301                 }
 302         }
 303 
 304         if (zcmd_read_dst_nvlist(hdl, &zc, &config) != 0) {
 305                 zcmd_free_nvlists(&zc);
 306                 return (-1);
 307         }
 308 
 309         zcmd_free_nvlists(&zc);
 310 
 311         zhp->zpool_config_size = zc.zc_nvlist_dst_size;
 312 
 313         if (zhp->zpool_config != NULL) {
 314                 uint64_t oldtxg, newtxg;
 315 
 316                 verify(nvlist_lookup_uint64(zhp->zpool_config,
 317                     ZPOOL_CONFIG_POOL_TXG, &oldtxg) == 0);
 318                 verify(nvlist_lookup_uint64(config,
 319                     ZPOOL_CONFIG_POOL_TXG, &newtxg) == 0);
 320 
 321                 if (zhp->zpool_old_config != NULL)
 322                         nvlist_free(zhp->zpool_old_config);
 323 
 324                 if (oldtxg != newtxg) {
 325                         nvlist_free(zhp->zpool_config);
 326                         zhp->zpool_old_config = NULL;
 327                 } else {
 328                         zhp->zpool_old_config = zhp->zpool_config;
 329                 }
 330         }
 331 
 332         zhp->zpool_config = config;
 333         if (error)
 334                 zhp->zpool_state = POOL_STATE_UNAVAIL;
 335         else
 336                 zhp->zpool_state = POOL_STATE_ACTIVE;
 337 
 338         return (0);
 339 }
 340 
 341 /*

 301                 }
 302         }
 303 
 304         if (zcmd_read_dst_nvlist(hdl, &zc, &config) != 0) {
 305                 zcmd_free_nvlists(&zc);
 306                 return (-1);
 307         }
 308 
 309         zcmd_free_nvlists(&zc);
 310 
 311         zhp->zpool_config_size = zc.zc_nvlist_dst_size;
 312 
 313         if (zhp->zpool_config != NULL) {
 314                 uint64_t oldtxg, newtxg;
 315 
 316                 verify(nvlist_lookup_uint64(zhp->zpool_config,
 317                     ZPOOL_CONFIG_POOL_TXG, &oldtxg) == 0);
 318                 verify(nvlist_lookup_uint64(config,
 319                     ZPOOL_CONFIG_POOL_TXG, &newtxg) == 0);
 320 

 321                 nvlist_free(zhp->zpool_old_config);
 322 
 323                 if (oldtxg != newtxg) {
 324                         nvlist_free(zhp->zpool_config);
 325                         zhp->zpool_old_config = NULL;
 326                 } else {
 327                         zhp->zpool_old_config = zhp->zpool_config;
 328                 }
 329         }
 330 
 331         zhp->zpool_config = config;
 332         if (error)
 333                 zhp->zpool_state = POOL_STATE_UNAVAIL;
 334         else
 335                 zhp->zpool_state = POOL_STATE_ACTIVE;
 336 
 337         return (0);
 338 }
 339 
 340 /*