Some machines don't have BIOS support for enabling VT. If you want to check
whether there's any way to make this work you could maybe have a look to see
if there's a BIOS update that will enable functionality (or call the
manufacturer and ask them what's up).
Cheers,
Mark
On Monday 30 April 2007, Suman K wrote:
> I have xen working on Intel(R) Xeon(TM) CPU 3.40GHz, its a HP xw6200
> workstation. I thought all the Xeon processor come with VT. Here is a link
> http://www.intel.com/products/processor_number/chart/xeon.htm
> I search numerous pages from Intel and everything says Xeon processor
> supports VT. This machine seem to have a E7525 chipset. Still, xen
> complains about no VT. I am just so confused at this point and trying to
> find out if I have the wrong processor or missing something. I search all
> BIOS, it does have an option for VT enable disable but does have HT.
>
> I would really appreciate any ideas or experience in this regard?
>
> Thanks,
>
>
> Suman K
> Linux Engineer
> San Diego, CA
>
> http://www.skinetwork.org
> ski@xxxxxxxxxxxxxx
> - Powered by Linux
>
> ----- Original Message ----
> From: Tim Post <tim.post@xxxxxxxxxxx>
> To: Steve Wray <steve.wray@xxxxxxxxx>
> Cc: xen-users@xxxxxxxxxxxxxxxxxxx
> Sent: Sunday, April 29, 2007 8:39:25 PM
> Subject: Re: [Xen-users] xen 2.0.6, on_crash = 'restart' not restarting
> after crash
>
> On Mon, 2007-04-30 at 09:35 +1200, Steve Wray wrote:
> > Hi all,
> >
> > We have a xen instance (under xen 2.0.6) thats pretty unreliable; the
> > domU crashes fairly regularly.
>
> If you must use Xen v2, try 2.0.7 (or the last 2.0-testing Mercurial).
> 2.0.7 isn't the most feature packed release but it is extremely stable.
>
> I'd really recommend upgrading to 3.0.4-testing or 3.0.5-testing (I
> think its at rc4 now) unless you depend on an older kernel version. I
> have some that have to stay at 2.0.7 until I find a better fit for PV
> open SSI clusters.
>
> > Yes, we are trying to figure out why, but in the meantime I discovered
> > that there is a config option 'on_crash'.
> >
> > We've implemented this in the config file for that xen domain and we
> > have this in the config file for the domain:
> >
> > restart = 'always'
> >
> > on_crash = 'restart'
>
> This really depends on Xen's ability to see the dom-u as 'crashed'.
> Typical 'crashes' on older kernels don't look much different to Xen than
> a running or blocking state.
>
> Examples would be, if its non responsive and shown as running, the guest
> is most likely just spiraling out of control.
>
> If its non responsive and blocking, any number of things could be going
> wrong, but Xen doesn't see it. Unless its a full out kernel panic, most
> likely Xen 2 won't see your guests crash.
>
> Can you give more details of the crash?
>
> > The domain has indeed crashed since this was implemented and did not
> > appear to recover, at least not for the 6 minutes we gave it to restart
> > the domain:
> >
> > [2007-04-30 09:06:19 xend] INFO (XendRoot:112) EVENT> xend.domain.exit
> > ['domUhostname', '14', 'crash']
> > [2007-04-30 09:06:19 xend] INFO (XendRoot:112) EVENT>
> > xend.domain.destroy ['domUhostname', '14']
> > [2007-04-30 09:06:20 xend] INFO (XendRoot:112) EVENT> xend.domain.died
> > ['domUhostname', '14']
> > [2007-04-30 09:12:03 xend] DEBUG (XendDomainInfo:720) init_domain>
> > Created domain=15 name=domUhostname memory=1200
> > [2007-04-30 09:12:03 xend] INFO (console:94) Created console id=14
> > domain=15 port=9615
> >
> >
> > And are there any other things we can do to restart a domain after a
> > crash?
>
> Many people favor some kind of key pairing to enable a centralized
> monitor to be able to restart guests in the event of failure, even with
> newer versions of Xen, or using the API.
>
> If you aren't depending on a very specific older patched kernel, I'd
> just move up to 3.0.4-testing. 3.0.5-testing has been pretty stable too.
>
> Hope this helps,
> --Tim
>
>
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--
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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