How to create Raid 10 with megacli

Solution 1:

Response a Create Raid 10 (not Raid 6)

1. First get the Adapter #

   # MegaCli Adpallinfo -aall | grep '^Adapter'  
   Adapter #0   
   

   MegaCli or megacli depending distro *nix

   In this case Adapter it's Adapter #0

2. Get Device ID and Slot disk values:

    # MegaCli64 -PDlist -aall | grep -e '^Enclosure Device ID:' -e '^Slot Number:'
    Enclosure Device ID: 252
    Slot Number: 0
    Enclosure Device ID: 252
    Slot Number: 1
    Enclosure Device ID: 252
    Slot Number: 2
    Enclosure Device ID: 252
    Slot Number: 3
   

   ID in this case for all it's 252

3. According MegaCli command for create RAID 10 it's MegaCli -CfgSpanAdd -r10 -Array0[E:S,E:S] -Array1[E:S,E:S] -aN

   MegaCli -CfgSpanAdd -R10 -Array0[252:0,252:2] -Array1[252:1,252:3] -a0
   

   In this case, create a RAID 10, creating one array for Raid1 with disk 0 and 2, and other array for Raid1 with disks 1 and 3 and N = 0 (-a0)

4. Verify RAID

    # megasasctl
    a0       LSI MegaRAID SAS 9271-4i encl:1 ldrv:1  batt:FAULT, low voltage, charge failed
    a0d0      1489GiB RAID 10  2x2  optimal
    a0e252s0    745GiB  a0d0  online
    a0e252s1    745GiB  a0d0  online
    a0e252s2    745GiB  a0d0  online
    a0e252s3    745GiB  a0d0  online
   

   Or if megasasctl is unavailable:

    # MegaCli -LDInfo -Lall -aALL
    Adapter 0 -- Virtual Drive Information:
    Virtual Disk: 0 (Target Id: 0)
    Name:
    RAID Level: Primary-1, Secondary-0, RAID Level Qualifier-0
    Size:1.454 TB
    State: Optimal
    Stripe Size: 256 KB
    Number Of Drives per span:2
    Span Depth:2
    Default Cache Policy: WriteBack, ReadAhead, Direct, No Write Cache if Bad BBU
    Current Cache Policy: WriteBack, ReadAhead, Direct, No Write Cache if Bad BBU
    Access Policy: Read/Write
    Disk Cache Policy: Enabled
    Encryption Type: None
   

Solution 2:

You didn't understand the man page. E25:S02 - its like variable which should have int values. All you need:

1.Get adapter ID (it's 0 in my example):

root@sto# megacli Adpallinfo -aall | grep '^Adapter'                                                    
Adapter #0

2. Get E and S values:

megacli -PDlist -aall | grep -e '^Enclosure Device ID:' -e '^Slot Number:'

You will get something like this:

Enclosure Device ID: 20
Slot Number: 0
Enclosure Device ID: 20
Slot Number: 1
Enclosure Device ID: 20
Slot Number: 2
Enclosure Device ID: 20
Slot Number: 3
Enclosure Device ID: 20
Slot Number: 4

This is you E and S numbers, i.g. 20:0,20:1,20:2,20:3,20:4 So the command to create for example RAID6, will be:

megacli -CfgLdAdd -r6 [20:0,20:1,20:2,20:3,20:4] -a0

Solution 3:

I used that (couple months ago to create raid 50):

megacli -CfgSpanAdd -r50 -Array0[252:2,252:3,252:4] Array1[252:5,252:6,252:7] WB RA Direct CachedBadBBU -a0

IBM x3560 and:

Product Name    : ServeRAID M5015 SAS/SATA Controller
Serial No       : SV14018726
FW Package Build: 12.13.0-0179