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Date:      Fri, 24 Aug 2001 07:45:02 +0200 (CEST)
From:      Dan Larsson <dl@tyfon.net>
To:        Ted Mittelstaedt <tedm@toybox.placo.com>, Joe Clarke <marcus@marcuscom.com>
Cc:        FreeBSD Questions List <questions@FreeBSD.ORG>
Subject:   RE: What does these SCSI error messages mean?
Message-ID:  <20010824073307.T5765-100000@hq1.tyfon.net>
In-Reply-To: <005f01c12c5d$dbf2fd00$1401a8c0@tedm.placo.com>

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On Thu, 23 Aug 2001, Ted Mittelstaedt wrote:
| >What does these errors mean?
| >
| >Aug 23 20:20:29 dmx03 /kernel: (da0:ahc0:0:0:0): parity error detected in\
|
| I think it means you have a parity error.
|
| >  Data-in phase. SEQADDR(0x1ac) SCSIRATE(0x95)
| >Aug 23 20:20:29 dmx03 /kernel: (da0:ahc0:0:0:0): READ(10). CDB: 28 0 0 73\
| >  ca 16 0 0 2 0
| >Aug 23 20:20:29 dmx03 /kernel: (da0:ahc0:0:0:0): ABORTED COMMAND\
| >  csi:ff,ff,ff,ff asc:48,0
| >Aug 23 20:20:29 dmx03 /kernel: (da0:ahc0:0:0:0): Initiator detected error\
| >  message received
| >[... this repeats itself about ten times ...]
| >[... all messages within a one second timeframe ...]
| >
|
| You have a problem in the SCSI subsystem.  Possible causes are bad
| termination,
| bad cabling, too long cabling, a failing device, incompatible SCSI devices.
| If you would provide hardware info we might be able to assist.

ahc0: <Adaptec 2940 Ultra2 SCSI adapter (OEM)> port 0xd800-0xd8ff mem\
  0xf9000000-0xf9000fff irq 11 at device 10.0 on pci0
da0 at ahc0 bus 0 target 0 lun 0
da0: <WDIGTL ENTERPRISE 1.91> Fixed Direct Access SCSI-2 device
da0: 40.000MB/s transfers (20.000MHz, offset 15, 16bit)
da0: 4157MB (8515173 512 byte sectors: 255H 63S/T 530C)

|

I'm inclined to think it's not a SCSI cabling/termination or any kind of
incompatibility issue since the box has been running flawlessly since
FreeBSD-3.4 was released (it's now running FreeBSD-4.3 STABLE).

Let's say it is a failing device. Is it the SCSI controller (ahc device)
or the SCSI disk (da device) giving up on me? Or if that's unclear from
the messages how can I find that out before it totally dies?


Regards
+------
Dan Larsson  -+- Tyfon Svenska AB -+-  DL1999-RIPE
2AA5 90AE 5185 5924 1E0B  1A99 EC8A EA84 406B 06B9




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