Greyhole uses Samba to create a storage pool of all your available hard drives, and allows you to create redundant copies of the files you store.
openat_fn
function definition (const struct vfs_open_how *how param replaces int flags, mode_t mode) Fixes #311mkdir /mnt/samba/ShareName/Folder/SubFolder
resulted in empty folders created as /path/to/storage/pool/drive*/ShareName/SubFolder