defrag.f2fs - relocate blocks in a given area to the specified region

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

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.

       defrag.f2fs - relocate blocks in a given area to the specified region

-sstartblockaddress
              Specify the starting block address.

       -lnumberofblocks
              Specify the number of blocks to move.

       -ttargetblockaddress
              Specify the destination block address.

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

       -ddebug-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 <jaegeuk@kernel.org>.

mkfs.f2fs(8),dump.f2fs(8),fsck.f2fs(8),resize.f2fs(8),sload.f2fs(8).DEFRAG.F2FS(8)

defrag.f2fs [ -sstartblockaddress ] [ -lnumberofblocks ] [ -ttargetblockaddress ] [ -idirection
       ] [ -ddebugging-level ] device