#UBUNTU DISK MAP PLUS#

Or rw), plus any additional options appropriate to the filesystem type (including performance-tuning options). This contains at least the type of mount ( ro Mount-options refer to filesystem related parameters, formatted as a comma-separated list.

dev/mapper/backupSSD /media/secure-ssd ext4 defaults 0 2 # Samsung 860 1TB EVO SSD path installed 17-02-2018 # mapper mount-point type mount-options dump fs_passno A 256 bit master key will equate to a LUKS header size of 1,052,672 Bytes See the cryptsetup FAQ Format Partitionĭo not omit this step - or the partition won’t mount. Salt: 39 68 d2 4e 04 51 a3 c2 c9 88 e8 71 a5 a9 0f d4ġ7 3f 88 0c 39 2c f5 22 35 e5 19 48 3c 1b 47 49Īmongst other interesting things, the output will show the size of the master key ( MK bits). The supported options are described below.Note that all four fields are mandatory and that a missing field will lead to unspecified behaviour.Ĭheck it using the luksDump command. At minimum, the field should contain either the string luksrespectively tcrypt or the cipher, hash and size options. The fourth field, options, describes the cryptsetup options associated with the encryption process. In this case, the options precheck, check, checkargs and triesmay be useful. If the key file is the string “none”, a passphrase will be read interactively from the console. dev/urandom), note however that LUKS requires a persistent key and therefore does not support random data keys. Note that the entire key file will be used as thepassphrase the passphrase must not be followed by a newline character. The third field, key file, describes the file to use as a key for decrypting the data of the source device. Instead of giving the source deviceexplicitly, the UUID is supported as well, using UUID=. The second field, source device, describes either the block special device or file that contains the encrypted data. A mapped device which encrypts/decrypts data to/from the source device will be created at /dev/mapper/target by cryptsetup. It must be a plain filename without any directory components. The first field, target, describes the mapped device name.

#UBUNTU DISK MAP FULL#

# UUID of partition in field 2 # Full path to keyfile in field 3īackupSSD UUID =4f942e15-ff00-4213-aab1-089448b17850 /root/.keyfiles/hdd-1.key luks,discard # /etc/crypttab # Mapping name in field 1. In this case you can see sdd is the target drive - the size type matches, and it is unmounted (as expected). Loop3 7:3 0 28.1M 1 loop /snap/telegram-latest/4

Ubuntu disk map