[Gluster-users] postgresql is unable to create a table in gluster volume

[Vijay Bellur]

On Thu, May 4, 2017 at 3:19 AM, Jiffin Tony Thottan <jthottan at redhat.com>
wrote:

>
>
> On 04/05/17 02:03, Praveen George wrote:
>
> Hi Team,
>
> We’ve been intermittently seeing issues where postgresql is unable to
> create a table, or some info is missing.
>
> Postgresql logs the following error:
>
> ERROR:  unexpected data beyond EOF in block 53 of relation base/16384/12009
> HINT:  This has been seen to occur with buggy kernels; consider updating
> your system.
>
> We are using the k8s PV/PVC to bind the volumes to the containers and
> using the gluster plugin to mount the volumes on the worker nodes and take
> it into the containers.
>
> The issue occurs regardless of whether the  k8s spec specifies mounting of
> the pv using the pv provider or mount the gluster volume directly.
>
> Just to check if the issue is with the glusterfs client, we mount the
> volume using NFS (NFS on the client talking to gluster on the master), the
> issue doesn’t occur. However, with the NFS client talking directly to _one_
> of the gluster masters; this means that if that master fails, it will not
> failover to the other gluster master - we thus lose gluster HA if we go
> this route.
>
>
> If you are interested there are HA solutions available with NFS. It
> depends on NFS solution which u are trying, if it is gluster nfs(integrated
> nfs server with gluster) then use ctdb and for NFS-Ganesha , we already
> have an integrated solution with pacemaker/corosync
>
> Please update ur gluster version since it EOLed, you don't receive any
> more update for that version.
>
>

Do you notice any errors in the fuse client logs when postgresql complains
about the error?

It might be useful to turn off all the performance translators in gluster
and check if the problem persists.

Regards,
Vijay
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