Replication issue 2.3.7

[Stuart Henderson]

On 2019-07-16, Stuart Henderson via dovecot <dovecot at dovecot.org> wrote:
> On 2019/07/16 19:46, Aki Tuomi wrote:
>> 
>> > On 16/07/2019 18:40 Stuart Henderson via dovecot <dovecot at dovecot.org> wrote:
>> > 
>> >  
>> > On 2019-07-13, Reio Remma via dovecot <dovecot at dovecot.org> wrote:
>> > > Hello!
>> > >
>> > > I noticed these in the logs since upgrading from 2.3.6. to 2.3.7:
>> > >
>> > > Jul 13 11:52:10 turin dovecot: doveadm: Error: 
>> > > dsync-remote(reio at mrstuudio.ee)</1ekE7qbKV2gYwAAsNnMGQ>: Error: 
>> > > Exporting mailbox INBOX failed: Mailbox attribute 
>> > > vendor/vendor.dovecot/pvt/server/sieve/files/MR lookup failed: Mailbox 
>> > > attributes not enabled
>> > > Jul 13 11:52:11 turin dovecot: doveadm: Error: 
>> > > dsync-remote(reio at mrstuudio.ee)<MVs/K7ubKV2oYwAAsNnMGQ>: Error: 
>> > > Exporting mailbox INBOX failed: Mailbox attribute 
>> > > vendor/vendor.dovecot/pvt/server/sieve/files/MR lookup failed: Mailbox 
>> > > attributes not enabled
>> > 
>> > Same here (in my case: on OpenBSD -current, mdbox, pigeonhole 0.5.7).
>> > I have backed out to 2.3.6 + pigeonhole 0.5.6 and it's happy again.
>> 
>> Instead of downgrading, you could've attempted
>> 
>> mail_attribute_dict = file:%h/dovecot-attributes
>> 
>> to enable mailbox attributes. This should fix sieve script replication too.
>> 
>> Aki
>
> Perhaps, but when dealing with mailboxes out of sync between the two
> replicated machines the first thought is to backout the change that
> triggered the problem, rather than guess things that might help,
> especially when they aren't mentioned in the release notes (actually
> the only thing I find in either NEWS or ChangeLog relating to
> attributes/metadata at all since the last release is adding methods
> to access this via lua API?).
>
>

So after adding "mail_attribute_dict = file:%h/dovecot-attributes"
(alone, I have not configured to use the METADATA extension and the
file is not being created) and going back to 2.3.7, syncs are now
working and I see no more "lookup failed: Mailbox attributes not
enabled".

Prior to adding mail_attribute_dict, with a two server dsync setup,
new mail was syncing from A->B ok but new mail arriving on B didn't
sync to A.

I'm happy that things are now functioning ok on this setup but given
the limited information about what's happening and no information about
config changes needed for 2.3.6->2.3.7 I'm a bit twitchy about 2.3.7
in OS packages (I reverted it to 2.3.6 in OpenBSD after running into
the problem) so it would be nice to know a little more about what's
going on here.