On Fri, Jul 16, 2010 at 8:34 PM, Brandon Lamb <brandonl...@gmail.com> wrote:
> On Fri, Jul 16, 2010 at 4:07 PM, Brandon Lamb <brandonl...@gmail.com> wrote:
>> On Fri, Jul 16, 2010 at 2:31 PM, Timo Sirainen <t...@iki.fi> wrote:
>>> On 16.7.2010, at 22.19, Brandon Lamb wrote:
>>>
>>>> My question is basically whether the dbox format is ready for
>>>> production environment, is sdbox or mdbox more stable/ready than the
>>>> other or does it matter? What are people's experience/review with
>>>> running this format (and if you reply can you tell me which one you're
>>>> using).
>>>
>>> sdbox is really simple. mdbox is more complex. A few people have used sdbox
>>> with v1.x, but it's more or less rewritten with v2.0. With v2.0 I'm not
>>> aware of any sdbox installations, but there is at least one somewhat large
>>> mdbox installation. They've had some problems, but I think those are mostly
>>> gone now.
>>
>> Any recommendation of one over the other? I came across a 2009 mailing
>> list entry where you showed some benchmark tests that had mdbox as the
>> fastest. Without any experience yet, my only possible hangup is being
>> able to restore individual (lost, whatever other reason) mails for
>> customers. Doesnt really happen but being able to restore individual
>> versus their whole mailbox is nice, but it happens so rarely it may be
>> a non issue.
>>
>>>> Is there any docs/wiki page for migrating from maildir -> dbox?
>>>
>>> dsync migrates between any two mailbox formats and does it as perfectly as
>>> it can. http://wiki2.dovecot.org/Tools/Dsync
>>
>> Awesome, I'll go do some reading and mess with that
>>
>>>> I have ~450gigs / 14k pop accounts I would have to migrate. Oh thats
>>>> another question, I have seen "hybrid" throw around, can I take this
>>>> to mean dbox/mdbox/both support both formats, maybe only new mail goes
>>>> into the dbox stuff? And if so (or even if not) is there any way to
>>>> actually convert from maildir to dbox?
>>>
>>> v1.x had some kind of a maildir/dbox hybrid.. until I realized it was just
>>> a bad idea. You can have per-user mail location defined in userdb though,
>>> so you can convert users a few at a time.
>>>
>>>> Another question, if there is such a conversion tool, does it break
>>>> UIDLs and require pop3 clients to redownload messages?
>>>
>>> dsync is awesome and preserves everything. But test it anyway just in case.
>>> I'd anyway recommend setting pop3_save_uidl=yes and sometimes after that
>>> (when you think everyone's logged in at least once) switching to
>>> pop3_uidl_format=%g while still running maildir. With Maildir the new UIDLs
>>> are then the filenames and with dbox the UIDLs will be message GUIDs. Those
>>> are much more permanent than anything based on IMAP UIDs. Not a
>>> requirement, but still :)
>>
>> Cool, if anything I could just have a script login to every users
>> account and logout and that would do the same thing right? Or does it
>> have to perform some kind of list or other action?
>>
>> Any main/major/big reasons to try to go with mdbox over sdbox? sdbox
>> being really simple = less prone to typos and other bad things
>> happening?
>>
>> Oh, what about if i migrate to sdbox, then decide to go with mdbox,
>> will I want to know for sure ahead of time? Granted I guess thats kind
>> of an obvious yes, but any big gotchas to know about if I did?
>>
>> Oh yea and dovecot kicks ass btw =P
>
> Ok I got all migrated over to dovecot2 configuration, and started to
> dive into this converting business... one thing I immediately fell
> into is that the wiki doesnt say anything about namespace issues. I
> return maildir:~/maildir in my current setup via prefetch/sql, and I
> got errors trying to do
>
> dsync -u bran...@olypen.com mirror mdbox:~/mdbox
>
> Do I need some special namespace configuation/setup?
>
I think I may have got it, I added the following to my 10-mail.conf
# maildir
namespace {
type = private
separator = /
prefix =
# location = maildir:~/maildir
inbox = yes
hidden = no
}
# mdbox
namespace {
type = private
separator = /
prefix = "#mdbox/"
location = mdbox:~/mdbox
inbox = no
hidden = no
}
