dovecot - Dec 2016 - Dovecot migration via dsync : mail_location problem (INBOX) ?

Hello,

I'm trying to migrate mail accounts from an old dovecot 1.0.15 to a new 
dovecot 2.2.26.
I've set up a master-user on old dovecot, and I run dsync on new server, 
like this :

# doveadm -D -o mail_fsync=never sync -R -u user at domain.tld imapc:

my user at domain.tld looks like this (on the new server):
# doveadm user user at domain.tld
field   value
uid     2000
gid     2000
home    /home/vmail/domain.tld/user
mail    maildir:/home/vmail/domain.tld/user/mail
quota_rule      *:bytes=0


User mail folder on the old server looks like this :
# ls -la /home/virtual/user at domain.tld/
total 64
drwx------  11 vmail vmail  4096 2016-12-06 16:26 ./
drwxrwx--- 234 vmail vmail 12288 2016-12-05 12:57 ../
drwx------   2 vmail vmail    89 2016-12-06 15:29 cur/
-rw-------   1 vmail vmail   352 2016-12-06 16:26 dovecot.index
-rw-------   1 vmail vmail 19456 2016-12-06 16:26 dovecot.index.cache
-rw-------   1 vmail vmail  2220 2016-12-06 16:26 dovecot.index.log
-rw-------   1 vmail vmail    10 2016-12-06 15:14 dovecot-keywords
-rw-------   1 vmail vmail   170 2016-12-06 16:21 dovecot-uidlist
drwx------   5 vmail vmail   148 2016-12-05 16:52 .Drafts/
drwx------   5 vmail vmail   148 2016-12-05 16:52 .FauxIndesirable/
drwx------   5 vmail vmail   148 2016-12-05 16:52 .Indesirable/
-rw-r-----   1 vmail vmail   293 2016-12-06 15:29 maildirsize
drwx------   2 vmail vmail    85 2016-12-06 15:29 new/
drwx------   5 vmail vmail   148 2016-12-05 16:52 .Sent/
drwx------   5 vmail vmail   148 2016-12-05 16:52 .Spam/
drwx------   2 vmail vmail     6 2016-12-07 10:46 tmp/
drwx------   5 vmail vmail  4096 2016-12-06 15:36 .Trash/


When I run the sync, with "doveadm -D -o mail_fsync=never sync -R -u 
user at domain.tld imapc:" on the new server, the new server synchronises 
the mail from the new server, and the file system on the new server 
looks like this :
root at dovecot-pa3:/home/vmail/domain.tld# ls -la 
/home/vmail/domain.tld/user/mail/
total 84
drwx------ 15 mailbox mailbox 4096 Dec  7 11:02 .
drwx------  3 mailbox mailbox 4096 Dec  7 11:02 ..
drwx------  2 mailbox mailbox 4096 Dec  7 11:02 cur
-rw-------  1 mailbox mailbox  556 Dec  7 11:02 dovecot.index.log
-rw-------  1 mailbox mailbox   96 Dec  7 11:02 dovecot.mailbox.log
-rw-------  1 mailbox mailbox   51 Dec  7 11:02 dovecot-uidlist
-rw-------  1 mailbox mailbox    8 Dec  7 11:02 dovecot-uidvalidity
-r--r--r--  1 mailbox mailbox    0 Dec  7 11:02 dovecot-uidvalidity.5847de3b
drwx------  5 mailbox mailbox 4096 Dec  7 11:02 .Drafts
drwx------  5 mailbox mailbox 4096 Dec  7 11:02 .INBOX.Drafts
drwx------  5 mailbox mailbox 4096 Dec  7 11:02 .INBOX.FauxIndesirable
drwx------  5 mailbox mailbox 4096 Dec  7 11:02 .INBOX.Indesirable
drwx------  5 mailbox mailbox 4096 Dec  7 11:02 .INBOX.Sent
drwx------  5 mailbox mailbox 4096 Dec  7 11:02 .INBOX.Spam
drwx------  5 mailbox mailbox 4096 Dec  7 11:02 .INBOX.Trash
drwx------  5 mailbox mailbox 4096 Dec  7 11:02 .Junk
-rw-------  1 mailbox mailbox   17 Dec  7 11:02 maildirsize
drwx------  2 mailbox mailbox 4096 Dec  7 11:02 new
drwx------  5 mailbox mailbox 4096 Dec  7 11:02 .Sent
-rw-------  1 mailbox mailbox   23 Dec  7 11:02 subscriptions
drwx------  2 mailbox mailbox 4096 Dec  7 11:02 tmp
drwx------  5 mailbox mailbox 4096 Dec  7 11:02 .Trash

But dovecot is condigured to have ".Trash", ".Junk" etc...
folders, not
".INBOX.Trash"
I've try multiple things :
- use namespaces for compatibility and add "-n <namespace>" in
sync
command, without success
- modify the mail_location for the user, tried to add LAYOUT=fs, 
INBOX=<folder>, ... without success.

Can anybody help me with that please ?
Here's the #doveconf -n output :
-------------------------------------------------------
# 2.2.devel (f7f4b65): /etc/dovecot/dovecot.conf
# Pigeonhole version 0.4.devel (53a3582)
# OS: Linux 3.16.0-4-amd64 x86_64 Debian 8.6
auth_mechanisms = plain login
doveadm_password =  # hidden, use -P to show it
doveadm_port = 12345
imapc_features = rfc822.size fetch-headers
imapc_host = oldserver.domain.tld
imapc_master_user = masteruser
imapc_password =  # hidden, use -P to show it
imapc_user = %u
mail_plugins = " quota notify replication"
mail_prefetch_count = 20
managesieve_notify_capability = mailto
managesieve_sieve_capability = fileinto reject envelope 
encoded-character vacation subaddress comparator-i;ascii-numeric 
relational regex imap4flags copy include variables body enotify 
environment mailbox date index ihave duplicate mime foreverypart extracttext
mbox_write_locks = fcntl dotlock
namespace compat {
   hidden = no
   list = no
   location = maildir:~/mail/
   prefix = INBOX
   separator = /
}
namespace inbox {
   hidden = no
   inbox = yes
   list = yes
   location    mailbox Drafts {
     auto = subscribe
     special_use = \Drafts
   }
   mailbox Junk {
     auto = subscribe
     special_use = \Junk
   }
   mailbox Sent {
     auto = subscribe
     special_use = \Sent
   }
   mailbox Trash {
     auto = subscribe
     special_use = \Trash
   }
   prefix    separator = /
}
passdb {
   args = /etc/dovecot/dovecot-sql.conf.ext
   driver = sql
}
plugin {
   mail_replica = tcp:192.168.159.9:12345
   quota = maildir:User quota
   quota_grace = 10%%
   quota_rule = Trash:storage=+100M
   quota_status_nouser = DUNNO
   quota_status_overquota = 552 5.2.2 Boite de messagerie pleine.
   quota_status_success = DUNNO
   quota_warning = storage=95%% quota-warning 95 %u
   quota_warning2 = storage=85%% quota-warning 85 %u
   sieve = file:~/sieve;active=~/.dovecot.sieve
   sieve_before = /var/lib/dovecot/sieve/
   sieve_before2 = /home/vmail/%d/%n/sieve/Vacation.sieve
   sieve_default = /var/lib/dovecot/sieve/dovecot.sieve
   sieve_default_name = default
   sieve_global = /var/lib/dovecot/sieve/
}
protocols = " imap sieve pop3 sieve"
service aggregator {
   fifo_listener replication-notify-fifo {
     mode = 0666
     user = mailbox
   }
   unix_listener replication-notify {
     mode = 0666
     user = mailbox
   }
}
service auth {
   inet_listener {
     port = 12346
   }
   unix_listener /var/spool/postfix/private/auth {
     group = postfix
     mode = 0660
     user = postfix
   }
   unix_listener auth-userdb {
     group = mailbox
     user = mailbox
   }
}
service config {
   unix_listener config {
     user = mailbox
   }
}
service doveadm {
   inet_listener {
     port = 12345
   }
   user = mailbox
}
service imap-login {
   inet_listener imap {
     port = 143
   }
   inet_listener imaps {
     port = 993
   }
}
service managesieve-login {
   inet_listener sieve {
     port = 4190
   }
   process_min_avail = 1
   service_count = 1
   vsz_limit = 64 M
}
service quota-warning {
   executable = script /usr/local/bin/quota-warning.sh
   unix_listener quota-warning {
     user = mailbox
   }
   user = mailbox
}
service replicator {
   process_min_avail = 1
   unix_listener replicator-doveadm {
     group = mailbox
     mode = 0660
   }
}
ssl = required
ssl_cert = </etc/ssl/certs/crt-and-intermediate.pem
ssl_key =  # hidden, use -P to show it
userdb {
   driver = prefetch
}
userdb {
   args = /etc/dovecot/dovecot-sql.conf.ext
   driver = sql
}
protocol lmtp {
   postmaster_address = postmaster at domain.tld
}
protocol lda {
   mail_plugins = " quota notify replication sieve"
   postmaster_address = postmaster at domain.tld
}
protocol imap {
   mail_plugins = " quota notify replication imap_quota"
}
-------------------------------------------------------


Best regards,
C?dric

> On 7 Dec 2016, at 12.22, C?dric ML <cedric.bassaget.ml at gmail.com>
wrote:
> 
> Hello,
> 
> I'm trying to migrate mail accounts from an old dovecot 1.0.15 to a new
dovecot 2.2.26.
> I've set up a master-user on old dovecot, and I run dsync on new
server, like this :
> 
> # doveadm -D -o mail_fsync=never sync -R -u user at domain.tld imapc:
> 
?
> But dovecot is condigured to have ".Trash", ".Junk"
etc... folders, not ".INBOX.Trash"
> I've try multiple things :
> - use namespaces for compatibility and add "-n <namespace>"
in sync command, without success
> - modify the mail_location for the user, tried to add LAYOUT=fs,
INBOX=<folder>, ... without success.
> 
> Can anybody help me with that please ?
> 
you can try setting imapc_prefix=INBOX and imapc_list_prefix=INBOX or maybe
?INBOX.'

Sami

hi Sami,
imapc_prefix is not a valid option.
but imapc_prefix_list="INBOX" is great ! It does the trick !

Thanks a lot.
Regards,
C?dric

Le 07/12/2016 ? 12:33, Sami Ketola a ?crit :
>> On 7 Dec 2016, at 12.22, C?dric ML <cedric.bassaget.ml at
gmail.com> wrote:
>>
>> Hello,
>>
>> I'm trying to migrate mail accounts from an old dovecot 1.0.15 to a
new dovecot 2.2.26.
>> I've set up a master-user on old dovecot, and I run dsync on new
server, like this :
>>
>> # doveadm -D -o mail_fsync=never sync -R -u user at domain.tld imapc:
>>
> ?
>
>> But dovecot is condigured to have ".Trash", ".Junk"
etc... folders, not ".INBOX.Trash"
>> I've try multiple things :
>> - use namespaces for compatibility and add "-n
<namespace>" in sync command, without success
>> - modify the mail_location for the user, tried to add LAYOUT=fs,
INBOX=<folder>, ... without success.
>>
>> Can anybody help me with that please ?
>>
> you can try setting imapc_prefix=INBOX and imapc_list_prefix=INBOX or maybe
?INBOX.'
>
> Sami
>