Fwd: Scheduled RBD volume snapshots without mirrioring (-schedule)

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Hi Ilya

Thank you very much for clarification. I created a cronjob based script which is available here https://github.com/oposs/rbd_snapshot_manager

Tobias 


----- Ursprüngliche Mail -----
Von: "Ilya Dryomov" <idryomov@xxxxxxxxx>
An: "Tobias Bossert" <bossert@xxxxxxxxxx>
CC: "ceph-users" <ceph-users@xxxxxxx>
Gesendet: Sonntag, 20. November 2022 13:56:16
Betreff: Re:  Scheduled RBD volume snapshots without mirrioring (-schedule)

On Fri, Nov 18, 2022 at 3:46 PM Tobias Bossert <bossert@xxxxxxxxxx> wrote:
>
> Dear List
>
> I'm searching for a way to automate the snapshot creation/cleanup of RBD volumes. Ideally, there would be something like the "Snapshot Scheduler for cephfs"[1] but I understand
> this is not as "easy" with RBD devices since ceph has no idea of the overlaying filesystem.
>
> So what I basically need is:
>
> - Create a snapshot of RBD image X, every N hours
> - Cleanup/thin-out snapshots which are older than Y
> - I do not care about mirroring
> - I do not care about possible filesystem inconsistencies
>
>
> Is there a way to accomplish such a behavior within ceph or do I have to relay on external scripts (If yes, is anyone aware of such a script?)

Hi Tobias,

I don't think there is a way to accomplish that within Ceph.  The
existing RBD snapshot scheduling functionality is limited to mirror
snapshots.

I have seen a few referenced on this mailing list -- typically they
are under a few dozen lines of Bash so people tend to write them from
scratch tailored specifically to their environment (OpenStack, etc).

Thanks,

                Ilya

>
>
> [1] https://docs.ceph.com/en/quincy/cephfs/snap-schedule/
>
>
> Many thanks in advance
>
> Tobias
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