Hi gang !

A strange behavior, I can't explain on a TSM server v 5.2.2.1, aix 5.2.
I have an AIX client (5.1.6.9) belonging a policy domain where default
management class points to a primary pool on disk, itself migrating to a
collocated tape pool. This client was defined on the server with max
mount points = 1, and has an entry in it's dsm.sys specifiying
RESOURceutilization 10. The backup of this node is initiated from a
crontabed script invoking following command : "dsmc incremental
-subdir=yes /frs36 /frs36/rs36/QS36F".
I have remarked that this node was using numerous tapes, most of them
partilly filled (< 5%) and tried to find out why. In today's activity
log I see following entries, all of them concerning tapes belonging this
node :


05/14/04 02:11:01     ANR0406I Session 9799 started for node xxxxxx
(AIX) (Tc 
                       p/Ip xxxxxxx(62444)). (SESSION: 9799) 
05/14/04 02:16:57     ANR8337I LTO volume 000113 mounted in drive
LTO1DR6 (/dev 
                       /rmt6). (SESSION: 9799)

05/14/04 02:17:20     ANR0511I Session 9799 opened output volume 000113.
(SESSI 
                       ON: 9799)

05/14/04 02:55:40     ANR0514I Session 9799 closed volume 000113.
(SESSION: 979 
                       9)

05/14/04 02:56:45     ANR8336I Verifying label of LTO volume 000113 in
drive LT 
                       O1DR6 (/dev/rmt6). (SESSION: 9799)

05/14/04 02:57:26     ANR8468I LTO volume 000113 dismounted from drive
LTO1DR6  
                       (/dev/rmt6) in library LTOLIB1. (SESSION: 9799)  
########################################################################
#############

05/14/04 02:11:05     ANR0406I Session 9801 started for node xxxxxxx
(AIX) (Tc 
                       p/Ip xxxxxxxxxx(62445)). (SESSION: 9801) 
05/14/04 02:17:01     ANR8337I LTO volume 000089 mounted in drive
LTO1DR7 (/dev 
                       /rmt7). (SESSION: 9801)

05/14/04 02:17:23     ANR0511I Session 9801 opened output volume 000089.
(SESSI 
                       ON: 9801)

05/14/04 02:53:00     ANR0514I Session 9801 closed volume 000089.
(SESSION: 980 
                       1)

05/14/04 02:54:05     ANR8336I Verifying label of LTO volume 000089 in
drive LT 
                       O1DR7 (/dev/rmt7). (SESSION: 9801)

05/14/04 02:54:55     ANR8468I LTO volume 000089 dismounted from drive
LTO1DR7  
                       (/dev/rmt7) in library LTOLIB1. (SESSION: 9801)

########################################################################
###########
05/14/04 02:52:40     ANR0984I Process 87 for MIGRATION started in the
BACKGROU 
                       ND at 02:52:40. (PROCESS: 87)

05/14/04 02:52:40     ANR1000I Migration process 87 started for storage
pool DI 
                       SKPOOL_AIX_CRIT. (PROCESS: 87)

05/14/04 02:53:34     ANR0513I Process 87 opened output volume 000124.
(PROCESS:
                       87)

05/14/04 02:54:22     ANR0515I Process 87 closed volume 000124.
(PROCESS: 87)    
########################################################################
##########

So it looks like I have several things happening together : 
1) my disk pool was full, and starded migrating data for that client on
a first tape
2) at the same time 2 different sessions where opened for the same
client, each of them using a different tape !

How can that be, as I defined "Maximum Mount Points Allowed: 1" for this
node ?  
As far as I know, this value should be honored independently of the
number of sessions/threads opened by the client, and even in the case of
a primary disk pool full condition, obliging data to be written on tape.
Has someone an explanation to this or does it look like a bug ?
Thanks for all info/pointers/advices ...

Arnaud 

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