Why is Logical Volume Group free space 115K?

[blackxacto]

I don't understand the measurement when running a system report on my 17,1 iMac fusion drive w High Sierra 10.13.6. The Logical Volume Group size is 3TB. The Logical Volume Group free space is 115K. Is this correct?

 

[jerwin]

it's the same on my machine (a 2014 imac 5k). Don't worry about it.

 

[blackxacto]

What does it mean, do you know? I looked at Logical Volume Group on Wikipedia, not being a programer, didn't help.