It might be related to size of reclamation stgpool and transaction size.
If reclamation have filled the reclamation pool to 75% and next set of
files in inter-server transaction is worth 20% of reclamation pool size,
you will have the pool filled to 75+20=95% before migration threshold is
passed.

Zlatko Krastev
IT Consultant






"PINNI, BALANAND (SBCSI)" <bp3965 AT SBC DOT COM>
Sent by: "ADSM: Dist Stor Manager" <ADSM-L AT VM.MARIST DOT EDU>
19.06.2003 19:08
Please respond to "ADSM: Dist Stor Manager"


        To:     ADSM-L AT VM.MARIST DOT EDU
        cc:
        Subject:        Re: Tape reclaim & stgpool migration question/


Reclamation % is set to 50 on tapepool.Reclamation Threshold: 50

Migration set as High Mig Pct: 80 on SQUEnTIal  ACCESS Stgpool disk with
devclass cfile.
                Low Mig Pct: 0

Migration takes place but after certain retries . What I see is after dsik
stgpool reach 95% it retries with No more space in stgpool of disk pool to
which tapes are getting reclaimed.

My question is why it is not sensing 80% on sequential access disk
stgpool.

Thanks
Balanand Pinni



-----Original Message-----
From: Jin Bae Chi [mailto:Jbaechi AT CSCC DOT EDU]
Sent: Thursday, June 19, 2003 10:51 AM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: Tape reclaim & stgpool migration question/


You may have a little confusion about Reclamation and Migration.

Do 'q stg xxxpool f=d' and find 'Reclamation Threshold' which governs how
reclamation will be done.

Highmig=xx and lowmig=xx are parameters that works only for Migration of
data from one pool to another. When a stg reaches highmig #, it kicks
migration until reaches lowmig#.

Hope this helps.


Gus





>>> bp3965 AT SBC DOT COM 06/19/03 11:25AM >>>
All-

I recently created reclaim stgpool with upper mig to 80% and lower mig to
0%.

But the CFILE devclass stgpool that is disk when gets to 80 % migrate
level
, tapes do not stop to reclaim  but it continues .What might have been
missing????

Thanks in advance

Balanand Pinni