BTRFS-MAP-LOGICAL man page on Oracle

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BTRFS-MAP-LOGICAL(8)					  BTRFS-MAP-LOGICAL(8)

NAME
       btrfs-map-logical - map btrfs logical extent to physical extent

SYNOPSIS
       btrfs-map-logical [options] <device>

DESCRIPTION
       btrfs-map-logical can be used to find out what the physical offsets are
       on the mirrors, the result is dumped into stdout in default.

       Options

       -l|--logical <logical_num>
	    Logical extent to map.

       -c|--copy <copy>
	    Copy of the extent to read(usually 1 or 2).

       -o|--output <filename>
	    Output file to hold the extent.

       -b|--bytes <bytes>
	    Number of bytes to read.

EXIT CODE
       btrfs-map-logical will return 0 if no error happened.  If any  problems
       happened, 1 will be returned.

AUTHOR
       Written by Shilong Wang and Wenruo Qu.

COPYRIGHT
       Copyright  ©  2013  Fujitsu,  Inc.   License  GPLv2:  GNU GPL version 2
       <http://gnu.org/licenses/gpl.html>.
       This is free software: you are free  to	change	and  redistribute  it.
       There is NO WARRANTY, to the extent permitted by law.

SEE ALSO
       mkfs.btrfs(8)

							  BTRFS-MAP-LOGICAL(8)
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