Re: atomic renames on freebsd w/ softupdates, was Re: djblinux?

Laurent Bercot wrote:
>>this is a little OT here, but there's one thing bernstein relies on
>>which is not entirely true:  atomic renames of files.  for example
>>freebsds soft-updates
> 
> 
>  <URL: http://cr.yp.to/qmail/faq/reliability.html#filesystems > makes
> it clear: do not use softupdates for the qmail queue. Use a filesystem
> that strictly conforms to the Unix semantics.
> 
>  Neither DJB nor you nor me can guarantee that rename() or anything of
> the kind will work properly if the underlying filesystem uses an
> unreliable sequence of operations. This is not the software author's
> problem - it's the administrator's problem.

This brings up the question -- does the Posixtest project's
testsuite verify that atomic rename works?

http://posixtest.sourceforge.net/

- Dan