I'm the creator of [rqlite](https://github.com/rqlite/rqlite), the distributed database that uses SQLite as its database engine. The following issue was filed against the software: ["database or disk is full" on insert or create index](https://github.com/rqlite/rqlite/issues/861). The only suggestions I could find on the web relate to on-disk databases. But rqlite uses an in-memory SQLite database (`vfs=memdb`), so it's not clear how to address this issue. Any help appreciated. Thanks, Philip