[Dovecot] Please help with Quota dict mysql configuration

[Denis Iskandarov]

After doing some configrations i got errors with quota and my setup is
brocken now:
dict:
dict {
  quotadict = mysql:/etc/dovecot/conf.d/sql/dovecot-dict-sql.conf
#  expire = sqlite:/etc/dovecot/dovecot-dict-sql.conf
}

dovecot-dict-sql.conf:
connect = host=localhost dbname=postfix user=postfix password=postfixadmin
map {
   pattern = priv/quota/storage
   table = quota2
   username_field = username
   value_field = bytes
}
map {
   pattern = priv/quota/messages
   table = quota2
   username_field = username
   value_field = messages
}

quota plugin config:
plugin {
  quota = dict:User quota::proxy::quotadict
  quota_rule = *:storage=1G
  quota_rule2 = Trash:storage=+100M
}

user_query field:
user_query = SELECT concat('/home/vmail/', maildir) as home,
 concat('maildir:/home/vmail/', maildir) as mail, 1001 AS uid, 12 AS gid,
 concat('dict:storage=',floor(quota/1000),' proxy::quotadict') AS quota
FROM mailbox WHERE username = '%u' AND active = '1'

Errors log:
dovecot.log:
Jun 24 11:41:24 imap: Debug: Loading modules from directory: /usr/lib/dovecot
Jun 24 11:41:24 imap: Debug: Module loaded:
/usr/lib/dovecot/lib10_quota_plugin.so
Jun 24 11:41:24 imap: Debug: Module loaded:
/usr/lib/dovecot/lib11_imap_quota_plugin.so
Jun 24 11:41:24 imap: Debug: Module loaded:
/usr/lib/dovecot/lib20_autocreate_plugin.so
Jun 24 11:41:24 imap: Debug: Added userdb setting:
mail=maildir:/home/vmail/office.dev/test/
Jun 24 11:41:24 imap: Debug: Added userdb setting:
plugin/quota=dict:storage=10240 proxy::quotadict
Jun 24 11:41:24 imap(test at office.dev): Debug: Effective uid=1001,
gid=12, home=/home/vmail/office.dev/test/
Jun 24 11:41:24 imap(test at office.dev): Debug: Quota root:
name=storage=10240 proxy backend=dict args=:quotadict
Jun 24 11:41:24 imap(test at office.dev): Debug: Quota rule:
root=storage=10240 proxy mailbox=* bytes=1073741824 messages=0
Jun 24 11:41:24 imap(test at office.dev): Debug: Quota rule:
root=storage=10240 proxy mailbox=Trash bytes=+104857600 messages=0
Jun 24 11:41:24 imap(test at office.dev): Debug: dict quota:
user=test at office.dev, uri=quotadict, noenforcing=0
Jun 24 11:41:24 imap(test at office.dev): Error: Dictionary URI is
missing ':': quotadict
Jun 24 11:41:24 imap(test at office.dev): Error: user test at office.dev:
Initialization failed: Failed to initialize quota: Quota root
storage=10240 proxy: init() failed
Jun 24 11:41:24 imap(test at office.dev): Error: Invalid user settings.
Refer to server log for more information.
Jun 24 11:41:24 imap-login: Info: Login: user=<test at office.dev>,
method=PLAIN, rip=192.168.0.11, lip=192.168.0.31, mpid=4611, TLS
Jun 24 11:41:24 imap-login: Warning: SSL alert: where=0x4008, ret=256:
warning close notify [192.168.0.11]

# doveadm quota recalc
doveadm(root): Error: chdir(/root/) failed: Permission denied
(euid=1001(vmail) egid=12(mail) missing +x perm: /root, euid is not
dir owner)
doveadm(root): Error: chdir(/root) failed: Permission denied
doveadm(root): Error: net_connect_unix(/var/run/dovecot//dict) failed:
Permission denied (euid=1001(vmail) egid=12(mail) missing +r perm:
/var/run/dovecot//dict, euid is not dir owner)

why this command working in my home /root dir ?
i have done next thing after:
service dict {
  unix_listener dict {
    mode = 0660
    user = vmail
    group = mail
  }
}
now i'm getting only next:
~]# doveadm quota recalc
doveadm(root): Error: chdir(/root/) failed: Permission denied
(euid=1001(vmail) egid=12(mail) missing +x perm: /root, euid is not
dir owner)
doveadm(root): Error: chdir(/root) failed: Permission denied

Whats wrong.
Please help.