Just a quick FYI for other people in a similar situation... We were recently testing Multipath under OpenSuSE via an LSI SAS controller that uses the mptsas driver. It would fail over to an alternate path, but would give a kernel oops and then would have to be hard booted before it would fail back. It looks to be a bug in the mptsas driver in the OpenSuSE kernel, and I was able to resolve it by building 2.6.29.4.

I hadn't found mention of this specific issue on google, but I did find that there have been a lot of changes to the mptsas driver. The oopses are gone after the upgrade to this new kernel.
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