Re: ADSM DATA Movement/Reclamation Update
1998-04-05 22:16:17
Hi James,
Thanks for the update, but I am confused (nothing new there).
On the one hand, you say that the release that 'will be made immediately
available' (I presume that one that was placed on the ftp site 3 days
ago) ' contains corrections for all known data movement/reclamation
problems', but then go on to say ', and an option that will allow
customers to temporarily disable file aggregation so that tapes can be
better reclaimed'. Doesn't this suggest that there is still a problem?
We didn't start running the V3 server until the first fix, that disabled
reclamation of aggregates, was made available. Should be install this
latest kit (3.1.1.1)? Should we enable the NOAGGREGATES option? Will
aggregates then be properly reclaimed (I hope so, we are chewing through
tapes like crazy, mostly due to this problem).
You also make a comment that ' The next PTF for all servers will contain
the utilities and is expected early in the second quarter'. Isn't now
'early in the second quarter'? Or is there another PTF being made
available soon (3.1.1.2??)?
Regards,
Trevor
-----Original Message-----
From: James Riehl [SMTP:jimbo AT US.IBM DOT COM]
Sent: Saturday, April 04, 1998 7:27 AM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: ADSM DATA Movement/Reclamation Update
** ADSM DATA Movement/Reclamation Update **
In late January 1998, IBM ADSM development alerted customers to
a data
movement/reclamation problem in the ADSM version 3 server.
Updated servers
were made available to prevent the problem by disabling
reconstruction of
aggregated files during reclamation processing. In addition,
the development
team committed to provide a set of utilities that could be used
to analyze and
deal with files that were affected by the problem. The utilities
are in test
and are being finalized, but they are not quite ready for
distribution.
Since that time, customers have asked that ADSM development
provide a mechanism
to disable file aggregation so that tapes could be fully
reclaimed while these
utilities are being developed and tested. Other problems in the
version 3
server have also been corrected, including a rare situation that
may affect
non-aggregated files and/or platforms that were originally
believed to be
unaffected by the data movement/reclamation problem. These
fixes are ready for
distribution.
An ADSM PTF will be made immediately available for all version 3
servers. This
PTF contains corrections for all known data movement/reclamation
problems,
other corrective fixes that have been awaiting delivery to
customers, and an
option that will allow customers to temporarily disable file
aggregation so
that tapes can be better reclaimed. IBM ADSM development
strongly recommends
that all version 3 customers apply this corrective service
immediately. This
action will minimize the amount of work that may be required to
analyze and
recover from the data movement/reclamation problem when the
utilities are made
available.
We are continuing to refine and test the promised utilities and
apologize for
the delay in delivering them to you. The next PTF for all
servers will contain
the utilities and is expected early in the second quarter.
ADSM Server Development
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