Docker 1.10.2

Kubernetes 1.1.7

I start docker with parameter

--graph=/mydisk/mypath/

And start Kubelet with parameters

--docker-root=/mydisk/mypath/ --image-gc-high-threshold=80 --images-gc-low-threshold=60

docker info shows me Data Space Total: 107.4 GB. And mydisk is 1.2T. With a long time running, the total size of pulled docker images reaches 107.4GB. Then docker daemon crashes. I do not want to set

--storage-opt dm.loopdatasize=1.2T 

for docker. So what can I do to make Kubelet image GC for docker "Data Space Total" instead of disk space?