We are migrating from CQ5.5 to AEM6.1 and we would like to migrate content version history from crx to oak. So, we used CRX2OAK migration tool to do this. Versions are migrated successfully but once the AEM instance is up. It keeps recreating indexes and run out of disk space. We tried couple of times but seems to be same issue every time.
We tried offline and online compaction but size seems to be same. Can you please guide us what can be tried?
Thanks all for your valuable inputs. We approached through some of your suggestions. But looking close look at the logs Adobe[Day Care Ticket] suggested us to disable all the workflows in the AEM instance before running crx2oak tool. It did work and after the instance is up, re-indexing ran only for 20 mins. We enabled back the workflows after the whole indexing process completed.
Response from Adobe after looking at our logs:
From the error.log, I think you used VLT to ingest assets in AEM which triggered mass workflow instances execution and further indexing. I see 206626 instances which ran once the VLT was initiated and system stopped when workflow instances and its indexing was still on.
Can you retry and refer to  to disable the launchers to trigger workflows that cause the system to flood and fail the system.