SYNOPSIS

defrag.f2fs [ -s start block address ] [ -l number of blocks ] [ -t target block address ] [ -i direction ] [ -d debugging-level ] device

DESCRIPTION

defrag.f2fs is used to move specified number of blocks starting from a given block address to the target block address with a direction. device is the special file corresponding to the device (e.g. /dev/sdXX).

For example, # defrag.f2fs -s 0x4000 -l 0x100 -t 0x10000 -i /dev/sdb1

This moves blocks between 0x4000 and 0x4100 to the left-hand area of 0x10000.

The exit code returned by defrag.f2fs is 0 on success and -1 on failure.

OPTIONS

-s start block address

Specify the starting block address.

-l number of blocks

Specifiy the number of blocks to move.

-t target block address

Specify the destination block address.

-i direction

Set the direction to left. If it is not set, the direction becomes right by default.

-d debug-level

Specify the level of debugging options. The default number is 0, which shows basic debugging messages.

AUTHOR

This version of defrag.f2fs has been written by Jaegeuk Kim <[email protected]>.

AVAILABILITY

defrag.f2fs is available from git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs-tools.git.