On Wed, Sep 28, 2011 at 11:41:11AM -0600, Eric Blake wrote:
[adding libvirt list]
On 09/28/2011 09:24 AM, Dennis Jacobfeuerborn wrote:
I just noticed that once I upgrade to libvirt-0.9.6-1 from the virt-preview repo on my Fedora 15 machine I can no longer boot guests that use virtio disks. I only get "Boot failed: could not read the boot disk". Removing the disk and re-adding it as IDE drive allows KVM to boot from the disk (although the full boot obviously fails due to the hda/vda naming difference but that's expected).
After downgrading to libvirt-0.8.8-7 again the problem goes away and the guest boot fine from virtio disks.
Somewhere around 0.9.4 libvirt switched to use a different method to indicate from which device to boot. See http://libvirt.org/git/?p=libvirt.git;a=commit;h=c3068d4d2381146ed46051ad636...
I think this causes Seabios to skip using extboot.bin for booting and to try to directly boot from a disk. If your Seabios version is too old, it won't support booting from virtio disks directly.
The libvirt package should probably be updated to require seabios-bin>= 0.6.2.
Yes, that probably needs to happen to libvirt.spec when built for F16 (and thus imported into F15 via virt-preview). I'll tackle that, since I've been making a couple other spec file patches lately.
It is not a libvirt requirement really. It is QEMU that is advertising it supports the per-device boot ordering feature. libvirt queries this and then tries to use it. QEMU should have required the new Seabios if it intends to advertise this feature. Daniel -- |: http://berrange.com -o- http://www.flickr.com/photos/dberrange/ :| |: http://libvirt.org -o- http://virt-manager.org :| |: http://autobuild.org -o- http://search.cpan.org/~danberr/ :| |: http://entangle-photo.org -o- http://live.gnome.org/gtk-vnc :|