| lh | 9ed821d | 2023-04-07 01:36:19 -0700 | [diff] [blame] | 1 | .\" -*- nroff -*- |
| 2 | .TH FILEFRAG 8 "@E2FSPROGS_MONTH@ @E2FSPROGS_YEAR@" "E2fsprogs version @E2FSPROGS_VERSION@" |
| 3 | .SH NAME |
| 4 | filefrag \- report on file fragmentation |
| 5 | .SH SYNOPSIS |
| 6 | .B filefrag |
| 7 | [ |
| 8 | .BI \-b blocksize |
| 9 | ] |
| 10 | [ |
| 11 | .B \-BeksvxX |
| 12 | ] |
| 13 | [ |
| 14 | .I files... |
| 15 | ] |
| 16 | .SH DESCRIPTION |
| 17 | .B filefrag |
| 18 | reports on how badly fragmented a particular file might be. It makes |
| 19 | allowances for indirect blocks for ext2 and ext3 filesystems, but can be |
| 20 | used on files for any filesystem. |
| 21 | .PP |
| 22 | The |
| 23 | .B filefrag |
| 24 | program initially attempts to get the |
| 25 | extent information using FIEMAP ioctl which is more efficient and faster. |
| 26 | If FIEMAP is not supported then filefrag will fall back to using FIBMAP. |
| 27 | .SH OPTIONS |
| 28 | .TP |
| 29 | .B \-B |
| 30 | Force the use of the older FIBMAP ioctl instead of the FIEMAP ioctl for |
| 31 | testing purposes. |
| 32 | .TP |
| 33 | .BI \-b blocksize |
| 34 | Use |
| 35 | .I blocksize |
| 36 | in bytes for output instead of the filesystem blocksize. |
| 37 | For compatibility with earlier versions of |
| 38 | .BR filefrag , |
| 39 | if |
| 40 | .I blocksize |
| 41 | is unspecified it defaults to 1024 bytes. |
| 42 | .TP |
| 43 | .B \-e |
| 44 | Print output in extent format, even for block-mapped files. |
| 45 | .TP |
| 46 | .BI \-k |
| 47 | Use 1024\-byte blocksize for output (identical to '\-b 1024'). |
| 48 | .TP |
| 49 | .B \-s |
| 50 | Sync the file before requesting the mapping. |
| 51 | .TP |
| 52 | .B \-v |
| 53 | Be verbose when checking for file fragmentation. |
| 54 | .TP |
| 55 | .B \-x |
| 56 | Display mapping of extended attributes. |
| 57 | .TP |
| 58 | .B \-X |
| 59 | Display extent block numbers in hexadecimal format. |
| 60 | .SH AUTHOR |
| 61 | .B filefrag |
| 62 | was written by Theodore Ts'o <tytso@mit.edu>. |