hard link troubles

```
What steps will reproduce the problem?
1.Is the functionality of hard link supported in SDFS
2.
3.

What is the expected output? What do you see instead?


What version of the product are you using? On what operating system?


Please provide any additional information below.



```

Original issue reported on code.google.com by `jinzhanb...@126.com` on 23 Jul 2013 at 1:24
