SIMPLE SOLUTIONS

BTRFS-MAP-LOGICAL(8) - Linux man page online | Administration and privileged commands

Map btrfs logical extent to physical extent.

Chapter
02/16/2018
BTRFS-MAP-LOGICAL(8) Btrfs Manual 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 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)
Btrfs v4.15.1 02/16/2018 BTRFS-MAP-LOGICAL(8)
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