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Date: Wed, 5 Feb 2014 20:15:02 +0000
From: "Dr. David Alan Gilbert" <dgilbert@redhat.com>
Message-ID: <20140205201501.GL2398@work-vm>
References: <52F27A13.7090003@profihost.ag>
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Subject: Re: [Qemu-devel] QEMU LIve Migration - swap_free: Bad swap file
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To: Stefan Priebe <s.priebe@profihost.ag>
Cc: qemu-devel <qemu-devel@nongnu.org>, "pve-devel@pve.proxmox.com" <pve-devel@pve.proxmox.com>

* Stefan Priebe (s.priebe@profihost.ag) wrote:
> Hello,
> 
> after live migrating machines with a lot of memory (32GB, 48GB, ...)
> i see pretty often crashing services after migration and the guest
> kernel prints:
> 
> [1707620.031806] swap_free: Bad swap file entry 00377410
> [1707620.031806] swap_free: Bad swap file entry 00593c48
> [1707620.031807] swap_free: Bad swap file entry 03201430
> [1707620.031807] swap_free: Bad swap file entry 01bc5900
> [1707620.031807] swap_free: Bad swap file entry 0173ce40
> [1707620.031808] swap_free: Bad swap file entry 011c0270
> [1707620.031808] swap_free: Bad swap file entry 03c58ae8
> [1707660.749059] BUG: Bad rss-counter state mm:ffff88064d09f380
> idx:1 val:1536
> [1707660.749937] BUG: Bad rss-counter state mm:ffff88064d09f380
> idx:2 val:-1536
> 
> Qemu is 1.7
> 
> Does anybody know a fix?

I don't, but some more information about:
    1) What guest you're running
    2) The configuration of your hosts
    3) The command line (or XML if you're running libvirt) for
       your qemu so we can see what devices you're running.

would probably help people.

Do you get any messages on either the source or destination
qemu during the migrate?

Dave
--
Dr. David Alan Gilbert / dgilbert@redhat.com / Manchester, UK