[ovirt-users] Issue / strange behavior with GlusterFS nodes

[Joop]

René Koch wrote:
> Hi,
>
> I have the following oVirt setup:
> 2 storage hosts with GlusterFS (replicated) - will be extended to 4 
> hosts (distributed-replicated)
> 4 virtualization hosts
> 1 datacenter
> 2 clusters (1 only for virtualization, 1 only for GlusterFS)
>
> The strange thing is now:
> One of the 2 GlusterFS hosts (these hosts and the Gluster volumes are 
> managed by oVirt) fails to mount one of the storage domains, but I can 
> mount it manually.
>
> So the first question is: why should these hosts mount the storage 
> domains? They are in a cluster without virtualization, so it's not 
> possible to run virtual machines on these hosts. I think they try to 
> mount the storage domains because the storage domains are attached to 
> the data center, but imho the cluster should be checked as well if 
> virtualization is enabled.
>
> So I was thinking of moving the GlusterFS cluster to a new data center 
> without storage domains, but this is impossible as Gluster volumes are 
> created. The only possibility would be to remove the Gluster volume.
>
> So do you have any idea how I can solve this issue? I mean the Gluster 
> volume is working fine, but it's really disturbing that I get an error 
> message every 5 minutes.
>
Just to let you know you're not the only one with this problem. I have 
had it too a couple of times and still don't know the right incantation 
to get rid of it. I have the same setup: 2 clusters, storage and virt, 2 
nodes each, one datacenter. Currently on 3.4.1 and had the problem on 
the 3.2/3 series. For me it seemed related to upgrading but that could 
be just chance. It might as well be related to a complete 
shutdown/restart of all machines ( this test setup is not behind a ups 
which gives some rare opportunities to troubleshoot problems :-) )

Joop