Merge pull request #3443 from adrianreber/rootfs-changes-migration

Include changes to the container's root file-system in the checkpoint archive

cmd/podman/checkpoint.go

@@ -46,6 +46,7 @@ func init() {
 	flags.BoolVarP(&checkpointCommand.All, "all", "a", false, "Checkpoint all running containers")
 	flags.BoolVarP(&checkpointCommand.Latest, "latest", "l", false, "Act on the latest container podman is aware of")
 	flags.StringVarP(&checkpointCommand.Export, "export", "e", "", "Export the checkpoint image to a tar.gz")
+	flags.BoolVar(&checkpointCommand.IgnoreRootfs, "ignore-rootfs", false, "Do not include root file-system changes when exporting")
 	markFlagHiddenForRemoteClient("latest", flags)
 }
 

cmd/podman/cliconfig/config.go

@@ -92,6 +92,7 @@ type CheckpointValues struct {
 	All            bool
 	Latest         bool
 	Export         string
+	IgnoreRootfs   bool
 }
 
 type CommitValues struct {
@@ -433,6 +434,7 @@ type RestoreValues struct {
 	TcpEstablished bool
 	Import         string
 	Name           string
+	IgnoreRootfs   bool
 }
 
 type RmValues struct {

cmd/podman/restore.go

@@ -45,6 +45,7 @@ func init() {
 	flags.BoolVar(&restoreCommand.TcpEstablished, "tcp-established", false, "Restore a container with established TCP connections")
 	flags.StringVarP(&restoreCommand.Import, "import", "i", "", "Restore from exported checkpoint archive (tar.gz)")
 	flags.StringVarP(&restoreCommand.Name, "name", "n", "", "Specify new name for container restored from exported checkpoint (only works with --import)")
+	flags.BoolVar(&restoreCommand.IgnoreRootfs, "ignore-rootfs", false, "Do not apply root file-system changes when importing from exported checkpoint")
 
 	markFlagHiddenForRemoteClient("latest", flags)
 }
@@ -60,8 +61,12 @@ func restoreCmd(c *cliconfig.RestoreValues, cmd *cobra.Command) error {
 	}
 	defer runtime.DeferredShutdown(false)
 
+	if c.Import == "" && c.IgnoreRootfs {
+		return errors.Errorf("--ignore-rootfs can only be used with --import")
+	}
+
 	if c.Import == "" && c.Name != "" {
-		return errors.Errorf("--name can only used with --import")
+		return errors.Errorf("--name can only be used with --import")
 	}
 
 	if c.Name != "" && c.TcpEstablished {