On Thu, Oct  7, 2021 at 09:26:26AM -0700, Andres Freund wrote:
> Hi, 
> 
> On October 7, 2021 8:54:54 AM PDT, Bruce Momjian <br...@momjian.us> wrote:
> 
> >Uh, technically most drives use 512-byte sectors, but I don't know if
> >there is any guarantee that 512-byte sectors will not be torn --- I have
> >a feeling there isn't.  I think we get away with the hint bit case
> >because you can't tear a single bit.  ;-) 
> 
> We rely on it today, e.g. for the control file.

OK, good to know, and we can be sure the 16-byte blocks will terminate
on 512-byte boundaries.

-- 
  Bruce Momjian  <br...@momjian.us>        https://momjian.us
  EDB                                      https://enterprisedb.com

  If only the physical world exists, free will is an illusion.



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