Preparing for KDEPIM 2

Hi!

This is a bit longer. I want to get some handle on my migration to KDEPIM 
2 instead of doing it ad-hoc without any previous planning and 
preparations.


I talked about that I like to try KDEPIM 2 soon, and sooner or later I 
intend to migrate to it completely. I am still a bit reluctant cause of 
fear of data loss - I did not read anything regarding this for IMAP / POP3 
for quite some time tough - and my relatively big mail setup.

Current situation:

KMail 1.13.7 from KDEPIM 4.4.5 within KDE SC 4.7.4. crm114 as very efficent 
local spam filter that I am using within KMail.

martin@merkaba:~> du -sh Mail
14G     Mail
martin@merkaba:~> find Mail -type f | wc -l
455006

(on ext4 and an Intel SSD320)

There are way more mails than that, but the rest of them I archived as 
mboxes in my main mail account which is a mixed maildir/mbox resource. I 
tend to archive so that mail folders do not get bigger than about 
30000-40000 mails. Easily 100 folders, which should not be an issue. Also 
quite many filtering rules.

I still use POP3. In Mail are also some more POP3 accounts stored, which 
do not need archiving. They do not contain many mails.

I think I like to continue using POP3 for freemail providers as I do not 
like to store personal data there for long periods of time. But I am 
considering to switch to disconnected IMAP for my main mail account with 
should be about 99% of above mails. And another smaller mail account on 
the same server.

These two mail accounts are Dovecot + Postfix + policyd-weight on a Debian 
Squeeze VM.



Intended end results:

KDEPIM 4.8.2 or later.

Maybe main account as IMAP. But I could do this later to have only one 
change at a time as well. Then I maybe would just start all over with an 
empty account and let the server fill it over time. I think I would move my 
inbox and some other important mails to the IMAP server, but I do not need 
to copy old mailing list mails on it. Currently I would have about 8 GB of 
free space on the server, which is not enough to hold all mails. I think I 
could add more space to it tough.

I might be using dovecot-antispam plugging with CRM114 on the server then. 
And hopefully Sieve will do for on-server filtering. Since its quite some 
change I like to separate it from my migration to KDEPIM 2. Maybe before 
or later. Before might ease the KDEPIM 2 migration.


Intended interim result:

KDEPIM 4.8.2 or later and my current setup alongside with different mail 
sets and configurations. So I can safely try out KDEPIM 2 with a duplicated 
mail user while still being able to use KDEPIM 1 for production.


Preparations that I intend to do:
- Migrate the mboxes to a different mbox only resource? I thought about the 
following steps:
  - Create a new mail account and needed folders as MBox only if possible
  - Stop KMail
  - Move mbox and index files over to the new mail account manually
  - Start KMail
  - I think that would be way faster than trying to move several hundred 
thousand of mails within KMail

- Maybe preparations for a test mail account, maybe IMAP on the server


Where I am bit stuck is to the best approach to test import of my current 
mail set into KDEPIM 4.8.2 while still keeping my old setup around for the 
time being. I can easily deliver mails to my main mail account to two 
different mail users on the server, basically duplicating them there.

But what would be a good approach to handle two installations of KDEPIM 
together with two different data sets and configurations?

I read that KDEPIM 2 uses different configuration files. But I am not sure 
whether two different KDEPIM 2 installations can run alongside on the same 
machine - except when using a VM on it. I know it is possible to compile 
KDEPIM into a different directory, but what about two running Akonadi 
servers? Well I have that when I fire up my private and my work KDE 
sessions (different users).

Maybe the safest approach would be, to use a VM, copy ~/Mail and old mail 
configuration to it and try from there. Or is there a reasonable approach 
to have both KDEPIM versions concurrently on bare metal? Maybe just using 
another local user and give it a newer KDEPIM version? Would KDEPIM 4.8.x 
work together with KDE SC 4.7.4, or should I have a complete KDE SC 4.8.2 
for the user?

Thing is I would like to have a way to test KDEPIM 2 without disrupting my 
existing known-to-work setup. I would like to see KDEPIM 2 working nicely 
for a while before switching to it altogether.


Anyway, next step is likely to take care of these mbox folders first and 
separate them into a different account so that my main account can be 
imported as maildir-only. I should be able to do that while using KDEPIM 1 
already.


Ideas?

Ciao,
-- 
Martin 'Helios' Steigerwald - http://www.Lichtvoll.de
GPG: 03B0 0D6C 0040 0710 4AFA  B82F 991B EAAC A599 84C7
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