Re: sym53c8xx_2 regressions in 2.6.9-rc2

Re: sym53c8xx_2 regressions in 2.6.9-rc2

[Matthew Wilcox]

On Mon, Sep 27, 2004 at 04:13:26PM -0400, James Bottomley wrote:
> Do you have any ideas about this...it doesn't seem to be connected with
> domain vaildation.  The errors apparently show up during operation.

Thanks for forwarding this, James.  Rene, it would be useful for you
to submit bug reports to the maintainer directly, or even contact linux-scsi.
I don't have time to wade through the mountains of crap on linux-kernel.

> From: René Rebe <rene@rocklinux-consulting.de>
> 
> James, your recent 2.6.9-pre changes seem to cause new regressions in 
> the sym53c8xx_2 driver.
> 
> On my U30 sparc64 box I get many errors in the system log:
> 
> Sep 20 15:28:34 sundown kernel: sym0:0:0:phase change 6-7 11@c7ff7b90 
> resid=6.
> Sep 20 15:28:34 sundown last message repeated 2 times
> 
> those did not show up in any other 2.6 kernel up to .8.1 ...

When do these show up?  Are they at initialisation time or are they during
normal operation?  You report the dmesg from a 2.6.8 kernel, how does the
2.6.9-rc2 one differ?  Is the sym2 driver version 2.1.18j in both kernels?


-- 
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Re: sym53c8xx_2 regressions in 2.6.9-rc2

[René Rebe]

Hi,

Matthew Wilcox wrote:
> On Mon, Sep 27, 2004 at 04:13:26PM -0400, James Bottomley wrote:
> 
>>Do you have any ideas about this...it doesn't seem to be connected with
>>domain vaildation.  The errors apparently show up during operation.
> 
> 
> Thanks for forwarding this, James.  Rene, it would be useful for you
> to submit bug reports to the maintainer directly, or even contact linux-scsi.
> I don't have time to wade through the mountains of crap on linux-kernel.

And I'm not on any linux-* list, sorry. The next time I will write to 
linux-scsi directly.

>>On my U30 sparc64 box I get many errors in the system log:
>>
>>Sep 20 15:28:34 sundown kernel: sym0:0:0:phase change 6-7 11@c7ff7b90 
>>resid=6.
>>Sep 20 15:28:34 sundown last message repeated 2 times
>>
>>those did not show up in any other 2.6 kernel up to .8.1 ...
> 
> 
> When do these show up?  Are they at initialisation time or are they during
> normal operation?  You report the dmesg from a 2.6.8 kernel, how does the
> 2.6.9-rc2 one differ?  Is the sym2 driver version 2.1.18j in both kernels?

Both, at initialization time _and_ normal operation.

The 2.6.9-rc2 dmesg does list the same devices - but with 
"sym0:0:0:phase change 6-7 ..." between the devices beeing detected.

I'll rebuild the kernel with the defective scsi driver (I reverted the 
changes to get a functional system ...) when I'm back in the office in 
some hours. The 2.6.9-rc2 does contain the domain validation changes, I 
will take a look if the patch in 2.6.9-rc2 does change the version 
string if this matters.

Have fun,

-- 
René Rebe - Rubensstr. 64 - 12157 Berlin (Europe / Germany)
             +49 (0)30  255 897 45

sym53c8xx_2 regressions in 2.6.9-rc2

[René Rebe]

Hi James, hi all,

James, your recent 2.6.9-pre changes seem to cause new regressions in 
the sym53c8xx_2 driver.

On my U30 sparc64 box I get many errors in the system log:

Sep 20 15:28:34 sundown kernel: sym0:0:0:phase change 6-7 11@c7ff7b90 
resid=6.
Sep 20 15:28:34 sundown last message repeated 2 times
Sep 20 15:28:34 sundown kernel: sym0:0:0:phase change 6-7 11@c7ff6390 
resid=6.
Sep 20 15:28:35 sundown last message repeated 6 times
Sep 20 15:28:35 sundown kernel: sym0:0:0:phase change 6-7 11@c7ff9b90 
resid=6.
Sep 20 15:28:35 sundown kernel: sym0:0:0:phase change 6-7 11@c7ff6390 
resid=6.
Sep 20 15:28:35 sundown last message repeated 29 times
Sep 20 15:28:35 sundown kernel: sym0:0:0:phase change 6-7 11@c7ff9b90 
resid=6.
Sep 20 15:28:35 sundown last message repeated 2 times
Sep 20 15:28:35 sundown kernel: sym0:0:0:phase change 6-7 11@c7ff6390 
resid=6.
Sep 20 15:28:36 sundown last message repeated 28 times

those did not show up in any other 2.6 kernel up to .8.1 ...

Connected devices are: # cat /proc/scsi/scsi
Attached devices:
Host: scsi0 Channel: 00 Id: 00 Lun: 00
   Vendor: IBM      Model: DXHS18Y          Rev: 0430
   Type:   Direct-Access                    ANSI SCSI revision: 03
Host: scsi0 Channel: 00 Id: 06 Lun: 00
   Vendor: TEAC     Model: CD-ROM CD-532S   Rev: 1.0A
   Type:   CD-ROM                           ANSI SCSI revision: 02

With a working 2.6.8 kernel (that is the one the running right now) the 
printouts during boot are:

sym0: <875> rev 0x3 at pci 0001:00:03.0 irq 4,7e0
sym0: No NVRAM, ID 7, Fast-20, SE, parity checking
sym0: SCSI BUS has been reset.
scsi0 : sym-2.1.18j
sym0:0: FAST-20 WIDE SCSI 40.0 MB/s ST (50.0 ns, offset 15)
   Vendor: IBM       Model: DXHS18Y           Rev: 0430
   Type:   Direct-Access                      ANSI SCSI revision: 03
sym0:0:0: tagged command queuing enabled, command queue depth 16.
scsi(0:0:0:0): Beginning Domain Validation
sym0:0: FAST-20 SCSI 20.0 MB/s ST (50.0 ns, offset 16)
sym0:0: FAST-20 WIDE SCSI 40.0 MB/s ST (50.0 ns, offset 15)
scsi(0:0:0:0): Domain Validation skipping write tests
scsi(0:0:0:0): Ending Domain Validation
SCSI device sda: 35566480 512-byte hdwr sectors (18210 MB)
SCSI device sda: drive cache: write back
  /dev/scsi/host0/bus0/target0/lun0: p1 p2 p3
Attached scsi disk sda at scsi0, channel 0, id 0, lun 0
   Vendor: TEAC      Model: CD-ROM CD-532S    Rev: 1.0A
   Type:   CD-ROM                             ANSI SCSI revision: 02
scsi(0:0:6:0): Beginning Domain Validation
sym0:6: FAST-20 SCSI 20.0 MB/s ST (50.0 ns, offset 16)
scsi(0:0:6:0): Domain Validation skipping write tests
scsi(0:0:6:0): Ending Domain Validation

Sincerely yours,
   René Rebe