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libvirtError: internal error process exited while connecting to monitor: char device redirected to /dev/pts/13

2011-11-25 15:23:15,509 DEBUG nova.virt.libvirt_conn [-] ---------domain is <libvirt.virdomain instance="" at="" 0x2db1098=""> from (pid=18750) _create_new_domain /opt/nova_d/nova/virt/libvirt/connection.py:1213 2011-11-25 15:23:19,136 ERROR nova.exception [-] Uncaught exception (nova.exception): TRACE: Traceback (most recent call last): (nova.exception): TRACE: File "/opt/nova_d/nova/exception.py", line 98, in wrapped (nova.exception): TRACE: return f(args, *kw) (nova.exception): TRACE: File "/opt/nova_d/nova/virt/libvirt/connection.py", line 603, in spawn (nova.exception): TRACE: domain = self._create_new_domain(xml) (nova.exception): TRACE: File "/opt/nova_d/nova/virt/libvirt/connection.py", line 1214, in _create_new_domain (nova.exception): TRACE: domain.createWithFlags(launch_flags) (nova.exception): TRACE: File "/usr/lib64/python2.6/site-packages/libvirt.py", line 372, in createWithFlags (nova.exception): TRACE: if ret == -1: raise libvirtError ('virDomainCreateWithFlags() failed', dom=self) (nova.exception): TRACE: libvirtError: internal error process exited while connecting to monitor: char device redirected to /dev/pts/13 (nova.exception): TRACE: qemu-kvm: -netdev tap,ifname=tapdff80acf-61,script=,id=hostnet0: could not open /dev/net/tun: Permission denied (nova.exception): TRACE: qemu-kvm: -netdev tap,ifname=tapdff80acf-61,script=,id=hostnet0: Device 'tap' could not be initialized (nova.exception): TRACE: (nova.exception): TRACE: 2011-11-25 15:23:19,137 ERROR nova.compute.manager [-] Instance '47' failed to spawn. Is virtualization enabled in the BIOS? Details: internal error process exited while connecting to monitor: char device redirected to /dev/pts/13 qemu-kvm: -netdev tap,ifname=tapdff80acf-61,script=,id=hostnet0: could not open /dev/net/tun: Permission denied qemu-kvm: -netdev tap,ifname=tapdff80acf-61,script=,id=hostnet0: Device 'tap' could not be initialized (nova.compute.manager): TRACE: Traceback (most recent call last): (nova.compute.manager): TRACE: File "/opt/nova_d/nova/compute/manager.py", line 424, in _run_instance (nova.compute.manager): TRACE: network_info, block_device_info) (nova.compute.manager): TRACE: File "/opt/nova_d/nova/exception.py", line 129, in wrapped (nova.compute.manager): TRACE: raise Error(str(e)) (nova.compute.manager): TRACE: Error: internal error process exited while connecting to monitor: char device redirected to /dev/pts/13 (nova.compute.manager): TRACE: qemu-kvm: -netdev tap,ifname=tapdff80acf-61,script=,id=hostnet0: could not open /dev/net/tun: Permission denied (nova.compute.manager): TRACE: qemu-kvm: -netdev tap,ifname=tapdff80acf-61,script=,id=hostnet0: Device 'tap' could not be initialized (nova.compute.manager): TRACE: