Metrics exporter

PVC metrics exporter designed to run alongside an Ondat instance.

It knows how to extract the relevant information about Ondat volumes and makes it available as a Prometheus scraping endpoint.

Disks not owned by Ondat are ignored.

References

• Prometheus docs
• Prometheus guidelines on writting exporters
• node_exporter github
• Format of /proc/diskstats
• About /proc/1/mounts
• More on statfs syscall