LSI megaraid configuration
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HowTo configure LSI megaraid using the CLI.
Show adapter state
megacli -AdpAllInfo -aAll
Show physical drives
megacli -PDList -aAll |
egrep "Enclosure Device ID:|Slot Number:|Inquiry Data:|Error Count:|state"
Delete all logical drives CAUTION!
megacli -CfgLdDel -Lall -aAll
megacli -CfgClr -aAl
Create a logical RAID 5 drive using 4 physical drives
megacli -CfgLdAdd -r5 [252:0,252:1,252:2,252:3] WB RA Direct CachedBadBBU -a0
megacli -AdpBootDrive -set -L0 -a0
megacli -AdpBootDrive -get -a0
megacli -LDInfo -Lall -Aall
Example output:
Adapter 0 -- Virtual Drive Information:
Virtual Drive: 0 (Target Id: 0)
Name :
RAID Level : Primary-5, Secondary-0, RAID Level Qualifier-3
Size : 669.187 GB
Sector Size : 512
Is VD emulated : No
Parity Size : 223.062 GB
State : Optimal
Strip Size : 256 KB
Number Of Drives : 4
Span Depth : 1
Default Cache Policy: WriteBack, ReadAhead, Direct, Write Cache OK if Bad BBU
Current Cache Policy: WriteBack, ReadAhead, Direct, Write Cache OK if Bad BBU
Default Access Policy: Read/Write
Current Access Policy: Read/Write
Disk Cache Policy : Disk's Default
Encryption Type : None
Bad Blocks Exist: No
Is VD Cached: No
See also the Hetzner tutorial.
Create a simple volume
pvcreate /dev/sda3
vgcreate vg1 /dev/sda3
lvcreate -l +100%FREE vg1
mkfs.ext4 /dev/mapper/vg1-lvol0
mkdir /srv
add filesystem to /etc/fstab:
/dev/mapper/vg1-lvol0 /srv ext4 noatime,nodiratime,commit=60,barrier=0 0 2
and mount it …
mount /srv
