Hello again and thanks for the quick answer!
Our base (inbox) namespace is based on MDBOX with SIS
SIS is fantastic optimizing the storage required to the active (daily
accessed/moved) email.
But for archival and easy recover of some specific user mailbox/folder
it isn't practical to rely on the shared attachment storage of SIS, also
I think is more universal format in case some legal obligation require
us to give the e-mail of some user to the authorities, including all the
attachments.
I would opt for some tradeoff solution if I find a way to enable the
altstorage or additional namespace (also with MDBOX) but without SIS so
that I can store the old mails with the attachments included and
compressed. (zstd does a great job!)
Is there any way to do it?
It seems to me SIS can't be enabled/disabled for each namespace.
zlib_save would benefit if it could be different for each namespace (eg.
lz4 or none for the inbox namespace and zstd for the archival)
Regards.
On 6/28/21 13:42, Josef 'Jeff' Sipek wrote:> On Mon, Jun 28, 2021 at 10:00:59 +0100, Pedro Ribeiro wrote:
>> Hello!
>>
>> Thank you for the suggestion.
>>
>> That solved the problem of using layout FS with MBOX storage format.
>>
>> After copying all the mail of the test user to the namespace in this
>> format I've compressed all the storage files with ZSTD and that
changed
>> the name with the additional suffix .zst
>>
>> Dovecot seems to need this to be .zstd so I've fixed the names.
>>
>> But ... it doesn't work.
>>
>>> Jun 28 08:56:39 ribble dovecot:
>>> imap(pribeiro at net.ipl.pt)<82609><vi0h1M7FGMMKZP4/>:
Error: Mailbox
>>> @HISTZLIB/IPLNet:
>>>
stat(/mnt/mail-hist/historic-fs/net.ipl.pt/ro/pribeiro/mailboxes/IPLNet/mBoX-MeSsAgEs)
>>> failed: No such file or directory
>> In that directory the filename is:
>>
>>> -rw------- 1 vmail vmail 853M Jun 25 17:25 mBoX-MeSsAgEs.zstd
>> What am I doing wrong?
> Hm. It is possible that it just doesn't work. mbox doesn't get a
lot of
> attention these days - its support is more of a migration tool.
>
> Out of curiosity, why do you use mbox? In your earlier email you said that
> you want a self contained format. Why? What's the goal?
>
> Jeff.
>
>> regards!
>>
>> On 24/06/2021 14:53, Josef 'Jeff' Sipek wrote:
>>> On Thu, Jun 24, 2021 at 10:35:24 +0100, Pedro Ribeiro wrote:
>>>> Hello everyone!
>>>>
>>>> Our archive namespace is kept in MBOX format with Maildir++
layout due to:
>>>>
>>>> * Need to have the email from all users/folders self
contained (our
>>>> base namespace uses MDBOX with single instance storage of
attachments)
>>>> * MBOX/FS layout isn't supported because some folders
have messages
>>>> and subfolders.
>>> You should be able to use the fs layout if you specify a dirname:
>>>
https://doc.dovecot.org/configuration_manual/mail_location/mbox/mboxchildfolders/#messages-in-named-file
>>>
>>> Then, the compression suffix being added shouldn't matter.
>>>
>>> Jeff.
>> --
>> Best regards,
>>
>> =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=->> Pedro
Ribeiro
>> Polit?cnico de Lisboa, Servi?os da Presid?ncia
>> Departamento de Sistemas de Informa??o e Comunica??es
>> Phone: +351 210 464 700 (general) / VoIP: 80100
>> Helpdesk:helpdesk at net.ipl.pt /https://www.net.ipl.pt
>> =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=->>
>>
>
--
Best regards,
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-Pedro Ribeiro
Polit?cnico de Lisboa, Servi?os da Presid?ncia
Departamento de Sistemas de Informa??o e Comunica??es
Phone: +351 210 464 700 (general) / PBX Ext.: 80100
Helpdesk: helpdesk at net.ipl.pt / https://www.net.ipl.pt
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
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