VMs fails to start after rebooting the node/hosting server

[maheshd2]

After rebooting the hosting server, we found that the VMs in down state:

[root@localhost ~]# virsh list --all
setlocale: No such file or directory
 Id   Name                        State
--------------------------------------------
 -    dev-master-1_vran-cluster   shut off
 -    dev-master-2_vran-cluster   shut off
 -    dev-master-3_vran-cluster   shut off
 -    dev-master-4_vran-cluster   shut off

But when we try to start the VMs, it fails with below error:

[root@localhost ~]# virsh start dev-master-2_vran-cluster
setlocale: No such file or directory
error: Failed to start domain dev-master-2_vran-cluster
error: Cannot access storage file '/tmp/vran-cluster.iso': No such file or directory

As a temporary workaround we just removed the '/tmp/vran-cluster.iso' reference in the domain xml and were able to start the VMs.

<disk type='file' device='cdrom'>
      <driver name='qemu' type='raw'/>
      <source file='/tmp/vran-cluster.iso'/>
      <target dev='hdb' bus='ide'/>
      <readonly/>
      <address type='drive' controller='0' bus='0' target='0' unit='1'/>
    </disk>

We need to see how we can remove this reference from the domain xml after booting up the VMs. Otherwise we have to place the iso file in a path other than 'tmp' location.