31 Aug
2018
31 Aug
'18
8:18 p.m.
Folks
I've started to use "vdo" instead of zfs in Centos 7. I hope this is a wise decision. However, I'm a bit mystified in decoding the "vdostats" output.
I'd like to figure out how well deduplication is working. One measure would be to find two numbers: L = How many bocks are in use as reported to tools like df P = How many actual blocks are in use.
Then a value such as L/P, which can never be less than 1, would be interesting. If I have typically four copies of everything, I'd expect to see L/P close to 4.00.
What two numbers, in the "vdostats" do this if any?
David