# lsblk
NAME                  MAJ:MIN RM   SIZE RO TYPE  MOUNTPOINTS
loop0                   7:0    0 862.8M  1 loop
loop1                   7:1    0   4.3G  1 loop  /run/rootfsbase
sda                     8:0    1  14.3G  0 disk
├─sda1                  8:1    1  14.3G  0 part
│ └─ventoy            254:0    0   984M  1 dm    /run/initramfs/live
└─sda2                  8:2    1    32M  0 part
nvme0n1               259:0    0 476.9G  0 disk
├─nvme0n1p1           259:1    0     1G  0 part
└─nvme0n1p2           259:2    0 475.9G  0 part
  └─main_block        254:1    0 475.9G  0 crypt
    ├─main_block-root 254:2    0    80G  0 lvm   /mnt
    ├─main_block-swap 254:3    0    24G  0 lvm
    └─main_block-home 254:4    0 371.9G  0 lvm
# ls /dev/mapper
control  main_block  main_block-home  main_block-root  main_block-swap	ventoy
# ls /dev/mapper/main_block
/dev/mapper/main_block
# cat /mnt/etc/fstab
#
# See fstab(5).
#
# <file system>	<dir>	<type>	<options>		<dump>	<pass>
tmpfs		/tmp	tmpfs	defaults,nosuid,nodev   0       0
/dev/nvme0n1p1	/boot/efi	vfat	defaults	0	0
/dev/main_block/root	/	btrfs	defaults	0	0
/dev/main_block/home	/	btrfs	defaults	0	0
/dev/main_block/swap	swap	swap	defaults	0	0