====== Megaraid ======

https://hwraid.le-vert.net/wiki/DebianPackages
<code bash>
wget -O - https://hwraid.le-vert.net/debian/hwraid.le-vert.net.gpg.key | apt-key add -
echo "" >> /etc/apt/sources.list
echo "# hwraidle-vert.net raid hardwares management tools" >> /etc/apt/sources.list
echo "deb http://hwraid.le-vert.net/debian jessie main" >> /etc/apt/sources.list
apt-get update
apt-get install megaraid-status megacli
</code>
[[https://hwraid.le-vert.net/wiki/LSIMegaRAIDSAS|LSIMegaRAIDSAS]]
<code bash>
megaraidsas-status
megasasctl
megacli -AdpBbuCmd -GetBbuStatus -a0 
megacli -LDInfo -L0 -a0
megacli -LDInfo -L1 -a0
megacli -LDInfo -Lall -aall
megacli -AdpAllInfo -aall
megacli -PDList -aall | less
</code>
===== disable disk cache =====
<code bash>
megacli -LDSetProp DisDskCache -LAll -aAll
</code>
===== enable disk cache =====
<code bash>
megacli -LDSetProp EnDskCache -LAll -aAll
</code>
===== view cache policy =====
<code bash>
megacli -LDInfo -Lall -aAll | grep 'Cache Policy:'
</code>
===== disable RAID cache (WriteThrough) =====
<code bash>
megacli -LDSetProp WT -LALL -aALL
</code>
===== enable RAID cache (WriteBack) =====
<code bash>
megacli -LDSetProp WB -LALL -aALL
</code>







Depuis https://community.cisco.com/t5/security-knowledge-base/megacli-common-commands-and-procedures/ta-p/3114544 ::










Introduction

MegaCli commands have presented a number of questions among our users for Cisco's Physical Security.  Here is an attempt to explain thier meaning and uses.

See also: Cisco VSM RAID Viewer
General Parameters

    Adapter parameter -aN

The parameter -aN (where N is a number starting with zero or the string ALL) specifies the adapter ID. If you have only one controller it’s safe to use ALL instead of a specific ID, but you’re encouraged to use the ID for everything that makes changes to your RAID configuration.

    Physical drive parameter      -PhysDrv [E:S]

For commands that operate on one or more pysical drives, the -PhysDrv [E:S] parameter is used, where E is the enclosure device ID in which the drive resides and S the slot number (starting with zero). You can get the enclosure device ID using MegaCli -EncInfo -aALL. The E:S syntax is also used for specifying the physical drives when creating a new RAID virtual drive (see 5).

    Virtual drive parameter -Lx

The parameter -Lx is used for specifying the virtual drive (where x is a number starting with zero or the string all).

Running the executable can be accomplished by:

shell> /opt/MegaRAID/MegaCli/MegaCli <cmd>

or

shell> cd /opt/MegaRAID/MegaCli

shell> ./MegaCli <cmd>

Gather information

    Controller information

     MegaCli -AdpAllInfo -aALL

     MegaCli -CfgDsply -aALL

     MegaCli -adpeventlog -getevents -f lsi-events.log -a0 -nolog

    Enclosure information

     MegaCli -EncInfo -aALL

    Virtual drive information

     MegaCli -LDInfo -Lall -aALL

    Physical drive information

     MegaCli -PDList -aALL

     MegaCli -PDInfo -PhysDrv [E:S] -aALL

    Battery backup information      (Cisco MSPs do not have the battery backup unit installed, but in case yours has one)

     MegaCli -AdpBbuCmd -aALL 

    Check Battery backup warning on boot.  If this is enabled on an MSP, it will require manual intervention every time the system boots

     MegaCli -AdpGetProp BatWarnDsbl -a0 

Controller management

    Silence active alarm

     MegaCli -AdpSetProp AlarmSilence -aALL

    Disable alarm

     MegaCli -AdpSetProp AlarmDsbl -aALL

    Enable alarm

     MegaCli -AdpSetProp AlarmEnbl -aALL 

    Disable battery backup warning on system boot

     MegaCli -AdpSetProp BatWarnDsbl -a0

    Change the adapter rebuild rate to 60%:

     MegaCli -AdpSetProp {RebuildRate -60} -aALL

Virtual drive management

    Create RAID 0, 1, 5 drive

     MegaCli -CfgLdAdd -r(0|1|5) [E:S, E:S, ...] -aN

    Create RAID 10 drive

     MegaCli -CfgSpanAdd -r10 -Array0[E:S,E:S] -Array1[E:S,E:S] -aN

    Remove drive

     MegaCli -CfgLdDel -Lx -aN 

Physical drive management

    Set state to offline

     MegaCli -PDOffline -PhysDrv [E:S] -aN

    Set state to online

     MegaCli -PDOnline -PhysDrv [E:S] -aN

    Mark as missing

     MegaCli -PDMarkMissing -PhysDrv [E:S] -aN

    Prepare for removal

     MegaCli -PdPrpRmv -PhysDrv [E:S] -aN

    Replace missing drive

     MegaCli -PdReplaceMissing -PhysDrv [E:S] -ArrayN -rowN -aN

The number N of the Array parameter is from the "Span Reference:" line you get using MegaCli -CfgDsply -aALL, minus the 0x0 part.  For VSM systems it's normally 0.  The number N of the row parameter is the Physical Disk in that span or array starting with zero (it can be but is not always the physical disk’s slot!).

    Rebuild drive - Drive status should be "Firmware state: Rebuild"

     MegaCli -PDRbld -Start -PhysDrv [E:S] -aN

     MegaCli -PDRbld -Stop -PhysDrv [E:S] -aN

     MegaCli -PDRbld -ShowProg -PhysDrv [E:S] -aN     
     MegaCli -PDRbld -ProgDsply -physdrv [E:S] -aN

    Clear drive

     MegaCli -PDClear -Start -PhysDrv [E:S] -aN

     MegaCli -PDClear -Stop -PhysDrv [E:S] -aN

     MegaCli -PDClear -ShowProg -PhysDrv [E:S] -aN

    Bad to good

     MegaCli -PDMakeGood -PhysDrv[E:S] -aN

     Changes drive in state Unconfigured-Bad to Unconfigured-Good.
Hot spare management

    Set global hot spare

     MegaCli -PDHSP -Set -PhysDrv [E:S] -aN

    Remove hot spare

     MegaCli -PDHSP -Rmv -PhysDrv [E:S] -aN

    Set dedicated hot spare

     MegaCli -PDHSP -Set -Dedicated -ArrayN,M,... -PhysDrv [E:S] -aN 

Walkthrough: Rebuild a Drive that is marked 'Foreign' when Inserted:

    Bad to good

    MegaCli -PDMakeGood -PhysDrv [E:S]  -aALL

    Clear the foreign setting

     MegaCli -CfgForeign -Clear -aALL

    Set global hot spare

     MegaCli -PDHSP -Set -PhysDrv [E:S] -aN

Walkthrough: Change/replace a drive

1. Set the drive offline, if it is not already offline due to an error

     MegaCli -PDOffline -PhysDrv [E:S] -aN

2. Mark the drive as missing

     MegaCli -PDMarkMissing -PhysDrv [E:S] -aN

3. Prepare drive for removal

     MegaCli -PDPrpRmv -PhysDrv [E:S] -aN

4. Change/replace the drive

5. If you’re using hot spares then the replaced drive should become your new hot spare drive

     MegaCli -PDHSP -Set -PhysDrv [E:S] -aN

6. In case you’re not working with hot spares, you must re-add the new drive to your RAID virtual drive and start the rebuilding

     MegaCli -PdReplaceMissing -PhysDrv [E:S] -ArrayN -rowN -aN

     MegaCli -PDRbld -Start -PhysDrv [E:S] -aN

Gathering Standard logs

On every instance of a hard drive problem with an MSP server, we need to run the following commands to have any information about the problem:

   shell> rm –f MegaSAS.log

   shell> /opt/MegaRAID/MegaCli/MegaCli -adpallinfo -a0

   shell> /opt/MegaRAID/MegaCli/MegaCli -encinfo -a0

   shell> /opt/MegaRAID/MegaCli/MegaCli -ldinfo -lall -a0

   shell> /opt/MegaRAID/MegaCli/MegaCli -pdlist -a0

   shell> /opt/MegaRAID/MegaCli/MegaCli -adpeventlog -getevents -f lsi-events.log -a0 -nolog

   shell> /opt/MegaRAID/MegaCli/MegaCli -fwtermlog -dsply -a0 -nolog > lsi-fwterm.log

Collect the MegaSAS.log, lsi-events.log, and the lsi-fwterm.log files from the directory where the commands are run (they can be run from any directory on the MSP server) and attach the logs to the service request. You may use a program such as WinSCP (freeware) to pull the files off of the server.