Zpool

Today I successfully upgraded my FreeBSD home nas server from 10.3 to 11.0. This is the final release of version 11.0, though the official announcement is expected to be made on September 28. After the system upgrade, I need to also upgrade the 2 zpools (tank and zroot) so they can have new features. Upgrading tank was easy, all I needed to do was running this command: # zpool upgrade tank This system supports ZFS pool feature flags. Enabled the following features on 'tank': sha512 skein For zroot, in addition to running the above command (by replacing the actually zpool name to zroot), I also need to update the boot code. ...

I’m running ZFS on Fedora 23 and I notice that there’re new features which can be enabled in the existing pool. # zpool status pool: tank state: ONLINE status: Some supported features are not enabled on the pool. The pool can still be used, but some features are unavailable. action: Enable all features using 'zpool upgrade'. Once this is done, the pool may no longer be accessible by software that does not support the features. See zpool-features(5) for details. scan: none requested config: NAME STATE READ WRITE CKSUM tank ONLINE 0 0 0 raidz1-0 ONLINE 0 0 0 sdb ONLINE 0 0 0 sdc ONLINE 0 0 0 errors: No known data errors Get the ZFS version for tank’s pool: ...