[libvirt] how to change the boot order of a qemu-kvm guest os

[Daniel P. Berrange]

On Thu, Aug 27, 2009 at 10:24:18PM +0530, Gopalakrishnan Subramanian wrote:
>    Hi
>         I am using libvirt and virt-manager to manage and run 2 Fedora 10
>    guest operating systems for the sake of installing a Oracle RAC
>    environment . As part of the process after using the both gues for some
>    work i felt the nedd to add an additional virtual scsi disk to one of the
>    hosts.
>    Trying to start the guest os after adding this scsi virtual disk to the
>    host fails (see image)  . The guest BIOS screen and all comes up fine but
>    it now seems to be trying to boot from the newly added disk . Fiddling
>    around with the order of the disks as listed in the xml has not helped
>    either .

Yeah this is a bug in libvirt - its stupidly reordering disks itself.
I've got a patch that will be in the next libvirt release

http://www.redhat.com/archives/libvir-list/2009-August/msg00340.html

There's no real workaround before that other than make sure you only
use the same type of disk - eg always SCSI, or always VirtIO, but
never a mix of both.

Daniel
-- 
|: Red Hat, Engineering, London   -o-   http://people.redhat.com/berrange/ :|
|: http://libvirt.org  -o-  http://virt-manager.org  -o-  http://ovirt.org :|
|: http://autobuild.org       -o-         http://search.cpan.org/~danberr/ :|
|: GnuPG: 7D3B9505  -o-  F3C9 553F A1DA 4AC2 5648 23C1 B3DF F742 7D3B 9505 :|