[Users] VM has paused due to unknown storage error

[David Wilson]

Hi everyone,

Some feedbackon this error, and a question I hope that someone could 
possibly assist with.
I managed to get the guest running again byusing dd and qemu-img to 
export the filesystem image and base image, convert to raw format and 
run a fsck on the looped partition.
When mounted as a loop filesystem, fsck easily repaired it.

Any ideas why oVirt kept pausing the guest and did not allow fsck to 
repair the filesystem?




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<http://facebook.com/dcdata>

Kind regards,

David Wilson
CNS,CLS, LINUX+, CLA, DCTS, LPIC3
*LinuxTech CC t/a DcData*
CK number: 2001/058368/23
*Website:* 	http://www.dcdata.co.za
*Support:* 	+27(0)860-1-LINUX
*Mobile:* 	+27(0)824147413
*Tel:* 	+27(0)333446100
*Fax:* 	+27(0)866878971

On 12/02/2012 11:17 AM, David Wilson wrote:
> Hi everyone,
>
> Sunday fun :)
>
> One of our critical Linux VMs ran out of disk space. I cleared up 
> space by removing old application logs within the guest, rebooted the 
> guest and was presented with the following information message during 
> bootup when the filesystem ext3/4 scan runs:
> /Clearing orhpaned inode ...../
> Shortly after this message the the guest is paused by oVirt and the 
> "VM has paused due to unknown storage error" message is displayed in 
> the oVirt web GUI.
>
> On the physical node itself, I found the following error 
> in/var/log/vdsm/vdsm.log:
> /libvirtEventLoop::INFO::2012-12-02 
> 09:05:50,296::libvirtvm::1965::vm.Vm::(_onAbnormalStop) 
> vmId=`23b9212c-1e25-4003-aa18-b1e819bf6bb1`::abnormal vm stop device 
> ide0-0-1 error eother/
>
> Any ideas on how to get more informationon what exactly the error is?
>
> I've tried booting the guest into rescue mode, run a manual fsck on 
> the logical volume but each time the guest is automaticall paused due 
> to the "unknown storage error".
>
> We are using a FC SAN for storage, sowhat I've decided to try is 
> export the disk using "dd" on the physical node and then try repairing 
> it by mounting it as a loop filesystem on another physical server, and 
> then use "dd" to import it back in again.
>
> Is this the right approach to take to get the system back online?
>
>
>
> -- 
>
>
> Get important Linux and industry-related news at: facebook.com/dcdata 
> <http://facebook.com/dcdata>
>
> Kind regards,
>
> David Wilson
> CNS,CLS, LINUX+, CLA, DCTS, LPIC3
> *LinuxTech CC t/a DcData*
> CK number: 2001/058368/23
> *Website:* 	http://www.dcdata.co.za
> *Support:* 	+27(0)860-1-LINUX
> *Mobile:* 	+27(0)824147413
> *Tel:* 	+27(0)333446100
> *Fax:* 	+27(0)866878971
>
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