On 04/09/2018 02:16 PM, Craig Ringer wrote:
I'd like a middle ground where the kernel lets us register our interest and tells us if it lost something, without us having to keep eight million FDs open for some long period. "Tell us about anything that happens under pgdata/" or an inotify-style per-directory-registration option. I'd even say that's ideal.

Could there be a risk of a race condition here where fsync incorrectly returns success before we get the notification of that something went wrong?


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