[ceph-users] Re : bad crc/signature errors

Olivier Bonvalet ceph.list at daevel.fr
Thu Oct 5 00:03:48 PDT 2017


I also see that, but on 4.9.52 and 4.13.3 kernel.

I also have some kernel panic, but don't know if it's related (RBD are
mapped on Xen hosts).

Le jeudi 05 octobre 2017 à 05:53 +0000, Adrian Saul a écrit :
> We see the same messages and are similarly on a 4.4 KRBD version that
> is affected by this.
> 
> I have seen no impact from it so far that I know about
> 
> 
> > -----Original Message-----
> > From: ceph-users [mailto:ceph-users-bounces at lists.ceph.com] On
> > Behalf Of
> > Jason Dillaman
> > Sent: Thursday, 5 October 2017 5:45 AM
> > To: Gregory Farnum <gfarnum at redhat.com>
> > Cc: ceph-users <ceph-users at lists.ceph.com>; Josy
> > <josy at colossuscloudtech.com>
> > Subject: Re: [ceph-users] bad crc/signature errors
> > 
> > Perhaps this is related to a known issue on some 4.4 and later
> > kernels [1]
> > where the stable write flag was not preserved by the kernel?
> > 
> > [1] http://tracker.ceph.com/issues/19275
> > 
> > On Wed, Oct 4, 2017 at 2:36 PM, Gregory Farnum <gfarnum at redhat.com>
> > wrote:
> > > That message indicates that the checksums of messages between
> > > your
> > > kernel client and OSD are incorrect. It could be actual physical
> > > transmission errors, but if you don't see other issues then this
> > > isn't
> > > fatal; they can recover from it.
> > > 
> > > On Wed, Oct 4, 2017 at 8:52 AM Josy <josy at colossuscloudtech.com>
> > 
> > wrote:
> > > > 
> > > > Hi,
> > > > 
> > > > We have setup a cluster with 8 OSD servers (31 disks)
> > > > 
> > > > Ceph health is Ok.
> > > > --------------
> > > > [root at las1-1-44 ~]# ceph -s
> > > >    cluster:
> > > >      id:     de296604-d85c-46ab-a3af-add3367f0e6d
> > > >      health: HEALTH_OK
> > > > 
> > > >    services:
> > > >      mon: 3 daemons, quorum
> > > > ceph-las-mon-a1,ceph-las-mon-a2,ceph-las-mon-a3
> > > >      mgr: ceph-las-mon-a1(active), standbys: ceph-las-mon-a2
> > > >      osd: 31 osds: 31 up, 31 in
> > > > 
> > > >    data:
> > > >      pools:   4 pools, 510 pgs
> > > >      objects: 459k objects, 1800 GB
> > > >      usage:   5288 GB used, 24461 GB / 29749 GB avail
> > > >      pgs:     510 active+clean
> > > > ====================
> > > > 
> > > > We created a pool and mounted it as RBD in one of the client
> > > > server.
> > > > While adding data to it, we see this below error :
> > > > 
> > > > ========
> > > > [939656.039750] libceph: osd20 10.255.0.9:6808 bad
> > > > crc/signature
> > > > [939656.041079] libceph: osd16 10.255.0.8:6816 bad
> > > > crc/signature
> > > > [939735.627456] libceph: osd11 10.255.0.7:6800 bad
> > > > crc/signature
> > > > [939735.628293] libceph: osd30 10.255.0.11:6804 bad
> > > > crc/signature
> > > > 
> > > > =========
> > > > 
> > > > Can anyone explain what is this and if I can fix it ?
> > > > 
> > > > 
> > > > _______________________________________________
> > > > ceph-users mailing list
> > > > ceph-users at lists.ceph.com
> > > > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
> > > 
> > > 
> > > _______________________________________________
> > > ceph-users mailing list
> > > ceph-users at lists.ceph.com
> > > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
> > > 
> > 
> > 
> > 
> > --
> > Jason
> > _______________________________________________
> > ceph-users mailing list
> > ceph-users at lists.ceph.com
> > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
> 
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