dsync issues due to Prefix difference?

[Mark Little]

Hi everyone,

I'm hoping I am just missing something obvious - but I cannot seem to 
get a one-way migration dsync working between two Dovecot servers 
because the Prefix configuration is different.

I am doing a migration from our old Dovecot servers to some new cPanel 
based ones.
Source: 2.2.15
Dest: 2.2.21

Here is the debug output for the sync:

doveadm(root): Debug: Loading modules from directory: 
/usr/lib/dovecot/modules/doveadm
doveadm(root): Debug: Module loaded: 
/usr/lib/dovecot/modules/doveadm/lib10_doveadm_sieve_plugin.so
doveadm(testuser at example.ca): Debug: Effective uid=1322, gid=1322, 
home=/khstor3/khmail-mailboxes/l/li/example.ca/testuser
doveadm(testuser at example.ca): Debug: Namespace inbox: type=private, 
prefix=, sep=, inbox=yes, hidden=no, list=yes, subscriptions=yes 
location=maildir:~/Maildir
doveadm(testuser at example.ca): Debug: maildir++: 
root=/khstor3/khmail-mailboxes/l/li/example.ca/testuser/Maildir, index=, 
indexpvt=, control=, 
inbox=/khstor3/khmail-mailboxes/l/li/example.ca/testuser/Maildir, alt=
doveadm(testuser at example.ca): Debug: Namespace : Using permissions from 
/khstor3/khmail-mailboxes/l/li/example.ca/testuser/Maildir: mode=0777 
gid=default
stdin: is not a tty
dsync-local(testuser at example.ca): Debug: brain M: Local mailbox tree: 
INBOX guid=f055ac07d79cad508a7a000075e38adc uid_validity=1353555159 
uid_next=2085 subs=no last_change=0 last_subs=0
dsync-local(testuser at example.ca): Debug: brain M: Local mailbox tree: 
Junk guid=703a8b1d51ceab56f91e0000667eee40 uid_validity=1391566942 
uid_next=1 subs=yes last_change=0 last_subs=1454100049
dsync-local(testuser at example.ca): Debug: brain M: Local mailbox tree: 
Trash guid=9bee9f0f2aacb65039260000b171e44d uid_validity=1353555163 
uid_next=25 subs=no last_change=0 last_subs=0
dsync-local(testuser at example.ca): Debug: brain M: Local mailbox tree: 
Drafts guid=4d03661058a0f1524f240000e9d81ad0 uid_validity=1391566936 
uid_next=1 subs=no last_change=0 last_subs=0
dsync-local(testuser at example.ca): Debug: brain M: Local mailbox tree: 
Sent guid=99ee9f0f2aacb65039260000b171e44d uid_validity=1353555161 
uid_next=4 subs=no last_change=0 last_subs=0
dsync-local(testuser at example.ca): Debug: brain M: Remote mailbox tree: 
INBOX guid=6460141741cfab5643470000afb0d608 uid_validity=1454100291 
uid_next=2064 subs=no last_change=0 last_subs=0
dsync-local(testuser at example.ca): Debug: brain M: Remote mailbox tree: 
INBOX.Trash guid=6360141741cfab5643470000afb0d608 
uid_validity=1454100290 uid_next=12 subs=yes last_change=0 
last_subs=1454100289
dsync-local(testuser at example.ca): Debug: brain M: Remote mailbox tree: 
INBOX.Sent guid=6260141741cfab5643470000afb0d608 uid_validity=1454100289 
uid_next=2 subs=yes last_change=0 last_subs=1454100289
dsync-remote(testuser at example.ca): Error: Couldn't find namespace for 
mailbox Junk


I believe the problem is because on the source we have no prefix set, 
but on the destination it has INBOX as the prefix.  I need to use dsync 
because we have many POP3 clients so I need to ensure the UIDL's are 
copied correctly.

Here is the output from 'doveconf namespace':

Source:
namespace inbox {
   disabled = no
   hidden = no
   ignore_on_failure = no
   inbox = yes
   list = yes
   location =
   mailbox Drafts {
     auto = subscribe
     driver =
     special_use = \Drafts
   }
   mailbox Junk {
     auto = subscribe
     driver =
     special_use = \Junk
   }
   mailbox Sent {
     auto = subscribe
     driver =
     special_use = \Sent
   }
   mailbox "Sent Messages" {
     auto = no
     driver =
     special_use = \Sent
   }
   mailbox Trash {
     auto = subscribe
     driver =
     special_use = \Trash
   }
   order = 0
   prefix =
   separator =
   subscriptions = yes
   type = private
}


Destination:

namespace {
   disabled = no
   hidden = no
   ignore_on_failure = no
   inbox = yes
   list = yes
   location =
   mailbox Archive {
     auto = create
     autoexpunge = 0
     comment =
     driver =
     special_use = \Archive
   }
   mailbox Archives {
     auto = no
     autoexpunge = 0
     comment =
     driver =
     special_use = \Archive
   }
   mailbox Drafts {
     auto = subscribe
     autoexpunge = 0
     comment =
     driver =
     special_use = \Drafts
   }
   mailbox Junk {
     auto = create
     autoexpunge = 0
     comment =
     driver =
     special_use = \Junk
   }
   mailbox Sent {
     auto = subscribe
     autoexpunge = 0
     comment =
     driver =
     special_use = \Sent
   }
   mailbox "Sent Messages" {
     auto = no
     autoexpunge = 0
     comment =
     driver =
     special_use = \Sent
   }
   mailbox Trash {
     auto = subscribe
     autoexpunge = 0
     comment =
     driver =
     special_use = \Trash
   }
   order = 0
   prefix = INBOX.
   separator =
   subscriptions = yes
   type = private
}



If anyone could provide some assistance it would be greatly appreciated!

Thanks,
Mark