freezing, hard locking, and debug.mpsafenet=0
Elvar
elvar at ooz.net
Tue Oct 9 09:47:37 PDT 2007
Sorry for sending this again. When I originally sent this it complained
about my reverse dns address and kicked it back to me so after I got my
reverse dns changed I sent it again but the original had gone through.
Regards,
Elvar
Elvar wrote:
> Hi there,
>
> I'm sharing my experiences with this in the hopes that it saves
> someone else many many hours of troubleshooting and headaches. A
> client of mine has a Dell Poweredge tower server with FreeBSD 6-stable
> on it which was acting as their firewall. At some point in time about
> 6 months ago the box started locking up every day or couple of days. I
> imagine this was probably after a buildworld / installworld but I
> can't remember. It would hard lock with nothing logged or any sign of
> anything, and no response from the keyboard. In my experiences this
> usually resulted in bad memory but after swapping out the memory for
> new memory the issue still persisted. As time went on I eventually
> pulled the hard drives out of the server and put them into another
> server with completely different hardware (minus the transfered hard
> drives). After bringing the install up on the other server I still had
> the hard locks. I googled like mad and tried all sorts of things to
> narrow down the problem but kept coming up with nothing. Now, I admit
> I'm not an elite user so I'm sure lots of you could probably have
> figured it out quicker. Eventually I put new hard drives into the
> original firewall (the Dell Poweredge) and did a clean install of
> FreeBSD 6.2-RELEASE. Unfortunately after bringing the box online as
> the firewall again it continued locking up. I then updated to -STABLE
> and still experienced the issue. Finally, after even more countless
> hours of googling I found this thread
> http://www.freebsdforums.com/forums/showthread.php?t=38765&page=1&pp=1
> <http://www.freebsdforums.com/forums/showthread.php?t=38765&page=1&pp=1>
> which seemed to describe the same freezing I was having. One person
> mentioned setting debug.mpsafenet=0 in /boot/loader.conf and not
> having a problem since doing so. Well, I ended up doing the same thing
> and it's been about 25 days with not one freeze / lockup.
>
> It's my understanding that the ability to even disable this has been
> taken out of 7.x, I only can hope that it's not an issue in 7.x like
> it is on some systems in 6.x. So anyway, I hope this helps someone out.
>
>
> Kind regards,
> Elvar
>
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