[ceph-users] OSD failure test freezes the cluster

Bishoy Mikhael b.s.mikhael at gmail.com
Tue Nov 21 10:28:03 PST 2017


Bump!


On Tue, Nov 21, 2017 at 12:34 AM Gmail <b.s.mikhael at gmail.com> wrote:

> Hi All,
>
> I was performing an OSD failure test on a 3 node Ceph cluster configured
> as follows:
> Ceph version 12.2.1
> 3 x MDS (one per node)
> 3 x MON (one per node)
> 3 x MGR (one per node)
> 15 x OSDs (5 per node)
>
> Ceph filesystem was mounted on a different node using Ceph kernel block
> device driver.
>
> I failed one of the OSD drives by removing it from the SCSI bus, while
> consistently writing 1MB files to the cluster.
>
> Once the drive was failed, the write process stopped, ceph -s command
> timeout, the three MON, MDS and MGR daemons status shows that they received
> a sigkill.
>
> Any clue on what’s going on on the cluster?
>
> Regards,
> Bishoy
>
>
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