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Hello, I currently have an issue regarding RBD snapshot. The issue: I can fill a VM’s disk with dd, perform an rbd snapshot, delete the dd file, and repeat until the pool is full. All while RBD info shows the virtual size of the disk specified at creation. The commands I am aware of do not accurately reflect
the volume’s total storage consumption. How can I get a better picture of a volume’s storage footprint? “#rados df” , “#rbd diff pool/image@snap | awk '{ SUM += $2 } END { print SUM/1024/1024 " MB" }'”, “#rbd snap ls”, and “rbd export/qemu-img info” aren’t functional enough
to show the storage consumed by differentials for an image. Thanks!
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