[4143] in linux-scsi channel archive
Timeout errors with ncr53c895
daemon@ATHENA.MIT.EDU (Oscar Fernandez Cantero)
Wed Jun 17 10:41:15 1998
Date: Wed, 17 Jun 1998 11:38:04 +0000
From: Oscar Fernandez Cantero <ofcantero@ceife.es>
To: linux-scsi@vger.rutgers.edu
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 of
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=186838 serial_number=186870
serial_number_at_timeout=186870ncr53c895-0: abort ccb=013dd020 (cancel)
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=186837 serial_number=186869
serial_number_at_timeout=186869ncr53c895-0: abort ccb=06488820 (cancel)
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=186836 serial_number=186868
serial_number_at_timeout=186868ncr53c895-0: abort ccb=06488020 (cancel)
SCSI host 2 abort (pid 186838) timed out - resetting
SCSI bus is being reset for host 2 channel 0.
ncr53c8xx_reset: pid=186838 reset_flags=2 serial_number=186870
serial_number_at_timeout=186870
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
--
------------------------------------------------------------------
Oscar Fernández Cantero <ofcantero@ceife.es>
CEIFE - Centro Español de Investigación Farmacoepidemiológica
Almirante 28 2º http://www.ceife.es
28004 MADRID, SPAIN
Phone: +34 91 531 7975
Fax: +34 91 531 2871
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