nfsd: Don't provision LVM if nfsd_export_fs is tmpfs

tmpfs exports don't use any kind of persistent storage, so there
is no need to set up a logical volume for them. In the cloud, this
enables the nfsd target node to avoid provisioning potentially
costly extra block storage devices.

Signed-off-by: Chuck Lever <[email protected]>

Author: chucklever

playbooks/roles/nfsd/tasks/main.yml

@@ -28,6 +28,7 @@
     tasks_from: add_initiator
   when:
     - nfsd_export_storage_iscsi|bool
+    - nfsd_export_fstype != "tmpfs"
 
 - name: Build string of devices to use as PVs
   set_fact:
@@ -47,6 +48,7 @@
     pvs: "{{ nfsd_lvm_pvs | join(',') }}"
   when:
     - nfsd_export_storage_local|bool
+    - nfsd_export_fstype != "tmpfs"
 
 - name: Create {{ nfsd_export_path }}
   become: yes