BTRFS−MAP−LOGICAL
NAME
SYNOPSIS
DESCRIPTION
OPTIONS
EXIT STATUS
SEE ALSO
NAME
btrfs-map-logical − map btrfs logical extent to physical extent
SYNOPSIS
btrfs−map−logical
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 extent to map.
−c|−−copy
Copy of the extent to read(usually 1 or 2).
−o|−−output
Output file to hold the extent.
−b|−−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)