Hi Greg,

Actually our cluster is pretty empty, but we suspect we had a temporary
network disconnection to one of our OSD, not sure if this caused the
problem.

Anyway we don't mind try the method you mentioned, how can we do that?

Regards,
Luke

On Saturday, April 26, 2014, Gregory Farnum <g...@inktank.com> wrote:

> 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.abka...@mimos.my> 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-de...@vger.kernel.org <javascript:;>';
> ceph-users@lists.ceph.com <javascript:;>
> > 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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