OpenStack创建VM的时候报错

报错信息如下：
Instance building... 0% complete
Error building instance操作步骤如下：root@king:~# nova listroot@king:~# nova-manage service list
Binary           Host        Zone             Status     State Updated_At
nova-consoleauth king        nova             enabled    :-)   2013-01-15 02:04:38
nova-console     king        nova             enabled    :-)   2013-01-15 02:04:38
nova-scheduler   king        nova             enabled    :-)   2013-01-15 02:04:37
nova-compute     king        nova             enabled    :-)   2013-01-15 02:04:41
nova-volume      king        nova             enabled    :-)   2013-01-15 02:04:38
nova-network     king        nova             enabled    :-)   2013-01-15 02:04:38root@king:~# nova list
+----+------+--------+----------+
| ID | Name | Status | Networks |
+----+------+--------+----------+
+----+------+--------+----------+
root@king:~# nova image-list
+--------------------------------------+-----------------------------+--------+--------+
|                  ID                  |             Name            | Status | Server |
+--------------------------------------+-----------------------------+--------+--------+
| 41a15b7d-d4c6-434f-9fd7-54da57618f1a | Ubuntu12.04-amd64-test      | ACTIVE |        |
| 80ab3716-d264-478b-86fe-65fee000a732 | Ubuntu 12.04 cloudimg amd64 | ACTIVE |        |
| abe2431b-0a18-446b-b1e3-d570e0d27dbc | Ubuntu 11.10 cloudimg amd64 | ACTIVE |        |
| c19cf1a1-8b1d-41a2-b8d7-3d470308a30f | cirrOS-0.3.0-x86_64         | ACTIVE |        |
+--------------------------------------+-----------------------------+--------+--------+
root@king:~# nova flavor-list
+----+-------------+-----------+------+-----------+------+-------+-------------+
| ID |     Name    | Memory_MB | Disk | Ephemeral | Swap | VCPUs | RXTX_Factor |
+----+-------------+-----------+------+-----------+------+-------+-------------+
| 1  | m1.tiny     | 512       | 0    | 0         |      | 1     | 1.0         |
| 2  | m1.small    | 2048      | 10   | 20        |      | 1     | 1.0         |
| 3  | m1.medium   | 4096      | 10   | 40        |      | 2     | 1.0         |
| 4  | m1.large    | 8192      | 10   | 80        |      | 4     | 1.0         |
| 5  | m1.xlarge   | 16384     | 10   | 160       |      | 8     | 1.0         |
| 6  | m1.minitest | 384       | 1    | 1         |      | 1     | 1.0         |
+----+-------------+-----------+------+-----------+------+-------+-------------+
root@king:~# nova keypair-list
+------+-------------------------------------------------+
| Name |                   Fingerprint                   |
+------+-------------------------------------------------+
| key1 | cd:50:6c:5c:37:5a:94:00:2c:b6:a4:7d:3b:56:89:18 |
| key5 | 72:c5:20:80:9d:72:e4:25:49:e3:ca:83:f7:c9:45:08 |
+------+-------------------------------------------------+前面一切都正常，但是创建虚拟机时报错，信息如下
root@king:~# nova boot --poll --flavor 2 --image 41a15b7d-d4c6-434f-9fd7-54da57618f1a --key_name key1 test2
+-------------------------------------+--------------------------------------+
|               Property              |                Value                 |
+-------------------------------------+--------------------------------------+
| OS-DCF:diskConfig                   | MANUAL                               |
| OS-EXT-SRV-ATTR:host                | king                                 |
| OS-EXT-SRV-ATTR:hypervisor_hostname | None                                 |
| OS-EXT-SRV-ATTR:instance_name       | instance-00000005                    |
| OS-EXT-STS:power_state              | 0                                    |
| OS-EXT-STS:task_state               | scheduling                           |
| OS-EXT-STS:vm_state                 | building                             |
| accessIPv4                          |                                      |
| accessIPv6                          |                                      |
| adminPass                           | LeY9Cg8P3wic                         |
| config_drive                        |                                      |
| created                             | 2013-01-15T02:21:29Z                 |
| flavor                              | m1.small                             |
| hostId                              |                                      |
| id                                  | 4c7cd69d-27f1-4ac6-9655-67e391ef1847 |
| image                               | Ubuntu12.04-amd64-test               |
| key_name                            | key1                                 |
| metadata                            | {}                                   |
| name                                | test2                                |
| progress                            | 0                                    |
| status                              | BUILD                                |
| tenant_id                           | c8e59a4ee56e49119eee943a1e91a983     |
| updated                             | 2013-01-15T02:21:29Z                 |
| user_id                             | 26bb0e34e8154a77a354744b77e7fc2b     |
+-------------------------------------+--------------------------------------+Instance building... 0% complete
Error building instance
root@king:~#openstackubuntu