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Bug 1142993 - Windows OS image not properly detected by virt-win-reg
Summary: Windows OS image not properly detected by virt-win-reg
Keywords:
Status: CLOSED NOTABUG
Alias: None
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: libguestfs
Version: 7.1
Hardware: Unspecified
OS: Unspecified
unspecified
unspecified
Target Milestone: rc
: ---
Assignee: Richard W.M. Jones
QA Contact: Virtualization Bugs
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2014-09-17 16:58 UTC by Nathan Kinder
Modified: 2014-09-17 23:08 UTC (History)
3 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2014-09-17 23:08:24 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)

Description Nathan Kinder 2014-09-17 16:58:54 UTC 
I am attempting to use virt-win-reg on RHEL 7 to update some registry settings in a Windows 2008 Server image.  This works fine on Fedora 20 with the same image, but it fails to detect the OS in the image on RHEL7:

-----------------------------------------------------------------------------
[root@puma01 rhos-ad-setup]# virt-win-reg --debug --merge /var/lib/libvirt/images/ad.qcow2 << EOF
[HKLM\SYSTEM\Setup]
"UnattendFile"="$SETUP_PATH\\autounattend.xml"
EOF

launching libguestfs ... at /usr/bin/virt-win-reg line 245.
inspecting guest ... at /usr/bin/virt-win-reg line 294.
virt-win-reg: No operating system could be detected inside this disk image.

This may be because the file is not a disk image, or is not a virtual machine
image, or because the OS type is not understood by libguestfs.

If you feel this is an error, please file a bug report including as much
information about the disk image as possible.
-----------------------------------------------------------------------------

The image I'm using is an official evaluation image from Microsoft that is converted to qcow2 format.  There are details on downloading and converting the image here:

  http://www.freeipa.org/page/Setting_up_Active_Directory_domain_for_testing_purposes#Download_and_unpack_original_images

Please let me know if there is any additional information that I can provide.
Comment 3 Richard W.M. Jones 2014-09-17 19:38:28 UTC 
This works for me with libguestfs 1.27.47 on Fedora Rawhide:

$ virt-win-reg --merge test.qcow2 <<EOF
[HKLM\SYSTEM\Setup]
"UnattendFile"="$SETUP_PATH\\autounattend.xml"
EOF
$ echo $?
0

To diagnose this further, can you do:

  virt-inspector -a /var/lib/libvirt/images/ad.qcow2 -v -x |& tee /tmp/log

This will produce a very large amount of debugging output (in /tmp/log)
which you can examine and attach to this bug.
Comment 4 Richard W.M. Jones 2014-09-17 20:46:53 UTC 
For completeness I checked this on RHEL 7.1 too, and it works
there as well (for me).

Then I had a thought: Do you have 'libguestfs-winsupport' installed?
It is required in order to inspect or modify Windows guests on RHEL.
Comment 5 Nathan Kinder 2014-09-17 21:00:35 UTC 
(In reply to Richard W.M. Jones from comment #4)
> For completeness I checked this on RHEL 7.1 too, and it works
> there as well (for me).
> 
> Then I had a thought: Do you have 'libguestfs-winsupport' installed?
> It is required in order to inspect or modify Windows guests on RHEL.

I do not.  I saw mention of this packge when filing the BZ, but didn't see it in the RHEL7 Server or Optional channels.  Is this not shipped in one of the main RHEL7 channels?
Comment 7 Nathan Kinder 2014-09-17 23:08:24 UTC 
This is working properly after installing the libguestfs-winsupport package.  Apologies for the noise!
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