Migration

[Alex La]

Am 30.12.18 um 10:53 schrieb Sami Ketola:
> 
>> On 29 Dec 2018, at 23.49, Hans Brage <hans at plattformen.se> wrote:
>>
>> Hi!
>>
>> I'm currently running an small imap-server on Dovecot 2.2.4 but will retire that server. I've set up an new server with Dovecot 2.3.4 and will migrate the mailboxes (maildir-format) from the old to the new server. I'm planning to restructure the accounts a bit when migrating so I need to move them one by one. Its only a few so thats not a big issue.
>>
>> Both servers are using virtual accounts (users file).
>>
>> I've understood that best method for migration is to run doveadm backup -R from the new server. But I really cant figure out what other parameters or settings that I need to perform that task and if it should be run as user vmail or root.
>>
>> Would be greatful for any tips, hints, links or similiar.
> 
> 
> Once you have the new server set up, you can use dsync over ssh to sync the mailboxes with something like:
> 
> doveadm backup -u user at newserver -R ssh sudouser at oldserver sudo /usr/bin/doveadm dsync-server -u user at oldserver
> 
> needs to be run as root on new server. Also ssh access with keys and without password is recommended.

I used to run `doveadm backup` on the new server with glusterfs and at the
middle of the sync the glusterfs is gone. Have anyone good experience with
glusterfs and `doveadm backup/sync`?

> Sami

Regards
Aleks