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.