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|Oracle Solaris Administration: ZFS File Systems Oracle Solaris 11 Information Library|
If you have ZFS storage pools from a previous Solaris release, you can upgrade your pools with the zpool upgrade command to take advantage of the pool features in the current release. In addition, the zpool status command notifies you when your pools are running older versions. For example:
# zpool status pool: tank state: ONLINE status: The pool is formatted using an older on-disk format. The pool can still be used, but some features are unavailable. action: Upgrade the pool using 'zpool upgrade'. Once this is done, the pool will no longer be accessible on older software versions. scrub: none requested config: NAME STATE READ WRITE CKSUM tank ONLINE 0 0 0 mirror-0 ONLINE 0 0 0 c1t0d0 ONLINE 0 0 0 c1t1d0 ONLINE 0 0 0 errors: No known data errors
You can use the following syntax to identify additional information about a particular version and supported releases:
# zpool upgrade -v This system is currently running ZFS pool version 33. The following versions are 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 29 RAID-Z/mirror hybrid allocator 30 Encryption 31 Improved 'zfs list' performance 32 One MB blocksize 33 Improved share support For more information on a particular version, including supported releases, see the ZFS Administration Guide.
Then, you can run the zpool upgrade command to upgrade all of your pools. For example:
# zpool upgrade -a
Note - If you upgrade your pool to a later ZFS version, the pool will not be accessible on a system that runs an older ZFS version.