Re: [Qemu-devel] virsh live migration w/o shared storage fails with error as vm is not running

[chandrashekar shastri <cshastri@linux.vnet.ibm.com>]

On 06/13/2013 02:14 PM, Stefan Hajnoczi wrote:
> On Thu, Jun 13, 2013 at 10:31:04AM +0530, chandrashekar shastri wrote:
>> We are testing the upstream KVM with :
>>
>> Kernel, Qemu, Libvirt, Virt-Manager is built from the source (git).
>>
>> kernel version : 3.9.0+
>> qemu version : QEMU emulator version 1.5.0
>> libvirt version : 1.0.5
>> virt-install : 0.600.3
>>
>> I have followed the below steps to test the "Live migration w/o
>> shared storage" feature :
>>
>> 1. Created the qemu-img create -f qcow2 vm.qcow2 12G on the
>> destination host which is same as the source.
>> 2. Started the guest on the source
>> 3. Started the vncdisplay to monitor the guest
>> 4. Initiated the migration "virsh migrate --live rhel64-64
>> qemu+ssh://9.126.89.202/system --verbose --copy-storage-all"
>> 5. It started the copying the storage from souce to destination
>> (conitinously monitored it was growing)
>> 6. Guest on the destination was paused and was running on the source
>> 7. At some point the VM on the source shutdown and got an error on
>> the vnc display as " Viewport:    write: Broken pipe (32)" and the
>> VM on the destination was undefined.
>>
>> Below is the libvirt debug log, please let me with your comments.
>>
>> Debug log:
>> --------------
> What about /var/log/libvirt/qemu/rhel64-64.log?  That is the QEMU
> command-line and stderr log.
I have attached all source and destination logs, including the sosreport 
of both source and destination in the bug.
https://bugs.launchpad.net/ubuntu/+source/libvirt/+bug/1192499
>
> Also can you try without copy-storage-all just to see if migration
> completes successfully?  The guest will act weird once it migrates since
> the disk is zeroed but it will isolate the failure to
> --copy-storage-all.
Without copy-storage-all (meaning with NFS shared storage the migration 
works fine).
> Stefan
>
Please let me know if you need more info.

Thanks,
Shastri