Ceph - How to determine actual size of THIN provisioned RBD image

Solution Verified - Updated -

Issue

  • RBD images in Ceph are THIN provisioned therefore you do not always know the real size of the image.

Environment

  • Red Hat Ceph Storage 1.3
  • Red Hat Ceph Storage 2.y
  • Red Hat Ceph Storage 3.y

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