Help with SCSI timeout problem?
Happy New Year.
After moving my Adaptec AHA-2940U/PCI and my CDROM and Tape drive to a
new motherboard
(Triton III SIS chipset with Cyrix PR-200MX processor and 48 Megs
memory), I am now having some kind of timeout problem when I do long
accesses to the CDROM and/or
other devices. At some point during the data transfer, the CDROM or
other scsi device
locks up for a few moments, then it appears the SCSI bus resets. I put a
SCSI hard drive in the chain and rebooted Debian Linux.
I copied a bunch of files from the IDE Linux disk to the SCSI disk, and
got the timeout
problem still. Here is what was in the system messages:
Dec 31 21:32:42 keng-ppp kernel: scsi : aborting command due to timeout
: pid 3803, scsi0, channel 0, id 0, lun 0 0x0a 01 3a 15 f4 00
Dec 31 21:32:42 keng-ppp kernel: aic7xxx: (abort) Aborting scb 1, TCL
0/0/0
Dec 31 21:32:42 keng-ppp kernel: scsi : aborting command due to timeout
: pid 3804, scsi0, channel 0, id 0, lun 0 0x0a 01 3b 09 f4 00
Dec 31 21:32:42 keng-ppp kernel: aic7xxx: (abort) Aborting scb 0, TCL
0/0/0
Dec 31 21:32:59 keng-ppp kernel: scsi : aborting command due to timeout
: pid 3803, scsi0, channel 0, id 0, lun 0 0x0a 01 3a 15 f4 00
Dec 31 21:32:59 keng-ppp kernel: aic7xxx: (abort) Aborting scb 1, TCL
0/0/0
Dec 31 21:32:59 keng-ppp kernel: SCSI host 0 abort (pid 3803) timed out
- resetting
Dec 31 21:32:59 keng-ppp kernel: SCSI bus is being reset for host 0
channel 0.
Dec 31 21:32:59 keng-ppp kernel: aic7xxx: (reset) target/channel 0/0
Dec 31 21:32:59 keng-ppp kernel: aic7xxx: (abort_reset) scb state 0x1,
Data-Out phase, SCSISIGI = 0x4
Dec 31 21:32:59 keng-ppp kernel: aic7xxx: (reset_device) target/channel
-1/A, active_scb 1
Dec 31 21:32:59 keng-ppp kernel: aic7xxx: (match_scb) comparing
target/channel -1/A to scb 0/A
Dec 31 21:32:59 keng-ppp kernel: aic7xxx: (reset_device) aborting SCB 0,
TCL=0/0/0
Dec 31 21:32:59 keng-ppp kernel: aic7xxx: (match_scb) comparing
target/channel -1/A to scb 0/A
Dec 31 21:32:59 keng-ppp kernel: aic7xxx: (match_scb) comparing
target/channel -1/A to scb 0/A
Dec 31 21:32:59 keng-ppp kernel: aic7xxx: (reset_channel) Resetting
current channel A
Dec 31 21:32:59 keng-ppp kernel: aic7xxx: (reset_channel) Channel reset,
sequencer restarted
Dec 31 21:32:59 keng-ppp kernel: aic7xxx: (done_aborted_scbs) Aborting
scb 0, TCL=0/0/0
Dec 31 21:32:59 keng-ppp kernel: aic7xxx: (done_aborted_scbs) Aborting
scb 1, TCL=0/0/0
Dec 31 21:33:01 keng-ppp kernel: scsi0: Target 0, channel A, now
synchronous at 10.0MHz, offset 15.
Has anyone seen this kind of problem before? Any ideas why the same
exact hardware,
cabling, etc., would not work right with this motherboard? Any
suggestions on how
to fix this problem will be greatly appreciated.
Thanks, Ken
keng@wco.com
--
Ken Gaugler N6OSK URL: http://www.wco.com/~keng/
"The life of a Repo Man is ALWAYS INTENSE..."
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