btrfs-progs/Documentation/btrfs-map-logical.rst
Sidong Yang 2d039cc815 btrfs-progs: docs: add cross reference for manualpages
RST format provides cross reference function that users can navigate
manual pages click. This patch is written by macro that replaces old
references to doc role in RST format.

Issue: #495
Signed-off-by: Sidong Yang <realwakka@gmail.com>
Signed-off-by: David Sterba <dsterba@suse.com>
2022-10-11 09:08:08 +02:00

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btrfs-map-logical(8)
====================
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 to stdout by default.
Mainly used for debug purpose.
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 STATUS
-----------
**btrfs-map-logical** will return 0 if no error happened.
If any problems happened, 1 will be returned.
SEE ALSO
--------
:doc:`mkfs.btrfs(8)<mkfs.btrfs>`