Opportunistic quota recalc

Tom Sommer mail at tomsommer.dk
Wed Apr 6 19:09:07 UTC 2016

On 2016-04-06 20:38, Timo Sirainen wrote:
> On 06 Apr 2016, at 13:43, Tom Sommer <mail at tomsommer.dk> wrote:
>> I'm switching quota backend to redis (from maildir++), so all my 
>> current usages are reset.
>> I get that I can do "doveadm quota recalc -A", but it takes forever 
>> (and auth processes time out/crash).
>> It would make much more sense to recalc the usage on login if the 
>> current usage is unset. Is there no way to do a 
>> recalc-quota-on-first-login?
> I'd actually recommend switching to "count" quota:
> http://wiki2.dovecot.org/Quota/Count

I tried count, but it crashes because of dotlocks :) There is another 
post about it :)

> Then if you also want to see the current quotas in Redis, you can use
> http://wiki2.dovecot.org/Plugins/QuotaClone
> Also, quota-dict is actually able to recalculate quota on missing
> keys, but specifically in Redis case its INCRBY command succeeds even
> if it didn't originally exist, so Dovecot doesn't detect it. And it
> would be pretty wasteful to do a GET every time before INCRBY.

Well, GET is cheap in redis, so - But I get what you are saying.


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