btrfs-map-logical(8) ==================== 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 into stdout in 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)