On Mon, Sep 10, 2012 at 09:39:18AM +0100, Brian Candler wrote: > On Mon, Sep 10, 2012 at 09:29:25AM +0800, Jack Wang wrote: > > below patch should fix your bug. > > Thank you Jack - that was a very quick response! I'm building a new kernel > with this patch now and will report back. It has been running fine for the last 7 hours or so. I have purposely sent some dd reads to the two failed drives in the server - I see the errors on those drives in dmesg, but activity on the remaining drives has not been affected. (The remaining drives are in an md raid0 array loaded by running 4 instances of bonnie++) Tomorrow, when I have physical access to the machine, I'll try hot-plugging the two failed drives as well. Regards, Brian.