Date: Wed, 22 Jul 1998 13:57:14 -0600 (MDT) From: "Justin T. Gibbs" <gibbs@narnia.plutotech.com> To: Kerry Woods <kerryw@demon.net> Cc: scsi@FreeBSD.ORG Subject: Re: AHC SCSI errors Message-ID: <199807221957.NAA28497@narnia.plutotech.com> In-Reply-To: <901099770.0027031.0@office.demon.net>
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In article <901099770.0027031.0@office.demon.net> you wrote: > Hi > > Using the FreeBSD 2.2CAM-19980716-SNAP, with > > ahc1 <Adaptec 3940 Ultra SCSI host adapter> rev 0 int a irq 11 on pci1:4:0 > ahc1: aic7880 Wide Channel A, SCSI Id=7, 16/255 SCBs > ahc2 <Adaptec 3940 Ultra SCSI host adapter> rev 0 int a irq 11 on pci1:5:0 > ahc2: aic7880 Wide Channel B, SCSI Id=7, 16/255 SCBs > > and > da1 at ahc1 bus 0 target 0 lun 0 > da1: <SEAGATE ST15230N 0638> Fixed Direct Access SCSI2 device > da1: 10.0MB/s transfers (10.0MHz, offset 15), Tagged Queueing Enabled > da1: 4095MB (8386733 512 byte sectors: 64H 32S/T 4095C) > > plus five more of the same disks off ahc1 forming a ccd array Did you see any messages showing the tag count being reduced? > Jul 21 17:58:04 test /kernel: SEQADDR == 0x8 > Jul 21 17:58:04 test /kernel: SSTAT1 == 0xa > Jul 21 17:58:04 test /kernel: (da2:ahc1:0:1:0): Queuing a BDR SCB > Jul 21 17:58:04 test /kernel: (da2:ahc1:0:1:0): Bus Device Reset Message Sent > Jul 21 17:58:04 test /kernel: (da2:ahc1:0:1:0): no longer in timeout, status = 3 This usually indicates a drive firmware bug. Essentially the adaptec sent the drive a command that didn't come back after 10 whole seconds. You can verify this with a SCSI bus trace. You should probably contact Seagate and see if there is newer firmware available for these drives. > Seen over various drives and over both controllers when the drives were > split between them; option SCB_PAGING is not enabled; SCB_PAGING is enabled as it is no longer an option under CAM. You should also ensure that you use AHC_ALLOW_MEMIO if your motherboard supports it (most do). -- Justin To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-scsi" in the body of the message
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