On 02/09/11 20:03, Bron Gondwana wrote: > On Fri, Sep 02, 2011 at 07:36:20PM +1000, Greg Banks wrote: > >> How's about this for a strategy? >> >> When a quota resource is first enabled, (i.e. the limit is changed from >> UNLIMITED to some finite value), the usage is stored as some special >> value which I'll call INDETERMINATE. > > What about 'getquota'? I don't support any solution which leaves getquota > returning bogus values or failing to respond. That's just icky and > confusing. > > I don't think you can avoid two passes, and I don't even think you can > avoid two values during if you really want to be good about it. > > [...] > > There are pure ways to do this, that guarantee consistency. [...] > > That's a real, robust solution. But it's pretty heavy engineering.
After some thought, I agreed, decided it's quite doable, and decided to start. I have an implementation coded, so far the hardest bit is testing it. -- Greg.