I’ve noticed that F42 Silverblue (can’t check if this happens in the normal version) drops the compression mount options for btrfs filesystems. I’m not sure what part of the Silverblue chain is doing this. It only happens with the root filesystem, not other disks. I’ve checked compress and compress-force, same results.
The /etc/stab is set up correctly, but the auto-generated systemd mounts exclude this from their Options section.
I don’t know when this started, suffice to say it’s happening with 42.20250502.0.