Bug 950499 – Currently SquashFS, but DwarFS gives smaller size and faster read

• Status: UNCONFIRMED
• Product: Gentoo Release Media

[Description Vitaly Zdanevich 2025-03-03 11:17:11 UTC]

https://github.com/mhx/dwarfs

[Comment 1 Sam James 2025-03-03 11:20:00 UTC]

Please try to put some text into bug descriptions. I assume you're proposing that releng moves to it -- have you tried it? any measurements? ...?

[Comment 2 Vitaly Zdanevich 2025-03-03 11:33:31 UTC]

I tried as a user, and read comparison on the README.

Yes, I am about live USB images.

[Comment 3 Vitaly Zdanevich 2025-03-03 16:54:22 UTC]

Maybe the creator of DwarFS will try to repack https://github.com/mhx/dwarfs/discussions/250#discussioncomment-12377664

[Comment 4 Vitaly Zdanevich 2025-03-04 09:17:42 UTC]

Looks like much smaller with DwarFS:

.rw-r--r-- 2,967,098,279 root root  3 Mar 20:47 gentoo-live-l9.dwarfs
.rw-r--r-- 3,280,601,562 root root  3 Mar 20:36 gentoo-live-opt.dwarfs
.r--r--r-- 3,845,120,000 root root 16 Feb 21:50 gentoo-live/image.squashfs

[Comment 5 immolo 2025-03-04 16:30:39 UTC]

The results look promising, was a PoC build of the ISO also made to show it works as well as the current system?

I can't speak for Gentoo, however patches to add this as an option would at least be something I could see a use for if it works as advertised.

[Comment 6 Vitaly Zdanevich 2025-03-13 20:39:19 UTC]

Assistance needed, can you please share some wisdom here about ISO building? https://github.com/mhx/dwarfs/discussions/250