Re: soft updates and qmail (RE: qmail IO problems)

[Jack Rusher]

Andre Oppermann wrote:
> 
> > Since when does `atomic' equal `synchronous' ?
> 
> Because otherwise it would not be atomically, would it?

  I am loath to add to this bloated thread, but...  atomic and durable
aren't the same thing.  This is why A.C.I.D. semantics contain both A &
D.  The atomicity guarantee concerning rename is meant to suggest that
there be no time when the filesystem view contains either both links or
no link to the file you are renaming.  The operation will either succeed
or fail as an atomic unit with regard to the system's view of the
filesystem.  This DOES NOT mean that the data will be on stable store.

-- 
Jack Rusher, Senior Engineer | mailto:[EMAIL PROTECTED]
Integratus, Inc.             | http://www.integratus.com


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