* rawfill
* rewind
* scan
+ * quit
*
* The output will be:
*
* rawfill
* rewind
* scan
+ * quit
*
* The output will be:
*
* ========
*
* which is incroorect because it wrote 17,926 blocks but read
- * back only 17,913 blocks.
+ * back only 17,913 blocks, AND because the return status on
+ * the last block written was -1 when it should have been
+ * 0 (ie. stat=0 above).
*
*
*/