cmd: noprune prune policy

cmd/config_parse.go

@@ -167,6 +167,8 @@ func parsePrunePolicy(v map[string]interface{}) (p PrunePolicy, err error) {
 	switch policyName {
 	case "grid":
 		return parseGridPrunePolicy(v)
+	case "noprune":
+		return NoPrunePolicy{}, nil
 	default:
 		err = errors.Errorf("unknown policy '%s'", policyName)
 		return

cmd/config_prune_none.go

@@ -0,0 +1,11 @@
+package cmd
+
+import "github.com/zrepl/zrepl/zfs"
+
+type NoPrunePolicy struct{}
+
+func (p NoPrunePolicy) Prune(fs *zfs.DatasetPath, versions []zfs.FilesystemVersion) (keep, remove []zfs.FilesystemVersion, err error) {
+	keep = versions
+	remove = []zfs.FilesystemVersion{}
+	return
+}