List All Cryptsetup Encrypted Partitions

By Graphical Representations

The very basic command would be:

$ lsblk --fs

This command will list all the devices and partitions, something like the following:

loop30         squashf                                              /snap/shellc

loop31         squashf                                              /snap/shellc

loop32         squashf                                              /snap/atom/2

sda                                                                 

├─sda1         ext2          <-UUID->-UUID-UUID-UUID-<---UUID--->   /boot

└─sda5         crypto_       <-UUID->-UUID-UUID-UUID-<---UUID--->  

  └─sda5_crypt LVM2_me       <-UUID->-UUID-UUID-UUID-<---UUID---> 

    ├─hostname--vg-root

    │          ext4          <-UUID->-UUID-UUID-UUID-<---UUID--->   /

    └─hostname--vg-swap_1

               swap          <-UUID->-UUID-UUID-UUID-<---UUID--->   [SWAP]

You're highly interested with the partition with the label "crypto_LUKS" or "crypto_" (the latter is due to the display spacing cutoff). Those with these labels signifies that partition is encrypted with LUKS.

If there is any decrypted / open LUKS partition, it has a child directory. In this case, you want to look for sda5_crypt partition name. Depending on what is the partition manager inside the encrypted volumes, you'll see all the listed partition insides.

If you just want to list only the encrypted partition, pipe it with grep crypto_LUKS. This will give you the list of encrypted partitions, regardless it is open or otherwise.

$ lsblk --fs | grep crypto_LUKS

└─sda5                             crypto_LUKS       <-UUID->-UUID-UUID-UUID-<---UUID--->

That's all about listing all encrypted partitions in an operating system.