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Hi,


I want to set quotas associated to keystone users.

In my configuration, an user can create swift containers, and share them 
with other users.
For now, I creates a new tenant for each new shared container, and I add 
the users with a 'member' role. So, an user can list all tenants which 
he has access.
I want to limit the total space an user can use, counting all containers 
which he has access.


Unfortunately, I've seen nothing who can help me to do that.

A solution could be to create a Swift middleware, that will ask Keystone 
the list of tenants the user belongs to, find the containers 
corresponding, and sum their sizes. Even with caching, I think this will 
have bad performances.

Another solution could be to use the Swift StatD logging, although I'm 
not usre of what I can do with it.


Has anyone an use case similar to mine ? What are your solutions ?
What solution would be the easiest to implement ?


thanks