[Dovecot] doveadm purge -A via doveadm-proxy director fails after some users

[Daniel Parthey]

Daniel Parthey wrote:
> Timo Sirainen wrote:
> > On 29.6.2012, at 19.21, Daniel Parthey wrote:
> > 
> > > Jun 29 15:40:31 10.129.3.249 dovecot: doveadm(user31 at domain1.example.org):
> > > Error: user user31 at domain1.example.org: Error reading configuration:
> > > net_connect_unix(/var/run/dovecot/config) failed: Permission denied
> > 
> > I've noticed a similar problem happening somewhat randomly, but I still
> > haven't looked into why exactly it happens. Anyway the attached patch should
> > fix this specific error, but I'm not sure if there isn't another one. Try and
> > let me know? :)
> 
> Unfortunately, the problem still persists with dovecot 2.1.8,
> which already contains the following code:
> 
> enum master_service_flags service_flags =
> MASTER_SERVICE_FLAG_KEEP_CONFIG_OPEN;
> const char *error;
> master_service = master_service_init("doveadm", service_flags,
> &argc, &argv, NULL);
> if (master_getopt(master_service) > 0)
> return FATAL_DEFAULT;
> 
> The command
> /usr/bin/doveadm -c /etc/dovecot-director/dovecot-director.conf -D purge -A
> still generates the following errors after iterating some dozen users:
> 
> doveadm(nagios at metaways.de): Error: doveadm server failure
> doveadm: Error: Failed to iterate through some users
> 
> Which information should I provide to help debugging the problem?

The change in 2.1.8 didn't fix it and still does not iterate *all* users.
My current workaround is to list all users, run a for-loop over the userlist
and flush one mailbox after another via the director.

Any hints how to solve this?

Regards
Daniel
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