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

     zfs-clone(8), zfs-rename(8)