[bug#40236] [PATCH] doc: Suggest Btrfs with compression instead of ext4 for root partition.

[Efraim Flashner <efraim@flashner.co.il>]

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On Sun, May 31, 2020 at 09:39:23AM +0200, Pierre Neidhardt wrote:
> Now that 37305 is merged, we can revisit this issue.
> 
> 1. This patch only includes a documentation update.
> 2. We could make Btrfs the default in the graphical installer.
> 3. We would probably need to update the tests, at least for the latter.
> 
> As mentioned above, I think it's safe to enable Btrfs without subvolume,
> with Zstd compression.
> 
> For subvolumes, we would need to implement the corresponding tests.
> 
> Thoughts?

My main concern is the possibility of data loss. I don't know how much
is FUD and how much is legit so to me it seems safest to see what
OpenSuSE uses and to mimic that a bit (in terms of not using most of the
features available).

That said, I use btrfs with no subvolumes with compression turned on and
I'm pretty happy with that.

Two more things:
/var/guix/db should probably have CoW disabled, as should /tmp
would the deduplication of btrfs be "better" than the deduplication from
the daemon?


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