ZFS-UPGRADE(8)          FreeBSD System Manager's Manual         ZFS-UPGRADE(8)

NAME
     zfs-upgrade - manage on-disk version of ZFS filesystems

SYNOPSIS
     zfs upgrade
     zfs upgrade -v
     zfs upgrade [-r] [-V version] -a|filesystem

DESCRIPTION
     zfs upgrade
       Displays a list of file systems that are not the most recent version.

     zfs upgrade -v
       Displays a list of currently supported file system versions.

     zfs upgrade [-r] [-V version] -a|filesystem
       Upgrades file systems to a new on-disk version.  Once this is done, the
       file systems will no longer be accessible on systems running older
       versions of ZFS.  zfs send streams generated from new snapshots of
       these file systems cannot be accessed on systems running older versions
       of ZFS.

       In general, the file system version is independent of the pool version.
       See zpool-features(7) for information on features of ZFS storage pools.

       In some cases, the file system version and the pool version are
       interrelated and the pool version must be upgraded before the file
       system version can be upgraded.

       -V version  Upgrade to version.  If not specified, upgrade to the most
                   recent version.  This option can only be used to increase
                   the version number, and only up to the most recent version
                   supported by this version of ZFS.

       -a          Upgrade all file systems on all imported pools.

       filesystem  Upgrade the specified file system.

       -r          Upgrade the specified file system and all descendent file
                   systems.

SEE ALSO
     zpool-upgrade(8)

FreeBSD 13.1-RELEASE-p6          June 30, 2019         FreeBSD 13.1-RELEASE-p6