Re: Fw: slab error in cache_free_debugcheck(): cache `sgpool-8':

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F. Poncin wrote:
Stefan Richter wrote:
Finally there is news for Initio SBP-2 bridges.
http://marc.theaimsgroup.com/?l=linux-scsi&m=114038995826749

Could you try the scsi_mod parameters mentioned there?

Alternatively, update to the latest 1394 drivers (soon to be in -mm,
[...]
On my side, the problem seems to be "solved" since mid-December / end-December (linus-git).

Curious. My 1394b INIC-2430F bridge had the following history:
 - 2.6.13-rc2 panics
 - 2.6.14 works, but why?
 - 2.6.15 panics
I ought to start testing 2.6.16-rc.

latest linus-git:
ieee1394: sbp2: sbp2_firmware_revision = 407

ieee1394: sbp2: Logged into SBP-2 device
ieee1394: Node 0-00:1023: Max speed [S400] - Max payload [2048]
Vendor: Initio Model: ST3400832A Rev: 4.07
Type: Direct-Access ANSI SCSI revision: 00
SCSI device sdc: 781422768 512-byte hdwr sectors (400088 MB)
sdc: Write Protect is off
sdc: Mode Sense: 00 13 00 00
sdc: got wrong page
sdc: assuming drive cache: write through
SCSI device sdc: 781422768 512-byte hdwr sectors (400088 MB)
sdc: Write Protect is off
sdc: Mode Sense: 00 13 00 00
sdc: got wrong page
sdc: assuming drive cache: write through
sdc: sdc1
sd 8:0:0:0: Attached scsi disk sdc

Hmm. I wonder if this is just luck.

#echo 8192 > /sys/module/scsi_mod/parameters/default_dev_flags
#modprobe sbp2

ieee1394: Error parsing configrom for node 0-00:1023
=> device not recognised.

#echo "Initio:0KLAT80:8192" > /sys/module/scsi_mod/parameters/default_dev_flags
#modprobe sbp2

ieee1394: sbp2: Driver forced to serialize I/O (serialize_io=1)
ieee1394: sbp2: Try serialize_io=0 for better performance
scsi9 : SBP-2 IEEE-1394
ieee1394: sbp2: Logged into SBP-2 device
ieee1394: Node 0-00:1023: Max speed [S400] - Max payload [2048]
Vendor: Initio Model: ST3400832A Rev: 4.07
Type: Direct-Access ANSI SCSI revision: 00
SCSI device sdc: 781422768 512-byte hdwr sectors (400088 MB)
sdc: Write Protect is off
sdc: Mode Sense: 00 13 00 00
sdc: assuming drive cache: write through
SCSI device sdc: 781422768 512-byte hdwr sectors (400088 MB)
sdc: Write Protect is off
sdc: Mode Sense: 00 13 00 00
sdc: assuming drive cache: write through
sdc: sdc1
sd 9:0:0:0: Attached scsi disk sdc

Well, apparently the default_dev_flags syntax does what I intended... :-)

Thanks for testing.
--
Stefan Richter
-=====-=-==- --=- =-=--
http://arcgraph.de/sr/
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