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Re: [Xen-users] Paravirtualized vs HVM - how big is the performance gap?

To: "Ferreira, N. L. (Nuno)" <n.l.ferreira@xxxxx>
Subject: Re: [Xen-users] Paravirtualized vs HVM - how big is the performance gap?
From: Steven Timm <timm@xxxxxxxx>
Date: Fri, 27 Mar 2009 10:08:42 -0500 (CDT)
Cc: Xen-user List <xen-users@xxxxxxxxxxxxxxxxxxx>
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It was possible in the early SL4 (4.2 and later to use older Xen kernel tarballs from xen.org Xen 3.0.2 or so, to run a dom0. I still
have a couple development machines like that.  But it was
never natively built into SL until 4.5 and then it was only for domU.
If you want a SL dom0 then you should be running SL5.2 or 5.3 which
was just released.  DomU support is available for 4.5 and better.

Steve Timm



On Fri, 27 Mar 2009, Ferreira, N. L. (Nuno) wrote:

Ok.
So go for a SL 4.7 installation, unless you really need the 4.3 one.

Good luck.

N.

P.S. It is from experience (and talknig with some sysadmins) that you are better off putting a dom0 with a SL OS. Go for a centOS, fedora or RHEL based one, and then build your SL machines on top.

Tim Edwards wrote:
Ferreira, N. L. (Nuno) wrote:

Hi Tim

I have a dom0 server running SL 5.1 (i386), and I was able to install a
SL 4.7 (i386) domU.
When you say virt-install command/libvirt do not allow, what are the
errors you are getting?

Cheers,
N.


I've looked into the virt-install command in more detail now. The
problem is that the SL4.3 installation tree has no images/xen/
directory, whereas more recent RHEL/SL 4.x (eg. 4.6, 4.7) do. The
virt-install expects to retrieve a vmlinuz and initrd.img from there.
(The error is "Invalid file location given: No such file or directory")

Tim Edwards

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--
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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.

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