fix rootfs unmarshalling from API response

Signed-off-by: Pavel Boldyrev <627562+bpg@users.noreply.github.com>

fwprovider/test/resource_container_test.go

@@ -71,7 +71,6 @@ func TestAccResourceContainer(t *testing.T) {
 					unprivileged = true
 					disk {
 						datastore_id = "local-lvm"
-						mount_options = ["discard"]
 						size         = 4
 					}
 					mount_point {
@@ -144,6 +143,7 @@ func TestAccResourceContainer(t *testing.T) {
 					disk {
 						datastore_id = "local-lvm"
 						size         = 4
+						mount_options = ["discard"]
 					}
 					mount_point {
 						volume = "local-lvm"
@@ -180,6 +180,55 @@ func TestAccResourceContainer(t *testing.T) {
 						"description":            "my\ndescription\nvalue\n",
 						"device_passthrough.#":   "1",
 						"initialization.0.dns.#": "0",
+						"disk.0.mount_options.#": "1",
+					}),
+				),
+			},
+			{
+				// remove disk options
+				Config: te.RenderConfig(`
+				resource "proxmox_virtual_environment_container" "test_container" {
+					node_name = "{{.NodeName}}"
+					vm_id     = {{.TestContainerID}}
+					timeout_delete = 10
+					unprivileged = true
+					disk {
+						datastore_id = "local-lvm"
+						size         = 4
+					}
+					mount_point {
+						volume = "local-lvm"
+						size   = "4G"
+						path   = "mnt/local"
+					}
+					device_passthrough {
+						path = "/dev/zero"
+					}
+					description = <<-EOT
+						my
+						description
+						value
+					EOT
+					initialization {
+						hostname = "test"
+						ip_config {
+							ipv4 {
+								address = "172.16.10.10/15"
+								gateway = "172.16.0.1"
+							}
+						}
+					}
+					network_interface {
+						name = "vmbr0"
+					}
+					operating_system {
+						template_file_id = "local:vztmpl/{{.ImageFileName}}"
+						type             = "ubuntu"
+					}
+				}`, WithRootUser()),
+				Check: resource.ComposeTestCheckFunc(
+					ResourceAttributes(accTestContainerName, map[string]string{
+						"disk.0.mount_options.#": "0",
 					}),
 				),
 			},

proxmox/nodes/containers/containers_types.go

@@ -875,6 +875,8 @@ func (r *CustomRootFS) UnmarshalJSON(b []byte) error {
 			r.Volume = v[0]
 		} else if len(v) == 2 {
 			switch v[0] {
+			case "volume":
+				r.Volume = v[1]
 			case "acl":
 				bv := types.CustomBool(v[1] == "1")
 				r.ACL = &bv
@@ -902,7 +904,7 @@ func (r *CustomRootFS) UnmarshalJSON(b []byte) error {
 			case "size":
 				r.Size = new(types.DiskSize)
 
-				err := r.Size.UnmarshalJSON([]byte(v[1]))
+				err = r.Size.UnmarshalJSON([]byte(v[1]))
 				if err != nil {
 					return fmt.Errorf("failed to unmarshal disk size: %w", err)
 				}

proxmoxtf/resource/container/container.go

@@ -2310,10 +2310,6 @@ func containerRead(ctx context.Context, d *schema.ResourceData, m interface{}) d
 		// Default value of "storage" is "local" according to the API documentation.
 		disk[mkDiskDatastoreID] = "local"
 		disk[mkDiskSize] = dvDiskSize
-		disk[mkDiskMountOptions] = nil
-		disk[mkDiskACL] = dvDiskACL
-		disk[mkDiskReplicate] = dvDiskReplicate
-		disk[mkDiskQuota] = dvDiskQuota
 	}
 
 	currentDisk := d.Get(mkDisk).([]interface{})
@@ -3016,6 +3012,8 @@ func containerUpdate(ctx context.Context, d *schema.ResourceData, m interface{})
 		}
 
 		updateBody.RootFS = rootFS
+
+		rebootRequired = true
 	}
 
 	if d.HasChange(mkFeatures) {