2.0RC1, Live Migration VM Crashes after a few minutes

[mdevilz]

What is your shared storage ? nfs ?

also, what is your centos vm kernel version ?

I'm downloading centos 6.2 for make some tests.

I also am using a shared iSCSI LVM storage, and here is my uname -a is

Linux local.local 2.6.32-220.4.1.el6.x86_64 #1 SMP Mon Jan 23 17:20:44 CST 2012 x86_64 x86_64 x86_64 GNU/Linux

100.conf

root@proton:/etc/pve/nodes/proton/qemu-server# cat 100.conf
bootdisk: virtio0
cores: 2
ide2: none,media=cdrom
memory: 2048
name: city17
net0: virtio=00:26:B9:43:9C:36,bridge=vmbr0
ostype: l26
sockets: 1
virtio0: iscsi-lvm:vm-100-disk-1

 

[spirit]

good news, I can reproduce the bug

centos 6.2, with direct iscsi lun. (so it's not lvm related).

live migrate, open console, -> crash .

I'll investigate ...

 

[spirit]

ok, seem to be mouse related !

Live migrate, open console, you use your keyboard without problem.

Now move your mouse -> crash.


Maybe centos load mouse driver and not debian ?

 

[mdevilz]

I am not running any x server on these vms.

ok, seem to be mouse related !

Live migrate, open console, you use your keyboard without problem.

Now move your mouse -> crash.


Maybe centos load mouse driver and not debian ?

 

[spirit]

could you try to put

tablet: 0

in config file ?

without tablet device, i didn't have crash anymore.
(I don't know how vnc mouse interact with a vm without Xorg).
But I don't have any crash in debian.

 

[e100]

could you try to put

tablet: 0

in config file ?

without tablet device, i didn't have crash anymore.
(I don't know how vnc mouse interact with a vm without Xorg).
But I don't have any crash in debian.

I'm wondering if this is not necessarily a mouse/tablet issue but some USB issue in general.
From a link you provided earlier I clicked the parent and read that deactivating the usb hub and re-activating it fixed the mouse tracking issue too.
http://www.mail-archive.com/qemu-devel@nongnu.org/msg98071.html

 

[mdevilz]

tablet: 0

in config file ?

This seems to have fixed it in Scientific Linux 6.1

 

[spirit]

I found a working way:

hotunplug tablet before migration
hotplug tablet after migration.

So seem to be a tablet related problem and not usb.

Could you retest my package:

http://odisoweb1.odiso.net/qemu-server_2.0-20_amd64.deb
(/etc/init.d/pvedaemon restart on both nodes)

it's works fine for me on centos6.2 and windows 2008

 

[renstar]

It works!

I have tested openSUSE 12.1, Fedora 16 and Centos 6.2. Thanks for your great work.

 

[spirit]

ok thanks.
Seem to qemu-kvm developpers are pushing patchs for these bug, so we'll waiting a little to include a final proper fix.