Hello list. I just ran into the issue of unability to boot from a device exported as /dev/sda in a HVM host, as described at http://www.bestgrid.org/index.php/HVM_virtual_machine As even IDE drives are now labeled ''sda'' also with recent linux kernels, this is a bit troublesome :) -- BOFH excuse #309: firewall needs cooling _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
On 04/02/2009 10:51, "Guillaume Rousse" <Guillaume.Rousse@inria.fr> wrote:> I just ran into the issue of unability to boot from a device exported as > /dev/sda in a HVM host, as described at > http://www.bestgrid.org/index.php/HVM_virtual_machine > > As even IDE drives are now labeled ''sda'' also with recent linux kernels, > this is a bit troublesome :)The limitation is that the BIOS cannot boot from SCSI discs. It can boot from any IDE disc, regardless of what Linux calls it. -- Keir _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
Daniel P. Berrange
2009-Feb-04 11:39 UTC
Re: [Xen-devel] ISCSI boot limitation in HVM hosts
On Wed, Feb 04, 2009 at 11:29:47AM +0000, Keir Fraser wrote:> On 04/02/2009 10:51, "Guillaume Rousse" <Guillaume.Rousse@inria.fr> wrote: > > > I just ran into the issue of unability to boot from a device exported as > > /dev/sda in a HVM host, as described at > > http://www.bestgrid.org/index.php/HVM_virtual_machine > > > > As even IDE drives are now labeled ''sda'' also with recent linux kernels, > > this is a bit troublesome :) > > The limitation is that the BIOS cannot boot from SCSI discs. It can boot > from any IDE disc, regardless of what Linux calls it.In upstream QEMU there is a ''extboot'' option ROM that lets it boot off any IDE, SCSI, or VirtIO disk. It''d be good to get that working under Xen HVM, and also have it support Xen PV block, so you can avoid any restrictions on disk configs in HVM. 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 :| _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel