I'm trying to get this to work but am running into problems. I followed the steps on http://www.knoppix.net/wiki/LVM2 I had to run vgmknodes in order for /dev/VolGroup00 to be there.

Now when I run mount -t ext3 /dev/VolGroup00/LogVol00 /mnt/tmp it says:

So, I try dmesg | tail:
I even tried mounting the / partition and copying the line from there that mounts the lvm, and putting it in knoppix's fstab and it says the same thing.

My guess is that one or both of the following is the culprit:

1. Two of the drives in the lvm are sata, the other 6 are ide. Maybe its not liking this.

2. I created raid array's on the drives, so there are md0, md1, md2. And then I did an lvm over those three arrays, so they are under one mount point. Do I need to do something extra in knoppix so iit has raid support?

I'm thinking this isn't working because i have the drives in a software raid. But, I did make some progress.

So far I can bring up two of the raid array's in knoppix by doing: mdadm -A /dev/md0 /dev/hda1 etc and
mdadm -A /dev/md2 /dev/sda2 etc

but when I try to do mdadm -A /dev/md1 /dev/hde1 /dev/hdg1 /dev/hdi1 /dev/hdk1

it says:
mdadm:cannot open device /dev/hdi1: No such file or directory
mdadm: /dev/hdi1 has no superblock - assembly aborted

and sure enough hdi isn't listed when I do an fdisk -l and its not in fstab, hdk isn't their either, I think it just stops after one error, so it deson't complain about it too.

Why wouldn't knoppix see one of my other drives? When I boot into normal redhat it sees it just fine, and when I boot into rescue mode from the rhel install disc it sees it fine, just not it knoppix.

AH, I got it partially working! I found this thread: http://www.linuxquestions.org/questi...hreadid=199631

and the instructions on there did the trick.

Basically knoppix doesn't like it when there are drives past hdh, so you have to do some leg work.

First, cat /proc/partitions this comes up with all the drives, and sure enough hdi and hdk were on there.


Then I used mknod -m 666 /dev/hdi b 56 0 and
mknod -m 666 /dev/hdi1 b 56 1

I repeated this with hdk and then tried the mdadm -A command again and it worked!

I'll move onto the lvm stuff next, you'll see another post if it doesn't go smooth