table of contents
| 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¶
- -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¶
| August 15, 2024 | 6.10.1 |