Rebalancing TSM Database Issues

[buster99]

Hello, we are looking for assistance trying to reconfigure our TSM database filesystem sizes. We have 7 database filesystems in total. The problem is that the last 2 are larger than the other 5 due to a previous issue. We have done a rebalance/reduce to the filesystems which worked fine and now we want to bring them all to a more balanced size. Our issue is that the "chfs" command is not allowing us to reduce the 2 larger filesystems.

Here are our current filesysteme sizes for the tsm16 database.
[FONT=r_ansi] [/FONT]# df -g |grep tsm16
/dev/tsm16pkglv 25.00 11.64 54% 10 1% /tsm/tsm16pkg
/dev/tsm16dblv01 140.00 68.34 52% 53 1% /tsm/tsm16/db/tsmdb01
/dev/tsm16dblv02 140.00 68.34 52% 53 1% /tsm/tsm16/db/tsmdb02
/dev/tsm16dblv03 140.00 68.34 52% 54 1% /tsm/tsm16/db/tsmdb03
/dev/tsm16dblv04 140.00 68.34 52% 53 1% /tsm/tsm16/db/tsmdb04
/dev/tsm16dblv05 140.00 68.34 52% 55 1% /tsm/tsm16/db/tsmdb05
/dev/tsm16loglv 100.00 44.98 56% 116 1% /tsm/tsm16/log/activelog
/dev/tsm16archloglv 94.25 92.90 2% 13 1% /tsm/tsm16/log/archivelog
/dev/tsm16failloglv 12.50 12.50 1% 12 1% /tsm/tsm16/log/failoverlog
/dev/tsm16dblv06 239.00 104.82 57% 49 1% /tsm/tsm16/db/tsmdb06
/dev/tsm16dblv07 240.00 105.82 56% 49 1% /tsm/tsm16/db/tsmdb07


Here are the results and error when we try the chfs command with the minus option in it. We get the same result when we use "size=180G" also.
[FONT=r_ansi]# chfs -a size=-60G /tsm/tsm16/db/tsmdb06
[FONT=r_ansi]chfs: There is not enough free space to shrink the file system.

OSLEVEL - AIX 7.1
TSM Version - 6.3.4

Is this a TSM, AIX or DB2 Issue ?

Any suggestions would be appreciated.

Thank you
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[TiborB]

here: http://justaix.blogspot.sk/2011/01/cannot-reduce-filesystem-size.html are some tips, you can try them...

 

[buster99]

TiborB, Thank you for the reply. Looks interesting. We'll see if any of these suggestions will work for us.