From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andrew To: 9fans@cse.psu.edu Subject: Re: [9fans] file server page faulting Message-ID: <20020913163743.GA19527@thefrayedknot.armory.com> References: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.4i Date: Fri, 13 Sep 2002 09:37:43 -0700 Topicbox-Message-UUID: ea095976-eaca-11e9-9e20-41e7f4b1d025 On Fri, Sep 13, 2002 at 04:37:34PM +0100, nigel@9fs.org wrote: > It really ought not to page fault for a bad block. The file server > driver certainly recovers from bad block accesses, as I saw > quite a few on my server this summer. Unfortunately, as my > fake worm filled up, I have pulled the scsi drives from the server, > replacing them with IDE as the prices make it prohibitive to > work any other way. 70Gb SCSI drives are ??450 +VAT here, > whereas 80GB IDE are and still spend less than half for the same capacity. > > I still have SCSI in my terminal. > > However, there are compatibility problems between 53c8xx > chips and PCI busses, which is nothing to do with Plan 9. I > certainly found that old controllers (53c810s) did not > work reliabuly in PCI 2.1 busses; bus faults I think. I guess > that the same issues could exist with a new controller and > an old motherboard, but I don't have any old motherboards > any more. > > It is certainly supported hardware, but only if the hardware > is plugged into a compatible socket. one more point of interest: when i first went to setup the file server i had two drives on the scsi bus and i tried to have them both interleave as the main drive (i followed the wiki's instructions). When I went to do a replica it would always crash. if you are interested I can send send the hardware to you for you to work on, i have no shortage of machines (just scsi interfaces).