Hello,
thanks for the reply.
Before the restart there was HEALTH OK and for a few moments "slow request".
Maybe helpful:
# ceph-journal-tool event get summaryEvents by type:
COMMITED: 12188
EXPORT: 196
IMPORTFINISH: 197
IMPORTSTART: 197
OPEN: 28096
SESSION: 2
SESSIONS: 64
SLAVEUPDATE: 8440
SUBTREEMAP: 256
UPDATE: 124222
Errors: 0
Yan, Zheng <ukernel@xxxxxxxxx> schrieb am Fr., 26. Okt. 2018, 09:13:
On Fri, Oct 26, 2018 at 2:41 AM Johannes Schlueter
<bleaktradition@xxxxxxxxx> wrote:
>
> Hello,
>
> os: ubuntu bionic lts
> ceph v12.2.7 luminous (on one node we updated to ceph-mds 12.2.8 with no luck)
> 2 mds and 1 backup mds
>
> we just experienced a problem while restarting a mds. As it has begun to replay the journal, the node ran out of memory.
> A restart later, after giving about 175GB of swapfile, it still breaks down.
>
> As mentioned in an maillist entry with similar problem earlier, we restarted all mds nodes causing all nodes to leak. Now they just switch around as they break down and the backup starts the replay.
>
Did you see warning "Behind on trimming" before mds restart?
> Sincerely
>
> Patrick
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> ceph-users@xxxxxxxxxxxxxx
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