Configure RAID10 Volume With The OHMP Raidconfig Utility with LSI internal controller

Asset ID:	1-71-2075913.1
Update Date:	2017-04-07
Keywords:

Solution Type Technical Instruction Sure

Solution 2075913.1 : Configure RAID10 Volume With The OHMP Raidconfig Utility with LSI internal controller

Applies to:

SPARC T5-2 - Version All Versions to All Versions [Release All Releases]
Information in this document applies to any platform.

Goal

Qn1:Customer reports he can't create a RAID 10 using raidconfig utility

Qn2:Customer reports he can't create a raid 10 using raidconfig, he gets an error that the controller doesn't support the raid level. He is able though to create the raid level 10 using sas2ircu or Fcode. he wants to know if there are any known issues or if raidconfig supports raid 10. He's running the version below.

Version of OHMP is below.
root@T4-1:~# pkg list | grep raidconfig
system/management/raidconfig 2.3.2.5-0.175.2.13.0.3.0 i--

- model:SPARC T5-2
- OS:Solaris 11.2 + SRU15081（SRU11.2.13.6.0）
- utility:OHMP(raidconfig)

The following errors occur.
------------
# raidconfig create raid --level=10 -d c0d0,c0d1,c0d2,c0d3
ERROR: RAID level not supported by controller
-------------

Solution

An1:

Basically, the RAID 10 created by sas2ircu is considered as RAID 1E by LSI SDK. Therefore raidconfig reports that it does not support RAID 10.

The workaround is to use raid level 1E with even number of disks.

- Odd number of disk => Raid 1E
- Even number of disk => Raid 10

# raidconfig create raid --level=1E -d c0d0,c0d1,c0d2,c0d3

RAID 10 can be created by LSI tools sas2ircu, but not for LSI SDK based program, such as raidconfig.
LSI SDK is the root cause of the problem.

raidconfig list the raid level as 1E, but the sas2ircu list the raid level as 10.

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