reset: remove external containers on podman system reset

cmd/podman/system/reset.go

@@ -45,16 +45,29 @@ func init() {
 }
 
 func reset(cmd *cobra.Command, args []string) {
+	// Get all the external containers in use
+	listCtn, _ := registry.ContainerEngine().ContainerListExternal(registry.Context())
+	listCtnIds := make([]string, 0, len(listCtn))
+	for _, externalCtn := range listCtn {
+		listCtnIds = append(listCtnIds, externalCtn.ID)
+	}
 	// Prompt for confirmation if --force is not set
 	if !forceFlag {
 		reader := bufio.NewReader(os.Stdin)
-		fmt.Print(`
+		fmt.Println(`
 WARNING! This will remove:
         - all containers
         - all pods
         - all images
-        - all build cache
-Are you sure you want to continue? [y/N] `)
+        - all build cache`)
+		if len(listCtn) > 0 {
+			fmt.Println(`WARNING! The following external containers will be purged:`)
+			// print first 12 characters of ID and first configured name alias
+			for _, externalCtn := range listCtn {
+				fmt.Printf("	- %s (%s)\n", externalCtn.ID[0:12], externalCtn.Names[0])
+			}
+		}
+		fmt.Print(`Are you sure you want to continue? [y/N] `)
 		answer, err := reader.ReadString('\n')
 		if err != nil {
 			logrus.Error(err)
@@ -65,6 +78,8 @@ Are you sure you want to continue? [y/N] `)
 		}
 	}
 
+	// Purge all the external containers with storage
+	registry.ContainerEngine().ContainerRm(registry.Context(), listCtnIds, entities.RmOptions{Force: true, All: true, Ignore: true, Volumes: true})
 	// Shutdown all running engines, `reset` will hijack repository
 	registry.ContainerEngine().Shutdown(registry.Context())
 	registry.ImageEngine().Shutdown(registry.Context())

pkg/domain/entities/engine_container.go

@@ -32,6 +32,7 @@ type ContainerEngine interface {
 	ContainerInspect(ctx context.Context, namesOrIds []string, options InspectOptions) ([]*ContainerInspectReport, []error, error)
 	ContainerKill(ctx context.Context, namesOrIds []string, options KillOptions) ([]*KillReport, error)
 	ContainerList(ctx context.Context, options ContainerListOptions) ([]ListContainer, error)
+	ContainerListExternal(ctx context.Context) ([]ListContainer, error)
 	ContainerLogs(ctx context.Context, containers []string, options ContainerLogsOptions) error
 	ContainerMount(ctx context.Context, nameOrIDs []string, options ContainerMountOptions) ([]*ContainerMountReport, error)
 	ContainerPause(ctx context.Context, namesOrIds []string, options PauseUnPauseOptions) ([]*PauseUnpauseReport, error)

pkg/domain/infra/abi/containers.go

@@ -854,6 +854,10 @@ func (ic *ContainerEngine) ContainerList(ctx context.Context, options entities.C
 	return ps.GetContainerLists(ic.Libpod, options)
 }
 
+func (ic *ContainerEngine) ContainerListExternal(ctx context.Context) ([]entities.ListContainer, error) {
+	return ps.GetExternalContainerLists(ic.Libpod)
+}
+
 // ContainerDiff provides changes to given container
 func (ic *ContainerEngine) ContainerDiff(ctx context.Context, nameOrID string, opts entities.DiffOptions) (*entities.DiffReport, error) {
 	if opts.Latest {

pkg/domain/infra/tunnel/containers.go

@@ -646,6 +646,12 @@ func (ic *ContainerEngine) ContainerList(ctx context.Context, opts entities.Cont
 	return containers.List(ic.ClientCtx, options)
 }
 
+func (ic *ContainerEngine) ContainerListExternal(ctx context.Context) ([]entities.ListContainer, error) {
+	options := new(containers.ListOptions).WithAll(true)
+	options.WithNamespace(true).WithSize(true).WithSync(true).WithExternal(true)
+	return containers.List(ic.ClientCtx, options)
+}
+
 func (ic *ContainerEngine) ContainerRun(ctx context.Context, opts entities.ContainerRunOptions) (*entities.ContainerRunReport, error) {
 	con, err := containers.CreateWithSpec(ic.ClientCtx, opts.Spec, nil)
 	if err != nil {

pkg/ps/ps.go

@@ -71,18 +71,11 @@ func GetContainerLists(runtime *libpod.Runtime, options entities.ContainerListOp
 	}
 
 	if options.All && options.External {
-		externCons, err := runtime.StorageContainers()
+		listCon, err := GetExternalContainerLists(runtime)
 		if err != nil {
 			return nil, err
 		}
-
-		for _, con := range externCons {
-			listCon, err := ListStorageContainer(runtime, con, options)
-			if err != nil {
-				return nil, err
-			}
-			pss = append(pss, listCon)
-		}
+		pss = append(pss, listCon...)
 	}
 
 	// Sort the containers we got
@@ -97,6 +90,27 @@ func GetContainerLists(runtime *libpod.Runtime, options entities.ContainerListOp
 	return pss, nil
 }
 
+// GetExternalContainerLists returns list of external containers for e.g created by buildah
+func GetExternalContainerLists(runtime *libpod.Runtime) ([]entities.ListContainer, error) {
+	var (
+		pss = []entities.ListContainer{}
+	)
+
+	externCons, err := runtime.StorageContainers()
+	if err != nil {
+		return nil, err
+	}
+
+	for _, con := range externCons {
+		listCon, err := ListStorageContainer(runtime, con)
+		if err != nil {
+			return nil, err
+		}
+		pss = append(pss, listCon)
+	}
+	return pss, nil
+}
+
 // BatchContainerOp is used in ps to reduce performance hits by "batching"
 // locks.
 func ListContainerBatch(rt *libpod.Runtime, ctr *libpod.Container, opts entities.ContainerListOptions) (entities.ListContainer, error) {
@@ -231,7 +245,7 @@ func ListContainerBatch(rt *libpod.Runtime, ctr *libpod.Container, opts entities
 	return ps, nil
 }
 
-func ListStorageContainer(rt *libpod.Runtime, ctr storage.Container, opts entities.ContainerListOptions) (entities.ListContainer, error) {
+func ListStorageContainer(rt *libpod.Runtime, ctr storage.Container) (entities.ListContainer, error) {
 	name := "unknown"
 	if len(ctr.Names) > 0 {
 		name = ctr.Names[0]