This is a small how-to to add an (encrypted) disk to an LVM Volume Group (VG). In this example, we'll add /dev/sda
to an existing volume group called howto-vg
.
Encrypt the disk and open it:
cryptsetup luksFormat --type luks1 /dev/sda
cryptsetup open /dev/sda sda_crypt
Create the physical volume:
pvcreate /dev/mapper/sda_crypt
Make sure the volume group exists by running vgscan
. Alternatively, you can use vgdisplay
. Add the physical volume to the volume group:
vgextend howto-vg /dev/mapper/sda_crypt
And create the logical volume:
lvcreate -l 100%FREE howto-vg -n howto-volume
Create the filesystem on the logical volume:
mkfs.ext4 -m 1 /dev/howto-vg/howto-volume
Create the mount point so you can mount the volume:
mkdir -p /path/to/mount
You can now add the volume in /etc/fstab
:
/dev/mapper/howto--vg-howto--volume /path/to/mount ext4 defaults 0 2
Now reload systemd by running systemctl daemon-reload
.
Mount the disk by running mount /path/to/disk
. The following step isn't needed but cannot hurt either: reboot
. After the reboot, you are sure the disk is mounted in the correct place. Yay.
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