Re: [Qemu-devel] [Qemu-block] [RFC PATCH 0/7] Fix transactional snapshot with virtio-blk dataplane

2015-05-08 Thread Stefan Hajnoczi
On Thu, May 07, 2015 at 02:43:43PM +0100, Stefan Hajnoczi wrote: > On Wed, May 06, 2015 at 07:23:32PM +0800, Fam Zheng wrote: > > Reported by Paolo. > > > > Unlike the iohandler in main loop, iothreads currently process the event > > notifier used as virtio-blk ioeventfd in all nested aio_poll. Th

Re: [Qemu-devel] [Qemu-block] [RFC PATCH 0/7] Fix transactional snapshot with virtio-blk dataplane

2015-05-07 Thread Stefan Hajnoczi
On Wed, May 06, 2015 at 07:23:32PM +0800, Fam Zheng wrote: > Reported by Paolo. > > Unlike the iohandler in main loop, iothreads currently process the event > notifier used as virtio-blk ioeventfd in all nested aio_poll. This is > dangerous > without proper protection, because guest requests coul