Hi all,

I am currently trying to migrate from cyrus to dovecot on a new system. Though only few accounts, I decided to use the mdbox format. To convert I use cyrus2dovecot first, then I use dsync to import the mailboxes. For compatibility I set the namespace of inbox to prefix = INBOX. and separator = . (as described here: http://wiki2.dovecot.org/Migration/Cyrus http://wiki.dovecot.org/Namespaces). This works except that the clients (mutt and Thunderbird) show an additional folder/mailbox "INBOX" below the inbox. How can I fix that? Should I add a prefix during conversion and not change the namespace config? On disk, the subfolders are next to INBOX.

Well, I then tried to set list = children instead of "yes" for namespace inbox. On login a segfault occurs with this setting. See the information and backtrace below.

Regards, Vincent

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linux-server2:~ # dovecot --version 2.2.25 (7be1766) linux-server2:~ # dovecot -n # 2.2.25 (7be1766): /etc/dovecot/dovecot.conf # Pigeonhole version 0.4.15 (97b3da0) # OS: Linux 4.1.21-14-default x86_64 openSUSE 42.1 (x86_64) btrfs base_dir = /data/mail/dovecot/ disable_plaintext_auth = no mail_debug = yes mail_gid = dovecot mail_location = mdbox:/data/mail/dovecot/maildat/%u mail_privileged_group = dovecot mail_uid = dovecot 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 namespace inbox { inbox = yes list = children location = mailbox Drafts { special_use = \Drafts } mailbox Junk { special_use = \Junk } mailbox Sent { special_use = \Sent } mailbox "Sent Messages" { special_use = \Sent } mailbox Trash { special_use = \Trash } prefix = INBOX. separator = . } passdb { driver = pam } plugin { sieve = file:~/sieve;active=~/.dovecot.sieve } protocols = imap lmtp ssl = no ssl_dh_parameters_length = 2048 ssl_options = no_compression ssl_prefer_server_ciphers = yes userdb { driver = passwd }

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GNU gdb (GDB; openSUSE Leap 42.1) 7.9.1 Copyright (C) 2015 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later http://gnu.org/licenses/gpl.html This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "x86_64-suse-linux". Type "show configuration" for configuration details. For bug reporting instructions, please see: http://bugs.opensuse.org/. Find the GDB manual and other documentation resources online at: http://www.gnu.org/software/gdb/documentation/. For help, type "help". Type "apropos word" to search for commands related to "word"... Reading symbols from /usr/lib/dovecot/imap...Reading symbols from /usr/lib/debug/usr/lib/dovecot/imap.debug...done. done. [New LWP 8366] Core was generated by `dovecot/imap'. Program terminated with signal SIGSEGV, Segmentation fault. #0 mail_namespaces_get_root_sep (namespaces=0x0) at mail-namespace.c:601 601 mail-namespace.c: Datei oder Verzeichnis nicht gefunden. Missing separate debuginfos, use: zypper install glibc-debuginfo-2.19-19.1.x86_64 (gdb) bt full #0 mail_namespaces_get_root_sep (namespaces=0x0) at mail-namespace.c:601 No locals. #1 0x0000559bfb1792a5 in cmd_list_ref_root (ref=0x559bfd155d78 "", client=0x559bfd155020) at cmd-list.c:324 ns = 0x0 ns_prefix = 0x559bfb1963ea "" ns_sep = <optimized out> str = <optimized out> #2 cmd_list_full (cmd=0x559bfd155c00, lsub=<optimized out>) at cmd-list.c:461 client = 0x559bfd155020 args = 0x559bfd1289b8 list_args = 0x7f02a7ab0093 arg_count = 21915 patterns = {arr = {buffer = 0x559bfd155d88, element_size = 8}, v = 0x559bfd155d88, v_modifiable = 0x559bfd155d88} ref = 0x559bfd155d78 "" pattern = 0x559bfd155d80 "" str = <optimized out> #3 0x0000559bfb1818ed in command_exec (cmd=cmd@entry=0x559bfd155c00) at imap-commands.c:180 hook = 0x559bfd125110 finished = <optimized out> cmd_start_timeval = {tv_sec = 1469732468, tv_usec = 662738} cmd_start_bytes_in = 29 cmd_start_bytes_out = 746 __FUNCTION__ = "command_exec" #4 0x0000559bfb17fe4f in client_command_input (cmd=cmd@entry=0x559bfd155c00) at imap-client.c:969 client = 0x559bfd155020 command = <optimized out> __FUNCTION__ = "client_command_input" #5 0x0000559bfb17fedf in client_command_input (cmd=0x559bfd155c00) at imap-client.c:1029 client = 0x559bfd155020 command = <optimized out> __FUNCTION__ = "client_command_input" #6 0x0000559bfb180285 in client_handle_next_command (remove_io_r=<synthetic pointer>, client=0x559bfd155020) at imap-client.c:1069 No locals. #7 client_handle_input (client=client@entry=0x559bfd155020) at imap-client.c:1081 _data_stack_cur_id = 3 remove_io = false handled_commands = true __FUNCTION__ = "client_handle_input" #8 0x0000559bfb180785 in client_input (client=0x559bfd155020) at imap-client.c:1128 cmd = 0x559bfd136130 output = 0x559bfd155a40 bytes = 36 ---Type <return> to continue, or q <return> to quit--- __FUNCTION__ = "client_input" #9 0x00007f02a7ac49dc in io_loop_call_io (io=0x559bfd155b10) at ioloop.c:564 ioloop = 0x559bfd124740 t_id = 2 __FUNCTION__ = "io_loop_call_io" #10 0x00007f02a7ac5ce7 in io_loop_handler_run_internal (ioloop=ioloop@entry=0x559bfd124740) at ioloop-epoll.c:220 ctx = 0x559bfd126260 list = 0x559bfd127c90 io = <optimized out> tv = {tv_sec = 1799, tv_usec = 999471} events_count = <optimized out> msecs = <optimized out> ret = 1 i = 0 call = <optimized out> __FUNCTION__ = "io_loop_handler_run_internal" #11 0x00007f02a7ac4a65 in io_loop_handler_run (ioloop=ioloop@entry=0x559bfd124740) at ioloop.c:612 No locals. #12 0x00007f02a7ac4c18 in io_loop_run (ioloop=0x559bfd124740) at ioloop.c:588 __FUNCTION__ = "io_loop_run" #13 0x00007f02a7a5a1e3 in master_service_run (service=0x559bfd1245e0, callback=<optimized out>) at master-service.c:640 No locals. #14 0x0000559bfb173eb2 in main (argc=1, argv=0x559bfd124390) at main.c:460 set_roots = {0x559bfb39c520 , 0x7f02a8274b20 , 0x0} login_set = {auth_socket_path = 0x559bfd11c050 "\210\300\021\375\233U", postlogin_socket_path = 0x0, postlogin_timeout_secs = 60, callback = 0x559bfb18cbd0 , failure_callback = 0x559bfb18c560 , request_auth_token = 1} service_flags = <optimized out> storage_service_flags = <optimized out> username = 0x0 auth_socket_path = 0x559bfb19530e "auth-master" c = <optimized out> (gdb)