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A comment on Unison File Synchronizer. Parent comment

Re:Unison File Synchronizer by robocat on Tuesday August 06, 2019 @06:38PM (#20630374)
> POSIX, although somewhat dated, has provided a good enough abstraction layer for filesystems and OSs

I know nothing about POSIX, but I presume we all want stronger guarantees to avoid the risk of syncing a corrupted file.

https://danluu.com/file-consistency/

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Re:Unison File Synchronizer by willtim on Tuesday August 06, 2019 @06:42PM (#20630395)
That's really the job of the filesystem to protect against corruption using checksums. ZFS will do this and hopefully more will follow. I suppose a file sync tool could detect a change of contents with no change of mtime, but that would be expensive.
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