Date: Tue, 14 Apr 1998 08:27:02 +0100 (BST) From: Scot Elliott <scot@poptart.org> To: Brad Smith <bsmith@bfmni.com> Cc: freebsd-stable@FreeBSD.ORG Subject: Re: SCSI Problems Message-ID: <Pine.BSF.3.96.980414082431.27322A-100000@Jupiter.planet-three.com> In-Reply-To: <002b01bd674b$cd3c2140$6403a8c0@whatzit.comstyle.com>
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I had this problem a while ago, and it dissapeared when I reduced the speed-settings for the disks in the SCSI BIOS... when the U/W disks were set to 40Mb/sec, the machine routinely hung for periods of minutes with these errors. When I changed this to 20-something (26ish?) it all started to work a tad more smoothly. Hope that helps. Out of interest, does anyone know why this happens - is it the disks not keeping up with the controller, the controller not keeping up with the disks, or a driver problem? Cheers, Scot On Mon, 13 Apr 1998, Brad Smith wrote: > Date: Mon, 13 Apr 1998 22:19:43 -0400 > From: Brad Smith <bsmith@bfmni.com> > To: freebsd-stable@FreeBSD.ORG > Subject: SCSI Problems > > Just 2 days ago I CVSup'd my source tree and re-compiled the kernel & LKM's > and rebooted without any problems. Then when I came back the next morning > the box was totally unresponsive except for ping's. and all kinds of SCSI > errors which ive never seen before this kernel upgrade were on the screen. > Last kernel was from Feb 17th I think it was or somewhere near they're. > > An Adaptec 2742-T with 2 drives, and a CD-Rom > > Apr 13 13:16:40 twirl /kernel: eisa0: <HIT01 (System Board)> > Apr 13 13:16:40 twirl /kernel: Probing for devices on the EISA bus > Apr 13 13:16:40 twirl /kernel: ahc0: <Adaptec 274X SCSI host adapter> at > 0x3c00-0x3cff irq 11 on eisa0 slot 3 > Apr 13 13:16:40 twirl /kernel: ahc0: aic7770 <= Rev C, Twin Channel, A SCSI > Id=7, B SCSI Id=7, 4 SCBs > Apr 13 13:16:40 twirl /kernel: ahc0 waiting for scsi devices to settle > Apr 13 13:16:40 twirl /kernel: (ahc0:0:0): "QUANTUM FIREBALL1080S 1Q09" type > 0 fixed SCSI 2 > Apr 13 13:16:40 twirl /kernel: sd0(ahc0:0:0): Direct-Access 1042MB (2134305 > 512 byte sectors) > Apr 13 13:16:40 twirl /kernel: (ahc0:1:0): "MAXTOR LXT-213S 4.57" type 0 > fixed SCSI 1 > Apr 13 13:16:40 twirl /kernel: sd1(ahc0:1:0): Direct-Access 202MB (415436 > 512 byte sectors) > Apr 13 13:16:40 twirl /kernel: (ahc0:2:0): "COMPAQ CD-ROM CR-503BCQ 1.1c" > type 5 removable SCSI 2 > Apr 13 13:16:40 twirl /kernel: cd0(ahc0:2:0): CD-ROM can't get the size > Apr 13 13:16:40 twirl /kernel: ahc0 waiting for scsi devices to settle > > Here are the errors that I grabbed from /var/log/messages > > Apr 13 18:17:53 twirl /kernel: Unexpected busfree. LASTPHASE == 0x0 > Apr 13 18:17:54 twirl /kernel: SEQADDR == 0x12a > Apr 13 18:18:03 twirl /kernel: Timedout SCB handled by another timeout > Apr 13 18:18:23 twirl /kernel: sd0(ahc0:0:0): UNIT ATTENTION asc:29,0 > Apr 13 18:18:23 twirl /kernel: sd0(ahc0:0:0): Power on, reset, or bus > device r$ > Apr 13 18:18:23 twirl /kernel: , retries:4 > Apr 13 18:49:35 twirl /kernel: Unexpected busfree. LASTPHASE == 0x40 > Apr 13 18:49:35 twirl /kernel: SEQADDR == 0x12b > Apr 13 18:49:35 twirl /kernel: spec_getpages: I/O read error > Apr 13 18:49:35 twirl /kernel: vm_fault: pager input (probably hardware) > error,$ > Apr 13 18:49:36 twirl /kernel: sd0(ahc0:0:0): NOT READY asc:4,10 > Apr 13 18:49:36 twirl /kernel: , retries:4 > Apr 13 18:49:36 twirl /kernel: sd0(ahc0:0:0): NOT READY asc:4,10 > Apr 13 18:49:36 twirl /kernel: , retries:3 > Apr 13 18:49:36 twirl /kernel: sd0(ahc0:0:0): NOT READY asc:4,10 > Apr 13 18:49:36 twirl /kernel: , retries:2 > > and they continue on a bit more until they get to > > Apr 13 18:49:38 twirl /kernel: sd0(ahc0:0:0): NOT READY asc:4,10 > Apr 13 18:49:38 twirl /kernel: , FAILURE > > any help with resolving this problem would be helpful. > > Brad > bsmith@bfmni.com > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-stable" in the body of the message > ----------------------------------------------------------------------------- Scot Elliott (scot@poptart.org) | Work: +44 (0)171 7046777 PGP fingerprint: FCAE9ED3A234FEB59F8C7F9DDD112D | Home: +44 (0)181 8961019 ----------------------------------------------------------------------------- Public key available by finger at: finger scot@poptart.org or at: http://www.poptart.org/pgpkey.html To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message
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