Date: Fri, 21 Jan 2000 02:00:03 -0800 (PST) From: Andy Farkas <andyf@speednet.com.au> To: freebsd-bugs@FreeBSD.org Subject: Re: kern/16049: Conner Drive Doesn't like syncronize cache (surprise) Message-ID: <200001211000.CAA47799@freefall.freebsd.org>
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The following reply was made to PR kern/16049; it has been noted by GNATS.
From: Andy Farkas <andyf@speednet.com.au>
To: "Kenneth D. Merry" <ken@kdm.org>
Cc: FreeBSD-gnats-submit@FreeBSD.ORG
Subject: Re: kern/16049: Conner Drive Doesn't like syncronize cache (surprise)
Date: Fri, 21 Jan 2000 20:50:46 +1100 (EST)
On Thu, 20 Jan 2000, Kenneth D. Merry wrote:
> > When rebooting a 3.4-RELEASE machine with a Conner drive and Adaptec
> > Controller, I get the following error message:
> >
> > (da0:ahc0:0:0:0): SYNCHRONIZE CACHE. CDB: 35 0 0 0 0 0 0 0 0 0
> > (da0:ahc0:0:0:0): ILLEGAL REQUEST asc:20,0
> > (da0:ahc0:0:0:0): Invalid command operation code
> >
> > Here are the boot messages pertaining to the disk adapter and drive:
> > ahc0: <Adaptec 2940 SCSI adapter> rev 0x03 int a irq 11 on pci0.18.0
> > ahc0: aic7870 Single Channel A, SCSI Id=7, 16/255 SCBs
> >
> > da0: <CONNER CFP1080S 4443> Fixed Direct Access SCSI-2 device
> > da0: 10.000MB/s transfers (10.000MHz, offset 15), Tagged Queueing Enabled
> > da0: 1030MB (2110812 512 byte sectors: 255H 63S/T 131C)
> >
> > >How-To-Repeat:
> >
> > halt/reboot the machine.
>
> Instead of quirking it, can you try the attached patch? Justin and I have
> a theory on why these messages might be popping up, but we're not quite
> sure.
>
I see the same error message on my system after I 'shutdown', then 'halt'.
I have two disks on the scsi bus, but it only complains about da0. (I see
the _exact_ same error message as above).
I applied your patch, but still see the same message. (exactly the same)
What I noticed though, because my da0 (100MB) is totaly dedicated to swap,
if I boot single-user without executing 'swapon', it would not show the
message during reboot. I can read/write _just_ da1, then reboot, and no
message. If I do a 'swapon' in single-user mode, I see the error message
after 'halt'ing.
In other words, if the controller does not access da0, I will not see a
message.
Some details:
uname: FreeBSD 3.4-STABLE #0: Fri Jan 21 05:41:30 EST 2000
relevent dmesg stuff:
CPU: i486 DX4 (486-class CPU)
real memory = 33554432 (32768K bytes)
ahc0: <Adaptec 284X SCSI host adapter> at 0x1c00-0x1cff irq 11 on eisa0 slot 1
ahc0: aic7770 <= Rev C, Single Channel A, SCSI Id=7, 4/255 SCBs
Probing for devices on the ISA bus:
wdc0 at 0x1f0-0x1f7 irq 14 flags 0xa0ffa0ff on isa
wdc0: unit 0 (wd0): <DSAA-3270>, multi-block-32
wd0: 258MB (528640 sectors), 944 cyls, 14 heads, 40 S/T, 512 B/S
wdc0: unit 1 (wd1): <H3256-A3>, multi-block-16
wd1: 245MB (502272 sectors), 872 cyls, 16 heads, 36 S/T, 512 B/S
Waiting 15 seconds for SCSI devices to settle
da0 at ahc0 bus 0 target 0 lun 0
da0: <QUANTUM LP105S 910109405 3.1> Fixed Direct Access SCSI-2 device
da0: 4.032MB/s transfers (4.032MHz, offset 8)
da0: 100MB (205561 512 byte sectors: 64H 32S/T 100C)
da1 at ahc0 bus 0 target 6 lun 0
da1: <QUANTUM XP34301 1051> Fixed Direct Access SCSI-2 device
da1: 10.000MB/s transfers (10.000MHz, offset 15), Tagged Queueing Enabled
da1: 4106MB (8410200 512 byte sectors: 64H 32S/T 4106C)
changing root device to wd0s1a
>
> Ken
> --
> Kenneth Merry
> ken@kdm.org
>
--
:{ andyf@speednet.com.au
Andy Farkas
System Administrator
Speednet Communications
http://www.speednet.com.au/
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