dovecot - Jun 2014 - Combining userdbs

Hi,

I think that using more than one userdb with setting the result
actions doesn't work as expected from the documentation.
The goal would be to set user-specific quotas for a few users with a
specific passwd-file like this :

cat /etc/dovecot/quotas
foo:x::::::userdb_quota_rule=*:storage=2G

The first userdb is passwd (with pam passwd):

userdb {
  driver = passwd
  result_failure = return-fail
  result_internalfail = return-fail
  result_success = continue-ok
  skip = never
}
The second one is for the specific quota

userdb {
  args = username_format=%n /etc/dovecot/quotas
  driver = passwd-file
  result_failure = continue
  result_internalfail = continue
  result_success = return-ok
  skip = notfound
}
User 'foo' exists in (pam) passd, but there's no place to store his
own
quota rule, that's why came handy to use a second userdb for storing just
one extra field.
That's working quiet well, he default quota is overriding form passwd-file.
BUT:
I've played a lot with changing the result_* and the 'skip'
parameters, but
none of them worked in the situation where a user ('bar') _only_ exists
in
passwd (and has to use the default quota config).

doveadm quota get -u bar
says
doveadm(bar): Fatal: User doesn't exist

With changing the parameters this error has gone, but the second userdb
doesn't used for user 'foo' - even if the parameters are :

userdb {
driver = passwd
result_failure = return-fail
result_internalfail = return-fail
result_success = continue                     <-- in theory, the next
userdb is coming
  skip = never
}
userdb {
args = username_format=%n /etc/dovecot/quotas
driver = passwd-file
result_failure = continue
result_internalfail = continue
 result_success = return-ok
skip = notfound
}

My question is that how should i set the result_* and 'skip' parameters
to
solve this :

- there's a default quota rule in the config
- some (a few) users has a larger quota
- there's no way to store the user-specific quotas in the 'real'
userdb
(because it's pam/passwd)

Thank you for your effort.

# dovecot -n
# 2.2.13 (de9b10f2e168): /etc/dovecot/dovecot.conf
# OS: Linux 3.11.0-15-generic i686 Ubuntu 12.04.4 LTS
auth_debug = yes
auth_debug_passwords = yes
auth_verbose = yes
auth_verbose_passwords = yes
disable_plaintext_auth = no
listen = *
log_path = /var/log/dovecot.log
mail_debug = yes
mail_location = maildir:~/Maildir
mail_plugins = " quota"
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 ihave duplicate
namespace inbox {
  inbox = yes
  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 }
passdb {
  driver = pam
}
plugin {
  quota = maildir:User quota
  quota_rule = *:storage=1G
  quota_rule2 = Trash:storage=+100M
  sieve = ~/.dovecot.sieve
  sieve_dir = ~/sieve
}
protocols = " imap sieve"
service managesieve-login {
  inet_listener sieve {
    port = 4190
  }
}
service managesieve {
  process_limit = 1024
}
ssl = no
ssl_cert = </etc/dovecot/private/dovecot.pem
ssl_key = </etc/dovecot/private/dovecot.pem
userdb {
  driver = passwd
  result_failure = return-fail
  result_internalfail = return-fail
  result_success = continue-ok
}
userdb {
  args = username_format=%n /etc/dovecot/quotas
  driver = passwd-file
  result_failure = continue-ok
  result_internalfail = continue-ok
  skip = notfound
}
protocol imap {
  mail_plugins = quota
}