Date: Tue, 1 Mar 2016 22:08:58 +0000 From: Steven Hartland <killing@multiplay.co.uk> To: freebsd-scsi@freebsd.org Subject: Re: mpr(4) SAS3008 Repeated Crashing Message-ID: <56D612FA.6090909@multiplay.co.uk> In-Reply-To: <56D5FDB8.8040402@freebsd.org> References: <56D5FDB8.8040402@freebsd.org>
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Initial ideas would be bad signalling.
If you have the option to drop the speeds down and that helps then
almost certainly the case.
The original mfi driver was very bad at recovering from issues like this
too, I spent over a month fixing and patching it to get it working
reliably when there where hardware related issues. In my case it turned
out the be a dodge CPU causing memory corruption but you'll get similar
behaviour from badly designed installs, particularly with expanders in
play for high speed devices (6-12Gbps) link speed.
Regards
Steve
On 01/03/2016 20:38, Sean Bruno wrote:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA512
>
> We're starting to look into cabling and whatnot on a group of
> Supermicro hosts we're using after repeatedly running into a
> crash/timeout that more or less looks like the following capture from
> the serial console:
>
> https://people.freebsd.org/~sbruno/mpr_stable10.txt
>
> sean
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