Additional container metadata from containerd

containerd structures the internal metadata differently. For a restore
the status.dump file is also necessary.

The status.dump file contains the content of:

  crictl inspect <CTR-ID> | jq ".status"

and the information is needed during restore to get container
annotations and metadata. CRI-O in contrast has this data available
as metadata in config.dump. As containerd has this information somewhere
else it needs to be saved during checkpointing for a successful restore.

Signed-off-by: Adrian Reber <[email protected]>

lib/metadata.go

@@ -16,6 +16,7 @@ const (
 	// container archive
 	ConfigDumpFile             = "config.dump"
 	SpecDumpFile               = "spec.dump"
+	StatusDumpFile             = "status.dump"
 	NetworkStatusFile          = "network.status"
 	CheckpointDirectory        = "checkpoint"
 	CheckpointVolumesDirectory = "volumes"