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#!/bin/bash
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#
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# Calomel.org
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# https://calomel.org/megacli_lsi_commands.html
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# LSI MegaRaid CLI
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# lsi.sh @ Version 0.05
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#
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# description: MegaCLI script to configure and monitor LSI raid cards.
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# Full path to the MegaRaid CLI binary
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MegaCli="megacli"
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# The identifying number of the enclosure. Default for our systems is "8". Use
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# "MegaCli64 -PDlist -a0 | grep "Enclosure Device"" to see what your number
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# is and set this variable.
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ENCLOSURE="8"
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if [ $# -eq 0 ]
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then
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echo ""
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echo " OBPG .:. lsi.sh $arg1 $arg2"
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echo "-----------------------------------------------------"
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echo "status = Status of Virtual drives (volumes)"
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echo "drives = Status of hard drives"
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echo "ident \$slot = Blink light on drive (need slot number)"
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echo "good \$slot = Simply makes the slot \"Unconfigured(good)\" (need slot number)"
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echo "replace \$slot = Replace \"Unconfigured(bad)\" drive (need slot number)"
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echo "progress = Status of drive rebuild"
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echo "errors = Show drive errors which are non-zero"
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echo "bat = Battery health and capacity"
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echo "batrelearn = Force BBU re-learn cycle"
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echo "logs = Print card logs"
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echo "checkNemail \$email = Check volume(s) and send email on raid errors"
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echo "allinfo = Print out all settings and information about the card"
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echo "settime = Set the raid card's time to the current system time"
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echo "setdefaults = Set preferred default settings for new raid setup"
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echo ""
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exit
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fi
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# General status of all RAID virtual disks or volumes and if PATROL disk check
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# is running.
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if [ $1 = "status" ]
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then
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$MegaCli -LDInfo -Lall -aALL -NoLog
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echo "###############################################"
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$MegaCli -AdpPR -Info -aALL -NoLog
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echo "###############################################"
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$MegaCli -LDCC -ShowProg -LALL -aALL -NoLog
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exit
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fi
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# Shows the state of all drives and if they are online, unconfigured or missing.
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if [ $1 = "drives" ]
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then
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$MegaCli -PDlist -aALL -NoLog | egrep 'Slot|state' | awk '/Slot/{if (x)print x;x="";}{x=(!x)?$0:x" -"$0;}END{print x;}' | sed 's/Firmware state://g'
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exit
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fi
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# Use to blink the light on the slot in question. Hit enter again to turn the blinking light off.
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if [ $1 = "ident" ]
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then
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$MegaCli -PdLocate -start -physdrv[$ENCLOSURE:$2] -a0 -NoLog
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logger "`hostname` - identifying enclosure $ENCLOSURE, drive $2 "
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read -p "Press [Enter] key to turn off light..."
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$MegaCli -PdLocate -stop -physdrv[$ENCLOSURE:$2] -a0 -NoLog
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exit
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fi
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# When a new drive is inserted it might have old RAID headers on it. This
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# method simply removes old RAID configs from the drive in the slot and make
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# the drive "good." Basically, Unconfigured(bad) to Unconfigured(good). We use
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# this method on our FreeBSD ZFS machines before the drive is added back into
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# the zfs pool.
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if [ $1 = "good" ]
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then
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# set Unconfigured(bad) to Unconfigured(good)
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$MegaCli -PDMakeGood -PhysDrv[$ENCLOSURE:$2] -a0 -NoLog
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# clear 'Foreign' flag or invalid raid header on replacement drive
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$MegaCli -CfgForeign -Clear -aALL -NoLog
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exit
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fi
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# Use to diagnose bad drives. When no errors are shown only the slot numbers
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# will print out. If a drive(s) has an error you will see the number of errors
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# under the slot number. At this point you can decided to replace the flaky
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# drive. Bad drives might not fail right away and will slow down your raid with
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# read/write retries or corrupt data.
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if [ $1 = "errors" ]
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then
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echo "Slot Number: 0"; $MegaCli -PDlist -aALL -NoLog | egrep -i 'error|fail|slot' | egrep -v '0'
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exit
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fi
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# status of the battery and the amount of charge. Without a working Battery
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# Backup Unit (BBU) most of the LSI read/write caching will be disabled
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# automatically. You want caching for speed so make sure the battery is ok.
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if [ $1 = "bat" ]
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then
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$MegaCli -AdpBbuCmd -aAll -NoLog
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exit
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fi
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# Force a Battery Backup Unit (BBU) re-learn cycle. This will discharge the
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# lithium BBU unit and recharge it. This check might take a few hours and you
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# will want to always run this in off hours. LSI suggests a battery relearn
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# monthly or so. We actually run it every three(3) months by way of a cron job.
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# Understand if your "Current Cache Policy" is set to "No Write Cache if Bad
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# BBU" then write-cache will be disabled during this check. This means writes
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# to the raid will be VERY slow at about 1/10th normal speed. NOTE: if the
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# battery is new (new bats should charge for a few hours before they register)
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# or if the BBU comes up and says it has no charge try powering off the machine
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# and restart it. This will force the LSI card to re-evaluate the BBU. Silly
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# but it works.
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if [ $1 = "batrelearn" ]
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then
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$MegaCli -AdpBbuCmd -BbuLearn -aALL -NoLog
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exit
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fi
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# Use to replace a drive. You need the slot number and may want to use the
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# "drives" method to show which drive in a slot is "Unconfigured(bad)". Once
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# the new drive is in the slot and spun up this method will bring the drive
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# online, clear any foreign raid headers from the replacement drive and set the
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# drive as a hot spare. We will also tell the card to start rebuilding if it
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# does not start automatically. The raid should start rebuilding right away
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# either way. NOTE: if you pass a slot number which is already part of the raid
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# by mistake the LSI raid card is smart enough to just error out and _NOT_
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# destroy the raid drive, thankfully.
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if [ $1 = "replace" ]
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then
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logger "`hostname` - REPLACE enclosure $ENCLOSURE, drive $2 "
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# set Unconfigured(bad) to Unconfigured(good)
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$MegaCli -PDMakeGood -PhysDrv[$ENCLOSURE:$2] -a0 -NoLog
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# clear 'Foreign' flag or invalid raid header on replacement drive
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$MegaCli -CfgForeign -Clear -aALL -NoLog
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# set drive as hot spare
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$MegaCli -PDHSP -Set -PhysDrv [$ENCLOSURE:$2] -a0 -NoLog
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# show rebuild progress on replacement drive just to make sure it starts
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$MegaCli -PDRbld -ShowProg -PhysDrv [$ENCLOSURE:$2] -a0 -NoLog
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exit
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fi
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# Print all the logs from the LSI raid card. You can grep on the output.
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if [ $1 = "logs" ]
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then
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$MegaCli -FwTermLog -Dsply -aALL -NoLog
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exit
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fi
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# Use to query the RAID card and find the drive which is rebuilding. The script
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# will then query the rebuilding drive to see what percentage it is rebuilt and
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# how much time it has taken so far. You can then guess-ti-mate the
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# completion time.
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if [ $1 = "progress" ]
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then
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DRIVE=`$MegaCli -PDlist -aALL -NoLog | egrep 'Slot|state' | awk '/Slot/{if (x)print x;x="";}{x=(!x)?$0:x" -"$0;}END{print x;}' | sed 's/Firmware state://g' | egrep build | awk '{print $3}'`
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$MegaCli -PDRbld -ShowProg -PhysDrv [$ENCLOSURE:$DRIVE] -a0 -NoLog
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exit
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fi
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# Use to check the status of the raid. If the raid is degraded or faulty the
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# script will send email to the address in the $EMAIL variable. We normally add
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# this method to a cron job to be run every few hours so we are notified of any
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# issues.
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if [ $1 = "checkNemail" ]
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then
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EMAIL="$2"
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# Check if raid is in good condition
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STATUS=`$MegaCli -LDInfo -Lall -aALL -NoLog | egrep -i 'fail|degrad|error'`
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# On bad raid status send email with basic drive information
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if [ "$STATUS" ]; then
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$MegaCli -PDlist -aALL -NoLog | egrep 'Slot|state' | awk '/Slot/{if (x)print x;x="";}{x=(!x)?$0:x" -"$0;}END{print x;}' | sed 's/Firmware state://g' | mail -s `hostname`' - RAID Notification' $EMAIL
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fi
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fi
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# Use to print all information about the LSI raid card. Check default options,
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# firmware version (FW Package Build), battery back-up unit presence, installed
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# cache memory and the capabilities of the adapter. Pipe to grep to find the
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# term you need.
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if [ $1 = "allinfo" ]
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then
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$MegaCli -AdpAllInfo -aAll -NoLog
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exit
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fi
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# Update the LSI card's time with the current operating system time. You may
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# want to setup a cron job to call this method once a day or whenever you
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# think the raid card's time might drift too much.
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if [ $1 = "settime" ]
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then
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$MegaCli -AdpGetTime -aALL -NoLog
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$MegaCli -AdpSetTime `date +%Y%m%d` `date +%H:%M:%S` -aALL -NoLog
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$MegaCli -AdpGetTime -aALL -NoLog
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exit
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fi
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# These are the defaults we like to use on the hundreds of raids we manage. You
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# will want to go through each option here and make sure you want to use them
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# too. These options are for speed optimization, build rate tweaks and PATROL
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# options. When setting up a new machine we simply execute the "setdefaults"
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# method and the raid is configured. You can use this on live raids too.
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if [ $1 = "setdefaults" ]
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then
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# Read Cache enabled specifies that all reads are buffered in cache memory.
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$MegaCli -LDSetProp -Cached -LAll -aAll -NoLog
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# Adaptive Read-Ahead if the controller receives several requests to sequential sectors
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$MegaCli -LDSetProp ADRA -LALL -aALL -NoLog
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# Hard Disk cache policy enabled allowing the drive to use internal caching too
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$MegaCli -LDSetProp EnDskCache -LAll -aAll -NoLog
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# Write-Back cache enabled
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$MegaCli -LDSetProp WB -LALL -aALL -NoLog
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# Continue booting with data stuck in cache. Set Boot with Pinned Cache Enabled.
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$MegaCli -AdpSetProp -BootWithPinnedCache -1 -aALL -NoLog
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# PATROL run every 672 hours or monthly (RAID6 77TB @60% rebuild takes 21 hours)
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$MegaCli -AdpPR -SetDelay 672 -aALL -NoLog
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# Check Consistency every 672 hours or monthly
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$MegaCli -AdpCcSched -SetDelay 672 -aALL -NoLog
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# Enable autobuild when a new Unconfigured(good) drive is inserted or set to hot spare
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$MegaCli -AdpAutoRbld -Enbl -a0 -NoLog
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# RAID rebuild rate to 60% (build quick before another failure)
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$MegaCli -AdpSetProp \{RebuildRate -60\} -aALL -NoLog
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# RAID check consistency rate to 60% (fast parity checks)
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$MegaCli -AdpSetProp \{CCRate -60\} -aALL -NoLog
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# Enable Native Command Queue (NCQ) on all drives
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$MegaCli -AdpSetProp NCQEnbl -aAll -NoLog
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# Sound alarm disabled (server room is too loud anyways)
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$MegaCli -AdpSetProp AlarmDsbl -aALL -NoLog
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# Use write-back cache mode even if BBU is bad. Make sure your machine is on UPS too.
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$MegaCli -LDSetProp CachedBadBBU -LAll -aAll -NoLog
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# Disable auto learn BBU check which can severely affect raid speeds
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OUTBBU=$(mktemp /tmp/output.XXXXXXXXXX)
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echo "autoLearnMode=1" > $OUTBBU
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$MegaCli -AdpBbuCmd -SetBbuProperties -f $OUTBBU -a0 -NoLog
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rm -rf $OUTBBU
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exit
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fi
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### EOF ###
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