@sdm42doc No joy for you, subfolders are still not supported.
Now you do have some options.
- If your server uses LVM, just add the additional space to the LVM volume where the /images are.
- Temp mount the new volume over another directory, move the contents of /images to the new volume via the mount point, disconnect the mount point and mount it over /images
There are some other ways to extend it but it then gets a bit messy.