Problem with migrate virtual machines

Hi.
I have two kvm node with VMs.
I’m testing migrate VMs.
My system datastore is on LVM.
When I migrate a running VM i get the error:

Message received: LOG I 144 Successfully execute transfer manager driver operation: tm_premigrate.
Message received: LOG I 144 ExitCode: 0
Message received: LOG I 144 Successfully execute network driver operation: pre.
Message received: LOG I 144 Command execution fail: cat << EOT | /var/tmp/one/vmm/kvm/migrate ‘one-144’ ‘node2’ ‘node1’ 144 node1
Message received: LOG E 144 migrate: Command “virsh --connect qemu:///system migrate --live one-144 qemu+ssh://node2/system” failed: error: Cannot access storage file ‘/var/lib/one//datastores/129/144/disk.1’: No such file or directory
Message received: LOG E 144 Could not migrate one-144 to node2
Message received: LOG I 144 ExitCode: 1
Message received: LOG I 144 Successfully execute transfer manager driver operation: tm_failmigrate.
Message received: LOG I 144 Failed to execute virtualization driver operation: migrate.
Message received: MIGRATE FAILURE 144 Could not migrate one-144 to node2

When I stop my VM, migrate and than start, i get the error:

Message received: LOG I 141 Command execution fail: cat << EOT | /var/tmp/one/vmm/kvm/deploy ‘/var/lib/one//datastores/129/141/deployment.2’ ‘node1’ 141 node1
Message received: LOG I 141 error: Failed to create domain from /var/lib/one//datastores/129/141/deployment.2
Message received: LOG I 141 error: Cannot access storage file ‘/var/lib/one//datastores/129/141/disk.0’: No such file or directory
Message received: LOG E 141 Could not create domain from /var/lib/one//datastores/129/141/deployment.2
Message received: LOG I 141 ExitCode: 255
Message received: LOG I 141 Failed to execute virtualization driver operation: deploy.
Message received: DEPLOY FAILURE 141 Could not create domain from /var/lib/one//datastores/129/141/deployment.2

Why is it happening and how can decide the problem?

looks like storage is not shared across nodes and frontend.

Thank you for the reply.
Yes, the problem was with my shared storage.