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* [Test] Creates a split brain and verifies IO failureubansal2020-08-241-0/+165
Steps: 1. Create a volume and mount it 2. Disable heal and cluster-quorum-count 3. Bring down one data and arbiter brick from one subvol 4. Write IO and validate it 5. Bring up bricks 6. Bring down another data brick and arbiter brick from the same subvol 7. Write IO and validate it 8. Bring up bricks 9. Check if split-brain is created 10. Write IO -> should fail 11. Enable heal and cluster-quorum-count 12. Write IO -> should fail Change-Id: I229b58c1bcd70dcd87d35dc410e12f51b032b9c4 Signed-off-by: ubansal <ubansal@redhat.com>