Problem (bug?) copying mail folders

[Timo Sirainen]

On 24 Jan 2016, at 17:28, Keith Edmunds <kae at midnighthax.com> wrote:
> 
> I have reported a bug to Claws Mail
> (http://www.thewildbeast.co.uk/claws-mail/bugzilla/show_bug.cgi?id=3601);
> however, I see some behaviour from Dovecot that looks odd to me.
> 
> Background: I am trying to copy a folder to another part of the IMAP
> folder hierarchy. The destination parent folder is ACL protected; I
> have lirwstpeak rights. Claws initially tries to create the destination
> folder and then copy the mails from the source to destination.
> 
> The destination parent folder is 'public/accounts'; the folder being
> moved there is 'test' and 'public/accounts/test' does not exist at the
> start of the process. This is from Dovecot's rawlog:
> 
> 11 LIST "" "public/accounts/test"
> 11 OK List completed.
> 12 CREATE "public/accounts/test"
> 12 OK Create completed.
> 13 LIST "" "public/accounts/test"
> 13 OK List completed.
> 14 SUBSCRIBE "public/accounts/test"
> 14 NO Mailbox doesn't exist: public/accounts/test
> 15 UID COPY 1:2 "public/accounts/test"
> 15 NO [TRYCREATE] Mailbox doesn't exist: public/accounts/test
> 
> What I don't understand: the response to command 12 suggests that the
> destination folder has been created; the response to commands 14 and
> 15 suggest it hasn't.

Looks like a bug.

> Is there some kind of race condition here - or have I just
> misunderstood how this should work?
> ------------------------------------------------------------
> Running on ext4 filesystem; dovecot -n:
> 
> # 2.2.13: /etc/dovecot/dovecot.conf

I attempted to reproduce it, but it worked fine with v2.2.21. So maybe upgrading alone helps.