thanks, i deleted the snapshots on vol0.It looks like that it took some time for the simulator to recognize that snapshots were deleleted. I left my simulator running over night and rebooted it in the morning. Finally the node 2 started working again. I logged in to ONTAP system manager and Aggregate0 was showing full , so i added extra disks in order to increase space.
Overall your steps are correct in resolving this vol0 being full issue. Thanks for your help.