194 lines
5.6 KiB
Bash
Executable File
194 lines
5.6 KiB
Bash
Executable File
#!/bin/bash
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#
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# Created by Sebastian Grewe, Jammicron Technology
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# Changes by Jasem Elayeb on 02.03.2016
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# Chagnes by Jonny007-MKD on 06.02.2020
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# JE: add Physical Disks Name RAID_DISKS
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# JE: add Physical Disks Status DISKS_STATUS
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# JE: add Array Names RAID_ARRAY
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# J007: Only check a single array
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if [ $# -lt 1 -o -z "$1" ]; then
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echo "ERROR: pass raid name as argument"
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exit 1;
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fi
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INPUT="/sys/block"
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DEBUG=false
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while [[ $# -gt 0 ]]; do
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case $1 in
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-r|--raid) TARGET_RAID_NAME="$2"; shift;;
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-i|--input) INPUT="$2"; shift;;
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-d|--debug) DEBUG=true;;
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-?|--help)
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echo "Check /proc/mdstat. Arguments:"
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echo "--raid NAME: Raid name, e.g. md0"
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echo "--input FILE: Read from this file. Default: /proc/mdstat"
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exit 0
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;;
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esac
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shift
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done
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if [ -z "$TARGET_RAID_NAME" ]; then
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echo "ERROR: pass --raid as argument"
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exit 255
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fi
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INPUT="$INPUT/$TARGET_RAID_NAME/md"
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if [ ! -d $INPUT ]; then
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echo "CRITICAL: RAID $TARGET_RAID_NAME not found in $INPUT"
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exit 2
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fi
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function log {
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if $DEBUG; then
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echo " > $@"
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fi
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}
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NL=$'\n'
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log "Reading from $INPUT"
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STATE= # string
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LEVEL= # int
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SIZE_IN_BLOCKS="!" # int
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CHUNK_SIZE_IN_BYTES= # size in bytes for chunks
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NUM_DEVICES=0 # int with total number of devices in raid
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NUM_ACTIVE_DEVICES=0 # int with number of active devices in raid
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NUM_SPARE_DEVICES=0 # int with number of spare devices in raid
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RECOVERY_PROGRESS= # float in percent
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RECOVERY_SPEED= # sync speed in K/s
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declare -A DEVICE_STATE # dict of strings. key = dev, value = state
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declare -A FAULTY_DEVICES # dict with only faulty devices. key = dev, value = true
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declare -A TO_REPLACE_DEVICES # dict of devices in raid that shall be replaced. key = dev, value = true
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function getDataFromSys {
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# https://mjmwired.net/kernel/Documentation/md.txt
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LEVEL=$(<$INPUT/level)
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NUM_DEVICES=$(<$INPUT/raid_disks)
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CHUNK_SIZE_IN_BYTES=$(<$INPUT/chunk_size)
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SIZE_IN_BLOCKS=$(<$INPUT/component_size)
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STATE=$(<$INPUT/array_state)
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RECOVERY_PROGRESS=$(<$INPUT/sync_completed)
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RECOVERY_SPEED=$(<$INPUT/sync_speed)
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log "LEVEL = $LEVEL"
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log "STATE = $STATE"
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log "CHUNK_SIZE_IN_BYTES = $CHUNK_SIZE_IN_BYTES"
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log "SIZE_IN_BLOCKS = $SIZE_IN_BLOCKS"
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log "RECOVERY_PROGRESS = $RECOVERY_PROGRESS"
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log "RECOVERY_SPEED = $RECOVERY_SPEED"
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for dev in `find $INPUT -type d -name 'dev-*' -printf "%f\n"`; do
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local deviceName=${dev:4}
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local slot=$(<$INPUT/$dev/slot)
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local state=$(<$INPUT/$dev/state)
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log "$dev [$slot] is '$state'"
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DEVICE_STATE[$deviceName]=$state
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case "$state" in
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*in_sync*) ((NUM_ACTIVE_DEVICES++));;
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*writemostly*) ((NUM_ACTIVE_DEVICES++));;
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*faulty*) FAULTY_DEVICES[$deviceName]=true;;
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*blocked*) FAULTY_DEVICES[$deviceName]=true;;
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*write-error*) TO_REPLACE_DEVICES[$deviceName]=true;;
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*want_replacement*) TO_REPLACE_DEVICES[$deviceName]=true;;
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*replacement*) ((NUM_SPARE_DEVICES++));;
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*spare*) ((NUM_SPARE_DEVICES++));;
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*) FAULTY_DEVICES[$deviceName]=true;;
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esac
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done
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log "NUM_DEVICES = $NUM_DEVICES"
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log "NUM_ACTIVE_DEVICES = $NUM_ACTIVE_DEVICES"
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log "NUM_SPARE_DEVICES = $NUM_SPARE_DEVICES"
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log "FAULTY_DEVICES = ${FAULTY_DEVICES[*]}"
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log "TO_REPLACE_DEVICES = ${TO_REPLACE_DEVICES[*]}"
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if [ "$RECOVERY_PROGRESS" != "none" ]; then
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RECOVERY_NUM=${RECOVERY_PROGRESS% /*}
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log "'$RECOVERY_NUM'"
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RECOVERY_DEN=${RECOVERY_PROGRESS#*/ }
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log "'$RECOVERY_DEN'"
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RECOVERY_PERCENT=$(($RECOVERY_NUM*100/$RECOVERY_DEN))
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BLOCK_SIZE=$(<$(dirname $INPUT)/queue/hw_sector_size)
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RECOVERY_REMAINING_S=$(( ($RECOVERY_DEN-$RECOVERY_NUM)*$BLOCK_SIZE/1024/$RECOVERY_SPEED))
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RECOVERY_REMAINING_MIN=$(($RECOVERY_REMAINING_S/60))
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fi
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}
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function printOutputAndExit {
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local result=""
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local info=""
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if [ $NUM_ACTIVE_DEVICES -lt $NUM_DEVICES ]; then
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result="CRITICAL"
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if [ -n "$info" ]; then info="$info. "; fi
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info="${info}Missing $(($NUM_DEVICES - $NUM_ACTIVE_DEVICES)) of $NUM_DEVICES devices"
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fi
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if [ ${#FAULTY_DEVICES[@]} -gt 0 ]; then
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result="CRITICAL"
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if [ -n "$info" ]; then info="$info. "; fi
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info="${info}These devices failed: ${!FAULTY_DEVICES[@]}"
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fi
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if [ ${#TO_REPLACE_DEVICES[@]} -gt 0 ]; then
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if [ -z "$result" ]; then result="WARNING"; fi
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if [ -n "$info" ]; then info="$info. "; fi
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info="${info}These devices should be replaced: ${!TO_REPLACE_DEVICES[@]}"
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fi
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if [ "$RECOVERY_PROGRESS" != "none" ]; then
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if [ -z "$result" ]; then result="WARNING"; fi
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if [ -n "$info" ]; then info="$info. "; fi
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info="${info}Recovering: $RECOVERY_PERCENT%, remaining ${RECOVERY_REMAINING_MIN}min"
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fi
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if [ -z "$result" ]; then result="OK"; fi
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echo -n "$result"
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if [ -n "$info" ]; then
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echo -n ": $info"
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fi
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echo -n " |"
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echo -n " 'raid level: $LEVEL'=0"
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echo -n " 'size in blocks'=$SIZE_IN_BLOCKS"
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echo -n " 'num devices'=$NUM_DEVICES"
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echo -n " 'num active devices'=$NUM_ACTIVE_DEVICES;;;0;$NUM_DEVICES"
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echo -n " 'num failed devices'=${#FAILED_DEVICES[@]};;1;0;$NUM_DEVICES"
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echo -n " 'num spare devices'=$NUM_SPARE_DEVICES;;;0"
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if [ "$RECOVERY_PROGRESS" != "none" ]; then
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if [ -z "$result" ]; then result="WARNING"; fi
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if [ -n "$info" ]; then info="$info. "; fi
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echo -n " 'recovery progress'=$RECOVERY_NUM;0;;0;$RECOVERY_DEN"
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echo -n " 'recovery speed [1/s]'=${RECOVERY_SPEED}K"
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echo -n " 'recovery remaining'=${RECOVERY_REMAINING_S}s"
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fi
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for dev in ${!DEVICE_STATE[@]}; do
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echo -n " 'dev $dev: ${DEVICE_STATE[$dev]}"
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if [ -n "${FAULTY_DEVICE[$dev]}" ]; then
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echo -n " faulty"
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fi
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if [ -n "${TO_REPLACE_DEVICE[$dev]}" ]; then
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echo -n " wants replacement"
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fi
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echo -n "'=0"
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done
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echo
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case $result in
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OK) exit 0;;
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WARNING) exit 1;;
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CRITICAL) exit 2;;
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esac
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}
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getDataFromSys
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printOutputAndExit
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