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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