Red Hat Bugzilla – Bug 197695
add a frontend to the kexec-tools
Last modified: 2007-11-30 17:11:36 EST
Description of problem: The kexec-tools does not have a configurable frontend to mimic what netdump and diskdump used. The attached patches add that functionality. What these patches do is add functionality to do all the kernel core capturing inside the initrd (as opposed to relying on the disk). When building the initrd file, the kdump.conf is consulted to determine where to place the resulting kernel core image and an appropriate image is created. To do this correctly, th e mkinitrd tools had to support a new command and I had to create numerous new files. Simplicity was the aim here, however the problem has always been complex so my goal may take a few iterations to achieve. These patches have been baking for awhile with only a few people testing them and providing feedback (mainly IBM). I have posted them to the kexec-tools mailing list numerous times. Perhaps these patches are very stable! ;) I would like to see inclusion of them in our package to allow for more broader testing. Hopefully, these patches will help ween customers off diskdump and netdump. NOTE: backwards compatibility is preserved if noone initially configures the /etc/kdump.conf file (which is to just mount the disk and save the file there). This allows users to upgrade and not see any ill-effects.
Created attachment 131939 [details] the infrastructure patches This patch modifies the build infrastructure to handle the new files correctly.
Created attachment 131941 [details] used to copy the core dump image to the correct location Due to limitations in the grubby application, in order to properly copy kernel core image to timestamped locations, one needs to do this inside an app.
Created attachment 131942 [details] builds the kcp.c file and installs it in the right location
Created attachment 131943 [details] the default config file
Created attachment 131944 [details] this script generates the initrd file for the kdump facility This is basically a copy/paste job of mkinitrd with additional stuff oriented towards kdump. The additional stuff constitutes less than 5% of the whole file. I don't know the best way to maintain this (and possibly keep in synch with mkinitrd). Peter Jones suggested he would make a library to I could use to include here (and to be used by mkinitrd). This would make things easier. However, he has been busy and hasn't gotten around to it. For now I submit this file as whole (knowing it is it pain to review my changes) until someone has a better idea).
your infrastructure patch add a Patch502: kexec-tools-1.101-Makefile-kcp.patch Yet, I see no such patch attached here? Can you attach it please? Thanks
Created attachment 132692 [details] patch to build the kcp binary Sorry about that. Lost in the list of files..
checked in. Thanks!
The first attached patch has changes to kdump.init that never got applied. :(
Sorry about that Don. It appears I had the kdump.init patched in to a version of the file living on a different branch. Not sure how it missed my merge. Anyway, its in there now, checked in and built for FC6