Bug 736675

Description of problem:
After code review of /usr/share/v7/tests/storage/storage.py, I found that storage.py run dt with an static option 'records=X' and X is incorrectly static.
Here's the buggy code of storage.py, check line 113:
   110	    def dtTest(self, minBs, maxBs, file, size, otherOptions):
   111	        """Do a few passes of read/write testing on the given device."""
   112	        # Find out how many maxBs-sized blocks we can fit on the test file/dev
   113	        blocks = ((size/(maxBs/1024)))
'blocks' is the records that will give to dt as an option 'records=%d' % blocks.
And the records is static as line 113 wrote.I think records should be dynamically assigned as size*1024/bs.
If test size is set as 64k, as maxBs is 64k too, we will get blocks=1.Not matter what bs is set, it will write/read only 1 record, and can't cover all the test size.


Version-Release number of selected component (if applicable):
14

How reproducible:
100%

Steps to Reproduce:
1.v7 run -t storage
2.Check dt print
3.
  
Actual results:
Every write operation has same records

Expected results:
Every write operation should have different records to cover the test size

Additional info: