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Created attachment 631665 [details]
Proposed change to test suite to reproduce the bug

Description of problem:
Merging leg back into raid1 does not work: raid claims to be 100% in sync, while no data are written to the merged leg.

Setting severity to high due to risk of data corruption.

Version-Release number of selected component (if applicable):
lvm2-2.02.98-2.x86_64.el6
kernel-2.6.32-335.el6.x86_64

How reproducible:
100%

Steps to Reproduce:
- updating the test suite with provided patch _should_ raise an error
  
Actual results:
- legs show differences.

Expected results:
- legs should be the same

Additional info:

Created attachment 631668 [details]
output of lvconvert --merge -vvvv

*** This bug has been marked as a duplicate of bug 870246 ***