Gruesse! * Xavier <shiningxc@xxxxxxxxx> schrieb am [01.12.07 11:11]: Oh, i miss Jame's mail, so in answer you. > On Sat, Dec 01, 2007 at 05:05:46PM +1100, James Rayner wrote: > > the kernel version is also embedded into the individual modules, so you'd > > have to modify the kernel and every module. You might be able to do some > > ugly sed trickery, but I really discourage it -- you're asking for > > trouble.. and it probably won't work. Are you sure? Ay, yes is see: 2.6.23-ARCH SMP preempt mod_unload 686 Ok, this is a "neutral" entry, but changing KERN_VER is not possible, i agree. > > Why would you want to do something like this anyway? As others say: for a quick backup before a kernel-update. For myself i have a own "rescue" kernel on all important machines. But the only way to have such is to build a whole kernel. I thought about an less time expensive method. First thougt myself was for ex. add a VAR to pacman.conf BackupKernel = yes|no and then add something like pre-install/update to kernel26.install file. > But it's still a problem. There was a request for a fallback kernel, but it > was apparently rejected : > http://bugs.archlinux.org/task/7926 I must read this. After James comment about the vermagic entries i mentioned about a "hack" in initrd-hooks to bypass this problem. Ex: we have /lib/modules/kernel26-ARCH which is real 2.6.23.8-1. One woul like to test the new kernel from testing. At the moment testing-kernel overwrites the stock arch kernel. But if (maybe a script): - Backup kernel and initrd-iamge - copy /lib/modules/kernel26-ARCH to a backup in /lib/modules - Have a bootloader entry for backup kernel with a parameter useoldkernel=yes Then a hook in initrd.img check useoldkernel and do: - mv /lib/modules/kernel26-ARCH to something similar - do a symlink or mv from backup module dir to /lib/modules/kernel26-ARCH. I don't know if this could be done in the initrd-image. But if, we have AFAIK no problem with vermagic in the "new" module dir. You see, i puzzle a little round that "problem" ;-) Bye Gerhard -- Don't drink and root!
