Re: [Xen-users] Dom0 crash on hvm creation

[Mark Williamson <mark.williamson@xxxxxxxxxxxx>]

> Did centos 5.1 do something different than the Red Hat on which
> they were based?  the Red Hat 5 /update 1 is still claiming to
> have xen 3.0.3 and 32-bit guests on 64bit dom0 as a "technology preview",
> i.e. it doesn't work yet,.

From what I've heard, Redhat haven't changed the package version number but 
it's actually now based on 3.1 under RHEL 5.1...  I know how crazy that 
sounds, but there was definitely supposed to be a Xen update in this release 
and at least two people on the mailing list have said that it *is* 3.1 even 
though it claims not to be!

I'm not sure what's going on there; my CentOS 5 box isn't at 5.1 yet but in 
any case I'm currently running a custom Xen on there.

> If anyone does have that feature working 
> on either redhat or centos, let me know.

As for 64-bit status I don't know what RedHat's policy is on that, even since 
the 5.1 release.

Cheers,
Mark

> Steve
>
>
> ------------------------------------------------------------------
> Steven C. Timm, Ph.D  (630) 840-8525
> timm@xxxxxxxx  http://home.fnal.gov/~timm/
> Fermilab Computing Division, Scientific Computing Facilities,
> Grid Facilities Department, FermiGrid Services Group, Assistant Group
> Leader.
>
> On Tue, 4 Dec 2007, Mark Williamson wrote:
> > Hi Brendan,
> >
> > CentOS 5.1 is available now, bundling a Xen derived from 3.1.  Are you
> > able to try this and see if it solves your problem?  The HVM support in
> > 3.1 is much improved from 3.0.3 (as evidenced by Redhat now talking about
> > Windows guests, IIRC).
> >
> > Cheers,
> > Mark
> >
> > On Friday 16 November 2007, Brendan Wood wrote:
> >> Hello,
> >>
> >> I'm having some trouble trying to run Centos4 hvm domU domains on a
> >> Centos 5 server running kernel-2.6.18-8.1.15.el5.centos.plusxen, using
> >> xen 3.0.3-25.0.4.el5 on x86_64 architecture. On three out of four of the
> >> servers I've tried, I will get a total system (dom0) crash when trying
> >> to start a fully virtualized domU. I will run `xm create xen_test`, it
> >> will start, then return to the command line, but invariably within five
> >> to ten seconds the entire system will freeze. I get no error messages to
> >> any of the logs, or anything output to the console. Absolutely nothing
> >> responds. I can't find any record of the error after power cycling the
> >> machine.
> >>
> >> The interesting thing is that on one server of the same type out of the
> >> four I've tried, it works absolutely fine every time. I've tried moving
> >> the hvm image and config to the other servers but those fail as well.
> >> There might be some differences in the hardware components used but the
> >> servers have the same board and same CPUs, with the same version of
> >> Centos and Xen.
> >>
> >> I did read that some people were having problems with hvm crashing the
> >> dom0 a while back on the list when using AMD 64 cpus. I don't know if
> >> that would apply to this version of xen or if it might be somehow
> >> related, but I thought it was a good chance. Porting xen 3.1 to the
> >> kernel-xen RPM is an option, but one I'd really like to avoid if
> >> possible.
> >>
> >> Thanks,
> >>
> >> Brendan Wood
> >>
> >> _______________________________________________
> >> Xen-users mailing list
> >> Xen-users@xxxxxxxxxxxxxxxxxxx
> >> http://lists.xensource.com/xen-users
> >
> > --
> > Dave: Just a question. What use is a unicyle with no seat?  And no
> > pedals! Mark: To answer a question with a question: What use is a
> > skateboard? Dave: Skateboards have wheels.
> > Mark: My wheel has a wheel!
> >
> > _______________________________________________
> > Xen-users mailing list
> > Xen-users@xxxxxxxxxxxxxxxxxxx
> > http://lists.xensource.com/xen-users



-- 
Dave: Just a question. What use is a unicyle with no seat?  And no pedals!
Mark: To answer a question with a question: What use is a skateboard?
Dave: Skateboards have wheels.
Mark: My wheel has a wheel!

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