Hello , I use ceph as block storage in kubernetes. I want to get the rbd usage by command "rbd diff image_id | awk '{ SUM += $2 } END { print SUM/1024/1024 " MB" }’”, but I found it is a lot bigger than the value which I got by command “df -h” in the pod. I do not know the reason and need your help.
Thanks.
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