To know the Hardware RAID controller and other information use the 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:
The 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:#%00009
- 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
- Number of PDs: 2
- Span Reference: 0x00
- Number of VDs: 1
- Virtual Drive Information:
- Number of dedicated Hotspares: 0
- 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
Hope it helps. If you need any assistance Contact Us
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