diff options
Diffstat (limited to 'module/zfs/dmu.c')
| -rw-r--r-- | module/zfs/dmu.c | 17 |
1 files changed, 15 insertions, 2 deletions
diff --git a/module/zfs/dmu.c b/module/zfs/dmu.c index 103eec1d5..d8e5739f4 100644 --- a/module/zfs/dmu.c +++ b/module/zfs/dmu.c @@ -20,7 +20,7 @@ */ /* * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. - * Copyright (c) 2013 by Delphix. All rights reserved. + * Copyright (c) 2012, 2014 by Delphix. All rights reserved. * Copyright (c) 2013 by Saso Kiselkov. All rights reserved. */ @@ -1688,6 +1688,12 @@ dmu_object_set_compress(objset_t *os, uint64_t object, uint8_t compress, int zfs_mdcomp_disable = 0; +/* + * When the "redundant_metadata" property is set to "most", only indirect + * blocks of this level and higher will have an additional ditto block. + */ +int zfs_redundant_metadata_most_ditto_level = 2; + void dmu_write_policy(objset_t *os, dnode_t *dn, int level, int wp, zio_prop_t *zp) { @@ -1727,6 +1733,13 @@ dmu_write_policy(objset_t *os, dnode_t *dn, int level, int wp, zio_prop_t *zp) if (zio_checksum_table[checksum].ci_correctable < 1 || zio_checksum_table[checksum].ci_eck) checksum = ZIO_CHECKSUM_FLETCHER_4; + + if (os->os_redundant_metadata == ZFS_REDUNDANT_METADATA_ALL || + (os->os_redundant_metadata == + ZFS_REDUNDANT_METADATA_MOST && + (level >= zfs_redundant_metadata_most_ditto_level || + DMU_OT_IS_METADATA(type) || (wp & WP_SPILL)))) + copies++; } else if (wp & WP_NOFILL) { ASSERT(level == 0); @@ -1774,7 +1787,7 @@ dmu_write_policy(objset_t *os, dnode_t *dn, int level, int wp, zio_prop_t *zp) zp->zp_compress = compress; zp->zp_type = (wp & WP_SPILL) ? dn->dn_bonustype : type; zp->zp_level = level; - zp->zp_copies = MIN(copies + ismd, spa_max_replication(os->os_spa)); + zp->zp_copies = MIN(copies, spa_max_replication(os->os_spa)); zp->zp_dedup = dedup; zp->zp_dedup_verify = dedup && dedup_verify; zp->zp_nopwrite = nopwrite; |