Write below mentioned code in SHELL:
Automatically reboot on high iowait stat
Quote
# top -C -b -n 1 -i |awk '/total/ && substr($7, 0, index($7,".")) >70{print "/sbin/reboot"}'|sh
Awk displays "/sbin/reboot", if IOWAIT > 70 % and shell runs the command
you can run that in root's cron or include it via a shell script.
-C = combines statistics on a SMP machine into 1 line
-n 1 = display once
-i = ignore zombie/waiting processes
This how to is derived from Ev1servers forum
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