On Fri, Dec 15, 2023 at 12:52 PM Eugen Block <eblock@xxxxxx> wrote:
>
> Hi,
>
> I've been searching and trying things but to no avail yet.
> This is uncritical because it's a test cluster only, but I'd still
> like to have a solution in case this somehow will make it into our
> production clusters.
> It's an Openstack Victoria Cloud with Ceph backend. If one tries to
> remove a glance image (openstack image delete {UUID}' which usually
> has a protected snapshot it will fail to do so, but apparently the
> snapshot is actually moved to the trash namespace. And since it is
> protected, I can't remove it:
>
> storage01:~ # rbd -p images snap ls 278ffe2b-67a7-40d0-87b7-903f2fc9c3b4 --all
> SNAPID NAME SIZE PROTECTED
> TIMESTAMP NAMESPACE
> 159 1a97db13-307e-4820-8dc2-8549e9ba1ad7 39 MiB Thu
> Dec 14 08:29:56 2023 trash (snap)
>
> storage01:~ # rbd snap rm --snap-id 159
> images/278ffe2b-67a7-40d0-87b7-903f2fc9c3b4
> rbd: snapshot id 159 is protected from removal.
>
> storage01:~ # rbd snap ls images/278ffe2b-67a7-40d0-87b7-903f2fc9c3b4
> storage01:~ #
>
> This is a small image and only a test environment, but these orphans
> could potentially fill up lots of space. In a newer openstack version
> (I tried with Antelope) this doesn't seem to work like that anymore,
> so that's good. But how would I get rid of that trash snapshot in this
> cluster?
Hi Eugen,
This means that there is at least one clone based off of that snapshot.
You should be able to identify it with:
$ rbd children --all --snap-id 159 images/278ffe2b-67a7-40d0-87b7-903f2fc9c3b4
Get rid of the clone(s) and the snapshot should get removed
automatically.
Thanks,
Ilya
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