Re: Fedora 32 system-wide change proposal: reduce installation media size by improving the compression ratio of SquashFS filesystem

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On Sun, Jan 05, 2020 at 10:08:07AM -0700, Chris Murphy wrote:
> I've pretty much concluded Fedora is best off dropping the nested ext4
> in favor of plain squashfs, and using zstd. It's not required to do
> both, but the benefit is additive and significant. The work in dracut
> and lorax to support plain squashfs, assembling it using overlayfs
> instead of device-mapper is already done, and tested.

I agree with Chris here, I think we should make the switch to plain
squashfs unless someone can come up something dramatic that it will
break :) Tweaking the current settings would be fine if we didn't have a
better, simpler, solution.

A side note about the xz bcj compression -- in some experiments I
noticed that enabling x86 and armthumb resulted in further reduction
(about 400k with the default block size). My guess was due to use of ARM
instructions in the firmware blobs.

-- 
Brian C. Lane (PST8PDT) - weldr.io - lorax - parted - pykickstart
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