Hi,
we currently do not understand how we got into this situation, nevertheless we have a set of rbd images which has the same SNAPID in the same pool.
kjetil@sc2-r10-u09:~$ rbd snap ls _qa-staging_foo_partial_db
SNAPID NAME SIZE
478104 2017-11-29.001 20000 MB
kjetil@sc2-r10-u09:~$ rbd snap ls _qa-staging_bar_decimated_be
SNAPID NAME SIZE
478104 2017-11-27.001 30720 kB
(We have a small collection of these)
I currently believe this is bad - is this correct that this is bad ?
My rudimentary understanding is that snapid is monotonically increasing, and unique within a pool. At which point this is bad at the point a snapshot gets removed, snapid would get put into removed_snaps, and at some point the osd's would go trimming and might prematurely get rid of clones.
Cheers,
-- Kjetil Joergensen <kjetil@xxxxxxxxxxxx>
SRE, Medallia Inc
SRE, Medallia Inc
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