Recently started testing with the Windows port of 2.1.29 using LDBM from the previous build of 2.0.27.
Very infrequently we see: "error code 0 - cache add failed".
After upgrading and running the new slapd viewing the database with the new slapd running using a tool like Softerra, shows an empty database. A slapcat gets all of the data and a delete/slapadd makes it appear in Softerra.
Here are my questions:
1) Are the database formats and indices the same between these revs?
2) Is there a database upgrade required?
3) Could this cause the error I’m seeing?
4) What might be?