Re: [HACKERS] fsync -> fdatasync in backend/storage/file/fd.c

> 
> I don't remember if it has been mentioned.
> 
> Anyhow, I think that it would be nice to change fsync'es into
> fdatasync'es (of course as an autoconf-igurable option). I don't think
> it's necessary to update all file's metadata each time a file is
> flushed.
> 
> I dunno where it's implemented. But it's for sure implemented in Linux.
> 

We have a way of keeping proper consistency with a system sync() every
30 seconds.  See the archive.   I think it is on the short list.

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