Bug: I have some problem in Launching my Instance and I couldn't Take my Instance which have been running Already.

While Restarting:
root@openstack:~# sudo restart libvirt-bin; sudo restart nova-network; sudo restart nova-compute; sudo restart nova-api; sudo restart nova-objectstore; sudo restart nova-scheduler; sudo restart nova-volume; sudo restart nova-consoleauth;

libvirt-bin start/running, process 1923
nova-network start/running, process 6622
restart: Unknown instance:
nova-api start/running, process 6644
nova-objectstore start/running, process 6664
nova-scheduler start/running, process 6684
nova-volume start/running, process 6705
nova-consoleauth start/running, process 6718

While Checking The : nova-manage Service list

root@openstack:~# sudo nova-manage service list
2012-11-30 16:14:57 DEBUG nova.utils [req-7e02c0a6-dea8-4bfe-bf9e-2e9f54b0a814 None None] backend <module 'nova.db.sqlalchemy.api' from '/usr/lib/python2.7/dist-packages/nova/db/sqlalchemy/api.pyc'> from (pid=4883) __get_backend /usr/lib/python2.7/dist-packages/nova/utils.py:658

Binary Host Zone Status State Updated_At
nova-scheduler openstack nova enabled :-) 2012-11-30 10:44:51
nova-compute openstack nova enabled XXX 2012-11-30 08:22:19
nova-network openstack nova enabled :-) 2012-11-30 10:44:52
nova-consoleauth openstack nova enabled :-) 2012-11-30 10:44:51
nova-cert openstack nova enabled :-) 2012-11-30 10:44:51
nova-volume openstack nova enabled :-) 2012-11-30 10:44:51

After Check the Above Command I have Following Error in the Log File

root@openstack:~# tail -f /var/log/nova/nova-compute.log (latest Error)
2012-11-30 16:23:43 TRACE nova File "/usr/lib/python2.7/dist-packages/nova/exception.py", line 114, in wrapped
2012-11-30 16:23:43 TRACE nova return f(*args, **kw)
2012-11-30 16:23:43 TRACE nova File "/usr/lib/python2.7/dist-packages/nova/virt/libvirt/connection.py", line 852, in resume_state_on_host_boot
2012-11-30 16:23:43 TRACE nova block_device_info=block_device_info)
2012-11-30 16:23:43 TRACE nova File "/usr/lib/python2.7/dist-packages/nova/virt/libvirt/connection.py", line 790, in _hard_reboot
2012-11-30 16:23:43 TRACE nova virt_dom = self._conn.lookupByName(instance['name'])
2012-11-30 16:23:43 TRACE nova File "/usr/lib/python2.7/dist-packages/libvirt.py", line 2370, in lookupByName
2012-11-30 16:23:43 TRACE nova if ret is None:raise libvirtError('virDomainLookupByName() failed', conn=self)
2012-11-30 16:23:43 TRACE nova libvirtError: Domain not found: no domain with matching name 'instance-0000006c'
2012-11-30 16:23:43 TRACE nova

root@openstack:~# tail -f /var/log/libvirt/libvirtd.log
2012-11-30 10:38:32.601+0000: 1887: error : virNetSocketReadWire:996 : End of file while reading data: Input/output error
2012-11-30 10:38:35.087+0000: 1887: error : virNetSocketReadWire:996 : End of file while reading data: Input/output error
2012-11-30 10:38:37.214+0000: 1887: error : virNetSocketReadWire:996 : End of file while reading data: Input/output error
2012-11-30 10:39:27.100+0000: 1887: error : virNetSocketReadWire:996 : End of file while reading data: Input/output error
2012-11-30 10:39:29.024+0000: 1887: error : virNetSocketReadWire:996 : End of file while reading data: Input/output error
2012-11-30 10:39:31.088+0000: 1887: error : virNetSocketReadWire:996 : End of file while reading data: Input/output error
2012-11-30 10:42:26.956+0000: 1955: info : libvirt version: 0.9.8
2012-11-30 10:42:26.956+0000: 1955: error : virDomainDefParseNode:8089 : XML error: unexpected root element <disk>, expecting <domain>
2012-11-30 10:42:26.961+0000: 1955: error : virDomainDefParseNode:8089 : XML error: unexpected root element <disk>, expecting <domain>
2012-11-30 10:42:31.014+0000: 1923: error : virNetSocketReadWire:996 : End of file while reading data: Input/output error

So kindly Check this And Can Any one help me too Resolve this Error.