dovecot - Nov 2015 - Dsync problems

Hi,

I'm setting up a migration between 2 dovecot servers 2.1.12 to 2.2.19 .
I've ran into some issues with dsync.

I use the following command for syncing:

doveadm -o mail_fsync=never -o imapc_host=%remote% -o
imapc_master_user=master -o imapc_password=%masterpw% -o
imapc_features="rfc822.size fetch-headers" -o mail_prefetch_count=20
-o
imapc_user=%user% backup -1 -R -u %user% imapc:

I execute a full sync first and when the mailserver are being migrated
it only would have to do incremental. The first is run is without problems.
But I find the following problem:

- Flags on current mails aren't updated. If I set message to unread, the
sync won't pick them up.
- On the origin dovecot server I had removed some messages and purged
the inbox. Those message are now in the Trash and are created again and
again when I sync

Is this normal behaviour? It renders it pretty much useless since data
consistency isn't guaranteed.


Regards,

Frank de Bot

> On 08 Nov 2015, at 23:23, Frank de Bot (lists) <lists at searchy.net>
wrote:
> 
> Hi,
> 
> I'm setting up a migration between 2 dovecot servers 2.1.12 to 2.2.19 .
> I've ran into some issues with dsync.
> 
> I use the following command for syncing:
> 
> doveadm -o mail_fsync=never -o imapc_host=%remote% -o
> imapc_master_user=master -o imapc_password=%masterpw% -o
> imapc_features="rfc822.size fetch-headers" -o
mail_prefetch_count=20 -o
> imapc_user=%user% backup -1 -R -u %user% imapc:
-1 parameter is ignored with backup.
> I execute a full sync first and when the mailserver are being migrated
> it only would have to do incremental. The first is run is without problems.
> But I find the following problem:
> 
> - Flags on current mails aren't updated. If I set message to unread,
the
> sync won't pick them up.
See if adding -f parameter helps.
> - On the origin dovecot server I had removed some messages and purged
> the inbox. Those message are now in the Trash and are created again and
> again when I sync
I don't understand what this means. On origin the mails were moved to Trash?
And what do you mean created again and again?