diff options
Diffstat (limited to 'sys/contrib/openzfs/man/man7/zpool-features.7')
| -rw-r--r-- | sys/contrib/openzfs/man/man7/zpool-features.7 | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/sys/contrib/openzfs/man/man7/zpool-features.7 b/sys/contrib/openzfs/man/man7/zpool-features.7 index 8ae1b2b3b923..10dfd1f92936 100644 --- a/sys/contrib/openzfs/man/man7/zpool-features.7 +++ b/sys/contrib/openzfs/man/man7/zpool-features.7 @@ -401,6 +401,17 @@ This feature becomes .Sy active when first block is cloned. When the last cloned block is freed, it goes back to the enabled state. +.feature com.truenas block_cloning_endian yes +This feature corrects ZAP entry endianness issues in the Block Reference +Table (BRT) used by block cloning. +During the original block cloning implementation, BRT ZAP entries were +mistakenly stored as arrays of 8 single-byte entries instead of single +8-byte entries, making pools non-endian-safe. +.Pp +This feature is activated when the first BRT ZAP is created (that way +ensuring compatibility with existing pools). +When active, new BRT entries are stored in the correct endian-safe format. +The feature becomes inactive when all BRT ZAPs are destroyed. .feature com.delphix bookmarks yes extensible_dataset This feature enables use of the .Nm zfs Cm bookmark @@ -493,6 +504,19 @@ vdev type, or when adding a new .Sy draid vdev to an existing pool. . +.feature com.klarasystems dynamic_gang_header no +This feature enables larger gang headers based on the sector size of the pool. +When enabled, gang headers will use the entire space allocated for them, instead +of always restricting themselves to 512 bytes. +This can reduce the need for nested gang trees in extreme fragmentation +scenarios. +.Pp +This feature becomes active when a gang header is written that is larger than +512 bytes. +This feature is not enabled by +.Xr zpool-upgrade 8 . +Instead, it must be manually enabled, or be part of a compatibility file. +. .feature org.illumos edonr no extensible_dataset This feature enables the use of the Edon-R hash algorithm for checksum, including for nopwrite @@ -829,6 +853,23 @@ when the command is used on a top-level vdev, and will never return to being .Sy enabled . . +.feature com.truenas physical_rewrite yes extensible_dataset +This feature enables physical block rewriting that preserves logical birth +times, avoiding unnecessary inclusion of rewritten blocks in incremental +.Nm zfs Cm send +streams. +When enabled, the +.Nm zfs Cm rewrite Fl P +command can be used. +.Pp +This feature becomes +.Sy active +the first time +.Nm zfs Cm rewrite Fl P +is used on any dataset, and will return to being +.Sy enabled +once all datasets that have ever used physical rewrite are destroyed. +. .feature org.zfsonlinux project_quota yes extensible_dataset This feature allows administrators to account the spaces and objects usage information against the project identifier |