Re: [Xen-devel] Problem with migrating/saving 2.6.30 vanilla kernel with multiple VCPUs

[Denis Chapligin <chollya@xxxxxxxxxxx>]

Hi

On Mon, 10 Aug 2009 11:04:24 +0300
Denis Chapligin <chollya@xxxxxxxxxxx> wrote:

> Hi
> 
> I have xen 3.4.1 installed, with dom0 running linux-2.6.18-xen.hg
> (four weeks old) I've made a domU with a vanilla 2.6.30.4 kernel and
> tried to save it to a file. 
> xm save command stuck and resulting file was only 1503 bytes.
> 


Even more - when i set vcpus to 1 on this domain, it is possible to
save/restore it, but domain can migrate only one time. Second migratin
fails with:
dom0:~# xm migrate -l test otherdom0
Error: /usr/lib/xen-3.4/bin/xc_save 47 3 0 0 1 failed

and following message inx xm dmesg:

(XEN) mm.c:806:d0 Error getting mfn 10d679 (pfn 133b6) from L1 entry
800000010d679225 for l1e_owner=0, pg_owner=3 
(XEN) mm.c:806:d0 Error getting mfn 10d679 (pfn 133b6) from L1 entry
800000010d679225 for l1e_owner=0, pg_owner=3

-- 

                                                Denis Chapligin

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