Linux creates a specified file size and implements the conversion from ext2 to ext3

Create a ext2 file of the specified size

Generate a 1G space of a specified size using DD

DD If=/dev/zero of=/home/foobar bs=1m count=1000 create 1G size space

Format created space (at this point the file type is ext2)

Mke2fs-vfm0/home/foobar

Create a table of contents

Mkdir/foobar

Mount the generated space to the specified directory

Mount-o loop/home/foobar/foobar/

Set file permissions

chmod 777/foobar

View disk space size and file type

Df-ht/foobar

Implementation of transitions from ext2 to ext3

Uninstall the mounted directory first

Umount/foobar

Converts the ext2 file type to ext3, specifying the file to convert

/sbin/tune2fs-j/home/foobar converts foobar ext2 format to ext3 format

Mount the generated space to the specified directory

Mount-o loop-text3/home/foobar/foobar/

View disk space size and file type

Df-ht/foobar

Create a ext3 file of the specified size

DD If=/dev/zero Of=/home/foobar bs=1m count=1000

Mkfs.ext3-vfm0/home/foobar

Mkdir/foobar

Mount-o loop/home/foobar/foobar/

chmod 777/foobar

Df-ht/foobar

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