Frequently asked questions about LUKS encryption
This FAQ provides you with answers to common questions about LUKS encryption.
- How do I unmount and secure data?
- How do I mount or remount encrypted partition?
- How do I change passphrase (password) for LUKS-encrypted partition?
How do I unmount and secure data?
To unmount and secure LUKS-encrypted partition data run the following commands. In the example
below,
backup2 is the user given mapping name for the opened LUKS
partition.# umount /backup2
# cryptsetup luksClose backup2How do I mount or remount encrypted partition?
To mount or remount LUKS-encrypted partition run the following commands. In the example below,
backup2 is the user given mapping name for the opened LUKS
partition.# cryptsetup luksOpen /dev/xvdc backup2
# mount /dev/mapper/backup2 /backup2
# df -H
# mountHow do I change passphrase (password) for LUKS-encrypted partition?
To change the passphrase (or password) for LUKS-encrypted partition run the following
commands.
# cryptsetup luksDump /dev/xvdc
# cryptsetup luksAddKey /dev/xvdc
Enter any passphrase:
Enter new passphrase for key slot:
Verify passphrase: