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Just an anecdote, but when I used gocryptfs on a btrfs partition, I'd always end up with a few corrupted files on power failure. After switching to gocryptfs on ext4, I never have any corruption.

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I have used heavily[1] the combination btrfs+gocryptfs for many years and had no problems. The only quirk is that I have to pass the -noprealloc flag to gocryptfs, otherwise the performance is really bad.

[1] by heavily, I mean that I use it for my home directory

I used it for my home directory too for several years up until a few months ago, but with default settings. The corrupted files were almost always Firefox cookies db and cache files. Maybe there's something specific about how Firefox writes them that makes them prone to corruption.

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