problems installing 6.1-RELEASE on Dell PowerEdge 1855

I’m trying to do a fresh install of FreeBSD 6.1-RELEASE on a
new
Dell PowerEdge 1855 blade server.  The hardware notes for
6.1 say
the Dell PERC 4/IM SCSI raid controller is supported by the
amr
driver.  The problem I’m having is that the kernel on the
install cd
is trying to load the mpt driver, which sees the controller
and then
fails to load with a timeout error.  How do I install
FreeBSD with
just the amr driver and not the mpt driver?

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FBSD <fbsdunimatrixzero.com> writes:

> I'm trying to do a fresh install of FreeBSD
6.1-RELEASE on a new
> Dell PowerEdge 1855 blade server.  The hardware notes
for 6.1 say
> the Dell PERC 4/IM SCSI raid controller is supported by
the amr
> driver.  The problem I'm having is that the kernel on
the install cd
> is trying to load the mpt driver, which sees the
controller and then
> fails to load with a timeout error.  How do I install
FreeBSD with
> just the amr driver and not the mpt driver?

I don't see offhand how that could be happening in the
first place.  
Time to ask the driver author, perhaps.
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Lowell Gilbert wrote:

>FBSD <fbsdunimatrixzero.com> writes:
>
>  
>
>>I'm trying to do a fresh install of FreeBSD
6.1-RELEASE on a new
>>Dell PowerEdge 1855 blade server.  The hardware
notes for 6.1 say
>>the Dell PERC 4/IM SCSI raid controller is supported
by the amr
>>driver.  The problem I'm having is that the kernel
on the install cd
>>is trying to load the mpt driver, which sees the
controller and then
>>fails to load with a timeout error.  How do I
install FreeBSD with
>>just the amr driver and not the mpt driver?
>>    
>>
>
>I don't see offhand how that could be happening in the
first place.  
>Time to ask the driver author, perhaps.
>  
>
Without some information about what FreeBSD is seeing, it's
impossible 
to say what controller you really have and why it is being
detected how 
it is.

If you can get to the point where you can run "pciconf
-l -v" (fixit 
shell?) you can see exactly what information FreeBSD sees to
identify 
the device.  You can then compare that to the IDs that the
amr and mpt 
drivers latch on to.  (The cvs web tree would have that, or
you could 
try posting back that info so that someone with 6.1 could
check).

It wouldn't be unheard of for Dell to have *changed* which
chips they 
use for a PERC 4/IM; or perhaps there is a documentation
error. 

But if the mpt driver is latching on to the device it must
be because it 
thinks it should.  If the amr driver does not recognise the
device then 
what you are suggesting wouldn't work, even if it were
possible.  Unless 
there is a bug, then, in general, only one hardware driver
will ever 
recognise any specific device/chip.

If it really is the mpt driver which should be loaded, then,
as Lowell 
says, asking the driver author (or trying hardware) would
be your best bet.

Did you try google for "Dell 1855 Freebsd"?

--Alex


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