There is a VG with 5 GB disk assigned for 2 Linux Machines by VM name, upon restart of VMs this disk gets disconnected, to reconnect the disk, I have tried removing the VMs from VG and added again, the disks started showing up fine.
In the linux maching the NFS mounts are saved as persistant already.
Please let me know if this is a known issues as all other VGs with same configurations are working perfectly fine.