Red Hat Bugzilla – Bug 444155
mkinitrd: support booting from KVM virtio devices
Last modified: 2009-06-10 03:50:47 EDT
If you run kvm-qemu with e.g. --drive if=virtio,boot=on,file=foo.img then the
guest must use the KVM virtio drivers to mount the root device.
KVM exposes its virtio devices to the guest over PCI, requiring the guest to use
the virtio_pci driver for device enumeration. The actual block device driver is
Currently, if you boot using virtio and then try and create new initrd, the
initrd will include virtio_blk, but not virtio_net.
virtio_blk is to virtio_pci as standard disk drives is to the core PCI code, and
as virtio_blk is to lguest's device enumeration code and as xen_blkfront is to
Where virtio_pci differs from the others, though, is that it's a module and not
Created attachment 303790 [details]
(In reply to comment #0)
> Currently, if you boot using virtio and then try and create new initrd, the
> initrd will include virtio_blk, but not virtio_net.
... "but not virtio_pci" is what I meant
Applied and building for F9
Just to be sure, I tried a kvm virtio install without this fix and it failed to
boot after the install because virtio_pci wasn't loaded
Tried again with the fix and it works fine
Changing version to '9' as part of upcoming Fedora 9 GA.
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Long since fixed