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46 lines
1.0 KiB
46 lines
1.0 KiB
12 months ago
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#!/bin/bash
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# Author: Steve Barnes (steve@echo.id.au)
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# A simple iostat test to verify transfers are being recorded
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t_Log "Running $0 - a basic iostat test to verify disk measurement"
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output_file=$(mktemp)
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trap "rm -f ${output_file}" EXIT
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# dd options
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bs=4196
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count=10100
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sum=$(expr $bs \* $count / 1024)
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# Clear out the pagecache to get an accurate reading
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echo 1 > /proc/sys/vm/drop_caches
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# Capture a storage device name
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drive=$(fdisk -l|grep -Po -m1 '^/dev/[\D]+')
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# Run iostat on the device
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/usr/bin/iostat -d 1 5 $drive >${output_file} 2>&1 &
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# Time for iostat booting
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sleep 1
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# Generate some read traffic
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/bin/dd if=$drive of=/dev/null bs=$bs count=$count &>/dev/null
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# Give iostat a chance to log our traffic
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sleep 6
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# Confirm our read bytes are >0, excluding the first
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# line since that's the average since boot.
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kbytes_read=$(awk '$6 ~ /[0-9]/ {NR>1 && sum+=$6} END {print int(sum)}' ${output_file})
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if [ "$kbytes_read" -eq 0 ]; then
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t_Log "FAIL: ${0}: no io activity registered"
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cat ${output_file}
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t_CheckExitStatus 1
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fi
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t_CheckExitStatus 0
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