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Date:      Tue, 01 Dec 1998 22:27:51 -0500
From:      Adam McDougall <bsdx@spawnet.com>
To:        "Kenneth D. Merry" <ken@plutotech.com>, scsi@FreeBSD.ORG
Subject:   Re: tosha reports random errors after transition to CAM
Message-ID:  <3664B3B7.1ABB1D6E@spawnet.com>
References:  <199812020158.SAA23279@panzer.plutotech.com>

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Kenneth D. Merry wrote:
> 
> Adam McDougall wrote...
> > Kenneth D. Merry wrote:
> > > Adam McDougall wrote...
> > > Justin suspects that the drive may not be handling 6-byte reads and writes
> > > properly.
> > >
> > > > dpt0: <DPT Caching SCSI RAID Controller> rev 0x02 int a irq 12 on
> > > > pci0.17.0
> > > > dpt0: DPT PM2144UW FW Rev. 07LY, 1 channel, 64 CCBs
> > > > da0: <QUANTUM VIKING 4.5 WSE 8808> Fixed Direct Access SCSI2 device
> > > > da0: Tagged Queueing Enabled
> > > > da0: 4345MB (8899736 512 byte sectors: 255H 63S/T 553C)
> > >
> > > Try this --  go into sys/cam/scsi/scsi_da.c, and on about line 1079, adjust
> > > the minimum_cmd_size for the read and write commands to 10 bytes.
> > >
> >
> > THANK YOU!!!! works PERFECT now :)
> >
> > So, what does this mean the problem might be?
> 
> It means you're the victim of yet another high quality Quantum drive.
> (i.e., it's a firmware bug)  Next time, buy Seagate or IBM.
> 
> Try the attached patch, and see if it works for you.  If it does, I'll
> probably commit it or something close to it.
> 
> Also -- please CC your mail to me, and don't send it just to the list.
> You may get a faster response that way.
> 
> Ken
> --
> Kenneth Merry
> ken@plutotech.com
> 
>   ------------------------------------------------------------------------
> 
>                                      Name: scsi_da.no_6_byte.120198
>    scsi_da.no_6_byte.120198          Type: Plain Text (text/plain)
>                                  Encoding: 7bit
>                               Description: scsi_da.no_6_byte.120198


yup that applies and works good.  Thanks for the help!  And no more
quantums for me, I've had my share of goofyness.

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