Upgrading ZFS File Systems (zfs upgrade)

Solaris Express Community Edition, build 69: 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.

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.