Bug 961854 - [RFE] libvirt: Add/improve support for VHD/VHDX format
Summary: [RFE] libvirt: Add/improve support for VHD/VHDX format
Keywords:
Status: CLOSED WONTFIX
Alias: None
Product: Red Hat Enterprise Linux Advanced Virtualization
Classification: Red Hat
Component: libvirt
Version: 8.0
Hardware: All
OS: All
unspecified
low
Target Milestone: rc
: 8.0
Assignee: Martin Kletzander
QA Contact: Han Han
URL:
Whiteboard:
Depends On: 879234 1006159 1007176
Blocks: 977441
TreeView+ depends on / blocked
 
Reported: 2013-05-10 15:02 UTC by Richard W.M. Jones
Modified: 2019-02-22 22:09 UTC (History)
19 users (show)

Fixed In Version:
Doc Type: Enhancement
Doc Text:
Clone Of: 879234
Environment:
Last Closed: 2019-02-05 08:35:38 UTC
Type: Bug
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)

Comment 2 Richard W.M. Jones 2013-05-10 15:05:47 UTC 
Test images:
http://oirase.annexia.org/tmp/f18x64.vhdx.xz
http://oirase.annexia.org/tmp/blank.vhdx.xz

The first is a F18 disk image, of virtual size 20 GB.

The second is a completely blank disk image, of virtual size 1 GB.

Note that you will need qemu from git (or possibly 1.5)
for any of this to work.
Comment 4 Daniel Berrangé 2013-05-10 15:54:54 UTC 
Unfortunately supporting VDHX format is not as easy as I expected. You can't simply look at specific offsets in the file to determine the VDHX version, capacity or backing file. You have to actually do quite a bit of careful parsing of headers. This will require some re-factoring of the way libvirt probes storage metadata to support, rather than just adding a few offsets to the existing data tables.
Comment 10 Jaroslav Suchanek 2019-02-05 08:35:38 UTC 
Closing accordingly to v2v bug 761199. If there is real requirement for this feature please reopen this bug with additional justification. Thanks.
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