Prometheus Metric for Client Disk Usage

[jayheinlein]

Is this a BUG REPORT or FEATURE REQUEST?

FEATURE REQUEST

Currently in the maya volume exporter the only exported disk usage metrics are OpenEBS_logical_size and OpenEBS_actual_used which show disk usage on the actual host machines. I would like to allow Prometheus alerting rules on the usage from a client's perspective as well but there is no exported metric that shows this information.

What you expected to happen: I would like to have an exported Prometheus metric that shows client usage of an OpenEBS volume.

Anything else we need to know?:

Environment:

• Maya version (use maya version): v0.6.0
• M-apiserver version (use m-apiserver version): v0.6.0
• OS (e.g. from /etc/os-release): CoreOS 1800.5.0
• Kernel (e.g. uname -a): 4.14.59-coreos
• Install tools: openebs-operator.yaml