Rescue an encrypted LUKS LVM volume
First you need to Boot into a Live CD environment and open up a terminal window. (applications-->accessories--->terminal)
Install required packages using the following command
sudo apt-get install lvm2 cryptsetup
probe required module using the following command
sudo modprobe dm-crypt
setup the crypto module to recognise the partition
sudo cryptsetup luksOpen /dev/hda5 crypt1
Enter your passphrase. You should get the following message:
key slot 0 unlocked.
If not, something has gone wrong.
Scan for volume groups
sudo vgscan --mknodes
sudo vgchange -ay
REMEMBER the name of the volume group, as you will need it later.
Create a mount point
sudo mkdir /volume
mount the encrypted volume to the mountpoint you just created.
sudo mount /dev/paulb-desktop/root /volume
The volume is mounted, now you can chroot or whatever else you need to do. If you would like to open the gnome file manager for writing to it issue the following command:
sudo nautilus /volume
I’ve just installed Ubuntu 8.04 on a encrypted partition with lvm a few days ago and wondered how to do this, if something goes wrong.
Never worked with lvm before…
Thanks a lot,
I’ve just broke my fedora system and was unable to access my LUKS-LVM “/” partition untill I found you tutorial.
you make me very happy!
I have SATA(hda) hdd with Ubuntu 8.10 + lvm + encrypt
/dev/sda1 * 1 60770 488134993+ 83 Linux
/dev/sda2 60771 60801 249007+ 5 Extended
/dev/sda5 60771 60801 248976 83 Linux
On other Ubuntu 8.10
[email protected]:~$ sudo cryptsetup luksOpen /dev/sda5 crypt1
Command failed: Can not access device
wow, my encrypted volume is sda1, not sda5
and mount command like “sudo mount /dev/mapper/LABEL-root /media/MOUNTPOINT”
Unfortunately, I can’t get this to work from the live cd. Unknown command apt-get.
denali206, use aptitude instead of apt-get, it’s the same functionality.
Much appreciated. Without this I would have had to re-install fedora.
In my situation, I had an encrypted system and /home folder and lost video configuration. While I was never able to restore my video configuration. Despite the fact that I tried every related forum entry I could find. I finally decided to reinstall to my system partition leaving the others intact. During reinstall I opted to not mount my /home drive hoping to mount and reconnect it after re-install. In short is it possible to unlock and then remount a formerly encrypted /home volume? If so I have a question. I noticed after reinstall that even after mounting the “old” /home folder It was not able to access it. I found your forum and the above “how-to” When I used your how-to I noticed I was never able to access or unlock any volumes. I then noticed that the /home folder was not mounted. Does the encrypted volume need to be mounted at the time of the scan? Thanks in advance for your help.
I tried this and couldn’t get it to work. All attempts at entering password rejected. Have entered it every day for years.
sudo vgscan –mknodes
udo vgchange -ay
both returned “No volume groups found”
Have one volume group within a dm-crypt
Got it working now, Keying in the password I was hitting the right letters on the keyboard but the ‘normal’ system was a UK keyboard, the rescue system a US one so the displayed ( and entered ) passwords were differnet.