Get usage for a Ceph cluster per crush root.
This script uses the output from 'ceph osd df tree' and returns a formatted list with usage information about a Ceph crush root. Although the 'ceph osd df tree' command gives a lot of information, i missed a quick overview where i can see the utilization.
./ceph_usage.py
Crush root OSDs GB GB used GB available Average utilization
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default 0 0.0 0.0 0.0 0%
hdd 1000 5000.00 2000.00 3000.00 53.12%
ssd 500 3000.00 999.99 2000.01 18.55%
very_very_fast 100 1000.00 100.00 900.00 10.25%The output shown above is totally made up, this is just to give you a idea of what to expect from this script.