We recently added code that relies on all birthmarks being resolved during reconciliation prior to a pages content being written to lookaside. The code that resolves birthmarks in reconciliation for this purpose is called __rec_append_orig_value.

We have seen one test failure out of all our automated testing which shows that a page tries to do lookaside eviction when there is still a birthmark in the list of updates. We should add diagnostic checks in reconciliation to catch the failure closer to where the bug is (rec_visibility.c somewhere).