scripts/zpoolspeedcheck

#!/bin/sh -

#echo start

readsize=512

for i in $( zpool list -v ztank | awk '$1 ~ /^label\// { print $1 }' ); do
	barename="${i%.eli}"
	i=/dev/${barename}
	disksizemb=$(diskinfo "$i" | awk '{ print int($3 / 1024 / 1024) }')
	#echo -n $i
	inner=$(dd if="$i" bs=1m count="$readsize" of=/dev/null 2>&1 | awk 'END { print substr($7, 2) / 1024 / 1024 }')
	middle=$(dd if="$i" bs=1m count="$readsize" iseek=$(($disksizemb / 2)) of=/dev/null 2>&1 | awk 'END { print substr($7, 2) / 1024 / 1024 }')
	outer=$(dd if="$i" bs=1m count="$readsize" iseek=$(($disksizemb - "$readsize")) of=/dev/null 2>&1 | awk 'END { print substr($7, 2) / 1024 / 1024 }')
	printf "%s\t%s\t%s\t%s\n" ${barename} $inner $middle $outer
done
#echo end