From: Gleb Natapov <gleb@redhat.com>
To: Anthony Liguori <anthony@codemonkey.ws>
Cc: qemu-devel@nongnu.org, Bruce Rogers <brogers@novell.com>
Subject: Re: [Qemu-devel] Is this an invalid combination?
Date: Tue, 15 Feb 2011 22:30:42 +0200 [thread overview]
Message-ID: <20110215203042.GB12069@redhat.com> (raw)
In-Reply-To: <20110215202808.GA12069@redhat.com>
On Tue, Feb 15, 2011 at 10:28:08PM +0200, Gleb Natapov wrote:
> On Tue, Feb 15, 2011 at 02:21:41PM -0600, Anthony Liguori wrote:
> > On 02/15/2011 02:07 PM, Bruce Rogers wrote:
> > >Hi,
> > >
> > >We just noticed an issue flagged by a libvirt based test. This same command line didn't used to fail, and I wanted to be sure that this is behaving as intended.
> > >
> > >When the following command line is used on the current qemu version:
> > >
> > >x86_64-softmmu/qemu-system-x86_64 -kernel /boot/vmlinuz -drive file=~/disk0.raw,if=none,id=foo,boot=on -device virtio-blk-pci,drive=foo
> > >
> > >We get the following error reported:
> > >Two devices with same boot index 0
> > >
> > >Previous versions of qemu did not flag this as an error condition.
> >
> > Upstream QEMU does not have a boolean boot flag although I guess we
> > ignore it in -drive which sucks :-/
> >
> > In upstream QEMU, the BIOS can boot just fine from a virtio device.
> > What you're seeing is that we've apparently overloaded the boot flag
> > in upstream qemu to mean boot index.
> >
> > Gleb, what's the right invocation here?
> >
> Just drop boot=on. Qemu-kvm registers extboot and some other bootrom
> (which one?) with the same boot index. This should be fixed, but
Ah the second one is linux loader.
> dropping boot=on is the right solution in any case. Actually I want to
> remove extboot from qemu-kvm at all. It will not make it upstream
> anyway.
>
>
> > Regards,
> >
> > ANthony Liguori
> >
> > >I can see that we are indicating two different boot sources here, so I would guess the command line is invalid, but wanted to be sure.
> > >
> > >Bruce
> > >
> > >
>
> --
> Gleb.
--
Gleb.
next prev parent reply other threads:[~2011-02-15 20:30 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-02-15 20:07 [Qemu-devel] Is this an invalid combination? Bruce Rogers
2011-02-15 20:21 ` Anthony Liguori
2011-02-15 20:28 ` Gleb Natapov
2011-02-15 20:30 ` Gleb Natapov [this message]
2011-02-15 20:32 ` Bruce Rogers
2011-02-15 20:28 ` Bruce Rogers
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