ZFS causing panic

[Clayton Milos]

> Hi guys
> 
> I've had an issue for some time now. When I'm copying a lot of files over
to
> ZFS usually using SMB it causes a panic and locks up the server.
> I'm running FreeBSD 9.0-RELEASE with a custom kernel. I've just pulled
> unnecessary drivers out of the config and added:
> cpu             HAMMER
> device          pf
> device          pflog
> options         DEVICE_POLLING
> options         HZ=1000
> 
> For full disclosure I am getting these errors in the syslog which means
> there's an ECC error occurring somewhere which I am trying to locate. I
have
> replaced both of the CPU's and all of the RAM and am still getting it so
> perhaps the north bridge has bought the farm.

We have some similar HW here and we suspect either CPU or Northbridge too,
we where seeing day to day panics and a scrub would pretty much guarantee
a panic.

We also replaced the CPU's with no joy but found disabling the cores of
the CPU in the second socket made the issues go away so strengthening the
Northbridge theory.

Try disabling the cores with the following and see if it helps:-
/boot/loader.conf
hint.lapic.1.disabled="1"
hint.lapic.2.disabled="1"

Unfortunately if you have perceived corruption due to this type of issue
there's no guaranteeing what state your data is really in :(

    Regards
    Steve

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Thanks Steve

I'm giving that a try now. Luckily all of the data is backed up so I don't
mind copying it back until it panics again :)

//Clay