Provided by: f2fs-tools_1.6.1-1_amd64
defrag.f2fs - relocate blocks in a given area to the specified region
defrag.f2fs [ -s start block address ] [ -l number of blocks ] [ -t target block address ] [ -i direction ] [ -d debugging-level ] device
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.
-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@example.com>.
defrag.f2fs is available from git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs- tools.git.
mkfs.f2fs(8), dump.f2fs(8), fsck.f2fs(8). DEFRAG.F2FS(8)