Linux Loopback Use

Sometimes a standalone block device is required, and loopback is a convenient option to create the following ways

DD If=/dev/zero of=./loopback_file bs=1m count=1000losetup/dev/loop0./loopback_file

First set up a file of the specified size as the actual storage space, and then associate it with/DEV/LOOP0, the loop device seems to have a number of restrictions

You can create a file system on it after the creation is complete, etc.

When you need to remove, first umount the file system mounted with the loopback device, and then

Losetup-d/dev/loop0

If the data does not need to be able to delete the Loopback_file file