[ubuntu] Cannot start KVM guest - Error Starting Domain

Can someone help me get started on solving this. I have a ubuntu 14.04 server as kvm host running ubuntu 14.04 guests. One of the quests will not start. I have been searching and found nothing - I do not have CDROM or monitor connected to host machine. Please help - this is my mail server. One thing I have noticed is the time in the logs (below) is 10-15 00:23:11 but the time on the server itself is 10-14 21:04? I have tried rebooting the host

Also my other kvm quest is running fine.

When I try to start it from virt-manager I get the following:

Error starting domain: cannot read header '/dev/vmstage1/mail': Input/output error


Traceback (most recent call last):
File "/usr/share/virt-manager/virtManager/asyncjob.py", line 96, in cb_wrapper
callback(asyncjob, *args, **kwargs)
File "/usr/share/virt-manager/virtManager/asyncjob.py", line 117, in tmpcb
callback(*args, **kwargs)
File "/usr/share/virt-manager/virtManager/domain.py", line 1162, in startup
self._backend.create()
File "/usr/lib/python2.7/dist-packages/libvirt.py", line 866, in create
if ret == -1: raise libvirtError ('virDomainCreate() failed', dom=self)
libvirtError: cannot read header '/dev/vmstage1/mail': Input/output error

Under libvirt logs - same error:

2014-10-15 00:23:11.419+0000: 2133: error : qemuAutostartDomain:292 : Failed to autostart VM 'mail': cannot read header '/dev/vmstage1/mail': Input/output error
2014-10-15 00:23:25.945+0000: 2123: error : virStorageFileGetMetadataFromFDInternal:1000 : cannot read header '/dev/vmstage1/mail': Input/output error
2014-10-15 00:26:39.993+0000: 2126: error : virStorageFileGetMetadataFromFDInternal:1000 : cannot read header '/dev/vmstage1/mail': Input/output error
2014-10-15 00:48:19.160+0000: 2124: error : virStorageFileGetMetadataFromFDInternal:1000 : cannot read header '/dev/vmstage1/mail': Input/output error
2014-10-15 00:52:31.394+0000: 2120: error : qemuMonitorIO:656 : internal error: End of file from monitor
2014-10-15 00:54:50.969+0000: 2137: info : libvirt version: 1.2.2
2014-10-15 00:54:50.969+0000: 2137: error : virStorageFileGetMetadataFromFDInternal:1000 : cannot read header '/dev/vmstage1/mail': Input/output error
2014-10-15 00:54:50.987+0000: 2137: error : qemuAutostartDomain:292 : Failed to autostart VM 'mail': cannot read header '/dev/vmstage1/mail': Input/output error
2014-10-15 00:55:17.685+0000: 2128: error : virStorageFileGetMetadataFromFDInternal:1000 : cannot read header '/dev/vmstage1/mail': Input/output error
2014-10-15 01:00:17.563+0000: 2128: error : virStorageFileGetMetadataFromFDInternal:1000 : cannot read header '/dev/vmstage1/mail': Input/output error



Thank you in advance