app-arch / lziprecover

Lziprecover is a data recovery tool and decompressor for lzip compressed files

Official package sites : http://www.nongnu.org/lzip/lziprecover.html ·

Lziprecover is a data recovery tool and decompressor for files in the lzip compressed data format (.lz), able to repair slightly damaged files, recover badly damaged files from two or more copies, extract data from damaged files, decompress files and test integrity of files. The lzip file format is designed for long-term data archiving. It is clean, provides very safe 4 factor integrity checking, and is backed by the recovery capabilities of lziprecover. 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. Lziprecover makes lzip files resistant to bit-flip (one of the most common forms of data corruption), and can safely merge multiple damaged backup copies. If the cause of file corruption is damaged media, the combination GNU ddrescue + lziprecover is the best option for recovering data from multiple damaged copies. If a file is too damaged for lziprecover to repair it, all the recoverable data in all members of the file can be extracted with the '-D' option. Lziprecover is able to efficiently extract a range of bytes from a multi-member file, because it only decompresses the members containing the desired data. Lziprecover can print correct total file sizes and ratios even for multi-member files. When recovering data, lziprecover takes as arguments the names of the damaged files and writes zero or more recovered files depending on the operation selected and whether the recovery succeeded or not. The damaged files themselves are never modified. When decompressing or testing file integrity, lziprecover behaves like lzip or lunzip. To give you an idea of its possibilities, when merging two copies, each of them with one damaged area affecting 1 percent of the copy, the probability of obtaining a correct file is about 98 percent. With three such copies the probability rises to 99.97 percent. For large files (a few MB) with small errors (one sector damaged per copy), the probability approaches 100 percent even with only two copies. Lziprecover is not a replacement for regular backups, but a last line of defense for the case where the backups are also damaged.

v1.21 :: 0 :: gentoo

Modified
License
GPL-2+
Keywords
amd64 x86
Repository mirror & CI · gentoo
Merge updates from master
Michał Górny · gentoo
app-arch/lziprecover: Drop old
Signed-off-by: Michał Górny <mgorny@gentoo.org>
Repository mirror & CI · gentoo
Merge updates from master
Thomas Deutschmann · gentoo
app-arch/lziprecover: x86 stable (bug #679898)
Package-Manager: Portage-2.3.62, Repoman-2.3.12 Signed-off-by: Thomas Deutschmann <whissi@gentoo.org>
Repository mirror & CI · gentoo
Merge updates from master
Mikle Kolyada · gentoo
app-arch/lziprecover: amd64 stable wrt bug #679898
Signed-off-by: Mikle Kolyada <zlogene@gentoo.org> Package-Manager: Portage-2.3.62, Repoman-2.3.11 RepoMan-Options: --include-arches="amd64"
Repository mirror & CI · gentoo
Merge updates from master
Lars Wendler · gentoo
app-arch/lziprecover: Bump to version 1.21
Package-Manager: Portage-2.3.59, Repoman-2.3.12 Signed-off-by: Lars Wendler <polynomial-c@gentoo.org>
Repository mirror & CI · gentoo
Merge updates from master
Michał Górny · gentoo
app-arch/lziprecover: Clean old up
Repository mirror & CI · gentoo
Merge updates from master
Mikle Kolyada · gentoo
app-arch/lziprecover: amd64 stable wrt bug #651508
Package-Manager: Portage-2.3.24, Repoman-2.3.6
Thomas Deutschmann · gentoo
app-arch/lziprecover: x86 stable (bug #651508)
Package-Manager: Portage-2.3.40, Repoman-2.3.9
Michał Górny · gentoo
app-arch/lziprecover: Drop old
Lars Wendler · gentoo
app-arch/lziprecover: Removed old.
Package-Manager: Portage-2.3.24, Repoman-2.3.6
Lars Wendler · gentoo
app-arch/lziprecover: Bump to version 1.20. Removed old.
Package-Manager: Portage-2.3.24, Repoman-2.3.6
Lars Wendler · gentoo
app-arch/lziprecover: Bump to version 1.20_rc1. Removed old.
Package-Manager: Portage-2.3.19, Repoman-2.3.6
Lars Wendler · gentoo
app-arch/lziprecover: Bump to versions 1.19 and 1.20_pre1
Package-Manager: Portage-2.3.5, Repoman-2.3.2
Lars Wendler · gentoo
app-arch/lziprecover: Bump to version 1.19_rc1. Removed old.
Package-Manager: Portage-2.3.5, Repoman-2.3.2
Robin H. Johnson · gentoo
Drop $Id$ per council decision in bug #611234.
Signed-off-by: Robin H. Johnson <robbat2@gentoo.org>
Harri Nieminen · gentoo
app-arch/lziprecover: Fix toolong.DESCRIPTION
Package-Manager: Portage-2.3.3, Repoman-2.3.1 Closes: https://github.com/gentoo/gentoo/pull/3996
T. Malfatti · gentoo
media-libs/portaudio: Version bump
Lars Wendler · gentoo
app-arch/lziprecover: Bump to version 1.19_pre2. Removed old.
Package-Manager: Portage-2.3.3, Repoman-2.3.1
Lars Wendler · gentoo
app-arch/lziprecover: Removed old.
Package-Manager: portage-2.3.0 Signed-off-by: Lars Wendler <polynomial-c@gentoo.org>
Lars Wendler · gentoo
app-arch/lziprecover: Bump to version 1.19_pre1
Package-Manager: portage-2.3.0 Signed-off-by: Lars Wendler <polynomial-c@gentoo.org>
Agostino Sarubbo · gentoo
app-arch/lziprecover: x86 stable wrt bug #583926
Package-Manager: portage-2.2.28 RepoMan-Options: --include-arches="x86" Signed-off-by: Agostino Sarubbo <ago@gentoo.org>
Agostino Sarubbo · gentoo
app-arch/lziprecover: amd64 stable wrt bug #583926
Package-Manager: portage-2.2.28 RepoMan-Options: --include-arches="amd64" Signed-off-by: Agostino Sarubbo <ago@gentoo.org>
Lars Wendler · gentoo
app-arch/lziprecover: Removed old.
Package-Manager: portage-2.2.28 Signed-off-by: Lars Wendler <polynomial-c@gentoo.org>
Lars Wendler · gentoo
app-arch/lziprecover: Bump to version 1.18
Package-Manager: portage-2.2.28 Signed-off-by: Lars Wendler <polynomial-c@gentoo.org>
Lars Wendler · gentoo
app-arch/lziprecover: Bump to version 1.18_pre3. Removed old.
Package-Manager: portage-2.2.27 Signed-off-by: Lars Wendler <polynomial-c@gentoo.org>
Robin H. Johnson · gentoo
proj/gentoo: Initial commit
This commit represents a new era for Gentoo: Storing the gentoo-x86 tree in Git, as converted from CVS. This commit is the start of the NEW history. Any historical data is intended to be grafted onto this point. Creation process: 1. Take final CVS checkout snapshot 2. Remove ALL ChangeLog* files 3. Transform all Manifests to thin 4. Remove empty Manifests 5. Convert all stale $Header$/$Id$ CVS keywords to non-expanded Git $Id$ 5.1. Do not touch files with -kb/-ko keyword flags. Signed-off-by: Robin H. Johnson <robbat2@gentoo.org> X-Thanks: Alec Warner <antarus@gentoo.org> - did the GSoC 2006 migration tests X-Thanks: Robin H. Johnson <robbat2@gentoo.org> - infra guy, herding this project X-Thanks: Nguyen Thai Ngoc Duy <pclouds@gentoo.org> - Former Gentoo developer, wrote Git features for the migration X-Thanks: Brian Harring <ferringb@gentoo.org> - wrote much python to improve cvs2svn X-Thanks: Rich Freeman <rich0@gentoo.org> - validation scripts X-Thanks: Patrick Lauer <patrick@gentoo.org> - Gentoo dev, running new 2014 work in migration X-Thanks: Michał Górny <mgorny@gentoo.org> - scripts, QA, nagging X-Thanks: All of other Gentoo developers - many ideas and lots of paint on the bikeshed