racker/virgo — pull request #222 by Kami (2012-10-05 05:00:33+00:00)
Title: Add used_perecent and free_precent metric to filesystem check.

Our alarm DSL doesn't support basic math operations which means there is no way to calculate percent of used and free space for a particular system.

This branch adds two new derived metrics to a filesystem check:

- `used_perecent`
- `free_perecent`