[ovirt-users] Live migration - quest VM stall

[Markus Stockhausen]

Hello,

at the moment we are investigating stalls of Windows XP VMs during
live migration. Our environment consists of:

- FC20 hypervisor nodes
- qemu 1.6.2
- OVirt 3.4.1
- Guest: Windows XP SP2
- VM Disks: Virtio & IDE tested
- SPICE / VNC: both tested
- Balloon: With & without tested
- Cluster compatibility: 3.4 - CPU Nehalem

After 2-10 live migrations the Windows XP guest is no longer responsive.

First of all we thougth that it might be related to SPICE because we were
no longer able to logon to the console. So we installed XP telnet server in
the VM but that showed a similar behaviour:

- The telnet welcome dialogue is always available (network seems ok)
- Sometime after a live migration  if you enter the password the telnet
  gives no response.
In parallel the SPICE console allows to move open windows. But as soon
as one clicks on the start the menu the system gives no response.

Even after updating to qemu 2.0 with virt-preview respositories the
behaviour stays the same. Looks like the system cannot access

Any ideas?

Markus
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