Hi again,
I was wondering if this looks like your bug. Also, even if it's
not the same bug, the person posting does seem to indicate
that Apple did indeed respond.
http://butnotyet.tumblr.com/post/175132533/the-story-of-a-simple-and-dangerous-kernel-bug
Richard Ryan
On 10/28/10 1:08 PM, Justin Greenfield wrote:
> We experimented with running LDM on OS X, both Leopard and Snow Leopard.
> Installation is fairly straightforward, I think we had to tweak a couple of
> the perl scripts, but nothing difficult. When working, it works like a champ.
>
> But....
>
> The killer is there's a bug in OS X that locks up the product queue on a call
> to fcntl. We tried various configurations, file systems, etc, to work around
> this bug, for months and months.
>
> Sometimes it would hit the bug within a few hours of startup, sometimes it
> would go for weeks before it locked up. But inevitably, it got hung up.
> Sampling the process in this state always revealed the same thing: stuck in
> the bowels of fcntl.
>
> We encountered it on 10.5 and 10.6. We wrote all kinds of scripts to detect
> the hung process and restart the daemon, and they worked most of the time,
> but sometimes the only solution was to reboot the machine.
>
> In the end, it just wasn't going to be reliable enough, which is a true
> shame, because there are a lot of things we'd love to do with OS X. We gave
> up and ported our stuff to run on linux.
>
> It's possible that a subsequent OS X update has fixed the issue, but I
> wouldn't bet on it.
>
> Justin
>
>
> On Oct 28, 2010, at 1:01 PM, Richard A. Ryan wrote:
>
>> Hi again,
>>
>> The last thing I wrote only mentioned how dscl replaces the
>> /etc configurations. It turns out launchd/launchctl commands
>> and files also replace some of the functionality of what's in
>> /etc, and I'm guessing there are probably other things. The
>> /etc/services file's functionality has something to do with
>> launchd/launchctl rather than dscl.
>>
>> Again, for the Mac mini, if you want to do server type things
>> on it you might want to get the Mac mini preloaded with
>> Mac OS X Server because the user/group/account/networking/server
>> related command line calls are a bit hard to figure out. The
>> O'Reilly book ``Mac OS X for Unix Geeks'' doesn't seem to cover
>> everything and they also don't have a version for Snow Leopard.
>>
>> Richard Ryan
>>
>>
>>> -------- Original Message --------
>>> Subject: [ldm-users] LDM on Mac OS X
>>> Date: Wed, 27 Oct 2010 14:00:43 -0500
>>> From: Tyler Allison <tyler@xxxxxxxxxxxxxxxx>
>>> To: ldm-users@xxxxxxxxxxxxxxxx
>>> Anybody running or been successful in running LDM on Mac OS X?
>>> I'm considering playing with a MacMini as a small SOHO device running LDM.
>>> I don't want to drop $1000 on a paper weight :) So hopefully someone
>>> else has been there/done that.
>>> -Tyler
>>> _______________________________________________
>>> ldm-users mailing list
>>> ldm-users@xxxxxxxxxxxxxxxx
>>> For list information or to unsubscribe, visit:
>>> http://www.unidata.ucar.edu/mailing_lists/
>>
>> _______________________________________________
>> ldm-users mailing list
>> ldm-users@xxxxxxxxxxxxxxxx
>> For list information or to unsubscribe, visit:
>> http://www.unidata.ucar.edu/mailing_lists/
>
