21. JANUAR 2019
Menu
Welches Device steckt hinter einer verschlüsselten Partition?
Im folgenden Output sieht man das /vol/backup mit dem Device /dev/mapper/backup verbunden ist. Doch welches Device steckt hinter /dev/mapper/backup?
blkid -o list #+BEGIN_EXAMPLE device fs_type label mount point UUID ----------------------------------------------------------------------------------------------------------------------- /dev/sdb2 linux_raid_member gnome:0 (in use) 9838148e-d0bf-4a02-1270-55460066df3e /dev/sdb3 linux_raid_member gnome:md1 (in use) 1b143b98-bb5f-4db1-e5f2-7f39d988a626 /dev/sda2 linux_raid_member gnome:0 (in use) 9838148e-d0bf-4a02-1270-55460066df3e /dev/sda3 linux_raid_member gnome:md1 (in use) 1b143b98-bb5f-4db1-e5f2-7f39d988a626 /dev/md0 LVM2_member (in use) Yp7kRn-gfu9-U1VI-Zysx-ZSd5-gILk-UXM0gq /dev/md1 swap [SWAP] 8aabb094-b174-41e0-91b9-8005b09d047f /dev/sdc1 ext4 (not mounted) 5b20a444-acd8-4b22-986b-b10029caeb31 /dev/sdc2 crypto_LUKS (in use) 04391c97-9fdd-4958-8872-caef8f596de7 /dev/sdc3 ext4 (not mounted) 04ef4b48-1d6e-4391-8a7e-20536e197d95 /dev/mapper/all-sys ext4 / 740ca15e-df4f-4233-8f27-3ab45434b585 /dev/mapper/all-usr ext4 /usr 52b729b2-8c83-497e-baa1-0b1a1a8f7454 /dev/mapper/all-local ext4 /usr/local 0b377ea8-472b-4445-a228-988d9605dae7 /dev/mapper/all-var ext4 /var d2b433ab-1d8f-46e5-a03b-613fb7adfbaa /dev/mapper/all-tmp ext4 /tmp ec737374-b94e-48fb-b416-6cbed4d8ac81 /dev/mapper/all-home ext4 /home a9c1361c-d289-47c5-99a8-8586a580deed /dev/mapper/all-vol ext4 /vol d4494dc1-4b62-4ad7-949a-36c444aeae6b /dev/mapper/all-aw_enc crypto_LUKS (in use) 26ef333f-4ca0-4bd0-bfbe-37c4e01e85b1 /dev/mapper/aw ext3 /home/aw 4e6723e1-780d-436f-8d80-b6c6cc340477 /dev/mapper/backup ext4 /vol/backup e4e009f8-493b-4cdc-beb9-e76d7b3211b4 /dev/sdb1 (not mounted) /dev/sda1 (not mounted)
Dies kann man mittels des Befehl dmsetup erfragen:
root@gnome:~# dmsetup -v table backup Name: backup State: ACTIVE Read Ahead: 256 Tables present: LIVE Open count: 1 Event number: 0 Major, minor: 253, 9 Number of targets: 1 UUID: CRYPT-LUKS1-04391c979fdd49588872caef8f596de7-backup 0 4294963200 crypt aes-xts-plain 0000000000000000000000000000000000000000000000000000000000000000 0 8:34 4096
In der letzten Zeile sieht man das es sich um ein verschlüsseltes Device handelt welches die Device-Number 8:34 verwendet.
Ein einfacher ls zeigt dann das physikalische Device für die Backup-Partition:
root@gnome:~# ls -la /dev/sd* brw-rw---- 1 root disk 8, 0 Jan 20 10:30 /dev/sda brw-rw---- 1 root disk 8, 1 Jan 20 10:30 /dev/sda1 brw-rw---- 1 root disk 8, 2 Jan 20 10:30 /dev/sda2 brw-rw---- 1 root disk 8, 3 Jan 20 10:30 /dev/sda3 brw-rw---- 1 root disk 8, 16 Jan 20 10:30 /dev/sdb brw-rw---- 1 root disk 8, 17 Jan 20 10:30 /dev/sdb1 brw-rw---- 1 root disk 8, 18 Jan 20 10:30 /dev/sdb2 brw-rw---- 1 root disk 8, 19 Jan 20 10:30 /dev/sdb3 brw-rw---- 1 root disk 8, 32 Jan 20 10:30 /dev/sdc brw-rw---- 1 root disk 8, 33 Jan 20 10:30 /dev/sdc1 brw-rw---- 1 root disk 8, 34 Jan 20 10:35 /dev/sdc2 brw-rw---- 1 root disk 8, 35 Jan 20 10:30 /dev/sdc3
Keywords: linux
Dokumenten-ID: kb/0f1468ae-3ed4-429b-85da-0186ed22c7f6