Description of problem: I was testing the patch for BZ#230552 Booting on Altix4 (dual 330) gets into nash but the fails with the message: Red Hat nash version 5.1.19.6 starting Unable to find device-mapper major/minor Reading all physical volumes. This may take a while... No volume groups found Volume group "VolGroup00" not found mount: could not find filesystem '/dev/root' setuproot: moving /dev failed: No such file or directory setuproot: error mounting /proc: No such file or directory setuproot: error mounting /sys: No such file or directory switchroot: mount failed: No such file or directory Kernel panic - not syncing: Attempted to kill init! Version-Release number of selected component (if applicable): rawhide-20070306 How reproducible: both times tried Steps to Reproduce: 1. Boot to RHEL5 2. Patch rawhide kernel and install 3. Boot rawhide kernel w/ patch Actual results: Kernel panic Expected results: Login prompt Additional info:
Best guess offhand is that this has to do with the big libata overhaul. Quite a few systems are failing to boot recent rawhide kernels, especially if scsi disks are involved, because the driver/drives aren't ready yet by the time we try to access them. Previously, the old ata code introduced enough latency in the module load process, that the drives were up by the time we tried prodding them. (See bug #220470 for reference). As detailed there, you may be able to add a 5-10 second delay in the init script in your initrd to get things working...
How's this looking with the current tree ?