SUMMARY: SCSI Errors

From: Grant Lowe <glowe_at_skydesk.com>
Date: Fri Apr 20 2001 - 15:49:52 EDT
Hi Managers.

Original question:

I have an E4500, running Solaris 8.  Attached to this is an ADIC Scalar 1000
tape library with 12 Sony AIT-2 tape drives.  I keep on getting messages
like these:

Apr 17 06:39:13 downer scsi: [ID 107833 kern.warning] WARNING:
/sbus@a,0/QLGC,isp@2,10000 (isp2):
Apr 17 06:39:13 downer scsi: [ID 107833 kern.warning] WARNING:
/sbus@a,0/QLGC,isp@2,10000 (isp2):
Apr 17 06:39:13 downer 	Target 0 reducing transfer rate
Apr 17 06:39:13 downer 	Target 0 reducing transfer rate
Apr 17 06:39:13 downer scsi: [ID 107833 kern.warning] WARNING:
/sbus@a,0/QLGC,isp@2,10000 (isp2):
Apr 17 06:39:13 downer scsi: [ID 107833 kern.warning] WARNING:
/sbus@a,0/QLGC,isp@2,10000 (isp2):
Apr 17 06:39:13 downer 	Parity Error
Apr 17 06:39:13 downer 	Parity Error
Apr 17 06:39:13 downer scsi: [ID 107833 kern.warning] WARNING:
/sbus@a,0/QLGC,isp@2,10000 (isp2):
Apr 17 06:39:13 downer scsi: [ID 107833 kern.warning] WARNING:
/sbus@a,0/QLGC,isp@2,10000 (isp2):
Apr 17 06:39:13 downer 	 Target 0 disabled wide SCSI mode
Apr 17 06:39:13 downer 	 Target 0 disabled wide SCSI mode
Apr 17 06:39:13 downer scsi: [ID 107833 kern.warning] WARNING:
/sbus@a,0/QLGC,isp@2,10000 (isp2):
Apr 17 06:39:13 downer scsi: [ID 107833 kern.warning] WARNING:
/sbus@a,0/QLGC,isp@2,10000 (isp2):
Apr 17 06:39:13 downer 	Target 1 reducing transfer rate
Apr 17 06:39:13 downer 	Target 1 reducing transfer rate
Apr 17 06:39:13 downer scsi: [ID 107833 kern.warning] WARNING:
/sbus@a,0/QLGC,isp@2,10000 (isp2):
Apr 17 06:39:13 downer scsi: [ID 107833 kern.warning] WARNING:
/sbus@a,0/QLGC,isp@2,10000 (isp2):
Apr 17 06:39:13 downer 	Parity Error
Apr 17 06:39:13 downer 	Parity Error
Apr 17 06:40:13 downer scsi: [ID 107833 kern.warning] WARNING:
/sbus@a,0/QLGC,isp@2,10000 (isp2):
Apr 17 06:40:13 downer scsi: [ID 107833 kern.warning] WARNING:
/sbus@a,0/QLGC,isp@2,10000 (isp2):
Apr 17 06:40:13 downer 	Target 2 reducing transfer rate
Apr 17 06:40:13 downer 	Target 2 reducing transfer rate
Apr 17 06:40:13 downer scsi: [ID 107833 kern.warning] WARNING:
/sbus@a,0/QLGC,isp@2,10000 (isp2):
Apr 17 06:40:13 downer scsi: [ID 107833 kern.warning] WARNING:
/sbus@a,0/QLGC,isp@2,10000 (isp2):
Apr 17 06:40:13 downer 	 Target 2 disabled wide SCSI mode
Apr 17 06:40:13 downer 	 Target 2 disabled wide SCSI mode
Apr 17 06:41:15 downer scsi: [ID 107833 kern.warning] WARNING:
/sbus@a,0/QLGC,isp@2,10000 (isp2):
Apr 17 06:41:15 downer scsi: [ID 107833 kern.warning] WARNING:
/sbus@a,0/QLGC,isp@2,10000 (isp2):
Apr 17 06:41:15 downer 	Target 2 reducing transfer rate
Apr 17 06:41:15 downer 	Target 2 reducing transfer rate
Apr 17 06:41:15 downer scsi: [ID 107833 kern.warning] WARNING:
/sbus@a,0/QLGC,isp@2,10000 (isp2):
Apr 17 06:41:15 downer scsi: [ID 107833 kern.warning] WARNING:
/sbus@a,0/QLGC,isp@2,10000 (isp2):
Apr 17 06:41:15 downer 	 Target 2 disabled wide SCSI mode
Apr 17 06:41:15 downer 	 Target 2 disabled wide SCSI mode
Apr 17 06:42:24 downer scsi: [ID 107833 kern.warning] WARNING:
/sbus@a,0/QLGC,isp@2,10000 (isp2):
Apr 17 06:42:24 downer scsi: [ID 107833 kern.warning] WARNING:
/sbus@a,0/QLGC,isp@2,10000 (isp2):
Apr 17 06:42:24 downer 	Target 2 reducing transfer rate
Apr 17 06:42:24 downer 	Target 2 reducing transfer rate
Apr 17 06:42:24 downer scsi: [ID 107833 kern.warning] WARNING:
/sbus@a,0/QLGC,isp@2,10000 (isp2):
Apr 17 06:42:24 downer scsi: [ID 107833 kern.warning] WARNING:
/sbus@a,0/QLGC,isp@2,10000 (isp2):
Apr 17 06:42:24 downer 	 Target 2 disabled wide SCSI mode
Apr 17 06:42:24 downer 	 Target 2 disabled wide SCSI mode
Apr 17 06:43:26 downer scsi: [ID 107833 kern.warning] WARNING:
/sbus@a,0/QLGC,isp@2,10000 (isp2):
Apr 17 06:43:26 downer scsi: [ID 107833 kern.warning] WARNING:
/sbus@a,0/QLGC,isp@2,10000 (isp2):
Apr 17 06:43:26 downer 	Target 2 reducing transfer rate
Apr 17 06:43:26 downer 	Target 2 reducing transfer rate
Apr 17 06:43:26 downer scsi: [ID 107833 kern.warning] WARNING:
/sbus@a,0/QLGC,isp@2,10000 (isp2):
Apr 17 06:43:26 downer scsi: [ID 107833 kern.warning] WARNING:
/sbus@a,0/QLGC,isp@2,10000 (isp2):
Apr 17 06:50:56 downer scsi: [ID 107833 kern.warning] WARNING:
/sbus@a,0/QLGC,isp@2,10000 (isp2):
Apr 17 06:50:56 downer scsi: [ID 107833 kern.warning] WARNING:
/sbus@a,0/QLGC,isp@2,10000 (isp2):
Apr 17 06:50:56 downer 	Command totals: queued=60415, completed=0,
executing=0
Apr 17 06:50:56 downer 	Command totals: queued=60415, completed=0,
executing=0
Apr 17 06:50:56 downer scsi: [ID 107833 kern.notice] 	Running commands:
Apr 17 06:50:56 downer scsi: [ID 107833 kern.notice] 	Running commands:
Apr 17 06:50:56 downer scsi: [ID 107833 kern.notice] 	Device queues:
Apr 17 06:50:56 downer scsi: [ID 107833 kern.notice] 	Device queues:
Apr 17 06:50:56 downer scsi: [ID 107833 kern.warning] WARNING:
/sbus@a,0/QLGC,isp@2,10000 (isp2):
Apr 17 06:50:56 downer scsi: [ID 107833 kern.warning] WARNING:
/sbus@a,0/QLGC,isp@2,10000 (isp2):
Apr 17 06:50:56 downer 	total_queued_io=60415, total_bad_io=60415
Apr 17 06:50:56 downer 	total_queued_io=60415, total_bad_io=60415
Apr 17 06:50:56 downer scsi: [ID 107833 kern.warning] WARNING:
/sbus@a,0/QLGC,isp@2,10000 (isp2):
Apr 17 06:50:56 downer scsi: [ID 107833 kern.warning] WARNING:
/sbus@a,0/QLGC,isp@2,10000 (isp2):
Apr 17 06:50:56 downer 	ISP: Firmware cmd timeout
Apr 17 06:50:56 downer 	ISP: Firmware cmd timeout
Apr 17 06:50:56 downer scsi: [ID 107833 kern.warning] WARNING:
/sbus@a,0/QLGC,isp@2,10000 (isp2):
Apr 17 06:50:56 downer scsi: [ID 107833 kern.warning] WARNING:
/sbus@a,0/QLGC,isp@2,10000 (isp2):
Apr 17 06:50:56 downer 	Fatal error, resetting interface
Apr 17 06:50:56 downer 	Fatal error, resetting interface


These messages happen during bootup.  The system boots just fine.  After
I've booted up targets 0 and 1 on the bus work just fine, but target 2
complains and target 3 never even shows up.  If I power-cycle the tape
drive, then only the messages about target 2 ("reducing transfer rate" and
"disabled wide SCSI mode") appear in /var/adm/messages.  I've replaced the
SBUS Qlogic SCSI controller card, the cable, the terminator, checked the
pins, and even replaced the tape drive.  Does anybody have any ideas as to
what might be causing this?  Thanks for any leads, ideas, etc.

grant

Summary:

Turns out that the external SCSI dial (the small dial that lets you select
the SCSI target number) was set to the correct SCSI target number
externally, but internally the SCSI target number was set to a duplicate
number on the SCSI chain.  So I had to 2 tape drives with the target number
of 2.  Once we got that figured out, everything worked just fine.  Took a
tape drive specialist to figure it out.

grant
Received on Fri Apr 20 20:49:52 2001

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