graphdriver/overlay2: usingMetacopy ENOTSUP is non-fatal
@@ -188,6 +188,11 @@ func usingMetacopy(d string) (bool, error) {
// ...and check if the pulled-up copy is marked as metadata-only
xattr, err := system.Lgetxattr(filepath.Join(l2, "f"), overlayutils.GetOverlayXattr("metacopy"))
if err != nil {
+ // ENOTSUP signifies the FS does not support either xattrs or metacopy. In either case,
+ // it is not a fatal error, and we should report metacopy as unused.
+ if errors.Is(err, unix.ENOTSUP) {
+ return false, nil
+ }
return false, errors.Wrap(err, "metacopy flag was not set on file in the upperdir")
}
usingMetacopy := xattr != nil
