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All Projects → Zygo → Bees

Zygo / Bees

Licence: gpl-3.0
Best-Effort Extent-Same, a btrfs dedup agent

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BEES

Best-Effort Extent-Same, a btrfs deduplication agent.

About bees

bees is a block-oriented userspace deduplication agent designed for large btrfs filesystems. It is an offline dedupe combined with an incremental data scan capability to minimize time data spends on disk from write to dedupe.

Strengths

  • Space-efficient hash table and matching algorithms - can use as little as 1 GB hash table per 10 TB unique data (0.1GB/TB)
  • Daemon incrementally dedupes new data using btrfs tree search
  • Works with btrfs compression - dedupe any combination of compressed and uncompressed files
  • NEW Works around btrfs send problems with dedupe and incremental parent shapshots
  • Works around btrfs filesystem structure to free more disk space
  • Persistent hash table for rapid restart after shutdown
  • Whole-filesystem dedupe - including snapshots
  • Constant hash table size - no increased RAM usage if data set becomes larger
  • Works on live data - no scheduled downtime required
  • Automatic self-throttling based on system load

Weaknesses

  • Whole-filesystem dedupe - has no include/exclude filters, does not accept file lists
  • Requires root privilege (or CAP_SYS_ADMIN)
  • First run may require temporary disk space for extent reorganization
  • First run may increase metadata space usage if many snapshots exist
  • Constant hash table size - no decreased RAM usage if data set becomes smaller
  • btrfs only

Installation and Usage

Recommended Reading

More Information

Bug Reports and Contributions

Email bug reports and patches to Zygo Blaxell [email protected].

You can also use Github:

    https://github.com/Zygo/bees

Copyright & License

Copyright 2015-2018 Zygo Blaxell [email protected].

GPL (version 3 or later).

Note that the project description data, including the texts, logos, images, and/or trademarks, for each open source project belongs to its rightful owner. If you wish to add or remove any projects, please contact us at [email protected].