Good catch. On the initrd, I believe there is a kickstart option that allows
you to define initrd modules and the this is reproduced in
/etc/sysconfig/kernel:INITRD_MODULES so that any kernel updates or runnings of
mkinitrd will include the modules listed.
I may be a little off on where to put this config, but I remember doing it in
the past.
----- Original Message -----
From: Bruce Pennypacker [[email protected]]
Sent: 05/11/2012 02:11 PM AST
To: xCAT Users Mailing list <[email protected]>
Subject: Re: [xcat-user] juggling rhel5 and rhel6 installs
On 5/10/12 5:19 PM, Christian Caruthers wrote:
You might be running into an issue where the 10Gb interface simply
isn't up or the driver isn't loaded when updateflag tries to run. I
haven't used 10Gb interfaces as a primary interface before, but
perhaps it's necessary to make sure the module(s) is/are included in
the initrd? I'm guessing RHEL5 doesn't have this problem? Is there
anything in the RHEL5 templates or xCAT tables spelling out initrd
modules to be included?
They work well enough in RHEL5, without any customization of the
templates. We have a post-install script that would install the
Mellanox drivers, but on RHEL5 since the network is already up the
script is able to retrieve the tarball from our server and build/replace
them. So my guess is that there is a driver in the RHEL5 initrd that's
not in the RHEL6 one...
I was able to modify our Mellanox install script so that it does it as
part of the postscripts section rather than the postbootscripts section
since the network is still active during the first one. The only trick
was to force the network to reactivate (the Mellanox install leaves all
the interfaces down when it completes) so that xCAT could report back to
the server that the kickstart completed. Before I did that the server
would get stuck in an endless kickstart/reboot cycle since xCAT never
got word to update the boot chain. I figured this approach would be a
little easier than trying to build a custom initrd & maintain it as new
kernel updates are released.
-Bruce
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