mirror_zfs/man/man7
Umer Saleem 9681de4657
Add snapshots_changed as property
Make dd_snap_cmtime property persistent across mount and unmount
operations by storing in ZAP and restore the value from ZAP on hold
into dd_snap_cmtime instead of updating it.

Expose dd_snap_cmtime as 'snapshots_changed' property that provides a
mechanism to quickly determine whether snapshot list for dataset has
changed without having to mount a dataset or iterate the snapshot list.

It specifies the time at which a snapshot for a dataset was last
created or deleted. This allows us to be more efficient how often we
query snapshots.

Reviewed-by: Ryan Moeller <ryan@iXsystems.com>
Reviewed-by: Alexander Motin <mav@FreeBSD.org>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Umer Saleem <usaleem@ixsystems.com>
Closes #13635
2022-08-02 16:45:30 -07:00
..
dracut.zfs.7 Add dracut.zfs.7 2022-04-20 16:45:47 -07:00
vdevprops.7 Replace dead opensolaris.org license link 2022-07-11 14:16:13 -07:00
zfsconcepts.7 Replace dead opensolaris.org license link 2022-07-11 14:16:13 -07:00
zfsprops.7 Add snapshots_changed as property 2022-08-02 16:45:30 -07:00
zpool-features.7 Replace dead opensolaris.org license link 2022-07-11 14:16:13 -07:00
zpoolconcepts.7 Replace dead opensolaris.org license link 2022-07-11 14:16:13 -07:00
zpoolprops.7 Replace dead opensolaris.org license link 2022-07-11 14:16:13 -07:00