Am 02.05.2013 19:54, schrieb Gedalya: > Dovecot is probably waiting for your storage to respond, you should > probably take a more detailed look at your NFS link and at the > conditions on the NFS server side. > > > On 05/02/2013 01:00 PM, Rafael VOlpe TI wrote: >> Hi Buddies, >> >> I have 2 servers running dovecot + postfix for pop/imap users. >> The users mailbox are in a Nfs storage. >> The load of server is ranging at 3.0 to 15.0. >> I really dont know what happened.. I read a lot about tuning of dovecot, >> and the changes are applied, how you can see. >> The Hardware of server is really good! >> The host have 8GB of mem and 2 sockets with 2 cores anyone. >> The server receives 900-1000 user connections in pop and imap. >> How i can aprimmorate this processes? >> >> Some errors are displayed on the console randomly when the load rises. >> Example: >> >> May 02 13:57:42 pop3(u...@domain.com): Error: Timeout (180s) while >> waiting >> for lock for transaction log file //var/vmail/ >> domain.com/user//dovecot.index.log >> May 02 13:57:42 pop3(u...@domain.com): Error: Couldn't init INBOX: >> Internal >> error occurred. Refer to server log for more information. [2013-05-02 >> 13:54:40] >> May 02 13:57:42 pop3(u...@domain.com): Info: Mailbox init failed top=0/0, >> retr=0/0, del=0/0, size=0 >> >> I really appreciate any suggestion! >> >> Thanks and Regards, >> >> Rafael Volpe >> >> >> Dovecot conf: >> >> # 2.0.19: /etc/dovecot/dovecot.conf >> # OS: Linux 3.2.0-40-generic x86_64 Ubuntu 12.04.2 LTS >> auth_mechanisms = plain login >> auth_verbose = yes >> debug_log_path = /var/log/dovecot-debug.log >> disable_plaintext_auth = no >> dotlock_use_excl = no >> first_valid_gid = 125 >> first_valid_uid = 125 >> last_valid_gid = 125 >> last_valid_uid = 125 >> log_path = /var/log/dovecot.log >> mail_debug = yes >> mail_fsync = always >> mail_location = maildir:/%Lh/:INDEX=/%Lh/ >> mail_nfs_index = yes >> mail_nfs_storage = yes >> mmap_disable = yes >> passdb { >> args = /etc/dovecot/dovecot-sql.conf >> driver = sql >> } >> protocols = " imap pop3" >> service auth { >> unix_listener /var/spool/postfix/private/auth { >> group = postfix >> mode = 0660 >> user = postfix >> } >> } >> service imap-login { >> inet_listener imap { >> port = 143 >> } >> inet_listener imaps { >> port = 993 >> ssl = yes >> } >> service_count = 0 >> } >> service pop3-login { >> inet_listener pop3 { >> port = 110 >> } >> inet_listener pop3s { >> port = 995 >> ssl = yes >> } >> } >> ssl_cert = </etc/postfix/ssl/wildcard.domain.com.crt >> ssl_key = </etc/postfix/ssl/wildcard.domain.com.key >> userdb { >> args = /etc/dovecot/dovecot-sql.conf >> driver = sql >> } >> verbose_proctitle = yes >> protocol imap { >> imap_idle_notify_interval = 2 mins >> mail_max_userip_connections = 150 >> } >> protocol pop3 { >> pop3_lock_session = no >> pop3_uidl_format = %08Xu%08Xv >> } >> >> >> Postfix conf: >> >> alias_database = hash:/etc/aliases >> alias_maps = hash:/etc/aliases >> append_dot_mydomain = no >> biff = no >> bounce_queue_lifetime = 1d >> broken_sasl_auth_clients = yes >> config_directory = /etc/postfix >> content_filter = smtp-amavis:[127.0.0.1]:10024 >> inet_interfaces = all >> mailbox_size_limit = 0 >> maximal_queue_lifetime = 1d >> message_size_limit = 20240000 >> myhostname = myname.mydomain.com >> mynetworks = 127.0.0.0/8 >> myorigin = /etc/mailname >> policy-spf_time_limit = 3600s >> readme_directory = no >> recipient_bcc_maps = mysql:/etc/postfix/mysql_bcc.cf >> recipient_delimiter = + >> relay_domains = proxy:mysql:/etc/postfix/mysql_relay_domains_maps.cf >> relayhost = >> sender_bcc_maps = mysql:/etc/postfix/mysql_bcc.cf >> smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache >> smtpd_banner = Welcome to $myhostname >> smtpd_client_restrictions = permit_mynetworks, permit_sasl_authenticated, >> check_client_access mysql:/etc/postfix/mysql_access.cf, >> reject_unknown_client, reject_unknown_client_hostname, >> reject_unauth_pipelining, reject_rbl_client bl.spamcop.net, >> reject_rbl_client zen.spamhaus.org, reject_rbl_client >> b.barracudacentral.org >> smtpd_end_of_data_restrictions = check_policy_service >> inet:127.0.0.1:10031 >> smtpd_helo_required = yes >> smtpd_helo_restrictions = permit_mynetworks, permit_sasl_authenticated, >> reject_non_fqdn_helo_hostname, reject_invalid_helo_hostname, >> reject_invalid_hostname >> smtpd_recipient_restrictions = reject_unknown_sender_domain, >> reject_unknown_recipient_domain, reject_non_fqdn_sender, >> reject_non_fqdn_recipient, reject_unlisted_recipient, >> check_policy_service >> inet:127.0.0.1:10031, permit_mynetworks, permit_sasl_authenticated, >> reject_unauth_destination, check_policy_service unix:private/policy-spf >> smtpd_reject_unlisted_sender = yes >> smtpd_sasl_auth_enable = yes >> smtpd_sasl_local_domain = $mydomain >> smtpd_sasl_path = private/auth >> smtpd_sasl_security_options = noanonymous >> smtpd_sasl_type = dovecot >> smtpd_sender_restrictions = permit_mynetworks, permit_sasl_authenticated, >> reject_unauth_pipelining, reject_unauth_destination >> smtpd_timeout = 30 >> smtpd_tls_cert_file = /etc/postfix/ssl/wildcard.domain.com.crt >> smtpd_tls_key_file = /etc/postfix/ssl/wildcard.domain.com.key >> smtpd_tls_security_level = may >> smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache >> transport_maps = mysql:/etc/postfix/mysql_transport.cf >> vacation_destination_recipient_limit = 1 >> virtual_alias_maps = mysql:/etc/postfix/mysql_virtual_alias_maps.cf >> virtual_gid_maps = static:125 >> virtual_mailbox_base = /var/vmail >> virtual_mailbox_domains = >> mysql:/etc/postfix/mysql_virtual_domains_maps.cf >> virtual_mailbox_limit = 51200000 >> virtual_mailbox_maps = mysql:/etc/postfix/mysql_virtual_mailbox_maps.cf >> virtual_minimum_uid = 125 >> virtual_transport = virtual >> virtual_uid_maps = static:125 >> >
did you notice http://wiki2.dovecot.org/NFS ... NFS is commonly used in one of these ways: Dovecot is run in a single computer. Dovecot is run in multiple computers, users are redirected more or less randomly to different computers. Dovecot is run in multiple computers, each user is assigned a specific computer which is used whenever possible. The only way to reliably implement the 2nd setup is with the director service ... so you might read and setup http://wiki2.dovecot.org/Director Best Regards MfG Robert Schetterer -- [*] sys4 AG http://sys4.de, +49 (89) 30 90 46 64 Franziskanerstraße 15, 81669 München Sitz der Gesellschaft: München, Amtsgericht München: HRB 199263 Vorstand: Patrick Ben Koetter, Axel von der Ohe, Marc Schiffbauer Aufsichtsratsvorsitzender: Florian Kirstein