Release 2.0.0b18, beta quality, for testing only

[ThomasWaldmann]

borgbackup 2.0.0b18 beta release - do not use this on production backup repositories.

Long changelog:
https://borgbackup.readthedocs.io/en/2.0.0b18/changes.html#version-2-0-0b18-2025-06-19

If you use pip to install this, use: pip install "borgbackup==2.0.0b18"

Docs: https://borgbackup.readthedocs.io/en/2.0.0b18/

Discussion:

Notes:

• Give feedback if you find the linux32 (32bit intel/amd) binary useful.
• The macOS intel binaries will come later.

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This discussion was created from the release Release 2.0.0b18.

[ThomasWaldmann]

There were quite big changes in all chunker-related code and there is also a new buzhash64 chunker.

Please give that a good amount of testing, chunker changes often affect deduplication, so we should find/fix all chunker issues while borg2 is in beta.

[bbx0]

Looks like the signature borgbackup-2.0.0b18.tar.gz.asc is missing, please can you add it to the release? I use it verify the sources to produce docker images also for borg2.

[ThomasWaldmann]

Oh, oops. Done now!

Also the macOS intel binary is now available.

[bbx0]

Awesome, thanks a lot!

[zR-JB]

Could someone please explain to me the rough plan for borg 2. I see officially it is still in "beta quality" status, in my testing it seems pretty stable.

What exactly are you guys waiting for, before making the release switch to borg 2.

• Just letting some time pass, in case people find some more bugs
• implement more features?
• fix any known bug, which is not fixed yet?

Thanks for any answer, I really love the project, and understand that preventing data loss at any cost is the upmost priority, I was just wondering what the exact reasons were :D

[ThomasWaldmann]

Since recently I am working on storing pack files into the repository instead of using a separate file for each chunk.

That will be a major and "breaking" change, but is needed for high latency and/or high api cost repositories (like cloud or sftp).

#8572

[zR-JB]

Ah, thanks for linking the issue. So borg 2 is still not "feature complete" do I understand that correctly 😄

[FelixSchwarz]

I think the idea is to put all breaking changes (data format, protocol) in 2.0 and then keep the software stable for many years to come.

[ThomasWaldmann]

In case anybody is still using b18:

please switch to b19, there is a serious data corruption issue in b18!