347cde827b
If the usage of a datastore did not change, we did not return an estimate. The ui interpreted this as 'not enough data', but it should actually be 'never'. Fixing this by always setting the estimate first to 0 and overwriting if we successfully calculated one, and checking for 'undefined' in the ui. Signed-off-by: Dominik Csapak <d.csapak@proxmox.com>