On Mon, Jun 25, 2012 at 11:32:13AM +0000, Fernando Frediani (Qube) wrote: > I am now still testing the write performance with both qcow2 and raw, cache none and writeback and as far as I can tell it's not good at all. Indeed. Using cache=none,io=native works wonders for KVM direct to disk, but I can't get it to work at all - something to do with O_DIRECT support.
