On Thu, 10 Feb 2000, ITOH Yasufumi wrote:

> abs@netbsd.org wrote:
> 
> > 	Just curious - can the SIGINFO hack cause problems if pax is
> > 	being used to read/write to an actual tape device?
> 
> I don't think read/write is always atomic, but, ... well, ...
> I'm not sure --- this is the reason I'm sending to tech-kern. :-)

A successful read or write should be atomic. NFS kinda bends the rules a
bit, but other than that, your write should fully complete before (or
after) someone else's.

There's no guarantee of ordering, just atomiticity.

Take care,

Bill