Lines Matching full:rs
60 * Bits for establishing rs->ctr_flags
89 * Flags for rs->ctr_flags field.
200 * Flags for rs->runtime_flags field
261 static void rs_config_backup(struct raid_set *rs, struct rs_layout *l) in rs_config_backup() argument
263 struct mddev *mddev = &rs->md; in rs_config_backup()
270 static void rs_config_restore(struct raid_set *rs, struct rs_layout *l) in rs_config_restore() argument
272 struct mddev *mddev = &rs->md; in rs_config_restore()
400 /* Return true, if raid set in @rs is raid0 */
401 static bool rs_is_raid0(struct raid_set *rs) in rs_is_raid0() argument
403 return !rs->md.level; in rs_is_raid0()
406 /* Return true, if raid set in @rs is raid1 */
407 static bool rs_is_raid1(struct raid_set *rs) in rs_is_raid1() argument
409 return rs->md.level == 1; in rs_is_raid1()
412 /* Return true, if raid set in @rs is raid10 */
413 static bool rs_is_raid10(struct raid_set *rs) in rs_is_raid10() argument
415 return rs->md.level == 10; in rs_is_raid10()
418 /* Return true, if raid set in @rs is level 6 */
419 static bool rs_is_raid6(struct raid_set *rs) in rs_is_raid6() argument
421 return rs->md.level == 6; in rs_is_raid6()
424 /* Return true, if raid set in @rs is level 4, 5 or 6 */
425 static bool rs_is_raid456(struct raid_set *rs) in rs_is_raid456() argument
427 return __within_range(rs->md.level, 4, 6); in rs_is_raid456()
430 /* Return true, if raid set in @rs is reshapable */
432 static bool rs_is_reshapable(struct raid_set *rs) in rs_is_reshapable() argument
434 return rs_is_raid456(rs) || in rs_is_reshapable()
435 (rs_is_raid10(rs) && !__is_raid10_far(rs->md.new_layout)); in rs_is_reshapable()
438 /* Return true, if raid set in @rs is recovering */
439 static bool rs_is_recovering(struct raid_set *rs) in rs_is_recovering() argument
441 return rs->md.resync_offset < rs->md.dev_sectors; in rs_is_recovering()
444 /* Return true, if raid set in @rs is reshaping */
445 static bool rs_is_reshaping(struct raid_set *rs) in rs_is_reshaping() argument
447 return rs->md.reshape_position != MaxSector; in rs_is_reshaping()
491 /* Return valid ctr flags for the raid level of @rs */
492 static unsigned long __valid_flags(struct raid_set *rs) in __valid_flags() argument
494 if (rt_is_raid0(rs->raid_type)) in __valid_flags()
496 else if (rt_is_raid1(rs->raid_type)) in __valid_flags()
498 else if (rt_is_raid10(rs->raid_type)) in __valid_flags()
500 else if (rt_is_raid45(rs->raid_type)) in __valid_flags()
502 else if (rt_is_raid6(rs->raid_type)) in __valid_flags()
509 * Check for valid flags set on @rs
513 static int rs_check_for_valid_flags(struct raid_set *rs) in rs_check_for_valid_flags() argument
515 if (rs->ctr_flags & ~__valid_flags(rs)) { in rs_check_for_valid_flags()
516 rs->ti->error = "Invalid flags combination"; in rs_check_for_valid_flags()
600 static int raid10_format_to_md_layout(struct raid_set *rs, in raid10_format_to_md_layout() argument
621 if (!test_bit(__CTR_FLAG_RAID10_USE_NEAR_SETS, &rs->ctr_flags)) in raid10_format_to_md_layout()
626 if (!test_bit(__CTR_FLAG_RAID10_USE_NEAR_SETS, &rs->ctr_flags)) in raid10_format_to_md_layout()
684 static void rs_set_rdev_sectors(struct raid_set *rs) in rs_set_rdev_sectors() argument
686 struct mddev *mddev = &rs->md; in rs_set_rdev_sectors()
699 * Change bdev capacity of @rs in case of a disk add/remove reshape
701 static void rs_set_capacity(struct raid_set *rs) in rs_set_capacity() argument
703 struct gendisk *gendisk = dm_disk(dm_table_get_md(rs->ti->table)); in rs_set_capacity()
705 set_capacity_and_notify(gendisk, rs->md.array_sectors); in rs_set_capacity()
709 * Set the mddev properties in @rs to the current
712 static void rs_set_cur(struct raid_set *rs) in rs_set_cur() argument
714 struct mddev *mddev = &rs->md; in rs_set_cur()
722 * Set the mddev properties in @rs to the new
725 static void rs_set_new(struct raid_set *rs) in rs_set_new() argument
727 struct mddev *mddev = &rs->md; in rs_set_new()
732 mddev->raid_disks = rs->raid_disks; in rs_set_new()
740 struct raid_set *rs; in raid_set_alloc() local
747 rs = kzalloc(struct_size(rs, dev, raid_devs), GFP_KERNEL); in raid_set_alloc()
748 if (!rs) { in raid_set_alloc()
753 if (mddev_init(&rs->md)) { in raid_set_alloc()
754 kfree(rs); in raid_set_alloc()
759 rs->raid_disks = raid_devs; in raid_set_alloc()
760 rs->delta_disks = 0; in raid_set_alloc()
762 rs->ti = ti; in raid_set_alloc()
763 rs->raid_type = raid_type; in raid_set_alloc()
764 rs->stripe_cache_entries = 256; in raid_set_alloc()
765 rs->md.raid_disks = raid_devs; in raid_set_alloc()
766 rs->md.level = raid_type->level; in raid_set_alloc()
767 rs->md.new_level = rs->md.level; in raid_set_alloc()
768 rs->md.layout = raid_type->algorithm; in raid_set_alloc()
769 rs->md.new_layout = rs->md.layout; in raid_set_alloc()
770 rs->md.delta_disks = 0; in raid_set_alloc()
771 rs->md.resync_offset = MaxSector; in raid_set_alloc()
774 md_rdev_init(&rs->dev[i].rdev); in raid_set_alloc()
778 * rs->md.persistent in raid_set_alloc()
779 * rs->md.external in raid_set_alloc()
780 * rs->md.chunk_sectors in raid_set_alloc()
781 * rs->md.new_chunk_sectors in raid_set_alloc()
782 * rs->md.dev_sectors in raid_set_alloc()
785 return rs; in raid_set_alloc()
788 /* Free all @rs allocations */
789 static void raid_set_free(struct raid_set *rs) in raid_set_free() argument
793 if (rs->journal_dev.dev) { in raid_set_free()
794 md_rdev_clear(&rs->journal_dev.rdev); in raid_set_free()
795 dm_put_device(rs->ti, rs->journal_dev.dev); in raid_set_free()
798 for (i = 0; i < rs->raid_disks; i++) { in raid_set_free()
799 if (rs->dev[i].meta_dev) in raid_set_free()
800 dm_put_device(rs->ti, rs->dev[i].meta_dev); in raid_set_free()
801 md_rdev_clear(&rs->dev[i].rdev); in raid_set_free()
802 if (rs->dev[i].data_dev) in raid_set_free()
803 dm_put_device(rs->ti, rs->dev[i].data_dev); in raid_set_free()
806 mddev_destroy(&rs->md); in raid_set_free()
807 kfree(rs); in raid_set_free()
826 static int parse_dev_params(struct raid_set *rs, struct dm_arg_set *as) in parse_dev_params() argument
839 for (i = 0; i < rs->raid_disks; i++) { in parse_dev_params()
840 rs->dev[i].rdev.raid_disk = i; in parse_dev_params()
842 rs->dev[i].meta_dev = NULL; in parse_dev_params()
843 rs->dev[i].data_dev = NULL; in parse_dev_params()
849 rs->dev[i].rdev.data_offset = 0; in parse_dev_params()
850 rs->dev[i].rdev.new_data_offset = 0; in parse_dev_params()
851 rs->dev[i].rdev.mddev = &rs->md; in parse_dev_params()
858 r = dm_get_device(rs->ti, arg, dm_table_get_mode(rs->ti->table), in parse_dev_params()
859 &rs->dev[i].meta_dev); in parse_dev_params()
861 rs->ti->error = "RAID metadata device lookup failure"; in parse_dev_params()
865 rs->dev[i].rdev.sb_page = alloc_page(GFP_KERNEL); in parse_dev_params()
866 if (!rs->dev[i].rdev.sb_page) { in parse_dev_params()
867 rs->ti->error = "Failed to allocate superblock page"; in parse_dev_params()
877 if (!test_bit(In_sync, &rs->dev[i].rdev.flags) && in parse_dev_params()
878 (!rs->dev[i].rdev.recovery_offset)) { in parse_dev_params()
879 rs->ti->error = "Drive designated for rebuild not specified"; in parse_dev_params()
883 if (rs->dev[i].meta_dev) { in parse_dev_params()
884 rs->ti->error = "No data device supplied with metadata device"; in parse_dev_params()
891 r = dm_get_device(rs->ti, arg, dm_table_get_mode(rs->ti->table), in parse_dev_params()
892 &rs->dev[i].data_dev); in parse_dev_params()
894 rs->ti->error = "RAID device lookup failure"; in parse_dev_params()
898 if (rs->dev[i].meta_dev) { in parse_dev_params()
900 rs->dev[i].rdev.meta_bdev = rs->dev[i].meta_dev->bdev; in parse_dev_params()
902 rs->dev[i].rdev.bdev = rs->dev[i].data_dev->bdev; in parse_dev_params()
903 list_add_tail(&rs->dev[i].rdev.same_set, &rs->md.disks); in parse_dev_params()
904 if (!test_bit(In_sync, &rs->dev[i].rdev.flags)) in parse_dev_params()
908 if (rs->journal_dev.dev) in parse_dev_params()
909 list_add_tail(&rs->journal_dev.rdev.same_set, &rs->md.disks); in parse_dev_params()
912 rs->md.external = 0; in parse_dev_params()
913 rs->md.persistent = 1; in parse_dev_params()
914 rs->md.major_version = 2; in parse_dev_params()
915 } else if (rebuild && !rs->md.resync_offset) { in parse_dev_params()
927 rs->ti->error = "Unable to rebuild drive while array is not in-sync"; in parse_dev_params()
936 * @rs
939 * Set rs->md.bitmap_info.chunksize (which really refers to 'region size').
944 static int validate_region_size(struct raid_set *rs, unsigned long region_size) in validate_region_size() argument
946 unsigned long min_region_size = rs->ti->len / (1 << 21); in validate_region_size()
948 if (rs_is_raid0(rs)) in validate_region_size()
968 if (region_size > rs->ti->len) { in validate_region_size()
969 rs->ti->error = "Supplied region size is too large"; in validate_region_size()
976 rs->ti->error = "Supplied region size is too small"; in validate_region_size()
981 rs->ti->error = "Region size is not a power of 2"; in validate_region_size()
985 if (region_size < rs->md.chunk_sectors) { in validate_region_size()
986 rs->ti->error = "Region size is smaller than the chunk size"; in validate_region_size()
994 rs->md.bitmap_info.chunksize = to_bytes(region_size); in validate_region_size()
1001 * @rs
1008 static int validate_raid_redundancy(struct raid_set *rs) in validate_raid_redundancy() argument
1014 for (i = 0; i < rs->raid_disks; i++) in validate_raid_redundancy()
1015 if (!test_bit(FirstUse, &rs->dev[i].rdev.flags) && in validate_raid_redundancy()
1016 ((!test_bit(In_sync, &rs->dev[i].rdev.flags) || in validate_raid_redundancy()
1017 !rs->dev[i].rdev.sb_page))) in validate_raid_redundancy()
1020 switch (rs->md.level) { in validate_raid_redundancy()
1024 if (rebuild_cnt >= rs->md.raid_disks) in validate_raid_redundancy()
1030 if (rebuild_cnt > rs->raid_type->parity_devs) in validate_raid_redundancy()
1034 copies = raid10_md_layout_to_copies(rs->md.new_layout); in validate_raid_redundancy()
1057 raid_disks = min(rs->raid_disks, rs->md.raid_disks); in validate_raid_redundancy()
1058 if (__is_raid10_near(rs->md.new_layout)) { in validate_raid_redundancy()
1062 if ((!rs->dev[i].rdev.sb_page || in validate_raid_redundancy()
1063 !test_bit(In_sync, &rs->dev[i].rdev.flags)) && in validate_raid_redundancy()
1088 if ((!rs->dev[i].rdev.sb_page || in validate_raid_redundancy()
1089 !test_bit(In_sync, &rs->dev[i].rdev.flags)) && in validate_raid_redundancy()
1130 static int parse_raid_params(struct raid_set *rs, struct dm_arg_set *as, in parse_raid_params() argument
1140 struct raid_type *rt = rs->raid_type; in parse_raid_params()
1146 rs->ti->error = "Bad numerical argument given for chunk_size"; in parse_raid_params()
1159 rs->ti->error = "Chunk size must be a power of 2"; in parse_raid_params()
1162 rs->ti->error = "Chunk size value is too small"; in parse_raid_params()
1166 rs->md.new_chunk_sectors = rs->md.chunk_sectors = value; in parse_raid_params()
1185 for (i = 0; i < rs->raid_disks; i++) { in parse_raid_params()
1186 set_bit(In_sync, &rs->dev[i].rdev.flags); in parse_raid_params()
1187 rs->dev[i].rdev.recovery_offset = MaxSector; in parse_raid_params()
1196 rs->ti->error = "Not enough raid parameters given"; in parse_raid_params()
1201 if (test_and_set_bit(__CTR_FLAG_NOSYNC, &rs->ctr_flags)) { in parse_raid_params()
1202 rs->ti->error = "Only one 'nosync' argument allowed"; in parse_raid_params()
1208 if (test_and_set_bit(__CTR_FLAG_SYNC, &rs->ctr_flags)) { in parse_raid_params()
1209 rs->ti->error = "Only one 'sync' argument allowed"; in parse_raid_params()
1215 if (test_and_set_bit(__CTR_FLAG_RAID10_USE_NEAR_SETS, &rs->ctr_flags)) { in parse_raid_params()
1216 rs->ti->error = "Only one 'raid10_use_new_sets' argument allowed"; in parse_raid_params()
1225 rs->ti->error = "Wrong number of raid parameters given"; in parse_raid_params()
1234 if (test_and_set_bit(__CTR_FLAG_RAID10_FORMAT, &rs->ctr_flags)) { in parse_raid_params()
1235 rs->ti->error = "Only one 'raid10_format' argument pair allowed"; in parse_raid_params()
1239 rs->ti->error = "'raid10_format' is an invalid parameter for this RAID type"; in parse_raid_params()
1244 rs->ti->error = "Invalid 'raid10_format' value given"; in parse_raid_params()
1255 if (test_and_set_bit(__CTR_FLAG_JOURNAL_DEV, &rs->ctr_flags)) { in parse_raid_params()
1256 rs->ti->error = "Only one raid4/5/6 set journaling device allowed"; in parse_raid_params()
1260 rs->ti->error = "'journal_dev' is an invalid parameter for this RAID type"; in parse_raid_params()
1263 r = dm_get_device(rs->ti, arg, dm_table_get_mode(rs->ti->table), in parse_raid_params()
1264 &rs->journal_dev.dev); in parse_raid_params()
1266 rs->ti->error = "raid4/5/6 journal device lookup failure"; in parse_raid_params()
1269 jdev = &rs->journal_dev.rdev; in parse_raid_params()
1271 jdev->mddev = &rs->md; in parse_raid_params()
1272 jdev->bdev = rs->journal_dev.dev->bdev; in parse_raid_params()
1275 rs->ti->error = "No space for raid4/5/6 journal"; in parse_raid_params()
1278 rs->journal_dev.mode = R5C_JOURNAL_MODE_WRITE_THROUGH; in parse_raid_params()
1287 if (!test_bit(__CTR_FLAG_JOURNAL_DEV, &rs->ctr_flags)) { in parse_raid_params()
1288 rs->ti->error = "raid4/5/6 'journal_mode' is invalid without 'journal_dev'"; in parse_raid_params()
1291 if (test_and_set_bit(__CTR_FLAG_JOURNAL_MODE, &rs->ctr_flags)) { in parse_raid_params()
1292 rs->ti->error = "Only one raid4/5/6 'journal_mode' argument allowed"; in parse_raid_params()
1297 rs->ti->error = "Invalid 'journal_mode' argument"; in parse_raid_params()
1300 rs->journal_dev.mode = r; in parse_raid_params()
1308 rs->ti->error = "Bad numerical argument given in raid params"; in parse_raid_params()
1318 if (!__within_range(value, 0, rs->raid_disks - 1)) { in parse_raid_params()
1319 rs->ti->error = "Invalid rebuild index given"; in parse_raid_params()
1323 if (test_and_set_bit(value, (void *) rs->rebuild_disks)) { in parse_raid_params()
1324 rs->ti->error = "rebuild for this index already given"; in parse_raid_params()
1328 rd = rs->dev + value; in parse_raid_params()
1332 set_bit(__CTR_FLAG_REBUILD, &rs->ctr_flags); in parse_raid_params()
1335 rs->ti->error = "write_mostly option is only valid for RAID1"; in parse_raid_params()
1339 if (!__within_range(value, 0, rs->md.raid_disks - 1)) { in parse_raid_params()
1340 rs->ti->error = "Invalid write_mostly index given"; in parse_raid_params()
1345 set_bit(WriteMostly, &rs->dev[value].rdev.flags); in parse_raid_params()
1346 set_bit(__CTR_FLAG_WRITE_MOSTLY, &rs->ctr_flags); in parse_raid_params()
1349 rs->ti->error = "max_write_behind option is only valid for RAID1"; in parse_raid_params()
1353 if (test_and_set_bit(__CTR_FLAG_MAX_WRITE_BEHIND, &rs->ctr_flags)) { in parse_raid_params()
1354 rs->ti->error = "Only one max_write_behind argument pair allowed"; in parse_raid_params()
1359 rs->ti->error = "Max write-behind limit out of range"; in parse_raid_params()
1363 rs->md.bitmap_info.max_write_behind = value / 2; in parse_raid_params()
1365 if (test_and_set_bit(__CTR_FLAG_DAEMON_SLEEP, &rs->ctr_flags)) { in parse_raid_params()
1366 rs->ti->error = "Only one daemon_sleep argument pair allowed"; in parse_raid_params()
1370 rs->ti->error = "daemon sleep period out of range"; in parse_raid_params()
1373 rs->md.bitmap_info.daemon_sleep = value; in parse_raid_params()
1376 if (test_and_set_bit(__CTR_FLAG_DATA_OFFSET, &rs->ctr_flags)) { in parse_raid_params()
1377 rs->ti->error = "Only one data_offset argument pair allowed"; in parse_raid_params()
1383 rs->ti->error = "Bogus data_offset value"; in parse_raid_params()
1386 rs->data_offset = value; in parse_raid_params()
1389 if (test_and_set_bit(__CTR_FLAG_DELTA_DISKS, &rs->ctr_flags)) { in parse_raid_params()
1390 rs->ti->error = "Only one delta_disks argument pair allowed"; in parse_raid_params()
1395 rs->ti->error = "Too many delta_disk requested"; in parse_raid_params()
1399 rs->delta_disks = value; in parse_raid_params()
1401 if (test_and_set_bit(__CTR_FLAG_STRIPE_CACHE, &rs->ctr_flags)) { in parse_raid_params()
1402 rs->ti->error = "Only one stripe_cache argument pair allowed"; in parse_raid_params()
1407 rs->ti->error = "Inappropriate argument: stripe_cache"; in parse_raid_params()
1412 rs->ti->error = "Bogus stripe cache entries value"; in parse_raid_params()
1415 rs->stripe_cache_entries = value; in parse_raid_params()
1417 if (test_and_set_bit(__CTR_FLAG_MIN_RECOVERY_RATE, &rs->ctr_flags)) { in parse_raid_params()
1418 rs->ti->error = "Only one min_recovery_rate argument pair allowed"; in parse_raid_params()
1423 rs->ti->error = "min_recovery_rate out of range"; in parse_raid_params()
1426 rs->md.sync_speed_min = value; in parse_raid_params()
1428 if (test_and_set_bit(__CTR_FLAG_MAX_RECOVERY_RATE, &rs->ctr_flags)) { in parse_raid_params()
1429 rs->ti->error = "Only one max_recovery_rate argument pair allowed"; in parse_raid_params()
1434 rs->ti->error = "max_recovery_rate out of range"; in parse_raid_params()
1437 rs->md.sync_speed_max = value; in parse_raid_params()
1439 if (test_and_set_bit(__CTR_FLAG_REGION_SIZE, &rs->ctr_flags)) { in parse_raid_params()
1440 rs->ti->error = "Only one region_size argument pair allowed"; in parse_raid_params()
1445 rs->requested_bitmap_chunk_sectors = value; in parse_raid_params()
1447 if (test_and_set_bit(__CTR_FLAG_RAID10_COPIES, &rs->ctr_flags)) { in parse_raid_params()
1448 rs->ti->error = "Only one raid10_copies argument pair allowed"; in parse_raid_params()
1452 if (!__within_range(value, 2, rs->md.raid_disks)) { in parse_raid_params()
1453 rs->ti->error = "Bad value for 'raid10_copies'"; in parse_raid_params()
1460 rs->ti->error = "Unable to parse RAID parameter"; in parse_raid_params()
1465 if (test_bit(__CTR_FLAG_SYNC, &rs->ctr_flags) && in parse_raid_params()
1466 test_bit(__CTR_FLAG_NOSYNC, &rs->ctr_flags)) { in parse_raid_params()
1467 rs->ti->error = "sync and nosync are mutually exclusive"; in parse_raid_params()
1471 if (test_bit(__CTR_FLAG_REBUILD, &rs->ctr_flags) && in parse_raid_params()
1472 (test_bit(__CTR_FLAG_SYNC, &rs->ctr_flags) || in parse_raid_params()
1473 test_bit(__CTR_FLAG_NOSYNC, &rs->ctr_flags))) { in parse_raid_params()
1474 rs->ti->error = "sync/nosync and rebuild are mutually exclusive"; in parse_raid_params()
1478 if (write_mostly >= rs->md.raid_disks) { in parse_raid_params()
1479 rs->ti->error = "Can't set all raid1 devices to write_mostly"; in parse_raid_params()
1483 if (rs->md.sync_speed_max && in parse_raid_params()
1484 rs->md.sync_speed_min > rs->md.sync_speed_max) { in parse_raid_params()
1485 rs->ti->error = "Bogus recovery rates"; in parse_raid_params()
1489 if (validate_region_size(rs, region_size)) in parse_raid_params()
1492 if (rs->md.chunk_sectors) in parse_raid_params()
1493 max_io_len = rs->md.chunk_sectors; in parse_raid_params()
1497 if (dm_set_target_max_io_len(rs->ti, max_io_len)) in parse_raid_params()
1501 if (raid10_copies > rs->md.raid_disks) { in parse_raid_params()
1502 rs->ti->error = "Not enough devices to satisfy specification"; in parse_raid_params()
1506 rs->md.new_layout = raid10_format_to_md_layout(rs, raid10_format, raid10_copies); in parse_raid_params()
1507 if (rs->md.new_layout < 0) { in parse_raid_params()
1508 rs->ti->error = "Error getting raid10 format"; in parse_raid_params()
1509 return rs->md.new_layout; in parse_raid_params()
1512 rt = get_raid_type_by_ll(10, rs->md.new_layout); in parse_raid_params()
1514 rs->ti->error = "Failed to recognize new raid10 layout"; in parse_raid_params()
1520 test_bit(__CTR_FLAG_RAID10_USE_NEAR_SETS, &rs->ctr_flags)) { in parse_raid_params()
1521 rs->ti->error = "RAID10 format 'near' and 'raid10_use_near_sets' are incompatible"; in parse_raid_params()
1526 rs->raid10_copies = raid10_copies; in parse_raid_params()
1529 rs->md.persistent = 0; in parse_raid_params()
1530 rs->md.external = 1; in parse_raid_params()
1533 return rs_check_for_valid_flags(rs); in parse_raid_params()
1537 static int rs_set_raid456_stripe_cache(struct raid_set *rs) in rs_set_raid456_stripe_cache() argument
1541 struct mddev *mddev = &rs->md; in rs_set_raid456_stripe_cache()
1543 uint32_t nr_stripes = rs->stripe_cache_entries; in rs_set_raid456_stripe_cache()
1545 if (!rt_is_raid456(rs->raid_type)) { in rs_set_raid456_stripe_cache()
1546 rs->ti->error = "Inappropriate raid level; cannot change stripe_cache size"; in rs_set_raid456_stripe_cache()
1558 rs->ti->error = "Cannot change stripe_cache size on inactive RAID set"; in rs_set_raid456_stripe_cache()
1566 rs->ti->error = "Failed to set raid4/5/6 stripe cache size"; in rs_set_raid456_stripe_cache()
1576 /* Return # of data stripes as kept in mddev as of @rs (i.e. as of superblock) */
1577 static unsigned int mddev_data_stripes(struct raid_set *rs) in mddev_data_stripes() argument
1579 return rs->md.raid_disks - rs->raid_type->parity_devs; in mddev_data_stripes()
1582 /* Return # of data stripes of @rs (i.e. as of ctr) */
1583 static unsigned int rs_data_stripes(struct raid_set *rs) in rs_data_stripes() argument
1585 return rs->raid_disks - rs->raid_type->parity_devs; in rs_data_stripes()
1589 * Retrieve rdev->sectors from any valid raid device of @rs
1592 static sector_t __rdev_sectors(struct raid_set *rs) in __rdev_sectors() argument
1596 for (i = 0; i < rs->raid_disks; i++) { in __rdev_sectors()
1597 struct md_rdev *rdev = &rs->dev[i].rdev; in __rdev_sectors()
1608 static int _check_data_dev_sectors(struct raid_set *rs) in _check_data_dev_sectors() argument
1613 rdev_for_each(rdev, &rs->md) in _check_data_dev_sectors()
1616 if (ds < rs->md.dev_sectors) { in _check_data_dev_sectors()
1617 rs->ti->error = "Component device(s) too small"; in _check_data_dev_sectors()
1626 static sector_t _get_reshape_sectors(struct raid_set *rs) in _get_reshape_sectors() argument
1631 rdev_for_each(rdev, &rs->md) in _get_reshape_sectors()
1639 return max(reshape_sectors, (sector_t) rs->data_offset); in _get_reshape_sectors()
1642 /* Calculate the sectors per device and per array used for @rs */
1643 static int rs_set_dev_and_array_sectors(struct raid_set *rs, sector_t sectors, bool use_mddev) in rs_set_dev_and_array_sectors() argument
1648 struct mddev *mddev = &rs->md; in rs_set_dev_and_array_sectors()
1652 data_stripes = mddev_data_stripes(rs); in rs_set_dev_and_array_sectors()
1654 delta_disks = rs->delta_disks; in rs_set_dev_and_array_sectors()
1655 data_stripes = rs_data_stripes(rs); in rs_set_dev_and_array_sectors()
1659 if (rt_is_raid1(rs->raid_type)) in rs_set_dev_and_array_sectors()
1661 else if (rt_is_raid10(rs->raid_type)) { in rs_set_dev_and_array_sectors()
1662 if (rs->raid10_copies < 2 || in rs_set_dev_and_array_sectors()
1664 rs->ti->error = "Bogus raid10 data copies or delta disks"; in rs_set_dev_and_array_sectors()
1668 dev_sectors *= rs->raid10_copies; in rs_set_dev_and_array_sectors()
1672 array_sectors = (data_stripes + delta_disks) * (dev_sectors - _get_reshape_sectors(rs)); in rs_set_dev_and_array_sectors()
1673 if (sector_div(array_sectors, rs->raid10_copies)) in rs_set_dev_and_array_sectors()
1681 array_sectors = (data_stripes + delta_disks) * (dev_sectors - _get_reshape_sectors(rs)); in rs_set_dev_and_array_sectors()
1685 rs_set_rdev_sectors(rs); in rs_set_dev_and_array_sectors()
1687 return _check_data_dev_sectors(rs); in rs_set_dev_and_array_sectors()
1689 rs->ti->error = "Target length not divisible by number of data devices"; in rs_set_dev_and_array_sectors()
1693 /* Setup recovery on @rs */
1694 static void rs_setup_recovery(struct raid_set *rs, sector_t dev_sectors) in rs_setup_recovery() argument
1697 if (rs_is_raid0(rs)) in rs_setup_recovery()
1698 rs->md.resync_offset = MaxSector; in rs_setup_recovery()
1704 else if (rs_is_raid6(rs)) in rs_setup_recovery()
1705 rs->md.resync_offset = dev_sectors; in rs_setup_recovery()
1711 rs->md.resync_offset = test_bit(__CTR_FLAG_NOSYNC, &rs->ctr_flags) in rs_setup_recovery()
1717 struct raid_set *rs = container_of(ws, struct raid_set, md.event_work); in do_table_event() local
1722 if (!rs_is_reshaping(rs) && in do_table_event()
1723 rs->array_sectors > rs->md.array_sectors && in do_table_event()
1724 !rs->md.delta_disks && in do_table_event()
1725 rs->md.raid_disks == rs->raid_disks) { in do_table_event()
1727 if (rs_is_raid10(rs)) in do_table_event()
1728 rs_set_rdev_sectors(rs); in do_table_event()
1730 rs->md.array_sectors = rs->array_sectors; in do_table_event()
1731 rs_set_capacity(rs); in do_table_event()
1734 dm_table_event(rs->ti->table); in do_table_event()
1738 * Make sure a valid takover (level switch) is being requested on @rs
1743 static int rs_check_takeover(struct raid_set *rs) in rs_check_takeover() argument
1745 struct mddev *mddev = &rs->md; in rs_check_takeover()
1748 if (rs->md.degraded) { in rs_check_takeover()
1749 rs->ti->error = "Can't takeover degraded raid set"; in rs_check_takeover()
1753 if (rs_is_reshaping(rs)) { in rs_check_takeover()
1754 rs->ti->error = "Can't takeover reshaping raid set"; in rs_check_takeover()
1767 !(rs->raid_disks % mddev->raid_disks)) in rs_check_takeover()
1893 rs->ti->error = "takeover not possible"; in rs_check_takeover()
1897 /* True if @rs requested to be taken over */
1898 static bool rs_takeover_requested(struct raid_set *rs) in rs_takeover_requested() argument
1900 return rs->md.new_level != rs->md.level; in rs_takeover_requested()
1904 static bool rs_is_layout_change(struct raid_set *rs, bool use_mddev) in rs_is_layout_change() argument
1906 return (use_mddev ? rs->md.delta_disks : rs->delta_disks) || in rs_is_layout_change()
1907 rs->md.new_layout != rs->md.layout || in rs_is_layout_change()
1908 rs->md.new_chunk_sectors != rs->md.chunk_sectors; in rs_is_layout_change()
1911 /* True if @rs is requested to reshape by ctr */
1912 static bool rs_reshape_requested(struct raid_set *rs) in rs_reshape_requested() argument
1915 struct mddev *mddev = &rs->md; in rs_reshape_requested()
1917 if (rs_takeover_requested(rs)) in rs_reshape_requested()
1920 if (rs_is_raid0(rs)) in rs_reshape_requested()
1923 change = rs_is_layout_change(rs, false); in rs_reshape_requested()
1926 if (rs_is_raid1(rs)) { in rs_reshape_requested()
1927 if (rs->delta_disks) in rs_reshape_requested()
1928 return !!rs->delta_disks; in rs_reshape_requested()
1931 mddev->raid_disks != rs->raid_disks; in rs_reshape_requested()
1934 if (rs_is_raid10(rs)) in rs_reshape_requested()
1937 rs->delta_disks >= 0; in rs_reshape_requested()
2031 * Check for reshape constraints on raid set @rs:
2041 static int rs_check_reshape(struct raid_set *rs) in rs_check_reshape() argument
2043 struct mddev *mddev = &rs->md; in rs_check_reshape()
2046 rs->ti->error = "Reshape not supported"; in rs_check_reshape()
2048 rs->ti->error = "Can't reshape degraded raid set"; in rs_check_reshape()
2049 else if (rs_is_recovering(rs)) in rs_check_reshape()
2050 rs->ti->error = "Convert request on recovering raid set prohibited"; in rs_check_reshape()
2051 else if (rs_is_reshaping(rs)) in rs_check_reshape()
2052 rs->ti->error = "raid set already reshaping!"; in rs_check_reshape()
2053 else if (!(rs_is_raid1(rs) || rs_is_raid10(rs) || rs_is_raid456(rs))) in rs_check_reshape()
2054 rs->ti->error = "Reshaping only supported for raid1/4/5/6/10"; in rs_check_reshape()
2116 struct raid_set *rs = container_of(mddev, struct raid_set, md); in super_sync() local
2128 for (i = 0; i < rs->raid_disks; i++) in super_sync()
2129 if (!rs->dev[i].data_dev || test_bit(Faulty, &rs->dev[i].rdev.flags)) { in super_sync()
2237 static int super_init_validation(struct raid_set *rs, struct md_rdev *rdev) in super_init_validation() argument
2240 struct mddev *mddev = &rs->md; in super_init_validation()
2277 if (test_bit(__CTR_FLAG_DELTA_DISKS, &rs->ctr_flags)) { in super_init_validation()
2289 rs->raid_type = get_raid_type_by_ll(mddev->level, mddev->layout); in super_init_validation()
2299 if (rs_takeover_requested(rs)) { in super_init_validation()
2306 } else if (rs_reshape_requested(rs)) { in super_init_validation()
2319 if (rs->delta_disks) in super_init_validation()
2321 mddev->raid_disks, mddev->raid_disks + rs->delta_disks); in super_init_validation()
2322 if (rs_is_raid10(rs)) { in super_init_validation()
2336 if (!test_bit(__CTR_FLAG_NOSYNC, &rs->ctr_flags)) in super_init_validation()
2371 if (new_devs == rs->raid_disks || !rebuilds) { in super_init_validation()
2373 if (new_devs == rs->raid_disks) { in super_init_validation()
2377 new_devs != rs->delta_disks) { in super_init_validation()
2392 } else if (!test_bit(__CTR_FLAG_REBUILD, &rs->ctr_flags) && rs_is_recovering(rs)) { in super_init_validation()
2396 } else if (rs_is_reshaping(rs)) { in super_init_validation()
2425 if (rs_is_raid10(rs) && __is_raid10_near(mddev->layout)) { in super_init_validation()
2427 rs->raid_disks % rs->raid10_copies) { in super_init_validation()
2428 rs->ti->error = in super_init_validation()
2435 } else if (!(rs_is_raid10(rs) && rt_is_raid0(rs->raid_type)) && in super_init_validation()
2436 !(rs_is_raid0(rs) && rt_is_raid10(rs->raid_type)) && in super_init_validation()
2437 !rt_is_raid1(rs->raid_type)) { in super_init_validation()
2438 rs->ti->error = "Cannot change device positions in raid set"; in super_init_validation()
2457 static int super_validate(struct raid_set *rs, struct md_rdev *rdev) in super_validate() argument
2459 struct mddev *mddev = &rs->md; in super_validate()
2462 if (rs_is_raid0(rs) || !rdev->sb_page || rdev->raid_disk < 0) in super_validate()
2471 if (!mddev->events && super_init_validation(rs, rdev)) in super_validate()
2476 rs->ti->error = "Unable to assemble array: Unknown flag(s) in compatible feature flags"; in super_validate()
2481 rs->ti->error = "Unable to assemble array: No incompatible feature flags supported yet"; in super_validate()
2485 /* Enable bitmap creation on @rs unless no metadevs or raid0 or journaled raid4/5/6 set. */ in super_validate()
2486 …mddev->bitmap_info.offset = (rt_is_raid0(rs->raid_type) || rs->journal_dev.dev) ? 0 : to_sector(40… in super_validate()
2505 else if (!rs_is_reshaping(rs)) in super_validate()
2528 static int analyse_superblocks(struct dm_target *ti, struct raid_set *rs) in analyse_superblocks() argument
2532 struct mddev *mddev = &rs->md; in analyse_superblocks()
2535 if (test_bit(__CTR_FLAG_SYNC, &rs->ctr_flags)) in analyse_superblocks()
2563 if (test_bit(__CTR_FLAG_SYNC, &rs->ctr_flags)) in analyse_superblocks()
2580 if (rs_is_raid0(rs)) in analyse_superblocks()
2603 rs->ti->error = "Unable to assemble array: Invalid superblocks"; in analyse_superblocks()
2604 if (super_validate(rs, freshest)) in analyse_superblocks()
2607 if (validate_raid_redundancy(rs)) { in analyse_superblocks()
2608 rs->ti->error = "Insufficient redundancy to activate array"; in analyse_superblocks()
2615 super_validate(rs, rdev)) in analyse_superblocks()
2621 * Adjust data_offset and new_data_offset on all disk members of @rs
2628 static int rs_adjust_data_offsets(struct raid_set *rs) in rs_adjust_data_offsets() argument
2634 if (!test_bit(__CTR_FLAG_DATA_OFFSET, &rs->ctr_flags)) { in rs_adjust_data_offsets()
2635 if (!rs_is_reshapable(rs)) in rs_adjust_data_offsets()
2642 rdev = &rs->dev[0].rdev; in rs_adjust_data_offsets()
2644 if (rs->delta_disks < 0) { in rs_adjust_data_offsets()
2651 * - after reshape: data is at offset rs->data_offset != 0 on each component LV in rs_adjust_data_offsets()
2654 new_data_offset = rs->data_offset; in rs_adjust_data_offsets()
2656 } else if (rs->delta_disks > 0) { in rs_adjust_data_offsets()
2660 * - before reshape: data is at offset rs->data_offset != 0 and in rs_adjust_data_offsets()
2665 data_offset = rs->data_offset; in rs_adjust_data_offsets()
2676 * - before reshape: data is at offset rs->data_offset 0 and in rs_adjust_data_offsets()
2679 * data is at offset rs->data_offset != 0 and in rs_adjust_data_offsets()
2687 data_offset = rs->data_offset ? rdev->data_offset : 0; in rs_adjust_data_offsets()
2688 new_data_offset = data_offset ? 0 : rs->data_offset; in rs_adjust_data_offsets()
2689 set_bit(RT_FLAG_UPDATE_SBS, &rs->runtime_flags); in rs_adjust_data_offsets()
2695 if (rs->data_offset && in rs_adjust_data_offsets()
2696 bdev_nr_sectors(rdev->bdev) - rs->md.dev_sectors < MIN_FREE_RESHAPE_SPACE) { in rs_adjust_data_offsets()
2697 rs->ti->error = data_offset ? "No space for forward reshape" : in rs_adjust_data_offsets()
2706 if (rs->md.resync_offset < rs->md.dev_sectors) in rs_adjust_data_offsets()
2707 rs->md.resync_offset += rs->dev[0].rdev.data_offset; in rs_adjust_data_offsets()
2710 rdev_for_each(rdev, &rs->md) { in rs_adjust_data_offsets()
2720 /* Userpace reordered disks -> adjust raid_disk indexes in @rs */
2721 static void __reorder_raid_disk_indexes(struct raid_set *rs) in __reorder_raid_disk_indexes() argument
2726 rdev_for_each(rdev, &rs->md) { in __reorder_raid_disk_indexes()
2735 * Setup @rs for takeover by a different raid level
2737 static int rs_setup_takeover(struct raid_set *rs) in rs_setup_takeover() argument
2739 struct mddev *mddev = &rs->md; in rs_setup_takeover()
2741 unsigned int d = mddev->raid_disks = rs->raid_disks; in rs_setup_takeover()
2742 sector_t new_data_offset = rs->dev[0].rdev.data_offset ? 0 : rs->data_offset; in rs_setup_takeover()
2744 if (rt_is_raid10(rs->raid_type)) { in rs_setup_takeover()
2745 if (rs_is_raid0(rs)) { in rs_setup_takeover()
2747 __reorder_raid_disk_indexes(rs); in rs_setup_takeover()
2750 mddev->layout = raid10_format_to_md_layout(rs, ALGORITHM_RAID10_FAR, in rs_setup_takeover()
2751 rs->raid10_copies); in rs_setup_takeover()
2752 } else if (rs_is_raid1(rs)) in rs_setup_takeover()
2754 mddev->layout = raid10_format_to_md_layout(rs, ALGORITHM_RAID10_NEAR, in rs_setup_takeover()
2755 rs->raid_disks); in rs_setup_takeover()
2765 rdev = &rs->dev[d].rdev; in rs_setup_takeover()
2767 if (test_bit(d, (void *) rs->rebuild_disks)) { in rs_setup_takeover()
2781 /* Prepare @rs for reshape */
2782 static int rs_prepare_reshape(struct raid_set *rs) in rs_prepare_reshape() argument
2785 struct mddev *mddev = &rs->md; in rs_prepare_reshape()
2787 if (rs_is_raid10(rs)) { in rs_prepare_reshape()
2788 if (rs->raid_disks != mddev->raid_disks && in rs_prepare_reshape()
2790 rs->raid10_copies && in rs_prepare_reshape()
2791 rs->raid10_copies != __raid10_near_copies(mddev->layout)) { in rs_prepare_reshape()
2798 if (rs->raid_disks % rs->raid10_copies) { in rs_prepare_reshape()
2799 rs->ti->error = "Can't reshape raid10 mirror groups"; in rs_prepare_reshape()
2804 __reorder_raid_disk_indexes(rs); in rs_prepare_reshape()
2805 mddev->layout = raid10_format_to_md_layout(rs, ALGORITHM_RAID10_NEAR, in rs_prepare_reshape()
2806 rs->raid10_copies); in rs_prepare_reshape()
2812 } else if (rs_is_raid456(rs)) in rs_prepare_reshape()
2815 else if (rs_is_raid1(rs)) { in rs_prepare_reshape()
2816 if (rs->delta_disks) { in rs_prepare_reshape()
2818 mddev->degraded = rs->delta_disks < 0 ? -rs->delta_disks : rs->delta_disks; in rs_prepare_reshape()
2822 mddev->raid_disks = rs->raid_disks; in rs_prepare_reshape()
2826 rs->ti->error = "Called with bogus raid type"; in rs_prepare_reshape()
2831 set_bit(RT_FLAG_RESHAPE_RS, &rs->runtime_flags); in rs_prepare_reshape()
2832 set_bit(RT_FLAG_UPDATE_SBS, &rs->runtime_flags); in rs_prepare_reshape()
2833 } else if (mddev->raid_disks < rs->raid_disks) in rs_prepare_reshape()
2835 set_bit(RT_FLAG_UPDATE_SBS, &rs->runtime_flags); in rs_prepare_reshape()
2847 static int rs_setup_reshape(struct raid_set *rs) in rs_setup_reshape() argument
2851 sector_t reshape_sectors = _get_reshape_sectors(rs); in rs_setup_reshape()
2852 struct mddev *mddev = &rs->md; in rs_setup_reshape()
2855 mddev->delta_disks = rs->delta_disks; in rs_setup_reshape()
2861 DMINFO("Ignoring invalid layout change with delta_disks=%d", rs->delta_disks); in rs_setup_reshape()
2888 if (rs->delta_disks > 0) { in rs_setup_reshape()
2890 for (d = cur_raid_devs; d < rs->raid_disks; d++) { in rs_setup_reshape()
2891 rdev = &rs->dev[d].rdev; in rs_setup_reshape()
2902 rdev->recovery_offset = rs_is_raid1(rs) ? 0 : MaxSector; in rs_setup_reshape()
2908 } else if (rs->delta_disks < 0) { in rs_setup_reshape()
2909 r = rs_set_dev_and_array_sectors(rs, rs->ti->len, true); in rs_setup_reshape()
2935 mddev->reshape_backwards = rs->dev[0].rdev.data_offset ? 0 : 1; in rs_setup_reshape()
2943 rdev_for_each(rdev, &rs->md) in rs_setup_reshape()
2955 static void rs_reset_inconclusive_reshape(struct raid_set *rs) in rs_reset_inconclusive_reshape() argument
2957 if (!rs_is_reshaping(rs) && rs_is_layout_change(rs, true)) { in rs_reset_inconclusive_reshape()
2958 rs_set_cur(rs); in rs_reset_inconclusive_reshape()
2959 rs->md.delta_disks = 0; in rs_reset_inconclusive_reshape()
2960 rs->md.reshape_backwards = 0; in rs_reset_inconclusive_reshape()
2968 static void configure_discard_support(struct raid_set *rs) in configure_discard_support() argument
2972 struct dm_target *ti = rs->ti; in configure_discard_support()
2977 raid456 = rs_is_raid456(rs); in configure_discard_support()
2979 for (i = 0; i < rs->raid_disks; i++) { in configure_discard_support()
2980 if (!rs->dev[i].rdev.bdev || in configure_discard_support()
2981 !bdev_max_discard_sectors(rs->dev[i].rdev.bdev)) in configure_discard_support()
3016 struct raid_set *rs = NULL; in raid_ctr() local
3053 rs = raid_set_alloc(ti, rt, num_raid_devs); in raid_ctr()
3054 if (IS_ERR(rs)) in raid_ctr()
3055 return PTR_ERR(rs); in raid_ctr()
3057 r = parse_raid_params(rs, &as, num_raid_params); in raid_ctr()
3061 r = parse_dev_params(rs, &as); in raid_ctr()
3065 rs->md.sync_super = super_sync; in raid_ctr()
3073 r = rs_set_dev_and_array_sectors(rs, rs->ti->len, false); in raid_ctr()
3078 rs->array_sectors = rs->md.array_sectors; in raid_ctr()
3079 rs->dev_sectors = rs->md.dev_sectors; in raid_ctr()
3086 rs_config_backup(rs, &rs_layout); in raid_ctr()
3088 r = analyse_superblocks(ti, rs); in raid_ctr()
3093 sb_array_sectors = rs->md.array_sectors; in raid_ctr()
3094 rdev_sectors = __rdev_sectors(rs); in raid_ctr()
3102 reshape_sectors = _get_reshape_sectors(rs); in raid_ctr()
3103 if (rs->dev_sectors != rdev_sectors) { in raid_ctr()
3104 resize = (rs->dev_sectors != rdev_sectors - reshape_sectors); in raid_ctr()
3105 if (rs->dev_sectors > rdev_sectors - reshape_sectors) in raid_ctr()
3106 set_bit(RT_FLAG_RS_GROW, &rs->runtime_flags); in raid_ctr()
3109 INIT_WORK(&rs->md.event_work, do_table_event); in raid_ctr()
3110 ti->private = rs; in raid_ctr()
3115 rs_config_restore(rs, &rs_layout); in raid_ctr()
3123 if (test_bit(MD_ARRAY_FIRST_USE, &rs->md.flags)) { in raid_ctr()
3125 if (rs_is_raid6(rs) && in raid_ctr()
3126 test_bit(__CTR_FLAG_NOSYNC, &rs->ctr_flags)) { in raid_ctr()
3131 rs_setup_recovery(rs, 0); in raid_ctr()
3132 set_bit(RT_FLAG_UPDATE_SBS, &rs->runtime_flags); in raid_ctr()
3133 rs_set_new(rs); in raid_ctr()
3134 } else if (rs_is_recovering(rs)) { in raid_ctr()
3137 } else if (rs_is_reshaping(rs)) { in raid_ctr()
3144 /* skip setup rs */ in raid_ctr()
3145 } else if (rs_takeover_requested(rs)) { in raid_ctr()
3146 if (rs_is_reshaping(rs)) { in raid_ctr()
3153 if (test_bit(__CTR_FLAG_JOURNAL_DEV, &rs->ctr_flags)) { in raid_ctr()
3167 r = rs_check_takeover(rs); in raid_ctr()
3171 r = rs_setup_takeover(rs); in raid_ctr()
3175 set_bit(RT_FLAG_UPDATE_SBS, &rs->runtime_flags); in raid_ctr()
3177 rs_setup_recovery(rs, MaxSector); in raid_ctr()
3178 rs_set_new(rs); in raid_ctr()
3179 } else if (rs_reshape_requested(rs)) { in raid_ctr()
3181 clear_bit(RT_FLAG_RS_GROW, &rs->runtime_flags); in raid_ctr()
3189 if (test_bit(__CTR_FLAG_JOURNAL_DEV, &rs->ctr_flags)) { in raid_ctr()
3196 if (reshape_sectors || rs_is_raid1(rs)) { in raid_ctr()
3204 r = rs_prepare_reshape(rs); in raid_ctr()
3209 rs_setup_recovery(rs, MaxSector); in raid_ctr()
3211 rs_set_cur(rs); in raid_ctr()
3215 if (test_bit(__CTR_FLAG_REBUILD, &rs->ctr_flags)) { in raid_ctr()
3216 clear_bit(RT_FLAG_RS_GROW, &rs->runtime_flags); in raid_ctr()
3217 set_bit(RT_FLAG_UPDATE_SBS, &rs->runtime_flags); in raid_ctr()
3218 rs_setup_recovery(rs, MaxSector); in raid_ctr()
3219 } else if (test_bit(RT_FLAG_RS_GROW, &rs->runtime_flags)) { in raid_ctr()
3224 r = rs_set_dev_and_array_sectors(rs, sb_array_sectors, false); in raid_ctr()
3228 …rs_setup_recovery(rs, rs->md.resync_offset < rs->md.dev_sectors ? rs->md.resync_offset : rs->md.de… in raid_ctr()
3231 r = rs_set_dev_and_array_sectors(rs, rs->ti->len, false); in raid_ctr()
3235 if (sb_array_sectors > rs->array_sectors) in raid_ctr()
3236 set_bit(RT_FLAG_UPDATE_SBS, &rs->runtime_flags); in raid_ctr()
3238 rs_set_cur(rs); in raid_ctr()
3242 r = rs_adjust_data_offsets(rs); in raid_ctr()
3247 rs_reset_inconclusive_reshape(rs); in raid_ctr()
3250 rs->md.ro = MD_RDONLY; in raid_ctr()
3251 rs->md.in_sync = 1; in raid_ctr()
3254 mddev_suspend_and_lock_nointr(&rs->md); in raid_ctr()
3257 md_frozen_sync_thread(&rs->md); in raid_ctr()
3259 r = md_run(&rs->md); in raid_ctr()
3260 rs->md.in_sync = 0; /* Assume already marked dirty */ in raid_ctr()
3263 mddev_unlock(&rs->md); in raid_ctr()
3267 r = md_start(&rs->md); in raid_ctr()
3274 if (test_bit(__CTR_FLAG_JOURNAL_MODE, &rs->ctr_flags)) { in raid_ctr()
3275 r = r5c_journal_mode_set(&rs->md, rs->journal_dev.mode); in raid_ctr()
3282 set_bit(RT_FLAG_RS_SUSPENDED, &rs->runtime_flags); in raid_ctr()
3285 if (rs_is_raid456(rs)) { in raid_ctr()
3286 r = rs_set_raid456_stripe_cache(rs); in raid_ctr()
3292 if (test_bit(RT_FLAG_RESHAPE_RS, &rs->runtime_flags)) { in raid_ctr()
3293 r = rs_check_reshape(rs); in raid_ctr()
3298 rs_config_restore(rs, &rs_layout); in raid_ctr()
3300 if (rs->md.pers->start_reshape) { in raid_ctr()
3301 r = rs->md.pers->check_reshape(&rs->md); in raid_ctr()
3310 configure_discard_support(rs); in raid_ctr()
3311 rs->md.dm_gendisk = dm_disk(dm_table_get_md(ti->table)); in raid_ctr()
3313 mddev_unlock(&rs->md); in raid_ctr()
3317 md_stop(&rs->md); in raid_ctr()
3318 mddev_unlock(&rs->md); in raid_ctr()
3320 raid_set_free(rs); in raid_ctr()
3327 struct raid_set *rs = ti->private; in raid_dtr() local
3329 mddev_lock_nointr(&rs->md); in raid_dtr()
3330 md_stop(&rs->md); in raid_dtr()
3331 rs->md.dm_gendisk = NULL; in raid_dtr()
3332 mddev_unlock(&rs->md); in raid_dtr()
3334 if (work_pending(&rs->md.event_work)) in raid_dtr()
3335 flush_work(&rs->md.event_work); in raid_dtr()
3336 raid_set_free(rs); in raid_dtr()
3341 struct raid_set *rs = ti->private; in raid_map() local
3342 struct mddev *mddev = &rs->md; in raid_map()
3420 static const char *__raid_dev_status(struct raid_set *rs, struct md_rdev *rdev) in __raid_dev_status() argument
3427 return (rs->journal_dev.mode == R5C_JOURNAL_MODE_WRITE_THROUGH) ? "A" : "a"; in __raid_dev_status()
3428 else if (test_bit(RT_FLAG_RS_RESYNCING, &rs->runtime_flags) || in __raid_dev_status()
3429 (!test_bit(RT_FLAG_RS_IN_SYNC, &rs->runtime_flags) && in __raid_dev_status()
3436 /* Helper to return resync/reshape progress for @rs and runtime flags for raid set in sync / resync…
3437 static sector_t rs_get_progress(struct raid_set *rs, unsigned long recovery, in rs_get_progress() argument
3441 struct mddev *mddev = &rs->md; in rs_get_progress()
3443 clear_bit(RT_FLAG_RS_IN_SYNC, &rs->runtime_flags); in rs_get_progress()
3444 clear_bit(RT_FLAG_RS_RESYNCING, &rs->runtime_flags); in rs_get_progress()
3446 if (rs_is_raid0(rs)) { in rs_get_progress()
3448 set_bit(RT_FLAG_RS_IN_SYNC, &rs->runtime_flags); in rs_get_progress()
3462 set_bit(RT_FLAG_RS_IN_SYNC, &rs->runtime_flags); in rs_get_progress()
3479 set_bit(RT_FLAG_RS_RESYNCING, &rs->runtime_flags); in rs_get_progress()
3487 set_bit(RT_FLAG_RS_IN_SYNC, &rs->runtime_flags); in rs_get_progress()
3494 set_bit(RT_FLAG_RS_RESYNCING, &rs->runtime_flags); in rs_get_progress()
3505 set_bit(RT_FLAG_RS_IN_SYNC, &rs->runtime_flags); in rs_get_progress()
3509 clear_bit(RT_FLAG_RS_IN_SYNC, &rs->runtime_flags); in rs_get_progress()
3527 struct raid_set *rs = ti->private; in raid_status() local
3528 struct mddev *mddev = &rs->md; in raid_status()
3529 struct r5conf *conf = rs_is_raid456(rs) ? mddev->private : NULL; in raid_status()
3551 resync_max_sectors = test_bit(RT_FLAG_RS_PRERESUMED, &rs->runtime_flags) ? in raid_status()
3553 recovery = rs->md.recovery; in raid_status()
3555 progress = rs_get_progress(rs, recovery, state, resync_max_sectors); in raid_status()
3560 for (i = 0; i < rs->raid_disks; i++) in raid_status()
3561 DMEMIT(__raid_dev_status(rs, &rs->dev[i].rdev)); in raid_status()
3606 DMEMIT(" %llu", (unsigned long long) rs->dev[0].rdev.data_offset); in raid_status()
3611 DMEMIT(" %s", test_bit(__CTR_FLAG_JOURNAL_DEV, &rs->ctr_flags) ? in raid_status()
3612 __raid_dev_status(rs, &rs->journal_dev.rdev) : "-"); in raid_status()
3622 for (i = 0; i < rs->raid_disks; i++) { in raid_status()
3623 rebuild_writemostly_count += (test_bit(i, (void *) rs->rebuild_disks) ? 2 : 0) + in raid_status()
3624 (test_bit(WriteMostly, &rs->dev[i].rdev.flags) ? 2 : 0); in raid_status()
3626 rebuild_writemostly_count -= (test_bit(__CTR_FLAG_REBUILD, &rs->ctr_flags) ? 2 : 0) + in raid_status()
3627 (test_bit(__CTR_FLAG_WRITE_MOSTLY, &rs->ctr_flags) ? 2 : 0); in raid_status()
3630 hweight32(rs->ctr_flags & CTR_FLAG_OPTIONS_NO_ARGS) + in raid_status()
3631 hweight32(rs->ctr_flags & CTR_FLAG_OPTIONS_ONE_ARG) * 2; in raid_status()
3634 DMEMIT("%s %u %u", rs->raid_type->name, raid_param_cnt, mddev->new_chunk_sectors); in raid_status()
3635 if (test_bit(__CTR_FLAG_SYNC, &rs->ctr_flags)) in raid_status()
3637 if (test_bit(__CTR_FLAG_NOSYNC, &rs->ctr_flags)) in raid_status()
3639 if (test_bit(__CTR_FLAG_REBUILD, &rs->ctr_flags)) in raid_status()
3640 for (i = 0; i < rs->raid_disks; i++) in raid_status()
3641 if (test_bit(i, (void *) rs->rebuild_disks)) in raid_status()
3643 if (test_bit(__CTR_FLAG_DAEMON_SLEEP, &rs->ctr_flags)) in raid_status()
3646 if (test_bit(__CTR_FLAG_MIN_RECOVERY_RATE, &rs->ctr_flags)) in raid_status()
3649 if (test_bit(__CTR_FLAG_MAX_RECOVERY_RATE, &rs->ctr_flags)) in raid_status()
3652 if (test_bit(__CTR_FLAG_WRITE_MOSTLY, &rs->ctr_flags)) in raid_status()
3653 for (i = 0; i < rs->raid_disks; i++) in raid_status()
3654 if (test_bit(WriteMostly, &rs->dev[i].rdev.flags)) in raid_status()
3656 rs->dev[i].rdev.raid_disk); in raid_status()
3657 if (test_bit(__CTR_FLAG_MAX_WRITE_BEHIND, &rs->ctr_flags)) in raid_status()
3660 if (test_bit(__CTR_FLAG_STRIPE_CACHE, &rs->ctr_flags)) in raid_status()
3663 if (test_bit(__CTR_FLAG_REGION_SIZE, &rs->ctr_flags)) in raid_status()
3666 if (test_bit(__CTR_FLAG_RAID10_COPIES, &rs->ctr_flags)) in raid_status()
3669 if (test_bit(__CTR_FLAG_RAID10_FORMAT, &rs->ctr_flags)) in raid_status()
3672 if (test_bit(__CTR_FLAG_DELTA_DISKS, &rs->ctr_flags)) in raid_status()
3674 max(rs->delta_disks, mddev->delta_disks)); in raid_status()
3675 if (test_bit(__CTR_FLAG_DATA_OFFSET, &rs->ctr_flags)) in raid_status()
3677 (unsigned long long) rs->data_offset); in raid_status()
3678 if (test_bit(__CTR_FLAG_JOURNAL_DEV, &rs->ctr_flags)) in raid_status()
3680 __get_dev_name(rs->journal_dev.dev)); in raid_status()
3681 if (test_bit(__CTR_FLAG_JOURNAL_MODE, &rs->ctr_flags)) in raid_status()
3683 md_journal_mode_to_dm_raid(rs->journal_dev.mode)); in raid_status()
3684 DMEMIT(" %d", rs->raid_disks); in raid_status()
3685 for (i = 0; i < rs->raid_disks; i++) in raid_status()
3686 DMEMIT(" %s %s", __get_dev_name(rs->dev[i].meta_dev), in raid_status()
3687 __get_dev_name(rs->dev[i].data_dev)); in raid_status()
3700 recovery = rs->md.recovery; in raid_status()
3704 for (i = 0; i < rs->raid_disks; i++) { in raid_status()
3706 DMEMIT(__raid_dev_status(rs, &rs->dev[i].rdev)); in raid_status()
3711 switch (rs->journal_dev.mode) { in raid_status()
3733 struct raid_set *rs = ti->private; in raid_message() local
3734 struct mddev *mddev = &rs->md; in raid_message()
3740 if (test_bit(RT_FLAG_RS_SUSPENDED, &rs->runtime_flags) || in raid_message()
3741 test_bit(RT_FLAG_RS_FROZEN, &rs->runtime_flags)) in raid_message()
3796 struct raid_set *rs = ti->private; in raid_iterate_devices() local
3800 for (i = 0; !r && i < rs->raid_disks; i++) { in raid_iterate_devices()
3801 if (rs->dev[i].data_dev) { in raid_iterate_devices()
3802 r = fn(ti, rs->dev[i].data_dev, in raid_iterate_devices()
3804 rs->md.dev_sectors, data); in raid_iterate_devices()
3813 struct raid_set *rs = ti->private; in raid_io_hints() local
3814 unsigned int chunk_size_bytes = to_bytes(rs->md.chunk_sectors); in raid_io_hints()
3818 limits->io_opt = chunk_size_bytes * mddev_data_stripes(rs); in raid_io_hints()
3824 struct raid_set *rs = ti->private; in raid_presuspend() local
3825 struct mddev *mddev = &rs->md; in raid_presuspend()
3831 set_bit(RT_FLAG_RS_FROZEN, &rs->runtime_flags); in raid_presuspend()
3847 struct raid_set *rs = ti->private; in raid_presuspend_undo() local
3849 clear_bit(RT_FLAG_RS_FROZEN, &rs->runtime_flags); in raid_presuspend_undo()
3854 struct raid_set *rs = ti->private; in raid_postsuspend() local
3856 if (!test_and_set_bit(RT_FLAG_RS_SUSPENDED, &rs->runtime_flags)) { in raid_postsuspend()
3861 md_stop_writes(&rs->md); in raid_postsuspend()
3862 mddev_suspend(&rs->md, false); in raid_postsuspend()
3863 rs->md.ro = MD_RDONLY; in raid_postsuspend()
3867 static void attempt_restore_of_faulty_devices(struct raid_set *rs) in attempt_restore_of_faulty_devices() argument
3874 struct mddev *mddev = &rs->md; in attempt_restore_of_faulty_devices()
3883 for (i = 0; i < rs->raid_disks; i++) { in attempt_restore_of_faulty_devices()
3884 r = &rs->dev[i].rdev; in attempt_restore_of_faulty_devices()
3893 rs->raid_type->name, i); in attempt_restore_of_faulty_devices()
3935 rdev_for_each(r, &rs->md) { in attempt_restore_of_faulty_devices()
3950 static int __load_dirty_region_bitmap(struct raid_set *rs) in __load_dirty_region_bitmap() argument
3955 if (!rs_is_raid0(rs) && in __load_dirty_region_bitmap()
3956 !test_and_set_bit(RT_FLAG_RS_BITMAP_LOADED, &rs->runtime_flags)) { in __load_dirty_region_bitmap()
3957 struct mddev *mddev = &rs->md; in __load_dirty_region_bitmap()
3970 static void rs_update_sbs(struct raid_set *rs) in rs_update_sbs() argument
3972 struct mddev *mddev = &rs->md; in rs_update_sbs()
3982 * Reshape changes raid algorithm of @rs to new one within personality
3988 static int rs_start_reshape(struct raid_set *rs) in rs_start_reshape() argument
3991 struct mddev *mddev = &rs->md; in rs_start_reshape()
3997 r = rs_setup_reshape(rs); in rs_start_reshape()
4008 rs->ti->error = "pers->check_reshape() failed"; in rs_start_reshape()
4019 rs->ti->error = "pers->start_reshape() failed"; in rs_start_reshape()
4029 rs_update_sbs(rs); in rs_start_reshape()
4037 struct raid_set *rs = ti->private; in raid_preresume() local
4038 struct mddev *mddev = &rs->md; in raid_preresume()
4041 if (test_and_set_bit(RT_FLAG_RS_PRERESUMED, &rs->runtime_flags)) in raid_preresume()
4045 if (!test_bit(RT_FLAG_RS_GROW, &rs->runtime_flags) && in raid_preresume()
4046 rs->array_sectors != mddev->array_sectors) in raid_preresume()
4047 rs_set_capacity(rs); in raid_preresume()
4055 if (test_bit(RT_FLAG_UPDATE_SBS, &rs->runtime_flags)) in raid_preresume()
4056 rs_update_sbs(rs); in raid_preresume()
4059 r = __load_dirty_region_bitmap(rs); in raid_preresume()
4064 if (test_bit(RT_FLAG_RS_GROW, &rs->runtime_flags)) { in raid_preresume()
4065 mddev->array_sectors = rs->array_sectors; in raid_preresume()
4066 mddev->dev_sectors = rs->dev_sectors; in raid_preresume()
4067 rs_set_rdev_sectors(rs); in raid_preresume()
4068 rs_set_capacity(rs); in raid_preresume()
4072 if (test_bit(RT_FLAG_RS_BITMAP_LOADED, &rs->runtime_flags) && mddev->bitmap && in raid_preresume()
4073 (test_bit(RT_FLAG_RS_GROW, &rs->runtime_flags) || in raid_preresume()
4074 (rs->requested_bitmap_chunk_sectors && in raid_preresume()
4075 mddev->bitmap_info.chunksize != to_bytes(rs->requested_bitmap_chunk_sectors)))) { in raid_preresume()
4076 int chunksize = to_bytes(rs->requested_bitmap_chunk_sectors) ?: mddev->bitmap_info.chunksize; in raid_preresume()
4086 /* Check for any resize/reshape on @rs and adjust/initiate */ in raid_preresume()
4090 if (test_bit(RT_FLAG_RS_GROW, &rs->runtime_flags)) in raid_preresume()
4095 if (test_bit(RT_FLAG_RESHAPE_RS, &rs->runtime_flags)) { in raid_preresume()
4097 rs_set_rdev_sectors(rs); in raid_preresume()
4099 r = rs_start_reshape(rs); in raid_preresume()
4111 struct raid_set *rs = ti->private; in raid_resume() local
4112 struct mddev *mddev = &rs->md; in raid_resume()
4114 if (test_and_set_bit(RT_FLAG_RS_RESUMED, &rs->runtime_flags)) { in raid_resume()
4121 attempt_restore_of_faulty_devices(rs); in raid_resume()
4125 if (test_and_clear_bit(RT_FLAG_RS_SUSPENDED, &rs->runtime_flags)) { in raid_resume()
4128 rs_set_capacity(rs); in raid_resume()
4134 clear_bit(RT_FLAG_RS_FROZEN, &rs->runtime_flags); in raid_resume()