Support for network filesystems.

In my case it would be ceph but hopefully there are enough switches included
that others could be used if desired.

I've tested this with RBD volumes.

Includes fixes for feedback in in PR ( #48 )

Author: goetzk

README.md

@@ -80,7 +80,9 @@ Role Variables
         - `name`: Name to associate with the volume being created; For `file` type volumes include extension if you would like volumes created with one.
         - `file_path`: Where the image of `file` type volumes should be placed; defaults to `libvirt_volume_default_images_path`
         - `device`: `disk` or `cdrom`
-        - `capacity`: volume capacity (can be suffixed with M,G,T or MB,GB,TB, etc) (required when type is `disk`)
+        - `capacity`: volume capacity, can be suffixed with k, M, G, T, P or E when type is `network` or MB,GB,TB, etc when type is `disk` (required when type is `disk` or `network`)
+        - `auth`: Authentication details should they be required. If auth is required, `name`, `type`, `token` will need to be supplied.
+        - `source`: Where the remote volume comes from. `protocol`, `name`, `hostname` and `port` should be supplied.
         - `format`: options include `raw`, `qcow2`, `vmdk`.  See `man virsh` for the
           full range.  Default is `qcow2`.
         - `image`: (optional) a URL to an image with which the volume is initalised (full copy).
@@ -167,6 +169,19 @@ Example Playbook
                   device: 'cdrom'
                   format: 'raw'
                   target: 'hda'  # first device on ide bus
+                - name: 'networkfs'
+                  type: 'network'
+                  format: 'raw'
+                  capacity: '50G'
+                  auth:
+                    name: 'admin'
+                    type: 'ceph'
+                    token: ''
+                  source:
+                    protocol: 'rbd'
+                    name: 'rbd/bigstore'
+                    hostname: 'ceph.example.org'
+                    port: '6789'
               interfaces:
                 - network: 'br-datacentre'
 

tasks/volumes.yml

@@ -13,7 +13,7 @@
   with_items: "{{ volumes | selectattr('image', 'defined') | map(attribute='image') | list }}"
   when: "'http' not in item"
 
-- name: Ensure the VM volumes exist
+- name: Ensure the VM disk volumes exist
   script: >
     virt_volume.sh
     -n {{ item.name }}
@@ -27,11 +27,25 @@
     {% endif %}
     -a {{ ansible_check_mode }}
   with_items: "{{ volumes }}"
-  when: item.type | default(libvirt_volume_default_type) == 'volume'
+  when: item.type | default(libvirt_volume_default_device) in ['volume', 'network']
   environment: "{{ libvirt_vm_script_env }}"
   register: volume_result
   changed_when:
     - volume_result is success
     - (volume_result.stdout | from_json).changed | default(True)
   check_mode: False
   become: true
+
+- name: Ensure the VM network volumes exist
+  command: qemu-img create -f {{ item.source.protocol }} {{ item.source.protocol }}:{{ item.source.name }} {{ item.capacity }}
+  with_items: "{{ volumes }}"
+  when: item.type | default(libvirt_volume_default_type) == 'network'
+  register: volume_result_network
+  # 0 is OK, 1 is an existing image
+  failed_when: volume_result_network.rc >= 2
+  changed_when:
+    - volume_result_network is success
+    - volume_result_network.rc == 1
+  check_mode: False
+  become: true
+

templates/vm.xml.j2

@@ -35,7 +35,18 @@
       <driver name='qemu' type='{{ volume.format | default(libvirt_volume_default_format) }}'/>
       {% if volume.type | default(libvirt_volume_default_type) == 'file' %}
       <source file='{{ volume.file_path |default(libvirt_volume_default_images_path) }}/{{ volume.name}}'/>
-      {% else %}
+      {% elif volume.type is defined and volume.type == 'network' %}
+        {% if volume.auth.name is defined %}
+        <auth username='{{ volume.auth.name }}'>
+          <secret type='{{ volume.auth.type }}' uuid='{{ volume.auth.token }}'/>
+        </auth>
+        {% endif %} {# End volume.auth.name check #}
+        {% if volume.source.name is defined %}
+        <source protocol='{{ volume.source.protocol }}' name='{{ volume.source.name }}'>
+          <host name='{{ volume.source.hostname }}' port='{{ volume.source.port }}'/>
+        </source>
+        {% endif %} {# End volume.source.name check #}
+      {% else %} {# End elif volume.type is defined #}
       <source pool='{{ volume.pool }}' volume='{{ volume.name }}'/>
       {% endif %}
       {% if volume.target is undefined %}