I am trying to checkpoint an in memory computation on one EC2 instance and then transfer the dumped images and restore them on another EC2 instance. I am using p.haul for this. Connection between the two hosts are established successfully. But just before starting the migration it is giving me the error Rsync failed . I put in some print statements in the code to see what’s happening in this case for migrating the process to another instance my service is trying to access the folder /var/lib/docker/aufs/mnt/f1607f70604e5f84ab8e9996a0df412a5bdeca65fc03f433a2c7501b7361d363 of another instance and that’s somewhere Rsync is failing. Rsync fails with the error code 12.