[Dovecot] dbox redesign

[Allen Belletti]

I would add that having fewer, larger files should make backups much
more feasible.  There's a certain amount of overhead for each file
operation (especially for us GFS people!) and reducing the number of
files will reduce that overhead.

Right now our backups (done via rsync) take a pretty scary amount of
time, only to get worse as the size of the mailstore (currently 200G) grows.

Personally I'm pretty excited about dbox.

Allen

Timo Sirainen wrote:
> On Wed, 2009-02-11 at 14:32 -0800, Seth Mattinen wrote:
>   
>> Timo Sirainen wrote:
>>     
>>> This is about how to implement multiple msgs/file dbox format. The
>>> current v1.1's one msg/file design would stay pretty much the same and
>>> it would be compatible with this new design.
>>>
>>>       
>> Out of curiosity, what's the advantage to going to multiple messages per
>> file? Wouldn't this have the same problems as mbox?
>>     
>
> Multiple per file, not everything in one file. As long as the file size
> is set "right", it's probably faster than one per file. We'll see :)
>
>   

-- 
Allen Belletti
allen at isye.gatech.edu                             404-894-6221 Phone
Industrial and Systems Engineering                404-385-2988 Fax
Georgia Institute of Technology