Re: dom0 panics when domU writes to disk on NFS

[Jean-Yves Migeon <jean-yves.migeon%espci.fr@localhost>]

On Wed, 22 Dec 2010 23:10:40 +0000, Alexander Frolkin 
<avf%eldamar.org.uk@localhost> wrote:
> > I'm running a 5.1 dom0 and trying to install a 5.1 domU.  The domU's 
> > disk
> > lives on NFS and whenever domU tries to write to the disk, dom0 
> > panics.
>
> Any ideas about this?
>
> I've tried to look at the code myself, but I have absolutely no idea 
> what
> I'm doing, unfortunately. :-(
>
> (Maybe I should just set up kgdb and do some more digging.  I might 
> even
> learn something...)

http://gnats.netbsd.org/cgi-bin/query-pr-single.pl?number=35050

It's an old problem, most probably related to v->p translations in 
pmap(9).

To inspect the matter, you have to be familiar with x86/xen pmap. Feel 
free to ask if you want some help with it; unfortunately, you won't have 
much activity in the upcoming week...

Merry Christmas :)

--
Jean-Yves Migeon
jeanyves.migeon%free.fr@localhost