Using files to create a file system under a Linux system

Using files to create file systems under a Linux system, the small partners may have a bit of a clue about what it means at first blush.

In fact, the use of files to create a file system is still quite practical value

First we do some testing, when we do not want to use the actual disk partition, we can use the file to create a file system, and then do some tests on it;

Secondly, we write the data in the file system created using the file, if necessary, we can copy the file away, to achieve a convenient migration of data, and the data on the partition on the disk we want to copy away is more troublesome.

Needless to say, the following is to do a small experiment, to demonstrate the next step;

First we create a partfile file under the/testdir test directory

Fill the file with 500M size using the dd if=/dev/zero of=/testdir/partfile bs=1m count=500 command

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Then use mkfs.ext4/testdir/partfile to format the Partfile file

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Mkdir/mnt/partfile Creating a mount point

mount/testdir/partfile/mnt/partfile/-O loop mount the/testdir/partfile to the/mnt/partfile directory

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viewing mount conditions

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In order to be able to automatically mount the boot, we need to modify the/etc/fstab configuration file

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Using files to create a file system under a Linux system