Manpages - btrfs-map-logical.8

Table of Contents

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 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

*mkfs.btrfs*(8)

Author: dt

Created: 2022-02-20 Sun 09:54