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Bug 61480 - Writing to a i2o raid device (Intel STL2 Motherboard)
Writing to a i2o raid device (Intel STL2 Motherboard)
Product: Red Hat Linux
Classification: Retired
Component: kernel (Show other bugs)
i686 Linux
medium Severity high
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Assigned To: Arjan van de Ven
Brian Brock
Depends On:
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Reported: 2002-03-20 07:17 EST by Marius Bezuidenhout
Modified: 2007-04-18 12:41 EDT (History)
1 user (show)

See Also:
Fixed In Version:
Doc Type: Bug Fix
Doc Text:
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Clone Of:
Last Closed: 2003-06-08 12:48:41 EDT
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Regression: ---
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RHEL 7.3 requirements from Atomic Host:
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Description Marius Bezuidenhout 2002-03-20 07:17:13 EST
From Bugzilla Helper:
User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0; T312461; Q312461)

Description of problem:
When using the standard kernel & modules it seems like data block are not being 
flushed to disk. The i2o drivers hangs.

Version-Release number of selected component (if applicable):2.4.7-10

How reproducible:

Steps to Reproduce:
1.Run the 2.4.7-10 sandard kernel and dump a large amount (>100MB) to disk.

Actual Results:  The machine is unable to read or write any data to disk.

Additional info:
Comment 1 Arjan van de Ven 2002-03-20 07:22:56 EST
for i2o it is recommended to use the erratum kernel 2.4.9-31.
Comment 2 Marius Bezuidenhout 2002-03-20 14:09:46 EST
Version-Release number of selected component (if applicable):2.4.9-31

Same problem
Comment 3 Dax Kelson 2002-03-26 18:57:58 EST
I can reproduce the problem on two different boxes.  The boxes are Intel Quad
Xeon (P3), the platform is the "4-way Intel SRKA4".

They use the Intel Server i2o RAID U3-1 controller.

With the 2.4.9-13 errata kernel, I did NOT have the problem.  I never tried the
-21 errata kernel, but the 2.4.9-31 errata kernel definately has the hang.
Comment 4 Alan Cox 2002-03-26 19:15:46 EST
I've got a collection of known problems with the intel SCU2. Intel have
discontinued it and don't appear keen on helping debug it. The traces I have
show us issuing the card a command and the board then stopping talking to us.
Its definitely related to long linear writes.

I've been doing a fair bit of I2O rewriting to clean up all the crud and have
fixed a few things along the way. Unfortunately I don't think I've fixed
anything which would explain why this specific card fails

Comment 5 Dax Kelson 2002-03-26 19:18:02 EST
I take back the comment about -13 working.  I just rebooted to it and tried to
copy a 500MB apache log file located on the raid volume to another dir on the
raid volume.

The new file stopped growing after about 190MB or so.  The "cp" command became
unkillable even with '-9'.

ps -eo name,wchan showed the cp in "lock_page".

Comment 6 Mike McLean 2003-01-02 13:58:10 EST
This bug has been inappropriately marked MODIFIED. Please review the bug life
cycle information at 

Changing bug status to ASSIGNED.
Comment 7 Alan Cox 2003-06-08 12:48:41 EDT
There is simply insufficient info to fix this problem. Plus I am informed by
Intel that their later firmware no longer uses i2o but gdth

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