i,
When I first transfert te file to OVH (swift storage) in a directoryy (swift:path) my file is well in this directory with a size of 0 Kb, but a new dir is created in swift:path_segments were a found files with name as follow (the rclone help talk about chunk and te name of chunks files)..I understand that rclone split te file in some fragments or segments.
vzdump-qemu-101-2020_12_13-11_19_25.vma.zst/1607860637.847729008/282109612679/00000021
vzdump-qemu-101-2020_12_13-11_19_25.vma.zst/1607860637.847729008/282109612679/00000022
vzdump-qemu-101-2020_12_13-11_19_25.vma.zst/1607860637.847729008/282109612679/00000023
vzdump-qemu-101-2020_12_13-11_19_25.vma.zst/1607860637.847729008/282109612679/00000024
If I launch "rclone lsd swith:path_segments", directory listing return the original name of my file.
When I download back the file to te original server, I found theses multiples files in the destination path.
I think I'm missing something.
Te help of rclone says 
"The chunker overlay transparently splits large files into smaller chunks during upload to wrapped remote and transparently assembles them back when the file is downloaded. This allows to effectively overcome size limits imposed by storage providers."
It's that the "chunker" doesn't assembles te splited files.
Thxs