[Linux-cluster] Cannot migrate VM's

[Kluster Fsck]

I upgraded Red Hat Enterprise Linux Server release 5.6 to try and solve 
some problems with an inherited broken cluster.  After some effort I was 
able to migrate to the upgraded machine last night.  This morning I 
upgraded the second machine and all seemed to go well until I tried to 
migrate the VM's back.  The system just hangs and nothing happens 
whether I use virsh or Virtual Machine Manager.

 From the machine with the vm's currently running:

May 19 09:48:26 julius libvirtd: 09:48:26.384: error : 
qemuDomainMigrateSetMaxDowntime:11792 : invalid argument in 
qemuDomainMigrateSetMaxDowntime: unsupported flags (0xbc614e)
May 19 09:48:26 julius libvirtd: 09:48:26.400: error : 
qemuDomainMigrateSetMaxDowntime:11792 : invalid argument in 
qemuDomainMigrateSetMaxDowntime: unsupported flags (0xbc614e)
May 19 09:49:04 julius libvirtd: 09:49:04.957: error : 
qemuDomainWaitForMigrationComplete:5066 : operation failed: Migration 
was cancelled by client


 From the machine trying to migrate too:

May 19 09:43:11 justinian libvirtd: 09:43:11.682: warning : 
qemudStartup:1662 : Unable to create cgroup for driver: No such device 
or address

May 19 09:48:25 justinian libvirtd: 09:48:25.202: error : 
qemudDomainGetVcpus:5993 : Requested operation is not valid: cannot list 
vcpu pinning for an inactive domain
May 19 09:48:25 justinian libvirtd: 09:48:25.208: error : 
qemuDomainGetJobInfo:11726 : Requested operation is not valid: domain is 
not running
May 19 09:48:25 justinian libvirtd: 09:48:25.230: error : 
qemudDomainGetVcpus:5993 : Requested operation is not valid: cannot list 
vcpu pinning for an inactive domain
May 19 09:48:25 justinian libvirtd: 09:48:25.235: error : 
qemuDomainGetJobInfo:11726 : Requested operation is not valid: domain is 
not running
May 19 09:48:25 justinian libvirtd: 09:48:25.256: error : 
qemudDomainGetVcpus:5993 : Requested operation is not valid: cannot list 
vcpu pinning for an inactive domain
May 19 09:48:25 justinian libvirtd: 09:48:25.262: error : 
qemuDomainGetJobInfo:11726 : Requested operation is not valid: domain is 
not running
May 19 09:48:25 justinian libvirtd: 09:48:25.279: error : 
qemudDomainGetVcpus:5993 : Requested operation is not valid: cannot list 
vcpu pinning for an inactive domain
May 19 09:48:25 justinian libvirtd: 09:48:25.285: error : 
qemuDomainGetJobInfo:11726 : Requested operation is not valid: domain is 
not running
May 19 09:48:25 justinian libvirtd: 09:48:25.347: error : 
qemudDomainGetVcpus:5993 : Requested operation is not valid: cannot list 
vcpu pinning for an inactive domain
May 19 09:48:25 justinian libvirtd: 09:48:25.353: error : 
qemuDomainGetJobInfo:11726 : Requested operation is not valid: domain is 
not running
May 19 09:49:13 justinian libvirtd: 09:49:13.006: error : 
qemuDomainObjBeginJob:362 : Timed out during operation: cannot acquire 
state change lock
May 19 09:49:13 justinian libvirtd: 09:49:13.827: error : 
qemudDomainBlockStats:9500 : Requested operation is not valid: domain is 
not running

From:
http://libvirt.org/drvqemu.html

I tried:
mkdir /dev/cgroup
mount -t cgroup none /dev/cgroup -o devices

[root at julius vmdata]# mount -t cgroup none /dev/cgroup -o devices
mount: unknown filesystem type 'cgroup'

Any help would be appreciated.
Thank You
Ken Lowther