Ceph » rgw

problem 1:
- user creates bucket at beginning if day
- pumps full of data
- removes bucket at end of day
- we sample billing, scrape logs, and miss out on the bucket that no longer exists. never scape the $bucket.$date log object.

solution:
- create a per-user log object for bucket creations, deletions, any other non-bucket requests

problem 2:
- user a creates bucket foo
- does some stuff
- user a deletes foo
- user b creates bucket foo
- does some stuff
- we sample billing, scrape logs, and bill user b for user a's usage

solution:
- name bucket log object $owner.$bucketid.$date

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