Date: Tue, 27 Jan 1998 10:51:24 -0800 (PST) From: Doug White <dwhite@gdi.uoregon.edu> To: Chris Sagar <CSagar@exchange.iterated.com> Cc: "'freebsd-questions@FreeBSD.ORG'" <freebsd-questions@FreeBSD.ORG> Subject: Re: adding disk drives Message-ID: <Pine.BSF.3.96.980127104740.16462M-100000@gdi.uoregon.edu> In-Reply-To: <B127D055F876D111981F00C04FD5D32C025E9E@exchange.iterated.com>
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On Fri, 23 Jan 1998, Chris Sagar wrote: > I am trying to add two disk arrays. My configuration is: > 8 4-gb Seagate drives on one Adaptec 2944UW controller ( two identical > setups. 64 GB total, two controllers, 16 disks) > I plan to use ccd to create two 32 GB logical volumes for the system. OK. (What's the difference between the 2940 and the 2944, if you know?) > My question/comments: > Am I missing something in that it looks like I have to configure the > kernel to support two controllers? The controllers are probed and > detected at bootup, but where do they show in the /dev directory. Controllers don't show up in /dev, only the respective disks as /dev/sd1, /dev/sd2, and so forth. The boot messages tell you which disk is attached to which device; you can use the `dmesg' command to review the boot messages, or they're in the system log /var/log/messages. > device names ( /dev/cont??sd0s7). The handbook is very lacking in the > part of adding disk drives. You missed my tutorial! http://www.freebsd.org/tutorials/diskformat/ > Do I need to get a BSD manaual to cover > adding disks. I am fairly competent in various UNIXs (Intergraph, SGI, > Sun) but I am a stranger to FreeBSD. Yeah, you're stuck in the SysV universe. :-) `The Complete FreeBSD' by Greg Lehey, available from Walnut Creek, would be an excellent purchase. > .I have added ahc1 to my kernel config file. I have defined scbus0 as > ahc0 and scbus1 as ahc1. I have locked-down the device numbers to the > scsi ID (this is a really primitive thing to have to do). I have rebuilt > the kernel and am proceeding. You don't have to force the SCSI IDs unless you have transient devices like Zip disks that can muck up the works and move the SCSI disk numbers around. Doug White | University of Oregon Internet: dwhite@resnet.uoregon.edu | Residence Networking Assistant http://gladstone.uoregon.edu/~dwhite | Computer Science Major
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