Re: [ceph-users] Ceph mds laggy and failed assert in function replay mds/journal.cc

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Hmm, it looks like your on-disk SessionMap is horrendously out of
date. Did your cluster get full at some point?

In any case, we're working on tools to repair this now but they aren't
ready for use yet. Probably the only thing you could do is create an
empty sessionmap with a higher version than the ones the journal
refers to, but that might have other fallout effects...
-Greg
Software Engineer #42 @ http://inktank.com | http://ceph.com


On Fri, Apr 25, 2014 at 2:57 AM, Mohd Bazli Ab Karim
<bazli.abkarim@xxxxxxxx> wrote:
> More logs. I ran ceph-mds  with debug-mds=20.
>
> -2> 2014-04-25 17:47:54.839672 7f0d6f3f0700 10 mds.0.journal EMetaBlob.replay inotable tablev 4316124 <= table 4317932
> -1> 2014-04-25 17:47:54.839674 7f0d6f3f0700 10 mds.0.journal EMetaBlob.replay sessionmap v8632368 -(1|2) == table 7239603 prealloc [1000041df86~1] used 1000041db9e
>   0> 2014-04-25 17:47:54.840733 7f0d6f3f0700 -1 mds/journal.cc: In function 'void EMetaBlob::replay(MDS*, LogSegment*, MDSlaveUpdate*)' thread 7f0d6f3f0700 time 2014-04-25 17:47:54.839688 mds/journal.cc: 1303: FAILED assert(session)
>
> Please look at the attachment for more details.
>
> Regards,
> Bazli
>
> From: Mohd Bazli Ab Karim
> Sent: Friday, April 25, 2014 12:26 PM
> To: 'ceph-devel@xxxxxxxxxxxxxxx'; ceph-users@xxxxxxxxxxxxxx
> Subject: Ceph mds laggy and failed assert in function replay mds/journal.cc
>
> Dear Ceph-devel, ceph-users,
>
> I am currently facing issue with my ceph mds server. Ceph-mds daemon does not want to bring up back.
> Tried running that manually with ceph-mds -i mon01 -d but it shows that it stucks at failed assert(session) line 1303 in mds/journal.cc and aborted.
>
> Can someone shed some light in this issue.
> ceph version 0.72.2 (a913ded2ff138aefb8cb84d347d72164099cfd60)
>
> Let me know if I need to send log with debug enabled.
>
> Regards,
> Bazli
>
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