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4101 metaslab_debug should allow for fine-grained control
4102 space_maps should store more information about themselves
4103 space map object blocksize should be increased
4104 ::spa_space no longer works
4105 removing a mirrored log device results in a leaked object
4106 asynchronously load metaslab
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Reviewed by: Adam Leventhal <ahl@delphix.com>
Reviewed by: Sebastien Roy <seb@delphix.com>


1317 {
1318         dmu_buf_impl_t *db, *db_next;
1319         int err;
1320 
1321         if (size == 0)
1322                 size = SPA_MINBLOCKSIZE;
1323         if (size > SPA_MAXBLOCKSIZE)
1324                 size = SPA_MAXBLOCKSIZE;
1325         else
1326                 size = P2ROUNDUP(size, SPA_MINBLOCKSIZE);
1327 
1328         if (ibs == dn->dn_indblkshift)
1329                 ibs = 0;
1330 
1331         if (size >> SPA_MINBLOCKSHIFT == dn->dn_datablkszsec && ibs == 0)
1332                 return (0);
1333 
1334         rw_enter(&dn->dn_struct_rwlock, RW_WRITER);
1335 
1336         /* Check for any allocated blocks beyond the first */
1337         if (dn->dn_phys->dn_maxblkid != 0)
1338                 goto fail;
1339 
1340         mutex_enter(&dn->dn_dbufs_mtx);
1341         for (db = list_head(&dn->dn_dbufs); db; db = db_next) {
1342                 db_next = list_next(&dn->dn_dbufs, db);
1343 
1344                 if (db->db_blkid != 0 && db->db_blkid != DMU_BONUS_BLKID &&
1345                     db->db_blkid != DMU_SPILL_BLKID) {
1346                         mutex_exit(&dn->dn_dbufs_mtx);
1347                         goto fail;
1348                 }
1349         }
1350         mutex_exit(&dn->dn_dbufs_mtx);
1351 
1352         if (ibs && dn->dn_nlevels != 1)
1353                 goto fail;
1354 
1355         /* resize the old block */
1356         err = dbuf_hold_impl(dn, 0, 0, TRUE, FTAG, &db);
1357         if (err == 0)




1317 {
1318         dmu_buf_impl_t *db, *db_next;
1319         int err;
1320 
1321         if (size == 0)
1322                 size = SPA_MINBLOCKSIZE;
1323         if (size > SPA_MAXBLOCKSIZE)
1324                 size = SPA_MAXBLOCKSIZE;
1325         else
1326                 size = P2ROUNDUP(size, SPA_MINBLOCKSIZE);
1327 
1328         if (ibs == dn->dn_indblkshift)
1329                 ibs = 0;
1330 
1331         if (size >> SPA_MINBLOCKSHIFT == dn->dn_datablkszsec && ibs == 0)
1332                 return (0);
1333 
1334         rw_enter(&dn->dn_struct_rwlock, RW_WRITER);
1335 
1336         /* Check for any allocated blocks beyond the first */
1337         if (dn->dn_maxblkid != 0)
1338                 goto fail;
1339 
1340         mutex_enter(&dn->dn_dbufs_mtx);
1341         for (db = list_head(&dn->dn_dbufs); db; db = db_next) {
1342                 db_next = list_next(&dn->dn_dbufs, db);
1343 
1344                 if (db->db_blkid != 0 && db->db_blkid != DMU_BONUS_BLKID &&
1345                     db->db_blkid != DMU_SPILL_BLKID) {
1346                         mutex_exit(&dn->dn_dbufs_mtx);
1347                         goto fail;
1348                 }
1349         }
1350         mutex_exit(&dn->dn_dbufs_mtx);
1351 
1352         if (ibs && dn->dn_nlevels != 1)
1353                 goto fail;
1354 
1355         /* resize the old block */
1356         err = dbuf_hold_impl(dn, 0, 0, TRUE, FTAG, &db);
1357         if (err == 0)