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Re: PERC 3/Di - aacraid driver issue on DELL PowerEdge 2650



Tobias,

When I was researching this issue, I read lots of other people's claims. As I recall, it wasn't necessarily an issue of load, so although your test results look good, I wouldn't assume you don't have a problem. My server was under virtually no load when it locked up. I read people claiming that it would occur after only a few hours, but my server took about a month before it locked up.

Norman

------------------------------------------------------
Norman Elton
Information Technology - Network Engineering
College of William & Mary
757-221-7790
On Apr 7, 2004, at 1:47 PM, Tobias Speckbacher wrote:

Figured I'd make a new thread out of this.
I realize this is the general RH list, but it seems this issue spans
across multiple versions of RH Linux including the now or soon to be
deprecated free versions.

----

For whatever its worth I tested one of my 2650's loaded with ES3
overnight.
The system has the newest kernel available from the errata provided by
Redhat (2.4.21-9EL).

What I did was:

while :; do
dd if=/dev/zero of=test count=3000000
rm -rf test
done


It creates a 1.5GB or thereabout file for me on my system, should you have a different FS blocksize the size will change.

Anyway the system stayed up all night and still is at it.
I figured if something is wrong with the aacraid driver/IO subsystem I
should see it after a while doing this test. Now I realize this doesn't
really take care of every case that can happen since this only tests
writes.


If anyone has a better idea on how to test the proper workings of a PERC
3/Di I'd appreciate your input.


-Tobias

-----Original Message-----
From: redhat-list-bounces redhat com
[mailto:redhat-list-bounces redhat com] On Behalf Of Norman Elton
Sent: Wednesday, April 07, 2004 5:41 AM
To: General Red Hat Linux discussion list
Subject: Re: Moving into Linux Enterprise- Doubts/questions

I used to have an issue with a 2650 running RH8, the system would
completely hang after a certain amount of time.

This is exactly the issue I had. The system would just hang. It turned out to be a buggy aacraid driver (the adaptec RAID driver). I ended up getting a kernel patch from Adaptec.

I don't know if this is still an issue with the latest redhat releases,
I suspect is probably still is. I would check the mailing lists on
linux.dell.com (there's an aacraid-specific list).

It's a shame that a system that's RedHat certified, running an OS
that's Dell certified, just doesn't work.

Norman

------------------------------------------------------
Norman Elton
Information Technology - Network Engineering
College of William & Mary
757-221-7790
On Apr 6, 2004, at 10:30 PM, Tobias Speckbacher wrote:

I used to have an issue with a 2650 running RH8, the system would
completely hang after a certain amount of time.

Installing an updated kernel, solved this issue for me.
I am currently in the process of deploying 9 systems with RHES 3.0, 4
of
which use the PERC 3/DI controller.

If anyone has confirmation that this is still an issue I'd appreciate
the input.

-T


-----Original Message----- From: redhat-list-bounces redhat com [mailto:redhat-list-bounces redhat com] On Behalf Of Bob Gorman Sent: Tuesday, April 06, 2004 12:54 PM To: redhat-list redhat com Subject: Re: Moving into Linux Enterprise- Doubts/questions


I installed RHEL 3 on a PowerEdge 2650, and had horrible times with
the
RAID driver. If your server runs the Perc3/Di driver, you'll want to
do
a little research before plunging into RHEL.

Can you be a little more specific? I have plans to upgrade some
PE2650
systems (w/PERC3-DI) to RHEL3 very soon.

Indeed, I will install the latest system BIOS update, and the latest
controller and back plane firmware updates, and install from the
current
RHEL3 Update 1 CD.

TIA for any insight you can share.



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