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)