On Thu, Oct 2, 2008 at 11:07 AM, Filipe Brandenburger <filbranden@xxxxxxxxx> wrote: > Hi Akemi, > Actually, as you can probably see in my recent post to the CentOS > list, I had to create a custom kernel to support a specific hardware > that I had. I also needed XFS, that's why I did it over the CentOS > Plus kernel. As you later mentioned in your post, xfs is now provided as a kernel module, kmod-xfs. So, you do not really have to go for the cplus kernel if this was the only reason (just a comment). > It was not that hard to do it based on the original instructions, but > there are some differences. For example, the snippet that starts at > line 4779, the one that starts with "#if a rhel kernel, apply the rhel > config options", that one is not present at all on the CentOS kernel, > but I just went ahead and it worked fine. That very change (deleting the "#if a rhel kernel,.." portion) actually originated from the cplus kernel. Mr. Hughes, with his great talent, discovered that the presence of that section (template) was preventing him from customizing the distro kernel when RHEL 5 was released. So, he added that note to the Custom Kernel wiki page as a special note for CentOS-5 only. > Another thing that bit me yesterday is that I used a "buildid" for my > kernel, and then I could no longer load the XFS filesystem. I had to > rebuild the xfs-kmod RPM as well, in that case I had to use a special > rpmbuild command line so that it compiled it only for my arch, only > for the default kernel (not xen, etc.) and for that specific buildid. > I don't recall exactly which command line I used, and my build host > was reinstalled soon after that, but if you wish I could try to > reproduce that environment again in another machine to get it right > and post it here. As posted by Mr. Singh somewhere else, we will soon have kmods that utilize the weak updates feature. This means no more compilation of the kmods for each kernel update. I just heard that the new kmods for the latest CentOS-5 kernel should be out any minutes now. > Thanks a lot! The documentation looked great already, it looks even > better now!!! :-D > > Filipe Thank *you* for all the input and thoughts. Akemi
