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nixos/installer: drop support for ReiserFS and JFS

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ReiserFS has not been actively maintained for many years. It has been
marked as obsolete since Linux 6.6, and is scheduled for removal
in 2025. A warning is logged informing users of this every time a
ReiserFS file system is mounted. It suffers from unfixable issues
like the year 2038 problem.

JFS is a slightly more ambiguous case. It also has not been actively
maintained for years; even in 2008 questions were being raised
about its maintenance state  and IBM’s commitment to it, and some
enterprise distributions were opting not to ship support for it as
a result. It will [indefinitely postpone journal writes], leading
to data loss over potentially arbitrary amounts of time. Kernel
developers [considered marking it as deprecated] last year, but
no concrete decision was made. There have been [occasional fixes]
to the code since then, but even the developer of much of those was
not opposed to deprecating it.

[considered marking it as deprecated]: https://lore.kernel.org/lkml/Y8DvK281ii6yPRcW@infradead.org/
[indefinitely postpone journal writes]: https://www.usenix.org/legacy/events/usenix05/tech/general/full_papers/prabhakaran/prabhakaran.pdf
[occasional fixes]: https://www.phoronix.com/news/JFS-Linux-6.7-Improvements

Regardless of whether JFS should be removed from the kernel, with all
the implications for existing installations that entails, I think
it’s safe to say that no new Linux installation should be using
either of these file systems, and that it’s a waste of space and
potential footgun to be shipping support for them on our standard
installation media. We’re lagging behind other distributions on
this decision; neither is supported by Fedora’s installation media.

(It also just so happens that `jfsutils` is the one remaining package
in the minimal installer ISO that has reproducibility issues, due to
some cursed toolchain bug, but I’m not trying to Goodhart’s law
this or anything. I just think we shouldn’t be shipping it anyway.)
This commit is contained in:
Emily 2024-09-05 15:26:13 +01:00
parent 2495ff4bfa
commit 7b9bb0a9a1
2 changed files with 3 additions and 1 deletions
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2
nixos/doc/manual/release-notes/rl-2411.section.md
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@ -407,6 +407,8 @@
- The `openlens` package got removed, suggested replacment `lens-desktop` - The `openlens` package got removed, suggested replacment `lens-desktop`
- The NixOS installation media no longer support the ReiserFS or JFS file systems by default.
## Other Notable Changes {#sec-release-24.11-notable-changes} ## Other Notable Changes {#sec-release-24.11-notable-changes}
<!-- To avoid merge conflicts, consider adding your item at an arbitrary place in the list instead. --> <!-- To avoid merge conflicts, consider adding your item at an arbitrary place in the list instead. -->

2
nixos/modules/profiles/base.nix
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@ -50,7 +50,7 @@
# Include support for various filesystems and tools to create / manipulate them. # Include support for various filesystems and tools to create / manipulate them.
boot.supportedFilesystems = boot.supportedFilesystems =
[ "btrfs" "cifs" "f2fs" "jfs" "ntfs" "reiserfs" "vfat" "xfs" ] ++ [ "btrfs" "cifs" "f2fs" "ntfs" "vfat" "xfs" ] ++
lib.optional (lib.meta.availableOn pkgs.stdenv.hostPlatform config.boot.zfs.package) "zfs"; lib.optional (lib.meta.availableOn pkgs.stdenv.hostPlatform config.boot.zfs.package) "zfs";
# Configure host id for ZFS to work # Configure host id for ZFS to work