[Dovecot] Quota fs

[nuno marques]

Hi, I have the following error, any help? imap(user4): Error: quotactl(Q_GETQUOTA, /dev/mapper/VolGroup-lv_root) failed: Permission denied   The system as a whole is composed of:
dovecot-2.0.14-1_130.el6.x86_64
openldap-servers-2.4.19-15.el6_0.2.x86_64
postfix-2.6.6-2.1.el6_0.x86_64
mailscanner-4.84.3-1.noarch
spamassassin-3.3.1-2.el6.x86_64
centos 6 2.6.32-71.29.1.el6.x86_64 #1 SMP Mon Jun 27 19:49:27 BST 2011 x86_64 x86_64 x86_64 GNU/Linux # 2.0.14: /etc/dovecot/dovecot.conf
# OS: Linux 2.6.32-71.29.1.el6.x86_64 x86_64 CentOS Linux release 6.0 (Final)
auth_username_format = %Lu
disable_plaintext_auth = no
mail_location = maildir:~/Maildir
mail_plugins = " quota"
mbox_write_locks = fcntl
passdb {
  driver = pam
}
plugin {
  quota = fs:User quota
  quota_rule = *:storage=10M
  quota_rule2 = Trash:storage=+1M
  quota_warning = storage=95%% quota-warning 95 %u
  quota_warning2 = storage=10%% quota-warning 10 %u
}
service quota-warning {
  executable = script /usr/local/bin/quota-warning.sh
  unix_listener quota-warning {
    user = vmail
  }
  user = dovecot
}
ssl_cert = </etc/pki/dovecot/certs/dovecot.pem
ssl_key = </etc/pki/dovecot/private/dovecot.pem
userdb {
  driver = passwd
}
protocol imap {
  mail_plugins = " quota imap_quota"
}
protocol pop3 {
  mail_plugins = " quota quota"
  pop3_client_workarounds = outlook-no-nuls oe-ns-eoh
  pop3_uidl_format = %08Xu%08Xv