Committed an enhancement (r57) to mysqlfs (on SF) to add an optional generated file showing status.
This is like a CGI in a FUSE: the entire content is generated whereas the rest of the project merely gateways content through. This lets a simple file-action (open(), read(), close()) and random parsers-of-choice (awk, perl, grep) determine whether the filesystem is happy, sad, or indifferent. OK, right now it can show in text/plain or text/xml what the config values are (except password), connection-pool status.
I'm doing some bolt-ons to address the one remaining feature-request and to address the reason I came to the project. In doing so, this helps me in the regression-testing and test-driven-development aspects in that I can use the status of the filesystem as part of the checks. I intend to expand it to list out the bolt-ons in LIFO order, and show their status.