In the Ceph Squid, I created the RBD image of 200GB in Ceph Mgr Dashboard.
And I mounted that RBD image and stored the data of 10GB. Then the dashboard shows the usage as 5%.
And then I created the snapshot of that RBD image. Then the dashboard shows the RBD image usage as 0% even though there are 10GB data in that RBD image.
I checked the RBD image usage using rbd du command on CLI and rbd du shows 0 bytes.
Why does it show 0 bytes after creating the snapshot on the RBD image still having 10GB data?
Is it correct or wrong misconfigured?
And I mounted that RBD image and stored the data of 10GB. Then the dashboard shows the usage as 5%.
And then I created the snapshot of that RBD image. Then the dashboard shows the RBD image usage as 0% even though there are 10GB data in that RBD image.
I checked the RBD image usage using rbd du command on CLI and rbd du shows 0 bytes.
Why does it show 0 bytes after creating the snapshot on the RBD image still having 10GB data?
Is it correct or wrong misconfigured?