$XFS_IO_PROG -f -c "pwrite -S 0x18 0 1m" $SCRATCH_MNT/foo >>$seqres.full
su -s/bin/bash - $qa_user -c "ulimit -f 64 ; $XFS_IO_PROG -f -c \"reflink $SCRATCH_MNT/foo\" $SCRATCH_MNT/bar" >> $seqres.full 2>&1
-sz="$(stat -c '%s' $SCRATCH_MNT/bar)"
+sz="$(_get_filesize $SCRATCH_MNT/bar)"
if [ "$sz" -ne 0 ] && [ "$sz" -ne 65536 ]; then
echo "Oddball file size $sz??"
fi