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- This system supports ZFS pool feature flags.
- The following features are supported:
- FEAT DESCRIPTION
- -------------------------------------------------------------
- async_destroy (read-only compatible)
- Destroy filesystems asynchronously.
- empty_bpobj (read-only compatible)
- Snapshots use less space.
- lz4_compress
- LZ4 compression algorithm support.
- multi_vdev_crash_dump
- Crash dumps to multiple vdev pools.
- spacemap_histogram (read-only compatible)
- Spacemaps maintain space histograms.
- enabled_txg (read-only compatible)
- Record txg at which a feature is enabled
- hole_birth
- Retain hole birth txg for more precise zfs send
- extensible_dataset
- Enhanced dataset functionality, used by other features.
- embedded_data
- Blocks which compress very well use even less space.
- bookmarks (read-only compatible)
- "zfs bookmark" command
- filesystem_limits (read-only compatible)
- Filesystem and snapshot limits.
- large_blocks
- Support for blocks larger than 128KB.
- The following legacy versions are also supported:
- VER DESCRIPTION
- --- --------------------------------------------------------
- 1 Initial ZFS version
- 2 Ditto blocks (replicated metadata)
- 3 Hot spares and double parity RAID-Z
- 4 zpool history
- 5 Compression using the gzip algorithm
- 6 bootfs pool property
- 7 Separate intent log devices
- 8 Delegated administration
- 9 refquota and refreservation properties
- 10 Cache devices
- 11 Improved scrub performance
- 12 Snapshot properties
- 13 snapused property
- 14 passthrough-x aclinherit
- 15 user/group space accounting
- 16 stmf property support
- 17 Triple-parity RAID-Z
- 18 Snapshot user holds
- 19 Log device removal
- 20 Compression using zle (zero-length encoding)
- 21 Deduplication
- 22 Received properties
- 23 Slim ZIL
- 24 System attributes
- 25 Improved scrub stats
- 26 Improved snapshot deletion performance
- 27 Improved snapshot creation performance
- 28 Multiple vdev replacements
- For more information on a particular version, including supported releases,
- see the ZFS Administration Guide.
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