./wip/zbackup, Globally-deduplicating backup tool

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Branch: CURRENT, Version: 1.4.4, Package name: zbackup-1.4.4, Maintainer: pkgsrc-users

zbackup is a globally-deduplicating backup tool, based on the ideas found in

Feed a large .tar into it, and it will store duplicate regions of it only
once, then compress and optionally encrypt the result. Feed another .tar file,
and it will also re-use any data found in any previous backups.
This way only new changes are stored, and as long as the files are not very
different, the amount of storage required is very low. Any of the backup files
stored previously can be read back in full at any time.

This is achieved by sliding a window with a rolling hash over the input at a
byte granularity and checking whether the block in focus was ever met already.

If a rolling hash matches, an additional full cryptographic hash is calculated
to ensure the block is indeed the same. The deduplication happens then.

Required to run:
[archivers/lzo] [devel/protobuf-c]

Required to build:

Master sites:

Version history: (Expand)