forked from Mirrors/btrfs-progs
34 lines
1.0 KiB
Groff
34 lines
1.0 KiB
Groff
.TH BTRFS-MAP-LOGICAL 8
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.SH NAME
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btrfs-map-logical \- map btrfs logical extent to physical extent
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.SH SYNOPSIS
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.B btrfs-map-logical [\fIoptions\fP] \fI<device>\fP
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.SH DESCRIPTION
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\fBbtrfs-map-logical\fP can be used to find out what the physical offsets are
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on the mirrors, the result is dumped into stdout in default.
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\fIOptions\fP
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.IP "\fB-l|--logical \fI<logical_num>\fP" 5
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Logical extent to map.
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.IP "\fB-c|--copy \fI<copy>\fP" 5
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Copy of the extent to read(usually 1 or 2).
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.IP "\fB-o|--output \fI<filename>\fP" 5
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Output file to hold the extent.
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.IP "\fB-b|--bytes \fI<bytes>\fP" 5
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Number of bytes to read.
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.SH EXIT CODE
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\fBbtrfs-map-logical\fP will return 0 if no error happened.
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If any problems happened, 1 will be returned.
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.SH AUTHOR
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Written by Shilong Wang and Wenruo Qu.
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.SH COPYRIGHT
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Copyright \(co 2013 FUJITSU LIMITED.
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License GPLv2: GNU GPL version 2 <http://gnu.org/licenses/gpl.html>.
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.br
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This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law.
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.SH SEE ALSO
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.BR mkfs.btrfs (8)
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