[libvirt] libvirt unable to start domains

[Zeeshan Ali (Khattak)]

On Thu, Jan 3, 2013 at 11:44 PM, Zeeshan Ali (Khattak)
<zeeshanak at gnome.org> wrote:
> Hi,
>   I updated my libvirt git clone and install yesterday (after about a
> month or so) and now I can't start domains:
>
> $ virsh start fedora18
> error: Failed to start domain fedora18
> error: unsupported configuration: This QEMU does not support QXL
> graphics adapters
>
> While libvirt is self-built, I'm using qemu 1.2.2-1.fc18 from vanila
> Fedora 18 repo. Just to be clear, qemu was not updated before the
> problem appeared, only libvirt.
>
> Here is the libvirtd log:
> http://static.fi/~zeenix/tmp/libvirtd-session-zeenix.log (13 MB).
>
> Also attaching the domain config.

If my `git bisect run` script worked, I've found the commit
introducing this issue:

4c993d8ab5473334e9d4155faa913476ada39069 is the first bad commit
commit 4c993d8ab5473334e9d4155faa913476ada39069
Author: Guannan Ren <gren at redhat.com>
Date:   Fri Dec 14 15:06:31 2012 +0800

    qemu: add qemu vga devices caps and one cap to mark them usable

    QEMU_CAPS_DEVICE_QXL          -device qxl
    QEMU_CAPS_DEVICE_VGA          -device VGA
    QEMU_CAPS_DEVICE_CIRRUS_VGA   -device cirrus-vga
    QEMU_CAPS_DEVICE_VMWARE_SVGA  -device vmware-svga

    QEMU_CAPS_DEVICE_VIDEO_PRIMARY  /* safe to use -device XXX
                                     for primary video device */

    Fix a typo in qemuCapsObjectTypes, the string 'qxl' here
    should be -device qxl rather than -vga [...|qxl|..]

:040000 040000 576dc9f1e74fae8b5d8c75349cc769e17c5f7758
5afc50956ad09cf6e740ce75800d746a53513271 M	src
:040000 040000 0b95704f11e9aacbd4c6510e29343a497c52c11e
fbd9445a795a2814d8739805ebaf9c7c2f0d4160 M	tests
bisect run success

FWIW, problem is not reproducible against the parent commit
34ca5684970fc5e4be0ec29809b73dea7be2d84f.

-- 
Regards,

Zeeshan Ali (Khattak)
FSF member#5124