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 extentSYNOPSIS
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)| This manual | Reference | Other manuals |
|---|---|---|
| btrfs-map-logical(8) | referred by | |
| refer to | mkfs.btrfs(8) |