The machine has 8GB. 2.5GB is used to run storj, boinc and gridcoin. Is this TTL issue the same as the database lock problem where I need a separate SSD drive to fix the issue? Would that problem still exist if mysql were used as the backend database?
It’s not a TTL issue, it’s issue with locked databases, so yes, moving databases to the SSD or other less loaded drive should help.
You may try that, we didn’t consider it’s as a suitable for the storagenode setup (it would be unnecessarily more complicated). However, I believe that code changes would be required. If you would succeed, you may submit a pull request and our developers will be glad to review and accept it.