[RFC] CLI improvement

[kolyshkin]

moctl tool with two main types of entities:
1 a mosaic (as a whole);
2 an (individual) volume.

These two types are very different in nature, but the moctl actions we use on them are sometimes intersect. In particular, moctl mount and moctl umount can refer to the mosaic or a volume, so we have to introduce a special volume name, -, meaning "the mosaic itself".

Currently, we have almost 10 volume-related commands, and only 3 mosaic commands (mount, umount and info). To avoid confusion, I propose to prepend the literal word mosaic for mosaic-related commands, leaving volume-related ones as is.

Example:
moctl NAME mount - MOUNTPOINT --> moctl NAME mosaic mount MOUNTPOINT

The alternative I considered (and refused) is to use volume for where the volume name is, such as: moctl NAME mount volume VOLNAME MOUNTPOINT for volume, and moctl NAME mount MOUNTPOINT for the mosaic itself.

What do you think?

[xemul]

Too many keystrokes :(

[kolyshkin]

Same as with short vs long options, it's either clarity or brevity. I prefer clarity over brevity.

Alternatively, we can have two commands, one for volumes, one for mosaic.

[xemul]

Frankly, I see no problems with "moctl " semantics. Really. Yes, for some actions target can be only one of mosaic/volume, for some (mount and umount currently) they intersect, but reserving '-' as a volume name that means 'mosaic' in intersecting cases is OK. From my perspective.