Date: Wed, 30 Sep 1998 23:40:42 -0700 (PDT) From: Howard Lew <digital@www2.shoppersnet.com> To: Thomas Keusch <thomas@visionaire.ping.de> Cc: freebsd-scsi@FreeBSD.ORG, freebsd-questions@FreeBSD.ORG Subject: Re: NCR 53c875 SCSI Problems Message-ID: <Pine.BSF.3.96.980930232911.11893D-100000@www2.shoppersnet.com> In-Reply-To: <19980928053655.19907@visionaire.ping.de>
next in thread | previous in thread | raw e-mail | index | archive | help
On Mon, 28 Sep 1998, Thomas Keusch wrote: > On Sep 26, Howard Lew wrote > > > Somehow, the Seagate Hawk drive is having or causing the command failure > > problem -- something that never occurred with the 810 when using freebsd. > > > > Does anyone know what kind of command it is failing on? Is it trying to > > query the drive speed or something? > > I have a very similar/the same problem with a SymbiosLogic 8750SP Ultra-SCSI > controller and two IBM DCAS 4.1 Gb HDDs. > > I did not find a solution yet, but it seems that the problem on my box is > related to FreeBSD trying to find out the size of the disks. This produces > basically the same error as yours, but quits scanning with an "could not get > size" error for each disk after a while. Yes, this is exactly the same problem I am having. I guess if I wait a very long time, it might get past the boot probe after failing to detect the affected drives, but generally the boot probe shouldn't take 1 hour or more to do. > > I took of the entire bus from the controller, so that the controller was the > only SCSI device in the system. FreeBSD doesn't choke on the controller > itself, it's the disks. Yes, it is the disks -- not the controller. There is an easy fix if you already have a working FreeBSD system that is booting off another drive. As long as you are not using the WIDE bus, you can force everything to 8 bit mode. I found that changing the SCSI_NCR_MAX_WIDE to 0 does the trick. Of course, this forces 8 bit mode and disables the WIDE bus, so you should not have any devices on the WIDE bus. As it is, this is not a real fix because you need a working system to make the changes in ncr.c and then recompile the system. So if a new user wants to install FreeBSD on his hard disk, this quick fix will not work as they won't be able to get through the installation. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?Pine.BSF.3.96.980930232911.11893D-100000>