[4144] in linux-scsi channel archive
Re: Timeout errors with ncr53c895
daemon@ATHENA.MIT.EDU (Richard Waltham)
Wed Jun 17 17:11:53 1998
From: Richard Waltham <dormouse@farsrobt.demon.co.uk>
To: ofcantero@ceife.es (Oscar Fernandez Cantero)
Date: Wed, 17 Jun 1998 18:52:09 +0100 (BST)
Cc: linux-scsi@vger.rutgers.edu
In-Reply-To: <3587AA9C.C72CD573@ceife.es> from "Oscar Fernandez Cantero" at Jun 17, 98 11:38:04 am
Oscar Fernandez Cantero wrote:
>
> Hello SCSIers of the world,
>
> I have recently got a Symbios SYM8951U Ultra2 card with NCR53C895 SCSI
> chip.
> I use it with 3 Cheetah Ultra2 drives in a raid0 configuration.
> I use kernel 2.0.34 patched with driver NCR53C8XX version 3.0 (the last
> I think).
>
> When I use them in 20MHz mode (40Mb/s selectable in the setup utility o=
> f
> the card)
> all works fine. But when I try changing to 40MHz mode (Ultra2 mode) the
> configuration
> continues to be usable, but at arbitrary times an error arises that
> suspends
> the SCSI bus for a moment.
>
> The error says:
>
>
> scsi : aborting command due to timeout : pid 186838, scsi2, channel 0,
> id 2, lun 0 Read (6) 00 a5 48 30 00
> ncr53c8xx_abort: pid=3D186838 serial_number=3D186870
> serial_number_at_timeout=3D186870ncr53c895-0: abort ccb=3D013dd020 (can=
> cel)
> scsi : aborting command due to timeout : pid 186837, scsi2, channel 0,
> id 1, lun 0 Read (6) 00 a5 48 36 00
> ncr53c8xx_abort: pid=3D186837 serial_number=3D186869
> serial_number_at_timeout=3D186869ncr53c895-0: abort ccb=3D06488820 (can=
> cel)
> scsi : aborting command due to timeout : pid 186836, scsi2, channel 0,
> id 0, lun 0 Read (6) 00 a5 4e 32 00
> ncr53c8xx_abort: pid=3D186836 serial_number=3D186868
> serial_number_at_timeout=3D186868ncr53c895-0: abort ccb=3D06488020 (can=
> cel)
> SCSI host 2 abort (pid 186838) timed out - resetting
> SCSI bus is being reset for host 2 channel 0.
> ncr53c8xx_reset: pid=3D186838 reset_flags=3D2 serial_number=3D186870
> serial_number_at_timeout=3D186870
> ncr53c895-0: resetting, command processing suspended for 2 seconds
> ncr53c895-0: enabling clock multiplier
> ncr53c895-0: Downloading SCSI SCRIPTS.
> ncr53c895-0: command processing resumed
>
> This message sequence use to be repeated indefinitely.
>
> A few of the times it is able to continue, the most I have to kill the
> process
> associated to stop the messages.
>
> If someone could give some useful hints it would be very appreciated.
>
> Thanks in advance=20
>
>
> --=20
> ------------------------------------------------------------------
> Oscar Fern=E1ndez Cantero <ofcantero@ceife.es>
> CEIFE - Centro Espa=F1ol de Investigaci=F3n Farmacoepidemiol=F3gica
> Almirante 28 2=BA http://www.ceife.es
> 28004 MADRID, SPAIN
> Phone: +34 91 531 7975
> Fax: +34 91 531 2871
> -------------------------------------------------------------------
>
> -
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>
--
Richard Waltham | Work: richard@digitalinterface.demon.co.uk
At home in | Home: dormouse@farsrobt.demon.co.uk
Southampton UK | 100421.1276@compuserve.com
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