MEGACLI Commands to check Hardware RAID config and Setup

To know the Hardware RAID controller and other information use lspci command.

lspci | grep -i raid

O/P:

01:00.0 RAID bus controller: LSI Logic / Symbios Logic MegaRAID SAS 2108 [Liberator] (rev 05)

The above command shows the RAID controller vendor details.

Installation of Megacli in Centos:

• Download the MeGaCLIzip from the below link
• http://www.lsi.com/downloads/Public/RAID Controllers/RAID Controllers Common Files/8.07.14_MegaCLI.zip
• Unzip the contents and install the RPM’s in the folder using rpm -ivh command
• Setup an alias likeroot#: alias MegaCli="/opt/MegaRAID/MegaCli/MegaCli64"
• Add the same line to /root/.bashrc

RAID commands:

MegaCli64 commands are formed as given below:

MegaCli64 –command –arguments/directives -a adapter info

View information about the RAID adapter:

/opt/MegaRAID/MegaCli/MegaCli64 -AdpAllinfo -aALL

Results:

Adapter #0

Versions

• Product Name : LSI MegaRAID SAS 9260-8i
• Serial No : SV31519225
• FW Package Build: 12.12.0-0111

Mfg. Data

• Mfg. Date : 04/10/13
• Rework Date : 00/00/00
• Revision No : 85B
• Battery FRU : N/A

Image Versions in Flash:

• FW Version : 2.130.353-1663
• BIOS Version : 3.24.00_4.12.05.00_0x05160000
• Preboot CLI Version: 04.04-020:#009
• WebBIOS Version : 6.0-49-e_45-Rel
• NVDATA Version : 2.09.03-0032
• Boot Block Version : 2.02.00.00-0000
• BOOT Version : 09.250.01.219

To Know information in PDrives:

/opt/MegaRAID/MegaCli/MegaCli64 -PDList -aALL

Output:

• Adapter #0
• Enclosure Device ID: 252
• Slot Number: 0
• Drive’s position: DiskGroup: 0, Span: 0, Arm: 0
• Enclosure position: N/A
• Device Id: 10
• WWN: 5000c5005c34c105
• Sequence Number: 2
• Media Error Count: 0
• Other Error Count: 0
• Predictive Failure Count: 0
• Last Predictive Failure Event Seq Number: 0
• PD Type: SATA

To know the PATROL read which explore disk error and the patrol read state and the delay between patrol read runs:

/opt/MegaRAID/MegaCli/MegaCli64 -AdpPR -Info -aALL

Output:

• Adapter 0: Patrol Read Information:
• Patrol Read Mode: Auto
• Patrol Read Execution Delay: 168 hours
• Number of iterations completed: 78
• Next start time: 05/02/2015, 03:00:00
• Current State: Stopped
• Patrol Read on SSD Devices: Disabled

To check Current patrol read rate:

/opt/MegaRAID/MegaCli/MegaCli64 -AdpGetProp PatrolReadRate -aALL

Adapter 0: Patrol Read Rate = 30%

Get the Number of Virtual Drives Configured on Each Adapter

/opt/MegaRAID/MegaCli/MegaCli64 -LdGetNum -aAll

Number of Virtual Drives Configured on Adapter 0: 2

To know Battery backup information

/opt/MegaRAID/MegaCli/MegaCli64 -AdpBbuCmd -aALL

BBU status for Adapter: 0

• BatteryType: iBBU
• Voltage: 4085 mV
• Current: 0 mA
• Temperature: 29 C
• Battery State: Optimal
• BBU Firmware Status:

Display configuration:

/opt/MegaRAID/MegaCli/MegaCli64 -CfgDsply -aAll

• Adapter: 0
• Product Name: LSI MegaRAID SAS 9260-8i
• Memory: 512MB
• BBU: Present
• Serial No: SV31519225

Number of DISK GROUPS: 2

• SPANNED DISK GROUP: 0
• Number of Spans: 2
• SPAN: 0
• Span Reference: 0x00
• Number of PDs: 2
• Number of VDs: 1
• Number of dedicated Hotspares: 0
• Virtual Drive Information:
• Virtual Drive: 0 (Target Id: 0)

Enable Forced Write Back Cache:
/opt/MegaRAID/MegaCli/MegaCli64 -LDSetProp -ForcedWB -Immediate -Lall -aAll

To disable cache with a bad BBU with MegaCLI
/opt/MegaRAID/MegaCli/MegaCli64 -LDSetProp -NoCachedBadBBU -Immediate -Lall -aAll

To Enable Drive Caches with MegaCLI
/opt/MegaRAID/MegaCli/MegaCli64 -LDSetProp -EnDskCache -Immediate -Lall -aAll