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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