Change Hitachi disk attribute using shell script on multiple disk on AIX Lpar

 Script:

Step 1 : create list of server on where u wanted to change disk parameter, create this file

on NIM server from where pass wordless ssh is working.

Example

#vi list

test1

test2

test3

test4

test5

:wq

step 2:

Create script to login on each AIX LPAR using following script:

===========================

for i in `cat list`

do

ssh $i

done

===========================

Above script will connect to each server once you sure that you are host where Hitachi disk 

parameter need to change, execute following script.

=======================================================

for i in `lsdev -c disk |grep -i Hitachi |awk '{print $1}'`

do

echo $i

chdev -Pl $i -a hcheck_interval=90 -a timeout_policy=fail_path

done

==============================================================

Once above script executed check parameter changed or not by following script

for i in `lsdev -c disk |grep -i Hitachi |awk '{print $1}'`

do

echo $i

lsattr -El $i -a hcheck_interval,timeout_policy -F attribute=value |xargs

done

Once done type "exit" on AIX LPAR ,then it will prompt for next AIX LPAR.

This way AIX admin can interactively change disk parameter on AIX LPAR

Thanks :)