Migrating IMAP from Cyrus v2.2.13 to Cyrus v2.4.17

Jack Snodgrass jack at mylinuxguy.net
Wed Apr 6 14:34:35 EDT 2016

Tried to go to 2.5 and had more serious issues than going to 2.4.  From 
the top of my head I don't recall what it was...
I've still got the 2.5 binaries laying around.  Do you have a successful 
migration path from 2.2 to 2.5 that I can do? I've been told that the 
'seen' flags is a big deal for my peeps. I can ( I think... if I have to 
) write a script that checks the seen flags of all the mail on the old 
system and sets it on the new system... but I am hoping to NOT have to 
do that. I have 185Gig of mail files I have to process and if a 
migration script would do this for me, that's the path I'd like to take.

we are aiming for 0  / minimal down time and users changes. I want to 
get the mail setup on the new server and just change the ip address of 
the new server to the old server's ip address. Hoping to have minimal 
impact to the users.


On 04/06/2016 01:25 PM, ktm at rice.edu wrote:
> On Wed, Apr 06, 2016 at 01:20:13PM -0500, Jack Snodgrass via Info-cyrus wrote:
>> Is there a documented process for taking a system from: Cyrus
>> v2.2.13 to Cyrus v2.4.17
>> I have an old debian box with Cyurs v2.2.13.
>> I have a new debian box with Cyrus v2.4.17
>> Is there a documented / official process for migrating mail like
>> this?  I could not find one.
>> I have rsync'd the mail between the two systems.
>> /usr/lib/cyrus/bin/reconstruct did NOT magically convert the system
>> from the old to the new.
>> I wrote a script to create the mailboxes and their folders.
>> After that ( or maybe before... ) I ran:
>> /usr/lib/cyrus/bin/reconstruct -G -f
>> and I think that has me close to where I want to be. I have mail
>> boxes and folders and test users can view their mail.
>> The 'seen' flags and probably some other flags / acls are not working.
>> Isn't there a simple upgrade / migrate script path that I am failing
>> to find?
>> jack
> Hi Jack,
> Why are you migrating to v2.5.x? It has been out for quite a while now?
> If you have a lot of users, the 2.2 -> 2.4 upgrade can be painful I/O-wise.
> Regards,
> Ken

*jack* - Southlake Texas - http://mylinuxguy.net 
<http://mylinuxguy.net/> - *817-601-7338*
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