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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.) |
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