Currently there is no any "poke at image filesystem" feature in Glance. AFAIK the main argument about it not belong in glance is that some people think "Glance should never look at the filesystem". But I see there are some really useful functions based on this fundamental, For example:
- View/search image content (file and application level) - View image similarities - Compare images - Compound image support (something like http://docs.docker.io/en/latest/terms/layer/ )
Above features need filesystem indexing and/or accessing operations which poke at the image filesystem.
So I think the gain and loss of this direction is fifty-fifty. And I believe the features around "poke at image filesystem" could get sundry concerns from folks, so we need a place to start the conversation I think.
BTW, I'd like to discuss above features in a dedicated talk with you.
