Red Hat Bugzilla – Bug 39743
needRedHatCD variable in loader.c wrongly used for ks.cfg on cdrom
Last modified: 2007-04-18 12:33:08 EDT
From Bugzilla Helper: User-Agent: Mozilla/4.76 [en] (X11; U; Linux 2.4.3-diskless i686) Description of problem: When setupCdrom is called with needRedHatCD set to zero, the cd should not be unmounted before returning. This is needed where the distribution is on NFS, but the ks.cfg file is local (like on floppy). Here is patch: --- loader.c Tue May 1 16:17:57 2001 +++ loader.c.fixed Tue May 1 16:32:08 2001 @@ -1004,8 +1004,8 @@ devMakeInode(kd->known[i].name, "/tmp/cdrom"); if (!doPwMount("/tmp/cdrom", "/mnt/source", "iso9660", 1, 0, NULL, NULL)) { - if (!needRedHatCD || - !access("/mnt/source/RedHat/base/stage2.img", R_OK)) { + if (!needRedHatCD) return (char*)1; + if (!access("/mnt/source/RedHat/base/stage2.img", R_OK)) { if (!mountLoopback("/mnt/source/RedHat/base/stage2.img", "/mnt/runtime", "loop0")) { buf = malloc(200); How reproducible: Always Steps to Reproduce: 1.create bootable cdrom from kickstart floppy 2.use "append ks=cdrom:/ks.cfg initrd=initrd.img network devfs=nomount" in syslinux.cfg 3.include ks.cfg in cdrom top level directory 4.kickstart install won't find ks.cfg, because the cdrom was prematurely unmounted Actual Results: no ks.cfg file found Expected Results: that the local ks.cfg file be used Additional info: vmlinuz kernel on cdrom also needed IDE-CDROM compiled in
*** This bug has been marked as a duplicate of 22285 ***
How do I implement this patch on my system?
Well, the easiest way to get kickstart files on the cdrom to work is to put the kickstart file inside the initrd.img before you burn the cd. Applying the patch would be a pretty lengthy procedure. You'd have to apply the patch to the loader in anaconda, and recompile it. Then you'd have to strip the debug info out of the loader binary. Then you need to replace the loader in the initrd.img with the new loader that you compiled. Then, you would need to burn a cd with the ISO that contains the modified initrd.
So how do I put the kickstart file inside the initrd.img? I have already applied the patch and recomiled anaconda. How do I get the debug info out of the loader binary and replace the loader in initrd.img with the new one?
> ...How do I get the > debug info out of the loader binary After patching loader.c (found within the anaconda source rpm, as I recall), "make loader" (some libraries may need to be compiled, too), then "strip loader." Then copy it into the image. The script I wrote (below) is very helpful for manipulating boot images. I gather the alternative is to copy your ks.cfg into the initrd image (also use script for that) and having the syslinux.cfg file contain: append ks=file:/ks.cfg initrd=initrd.img network devfs=nomount where file:/ is the top level directory of the initrd image--haven't tried that, though it would seem simpler. cat rhimgedit #!/bin/csh -f # This work is released by Integrity Linux, a division # of Integrity Networking Systems, Albuquerque, New Mexico # under the terms of the GNU GPL, version 2. if ( ! -o / ) then echo Error must be root to run exit 1 endif if ($#argv == 0) then echo Usage: $0 RedHat-floppy.img exit 1 endif onintr cleanup cp $1 /tmp/$$.img rm -rf /tmp/$$-mount >& /dev/null mkdir /tmp/$$-mount mount -t msdos -o loop /tmp/$$.img /tmp/$$-mount if ($status) then echo Error: Failed to mount image as msdos loopback goto cleanup endif (cd /tmp/$$-mount ; xterm) & cp /tmp/$$-mount/initrd.img /tmp/$$-initrd.img.gz gunzip /tmp/$$-initrd.img.gz rm -rf /tmp/$$-imount >& /dev/null mkdir /tmp/$$-imount mount -t ext2 -o loop /tmp/$$-initrd.img /tmp/$$-imount if ($status) then echo Error: Failed to mount initrd image as ext2 loopback goto cleanup endif (cd /tmp/$$-imount ; xterm) & mkdir /tmp/$$-modules set sourcemods = /tmp/$$-imount/modules/modules.cgz (cd /tmp/$$-modules ; gunzip -c $sourcemods | cpio -i --make-directories ; xterm) wait wait (cd /tmp/$$-modules ; /bin/ls -1 */*.o | cpio --quiet -Hcrc -o | gzip -9 > $sourcemods) umount /tmp/$$-imount gzip -best /tmp/$$-initrd.img cp /tmp/$$-initrd.img.gz /tmp/$$-mount/initrd.img umount /tmp/$$-mount echo /bin/echo -n 'save changes? y/[n] ' set save = $< if ("$save" == 'y' || "$save" == 'Y') then cp /tmp/$$.img $1 endif ################ cleanup: rm /tmp/$$.img rm -rf /tmp/$$-mount >& /dev/null rm -rf /tmp/$$-imount >& /dev/null rm -rf /tmp/$$-modules >& /dev/null rm /tmp/$$-initrd.img.gz >& /dev/null rm /tmp/$$-mount.img >& /dev/null