diff --git a/daemon/graphdriver/overlayutils/overlayutils.go b/daemon/graphdriver/overlayutils/overlayutils.go index 7058688328..71f6d2d460 100644 --- a/daemon/graphdriver/overlayutils/overlayutils.go +++ b/daemon/graphdriver/overlayutils/overlayutils.go @@ -14,6 +14,11 @@ func ErrDTypeNotSupported(driver, backingFs string) error { if backingFs == "xfs" { msg += " Reformat the filesystem with ftype=1 to enable d_type support." } + + if backingFs == "extfs" { + msg += " Reformat the filesystem (or use tune2fs) with -O filetype flag to enable d_type support." + } + msg += " Backing filesystems without d_type support are not supported." return graphdriver.NotSupportedError(msg)