NAME
zfs-promote — promote clone dataset to no longer depend on origin snapshot
SYNOPSIS
zfs promote clone
DESCRIPTION
The zfs promote command makes it possible to destroy the dataset that the clone was created from. The clone parent-child dependency relationship is reversed, so that the origin dataset becomes a clone of the specified dataset.
The snapshot that was cloned, and any snapshots previous to this snapshot, are now owned by the promoted clone. The space they use moves from the origin dataset to the promoted clone, so enough space must be available to accommodate these snapshots. No new space is consumed by this operation, but the space accounting is adjusted. The promoted clone must not have any conflicting snapshot names of its own. The zfs rename subcommand can be used to rename any conflicting snapshots.
EXAMPLES
Example 1: Promoting a
ZFS Clone
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 create
pool/project/production
populate /pool/project/production with data
# zfs snapshot
pool/project/production@today
# zfs clone pool/project/production@today
pool/project/beta
make changes to /pool/project/beta and test them
# zfs promote pool/project/beta
# zfs rename pool/project/production
pool/project/legacy
# zfs rename pool/project/beta
pool/project/production
once the legacy version is no longer needed, it can be
destroyed
# zfs destroy pool/project/legacy
SEE ALSO
OpenZFS March 16, 2022 OpenZFS