 0; i < rdc_max_sets; i++) {
270 270 krdc = &rdc_k_info[i];
271 271 mutex_destroy(&krdc->dc_sleep);
272 272 mutex_destroy(&krdc->bmapmutex);
273 273 mutex_destroy(&krdc->kstat_mutex);
274 274 mutex_destroy(&krdc->bmp_kstat_mutex);
275 275 mutex_destroy(&krdc->syncbitmutex);
276 276 cv_destroy(&krdc->busycv);
277 277 cv_destroy(&krdc->closingcv);
278 278 cv_destroy(&krdc->haltcv);
279 279 cv_destroy(&krdc->synccv);
280 280 }
281 281 }
282 282
283 283 mutex_destroy(&sync_info.lock);
284 284 mutex_destroy(&rdc_ping_lock);
285 285 mutex_destroy(&net_blk_lock);
286 286 mutex_destroy(&rdc_conf_lock);
287 287 mutex_destroy(&rdc_many_lock);
288 288 mutex_destroy(&rdc_net_hnd_id_lock);
289 289 mutex_destroy(&rdc_clnt_lock);
290 290 #ifdef DEBUG
291 291 mutex_destroy(&rdc_cntlock);
292 292 #endif
293 293 net_exit = ATM_EXIT;
294 294
295 295 if (rdc_k_info != NULL)
296 296 kmem_free(rdc_k_info, sizeof (*rdc_k_info) * rdc_max_sets);
297 297 if (rdc_u_info != NULL)
298 298 kmem_free(rdc_u_info, sizeof (*rdc_u_info) * rdc_max_sets);
299 299 rdc_k_info = NULL;
300 300 rdc_u_info = NULL;
301 301 rdc_max_sets = 0;
302 302 }
303 303
304 304
305 305 /*
306 306 * _rdc_load() - rdc is being loaded, Allocate anything
307 307 * that will be needed while the cache is loaded but doesn't really
308 308 * depend on configuration parameters.
309 309 *
310 310 */
311 311 int
312 312 _rdc_load(void)
313 313 {
314 314 int i;
315 315 rdc_k_info_t *krdc;
316 316
317 317 mutex_init(&rdc_ping_lock, NULL, MUTEX_DRIVER, NULL);
318 318 mutex_init(&net_blk_lock, NULL, MUTEX_DRIVER, NULL);
319 319 mutex_init(&rdc_conf_lock, NULL, MUTEX_DRIVER, NULL);
320 320 mutex_init(&rdc_many_lock, NULL, MUTEX_DRIVER, NULL);
321 321 mutex_init(&rdc_net_hnd_id_lock, NULL, MUTEX_DRIVER, NULL);
322 322 mutex_init(&rdc_clnt_lock, NULL, MUTEX_DRIVER, NULL);
323 323 mutex_init(&sync_info.lock, NULL, MUTEX_DRIVER, NULL);
324 324
325 325 #ifdef DEBUG
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325 lines elided |
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326 326 mutex_init(&rdc_cntlock, NULL, MUTEX_DRIVER, NULL);
327 327 #endif
328 328
329 329 if ((i = nsc_max_devices()) < rdc_max_sets)
330 330 rdc_max_sets = i;
331 331 /* following case for partial installs that may fail */
332 332 if (!rdc_max_sets)
333 333 rdc_max_sets = 1024;
334 334
335 335 rdc_k_info = kmem_zalloc(sizeof (*rdc_k_info) * rdc_max_sets, KM_SLEEP);
336 - if (!rdc_k_info)
337 - return (ENOMEM);
338 336
339 337 rdc_u_info = kmem_zalloc(sizeof (*rdc_u_info) * rdc_max_sets, KM_SLEEP);
340 - if (!rdc_u_info) {
341 - kmem_free(rdc_k_info, sizeof (*rdc_k_info) * rdc_max_sets);
342 - return (ENOMEM);
343 - }
344 338
345 339 net_exit = ATM_NONE;
346 340 for (i = 0; i < rdc_max_sets; i++) {
347 341 krdc = &rdc_k_info[i];
348 342 bzero(krdc, sizeof (*krdc));
349 343 krdc->index = i;
350 344 mutex_init(&krdc->dc_sleep, NULL, MUTEX_DRIVER, NULL);
351 345 mutex_init(&krdc->bmapmutex, NULL, MUTEX_DRIVER, NULL);
352 346 mutex_init(&krdc->kstat_mutex, NULL, MUTEX_DRIVER, NULL);
353 347 mutex_init(&krdc->bmp_kstat_mutex, NULL, MUTEX_DRIVER, NULL);
354 348 mutex_init(&krdc->syncbitmutex, NULL, MUTEX_DRIVER, NULL);
355 349 cv_init(&krdc->busycv, NULL, CV_DRIVER, NULL);
356 350 cv_init(&krdc->closingcv, NULL, CV_DRIVER, NULL);
357 351 cv_init(&krdc->haltcv, NULL, CV_DRIVER, NULL);
358 352 cv_init(&krdc->synccv, NULL, CV_DRIVER, NULL);
359 353 }
360 354
361 355 rdc_volume_update = nsc_register_svc("RDCVolumeUpdated",
362 356 rdc_volume_update_svc);
363 357
364 358 return (0);
365 359 }
366 360
367 361 static void
368 362 rdc_u_init(rdc_u_info_t *urdc)
369 363 {
370 364 const int index = (int)(urdc - &rdc_u_info[0]);
371 365
372 366 if (urdc->secondary.addr.maxlen)
373 367 free_rdc_netbuf(&urdc->secondary.addr);
374 368 if (urdc->primary.addr.maxlen)
375 369 free_rdc_netbuf(&urdc->primary.addr);
376 370
377 371 bzero(urdc, sizeof (rdc_u_info_t));
378 372
379 373 urdc->index = index;
380 374 urdc->maxqfbas = rdc_maxthres_queue;
381 375 urdc->maxqitems = rdc_max_qitems;
382 376 urdc->asyncthr = rdc_asyncthr;
383 377 }
384 378
385 379 /*
386 380 * _rdc_configure() - cache is being configured.
387 381 *
388 382 * Initialize dual copy structures
389 383 */
390 384 int
391 385 _rdc_configure(void)
392 386 {
393 387 int index;
394 388 rdc_k_info_t *krdc;
395 389
396 390 for (index = 0; index < rdc_max_sets; index++) {
397 391 krdc = &rdc_k_info[index];
398 392
399 393 krdc->remote_index = -1;
400 394 krdc->dcio_bitmap = NULL;
401 395 krdc->bitmap_ref = NULL;
402 396 krdc->bitmap_size = 0;
403 397 krdc->bitmap_write = 0;
404 398 krdc->disk_status = 0;
405 399 krdc->many_next = krdc;
406 400
407 401 rdc_u_init(&rdc_u_info[index]);
408 402 }
409 403
410 404 rdc_async_timeout = 120 * HZ; /* Seconds * HZ */
411 405 MAX_RDC_FBAS = FBA_LEN(RDC_MAXDATA);
412 406 if (net_exit != ATM_INIT) {
413 407 net_exit = ATM_INIT;
414 408 return (0);
415 409 }
416 410 return (0);
417 411 }
418 412
419 413 /*
420 414 * _rdc_deconfigure - rdc is being deconfigured, shut down any
421 415 * dual copy operations and return to an unconfigured state.
422 416 */
423 417 void
424 418 _rdc_deconfigure(void)
425 419 {
426 420 rdc_k_info_t *krdc;
427 421 rdc_u_info_t *urdc;
428 422 int index;
429 423
430 424 for (index = 0; index < rdc_max_sets; index++) {
431 425 krdc = &rdc_k_info[index];
432 426 urdc = &rdc_u_info[index];
433 427
434 428 krdc->remote_index = -1;
435 429 krdc->dcio_bitmap = NULL;
436 430 krdc->bitmap_ref = NULL;
437 431 krdc->bitmap_size = 0;
438 432 krdc->bitmap_write = 0;
439 433 krdc->disk_status = 0;
440 434 krdc->many_next = krdc;
441 435
442 436 if (urdc->primary.addr.maxlen)
443 437 free_rdc_netbuf(&(urdc->primary.addr));
444 438
445 439 if (urdc->secondary.addr.maxlen)
446 440 free_rdc_netbuf(&(urdc->secondary.addr));
447 441
448 442 bzero(urdc, sizeof (rdc_u_info_t));
449 443 urdc->index = index;
450 444 }
451 445 net_exit = ATM_EXIT;
452 446 rdc_clnt_destroy();
453 447
454 448 }
455 449
456 450
457 451 /*
458 452 * Lock primitives, containing checks that lock ordering isn't broken
459 453 */
460 454 /*ARGSUSED*/
461 455 void
462 456 rdc_many_enter(rdc_k_info_t *krdc)
463 457 {
464 458 ASSERT(!MUTEX_HELD(&krdc->bmapmutex));
465 459
466 460 mutex_enter(&rdc_many_lock);
467 461 }
468 462
469 463 /* ARGSUSED */
470 464 void
471 465 rdc_many_exit(rdc_k_info_t *krdc)
472 466 {
473 467 mutex_exit(&rdc_many_lock);
474 468 }
475 469
476 470 void
477 471 rdc_group_enter(rdc_k_info_t *krdc)
478 472 {
479 473 ASSERT(!MUTEX_HELD(&rdc_many_lock));
480 474 ASSERT(!MUTEX_HELD(&rdc_conf_lock));
481 475 ASSERT(!MUTEX_HELD(&krdc->bmapmutex));
482 476
483 477 mutex_enter(&krdc->group->lock);
484 478 }
485 479
486 480 void
487 481 rdc_group_exit(rdc_k_info_t *krdc)
488 482 {
489 483 mutex_exit(&krdc->group->lock);
490 484 }
491 485
492 486 /*
493 487 * Suspend and disable operations use this function to wait until it is safe
494 488 * to do continue, without trashing data structures used by other ioctls.
495 489 */
496 490 static void
497 491 wait_busy(rdc_k_info_t *krdc)
498 492 {
499 493 ASSERT(MUTEX_HELD(&rdc_conf_lock));
500 494
501 495 while (krdc->busy_count > 0)
502 496 cv_wait(&krdc->busycv, &rdc_conf_lock);
503 497 }
504 498
505 499
506 500 /*
507 501 * Other ioctls use this function to hold off disable and suspend.
508 502 */
509 503 void
510 504 set_busy(rdc_k_info_t *krdc)
511 505 {
512 506 ASSERT(MUTEX_HELD(&rdc_conf_lock));
513 507
514 508 wait_busy(krdc);
515 509
516 510 krdc->busy_count++;
517 511 }
518 512
519 513
520 514 /*
521 515 * Other ioctls use this function to allow disable and suspend to continue.
522 516 */
523 517 void
524 518 wakeup_busy(rdc_k_info_t *krdc)
525 519 {
526 520 ASSERT(MUTEX_HELD(&rdc_conf_lock));
527 521
528 522 if (krdc->busy_count <= 0)
529 523 return;
530 524
531 525 krdc->busy_count--;
532 526 cv_broadcast(&krdc->busycv);
533 527 }
534 528
535 529
536 530 /*
537 531 * Remove the rdc set from its group, and destroy the group if no longer in
538 532 * use.
539 533 */
540 534 static void
541 535 remove_from_group(rdc_k_info_t *krdc)
542 536 {
543 537 rdc_k_info_t *p;
544 538 rdc_group_t *group;
545 539
546 540 ASSERT(MUTEX_HELD(&rdc_conf_lock));
547 541
548 542 rdc_many_enter(krdc);
549 543 group = krdc->group;
550 544
551 545 group->count--;
552 546
553 547 /*
554 548 * lock queue while looking at thrnum
555 549 */
556 550 mutex_enter(&group->ra_queue.net_qlock);
557 551 if ((group->rdc_thrnum == 0) && (group->count == 0)) {
558 552
559 553 /*
560 554 * Assure the we've stopped and the flusher thread has not
561 555 * fallen back to sleep
562 556 */
563 557 if (krdc->group->ra_queue.qfill_sleeping != RDC_QFILL_DEAD) {
564 558 group->ra_queue.qfflags |= RDC_QFILLSTOP;
565 559 while (krdc->group->ra_queue.qfflags & RDC_QFILLSTOP) {
566 560 if (krdc->group->ra_queue.qfill_sleeping ==
567 561 RDC_QFILL_ASLEEP)
568 562 cv_broadcast(&group->ra_queue.qfcv);
569 563 mutex_exit(&group->ra_queue.net_qlock);
570 564 delay(2);
571 565 mutex_enter(&group->ra_queue.net_qlock);
572 566 }
573 567 }
574 568 mutex_exit(&group->ra_queue.net_qlock);
575 569
576 570 mutex_enter(&group->diskqmutex);
577 571 rdc_close_diskq(group);
578 572 mutex_exit(&group->diskqmutex);
579 573 rdc_delgroup(group);
580 574 rdc_many_exit(krdc);
581 575 krdc->group = NULL;
582 576 return;
583 577 }
584 578 mutex_exit(&group->ra_queue.net_qlock);
585 579 /*
586 580 * Always clear the group field.
587 581 * no, you need it set in rdc_flush_memq().
588 582 * to call rdc_group_log()
589 583 * krdc->group = NULL;
590 584 */
591 585
592 586 /* Take this rdc structure off the group list */
593 587
594 588 for (p = krdc->group_next; p->group_next != krdc; p = p->group_next)
595 589 ;
596 590 p->group_next = krdc->group_next;
597 591
598 592 rdc_many_exit(krdc);
599 593 }
600 594
601 595
602 596 /*
603 597 * Add the rdc set to its group, setting up a new group if it's the first one.
604 598 */
605 599 static int
606 600 add_to_group(rdc_k_info_t *krdc, int options, int cmd)
607 601 {
608 602 rdc_u_info_t *urdc = &rdc_u_info[krdc->index];
609 603 rdc_u_info_t *utmp;
610 604 rdc_k_info_t *ktmp;
611 605 int index;
612 606 rdc_group_t *group;
613 607 int rc = 0;
614 608 nsthread_t *trc;
615 609
616 610 ASSERT(MUTEX_HELD(&rdc_conf_lock));
617 611
618 612 /*
619 613 * Look for matching group name, primary host name and secondary
620 614 * host name.
621 615 */
622 616
623 617 rdc_many_enter(krdc);
624 618 for (index = 0; index < rdc_max_sets; index++) {
625 619 utmp = &rdc_u_info[index];
626 620 ktmp = &rdc_k_info[index];
627 621
628 622 if (urdc->group_name[0] == 0)
629 623 break;
630 624
631 625 if (!IS_CONFIGURED(ktmp))
632 626 continue;
633 627
634 628 if (strncmp(utmp->group_name, urdc->group_name,
635 629 NSC_MAXPATH) != 0)
636 630 continue;
637 631 if (strncmp(utmp->primary.intf, urdc->primary.intf,
638 632 MAX_RDC_HOST_SIZE) != 0) {
639 633 /* Same group name, different primary interface */
640 634 rdc_many_exit(krdc);
641 635 return (-1);
642 636 }
643 637 if (strncmp(utmp->secondary.intf, urdc->secondary.intf,
644 638 MAX_RDC_HOST_SIZE) != 0) {
645 639 /* Same group name, different secondary interface */
646 640 rdc_many_exit(krdc);
647 641 return (-1);
648 642 }
649 643
650 644 /* Group already exists, so add this set to the group */
651 645
652 646 if (((options & RDC_OPT_ASYNC) == 0) &&
653 647 ((ktmp->type_flag & RDC_ASYNCMODE) != 0)) {
654 648 /* Must be same mode as existing group members */
655 649 rdc_many_exit(krdc);
656 650 return (-1);
657 651 }
658 652 if (((options & RDC_OPT_ASYNC) != 0) &&
659 653 ((ktmp->type_flag & RDC_ASYNCMODE) == 0)) {
660 654 /* Must be same mode as existing group members */
661 655 rdc_many_exit(krdc);
662 656 return (-1);
663 657 }
664 658
665 659 /* cannont reconfigure existing group into new queue this way */
666 660 if ((cmd != RDC_CMD_RESUME) &&
667 661 !RDC_IS_DISKQ(ktmp->group) && urdc->disk_queue[0] != '\0') {
668 662 rdc_many_exit(krdc);
669 663 return (RDC_EQNOADD);
670 664 }
671 665
672 666 ktmp->group->count++;
673 667 krdc->group = ktmp->group;
674 668 krdc->group_next = ktmp->group_next;
675 669 ktmp->group_next = krdc;
676 670
677 671 urdc->autosync = utmp->autosync; /* Same as rest */
678 672
679 673 (void) strncpy(urdc->disk_queue, utmp->disk_queue, NSC_MAXPATH);
680 674
681 675 rdc_many_exit(krdc);
682 676 return (0);
683 677 }
684 678
685 679 /* This must be a new group */
686 680 group = rdc_newgroup();
687 681 krdc->group = group;
688 682 krdc->group_next = krdc;
689 683 urdc->autosync = -1; /* Unknown */
690 684
691 685 /*
692 686 * Tune the thread set by one for each thread created
693 687 */
694 688 rdc_thread_tune(1);
695 689
696 690 trc = nst_create(_rdc_ioset, rdc_qfiller_thr, (void *)krdc, NST_SLEEP);
697 691 if (trc == NULL) {
698 692 rc = -1;
699 693 cmn_err(CE_NOTE, "!unable to create queue filler daemon");
700 694 goto fail;
701 695 }
702 696
703 697 if (urdc->disk_queue[0] == '\0') {
704 698 krdc->group->flags |= RDC_MEMQUE;
705 699 } else {
706 700 krdc->group->flags |= RDC_DISKQUE;
707 701
708 702 /* XXX check here for resume or enable and act accordingly */
709 703
710 704 if (cmd == RDC_CMD_RESUME) {
711 705 rc = rdc_resume_diskq(krdc);
712 706
713 707 } else if (cmd == RDC_CMD_ENABLE) {
714 708 rc = rdc_enable_diskq(krdc);
715 709 if ((rc == RDC_EQNOADD) && (cmd != RDC_CMD_ENABLE)) {
716 710 cmn_err(CE_WARN, "!disk queue %s enable failed,"
717 711 " enabling memory queue",
718 712 urdc->disk_queue);
719 713 krdc->group->flags &= ~RDC_DISKQUE;
720 714 krdc->group->flags |= RDC_MEMQUE;
721 715 bzero(urdc->disk_queue, NSC_MAXPATH);
722 716 }
723 717 }
724 718 }
725 719 fail:
726 720 rdc_many_exit(krdc);
727 721 return (rc);
728 722 }
729 723
730 724
731 725 /*
732 726 * Move the set to a new group if possible
733 727 */
734 728 static int
735 729 change_group(rdc_k_info_t *krdc, int options)
736 730 {
737 731 rdc_u_info_t *urdc = &rdc_u_info[krdc->index];
738 732 rdc_u_info_t *utmp;
739 733 rdc_k_info_t *ktmp;
740 734 rdc_k_info_t *next;
741 735 char tmpq[NSC_MAXPATH];
742 736 int index;
743 737 int rc = -1;
744 738 rdc_group_t *group, *old_group;
745 739 nsthread_t *trc;
746 740
747 741 ASSERT(MUTEX_HELD(&rdc_conf_lock));
748 742
749 743 /*
750 744 * Look for matching group name, primary host name and secondary
751 745 * host name.
752 746 */
753 747
754 748 bzero(&tmpq, sizeof (tmpq));
755 749 rdc_many_enter(krdc);
756 750
757 751 old_group = krdc->group;
758 752 next = krdc->group_next;
759 753
760 754 if (RDC_IS_DISKQ(old_group)) { /* can't keep your own queue */
761 755 (void) strncpy(tmpq, urdc->disk_queue, NSC_MAXPATH);
762 756 bzero(urdc->disk_queue, sizeof (urdc->disk_queue));
763 757 }
764 758 for (index = 0; index < rdc_max_sets; index++) {
765 759 utmp = &rdc_u_info[index];
766 760 ktmp = &rdc_k_info[index];
767 761
768 762 if (ktmp == krdc)
769 763 continue;
770 764
771 765 if (urdc->group_name[0] == 0)
772 766 break;
773 767
774 768 if (!IS_CONFIGURED(ktmp))
775 769 continue;
776 770
777 771 if (strncmp(utmp->group_name, urdc->group_name,
778 772 NSC_MAXPATH) != 0)
779 773 continue;
780 774 if (strncmp(utmp->primary.intf, urdc->primary.intf,
781 775 MAX_RDC_HOST_SIZE) != 0)
782 776 goto bad;
783 777 if (strncmp(utmp->secondary.intf, urdc->secondary.intf,
784 778 MAX_RDC_HOST_SIZE) != 0)
785 779 goto bad;
786 780
787 781 /* Group already exists, so add this set to the group */
788 782
789 783 if (((options & RDC_OPT_ASYNC) == 0) &&
790 784 ((ktmp->type_flag & RDC_ASYNCMODE) != 0)) {
791 785 /* Must be same mode as existing group members */
792 786 goto bad;
793 787 }
794 788 if (((options & RDC_OPT_ASYNC) != 0) &&
795 789 ((ktmp->type_flag & RDC_ASYNCMODE) == 0)) {
796 790 /* Must be same mode as existing group members */
797 791 goto bad;
798 792 }
799 793
800 794 ktmp->group->count++;
801 795 krdc->group = ktmp->group;
802 796 krdc->group_next = ktmp->group_next;
803 797 ktmp->group_next = krdc;
804 798 bzero(urdc->disk_queue, sizeof (urdc->disk_queue));
805 799 (void) strncpy(urdc->disk_queue, utmp->disk_queue, NSC_MAXPATH);
806 800
807 801 goto good;
808 802 }
809 803
810 804 /* This must be a new group */
811 805 group = rdc_newgroup();
812 806 krdc->group = group;
813 807 krdc->group_next = krdc;
814 808
815 809 trc = nst_create(_rdc_ioset, rdc_qfiller_thr, (void *)krdc, NST_SLEEP);
816 810 if (trc == NULL) {
817 811 rc = -1;
818 812 cmn_err(CE_NOTE, "!unable to create queue filler daemon");
819 813 goto bad;
820 814 }
821 815
822 816 if (urdc->disk_queue[0] == 0) {
823 817 krdc->group->flags |= RDC_MEMQUE;
824 818 } else {
825 819 krdc->group->flags |= RDC_DISKQUE;
826 820 if ((rc = rdc_enable_diskq(krdc)) < 0)
827 821 goto bad;
828 822 }
829 823 good:
830 824 if (options & RDC_OPT_ASYNC) {
831 825 krdc->type_flag |= RDC_ASYNCMODE;
832 826 rdc_set_flags(urdc, RDC_ASYNC);
833 827 } else {
834 828 krdc->type_flag &= ~RDC_ASYNCMODE;
835 829 rdc_clr_flags(urdc, RDC_ASYNC);
836 830 }
837 831
838 832 old_group->count--;
839 833 if (!old_group->rdc_writer && old_group->count == 0) {
840 834 /* Group now empty, so destroy */
841 835 if (RDC_IS_DISKQ(old_group)) {
842 836 rdc_unintercept_diskq(old_group);
843 837 mutex_enter(&old_group->diskqmutex);
844 838 rdc_close_diskq(old_group);
845 839 mutex_exit(&old_group->diskqmutex);
846 840 }
847 841
848 842 mutex_enter(&old_group->ra_queue.net_qlock);
849 843
850 844 /*
851 845 * Assure the we've stopped and the flusher thread has not
852 846 * fallen back to sleep
853 847 */
854 848 if (old_group->ra_queue.qfill_sleeping != RDC_QFILL_DEAD) {
855 849 old_group->ra_queue.qfflags |= RDC_QFILLSTOP;
856 850 while (old_group->ra_queue.qfflags & RDC_QFILLSTOP) {
857 851 if (old_group->ra_queue.qfill_sleeping ==
858 852 RDC_QFILL_ASLEEP)
859 853 cv_broadcast(&old_group->ra_queue.qfcv);
860 854 mutex_exit(&old_group->ra_queue.net_qlock);
861 855 delay(2);
862 856 mutex_enter(&old_group->ra_queue.net_qlock);
863 857 }
864 858 }
865 859 mutex_exit(&old_group->ra_queue.net_qlock);
866 860
867 861 rdc_delgroup(old_group);
868 862 rdc_many_exit(krdc);
869 863 return (0);
870 864 }
871 865
872 866 /* Take this rdc structure off the old group list */
873 867
874 868 for (ktmp = next; ktmp->group_next != krdc; ktmp = ktmp->group_next)
875 869 ;
876 870 ktmp->group_next = next;
877 871
878 872 rdc_many_exit(krdc);
879 873 return (0);
880 874
881 875 bad:
882 876 /* Leave existing group status alone */
883 877 (void) strncpy(urdc->disk_queue, tmpq, NSC_MAXPATH);
884 878 rdc_many_exit(krdc);
885 879 return (rc);
886 880 }
887 881
888 882
889 883 /*
890 884 * Set flags for an rdc set, setting the group flags as necessary.
891 885 */
892 886 void
893 887 rdc_set_flags(rdc_u_info_t *urdc, int flags)
894 888 {
895 889 rdc_k_info_t *krdc = &rdc_k_info[urdc->index];
896 890 int vflags, sflags, bflags, ssflags;
897 891
898 892 DTRACE_PROBE2(rdc_set_flags, int, krdc->index, int, flags);
899 893 vflags = flags & RDC_VFLAGS;
900 894 sflags = flags & RDC_SFLAGS;
901 895 bflags = flags & RDC_BFLAGS;
902 896 ssflags = flags & RDC_SYNC_STATE_FLAGS;
903 897
904 898 if (vflags) {
905 899 /* normal volume flags */
906 900 ASSERT(MUTEX_HELD(&rdc_conf_lock) ||
907 901 MUTEX_HELD(&krdc->group->lock));
908 902 if (ssflags)
909 903 mutex_enter(&krdc->bmapmutex);
910 904
911 905 urdc->flags |= vflags;
912 906
913 907 if (ssflags)
914 908 mutex_exit(&krdc->bmapmutex);
915 909 }
916 910
917 911 if (sflags) {
918 912 /* Sync state flags that are protected by a different lock */
919 913 ASSERT(MUTEX_HELD(&rdc_many_lock));
920 914 urdc->sync_flags |= sflags;
921 915 }
922 916
923 917 if (bflags) {
924 918 /* Bmap state flags that are protected by a different lock */
925 919 ASSERT(MUTEX_HELD(&krdc->bmapmutex));
926 920 urdc->bmap_flags |= bflags;
927 921 }
928 922
929 923 }
930 924
931 925
932 926 /*
933 927 * Clear flags for an rdc set, clearing the group flags as necessary.
934 928 */
935 929 void
936 930 rdc_clr_flags(rdc_u_info_t *urdc, int flags)
937 931 {
938 932 rdc_k_info_t *krdc = &rdc_k_info[urdc->index];
939 933 int vflags, sflags, bflags;
940 934
941 935 DTRACE_PROBE2(rdc_clr_flags, int, krdc->index, int, flags);
942 936 vflags = flags & RDC_VFLAGS;
943 937 sflags = flags & RDC_SFLAGS;
944 938 bflags = flags & RDC_BFLAGS;
945 939
946 940 if (vflags) {
947 941 /* normal volume flags */
948 942 ASSERT(MUTEX_HELD(&rdc_conf_lock) ||
949 943 MUTEX_HELD(&krdc->group->lock));
950 944 urdc->flags &= ~vflags;
951 945
952 946 }
953 947
954 948 if (sflags) {
955 949 /* Sync state flags that are protected by a different lock */
956 950 ASSERT(MUTEX_HELD(&rdc_many_lock));
957 951 urdc->sync_flags &= ~sflags;
958 952 }
959 953
960 954 if (bflags) {
961 955 /* Bmap state flags that are protected by a different lock */
962 956 ASSERT(MUTEX_HELD(&krdc->bmapmutex));
963 957 urdc->bmap_flags &= ~bflags;
964 958 }
965 959 }
966 960
967 961
968 962 /*
969 963 * Get the flags for an rdc set.
970 964 */
971 965 int
972 966 rdc_get_vflags(rdc_u_info_t *urdc)
973 967 {
974 968 return (urdc->flags | urdc->sync_flags | urdc->bmap_flags);
975 969 }
976 970
977 971
978 972 /*
979 973 * Initialise flags for an rdc set.
980 974 */
981 975 static void
982 976 rdc_init_flags(rdc_u_info_t *urdc)
983 977 {
984 978 urdc->flags = 0;
985 979 urdc->mflags = 0;
986 980 urdc->sync_flags = 0;
987 981 urdc->bmap_flags = 0;
988 982 }
989 983
990 984
991 985 /*
992 986 * Set flags for a many group.
993 987 */
994 988 void
995 989 rdc_set_mflags(rdc_u_info_t *urdc, int flags)
996 990 {
997 991 rdc_k_info_t *krdc = &rdc_k_info[urdc->index];
998 992 rdc_k_info_t *this = krdc;
999 993
1000 994 ASSERT(!(flags & ~RDC_MFLAGS));
1001 995
1002 996 if (flags == 0)
1003 997 return;
1004 998
1005 999 ASSERT(MUTEX_HELD(&rdc_many_lock));
1006 1000
1007 1001 rdc_set_flags(urdc, flags); /* set flags on local urdc */
1008 1002
1009 1003 urdc->mflags |= flags;
1010 1004 for (krdc = krdc->many_next; krdc != this; krdc = krdc->many_next) {
1011 1005 urdc = &rdc_u_info[krdc->index];
1012 1006 if (!IS_ENABLED(urdc))
1013 1007 continue;
1014 1008 urdc->mflags |= flags;
1015 1009 }
1016 1010 }
1017 1011
1018 1012
1019 1013 /*
1020 1014 * Clear flags for a many group.
1021 1015 */
1022 1016 void
1023 1017 rdc_clr_mflags(rdc_u_info_t *urdc, int flags)
1024 1018 {
1025 1019 rdc_k_info_t *krdc = &rdc_k_info[urdc->index];
1026 1020 rdc_k_info_t *this = krdc;
1027 1021 rdc_u_info_t *utmp;
1028 1022
1029 1023 ASSERT(!(flags & ~RDC_MFLAGS));
1030 1024
1031 1025 if (flags == 0)
1032 1026 return;
1033 1027
1034 1028 ASSERT(MUTEX_HELD(&rdc_many_lock));
1035 1029
1036 1030 rdc_clr_flags(urdc, flags); /* clear flags on local urdc */
1037 1031
1038 1032 /*
1039 1033 * We must maintain the mflags based on the set of flags for
1040 1034 * all the urdc's that are chained up.
1041 1035 */
1042 1036
1043 1037 /*
1044 1038 * First look through all the urdc's and remove bits from
1045 1039 * the 'flags' variable that are in use elsewhere.
1046 1040 */
1047 1041
1048 1042 for (krdc = krdc->many_next; krdc != this; krdc = krdc->many_next) {
1049 1043 utmp = &rdc_u_info[krdc->index];
1050 1044 if (!IS_ENABLED(utmp))
1051 1045 continue;
1052 1046 flags &= ~(rdc_get_vflags(utmp) & RDC_MFLAGS);
1053 1047 if (flags == 0)
1054 1048 break;
1055 1049 }
1056 1050
1057 1051 /*
1058 1052 * Now clear flags as necessary.
1059 1053 */
1060 1054
1061 1055 if (flags != 0) {
1062 1056 urdc->mflags &= ~flags;
1063 1057 for (krdc = krdc->many_next; krdc != this;
1064 1058 krdc = krdc->many_next) {
1065 1059 utmp = &rdc_u_info[krdc->index];
1066 1060 if (!IS_ENABLED(utmp))
1067 1061 continue;
1068 1062 utmp->mflags &= ~flags;
1069 1063 }
1070 1064 }
1071 1065 }
1072 1066
1073 1067
1074 1068 int
1075 1069 rdc_get_mflags(rdc_u_info_t *urdc)
1076 1070 {
1077 1071 return (urdc->mflags);
1078 1072 }
1079 1073
1080 1074
1081 1075 void
1082 1076 rdc_set_flags_log(rdc_u_info_t *urdc, int flags, char *why)
1083 1077 {
1084 1078 DTRACE_PROBE2(rdc_set_flags_log, int, urdc->index, int, flags);
1085 1079
1086 1080 rdc_set_flags(urdc, flags);
1087 1081
1088 1082 if (why == NULL)
1089 1083 return;
1090 1084
1091 1085 if (flags & RDC_LOGGING)
1092 1086 cmn_err(CE_NOTE, "!sndr: %s:%s entered logging mode: %s",
1093 1087 urdc->secondary.intf, urdc->secondary.file, why);
1094 1088 if (flags & RDC_VOL_FAILED)
1095 1089 cmn_err(CE_NOTE, "!sndr: %s:%s volume failed: %s",
1096 1090 urdc->secondary.intf, urdc->secondary.file, why);
1097 1091 if (flags & RDC_BMP_FAILED)
1098 1092 cmn_err(CE_NOTE, "!sndr: %s:%s bitmap failed: %s",
1099 1093 urdc->secondary.intf, urdc->secondary.file, why);
1100 1094 }
1101 1095 /*
1102 1096 * rdc_lor(source, dest, len)
1103 1097 * logically OR memory pointed to by source and dest, copying result into dest.
1104 1098 */
1105 1099 void
1106 1100 rdc_lor(const uchar_t *source, uchar_t *dest, int len)
1107 1101 {
1108 1102 int i;
1109 1103
1110 1104 if (source == NULL)
1111 1105 return;
1112 1106
1113 1107 for (i = 0; i < len; i++)
1114 1108 *dest++ |= *source++;
1115 1109 }
1116 1110
1117 1111
1118 1112 static int
1119 1113 check_filesize(int index, spcs_s_info_t kstatus)
1120 1114 {
1121 1115 uint64_t remote_size;
1122 1116 char tmp1[16], tmp2[16];
1123 1117 rdc_u_info_t *urdc = &rdc_u_info[index];
1124 1118 int status;
1125 1119
1126 1120 status = rdc_net_getsize(index, &remote_size);
1127 1121 if (status) {
1128 1122 (void) spcs_s_inttostring(status, tmp1, sizeof (tmp1), 0);
1129 1123 spcs_s_add(kstatus, RDC_EGETSIZE, urdc->secondary.intf,
1130 1124 urdc->secondary.file, tmp1);
1131 1125 (void) rdc_net_state(index, CCIO_ENABLELOG);
1132 1126 return (RDC_EGETSIZE);
1133 1127 }
1134 1128 if (remote_size < (unsigned long long)urdc->volume_size) {
1135 1129 (void) spcs_s_inttostring(
1136 1130 urdc->volume_size, tmp1, sizeof (tmp1), 0);
1137 1131 /*
1138 1132 * Cheat, and covert to int, until we have
1139 1133 * spcs_s_unsignedlonginttostring().
1140 1134 */
1141 1135 status = (int)remote_size;
1142 1136 (void) spcs_s_inttostring(status, tmp2, sizeof (tmp2), 0);
1143 1137 spcs_s_add(kstatus, RDC_ESIZE, urdc->primary.intf,
1144 1138 urdc->primary.file, tmp1, urdc->secondary.intf,
1145 1139 urdc->secondary.file, tmp2);
1146 1140 (void) rdc_net_state(index, CCIO_ENABLELOG);
1147 1141 return (RDC_ESIZE);
1148 1142 }
1149 1143 return (0);
1150 1144 }
1151 1145
1152 1146
1153 1147 static void
1154 1148 rdc_volume_update_svc(intptr_t arg)
1155 1149 {
1156 1150 rdc_update_t *update = (rdc_update_t *)arg;
1157 1151 rdc_k_info_t *krdc;
1158 1152 rdc_k_info_t *this;
1159 1153 rdc_u_info_t *urdc;
1160 1154 struct net_bdata6 bd;
1161 1155 int index;
1162 1156 int rc;
1163 1157
1164 1158 #ifdef DEBUG_IIUPDATE
1165 1159 cmn_err(CE_NOTE, "!SNDR received update request for %s",
1166 1160 update->volume);
1167 1161 #endif
1168 1162
1169 1163 if ((update->protocol != RDC_SVC_ONRETURN) &&
1170 1164 (update->protocol != RDC_SVC_VOL_ENABLED)) {
1171 1165 /* don't understand what the client intends to do */
1172 1166 update->denied = 1;
1173 1167 spcs_s_add(update->status, RDC_EVERSION);
1174 1168 return;
1175 1169 }
1176 1170
1177 1171 index = rdc_lookup_enabled(update->volume, 0);
1178 1172 if (index < 0)
1179 1173 return;
1180 1174
1181 1175 /*
1182 1176 * warn II that this volume is in use by sndr so
1183 1177 * II can validate the sizes of the master vs shadow
1184 1178 * and avoid trouble later down the line with
1185 1179 * size mis-matches between urdc->volume_size and
1186 1180 * what is returned from nsc_partsize() which may
1187 1181 * be the size of the master when replicating the shadow
1188 1182 */
1189 1183 if (update->protocol == RDC_SVC_VOL_ENABLED) {
1190 1184 if (index >= 0)
1191 1185 update->denied = 1;
1192 1186 return;
1193 1187 }
1194 1188
1195 1189 krdc = &rdc_k_info[index];
1196 1190 urdc = &rdc_u_info[index];
1197 1191 this = krdc;
1198 1192
1199 1193 do {
1200 1194 if (!(rdc_get_vflags(urdc) & RDC_LOGGING)) {
1201 1195 #ifdef DEBUG_IIUPDATE
1202 1196 cmn_err(CE_NOTE, "!SNDR refused update request for %s",
1203 1197 update->volume);
1204 1198 #endif
1205 1199 update->denied = 1;
1206 1200 spcs_s_add(update->status, RDC_EMIRRORUP);
1207 1201 return;
1208 1202 }
1209 1203 /* 1->many - all must be logging */
1210 1204 if (IS_MANY(krdc) && IS_STATE(urdc, RDC_PRIMARY)) {
1211 1205 rdc_many_enter(krdc);
1212 1206 for (krdc = krdc->many_next; krdc != this;
1213 1207 krdc = krdc->many_next) {
1214 1208 urdc = &rdc_u_info[krdc->index];
1215 1209 if (!IS_ENABLED(urdc))
1216 1210 continue;
1217 1211 break;
1218 1212 }
1219 1213 rdc_many_exit(krdc);
1220 1214 }
1221 1215 } while (krdc != this);
1222 1216
1223 1217 #ifdef DEBUG_IIUPDATE
1224 1218 cmn_err(CE_NOTE, "!SNDR allowed update request for %s", update->volume);
1225 1219 #endif
1226 1220 urdc = &rdc_u_info[krdc->index];
1227 1221 do {
1228 1222
1229 1223 bd.size = min(krdc->bitmap_size, (nsc_size_t)update->size);
1230 1224 bd.data.data_val = (char *)update->bitmap;
1231 1225 bd.offset = 0;
1232 1226 bd.cd = index;
1233 1227
1234 1228 if ((rc = RDC_OR_BITMAP(&bd)) != 0) {
1235 1229 update->denied = 1;
1236 1230 spcs_s_add(update->status, rc);
1237 1231 return;
1238 1232 }
1239 1233 urdc = &rdc_u_info[index];
1240 1234 urdc->bits_set = RDC_COUNT_BITMAP(krdc);
1241 1235 if (IS_MANY(krdc) && IS_STATE(urdc, RDC_PRIMARY)) {
1242 1236 rdc_many_enter(krdc);
1243 1237 for (krdc = krdc->many_next; krdc != this;
1244 1238 krdc = krdc->many_next) {
1245 1239 index = krdc->index;
1246 1240 if (!IS_ENABLED(urdc))
1247 1241 continue;
1248 1242 break;
1249 1243 }
1250 1244 rdc_many_exit(krdc);
1251 1245 }
1252 1246 } while (krdc != this);
1253 1247
1254 1248
1255 1249 /* II (or something else) has updated us, so no need for a sync */
1256 1250 if (rdc_get_vflags(urdc) & (RDC_SYNC_NEEDED | RDC_RSYNC_NEEDED)) {
1257 1251 rdc_many_enter(krdc);
1258 1252 rdc_clr_flags(urdc, RDC_SYNC_NEEDED | RDC_RSYNC_NEEDED);
1259 1253 rdc_many_exit(krdc);
1260 1254 }
1261 1255
1262 1256 if (krdc->bitmap_write > 0)
1263 1257 (void) rdc_write_bitmap(krdc);
1264 1258 }
1265 1259
1266 1260
1267 1261 /*
1268 1262 * rdc_check()
1269 1263 *
1270 1264 * Return 0 if the set is configured, enabled and the supplied
1271 1265 * addressing information matches the in-kernel config, otherwise
1272 1266 * return 1.
1273 1267 */
1274 1268 static int
1275 1269 rdc_check(rdc_k_info_t *krdc, rdc_set_t *rdc_set)
1276 1270 {
1277 1271 rdc_u_info_t *urdc = &rdc_u_info[krdc->index];
1278 1272
1279 1273 ASSERT(MUTEX_HELD(&krdc->group->lock));
1280 1274
1281 1275 if (!IS_ENABLED(urdc))
1282 1276 return (1);
1283 1277
1284 1278 if (strncmp(urdc->primary.file, rdc_set->primary.file,
1285 1279 NSC_MAXPATH) != 0) {
1286 1280 #ifdef DEBUG
1287 1281 cmn_err(CE_WARN, "!rdc_check: primary file mismatch %s vs %s",
1288 1282 urdc->primary.file, rdc_set->primary.file);
1289 1283 #endif
1290 1284 return (1);
1291 1285 }
1292 1286
1293 1287 if (rdc_set->primary.addr.len != 0 &&
1294 1288 bcmp(urdc->primary.addr.buf, rdc_set->primary.addr.buf,
1295 1289 urdc->primary.addr.len) != 0) {
1296 1290 #ifdef DEBUG
1297 1291 cmn_err(CE_WARN, "!rdc_check: primary address mismatch for %s",
1298 1292 urdc->primary.file);
1299 1293 #endif
1300 1294 return (1);
1301 1295 }
1302 1296
1303 1297 if (strncmp(urdc->secondary.file, rdc_set->secondary.file,
1304 1298 NSC_MAXPATH) != 0) {
1305 1299 #ifdef DEBUG
1306 1300 cmn_err(CE_WARN, "!rdc_check: secondary file mismatch %s vs %s",
1307 1301 urdc->secondary.file, rdc_set->secondary.file);
1308 1302 #endif
1309 1303 return (1);
1310 1304 }
1311 1305
1312 1306 if (rdc_set->secondary.addr.len != 0 &&
1313 1307 bcmp(urdc->secondary.addr.buf, rdc_set->secondary.addr.buf,
1314 1308 urdc->secondary.addr.len) != 0) {
1315 1309 #ifdef DEBUG
1316 1310 cmn_err(CE_WARN, "!rdc_check: secondary addr mismatch for %s",
1317 1311 urdc->secondary.file);
1318 1312 #endif
1319 1313 return (1);
1320 1314 }
1321 1315
1322 1316 return (0);
1323 1317 }
1324 1318
1325 1319
1326 1320 /*
1327 1321 * Lookup enabled sets for a bitmap match
1328 1322 */
1329 1323
1330 1324 int
1331 1325 rdc_lookup_bitmap(char *pathname)
1332 1326 {
1333 1327 rdc_u_info_t *urdc;
1334 1328 #ifdef DEBUG
1335 1329 rdc_k_info_t *krdc;
1336 1330 #endif
1337 1331 int index;
1338 1332
1339 1333 for (index = 0; index < rdc_max_sets; index++) {
1340 1334 urdc = &rdc_u_info[index];
1341 1335 #ifdef DEBUG
1342 1336 krdc = &rdc_k_info[index];
1343 1337 #endif
1344 1338 ASSERT(krdc->index == index);
1345 1339 ASSERT(urdc->index == index);
1346 1340
1347 1341 if (!IS_ENABLED(urdc))
1348 1342 continue;
1349 1343
1350 1344 if (rdc_get_vflags(urdc) & RDC_PRIMARY) {
1351 1345 if (strncmp(pathname, urdc->primary.bitmap,
1352 1346 NSC_MAXPATH) == 0)
1353 1347 return (index);
1354 1348 } else {
1355 1349 if (strncmp(pathname, urdc->secondary.bitmap,
1356 1350 NSC_MAXPATH) == 0)
1357 1351 return (index);
1358 1352 }
1359 1353 }
1360 1354
1361 1355 return (-1);
1362 1356 }
1363 1357
1364 1358
1365 1359 /*
1366 1360 * Translate a pathname to index into rdc_k_info[].
1367 1361 * Returns first match that is enabled.
1368 1362 */
1369 1363
1370 1364 int
1371 1365 rdc_lookup_enabled(char *pathname, int allow_disabling)
1372 1366 {
1373 1367 rdc_u_info_t *urdc;
1374 1368 rdc_k_info_t *krdc;
1375 1369 int index;
1376 1370
1377 1371 restart:
1378 1372 for (index = 0; index < rdc_max_sets; index++) {
1379 1373 urdc = &rdc_u_info[index];
1380 1374 krdc = &rdc_k_info[index];
1381 1375
1382 1376 ASSERT(krdc->index == index);
1383 1377 ASSERT(urdc->index == index);
1384 1378
1385 1379 if (!IS_ENABLED(urdc))
1386 1380 continue;
1387 1381
1388 1382 if (allow_disabling == 0 && krdc->type_flag & RDC_UNREGISTER)
1389 1383 continue;
1390 1384
1391 1385 if (rdc_get_vflags(urdc) & RDC_PRIMARY) {
1392 1386 if (strncmp(pathname, urdc->primary.file,
1393 1387 NSC_MAXPATH) == 0)
1394 1388 return (index);
1395 1389 } else {
1396 1390 if (strncmp(pathname, urdc->secondary.file,
1397 1391 NSC_MAXPATH) == 0)
1398 1392 return (index);
1399 1393 }
1400 1394 }
1401 1395
1402 1396 if (allow_disabling == 0) {
1403 1397 /* None found, or only a disabling one found, so try again */
1404 1398 allow_disabling = 1;
1405 1399 goto restart;
1406 1400 }
1407 1401
1408 1402 return (-1);
1409 1403 }
1410 1404
1411 1405
1412 1406 /*
1413 1407 * Translate a pathname to index into rdc_k_info[].
1414 1408 * Returns first match that is configured.
1415 1409 *
1416 1410 * Used by enable & resume code.
1417 1411 * Must be called with rdc_conf_lock held.
1418 1412 */
1419 1413
1420 1414 int
1421 1415 rdc_lookup_configured(char *pathname)
1422 1416 {
1423 1417 rdc_u_info_t *urdc;
1424 1418 rdc_k_info_t *krdc;
1425 1419 int index;
1426 1420
1427 1421 ASSERT(MUTEX_HELD(&rdc_conf_lock));
1428 1422
1429 1423 for (index = 0; index < rdc_max_sets; index++) {
1430 1424 urdc = &rdc_u_info[index];
1431 1425 krdc = &rdc_k_info[index];
1432 1426
1433 1427 ASSERT(krdc->index == index);
1434 1428 ASSERT(urdc->index == index);
1435 1429
1436 1430 if (!IS_CONFIGURED(krdc))
1437 1431 continue;
1438 1432
1439 1433 if (rdc_get_vflags(urdc) & RDC_PRIMARY) {
1440 1434 if (strncmp(pathname, urdc->primary.file,
1441 1435 NSC_MAXPATH) == 0)
1442 1436 return (index);
1443 1437 } else {
1444 1438 if (strncmp(pathname, urdc->secondary.file,
1445 1439 NSC_MAXPATH) == 0)
1446 1440 return (index);
1447 1441 }
1448 1442 }
1449 1443
1450 1444 return (-1);
1451 1445 }
1452 1446
1453 1447
1454 1448 /*
1455 1449 * Looks up a configured set with matching secondary interface:volume
1456 1450 * to check for illegal many-to-one volume configs. To be used during
1457 1451 * enable and resume processing.
1458 1452 *
1459 1453 * Must be called with rdc_conf_lock held.
1460 1454 */
1461 1455
1462 1456 static int
1463 1457 rdc_lookup_many2one(rdc_set_t *rdc_set)
1464 1458 {
1465 1459 rdc_u_info_t *urdc;
1466 1460 rdc_k_info_t *krdc;
1467 1461 int index;
1468 1462
1469 1463 ASSERT(MUTEX_HELD(&rdc_conf_lock));
1470 1464
1471 1465 for (index = 0; index < rdc_max_sets; index++) {
1472 1466 urdc = &rdc_u_info[index];
1473 1467 krdc = &rdc_k_info[index];
1474 1468
1475 1469 if (!IS_CONFIGURED(krdc))
1476 1470 continue;
1477 1471
1478 1472 if (strncmp(urdc->secondary.file,
1479 1473 rdc_set->secondary.file, NSC_MAXPATH) != 0)
1480 1474 continue;
1481 1475 if (strncmp(urdc->secondary.intf,
1482 1476 rdc_set->secondary.intf, MAX_RDC_HOST_SIZE) != 0)
1483 1477 continue;
1484 1478
1485 1479 break;
1486 1480 }
1487 1481
1488 1482 if (index < rdc_max_sets)
1489 1483 return (index);
1490 1484 else
1491 1485 return (-1);
1492 1486 }
1493 1487
1494 1488
1495 1489 /*
1496 1490 * Looks up an rdc set to check if it is already configured, to be used from
1497 1491 * functions called from the config ioctl where the interface names can be
1498 1492 * used for comparison.
1499 1493 *
1500 1494 * Must be called with rdc_conf_lock held.
1501 1495 */
1502 1496
1503 1497 int
1504 1498 rdc_lookup_byname(rdc_set_t *rdc_set)
1505 1499 {
1506 1500 rdc_u_info_t *urdc;
1507 1501 rdc_k_info_t *krdc;
1508 1502 int index;
1509 1503
1510 1504 ASSERT(MUTEX_HELD(&rdc_conf_lock));
1511 1505
1512 1506 for (index = 0; index < rdc_max_sets; index++) {
1513 1507 urdc = &rdc_u_info[index];
1514 1508 krdc = &rdc_k_info[index];
1515 1509
1516 1510 ASSERT(krdc->index == index);
1517 1511 ASSERT(urdc->index == index);
1518 1512
1519 1513 if (!IS_CONFIGURED(krdc))
1520 1514 continue;
1521 1515
1522 1516 if (strncmp(urdc->primary.file, rdc_set->primary.file,
1523 1517 NSC_MAXPATH) != 0)
1524 1518 continue;
1525 1519 if (strncmp(urdc->primary.intf, rdc_set->primary.intf,
1526 1520 MAX_RDC_HOST_SIZE) != 0)
1527 1521 continue;
1528 1522 if (strncmp(urdc->secondary.file, rdc_set->secondary.file,
1529 1523 NSC_MAXPATH) != 0)
1530 1524 continue;
1531 1525 if (strncmp(urdc->secondary.intf, rdc_set->secondary.intf,
1532 1526 MAX_RDC_HOST_SIZE) != 0)
1533 1527 continue;
1534 1528
1535 1529 break;
1536 1530 }
1537 1531
1538 1532 if (index < rdc_max_sets)
1539 1533 return (index);
1540 1534 else
1541 1535 return (-1);
1542 1536 }
1543 1537
1544 1538 /*
1545 1539 * Looks up a secondary hostname and device, to be used from
1546 1540 * functions called from the config ioctl where the interface names can be
1547 1541 * used for comparison.
1548 1542 *
1549 1543 * Must be called with rdc_conf_lock held.
1550 1544 */
1551 1545
1552 1546 int
1553 1547 rdc_lookup_byhostdev(char *intf, char *file)
1554 1548 {
1555 1549 rdc_u_info_t *urdc;
1556 1550 rdc_k_info_t *krdc;
1557 1551 int index;
1558 1552
1559 1553 ASSERT(MUTEX_HELD(&rdc_conf_lock));
1560 1554
1561 1555 for (index = 0; index < rdc_max_sets; index++) {
1562 1556 urdc = &rdc_u_info[index];
1563 1557 krdc = &rdc_k_info[index];
1564 1558
1565 1559 ASSERT(krdc->index == index);
1566 1560 ASSERT(urdc->index == index);
1567 1561
1568 1562 if (!IS_CONFIGURED(krdc))
1569 1563 continue;
1570 1564
1571 1565 if (strncmp(urdc->secondary.file, file,
1572 1566 NSC_MAXPATH) != 0)
1573 1567 continue;
1574 1568 if (strncmp(urdc->secondary.intf, intf,
1575 1569 MAX_RDC_HOST_SIZE) != 0)
1576 1570 continue;
1577 1571 break;
1578 1572 }
1579 1573
1580 1574 if (index < rdc_max_sets)
1581 1575 return (index);
1582 1576 else
1583 1577 return (-1);
1584 1578 }
1585 1579
1586 1580
1587 1581 /*
1588 1582 * Looks up an rdc set to see if it is currently enabled, to be used on the
1589 1583 * server so that the interface addresses must be used for comparison, as
1590 1584 * the interface names may differ from those used on the client.
1591 1585 *
1592 1586 */
1593 1587
1594 1588 int
1595 1589 rdc_lookup_byaddr(rdc_set_t *rdc_set)
1596 1590 {
1597 1591 rdc_u_info_t *urdc;
1598 1592 #ifdef DEBUG
1599 1593 rdc_k_info_t *krdc;
1600 1594 #endif
1601 1595 int index;
1602 1596
1603 1597 for (index = 0; index < rdc_max_sets; index++) {
1604 1598 urdc = &rdc_u_info[index];
1605 1599 #ifdef DEBUG
1606 1600 krdc = &rdc_k_info[index];
1607 1601 #endif
1608 1602 ASSERT(krdc->index == index);
1609 1603 ASSERT(urdc->index == index);
1610 1604
1611 1605 if (!IS_ENABLED(urdc))
1612 1606 continue;
1613 1607
1614 1608 if (strcmp(urdc->primary.file, rdc_set->primary.file) != 0)
1615 1609 continue;
1616 1610
1617 1611 if (strcmp(urdc->secondary.file, rdc_set->secondary.file) != 0)
1618 1612 continue;
1619 1613
1620 1614 if (bcmp(urdc->primary.addr.buf, rdc_set->primary.addr.buf,
1621 1615 urdc->primary.addr.len) != 0) {
1622 1616 continue;
1623 1617 }
1624 1618
1625 1619 if (bcmp(urdc->secondary.addr.buf, rdc_set->secondary.addr.buf,
1626 1620 urdc->secondary.addr.len) != 0) {
1627 1621 continue;
1628 1622 }
1629 1623
1630 1624 break;
1631 1625 }
1632 1626
1633 1627 if (index < rdc_max_sets)
1634 1628 return (index);
1635 1629 else
1636 1630 return (-1);
1637 1631 }
1638 1632
1639 1633
1640 1634 /*
1641 1635 * Return index of first multihop or 1-to-many
1642 1636 * Behavior controlled by setting ismany.
1643 1637 * ismany TRUE (one-to-many)
1644 1638 * ismany FALSE (multihops)
1645 1639 *
1646 1640 */
1647 1641 static int
1648 1642 rdc_lookup_multimany(rdc_k_info_t *krdc, const int ismany)
1649 1643 {
1650 1644 rdc_u_info_t *urdc = &rdc_u_info[krdc->index];
1651 1645 rdc_u_info_t *utmp;
1652 1646 rdc_k_info_t *ktmp;
1653 1647 char *pathname;
1654 1648 int index;
1655 1649 int role;
1656 1650
1657 1651 ASSERT(MUTEX_HELD(&rdc_conf_lock));
1658 1652 ASSERT(MUTEX_HELD(&rdc_many_lock));
1659 1653
1660 1654 if (rdc_get_vflags(urdc) & RDC_PRIMARY) {
1661 1655 /* this host is the primary of the krdc set */
1662 1656 pathname = urdc->primary.file;
1663 1657 if (ismany) {
1664 1658 /*
1665 1659 * 1-many sets are linked by primary :
1666 1660 * look for matching primary on this host
1667 1661 */
1668 1662 role = RDC_PRIMARY;
1669 1663 } else {
1670 1664 /*
1671 1665 * multihop sets link primary to secondary :
1672 1666 * look for matching secondary on this host
1673 1667 */
1674 1668 role = 0;
1675 1669 }
1676 1670 } else {
1677 1671 /* this host is the secondary of the krdc set */
1678 1672 pathname = urdc->secondary.file;
1679 1673 if (ismany) {
1680 1674 /*
1681 1675 * 1-many sets are linked by primary, so if
1682 1676 * this host is the secondary of the set this
1683 1677 * cannot require 1-many linkage.
1684 1678 */
1685 1679 return (-1);
1686 1680 } else {
1687 1681 /*
1688 1682 * multihop sets link primary to secondary :
1689 1683 * look for matching primary on this host
1690 1684 */
1691 1685 role = RDC_PRIMARY;
1692 1686 }
1693 1687 }
1694 1688
1695 1689 for (index = 0; index < rdc_max_sets; index++) {
1696 1690 utmp = &rdc_u_info[index];
1697 1691 ktmp = &rdc_k_info[index];
1698 1692
1699 1693 if (!IS_CONFIGURED(ktmp)) {
1700 1694 continue;
1701 1695 }
1702 1696
1703 1697 if (role == RDC_PRIMARY) {
1704 1698 /*
1705 1699 * Find a primary that is this host and is not
1706 1700 * krdc but shares the same data volume as krdc.
1707 1701 */
1708 1702 if ((rdc_get_vflags(utmp) & RDC_PRIMARY) &&
1709 1703 strncmp(utmp->primary.file, pathname,
1710 1704 NSC_MAXPATH) == 0 && (krdc != ktmp)) {
1711 1705 break;
1712 1706 }
1713 1707 } else {
1714 1708 /*
1715 1709 * Find a secondary that is this host and is not
1716 1710 * krdc but shares the same data volume as krdc.
1717 1711 */
1718 1712 if (!(rdc_get_vflags(utmp) & RDC_PRIMARY) &&
1719 1713 strncmp(utmp->secondary.file, pathname,
1720 1714 NSC_MAXPATH) == 0 && (krdc != ktmp)) {
1721 1715 break;
1722 1716 }
1723 1717 }
1724 1718 }
1725 1719
1726 1720 if (index < rdc_max_sets)
1727 1721 return (index);
1728 1722 else
1729 1723 return (-1);
1730 1724 }
1731 1725
1732 1726 /*
1733 1727 * Returns secondary match that is configured.
1734 1728 *
1735 1729 * Used by enable & resume code.
1736 1730 * Must be called with rdc_conf_lock held.
1737 1731 */
1738 1732
1739 1733 static int
1740 1734 rdc_lookup_secondary(char *pathname)
1741 1735 {
1742 1736 rdc_u_info_t *urdc;
1743 1737 rdc_k_info_t *krdc;
1744 1738 int index;
1745 1739
1746 1740 ASSERT(MUTEX_HELD(&rdc_conf_lock));
1747 1741
1748 1742 for (index = 0; index < rdc_max_sets; index++) {
1749 1743 urdc = &rdc_u_info[index];
1750 1744 krdc = &rdc_k_info[index];
1751 1745
1752 1746 ASSERT(krdc->index == index);
1753 1747 ASSERT(urdc->index == index);
1754 1748
1755 1749 if (!IS_CONFIGURED(krdc))
1756 1750 continue;
1757 1751
1758 1752 if (!IS_STATE(urdc, RDC_PRIMARY)) {
1759 1753 if (strncmp(pathname, urdc->secondary.file,
1760 1754 NSC_MAXPATH) == 0)
1761 1755 return (index);
1762 1756 }
1763 1757 }
1764 1758
1765 1759 return (-1);
1766 1760 }
1767 1761
1768 1762
1769 1763 static nsc_fd_t *
1770 1764 rdc_open_direct(rdc_k_info_t *krdc)
1771 1765 {
1772 1766 rdc_u_info_t *urdc = &rdc_u_info[krdc->index];
1773 1767 int rc;
1774 1768
1775 1769 if (krdc->remote_fd == NULL)
1776 1770 krdc->remote_fd = nsc_open(urdc->direct_file,
1777 1771 NSC_RDCHR_ID|NSC_DEVICE|NSC_RDWR, 0, 0, &rc);
1778 1772 return (krdc->remote_fd);
1779 1773 }
1780 1774
1781 1775 static void
1782 1776 rdc_close_direct(rdc_k_info_t *krdc)
1783 1777 {
1784 1778 rdc_u_info_t *urdc = &rdc_u_info[krdc->index];
1785 1779
1786 1780 urdc->direct_file[0] = 0;
1787 1781 if (krdc->remote_fd) {
1788 1782 if (nsc_close(krdc->remote_fd) == 0) {
1789 1783 krdc->remote_fd = NULL;
1790 1784 }
1791 1785 }
1792 1786 }
1793 1787
1794 1788
1795 1789 #ifdef DEBUG_MANY
1796 1790 static void
1797 1791 print_many(rdc_k_info_t *start)
1798 1792 {
1799 1793 rdc_k_info_t *p = start;
1800 1794 rdc_u_info_t *q = &rdc_u_info[p->index];
1801 1795
1802 1796 do {
1803 1797 cmn_err(CE_CONT, "!krdc %p, %s %s (many_nxt %p multi_nxt %p)\n",
1804 1798 p, q->primary.file, q->secondary.file, p->many_next,
1805 1799 p->multi_next);
1806 1800 delay(10);
1807 1801 p = p->many_next;
1808 1802 q = &rdc_u_info[p->index];
1809 1803 } while (p && p != start);
1810 1804 }
1811 1805 #endif /* DEBUG_MANY */
1812 1806
1813 1807
1814 1808 static int
1815 1809 add_to_multi(rdc_k_info_t *krdc)
1816 1810 {
1817 1811 rdc_u_info_t *urdc;
1818 1812 rdc_k_info_t *ktmp;
1819 1813 rdc_u_info_t *utmp;
1820 1814 int mindex;
1821 1815 int domulti;
1822 1816
1823 1817 urdc = &rdc_u_info[krdc->index];
1824 1818
1825 1819 ASSERT(MUTEX_HELD(&rdc_conf_lock));
1826 1820 ASSERT(MUTEX_HELD(&rdc_many_lock));
1827 1821
1828 1822 /* Now find companion krdc */
1829 1823 mindex = rdc_lookup_multimany(krdc, FALSE);
1830 1824
1831 1825 #ifdef DEBUG_MANY
1832 1826 cmn_err(CE_NOTE,
1833 1827 "!add_to_multi: lookup_multimany: mindex %d prim %s sec %s",
1834 1828 mindex, urdc->primary.file, urdc->secondary.file);
1835 1829 #endif
1836 1830
1837 1831 if (mindex >= 0) {
1838 1832 ktmp = &rdc_k_info[mindex];
1839 1833 utmp = &rdc_u_info[mindex];
1840 1834
1841 1835 domulti = 1;
1842 1836
1843 1837 if ((rdc_get_vflags(urdc) & RDC_PRIMARY) &&
1844 1838 ktmp->multi_next != NULL) {
1845 1839 /*
1846 1840 * We are adding a new primary to a many
1847 1841 * group that is the target of a multihop, just
1848 1842 * ignore it since we are linked in elsewhere.
1849 1843 */
1850 1844 domulti = 0;
1851 1845 }
1852 1846
1853 1847 if (domulti) {
1854 1848 if (rdc_get_vflags(urdc) & RDC_PRIMARY) {
1855 1849 /* Is previous leg using direct file I/O? */
1856 1850 if (utmp->direct_file[0] != 0) {
1857 1851 /* It is, so cannot proceed */
1858 1852 return (-1);
1859 1853 }
1860 1854 } else {
1861 1855 /* Is this leg using direct file I/O? */
1862 1856 if (urdc->direct_file[0] != 0) {
1863 1857 /* It is, so cannot proceed */
1864 1858 return (-1);
1865 1859 }
1866 1860 }
1867 1861 krdc->multi_next = ktmp;
1868 1862 ktmp->multi_next = krdc;
1869 1863 }
1870 1864 } else {
1871 1865 krdc->multi_next = NULL;
1872 1866 #ifdef DEBUG_MANY
1873 1867 cmn_err(CE_NOTE, "!add_to_multi: NULL multi_next index %d",
1874 1868 krdc->index);
1875 1869 #endif
1876 1870 }
1877 1871
1878 1872 return (0);
1879 1873 }
1880 1874
1881 1875
1882 1876 /*
1883 1877 * Add a new set to the circular list of 1-to-many primaries and chain
1884 1878 * up any multihop as well.
1885 1879 */
1886 1880 static int
1887 1881 add_to_many(rdc_k_info_t *krdc)
1888 1882 {
1889 1883 rdc_k_info_t *okrdc;
1890 1884 int oindex;
1891 1885
1892 1886 ASSERT(MUTEX_HELD(&rdc_conf_lock));
1893 1887
1894 1888 rdc_many_enter(krdc);
1895 1889
1896 1890 if (add_to_multi(krdc) < 0) {
1897 1891 rdc_many_exit(krdc);
1898 1892 return (-1);
1899 1893 }
1900 1894
1901 1895 oindex = rdc_lookup_multimany(krdc, TRUE);
1902 1896 if (oindex < 0) {
1903 1897 #ifdef DEBUG_MANY
1904 1898 print_many(krdc);
1905 1899 #endif
1906 1900 rdc_many_exit(krdc);
1907 1901 return (0);
1908 1902 }
1909 1903
1910 1904 okrdc = &rdc_k_info[oindex];
1911 1905
1912 1906 #ifdef DEBUG_MANY
1913 1907 print_many(okrdc);
1914 1908 #endif
1915 1909 krdc->many_next = okrdc->many_next;
1916 1910 okrdc->many_next = krdc;
1917 1911
1918 1912 #ifdef DEBUG_MANY
1919 1913 print_many(okrdc);
1920 1914 #endif
1921 1915 rdc_many_exit(krdc);
1922 1916 return (0);
1923 1917 }
1924 1918
1925 1919
1926 1920 /*
1927 1921 * Remove a set from the circular list of 1-to-many primaries.
1928 1922 */
1929 1923 static void
1930 1924 remove_from_many(rdc_k_info_t *old)
1931 1925 {
1932 1926 rdc_u_info_t *uold = &rdc_u_info[old->index];
1933 1927 rdc_k_info_t *p, *q;
1934 1928
1935 1929 ASSERT(MUTEX_HELD(&rdc_conf_lock));
1936 1930
1937 1931 rdc_many_enter(old);
1938 1932
1939 1933 #ifdef DEBUG_MANY
1940 1934 cmn_err(CE_NOTE, "!rdc: before remove_from_many");
1941 1935 print_many(old);
1942 1936 #endif
1943 1937
1944 1938 if (old->many_next == old) {
1945 1939 /* remove from multihop */
1946 1940 if ((q = old->multi_next) != NULL) {
1947 1941 ASSERT(q->multi_next == old);
1948 1942 q->multi_next = NULL;
1949 1943 old->multi_next = NULL;
1950 1944 }
1951 1945
1952 1946 rdc_many_exit(old);
1953 1947 return;
1954 1948 }
1955 1949
1956 1950 /* search */
1957 1951 for (p = old->many_next; p->many_next != old; p = p->many_next)
1958 1952 ;
1959 1953
1960 1954 p->many_next = old->many_next;
1961 1955 old->many_next = old;
1962 1956
1963 1957 if ((q = old->multi_next) != NULL) {
1964 1958 /*
1965 1959 * old was part of a multihop, so switch multi pointers
1966 1960 * to someone remaining on the many chain
1967 1961 */
1968 1962 ASSERT(p->multi_next == NULL);
1969 1963
1970 1964 q->multi_next = p;
1971 1965 p->multi_next = q;
1972 1966 old->multi_next = NULL;
1973 1967 }
1974 1968
1975 1969 #ifdef DEBUG_MANY
1976 1970 if (p == old) {
1977 1971 cmn_err(CE_NOTE, "!rdc: after remove_from_many empty");
1978 1972 } else {
1979 1973 cmn_err(CE_NOTE, "!rdc: after remove_from_many");
1980 1974 print_many(p);
1981 1975 }
1982 1976 #endif
1983 1977
1984 1978 rdc_clr_mflags(&rdc_u_info[p->index],
1985 1979 (rdc_get_vflags(uold) & RDC_MFLAGS));
1986 1980
1987 1981 rdc_many_exit(old);
1988 1982 }
1989 1983
1990 1984
1991 1985 static int
1992 1986 _rdc_enable(rdc_set_t *rdc_set, int options, spcs_s_info_t kstatus)
1993 1987 {
1994 1988 int index;
1995 1989 char *rhost;
1996 1990 struct netbuf *addrp;
1997 1991 rdc_k_info_t *krdc;
1998 1992 rdc_u_info_t *urdc;
1999 1993 rdc_srv_t *svp = NULL;
2000 1994 char *local_file;
2001 1995 char *local_bitmap;
2002 1996 char *diskq;
2003 1997 int rc;
2004 1998 nsc_size_t maxfbas;
2005 1999 rdc_group_t *grp;
2006 2000
2007 2001 if ((rdc_set->primary.intf[0] == 0) ||
2008 2002 (rdc_set->primary.addr.len == 0) ||
2009 2003 (rdc_set->primary.file[0] == 0) ||
2010 2004 (rdc_set->primary.bitmap[0] == 0) ||
2011 2005 (rdc_set->secondary.intf[0] == 0) ||
2012 2006 (rdc_set->secondary.addr.len == 0) ||
2013 2007 (rdc_set->secondary.file[0] == 0) ||
2014 2008 (rdc_set->secondary.bitmap[0] == 0)) {
2015 2009 spcs_s_add(kstatus, RDC_EEMPTY);
2016 2010 return (RDC_EEMPTY);
2017 2011 }
2018 2012
2019 2013 /* Next check there aren't any enabled rdc sets which match. */
2020 2014
2021 2015 mutex_enter(&rdc_conf_lock);
2022 2016
2023 2017 if (rdc_lookup_byname(rdc_set) >= 0) {
2024 2018 mutex_exit(&rdc_conf_lock);
2025 2019 spcs_s_add(kstatus, RDC_EENABLED, rdc_set->primary.intf,
2026 2020 rdc_set->primary.file, rdc_set->secondary.intf,
2027 2021 rdc_set->secondary.file);
2028 2022 return (RDC_EENABLED);
2029 2023 }
2030 2024
2031 2025 if (rdc_lookup_many2one(rdc_set) >= 0) {
2032 2026 mutex_exit(&rdc_conf_lock);
2033 2027 spcs_s_add(kstatus, RDC_EMANY2ONE, rdc_set->primary.intf,
2034 2028 rdc_set->primary.file, rdc_set->secondary.intf,
2035 2029 rdc_set->secondary.file);
2036 2030 return (RDC_EMANY2ONE);
2037 2031 }
2038 2032
2039 2033 if (rdc_set->netconfig->knc_proto == NULL) {
2040 2034 mutex_exit(&rdc_conf_lock);
2041 2035 spcs_s_add(kstatus, RDC_ENETCONFIG);
2042 2036 return (RDC_ENETCONFIG);
2043 2037 }
2044 2038
2045 2039 if (rdc_set->primary.addr.len == 0) {
2046 2040 mutex_exit(&rdc_conf_lock);
2047 2041 spcs_s_add(kstatus, RDC_ENETBUF, rdc_set->primary.file);
2048 2042 return (RDC_ENETBUF);
2049 2043 }
2050 2044
2051 2045 if (rdc_set->secondary.addr.len == 0) {
2052 2046 mutex_exit(&rdc_conf_lock);
2053 2047 spcs_s_add(kstatus, RDC_ENETBUF, rdc_set->secondary.file);
2054 2048 return (RDC_ENETBUF);
2055 2049 }
2056 2050
2057 2051 /* Check that the local data volume isn't in use as a bitmap */
2058 2052 if (options & RDC_OPT_PRIMARY)
2059 2053 local_file = rdc_set->primary.file;
2060 2054 else
2061 2055 local_file = rdc_set->secondary.file;
2062 2056 if (rdc_lookup_bitmap(local_file) >= 0) {
2063 2057 mutex_exit(&rdc_conf_lock);
2064 2058 spcs_s_add(kstatus, RDC_EVOLINUSE, local_file);
2065 2059 return (RDC_EVOLINUSE);
2066 2060 }
2067 2061
2068 2062 /* check that the secondary data volume isn't in use */
2069 2063 if (!(options & RDC_OPT_PRIMARY)) {
2070 2064 local_file = rdc_set->secondary.file;
2071 2065 if (rdc_lookup_secondary(local_file) >= 0) {
2072 2066 mutex_exit(&rdc_conf_lock);
2073 2067 spcs_s_add(kstatus, RDC_EVOLINUSE, local_file);
2074 2068 return (RDC_EVOLINUSE);
2075 2069 }
2076 2070 }
2077 2071
2078 2072 /* check that the local data vol is not in use as a diskqueue */
2079 2073 if (options & RDC_OPT_PRIMARY) {
2080 2074 if (rdc_lookup_diskq(rdc_set->primary.file) >= 0) {
2081 2075 mutex_exit(&rdc_conf_lock);
2082 2076 spcs_s_add(kstatus,
2083 2077 RDC_EVOLINUSE, rdc_set->primary.file);
2084 2078 return (RDC_EVOLINUSE);
2085 2079 }
2086 2080 }
2087 2081
2088 2082 /* Check that the bitmap isn't in use as a data volume */
2089 2083 if (options & RDC_OPT_PRIMARY)
2090 2084 local_bitmap = rdc_set->primary.bitmap;
2091 2085 else
2092 2086 local_bitmap = rdc_set->secondary.bitmap;
2093 2087 if (rdc_lookup_configured(local_bitmap) >= 0) {
2094 2088 mutex_exit(&rdc_conf_lock);
2095 2089 spcs_s_add(kstatus, RDC_EBMPINUSE, local_bitmap);
2096 2090 return (RDC_EBMPINUSE);
2097 2091 }
2098 2092
2099 2093 /* Check that the bitmap isn't already in use as a bitmap */
2100 2094 if (rdc_lookup_bitmap(local_bitmap) >= 0) {
2101 2095 mutex_exit(&rdc_conf_lock);
2102 2096 spcs_s_add(kstatus, RDC_EBMPINUSE, local_bitmap);
2103 2097 return (RDC_EBMPINUSE);
2104 2098 }
2105 2099
2106 2100 /* check that the diskq (if here) is not in use */
2107 2101 diskq = rdc_set->disk_queue;
2108 2102 if (diskq[0] && rdc_diskq_inuse(rdc_set, diskq)) {
2109 2103 mutex_exit(&rdc_conf_lock);
2110 2104 spcs_s_add(kstatus, RDC_EDISKQINUSE, diskq);
2111 2105 return (RDC_EDISKQINUSE);
2112 2106 }
2113 2107
2114 2108
2115 2109 /* Set urdc->volume_size */
2116 2110 index = rdc_dev_open(rdc_set, options);
2117 2111 if (index < 0) {
2118 2112 mutex_exit(&rdc_conf_lock);
2119 2113 if (options & RDC_OPT_PRIMARY)
2120 2114 spcs_s_add(kstatus, RDC_EOPEN, rdc_set->primary.intf,
2121 2115 rdc_set->primary.file);
2122 2116 else
2123 2117 spcs_s_add(kstatus, RDC_EOPEN, rdc_set->secondary.intf,
2124 2118 rdc_set->secondary.file);
2125 2119 return (RDC_EOPEN);
2126 2120 }
2127 2121
2128 2122 urdc = &rdc_u_info[index];
2129 2123 krdc = &rdc_k_info[index];
2130 2124
2131 2125 /* copy relevant parts of rdc_set to urdc field by field */
2132 2126
2133 2127 (void) strncpy(urdc->primary.intf, rdc_set->primary.intf,
2134 2128 MAX_RDC_HOST_SIZE);
2135 2129 (void) strncpy(urdc->secondary.intf, rdc_set->secondary.intf,
2136 2130 MAX_RDC_HOST_SIZE);
2137 2131
2138 2132 (void) strncpy(urdc->group_name, rdc_set->group_name, NSC_MAXPATH);
2139 2133 (void) strncpy(urdc->disk_queue, rdc_set->disk_queue, NSC_MAXPATH);
2140 2134
2141 2135 dup_rdc_netbuf(&rdc_set->primary.addr, &urdc->primary.addr);
2142 2136 (void) strncpy(urdc->primary.file, rdc_set->primary.file, NSC_MAXPATH);
2143 2137 (void) strncpy(urdc->primary.bitmap, rdc_set->primary.bitmap,
2144 2138 NSC_MAXPATH);
2145 2139
2146 2140 dup_rdc_netbuf(&rdc_set->secondary.addr, &urdc->secondary.addr);
2147 2141 (void) strncpy(urdc->secondary.file, rdc_set->secondary.file,
2148 2142 NSC_MAXPATH);
2149 2143 (void) strncpy(urdc->secondary.bitmap, rdc_set->secondary.bitmap,
2150 2144 NSC_MAXPATH);
2151 2145
2152 2146 urdc->setid = rdc_set->setid;
2153 2147
2154 2148 /*
2155 2149 * before we try to add to group, or create one, check out
2156 2150 * if we are doing the wrong thing with the diskq
2157 2151 */
2158 2152
2159 2153 if (urdc->disk_queue[0] && (options & RDC_OPT_SYNC)) {
2160 2154 mutex_exit(&rdc_conf_lock);
2161 2155 rdc_dev_close(krdc);
2162 2156 spcs_s_add(kstatus, RDC_EQWRONGMODE);
2163 2157 return (RDC_EQWRONGMODE);
2164 2158 }
2165 2159
2166 2160 if ((rc = add_to_group(krdc, options, RDC_CMD_ENABLE)) != 0) {
2167 2161 mutex_exit(&rdc_conf_lock);
2168 2162 rdc_dev_close(krdc);
2169 2163 if (rc == RDC_EQNOADD) {
2170 2164 spcs_s_add(kstatus, RDC_EQNOADD, rdc_set->disk_queue);
2171 2165 return (RDC_EQNOADD);
2172 2166 } else {
2173 2167 spcs_s_add(kstatus, RDC_EGROUP,
2174 2168 rdc_set->primary.intf, rdc_set->primary.file,
2175 2169 rdc_set->secondary.intf, rdc_set->secondary.file,
2176 2170 rdc_set->group_name);
2177 2171 return (RDC_EGROUP);
2178 2172 }
2179 2173 }
2180 2174
2181 2175 /*
2182 2176 * maxfbas was set in rdc_dev_open as primary's maxfbas.
2183 2177 * If diskq's maxfbas is smaller, then use diskq's.
2184 2178 */
2185 2179 grp = krdc->group;
2186 2180 if (grp && RDC_IS_DISKQ(grp) && (grp->diskqfd != 0)) {
2187 2181 rc = _rdc_rsrv_diskq(grp);
2188 2182 if (RDC_SUCCESS(rc)) {
2189 2183 rc = nsc_maxfbas(grp->diskqfd, 0, &maxfbas);
2190 2184 if (rc == 0) {
2191 2185 #ifdef DEBUG
2192 2186 if (krdc->maxfbas != maxfbas)
2193 2187 cmn_err(CE_NOTE,
2194 2188 "!_rdc_enable: diskq maxfbas = %"
2195 2189 NSC_SZFMT ", primary maxfbas = %"
2196 2190 NSC_SZFMT, maxfbas, krdc->maxfbas);
2197 2191 #endif
2198 2192 krdc->maxfbas = min(krdc->maxfbas, maxfbas);
2199 2193 } else {
2200 2194 cmn_err(CE_WARN,
2201 2195 "!_rdc_enable: diskq maxfbas failed (%d)",
2202 2196 rc);
2203 2197 }
2204 2198 _rdc_rlse_diskq(grp);
2205 2199 } else {
2206 2200 cmn_err(CE_WARN,
2207 2201 "!_rdc_enable: diskq reserve failed (%d)", rc);
2208 2202 }
2209 2203 }
2210 2204
2211 2205 rdc_init_flags(urdc);
2212 2206 (void) strncpy(urdc->direct_file, rdc_set->direct_file, NSC_MAXPATH);
2213 2207 if ((options & RDC_OPT_PRIMARY) && rdc_set->direct_file[0]) {
2214 2208 if (rdc_open_direct(krdc) == NULL)
2215 2209 rdc_set_flags(urdc, RDC_FCAL_FAILED);
2216 2210 }
2217 2211
2218 2212 krdc->many_next = krdc;
2219 2213
2220 2214 ASSERT(krdc->type_flag == 0);
2221 2215 krdc->type_flag = RDC_CONFIGURED;
2222 2216
2223 2217 if (options & RDC_OPT_PRIMARY)
2224 2218 rdc_set_flags(urdc, RDC_PRIMARY);
2225 2219
2226 2220 if (options & RDC_OPT_ASYNC)
2227 2221 krdc->type_flag |= RDC_ASYNCMODE;
2228 2222
2229 2223 set_busy(krdc);
2230 2224 urdc->syshostid = rdc_set->syshostid;
2231 2225
2232 2226 if (add_to_many(krdc) < 0) {
2233 2227 mutex_exit(&rdc_conf_lock);
2234 2228
2235 2229 rdc_group_enter(krdc);
2236 2230
2237 2231 spcs_s_add(kstatus, RDC_EMULTI);
2238 2232 rc = RDC_EMULTI;
2239 2233 goto fail;
2240 2234 }
2241 2235
2242 2236 /* Configured but not enabled */
2243 2237 ASSERT(IS_CONFIGURED(krdc) && !IS_ENABLED(urdc));
2244 2238
2245 2239 mutex_exit(&rdc_conf_lock);
2246 2240
2247 2241 rdc_group_enter(krdc);
2248 2242
2249 2243 /* Configured but not enabled */
2250 2244 ASSERT(IS_CONFIGURED(krdc) && !IS_ENABLED(urdc));
2251 2245
2252 2246 /*
2253 2247 * The rdc set is configured but not yet enabled. Other operations must
2254 2248 * ignore this set until it is enabled.
2255 2249 */
2256 2250
2257 2251 urdc->sync_pos = 0;
2258 2252
2259 2253 if (rdc_set->maxqfbas > 0)
2260 2254 urdc->maxqfbas = rdc_set->maxqfbas;
2261 2255 else
2262 2256 urdc->maxqfbas = rdc_maxthres_queue;
2263 2257
2264 2258 if (rdc_set->maxqitems > 0)
2265 2259 urdc->maxqitems = rdc_set->maxqitems;
2266 2260 else
2267 2261 urdc->maxqitems = rdc_max_qitems;
2268 2262
2269 2263 if (rdc_set->asyncthr > 0)
2270 2264 urdc->asyncthr = rdc_set->asyncthr;
2271 2265 else
2272 2266 urdc->asyncthr = rdc_asyncthr;
2273 2267
2274 2268 if (urdc->autosync == -1) {
2275 2269 /* Still unknown */
2276 2270 if (rdc_set->autosync > 0)
2277 2271 urdc->autosync = 1;
2278 2272 else
2279 2273 urdc->autosync = 0;
2280 2274 }
2281 2275
2282 2276 urdc->netconfig = rdc_set->netconfig;
2283 2277
2284 2278 if (options & RDC_OPT_PRIMARY) {
2285 2279 rhost = rdc_set->secondary.intf;
2286 2280 addrp = &rdc_set->secondary.addr;
2287 2281 } else {
2288 2282 rhost = rdc_set->primary.intf;
2289 2283 addrp = &rdc_set->primary.addr;
2290 2284 }
2291 2285
2292 2286 if (options & RDC_OPT_ASYNC)
2293 2287 rdc_set_flags(urdc, RDC_ASYNC);
2294 2288
2295 2289 svp = rdc_create_svinfo(rhost, addrp, urdc->netconfig);
2296 2290 if (svp == NULL) {
2297 2291 spcs_s_add(kstatus, ENOMEM);
2298 2292 rc = ENOMEM;
2299 2293 goto fail;
2300 2294 }
2301 2295 urdc->netconfig = NULL; /* This will be no good soon */
2302 2296
2303 2297 rdc_kstat_create(index);
2304 2298
2305 2299 /* Don't set krdc->intf here */
2306 2300
2307 2301 if (rdc_enable_bitmap(krdc, options & RDC_OPT_SETBMP) < 0)
2308 2302 goto bmpfail;
2309 2303
2310 2304 RDC_ZERO_BITREF(krdc);
2311 2305 if (krdc->lsrv == NULL)
2312 2306 krdc->lsrv = svp;
2313 2307 else {
2314 2308 #ifdef DEBUG
2315 2309 cmn_err(CE_WARN, "!_rdc_enable: krdc->lsrv already set: %p",
2316 2310 (void *) krdc->lsrv);
2317 2311 #endif
2318 2312 rdc_destroy_svinfo(svp);
2319 2313 }
2320 2314 svp = NULL;
2321 2315
2322 2316 /* Configured but not enabled */
2323 2317 ASSERT(IS_CONFIGURED(krdc) && !IS_ENABLED(urdc));
2324 2318
2325 2319 /* And finally */
2326 2320
2327 2321 krdc->remote_index = -1;
2328 2322 /* Should we set the whole group logging? */
2329 2323 rdc_set_flags(urdc, RDC_ENABLED | RDC_LOGGING);
2330 2324
2331 2325 rdc_group_exit(krdc);
2332 2326
2333 2327 if (rdc_intercept(krdc) != 0) {
2334 2328 rdc_group_enter(krdc);
2335 2329 rdc_clr_flags(urdc, RDC_ENABLED);
2336 2330 if (options & RDC_OPT_PRIMARY)
2337 2331 spcs_s_add(kstatus, RDC_EREGISTER, urdc->primary.file);
2338 2332 else
2339 2333 spcs_s_add(kstatus, RDC_EREGISTER,
2340 2334 urdc->secondary.file);
2341 2335 #ifdef DEBUG
2342 2336 cmn_err(CE_NOTE, "!nsc_register_path failed %s",
2343 2337 urdc->primary.file);
2344 2338 #endif
2345 2339 rc = RDC_EREGISTER;
2346 2340 goto bmpfail;
2347 2341 }
2348 2342 #ifdef DEBUG
2349 2343 cmn_err(CE_NOTE, "!SNDR: enabled %s %s", urdc->primary.file,
2350 2344 urdc->secondary.file);
2351 2345 #endif
2352 2346
2353 2347 rdc_write_state(urdc);
2354 2348
2355 2349 mutex_enter(&rdc_conf_lock);
2356 2350 wakeup_busy(krdc);
2357 2351 mutex_exit(&rdc_conf_lock);
2358 2352
2359 2353 return (0);
2360 2354
2361 2355 bmpfail:
2362 2356 if (options & RDC_OPT_PRIMARY)
2363 2357 spcs_s_add(kstatus, RDC_EBITMAP, rdc_set->primary.bitmap);
2364 2358 else
2365 2359 spcs_s_add(kstatus, RDC_EBITMAP, rdc_set->secondary.bitmap);
2366 2360 rc = RDC_EBITMAP;
2367 2361 if (rdc_get_vflags(urdc) & RDC_ENABLED) {
2368 2362 rdc_group_exit(krdc);
2369 2363 (void) rdc_unintercept(krdc);
2370 2364 rdc_group_enter(krdc);
2371 2365 }
2372 2366
2373 2367 fail:
2374 2368 rdc_kstat_delete(index);
2375 2369 rdc_group_exit(krdc);
2376 2370 if (krdc->intf) {
2377 2371 rdc_if_t *ip = krdc->intf;
2378 2372 mutex_enter(&rdc_conf_lock);
2379 2373 krdc->intf = NULL;
2380 2374 rdc_remove_from_if(ip);
2381 2375 mutex_exit(&rdc_conf_lock);
2382 2376 }
2383 2377 rdc_group_enter(krdc);
2384 2378 /* Configured but not enabled */
2385 2379 ASSERT(IS_CONFIGURED(krdc) && !IS_ENABLED(urdc));
2386 2380
2387 2381 rdc_dev_close(krdc);
2388 2382 rdc_close_direct(krdc);
2389 2383 rdc_destroy_svinfo(svp);
2390 2384
2391 2385 /* Configured but not enabled */
2392 2386 ASSERT(IS_CONFIGURED(krdc) && !IS_ENABLED(urdc));
2393 2387
2394 2388 rdc_group_exit(krdc);
2395 2389
2396 2390 mutex_enter(&rdc_conf_lock);
2397 2391
2398 2392 /* Configured but not enabled */
2399 2393 ASSERT(IS_CONFIGURED(krdc) && !IS_ENABLED(urdc));
2400 2394
2401 2395 remove_from_group(krdc);
2402 2396
2403 2397 if (IS_MANY(krdc) || IS_MULTI(krdc))
2404 2398 remove_from_many(krdc);
2405 2399
2406 2400 rdc_u_init(urdc);
2407 2401
2408 2402 ASSERT(krdc->type_flag & RDC_CONFIGURED);
2409 2403 krdc->type_flag = 0;
2410 2404 wakeup_busy(krdc);
2411 2405
2412 2406 mutex_exit(&rdc_conf_lock);
2413 2407
2414 2408 return (rc);
2415 2409 }
2416 2410
2417 2411 static int
2418 2412 rdc_enable(rdc_config_t *uparms, spcs_s_info_t kstatus)
2419 2413 {
2420 2414 int rc;
2421 2415 char itmp[10];
2422 2416
2423 2417 if (!(uparms->options & RDC_OPT_SYNC) &&
2424 2418 !(uparms->options & RDC_OPT_ASYNC)) {
2425 2419 rc = RDC_EEINVAL;
2426 2420 (void) spcs_s_inttostring(
2427 2421 uparms->options, itmp, sizeof (itmp), 1);
2428 2422 spcs_s_add(kstatus, RDC_EEINVAL, itmp);
2429 2423 goto done;
2430 2424 }
2431 2425
2432 2426 if (!(uparms->options & RDC_OPT_PRIMARY) &&
2433 2427 !(uparms->options & RDC_OPT_SECONDARY)) {
2434 2428 rc = RDC_EEINVAL;
2435 2429 (void) spcs_s_inttostring(
2436 2430 uparms->options, itmp, sizeof (itmp), 1);
2437 2431 spcs_s_add(kstatus, RDC_EEINVAL, itmp);
2438 2432 goto done;
2439 2433 }
2440 2434
2441 2435 if (!(uparms->options & RDC_OPT_SETBMP) &&
2442 2436 !(uparms->options & RDC_OPT_CLRBMP)) {
2443 2437 rc = RDC_EEINVAL;
2444 2438 (void) spcs_s_inttostring(
2445 2439 uparms->options, itmp, sizeof (itmp), 1);
2446 2440 spcs_s_add(kstatus, RDC_EEINVAL, itmp);
2447 2441 goto done;
2448 2442 }
2449 2443
2450 2444 rc = _rdc_enable(uparms->rdc_set, uparms->options, kstatus);
2451 2445 done:
2452 2446 return (rc);
2453 2447 }
2454 2448
2455 2449 /* ARGSUSED */
2456 2450 static int
2457 2451 _rdc_disable(rdc_k_info_t *krdc, rdc_config_t *uap, spcs_s_info_t kstatus)
2458 2452 {
2459 2453 rdc_u_info_t *urdc = &rdc_u_info[krdc->index];
2460 2454 rdc_if_t *ip;
2461 2455 int index = krdc->index;
2462 2456 disk_queue *q;
2463 2457 rdc_set_t *rdc_set = uap->rdc_set;
2464 2458
2465 2459 ASSERT(krdc->group != NULL);
2466 2460 rdc_group_enter(krdc);
2467 2461 #ifdef DEBUG
2468 2462 ASSERT(rdc_check(krdc, rdc_set) == 0);
2469 2463 #else
2470 2464 if (((uap->options & RDC_OPT_FORCE_DISABLE) == 0) &&
2471 2465 rdc_check(krdc, rdc_set)) {
2472 2466 rdc_group_exit(krdc);
2473 2467 spcs_s_add(kstatus, RDC_EALREADY, rdc_set->primary.file,
2474 2468 rdc_set->secondary.file);
2475 2469 return (RDC_EALREADY);
2476 2470 }
2477 2471 #endif
2478 2472
2479 2473 if (rdc_get_vflags(urdc) & RDC_PRIMARY) {
2480 2474 halt_sync(krdc);
2481 2475 ASSERT(IS_ENABLED(urdc));
2482 2476 }
2483 2477 q = &krdc->group->diskq;
2484 2478
2485 2479 if (IS_ASYNC(urdc) && RDC_IS_DISKQ(krdc->group) &&
2486 2480 ((!IS_STATE(urdc, RDC_LOGGING)) && (!QEMPTY(q)))) {
2487 2481 krdc->type_flag &= ~RDC_DISABLEPEND;
2488 2482 rdc_group_exit(krdc);
2489 2483 spcs_s_add(kstatus, RDC_EQNOTEMPTY, urdc->disk_queue);
2490 2484 return (RDC_EQNOTEMPTY);
2491 2485 }
2492 2486 rdc_group_exit(krdc);
2493 2487 (void) rdc_unintercept(krdc);
2494 2488
2495 2489 #ifdef DEBUG
2496 2490 cmn_err(CE_NOTE, "!SNDR: disabled %s %s", urdc->primary.file,
2497 2491 urdc->secondary.file);
2498 2492 #endif
2499 2493
2500 2494 /* Configured but not enabled */
2501 2495 ASSERT(IS_CONFIGURED(krdc) && !IS_ENABLED(urdc));
2502 2496
2503 2497 /*
2504 2498 * No new io can come in through the io provider.
2505 2499 * Wait for the async flusher to finish.
2506 2500 */
2507 2501
2508 2502 if (IS_ASYNC(urdc) && !RDC_IS_DISKQ(krdc->group)) {
2509 2503 int tries = 2; /* in case of hopelessly stuck flusher threads */
2510 2504 #ifdef DEBUG
2511 2505 net_queue *qp = &krdc->group->ra_queue;
2512 2506 #endif
2513 2507 do {
2514 2508 if (!krdc->group->rdc_writer)
2515 2509 (void) rdc_writer(krdc->index);
2516 2510
2517 2511 (void) rdc_drain_queue(krdc->index);
2518 2512
2519 2513 } while (krdc->group->rdc_writer && tries--);
2520 2514
2521 2515 /* ok, force it to happen... */
2522 2516 if (rdc_drain_queue(krdc->index) != 0) {
2523 2517 do {
2524 2518 mutex_enter(&krdc->group->ra_queue.net_qlock);
2525 2519 krdc->group->asyncdis = 1;
2526 2520 cv_broadcast(&krdc->group->asyncqcv);
2527 2521 mutex_exit(&krdc->group->ra_queue.net_qlock);
2528 2522 cmn_err(CE_WARN,
2529 2523 "!SNDR: async I/O pending and not flushed "
2530 2524 "for %s during disable",
2531 2525 urdc->primary.file);
2532 2526 #ifdef DEBUG
2533 2527 cmn_err(CE_WARN,
2534 2528 "!nitems: %" NSC_SZFMT " nblocks: %"
2535 2529 NSC_SZFMT " head: 0x%p tail: 0x%p",
2536 2530 qp->nitems, qp->blocks,
2537 2531 (void *)qp->net_qhead,
2538 2532 (void *)qp->net_qtail);
2539 2533 #endif
2540 2534 } while (krdc->group->rdc_thrnum > 0);
2541 2535 }
2542 2536 }
2543 2537
2544 2538 mutex_enter(&rdc_conf_lock);
2545 2539 ip = krdc->intf;
2546 2540 krdc->intf = 0;
2547 2541
2548 2542 if (ip) {
2549 2543 rdc_remove_from_if(ip);
2550 2544 }
2551 2545
2552 2546 mutex_exit(&rdc_conf_lock);
2553 2547
2554 2548 rdc_group_enter(krdc);
2555 2549
2556 2550 /* Configured but not enabled */
2557 2551 ASSERT(IS_CONFIGURED(krdc) && !IS_ENABLED(urdc));
2558 2552
2559 2553 /* Must not hold group lock during this function */
2560 2554 rdc_group_exit(krdc);
2561 2555 while (rdc_dump_alloc_bufs_cd(krdc->index) == EAGAIN)
2562 2556 delay(2);
2563 2557 rdc_group_enter(krdc);
2564 2558
2565 2559 (void) rdc_clear_state(krdc);
2566 2560
2567 2561 rdc_free_bitmap(krdc, RDC_CMD_DISABLE);
2568 2562 rdc_close_bitmap(krdc);
2569 2563
2570 2564 rdc_dev_close(krdc);
2571 2565 rdc_close_direct(krdc);
2572 2566
2573 2567 /* Configured but not enabled */
2574 2568 ASSERT(IS_CONFIGURED(krdc) && !IS_ENABLED(urdc));
2575 2569
2576 2570 rdc_group_exit(krdc);
2577 2571
2578 2572 /*
2579 2573 * we should now unregister the queue, with no conflicting
2580 2574 * locks held. This is the last(only) member of the group
2581 2575 */
2582 2576 if (krdc->group && RDC_IS_DISKQ(krdc->group) &&
2583 2577 krdc->group->count == 1) { /* stop protecting queue */
2584 2578 rdc_unintercept_diskq(krdc->group);
2585 2579 }
2586 2580
2587 2581 mutex_enter(&rdc_conf_lock);
2588 2582
2589 2583 /* Configured but not enabled */
2590 2584 ASSERT(IS_CONFIGURED(krdc) && !IS_ENABLED(urdc));
2591 2585
2592 2586 wait_busy(krdc);
2593 2587
2594 2588 if (IS_MANY(krdc) || IS_MULTI(krdc))
2595 2589 remove_from_many(krdc);
2596 2590
2597 2591 remove_from_group(krdc);
2598 2592
2599 2593 krdc->remote_index = -1;
2600 2594 ASSERT(krdc->type_flag & RDC_CONFIGURED);
2601 2595 ASSERT(krdc->type_flag & RDC_DISABLEPEND);
2602 2596 krdc->type_flag = 0;
2603 2597 #ifdef DEBUG
2604 2598 if (krdc->dcio_bitmap)
2605 2599 cmn_err(CE_WARN, "!_rdc_disable: possible mem leak, "
2606 2600 "dcio_bitmap");
2607 2601 #endif
2608 2602 krdc->dcio_bitmap = NULL;
2609 2603 krdc->bitmap_ref = NULL;
2610 2604 krdc->bitmap_size = 0;
2611 2605 krdc->maxfbas = 0;
2612 2606 krdc->bitmap_write = 0;
2613 2607 krdc->disk_status = 0;
2614 2608 rdc_destroy_svinfo(krdc->lsrv);
2615 2609 krdc->lsrv = NULL;
2616 2610 krdc->multi_next = NULL;
2617 2611
2618 2612 rdc_u_init(urdc);
2619 2613
2620 2614 mutex_exit(&rdc_conf_lock);
2621 2615 rdc_kstat_delete(index);
2622 2616
2623 2617 return (0);
2624 2618 }
2625 2619
2626 2620 static int
2627 2621 rdc_disable(rdc_config_t *uparms, spcs_s_info_t kstatus)
2628 2622 {
2629 2623 rdc_k_info_t *krdc;
2630 2624 int index;
2631 2625 int rc;
2632 2626
2633 2627 mutex_enter(&rdc_conf_lock);
2634 2628
2635 2629 index = rdc_lookup_byname(uparms->rdc_set);
2636 2630 if (index >= 0)
2637 2631 krdc = &rdc_k_info[index];
2638 2632 if (index < 0 || (krdc->type_flag & RDC_DISABLEPEND)) {
2639 2633 mutex_exit(&rdc_conf_lock);
2640 2634 spcs_s_add(kstatus, RDC_EALREADY, uparms->rdc_set->primary.file,
2641 2635 uparms->rdc_set->secondary.file);
2642 2636 return (RDC_EALREADY);
2643 2637 }
2644 2638
2645 2639 krdc->type_flag |= RDC_DISABLEPEND;
2646 2640 wait_busy(krdc);
2647 2641 if (krdc->type_flag == 0) {
2648 2642 /* A resume or enable failed */
2649 2643 mutex_exit(&rdc_conf_lock);
2650 2644 spcs_s_add(kstatus, RDC_EALREADY, uparms->rdc_set->primary.file,
2651 2645 uparms->rdc_set->secondary.file);
2652 2646 return (RDC_EALREADY);
2653 2647 }
2654 2648 mutex_exit(&rdc_conf_lock);
2655 2649
2656 2650 rc = _rdc_disable(krdc, uparms, kstatus);
2657 2651 return (rc);
2658 2652 }
2659 2653
2660 2654
2661 2655 /*
2662 2656 * Checks whether the state of one of the other sets in the 1-many or
2663 2657 * multi-hop config should prevent a sync from starting on this one.
2664 2658 * Return NULL if no just cause or impediment is found, otherwise return
2665 2659 * a pointer to the offending set.
2666 2660 */
2667 2661 static rdc_u_info_t *
2668 2662 rdc_allow_pri_sync(rdc_u_info_t *urdc, int options)
2669 2663 {
2670 2664 rdc_k_info_t *krdc = &rdc_k_info[urdc->index];
2671 2665 rdc_k_info_t *ktmp;
2672 2666 rdc_u_info_t *utmp;
2673 2667 rdc_k_info_t *kmulti = NULL;
2674 2668
2675 2669 ASSERT(rdc_get_vflags(urdc) & RDC_PRIMARY);
2676 2670
2677 2671 rdc_many_enter(krdc);
2678 2672
2679 2673 /*
2680 2674 * In the reverse sync case we need to check the previous leg of
2681 2675 * the multi-hop config. The link to that set can be from any of
2682 2676 * the 1-many list, so as we go through we keep an eye open for it.
2683 2677 */
2684 2678 if ((options & RDC_OPT_REVERSE) && (IS_MULTI(krdc))) {
2685 2679 /* This set links to the first leg */
2686 2680 ktmp = krdc->multi_next;
2687 2681 utmp = &rdc_u_info[ktmp->index];
2688 2682 if (IS_ENABLED(utmp))
2689 2683 kmulti = ktmp;
2690 2684 }
2691 2685
2692 2686 if (IS_MANY(krdc)) {
2693 2687 for (ktmp = krdc->many_next; ktmp != krdc;
2694 2688 ktmp = ktmp->many_next) {
2695 2689 utmp = &rdc_u_info[ktmp->index];
2696 2690
2697 2691 if (!IS_ENABLED(utmp))
2698 2692 continue;
2699 2693
2700 2694 if (options & RDC_OPT_FORWARD) {
2701 2695 /*
2702 2696 * Reverse sync needed is bad, as it means a
2703 2697 * reverse sync in progress or started and
2704 2698 * didn't complete, so this primary volume
2705 2699 * is not consistent. So we shouldn't copy
2706 2700 * it to its secondary.
2707 2701 */
2708 2702 if (rdc_get_mflags(utmp) & RDC_RSYNC_NEEDED) {
2709 2703 rdc_many_exit(krdc);
2710 2704 return (utmp);
2711 2705 }
2712 2706 } else {
2713 2707 /* Reverse, so see if we need to spot kmulti */
2714 2708 if ((kmulti == NULL) && (IS_MULTI(ktmp))) {
2715 2709 /* This set links to the first leg */
2716 2710 kmulti = ktmp->multi_next;
2717 2711 if (!IS_ENABLED(
2718 2712 &rdc_u_info[kmulti->index]))
2719 2713 kmulti = NULL;
2720 2714 }
2721 2715
2722 2716 /*
2723 2717 * Non-logging is bad, as the bitmap will
2724 2718 * be updated with the bits for this sync.
2725 2719 */
2726 2720 if (!(rdc_get_vflags(utmp) & RDC_LOGGING)) {
2727 2721 rdc_many_exit(krdc);
2728 2722 return (utmp);
2729 2723 }
2730 2724 }
2731 2725 }
2732 2726 }
2733 2727
2734 2728 if (kmulti) {
2735 2729 utmp = &rdc_u_info[kmulti->index];
2736 2730 ktmp = kmulti; /* In case we decide we do need to use ktmp */
2737 2731
2738 2732 ASSERT(options & RDC_OPT_REVERSE);
2739 2733
2740 2734 if (IS_REPLICATING(utmp)) {
2741 2735 /*
2742 2736 * Replicating is bad as data is already flowing to
2743 2737 * the target of the requested sync operation.
2744 2738 */
2745 2739 rdc_many_exit(krdc);
2746 2740 return (utmp);
2747 2741 }
2748 2742
2749 2743 if (rdc_get_vflags(utmp) & RDC_SYNCING) {
2750 2744 /*
2751 2745 * Forward sync in progress is bad, as data is
2752 2746 * already flowing to the target of the requested
2753 2747 * sync operation.
2754 2748 * Reverse sync in progress is bad, as the primary
2755 2749 * has already decided which data to copy.
2756 2750 */
2757 2751 rdc_many_exit(krdc);
2758 2752 return (utmp);
2759 2753 }
2760 2754
2761 2755 /*
2762 2756 * Clear the "sync needed" flags, as the multi-hop secondary
2763 2757 * will be updated via this requested sync operation, so does
2764 2758 * not need to complete its aborted forward sync.
2765 2759 */
2766 2760 if (rdc_get_vflags(utmp) & RDC_SYNC_NEEDED)
2767 2761 rdc_clr_flags(utmp, RDC_SYNC_NEEDED);
2768 2762 }
2769 2763
2770 2764 if (IS_MANY(krdc) && (options & RDC_OPT_REVERSE)) {
2771 2765 for (ktmp = krdc->many_next; ktmp != krdc;
2772 2766 ktmp = ktmp->many_next) {
2773 2767 utmp = &rdc_u_info[ktmp->index];
2774 2768 if (!IS_ENABLED(utmp))
2775 2769 continue;
2776 2770
2777 2771 /*
2778 2772 * Clear any "reverse sync needed" flags, as the
2779 2773 * volume will be updated via this requested
2780 2774 * sync operation, so does not need to complete
2781 2775 * its aborted reverse sync.
2782 2776 */
2783 2777 if (rdc_get_mflags(utmp) & RDC_RSYNC_NEEDED)
2784 2778 rdc_clr_mflags(utmp, RDC_RSYNC_NEEDED);
2785 2779 }
2786 2780 }
2787 2781
2788 2782 rdc_many_exit(krdc);
2789 2783
2790 2784 return (NULL);
2791 2785 }
2792 2786
2793 2787 static void
2794 2788 _rdc_sync_wrthr(void *thrinfo)
2795 2789 {
2796 2790 rdc_syncthr_t *syncinfo = (rdc_syncthr_t *)thrinfo;
2797 2791 nsc_buf_t *handle = NULL;
2798 2792 rdc_k_info_t *krdc = syncinfo->krdc;
2799 2793 int rc;
2800 2794 int tries = 0;
2801 2795
2802 2796 DTRACE_PROBE2(rdc_sync_loop_netwrite_start, int, krdc->index,
2803 2797 nsc_buf_t *, handle);
2804 2798
2805 2799 retry:
2806 2800 rc = nsc_alloc_buf(RDC_U_FD(krdc), syncinfo->offset, syncinfo->len,
2807 2801 NSC_READ | NSC_NOCACHE, &handle);
2808 2802
2809 2803 if (!RDC_SUCCESS(rc) || krdc->remote_index < 0) {
2810 2804 DTRACE_PROBE(rdc_sync_wrthr_alloc_buf_err);
2811 2805 goto failed;
2812 2806 }
2813 2807
2814 2808 rdc_group_enter(krdc);
2815 2809 if ((krdc->disk_status == 1) || (krdc->dcio_bitmap == NULL)) {
2816 2810 rdc_group_exit(krdc);
2817 2811 goto failed;
2818 2812 }
2819 2813 rdc_group_exit(krdc);
2820 2814
2821 2815 if ((rc = rdc_net_write(krdc->index, krdc->remote_index, handle,
2822 2816 handle->sb_pos, handle->sb_len, RDC_NOSEQ, RDC_NOQUE, NULL)) > 0) {
2823 2817 rdc_u_info_t *urdc = &rdc_u_info[krdc->index];
2824 2818
2825 2819 /*
2826 2820 * The following is to handle
2827 2821 * the case where the secondary side
2828 2822 * has thrown our buffer handle token away in a
2829 2823 * attempt to preserve its health on restart
2830 2824 */
2831 2825 if ((rc == EPROTO) && (tries < 3)) {
2832 2826 (void) nsc_free_buf(handle);
2833 2827 handle = NULL;
2834 2828 tries++;
2835 2829 delay(HZ >> 2);
2836 2830 goto retry;
2837 2831 }
2838 2832
2839 2833 DTRACE_PROBE(rdc_sync_wrthr_remote_write_err);
2840 2834 cmn_err(CE_WARN, "!rdc_sync_wrthr: remote write failed (%d) "
2841 2835 "0x%x", rc, rdc_get_vflags(urdc));
2842 2836
2843 2837 goto failed;
2844 2838 }
2845 2839 (void) nsc_free_buf(handle);
2846 2840 handle = NULL;
2847 2841
2848 2842 return;
2849 2843 failed:
2850 2844 (void) nsc_free_buf(handle);
2851 2845 syncinfo->status->offset = syncinfo->offset;
2852 2846 }
2853 2847
2854 2848 /*
2855 2849 * see above comments on _rdc_sync_wrthr
2856 2850 */
2857 2851 static void
2858 2852 _rdc_sync_rdthr(void *thrinfo)
2859 2853 {
2860 2854 rdc_syncthr_t *syncinfo = (rdc_syncthr_t *)thrinfo;
2861 2855 nsc_buf_t *handle = NULL;
2862 2856 rdc_k_info_t *krdc = syncinfo->krdc;
2863 2857 rdc_u_info_t *urdc = &rdc_u_info[krdc->index];
2864 2858 int rc;
2865 2859
2866 2860 rc = nsc_alloc_buf(RDC_U_FD(krdc), syncinfo->offset, syncinfo->len,
2867 2861 NSC_WRITE | NSC_WRTHRU | NSC_NOCACHE, &handle);
2868 2862
2869 2863 if (!RDC_SUCCESS(rc) || krdc->remote_index < 0) {
2870 2864 goto failed;
2871 2865 }
2872 2866 rdc_group_enter(krdc);
2873 2867 if ((krdc->disk_status == 1) || (krdc->dcio_bitmap == NULL)) {
2874 2868 rdc_group_exit(krdc);
2875 2869 goto failed;
2876 2870 }
2877 2871 rdc_group_exit(krdc);
2878 2872
2879 2873 rc = rdc_net_read(krdc->index, krdc->remote_index, handle,
2880 2874 handle->sb_pos, handle->sb_len);
2881 2875
2882 2876 if (!RDC_SUCCESS(rc)) {
2883 2877 cmn_err(CE_WARN, "!rdc_sync_rdthr: remote read failed(%d)", rc);
2884 2878 goto failed;
2885 2879 }
2886 2880 if (!IS_STATE(urdc, RDC_FULL))
2887 2881 rdc_set_bitmap_many(krdc, handle->sb_pos, handle->sb_len);
2888 2882
2889 2883 rc = nsc_write(handle, handle->sb_pos, handle->sb_len, 0);
2890 2884
2891 2885 if (!RDC_SUCCESS(rc)) {
2892 2886 rdc_many_enter(krdc);
2893 2887 rdc_set_flags_log(urdc, RDC_VOL_FAILED, "nsc_write failed");
2894 2888 rdc_many_exit(krdc);
2895 2889 rdc_write_state(urdc);
2896 2890 goto failed;
2897 2891 }
2898 2892
2899 2893 (void) nsc_free_buf(handle);
2900 2894 handle = NULL;
2901 2895
2902 2896 return;
2903 2897 failed:
2904 2898 (void) nsc_free_buf(handle);
2905 2899 syncinfo->status->offset = syncinfo->offset;
2906 2900 }
2907 2901
2908 2902 /*
2909 2903 * _rdc_sync_wrthr
2910 2904 * sync loop write thread
2911 2905 * if there are avail threads, we have not
2912 2906 * used up the pipe, so the sync loop will, if
2913 2907 * possible use these to multithread the write/read
2914 2908 */
2915 2909 void
2916 2910 _rdc_sync_thread(void *thrinfo)
2917 2911 {
2918 2912 rdc_syncthr_t *syncinfo = (rdc_syncthr_t *)thrinfo;
2919 2913 rdc_k_info_t *krdc = syncinfo->krdc;
2920 2914 rdc_u_info_t *urdc = &rdc_u_info[krdc->index];
2921 2915 rdc_thrsync_t *sync = &krdc->syncs;
2922 2916 uint_t bitmask;
2923 2917 int rc;
2924 2918
2925 2919 rc = _rdc_rsrv_devs(krdc, RDC_RAW, RDC_INTERNAL);
2926 2920 if (!RDC_SUCCESS(rc))
2927 2921 goto failed;
2928 2922
2929 2923 if (IS_STATE(urdc, RDC_SLAVE))
2930 2924 _rdc_sync_rdthr(thrinfo);
2931 2925 else
2932 2926 _rdc_sync_wrthr(thrinfo);
2933 2927
2934 2928 _rdc_rlse_devs(krdc, RDC_RAW);
2935 2929
2936 2930 if (krdc->dcio_bitmap == NULL) {
2937 2931 #ifdef DEBUG
2938 2932 cmn_err(CE_NOTE, "!_rdc_sync_wrthr: NULL bitmap");
2939 2933 #else
2940 2934 /*EMPTY*/
2941 2935 #endif
2942 2936 } else if (syncinfo->status->offset < 0) {
2943 2937
2944 2938 RDC_SET_BITMASK(syncinfo->offset, syncinfo->len, &bitmask);
2945 2939 RDC_CLR_BITMAP(krdc, syncinfo->offset, syncinfo->len, \
2946 2940 bitmask, RDC_BIT_FORCE);
2947 2941 }
2948 2942
2949 2943 failed:
2950 2944 /*
2951 2945 * done with this, get rid of it.
2952 2946 * the status is not freed, it should still be a status chain
2953 2947 * that _rdc_sync() has the head of
2954 2948 */
2955 2949 kmem_free(syncinfo, sizeof (*syncinfo));
2956 2950
2957 2951 /*
2958 2952 * decrement the global sync thread num
2959 2953 */
2960 2954 mutex_enter(&sync_info.lock);
2961 2955 sync_info.active_thr--;
2962 2956 /* LINTED */
2963 2957 RDC_AVAIL_THR_TUNE(sync_info);
2964 2958 mutex_exit(&sync_info.lock);
2965 2959
2966 2960 /*
2967 2961 * krdc specific stuff
2968 2962 */
2969 2963 mutex_enter(&sync->lock);
2970 2964 sync->complete++;
2971 2965 cv_broadcast(&sync->cv);
2972 2966 mutex_exit(&sync->lock);
2973 2967 }
2974 2968
2975 2969 int
2976 2970 _rdc_setup_syncthr(rdc_syncthr_t **synthr, nsc_off_t offset,
2977 2971 nsc_size_t len, rdc_k_info_t *krdc, sync_status_t *stats)
2978 2972 {
2979 2973 rdc_syncthr_t *tmp;
2980 2974 /* alloc here, free in the sync thread */
2981 2975 tmp =
2982 2976 (rdc_syncthr_t *)kmem_zalloc(sizeof (rdc_syncthr_t), KM_NOSLEEP);
2983 2977
2984 2978 if (tmp == NULL)
2985 2979 return (-1);
2986 2980 tmp->offset = offset;
2987 2981 tmp->len = len;
2988 2982 tmp->status = stats;
2989 2983 tmp->krdc = krdc;
2990 2984
2991 2985 *synthr = tmp;
2992 2986 return (0);
2993 2987 }
2994 2988
2995 2989 sync_status_t *
2996 2990 _rdc_new_sync_status()
2997 2991 {
2998 2992 sync_status_t *s;
2999 2993
3000 2994 s = (sync_status_t *)kmem_zalloc(sizeof (*s), KM_NOSLEEP);
3001 2995 s->offset = -1;
3002 2996 return (s);
3003 2997 }
3004 2998
3005 2999 void
3006 3000 _rdc_free_sync_status(sync_status_t *status)
3007 3001 {
3008 3002 sync_status_t *s;
3009 3003
3010 3004 while (status) {
3011 3005 s = status->next;
3012 3006 kmem_free(status, sizeof (*status));
3013 3007 status = s;
3014 3008 }
3015 3009 }
3016 3010 int
3017 3011 _rdc_sync_status_ok(sync_status_t *status, int *offset)
3018 3012 {
3019 3013 #ifdef DEBUG_SYNCSTATUS
3020 3014 int i = 0;
3021 3015 #endif
3022 3016 while (status) {
3023 3017 if (status->offset >= 0) {
3024 3018 *offset = status->offset;
3025 3019 return (-1);
3026 3020 }
3027 3021 status = status->next;
3028 3022 #ifdef DEBUG_SYNCSTATUS
3029 3023 i++;
3030 3024 #endif
3031 3025 }
3032 3026 #ifdef DEBUGSYNCSTATUS
3033 3027 cmn_err(CE_NOTE, "!rdc_sync_status_ok: checked %d statuses", i);
3034 3028 #endif
3035 3029 return (0);
3036 3030 }
3037 3031
3038 3032 int mtsync = 1;
3039 3033 /*
3040 3034 * _rdc_sync() : rdc sync loop
3041 3035 *
3042 3036 */
3043 3037 static void
3044 3038 _rdc_sync(rdc_k_info_t *krdc)
3045 3039 {
3046 3040 nsc_size_t size = 0;
3047 3041 rdc_u_info_t *urdc = &rdc_u_info[krdc->index];
3048 3042 int rtype;
3049 3043 int sts;
3050 3044 int reserved = 0;
3051 3045 nsc_buf_t *alloc_h = NULL;
3052 3046 nsc_buf_t *handle = NULL;
3053 3047 nsc_off_t mask;
3054 3048 nsc_size_t maxbit;
3055 3049 nsc_size_t len;
3056 3050 nsc_off_t offset = 0;
3057 3051 int sync_completed = 0;
3058 3052 int tries = 0;
3059 3053 int rc;
3060 3054 int queuing = 0;
3061 3055 uint_t bitmask;
3062 3056 sync_status_t *ss, *sync_status = NULL;
3063 3057 rdc_thrsync_t *sync = &krdc->syncs;
3064 3058 rdc_syncthr_t *syncinfo;
3065 3059 nsthread_t *trc = NULL;
3066 3060
3067 3061 if (IS_STATE(urdc, RDC_QUEUING) && !IS_STATE(urdc, RDC_FULL)) {
3068 3062 /* flusher is handling the sync in the update case */
3069 3063 queuing = 1;
3070 3064 goto sync_done;
3071 3065 }
3072 3066
3073 3067 /*
3074 3068 * Main sync/resync loop
3075 3069 */
3076 3070 DTRACE_PROBE(rdc_sync_loop_start);
3077 3071
3078 3072 rtype = RDC_RAW;
3079 3073 sts = _rdc_rsrv_devs(krdc, rtype, RDC_INTERNAL);
3080 3074
3081 3075 DTRACE_PROBE(rdc_sync_loop_rsrv);
3082 3076
3083 3077 if (sts != 0)
3084 3078 goto failed_noincr;
3085 3079
3086 3080 reserved = 1;
3087 3081
3088 3082 /*
3089 3083 * pre-allocate a handle if we can - speeds up the sync.
3090 3084 */
3091 3085
3092 3086 if (rdc_prealloc_handle) {
3093 3087 alloc_h = nsc_alloc_handle(RDC_U_FD(krdc), NULL, NULL, NULL);
3094 3088 #ifdef DEBUG
3095 3089 if (!alloc_h) {
3096 3090 cmn_err(CE_WARN,
3097 3091 "!rdc sync: failed to pre-alloc handle");
3098 3092 }
3099 3093 #endif
3100 3094 } else {
3101 3095 alloc_h = NULL;
3102 3096 }
3103 3097
3104 3098 ASSERT(urdc->volume_size != 0);
3105 3099 size = urdc->volume_size;
3106 3100 mask = ~(LOG_TO_FBA_NUM(1) - 1);
3107 3101 maxbit = FBA_TO_LOG_NUM(size - 1);
3108 3102
3109 3103 /*
3110 3104 * as this while loop can also move data, it is counted as a
3111 3105 * sync loop thread
3112 3106 */
3113 3107 rdc_group_enter(krdc);
3114 3108 rdc_clr_flags(urdc, RDC_LOGGING);
3115 3109 rdc_set_flags(urdc, RDC_SYNCING);
3116 3110 krdc->group->synccount++;
3117 3111 rdc_group_exit(krdc);
3118 3112 mutex_enter(&sync_info.lock);
3119 3113 sync_info.active_thr++;
3120 3114 /* LINTED */
3121 3115 RDC_AVAIL_THR_TUNE(sync_info);
3122 3116 mutex_exit(&sync_info.lock);
3123 3117
3124 3118 while (offset < size) {
3125 3119 rdc_group_enter(krdc);
3126 3120 ASSERT(krdc->aux_state & RDC_AUXSYNCIP);
3127 3121 if (krdc->disk_status == 1 || krdc->dcio_bitmap == NULL) {
3128 3122 rdc_group_exit(krdc);
3129 3123 if (krdc->disk_status == 1) {
3130 3124 DTRACE_PROBE(rdc_sync_loop_disk_status_err);
3131 3125 } else {
3132 3126 DTRACE_PROBE(rdc_sync_loop_dcio_bitmap_err);
3133 3127 }
3134 3128 goto failed; /* halt sync */
3135 3129 }
3136 3130 rdc_group_exit(krdc);
3137 3131
3138 3132 if (!(rdc_get_vflags(urdc) & RDC_FULL)) {
3139 3133 mutex_enter(&krdc->syncbitmutex);
3140 3134 krdc->syncbitpos = FBA_TO_LOG_NUM(offset);
3141 3135 len = 0;
3142 3136
3143 3137 /* skip unnecessary chunks */
3144 3138
3145 3139 while (krdc->syncbitpos <= maxbit &&
3146 3140 !RDC_BIT_ISSET(krdc, krdc->syncbitpos)) {
3147 3141 offset += LOG_TO_FBA_NUM(1);
3148 3142 krdc->syncbitpos++;
3149 3143 }
3150 3144
3151 3145 /* check for boundary */
3152 3146
3153 3147 if (offset >= size) {
3154 3148 mutex_exit(&krdc->syncbitmutex);
3155 3149 goto sync_done;
3156 3150 }
3157 3151
3158 3152 /* find maximal length we can transfer */
3159 3153
3160 3154 while (krdc->syncbitpos <= maxbit &&
3161 3155 RDC_BIT_ISSET(krdc, krdc->syncbitpos)) {
3162 3156 len += LOG_TO_FBA_NUM(1);
3163 3157 krdc->syncbitpos++;
3164 3158 /* we can only read maxfbas anyways */
3165 3159 if (len >= krdc->maxfbas)
3166 3160 break;
3167 3161 }
3168 3162
3169 3163 len = min(len, (size - offset));
3170 3164
3171 3165 } else {
3172 3166 len = size - offset;
3173 3167 }
3174 3168
3175 3169 /* truncate to the io provider limit */
3176 3170 ASSERT(krdc->maxfbas != 0);
3177 3171 len = min(len, krdc->maxfbas);
3178 3172
3179 3173 if (len > LOG_TO_FBA_NUM(1)) {
3180 3174 /*
3181 3175 * If the update is larger than a bitmap chunk,
3182 3176 * then truncate to a whole number of bitmap
3183 3177 * chunks.
3184 3178 *
3185 3179 * If the update is smaller than a bitmap
3186 3180 * chunk, this must be the last write.
3187 3181 */
3188 3182 len &= mask;
3189 3183 }
3190 3184
3191 3185 if (!(rdc_get_vflags(urdc) & RDC_FULL)) {
3192 3186 krdc->syncbitpos = FBA_TO_LOG_NUM(offset + len);
3193 3187 mutex_exit(&krdc->syncbitmutex);
3194 3188 }
3195 3189
3196 3190 /*
3197 3191 * Find out if we can reserve a thread here ...
3198 3192 * note: skip the mutex for the first check, if the number
3199 3193 * is up there, why bother even grabbing the mutex to
3200 3194 * only realize that we can't have a thread anyways
3201 3195 */
3202 3196
3203 3197 if (mtsync && sync_info.active_thr < RDC_MAX_SYNC_THREADS) {
3204 3198
3205 3199 mutex_enter(&sync_info.lock);
3206 3200 if (sync_info.avail_thr >= 1) {
3207 3201 if (sync_status == NULL) {
3208 3202 ss = sync_status =
3209 3203 _rdc_new_sync_status();
3210 3204 } else {
3211 3205 ss = ss->next = _rdc_new_sync_status();
3212 3206 }
3213 3207 if (ss == NULL) {
3214 3208 mutex_exit(&sync_info.lock);
3215 3209 #ifdef DEBUG
3216 3210 cmn_err(CE_WARN, "!rdc_sync: can't "
3217 3211 "allocate status for mt sync");
3218 3212 #endif
3219 3213 goto retry;
3220 3214 }
3221 3215 /*
3222 3216 * syncinfo protected by sync_info lock but
3223 3217 * not part of the sync_info structure
3224 3218 * be careful if moving
3225 3219 */
3226 3220 if (_rdc_setup_syncthr(&syncinfo,
3227 3221 offset, len, krdc, ss) < 0) {
3228 3222 _rdc_free_sync_status(ss);
3229 3223 }
3230 3224
3231 3225 trc = nst_create(sync_info.rdc_syncset,
3232 3226 _rdc_sync_thread, syncinfo, NST_SLEEP);
3233 3227
3234 3228 if (trc == NULL) {
3235 3229 mutex_exit(&sync_info.lock);
3236 3230 #ifdef DEBUG
3237 3231 cmn_err(CE_NOTE, "!rdc_sync: unable to "
3238 3232 "mt sync");
3239 3233 #endif
3240 3234 _rdc_free_sync_status(ss);
3241 3235 kmem_free(syncinfo, sizeof (*syncinfo));
3242 3236 syncinfo = NULL;
3243 3237 goto retry;
3244 3238 } else {
3245 3239 mutex_enter(&sync->lock);
3246 3240 sync->threads++;
3247 3241 mutex_exit(&sync->lock);
3248 3242 }
3249 3243
3250 3244 sync_info.active_thr++;
3251 3245 /* LINTED */
3252 3246 RDC_AVAIL_THR_TUNE(sync_info);
3253 3247
3254 3248 mutex_exit(&sync_info.lock);
3255 3249 goto threaded;
3256 3250 }
3257 3251 mutex_exit(&sync_info.lock);
3258 3252 }
3259 3253 retry:
3260 3254 handle = alloc_h;
3261 3255 DTRACE_PROBE(rdc_sync_loop_allocbuf_start);
3262 3256 if (rdc_get_vflags(urdc) & RDC_SLAVE)
3263 3257 sts = nsc_alloc_buf(RDC_U_FD(krdc), offset, len,
3264 3258 NSC_WRITE | NSC_WRTHRU | NSC_NOCACHE, &handle);
3265 3259 else
3266 3260 sts = nsc_alloc_buf(RDC_U_FD(krdc), offset, len,
3267 3261 NSC_READ | NSC_NOCACHE, &handle);
3268 3262
3269 3263 DTRACE_PROBE(rdc_sync_loop_allocbuf_end);
3270 3264 if (sts > 0) {
3271 3265 if (handle && handle != alloc_h) {
3272 3266 (void) nsc_free_buf(handle);
3273 3267 }
3274 3268
3275 3269 handle = NULL;
3276 3270 DTRACE_PROBE(rdc_sync_loop_allocbuf_err);
3277 3271 goto failed;
3278 3272 }
3279 3273
3280 3274 if (rdc_get_vflags(urdc) & RDC_SLAVE) {
3281 3275 /* overwrite buffer with remote data */
3282 3276 sts = rdc_net_read(krdc->index, krdc->remote_index,
3283 3277 handle, handle->sb_pos, handle->sb_len);
3284 3278
3285 3279 if (!RDC_SUCCESS(sts)) {
3286 3280 #ifdef DEBUG
3287 3281 cmn_err(CE_WARN,
3288 3282 "!rdc sync: remote read failed (%d)", sts);
3289 3283 #endif
3290 3284 DTRACE_PROBE(rdc_sync_loop_remote_read_err);
3291 3285 goto failed;
3292 3286 }
3293 3287 if (!(rdc_get_vflags(urdc) & RDC_FULL))
3294 3288 rdc_set_bitmap_many(krdc, handle->sb_pos,
3295 3289 handle->sb_len);
3296 3290
3297 3291 /* commit locally */
3298 3292
3299 3293 sts = nsc_write(handle, handle->sb_pos,
3300 3294 handle->sb_len, 0);
3301 3295
3302 3296 if (!RDC_SUCCESS(sts)) {
3303 3297 /* reverse sync needed already set */
3304 3298 rdc_many_enter(krdc);
3305 3299 rdc_set_flags_log(urdc, RDC_VOL_FAILED,
3306 3300 "write failed during sync");
3307 3301 rdc_many_exit(krdc);
3308 3302 rdc_write_state(urdc);
3309 3303 DTRACE_PROBE(rdc_sync_loop_nsc_write_err);
3310 3304 goto failed;
3311 3305 }
3312 3306 } else {
3313 3307 /* send local data to remote */
3314 3308 DTRACE_PROBE2(rdc_sync_loop_netwrite_start,
3315 3309 int, krdc->index, nsc_buf_t *, handle);
3316 3310
3317 3311 if ((sts = rdc_net_write(krdc->index,
3318 3312 krdc->remote_index, handle, handle->sb_pos,
3319 3313 handle->sb_len, RDC_NOSEQ, RDC_NOQUE, NULL)) > 0) {
3320 3314
3321 3315 /*
3322 3316 * The following is to handle
3323 3317 * the case where the secondary side
3324 3318 * has thrown our buffer handle token away in a
3325 3319 * attempt to preserve its health on restart
3326 3320 */
3327 3321 if ((sts == EPROTO) && (tries < 3)) {
3328 3322 (void) nsc_free_buf(handle);
3329 3323 handle = NULL;
3330 3324 tries++;
3331 3325 delay(HZ >> 2);
3332 3326 goto retry;
3333 3327 }
3334 3328 #ifdef DEBUG
3335 3329 cmn_err(CE_WARN,
3336 3330 "!rdc sync: remote write failed (%d) 0x%x",
3337 3331 sts, rdc_get_vflags(urdc));
3338 3332 #endif
3339 3333 DTRACE_PROBE(rdc_sync_loop_netwrite_err);
3340 3334 goto failed;
3341 3335 }
3342 3336 DTRACE_PROBE(rdc_sync_loop_netwrite_end);
3343 3337 }
3344 3338
3345 3339 (void) nsc_free_buf(handle);
3346 3340 handle = NULL;
3347 3341
3348 3342 if (krdc->dcio_bitmap == NULL) {
3349 3343 #ifdef DEBUG
3350 3344 cmn_err(CE_NOTE, "!_rdc_sync: NULL bitmap");
3351 3345 #else
3352 3346 ;
3353 3347 /*EMPTY*/
3354 3348 #endif
3355 3349 } else {
3356 3350
3357 3351 RDC_SET_BITMASK(offset, len, &bitmask);
3358 3352 RDC_CLR_BITMAP(krdc, offset, len, bitmask, \
3359 3353 RDC_BIT_FORCE);
3360 3354 ASSERT(!IS_ASYNC(urdc));
3361 3355 }
3362 3356
3363 3357 /*
3364 3358 * Only release/reserve if someone is waiting
3365 3359 */
3366 3360 if (krdc->devices->id_release || nsc_waiting(RDC_U_FD(krdc))) {
3367 3361 DTRACE_PROBE(rdc_sync_loop_rlse_start);
3368 3362 if (alloc_h) {
3369 3363 (void) nsc_free_handle(alloc_h);
3370 3364 alloc_h = NULL;
3371 3365 }
3372 3366
3373 3367 _rdc_rlse_devs(krdc, rtype);
3374 3368 reserved = 0;
3375 3369 delay(2);
3376 3370
3377 3371 rtype = RDC_RAW;
3378 3372 sts = _rdc_rsrv_devs(krdc, rtype, RDC_INTERNAL);
3379 3373 if (sts != 0) {
3380 3374 handle = NULL;
3381 3375 DTRACE_PROBE(rdc_sync_loop_rdc_rsrv_err);
3382 3376 goto failed;
3383 3377 }
3384 3378
3385 3379 reserved = 1;
3386 3380
3387 3381 if (rdc_prealloc_handle) {
3388 3382 alloc_h = nsc_alloc_handle(RDC_U_FD(krdc),
3389 3383 NULL, NULL, NULL);
3390 3384 #ifdef DEBUG
3391 3385 if (!alloc_h) {
3392 3386 cmn_err(CE_WARN, "!rdc_sync: "
3393 3387 "failed to pre-alloc handle");
3394 3388 }
3395 3389 #endif
3396 3390 }
3397 3391 DTRACE_PROBE(rdc_sync_loop_rlse_end);
3398 3392 }
3399 3393 threaded:
3400 3394 offset += len;
3401 3395 urdc->sync_pos = offset;
3402 3396 }
3403 3397
3404 3398 sync_done:
3405 3399 sync_completed = 1;
3406 3400
3407 3401 failed:
3408 3402 krdc->group->synccount--;
3409 3403 failed_noincr:
3410 3404 mutex_enter(&sync->lock);
3411 3405 while (sync->complete != sync->threads) {
3412 3406 cv_wait(&sync->cv, &sync->lock);
3413 3407 }
3414 3408 sync->complete = 0;
3415 3409 sync->threads = 0;
3416 3410 mutex_exit(&sync->lock);
3417 3411
3418 3412 /*
3419 3413 * if sync_completed is 0 here,
3420 3414 * we know that the main sync thread failed anyway
3421 3415 * so just free the statuses and fail
3422 3416 */
3423 3417 if (sync_completed && (_rdc_sync_status_ok(sync_status, &rc) < 0)) {
3424 3418 urdc->sync_pos = rc;
3425 3419 sync_completed = 0; /* at least 1 thread failed */
3426 3420 }
3427 3421
3428 3422 _rdc_free_sync_status(sync_status);
3429 3423
3430 3424 /*
3431 3425 * we didn't increment, we didn't even sync,
3432 3426 * so don't dec sync_info.active_thr
3433 3427 */
3434 3428 if (!queuing) {
3435 3429 mutex_enter(&sync_info.lock);
3436 3430 sync_info.active_thr--;
3437 3431 /* LINTED */
3438 3432 RDC_AVAIL_THR_TUNE(sync_info);
3439 3433 mutex_exit(&sync_info.lock);
3440 3434 }
3441 3435
3442 3436 if (handle) {
3443 3437 (void) nsc_free_buf(handle);
3444 3438 }
3445 3439
3446 3440 if (alloc_h) {
3447 3441 (void) nsc_free_handle(alloc_h);
3448 3442 }
3449 3443
3450 3444 if (reserved) {
3451 3445 _rdc_rlse_devs(krdc, rtype);
3452 3446 }
3453 3447
3454 3448 notstarted:
3455 3449 rdc_group_enter(krdc);
3456 3450 ASSERT(krdc->aux_state & RDC_AUXSYNCIP);
3457 3451 if (IS_STATE(urdc, RDC_QUEUING))
3458 3452 rdc_clr_flags(urdc, RDC_QUEUING);
3459 3453
3460 3454 if (sync_completed) {
3461 3455 (void) rdc_net_state(krdc->index, CCIO_DONE);
3462 3456 } else {
3463 3457 (void) rdc_net_state(krdc->index, CCIO_ENABLELOG);
3464 3458 }
3465 3459
3466 3460 rdc_clr_flags(urdc, RDC_SYNCING);
3467 3461 if (rdc_get_vflags(urdc) & RDC_SLAVE) {
3468 3462 rdc_many_enter(krdc);
3469 3463 rdc_clr_mflags(urdc, RDC_SLAVE);
3470 3464 rdc_many_exit(krdc);
3471 3465 }
3472 3466 if (krdc->type_flag & RDC_ASYNCMODE)
3473 3467 rdc_set_flags(urdc, RDC_ASYNC);
3474 3468 if (sync_completed) {
3475 3469 rdc_many_enter(krdc);
3476 3470 rdc_clr_mflags(urdc, RDC_RSYNC_NEEDED);
3477 3471 rdc_many_exit(krdc);
3478 3472 } else {
3479 3473 krdc->remote_index = -1;
3480 3474 rdc_set_flags_log(urdc, RDC_LOGGING, "sync failed to complete");
3481 3475 }
3482 3476 rdc_group_exit(krdc);
3483 3477 rdc_write_state(urdc);
3484 3478
3485 3479 mutex_enter(&net_blk_lock);
3486 3480 if (sync_completed)
3487 3481 krdc->sync_done = RDC_COMPLETED;
3488 3482 else
3489 3483 krdc->sync_done = RDC_FAILED;
3490 3484 cv_broadcast(&krdc->synccv);
3491 3485 mutex_exit(&net_blk_lock);
3492 3486
3493 3487 }
3494 3488
3495 3489
3496 3490 static int
3497 3491 rdc_sync(rdc_config_t *uparms, spcs_s_info_t kstatus)
3498 3492 {
3499 3493 rdc_set_t *rdc_set = uparms->rdc_set;
3500 3494 int options = uparms->options;
3501 3495 int rc = 0;
3502 3496 int busy = 0;
3503 3497 int index;
3504 3498 rdc_k_info_t *krdc;
3505 3499 rdc_u_info_t *urdc;
3506 3500 rdc_k_info_t *kmulti;
3507 3501 rdc_u_info_t *umulti;
3508 3502 rdc_group_t *group;
3509 3503 rdc_srv_t *svp;
3510 3504 int sm, um, md;
3511 3505 int sync_completed = 0;
3512 3506 int thrcount;
3513 3507
3514 3508 mutex_enter(&rdc_conf_lock);
3515 3509 index = rdc_lookup_byname(rdc_set);
3516 3510 if (index >= 0)
3517 3511 krdc = &rdc_k_info[index];
3518 3512 if (index < 0 || (krdc->type_flag & RDC_DISABLEPEND)) {
3519 3513 mutex_exit(&rdc_conf_lock);
3520 3514 spcs_s_add(kstatus, RDC_EALREADY, rdc_set->primary.file,
3521 3515 rdc_set->secondary.file);
3522 3516 rc = RDC_EALREADY;
3523 3517 goto notstarted;
3524 3518 }
3525 3519
3526 3520 urdc = &rdc_u_info[index];
3527 3521 group = krdc->group;
3528 3522 set_busy(krdc);
3529 3523 busy = 1;
3530 3524 if ((krdc->type_flag == 0) || (krdc->type_flag & RDC_DISABLEPEND)) {
3531 3525 /* A resume or enable failed or we raced with a teardown */
3532 3526 mutex_exit(&rdc_conf_lock);
3533 3527 spcs_s_add(kstatus, RDC_EALREADY, rdc_set->primary.file,
3534 3528 rdc_set->secondary.file);
3535 3529 rc = RDC_EALREADY;
3536 3530 goto notstarted;
3537 3531 }
3538 3532 mutex_exit(&rdc_conf_lock);
3539 3533 rdc_group_enter(krdc);
3540 3534
3541 3535 if (!IS_STATE(urdc, RDC_LOGGING)) {
3542 3536 spcs_s_add(kstatus, RDC_ESETNOTLOGGING, urdc->secondary.intf,
3543 3537 urdc->secondary.file);
3544 3538 rc = RDC_ENOTLOGGING;
3545 3539 goto notstarted_unlock;
3546 3540 }
3547 3541
3548 3542 if (rdc_check(krdc, rdc_set)) {
3549 3543 spcs_s_add(kstatus, RDC_EALREADY, rdc_set->primary.file,
3550 3544 rdc_set->secondary.file);
3551 3545 rc = RDC_EALREADY;
3552 3546 goto notstarted_unlock;
3553 3547 }
3554 3548
3555 3549 if (!(rdc_get_vflags(urdc) & RDC_PRIMARY)) {
3556 3550 spcs_s_add(kstatus, RDC_ENOTPRIMARY, rdc_set->primary.intf,
3557 3551 rdc_set->primary.file, rdc_set->secondary.intf,
3558 3552 rdc_set->secondary.file);
3559 3553 rc = RDC_ENOTPRIMARY;
3560 3554 goto notstarted_unlock;
3561 3555 }
3562 3556
3563 3557 if ((options & RDC_OPT_REVERSE) && (IS_STATE(urdc, RDC_QUEUING))) {
3564 3558 /*
3565 3559 * cannot reverse sync when queuing, need to go logging first
3566 3560 */
3567 3561 spcs_s_add(kstatus, RDC_EQNORSYNC, rdc_set->primary.intf,
3568 3562 rdc_set->primary.file, rdc_set->secondary.intf,
3569 3563 rdc_set->secondary.file);
3570 3564 rc = RDC_EQNORSYNC;
3571 3565 goto notstarted_unlock;
3572 3566 }
3573 3567
3574 3568 svp = krdc->lsrv;
3575 3569 krdc->intf = rdc_add_to_if(svp, &(urdc->primary.addr),
3576 3570 &(urdc->secondary.addr), 1);
3577 3571
3578 3572 if (!krdc->intf) {
3579 3573 spcs_s_add(kstatus, RDC_EADDTOIF, urdc->primary.intf,
3580 3574 urdc->secondary.intf);
3581 3575 rc = RDC_EADDTOIF;
3582 3576 goto notstarted_unlock;
3583 3577 }
3584 3578
3585 3579 if (urdc->volume_size == 0) {
3586 3580 /* Implies reserve failed when previous resume was done */
3587 3581 rdc_get_details(krdc);
3588 3582 }
3589 3583 if (urdc->volume_size == 0) {
3590 3584 spcs_s_add(kstatus, RDC_ENOBMAP);
3591 3585 rc = RDC_ENOBMAP;
3592 3586 goto notstarted_unlock;
3593 3587 }
3594 3588
3595 3589 if (krdc->dcio_bitmap == NULL) {
3596 3590 if (rdc_resume_bitmap(krdc) < 0) {
3597 3591 spcs_s_add(kstatus, RDC_ENOBMAP);
3598 3592 rc = RDC_ENOBMAP;
3599 3593 goto notstarted_unlock;
3600 3594 }
3601 3595 }
3602 3596
3603 3597 if ((rdc_get_vflags(urdc) & RDC_BMP_FAILED) && (krdc->bitmapfd)) {
3604 3598 if (rdc_reset_bitmap(krdc)) {
3605 3599 spcs_s_add(kstatus, RDC_EBITMAP);
3606 3600 rc = RDC_EBITMAP;
3607 3601 goto notstarted_unlock;
3608 3602 }
3609 3603 }
3610 3604
3611 3605 if (IS_MANY(krdc) || IS_MULTI(krdc)) {
3612 3606 rdc_u_info_t *ubad;
3613 3607
3614 3608 if ((ubad = rdc_allow_pri_sync(urdc, options)) != NULL) {
3615 3609 spcs_s_add(kstatus, RDC_ESTATE,
3616 3610 ubad->primary.intf, ubad->primary.file,
3617 3611 ubad->secondary.intf, ubad->secondary.file);
3618 3612 rc = RDC_ESTATE;
3619 3613 goto notstarted_unlock;
3620 3614 }
3621 3615 }
3622 3616
3623 3617 /*
3624 3618 * there is a small window where _rdc_sync is still
3625 3619 * running, but has cleared the RDC_SYNCING flag.
3626 3620 * Use aux_state which is only cleared
3627 3621 * after _rdc_sync had done its 'death' broadcast.
3628 3622 */
3629 3623 if (krdc->aux_state & RDC_AUXSYNCIP) {
3630 3624 #ifdef DEBUG
3631 3625 if (!rdc_get_vflags(urdc) & RDC_SYNCING) {
3632 3626 cmn_err(CE_WARN, "!rdc_sync: "
3633 3627 "RDC_AUXSYNCIP set, SYNCING off");
3634 3628 }
3635 3629 #endif
3636 3630 spcs_s_add(kstatus, RDC_ESYNCING, rdc_set->primary.file);
3637 3631 rc = RDC_ESYNCING;
3638 3632 goto notstarted_unlock;
3639 3633 }
3640 3634 if (krdc->disk_status == 1) {
3641 3635 spcs_s_add(kstatus, RDC_ESYNCING, rdc_set->primary.file);
3642 3636 rc = RDC_ESYNCING;
3643 3637 goto notstarted_unlock;
3644 3638 }
3645 3639
3646 3640 if ((options & RDC_OPT_FORWARD) &&
3647 3641 (rdc_get_mflags(urdc) & RDC_RSYNC_NEEDED)) {
3648 3642 /* cannot forward sync if a reverse sync is needed */
3649 3643 spcs_s_add(kstatus, RDC_ERSYNCNEEDED, rdc_set->primary.intf,
3650 3644 rdc_set->primary.file, rdc_set->secondary.intf,
3651 3645 rdc_set->secondary.file);
3652 3646 rc = RDC_ERSYNCNEEDED;
3653 3647 goto notstarted_unlock;
3654 3648 }
3655 3649
3656 3650 urdc->sync_pos = 0;
3657 3651
3658 3652 /* Check if the rdc set is accessible on the remote node */
3659 3653 if (rdc_net_getstate(krdc, &sm, &um, &md, FALSE) < 0) {
3660 3654 /*
3661 3655 * Remote end may be inaccessible, or the rdc set is not
3662 3656 * enabled at the remote end.
3663 3657 */
3664 3658 spcs_s_add(kstatus, RDC_ECONNOPEN, urdc->secondary.intf,
3665 3659 urdc->secondary.file);
3666 3660 rc = RDC_ECONNOPEN;
3667 3661 goto notstarted_unlock;
3668 3662 }
3669 3663 if (options & RDC_OPT_REVERSE)
3670 3664 krdc->remote_index = rdc_net_state(index, CCIO_RSYNC);
3671 3665 else
3672 3666 krdc->remote_index = rdc_net_state(index, CCIO_SLAVE);
3673 3667 if (krdc->remote_index < 0) {
3674 3668 /*
3675 3669 * Remote note probably not in a valid state to be synced,
3676 3670 * as the state was fetched OK above.
3677 3671 */
3678 3672 spcs_s_add(kstatus, RDC_ERSTATE, urdc->secondary.intf,
3679 3673 urdc->secondary.file, urdc->primary.intf,
3680 3674 urdc->primary.file);
3681 3675 rc = RDC_ERSTATE;
3682 3676 goto notstarted_unlock;
3683 3677 }
3684 3678
3685 3679 rc = check_filesize(index, kstatus);
3686 3680 if (rc != 0) {
3687 3681 (void) rdc_net_state(krdc->index, CCIO_ENABLELOG);
3688 3682 goto notstarted_unlock;
3689 3683 }
3690 3684
3691 3685 krdc->sync_done = 0;
3692 3686
3693 3687 mutex_enter(&krdc->bmapmutex);
3694 3688 krdc->aux_state |= RDC_AUXSYNCIP;
3695 3689 mutex_exit(&krdc->bmapmutex);
3696 3690
3697 3691 if (options & RDC_OPT_REVERSE) {
3698 3692 rdc_many_enter(krdc);
3699 3693 rdc_set_mflags(urdc, RDC_SLAVE | RDC_RSYNC_NEEDED);
3700 3694 mutex_enter(&krdc->bmapmutex);
3701 3695 rdc_clr_flags(urdc, RDC_VOL_FAILED);
3702 3696 mutex_exit(&krdc->bmapmutex);
3703 3697 rdc_write_state(urdc);
3704 3698 /* LINTED */
3705 3699 if (kmulti = krdc->multi_next) {
3706 3700 umulti = &rdc_u_info[kmulti->index];
3707 3701 if (IS_ENABLED(umulti) && (rdc_get_vflags(umulti) &
3708 3702 (RDC_VOL_FAILED | RDC_SYNC_NEEDED))) {
3709 3703 rdc_clr_flags(umulti, RDC_SYNC_NEEDED);
3710 3704 rdc_clr_flags(umulti, RDC_VOL_FAILED);
3711 3705 rdc_write_state(umulti);
3712 3706 }
3713 3707 }
3714 3708 rdc_many_exit(krdc);
3715 3709 } else {
3716 3710 rdc_clr_flags(urdc, RDC_FCAL_FAILED);
3717 3711 rdc_write_state(urdc);
3718 3712 }
3719 3713
3720 3714 if (options & RDC_OPT_UPDATE) {
3721 3715 ASSERT(urdc->volume_size != 0);
3722 3716 if (rdc_net_getbmap(index,
3723 3717 BMAP_LOG_BYTES(urdc->volume_size)) > 0) {
3724 3718 spcs_s_add(kstatus, RDC_ENOBMAP);
3725 3719 rc = RDC_ENOBMAP;
3726 3720
3727 3721 (void) rdc_net_state(index, CCIO_ENABLELOG);
3728 3722
3729 3723 rdc_clr_flags(urdc, RDC_SYNCING);
3730 3724 if (options & RDC_OPT_REVERSE) {
3731 3725 rdc_many_enter(krdc);
3732 3726 rdc_clr_mflags(urdc, RDC_SLAVE);
3733 3727 rdc_many_exit(krdc);
3734 3728 }
3735 3729 if (krdc->type_flag & RDC_ASYNCMODE)
3736 3730 rdc_set_flags(urdc, RDC_ASYNC);
3737 3731 krdc->remote_index = -1;
3738 3732 rdc_set_flags_log(urdc, RDC_LOGGING,
3739 3733 "failed to read remote bitmap");
3740 3734 rdc_write_state(urdc);
3741 3735 goto failed;
3742 3736 }
3743 3737 rdc_clr_flags(urdc, RDC_FULL);
3744 3738 } else {
3745 3739 /*
3746 3740 * This is a full sync (not an update sync), mark the
3747 3741 * entire bitmap dirty
3748 3742 */
3749 3743 (void) RDC_FILL_BITMAP(krdc, FALSE);
3750 3744
3751 3745 rdc_set_flags(urdc, RDC_FULL);
3752 3746 }
3753 3747
3754 3748 rdc_group_exit(krdc);
3755 3749
3756 3750 /*
3757 3751 * allow diskq->memq flusher to wake up
3758 3752 */
3759 3753 mutex_enter(&krdc->group->ra_queue.net_qlock);
3760 3754 krdc->group->ra_queue.qfflags &= ~RDC_QFILLSLEEP;
3761 3755 mutex_exit(&krdc->group->ra_queue.net_qlock);
3762 3756
3763 3757 /*
3764 3758 * if this is a full sync on a non-diskq set or
3765 3759 * a diskq set that has failed, clear the async flag
3766 3760 */
3767 3761 if (krdc->type_flag & RDC_ASYNCMODE) {
3768 3762 if ((!(options & RDC_OPT_UPDATE)) ||
3769 3763 (!RDC_IS_DISKQ(krdc->group)) ||
3770 3764 (!(IS_STATE(urdc, RDC_QUEUING)))) {
3771 3765 /* full syncs, or core queue are synchronous */
3772 3766 rdc_group_enter(krdc);
3773 3767 rdc_clr_flags(urdc, RDC_ASYNC);
3774 3768 rdc_group_exit(krdc);
3775 3769 }
3776 3770
3777 3771 /*
3778 3772 * if the queue failed because it was full, lets see
3779 3773 * if we can restart it. After _rdc_sync() is done
3780 3774 * the modes will switch and we will begin disk
3781 3775 * queuing again. NOTE: this should only be called
3782 3776 * once per group, as it clears state for all group
3783 3777 * members, also clears the async flag for all members
3784 3778 */
3785 3779 if (IS_STATE(urdc, RDC_DISKQ_FAILED)) {
3786 3780 rdc_unfail_diskq(krdc);
3787 3781 } else {
3788 3782 /* don't add insult to injury by flushing a dead queue */
3789 3783
3790 3784 /*
3791 3785 * if we are updating, and a diskq and
3792 3786 * the async thread isn't active, start
3793 3787 * it up.
3794 3788 */
3795 3789 if ((options & RDC_OPT_UPDATE) &&
3796 3790 (IS_STATE(urdc, RDC_QUEUING))) {
3797 3791 rdc_group_enter(krdc);
3798 3792 rdc_clr_flags(urdc, RDC_SYNCING);
3799 3793 rdc_group_exit(krdc);
3800 3794 mutex_enter(&krdc->group->ra_queue.net_qlock);
3801 3795 if (krdc->group->ra_queue.qfill_sleeping ==
3802 3796 RDC_QFILL_ASLEEP)
3803 3797 cv_broadcast(&group->ra_queue.qfcv);
3804 3798 mutex_exit(&krdc->group->ra_queue.net_qlock);
3805 3799 thrcount = urdc->asyncthr;
3806 3800 while ((thrcount-- > 0) &&
3807 3801 !krdc->group->rdc_writer) {
3808 3802 (void) rdc_writer(krdc->index);
3809 3803 }
3810 3804 }
3811 3805 }
3812 3806 }
3813 3807
3814 3808 /*
3815 3809 * For a reverse sync, merge the current bitmap with all other sets
3816 3810 * that share this volume.
3817 3811 */
3818 3812 if (options & RDC_OPT_REVERSE) {
3819 3813 retry_many:
3820 3814 rdc_many_enter(krdc);
3821 3815 if (IS_MANY(krdc)) {
3822 3816 rdc_k_info_t *kmany;
3823 3817 rdc_u_info_t *umany;
3824 3818
3825 3819 for (kmany = krdc->many_next; kmany != krdc;
3826 3820 kmany = kmany->many_next) {
3827 3821 umany = &rdc_u_info[kmany->index];
3828 3822 if (!IS_ENABLED(umany))
3829 3823 continue;
3830 3824 ASSERT(umany->flags & RDC_PRIMARY);
3831 3825
3832 3826 if (!mutex_tryenter(&kmany->group->lock)) {
3833 3827 rdc_many_exit(krdc);
3834 3828 /* May merge more than once */
3835 3829 goto retry_many;
3836 3830 }
3837 3831 rdc_merge_bitmaps(krdc, kmany);
3838 3832 mutex_exit(&kmany->group->lock);
3839 3833 }
3840 3834 }
3841 3835 rdc_many_exit(krdc);
3842 3836
3843 3837 retry_multi:
3844 3838 rdc_many_enter(krdc);
3845 3839 if (IS_MULTI(krdc)) {
3846 3840 rdc_k_info_t *kmulti = krdc->multi_next;
3847 3841 rdc_u_info_t *umulti = &rdc_u_info[kmulti->index];
3848 3842
3849 3843 if (IS_ENABLED(umulti)) {
3850 3844 ASSERT(!(umulti->flags & RDC_PRIMARY));
3851 3845
3852 3846 if (!mutex_tryenter(&kmulti->group->lock)) {
3853 3847 rdc_many_exit(krdc);
3854 3848 goto retry_multi;
3855 3849 }
3856 3850 rdc_merge_bitmaps(krdc, kmulti);
3857 3851 mutex_exit(&kmulti->group->lock);
3858 3852 }
3859 3853 }
3860 3854 rdc_many_exit(krdc);
3861 3855 }
3862 3856
3863 3857 rdc_group_enter(krdc);
3864 3858
3865 3859 if (krdc->bitmap_write == 0) {
3866 3860 if (rdc_write_bitmap_fill(krdc) >= 0)
3867 3861 krdc->bitmap_write = -1;
3868 3862 }
3869 3863
3870 3864 if (krdc->bitmap_write > 0)
3871 3865 (void) rdc_write_bitmap(krdc);
3872 3866
3873 3867 urdc->bits_set = RDC_COUNT_BITMAP(krdc);
3874 3868
3875 3869 rdc_group_exit(krdc);
3876 3870
3877 3871 if (options & RDC_OPT_REVERSE) {
3878 3872 (void) _rdc_sync_event_notify(RDC_SYNC_START,
3879 3873 urdc->primary.file, urdc->group_name);
3880 3874 }
3881 3875
3882 3876 /* Now set off the sync itself */
3883 3877
3884 3878 mutex_enter(&net_blk_lock);
3885 3879 if (nsc_create_process(
3886 3880 (void (*)(void *))_rdc_sync, (void *)krdc, FALSE)) {
3887 3881 mutex_exit(&net_blk_lock);
3888 3882 spcs_s_add(kstatus, RDC_ENOPROC);
3889 3883 /*
3890 3884 * We used to just return here,
3891 3885 * but we need to clear the AUXSYNCIP bit
3892 3886 * and there is a very small chance that
3893 3887 * someone may be waiting on the disk_status flag.
3894 3888 */
3895 3889 rc = RDC_ENOPROC;
3896 3890 /*
3897 3891 * need the group lock held at failed.
3898 3892 */
3899 3893 rdc_group_enter(krdc);
3900 3894 goto failed;
3901 3895 }
3902 3896
3903 3897 mutex_enter(&rdc_conf_lock);
3904 3898 wakeup_busy(krdc);
3905 3899 busy = 0;
3906 3900 mutex_exit(&rdc_conf_lock);
3907 3901
3908 3902 while (krdc->sync_done == 0)
3909 3903 cv_wait(&krdc->synccv, &net_blk_lock);
3910 3904 mutex_exit(&net_blk_lock);
3911 3905
3912 3906 rdc_group_enter(krdc);
3913 3907
3914 3908 if (krdc->sync_done == RDC_FAILED) {
3915 3909 char siztmp1[16];
3916 3910 (void) spcs_s_inttostring(
3917 3911 urdc->sync_pos, siztmp1, sizeof (siztmp1),
3918 3912 0);
3919 3913 spcs_s_add(kstatus, RDC_EFAIL, siztmp1);
3920 3914 rc = RDC_EFAIL;
3921 3915 } else
3922 3916 sync_completed = 1;
3923 3917
3924 3918 failed:
3925 3919 /*
3926 3920 * We use this flag now to make halt_sync() wait for
3927 3921 * us to terminate and let us take the group lock.
3928 3922 */
3929 3923 krdc->aux_state &= ~RDC_AUXSYNCIP;
3930 3924 if (krdc->disk_status == 1) {
3931 3925 krdc->disk_status = 0;
3932 3926 cv_broadcast(&krdc->haltcv);
3933 3927 }
3934 3928
3935 3929 notstarted_unlock:
3936 3930 rdc_group_exit(krdc);
3937 3931
3938 3932 if (sync_completed && (options & RDC_OPT_REVERSE)) {
3939 3933 (void) _rdc_sync_event_notify(RDC_SYNC_DONE,
3940 3934 urdc->primary.file, urdc->group_name);
3941 3935 }
3942 3936
3943 3937 notstarted:
3944 3938 if (busy) {
3945 3939 mutex_enter(&rdc_conf_lock);
3946 3940 wakeup_busy(krdc);
3947 3941 mutex_exit(&rdc_conf_lock);
3948 3942 }
3949 3943
3950 3944 return (rc);
3951 3945 }
3952 3946
3953 3947 /* ARGSUSED */
3954 3948 static int
3955 3949 _rdc_suspend(rdc_k_info_t *krdc, rdc_set_t *rdc_set, spcs_s_info_t kstatus)
3956 3950 {
3957 3951 rdc_u_info_t *urdc = &rdc_u_info[krdc->index];
3958 3952 rdc_if_t *ip;
3959 3953 int index = krdc->index;
3960 3954
3961 3955 ASSERT(krdc->group != NULL);
3962 3956 rdc_group_enter(krdc);
3963 3957 #ifdef DEBUG
3964 3958 ASSERT(rdc_check(krdc, rdc_set) == 0);
3965 3959 #else
3966 3960 if (rdc_check(krdc, rdc_set)) {
3967 3961 rdc_group_exit(krdc);
3968 3962 spcs_s_add(kstatus, RDC_EALREADY, rdc_set->primary.file,
3969 3963 rdc_set->secondary.file);
3970 3964 return (RDC_EALREADY);
3971 3965 }
3972 3966 #endif
3973 3967
3974 3968 if (rdc_get_vflags(urdc) & RDC_PRIMARY) {
3975 3969 halt_sync(krdc);
3976 3970 ASSERT(IS_ENABLED(urdc));
3977 3971 }
3978 3972
3979 3973 rdc_group_exit(krdc);
3980 3974 (void) rdc_unintercept(krdc);
3981 3975
3982 3976 #ifdef DEBUG
3983 3977 cmn_err(CE_NOTE, "!SNDR: suspended %s %s", urdc->primary.file,
3984 3978 urdc->secondary.file);
3985 3979 #endif
3986 3980
3987 3981 /* Configured but not enabled */
3988 3982 ASSERT(IS_CONFIGURED(krdc) && !IS_ENABLED(urdc));
3989 3983
3990 3984
3991 3985 if (IS_ASYNC(urdc) && !RDC_IS_DISKQ(krdc->group)) {
3992 3986 int tries = 2; /* in case of possibly stuck flusher threads */
3993 3987 #ifdef DEBUG
3994 3988 net_queue *qp = &krdc->group->ra_queue;
3995 3989 #endif
3996 3990 do {
3997 3991 if (!krdc->group->rdc_writer)
3998 3992 (void) rdc_writer(krdc->index);
3999 3993
4000 3994 (void) rdc_drain_queue(krdc->index);
4001 3995
4002 3996 } while (krdc->group->rdc_writer && tries--);
4003 3997
4004 3998 /* ok, force it to happen... */
4005 3999 if (rdc_drain_queue(krdc->index) != 0) {
4006 4000 do {
4007 4001 mutex_enter(&krdc->group->ra_queue.net_qlock);
4008 4002 krdc->group->asyncdis = 1;
4009 4003 cv_broadcast(&krdc->group->asyncqcv);
4010 4004 mutex_exit(&krdc->group->ra_queue.net_qlock);
4011 4005 cmn_err(CE_WARN,
4012 4006 "!SNDR: async I/O pending and not flushed "
4013 4007 "for %s during suspend",
4014 4008 urdc->primary.file);
4015 4009 #ifdef DEBUG
4016 4010 cmn_err(CE_WARN,
4017 4011 "!nitems: %" NSC_SZFMT " nblocks: %"
4018 4012 NSC_SZFMT " head: 0x%p tail: 0x%p",
4019 4013 qp->nitems, qp->blocks,
4020 4014 (void *)qp->net_qhead,
4021 4015 (void *)qp->net_qtail);
4022 4016 #endif
4023 4017 } while (krdc->group->rdc_thrnum > 0);
4024 4018 }
4025 4019 }
4026 4020
4027 4021 mutex_enter(&rdc_conf_lock);
4028 4022 ip = krdc->intf;
4029 4023 krdc->intf = 0;
4030 4024
4031 4025 if (ip) {
4032 4026 rdc_remove_from_if(ip);
4033 4027 }
4034 4028
4035 4029 mutex_exit(&rdc_conf_lock);
4036 4030
4037 4031 rdc_group_enter(krdc);
4038 4032
4039 4033 /* Configured but not enabled */
4040 4034 ASSERT(IS_CONFIGURED(krdc) && !IS_ENABLED(urdc));
4041 4035
4042 4036 rdc_group_exit(krdc);
4043 4037 /* Must not hold group lock during this function */
4044 4038 while (rdc_dump_alloc_bufs_cd(krdc->index) == EAGAIN)
4045 4039 delay(2);
4046 4040 rdc_group_enter(krdc);
4047 4041
4048 4042 /* Don't rdc_clear_state, unlike _rdc_disable */
4049 4043
4050 4044 rdc_free_bitmap(krdc, RDC_CMD_SUSPEND);
4051 4045 rdc_close_bitmap(krdc);
4052 4046
4053 4047 rdc_dev_close(krdc);
4054 4048 rdc_close_direct(krdc);
4055 4049
4056 4050 /* Configured but not enabled */
4057 4051 ASSERT(IS_CONFIGURED(krdc) && !IS_ENABLED(urdc));
4058 4052
4059 4053 rdc_group_exit(krdc);
4060 4054
4061 4055 /*
4062 4056 * we should now unregister the queue, with no conflicting
4063 4057 * locks held. This is the last(only) member of the group
4064 4058 */
4065 4059 if (krdc->group && RDC_IS_DISKQ(krdc->group) &&
4066 4060 krdc->group->count == 1) { /* stop protecting queue */
4067 4061 rdc_unintercept_diskq(krdc->group);
4068 4062 }
4069 4063
4070 4064 mutex_enter(&rdc_conf_lock);
4071 4065
4072 4066 /* Configured but not enabled */
4073 4067 ASSERT(IS_CONFIGURED(krdc) && !IS_ENABLED(urdc));
4074 4068
4075 4069 wait_busy(krdc);
4076 4070
4077 4071 if (IS_MANY(krdc) || IS_MULTI(krdc))
4078 4072 remove_from_many(krdc);
4079 4073
4080 4074 remove_from_group(krdc);
4081 4075
4082 4076 krdc->remote_index = -1;
4083 4077 ASSERT(krdc->type_flag & RDC_CONFIGURED);
4084 4078 ASSERT(krdc->type_flag & RDC_DISABLEPEND);
4085 4079 krdc->type_flag = 0;
4086 4080 #ifdef DEBUG
4087 4081 if (krdc->dcio_bitmap)
4088 4082 cmn_err(CE_WARN, "!_rdc_suspend: possible mem leak, "
4089 4083 "dcio_bitmap");
4090 4084 #endif
4091 4085 krdc->dcio_bitmap = NULL;
4092 4086 krdc->bitmap_ref = NULL;
4093 4087 krdc->bitmap_size = 0;
4094 4088 krdc->maxfbas = 0;
4095 4089 krdc->bitmap_write = 0;
4096 4090 krdc->disk_status = 0;
4097 4091 rdc_destroy_svinfo(krdc->lsrv);
4098 4092 krdc->lsrv = NULL;
4099 4093 krdc->multi_next = NULL;
4100 4094
4101 4095 rdc_u_init(urdc);
4102 4096
4103 4097 mutex_exit(&rdc_conf_lock);
4104 4098 rdc_kstat_delete(index);
4105 4099 return (0);
4106 4100 }
4107 4101
4108 4102 static int
4109 4103 rdc_suspend(rdc_config_t *uparms, spcs_s_info_t kstatus)
4110 4104 {
4111 4105 rdc_k_info_t *krdc;
4112 4106 int index;
4113 4107 int rc;
4114 4108
4115 4109 mutex_enter(&rdc_conf_lock);
4116 4110
4117 4111 index = rdc_lookup_byname(uparms->rdc_set);
4118 4112 if (index >= 0)
4119 4113 krdc = &rdc_k_info[index];
4120 4114 if (index < 0 || (krdc->type_flag & RDC_DISABLEPEND)) {
4121 4115 mutex_exit(&rdc_conf_lock);
4122 4116 spcs_s_add(kstatus, RDC_EALREADY, uparms->rdc_set->primary.file,
4123 4117 uparms->rdc_set->secondary.file);
4124 4118 return (RDC_EALREADY);
4125 4119 }
4126 4120
4127 4121 krdc->type_flag |= RDC_DISABLEPEND;
4128 4122 wait_busy(krdc);
4129 4123 if (krdc->type_flag == 0) {
4130 4124 /* A resume or enable failed */
4131 4125 mutex_exit(&rdc_conf_lock);
4132 4126 spcs_s_add(kstatus, RDC_EALREADY, uparms->rdc_set->primary.file,
4133 4127 uparms->rdc_set->secondary.file);
4134 4128 return (RDC_EALREADY);
4135 4129 }
4136 4130 mutex_exit(&rdc_conf_lock);
4137 4131
4138 4132 rc = _rdc_suspend(krdc, uparms->rdc_set, kstatus);
4139 4133 return (rc);
4140 4134 }
4141 4135
4142 4136 static int
4143 4137 _rdc_resume(rdc_set_t *rdc_set, int options, spcs_s_info_t kstatus)
4144 4138 {
4145 4139 int index;
4146 4140 char *rhost;
4147 4141 struct netbuf *addrp;
4148 4142 rdc_k_info_t *krdc;
4149 4143 rdc_u_info_t *urdc;
4150 4144 rdc_srv_t *svp = NULL;
4151 4145 char *local_file;
4152 4146 char *local_bitmap;
4153 4147 int rc, rc1;
4154 4148 nsc_size_t maxfbas;
4155 4149 rdc_group_t *grp;
4156 4150
4157 4151 if ((rdc_set->primary.intf[0] == 0) ||
4158 4152 (rdc_set->primary.addr.len == 0) ||
4159 4153 (rdc_set->primary.file[0] == 0) ||
4160 4154 (rdc_set->primary.bitmap[0] == 0) ||
4161 4155 (rdc_set->secondary.intf[0] == 0) ||
4162 4156 (rdc_set->secondary.addr.len == 0) ||
4163 4157 (rdc_set->secondary.file[0] == 0) ||
4164 4158 (rdc_set->secondary.bitmap[0] == 0)) {
4165 4159 spcs_s_add(kstatus, RDC_EEMPTY);
4166 4160 return (RDC_EEMPTY);
4167 4161 }
4168 4162
4169 4163 /* Next check there aren't any enabled rdc sets which match. */
4170 4164
4171 4165 mutex_enter(&rdc_conf_lock);
4172 4166
4173 4167 if (rdc_lookup_byname(rdc_set) >= 0) {
4174 4168 mutex_exit(&rdc_conf_lock);
4175 4169 spcs_s_add(kstatus, RDC_EENABLED, rdc_set->primary.intf,
4176 4170 rdc_set->primary.file, rdc_set->secondary.intf,
4177 4171 rdc_set->secondary.file);
4178 4172 return (RDC_EENABLED);
4179 4173 }
4180 4174
4181 4175 if (rdc_lookup_many2one(rdc_set) >= 0) {
4182 4176 mutex_exit(&rdc_conf_lock);
4183 4177 spcs_s_add(kstatus, RDC_EMANY2ONE, rdc_set->primary.intf,
4184 4178 rdc_set->primary.file, rdc_set->secondary.intf,
4185 4179 rdc_set->secondary.file);
4186 4180 return (RDC_EMANY2ONE);
4187 4181 }
4188 4182
4189 4183 if (rdc_set->netconfig->knc_proto == NULL) {
4190 4184 mutex_exit(&rdc_conf_lock);
4191 4185 spcs_s_add(kstatus, RDC_ENETCONFIG);
4192 4186 return (RDC_ENETCONFIG);
4193 4187 }
4194 4188
4195 4189 if (rdc_set->primary.addr.len == 0) {
4196 4190 mutex_exit(&rdc_conf_lock);
4197 4191 spcs_s_add(kstatus, RDC_ENETBUF, rdc_set->primary.file);
4198 4192 return (RDC_ENETBUF);
4199 4193 }
4200 4194
4201 4195 if (rdc_set->secondary.addr.len == 0) {
4202 4196 mutex_exit(&rdc_conf_lock);
4203 4197 spcs_s_add(kstatus, RDC_ENETBUF, rdc_set->secondary.file);
4204 4198 return (RDC_ENETBUF);
4205 4199 }
4206 4200
4207 4201 /* Check that the local data volume isn't in use as a bitmap */
4208 4202 if (options & RDC_OPT_PRIMARY)
4209 4203 local_file = rdc_set->primary.file;
4210 4204 else
4211 4205 local_file = rdc_set->secondary.file;
4212 4206 if (rdc_lookup_bitmap(local_file) >= 0) {
4213 4207 mutex_exit(&rdc_conf_lock);
4214 4208 spcs_s_add(kstatus, RDC_EVOLINUSE, local_file);
4215 4209 return (RDC_EVOLINUSE);
4216 4210 }
4217 4211
4218 4212 /* check that the secondary data volume isn't in use */
4219 4213 if (!(options & RDC_OPT_PRIMARY)) {
4220 4214 local_file = rdc_set->secondary.file;
4221 4215 if (rdc_lookup_secondary(local_file) >= 0) {
4222 4216 mutex_exit(&rdc_conf_lock);
4223 4217 spcs_s_add(kstatus, RDC_EVOLINUSE, local_file);
4224 4218 return (RDC_EVOLINUSE);
4225 4219 }
4226 4220 }
4227 4221
4228 4222 /* Check that the bitmap isn't in use as a data volume */
4229 4223 if (options & RDC_OPT_PRIMARY)
4230 4224 local_bitmap = rdc_set->primary.bitmap;
4231 4225 else
4232 4226 local_bitmap = rdc_set->secondary.bitmap;
4233 4227 if (rdc_lookup_configured(local_bitmap) >= 0) {
4234 4228 mutex_exit(&rdc_conf_lock);
4235 4229 spcs_s_add(kstatus, RDC_EBMPINUSE, local_bitmap);
4236 4230 return (RDC_EBMPINUSE);
4237 4231 }
4238 4232
4239 4233 /* Check that the bitmap isn't already in use as a bitmap */
4240 4234 if (rdc_lookup_bitmap(local_bitmap) >= 0) {
4241 4235 mutex_exit(&rdc_conf_lock);
4242 4236 spcs_s_add(kstatus, RDC_EBMPINUSE, local_bitmap);
4243 4237 return (RDC_EBMPINUSE);
4244 4238 }
4245 4239
4246 4240 /* Set urdc->volume_size */
4247 4241 index = rdc_dev_open(rdc_set, options);
4248 4242 if (index < 0) {
4249 4243 mutex_exit(&rdc_conf_lock);
4250 4244 if (options & RDC_OPT_PRIMARY)
4251 4245 spcs_s_add(kstatus, RDC_EOPEN, rdc_set->primary.intf,
4252 4246 rdc_set->primary.file);
4253 4247 else
4254 4248 spcs_s_add(kstatus, RDC_EOPEN, rdc_set->secondary.intf,
4255 4249 rdc_set->secondary.file);
4256 4250 return (RDC_EOPEN);
4257 4251 }
4258 4252
4259 4253 urdc = &rdc_u_info[index];
4260 4254 krdc = &rdc_k_info[index];
4261 4255
4262 4256 /* copy relevant parts of rdc_set to urdc field by field */
4263 4257
4264 4258 (void) strncpy(urdc->primary.intf, rdc_set->primary.intf,
4265 4259 MAX_RDC_HOST_SIZE);
4266 4260 (void) strncpy(urdc->secondary.intf, rdc_set->secondary.intf,
4267 4261 MAX_RDC_HOST_SIZE);
4268 4262
4269 4263 (void) strncpy(urdc->group_name, rdc_set->group_name, NSC_MAXPATH);
4270 4264
4271 4265 dup_rdc_netbuf(&rdc_set->primary.addr, &urdc->primary.addr);
4272 4266 (void) strncpy(urdc->primary.file, rdc_set->primary.file, NSC_MAXPATH);
4273 4267 (void) strncpy(urdc->primary.bitmap, rdc_set->primary.bitmap,
4274 4268 NSC_MAXPATH);
4275 4269
4276 4270 dup_rdc_netbuf(&rdc_set->secondary.addr, &urdc->secondary.addr);
4277 4271 (void) strncpy(urdc->secondary.file, rdc_set->secondary.file,
4278 4272 NSC_MAXPATH);
4279 4273 (void) strncpy(urdc->secondary.bitmap, rdc_set->secondary.bitmap,
4280 4274 NSC_MAXPATH);
4281 4275 (void) strncpy(urdc->disk_queue, rdc_set->disk_queue, NSC_MAXPATH);
4282 4276 urdc->setid = rdc_set->setid;
4283 4277
4284 4278 if ((options & RDC_OPT_SYNC) && urdc->disk_queue[0]) {
4285 4279 mutex_exit(&rdc_conf_lock);
4286 4280 rdc_dev_close(krdc);
4287 4281 spcs_s_add(kstatus, RDC_EQWRONGMODE);
4288 4282 return (RDC_EQWRONGMODE);
4289 4283 }
4290 4284
4291 4285 /*
4292 4286 * init flags now so that state left by failures in add_to_group()
4293 4287 * are preserved.
4294 4288 */
4295 4289 rdc_init_flags(urdc);
4296 4290
4297 4291 if ((rc1 = add_to_group(krdc, options, RDC_CMD_RESUME)) != 0) {
4298 4292 if (rc1 == RDC_EQNOADD) { /* something went wrong with queue */
4299 4293 rdc_fail_diskq(krdc, RDC_WAIT, RDC_NOLOG);
4300 4294 /* don't return a failure here, continue with resume */
4301 4295
4302 4296 } else { /* some other group add failure */
4303 4297 mutex_exit(&rdc_conf_lock);
4304 4298 rdc_dev_close(krdc);
4305 4299 spcs_s_add(kstatus, RDC_EGROUP,
4306 4300 rdc_set->primary.intf, rdc_set->primary.file,
4307 4301 rdc_set->secondary.intf, rdc_set->secondary.file,
4308 4302 rdc_set->group_name);
4309 4303 return (RDC_EGROUP);
4310 4304 }
4311 4305 }
4312 4306
4313 4307 /*
4314 4308 * maxfbas was set in rdc_dev_open as primary's maxfbas.
4315 4309 * If diskq's maxfbas is smaller, then use diskq's.
4316 4310 */
4317 4311 grp = krdc->group;
4318 4312 if (grp && RDC_IS_DISKQ(grp) && (grp->diskqfd != 0)) {
4319 4313 rc = _rdc_rsrv_diskq(grp);
4320 4314 if (RDC_SUCCESS(rc)) {
4321 4315 rc = nsc_maxfbas(grp->diskqfd, 0, &maxfbas);
4322 4316 if (rc == 0) {
4323 4317 #ifdef DEBUG
4324 4318 if (krdc->maxfbas != maxfbas)
4325 4319 cmn_err(CE_NOTE,
4326 4320 "!_rdc_resume: diskq maxfbas = %"
4327 4321 NSC_SZFMT ", primary maxfbas = %"
4328 4322 NSC_SZFMT, maxfbas, krdc->maxfbas);
4329 4323 #endif
4330 4324 krdc->maxfbas = min(krdc->maxfbas,
4331 4325 maxfbas);
4332 4326 } else {
4333 4327 cmn_err(CE_WARN,
4334 4328 "!_rdc_resume: diskq maxfbas failed (%d)",
4335 4329 rc);
4336 4330 }
4337 4331 _rdc_rlse_diskq(grp);
4338 4332 } else {
4339 4333 cmn_err(CE_WARN,
4340 4334 "!_rdc_resume: diskq reserve failed (%d)", rc);
4341 4335 }
4342 4336 }
4343 4337
4344 4338 (void) strncpy(urdc->direct_file, rdc_set->direct_file, NSC_MAXPATH);
4345 4339 if ((options & RDC_OPT_PRIMARY) && rdc_set->direct_file[0]) {
4346 4340 if (rdc_open_direct(krdc) == NULL)
4347 4341 rdc_set_flags(urdc, RDC_FCAL_FAILED);
4348 4342 }
4349 4343
4350 4344 krdc->many_next = krdc;
4351 4345
4352 4346 ASSERT(krdc->type_flag == 0);
4353 4347 krdc->type_flag = RDC_CONFIGURED;
4354 4348
4355 4349 if (options & RDC_OPT_PRIMARY)
4356 4350 rdc_set_flags(urdc, RDC_PRIMARY);
4357 4351
4358 4352 if (options & RDC_OPT_ASYNC)
4359 4353 krdc->type_flag |= RDC_ASYNCMODE;
4360 4354
4361 4355 set_busy(krdc);
4362 4356
4363 4357 urdc->syshostid = rdc_set->syshostid;
4364 4358
4365 4359 if (add_to_many(krdc) < 0) {
4366 4360 mutex_exit(&rdc_conf_lock);
4367 4361
4368 4362 rdc_group_enter(krdc);
4369 4363
4370 4364 spcs_s_add(kstatus, RDC_EMULTI);
4371 4365 rc = RDC_EMULTI;
4372 4366 goto fail;
4373 4367 }
4374 4368
4375 4369 /* Configured but not enabled */
4376 4370 ASSERT(IS_CONFIGURED(krdc) && !IS_ENABLED(urdc));
4377 4371
4378 4372 mutex_exit(&rdc_conf_lock);
4379 4373
4380 4374 if (urdc->volume_size == 0) {
4381 4375 rdc_many_enter(krdc);
4382 4376 if (options & RDC_OPT_PRIMARY)
4383 4377 rdc_set_mflags(urdc, RDC_RSYNC_NEEDED);
4384 4378 else
4385 4379 rdc_set_flags(urdc, RDC_SYNC_NEEDED);
4386 4380 rdc_set_flags(urdc, RDC_VOL_FAILED);
4387 4381 rdc_many_exit(krdc);
4388 4382 }
4389 4383
4390 4384 rdc_group_enter(krdc);
4391 4385
4392 4386 /* Configured but not enabled */
4393 4387 ASSERT(IS_CONFIGURED(krdc) && !IS_ENABLED(urdc));
4394 4388
4395 4389 /*
4396 4390 * The rdc set is configured but not yet enabled. Other operations must
4397 4391 * ignore this set until it is enabled.
4398 4392 */
4399 4393
4400 4394 urdc->sync_pos = 0;
4401 4395
4402 4396 /* Set tunable defaults, we'll pick up tunables from the header later */
4403 4397
4404 4398 urdc->maxqfbas = rdc_maxthres_queue;
4405 4399 urdc->maxqitems = rdc_max_qitems;
4406 4400 urdc->autosync = 0;
4407 4401 urdc->asyncthr = rdc_asyncthr;
4408 4402
4409 4403 urdc->netconfig = rdc_set->netconfig;
4410 4404
4411 4405 if (options & RDC_OPT_PRIMARY) {
4412 4406 rhost = rdc_set->secondary.intf;
4413 4407 addrp = &rdc_set->secondary.addr;
4414 4408 } else {
4415 4409 rhost = rdc_set->primary.intf;
4416 4410 addrp = &rdc_set->primary.addr;
4417 4411 }
4418 4412
4419 4413 if (options & RDC_OPT_ASYNC)
4420 4414 rdc_set_flags(urdc, RDC_ASYNC);
4421 4415
4422 4416 svp = rdc_create_svinfo(rhost, addrp, urdc->netconfig);
4423 4417 if (svp == NULL) {
4424 4418 spcs_s_add(kstatus, ENOMEM);
4425 4419 rc = ENOMEM;
4426 4420 goto fail;
4427 4421 }
4428 4422
4429 4423 urdc->netconfig = NULL; /* This will be no good soon */
4430 4424
4431 4425 /* Don't set krdc->intf here */
4432 4426 rdc_kstat_create(index);
4433 4427
4434 4428 /* if the bitmap resume isn't clean, it will clear queuing flag */
4435 4429
4436 4430 (void) rdc_resume_bitmap(krdc);
4437 4431
4438 4432 if (RDC_IS_DISKQ(krdc->group)) {
4439 4433 disk_queue *q = &krdc->group->diskq;
4440 4434 if ((rc1 == RDC_EQNOADD) ||
4441 4435 IS_QSTATE(q, RDC_QBADRESUME)) {
4442 4436 rdc_clr_flags(urdc, RDC_QUEUING);
4443 4437 RDC_ZERO_BITREF(krdc);
4444 4438 }
4445 4439 }
4446 4440
4447 4441 if (krdc->lsrv == NULL)
4448 4442 krdc->lsrv = svp;
4449 4443 else {
4450 4444 #ifdef DEBUG
4451 4445 cmn_err(CE_WARN, "!_rdc_resume: krdc->lsrv already set: %p",
4452 4446 (void *) krdc->lsrv);
4453 4447 #endif
4454 4448 rdc_destroy_svinfo(svp);
4455 4449 }
4456 4450 svp = NULL;
4457 4451
4458 4452 /* Configured but not enabled */
4459 4453 ASSERT(IS_CONFIGURED(krdc) && !IS_ENABLED(urdc));
4460 4454
4461 4455 /* And finally */
4462 4456
4463 4457 krdc->remote_index = -1;
4464 4458
4465 4459 /* Should we set the whole group logging? */
4466 4460 rdc_set_flags(urdc, RDC_ENABLED | RDC_LOGGING);
4467 4461
4468 4462 rdc_group_exit(krdc);
4469 4463
4470 4464 if (rdc_intercept(krdc) != 0) {
4471 4465 rdc_group_enter(krdc);
4472 4466 rdc_clr_flags(urdc, RDC_ENABLED);
4473 4467 if (options & RDC_OPT_PRIMARY)
4474 4468 spcs_s_add(kstatus, RDC_EREGISTER, urdc->primary.file);
4475 4469 else
4476 4470 spcs_s_add(kstatus, RDC_EREGISTER,
4477 4471 urdc->secondary.file);
4478 4472 #ifdef DEBUG
4479 4473 cmn_err(CE_NOTE, "!nsc_register_path failed %s",
4480 4474 urdc->primary.file);
4481 4475 #endif
4482 4476 rc = RDC_EREGISTER;
4483 4477 goto bmpfail;
4484 4478 }
4485 4479 #ifdef DEBUG
4486 4480 cmn_err(CE_NOTE, "!SNDR: resumed %s %s", urdc->primary.file,
4487 4481 urdc->secondary.file);
4488 4482 #endif
4489 4483
4490 4484 rdc_write_state(urdc);
4491 4485
4492 4486 mutex_enter(&rdc_conf_lock);
4493 4487 wakeup_busy(krdc);
4494 4488 mutex_exit(&rdc_conf_lock);
4495 4489
4496 4490 return (0);
4497 4491
4498 4492 bmpfail:
4499 4493 if (options & RDC_OPT_PRIMARY)
4500 4494 spcs_s_add(kstatus, RDC_EBITMAP, urdc->primary.bitmap);
4501 4495 else
4502 4496 spcs_s_add(kstatus, RDC_EBITMAP, urdc->secondary.bitmap);
4503 4497 rc = RDC_EBITMAP;
4504 4498 if (rdc_get_vflags(urdc) & RDC_ENABLED) {
4505 4499 rdc_group_exit(krdc);
4506 4500 (void) rdc_unintercept(krdc);
4507 4501 rdc_group_enter(krdc);
4508 4502 }
4509 4503
4510 4504 fail:
4511 4505 rdc_kstat_delete(index);
4512 4506 /* Don't unset krdc->intf here, unlike _rdc_enable */
4513 4507
4514 4508 /* Configured but not enabled */
4515 4509 ASSERT(IS_CONFIGURED(krdc) && !IS_ENABLED(urdc));
4516 4510
4517 4511 rdc_dev_close(krdc);
4518 4512 rdc_close_direct(krdc);
4519 4513 rdc_destroy_svinfo(svp);
4520 4514
4521 4515 /* Configured but not enabled */
4522 4516 ASSERT(IS_CONFIGURED(krdc) && !IS_ENABLED(urdc));
4523 4517
4524 4518 rdc_group_exit(krdc);
4525 4519
4526 4520 mutex_enter(&rdc_conf_lock);
4527 4521
4528 4522 /* Configured but not enabled */
4529 4523 ASSERT(IS_CONFIGURED(krdc) && !IS_ENABLED(urdc));
4530 4524
4531 4525 remove_from_group(krdc);
4532 4526
4533 4527 if (IS_MANY(krdc) || IS_MULTI(krdc))
4534 4528 remove_from_many(krdc);
4535 4529
4536 4530 rdc_u_init(urdc);
4537 4531
4538 4532 ASSERT(krdc->type_flag & RDC_CONFIGURED);
4539 4533 krdc->type_flag = 0;
4540 4534 wakeup_busy(krdc);
4541 4535
4542 4536 mutex_exit(&rdc_conf_lock);
4543 4537
4544 4538 return (rc);
4545 4539 }
4546 4540
4547 4541 static int
4548 4542 rdc_resume(rdc_config_t *uparms, spcs_s_info_t kstatus)
4549 4543 {
4550 4544 char itmp[10];
4551 4545 int rc;
4552 4546
4553 4547 if (!(uparms->options & RDC_OPT_SYNC) &&
4554 4548 !(uparms->options & RDC_OPT_ASYNC)) {
4555 4549 (void) spcs_s_inttostring(
4556 4550 uparms->options, itmp, sizeof (itmp), 1);
4557 4551 spcs_s_add(kstatus, RDC_EEINVAL, itmp);
4558 4552 rc = RDC_EEINVAL;
4559 4553 goto done;
4560 4554 }
4561 4555
4562 4556 if (!(uparms->options & RDC_OPT_PRIMARY) &&
4563 4557 !(uparms->options & RDC_OPT_SECONDARY)) {
4564 4558 (void) spcs_s_inttostring(
4565 4559 uparms->options, itmp, sizeof (itmp), 1);
4566 4560 spcs_s_add(kstatus, RDC_EEINVAL, itmp);
4567 4561 rc = RDC_EEINVAL;
4568 4562 goto done;
4569 4563 }
4570 4564
4571 4565 rc = _rdc_resume(uparms->rdc_set, uparms->options, kstatus);
4572 4566 done:
4573 4567 return (rc);
4574 4568 }
4575 4569
4576 4570 /*
4577 4571 * if rdc_group_log is called because a volume has failed,
4578 4572 * we must disgard the queue to preserve write ordering.
4579 4573 * later perhaps, we can keep queuing, but we would have to
4580 4574 * rewrite the i/o path to acommodate that. currently, if there
4581 4575 * is a volume failure, the buffers are satisfied remotely and
4582 4576 * there is no way to satisfy them from the current diskq config
4583 4577 * phew, if we do that.. it will be difficult
4584 4578 */
4585 4579 int
4586 4580 rdc_can_queue(rdc_k_info_t *krdc)
4587 4581 {
4588 4582 rdc_k_info_t *p;
4589 4583 rdc_u_info_t *q;
4590 4584
4591 4585 for (p = krdc->group_next; ; p = p->group_next) {
4592 4586 q = &rdc_u_info[p->index];
4593 4587 if (IS_STATE(q, RDC_VOL_FAILED))
4594 4588 return (0);
4595 4589 if (p == krdc)
4596 4590 break;
4597 4591 }
4598 4592 return (1);
4599 4593 }
4600 4594
4601 4595 /*
4602 4596 * wait here, until all in flight async i/o's have either
4603 4597 * finished or failed. Avoid the race with r_net_state()
4604 4598 * which tells remote end to log.
4605 4599 */
4606 4600 void
4607 4601 rdc_inflwait(rdc_group_t *grp)
4608 4602 {
4609 4603 int bail = RDC_CLNT_TMOUT * 2; /* to include retries */
4610 4604 volatile int *inflitems;
4611 4605
4612 4606 if (RDC_IS_DISKQ(grp))
4613 4607 inflitems = (&(grp->diskq.inflitems));
4614 4608 else
4615 4609 inflitems = (&(grp->ra_queue.inflitems));
4616 4610
4617 4611 while (*inflitems && (--bail > 0))
4618 4612 delay(HZ);
4619 4613 }
4620 4614
4621 4615 void
4622 4616 rdc_group_log(rdc_k_info_t *krdc, int flag, char *why)
4623 4617 {
4624 4618 rdc_u_info_t *urdc = &rdc_u_info[krdc->index];
4625 4619 rdc_k_info_t *p;
4626 4620 rdc_u_info_t *q;
4627 4621 int do_group;
4628 4622 int sm, um, md;
4629 4623 disk_queue *dq;
4630 4624
4631 4625 void (*flag_op)(rdc_u_info_t *urdc, int flag);
4632 4626
4633 4627 ASSERT(MUTEX_HELD(&krdc->group->lock));
4634 4628
4635 4629 if (!IS_ENABLED(urdc))
4636 4630 return;
4637 4631
4638 4632 rdc_many_enter(krdc);
4639 4633
4640 4634 if ((flag & RDC_QUEUING) && (!IS_STATE(urdc, RDC_SYNCING)) &&
4641 4635 (rdc_can_queue(krdc))) {
4642 4636 flag_op = rdc_set_flags; /* keep queuing, link error */
4643 4637 flag &= ~RDC_FLUSH;
4644 4638 } else {
4645 4639 flag_op = rdc_clr_flags; /* stop queuing, user request */
4646 4640 }
4647 4641
4648 4642 do_group = 1;
4649 4643 if (!(rdc_get_vflags(urdc) & RDC_PRIMARY))
4650 4644 do_group = 0;
4651 4645 else if ((urdc->group_name[0] == 0) ||
4652 4646 (rdc_get_vflags(urdc) & RDC_LOGGING) ||
4653 4647 (rdc_get_vflags(urdc) & RDC_SYNCING))
4654 4648 do_group = 0;
4655 4649 if (do_group) {
4656 4650 for (p = krdc->group_next; p != krdc; p = p->group_next) {
4657 4651 q = &rdc_u_info[p->index];
4658 4652 if (!IS_ENABLED(q))
4659 4653 continue;
4660 4654 if ((rdc_get_vflags(q) & RDC_LOGGING) ||
4661 4655 (rdc_get_vflags(q) & RDC_SYNCING)) {
4662 4656 do_group = 0;
4663 4657 break;
4664 4658 }
4665 4659 }
4666 4660 }
4667 4661 if (!do_group && (flag & RDC_FORCE_GROUP))
4668 4662 do_group = 1;
4669 4663
4670 4664 rdc_many_exit(krdc);
4671 4665 dq = &krdc->group->diskq;
4672 4666 if (do_group) {
4673 4667 #ifdef DEBUG
4674 4668 cmn_err(CE_NOTE, "!SNDR:Group point-in-time for grp: %s %s:%s",
4675 4669 urdc->group_name, urdc->primary.intf, urdc->secondary.intf);
4676 4670 #endif
4677 4671 DTRACE_PROBE(rdc_diskq_group_PIT);
4678 4672
4679 4673 /* Set group logging at the same PIT under rdc_many_lock */
4680 4674 rdc_many_enter(krdc);
4681 4675 rdc_set_flags_log(urdc, RDC_LOGGING, why);
4682 4676 if (RDC_IS_DISKQ(krdc->group))
4683 4677 flag_op(urdc, RDC_QUEUING);
4684 4678 for (p = krdc->group_next; p != krdc; p = p->group_next) {
4685 4679 q = &rdc_u_info[p->index];
4686 4680 if (!IS_ENABLED(q))
4687 4681 continue;
4688 4682 rdc_set_flags_log(q, RDC_LOGGING,
4689 4683 "consistency group member following leader");
4690 4684 if (RDC_IS_DISKQ(p->group))
4691 4685 flag_op(q, RDC_QUEUING);
4692 4686 }
4693 4687
4694 4688 rdc_many_exit(krdc);
4695 4689
4696 4690 /*
4697 4691 * This can cause the async threads to fail,
4698 4692 * which in turn will call rdc_group_log()
4699 4693 * again. Release the lock and re-aquire.
4700 4694 */
4701 4695 rdc_group_exit(krdc);
4702 4696
4703 4697 while (rdc_dump_alloc_bufs_cd(krdc->index) == EAGAIN)
4704 4698 delay(2);
4705 4699 if (!RDC_IS_DISKQ(krdc->group))
4706 4700 RDC_ZERO_BITREF(krdc);
4707 4701
4708 4702 rdc_inflwait(krdc->group);
4709 4703
4710 4704 /*
4711 4705 * a little lazy, but neat. recall dump_alloc_bufs to
4712 4706 * ensure that the queue pointers & seq are reset properly
4713 4707 * after we have waited for inflight stuff
4714 4708 */
4715 4709 while (rdc_dump_alloc_bufs_cd(krdc->index) == EAGAIN)
4716 4710 delay(2);
4717 4711
4718 4712 rdc_group_enter(krdc);
4719 4713 if (RDC_IS_DISKQ(krdc->group) && (!(flag & RDC_QUEUING))) {
4720 4714 /* fail or user request */
4721 4715 RDC_ZERO_BITREF(krdc);
4722 4716 mutex_enter(&krdc->group->diskq.disk_qlock);
4723 4717 rdc_init_diskq_header(krdc->group,
4724 4718 &krdc->group->diskq.disk_hdr);
4725 4719 SET_QNXTIO(dq, QHEAD(dq));
4726 4720 mutex_exit(&krdc->group->diskq.disk_qlock);
4727 4721 }
4728 4722
4729 4723 if (flag & RDC_ALLREMOTE) {
4730 4724 /* Tell other node to start logging */
4731 4725 if (krdc->lsrv && krdc->intf && !krdc->intf->if_down)
4732 4726 (void) rdc_net_state(krdc->index,
4733 4727 CCIO_ENABLELOG);
4734 4728 }
4735 4729
4736 4730 if (flag & (RDC_ALLREMOTE | RDC_OTHERREMOTE)) {
4737 4731 rdc_many_enter(krdc);
4738 4732 for (p = krdc->group_next; p != krdc;
4739 4733 p = p->group_next) {
4740 4734 if (p->lsrv && krdc->intf &&
4741 4735 !krdc->intf->if_down) {
4742 4736 (void) rdc_net_state(p->index,
4743 4737 CCIO_ENABLELOG);
4744 4738 }
4745 4739 }
4746 4740 rdc_many_exit(krdc);
4747 4741 }
4748 4742
4749 4743 rdc_write_state(urdc);
4750 4744 for (p = krdc->group_next; p != krdc; p = p->group_next) {
4751 4745 q = &rdc_u_info[p->index];
4752 4746 if (!IS_ENABLED(q))
4753 4747 continue;
4754 4748 rdc_write_state(q);
4755 4749 }
4756 4750 } else {
4757 4751 /* No point in time is possible, just deal with single set */
4758 4752
4759 4753 if (rdc_get_vflags(urdc) & RDC_PRIMARY) {
4760 4754 halt_sync(krdc);
4761 4755 } else {
4762 4756 if (rdc_net_getstate(krdc, &sm, &um, &md, TRUE) < 0) {
4763 4757 rdc_clr_flags(urdc, RDC_SYNCING);
4764 4758 rdc_set_flags_log(urdc, RDC_LOGGING,
4765 4759 "failed to read remote state");
4766 4760
4767 4761 rdc_write_state(urdc);
4768 4762 while (rdc_dump_alloc_bufs_cd(krdc->index)
4769 4763 == EAGAIN)
4770 4764 delay(2);
4771 4765 if ((RDC_IS_DISKQ(krdc->group)) &&
4772 4766 (!(flag & RDC_QUEUING))) { /* fail! */
4773 4767 mutex_enter(QLOCK(dq));
4774 4768 rdc_init_diskq_header(krdc->group,
4775 4769 &krdc->group->diskq.disk_hdr);
4776 4770 SET_QNXTIO(dq, QHEAD(dq));
4777 4771 mutex_exit(QLOCK(dq));
4778 4772 }
4779 4773
4780 4774 return;
4781 4775 }
4782 4776 }
4783 4777
4784 4778 if (rdc_get_vflags(urdc) & RDC_SYNCING)
4785 4779 return;
4786 4780
4787 4781 if (RDC_IS_DISKQ(krdc->group))
4788 4782 flag_op(urdc, RDC_QUEUING);
4789 4783
4790 4784 if ((RDC_IS_DISKQ(krdc->group)) &&
4791 4785 (!(flag & RDC_QUEUING))) { /* fail! */
4792 4786 RDC_ZERO_BITREF(krdc);
4793 4787 mutex_enter(QLOCK(dq));
4794 4788 rdc_init_diskq_header(krdc->group,
4795 4789 &krdc->group->diskq.disk_hdr);
4796 4790 SET_QNXTIO(dq, QHEAD(dq));
4797 4791 mutex_exit(QLOCK(dq));
4798 4792 }
4799 4793
4800 4794 if (!(rdc_get_vflags(urdc) & RDC_LOGGING)) {
4801 4795 rdc_set_flags_log(urdc, RDC_LOGGING, why);
4802 4796
4803 4797 rdc_write_state(urdc);
4804 4798
4805 4799 while (rdc_dump_alloc_bufs_cd(krdc->index) == EAGAIN)
4806 4800 delay(2);
4807 4801 if (!RDC_IS_DISKQ(krdc->group))
4808 4802 RDC_ZERO_BITREF(krdc);
4809 4803
4810 4804 rdc_inflwait(krdc->group);
4811 4805 /*
4812 4806 * a little lazy, but neat. recall dump_alloc_bufs to
4813 4807 * ensure that the queue pointers & seq are reset
4814 4808 * properly after we have waited for inflight stuff
4815 4809 */
4816 4810 while (rdc_dump_alloc_bufs_cd(krdc->index) == EAGAIN)
4817 4811 delay(2);
4818 4812
4819 4813 if (flag & RDC_ALLREMOTE) {
4820 4814 /* Tell other node to start logging */
4821 4815 if (krdc->lsrv && krdc->intf &&
4822 4816 !krdc->intf->if_down) {
4823 4817 (void) rdc_net_state(krdc->index,
4824 4818 CCIO_ENABLELOG);
4825 4819 }
4826 4820 }
4827 4821 }
4828 4822 }
4829 4823 /*
4830 4824 * just in case any threads were in flight during log cleanup
4831 4825 */
4832 4826 if (RDC_IS_DISKQ(krdc->group)) {
4833 4827 mutex_enter(QLOCK(dq));
4834 4828 cv_broadcast(&dq->qfullcv);
4835 4829 mutex_exit(QLOCK(dq));
4836 4830 }
4837 4831 }
4838 4832
4839 4833 static int
4840 4834 _rdc_log(rdc_k_info_t *krdc, rdc_set_t *rdc_set, spcs_s_info_t kstatus)
4841 4835 {
4842 4836 rdc_u_info_t *urdc = &rdc_u_info[krdc->index];
4843 4837 rdc_srv_t *svp;
4844 4838
4845 4839 rdc_group_enter(krdc);
4846 4840 if (rdc_check(krdc, rdc_set)) {
4847 4841 rdc_group_exit(krdc);
4848 4842 spcs_s_add(kstatus, RDC_EALREADY, rdc_set->primary.file,
4849 4843 rdc_set->secondary.file);
4850 4844 return (RDC_EALREADY);
4851 4845 }
4852 4846
4853 4847 svp = krdc->lsrv;
4854 4848 if (rdc_get_vflags(urdc) & RDC_PRIMARY)
4855 4849 krdc->intf = rdc_add_to_if(svp, &(urdc->primary.addr),
4856 4850 &(urdc->secondary.addr), 1);
4857 4851 else
4858 4852 krdc->intf = rdc_add_to_if(svp, &(urdc->secondary.addr),
4859 4853 &(urdc->primary.addr), 0);
4860 4854
4861 4855 if (!krdc->intf) {
4862 4856 rdc_group_exit(krdc);
4863 4857 spcs_s_add(kstatus, RDC_EADDTOIF, urdc->primary.intf,
4864 4858 urdc->secondary.intf);
4865 4859 return (RDC_EADDTOIF);
4866 4860 }
4867 4861
4868 4862 rdc_group_log(krdc, RDC_FLUSH | RDC_ALLREMOTE, NULL);
4869 4863
4870 4864 if (rdc_get_vflags(urdc) & RDC_SYNCING) {
4871 4865 rdc_group_exit(krdc);
4872 4866 spcs_s_add(kstatus, RDC_ESYNCING, urdc->primary.file);
4873 4867 return (RDC_ESYNCING);
4874 4868 }
4875 4869
4876 4870 rdc_group_exit(krdc);
4877 4871
4878 4872 return (0);
4879 4873 }
4880 4874
4881 4875 static int
4882 4876 rdc_log(rdc_config_t *uparms, spcs_s_info_t kstatus)
4883 4877 {
4884 4878 rdc_k_info_t *krdc;
4885 4879 int rc = 0;
4886 4880 int index;
4887 4881
4888 4882 mutex_enter(&rdc_conf_lock);
4889 4883 index = rdc_lookup_byname(uparms->rdc_set);
4890 4884 if (index >= 0)
4891 4885 krdc = &rdc_k_info[index];
4892 4886 if (index < 0 || (krdc->type_flag & RDC_DISABLEPEND)) {
4893 4887 mutex_exit(&rdc_conf_lock);
4894 4888 spcs_s_add(kstatus, RDC_EALREADY, uparms->rdc_set->primary.file,
4895 4889 uparms->rdc_set->secondary.file);
4896 4890 return (RDC_EALREADY);
4897 4891 }
4898 4892
4899 4893 set_busy(krdc);
4900 4894 if (krdc->type_flag == 0) {
4901 4895 /* A resume or enable failed */
4902 4896 wakeup_busy(krdc);
4903 4897 mutex_exit(&rdc_conf_lock);
4904 4898 spcs_s_add(kstatus, RDC_EALREADY, uparms->rdc_set->primary.file,
4905 4899 uparms->rdc_set->secondary.file);
4906 4900 return (RDC_EALREADY);
4907 4901 }
4908 4902 mutex_exit(&rdc_conf_lock);
4909 4903
4910 4904 rc = _rdc_log(krdc, uparms->rdc_set, kstatus);
4911 4905
4912 4906 mutex_enter(&rdc_conf_lock);
4913 4907 wakeup_busy(krdc);
4914 4908 mutex_exit(&rdc_conf_lock);
4915 4909
4916 4910 return (rc);
4917 4911 }
4918 4912
4919 4913
4920 4914 static int
4921 4915 rdc_wait(rdc_config_t *uparms, spcs_s_info_t kstatus)
4922 4916 {
4923 4917 rdc_k_info_t *krdc;
4924 4918 rdc_u_info_t *urdc;
4925 4919 int index;
4926 4920 int need_check = 0;
4927 4921
4928 4922 mutex_enter(&rdc_conf_lock);
4929 4923 index = rdc_lookup_byname(uparms->rdc_set);
4930 4924 if (index >= 0)
4931 4925 krdc = &rdc_k_info[index];
4932 4926 if (index < 0 || (krdc->type_flag & RDC_DISABLEPEND)) {
4933 4927 mutex_exit(&rdc_conf_lock);
4934 4928 spcs_s_add(kstatus, RDC_EALREADY, uparms->rdc_set->primary.file,
4935 4929 uparms->rdc_set->secondary.file);
4936 4930 return (RDC_EALREADY);
4937 4931 }
4938 4932
4939 4933 urdc = &rdc_u_info[index];
4940 4934 if (!(rdc_get_vflags(urdc) & RDC_PRIMARY)) {
4941 4935 mutex_exit(&rdc_conf_lock);
4942 4936 return (0);
4943 4937 }
4944 4938
4945 4939 set_busy(krdc);
4946 4940 if (krdc->type_flag == 0) {
4947 4941 /* A resume or enable failed */
4948 4942 wakeup_busy(krdc);
4949 4943 mutex_exit(&rdc_conf_lock);
4950 4944 spcs_s_add(kstatus, RDC_EALREADY, uparms->rdc_set->primary.file,
4951 4945 uparms->rdc_set->secondary.file);
4952 4946 return (RDC_EALREADY);
4953 4947 }
4954 4948 mutex_exit(&rdc_conf_lock);
4955 4949
4956 4950 rdc_group_enter(krdc);
4957 4951 if (rdc_check(krdc, uparms->rdc_set)) {
4958 4952 rdc_group_exit(krdc);
4959 4953 mutex_enter(&rdc_conf_lock);
4960 4954 wakeup_busy(krdc);
4961 4955 mutex_exit(&rdc_conf_lock);
4962 4956 spcs_s_add(kstatus, RDC_EALREADY, uparms->rdc_set->primary.file,
4963 4957 uparms->rdc_set->secondary.file);
4964 4958 return (RDC_EALREADY);
4965 4959 }
4966 4960
4967 4961 if ((rdc_get_vflags(urdc) & (RDC_SYNCING | RDC_PRIMARY)) !=
4968 4962 (RDC_SYNCING | RDC_PRIMARY)) {
4969 4963 rdc_group_exit(krdc);
4970 4964 mutex_enter(&rdc_conf_lock);
4971 4965 wakeup_busy(krdc);
4972 4966 mutex_exit(&rdc_conf_lock);
4973 4967 return (0);
4974 4968 }
4975 4969 if (rdc_get_vflags(urdc) & RDC_SYNCING) {
4976 4970 need_check = 1;
4977 4971 }
4978 4972 rdc_group_exit(krdc);
4979 4973
4980 4974 mutex_enter(&net_blk_lock);
4981 4975
4982 4976 mutex_enter(&rdc_conf_lock);
4983 4977 wakeup_busy(krdc);
4984 4978 mutex_exit(&rdc_conf_lock);
4985 4979
4986 4980 (void) cv_wait_sig(&krdc->synccv, &net_blk_lock);
4987 4981
4988 4982 mutex_exit(&net_blk_lock);
4989 4983 if (need_check) {
4990 4984 if (krdc->sync_done == RDC_COMPLETED) {
4991 4985 return (0);
4992 4986 } else if (krdc->sync_done == RDC_FAILED) {
4993 4987 return (EIO);
4994 4988 }
4995 4989 }
4996 4990 return (0);
4997 4991 }
4998 4992
4999 4993
5000 4994 static int
5001 4995 rdc_health(rdc_config_t *uparms, spcs_s_info_t kstatus, int *rvp)
5002 4996 {
5003 4997 rdc_k_info_t *krdc;
5004 4998 rdc_u_info_t *urdc;
5005 4999 int rc = 0;
5006 5000 int index;
5007 5001
5008 5002 mutex_enter(&rdc_conf_lock);
5009 5003 index = rdc_lookup_byname(uparms->rdc_set);
5010 5004 if (index >= 0)
5011 5005 krdc = &rdc_k_info[index];
5012 5006 if (index < 0 || (krdc->type_flag & RDC_DISABLEPEND)) {
5013 5007 mutex_exit(&rdc_conf_lock);
5014 5008 spcs_s_add(kstatus, RDC_EALREADY, uparms->rdc_set->primary.file,
5015 5009 uparms->rdc_set->secondary.file);
5016 5010 return (RDC_EALREADY);
5017 5011 }
5018 5012
5019 5013 set_busy(krdc);
5020 5014 if (krdc->type_flag == 0) {
5021 5015 /* A resume or enable failed */
5022 5016 wakeup_busy(krdc);
5023 5017 mutex_exit(&rdc_conf_lock);
5024 5018 spcs_s_add(kstatus, RDC_EALREADY, uparms->rdc_set->primary.file,
5025 5019 uparms->rdc_set->secondary.file);
5026 5020 return (RDC_EALREADY);
5027 5021 }
5028 5022
5029 5023 mutex_exit(&rdc_conf_lock);
5030 5024
5031 5025 rdc_group_enter(krdc);
5032 5026 if (rdc_check(krdc, uparms->rdc_set)) {
5033 5027 rdc_group_exit(krdc);
5034 5028 spcs_s_add(kstatus, RDC_EALREADY, uparms->rdc_set->primary.file,
5035 5029 uparms->rdc_set->secondary.file);
5036 5030 rc = RDC_EALREADY;
5037 5031 goto done;
5038 5032 }
5039 5033
5040 5034 urdc = &rdc_u_info[index];
5041 5035 if (rdc_isactive_if(&(urdc->primary.addr), &(urdc->secondary.addr)))
5042 5036 *rvp = RDC_ACTIVE;
5043 5037 else
5044 5038 *rvp = RDC_INACTIVE;
5045 5039
5046 5040 rdc_group_exit(krdc);
5047 5041
5048 5042 done:
5049 5043 mutex_enter(&rdc_conf_lock);
5050 5044 wakeup_busy(krdc);
5051 5045 mutex_exit(&rdc_conf_lock);
5052 5046
5053 5047 return (rc);
5054 5048 }
5055 5049
5056 5050
5057 5051 static int
5058 5052 rdc_reconfig(rdc_config_t *uparms, spcs_s_info_t kstatus)
5059 5053 {
5060 5054 rdc_k_info_t *krdc;
5061 5055 rdc_u_info_t *urdc;
5062 5056 int rc = -2;
5063 5057 int index;
5064 5058
5065 5059 mutex_enter(&rdc_conf_lock);
5066 5060 index = rdc_lookup_byname(uparms->rdc_set);
5067 5061 if (index >= 0)
5068 5062 krdc = &rdc_k_info[index];
5069 5063 if (index < 0 || (krdc->type_flag & RDC_DISABLEPEND)) {
5070 5064 mutex_exit(&rdc_conf_lock);
5071 5065 spcs_s_add(kstatus, RDC_EALREADY, uparms->rdc_set->primary.file,
5072 5066 uparms->rdc_set->secondary.file);
5073 5067 return (RDC_EALREADY);
5074 5068 }
5075 5069
5076 5070 urdc = &rdc_u_info[index];
5077 5071 set_busy(krdc);
5078 5072 if (krdc->type_flag == 0) {
5079 5073 /* A resume or enable failed */
5080 5074 wakeup_busy(krdc);
5081 5075 mutex_exit(&rdc_conf_lock);
5082 5076 spcs_s_add(kstatus, RDC_EALREADY, uparms->rdc_set->primary.file,
5083 5077 uparms->rdc_set->secondary.file);
5084 5078 return (RDC_EALREADY);
5085 5079 }
5086 5080
5087 5081 mutex_exit(&rdc_conf_lock);
5088 5082
5089 5083 rdc_group_enter(krdc);
5090 5084 if (rdc_check(krdc, uparms->rdc_set)) {
5091 5085 rdc_group_exit(krdc);
5092 5086 spcs_s_add(kstatus, RDC_EALREADY, uparms->rdc_set->primary.file,
5093 5087 uparms->rdc_set->secondary.file);
5094 5088 rc = RDC_EALREADY;
5095 5089 goto done;
5096 5090 }
5097 5091 if ((rdc_get_vflags(urdc) & RDC_BMP_FAILED) && (krdc->bitmapfd))
5098 5092 (void) rdc_reset_bitmap(krdc);
5099 5093
5100 5094 /* Move to a new bitmap if necessary */
5101 5095 if (strncmp(urdc->primary.bitmap, uparms->rdc_set->primary.bitmap,
5102 5096 NSC_MAXPATH) != 0) {
5103 5097 if (rdc_get_vflags(urdc) & RDC_PRIMARY) {
5104 5098 rc = rdc_move_bitmap(krdc,
5105 5099 uparms->rdc_set->primary.bitmap);
5106 5100 } else {
5107 5101 (void) strncpy(urdc->primary.bitmap,
5108 5102 uparms->rdc_set->primary.bitmap, NSC_MAXPATH);
5109 5103 /* simulate a succesful rdc_move_bitmap */
5110 5104 rc = 0;
5111 5105 }
5112 5106 }
5113 5107 if (strncmp(urdc->secondary.bitmap, uparms->rdc_set->secondary.bitmap,
5114 5108 NSC_MAXPATH) != 0) {
5115 5109 if (rdc_get_vflags(urdc) & RDC_PRIMARY) {
5116 5110 (void) strncpy(urdc->secondary.bitmap,
5117 5111 uparms->rdc_set->secondary.bitmap, NSC_MAXPATH);
5118 5112 /* simulate a succesful rdc_move_bitmap */
5119 5113 rc = 0;
5120 5114 } else {
5121 5115 rc = rdc_move_bitmap(krdc,
5122 5116 uparms->rdc_set->secondary.bitmap);
5123 5117 }
5124 5118 }
5125 5119 if (rc == -1) {
5126 5120 rdc_group_exit(krdc);
5127 5121 spcs_s_add(kstatus, RDC_EBMPRECONFIG,
5128 5122 uparms->rdc_set->secondary.intf,
5129 5123 uparms->rdc_set->secondary.file);
5130 5124 rc = RDC_EBMPRECONFIG;
5131 5125 goto done;
5132 5126 }
5133 5127
5134 5128 /*
5135 5129 * At this point we fail any other type of reconfig
5136 5130 * if not in logging mode and we did not do a bitmap reconfig
5137 5131 */
5138 5132
5139 5133 if (!(rdc_get_vflags(urdc) & RDC_LOGGING) && rc == -2) {
5140 5134 /* no other changes possible unless logging */
5141 5135 rdc_group_exit(krdc);
5142 5136 spcs_s_add(kstatus, RDC_ENOTLOGGING,
5143 5137 uparms->rdc_set->primary.intf,
5144 5138 uparms->rdc_set->primary.file,
5145 5139 uparms->rdc_set->secondary.intf,
5146 5140 uparms->rdc_set->secondary.file);
5147 5141 rc = RDC_ENOTLOGGING;
5148 5142 goto done;
5149 5143 }
5150 5144 rc = 0;
5151 5145 /* Change direct file if necessary */
5152 5146 if ((rdc_get_vflags(urdc) & RDC_PRIMARY) &&
5153 5147 strncmp(urdc->direct_file, uparms->rdc_set->direct_file,
5154 5148 NSC_MAXPATH)) {
5155 5149 if (!(rdc_get_vflags(urdc) & RDC_LOGGING)) {
5156 5150 rdc_group_exit(krdc);
5157 5151 goto notlogging;
5158 5152 }
5159 5153 rdc_close_direct(krdc);
5160 5154 (void) strncpy(urdc->direct_file, uparms->rdc_set->direct_file,
5161 5155 NSC_MAXPATH);
5162 5156
5163 5157 if (urdc->direct_file[0]) {
5164 5158 if (rdc_open_direct(krdc) == NULL)
5165 5159 rdc_set_flags(urdc, RDC_FCAL_FAILED);
5166 5160 else
5167 5161 rdc_clr_flags(urdc, RDC_FCAL_FAILED);
5168 5162 }
5169 5163 }
5170 5164
5171 5165 rdc_group_exit(krdc);
5172 5166
5173 5167 /* Change group if necessary */
5174 5168 if (strncmp(urdc->group_name, uparms->rdc_set->group_name,
5175 5169 NSC_MAXPATH) != 0) {
5176 5170 char orig_group[NSC_MAXPATH];
5177 5171 if (!(rdc_get_vflags(urdc) & RDC_LOGGING))
5178 5172 goto notlogging;
5179 5173 mutex_enter(&rdc_conf_lock);
5180 5174
5181 5175 (void) strncpy(orig_group, urdc->group_name, NSC_MAXPATH);
5182 5176 (void) strncpy(urdc->group_name, uparms->rdc_set->group_name,
5183 5177 NSC_MAXPATH);
5184 5178
5185 5179 rc = change_group(krdc, uparms->options);
5186 5180 if (rc == RDC_EQNOADD) {
5187 5181 mutex_exit(&rdc_conf_lock);
5188 5182 spcs_s_add(kstatus, RDC_EQNOADD,
5189 5183 uparms->rdc_set->disk_queue);
5190 5184 goto done;
5191 5185 } else if (rc < 0) {
5192 5186 (void) strncpy(urdc->group_name, orig_group,
5193 5187 NSC_MAXPATH);
5194 5188 mutex_exit(&rdc_conf_lock);
5195 5189 spcs_s_add(kstatus, RDC_EGROUP,
5196 5190 urdc->primary.intf, urdc->primary.file,
5197 5191 urdc->secondary.intf, urdc->secondary.file,
5198 5192 uparms->rdc_set->group_name);
5199 5193 rc = RDC_EGROUP;
5200 5194 goto done;
5201 5195 }
5202 5196
5203 5197 mutex_exit(&rdc_conf_lock);
5204 5198
5205 5199 if (rc >= 0) {
5206 5200 if (!(rdc_get_vflags(urdc) & RDC_LOGGING))
5207 5201 goto notlogging;
5208 5202 if (uparms->options & RDC_OPT_ASYNC) {
5209 5203 mutex_enter(&rdc_conf_lock);
5210 5204 krdc->type_flag |= RDC_ASYNCMODE;
5211 5205 mutex_exit(&rdc_conf_lock);
5212 5206 if (uparms->options & RDC_OPT_PRIMARY)
5213 5207 krdc->bitmap_ref =
5214 5208 (uchar_t *)kmem_zalloc(
5215 5209 (krdc->bitmap_size * BITS_IN_BYTE *
5216 5210 BMAP_REF_PREF_SIZE), KM_SLEEP);
5217 5211 rdc_group_enter(krdc);
5218 5212 rdc_set_flags(urdc, RDC_ASYNC);
5219 5213 rdc_group_exit(krdc);
5220 5214 } else {
5221 5215 mutex_enter(&rdc_conf_lock);
5222 5216 krdc->type_flag &= ~RDC_ASYNCMODE;
5223 5217 mutex_exit(&rdc_conf_lock);
5224 5218 rdc_group_enter(krdc);
5225 5219 rdc_clr_flags(urdc, RDC_ASYNC);
5226 5220 rdc_group_exit(krdc);
5227 5221 if (krdc->bitmap_ref) {
5228 5222 kmem_free(krdc->bitmap_ref,
5229 5223 (krdc->bitmap_size * BITS_IN_BYTE *
5230 5224 BMAP_REF_PREF_SIZE));
5231 5225 krdc->bitmap_ref = NULL;
5232 5226 }
5233 5227 }
5234 5228 }
5235 5229 } else {
5236 5230 if ((((uparms->options & RDC_OPT_ASYNC) == 0) &&
5237 5231 ((krdc->type_flag & RDC_ASYNCMODE) != 0)) ||
5238 5232 (((uparms->options & RDC_OPT_ASYNC) != 0) &&
5239 5233 ((krdc->type_flag & RDC_ASYNCMODE) == 0))) {
5240 5234 if (!(rdc_get_vflags(urdc) & RDC_LOGGING))
5241 5235 goto notlogging;
5242 5236
5243 5237 if (krdc->group->count > 1) {
5244 5238 spcs_s_add(kstatus, RDC_EGROUPMODE);
5245 5239 rc = RDC_EGROUPMODE;
5246 5240 goto done;
5247 5241 }
5248 5242 }
5249 5243
5250 5244 /* Switch sync/async if necessary */
5251 5245 if (krdc->group->count == 1) {
5252 5246 /* Only member of group. Can change sync/async */
5253 5247 if (((uparms->options & RDC_OPT_ASYNC) == 0) &&
5254 5248 ((krdc->type_flag & RDC_ASYNCMODE) != 0)) {
5255 5249 if (!(rdc_get_vflags(urdc) & RDC_LOGGING))
5256 5250 goto notlogging;
5257 5251 /* switch to sync */
5258 5252 mutex_enter(&rdc_conf_lock);
5259 5253 krdc->type_flag &= ~RDC_ASYNCMODE;
5260 5254 if (RDC_IS_DISKQ(krdc->group)) {
5261 5255 krdc->group->flags &= ~RDC_DISKQUE;
5262 5256 krdc->group->flags |= RDC_MEMQUE;
5263 5257 rdc_unintercept_diskq(krdc->group);
5264 5258 mutex_enter(&krdc->group->diskqmutex);
5265 5259 rdc_close_diskq(krdc->group);
5266 5260 mutex_exit(&krdc->group->diskqmutex);
5267 5261 bzero(&urdc->disk_queue,
5268 5262 sizeof (urdc->disk_queue));
5269 5263 }
5270 5264 mutex_exit(&rdc_conf_lock);
5271 5265 rdc_group_enter(krdc);
5272 5266 rdc_clr_flags(urdc, RDC_ASYNC);
5273 5267 rdc_group_exit(krdc);
5274 5268 if (krdc->bitmap_ref) {
5275 5269 kmem_free(krdc->bitmap_ref,
5276 5270 (krdc->bitmap_size * BITS_IN_BYTE *
5277 5271 BMAP_REF_PREF_SIZE));
5278 5272 krdc->bitmap_ref = NULL;
5279 5273 }
5280 5274 } else if (((uparms->options & RDC_OPT_ASYNC) != 0) &&
5281 5275 ((krdc->type_flag & RDC_ASYNCMODE) == 0)) {
5282 5276 if (!(rdc_get_vflags(urdc) & RDC_LOGGING))
5283 5277 goto notlogging;
5284 5278 /* switch to async */
5285 5279 mutex_enter(&rdc_conf_lock);
5286 5280 krdc->type_flag |= RDC_ASYNCMODE;
5287 5281 mutex_exit(&rdc_conf_lock);
5288 5282 if (uparms->options & RDC_OPT_PRIMARY)
5289 5283 krdc->bitmap_ref =
5290 5284 (uchar_t *)kmem_zalloc(
5291 5285 (krdc->bitmap_size * BITS_IN_BYTE *
5292 5286 BMAP_REF_PREF_SIZE), KM_SLEEP);
5293 5287 rdc_group_enter(krdc);
5294 5288 rdc_set_flags(urdc, RDC_ASYNC);
5295 5289 rdc_group_exit(krdc);
5296 5290 }
5297 5291 }
5298 5292 }
5299 5293 /* Reverse concept of primary and secondary */
5300 5294 if ((uparms->options & RDC_OPT_REVERSE_ROLE) != 0) {
5301 5295 rdc_set_t rdc_set;
5302 5296 struct netbuf paddr, saddr;
5303 5297
5304 5298 mutex_enter(&rdc_conf_lock);
5305 5299
5306 5300 /*
5307 5301 * Disallow role reversal for advanced configurations
5308 5302 */
5309 5303
5310 5304 if (IS_MANY(krdc) || IS_MULTI(krdc)) {
5311 5305 mutex_exit(&rdc_conf_lock);
5312 5306 spcs_s_add(kstatus, RDC_EMASTER, urdc->primary.intf,
5313 5307 urdc->primary.file, urdc->secondary.intf,
5314 5308 urdc->secondary.file);
5315 5309 return (RDC_EMASTER);
5316 5310 }
5317 5311 bzero((void *) &rdc_set, sizeof (rdc_set_t));
5318 5312 dup_rdc_netbuf(&urdc->primary.addr, &saddr);
5319 5313 dup_rdc_netbuf(&urdc->secondary.addr, &paddr);
5320 5314 free_rdc_netbuf(&urdc->primary.addr);
5321 5315 free_rdc_netbuf(&urdc->secondary.addr);
5322 5316 dup_rdc_netbuf(&saddr, &urdc->secondary.addr);
5323 5317 dup_rdc_netbuf(&paddr, &urdc->primary.addr);
5324 5318 free_rdc_netbuf(&paddr);
5325 5319 free_rdc_netbuf(&saddr);
5326 5320 /* copy primary parts of urdc to rdc_set field by field */
5327 5321 (void) strncpy(rdc_set.primary.intf, urdc->primary.intf,
5328 5322 MAX_RDC_HOST_SIZE);
5329 5323 (void) strncpy(rdc_set.primary.file, urdc->primary.file,
5330 5324 NSC_MAXPATH);
5331 5325 (void) strncpy(rdc_set.primary.bitmap, urdc->primary.bitmap,
5332 5326 NSC_MAXPATH);
5333 5327
5334 5328 /* Now overwrite urdc primary */
5335 5329 (void) strncpy(urdc->primary.intf, urdc->secondary.intf,
5336 5330 MAX_RDC_HOST_SIZE);
5337 5331 (void) strncpy(urdc->primary.file, urdc->secondary.file,
5338 5332 NSC_MAXPATH);
5339 5333 (void) strncpy(urdc->primary.bitmap, urdc->secondary.bitmap,
5340 5334 NSC_MAXPATH);
5341 5335
5342 5336 /* Now ovwewrite urdc secondary */
5343 5337 (void) strncpy(urdc->secondary.intf, rdc_set.primary.intf,
5344 5338 MAX_RDC_HOST_SIZE);
5345 5339 (void) strncpy(urdc->secondary.file, rdc_set.primary.file,
5346 5340 NSC_MAXPATH);
5347 5341 (void) strncpy(urdc->secondary.bitmap, rdc_set.primary.bitmap,
5348 5342 NSC_MAXPATH);
5349 5343
5350 5344 if (rdc_get_vflags(urdc) & RDC_PRIMARY) {
5351 5345 rdc_clr_flags(urdc, RDC_PRIMARY);
5352 5346 if (krdc->intf) {
5353 5347 krdc->intf->issecondary = 1;
5354 5348 krdc->intf->isprimary = 0;
5355 5349 krdc->intf->if_down = 1;
5356 5350 }
5357 5351 } else {
5358 5352 rdc_set_flags(urdc, RDC_PRIMARY);
5359 5353 if (krdc->intf) {
5360 5354 krdc->intf->issecondary = 0;
5361 5355 krdc->intf->isprimary = 1;
5362 5356 krdc->intf->if_down = 1;
5363 5357 }
5364 5358 }
5365 5359
5366 5360 if ((rdc_get_vflags(urdc) & RDC_PRIMARY) &&
5367 5361 ((krdc->type_flag & RDC_ASYNCMODE) != 0)) {
5368 5362 if (!krdc->bitmap_ref)
5369 5363 krdc->bitmap_ref =
5370 5364 (uchar_t *)kmem_zalloc((krdc->bitmap_size *
5371 5365 BITS_IN_BYTE * BMAP_REF_PREF_SIZE),
5372 5366 KM_SLEEP);
5373 5367 if (krdc->bitmap_ref == NULL) {
5374 5368 cmn_err(CE_WARN,
5375 5369 "!rdc_reconfig: bitmap_ref alloc %"
5376 5370 NSC_SZFMT " failed",
5377 5371 krdc->bitmap_size * BITS_IN_BYTE *
5378 5372 BMAP_REF_PREF_SIZE);
5379 5373 mutex_exit(&rdc_conf_lock);
5380 5374 return (-1);
5381 5375 }
5382 5376 }
5383 5377
5384 5378 if ((rdc_get_vflags(urdc) & RDC_PRIMARY) &&
5385 5379 (rdc_get_vflags(urdc) & RDC_SYNC_NEEDED)) {
5386 5380 /* Primary, so reverse sync needed */
5387 5381 rdc_many_enter(krdc);
5388 5382 rdc_clr_flags(urdc, RDC_SYNC_NEEDED);
5389 5383 rdc_set_mflags(urdc, RDC_RSYNC_NEEDED);
5390 5384 rdc_many_exit(krdc);
5391 5385 } else if (rdc_get_vflags(urdc) & RDC_RSYNC_NEEDED) {
5392 5386 /* Secondary, so forward sync needed */
5393 5387 rdc_many_enter(krdc);
5394 5388 rdc_clr_flags(urdc, RDC_RSYNC_NEEDED);
5395 5389 rdc_set_flags(urdc, RDC_SYNC_NEEDED);
5396 5390 rdc_many_exit(krdc);
5397 5391 }
5398 5392
5399 5393 /*
5400 5394 * rewrite bitmap header
5401 5395 */
5402 5396 rdc_write_state(urdc);
5403 5397 mutex_exit(&rdc_conf_lock);
5404 5398 }
5405 5399
5406 5400 done:
5407 5401 mutex_enter(&rdc_conf_lock);
5408 5402 wakeup_busy(krdc);
5409 5403 mutex_exit(&rdc_conf_lock);
5410 5404
5411 5405 return (rc);
5412 5406
5413 5407 notlogging:
5414 5408 /* no other changes possible unless logging */
5415 5409 mutex_enter(&rdc_conf_lock);
5416 5410 wakeup_busy(krdc);
5417 5411 mutex_exit(&rdc_conf_lock);
5418 5412 spcs_s_add(kstatus, RDC_ENOTLOGGING, urdc->primary.intf,
5419 5413 urdc->primary.file, urdc->secondary.intf,
5420 5414 urdc->secondary.file);
5421 5415 return (RDC_ENOTLOGGING);
5422 5416 }
5423 5417
5424 5418 static int
5425 5419 rdc_reset(rdc_config_t *uparms, spcs_s_info_t kstatus)
5426 5420 {
5427 5421 rdc_k_info_t *krdc;
5428 5422 rdc_u_info_t *urdc;
5429 5423 int rc = 0;
5430 5424 int index;
5431 5425 int cleared_error = 0;
5432 5426
5433 5427 mutex_enter(&rdc_conf_lock);
5434 5428 index = rdc_lookup_byname(uparms->rdc_set);
5435 5429 if (index >= 0)
5436 5430 krdc = &rdc_k_info[index];
5437 5431 if (index < 0 || (krdc->type_flag & RDC_DISABLEPEND)) {
5438 5432 mutex_exit(&rdc_conf_lock);
5439 5433 spcs_s_add(kstatus, RDC_EALREADY, uparms->rdc_set->primary.file,
5440 5434 uparms->rdc_set->secondary.file);
5441 5435 return (RDC_EALREADY);
5442 5436 }
5443 5437
5444 5438 urdc = &rdc_u_info[index];
5445 5439 set_busy(krdc);
5446 5440 if (krdc->type_flag == 0) {
5447 5441 /* A resume or enable failed */
5448 5442 wakeup_busy(krdc);
5449 5443 mutex_exit(&rdc_conf_lock);
5450 5444 spcs_s_add(kstatus, RDC_EALREADY, uparms->rdc_set->primary.file,
5451 5445 uparms->rdc_set->secondary.file);
5452 5446 return (RDC_EALREADY);
5453 5447 }
5454 5448
5455 5449 mutex_exit(&rdc_conf_lock);
5456 5450
5457 5451 rdc_group_enter(krdc);
5458 5452 if (rdc_check(krdc, uparms->rdc_set)) {
5459 5453 spcs_s_add(kstatus, RDC_EALREADY, uparms->rdc_set->primary.file,
5460 5454 uparms->rdc_set->secondary.file);
5461 5455 rc = RDC_EALREADY;
5462 5456 goto done;
5463 5457 }
5464 5458
5465 5459 if ((rdc_get_vflags(urdc) & RDC_BMP_FAILED) && (krdc->bitmapfd)) {
5466 5460 if (rdc_reset_bitmap(krdc) == 0)
5467 5461 cleared_error++;
5468 5462 }
5469 5463
5470 5464 /* Fix direct file if necessary */
5471 5465 if ((rdc_get_vflags(urdc) & RDC_PRIMARY) && urdc->direct_file[0]) {
5472 5466 if (rdc_open_direct(krdc) == NULL)
5473 5467 rdc_set_flags(urdc, RDC_FCAL_FAILED);
5474 5468 else {
5475 5469 rdc_clr_flags(urdc, RDC_FCAL_FAILED);
5476 5470 cleared_error++;
5477 5471 }
5478 5472 }
5479 5473
5480 5474 if ((rdc_get_vflags(urdc) & RDC_VOL_FAILED)) {
5481 5475 rdc_many_enter(krdc);
5482 5476 rdc_clr_flags(urdc, RDC_VOL_FAILED);
5483 5477 cleared_error++;
5484 5478 rdc_many_exit(krdc);
5485 5479 }
5486 5480
5487 5481 if (cleared_error) {
5488 5482 /* cleared an error so we should be in logging mode */
5489 5483 rdc_set_flags_log(urdc, RDC_LOGGING, "set reset");
5490 5484 }
5491 5485 rdc_group_exit(krdc);
5492 5486
5493 5487 if ((rdc_get_vflags(urdc) & RDC_DISKQ_FAILED))
5494 5488 rdc_unfail_diskq(krdc);
5495 5489
5496 5490 done:
5497 5491 mutex_enter(&rdc_conf_lock);
5498 5492 wakeup_busy(krdc);
5499 5493 mutex_exit(&rdc_conf_lock);
5500 5494
5501 5495 return (rc);
5502 5496 }
5503 5497
5504 5498
5505 5499 static int
5506 5500 rdc_tunable(rdc_config_t *uparms, spcs_s_info_t kstatus)
5507 5501 {
5508 5502 rdc_k_info_t *krdc;
5509 5503 rdc_u_info_t *urdc;
5510 5504 rdc_k_info_t *p;
5511 5505 rdc_u_info_t *q;
5512 5506 int rc = 0;
5513 5507 int index;
5514 5508
5515 5509 mutex_enter(&rdc_conf_lock);
5516 5510 index = rdc_lookup_byname(uparms->rdc_set);
5517 5511 if (index >= 0)
5518 5512 krdc = &rdc_k_info[index];
5519 5513 if (index < 0 || (krdc->type_flag & RDC_DISABLEPEND)) {
5520 5514 mutex_exit(&rdc_conf_lock);
5521 5515 spcs_s_add(kstatus, RDC_EALREADY, uparms->rdc_set->primary.file,
5522 5516 uparms->rdc_set->secondary.file);
5523 5517 return (RDC_EALREADY);
5524 5518 }
5525 5519
5526 5520 urdc = &rdc_u_info[index];
5527 5521 set_busy(krdc);
5528 5522 if (krdc->type_flag == 0) {
5529 5523 /* A resume or enable failed */
5530 5524 wakeup_busy(krdc);
5531 5525 mutex_exit(&rdc_conf_lock);
5532 5526 spcs_s_add(kstatus, RDC_EALREADY, uparms->rdc_set->primary.file,
5533 5527 uparms->rdc_set->secondary.file);
5534 5528 return (RDC_EALREADY);
5535 5529 }
5536 5530
5537 5531 mutex_exit(&rdc_conf_lock);
5538 5532
5539 5533 rdc_group_enter(krdc);
5540 5534 if (rdc_check(krdc, uparms->rdc_set)) {
5541 5535 spcs_s_add(kstatus, RDC_EALREADY, uparms->rdc_set->primary.file,
5542 5536 uparms->rdc_set->secondary.file);
5543 5537 rc = RDC_EALREADY;
5544 5538 goto done;
5545 5539 }
5546 5540
5547 5541 if (uparms->rdc_set->maxqfbas > 0) {
5548 5542 urdc->maxqfbas = uparms->rdc_set->maxqfbas;
5549 5543 rdc_write_state(urdc);
5550 5544 for (p = krdc->group_next; p != krdc; p = p->group_next) {
5551 5545 q = &rdc_u_info[p->index];
5552 5546 q->maxqfbas = urdc->maxqfbas;
5553 5547 rdc_write_state(q);
5554 5548 }
5555 5549 }
5556 5550
5557 5551 if (uparms->rdc_set->maxqitems > 0) {
5558 5552 urdc->maxqitems = uparms->rdc_set->maxqitems;
5559 5553 rdc_write_state(urdc);
5560 5554 for (p = krdc->group_next; p != krdc; p = p->group_next) {
5561 5555 q = &rdc_u_info[p->index];
5562 5556 q->maxqitems = urdc->maxqitems;
5563 5557 rdc_write_state(q);
5564 5558 }
5565 5559 }
5566 5560
5567 5561 if (uparms->options & RDC_OPT_SET_QNOBLOCK) {
5568 5562 disk_queue *que;
5569 5563
5570 5564 if (!RDC_IS_DISKQ(krdc->group)) {
5571 5565 spcs_s_add(kstatus, RDC_EQNOQUEUE, urdc->primary.intf,
5572 5566 urdc->primary.file, urdc->secondary.intf,
5573 5567 urdc->secondary.file);
5574 5568 rc = RDC_EQNOQUEUE;
5575 5569 goto done;
5576 5570 }
5577 5571
5578 5572 que = &krdc->group->diskq;
5579 5573 mutex_enter(QLOCK(que));
5580 5574 SET_QSTATE(que, RDC_QNOBLOCK);
5581 5575 /* queue will fail if this fails */
5582 5576 (void) rdc_stamp_diskq(krdc, 0, RDC_GROUP_LOCKED);
5583 5577 mutex_exit(QLOCK(que));
5584 5578
5585 5579 }
5586 5580
5587 5581 if (uparms->options & RDC_OPT_CLR_QNOBLOCK) {
5588 5582 disk_queue *que;
5589 5583
5590 5584 if (!RDC_IS_DISKQ(krdc->group)) {
5591 5585 spcs_s_add(kstatus, RDC_EQNOQUEUE, urdc->primary.intf,
5592 5586 urdc->primary.file, urdc->secondary.intf,
5593 5587 urdc->secondary.file);
5594 5588 rc = RDC_EQNOQUEUE;
5595 5589 goto done;
5596 5590 }
5597 5591 que = &krdc->group->diskq;
5598 5592 mutex_enter(QLOCK(que));
5599 5593 CLR_QSTATE(que, RDC_QNOBLOCK);
5600 5594 /* queue will fail if this fails */
5601 5595 (void) rdc_stamp_diskq(krdc, 0, RDC_GROUP_LOCKED);
5602 5596 mutex_exit(QLOCK(que));
5603 5597
5604 5598 }
5605 5599 if (uparms->rdc_set->asyncthr > 0) {
5606 5600 urdc->asyncthr = uparms->rdc_set->asyncthr;
5607 5601 rdc_write_state(urdc);
5608 5602 for (p = krdc->group_next; p != krdc; p = p->group_next) {
5609 5603 q = &rdc_u_info[p->index];
5610 5604 q->asyncthr = urdc->asyncthr;
5611 5605 rdc_write_state(q);
5612 5606 }
5613 5607 }
5614 5608
5615 5609 if (uparms->rdc_set->autosync >= 0) {
5616 5610 if (uparms->rdc_set->autosync == 0)
5617 5611 urdc->autosync = 0;
5618 5612 else
5619 5613 urdc->autosync = 1;
5620 5614
5621 5615 rdc_write_state(urdc);
5622 5616
5623 5617 /* Changed autosync, so update rest of the group */
5624 5618
5625 5619 for (p = krdc->group_next; p != krdc; p = p->group_next) {
5626 5620 q = &rdc_u_info[p->index];
5627 5621 q->autosync = urdc->autosync;
5628 5622 rdc_write_state(q);
5629 5623 }
5630 5624 }
5631 5625
5632 5626 done:
5633 5627 rdc_group_exit(krdc);
5634 5628
5635 5629 mutex_enter(&rdc_conf_lock);
5636 5630 wakeup_busy(krdc);
5637 5631 mutex_exit(&rdc_conf_lock);
5638 5632
5639 5633 return (rc);
5640 5634 }
5641 5635
5642 5636 /*
5643 5637 * Yet another standard thing that is not standard ...
5644 5638 */
5645 5639 #ifndef offsetof
5646 5640 #define offsetof(s, m) ((size_t)(&((s *)0)->m))
5647 5641 #endif
5648 5642
5649 5643 static int
5650 5644 rdc_status(void *arg, int mode, rdc_config_t *uparms, spcs_s_info_t kstatus)
5651 5645 {
5652 5646 rdc_k_info_t *krdc;
5653 5647 rdc_u_info_t *urdc;
5654 5648 disk_queue *dqp;
5655 5649 int rc = 0;
5656 5650 int index;
5657 5651 char *ptr;
5658 5652 extern int rdc_status_copy32(const void *, void *, size_t, int);
5659 5653
5660 5654 mutex_enter(&rdc_conf_lock);
5661 5655 index = rdc_lookup_byname(uparms->rdc_set);
5662 5656 if (index >= 0)
5663 5657 krdc = &rdc_k_info[index];
5664 5658 if (index < 0 || (krdc->type_flag & RDC_DISABLEPEND)) {
5665 5659 mutex_exit(&rdc_conf_lock);
5666 5660 spcs_s_add(kstatus, RDC_EALREADY, uparms->rdc_set->primary.file,
5667 5661 uparms->rdc_set->secondary.file);
5668 5662 return (RDC_EALREADY);
5669 5663 }
5670 5664
5671 5665 set_busy(krdc);
5672 5666 if (krdc->type_flag == 0) {
5673 5667 /* A resume or enable failed */
5674 5668 wakeup_busy(krdc);
5675 5669 mutex_exit(&rdc_conf_lock);
5676 5670 spcs_s_add(kstatus, RDC_EALREADY, uparms->rdc_set->primary.file,
5677 5671 uparms->rdc_set->secondary.file);
5678 5672 return (RDC_EALREADY);
5679 5673 }
5680 5674
5681 5675 mutex_exit(&rdc_conf_lock);
5682 5676
5683 5677 rdc_group_enter(krdc);
5684 5678 if (rdc_check(krdc, uparms->rdc_set)) {
5685 5679 rdc_group_exit(krdc);
5686 5680 spcs_s_add(kstatus, RDC_EALREADY, uparms->rdc_set->primary.file,
5687 5681 uparms->rdc_set->secondary.file);
5688 5682 rc = RDC_EALREADY;
5689 5683 goto done;
5690 5684 }
5691 5685
5692 5686 urdc = &rdc_u_info[index];
5693 5687
5694 5688 /*
5695 5689 * sneak out qstate in urdc->flags
5696 5690 * this is harmless because it's value is not used
5697 5691 * in urdc->flags. the real qstate is kept in
5698 5692 * group->diskq->disk_hdr.h.state
5699 5693 */
5700 5694 if (RDC_IS_DISKQ(krdc->group)) {
5701 5695 dqp = &krdc->group->diskq;
5702 5696 if (IS_QSTATE(dqp, RDC_QNOBLOCK))
5703 5697 urdc->flags |= RDC_QNOBLOCK;
5704 5698 }
5705 5699
5706 5700 if (ddi_model_convert_from(mode & FMODELS) == DDI_MODEL_ILP32) {
5707 5701 ptr = (char *)arg + offsetof(struct rdc_config32, rdc_set);
5708 5702 rc = rdc_status_copy32(urdc, ptr, sizeof (struct rdc_set32),
5709 5703 mode);
5710 5704 } else {
5711 5705 ptr = (char *)arg + offsetof(struct rdc_config, rdc_set);
5712 5706 rc = ddi_copyout(urdc, ptr, sizeof (struct rdc_set), mode);
5713 5707 }
5714 5708 /* clear out qstate from flags */
5715 5709 urdc->flags &= ~RDC_QNOBLOCK;
5716 5710
5717 5711 if (rc)
5718 5712 rc = EFAULT;
5719 5713
5720 5714 rdc_group_exit(krdc);
5721 5715 done:
5722 5716 mutex_enter(&rdc_conf_lock);
5723 5717 wakeup_busy(krdc);
5724 5718 mutex_exit(&rdc_conf_lock);
5725 5719
5726 5720 return (rc);
5727 5721 }
5728 5722
5729 5723 /*
5730 5724 * Overwrite the bitmap with one supplied by the
5731 5725 * user.
5732 5726 * Copy into all bitmaps that are tracking this volume.
5733 5727 */
5734 5728
5735 5729 int
5736 5730 rdc_bitmapset(int op, char *sechost, char *secdev, void *bmapaddr, int bmapsz,
5737 5731 nsc_off_t off, int mode)
5738 5732 {
5739 5733 int rc;
5740 5734 rdc_k_info_t *krdc;
5741 5735 int *indexvec;
5742 5736 int index;
5743 5737 int indexit;
5744 5738 kmutex_t **grouplocks;
5745 5739 int i;
5746 5740 int groupind;
5747 5741
5748 5742 if (off % FBA_SIZE(1)) {
5749 5743 /* Must be modulo FBA */
5750 5744 cmn_err(CE_WARN, "!bitmapset: Offset is not on an FBA "
5751 5745 "boundary %llu", (unsigned long long)off);
5752 5746 return (EINVAL);
5753 5747 }
5754 5748 if (bmapsz % FBA_SIZE(1)) {
5755 5749 /* Must be modulo FBA */
5756 5750 cmn_err(CE_WARN, "!bitmapset: Size is not on an FBA "
5757 5751 "boundary %d", bmapsz);
5758 5752 return (EINVAL);
5759 5753 }
5760 5754
5761 5755 mutex_enter(&rdc_conf_lock);
5762 5756 index = rdc_lookup_byhostdev(sechost, secdev);
5763 5757 if (index >= 0) {
5764 5758 krdc = &rdc_k_info[index];
5765 5759 }
5766 5760 if (index < 0 || (krdc->type_flag & RDC_DISABLEPEND)) {
5767 5761 rc = ENODEV;
5768 5762 mutex_exit(&rdc_conf_lock);
5769 5763 return (rc);
5770 5764 }
5771 5765 indexvec = kmem_alloc(rdc_max_sets * sizeof (int), KM_SLEEP);
5772 5766 grouplocks = kmem_alloc(rdc_max_sets * sizeof (kmutex_t *), KM_SLEEP);
5773 5767
5774 5768 /*
5775 5769 * I now have this set, and I want to take the group
5776 5770 * lock on it, and all the group locks of all the
5777 5771 * sets on the many and multi-hop links.
5778 5772 * I have to take the many lock while traversing the
5779 5773 * many/multi links.
5780 5774 * I think I also need to set the busy count on this
5781 5775 * set, otherwise when I drop the conf_lock, what
5782 5776 * will stop some other process from coming in and
5783 5777 * issuing a disable?
5784 5778 */
5785 5779 set_busy(krdc);
5786 5780 mutex_exit(&rdc_conf_lock);
5787 5781
5788 5782 retrylock:
5789 5783 groupind = 0;
5790 5784 indexit = 0;
5791 5785 rdc_many_enter(krdc);
5792 5786 /*
5793 5787 * Take this initial sets group lock first.
5794 5788 */
5795 5789 if (!mutex_tryenter(&krdc->group->lock)) {
5796 5790 rdc_many_exit(krdc);
5797 5791 goto retrylock;
5798 5792 }
5799 5793
5800 5794 grouplocks[groupind] = &krdc->group->lock;
5801 5795 groupind++;
5802 5796
5803 5797 rc = rdc_checkforbitmap(index, off + bmapsz);
5804 5798 if (rc) {
5805 5799 goto done;
5806 5800 }
5807 5801 indexvec[indexit] = index;
5808 5802 indexit++;
5809 5803 if (IS_MANY(krdc)) {
5810 5804 rdc_k_info_t *ktmp;
5811 5805
5812 5806 for (ktmp = krdc->many_next; ktmp != krdc;
5813 5807 ktmp = ktmp->many_next) {
5814 5808 /*
5815 5809 * attempt to take the group lock,
5816 5810 * if we don't already have it.
5817 5811 */
5818 5812 if (ktmp->group == NULL) {
5819 5813 rc = ENODEV;
5820 5814 goto done;
5821 5815 }
5822 5816 for (i = 0; i < groupind; i++) {
5823 5817 if (grouplocks[i] == &ktmp->group->lock)
5824 5818 /* already have the group lock */
5825 5819 break;
5826 5820 }
5827 5821 /*
5828 5822 * didn't find our lock in our collection,
5829 5823 * attempt to take group lock.
5830 5824 */
5831 5825 if (i >= groupind) {
5832 5826 if (!mutex_tryenter(&ktmp->group->lock)) {
5833 5827 for (i = 0; i < groupind; i++) {
5834 5828 mutex_exit(grouplocks[i]);
5835 5829 }
5836 5830 rdc_many_exit(krdc);
5837 5831 goto retrylock;
5838 5832 }
5839 5833 grouplocks[groupind] = &ktmp->group->lock;
5840 5834 groupind++;
5841 5835 }
5842 5836 rc = rdc_checkforbitmap(ktmp->index, off + bmapsz);
5843 5837 if (rc == 0) {
5844 5838 indexvec[indexit] = ktmp->index;
5845 5839 indexit++;
5846 5840 } else {
5847 5841 goto done;
5848 5842 }
5849 5843 }
5850 5844 }
5851 5845 if (IS_MULTI(krdc)) {
5852 5846 rdc_k_info_t *kmulti = krdc->multi_next;
5853 5847
5854 5848 if (kmulti->group == NULL) {
5855 5849 rc = ENODEV;
5856 5850 goto done;
5857 5851 }
5858 5852 /*
5859 5853 * This can't be in our group already.
5860 5854 */
5861 5855 if (!mutex_tryenter(&kmulti->group->lock)) {
5862 5856 for (i = 0; i < groupind; i++) {
5863 5857 mutex_exit(grouplocks[i]);
5864 5858 }
5865 5859 rdc_many_exit(krdc);
5866 5860 goto retrylock;
5867 5861 }
5868 5862 grouplocks[groupind] = &kmulti->group->lock;
5869 5863 groupind++;
5870 5864
5871 5865 rc = rdc_checkforbitmap(kmulti->index, off + bmapsz);
5872 5866 if (rc == 0) {
5873 5867 indexvec[indexit] = kmulti->index;
5874 5868 indexit++;
5875 5869 } else {
5876 5870 goto done;
5877 5871 }
5878 5872 }
5879 5873 rc = rdc_installbitmap(op, bmapaddr, bmapsz, off, mode, indexvec,
5880 5874 indexit);
5881 5875 done:
5882 5876 for (i = 0; i < groupind; i++) {
5883 5877 mutex_exit(grouplocks[i]);
5884 5878 }
5885 5879 rdc_many_exit(krdc);
5886 5880 mutex_enter(&rdc_conf_lock);
5887 5881 wakeup_busy(krdc);
5888 5882 mutex_exit(&rdc_conf_lock);
5889 5883 kmem_free(indexvec, rdc_max_sets * sizeof (int));
5890 5884 kmem_free(grouplocks, rdc_max_sets * sizeof (kmutex_t *));
5891 5885 return (rc);
5892 5886 }
5893 5887
5894 5888 static int
5895 5889 rdc_checkforbitmap(int index, nsc_off_t limit)
5896 5890 {
5897 5891 rdc_k_info_t *krdc;
5898 5892 rdc_u_info_t *urdc;
5899 5893
5900 5894 krdc = &rdc_k_info[index];
5901 5895 urdc = &rdc_u_info[index];
5902 5896
5903 5897 if (!IS_ENABLED(urdc)) {
5904 5898 return (EIO);
5905 5899 }
5906 5900 if (!(rdc_get_vflags(urdc) & RDC_LOGGING)) {
5907 5901 return (ENXIO);
5908 5902 }
5909 5903 if (krdc->dcio_bitmap == NULL) {
5910 5904 cmn_err(CE_WARN, "!checkforbitmap: No bitmap for set (%s:%s)",
5911 5905 urdc->secondary.intf, urdc->secondary.file);
5912 5906 return (ENOENT);
5913 5907 }
5914 5908 if (limit > krdc->bitmap_size) {
5915 5909 cmn_err(CE_WARN, "!checkbitmap: Bitmap exceeded, "
5916 5910 "incore %" NSC_SZFMT " user supplied %" NSC_SZFMT
5917 5911 " for set (%s:%s)", krdc->bitmap_size,
5918 5912 limit, urdc->secondary.intf, urdc->secondary.file);
5919 5913 return (ENOSPC);
5920 5914 }
5921 5915 return (0);
5922 5916 }
5923 5917
5924 5918
5925 5919
5926 5920 /*
5927 5921 * Copy the user supplied bitmap to this set.
5928 5922 */
5929 5923 static int
5930 5924 rdc_installbitmap(int op, void *bmapaddr, int bmapsz,
5931 5925 nsc_off_t off, int mode, int *vec, int veccnt)
5932 5926 {
5933 5927 int rc;
5934 5928 nsc_off_t sfba;
5935 5929 nsc_off_t efba;
5936 5930 nsc_off_t fba;
5937 5931 void *ormem = NULL;
5938 5932 int len;
5939 5933 int left;
5940 5934 int copied;
5941 5935 int index;
5942 5936 rdc_k_info_t *krdc;
5943 5937 rdc_u_info_t *urdc;
5944 5938
5945 5939 rc = 0;
5946 5940 ormem = kmem_alloc(RDC_MAXDATA, KM_SLEEP);
5947 5941 left = bmapsz;
5948 5942 copied = 0;
5949 5943 while (left > 0) {
5950 5944 if (left > RDC_MAXDATA) {
5951 5945 len = RDC_MAXDATA;
5952 5946 } else {
5953 5947 len = left;
5954 5948 }
5955 5949 if (ddi_copyin((char *)bmapaddr + copied, ormem,
5956 5950 len, mode)) {
5957 5951 cmn_err(CE_WARN, "!installbitmap: Copyin failed");
5958 5952 rc = EFAULT;
5959 5953 goto out;
5960 5954 }
5961 5955 sfba = FBA_NUM(off + copied);
5962 5956 efba = FBA_NUM(off + copied + len);
5963 5957 for (index = 0; index < veccnt; index++) {
5964 5958 krdc = &rdc_k_info[vec[index]];
5965 5959 urdc = &rdc_u_info[vec[index]];
5966 5960
5967 5961 mutex_enter(&krdc->bmapmutex);
5968 5962 if (op == RDC_BITMAPSET) {
5969 5963 bcopy(ormem, krdc->dcio_bitmap + off + copied,
5970 5964 len);
5971 5965 } else {
5972 5966 rdc_lor(ormem,
5973 5967 krdc->dcio_bitmap + off + copied, len);
5974 5968 }
5975 5969 /*
5976 5970 * Maybe this should be just done once outside of
5977 5971 * the the loop? (Less work, but leaves a window
5978 5972 * where the bits_set doesn't match the bitmap).
5979 5973 */
5980 5974 urdc->bits_set = RDC_COUNT_BITMAP(krdc);
5981 5975 mutex_exit(&krdc->bmapmutex);
5982 5976 if (krdc->bitmap_write > 0) {
5983 5977 for (fba = sfba; fba < efba; fba++) {
5984 5978 if (rc = rdc_write_bitmap_fba(krdc,
5985 5979 fba)) {
5986 5980
5987 5981 cmn_err(CE_WARN,
5988 5982 "!installbitmap: "
5989 5983 "write_bitmap_fba failed "
5990 5984 "on fba number %" NSC_SZFMT
5991 5985 " set %s:%s", fba,
5992 5986 urdc->secondary.intf,
5993 5987 urdc->secondary.file);
5994 5988 goto out;
5995 5989 }
5996 5990 }
5997 5991 }
5998 5992 }
5999 5993 copied += len;
6000 5994 left -= len;
6001 5995 }
6002 5996 out:
6003 5997 kmem_free(ormem, RDC_MAXDATA);
6004 5998 return (rc);
6005 5999 }
6006 6000
6007 6001 /*
6008 6002 * _rdc_config
6009 6003 */
6010 6004 int
6011 6005 _rdc_config(void *arg, int mode, spcs_s_info_t kstatus, int *rvp)
6012 6006 {
6013 6007 int rc = 0;
6014 6008 struct netbuf fsvaddr, tsvaddr;
6015 6009 struct knetconfig *knconf;
6016 6010 char *p = NULL, *pf = NULL;
6017 6011 struct rdc_config *uap;
6018 6012 STRUCT_DECL(knetconfig, knconf_tmp);
6019 6013 STRUCT_DECL(rdc_config, uparms);
6020 6014 int enable, disable;
6021 6015 int cmd;
6022 6016
6023 6017
6024 6018 STRUCT_HANDLE(rdc_set, rs);
6025 6019 STRUCT_HANDLE(rdc_addr, pa);
6026 6020 STRUCT_HANDLE(rdc_addr, sa);
6027 6021
6028 6022 STRUCT_INIT(uparms, mode);
6029 6023
6030 6024 bzero(STRUCT_BUF(uparms), STRUCT_SIZE(uparms));
6031 6025 bzero(&fsvaddr, sizeof (fsvaddr));
6032 6026 bzero(&tsvaddr, sizeof (tsvaddr));
6033 6027
6034 6028 knconf = NULL;
6035 6029
6036 6030 if (ddi_copyin(arg, STRUCT_BUF(uparms), STRUCT_SIZE(uparms), mode)) {
6037 6031 return (EFAULT);
6038 6032 }
6039 6033
6040 6034 STRUCT_SET_HANDLE(rs, mode, STRUCT_FGETP(uparms, rdc_set));
6041 6035 STRUCT_SET_HANDLE(pa, mode, STRUCT_FADDR(rs, primary));
6042 6036 STRUCT_SET_HANDLE(sa, mode, STRUCT_FADDR(rs, secondary));
6043 6037 cmd = STRUCT_FGET(uparms, command);
6044 6038 if (cmd == RDC_CMD_ENABLE || cmd == RDC_CMD_RESUME) {
6045 6039 fsvaddr.len = STRUCT_FGET(pa, addr.len);
6046 6040 fsvaddr.maxlen = STRUCT_FGET(pa, addr.maxlen);
6047 6041 fsvaddr.buf = kmem_zalloc(fsvaddr.len, KM_SLEEP);
6048 6042
6049 6043 if (ddi_copyin(STRUCT_FGETP(pa, addr.buf),
6050 6044 fsvaddr.buf, fsvaddr.len, mode)) {
6051 6045 kmem_free(fsvaddr.buf, fsvaddr.len);
6052 6046 #ifdef DEBUG
6053 6047 cmn_err(CE_WARN, "!copyin failed primary.addr 2");
6054 6048 #endif
6055 6049 return (EFAULT);
6056 6050 }
6057 6051
6058 6052
6059 6053 tsvaddr.len = STRUCT_FGET(sa, addr.len);
6060 6054 tsvaddr.maxlen = STRUCT_FGET(sa, addr.maxlen);
6061 6055 tsvaddr.buf = kmem_zalloc(tsvaddr.len, KM_SLEEP);
6062 6056
6063 6057 if (ddi_copyin(STRUCT_FGETP(sa, addr.buf),
6064 6058 tsvaddr.buf, tsvaddr.len, mode)) {
6065 6059 #ifdef DEBUG
6066 6060 cmn_err(CE_WARN, "!copyin failed secondary addr");
6067 6061 #endif
6068 6062 kmem_free(fsvaddr.buf, fsvaddr.len);
6069 6063 kmem_free(tsvaddr.buf, tsvaddr.len);
6070 6064 return (EFAULT);
6071 6065 }
6072 6066 } else {
6073 6067 fsvaddr.len = 0;
6074 6068 fsvaddr.maxlen = 0;
6075 6069 fsvaddr.buf = kmem_zalloc(fsvaddr.len, KM_SLEEP);
6076 6070 tsvaddr.len = 0;
6077 6071 tsvaddr.maxlen = 0;
6078 6072 tsvaddr.buf = kmem_zalloc(tsvaddr.len, KM_SLEEP);
6079 6073 }
6080 6074
6081 6075 if (STRUCT_FGETP(uparms, rdc_set->netconfig) != NULL) {
6082 6076 STRUCT_INIT(knconf_tmp, mode);
6083 6077 knconf = kmem_zalloc(sizeof (*knconf), KM_SLEEP);
6084 6078 if (ddi_copyin(STRUCT_FGETP(uparms, rdc_set->netconfig),
6085 6079 STRUCT_BUF(knconf_tmp), STRUCT_SIZE(knconf_tmp), mode)) {
6086 6080 #ifdef DEBUG
6087 6081 cmn_err(CE_WARN, "!copyin failed netconfig");
6088 6082 #endif
6089 6083 kmem_free(fsvaddr.buf, fsvaddr.len);
6090 6084 kmem_free(tsvaddr.buf, tsvaddr.len);
6091 6085 kmem_free(knconf, sizeof (*knconf));
6092 6086 return (EFAULT);
6093 6087 }
6094 6088
6095 6089 knconf->knc_semantics = STRUCT_FGET(knconf_tmp, knc_semantics);
6096 6090 knconf->knc_protofmly = STRUCT_FGETP(knconf_tmp, knc_protofmly);
6097 6091 knconf->knc_proto = STRUCT_FGETP(knconf_tmp, knc_proto);
6098 6092
6099 6093 #ifndef _SunOS_5_6
6100 6094 if ((mode & DATAMODEL_LP64) == 0) {
6101 6095 knconf->knc_rdev =
6102 6096 expldev(STRUCT_FGET(knconf_tmp, knc_rdev));
6103 6097 } else {
6104 6098 #endif
6105 6099 knconf->knc_rdev = STRUCT_FGET(knconf_tmp, knc_rdev);
6106 6100 #ifndef _SunOS_5_6
6107 6101 }
6108 6102 #endif
6109 6103
6110 6104 pf = kmem_alloc(KNC_STRSIZE, KM_SLEEP);
6111 6105 p = kmem_alloc(KNC_STRSIZE, KM_SLEEP);
6112 6106 rc = ddi_copyin(knconf->knc_protofmly, pf, KNC_STRSIZE, mode);
6113 6107 if (rc) {
6114 6108 #ifdef DEBUG
6115 6109 cmn_err(CE_WARN, "!copyin failed parms protofmly");
6116 6110 #endif
6117 6111 rc = EFAULT;
6118 6112 goto out;
6119 6113 }
6120 6114 rc = ddi_copyin(knconf->knc_proto, p, KNC_STRSIZE, mode);
6121 6115 if (rc) {
6122 6116 #ifdef DEBUG
6123 6117 cmn_err(CE_WARN, "!copyin failed parms proto");
6124 6118 #endif
6125 6119 rc = EFAULT;
6126 6120 goto out;
6127 6121 }
6128 6122 knconf->knc_protofmly = pf;
6129 6123 knconf->knc_proto = p;
6130 6124 } /* !NULL netconfig */
6131 6125
6132 6126 uap = kmem_alloc(sizeof (*uap), KM_SLEEP);
6133 6127
6134 6128 /* copy relevant parts of rdc_config to uap field by field */
6135 6129
6136 6130 (void) strncpy(uap->rdc_set[0].primary.intf, STRUCT_FGETP(pa, intf),
6137 6131 MAX_RDC_HOST_SIZE);
6138 6132 (void) strncpy(uap->rdc_set[0].primary.file, STRUCT_FGETP(pa, file),
6139 6133 NSC_MAXPATH);
6140 6134 (void) strncpy(uap->rdc_set[0].primary.bitmap, STRUCT_FGETP(pa, bitmap),
6141 6135 NSC_MAXPATH);
6142 6136 uap->rdc_set[0].netconfig = knconf;
6143 6137 uap->rdc_set[0].flags = STRUCT_FGET(uparms, rdc_set->flags);
6144 6138 uap->rdc_set[0].index = STRUCT_FGET(uparms, rdc_set->index);
6145 6139 uap->rdc_set[0].setid = STRUCT_FGET(uparms, rdc_set->setid);
6146 6140 uap->rdc_set[0].sync_pos = STRUCT_FGET(uparms, rdc_set->sync_pos);
6147 6141 uap->rdc_set[0].volume_size = STRUCT_FGET(uparms, rdc_set->volume_size);
6148 6142 uap->rdc_set[0].bits_set = STRUCT_FGET(uparms, rdc_set->bits_set);
6149 6143 uap->rdc_set[0].autosync = STRUCT_FGET(uparms, rdc_set->autosync);
6150 6144 uap->rdc_set[0].maxqfbas = STRUCT_FGET(uparms, rdc_set->maxqfbas);
6151 6145 uap->rdc_set[0].maxqitems = STRUCT_FGET(uparms, rdc_set->maxqitems);
6152 6146 uap->rdc_set[0].asyncthr = STRUCT_FGET(uparms, rdc_set->asyncthr);
6153 6147 uap->rdc_set[0].syshostid = STRUCT_FGET(uparms, rdc_set->syshostid);
6154 6148 uap->rdc_set[0].primary.addr = fsvaddr; /* struct copy */
6155 6149 uap->rdc_set[0].secondary.addr = tsvaddr; /* struct copy */
6156 6150
6157 6151 (void) strncpy(uap->rdc_set[0].secondary.intf, STRUCT_FGETP(sa, intf),
6158 6152 MAX_RDC_HOST_SIZE);
6159 6153 (void) strncpy(uap->rdc_set[0].secondary.file, STRUCT_FGETP(sa, file),
6160 6154 NSC_MAXPATH);
6161 6155 (void) strncpy(uap->rdc_set[0].secondary.bitmap,
6162 6156 STRUCT_FGETP(sa, bitmap), NSC_MAXPATH);
6163 6157
6164 6158 (void) strncpy(uap->rdc_set[0].direct_file,
6165 6159 STRUCT_FGETP(rs, direct_file), NSC_MAXPATH);
6166 6160
6167 6161 (void) strncpy(uap->rdc_set[0].group_name, STRUCT_FGETP(rs, group_name),
6168 6162 NSC_MAXPATH);
6169 6163
6170 6164 (void) strncpy(uap->rdc_set[0].disk_queue, STRUCT_FGETP(rs, disk_queue),
6171 6165 NSC_MAXPATH);
6172 6166
6173 6167 uap->command = STRUCT_FGET(uparms, command);
6174 6168 uap->options = STRUCT_FGET(uparms, options);
6175 6169
6176 6170 enable = (uap->command == RDC_CMD_ENABLE ||
6177 6171 uap->command == RDC_CMD_RESUME);
6178 6172 disable = (uap->command == RDC_CMD_DISABLE ||
6179 6173 uap->command == RDC_CMD_SUSPEND);
6180 6174
6181 6175 /*
6182 6176 * Initialise the threadset if it has not already been done.
6183 6177 *
6184 6178 * This has to be done now, not in rdcattach(), because
6185 6179 * rdcattach() can be called before nskernd is running (eg.
6186 6180 * boot -r) in which case the nst_init() would fail and hence
6187 6181 * the attach would fail.
6188 6182 *
6189 6183 * Threadset creation is locked by the rdc_conf_lock,
6190 6184 * destruction is inherently single threaded as it is done in
6191 6185 * _rdc_unload() which must be the last thing performed by
6192 6186 * rdcdetach().
6193 6187 */
6194 6188
6195 6189 if (enable && _rdc_ioset == NULL) {
6196 6190 mutex_enter(&rdc_conf_lock);
6197 6191
6198 6192 if (_rdc_ioset == NULL) {
6199 6193 rc = rdc_thread_configure();
6200 6194 }
6201 6195
6202 6196 mutex_exit(&rdc_conf_lock);
6203 6197
6204 6198 if (rc || _rdc_ioset == NULL) {
6205 6199 spcs_s_add(kstatus, RDC_ENOTHREADS);
6206 6200 rc = RDC_ENOTHREADS;
6207 6201 goto outuap;
6208 6202 }
6209 6203 }
6210 6204 switch (uap->command) {
6211 6205 case RDC_CMD_ENABLE:
6212 6206 rc = rdc_enable(uap, kstatus);
6213 6207 break;
6214 6208 case RDC_CMD_DISABLE:
6215 6209 rc = rdc_disable(uap, kstatus);
6216 6210 break;
6217 6211 case RDC_CMD_COPY:
6218 6212 rc = rdc_sync(uap, kstatus);
6219 6213 break;
6220 6214 case RDC_CMD_LOG:
6221 6215 rc = rdc_log(uap, kstatus);
6222 6216 break;
6223 6217 case RDC_CMD_RECONFIG:
6224 6218 rc = rdc_reconfig(uap, kstatus);
6225 6219 break;
6226 6220 case RDC_CMD_RESUME:
6227 6221 rc = rdc_resume(uap, kstatus);
6228 6222 break;
6229 6223 case RDC_CMD_SUSPEND:
6230 6224 rc = rdc_suspend(uap, kstatus);
6231 6225 break;
6232 6226 case RDC_CMD_TUNABLE:
6233 6227 rc = rdc_tunable(uap, kstatus);
6234 6228 break;
6235 6229 case RDC_CMD_WAIT:
6236 6230 rc = rdc_wait(uap, kstatus);
6237 6231 break;
6238 6232 case RDC_CMD_HEALTH:
6239 6233 rc = rdc_health(uap, kstatus, rvp);
6240 6234 break;
6241 6235 case RDC_CMD_STATUS:
6242 6236 rc = rdc_status(arg, mode, uap, kstatus);
6243 6237 break;
6244 6238 case RDC_CMD_RESET:
6245 6239 rc = rdc_reset(uap, kstatus);
6246 6240 break;
6247 6241 case RDC_CMD_ADDQ:
6248 6242 rc = rdc_add_diskq(uap, kstatus);
6249 6243 break;
6250 6244 case RDC_CMD_REMQ:
6251 6245 if ((rc = rdc_rem_diskq(uap, kstatus)) != 0)
6252 6246 break;
6253 6247 /* FALLTHRU */
6254 6248 case RDC_CMD_KILLQ:
6255 6249 rc = rdc_kill_diskq(uap, kstatus);
6256 6250 break;
6257 6251 case RDC_CMD_INITQ:
6258 6252 rc = rdc_init_diskq(uap, kstatus);
6259 6253 break;
6260 6254
6261 6255 default:
6262 6256 rc = EINVAL;
6263 6257 break;
6264 6258 }
6265 6259
6266 6260 /*
6267 6261 * Tune the threadset size after a successful rdc_set addition
6268 6262 * or removal.
6269 6263 */
6270 6264 if ((enable || disable) && rc == 0) {
6271 6265 mutex_enter(&rdc_conf_lock);
6272 6266 rdc_thread_tune(enable ? 2 : -2);
6273 6267 mutex_exit(&rdc_conf_lock);
6274 6268 }
6275 6269 outuap:
6276 6270 kmem_free(uap, sizeof (*uap));
6277 6271 out:
6278 6272 kmem_free(fsvaddr.buf, fsvaddr.len);
6279 6273 kmem_free(tsvaddr.buf, tsvaddr.len);
6280 6274 if (pf)
6281 6275 kmem_free(pf, KNC_STRSIZE);
6282 6276 if (p)
6283 6277 kmem_free(p, KNC_STRSIZE);
6284 6278 if (knconf)
6285 6279 kmem_free(knconf, sizeof (*knconf));
6286 6280 return (rc);
6287 6281 }
6288 6282
6289 6283
6290 6284 /*
6291 6285 * krdc->group->lock held on entry to halt_sync()
6292 6286 */
6293 6287 static void
6294 6288 halt_sync(rdc_k_info_t *krdc)
6295 6289 {
6296 6290 rdc_u_info_t *urdc = &rdc_u_info[krdc->index];
6297 6291
6298 6292 ASSERT(MUTEX_HELD(&krdc->group->lock));
6299 6293 ASSERT(IS_ENABLED(urdc));
6300 6294
6301 6295 /*
6302 6296 * If a sync is in progress, halt it
6303 6297 */
6304 6298 if ((rdc_get_vflags(urdc) & RDC_PRIMARY) &&
6305 6299 (krdc->aux_state & RDC_AUXSYNCIP)) {
6306 6300 krdc->disk_status = 1;
6307 6301
6308 6302 while (krdc->disk_status == 1) {
6309 6303 if (cv_wait_sig(&krdc->haltcv, &krdc->group->lock) == 0)
6310 6304 break;
6311 6305 }
6312 6306 }
6313 6307 }
6314 6308
6315 6309 /*
6316 6310 * return size in blocks
6317 6311 */
6318 6312 uint64_t
6319 6313 mirror_getsize(int index)
6320 6314 {
6321 6315 rdc_k_info_t *krdc;
6322 6316 rdc_u_info_t *urdc;
6323 6317 int rc, rs;
6324 6318 nsc_size_t size;
6325 6319
6326 6320 krdc = &rdc_k_info[index];
6327 6321 urdc = &rdc_u_info[index];
6328 6322
6329 6323 rc = _rdc_rsrv_devs(krdc, RDC_RAW, RDC_INTERNAL);
6330 6324 rs = nsc_partsize(RDC_U_FD(krdc), &size);
6331 6325 urdc->volume_size = size;
6332 6326 if (rc == 0)
6333 6327 _rdc_rlse_devs(krdc, RDC_RAW);
6334 6328
6335 6329 return (rs == 0 ? urdc->volume_size : 0);
6336 6330 }
6337 6331
6338 6332
6339 6333 /*
6340 6334 * Create a new dataset for this transfer, and add it to the list
6341 6335 * of datasets via the net_dataset pointer in the krdc.
6342 6336 */
6343 6337 rdc_net_dataset_t *
6344 6338 rdc_net_add_set(int index)
6345 6339 {
6346 6340 rdc_k_info_t *krdc;
6347 6341 rdc_u_info_t *urdc;
6348 6342 rdc_net_dataset_t *dset;
6349 6343
6350 6344 if (index >= rdc_max_sets) {
6351 6345 cmn_err(CE_NOTE, "!rdc_net_add_set: bad index %d", index);
6352 6346 return (NULL);
6353 6347 }
6354 6348 krdc = &rdc_k_info[index];
6355 6349 urdc = &rdc_u_info[index];
6356 6350
6357 6351 dset = kmem_alloc(sizeof (*dset), KM_NOSLEEP);
6358 6352 if (dset == NULL) {
6359 6353 cmn_err(CE_NOTE, "!rdc_net_add_set: kmem_alloc failed");
6360 6354 return (NULL);
6361 6355 }
6362 6356 RDC_DSMEMUSE(sizeof (*dset));
6363 6357 dset->inuse = 1;
6364 6358 dset->nitems = 0;
6365 6359 dset->delpend = 0;
6366 6360 dset->head = NULL;
6367 6361 dset->tail = NULL;
6368 6362 mutex_enter(&krdc->dc_sleep);
6369 6363
6370 6364 if (!IS_ENABLED(urdc)) {
6371 6365 /* raced with a disable command */
6372 6366 kmem_free(dset, sizeof (*dset));
6373 6367 RDC_DSMEMUSE(-sizeof (*dset));
6374 6368 mutex_exit(&krdc->dc_sleep);
6375 6369 return (NULL);
6376 6370 }
6377 6371 /*
6378 6372 * Shared the id generator, (and the locks).
6379 6373 */
6380 6374 mutex_enter(&rdc_net_hnd_id_lock);
6381 6375 if (++rdc_net_hnd_id == 0)
6382 6376 rdc_net_hnd_id = 1;
6383 6377 dset->id = rdc_net_hnd_id;
6384 6378 mutex_exit(&rdc_net_hnd_id_lock);
6385 6379
6386 6380 #ifdef DEBUG
6387 6381 if (krdc->net_dataset != NULL) {
6388 6382 rdc_net_dataset_t *dset2;
6389 6383 for (dset2 = krdc->net_dataset; dset2; dset2 = dset2->next) {
6390 6384 if (dset2->id == dset->id) {
6391 6385 cmn_err(CE_PANIC,
6392 6386 "rdc_net_add_set duplicate id %p:%d %p:%d",
6393 6387 (void *)dset, dset->id,
6394 6388 (void *)dset2, dset2->id);
6395 6389 }
6396 6390 }
6397 6391 }
6398 6392 #endif
6399 6393 dset->next = krdc->net_dataset;
6400 6394 krdc->net_dataset = dset;
6401 6395 mutex_exit(&krdc->dc_sleep);
6402 6396
6403 6397 return (dset);
6404 6398 }
6405 6399
6406 6400 /*
6407 6401 * fetch the previously added dataset.
6408 6402 */
6409 6403 rdc_net_dataset_t *
6410 6404 rdc_net_get_set(int index, int id)
6411 6405 {
6412 6406 rdc_k_info_t *krdc;
6413 6407 rdc_net_dataset_t *dset;
6414 6408
6415 6409 if (index >= rdc_max_sets) {
6416 6410 cmn_err(CE_NOTE, "!rdc_net_get_set: bad index %d", index);
6417 6411 return (NULL);
6418 6412 }
6419 6413 krdc = &rdc_k_info[index];
6420 6414
6421 6415 mutex_enter(&krdc->dc_sleep);
6422 6416
6423 6417 dset = krdc->net_dataset;
6424 6418 while (dset && (dset->id != id))
6425 6419 dset = dset->next;
6426 6420
6427 6421 if (dset) {
6428 6422 dset->inuse++;
6429 6423 }
6430 6424
6431 6425 mutex_exit(&krdc->dc_sleep);
6432 6426 return (dset);
6433 6427 }
6434 6428
6435 6429 /*
6436 6430 * Decrement the inuse counter. Data may be freed.
6437 6431 */
6438 6432 void
6439 6433 rdc_net_put_set(int index, rdc_net_dataset_t *dset)
6440 6434 {
6441 6435 rdc_k_info_t *krdc;
6442 6436
6443 6437 if (index >= rdc_max_sets) {
6444 6438 cmn_err(CE_NOTE, "!rdc_net_put_set: bad index %d", index);
6445 6439 return;
6446 6440 }
6447 6441 krdc = &rdc_k_info[index];
6448 6442
6449 6443 mutex_enter(&krdc->dc_sleep);
6450 6444 dset->inuse--;
6451 6445 ASSERT(dset->inuse >= 0);
6452 6446 if ((dset->inuse == 0) && (dset->delpend)) {
6453 6447 rdc_net_free_set(krdc, dset);
6454 6448 }
6455 6449 mutex_exit(&krdc->dc_sleep);
6456 6450 }
6457 6451
6458 6452 /*
6459 6453 * Mark that we are finished with this set. Decrement inuse
6460 6454 * counter, mark as needing deletion, and
6461 6455 * remove from linked list.
6462 6456 */
6463 6457 void
6464 6458 rdc_net_del_set(int index, rdc_net_dataset_t *dset)
6465 6459 {
6466 6460 rdc_k_info_t *krdc;
6467 6461
6468 6462 if (index >= rdc_max_sets) {
6469 6463 cmn_err(CE_NOTE, "!rdc_net_del_set: bad index %d", index);
6470 6464 return;
6471 6465 }
6472 6466 krdc = &rdc_k_info[index];
6473 6467
6474 6468 mutex_enter(&krdc->dc_sleep);
6475 6469 dset->inuse--;
6476 6470 ASSERT(dset->inuse >= 0);
6477 6471 dset->delpend = 1;
6478 6472 if (dset->inuse == 0) {
6479 6473 rdc_net_free_set(krdc, dset);
6480 6474 }
6481 6475 mutex_exit(&krdc->dc_sleep);
6482 6476 }
6483 6477
6484 6478 /*
6485 6479 * free all the memory associated with this set, and remove from
6486 6480 * list.
6487 6481 * Enters and exits with dc_sleep lock held.
6488 6482 */
6489 6483
6490 6484 void
6491 6485 rdc_net_free_set(rdc_k_info_t *krdc, rdc_net_dataset_t *dset)
6492 6486 {
6493 6487 rdc_net_dataset_t **dsetp;
6494 6488 #ifdef DEBUG
6495 6489 int found = 0;
6496 6490 #endif
6497 6491
6498 6492 ASSERT(MUTEX_HELD(&krdc->dc_sleep));
6499 6493 ASSERT(dset);
6500 6494 for (dsetp = &krdc->net_dataset; *dsetp; dsetp = &((*dsetp)->next)) {
6501 6495 if (*dsetp == dset) {
6502 6496 *dsetp = dset->next;
6503 6497 #ifdef DEBUG
6504 6498 found = 1;
6505 6499 #endif
6506 6500 break;
6507 6501 }
6508 6502 }
6509 6503
6510 6504 #ifdef DEBUG
6511 6505 if (found == 0) {
6512 6506 cmn_err(CE_WARN, "!rdc_net_free_set: Unable to find "
6513 6507 "dataset 0x%p in krdc list", (void *)dset);
6514 6508 }
6515 6509 #endif
6516 6510 /*
6517 6511 * unlinked from list. Free all the data
6518 6512 */
6519 6513 rdc_ditemsfree(dset);
6520 6514 /*
6521 6515 * free my core.
6522 6516 */
6523 6517 kmem_free(dset, sizeof (*dset));
6524 6518 RDC_DSMEMUSE(-sizeof (*dset));
6525 6519 }
6526 6520
6527 6521
6528 6522 /*
6529 6523 * Free all the dataitems and the data it points to.
6530 6524 */
6531 6525 static void
6532 6526 rdc_ditemsfree(rdc_net_dataset_t *dset)
6533 6527 {
6534 6528 rdc_net_dataitem_t *ditem;
6535 6529 rdc_net_dataitem_t *nitem;
6536 6530
6537 6531 ditem = dset->head;
6538 6532
6539 6533 while (ditem) {
6540 6534 nitem = ditem->next;
6541 6535 kmem_free(ditem->dptr, ditem->mlen);
6542 6536 RDC_DSMEMUSE(-ditem->mlen);
6543 6537 dset->nitems--;
6544 6538 kmem_free(ditem, sizeof (*ditem));
6545 6539 RDC_DSMEMUSE(-sizeof (*ditem));
6546 6540 ditem = nitem;
6547 6541 }
6548 6542 ASSERT(dset->nitems == 0);
6549 6543 }
6550 6544
6551 6545 /*
6552 6546 * allocate and initialize a rdc_aio_t
6553 6547 */
6554 6548 rdc_aio_t *
6555 6549 rdc_aio_tbuf_get(void *n, void *h, int pos, int len, int flag, int index, int s)
6556 6550 {
6557 6551 rdc_aio_t *p;
6558 6552
6559 6553 p = kmem_zalloc(sizeof (rdc_aio_t), KM_NOSLEEP);
6560 6554 if (p == NULL) {
6561 6555 #ifdef DEBUG
6562 6556 cmn_err(CE_NOTE, "!_rdcaiotbufget: kmem_alloc failed bp aio");
6563 6557 #endif
6564 6558 return (NULL);
6565 6559 } else {
6566 6560 p->next = n; /* overload */
6567 6561 p->handle = h;
6568 6562 p->pos = pos;
6569 6563 p->qpos = -1;
6570 6564 p->len = len;
6571 6565 p->flag = flag;
6572 6566 p->index = index;
6573 6567 p->iostatus = s; /* overload */
6574 6568 /* set up seq later, in case thr create fails */
6575 6569 }
6576 6570 return (p);
6577 6571 }
6578 6572
6579 6573 /*
6580 6574 * rdc_aio_buf_get
6581 6575 * get an aio_buf
6582 6576 */
6583 6577 aio_buf_t *
6584 6578 rdc_aio_buf_get(rdc_buf_t *h, int index)
6585 6579 {
6586 6580 aio_buf_t *p;
6587 6581
6588 6582 if (index >= rdc_max_sets) {
6589 6583 cmn_err(CE_NOTE, "!rdc: rdc_aio_buf_get bad index %x", index);
6590 6584 return (NULL);
6591 6585 }
6592 6586
6593 6587 mutex_enter(&h->aio_lock);
6594 6588
6595 6589 p = h->rdc_anon;
6596 6590 while (p && (p->kindex != index))
6597 6591 p = p->next;
6598 6592
6599 6593 mutex_exit(&h->aio_lock);
6600 6594 return (p);
6601 6595 }
6602 6596
6603 6597 /*
6604 6598 * rdc_aio_buf_del
6605 6599 * delete a aio_buf
6606 6600 */
6607 6601 void
6608 6602 rdc_aio_buf_del(rdc_buf_t *h, rdc_k_info_t *krdc)
6609 6603 {
6610 6604 aio_buf_t *p, **pp;
6611 6605
6612 6606 mutex_enter(&h->aio_lock);
6613 6607
6614 6608 p = NULL;
6615 6609 for (pp = &h->rdc_anon; *pp; pp = &((*pp)->next)) {
6616 6610 if ((*pp)->kindex == krdc->index) {
6617 6611 p = *pp;
6618 6612 break;
6619 6613 }
6620 6614 }
6621 6615
6622 6616 if (p) {
6623 6617 *pp = p->next;
6624 6618 kmem_free(p, sizeof (*p));
6625 6619 }
6626 6620 mutex_exit(&h->aio_lock);
6627 6621 }
6628 6622
6629 6623 /*
6630 6624 * rdc_aio_buf_add
6631 6625 * Add a aio_buf.
6632 6626 */
6633 6627 aio_buf_t *
6634 6628 rdc_aio_buf_add(int index, rdc_buf_t *h)
6635 6629 {
6636 6630 aio_buf_t *p;
6637 6631
6638 6632 p = kmem_zalloc(sizeof (*p), KM_NOSLEEP);
6639 6633 if (p == NULL) {
6640 6634 cmn_err(CE_NOTE, "!rdc_aio_buf_add: kmem_alloc failed");
6641 6635 return (NULL);
6642 6636 }
6643 6637
6644 6638 p->rdc_abufp = NULL;
6645 6639 p->kindex = index;
6646 6640
6647 6641 mutex_enter(&h->aio_lock);
6648 6642 p->next = h->rdc_anon;
6649 6643 h->rdc_anon = p;
6650 6644 mutex_exit(&h->aio_lock);
6651 6645 return (p);
6652 6646 }
6653 6647
6654 6648 /*
6655 6649 * kmemalloc a new group structure and setup the common
6656 6650 * fields.
6657 6651 */
6658 6652 static rdc_group_t *
6659 6653 rdc_newgroup()
6660 6654 {
6661 6655 rdc_group_t *group;
6662 6656
6663 6657 group = kmem_zalloc(sizeof (rdc_group_t), KM_SLEEP);
6664 6658 group->diskq.lastio = kmem_zalloc(sizeof (rdc_aio_t), KM_SLEEP);
6665 6659 group->count = 1;
6666 6660 group->seq = RDC_NEWSEQ;
6667 6661 group->seqack = RDC_NEWSEQ;
6668 6662 mutex_init(&group->lock, NULL, MUTEX_DRIVER, NULL);
6669 6663 mutex_init(&group->ra_queue.net_qlock, NULL, MUTEX_DRIVER, NULL);
6670 6664 mutex_init(&group->diskqmutex, NULL, MUTEX_DRIVER, NULL);
6671 6665 mutex_init(&group->diskq.disk_qlock, NULL, MUTEX_DRIVER, NULL);
6672 6666 mutex_init(&group->diskq.head_lock, NULL, MUTEX_DRIVER, NULL);
6673 6667 mutex_init(&group->addthrnumlk, NULL, MUTEX_DRIVER, NULL);
6674 6668 cv_init(&group->unregistercv, NULL, CV_DRIVER, NULL);
6675 6669 cv_init(&group->asyncqcv, NULL, CV_DRIVER, NULL);
6676 6670 cv_init(&group->diskq.busycv, NULL, CV_DRIVER, NULL);
6677 6671 cv_init(&group->diskq.qfullcv, NULL, CV_DRIVER, NULL);
6678 6672 cv_init(&group->ra_queue.qfcv, NULL, CV_DRIVER, NULL);
6679 6673 group->ra_queue.qfill_sleeping = RDC_QFILL_DEAD;
6680 6674 group->diskq.busycnt = 0;
6681 6675 ASSERT(group->synccount == 0); /* group was kmem_zalloc'ed */
6682 6676
6683 6677 /*
6684 6678 * add default number of threads to the flusher thread set, plus
6685 6679 * one extra thread for the disk queue flusher
6686 6680 */
6687 6681 if (nst_add_thread(_rdc_flset, 3) != 3)
6688 6682 cmn_err(CE_NOTE, "!rdc_newgroup: nst_add_thread failed");
6689 6683
6690 6684 return (group);
6691 6685 }
6692 6686
6693 6687 void
6694 6688 rdc_delgroup(rdc_group_t *group)
6695 6689 {
6696 6690
6697 6691 ASSERT(group->asyncstall == 0);
6698 6692 ASSERT(group->rdc_thrnum == 0);
6699 6693 ASSERT(group->count == 0);
6700 6694 ASSERT(MUTEX_HELD(&rdc_many_lock));
6701 6695
6702 6696 mutex_enter(&group->ra_queue.net_qlock);
6703 6697 rdc_sleepqdiscard(group);
6704 6698 mutex_exit(&group->ra_queue.net_qlock);
6705 6699
6706 6700 /* try to remove flusher threads that this group added to _rdc_flset */
6707 6701 if (nst_del_thread(_rdc_flset, group->rdc_addthrnum + 3) !=
6708 6702 group->rdc_addthrnum + 3)
6709 6703 cmn_err(CE_NOTE, "!rdc_delgroup: nst_del_thread failed");
6710 6704
6711 6705 mutex_destroy(&group->lock);
6712 6706 mutex_destroy(&group->ra_queue.net_qlock);
6713 6707 mutex_destroy(&group->diskqmutex);
6714 6708 mutex_destroy(&group->diskq.disk_qlock);
6715 6709 mutex_destroy(&group->diskq.head_lock);
6716 6710 mutex_destroy(&group->addthrnumlk);
6717 6711 cv_destroy(&group->unregistercv);
6718 6712 cv_destroy(&group->asyncqcv);
6719 6713 cv_destroy(&group->diskq.busycv);
6720 6714 cv_destroy(&group->diskq.qfullcv);
6721 6715 cv_destroy(&group->ra_queue.qfcv);
6722 6716 kmem_free(group->diskq.lastio, sizeof (rdc_aio_t));
6723 6717 kmem_free(group, sizeof (rdc_group_t));
6724 6718 }
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