On Mon, Sep 10, 2012 at 06:43:44PM +0100, Brian Candler wrote: > 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. Good news: - hot plugging the two bad drives while I/O access is going on to the other drives is fine. The other drives continue to work without a hitch. - Even removing the two bad drives while dd'ing from them was fine. I/O to the other drives was also unaffected. So this patch looks good to me. I hope it can find its way to the production Ubuntu kernel soon. Regards, Brian.
