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Filippo Valsorda :go:

I am writing an application that really cares about durability of created files (a Certificate Transparency log), and... oof.

I fsync the file. I fsync the directory. Ok.

But... how do I test it? Even targeting a specific filesystem, I have to make VMs and try to race killing them?

Matthew Sackman

@filippo @aphyr developed (or commissioned, or collaborated with) a project to allow dropping of the fs cache, which sounds like it might be what you're after. However, I can't find it because I'm in the UK and we're geoblocked due to our badly thought-through laws.

Apr 22, 2025, 10:44 AM·Public·Web
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