Hi Adivya, not an nfs expert but I'd say vers=4 and nfsvers=4 options are redundant. Jaime On 24/06/2024 10:39, Adivya Singh wrote:

Hi Team,

I am trying to configure the Cinder Volume service with NFS server as a backend and this is my user_variables File

cinder_backends:   default:     volume_backend_name: nfs     volume_driver: cinder.volume.drivers.nfs.NfsDriver     nfs_shares_config: /etc/cinder/nfs_shares     nfs_qcow2_volumes: true     nfs_mount_options: vers=4,nfsvers=4,noatime,rw,bg,intr,async,timeo=60     nfs_snapshot_support: true     shares:       - ip: 172.29.244.103         share: /cinder/volume

My NFS server Configuration is Like this

/img/glance 172.29.244.0/22(rw,insecure,sync,no_subtree_check,no_root_squash) <http://172.29.244.0/22(rw,insecure,sync,no_subtree_check,no_root_squash)> /cinder/volume 172.29.244.0/22(vrw,insecure,sync,no_subtree_check,no_root_squash) <http://172.29.244.0/22(vrw,insecure,sync,no_subtree_check,no_root_squash)>

 now what i am seeing is below error

 2024-06-24 08:11:42.892 4807 ERROR cinder.volume.drivers.remotefs [None req-85e0d72a-f403-4c8e-8880-1ced0413f760 - - - - - -] Exception during mounting NFS mount failed for share 172.29.244.103:/cinder/volume. Error - {'nfs': "Unexpected error while running command.\nCommand: sudo cinder-rootwrap /etc/cinder/rootwrap.conf mount -t nfs -o vers=4,nfsvers=4,noatime,rw,bg,intr,async,timeo=60 172.29.244.103:/cinder/volume /var/lib/cinder/mnt/cd53d1ffa6d608fee908e8f1668ce63d\nExit code: 32\nStdout: ''\nStderr: 'mount.nfs: multiple version options not permitted\\n'"}: cinder.exception.NfsException: NFS mount failed for share 172.29.244.103:/cinder/volume. Error - {'nfs': "Unexpected error while running command.\nCommand: sudo cinder-rootwrap /etc/cinder/rootwrap.conf mount -t nfs -o vers=4,nfsvers=4,noatime,rw,bg,intr,async,timeo=60 172.29.244.103:/cinder/volume /var/lib/cinder/mnt/cd53d1ffa6d608fee908e8f1668ce63d\nExit code: 32\nStdout: ''\nStderr: 'mount.nfs: multiple version options not permitted\\n'"}

Any clue on this, How to fix it

Regards Adivya Singh

-- Jaime