am2 MBs - 4g + SCSI wipes out root partition

Scott Long scottl at
Mon Oct 13 06:39:55 PDT 2008

JoaoBR wrote:
> On Sunday 12 October 2008 14:10:36 Scott Long wrote:
>>>> I am using some LSI (mpt driver) ultra4 (U320 scsi) and LSI SAS
>>>> controllers in FreeBSD 7.x amd64 with 20G of ram, and Adaptec (aac
>>>> driver) with a 5th generation RAID card with 8G of ram, both have no
>>>> such corruption problems.  Providing this as a counter-example just to
>>>> document some evidence of which products seem to work fine.
>>> Is your LSI SAS controller driven by mpt(4) or mfi(4)?
>> I can personal vouch for MPT and MFI drivers working just fine with >4GB.
> let narrow this a little bit, are you talking about AM2 sockets? 
> because on AM2 the MPT drv is faulty as AHC, AHD and AACD with => 4Gigs

Sounds to me like this is a problem either with AM2 systems, or an 
infrastructure problem in the OS that is triggered by these AM2 systems.
Either way, it's not a SCSI driver problem.


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