Description of problem: According to the upstream docs here: http://docs.ceph.com/docs/master/start/quick-rbd/ There is a flag `--image-feature`. It is not included in the cli help. Additionally, common flags like --size are not included either. I will be happy to work with engineering to address this.
@John: I am probably misunderstanding the issue but here is the CLI help output and I see both are documented (the help is auto-generated programatically so we have to jump through hoops to not include something in the help): $ rbd help create 2018-04-12 12:32:33.451 7f74253dfd80 -1 WARNING: all dangerous and experimental features are enabled. 2018-04-12 12:32:33.526 7f74253dfd80 -1 WARNING: all dangerous and experimental features are enabled. usage: rbd create [--pool <pool>] [--image <image>] [--image-format <image-format>] [--new-format] [--order <order>] [--object-size <object-size>] [--image-feature <image-feature>] [--image-shared] [--stripe-unit <stripe-unit>] [--stripe-count <stripe-count>] [--data-pool <data-pool>] [--journal-splay-width <journal-splay-width>] [--journal-object-size <journal-object-size>] [--journal-pool <journal-pool>] [--thick-provision] --size <size> [--no-progress] <image-spec> Create an empty image. Positional arguments <image-spec> image specification (example: [<pool-name>/]<image-name>) Optional arguments -p [ --pool ] arg pool name --image arg image name --image-format arg image format [1 (deprecated) or 2] --new-format use image format 2 (deprecated) --order arg object order [12 <= order <= 25] --object-size arg object size in B/K/M [4K <= object size <= 32M] --image-feature arg image features [layering(+), exclusive-lock(+*), object-map(+*), fast-diff(+*), deep-flatten(+-), journaling(*)] --image-shared shared image --stripe-unit arg stripe unit in B/K/M --stripe-count arg stripe count --data-pool arg data pool --journal-splay-width arg number of active journal objects --journal-object-size arg size of journal objects --journal-pool arg pool for journal objects --thick-provision fully allocate storage and zero image -s [ --size ] arg image size (in M/G/T) [default: M] --no-progress disable progress output Image Features: (*) supports enabling/disabling on existing images (-) supports disabling-only on existing images (+) enabled by default for new images if features not specified