Disk Removal Safety Utility for Ceph

Using Ceph's JSON dump we can create a utility to help decipher whether or not a disk is safe to remove from within a Ceph cluster. Since Ceph shuffles placement groups when a disk is added or one dies then the user must be able to discern which disks are safe to remove. Using Ceph’s JSON output of a given cluster a user can be presented with an easy to understand representation of removable disks.

This project consists of one main component, a standalone command line utility.