Re: fsync, rename, O_ATOMIC/O_PONIES

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Hi XFS devs,

I'm a bit late to the party, but I'd like to respond to some comments at http://lwn.net/Articles/476263/#Comments
http://lwn.net/Articles/484709/

> Could any of the fsync advocates post real code that does the atomic variant of open, write, close?

> Hint: it's not possible without tons of regressions.

> Linux devs should really provide a proper solution (like O_ATOMIC) instead of blaming app devs for not doing the impossible.

I'd like to ask:
- Is there a tool to log all unsafe operations?
- What is the *right* way to update a file?

I've asked the last question multiple times, but nobody has been able to give me a proper answer.

Greetings,

Olaf

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