LSI 9240-4i 4K alignment

Steven Hartland killing at
Thu Aug 16 18:45:19 UTC 2012

----- Original Message ----- 
From: "George Kontostanos" gkontos.mail at

>> It still really smells like something higher up the layers than the
>> controller tbh.
> We have tried many combinations with different drives. Any other suggestions?

See below

>> Confused as your 9240-4i is a SAS2008 based card so you "shouldnt" be
>> seeing any difference as it should be supported just fine under mps.
>> The cards we have here are 9211-8i if that helps.
> You are right, the chip specs say: LSISAS2108 RAID-on-Chip

Hmm LSI's website says its a LSISAS2008 not a LSISAS2108

> The drives are identified as mfisyspd0, mfisyspd1, etc.

Are you actually using HW RAID volumns then instead of direct disks?

If so I would advice configuring the disks as passthrough.

What does pciconf -lv say?

On boot I see the following here to 2008 chip controller:-

== /var/run/dmesg.boot ==
mps0: <LSI SAS2008> port 0xe000-0xe0ff mem 0xfaf3c000-0xfaf3ffff,0xfaf40000-0xfaf7ffff irq 26 at device 0.0 on pci7
mps0: Firmware:
mps0: IOCCapabilities: 185c<ScsiTaskFull,DiagTrace,SnapBuf,EEDP,TransRetry,IR>
mps0: [ITHREAD]

== pciconf -lv ==
mps0 at pci0:7:0:0: class=0x010700 card=0x30201000 chip=0x00721000 rev=0x03 hdr=0x00
    vendor     = 'LSI Logic (Was: Symbios Logic, NCR)'
    class      = mass storage
    subclass   = SAS

I suspect reading around that the MegaRAID cards are have SAS chips on board
but are superseed by the RAID part hence mfi vs mps

I wonder if you could flash with the IT firmware instead of IR to make it show
as mps instead of mfi?


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