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[libvirt] Migration failure related to EOF from Monitor



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 c6100k cwd]# virsh migrate --live dibenchvm1 qemu+ssh://c6100l.uk.level5networks.com/system
error: operation failed: migration job: unexpectedly failed

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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