On Fri, Aug 1, 2014 at 12:29 AM, German Anders <ganders at despegar.com> wrote: > Hi Ilya, > I think you need to upgrade the kernel version of that ubuntu server, > I've a similar problem and after upgrade the kernel to 3.13 the problem was > resolved successfully. Ilya doesn't need to upgrade anything ;) Larry, if you haven't upgraded yet, I'm interested to know where exactly that EIO comes from, because after setting crush tunables to legacy and disabling hashpspool on the target pool it should map fine. I'd need dmesg and the commands you issued both to flip tunables and create and map an image. Thanks, Ilya