One of our customer ran into an issue when using Cyberduck to upload some large (>10G) files. They found that their object store usage did not go down after removing 300G of files and this was a concern for them as they are charged based on usage. They had deleted the SLO manifest files which appear to be the large files themselves.

After some frustration and a support call to ourselves, they resolved the situation by manually removing the segments , using the following process:

(1) Select menu item: 'View' -> 'Show Hidden Folders'
(2) Expand .file-segements
(3) *Carefully* delete the psuedo-folder named after large file wish to remove.
(4) Repeat 3 for any other large files that you need to remove.

I understand this is a known issue has been discussed with the Openstack large file code contributor. Logging this issue to make sure it has visibility and hopefully to help others who run into this.