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Re: [Qemu-devel] [PATCH] vpc: use current_size field for XenServer VHD i
From: |
Stefan Hajnoczi |
Subject: |
Re: [Qemu-devel] [PATCH] vpc: use current_size field for XenServer VHD images |
Date: |
Tue, 22 Mar 2016 10:42:00 +0000 |
User-agent: |
Mutt/1.5.24 (2015-08-30) |
On Mon, Mar 21, 2016 at 02:37:46PM -0400, Spencer Baugh wrote:
> Stefan Hajnoczi <address@hidden> writes:
> > What output did you get from "qemu-img info /dev/dm-1"?
>
> After the patching:
>
> address@hidden:~# 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 |address@hidden|
> 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
> address@hidden:~# 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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Re: [Qemu-devel] [Qemu-block] [PATCH] vpc: use current_size field for XenServer VHD images, Jeff Cody, 2016/03/21