Borg is deduplicating

backup software Backup software are computer programs used to perform a backup; they create supplementary exact copies of files, databases or entire computers. These programs may later use the supplementary copies to restore the original contents in the event of ...

for various

Unix Unix (; trademarked as UNIX) is a family of multitasking, multiuser computer operating systems that derive from the original AT&T Unix, whose development started in 1969 at the Bell Labs research center by Ken Thompson, Dennis Ritchie, a ...

-like operating systems. Originally it called Attic.

History

Attic development began in 2010 and was accepted to Debian in August 2013. Attic is available from pip and notably part of Debian, Ubuntu, Arch and Slackware. In 2015, Attic was forked as "Borg" to support a "more open, faster paced development", according to its developers. Many issues in Attic have been fixed in this fork, but backward compatibility with the original program has been lost (a non-reversible upgrade process exists). Borg 1.0.0 was released on 5 March 2016, Borg 1.1.0 was released on 7 October 2017. As of 2018, Borg is under active development by many contributors, while Attic is not being developed.Stable releases are available from various Linux distributions such as

Debian Debian (), also known as Debian GNU/Linux, is a Linux distribution composed of free and open-source software, developed by the community-supported Debian Project, which was established by Ian Murdock on August 16, 1993. The first version of De ...

Ubuntu Ubuntu ( ) is a Linux distribution based on Debian and composed mostly of free and open-source software. Ubuntu is officially released in three editions: '' Desktop'', '' Server'', and ''Core'' for Internet of things devices and robots. All th ...

Fedora A fedora () is a hat with a soft brim and indented crown.Kilgour, Ruth Edwards (1958). ''A Pageant of Hats Ancient and Modern''. R. M. McBride Company. It is typically creased lengthwise down the crown and "pinched" near the front on both sides ...

OpenSUSE openSUSE () is a free and open source RPM-based Linux distribution developed by the openSUSE project. The initial release of the community project was a beta version of SUSE Linux 10.0. Additionally the project creates a variety of tools, s ...

and others, from the ports collection of various BSD derivatives and from brew for macOS. The project provides pre-built binaries for Linux, FreeBSD and macOS. As of April 2021, the attic website was removed.

Design

Borg offers efficient, deduplicated, compressed and (optionally) encrypted and authenticated backups. A backup includes metadata like owner/group, permissions, POSIX ACLs and Extended file attributes. It handles special files also - like hardlinks, symlinks, devices files, etc. Internally it represents the files in an archive as a stream of metadata, similar to

tar Tar is a dark brown or black viscosity, viscous liquid of hydrocarbons and free carbon, obtained from a wide variety of organic matter, organic materials through destructive distillation. Tar can be produced from coal, wood, petroleum, or peat. ...

and unlike tools such as git. The

Borg The Borg are an alien group that appear as recurring antagonists in the ''Star Trek'' fictional universe. The Borg are cybernetic organisms (cyborgs) linked in a hive mind called "the Collective". The Borg co-opt the technology and knowledg ...

project has created extensive documentation of the internal workings. It uses a rolling hash to implement global data deduplication. Compression defaults to zlib, encryption is

AES AES may refer to: Businesses and organizations Companies * AES Corporation, an American electricity company * AES Data, former owner of Daisy Systems Holland * AES Eletropaulo, a former Brazilian electricity company * AES Andes, formerly AES Gener ...

(via

OpenSSL OpenSSL is a software library for applications that provide secure communications over computer networks against eavesdropping or need to identify the party at the other end. It is widely used by Internet servers, including the majority of HT ...

) authenticated by a

HMAC In cryptography, an HMAC (sometimes expanded as either keyed-hash message authentication code or hash-based message authentication code) is a specific type of message authentication code (MAC) involving a cryptographic hash function and a secre ...

References

External links

*
BorgBackup
{{Backup software 2010 software Backup software for Linux Free backup software Python (programming language) software Software using the BSD license

History

Design

See also

References

External links