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Date:      Tue, 15 Dec 1998 19:20:32 -0700 (MST)
From:      "Kenneth D. Merry" <ken@plutotech.com>
To:        swjeong@net.kitel.co.kr (swjeong)
Cc:        freebsd-scsi@FreeBSD.ORG
Subject:   Re: scsi error message
Message-ID:  <199812160220.TAA64842@panzer.plutotech.com>
In-Reply-To: <199812152353.IAA05913@net.kitel.co.kr> from swjeong at "Dec 16, 98 08:53:50 am"

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swjeong wrote...
> 
> I am using 3.0-RELEASE.
> I saw the following SCSI error message.
> What is the reason?
> I have properley terminated SCSI bus.
> 
> # dmesg
> 
> ...
> 
> da5 at ahc0 bus 0 target 7 lun 0
> da5: <SEAGATE ST410800N 7102> Fixed Direct Access SCSI2 device 
> da5: 5.0MB/s transfers (5.0MHz, offset 15), Tagged Queueing Enabled
> da5: 8347MB (17096357 512 byte sectors: 255H 63S/T 1064C)
> 
> ...
> 
> (da5:ahc0:0:7:0): tagged openings now 62
> (da5:ahc0:0:7:0): SCB 0x10 - timed out while idle, LASTPHASE == 0x1, SCSISIGI == 0x0
> SEQADDR == 0x8
> SSTAT1 == 0xa
> (da5:ahc0:0:7:0): Queuing a BDR SCB
> (da5:ahc0:0:7:0): Bus Device Reset Message Sent
> (da5:ahc0:0:7:0): no longer in timeout, status = 34b
> ahc0: Bus Device Reset Sent. 62 SCBs aborted


The "timed out while idle" message is caused by a device going "out to
lunch" and not coming back on the bus.  In this case, it probably means
that we sent a transaction to the disk and it didn't return the transaction
within 60 seconds.

That drive, with the 71xx firmware revisions, is known to be more or less
broken for tagged queueing.  Since I see the tagged openings message,
either one of two things has happened:

 - You have disabled the quirk entry in cam_xpt.c.
 - There's something wrong with the quirk entry or quirk entry mechanism,
   since it is reporting the number of outstanding tags.

So, have you changed the quirk entry?

There's one other odd, and possibly bad thing there.  The above disk is on
SCSI ID 7.  That's generally the SCSI ID that the SCSI controller is on.
What SCSI ID is your controller on?  Can you send the full dmesg output
from that machine?

Ken
-- 
Kenneth Merry
ken@plutotech.com

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