Date: Mon, 13 Oct 2008 09:35:10 -0200 From: JoaoBR <joao@matik.com.br> To: Jeremy Chadwick <koitsu@freebsd.org> Cc: freebsd-stable@freebsd.org, freebsd-amd64@freebsd.org Subject: Re: am2 MBs - 4g + SCSI wipes out root partition Message-ID: <200810130935.10570.joao@matik.com.br> In-Reply-To: <20081011101316.GA58119@icarus.home.lan> References: <200810101429.37244.joao@matik.com.br> <20081011113057.7402300c@ernst.jennejohn.org> <20081011101316.GA58119@icarus.home.lan>
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On Saturday 11 October 2008 07:13:16 Jeremy Chadwick wrote: > On Sat, Oct 11, 2008 at 11:30:57AM +0200, Gary Jennejohn wrote: > > On Fri, 10 Oct 2008 14:29:37 -0300 > > > > JoaoBR <joao@matik.com.br> wrote: > > > I tried MBs as Asus, Abit and Gigabyte all same result > > > > > > Same hardware with SATA works perfect > > > > > > Same hardware with scsi up to 3.5Gigs installed works perfect > > > > > > what calls my attention that all this MBs do not have the memroy hole > > > remapping feature so the complete 4gigs are available what normally w= as > > > not the case with amd64 Mbs for the Athlon 64 CPUs > > > > > > some has an opinion if this is a freebsd issue or MB falure or scsi d= rv > > > problem? > > > > It's a driver problem. If you want to use SCSI then you'll have to lim= it > > memory to 3.5 GB. > > What you're saying is that Adaptec and LSI Logic SCSI controllers behave > badly (and can cause data loss) on amd64 systems which contain more than > 3.5GB of RAM. This is a very big claim. > > Have you talked to Scott Long about this? > > Please expand on this, and provide evidence or references. I need to > document this in my Wiki if it is indeed true. I have an Asus AM2 Mb which support ECC mem and at least with the Adaptec r= aid=20 card (aacd) the problem does not happen (when ECC support enabled) I did 10= x=20 buildworld, ahc and mpt still same issue, first build cracks the data on=20 da0s1a >On Sat, Oct 11, 2008 at 11:30:57AM +0200, Gary Jennejohn wrote: >=20 > It's a driver problem. =A0If you want to use SCSI then you'll have to lim= it > memory to 3.5 GB. well indeed with less then 4G installed it works flawless, so the differenc= e I=20 see is that former athln64 MBs had memory hole remap options or when 4Gig=20 installed they only gave 3.something to the OS even under amd64 - this is N= OT=20 the case with the AM2 MBs which should support up to 8/16Mb onboard but wth= =20 this amount freebsd amd64 does not even boot when a scsi adaptor is install= ed =2D-=20 Jo=E3o A mensagem foi scaneada pelo sistema de e-mail e pode ser considerada segura. Service fornecido pelo Datacenter Matik https://datacenter.matik.com.br
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