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Re: [Xen-devel] Re: Vertualization of Unmodified Operating Systems

To: Ian Pratt <m+Ian.Pratt@xxxxxxxxxxxx>
Subject: Re: [Xen-devel] Re: Vertualization of Unmodified Operating Systems
From: Stefan Kaltenbrunner <stefan@xxxxxxxxxxxxxxxx>
Date: Fri, 21 Apr 2006 21:53:43 +0200
Cc: xen-devel@xxxxxxxxxxxxxxxxxxx, Dave Feustel <dfeustel@xxxxxxxxxxxxxx>
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Ian Pratt wrote:
>>>Xen and OpenBSD running under Xen are rapidly rising to the 
>>top of my 
>>>list of things to work with as general availability of AM2-socket 
>>>motherboards and revision F AMD64 chips approaches. Xen and 
>>>virtualization have been for a while now at the very top of 
>>the list of topics I follow in the news.
>>OpenBSD 3.9 works quite fine (installed using the native 
>>installer in the virtualized environment!) as an unmodified 
>>guest on my Intel VT box, with following caveats:
>>*) pcn(4) - aka AMD Pcnet does not seem to work well with the 
>>emulated one (send works - receive does not)
>>*) ne(4) does work but is complaining about corrupted nic 
>>memory under heavy traffic (does not seem to affect it much 
>>other than logging th errors)
> Thanks for the success report. We haven't been testing OpenBSD so its
> useful to hear it works OK. 

heh - I actually tried to install NetBSD and FreeBSD too but both crash
very early in their installer routines.

> I'd be interested to hear whether pcnet32 works under the latest version
> of qemu, in which case it should be easy to fix on xen/vt.

will try that during the next few days

> Also, are you using a 32, 32p, or 64 bit hypervisor? Have you tried
> other combinations? (I'm guessing you're using a 32b guest, but do you
> have pae enabled?)

32bit hypervisor currently - but I plan to change that and will test
with a 64b guest too.

> Have you tried other combinations? Are there any stress tests you can
> run to give it a good workout?

it successfully completes a full recompile of kernel & userspace which
is usually quite a good test for "working hardware" :-)


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