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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

-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)

Copyright

2022