24.08.2010 16:21, Stefan Hajnoczi wrote: > On Tue, Aug 24, 2010 at 12:40 PM, Kevin Wolf <kw...@redhat.com> wrote: >> Am 24.08.2010 13:02, schrieb Stefan Hajnoczi: >>> QEMU 0.12.5 has qcow2 sync metadata writes in commit >>> 37060c28e522843fbf6f7e59af745dfcb05b132c. Was the performance >>> regression spotted on 0.12.5 or 0.13? >> >> Both. You mean we should consider a 0.12.6 if we decide to revert? I >> think so far 0.12.5 was planned to be last 0.12.x release. > > Yes, especially if distros will revert the patches manually without an > upstream release. I can see arguments for either way though.
Note that for 0.12 there's no other option than to revert the whole thing. Because, well, there's no "cache=unsafe" there, not to say about it being the default. And quemu-kvm breaks the user's systems in the middle of stable series (by "breaks" I mean making their working guests unusable). /mjt
