On 08/11/2021 05:52, Venky Shankar wrote:
On Sun, Nov 7, 2021 at 3:28 PM Joost Nieuwenhuijse <joost@xxxxxxxxxxx> wrote:
Hi,
I've enabled a simple CephFS snapshot schedule
# ceph fs snap-schedule list /
/ 8h 6h
# ceph fs snap-schedule status /
{"fs": "cephfs1", "subvol": null, "path": "/", "rel_path": "/",
"schedule": "8h", "retention": {"h": 6}, "start": "2021-11-03T00:00:00",
"created": "2021-11-03T16:41:45", "first": null, "last": null,
"last_pruned": null, "created_count": 0, "pruned_count": 0, "active": true}
I think this should mean a snapshot is created every 8 hours, and the
last 6 snapshots are retained.
# ll /cephfs/.snap
total 0
drwxr-xr-x 2 root root 0 nov 2 13:58 ./
drwxr-xr-x 3 root root 1 nov 2 13:58 ../
drwxr-xr-x 3 root root 1 nov 2 13:58 scheduled-2021-11-02-16_00_00/
drwxr-xr-x 3 root root 1 nov 2 13:58 scheduled-2021-11-04-00_00_00/
drwxr-xr-x 3 root root 1 nov 2 13:58 scheduled-2021-11-04-08_00_00/
drwxr-xr-x 3 root root 1 nov 2 13:58 scheduled-2021-11-04-16_00_00/
drwxr-xr-x 3 root root 1 nov 2 13:58 scheduled-2021-11-05-00_00_00/
drwxr-xr-x 3 root root 1 nov 2 13:58 scheduled-2021-11-05-08_00_00/
Snapshotting seems to stop after 6 snapshots have been created (today is
2021-11-07). This is after I've already tried removing the schedule and
recreating it.
A similar problem was reported earlier this month:
https://lists.ceph.io/hyperkitty/list/ceph-users@xxxxxxx/thread/IWOX3FWI2CAQLDJ73PHTTA76EY3RJRDY/
I'm new to ceph, is this a bug?
Do you see any tracebacks in (ceph-mgr) logs related to snap_schedule plugin?
No, just this:
# cat /var/log/ceph/ceph-mgr.miles.log | grep snap
2021-11-08T07:59:39.518+0000 7fd31d7fa640 0 [snap_schedule INFO
mgr_util] scanning for idle connections..
2021-11-08T07:59:39.518+0000 7fd31d7fa640 0 [snap_schedule INFO
mgr_util] cleaning up connections: []
2021-11-08T08:00:09.518+0000 7fd31d7fa640 0 [snap_schedule INFO
mgr_util] scanning for idle connections..
2021-11-08T08:00:09.518+0000 7fd31d7fa640 0 [snap_schedule INFO
mgr_util] cleaning up connections: []
2021-11-08T08:00:39.518+0000 7fd31d7fa640 0 [snap_schedule INFO
mgr_util] scanning for idle connections..
2021-11-08T08:00:39.518+0000 7fd31d7fa640 0 [snap_schedule INFO
mgr_util] cleaning up connections: []
repeated twice a minute.
The snap schedule is still there:
# ceph fs snap-schedule list /
/ 8h 6h
Joost
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