NSS - DIRECT IO Support - Query

Team,

I am new to Novell OES usage.

My configuration: SLES 11 SP2 + OES 11 SP1

I created NSS Pools & volumes:

bl480g-196-167:~ # df
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/cciss/c0d0p2 68455984 4761396 62651368 8% /
udev 4029532 516 4029016 1% /dev
tmpfs 4029532 264 4029268 1% /dev/shm
admin 4096 0 4096 0% /_admin
/dev/pool/POOL_167 83843072 3492432 80350640 5% /opt/novell/nss/mnt/.pools/POOL_167
167_VOL1 83843072 820776 80350640 2% /media/nss/167_VOL1
167_VOL2 83843072 818140 80350640 2% /media/nss/167_VOL2
167_VOL3 83843072 776684 80350640 1% /media/nss/167_VOL3
167_VOL4 83843072 812016 80350640 2% /media/nss/167_VOL4


Issue: Now i attempt to run dt tool (Direct IO option) as test run. The test fails & dt fails to write.
without direct io flag, dt tool run is working.

I read Novell Support Doc ID: 7001517 & understand there's an option to enable/disable Direct IO to file/volume.



Question: Can you suggest how can i toggle DIO & non DIO? Procedure please.

arun