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https://gitee.com/openharmony/third_party_f2fs-tools
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75 lines
1.5 KiB
Groff
75 lines
1.5 KiB
Groff
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.\" Copyright (c) 2015 Jaegeuk Kim <jaegeuk@kernel.org>
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.\"
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.TH DEFRAG.F2FS 8
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.SH NAME
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defrag.f2fs \- relocate blocks in a given area to the specified region
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.SH SYNOPSIS
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.B defrag.f2fs
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[
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.B \-s
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.I start block address
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]
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[
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.B \-l
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.I number of blocks
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]
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[
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.B \-t
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.I target block address
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]
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[
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.B \-i
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.I direction
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]
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[
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.B \-d
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.I debugging-level
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]
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.I device
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.SH DESCRIPTION
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.B defrag.f2fs
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is used to move specified number of blocks starting from a given block address
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to the target block address with a direction.
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\fIdevice\fP is the special file corresponding to the device (e.g.
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\fI/dev/sdXX\fP).
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For example,
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# defrag.f2fs -s 0x4000 -l 0x100 -t 0x10000 -i /dev/sdb1
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This moves blocks between 0x4000 and 0x4100 to the left-hand area of 0x10000.
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.PP
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The exit code returned by
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.B defrag.f2fs
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is 0 on success and -1 on failure.
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.SH OPTIONS
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.TP
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.BI \-s " start block address"
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Specify the starting block address.
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.TP
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.BI \-l " number of blocks"
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Specifiy the number of blocks to move.
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.TP
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.BI \-t " target block address"
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Specify the destination block address.
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.TP
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.BI \-i " direction"
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Set the direction to left. If it is not set, the direction becomes right
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by default.
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.TP
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.BI \-d " debug-level"
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Specify the level of debugging options.
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The default number is 0, which shows basic debugging messages.
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.TP
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.SH AUTHOR
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This version of
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.B defrag.f2fs
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has been written by Jaegeuk Kim <jaegeuk@kernel.org>.
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.SH AVAILABILITY
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.B defrag.f2fs
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is available from git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs-tools.git.
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.SH SEE ALSO
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.BR mkfs.f2fs(8),
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.BR dump.f2fs(8),
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.BR fsck.f2fs(8).
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