XFS crashes on VMs

[Shrinand Javadekar]

Thanks Eric,

We ran xfs_repair and were able to get it back into a running state.
This is fine for a test & dev but in production it won't be
acceptable. What other data do we need to get to the bottom of this?

On Wed, May 27, 2015 at 4:27 PM, Eric Sandeen <sandeen at sandeen.net> wrote:
> That's not a crash. That is xfs detecting on disk corruption which likely happened at some time prior. You should unmount and run xfs_repair, possibly with –n first if you would like to do a dry run to see what it might do.  If you get fresh corruption after a full repair, then that becomes more interesting. It's possible that you have a problem with the underlying block layer or it's possible that it is an xfs bug -  but I think this is not something that we have seen before.
>
> Eric
>
>> On May 27, 2015, at 6:06 PM, Shrinand Javadekar <shrinand at maginatics.com> wrote:
>>
>> Hi,
>>
>> I am running Openstack Swift in a VM with XFS as the underlying
>> filesystem. This is generating a metadata heavy workload on XFS.
>> Essentially, it is creating a new directory and a new file (256KB) in
>> that directory. This file has extended attributes of size 243 bytes.
>>
>> I am seeing the following two crashes of the machine:
>>
>> http://pastie.org/pastes/10210974/text?key=xdmfvaocvawnyfmkb06zg
>>
>> AND
>>
>> http://pastie.org/pastes/10210975/text?key=rkiljsdaucrk7frprzgqq
>>
>> I have only seen these when running in a VM. We have run several tests
>> on physical server but have never seen these problems.
>>
>> Are there any known issues with XFS running on VMs?
>>
>> Thanks in advance.
>> -Shri
>>
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