[libvirt] Migration failure related to EOF from Monitor

[Shu Ming]

On 2012-2-22 21:46, Shradha Shah wrote:
> Hello All,
>
> I am trying to migrate a KVM guest while implementing the patches for PCI-Passthrough of SRIOV Vf's and
> I repeatedly see the following error:
> [root at c6100k cwd]# virsh migrate --live dibenchvm1 qemu+ssh://c6100l.uk.level5networks.com/system
> error: operation failed: migration job: unexpectedly failed
Are you sure your ssh setting in the destination host is correct?  
Maybe, you can try qemu+tcp to ignore ssh setting.

> I have turned on debugging in /etc/libvirt/libvirtd.conf and I see the following debug in
> /var/log/libvirt/libvirtd.log
>
> 10:37:26.632: 2449: error : qemuMonitorIO:584 : internal error End of file from monitor
> 10:37:26.632: 2449: debug : qemuMonitorIO:617 : Error on monitor internal error End of file from monitor
> 10:37:26.632: 2449: debug : virEventPollUpdateHandle:145 : Update handle w=21 e=12
> 10:37:26.632: 2449: debug : virEventPollInterruptLocked:676 : Skip interrupt, 1 -1497479264
> 10:37:26.632: 2449: debug : qemuMonitorIO:640 : Triggering EOF callback
> 10:37:26.632: 2449: debug : qemuProcessHandleMonitorEOF:125 : Received EOF on 0x7f588c003540 'dibenchvm1'
> 10:37:26.632: 2449: debug : qemuProcessStop:3271 : Shutting down VM 'dibenchvm1' pid=18739 migrated=0
> 10:37:26.632: 2449: debug : qemuMonitorClose:765 : mon=0x7f588c00c7f0
> 10:37:26.632: 2449: debug : virEventPollRemoveHandle:172 : Remove handle w=21
> 10:37:26.633: 2449: debug : virEventPollRemoveHandle:185 : mark delete 9 20
> 10:37:26.633: 2449: debug : virEventPollInterruptLocked:676 : Skip interrupt, 1 -1497479264
> 10:37:26.633: 2449: debug : qemuProcessKill:3217 : vm=dibenchvm1 pid=18739 gracefully=0
> 10:37:26.633: 2449: debug : qemuProcessAutoDestroyRemove:3736 : vm=dibenchvm1 uuid=a4452511-0f97-734a-dbcc-f4c66f821956
> 10:37:26.633: 2449: debug : virSecurityDACRestoreSecurityAllLabel:504 : Restoring security label on dibenchvm1 migrated=0
>
> May I ask for suggestions on how I can debug the monitor and find out the reason why the qemu monitor dies?
>
>
> Many Thanks,
> Regards,
> Shradha Shah
>
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-- 
Shu Ming<shuming at linux.vnet.ibm.com>
IBM China Systems and Technology Laboratory