From: Avi Kivity <avi@redhat.com>
To: "René Pfeiffer" <lynx@luchs.at>
Cc: kvm@vger.kernel.org
Subject: Re: DMA errors in guest caused by corrupted(?) disk image
Date: Sat, 09 May 2009 12:31:40 +0300 [thread overview]
Message-ID: <4A054D7C.8090109@redhat.com> (raw)
In-Reply-To: <20090509090051.GB3054@nephtys>
René Pfeiffer wrote:
> On Mar 31, 2009 at 1355 +1100, Matthew Palmer appeared and said:
>
>> Hi,
>>
>> I've just come across a somewhat strange problem that was suggested I
>> report to the list.
>>
>> The problem manifested itself as DMA errors and the like popping up in the
>> guest, like I'd expect to see if a disk in a physical machine was dying,
>> like this:
>>
>> hda: dma_timer_expiry: dma status == 0x21
>> [...]
>>
>
> I've seen a similar effect on my KVM host server. There were I/O errors
> on one partition. When I tried to reformat the partition and restore its
> content from backups, mkfs was reporting I/O errors, always at the same
> block number. I added a second qcow2 file and moved the partition there.
>
>
It's worth trying a qemu-img convert to move the image to an LVM volume.
--
I have a truly marvellous patch that fixes the bug which this
signature is too narrow to contain.
prev parent reply other threads:[~2009-05-09 9:33 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-03-31 2:55 DMA errors in guest caused by corrupted(?) disk image Matthew Palmer
2009-05-09 9:00 ` René Pfeiffer
2009-05-09 9:31 ` Avi Kivity [this message]
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