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BTRFS-MAP-LOGICAL(8) BTRFS 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

Logical extent to map.
Copy of the extent to read(usually 1 or 2).
Output file to hold the extent.
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)

April 30, 2023 6.2