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Re: [Qemu-devel] Enhancing qemu-img convert format compatibility
From: |
Richard W.M. Jones |
Subject: |
Re: [Qemu-devel] Enhancing qemu-img convert format compatibility |
Date: |
Mon, 18 Apr 2011 12:03:51 +0100 |
User-agent: |
Mutt/1.5.21 (2010-09-15) |
On Mon, Apr 18, 2011 at 11:18:42AM +0100, Stefan Hajnoczi wrote:
> qemu-img is a pretty good Rosetta stone for image formats but it is
> missing support some format versions. In order to bring qemu-img
> up-to-date with the latest disk image formats we will need to find
> specific image files and/or software versions that produce image files
> that qemu-img cannot understand today.
>
> If you have image files that qemu-img is unable to manipulate, please
> respond with details of the software and version used to produce the
> image. If possible please include a link to a small example image
> file.
Stefan,
We found that using the vSphere 4.x "Export to OVF" option would
produce a VMDK file that qemu-img could not convert to raw.
For older qemu-img the file would be converted to something that was
not all zeroes, but nevertheless was certainly not a raw disk image.
For current qemu-img, we get an "Operation not permitted" error which
is at least better than silent corruption.
Full details are in this bug report:
https://bugzilla.redhat.com/show_bug.cgi?id=548723
Note the links at the top of that bug are broken. The disk image
which failed is:
http://oirase.annexia.org/tmp/TestLinux-disk1.vmdk
SHA1: 2c81bae89210b075acc51da9d025935470149d55
http://oirase.annexia.org/tmp/TestLinux.ovf
SHA1: 30831689b8c6f1b1a1fcbb728769b5f71056a580
Rich.
--
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
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