User:ng0/drafts/zpaq

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zpaq is a incremental, journaling backup utility and archiver.

Installation

USE flags

USE flags for app-arch/zpaq Journaling incremental deduplicating archiving compressor

+jit Enable just-in-time compilation for improved performance. May prevent use of some PaX memory protection features in Gentoo Hardened.
debug Enable extra debug codepaths, like asserts and extra output. If you want to get meaningful backtraces see https://wiki.gentoo.org/wiki/Project:Quality_Assurance/Backtraces
Cannot load package information. Is the atom app-arch/libzpaq correct?

Emerge

Install app-arch/zpaq:

root #emerge --ask zpaq

Extras

app-arch/zpaq-extras

Emerging app-arch/zpaq-extras provides a set of additional compression profiles for zpaq:

root #emerge --ask app-arch/zpaq-extras

Usage

  • zpaq add backup.zpaq /mnt/external/*

will only add the files whose last-modified date or size has changed since the previous backup.

A zpaq archive can contain at most 4 billion files and at most 250 terabytes of data after deduplication and before compression.

External resources