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Date: Tue, 16 Jun 2009 20:02:58 +0100
From: Jamie Lokier <jamie@shareable.org>
Subject: Re: [Qemu-devel] Regression opening read-only cdroms
Message-ID: <20090616190258.GN11893@shareable.org>
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To: Avi Kivity <avi@redhat.com>
Cc: Stefano Stabellini <stefano.stabellini@eu.citrix.com>, Christoph Hellwig <hch@lst.de>, qemu-devel <qemu-devel@nongnu.org>

Jamie Lokier wrote:
> Avi Kivity wrote:
> > On 06/16/2009 08:46 PM, Jamie Lokier wrote:
> > >Users who expect things to just work will be even more surprised that
> > >"-hda image" where image is read-only does not give any error from
> > >QEMU, but their guest crashes.  Or that "-hda image" works as usual,
> > >and their guest crashes, and eventually they discover it's because
> > >their disk image is not writable, and it's always worked before
> > >because they were using -snapshot or something like that, and QEMU
> > >didn't warn them it would be a problem...
> > 
> > I agree, for non-cdroms/floppies, non-backing store files we should 
> > require write access.
> 
> Did you miss that read-only disks exist, as seen through
> SCSI/USB/virtio, and that guests will mount them read-only automatically?

I see that you didn't; our mails passed in the mist.

Ok. :-)

-- Jamie