On Wed, Aug 24, 2016 at 4:56 PM, Ivan Grcic <ivan.grcic@xxxxxxxxx> wrote:
> Dear Cephers,
>
> For some time now I am running a small Ceph cluster made of 4OSD +
> 1MON Servers, and evaluating possible Ceph usages in our storage
> infrastructure. Until few weeks ago I was running Hammer release,
> using mostly RBD Clients mounting replicated pool images. Everything
> was running stable.
>
> Recently I updated to Jewel v10.2.2 (actually did a clean install).
> Last week I tested Ceph Tiering capabilities, backed by an erasure
> Coded Pools. Everything was running just fine until one moment when I
> couldn't mount my images anymore. I got following error when mounting
> rbd:
>
> sudo rbd map test
> rbd: sysfs write failed
> In some cases useful info is found in syslog - try "dmesg | tail" or so.
> rbd: map failed: (5) Input/output error
>
> Error is backed up by dumping a several MB of hex osdmap in
> /var/log/syslog and /var/log/kern.log, filling several GB of logs in a
> short time (dump attached)
>
> I thought I must have done something wrong, while I did a lot of
> testing and in the process I recreated lots of pools, and shuffled a
> lot of data because of testing various crushset combinations.
>
> So I began from start, installing cluster again. Everything was
> working for some time, but the error occurred again (also for normal
> replicated pool)
>
> Ceph Servers and clients are running Ubuntu 14.04 (kernel 3.19)
>
> Cluster state is HEALTH_OK
>
> RBD Images have new features disabled:
> rbd -p ecpool feature disable test exclusive-lock, object-map,
> fast-diff, deep-flatten
>
> Does anyone have some tips here, has similar already happened to
> anyone? Should I just go on and do a v4.4 kernel update?
Hi Ivan,
Could you please do
$ ceph osd getmap 3518 >/tmp/osdmap
and attach /tmp/osdmap?
Thanks,
Ilya
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