The mocked vdisk_list() is based on $source_vdisks, but the real one only returns images. Add a separate list for other volumes on the source, e.g. ISO images, which is only considered by the mocked volume_size_info(). This is in preparation for a test with an ISO image that is only referenced by a snapshot. Suggested-by: Fiona Ebner <f.ebner@proxmox.com> Signed-off-by: Michal Fox <me@dualfroz.com> Link: https://lore.proxmox.com/20261008094650.7-2-me@dualfroz.com [FE: avoid ambiguous term 'format' in comment] Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>