Overlayfs might copy up data of file on first write of file (and not necessarily upon open of file). So call falloc file opened with O_RDWR and after that data must have been copied up. Signed-off-by: Vivek Goyal <vgoyal@xxxxxxxxxx> --- tests/overlay/060 | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) Index: xfstests-dev/tests/overlay/060 =================================================================== --- xfstests-dev.orig/tests/overlay/060 2018-08-27 11:21:51.811847671 -0400 +++ xfstests-dev/tests/overlay/060 2019-02-04 11:28:09.023718690 -0500 @@ -170,7 +170,7 @@ test_common() # Trigger data copy up and check absence of metacopy xattr. mount_overlay $_lowerdir - $XFS_IO_PROG -c "open -a $SCRATCH_MNT/$_target" + $XFS_IO_PROG -c "falloc 0 1" $SCRATCH_MNT/$_target >> $seqres.full echo "check properties of data copied up file" check_file_size_contents $SCRATCH_MNT/$_target $_size "$_data" umount_overlay
