On Thu, Mar 29, 2012 at 12:30 PM, Chris Webb <ch...@arachsys.com> wrote: > Stefan Hajnoczi <stefa...@linux.vnet.ibm.com> writes: > >> Chris and Richard: Please test this to confirm that it fixes the hang you >> reported. > > We've been testing this (v1 against qemu-kvm 1.0) today, and it's looking > very good. Thanks! > > The lock-ups during boot no longer happen, and if you severely throttle > (1MB/s, 100 req/s) a guest in the middle of a big dd, there are lots of > nasty kernel messages as it falls back to pio mode, but the guest doesn't > lock up and qemu remains responsive.
Thanks for trying it out. Regarding the guest kernel errors, they may be timeouts. The guest may consider the IDE controller buggy/dead due to how long requests take to complete under severe throttling. There's not much that can be done about that, I think. If you think the guest errors are due to something else though, please post the error messages. Stefan
