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| -rw-r--r-- | gnu/packages/backup.scm | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/gnu/packages/backup.scm b/gnu/packages/backup.scm index 34ddba4538..c62c96ed31 100644 --- a/gnu/packages/backup.scm +++ b/gnu/packages/backup.scm @@ -80,6 +80,7 @@ #:use-module (gnu packages rsync) #:use-module (gnu packages ssh) #:use-module (gnu packages tls) + #:use-module (gnu packages valgrind) #:use-module (gnu packages xml)) (define-public duplicity @@ -381,6 +382,65 @@ file names to standard output. Auxiliary scripts are needed that act on this list and implement the backup strategy.") (license license:gpl3+))) +(define-public snapraid + (package + (name "snapraid") + (version "11.5") + (source + (origin + (method git-fetch) + (uri (git-reference + (url "https://github.com/amadvance/snapraid") + (commit (string-append "v" version)))) + (file-name (git-file-name name version)) + (sha256 + (base32 "0dlhdsmq5l208zldfr9z9g0p67wry81dr0r23lpybb5c9fm2f2rm")))) + (build-system gnu-build-system) + (arguments + `(#:configure-flags + (list "--enable-valgrind" + "--with-blkid") + #:phases + (modify-phases %standard-phases + (add-before 'bootstrap 'set-version + (lambda _ + (setenv "VERSION" ,version) + (patch-shebang "autover.sh")))))) + (native-inputs + `(("automake" ,automake) + ("autoconf" ,autoconf) + + ;; For the tests. + ("valgrind" ,valgrind))) + (inputs + `(("util-linux" ,util-linux "lib"))) ; libblkid + (home-page "https://www.snapraid.it/") + (synopsis "Efficient backups using parity snapshots across disk arrays") + (description + "SnapRAID backs up files stored across multiple storage devices, such as +disk arrays, in an efficient way reminiscent of its namesake @acronym{RAID, +Redundant Array of Independent Disks} level 4. + +Instead of creating a complete copy of the data like classic backups do, it +saves space by calculating one or more sets of parity information that's a +fraction of the size. Each parity set is stored on an additional device the +size of the largest single storage volume, and protects against the loss of any +one device, up to a total of six. If more devices fail than there are parity +sets, (only) the files they contained are lost, not the entire array. Data +corruption by unreliable devices can also be detected and repaired. + +SnapRAID is distinct from actual RAID in that it operates on files and creates +distinct snapshots only when run. It mainly targets large collections of big +files that rarely change, like home media centers. One disadvantage is that +@emph{all} data not in the latest snapshot may be lost if one device fails. An +advantage is that accidentally deleted files can be recovered, which is not the +case with RAID. + +It's also more flexible than true RAID: devices can have different sizes and +more can be added without disturbing others. Devices that are not in use can +remain fully idle, saving power and producing less noise.") + (license license:gpl3+))) + (define-public btar (package (name "btar") |