Re: [Xen-devel] xen-unstable on OL6 (RHEL6 clone) problems

[Pasi Kärkkäinen <pasik@xxxxxx>]

On Fri, Feb 11, 2011 at 04:53:14PM +0000, John Haxby wrote:
> On 11/02/11 07:49, Ian Campbell wrote:
> > The upgrade notes should continue to consistently point to the relevant
> > distro documentation and to provide associated guidance.
> 
> I hesitate to just say "me too" but but Ian is dead right here.  The
> examples in http://wiki.xensource.com/xenwiki/MigrationGuideToXen4.1+
> that Dan has just referred me to are exactly what's needed here.  The
> real documentation for RHEL et alia
> (/usr/share/doc/initscripts-*/sysconfig.txt) are as close as you'll get
> to definitive without reading the shell scripts, but the examples are
> the perfect start.
> 
> While I'm talking about bridges though, RHEL6 (and clones including OL6)
> have a problem with brctl.  RHEL6 adds IGMP snooping support for bridges
> and this is provided by kernel patches.  If you're using the xen dom0
> kernel this support is not present and brctl complains bitterly and
> repeatedly that /sys/class/net/xenbr0/bridge (or similar) doesn't
> exist.  What is actually means is that a various files in that directory
> don't exist.   Luckily, Fedora 14's bridge-utils-1.2-9.fc13 RPM doesn't
> expect the IGMP snooping stuff and works perfectly on the dom0 kernel.  
> You could also rebuild the RHEL6 bridge-utils RPM and just miss out
> bridge-utils-1.2-Add_IGMP_snooping_support.patch
> 

.. and we need someone to start maintaining xen dom0 capable kernel based
on the el6 2.6.32 kernel.. so all the security fixes and extra features 
are there out-of-the-box :)

-- Pasi


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