[SOLVED] How to mount encrypted, LVM volumes?

[giac0m0]

Hi there, thanks for posting the solution to your boggle.

I had a Fedora install with LVM and couldn't access the files until I used your instructions on my Jaunty 9.04 desktop with the LVM drive attached via usb.

Two things; firstly I couldn't depmod dm_mod - I got a module not found error although this did not impact my success.

FATAL: Module dm_mod not found.

Secondly to unmount the drive I had to use the -l switch on the umount command:

sudo umount -l /media/root

otherwise the unmount failed due to a process or user accessing it.

Thanks again!

[jerome1232]

It's been awhile since I wrote this thread but

dm_mod is for encryption, so if you were just using lvm and not encryption and didn't install luks then that's why dm_mod wasn't found. Since you weren't using luks encryption it worked anyways.

Happy lvm'ing!

[whitenight639]

Sorry to drag up old threads from the dead but I'm having a similar problem unmounting the drive;

[root@jaguar mapper]# ls -al /dev
brw-rw----. 1 root disk 8, 0 Aug 7 21:34 sda
brw-rw----. 1 root disk 8, 1 Aug 7 21:34 sda1
brw-rw----. 1 root disk 8, 2 Aug 7 22:19 sda2
brw-rw----. 1 root disk 8, 16 Aug 7 21:34 sdb
brw-rw----. 1 root disk 8, 17 Aug 7 21:34 sdb1
brw-rw----. 1 root disk 8, 18 Aug 7 21:34 sdb2
[root@jaguar mapper]# umount -f /dev/sda2
umount: /dev/sda2: not mounted

[root@jaguar mapper]# umount -f /dev/sda1
umount: /dev/sda1: not mounted

[root@jaguar mapper]# umount -f /dev/sda
umount: /dev/sda: not mounted

[root@jaguar mapper]# cryptsetup luksOpen /dev/sda2 oldsystem
Enter passphrase for /dev/sda2:
Cannot use device /dev/sda2 which is in use (already mapped or mounted).
[root@jaguar mapper]#

whats all that about is there something using the drive that I can kill off?

[wildmanne39]

If a post is older than a year or so and hasn't had a new reply in that time, instead of replying to it, create a new thread. In the software world, a lot can change in a very short time, and doing things this way makes it more likely that you will find the best information. You may link to the original discussion in the new thread if you think it may be helpful.