NAME

ddrescuelog - tool for ddrescue mapfiles

SYNOPSIS

ddrescuelog [options] mapfile

DESCRIPTION

GNU ddrescuelog is a tool that manipulates ddrescue mapfiles, shows mapfile contents, converts mapfiles to/from other formats, compares mapfiles, tests rescue status, and can delete a mapfile if the rescue is done. Ddrescuelog operations can be restricted to one or several parts of the mapfile if the domain setting options are used.

Use a hyphen '-' as mapfile to read the mapfile from standard input (also in the options taking a mapfile argument) or to write the mapfile created by '--create-mapfile' to standard output.

NOTE: In versions of ddrescue prior to 1.20 the mapfile was called 'logfile'. The format is the same; only the name has changed.

OPTIONS

-h, --help: display this help and exit
-V, --version: output version information and exit
-a, --change-types=<ot>,<nt>: change the block types of mapfile
-A, --annotate-mapfile: add comments with human-readable pos/sizes
-b, --block-size=<bytes>: block (sector) size in bytes [default 512]
-B, --binary-prefixes: show binary multipliers in numbers [SI]
-c, --create-mapfile[=<tt>]: create mapfile from list of blocks [+-]
-C, --complete-mapfile[=<t>]: complete mapfile adding blocks of type t [?]
-d, --delete-if-done: delete the mapfile if rescue is finished
-D, --done-status: return 0 if rescue is finished
-f, --force: overwrite existing output files
-F, --format=<name>: format for -c and -l (list, bitmap-[bl]e)
-i, --input-position=<bytes>: starting position of rescue domain [0]
-l, --list-blocks=<types>: print block numbers of given types (?*/-+)
-L, --loose-domain: accept unordered domain mapfile with gaps
-m, --domain-mapfile=<file>: restrict domain to finished blocks in <file>
-n, --invert-mapfile: invert block types (finished <--> others)
-o, --output-position=<bytes>: starting position in output file [ipos]
-p, --compare-mapfile=<file>: compare block types in domain of both files
-P, --compare-as-domain=<file>: like -p but compare finished blocks only
-q, --quiet: suppress all messages
-s, --size=<bytes>: maximum size of rescue domain to be processed
-t, --show-status: show a summary of mapfile contents
-v, --verbose: be verbose (a 2nd -v gives more)
-x, --xor-mapfile=<file>: XOR the finished blocks in file with mapfile
-y, --and-mapfile=<file>: AND the finished blocks in file with mapfile
-z, --or-mapfile=<file>: OR the finished blocks in file with mapfile
--shift: shift all block positions by (opos - ipos)

Numbers may be in decimal, hexadecimal, or octal, and may be followed by a multiplier: s = sectors, k = 1000, Ki = 1024, M = 10^6, Mi = 2^20, etc...

Exit status: 0 for a normal exit, 1 for environmental problems (file not found, invalid command-line options, I/O errors, etc), 2 to indicate a corrupt or invalid input file, 3 for an internal consistency error (e.g., bug) which caused ddrescuelog to panic.

REPORTING BUGS

Report bugs to bug-ddrescue@gnu.org
Ddrescue home page: http://www.gnu.org/software/ddrescue/ddrescue.html
General help using GNU software: http://www.gnu.org/gethelp

COPYRIGHT

Copyright © 2024 Antonio Diaz Diaz. License GPLv2+: GNU GPL version 2 or later 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.