Comment 4 for bug 1644554

This example message is displayed as pop up in Horizon, Mitaka release:
Error: Failed to perform requested operation on instance "osbackup", the instance has an error status: Please try again later [Error: Unexpected error while running command. Command: sudo nova-rootwrap /etc/nova/rootwrap.conf scsi_id --page 0x83 --whitelisted /dev/disk/by-path/ip-172.31.1.16:3260-iscsi-iqn.2010-10.org.openstack:volume-a0069ddf-f99d-48bf-932f-fe2ad5a7aa2e-lun-1 Exit code].