From: Stefan Hajnoczi <stefanha@redhat.com>
To: Spencer Baugh <sbaugh@catern.com>
Cc: Grant Wu <grantwwu@gmail.com>, Kevin Wolf <kwolf@redhat.com>,
qemu-devel@nongnu.org, qemu-block@nongnu.org
Subject: Re: [Qemu-devel] [PATCH] vpc: use current_size field for XenServer VHD images
Date: Tue, 22 Mar 2016 10:42:00 +0000 [thread overview]
Message-ID: <20160322104200.GD29248@stefanha-x1.localdomain> (raw)
In-Reply-To: <878u1blls5.fsf@earth.catern.com>
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On Mon, Mar 21, 2016 at 02:37:46PM -0400, Spencer Baugh wrote:
> Stefan Hajnoczi <stefanha@redhat.com> writes:
> > What output did you get from "qemu-img info /dev/dm-1"?
>
> After the patching:
>
> root@storage-4:~# hexdump -C -n 512 /dev/vgstorage/tartanfsbackup
> 00000000 63 6f 6e 65 63 74 69 78 00 00 00 02 00 01 00 00 |conectix........|
> 00000010 00 00 00 00 00 00 02 00 14 10 4b 1f 71 65 6d 32 |..........K.qem2|
> 00000020 00 01 00 03 00 00 00 00 00 00 01 c4 4f 40 00 00 |............O@..|
> 00000030 00 00 01 f4 00 00 00 00 ff ff 10 ff 00 00 00 03 |................|
> 00000040 ff ff ed 81 6d 0d 68 bd 9c fd 4d 65 a3 17 c7 6c |....m.h...Me...l|
> 00000050 06 a6 aa bf 00 00 00 00 00 00 00 00 00 00 00 00 |................|
> 00000060 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
> *
> 00000200
> root@storage-4:~# qemu-img info /dev/vgstorage/tartanfsbackup
> block-vpc: The header checksum of '/dev/vgstorage/tartanfsbackup' is incorrect.
This is a warning message that does not cause opening the file to fail.
It makes sense since the header was modified without setting the new
checksum value.
> qemu-img: Could not open '/dev/vgstorage/tartanfsbackup': Could not open '/dev/vgstorage/tartanfsbackup': Invalid argument
Please also post the output of "hexdump -C -n 512 -s 512
/dev/vgstorage/tartanfsbackup". This is another header structure and it
gets parsed while opening the file.
Thanks,
Stefan
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next prev parent reply other threads:[~2016-03-22 10:42 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-19 19:42 [Qemu-devel] [PATCH] vpc: use current_size field for XenServer VHD images Stefan Hajnoczi
2016-03-20 5:33 ` Grant Wu
2016-03-21 9:56 ` Stefan Hajnoczi
2016-03-21 18:37 ` Spencer Baugh
2016-03-22 10:42 ` Stefan Hajnoczi [this message]
2016-03-22 15:11 ` Grant Wu
2016-03-21 16:37 ` [Qemu-devel] [Qemu-block] " Jeff Cody
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