Description of problem:
Created a dis-rep volume, where one replica set consists of 20GB bricks and second replica set consists of 5GB bricks, after that I FUSE mounted the volume and created three files such that they will hash to second replica set as per the hash layout, but I am seeing the files are created on replica set one.

Version-Release number of selected component (if applicable):
3.12.2-37

How reproducible:
1/1

Steps to Reproduce:
1) A distributed-replicated volume is created where one replica set has all bricks of 20GB and the other has one brick of 10BG and two bricks of 5GB each.
2) Checked the hash layout on all the bricks.
3) As replica pair of heterogeneous bricks is not supported, did remove-brick to remove the second replica set which had one brick of 10BG and two bricks of 5GB each.
4) Remove brick completed and committed.
5) Added new replica set with all 3 bricks of 5GB each.
6) Triggered rebalance on the volume and it completed successfully.
7) Checked the hash layout on back end bricks.
8) Created three files such that they should hash to the second replica pair, with all 3 bricks of 5GB each.

Actual results:
Files hash at replica set one where all bricks are of 20GB

Expected results:
Files should hash to replica set two with all 3 bricks of 5GB each

Additional info:
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