獲取vsan使用率

for datacenter in content.rootFolder.childEntity:

	for datastore in datacenter.datastore:

        datastore_name = datastore.name                                             #datastore名稱
        capacity = datastore.summary.capacity                                       #總容量
        freespace = datastore.summary.freeSpace                                     #空閒容量
        vsan_storage_usage_rate = ('%d' + '%%') % int(((capacity - freespace) / capacity) * 100)        #storage使用率
        # print(vsan_storage_usage_rate)
        storage_dict[datastore_name] = vsan_storage_usage_rate