Mailinglist Archive: opensuse-autoinstall (46 mails)

[Mike Marion <mmarion@xxxxxxxxxxxx>]

On Wed, Dec 12, 2007 at 11:15:34AM -0800, Dan Stromberg wrote:

> So we're wanting to change our installs to use the same kernel, to see
> if we can get those RPM's added via the same mechanism we're using for
> most of our RPM's (in a post install chroot script), rather than
> needing to add them via an rc script.

I've done this.  With SLES/SLED at least. 

To be as similar to the suse install as possible, I use
the (already built) -default version of my updated kernel.  Use rpm2cpio
and cpio to dump files somewhere.  Put vmlinuz in place for initial pxe
boot.  

I then take the initrd from the installer and basically just replace the
modules in there with copies of my kernel's modules.  

This is from a sles9-sp3 one, but the idea is the same:
Changed <initrd>/modules link:
modules -> lib/modules/2.6.16-override-default/initrd

 Note: We're doing a sles9-sp3 image with the kernel (and a few other
 needed bits like updated udev, mkinitrd, etc) built on top of sles9-sp3
 form the sles10 src.rpm files.  We also rev'd the kernel from
 2.6.16.21-0.8 to 2.6.16.21-0.9 internally for readability.. the only
 changes we did were to add in the autofs5 patches. 

Differences in the <initrd>/lib/modules pathing:
2.6.16.21-0.9-default
2.6.16.21-override-default -> 2.6.16-override-default
2.6.16-override-default
2.6.5-override-default -> 2.6.16-override-default

You don't have to do it this way, but I did links so that I could just
copy over a modules.dep file, example of ata_piix module:
$ ls -l 2.6.16-override-default/initrd/ata_piix.ko
lrwxrwxrwx 1 root bin 59 2007-06-11 15:08 
2.6.16-override-default/initrd/ata_piix.ko -> 
../../2.6.16.21-0.9-default/kernel/drivers/scsi/ata_piix.ko

> From modules.dep (used one from above kernel rpm):
$ grep ata_piix 2.6.16.21-0.9-default/modules.dep
/lib/modules/2.6.16.21-0.9-default/kernel/drivers/scsi/ata_piix.ko: 
/lib/modules/2.6.16.21-0.9-default/kernel/drivers/scsi/libata.ko 
/lib/modules/2.6.16.21-0.9-default/kernel/drivers/scsi/scsi_mod.ko

Basically I copied over the /lib/modules/2.6.16.21-0.9-default path into
the initrd, then made the links via:
$ cd <initrd>/lib/modules/2.6.16-override-default/initrd
$ find ../../2.6.16.21-0.9-default -type f -name \*.ko -exec ln -s {} .  \;

I just checked and I never did anything to the modules in the root file
(in the install source "boot" path) so I think it used everything from
the initrd since I dumped them all in there.

Now our installs use this updated kernel, and install the same updated
kernel (and rpms that rely on it, like openafs) from my updates
repository.  

-- 
Mike Marion-Unix SysAdmin/Staff IT Engineer-http://www.qualcomm.com
Homer: I'm here to deliver a package to Marge Simpson.....!
Guy: Where's the package?
Homer: [looks from side to side]........dammit! 
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