LSI2008 controller clobbers first disk with new LSI mps driver

[Desai, Kashyap]

Here is a possible root cause of this issue.

Enclosure which you are using in your setup (might be) not configured properly.

You have Enclosure with 12 Slots + 1 SES Device.
See below detail from the log.

	EventDataLength: 5
	AckRequired: 0
	Event: SasEnclDeviceStatusChange (0x1d)
	EventContext: 0x0
	EnclosureHandle: 0x2
	ReasonCode: Added
	PhysicalPort: 0
	NumSlots: 13
	StartSlot: 0
	PhyBits: 0xff

StartSlot is 0 in this case. 
Correct behavior should be each device on your enclosure must have different slot number starting from 0 till 12. 
I have doubt that SES device has not configured well and it is using slot-0 as default. This can create issue for actual device which is connected to slot-0.
So In your setup you will have slot-0 till slot-11 assigned for actual Phys of your enclosures and again slot-0 is assigned for SES device instead of Slot-12.

To confirm my doubt: please provide me debug dmesg log using attached patch.

~ Kashyap

> -----Original Message-----
> From: Jason Wolfe [mailto:nitroboost at gmail.com]
> Sent: Wednesday, February 22, 2012 2:06 AM
> To: Desai, Kashyap
> Cc: freebsd-scsi at freebsd.org; McConnell, Stephen
> Subject: Re: LSI2008 controller clobbers first disk with new LSI mps
> driver
> 
> On Tue, Feb 21, 2012 at 10:51 AM, Desai, Kashyap <Kashyap.Desai at lsi.com>
> wrote:
> > Jason,
> >
> > I am looking at your logs and trying to correlate with code.
> >
> > Meanwhile can you try to reduce 4 Drives from you setup and repeat the
> same test ?
> > BTW, Do you have access to "lsiutil" ?
> >
> > ~ Kashyap
> 
> Kashyap,
> 
> I don't have physical access to the server, it's in one of our remote
> locations.  If it comes down to it, I could have drives removed, but
> it's $$.  Let me know if you think it will require that.  I've not
> seen lsiutil for FreeBSD and I was under the impression it was closed
> source.  Maybe you can point me in the direction if there is a way I
> can grab it?
> 
> Jason
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