Hi, I just migrated from dovecot 1.0.rc29 to 1.1.7, from Sparc platform to Intel, it went very well. In the process I merged folders and excluded folders from being copied. User rights on folders were kept/set. I thought I'd share my migration script with you folks. If there's an interest to put it on the wiki I can do that, but I'm not sure in what page. Use it as a starter if you need to do this yourselves. Prerequisites:

• User names are local unix accounts
• Old server's /home must be mounted with nfs
• Structure and user names must match between the two systems
• Source dovecot must be at least version 1.0.x
• Destination dovecot must be 1.1.x
• Only dovecot data folders and files are copied, neither dovecot indices nor Sieve scripts etc.

Here it goes, have fun! /Peter

#!/bin/sh # # Migrates dovecot Maildir folders and settings from older dovecot on # old server to new dovecot on new server. # Prerequisites: # * User names are local unix accounts # * Old server's /home must be mounted with nfs # * Structure and user names must match between the two systems # * Source dovecot must be at least version 1.0.x # * Destination dovecot must be 1.1.x # * Only dovecot data folders and files are copied, neither dovecot indices nor Sieve scripts etc. # # Originally created by Peter Lindgren peter@norrskenkonsult.com # Use this script at your own risk. No warranties whatsoever, of any kind!

# Basic settings: The first one you must definitely change, it's where you have mounted the old server's home: SOURCEBASE=/mnt/casiopea-home DESTBASE=/home

# Just an abbreviation: MD=Maildir

# Change field separator, for find's sake as there might be folders with spaces: # (doesn't play well together with the for loop otherwise) OLDIFS=${IFS} IFS=' '

# User loop: # Depending on your source system's setup, # you probably have non-interactive users with home directories (one of them # is probably named _dovecot) that shall not be copied. Edit the username # exclusion list according to your needs. # for username in ls $SOURCEBASE; do { # This is your username exclude list: case $username in (maildir|_dovecot) continue;; esac

# Here starts the real work: SOURCEDIR=$SOURCEBASE/$username/$MD DESTDIR=$DESTBASE/$username/$MD echo "================================" echo "Copying user "$username"..." echo "From "$SOURCEDIR" to "$DESTDIR":"

# IMAP Folder loop: # Will create the Maildir folder too, the first echo $SOURCEDIR"/." does that. This way all the copying is in one place only. for sourceimap in { echo $SOURCEDIR"/." ; find $SOURCEDIR -type d -name \.\* -maxdepth 1 -print ; } | sort -f; do { # Folder exlusion and special actions: # .Draft is replaced by .Drafts, so content of .Draft must be copied to .Drafts. # (Probably there were a client in use for a while that used .Draft instead of .Drafts.) # Junk mail folders with various names from clients using different languages shall not be copied. # .Trash shall not be copied either. # Folder .INBOX is a leftover from earlier versions of dovecot, and shall not be copied either. # Add your own exceptions to the list. Be sure to quote spaces and dots. basename=basename $sourceimap action=copy case $basename in (\.Junk|\.Junk\ E-mail|\.Correo\ electr\&APM-nico\ no\ deseado|\.Skr\&AOQ-ppost|\.Trash|\.INBOX) action=skip;; esac echo -n "$basename" "$action" if [ $action"X" == copy"X" ]; then { echo -n ":" destname=$basename

   # Merge contents of .Draft and .Drafts to .Drafts:
   if [ $basename"X" == .Draft"X" ]; then destname=${destname}"s"; fi

   destimap=${DESTDIR}/${destname}
   # If this is the Maildir folder (.), a clean desination name is needed for mkdir:
   if [ $basename"X" == ."X" ]; then destimap=${DESTDIR}; fi

   mkdir -m 700 "${destimap}"
   echo -n "."
   chown ${username} "${destimap}"
   echo -n "."
   chmod go-rx "${destimap}"
   echo -n "."
   cp -p  "${sourceimap}/dovecot-uidlist"  "${destimap}"
   echo -n "."
   cp -p  "${sourceimap}/dovecot-keywords" "${destimap}"
   echo -n "."
   cp -pR "${sourceimap}/cur" "${destimap}"
   echo -n "."
   cp -pR "${sourceimap}/new" "${destimap}"
   echo -n "."
   cp -pR "${sourceimap}/tmp" "${destimap}"
   echo " done."
 }
 else
 {
   echo ""
 }
 fi

}; done # Copy root folder files last in user loop, since the Maildir is created in the imap loop above: cp -p $SOURCEDIR/subscriptions $DESTDIR echo "User "${username}" done." }; done

IFS=${OLDIFS}

-- Peter Lindgren http://www.norrskenkonsult.com