dovecot - Feb 2012 - Folder name migration when moving from 2.0.x to 2.1.x?

Today I encountered this after upgrading:

Feb 18 18:15:40 postamt dovecot: imap(lehnertr): Panic: LIST: Mailbox name not
UTF-8: INBOX.Entw?rfe
Feb 18 18:15:40 postamt dovecot: imap(lehnertr): Error: Raw backtrace:
/usr/local/lib/dovecot/libdovecot.so.0(+0x4104a) [0xb75cc04a] ->
/usr/local/lib/dovecot/libdovecot.so.0(+0x410bb) [0xb75cc0bb] ->
/usr/local/lib/dovecot/libdovecot.so.0(i_fatal+0) [0xb75cc9b7] ->
dovecot/imap [lehnertr 85.178.5.225 LSUB]() [0x8052bac] ->
dovecot/imap [lehnertr 85.178.5.225 LSUB](cmd_list_full+0x4af)
[0x80530df] -> dovecot/imap [lehnertr 85.178.5.225
LSUB](cmd_lsub+0x17) [0x8053537] -> dovecot/imap [lehnertr
85.178.5.225 LSUB](command_exec+0x32) [0x8057c92] -> dovecot/imap
[lehnertr 85.178.5.225 LSUB]() [0x8056c7d] -> dovecot/imap [lehnertr
85.178.5.225 LSUB]() [0x8056d95] -> dovecot/imap [lehnertr
85.178.5.225 LSUB](client_handle_input+0x135) [0x8056fa5] ->
dovecot/imap [lehnertr 85.178.5.225 LSUB](client_input+0x60)
[0x80578a0] ->
/usr/local/lib/dovecot/libdovecot.so.0(io_loop_call_io+0x44)
[0xb75dafb4] ->
/usr/local/lib/dovecot/libdovecot.so.0(io_loop_handler_run+0xce)
[0xb75dbe5e] -> /usr/local/lib/dovecot/libdovecot.so.0

a) It should not PANIC (I think)
b) How can I globally "fix" the folder names (preferably in such a way
   that I am able to switch back and forth between 2.0 and 2.1)
-- 
Ralf Hildebrandt
  Gesch?ftsbereich IT | Abteilung Netzwerk
  Charit? - Universit?tsmedizin Berlin
  Campus Benjamin Franklin
  Hindenburgdamm 30 | D-12203 Berlin
  Tel. +49 30 450 570 155 | Fax: +49 30 450 570 962
  ralf.hildebrandt at charite.de | http://www.charite.de

On 18.2.2012, at 19.18, Ralf Hildebrandt wrote:
> Today I encountered this after upgrading:
> 
> Feb 18 18:15:40 postamt dovecot: imap(lehnertr): Panic: LIST: Mailbox name
not UTF-8: INBOX.Entw?rfe
..
> a) It should not PANIC (I think)
Right.
> b) How can I globally "fix" the folder names (preferably in such
a way
>   that I am able to switch back and forth between 2.0 and 2.1)
What does this look in filesystem? Is it not in mUTF-7? If the problem is in
filesystem, rename it to mUTF7 (you can use doveadm mailbox mutf7)

* Timo Sirainen <tss at iki.fi>:
> On 18.2.2012, at 19.18, Ralf Hildebrandt wrote:
> 
> > Today I encountered this after upgrading:
> > 
> > Feb 18 18:15:40 postamt dovecot: imap(lehnertr): Panic: LIST: Mailbox
name not UTF-8: INBOX.Entw?rfe
> ..
> > a) It should not PANIC (I think)
> 
> Right.
> 
> > b) How can I globally "fix" the folder names (preferably in
such a way
> >   that I am able to switch back and forth between 2.0 and 2.1)
> 
> What does this look in filesystem? Is it not in mUTF-7? If the problem
> is in filesystem, rename it to mUTF7 (you can use doveadm mailbox
> mutf7)
# find /home -mindepth 5 -maxdepth 5 -type d -name .Entw*
/home/h/o/hoffmanb/Maildir/.Entw&APw-rfe
/home/h/d/hdaebrit/Maildir/.Entw&APw-rfe
/home/h/e/hermel/Maildir/.Entw&APw-rfe
/home/h/l/hlammert/Maildir/.Entw&APw-rfe
...
/home/p/d/pdeindl/Maildir/.Entw&,,0-rfe
/home/m/v/mviehweg/Maildir/.Entw&,,0-rfe
/home/m/k/mkoehn/Maildir/.Entw&,,0-rfe

-- 
Ralf Hildebrandt
  Gesch?ftsbereich IT | Abteilung Netzwerk
  Charit? - Universit?tsmedizin Berlin
  Campus Benjamin Franklin
  Hindenburgdamm 30 | D-12203 Berlin
  Tel. +49 30 450 570 155 | Fax: +49 30 450 570 962
  ralf.hildebrandt at charite.de | http://www.charite.de

* Ralf Hildebrandt <Ralf.Hildebrandt at charite.de>:
> # find /home -mindepth 5 -maxdepth 5 -type d -name .Entw*
> /home/h/o/hoffmanb/Maildir/.Entw&APw-rfe
> /home/h/d/hdaebrit/Maildir/.Entw&APw-rfe
> /home/h/e/hermel/Maildir/.Entw&APw-rfe
> /home/h/l/hlammert/Maildir/.Entw&APw-rfe
> ...
> /home/p/d/pdeindl/Maildir/.Entw&,,0-rfe
> /home/m/v/mviehweg/Maildir/.Entw&,,0-rfe
> /home/m/k/mkoehn/Maildir/.Entw&,,0-rfe
Some stats:

      #  Name
    ==================      2 .Entw&-APw-rfe
      9 .Entw&,,0-rfe
     91 .Entw&APw-rfe
			    

-- 
Ralf Hildebrandt
  Gesch?ftsbereich IT | Abteilung Netzwerk
  Charit? - Universit?tsmedizin Berlin
  Campus Benjamin Franklin
  Hindenburgdamm 30 | D-12203 Berlin
  Tel. +49 30 450 570 155 | Fax: +49 30 450 570 962
  ralf.hildebrandt at charite.de | http://www.charite.de

Am 18. Februar 2012 19:49 schrieb Ralf Hildebrandt
<Ralf.Hildebrandt at charite.de>:
> * Ralf Hildebrandt <Ralf.Hildebrandt at charite.de>:
>
>> # find /home -mindepth 5 -maxdepth 5 -type d -name .Entw*
>> /home/h/o/hoffmanb/Maildir/.Entw&APw-rfe
>> /home/h/d/hdaebrit/Maildir/.Entw&APw-rfe
>> /home/h/e/hermel/Maildir/.Entw&APw-rfe
>> /home/h/l/hlammert/Maildir/.Entw&APw-rfe
>> ...
>> /home/p/d/pdeindl/Maildir/.Entw&,,0-rfe
>> /home/m/v/mviehweg/Maildir/.Entw&,,0-rfe
>> /home/m/k/mkoehn/Maildir/.Entw&,,0-rfe
>
> Some stats:
>
> ? ? ?# ?Name
> ? ?==================> ? ? ?2 .Entw&-APw-rfe
> ? ? ?9 .Entw&,,0-rfe
> ? ? 91 .Entw&APw-rfe
>
Use something like "Entwuerfe" and not "Entw?rfe".

--
Chris

On 18.2.2012, at 19.18, Ralf Hildebrandt wrote:
> Feb 18 18:15:40 postamt dovecot: imap(lehnertr): Panic: LIST: Mailbox name
not UTF-8: INBOX.Entw?rfe
http://hg.dovecot.org/dovecot-2.1/rev/7d0d76df719f should fix this by removing
the invalid entry from subscriptions file (probably broken client added it in
some earlier Dovecot version that didn't disallow it).