2026-03-12 20:23:15
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vdh/asmiostat.scriptje
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245
vdh/asmiostat.scriptje
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#!/bin/ksh
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#
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# NAME
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# asmiostat.sh
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#
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# DESCRIPTION
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# iostat-like output for ASM
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# $ asmiostat.sh [-s ASM ORACLE_SID] [-h ASM ORACLE_HOME] [-g Diskgroup]
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# [-f disk path filter] [<interval>] [<count>]
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#
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# NOTES
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# Creates persistent SQL*Plus connection to the +ASM instance implemented
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# as a ksh co-process
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#
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# AUTHOR
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# Doug Utzig
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#
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# MODIFIED
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# dutzig 08/18/05 - original version
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#
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ORACLE_SID=+ASM
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NLS_LANG=AMERICAN_AMERICA.WE8ISO8859P1
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NLS_DATE_FORMAT='DD-MON-YYYY HH24:MI:SS'
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endOfOutput="_EOP$$"
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typeset -u diskgroup
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typeset diskgroup_string="Disk Group: All diskgroups"
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typeset usage="
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$0 [-s ASM ORACLE_SID] [-h ASM ORACLE_HOME] [-g diskgroup] [<interval>] [<count>]
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Output:
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DiskPath - Path to ASM disk
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DiskName - ASM disk name
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Gr - ASM disk group number
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Dsk - ASM disk number
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Reads - Reads
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Writes - Writes
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AvRdTm - Average read time (in msec)
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AvWrTm - Average write time (in msec)
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KBRd - Kilobytes read
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KBWr - Kilobytes written
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AvRdSz - Average read size (in bytes)
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AvWrSz - Average write size (in bytes)
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RdEr - Read errors
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WrEr - Write errors
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"
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while getopts ":s:h:g:f" option; do
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case $option in
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s) ORACLE_SID="$OPTARG" ;;
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h) ORACLE_HOME="$OPTARG"
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LD_LIBRARY_PATH=$ORACLE_HOME/lib:$LD_LIBRARY_PATH ;;
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g) diskgroup="$OPTARG"
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diskgroup_string="Disk Group: $diskgroup" ;;
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f) print '-f option not implemented' ;;
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:) print "Option $OPTARG needs a value"
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print "$usage"
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exit 1 ;;
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\?) print "Invalid option $OPTARG"
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print "$usage"
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exit 1 ;;
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esac
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done
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shift OPTIND-1
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typeset -i interval=${1:-10} count=${2:-0} index=0
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#
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# Verify interval and count arguments are valid
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#
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(( interval <=0 || count<0 )) && {
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print 'Invalid parameter: <interval> must be > 0; <count> must be >= 0'
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print "$usage"
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exit 1
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}
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#
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# Query to run against v$asm_disk_stat
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#
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if [[ -z $diskgroup ]]; then
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query="select group_number, disk_number, name, path, reads, writes, read_errs, write_errs, read_time, write_time, bytes_read, bytes_written from v\$asm_disk_stat where group_number>0 order by group_number, disk_number;"
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else
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query="select group_number, disk_number, name, path, reads, writes, read_errs, write_errs, read_time, write_time, bytes_read, bytes_written from v\$asm_disk_stat where group_number=(select group_number from v\$asm_diskgroup_stat where name=regexp_replace('$diskgroup','^\+','')) order by group_number, disk_number;"
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fi
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#
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# Check for version 10.2 or later
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#
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typeset version minversion=10.2
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version=$($ORACLE_HOME/bin/exp </dev/null 2>&1 | grep "Export: " | sed -e 's/^Export: Release \([0-9][0-9]*\.[0-9][0-9]*\).*/\1/')
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if ! (print "$version<$minversion" | bc >/dev/null 2>&1); then
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print "$0 requires Oracle Database Release $minversion or later"
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exit 1
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fi
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#############################################################################
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#
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# Fatal error
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#----------------------------------------------------------------------------
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function fatalError {
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print -u2 -- "Error: $1"
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exit 1
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}
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#############################################################################
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#
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# Drain all of the sqlplus output - stop when we see our well known string
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#----------------------------------------------------------------------------
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function drainOutput {
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typeset dispose=${1:-'dispose'} output
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while :; do
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read -p output || fatalError 'Read from co-process failed [$0]'
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if [[ $QUERYDEBUG == ON ]]; then print $output; fi
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if [[ $output == $endOfOutput* ]]; then break; fi
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[[ $dispose != 'dispose' ]] && print -- $output
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done
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}
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#############################################################################
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#
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# Ensure the instance is running and it is of type ASM
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#----------------------------------------------------------------------------
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function verifyASMinstance {
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typeset asmcmdPath=$ORACLE_HOME/bin/asmcmd
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[[ ! -x $asmcmdPath ]] && fatalError "Invalid ORACLE_HOME $ORACLE_HOME: $asmcmdPath does not exist"
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$asmcmdPath pwd 2>/dev/null | grep -q '^\+$' || fatalError "$ORACLE_SID is not an ASM instance"
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}
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#############################################################################
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#
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# Start the sqlplus coprocess
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#----------------------------------------------------------------------------
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function startSqlplus {
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# start sqlplus, setup the env
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$ORACLE_HOME/bin/sqlplus -s '/ as sysdba' |&
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print -p 'whenever sqlerror exit failure' \
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&& print -p "set pagesize 9999 linesize 9999 feedback off heading off" \
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&& print -p "prompt $endOfOutput" \
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|| fatalError 'Write to co-process failed (startSqlplus)'
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drainOutput dispose
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}
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#############################################################################
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#############################################################################
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# MAIN
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#----------------------------------------------------------------------------
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verifyASMinstance
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startSqlplus
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#
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# Loop as many times as requested or forever
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#
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while :; do
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print -p "$query" \
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&& print -p "prompt $endOfOutput" \
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|| fatalError 'Write to co-process failed (collectData)'
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stats=$(drainOutput keep)
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print -- "$stats\nEOL"
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index=index+1
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(( count<index && count>0 )) && break
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sleep $interval
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done | \
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awk '
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BEGIN { firstSample=1
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}
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/^EOL$/ {
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firstSample=0; firstLine=1
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next
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}
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{
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path=$4
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if (path ~ /^ *$/) next
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group[path]=$1; disk[path]=$2; name[path]=$3
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reads[path]=$5; writes[path]=$6
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readErrors[path]=$7; writeErrors[path]=$8
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readTime[path]=$9; writeTime[path]=$10
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readBytes[path]=$11; writeBytes[path]=$12
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# reads and writes
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readsDiff[path]=reads[path]-readsPrev[path]
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writesDiff[path]=writes[path]-writesPrev[path]
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# read errors and write errors
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readErrorsDiff[path]=readErrors[path]-readErrorsPrev[path]
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writeErrorsDiff[path]=writeErrors[path]-writeErrorsPrev[path]
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# read time and write time
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readTimeDiff[path]=readTime[path]-readTimePrev[path]
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writeTimeDiff[path]=writeTime[path]-writeTimePrev[path]
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# average read time and average write time in msec (data provided in csec)
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avgReadTime[path]=0; avgWriteTime[path]=0
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if ( readsDiff[path] ) avgReadTime[path]=(readTimeDiff[path]/readsDiff[path])*1000
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if ( writesDiff[path]) avgWriteTime[path]=(writeTimeDiff[path]/writesDiff[path])*1000
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# bytes and KB read and bytes and KB written
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readBytesDiff[path]=readBytes[path]-readBytesPrev[path]
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writeBytesDiff[path]=writeBytes[path]-writeBytesPrev[path]
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readKb[path]=readBytesDiff[path]/1024
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writeKb[path]=writeBytesDiff[path]/1024
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# average read size and average write size
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avgReadSize[path]=0; avgWriteSize[path]=0
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if ( readsDiff[path] ) avgReadSize[path]=readBytesDiff[path]/readsDiff[path]
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if ( writesDiff[path] ) avgWriteSize[path]=writeBytesDiff[path]/writesDiff[path]
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if (!firstSample) {
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if (firstLine) {
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"date" | getline now; close("date")
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printf "\n"
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printf "Date: %s Interval: %d secs %s\n\n", now, '"$interval"', "'"$diskgroup_string"'"
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printf "%-40s %2s %3s %8s %8s %6s %6s %8s %8s %7s %7s %4s %4s\n", \
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"DiskPath - DiskName","Gr","Dsk","Reads","Writes","AvRdTm",\
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"AvWrTm","KBRd","KBWr","AvRdSz","AvWrSz", "RdEr", "WrEr"
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firstLine=0
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}
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printf "%-40s %2s %3s %8d %8d %6.1f %6.1f %8d %8d %7d %7d %4d %4d\n", \
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path " - " name[path], group[path], disk[path], \
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readsDiff[path], writesDiff[path], \
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avgReadTime[path], avgWriteTime[path], \
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readKb[path], writeKb[path], \
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avgReadSize[path], avgWriteSize[path], \
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readErrorsDiff[path], writeErrorsDiff[path]
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}
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readsPrev[path]=reads[path]; writesPrev[path]=writes[path]
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readErrorsPrev[path]=readErrors[path]; writeErrorsPrev[path]=writeErrors[path]
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readTimePrev[path]=readTime[path]; writeTimePrev[path]=writeTime[path]
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readBytesPrev[path]=readBytes[path]; writeBytesPrev[path]=writeBytes[path]
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}
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END {
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}
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'
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exit 0
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