试图用virt-manager安装kvm vm，我得到这个错误。 这台机器有16GB的内存，我input了4096MB。 这里有什么问题？
Unable to complete install '<class 'libvirt.libvirtError'> operation failed: could not query memory balloon allocation Traceback (most recent call last): File "/usr/share/virt-manager/virtManager/create.py", line 1571, in do_install vm.startup() File "/usr/share/virt-manager/virtManager/domain.py", line 1297, in startup self._update_status() File "/usr/share/virt-manager/virtManager/domain.py", line 1902, in _update_status info = self.get_info() File "/usr/share/virt-manager/virtManager/domain.py", line 1212, in get_info return self._backend.info() File "/usr/lib/python2.6/dist-packages/libvirt.py", line 766, in info if ret is None: raise libvirtError ('virDomainGetInfo() failed', dom=self) libvirtError: operation failed: could not query memory balloon allocation ' 如果你想支持更多的内存，你也应该安装包kvm ，它与你的debian版本相关：在debian 7（wheezy）上安装kvm，你应该运行这个命令：
# apt-get install qemu-kvm libvirt-bin virtinst
但是在debian 6（sqeeze）上安装kvm，你应该运行这个命令：
# apt-get install kvm qemu-kvm libvirt-bin virtinst
问题解决了：
你最多可以用qemu设置4095公羊