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Aug 27th, 2016
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  1. This system supports ZFS pool feature flags.
  2.  
  3. The following features are supported:
  4.  
  5. FEAT DESCRIPTION
  6. -------------------------------------------------------------
  7. async_destroy (read-only compatible)
  8. Destroy filesystems asynchronously.
  9. empty_bpobj (read-only compatible)
  10. Snapshots use less space.
  11. lz4_compress
  12. LZ4 compression algorithm support.
  13. multi_vdev_crash_dump
  14. Crash dumps to multiple vdev pools.
  15. spacemap_histogram (read-only compatible)
  16. Spacemaps maintain space histograms.
  17. enabled_txg (read-only compatible)
  18. Record txg at which a feature is enabled
  19. hole_birth
  20. Retain hole birth txg for more precise zfs send
  21. extensible_dataset
  22. Enhanced dataset functionality, used by other features.
  23. embedded_data
  24. Blocks which compress very well use even less space.
  25. bookmarks (read-only compatible)
  26. "zfs bookmark" command
  27. filesystem_limits (read-only compatible)
  28. Filesystem and snapshot limits.
  29. large_blocks
  30. Support for blocks larger than 128KB.
  31.  
  32. The following legacy versions are also supported:
  33.  
  34. VER DESCRIPTION
  35. --- --------------------------------------------------------
  36. 1 Initial ZFS version
  37. 2 Ditto blocks (replicated metadata)
  38. 3 Hot spares and double parity RAID-Z
  39. 4 zpool history
  40. 5 Compression using the gzip algorithm
  41. 6 bootfs pool property
  42. 7 Separate intent log devices
  43. 8 Delegated administration
  44. 9 refquota and refreservation properties
  45. 10 Cache devices
  46. 11 Improved scrub performance
  47. 12 Snapshot properties
  48. 13 snapused property
  49. 14 passthrough-x aclinherit
  50. 15 user/group space accounting
  51. 16 stmf property support
  52. 17 Triple-parity RAID-Z
  53. 18 Snapshot user holds
  54. 19 Log device removal
  55. 20 Compression using zle (zero-length encoding)
  56. 21 Deduplication
  57. 22 Received properties
  58. 23 Slim ZIL
  59. 24 System attributes
  60. 25 Improved scrub stats
  61. 26 Improved snapshot deletion performance
  62. 27 Improved snapshot creation performance
  63. 28 Multiple vdev replacements
  64.  
  65. For more information on a particular version, including supported releases,
  66. see the ZFS Administration Guide.
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