md5sum $testdir/file3 | _filter_scratch
md5sum $testdir/file3.chk | _filter_scratch
-echo "CoW and unmount"
+echo "CoW and unlink"
cowoff=$((filesize / 4))
cowsz=$((filesize / 2))
$XFS_IO_PROG -f -c "pwrite -S 0x63 -b $cowsz $cowoff $cowsz" $testdir/file3 >> $seqres.full