You may try to get a statistics, WHO and in WHICH CONFIGURATIONS had this
bug. For example, I never saw it in the lab, and our data center in Canada
never saw it in production, but we all use iSCSI and ext3/ASM (and don't use
multipath software because iSCSI have embedded reliability).
I don't think, that this problem exists in all configurations - if so, they
in SuSe was able to find it many month ago. On the other hand,
you have a customer, have exact configuration with exact description - so
it's a matter of time to reproduce it.
What's possible here, as a factor, raising this bug:
- multipath IO
- specific file system
- specific IO scheduler
- specific kernel parameters (unlikely, but who knows)
- specific response, coming from SAN storage under special conditions (so
that oter SAN storage wil not show this bug).
I am testing few new servers now, and I will try to get this bug running
TPCC tests, BUT the chances to have it are low.
----- Original Message -----
From: "Arun Singh" <Arun.Singh@(protected)>
To: "Frank Westheider" <frank.westheider@(protected)>
Cc: "'Anton Dischner'" <Anton.Dischner@(protected)>;
<suse-oracle@(protected)>
Sent: Tuesday, January 09, 2007 11:41 AM
Subject: Re: AW: [suse-oracle] Novell - it is VERY SERIOUS! Weshouldadvise
against using SuSe and Oracle if
Hi Frank,
I can understand the frustration here as I am following this in the
bugzilla. You are right in asserting the complexity of the bug.
Regards,
Arun
>>> On 1/9/2007 at 11:11 AM, "Frank Westheider"
<frank.westheider@(protected)>
wrote:
> Hi Arun,
>
> Sorry...but cool down is not an option.
>
> We have this bug on 3 machines since beginning of september (!!!) and
opened
> novell and oracle support-cases....without any success/effort.
>
> We escalated these cases at novell and got 2 kernel-ptf-fixes...we
tested
> both and diffed the ptf-kernel-source with the original buggy
> kernel-source...and even we saw, that the difference were not
concerning the
> aio-kernel-part.
>
> We can reproduce the problem (and wrote this to the support too) with
heavy
> async-io-load over a duration of several days (batch-processes). So i
think,
> this would be possible to Novell/Oracle/the kernel-guys as well with
simple
> db-jobs using aio and firing until the aio-bug is shown....
>
> Head-shaking about the support...beginning of september and no really
effort
> to fix this thing. I hope you know, what aio is doing for really
busy
> databases...
>
> Frank
>
> -----Ursprüngliche Nachricht-----
> Von: Arun Singh [mailto:Arun.Singh@(protected)]
> Gesendet: Dienstag, 9. Januar 2007 16:34
> An: suse-oracle@(protected)
> Betreff: RE: [suse-oracle] Novell - it is VERY SERIOUS! We
shouldadvise
> against using SuSe and Oracle if suc
>
> Cool down folks. Do any of you have any easy way to trigger this
kernel bug?
> I can promise fix will take no time, If we can find a way to simulate
this
> bug internally. SUSE support/kernel team is aware of the seriousness
of this
> bug.
>
> -Arun
>
>
>
>>>> On 1/9/2007 at 1:16 AM, "Yoav Givon" <YGivon@(protected):
>> I strongly support you Alexei on this one. This is not very
business
>> like and I believe Novell Officials should make some strong
commitment
>> here other wise they will loose us . Loud and Clear.
>>
>> Yoav Givon
>>
>> -----Original Message-----
>> From: Alexei_Roudnev [mailto:Alexei_Roudnev@(protected)]
>> Sent: Monday, January 08, 2007 10:40 PM
>> To: Anton Dischner; Didier Boiteux
>> Cc: SuSE MailingList
>> Subject: [suse-oracle] Novell - it is VERY SERIOUS! We should
advise
>> against using SuSe and Oracle if such bugs are not fixed PROMPTLY!!
Re:
>> AW: [suse-oracle] kernel bug
>>
>> This is a critical bug - why it takes so long to fix it?
>>
>> Novell is not primary Linux in Oracle (it is not tested with it
>> automatically by internal users, as they do with RHEL4.4), so it
makes
>> a very important to fix such problems ASAP when they arise!)
>>
>>
>> ----- Original Message -----
>> From: "Anton Dischner" <Anton.Dischner@(protected)>
>> To: "Didier Boiteux" <dboiteux@(protected)>
>> Cc: "SuSE MailingList" <suse-oracle@(protected)>
>> Sent: Monday, January 08, 2007 12:54 AM
>> Subject: Re: AW: [suse-oracle] kernel bug
>>
>>
>>> Hi,
>>>
>>> we had a kernel crash with a system which had the last kernel
patches
>>> installed.
>>>
>>> Kernel 2.6.5-7.283 did -not- fix the kernel BUG at fs/aio.c:733
>>> with bug number 165140
>>>
>>> regards,
>>>
>>> Toni
>>>
>>>
>>> --
>>>
+-----------------------------------------------------------------+
>>> | Anton Dischner, Unix admin, Oracle-DBA Phone: +49 89
70953202|
>>> | Institut fuer Klinische Chemie Fax : +49 89
70958888|
>>> | Klinikum Grosshadern Home : +49 89
69708766|
>>> | Ludwig Maximilians Universitaet Muenchen Mobil: +49 172
8388880|
>>> | 81366 Muenchen Germany
|
>>> | Marchioninistr. 15 Anton.Dischner"at"med.uni-muenchen.de
|
>>>
+-----------------------------------------------------------------+
>>>
>>>
>>>
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>>> Please see http://www.suse.com/oracle/ before posting
>>>
>>>
>>
>
>
>
>
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