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62 lines
1.4 KiB
62 lines
1.4 KiB
.\" -*- nroff -*- |
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.TH FILEFRAG 8 "@E2FSPROGS_MONTH@ @E2FSPROGS_YEAR@" "E2fsprogs version @E2FSPROGS_VERSION@" |
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.SH NAME |
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filefrag \- report on file fragmentation |
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.SH SYNOPSIS |
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.B filefrag |
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[ |
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.BI \-b blocksize |
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] |
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[ |
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.B \-BeksvxX |
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] |
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[ |
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.I files... |
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] |
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.SH DESCRIPTION |
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.B filefrag |
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reports on how badly fragmented a particular file might be. It makes |
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allowances for indirect blocks for ext2 and ext3 filesystems, but can be |
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used on files for any filesystem. |
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.PP |
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The |
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.B filefrag |
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program initially attempts to get the |
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extent information using FIEMAP ioctl which is more efficient and faster. |
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If FIEMAP is not supported then filefrag will fall back to using FIBMAP. |
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.SH OPTIONS |
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.TP |
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.B \-B |
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Force the use of the older FIBMAP ioctl instead of the FIEMAP ioctl for |
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testing purposes. |
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.TP |
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.BI \-b blocksize |
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Use |
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.I blocksize |
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in bytes for output instead of the filesystem blocksize. |
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For compatibility with earlier versions of |
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.BR filefrag , |
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if |
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.I blocksize |
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is unspecified it defaults to 1024 bytes. |
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.TP |
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.B \-e |
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Print output in extent format, even for block-mapped files. |
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.TP |
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.BI \-k |
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Use 1024\-byte blocksize for output (identical to '\-b 1024'). |
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.TP |
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.B \-s |
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Sync the file before requesting the mapping. |
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.TP |
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.B \-v |
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Be verbose when checking for file fragmentation. |
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.TP |
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.B \-x |
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Display mapping of extended attributes. |
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.TP |
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.B \-X |
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Display extent block numbers in hexadecimal format. |
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.SH AUTHOR |
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.B filefrag |
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was written by Theodore Ts'o <tytso@mit.edu>.
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