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other versions
- jessie 3.17-1.1
- jessie-backports 4.7.3-1~bpo8+1
- stretch 4.7.3-1
- testing 4.20.1-2
- stretch-backports 4.17-1~bpo9+1+b1
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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 into stdout in 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)11/22/2014 | Btrfs v3.17 |