KVM Live migration finishes with errors

just started testing our proxmox cluster and we have this problem with KVM live migrations. The problem is always when we first migrate a guest from one node to another. When we migrate back we don't have this error.

Running Proxmox 2.2-32
Nodes are identical hardware
Infiniband storage network
shared storage (iscsi)

Feb 21 20:00:59 migration status: active (transferred 189637177, remaining 353685504), total 545652736) , expected downtime 0
Feb 21 20:01:01 migration status: active (transferred 225608317, remaining 317435904), total 545652736) , expected downtime 0
Feb 21 20:01:03 migration status: active (transferred 245588682, remaining 297140224), total 545652736) , expected downtime 0
Feb 21 20:01:05 migration status: active (transferred 294085561, remaining 247664640), total 545652736) , expected downtime 0
Feb 21 20:01:07 migration status: active (transferred 320607226, remaining 220876800), total 545652736) , expected downtime 0
Feb 21 20:01:09 migration status: active (transferred 333685754, remaining 207798272), total 545652736) , expected downtime 0
Feb 21 20:01:11 migration status: active (transferred 347751418, remaining 193732608), total 545652736) , expected downtime 0
Feb 21 20:01:26 migration speed: 10.89 MB/s - downtime 14485 ms
Feb 21 20:01:26 migration status: completed
Feb 21 20:01:27 ERROR: command '/usr/bin/ssh -o 'BatchMode=yes' root@10.100.1.101 qm resume 103 --skiplock' failed: exit code 2
Feb 21 20:01:29 ERROR: migration finished with problems (duration 00:00:52)
TASK ERROR: migration problems