[OpenAFS-port-darwin] Re: Many crashes on OS X 10.3

[Steve Lidie]

On Apr 14, 2004, at 9:49 PM, Aaron Rosenblum wrote:

> FWIW I have not heard widespread panic issues here at umich.  However, 
> I will start tickling my colleagues here and see what they have to 
> say.  Part of the issue may be that, at least with the 10.3 
> deployment, we are not yet using AFS for home directories.

And that appears to be key.  An AFS home dir will result in a kernel 
panic every few days (here), usually vnreclaim, but I've seen others. 
Simply having AFS available for, say, /usr/local/bin, generally works 
fine.  But actually installing apps like
Matlab often cause a kernel panic.  This with Panther ....

OTOH, with Jaquar/AFS but *local* home dirs there has never been a 
kernel panic in over a year.

On my G5 (Panther) w/AFS and a local home dir I see occasional kernel 
panics, but only after heavy AFS usage (e.g. after installing large AFS 
applications).


> Most AFS usage in the labs is just students copying the occasional 
> word document to their "AFS Space".  I would assume heavier use of AFS 
> by a wider variety of programs (not just the finder and office) would 
> exacerbate the problem.

That is my feeling.

>
> Aaron
>
> On Apr 14, 2004, at 12:59 PM, Joseph Jackson wrote:
>
>> Aaron,
>>
>> As you may have guessed by the delayed response, I haven't been 
>> intimately involved in our work on OpenAFS lately. I'm not a kernel 
>> programmer, but in the past I've done some Q/A type work to help get 
>> bugs in front of Chaskiel and Derrick. I don't have a formal role in 
>> the OpenAFS organization.
>>
>> I still play a large role in our student labs, though, and our work 
>> with 10.3 has really brought the OpenAFS port back to my front 
>> burner. Ever since 10.3.2 or so, I've noticed a number of panics 
>> during move operations. If we can't get the OpenAFS client 
>> stabilized, our environment will need major rework before we can 
>> upgrade our labs to 10.3. So I'm heavily motivated to make sure 
>> Derrick has what he needs to fix the problems. ;-)
>>
>> On another list, Surajit Bose from Stanford pointed out that 
>> SubEthaEdit reliably crashes the OpenAFS client when you save over an 
>> existing document. I assume it tickles a problem when moving the 
>> original file to the backup version with the tilde in its name. In 
>> any case, reliable ways of reproducing problems are a huge help in 
>> getting them fixed.
>>
>> Joe.
>>
>>
>> --On Friday, February 13, 2004 1:50 PM -0500 Aaron Rosenblum 
>> <arosenbl@mac.com> wrote:
>>
>>> Is Joe Jackson from CMU still involved?  I am not sure if he did the
>>> actual port or if he was responsible for deployment at CMU for OSX.  
>>> I do
>>> remember him asking some fairly in depth questions about OpenAFS/Mac 
>>> OS X
>>> at WWDC a couple years back.  Not to call you out joe, just didn't 
>>> know
>>> if you were still invested in it (AFS). :-)
>>
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