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[Lzip-bug] Lziprecover 1.22-pre1 released

From: Antonio Diaz Diaz
Subject: [Lzip-bug] Lziprecover 1.22-pre1 released
Date: Mon, 08 Jul 2019 11:30:50 +0200
User-agent: Mozilla/5.0 (X11; U; Linux i586; en-US; rv: Gecko/20110420 SeaMonkey/2.0.14

Lziprecover 1.22-pre1 is ready for testing here

The sha256sums are:
4e08cbd99e790f63c726681a5b4bf76477c0cc370db26cd3c02ba96bd7d10bc4 lziprecover-1.22-pre1.tar.lz d0b6bda435b3322a902d45936136676500860e10043f1ba4cb4fc1b2ce15a980 lziprecover-1.22-pre1.tar.gz

This release introduces a new recovery method. 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, reproduce a zeroed sector using a reference file, 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.

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 damaged lzip files.

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

Changes in this version:

* The option '-u, --reproduce', which can recover a zeroed sector in a lzip file, has been added. For it to work, two things are required: the same version of lzip that created the file, and a reference file containing the uncompressed data corresponding to the missing compressed data of the zeroed sector, plus some context data before and after them. (A zeroed sector may be caused by the incomplete recovery of a damaged storage device with I/O errors).

* The options '--lzip-name' and '--reference-file', auxiliary to '-u, --reproduce', have been added.

* Option aliases '--dump-tdata', '--remove-tdata' and '--strip-tdata', have been removed.

  * The new chapter 'Reproducing one sector' has been added to the manual.

  * Lzip 1.16 (or clzip 1.6) or newer is now required to run the tests.

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

Antonio Diaz, lziprecover author and maintainer.
Self-determination is a right, not a crime. Free Catalan political prisoners.
If you care about long-term archiving, please help me replace xz with lzip. See http://www.nongnu.org/lzip/lzip_benchmark.html#xz1
http://www.nongnu.org/lzip/manual/lzip_manual.html#Quality-assurance and
http://www.nongnu.org/lzip/xz_inadequate.html Thanks.

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