Re: True fsync() in Linux (on IDE)

[Jamie Lokier]

Peter Zaitsev wrote:
> If file system would guaranty atomicity of write() calls (synchronous
> would be enough) we could disable it and get good extra performance.

Store an MD5 or SHA digest of the page in the page itself, or elsewhere.
(Obviously the digest doesn't include the bytes used to store it).

Then partial write errors are always detectable, even if there's a
hardware failure, so journal writes are effectively atomic.

-- Jamie
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