Re: [Xen-users] RHEL6 beta vs. Xen

[Pasi Kärkkäinen <pasik@xxxxxx>]

On Wed, Jun 09, 2010 at 10:16:51AM -0400, Frank Pikelner wrote:
>    One option may be to consider Fedora as they appear to be working to add
>    Xen back in the next release:
> 
>    [1]http://www.networkworld.com/community/node/61745
> 
>    There are also Oracle Linux and CentOS that may do something about
>    including Xen.
> 

Oracle is actively developing Xen.. especially pvops dom0 kernel.
And Oracle has their own Xen-based virtualization solution (Oracle VM).

-- Pasi

>    Frank
> 
>    -----Original Message-----
>    From: xen-users-bounces@xxxxxxxxxxxxxxxxxxx on behalf of Pasi Kärkkäinen
>    Sent: Wed 6/9/2010 10:14 AM
>    To: Steven Timm
>    Cc: xen-users@xxxxxxxxxxxxxxxxxxx
>    Subject: Re: [Xen-users] RHEL6 beta vs. Xen
> 
>    On Wed, Jun 09, 2010 at 09:04:06AM -0500, Steven Timm wrote:
>    > On Wed, 9 Jun 2010, Pasi Kärkkäinen wrote:
>    >
>    >> On Tue, Jun 08, 2010 at 10:31:48AM -0500, Steven Timm wrote:
>    >>>
>    >>> Has anyone yet figured out what it would take to make Xen
>    >>> run on top of the Red Hat Enterprise Linux 6 beta?
>    >>> We are heavily invested in Xen under RHEL5 (actually
>    >>> a redhat clone) distribution, but already the xen kernel
>    >>> they are shipping with update 4 and 5 is shaky and has bugs
>    >>> which they don't seem to be in a hurry to fix.
>    >>>
>    >>> Basically I am wondering if Redhat 6 is just going to
>    >>> have benign neglect and ignore Xen, or if there is going
>    >>> to be stuff built into the OS which actively mitigates
>    >>> against Xen in favor of KVM.
>    >>>
>    >>
>    >> RHEL6 won't have Xen dom0 capability.
>    >>
>    > Yes I know that.
>    > There was a time in the past when RHEL4 didn't have it
>    > either. In those days people did a lot of work to
>    > patch the Xen hypervisor into a kernel that looked a lot like
>    > the RedHat kernel and could run on top of RHEL4.  There were
>    > even RPMS of a pre-compiled kernel.  That's what I
>    > am trying to figure out.. are there enough people who
>    > are both locked into RedHat and committed to Xen that
>    > it would make sense to try some kind of effort like that again?
>    >
> 
>    Yep.. I'm sure people will make rpms of Xen and dom0 kernel for EL6.
> 
>    >
>    >> RHEL6 will run as Xen PV and HVM domUs though.
>    >> You can use RHEL5 Xen dom0 to run RHEL6 Xen PV guests.
>    >>
>    >> Or you can use Citrix Xenserver, or XCP to run RHEL6 guests.
>    >>
>    > Site OS baselines constrain what I can do in that regard.
>    > RedHat and derivatives (Scientific Linux) are only distros approved at
>    > my facility
>    > Unless someone comes up with a way to do an alternative
>    kernel/hypervisor
>    > that can run a dom0 in a RedHat OS environment (such as was the case in
>    > xen 3.0.2-> xen 3.0.4 days) , there will be a lot
>    > of us that are forced out of the Xen business, which is of
>    > course exactly RedHat's plan.  And there are a lot of apps I run
>    > where KVM just doesn't cut it yet either in terms of I/O throughput
>    > or in terms of reliability.
>    >
> 
>    Both Citrix XenServer and XCP are based on RHEL5 derivatives :)
> 
>    But yeah.. I'm pretty sure there will be thirdparty RPMs of Xen
>    hypervisor/tools
>    and dom0 kernel for RHEL6. Just like there is Xen 3.4 and 4.0 for EL5..
> 
>    -- Pasi
> 
>    > Steve Timm
>    >
>    >
>    >
>    >> -- Pasi
>    >>
>    >>
>    >
>    > --
>    > ------------------------------------------------------------------
>    > Steven C. Timm, Ph.D  (630) 840-8525
>    > timm@xxxxxxxx  [2]http://home.fnal.gov/~timm/
>    > Fermilab Computing Division, Scientific Computing Facilities,
>    > Grid Facilities Department, FermiGrid Services Group, Assistant Group
>    Leader.
>    >
> 
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> References
> 
>    Visible links
>    1. http://www.networkworld.com/community/node/61745
>    2. http://home.fnal.gov/~timm/
>    3. http://lists.xensource.com/xen-users

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