[Linux-cluster] unable to live migrate a vm in rh el 6: Migration unexpectedly failed

[Gianluca Cecchi]

I have two rh el 6 systems configured with rhcs and clvmd.
General cluster services seems to be ok.
As I'm not able to successfully migrate a vm through clusvcadm, I'm
now downsizing the problem to direct virsh command that fails when
called from clusvcadm.
The guest's storage is composed by two disks that are clustered logical volumes

vm definition is
<vm name="exorapr1" recovery="relocate" use_virsh="1"
xmlfile="/etc/libvirt/qemu/exorapr1.xml"/>

the xml file is the same at both hosts

At first I verified correct startup on both nodes this way:
- vm running on host2 with resource recovery policy set "relocate"
- shutdown vm from inside its operating system
- the cluster notices this and correctly restarts it on host1
- shutdown vm from inside its operating system
- the cluster notices this and correctly restarts it on host1


I have also ssh equivalence in place (for the intracluster names) so
that I can run from host2:

[host2 ] # virsh -c  qemu+ssh://intrarhev1/system list

without need of password input.

If I try the command used by the cluster itself (after stopping the vm
from clusvcadm):

# virsh migrate --live exorapr1 qemu+ssh://intrarhev1/system
I receive:
error: operation failed: Migration unexpectedly failed

On host2:
[host2 ] # virsh list
 Id Name                 State
----------------------------------
  3 exorapr1             running

In messages:
Mar  4 14:27:30 host2 libvirtd: 14:27:30.527: error :
qemuDomainWaitForMigrationComplete:5394 : operation failed: Migration
unexpectedly failed

Setting this:
[root at host2 libvirt]# export LIBVIRT_DEBUG=1
[root at host2 libvirt]# export LIBVIRT_LOG_OUTPUTS="1:file:/tmp/virsh.log"

I get the file I'm going to attach (due to migration happening with
intracluster network, the names are intrarhev1 and intrarhev2 on that
LAN)

It seems no more information in the file....
Any hints on further debugging?
If there is not any big mistake at my side I could also open an
official case, as these two systems are under subscription
maintenance...

Thanks in advance,
Gianluca
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