[sheepdog-users] sheepdog 0.9 vs live migration

Jónás Zsolt jonas.zsolt at naxonet.hu
Fri Dec 12 10:16:30 CET 2014


I'm testing sheepdog 0.9 on two hosts.

I tried to do kvm live migration:
$ virsh migrate --live test-vm qemu+ssh://test-host2/system

but I get the following error:
error: internal error: process exited while connecting to monitor: 
qemu-system-x86_64: -drive 
cannot get vdi info, VDI is already locked, test-vm-disk 0
qemu-system-x86_64: -drive 
could not open disk image sheepdog:test-vm-disk: Could not open 
'sheepdog:test-vm-disk': Input/output error

the VDI is locked by dog:
$ dog vdi lock list
VDI | owner node
test-vm-disk | IPv4 ip:test-host1 port:7000

if I remove the VDI lock the live migration works correctly:
$ dog vdi lock unlock test-vm-disk

but after the live migration I can't relock the VDI.

VM disk definition:
     <disk type='network' device='disk'>
       <driver name='qemu' type='qcow2' cache='none'/>
       <source protocol='sheepdog' name='test-vm-disk'/>
       <target dev='vda' bus='virtio'/>

How can I do the live migration safely with sheepdog 0.9?
Or what am I doing wrong?

os: Ubuntu 14.04.1 LTS
qemu: QEMU emulator version 2.0.0 (Debian 2.0.0+dfsg-2ubuntu1.7)
sheepdog: Sheepdog daemon version 0.9.0

Thank you for your help!


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