On Wed, Sep 28, 2011 at 16:12, Dennis Jacobfeuerborn <[email protected]> wrote: > On 09/28/2011 01:23 PM, Ruben Kerkhof wrote: >> >> Hey Dennis, >> >> On Tue, Sep 27, 2011 at 16:20, Dennis Jacobfeuerborn >> <[email protected]> wrote: >>> >>> Hi, >>> 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. >>> >>> Is this a known problem? Do I have to configure something differently to >>> make this work as it should? >> >> What version of Seabios are you using? I believe support for direct >> booting from virtio disks was added only recently. > > That can't be right. I've been using only virtio disks for years now and > never had any problem booting from them. > Also as I mentioned above it is upgrading/downgrading libvirt that > creates/fixes the issue. I don't touch the installed seabios package at all. > > Regards, > Dennis
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=c3068d4d2381146ed46051ad636a928edea5c602 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. Does adding <bootmenu enable='yes'/> to your xml help? If I'm right this will cause Seabios to fall back to using extboot.bin This is all just a wild guess, but I'm having the same issue with scsi disks. Regards, Ruben _______________________________________________ virt mailing list [email protected] https://admin.fedoraproject.org/mailman/listinfo/virt
