On Wed, Jan 13, 2016 at 09:21:24AM +0100, Hannes Reinecke wrote: > We have been down that road already. It doesn't work. > There is a reason why we switched to request-based multipathing. It's worth reminding people of the original write-up explaining this switch: https://www.kernel.org/doc/ols/2007/ols2007v2-pages-235-244.pdf (and that since that was written, there have been plenty of changes, both to the request-based code itself and the bio-based path which Kent streamlined). Alasdair -- To unsubscribe from this list: send the line "unsubscribe linux-block" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html