added taking over incomplete volume parameters

app/models/foreman_fog_proxmox/proxmox_vm_commands.rb

@@ -45,7 +45,7 @@ def create_vm(args = {})
         update_pool(vm, args[:pool]) if args[:pool]
       else
         logger.warn("create vm: args=#{args}")
-        vm = node.send(vm_collection(type)).create(parse_typed_vm(args, type))
+        vm = node.send(vm_collection(type)).create(parse_typed_vm(update_extra_volumes_definitions(args), type))
       end
       start_on_boot(vm, args)
     rescue StandardError => e

app/models/foreman_fog_proxmox/proxmox_vm_new.rb

@@ -161,7 +161,7 @@ def config_attributes(type = 'qemu')
     end
 
     def new_vm(new_attr = {})
-      new_attr = ActiveSupport::HashWithIndifferentAccess.new(new_attr)
+      new_attr = ActiveSupport::HashWithIndifferentAccess.new(update_extra_volumes_definitions(new_attr))
       type = new_attr['type']
       type ||= 'qemu'
       new_typed_vm(new_attr, type)

app/models/foreman_fog_proxmox/proxmox_volumes.rb

@@ -24,6 +24,43 @@ module ForemanFogProxmox
   module ProxmoxVolumes
     include ProxmoxVMHelper
 
+    def update_extra_volumes_definitions(data_in)
+      new_data = {}
+      data_in.each do |key,value|
+        if key != 'volumes_attributes'
+          new_data[key] = value
+        else
+          # Start to look into the data that needs to be updated
+          volumes_attributes = {}
+          value.each do |index,dev_specs|
+            nr_of_keys_found = dev_specs.keys.count
+
+            # Only if this contains only 1 set like: {"size"=>"xxGB"}
+            if #{index} > 0 && nr_of_keys_found == 1
+
+              # Copy the data from the first entry
+              newid  = "#{value['0']['controller']}#{index}"
+              newdev = {
+                'storage_type' => value['0']['storage_type'],
+                'storage'      => value['0']['storage'],
+                'controller'   => value['0']['controller'],
+                'cache'        => value['0']['cache'],
+                'device'       => index,
+                'id'           => newid,
+                'size'         => dev_specs['size'],
+              } 
+              volumes_attributes[index] = newdev
+            else
+              volumes_attributes[index] = dev_specs
+            end
+          end
+          # now add the (reworked) data back
+          new_data['volumes_attributes'] = volumes_attributes
+        end
+      end
+      return new_data
+    end
+
     def delete_volume(vm, id, volume_attributes)
       logger.info("vm #{vm.identity} delete volume #{id}")
       vm.detach(id)