Re: [Dovecot] Implementing Single instance attachment storage (SIS) with sdbox

[Pascal Volk]

On 03/27/2013 12:30 PM mego...@inboxalias.com wrote:
> Hi there,
> 
> as I want to implement data dedupliction on my dovecot system (eg. a users 
> sends the same attchment to 5 different users on my system so I only have to 
> store the attachment one time and set pointers to the file) , I found out it 
> could be possible with Single instance attachment storage (SIS), so I read 
> several pages about SIS as it was quoted here 
> (http://wiki2.dovecot.org/MailboxFormat/dbox): 
> 
>> dbox storage is extensible. Single instance attachment storage was already 
>> implemented as such extension. 
> 
> But I did not found any further intructions in Dovecot Wiki how to implement 
> it - however, on Dovecots blog there was an older article from Timo which 
> gave some indication how to get it work 
> (http://blog.dovecot.org/2010/07/single-instance-attachment-storage.html):
> 
> 
>> mail_location = dbox:~/dbox:ATTACHMENTS=/attachments/$/$
> 
> 
> But when I change my configuration according to this (I use sdbox as mail 
> format), I just get a "Unknown setting: ATTACHMENTS" in my mail.err log.
> 
> Can anybody give me a clue how to get this working?


Hm, that blog post seems to be a little bit old. There is no need to
modify the mail_location setting.
All single instance storage related settings could be found at the end
of conf.d/10-mail.conf
.


Regards,
Pascal
-- 
The trapper recommends today: fabaceae.1308...@localdomain.org

[Dovecot] Implementing Single instance attachment storage (SIS) with sdbox

[megodin]

Hi there,

as I want to implement data dedupliction on my dovecot system (eg. a users 
sends the same attchment to 5 different users on my system so I only have to 
store the attachment one time and set pointers to the file) , I found out it 
could be possible with Single instance attachment storage (SIS), so I read 
several pages about SIS as it was quoted here 
(http://wiki2.dovecot.org/MailboxFormat/dbox): 

> dbox storage is extensible. Single instance attachment storage was already 
> implemented as such extension. 

But I did not found any further intructions in Dovecot Wiki how to implement it 
- however, on Dovecots blog there was an older article from Timo which gave 
some indication how to get it work 
(http://blog.dovecot.org/2010/07/single-instance-attachment-storage.html):


> mail_location = dbox:~/dbox:ATTACHMENTS=/attachments/$/$



But when I change my configuration according to this (I use sdbox as mail 
format), I just get a "Unknown setting: ATTACHMENTS" in my mail.err log.



Can anybody give me a clue how to get this working?


Thanks in advance!
Megodin






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