Re: Question to recent xentools3 update

[Manuel Bouyer <bouyer%antioche.eu.org@localhost>]

On Thu, Mar 27, 2008 at 08:12:30PM +0100, Christoph Egger wrote:
> Manuel Bouyer wrote:
> >On Thu, Mar 27, 2008 at 07:05:04PM +0100, Christoph Egger wrote:
> >>>If a Xen config with "disk = [ 'phy:/dev/rraid0f,0x1,w' ]" works and no 
> >>>other
> >>>Xen component opens the corresponding block device this could work.  As 
> >>>my
> >>>Xen machine is in production now, I cannot test it.
> >>When you create two new guests (for testing purpose) both with
> >>"disk = [ 'phy:/dev/cd0a,0x1,r' ]" do you get an EBUSY when you start 
> >>the second guest?
> >
> >yes.
> >
> >>I think, trying to start two guests from the same 
> >>(Live-)CD shouldn't hurt.
> >
> >I think this behavior changed recently in current. I've not investigated
> >this yet. 
> 
> What I want to know is what happens when two guests open the same
> block device. /dev/cd0a is a harmless test candidate. Do you mean, cd0a 
> is an exception now?

No, the same happens for any block device (exept the raw partition,
'd' on i386/amd64).

-- 
Manuel Bouyer <bouyer%antioche.eu.org@localhost>
     NetBSD: 26 ans d'experience feront toujours la difference
--