Docker is not freeing up space on devicemapper devices

Solution Verified - Updated -

Issue

  • After some time of running normal container operations on the node, the free space value in the devicemapper based Docker pool is lower than expected.

Environment

  • Red Hat Enterprise Linux 7.x
  • docker < 1.12.6-48.git0fdc778
  • docker-latest < 1.13.1-21.1.gitcd75c68

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