filefrag(8) - report on file fragmentation

[giantpanda]

FILEFRAG(8)				 System Manager's Manual			      FILEFRAG(8)



NAME
       filefrag - report on file fragmentation

SYNOPSIS
       filefrag [ -bblocksize ] [ -BeksvxX ] [ files...	 ]

DESCRIPTION
       filefrag	 reports  on  how  badly  fragmented a particular file might be.  It makes allowances for
       indirect blocks for ext2 and ext3 filesystems, but can be used on files for any filesystem.

       The filefrag program initially attempts to get the extent information using FIEMAP ioctl which  is
       more  efficient	and  faster.   If  FIEMAP  is not supported then filefrag will fall back to using
       FIBMAP.

OPTIONS
       -B     Force the use of the older FIBMAP ioctl instead of the FIEMAP ioctl for testing purposes.

       -bblocksize
	      Use blocksize in bytes for output instead of the filesystem blocksize.   For  compatibility
	      with earlier versions of filefrag, if blocksize is unspecified it defaults to 1024 bytes.

       -e     Print output in extent format, even for block-mapped files.

       -k     Use 1024-byte blocksize for output (identical to '-b 1024').

       -s     Sync the file before requesting the mapping.

       -v     Be verbose when checking for file fragmentation.

       -x     Display mapping of extended attributes.

       -X     Display extent block numbers in hexadecimal format.

AUTHOR
       filefrag was written by Theodore Ts'o <[email protected]>.



E2fsprogs version 1.42.9		      December 2013				      FILEFRAG(8)