Initial benchmarks show better performance than btrfs (at least for some workloads), but more importanty, I like that it offers tiered/cache storage - so you can use a fast and small drive (NVMe) to speed up a slow and bigger drive (HDD). You can do that with ZFS as well of course, but it doesn’t have the massive RAM requirements. Also it’s much more easier to set up and configure in comparison.
BTRFS is honestly really great and has been for the last few years. Dont take the word of random people on the interwebs, check out some modern sources of info on the subject. Some people love to complain about RAID5/6 but if you use BTRFS the BTRFS way then it is solid.
With that said, if you dont need snapshots, drive mirroring, sub volumes, bit rot protection etc then EXT4 is hard to beat for reliability.
its not in any stable release of sddm, but its one of the exceptions Fedora makes for git releases in its stable branch. KDESIG devs were desperate to get an end to end wayland experience happening for the KDE spin.
Nothing much really. MGLRU was finally added this year to fix long-standing kernel OOM issues. Maybe some TPM stuff in systemd from Lennart. Maybe the pace of immutables will increase but who knows. Despite the occasional regressions am pretty happy with Linux.
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