Unable to take snapshot of NFS volume backed instance in Red Hat OpenStack Platform 10

Issue

Unable to take snapshot of NFS volume backed instance in Red Hat OpenStack Platform 10

cinder storage backend

[tripleo_nfs]
volume_driver=cinder.volume.drivers.nfs.NfsDriver
nfs_shares_config=/etc/cinder/shares-nfs.conf
nfs_mount_options=rw,sync
volume_backend_name=tripleo_nfs

# List of stores enabled (list value)
#stores=file,http
stores=glance.store.http.Store,glance.store.filesystem.Store

# Default scheme to use to store image data. The scheme must be
# registered by one of the stores defined by the 'stores' config
# option. (string value)
#default_store=file
default_store=file
(...)
filesystem_store_datadir=/var/lib/glance/images/