Thanks a lot. I have updated the doc.
Ling
Ling Gao
Poughkeepsie Unix Development Lab
IBM Systems and Technology Group
Internal: T/L 293-5692
External: [email protected], 845-433-5692
"I never worry about the future. It comes soon enough." --- Albert
Einstein
From: Christian Caruthers <[email protected]>
To: xCAT Users Mailing list <[email protected]>
Date: 04/17/2015 01:05 PM
Subject: Re: [xcat-user] Wiki Edit
Sorry, to answer your questions, .note.module.sig is the portion of the
object file (in this case, the kernel module) objcopy is removing. It's
not a separate file. Also, module.ko was just an example. Using the
Adaptec AACRAID example on the site, the steps would be:
cd /opt/xcat/share/xcat/netboot/genesis/x86_64/fs/lib/modules/2.6.32-431.
el6.x86_64/kernel/drivers/scsi/aacraid
objcopy -R .note.module.sig aacraid.ko new_ aacraid.ko
mv new_ aacraid.ko aacraid.ko
Regards,
Christian Caruthers
Senior Consultant - System x Linux HPC
Mobile: 757-289-9872
From: Christian Caruthers [mailto:[email protected]]
Sent: Friday, April 17, 2015 12:53 PM
To: xCAT Users Mailing list
Subject: Re: [xcat-user] Wiki Edit
Not sure what wiki formatting SF is using now, but for mediawiki, I would
just add this to the end of that section:
'''NOTE:''' It's possible to see an error, "module signed with unknown
key" either when running mknb or booting the newly rebuilt genesis kernel.
If this happens, it is necessary to remove the signature from the kernel
module:
<pre>objcopy -R .note.module.sig module.ko new_module.ko</pre>
After this, replace the old module with the new one, rerun 'depmod' and
'mknb'
Regards,
Christian Caruthers
Senior Consultant - System x Linux HPC
Mobile: 757-289-9872
From: Ling Gao [mailto:[email protected]]
Sent: Friday, April 17, 2015 12:16 PM
To: xCAT Users Mailing list
Subject: Re: [xcat-user] Wiki Edit
Hi Christian,
Thanks for the suggestions. Can you be more specific? The following
is the current text. Can you let us know where to add "objcopy -R
.note.module.sig module.ko new_module.ko"? Is .note.module.sig a keyword
or a file name? If it is a file name, does it come with the driver rpm?
Is new_module.ko a new name for the mudule?
Adding Drivers to the Genesis Boot Kernel
The xCAT genesis boot kernel/initrd has most of the necessary IBM drivers
built into it. If you need to add a driver for another type of hardware,
you can put the driver on the xCAT MN and rebuild genesis with using the
mknb command. Here is an example of adding the Adaptec AACRAID driver to
genesis:
Download the tar file and extract the rpm:
tar -zxvf aacraid_linux_rpms_v1.2.1-40300.tgz
Extract aacraid_prebuilt.tgz from the rpm:
rpm2cpio aacraid-1.2.1-40300.rpm | cpio -id '*aacraid_prebuilt.tgz'
List the contents of that tar file and extract the file that matches your
arch, distro, and kernel version:
tar -ztvf aacraid_prebuilt.tgz
tar -zxvf aacraid_prebuilt.tgz aacraid-2.6.32-358.el6.x86_64-x86_64
Use modinfo to verify it is a kernel module and rename it:
modinfo aacraid-2.6.32-358.el6.x86_64-x86_64
mv aacraid-2.6.32-358.el6.x86_64-x86_64 aacraid.ko
Make the appropriate sub-directory in the genesis file system and move the
kernel module there:
mkdir -p
/opt/xcat/share/xcat/netboot/genesis/x86_64/fs/lib/modules/2.6.32-431.el6.x86_64/kernel/drivers/scsi/aacraid
mv aacraid.ko
/opt/xcat/share/xcat/netboot/genesis/x86_64/fs/lib/modules/2.6.32-431.el6.x86_64/kernel/drivers/scsi/aacraid
Rebuild the module dependency file in the genesis file system:
depmod -b /opt/xcat/share/xcat/netboot/genesis/x86_64/fs
2.6.32-431.el6.x86_64
Rebuild genesis:
mknb x86_64
Genesis is now ready to use for discovery. To use the new genesis for
firmware updates or running other utilities on nodes, run nodeset for the
nodes again.
Thanks,
Ling
Ling Gao
Poughkeepsie Unix Development Lab
IBM Systems and Technology Group
Internal: T/L 293-5692
External: [email protected], 845-433-5692
"I never worry about the future. It comes soon enough." --- Albert
Einstein
From: Christian Caruthers <[email protected]>
To: "xCAT Users Mailing list ([email protected])" <
[email protected]>
Date: 04/17/2015 11:36 AM
Subject: [xcat-user] Wiki Edit
Adding a module to the genesis kernel, as outlined here:
https://sourceforge.net/p/xcat/wiki/XCAT_iDataPlex_Advanced_Setup/#adding-drivers-to-the-genesis-boot-kernel
Can result in the following error:
"module signed with unknown key"
Could a note be added to the wiki to use "objcopy -R .note.module.sig
module.ko new_module.ko" as a means to bypass this error?
Regards,
Christian Caruthers
Senior Consultant - System x Linux HPC
Mobile: 757-289-9872
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