Promotes a clone file system to no longer be dependent on
its origin snapshot.
promote command makes it possible to destroy
the file system that the clone was created from. The clone parent-child
dependency relationship is reversed, so that the origin file system
becomes a clone of the specified file system.
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 file system 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(8) subcommand can be used to rename any