[Lzip-bug] Lziprecover 1.21-rc1 released

[Antonio Diaz Diaz]

Lziprecover 1.21-rc1 is ready for testing here
http://download.savannah.gnu.org/releases/lzip/lziprecover/lziprecover-1.21-rc1.tar.lz
http://download.savannah.gnu.org/releases/lzip/lziprecover/lziprecover-1.21-rc1.tar.gz

The sha256sums are:
a93e37532f2428d6b4e1d8ca65d07dbb921e3f4511ed78a5114be50e1c7aeff4 
lziprecover-1.21-rc1.tar.lz
142cd920f8f504ca89def81958679dc36a420e4c8d9c2c14d8b738a009556f46 
lziprecover-1.21-rc1.tar.gz

Please, test it and report any bugs you find.

Lziprecover is a data recovery tool and decompressor for files in the 
lzip compressed data format (.lz). Lziprecover is able to repair 
slightly damaged files, produce a correct file by merging the good parts 
of two or more damaged copies, extract data from damaged files, 
decompress files and test integrity of files.

Lziprecover can remove the damaged members from multimember files, for 
example multimember tar.lz archives.

Lziprecover provides random access to the data in multimember files; it 
only decompresses the members containing the desired data.

Lziprecover facilitates the management of metadata stored as trailing 
data in lzip files.

Lziprecover is not a replacement for regular backups, but a last line of 
defense for the case where the backups are also damaged.

Lziprecover is able to recover or decompress files produced by any of 
the compressors in the lzip family; lzip, plzip, minilzip/lzlib, clzip 
and pdlzip.

The lzip file format is designed for data sharing and long-term 
archiving, taking into account both data integrity and decoder availability.

A nice feature of the lzip format is that a corrupt byte is easier to 
repair the nearer it is from the beginning of the file. Therefore, with 
the help of lziprecover, losing an entire archive just because of a 
corrupt byte near the beginning is a thing of the past.

If the cause of file corruption is damaged media, the combination GNU 
ddrescue[1] + lziprecover is the best option for recovering data from 
multiple damaged copies.

The homepage is at http://www.nongnu.org/lzip/lziprecover.html


Changes in this version:

  * The options '--dump', '--remove' and '--strip' have been added, 
mainly as support for the tarlz archive format:
http://www.nongnu.org/lzip/tarlz.html
These options replace '--dump-tdata', '--remove-tdata' and 
'--strip-tdata', which are now aliases and will be removed in version 1.22.
These options also replace the options '--dump-damaged', 
'--remove-damaged', and '--strip-damaged' added in version 1.21-pre1.

  '--dump=[<member_list>][:damaged][:tdata]' dumps the members listed,
  the damaged members (if any), or the trailing data (if any) of one or
  more regular multimember files to standard output.

  '--remove=[<member_list>][:damaged][:tdata]' removes the members
  listed, the damaged members (if any), or the trailing data (if any)
  from regular multimember files in place.

  '--strip=[<member_list>][:damaged][:tdata]' copies one or more regular
  multimember files to standard output, stripping the members listed,
  the damaged members (if any), or the trailing data (if any) from each
  file.

  * '--ignore-errors' now makes '--list' show gaps between members, 
ignoring format errors.

  * Errors are now also checked when closing the input file in 
decompression mode.

  * Some diagnostic messages have been improved.

  * '\n' is now printed instead of '\r' when showing progress of merge 
or repair if stdout is not a terminal.

  * The new chapter 'Tarlz', explaining the ways in which lziprecover 
can recover and process multimember tar.lz archives, has been added to 
the manual.

  * The configure script now accepts appending options to CXXFLAGS 
using the syntax 'CXXFLAGS+=OPTIONS'.

  * It has been documented in INSTALL the use of
    CXXFLAGS+='-D __USE_MINGW_ANSI_STDIO' when compiling on MinGW.


[1] http://www.gnu.org/software/ddrescue/ddrescue.html


Regards,
Antonio Diaz, lziprecover author and maintainer.
Software and Catalan political prisoners just want to be free.
--
If you are distributing software in xz format, please consider using 
lzip instead. See http://www.nongnu.org/lzip/lzip_benchmark.html#xz1 and 
http://www.nongnu.org/lzip/xz_inadequate.html