dovecot - Mar 2021 - Bug in renaming folder hierarchies - any reaction ?

Hi,

no comments on this?  This is definitly with two different IMAP Clients
reproducible.

This led already to some message loss in user Mailboxes.

> we discovered a major problem with renaming folders with subfolders
> 
> testszenario:
> 
> folders:
> 
> test1
> test1/test1-1
> test1/test1-2
> 
> all 3 folders contain a test message
> 
> after renaming the top level folder  test1 to test2 following folders
exist:
> 
> test2
> test2/test1-1
> test2/test1-2
> 
> the subfolders test1-1 and test1-2 are empty, the top level folder contains
the
> correct message.
> 
> 
> Now renmaing test2 back to test1:
> 
> Alle folders again  contain their messages.
> 
> So this looks like during renaming the top level folder just the message
> references for the subfolders got lost, and with renaming back they are
there again.
> 
> I can reproduce this behavior both with thunderbird and Horde Webmail as a
> client, also it happens with a second different dovecot setup
> 

Sincerly,
Klaus Steinberger
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Hi,

this might be caused by FULLDIRNAME=DbOx-mAiLs (as far fetched as it sounds).
Would it be possible for you to try it out if it happens if you remove this
setting?

Aki
> On 02/03/2021 21:35 Klaus Steinberger <klaus.steinberger at
physik.uni-muenchen.de> wrote:
> 
>  
> Hi,
> 
> no comments on this?  This is definitly with two different IMAP Clients
> reproducible.
> 
> This led already to some message loss in user Mailboxes.
> 
> 
> > we discovered a major problem with renaming folders with subfolders
> > 
> > testszenario:
> > 
> > folders:
> > 
> > test1
> > test1/test1-1
> > test1/test1-2
> > 
> > all 3 folders contain a test message
> > 
> > after renaming the top level folder  test1 to test2 following folders
exist:
> > 
> > test2
> > test2/test1-1
> > test2/test1-2
> > 
> > the subfolders test1-1 and test1-2 are empty, the top level folder
contains the
> > correct message.
> > 
> > 
> > Now renmaing test2 back to test1:
> > 
> > Alle folders again  contain their messages.
> > 
> > So this looks like during renaming the top level folder just the
message
> > references for the subfolders got lost, and with renaming back they
are there again.
> > 
> > I can reproduce this behavior both with thunderbird and Horde Webmail
as a
> > client, also it happens with a second different dovecot setup
> > 
> 
> 
> Sincerly,
> Klaus Steinberger