Ceph » CephFS

[root@lxbceph0 build]# ./bin/ceph-fuse -h
usage: ceph-fuse [-n client.username] [-m mon-ip-addr:mon-port] <mount point> [OPTIONS]
  --client_mountpoint/-r <sub_directory>
                    use sub_directory as the mounted root, rather than the full Ceph tree.

usage: ceph-fuse [options] <mountpoint>

FUSE options:
    -h   --help            print help
    -V   --version         print version
    -d   -o debug          enable debug output (implies -f)
    -f                     foreground operation
    -s                     disable multi-threaded operation
    -o clone_fd            use separate fuse device fd for each thread
                           (may improve performance)
    -o max_idle_threads    the maximum number of idle worker threads
                           allowed (default: 10)
    -o allow_other         allow access by all users
    -o allow_root          allow access by root
    -o auto_unmount        auto unmount on process termination

  --conf/-c FILE    read configuration from the given configuration file
  --id ID           set ID portion of my name
  --name/-n TYPE.ID set name
  --cluster NAME    set cluster name (default: ceph)
  --setuser USER    set uid to user or uid (and gid to user's gid)
  --setgroup GROUP  set gid to group or gid
  --version         show version and quit

The -d option will be dropped by the global_init() and the libfuse couldn't see it.