Hello lovely debianizers,
My Debian 10 machine has two physical disks, sda and sdb. The
(encrypted) root filesystem is on sdb, meanwhile I’ve used
fstab/crypttab to mount an (encrypted) partition on sda to
/mnt/data01-hdd, where I’ve stored some stuff:
user@hostname:/$ ls -gh /mnt/data01-hdd/
total 4.0K
drwxr-xr-x 5 1007 4.0K Jan 1 23:02 backups
However, when i do
user@hostname:/$ sudo umount /mnt/data01-hdd
umount complains thus:
umount: /mnt/data01-hdd: not mounted.
How can I unmount the partition?
lsblk -f doesn’t show the partition as mounted, which is something that
I don’t understand:
user@hostname:~$ sudo lsblk -f
NAME FSTYPE LABEL UUID
FSAVAIL FSUSE% MOUNTPOINT
sda
└─sda1 crypto_LUKS
400a161c-0654-4596-9b1c-3900ef504cb5
└─sda1_crypt LVM2_member
6I1ePw-7IuN-DQqN-02rs-vDgM-e3Nh-DUkfK0
└─1Terabyte01--vg-data01 ext4
900e8322-5af6-4ecd-827d-fae54f21e4f3
sdb
├─sdb1 ext2
0791c90e-8567-48c9-90a8-67c7c6619359 359.1M 18% /boot
├─sdb2
└─sdb5 crypto_LUKS
2b5a5240-9d34-42af-958a-a2a4509382d8
└─sdb5_crypt LVM2_member
q9xOdL-yo0s-CDK9-eYiV-0uya-sX7o-WIvPZH
├─debian--vg-root ext4
4248fdef-e86c-456a-8fc7-2a4ec5b1b0df 195.7G 52% /
└─debian--vg-swap_1 swap
5cc35d37-c746-4bc5-9d00-f437061f6cc8 [SWAP]
The configuration files:
user@hostname:/$ cat /etc/fstab
# /etc/fstab: static file system information.
# <file system> <mount point> <type>
<options> <dump> <pass>
/dev/mapper/debian--vg-root / ext4
errors=remount-ro 0 1
# /boot was on /dev/sdb1 during installation
UUID=0791c90e-8567-48c9-90a8-67c7c6619359 /boot ext2
defaults 0 2
/dev/mapper/debian--vg-swap_1 none swap sw
0 0
# 1000gb hdd via its LVM, cf. also /etc/crypttab
#/dev/mapper/1Terabyte01--vg-data01 /mnt/data01-hdd ext4
default
user@hostname:/$ cat /etc/crypttab
# sdb5 - debian 10 / yunohost on 500Gb HDD
# Tell cryptsetup to create the volume sdb5_crypt from /dev/sdb5
(identified
# by its UUID). Don't use a key file. Since this is the root device, it
will
# automatically be processed during the initramfs stage of boot (making
it
# accessible to dropbear).
#
sdb5_crypt UUID=2b5a5240-9d34-42af-958a-a2a4509382d8 none luks,discard
# sda1 - data on 1000Gb HDD
# Tell cryptsetup to create the volume sda1_crypt from /dev/sda1
(identified
# by its UUID) using the sda1.luks key. Since this is not a root device,
we
# explicitly require that the device be processed during the initramfs
stage.
#
sda1_crypt UUID=400a161c-0654-4596-9b1c-3900ef504cb5 /etc/keys/sda1.luks
luks,initramfs
I’d much apreciate your guidance!
Thyme Harp
