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A comment on Ask HN: Why don't file systems and OS's provide file system transactions?. Parent comment

Re:Ask HN: Why don't file systems and OS's provide file syst... by hansvm on Friday July 22, 2022 @11:49PM (#32200158)
It's only easy to do in userspace for consenting adults though. The whole point of an OS is to manage contended resources, and this particular contended resource requires every process to implement their own way of safely interacting with every other process
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Re:Ask HN: Why don't file systems and OS's provide file syst... by Joker_vD on Saturday July 23, 2022 @01:38AM (#32200685)
And now I have flashbacks of trying to use flock(2)/lockf(3) for their intended purposes... such miserably misdesgined (and underdocumented) pieces of file API, bloody hell.
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Re:Ask HN: Why don't file systems and OS's provide file syst... by bhawks on Saturday July 23, 2022 @12:52AM (#32200497)
The filesystem abstraction can only work when it's used by cooperating, well mannered consenting adults. At it's core it is just a hierarchical key-value store where the core os plays a middle manager role connecting applications looking up keys and filesystem plugins serving values and persisting them onto the kernels block device apis.

It certainly can be a convenient and productive abstraction but the model itself has very clear natural limits.

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