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

[Sahina Bose]

On 06/06/2014 02:03 PM, Joop wrote:
> 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 :-) )


Yes, this is a bug I would think. For a gluster only cluster, the 
storage domain is not relevant.

Could you log a bug with the error attached, and we will try to fix 
this. If it's a simple enough fix, we could backport it to 3.4

thanks!
sahina

>
> Joop
>
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