Hi all,

Wonder if anyone can help me out here.

I need to examine a hard drive that came from another system running Ubunut Server (not sure what version). I know the drive has LVM on it, so as far as I understand that means the drive will be treated as EXT4 for mounting. I can't boot from the actual disk, but I have used a IDE to USB connector to make a binary copy of the drive, which I've mounted as a loopback device. However, when I try to mount the loopback device properly, I get this:

root@~je:/# mount -o ro -t ext4 /dev/loop0 /mnt
mount: wrong fs type, bad option, bad superblock on /dev/loop0,
missing codepage or helper program, or other error
In some cases useful info is found in syslog - try
dmesg | tail or so

I tried using -t ext4dev too, but that just gives an unknown filesystem error.

The file I've got mounting in /dev/loop0 is a .dd file, created by imaging the drive using dcfldd on the server drive while it was mounted (as /dev/sdb).

System I'm working on is running Ubuntu 9.10.

All I need is to be able to mount the server drive so I can traverse the file directories, there's a few things I need to check on it. If needed I can dispense with the whole loopback setup and just directly connect the server hard drive again using the IDE to USB cable, but I'd rather not do that; it's imperative that the drive doesn't get altered, or at least as little as possible.

Cheers in advance.

http://www.linuxquestions.org/questi...4/#post2407972
why? may be any fs over lvm.

I could easily be wrong Going off what I was told by someone else who had looked at the drive a while ago.

There is no relationship between LVM and ext4. The volume may be formatted as ext4. LVM can not be mounted as a regular partition.

I found a couple of web pages that will provide some insight on how to mount an LVM partition from an image.
http://blog.ncsa.uiuc.edu/aashish/20...vm-disk-image/
http://www.thegibson.org/blog/archives/467

The first link looks excellent, will give that a go. Thanks all!

Got it working. Simple problem, the offset I was using the for the loopback mount was screwed up, rookie error . Thanks again.