Re: [Xen-devel] xl create should refuse to share block devices RW between domains

[Ian Campbell <Ian.Campbell@xxxxxxxxxxxxx>]

On Tue, 2010-07-27 at 16:18 +0100, Jeremy Fitzhardinge wrote:
> On 07/27/2010 03:55 AM, Ian Campbell wrote:
> >> I also think that tap_ctl_create is the right place to do these checks,
> >> not a script called by udev after the device has been created.
> > Agreed. tapdisk should be taking out a flock() or something similar on
> > any vhd files it is going to write to and should fail if it can't lock
> > the file.
> 
> I'm not sure that would work for physical device/lvm backing.

That should be covered by the existing checks for shared devices in the
hotplug scripts.

I'm not suggesting those aren't currently broken though ;-)

Ian.


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