iostat - monitoring disk activity

[ereshatezer]

Hello,

I need an urgent help. I should write a script which monitors disk activity frequently and creat a mail when it is over 90%.

Could anyone help now?

Thank you in advance.

 

[ogniemi]

try nmon - free tool....

http://www-106.ibm.com/developerworks/eserver/articles/analyze_aix/

http://www-106.ibm.com/developerworks/eserver/articles/nmon_analyser/index.html

The nmon tool is designed for AIX and IBM eServer pSeries performance specialists to use for analyzing AIX performance data, including the following:

CPU utilisation
Memory use
Kernel statistics and run queue information
Disks I/O rates, transfers, and read/write ratios
Free space on file systems
Disk adapters
Network I/O rates, transfers, and read/write ratios
Paging space and paging rates
CPU and AIX specification
Top processors
IBM HTTP web cache
User defined disk groups
Machine details and resources
Async I/O
Workload Manager
ESS disks
NFS
Dynamic LPAR changes

 

[guitarguy]

I'm with ogniemi, I use nmon for almost all of my servers, but I kick it off a midnight and then dump the data to a mysql database. Then of course use perl and gnuplot to make purty graphs for management.

nmon rocks!

 

[ereshatezer]

Thank you. I know nmon.
I meant to a shell script which monitors my disk with iostat for example.....

something like this:
----------------------
#! /bin/ksh

TEMPFILE=blablabla.txt
TEMPFILE2=blablabla2.txt
TEMPFILE3=blablabla3.txt
DAY=`date +"%D %T %Z"`

iostat -d 2 10|grep hdisk|awk '{print $1 " "$2"%"}'> $TEMPFILE

cat $TEMPFILE|sed s/%//g|awk ' $2 > 90 { print $1,".........." $2"%"}' > $TEMPFILE2

ls -ltr $TEMPFILE2|awk '{print$5}'> $TEMPFILE3

if [ $(cat $TEMPFILE3 |head -1) -ne 0 ]
then
mail -s "*Disk activity more than 90% on `hostname` at: $DAY *" bla.bla@blabla.com < $TEMPFILE2
fi

rm $TEMPFILE
rm $TEMPFILE2
rm $TEMPFILE3
---------------------

I wrote it and scheduled in the crontab.....

I know it is very basic, but it works fine.