I have some more information. Also, I'm no longer sure that this isn't some sort of mkinitrd(8) problem, and may be related to another thread in this mailing list about the ext3 modules not being in the SMP kernel. I'm now thinking I have a similar problem, except my missing module appears to be "megaraid". This is HARDWARE RAID, not software RAID, so I'm not exactly sure why that module is needed (rather than the generic scsi_sd module). Even booting the rescue disk and trying to re-run the mkinitrd failed, saying it couldn't resolve the module dependency for megaraid. To debug what was going on I manually extracted the initrd. First, booting the rescue CD. rescue$ cd /mnt/sysimage/boot rescue$ mkdir tmpimg rescue$ cd tmpimg rescue$ gunzip -c ../initrd-2.6.9-1.667.img | cpio -idmv At that point I edited the "init" file to, 1. Comment out the line "setquiet" 2. Change the "lvm vgscan" to "lvm vgscan -v" Edit the etc/lvm/lvm.conf file and turned verbose=1 and level=3 in the log() function. Repackage up a new image. First mv the original one out of the way to save it. rescue$ find . | cpio --quiet -c -o >../newinitrd rescue$ cd .. rescue$ gzip -9 < newinitrd > initrd-2.6.9-1.667.img REBOOT, non-rescue Then on reboot I get a lot more out. It gets to loading "aic7xxx.ko" and pauses a long time. Then a bunch of output goes by, most of which I loose. The ending looks something like this: vgmknodes setting global/locking_type to 1 vgmknodes setting global/loging_dir to /var/log/lvm vgmknodes File-based locking enabled. vgmknodes Finding all logical volumes vgmknodes No volume groups found vgmknodes Dumping persistent devide cache to /etc/lvm/.cache Creating root device Mounting root filesystem .... (eventually kernel panic because no / filesystem) In rescue mode again I probe the /proc/scsi and find that the hardware RAID (which is a Dell PowerEdge Expandable RAID using a PERC 4/DC controller) shows up as being MegaRAID Model: LD0 RAID0 39760R Rev 3.41 MegaRAID Model: LD1 RAID0 39760R Rev 3.41 The hardware RAID is configured to have two logical drives, each in RAID-0. The SCSI device mappings are Bus 1 Dev 6 SCSI-ID 0 LUN 0 /dev/sda1 - Dell Utility partition (type 0xde) /dev/sda2 - /boot partition (type 0x83) /dev/sda3 - LVM partition for VG "vg00" (type 0x8e) Bus 1 Dev 6 SCSI-ID 1 LUN 0 /dev/sdb1 - LVM partition for VG "vg00" (type 0x8e) So this most certainly looks like a megaraid module issue. But yet the rescue disc boots and finds it just fine. How can I repair this? -- Deron Meranda
