If you have a storage container on the cluster and the name starts with a “#”, you may see this error while trying to upload an image:
"Could not access the URL nfs://127.0.0.1/%23ISO_Images/.acropolis/image/106ac31b-6236-4534-a2ae-808c08bb912f: Failed to parse the file size"
That happens because the URL cannot have the # in the name and it gets automatically replaced with %23. Therefore, this creates the inconsistency between the container name and the URL.
To resolve the issue, rename the container and remove the # from the container name and retry the image upload.
Take a look at KB-10117 for more information.
Check this guide on storage containers.