[CentOS] slightly off-topic, RAID program for on-board SAS 2308-4i ?

Wed Feb 17 19:49:42 UTC 2016
Zube <Zube at stat.colostate.edu>

On Tue Feb 16 03:35:06 PM, John R Pierce wrote:

Thanks to both you and Mark Roth for chiming in and thank you
for the lsi-raidinfo script.

> On 2/16/2016 3:23 PM, Zube wrote:
> >Does anyone know what program can be used to query the RAID status
> >from the OS for an on-board LSI SAS 2308-4i?
> the 2308 isn't actually a megaraid, 

Right, that is in agreement with both the Avago whitepaper and the
bits from the HP web site.

>  its a simple SAS HBA that has an optional raid mode IF its flashed
>  with IR firmware... this only supports raid 0/1/10.

and later ...

> the megaraid management software does support these chips in IR mode

The on-board 2308-4i has a RAID-1 set connected, configured in the BIOS 
before installing the OS.  From dmesg:

scsi 0:1:0:0: Direct-Access     LSI      Logical Volume   3000 PQ: 0 ANSI: 6
scsi 0:1:0:0: RAID1: handle(0x0143), wwid(0x0dafbe8ecd4f4330), pd_count(2), type(SSP)
scsi 0:1:0:0: qdepth(128), tagged(1), simple(1), ordered(0), scsi_level(7), cmd_que(1)

So, one of these must be true:

1) The machine came from HP with the IR firmware, yet MegaCli64
does not work on the 2308-4i.  For the record, it dies because
/dev/megaraid_sas_ioctl_node is not created when MegaCli64 is run,
as it is on PowerEdge machines.

2) The machine came from HP with the IT firmware, yet there is some
way to create a RAID-1 in the BIOS with it.

3) There's something I'm missing and/or I'm completely barking mad.

Any further clues appreciated.