Greetings. This is going to be a bit vague, I'm mostly looking for
troubleshooting tips.
I recently added an Adaptec 19160 Ultra-160 SCSI controller, a Quantum
Atlas hard drive, and a Matshita CW-7503 burner to my previously all-IDE
system. The setup works fine, but every now and then my system will
lock up completely; whenever it happens, lines like this are near the
end of /var/log/messages:
Nov 15 00:31:30 gaea kernel: scsi : aborting command due to timeout :
pid 0, scsi0, channel 0, id 6, lun 0 Read Capacity 00 00 00 00 00 00 00
00 00
Nov 15 00:31:30 gaea kernel: SCSI host 0 abort (pid 0) timed out -
resetting
Nov 15 00:31:30 gaea kernel: SCSI bus is being reset for host 0 channel
0.
Nov 15 00:31:34 gaea kernel: (scsi0:0:5:0) Synchronous at 80.0
Mbyte/sec, offset 63.
Nov 15 00:31:35 gaea kernel: scsi0 channel 0 : resetting for second half
of retries.
Nov 15 00:31:35 gaea kernel: SCSI bus is being reset for host 0 channel
0.
Nov 15 00:31:35 gaea kernel: SCSI host 0 channel 0 reset (pid 0) timed
out - trying harder
Nov 15 00:31:35 gaea kernel: SCSI bus is being reset for host 0 channel
0.
Nov 15 00:31:36 gaea kernel: SCSI host 0 reset (pid 0) timed out again -
Nov 15 00:31:36 gaea kernel: probably an unrecoverable SCSI bus or
device hang.
Nov 15 00:31:39 gaea kernel: (scsi0:0:5:0) Synchronous at 80.0
Mbyte/sec, offset 63.
Nov 15 00:31:39 gaea kernel: scsi0 channel 0 : resetting for second half
of retries.
Nov 15 00:31:39 gaea kernel: SCSI bus is being reset for host 0 channel
0.
Nov 15 00:31:40 gaea kernel: SCSI host 0 channel 0 reset (pid 0) timed
out - trying harder
...and so forth. Within a few seconds, the system just stops
completely; when I got home today, my screensaver was stuck and the
system would only respond to a cold reboot.
The hard drive is the 0:5:0 device, but I've also had this happen when
0:6:0 (the CD burner) was being indicated. The Adaptec 19160 is a
single-bus controller, but the two devices are on different physical
cables (the CD-R takes a "normal" SCSI ribbon cable, while the hard
drive takes an Ultra 160-style cable), and both are terminated.
The host system is a dual P-III/500 with a SuperMicro Super P6DGE
motherboard (intel 440GX chipset).
So far, this has never happened when the system was in active use; only
when I was away from it for several hours. Don't know if that's
relevant or not.
Any ideas what I may have done wrong, or more information that would
further the troubleshooting process?
Some general information about my setup follows. Thanks for any ideas.
-m
[root@gaea linux]# uname -a
Linux gaea 2.4.0-test9 #4 SMP Wed Nov 1 17:48:41 CST 2000 i686 unknown
[root@gaea linux]# cat /etc/redhat-release
Red Hat Linux release 7.0 (Guinness)
[root@gaea linux]# cat /proc/scsi/scsi
Attached devices:
Host: scsi0 Channel: 00 Id: 05 Lun: 00
Vendor: QUANTUM Model: ATLAS_V_36_WLS Rev: 0210
Type: Direct-Access ANSI SCSI revision: 03
Host: scsi0 Channel: 00 Id: 06 Lun: 00
Vendor: MATSHITA Model: CD-R CW-7503 Rev: 1.09
Type: CD-ROM ANSI SCSI revision: 02
[root@gaea linux]# cat /proc/scsi/aic7xxx/0
Adaptec AIC7xxx driver version: 5.2.1/5.2.0
Compile Options:
TCQ Enabled By Default : Enabled
AIC7XXX_PROC_STATS : Enabled
Adapter Configuration:
SCSI Adapter: Adaptec AIC-7892 Ultra 160/m SCSI host adapter
Ultra-160/m LVD/SE Wide Controller at PCI
0/18/0
PCI MMAPed I/O Base: 0xfebff000
Adapter SEEPROM Config: SEEPROM found and used.
Adaptec SCSI BIOS: Enabled
IRQ: 10
SCBs: Active 0, Max Active 25,
Allocated 31, HW 32, Page 255
Interrupts: 164820
BIOS Control Word: 0xb8f4
Adapter Control Word: 0x6c5d
Extended Translation: Enabled
Disconnect Enable Flags: 0xffff
Ultra Enable Flags: 0x0000
Tag Queue Enable Flags: 0x0020
Ordered Queue Tag Flags: 0x0020
Default Tag Queue Depth: 24
Tagged Queue By Device array for aic7xxx host instance 0:
{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}
Actual queue depth per device for aic7xxx host instance 0:
{1,1,1,1,1,24,1,1,1,1,1,1,1,1,1,1}
Statistics:
(scsi0:0:5:0)
Device using Wide/Sync transfers at 80.0 MByte/sec, offset 63
Transinfo settings: current(10/63/1/0), goal(10/127/1/0),
user(9/127/1/2)
Total transfers 84407 (66555 reads and 17852 writes)
< 2K 2K+ 4K+ 8K+ 16K+ 32K+ 64K+
128K+
Reads: 5121 325 34832 4032 3044 17723 1478
0
Writes: 2556 1098 10347 2283 587 317 664
0
(scsi0:0:6:0)
Device using Narrow/Sync transfers at 10.0 MByte/sec, offset 8
Transinfo settings: current(25/8/0/0), goal(10/127/0/0),
user(9/127/1/2)
Total transfers 0 (0 reads and 0 writes)
< 2K 2K+ 4K+ 8K+ 16K+ 32K+ 64K+
128K+
Reads: 0 0 0 0 0 0 0
0
Writes: 0 0 0 0 0 0 0
0
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