Date: Sat, 17 Mar 2001 20:39:03 -0800 From: richard childers <fscked@pacbell.net> To: questions@freebsd.org Subject: [Fwd: SCSI disks / disklabel / vinum] Message-ID: <3AB43BE7.C85B3373@pacbell.net>
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This is a multi-part message in MIME format. --------------B9BD372FE24089109F1BA18A Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Is there an upper limit on the number of SCSI disks that can be addressed, by default, in the kernel? I recall encountering a boundary of 4 drives, back a release or three ago. How has this changed? According to the attached output, 4 is no longer the limit. Is it now 8? 16? 32? Much obliged, -- richard -- Richard A. Childers Senor UNIX Administrator fscked@pacbell.net (email) 415.664.6291 (voice/msgs) # Providing administrative expertise (not 'damage control') since 1986. # PGP fingerprint: 7EFF 164A E878 7B04 8E9F 32B6 72C2 D8A2 582C 4AFA --------------B9BD372FE24089109F1BA18A Content-Type: message/rfc822 Content-Transfer-Encoding: 7bit Content-Disposition: inline Return-path: <dpoland@execpc.com> Received: from mta4.snfc21.pbi.net (mta4-pr) by sims1.snfc21.pbi.net (Sun Internet Mail Server sims.3.5.2000.01.05.12.18.p9) with ESMTP id <0GAC0065ARR1UZ@sims1.snfc21.pbi.net> for fscked@sims-ms-daemon; Sat, 17 Mar 2001 09:40:24 -0800 (PST) Received: from out4.mx.nwbl.wi.voyager.net ([169.207.1.77]) by mta4.snfc21.pbi.net (Sun Internet Mail Server sims.3.5.2000.01.05.12.18.p9) with ESMTP id <0GAC00AIGRQQUL@mta4.snfc21.pbi.net> for fscked@sims1.snfc21.pbi.net; Sat, 17 Mar 2001 09:40:03 -0800 (PST) Received: from earth.execpc.com (dpoland@earth.execpc.com [169.207.16.1]) by out4.mx.nwbl.wi.voyager.net (8.11.1/8.11.1) with ESMTP id f2HHe2N72504 for <fscked@pacbell.net>; Sat, 17 Mar 2001 11:40:02 -0600 (CST) Received: (from dpoland@localhost) by earth.execpc.com (8.9.0) id LAA12294 for fscked@pacbell.net; Sat, 17 Mar 2001 11:40:02 -0600 (CST) Date: Sat, 17 Mar 2001 11:40:02 -0600 From: Doug Poland <doug@polands.org> Subject: Re: SCSI disks / disklabel / vinum In-reply-to: <3AB384B0.4A8F482F@pacbell.net> To: richard childers <fscked@pacbell.net> Message-id: <20010317114001.A11021@polands.org> MIME-version: 1.0 X-Mailer: Mutt 1.0pre3us Content-type: text/plain; charset=us-ascii References: <20010303150356.B29412@polands.org> <20010304091830.B12820@wantadilla.lemis.com> <20010305173531.A13041@polands.org> <3AB0C90C.7B665588@pacbell.net> <20010315122839.A15751@polands.org> <3AB384B0.4A8F482F@pacbell.net> X-Mozilla-Status2: 00000000 On Sat, Mar 17, 2001 at 07:37:20AM -0800, richard childers wrote: > Well, start at the beginning. Are you able to install FreeBSD on a stripped-down > system with the basic elements? > Yes judeah# uname -a FreeBSD judeah.polands.org 4.3-BETA FreeBSD 4.3-BETA #0: Wed Mar 7 14:55:56 CST 2001 root@judeah.polands.org:/usr/obj/usr /src/sys/GENERIC i386 > Once this is confirmed, are you able to install FreeBSD, using each of the drives, > attached directly? This should be done to eliminate any questions about drive > functionality. > Yes judeah# cat /etc/fstab # Device Mountpoint FStype Options Dump Pass# /dev/ad0s1b none swap sw 0 0 /dev/ad0s1a / ufs rw 1 1 /dev/da0s1e /data/0 ufs rw 2 2 /dev/da1s1e /data/1 ufs rw 2 2 /dev/da2s1e /data/2 ufs rw 2 2 /dev/da3s1e /data/3 ufs rw 2 2 /dev/da4s1e /data/4 ufs rw 2 2 /dev/da5s1e /data/5 ufs rw 2 2 /dev/ad0s1f /usr ufs rw 2 2 /dev/ad0s1e /var ufs rw 2 2 proc /proc procfs rw 0 0 /dev/da5s1e on /data/5 (ufs, local) > Once the drives have been confirmed, are you able to attach them and access them, in > a conventional way? > Yes judeah# mount /dev/ad0s1a on / (ufs, NFS exported, local) /dev/ad0s1f on /usr (ufs, NFS exported, local, soft-updates) /dev/ad0s1e on /var (ufs, local, soft-updates) procfs on /proc (procfs, local) /dev/da1s1e on /data/1 (ufs, local) /dev/da2s1e on /data/2 (ufs, local) /dev/da4s1e on /data/4 (ufs, local) /dev/da0s1e on /data/0 (ufs, local) /dev/da3s1e on /data/3 (ufs, local) > I seem to recall running into a 4-maximum-SCSI-drive limit in the kernel, a year or > so ago, when I tried to attach all of my SCSI disks to one server and ran into the > limit of 4 SCSI hard drives. I'm dusting off my memory and wondering if this is the > problem; I recall you mentioning more than 4 hard drives. > Yes, I'm attempting to use 6 drives now and will ultimately have 7 SCSI drives in the system. > On the other hand, that limitation was in FreeBSD 4.0; no guarantee it's still in > 4.2. > I'll start looking at LINT > Let's start by answering these questions ... ? > Thanks for you help so far Richard, I really appreciate it > > Doug Poland wrote: > > > On Thu, Mar 15, 2001 at 05:52:12AM -0800, richard childers wrote: > > > I'm not sure what you're missing; been away from email for a few days, just > > > catching up. > > > > > > I'm learning from what you are doing, though ... > > > > > Well, thanks for helping so far. I've not got past > > this problem. My would-be 7 SCSI disk server is > > still sitting torn apart on my bench. Greg Lehey > > hasn't been able to help. I've even posted to > > freebsd-scsi but to no avail :( > > > > I'm not sure where to go from here... > > > > Doug > > > > > > > > -- richard > > > > > > > > > Doug Poland wrote: > > > > > > > On Sun, Mar 04, 2001 at 09:18:30AM +1030, Greg Lehey wrote: > > > > > > > > > > It tells you: No such file or directory. You apparently don't have > > > > > the device nodes in place. > > > > > > > > > But I have the disks mounted! Right now I have 6 SCSI > > > > disks mounted and accessable on 6 different mount points. > > > > > > > > > > > > > > You'll almost certainly need to create the device nodes. > > > > > > > > > I took Richard Childers advice and did... > > > > # cd /dev > > > > # .MAKEDEV pass4 > > > > # .MAKEDEV pass5 > > > > > > > > Now I have the pass devices 0-5. When I run disklabel -e > > > > on da4 or da5, I still don't see 4.2BSD. The truely weird > > > > thing is I can see the 4.2BSD partition with a disklabel -r > > > > but not in disklabel -e. See following... > > > > > > > > judeah# disklabel -r da4 > > > > # /dev/da4: > > > > type: SCSI > > > > disk: da4s1 > > > > label: > > > > flags: > > > > bytes/sector: 512 > > > > sectors/track: 63 > > > > tracks/cylinder: 255 > > > > sectors/cylinder: 16065 > > > > cylinders: 244 > > > > sectors/unit: 3933040 > > > > rpm: 3600 > > > > interleave: 1 > > > > trackskew: 0 > > > > cylinderskew: 0 > > > > headswitch: 0 # milliseconds > > > > track-to-track seek: 0 # milliseconds > > > > drivedata: 0 > > > > > > > > 8 partitions: > > > > # size offset fstype [fsize bsize bps/cpg] > > > > c: 3933040 0 unused 0 0 # (Cyl. 0 - 244*) > > > > e: 3933040 0 4.2BSD 1024 8192 16 # (Cyl. 0 - 244*) > > > > > > > > judeah# disklabel -e da4 > > > > # /dev/da4: > > > > type: SCSI > > > > disk: IBMRAID > > > > label: 0664M1H9337 > > > > flags: > > > > bytes/sector: 512 > > > > sectors/track: 13 > > > > tracks/cylinder: 210 > > > > sectors/cylinder: 2730 > > > > cylinders: 1440 > > > > sectors/unit: 3933040 > > > > rpm: 3600 > > > > interleave: 1 > > > > trackskew: 0 > > > > cylinderskew: 0 > > > > headswitch: 0 # milliseconds > > > > track-to-track seek: 0 # milliseconds > > > > drivedata: 0 > > > > > > > > 8 partitions: > > > > # size offset fstype [fsize bsize bps/cpg] > > > > c: 3933040 0 unused 0 0 # (Cyl. 0 - 1440*) > > > > ~ > > > > The same thing shows for da5. > > > > > > > > What am I missing? > > > > > > > > -- > > > > Regards, > > > > Doug > > > > > > -- > > > Richard A. Childers > > > Senor UNIX Administrator > > > fscked@pacbell.net (email) > > > 415.664.6291 (voice/msgs) > > > > > > # Providing administrative expertise (not 'damage control') since 1986. > > > # PGP fingerprint: 7EFF 164A E878 7B04 8E9F 32B6 72C2 D8A2 582C 4AFA > > > > > > > -- > > > > Regards, > > Doug > > -- > Richard A. Childers > Senor UNIX Administrator > fscked@pacbell.net (email) > 415.664.6291 (voice/msgs) > > # Providing administrative expertise (not 'damage control') since 1986. > # PGP fingerprint: 7EFF 164A E878 7B04 8E9F 32B6 72C2 D8A2 582C 4AFA > -- Regards, Doug --------------B9BD372FE24089109F1BA18A-- To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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