[pve-devel] iothread support

[Dietmar Maurer]

> To enable iothreads I added this to my vm.conf:
> args: -object iothread,id=iothread0 -drive
> file=/dev/drbd2-vm7-vm8/vm-109-disk-5,if=none,id=drive-virtio4,cache=none,discard=on,aio=native,detect-zeroes=unmap
> -device
> virtio-blk-pci,drive=drive-virtio4,id=virtio4,bus=pci.0,addr=0xe,iothread=iothread0

AFAIK Alexandre is working on that. But be warned, features like backup are not
thread save, so 
you will get garbage if you run backups when iothread are enabled.