Posts tagged cryptsetup

Linux: mount LUKS / encrypted lvm btrfs subvolume partition
posted on 2016-03-13 20:37:55

When fixing more complex linux installations, you may come across LUKS partitions. Here is the workflow for a luks + lvm + btrfs setup:

# first identify your partition
lsblk -f

# open the encrypted container
# tabbing helps, if you tend to forget commands
cryptsetup luksOpen /dev/sdX1 my_encrypted_partition
# now after you entered the password, it should pop up under /dev/mapper/my_encrypted_partition

# activate all the volume groups
vgchange -aay

# create your mount destinations
mkdir /mnt/asdf
mkdir /mnt/qwer

# mount the lvm partitions, so you can work with them
# VGname = your LVM volume group
# LVname = your LVM logical volume
# SVname = your btrfs subvolume name
mount /dev/mapper/VGname/LVname /mnt/asdf
mount /dev/mapper/VGname/LVname /mnt/qwer -o subvol=@SVname

That should be all you need to fix things, in case you need it. If it is useful to have both LVM and btrfs, may be doubted. btrfs does handle volume management by itself, too.

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