Create virtual device from file and use it in LVM

gistfile1.sh

fallocate -l 256M /image.img          # create file to store a filesystem
losetup /dev/loop0                    # check if loop0 is free to use, if not continue with loop1, ...
losetup /dev/loop0 /image.img         # create device using file
pvcreate /dev/loop0                   # create lvm physical volume
vgcreate lvmstorage /dev/loop0        # create volume group "lvmstorage" using device
lvcreate -L 128M -n lv1 lvmstorage    # create logical volume "lv1" with size 128M
mkfs.ext4 /dev/lvmstorage/lv1         # create file system
e2label /dev/lvmstorage/lv1 LV1       # set label "LV1" for device
mkdir /mnt/stuff
mount /dev/lvmstorage/lv1 /mnt/stuff  # mount device
df -hT                                # check result

Hello, you can change 2 and 3 line to losetup -fP /image.img
If you want find loop with your file, you can run some like this losetup -a | grep image.img

Do you need the "loop" module loaded ?

@Et7f3 I'm really sorry, but I completely forgot what I meant))
This was the beginning of my career in information technology, and I was stupid)
Anyway, thanks for this instruction, it was really helpful!