To me, the problems with HFS and ZFS files seems to be a design flaw. When
I was at P&H Mining, we had the same problem. The root file kept growing -
mostly I think because of logging activity. The files were kept for only a
week and then automatically deleted, but the HFS file just kept getting more
extents. It never made sense to me, when the total amount of data wasn't
groing..
Eric
Eric Bielefeld
Sr. Systems Programmer
Milwaukee, Wisconsin
414-475-7434
----- Original Message -----
From: "Edward Jaffe" <[email protected]>
Newsgroups: bit.listserv.ibm-main
To: <[email protected]>
Sent: Wednesday, April 15, 2009 10:12 AM
Subject: Re: Copy/restore OMVS.ROOT - what about defrag?
Mark Jacobs wrote:
We have a problem when a hfs/zfs grows to a huge size and since partial
release doesn't work on these files to recover the allocated but unused
space we have to perform a copy process to a new dataset.
We have the same issue here. Our daily backups and weekly dumps got slower
and slower and we didn't know why. Turned out many of our HFS/ZFS files
had grown unbelievably huge (due to temporary spikes in needed DASD
capacity), yet were practically empty. Reallocating them was no trivial
task. A real PITA!
--
Edward E Jaffe
Phoenix Software International, Inc
5200 W Century Blvd, Suite 800
Los Angeles, CA 90045
310-338-0400 x318
[email protected]
http://www.phoenixsoftware.com/
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