Date: Sun, 23 Jul 2000 22:39:20 -0700 From: "George W. Dinolt" <gdinolt@pacbell.net> To: scsi@freebsd.org Cc: rmtodd@servalan.servalan.com, mjacob@feral.com, Gemorga2@vt.edu, mwm@mired.org Subject: (noperiph:ahc0:0:-1:-1) & forwarded message ... Message-ID: <397BD688.983DCD97@pacbell.net>
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Last week I reported on a pair of errors I have had trying to boot my
5.0-current system using the new (July 18 and later) ahc code.
Specifically
(noperiph:ahc0:0:-1:-1): SCSI bus reset delivered. 0 SCBs aborted.
panic: Bogus resid sgptr value 0xbd68609
I have done a little more investigation. My scsi chain normally contains
the following (taken from a dmesg from a kernel.GENERIC from July 16)
-----------------
Copyright (c) 1992-2000 The FreeBSD Project.
Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
The Regents of the University of California. All rights
reserved.
FreeBSD 5.0-20000716-CURRENT #0: Sun Jul 16 12:24:18 GMT 2000
root@usw2.freebsd.org:/usr/src/sys/compile/GENERIC
Timecounter "i8254" frequency 1193182 Hz
CPU: AMD-K6(tm) 3D processor (451.02-MHz 586-class CPU)
Origin = "AuthenticAMD" Id = 0x58c Stepping = 12
Features=0x8021bf<FPU,VME,DE,PSE,TSC,MSR,MCE,CX8,PGE,MMX>
AMD Features=0x80000800<SYSCALL,3DNow!>
...
ahc0: <Adaptec 2940 Ultra SCSI adapter> port 0xe000-0xe0ff mem
0xe0200000-0xe0200fff irq 9 at device 14.0 on pci0
...
pass3 at ahc0 bus 0 target 5 lun 0
pass3: <UMAX Astra 1220S V1.3> Fixed Scanner SCSI-2 device
pass3: 3.300MB/s transfers
Mounting root from ufs:/dev/ad0s2a
cd0 at ahc0 bus 0 target 3 lun 0
cd0: <YAMAHA CRW8424S 1.0g> Removable CD-ROM SCSI-2 device
cd0: 20.000MB/s transfers (20.000MHz, offset 15)
cd0: Attempt to query device size failed: NOT READY, Medium not present
- tray closed
da2 at ahc0 bus 0 target 6 lun 0
da2: <CONNER CFP2107E 2.14GB 1524> Fixed Direct Access SCSI-2 device
da2: 20.000MB/s transfers (10.000MHz, offset 8, 16bit)
da2: 2048MB (4194304 512 byte sectors: 255H 63S/T 261C)
da0 at ahc0 bus 0 target 0 lun 0
da0: <SEAGATE ST15150W 0023> Fixed Direct Access SCSI-2 device
da0: 20.000MB/s transfers (10.000MHz, offset 8, 16bit), Tagged Queueing
Enabled
da0: 4095MB (8388315 512 byte sectors: 255H 63S/T 522C)
da4 at ahc0 bus 0 target 9 lun 0
da4: <SEAGATE ST19171W 3704> Fixed Direct Access SCSI-2 device
da4: 40.000MB/s transfers (20.000MHz, offset 8, 16bit), Tagged Queueing
Enabled
da4: 8683MB (17783112 512 byte sectors: 255H 63S/T 1106C)
da3 at ahc0 bus 0 target 8 lun 0
da3: <SEAGATE ST19171W 0024> Fixed Direct Access SCSI-2 device
da3: 40.000MB/s transfers (20.000MHz, offset 8, 16bit), Tagged Queueing
Enabled
da3: 8683MB (17783112 512 byte sectors: 255H 63S/T 1106C)
da1 at ahc0 bus 0 target 4 lun 0
da1: <IBM DDRS-34560 S97B> Fixed Direct Access SCSI-2 device
da1: 20.000MB/s transfers (20.000MHz, offset 15), Tagged Queueing
Enabled
da1: 4357MB (8925000 512 byte sectors: 255H 63S/T 555C)
...
----------------
Note the pass3 device, the UMAX astra 1220s V1.3 scanner
I have one disk and the cdrw on the "internel" end of the SCSI chain off
my 2940 UW. The other four disks are in a separate box (with cooling) on
a 68 pin bus. The scanner is attached via a 68pin to 25pin
"cable/adapter" from the other external 68 pin connector on the
external box.
If I have the scanner attached, then the two errors from above appear
and the system refuses to boot. This happens whether I put the
terminator on the scanner or not.
If I remove the scanner from the chain, then the new kernel (after July
18) yields the error message
(noperiph:ahc0:0:-1:-1): SCSI bus reset delivered. 0 SCBs aborted.
still appears, but the system continues to boot and works fine
afterwords as far as I can tell.
I still would like to check all my disks for correct termination
conditions. But, since the system worked before, I am hopeful that it
will work again in its current state, with scanner attached.
If someone can give me further pointers, I would appreciate it.
Many thanks.
George Dinolt
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