[CentOS-virt] RE: [CentOS] Running CentOS 4.6 domUs on CentOS 5.1 dom0 and domUscrash

Tue Mar 18 11:54:43 UTC 2008
Pasi Kärkkäinen <pasik at iki.fi>

On Mon, Mar 17, 2008 at 05:30:21PM -0400, Ross S. W. Walker wrote:
> Tim Verhoeven wrote:
> > On Mon, Mar 17, 2008 at 8:05 PM, Nathan Grennan 
> > <centos at cygnusx-1.org> wrote:
> > >   I have a CentOS 5.1 dom0 running on a machine with two cores and 4gb
> > >  of memory. It runs three 4.6 domUs and one 5.1 domU. Just out of the
> > >  blue the other night all the 4.6 domUs crashed, but the dom0 stayed up.
> > >  I ran xm console (domU-name) and got the Oops information below. I
> > >  didn't get anything from the 5.1 domU. I think it had been rebooted a
> > >  few days before and hadn't come up because of a initrd issue.
> > >
> > >  First 4.6 domU:
> > >
> > >  kernel BUG at arch/i386/mm/pgtable-xen.c:306!
> > ...snip...
> > 
> > Hi, I'm moving this thread to the CentOS-virt mailinglist (please
> > remove the centos mailinglist to everyone replying to this mail) since
> > it is more suited for these kind of questions.
> > 
> > Question, If I read those crashes correctly your 4.6 domU is a 32 bit
> > one ? What platform is your dom0 32 or 64 bit? Running a 32 bit domU
> > on a 64 bit dom0 is currently not really stable. This is suppose to
> > improve with 5.2
> 
> I agree with Tim. I have just about the same setup as you at
> home, dual core, 4GB and I am running x86_64 with 32bit domUs
> and the only way I was able to get them to run reliably was
> using the Xen 3.2 from xen.org.
> 
> I hope 5.2 finally moves completely over to 3.2 with all it's
> features instead of this Frankenstein version it has where it
> glues the Xen 3.0.3 user land tools onto a highly patched 3.1
> hypervisor forcing the user to try and use their swiss army
> knife libvirt to manage the mess. Ugh! I just want Xen and
> to manage it through Xen!
> 

el 5.2 will be based on xen 3.1.2 _hypervisor_ at least that's what 
upstream says in the release notes..

https://www.redhat.com/archives/rhelv5-list/2008-March/msg00111.html

"+ Xen hypervisor rebase to 3.1.2"

package list / changes:

xen: 3.0.3-41.el5 -> 3.0.3-55.el5

So yeah.. :)

-- Pasi