Re: [Xen-users] Re: Choosing O/S for dom0 host with xen 3.2 - best option?

[Steven Timm <timm@xxxxxxxx>]

Centos 5.1 is dependent on their Upstream Vendor (the big vendor with
the red hat) for whatever Xen or kernels they did. According to
what I can find in those release nodes, they did their usual pattern
of trying to shoehorn most but not all of the xen 3.1 patches
into the distro and still call it xen 3.0.3.  The one notable
difference between this and the real xen 3.1 that I've found so
far is that according to the release notes, 32-bit PAE domU
on 64-bit dom0 is a "technology preview" --not supported feature
and I can testify that it doesn't work if you want to do any sort of
I/O at all.  I went back to the xensource-compiled tarballs.

Steve Timm




On Mon, 4 Feb 2008, xensource.com@xxxxxxxxxxxxxxxxxxx wrote:

> > > >  How did you get xen 3.1 ?
> > >  And he keeps saying it, too. You can confirm whatever it is by looking
> > >  inside the SRPM for the source code.
> > CentOS definitely comes with 3.0.3.
> yes/no...
>
>   [root@office2 raid]# rpm -qa | grep -i xen
>   xen-libs-3.0.3-41.el5
>   kernel-xen-2.6.18-53.el5
>   kmod-gnbd-xen-0.1.4-12.el5
>   xen-3.0.3-41.el5
>   kmod-gfs-xen-0.1.19-7.el5
>
>
> that would indicate 3.0 ... however xm dmesg gives something else...
>
> [root@office2 raid]# xm dmesg | more
> __  __            _____  _   ___    ____ _____      _ ____
> \ \/ /___ _ __   |___ / / | / _ \  | ___|___ /  ___| | ___|
>  \  // _ \ 7_ \    |_ \ | || | | |_|___ \ |_ \ / _ \ |___ \
>  /  \  __/ | | |  ___) || || |_| |__|__) |__) |  __/ |___) |
> /_/\_\___|_| |_| |____(_)_(_)___/  |____/____(_)___|_|____/
>
> http://www.cl.cam.ac.uk/netos/xen
> University of Cambridge Computer Laboratory
>
> Xen version 3.1.0-53.el5 (mockbuild@) (gcc version 4.1.2 20070626 (Red Hat 
> 4.1.
> 2-14)) Mon Nov 12 02:16:12 EST 2007
> Latest ChangeSet: unavailable
>
>
> -----------
>
> rather confusing, but I see why one would think that centos 5.1
> was not xen 3.0
>
> I haven't really worked with this install yet. So maybe there's
> more to the picture than I see.
>
> -Tom
>
>
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> http://lists.xensource.com/xen-users
--
------------------------------------------------------------------
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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