Oracle Solaris ZFS Administration Guide

Upgrading ZFS File Systems (zfs upgrade)

Solaris 10 10/08 Release: The zfs upgrade command is included in this release to provide future ZFS file system enhancements to existing file systems. ZFS storage pools have a similar upgrade feature to provide pool enhancements to existing storage pools.

For example:

# zfs upgrade
This system is currently running ZFS filesystem version 3.

All filesystems are formatted with the current version.

Note –

File systems that are upgraded and any streams created from those upgraded file systems by the zfs send command are not accessible on systems that are running older software releases.