Manual Pages  — ZFS-SNAPSHOT

zfs-snapshot – create snapshots of ZFS datasets

SYNOPSIS DESCRIPTION EXAMPLES Example 1: Creating a ZFS Snapshot Example 2: Creating and Destroying Multiple Snapshots Example 3: Promoting a ZFS Clone Example 4: Performing a Rolling Snapshot SEE ALSO

zfs snapshot [-r] [-o property=value ]… dataset@snapname…

The following command creates a snapshot named yesterday. This snapshot is mounted on demand in the .zfs/snapshot directory at the root of the pool/home/bob file system.

    # zfs

The following command creates snapshots named yesterday of pool/home and all of its descendent file systems. Each snapshot is mounted on demand in the .zfs/snapshot directory at the root of its file system. The second command destroys the newly created snapshots.

    # zfs

    # zfs

The following commands illustrate how to test out changes to a file system, and then replace the original file system with the changed one, using clones, clone promotion, and renaming:

# zfs
  populate /pool/project/production with data
# zfs
# zfs
  make changes to /pool/project/beta and test them
# zfs
# zfs
# zfs
  once the legacy version is no longer needed, it can be destroyed
# zfs

The following example shows how to maintain a history of snapshots with a consistent naming scheme. To keep a week's worth of snapshots, the user destroys the oldest snapshot, renames the remaining snapshots, and then creates a new snapshot, as follows:

# zfs
# zfs
# zfs
# zfs
# zfs
# zfs
# zfs
# zfs
# zfs