Ubuntu Installation Megacli

Under Ubuntu, you can manage hardware disk arrays by installing the LSI MegaRAID megacli command line tool. The specific installation steps are as follows.

1. Add MegaRAID Source:

Modify/etc/apt/sources.list to add at the end

Deb Http://hwraid.le-vert.net/ubuntu Precise Main

Then execute:

Apt-get Update

Apt-get Install MEGACLI megactl megaraid-status

If you are performing a GPG error, you need to add a certificate by executing the following command:

Wget-o-Http://hwraid.le-vert.net/debian/hwraid.le-vert.net.gpg.key | sudo apt-key add-

Then execute again:

Apt-get Install MEGACLI megactl megaraid-status

At this point the basic can be installed successfully, here are some basic commands:

to view information about a virtual drive:

Megacli-ldinfo-lall-aall

To View Physical disk information:

Megacli-pdlist-aall

Write all events to the specified file:

Megacli-adpeventlog-getevents-f Logfile-aall

Related commands and their parsing:
View Machine Model # Dmidecode | grep "Product"
View Manufacturers # dmidecode| grep "Manufacturer"
View Serial # Dmidecode | grep "Serial number"
View CPU Information # Dmidecode | grep "CPU"
See number of CPUs # Dmidecode | grep "Socket designation:cpu" |wc–l
View Factory Date # Dmidecode | grep "Date"
View charge status # megacli-adpbbucmd-getbbustatus-aall |grep "Charger status"
Display BBU status information # Megacli-adpbbucmd-getbbustatus–aall
Display BBU Capacity Information # Megacli-adpbbucmd-getbbucapacityinfo–aall
Display BBU Design Parameters # Megacli-adpbbucmd-getbbudesigninfo–aall
Show current BBU Properties # Megacli-adpbbucmd-getbbuproperties–aall
View charge Progress% # Megacli-adpbbucmd-getbbustatus-aall |grep "Relative State of Charge"
Query RAID Array # Megacli-cfgdsply-aall |grep "number of DISK GROUPS:"
Display RAID card model, RAID settings, disk related information # Megacli-cfgdsply–aall
Show all physical Information # Megacli-pdlist-aall
Show all Logical Disk group information # Megacli-ldinfo-lall–aall
View Physical Disk rebuild Progress (important) # Megacli-pdrbld-showprog-physdrv [1:5]-a0
See the number of adapters #megacli –adpcount
View adapter Time #megacli-adpgettime–aall
Show all adapter Information #megacli-adpallinfo–aall
View cache policy Settings # Megacli-cfgdsply-aall |grep polic

Hard disk:

1. View all Physical Disk information
Megacli-pdlist-aall

Adapter #0

Enclosure Number:1
Slot Number:5
Device Id:5
Sequence Number:2
Media Error count:0
Other Error count:0
Predictive Failure count:0
Last predictive Failure Event Seq number:0
Raw SIZE:140014MB [0x11177328 sectors]
Non coerced SIZE:139502MB [0x11077328 sectors]
coerced SIZE:139392MB [0x11040000 sectors]
Firmware State:hotspare
SAS Address (0): 0x5000c50008e5cca9
SAS Address (1): 0x0
Inquiry data:seagate st3146855ss s5273ln4y1x0
.....
2. View the disk cache policy
Megacli-ldgetprop-cache-l0-a0

Adapter 0-vd 0:cache policy:writeback, Readaheadnone, Direct
Or
Megacli-ldgetprop-cache-l1-a0

Adapter 0-vd 1:cache policy:writeback, Readaheadnone, Direct
Or
Megacli-ldgetprop-cache-lall-a0

Adapter 0-vd 0:cache policy:writeback, Readaheadnone, Direct
Adapter 0-vd 1:cache policy:writeback, Readaheadnone, Direct
Or
Megacli-ldgetprop-cache-lall-aall

Adapter 0-vd 0:cache policy:writeback, Readaheadnone, Direct
Adapter 0-vd 1:cache policy:writeback, Readaheadnone, Direct
Or
Megacli-ldgetprop-dskcache-lall-aall

Adapter 0-vd 0:disk Write cache:disk ' s Default
Adapter 0-vd 1:disk Write cache:disk ' s Default
3. Set the disk cache policy
Caching Policy Explanation:
WT (Write through
WB (Write back)
NORA (No read ahead)
RA (Read ahead)
ADRA (Adaptive read ahead)
Cached
Direct
Example:
Megacli-ldsetprop wt| wb| nora| ra| Adra-l0-a0
Or
Megacli-ldsetprop-cached|-direct-l0-a0
Or
Enable/disable Disk Cache
Megacli-ldsetprop-endskcache|-disdskcache-l0-a0
4. Create/delete array
4.1 Create a RAID5 array, composed of physical disk 2,3,4, the hot spare of the array is the physical disk 5
MEGACLI-CFGLDADD-R5 [1:2,1:3,1:4] WB direct-hsp[1:5]–a0
4.2 Creating an array without specifying a hot spare
MEGACLI-CFGLDADD-R5 [1:2,1:3,1:4] WB direct–a0
4.3 Deleting an array
Megacli-cfglddel-l1–a0
4.4 Adding disks online
Megacli-ldrecon-start-r5-add-physdrv[1:4]-l1-a0
This means that the Rebuild Logical disk group 1,raid level is 5, adding the Physical disk number: 1:4. After the rebuild is complete, the newly added physical disk is automatically in the Rebuild (sync) state, and this time fdisk-l is not able to see the space of the array become larger, only after the system restarts.
5. View array Initialization information
5.1 Once the array is created, there is a process to initialize the synchronization block to see its progress.
Megacli-ldinit-showprog-lall-aall
or display it in a dynamic visual text interface
Megacli-ldinit-progdsply-lall–aall
5.2 Viewing the background initialization progress of the array
Megacli-ldbi-showprog-lall-aall
or display it in a dynamic visual text interface
Megacli-ldbi-progdsply-lall-aall
6. Create a global hot spare
Specify 5th disk as global hot spare
Megacli-pdhsp-set [-enclaffinity] [-nonrevertible]-physdrv[1:5]-a0
You can also specify a dedicated hot spare for an array
Megacli-pdhsp-set [-dedicated [-array1]] [-enclaffinity] [-nonrevertible]-physdrv[1:5]-a0
7. Delete Global Hot spare
Megacli-pdhsp-rmv-physdrv[1:5]-a0
8, will be a physical disk offline/on-line
Megacli-pdoffline-physdrv [1:4]-a0
Megacli-pdonline-physdrv [1:4]-a0
9. View Physical Disk Rebuild progress
Megacli-pdrbld-showprog-physdrv [1:5]-a0

Ubuntu Installation Megacli