diff options
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/Makefile | 2 | ||||
| -rw-r--r-- | Documentation/btrfs-map-logical.txt | 49 |
2 files changed, 50 insertions, 1 deletions
diff --git a/Documentation/Makefile b/Documentation/Makefile index 9fdacb34..f8804516 100644 --- a/Documentation/Makefile +++ b/Documentation/Makefile @@ -7,7 +7,7 @@ MAN8_TXT += btrfs-convert.txt MAN8_TXT += btrfs-debug-tree.txt MAN8_TXT += btrfs-find-root.txt MAN8_TXT += btrfs-image.txt -#MAN8_TXT += btrfs-map-logical.txt +MAN8_TXT += btrfs-map-logical.txt #MAN8_TXT += btrfs-show-super.txt #MAN8_TXT += btrfstune.txt #MAN8_TXT += btrfs-zero-log.txt diff --git a/Documentation/btrfs-map-logical.txt b/Documentation/btrfs-map-logical.txt new file mode 100644 index 00000000..2a93fb05 --- /dev/null +++ b/Documentation/btrfs-map-logical.txt @@ -0,0 +1,49 @@ +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. + +AUTHOR +------ +Written by Shilong Wang and Wenruo Qu. + +COPYRIGHT +--------- +Copyright (C) 2013 FUJITSU LIMITED. + +License GPLv2: GNU GPL version 2 <http://gnu.org/licenses/gpl.html>. + +This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. + +SEE ALSO +-------- +`mkfs.btrfs`(8) |