Re: 1.1.1 -> 1.1.2 migrate /managedsave issue

[Philipp Hahn <hahn@univention.de>]

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Hello Doug,

On Saturday 20 October 2012 00:46:43 Doug Goldstein wrote:
> I'm using libvirt 0.10.2 and I had qemu-kvm 1.1.1 running all my VMs.
...
> I had upgraded to qemu-kvm 1.1.2
... 
> qemu: warning: error while loading state for instance 0x0 of device 'ram'
> load of migration failed

That error can be from many things. For me it was that the PXE-ROM images for 
the network cards were updated as well. Their size changed over the next 
power-of-two size, so kvm needed to allocate less/more memory and changed 
some PCI configuration registers, where the size of the ROM region is stored.
On loading the saved state those sizes were compared and failed to validate. 
KVM then aborts loading the saved state with that little helpful message.

So you might want to check, if your case is similar to mine.

I diagnosed that using gdb to single step kvm until I found 
hw/pci.c#get_pci_config_device() returning -EINVAL.

Hope that helps.

Sincerely
Philipp
-- 
Philipp Hahn           Open Source Software Engineer      hahn@univention.de
Univention GmbH        be open.                       fon: +49 421 22 232- 0
Mary-Somerville-Str.1  D-28359 Bremen                 fax: +49 421 22 232-99
                                                   http://www.univention.de/

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