From: Martin Kraus <martin.kraus@wujiman.net>
To: Gleb Natapov <gleb@redhat.com>
Cc: kvm <kvm@vger.kernel.org>
Subject: Re: grub booting from virtio but can't see virtio disks
Date: Sat, 7 Aug 2010 17:31:16 +0200 [thread overview]
Message-ID: <20100807153114.GA8631@/bin/hostname> (raw)
In-Reply-To: <20100803055859.GR24773@redhat.com>
On Tue, Aug 03, 2010 at 08:58:59AM +0300, Gleb Natapov wrote:
> On Mon, Aug 02, 2010 at 09:05:48PM +0200, Martin Kraus wrote:
> > Hi. I've been wondering why grub can boot from a virtio device but can't see
> > virtio devices. I wanted to have a generic disk which would have a bios
> > partition with grub modules and this would include grub.cfg from a second disk.
> > I could use this image to boot all my virtual linux machines without the need
> > to have a partition on a logical volume. This way I have a separate virtio
> > boot lv with partitions and it works fine. It just doesn't seem as nice and I'm
> > curious if there is a way to get it to work, meaning if for example using efi
> > or some other kind of bios for qemu or grub module would help it.
> >
> What is your qemu version and qemu command line?
debian squeeze 0.12.4
kvm -cpu host -drive file=/dev/mapper/virtual-ctech_boot,boot=on,if=virtio,cache=none -drive
file=/dev/mapper/virtual-ctech,if=virtio,cache=none
virtual-ctech_boot is partitioned and mounts as "/boot" in the virtual guest and virtual-ctech is not
partitioned and is mounted as "/".
This works fine but grub sees only the virtual-ctech_boot from which it is
booting. From that I see it is possible to access virtio devices at boot time but
somehow the bootdisk is different from the other disk.
I have to set if=ide for virtual-ctech for grub to be able to see it.
Is it possible to see all the virtio disks in grub or am I just out of luck?
thanks
mk
next prev parent reply other threads:[~2010-08-07 17:52 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-08-02 19:05 grub booting from virtio but can't see virtio disks Martin Kraus
2010-08-03 5:58 ` Gleb Natapov
2010-08-07 15:31 ` Martin Kraus [this message]
2010-08-08 11:39 ` Gleb Natapov
2010-08-08 16:14 ` Martin Kraus
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