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)