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Date:      Tue, 16 Dec 2014 12:05:41 -0500
From:      John Baldwin <jhb@freebsd.org>
To:        freebsd-stable@freebsd.org
Cc:        Marcel Moolenaar <marcel@freebsd.org>
Subject:   Re: FreeBSD 10.1 qcow2 image panic on Linux VM hosts
Message-ID:  <201412161205.41152.jhb@freebsd.org>
In-Reply-To: <546F2614.4020800@stenton.me.uk>
References:  <546F2614.4020800@stenton.me.uk>

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On Friday, November 21, 2014 6:46:28 am Chris Stenton wrote:
> Hi,
> 
> I am trying to run the vanilla FreeBSD 10.1 qcow2 image on a CENTOS 7 VM 
> Host.
> 
>   I can start it up ok but under a small load it kernel panics.
> 
> The error is
> 
> g_vfs_done():vtdb0: hard error gpt/rootfs[WRITE(offset=21890048, 
> length=8704)]cmd=write error = 534 panic:cannot reassign paging buffer 
> cpuid = 1
> 
> Dump failed so I am just copying the above from virt-manager console.
> 
> All I am doing is pkg install emacs24  and it gets as far as "[7/96] 
> Installing perl5-5.16.3_11:  32%"
> 
> I've tried the Image on a Ubuntu VM host as well and get the same 
> problem.  I've tried varying the amount of memory up to 4GB but still 
> the same problem. Other OS's clients run fine.
> 
> Any ideas?

Marcel believes he fixed the root issue in r275721.  Can you try rebuilding
the image with the fixed mkimg to see if that fixes the problem?

-- 
John Baldwin



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