[Users] Nodes lose storage at random

[Johan Kooijman]

Gents,

I'm sending this email for archiving purposes:
It's been a while since my last update on this topic. It turned out that
although only one node, randomly, at a time lost connection to storage, the
issue was not at all with ovirt, but with the storage.

I'd like to refer to these 2 topics for more information:
http://lists.freebsd.org/pipermail/freebsd-net/2014-March/038061.html and
http://lists.freebsd.org/pipermail/freebsd-net/2014-February/037967.html.

Keywords: ovirt freebsd 9.2 zfs ixgbe intel 10gbit NFS


On Mon, Feb 24, 2014 at 3:55 PM, Ronen Hod <rhod at redhat.com> wrote:

> On 02/24/2014 11:48 AM, Nir Soffer wrote:
>
>> ----- Original Message -----
>>
>>> From: "Johan Kooijman" <mail at johankooijman.com>
>>> To: "Nir Soffer" <nsoffer at redhat.com>
>>> Cc: "users" <users at ovirt.org>
>>> Sent: Monday, February 24, 2014 2:45:59 AM
>>> Subject: Re: [Users] Nodes lose storage at random
>>>
>>> Interestingly enough - same thing happened today, around the same time.
>>> Logs from this host are attached.
>>>
>>> Around 1:10 AM stuff starts to go wrong again. Same pattern - we reboot
>>> the
>>> node and the node is fine again.
>>>
>> So we made some progress, we know that it is not a problem with old
>> kernel.
>>
>> In messages we see the same picture:
>>
>> 1. sanlock fail to renew the lease
>> 2. after 80 secodns, kill vdsm
>> 3. sanlock and vdsm cannot access the storage
>> 4. kernel complain about nfs server timeouts
>>     (explains why sanlock failed to renew the lease)
>> 5. after reboot, nfs is accessible again
>> 6. after few days goto step 1
>>
>> This looks like kernel nfs issue.
>>
>> Could be also kvm issue (running bsd on the one of the vm?)
>>
>> Could be also some incompatibility with the nfs server - maybe you are
>> using
>> esoteric configuration options?
>>
>> CCing Ronen, in case this is related to kvm.
>>
>
> Not seems to be related to KVM.
> Adding Ric Wheeler.
>
> Ronen.
>
>
>> thread: http://lists.ovirt.org/pipermail/users/2014-February/021507.html
>>
>> Nir
>>
>
>


-- 
Met vriendelijke groeten / With kind regards,
Johan Kooijman

T +31(0) 6 43 44 45 27
F +31(0) 162 82 00 01
E mail at johankooijman.com
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