ZFS Clones Demo (5 Minutes)

Description

This demo is a continuation of the ZFS Snapshots Demo, however, it could easily be adapted to work with any existing snapshot. We essentially create a writable clone of a snapshot on our existing system.

OpenSolaris Versions Supported

2008.05, 2008.11

Points to Hit

ZFS Clones allow you to create a writable copy of a snapshot

Demo Prep

You need a snapshot to clone

Gotchas

None yet known

Demo

View the existing snapshots in the pool zfs list -t all | grep stripedpool. Assuming you're coming from the ZFS Snapshots Demo, one of them should be stripedpool@today.
zfs clone stripedpool@today stripedpool/PresentationsForRoman
ls /stripedpool
zfs list - why isn't stripedpool/PresentationsForRoman consuming any space? Because the clone is still dependent on the snapshot - zfs list -o origin stripedpool/PresentationsForRoman
To decouple them, promote the clone - zfs promote stripedpool/PresentationsForRoman.
zfs list to show it's now using the same space as stripedpool.

Demo Cleanup

cd /
zpool destroy stripedpool

ZFSClonesDemo