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Diffstat (limited to 'Documentation/btrfs-map-logical.asciidoc')
| -rw-r--r-- | Documentation/btrfs-map-logical.asciidoc | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/Documentation/btrfs-map-logical.asciidoc b/Documentation/btrfs-map-logical.asciidoc new file mode 100644 index 00000000..a3d110cb --- /dev/null +++ b/Documentation/btrfs-map-logical.asciidoc @@ -0,0 +1,37 @@ +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 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) |