Journaled File System [was Re: AIX vs standard unix]

[Bob Shair]

moody at snap.austin.ibm.com writes:

>In article <11779 at ncar.ucar.edu> pack at acd.uucp (Daniel Packman) writes:
>>The ability to expand into unused space is not as useful as it could be
>>if you cannot easily *shrink* filesystems as well.  Few of us have the
>>luxury of having lots of unused disk space waiting around just for the
>>flexability of exanding a filesystem.  I understand this ability to
>>shrink filesystems will be in a future AIX release.

>Where did you get this information?  I don't believe it's true.

Almost certainly, that information was gotten from his IBM 
representative.  It is not, however, stated in the correct IBM    
terminology.  This is not surprising... learning to talk IBM can
take MANY years of practice.   

As one who's been speaking IBM since 1963, and hearing about 
our intentions to shrink AIX V3 file systems since March '89,
let me see if I can use the right terms.

   IBM "intends" to offer the ability to shrink filesystems 
   at some point in the future on AIX V3.

I believe that's a correct statement... please take my disclaimer
that I'm not authorized to represent IBM on this seriously.

This is not at all (in IBM) the same as saying that IBM "plans"
to offer the ability to shrink filesystems in a future release.
In IBM, that would mean that an internal commitment had been made
for a specific release, at a specific time.  This is what 
Mr. Moody is denying.

Sorry for the long lesson on how to understand IBM... in our
next lesson, class, we'll discuss "what is a DASD?" :-)
-- 

Bob Shair                          shair at chgvmic1.vnet.ibm.com
Scientific Computing Specialist    SHAIR at UIUCVMD (bitnet)
IBM Champaign