Dne 07.09.2020 v 12:43 Sami Ketola napsal(a):>> On 7. Sep 2020, at 12.38, Miloslav H?la <miloslav.hula at gmail.com> wrote: >> >> Hello, >> >> I sent this into the Linux Kernel Btrfs mailing list and I got reply: "RAID-1 would be preferable" (https://lore.kernel.org/linux-btrfs/7b364356-7041-7d18-bd77-f60e0e2e2112 at lechevalier.se/T/). May I ask you for the comments as from people around the Dovecot? >> >> >> We are using btrfs RAID-10 (/data, 4.7TB) on a physical Supermicro server with Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz and 125GB of RAM. We run 'btrfs scrub start -B -d /data' every Sunday as a cron task. It takes about 50 minutes to finish. >> >> # uname -a >> Linux imap 4.9.0-12-amd64 #1 SMP Debian 4.9.210-1 (2020-01-20) x86_64 GNU/Linux >> >> RAID is a composition of 16 harddrives. Harddrives are connected via AVAGO MegaRAID SAS 9361-8i as a RAID-0 devices. All harddrives are SAS 2.5" 15k drives. >> >> Server serves as a IMAP with Dovecot 2.2.27-3+deb9u6, 4104 accounts, Mailbox format, LMTP delivery. > > does "Mailbox format" mean mbox? > > If so, then there is your bottleneck. mbox is the slowest possible mailbox format there is. > > SamiSorry, no, it is a typo. We are using "Maildir". "doveconf -a" attached Milo # 2.2.27 (c0f36b0): /etc/dovecot/dovecot.conf # Pigeonhole version 0.4.16 (fed8554) # OS: Linux 4.9.0-12-amd64 x86_64 Debian 9.13 # NOTE: Send doveconf -n output instead when asking for help. auth_anonymous_username = anonymous auth_cache_negative_ttl = 30 secs auth_cache_size = 100 M auth_cache_ttl = 30 secs auth_debug = no auth_debug_passwords = no auth_default_realm auth_failure_delay = 2 secs auth_gssapi_hostname auth_krb5_keytab auth_master_user_separator auth_mechanisms = plain auth_policy_hash_mech = sha256 auth_policy_hash_nonce auth_policy_hash_truncate = 12 auth_policy_reject_on_fail = no auth_policy_request_attributes = login=%{orig_username} pwhash=%{hashed_password} remote=%{real_rip} auth_policy_server_api_header auth_policy_server_timeout_msecs = 2000 auth_policy_server_url auth_proxy_self auth_realms auth_socket_path = auth-userdb auth_ssl_require_client_cert = no auth_ssl_username_from_cert = no auth_stats = no auth_use_winbind = no auth_username_chars = abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ01234567890.-_@ auth_username_format = %Lu auth_username_translation auth_verbose = no auth_verbose_passwords = no auth_winbind_helper_path = /usr/bin/ntlm_auth auth_worker_max_count = 30 base_dir = /var/run/dovecot config_cache_size = 1 M debug_log_path default_client_limit = 1000 default_idle_kill = 1 mins default_internal_user = dovecot default_login_user = dovenull default_process_limit = 100 default_vsz_limit = 256 M deliver_log_format = msgid=%m: %$ dict_db_config director_consistent_hashing = no director_doveadm_port = 0 director_flush_socket director_mail_servers director_servers director_user_expire = 15 mins director_user_kick_delay = 2 secs director_username_hash = %u disable_plaintext_auth = yes dotlock_use_excl = yes doveadm_allowed_commands doveadm_api_key doveadm_password doveadm_port = 0 doveadm_socket_path = doveadm-server doveadm_username = doveadm doveadm_worker_count = 0 dsync_alt_char = _ dsync_features dsync_remote_cmd = ssh -l%{login} %{host} doveadm dsync-server -u%u -U first_valid_gid = 1 first_valid_uid = 109 haproxy_timeout = 3 secs haproxy_trusted_networks hostname imap_capability imap_client_workarounds imap_hibernate_timeout = 0 imap_id_log = * imap_id_send = name * imap_idle_notify_interval = 2 mins imap_logout_format = in=%i out=%o imap_max_line_length = 64 k imap_metadata = no imap_urlauth_host imap_urlauth_logout_format = in=%i out=%o imap_urlauth_port = 143 imapc_cmd_timeout = 5 mins imapc_features imapc_host imapc_list_prefix imapc_master_user imapc_max_idle_time = 29 mins imapc_max_line_length = 0 imapc_password imapc_port = 143 imapc_rawlog_dir imapc_sasl_mechanisms imapc_ssl = no imapc_ssl_verify = yes imapc_user import_environment = TZ CORE_OUTOFMEM CORE_ERROR LISTEN_PID LISTEN_FDS info_log_path instance_name = dovecot last_valid_gid = 0 last_valid_uid = 0 lda_mailbox_autocreate = no lda_mailbox_autosubscribe = no lda_original_recipient_header libexec_dir = /usr/lib/dovecot listen = *, :: lmtp_address_translate lmtp_hdr_delivery_address = final lmtp_proxy = no lmtp_rcpt_check_quota = no lmtp_save_to_detail_mailbox = no lmtp_user_concurrency_limit = 0 lock_method = fcntl log_path = syslog log_timestamp = "%b %d %H:%M:%S " login_access_sockets login_greeting = Dovecot ready. login_log_format = %$: %s login_log_format_elements = user=<%u> method=%m rip=%r lip=%l mpid=%e %c session=<%{session}> login_plugin_dir = /usr/lib/dovecot/modules/login login_plugins login_proxy_max_disconnect_delay = 0 login_source_ips login_trusted_networks mail_access_groups mail_always_cache_fields mail_attachment_dir mail_attachment_fs = sis posix mail_attachment_hash = %{sha1} mail_attachment_min_size = 128 k mail_attribute_dict mail_cache_fields = flags mail_cache_min_mail_count = 0 mail_chroot mail_debug = no mail_fsync = optimized mail_full_filesystem_access = no mail_gid = vmail mail_home = /data/vmail/user/%n mail_location = maildir:/data/vmail/user/%n/Maildir mail_log_prefix = "%s(%u): " mail_max_keyword_length = 50 mail_max_lock_timeout = 0 mail_max_userip_connections = 10 mail_never_cache_fields = imap.envelope mail_nfs_index = no mail_nfs_storage = no mail_plugin_dir = /usr/lib/dovecot/modules mail_plugins mail_prefetch_count = 0 mail_privileged_group mail_save_crlf = yes mail_server_admin mail_server_comment mail_shared_explicit_inbox = no mail_temp_dir = /tmp mail_temp_scan_interval = 1 weeks mail_uid = vmail mailbox_idle_check_interval = 30 secs mailbox_list_index = no mailbox_list_index_very_dirty_syncs = no maildir_broken_filename_sizes = no maildir_copy_with_hardlinks = yes maildir_empty_new = no maildir_stat_dirs = no maildir_very_dirty_syncs = no managesieve_client_workarounds managesieve_implementation_string = Dovecot Pigeonhole managesieve_logout_format = bytes=%i/%o managesieve_max_compile_errors = 5 managesieve_max_line_length = 65536 managesieve_notify_capability = mailto managesieve_sieve_capability = fileinto reject envelope encoded-character vacation subaddress comparator-i;ascii-numeric relational regex copy include variables body enotify environment mailbox date index ihave duplicate mime foreverypart extracttext vacation-seconds imapflags notify master_user_separator mbox_dirty_syncs = yes mbox_dotlock_change_timeout = 2 mins mbox_lazy_writes = yes mbox_lock_timeout = 5 mins mbox_md5 = apop3d mbox_min_index_size = 0 mbox_read_locks = fcntl mbox_very_dirty_syncs = no mbox_write_locks = fcntl dotlock mdbox_preallocate_space = no mdbox_purge_preserve_alt = no mdbox_rotate_interval = 0 mdbox_rotate_size = 2 M mmap_disable = no namespace { disabled = no hidden = no ignore_on_failure = no inbox = no list = children location = maildir:/data/vmail/user/%%n/Maildir:INDEXPVT=/data/vmail/user/%n/Maildir/Shared/%%n:SUBSCRIPTIONS=../../%n/Maildir/Shared/subscriptions-%%n order = 0 prefix = user.%%n. separator = . subscriptions = yes type = shared } namespace inbox { disabled = no hidden = no ignore_on_failure = no inbox = yes list = yes location mailbox Archives { auto = no autoexpunge = 0 autoexpunge_max_mails = 0 comment driver special_use = \Archive } mailbox Drafts { auto = subscribe autoexpunge = 0 autoexpunge_max_mails = 0 comment driver special_use = \Drafts } mailbox Junk { auto = no autoexpunge = 0 autoexpunge_max_mails = 0 comment driver special_use = \Junk } mailbox Sent { auto = subscribe autoexpunge = 0 autoexpunge_max_mails = 0 comment driver special_use = \Sent } mailbox "Sent Messages" { auto = no autoexpunge = 0 autoexpunge_max_mails = 0 comment driver special_use = \Sent } mailbox Trash { auto = subscribe autoexpunge = 0 autoexpunge_max_mails = 0 comment driver special_use = \Trash } mailbox spam { auto = subscribe autoexpunge = 0 autoexpunge_max_mails = 0 comment driver special_use = \Junk } order = 0 prefix = INBOX. separator = . subscriptions = yes type = private } passdb { args = /etc/dovecot/deny-users auth_verbose = default default_fields deny = yes driver = passwd-file master = no name override_fields pass = no result_failure = continue result_internalfail = continue result_success = return-ok skip = never } passdb { args = /etc/dovecot/dovecot-ldap.conf.ext auth_verbose = default default_fields deny = no driver = ldap master = no name override_fields pass = no result_failure = continue result_internalfail = continue result_success = return-ok skip = never } plugin { acl = vfile acl_shared_dict = file:/data/vmail/global/shared-mailboxes sieve = file:/data/vmail/user/%n/sieve;active=/data/vmail/user/%n/enabled.sieve sieve_extensions = +notify +imapflags -imap4flags +vacation-seconds sieve_vacation_min_period = 0 } pop3_client_workarounds pop3_delete_type = default pop3_deleted_flag pop3_enable_last = no pop3_fast_size_lookups = no pop3_lock_session = no pop3_logout_format = top=%t/%p, retr=%r/%b, del=%d/%m, size=%s pop3_no_flag_updates = no pop3_reuse_xuidl = no pop3_save_uidl = no pop3_uidl_duplicates = allow pop3_uidl_format = %v.%u pop3c_host pop3c_master_user pop3c_password pop3c_port = 110 pop3c_quick_received_date = no pop3c_rawlog_dir pop3c_ssl = no pop3c_ssl_verify = yes pop3c_user = %u postmaster_address = postmaster@%d protocols = " imap lmtp sieve pop3" quota_full_tempfail = no rawlog_dir recipient_delimiter = + rejection_reason = Your message to <%t> was automatically rejected:%n%r rejection_subject = Rejected: %s replication_dsync_parameters = -d -N -l 30 -U replication_full_sync_interval = 1 days replication_max_conns = 10 replicator_host = replicator replicator_port = 0 sendmail_path = /usr/sbin/sendmail service aggregator { chroot = . client_limit = 0 drop_priv_before_exec = no executable = aggregator extra_groups fifo_listener replication-notify-fifo { group mode = 0600 user } group idle_kill = 0 privileged_group process_limit = 0 process_min_avail = 0 protocol service_count = 0 type unix_listener replication-notify { group mode = 0600 user } user = $default_internal_user vsz_limit = 18446744073709551615 B } service anvil { chroot = empty client_limit = 0 drop_priv_before_exec = no executable = anvil extra_groups group idle_kill = 4294967295 secs privileged_group process_limit = 1 process_min_avail = 1 protocol service_count = 0 type = anvil unix_listener anvil-auth-penalty { group mode = 0600 user } unix_listener anvil { group mode = 0600 user } user = $default_internal_user vsz_limit = 18446744073709551615 B } service auth-worker { chroot client_limit = 1 drop_priv_before_exec = no executable = auth -w extra_groups group idle_kill = 0 privileged_group process_limit = 0 process_min_avail = 0 protocol service_count = 1 type unix_listener auth-worker { group mode = 0600 user = $default_internal_user } user vsz_limit = 18446744073709551615 B } service auth { chroot client_limit = 0 drop_priv_before_exec = no executable = auth extra_groups group idle_kill = 0 privileged_group process_limit = 1 process_min_avail = 0 protocol service_count = 0 type unix_listener auth-client { group mode = 0600 user = $default_internal_user } unix_listener auth-login { group mode = 0600 user = $default_internal_user } unix_listener auth-master { group mode = 0600 user } unix_listener auth-userdb { group mode = 0666 user = $default_internal_user } unix_listener login/login { group mode = 0666 user } unix_listener token-login/tokenlogin { group mode = 0666 user } user = $default_internal_user vsz_limit = 18446744073709551615 B } service config { chroot client_limit = 0 drop_priv_before_exec = no executable = config extra_groups group idle_kill = 0 privileged_group process_limit = 0 process_min_avail = 0 protocol service_count = 0 type = config unix_listener config { group mode = 0600 user } user vsz_limit = 18446744073709551615 B } service dict-async { chroot client_limit = 0 drop_priv_before_exec = no executable = dict extra_groups group idle_kill = 0 privileged_group process_limit = 0 process_min_avail = 0 protocol service_count = 0 type unix_listener dict-async { group mode = 0600 user } user = $default_internal_user vsz_limit = 18446744073709551615 B } service dict { chroot client_limit = 1 drop_priv_before_exec = no executable = dict extra_groups group idle_kill = 0 privileged_group process_limit = 0 process_min_avail = 0 protocol service_count = 0 type unix_listener dict { group mode = 0600 user } user = $default_internal_user vsz_limit = 18446744073709551615 B } service director { chroot = . client_limit = 0 drop_priv_before_exec = no executable = director extra_groups fifo_listener login/proxy-notify { group mode = 00 user } group idle_kill = 4294967295 secs inet_listener { address haproxy = no port = 0 reuse_port = no ssl = no } privileged_group process_limit = 1 process_min_avail = 0 protocol service_count = 0 type unix_listener director-admin { group mode = 0600 user } unix_listener director-userdb { group mode = 0600 user } unix_listener login/director { group mode = 00 user } user = $default_internal_user vsz_limit = 18446744073709551615 B } service dns_client { chroot client_limit = 1 drop_priv_before_exec = no executable = dns-client extra_groups group idle_kill = 0 privileged_group process_limit = 0 process_min_avail = 0 protocol service_count = 0 type unix_listener dns-client { group mode = 0666 user } user = $default_internal_user vsz_limit = 18446744073709551615 B } service doveadm { chroot client_limit = 1 drop_priv_before_exec = no executable = doveadm-server extra_groups group idle_kill = 0 privileged_group process_limit = 0 process_min_avail = 0 protocol service_count = 1 type unix_listener doveadm-server { group mode = 0600 user } user vsz_limit = 18446744073709551615 B } service imap-hibernate { chroot client_limit = 0 drop_priv_before_exec = no executable = imap-hibernate extra_groups group idle_kill = 0 privileged_group process_limit = 0 process_min_avail = 0 protocol = imap service_count = 0 type unix_listener imap-hibernate { group mode = 0600 user } user = $default_internal_user vsz_limit = 18446744073709551615 B } service imap-login { chroot = login client_limit = 0 drop_priv_before_exec = no executable = imap-login extra_groups group idle_kill = 0 inet_listener imap { address haproxy = no port = 143 reuse_port = no ssl = no } inet_listener imaps { address haproxy = no port = 993 reuse_port = no ssl = yes } privileged_group process_limit = 0 process_min_avail = 10 protocol = imap service_count = 0 type = login user = $default_login_user vsz_limit = 18446744073709551615 B } service imap-urlauth-login { chroot = token-login client_limit = 0 drop_priv_before_exec = no executable = imap-urlauth-login extra_groups group idle_kill = 0 privileged_group process_limit = 0 process_min_avail = 0 protocol = imap service_count = 1 type = login unix_listener imap-urlauth { group mode = 0666 user } user = $default_login_user vsz_limit = 18446744073709551615 B } service imap-urlauth-worker { chroot client_limit = 1 drop_priv_before_exec = no executable = imap-urlauth-worker extra_groups group idle_kill = 0 privileged_group process_limit = 1024 process_min_avail = 0 protocol = imap service_count = 1 type unix_listener imap-urlauth-worker { group mode = 0600 user = $default_internal_user } user vsz_limit = 18446744073709551615 B } service imap-urlauth { chroot client_limit = 1 drop_priv_before_exec = no executable = imap-urlauth extra_groups group idle_kill = 0 privileged_group process_limit = 1024 process_min_avail = 0 protocol = imap service_count = 1 type unix_listener token-login/imap-urlauth { group mode = 0666 user } user = $default_internal_user vsz_limit = 18446744073709551615 B } service imap { chroot client_limit = 1 drop_priv_before_exec = no executable = imap extra_groups group idle_kill = 0 privileged_group process_limit = 2048 process_min_avail = 0 protocol = imap service_count = 1 type unix_listener imap-master { group mode = 0600 user } unix_listener login/imap { group mode = 0666 user } user vsz_limit = 18446744073709551615 B } service indexer-worker { chroot client_limit = 1 drop_priv_before_exec = no executable = indexer-worker extra_groups group idle_kill = 0 privileged_group process_limit = 10 process_min_avail = 0 protocol service_count = 0 type unix_listener indexer-worker { group mode = 0600 user = $default_internal_user } user vsz_limit = 18446744073709551615 B } service indexer { chroot client_limit = 0 drop_priv_before_exec = no executable = indexer extra_groups group idle_kill = 0 privileged_group process_limit = 1 process_min_avail = 0 protocol service_count = 0 type unix_listener indexer { group mode = 0666 user } user = $default_internal_user vsz_limit = 18446744073709551615 B } service ipc { chroot = empty client_limit = 0 drop_priv_before_exec = no executable = ipc extra_groups group idle_kill = 0 privileged_group process_limit = 1 process_min_avail = 0 protocol service_count = 0 type unix_listener ipc { group mode = 0600 user } unix_listener login/ipc-proxy { group mode = 0600 user = $default_login_user } user = $default_internal_user vsz_limit = 18446744073709551615 B } service lmtp { chroot client_limit = 1 drop_priv_before_exec = no executable = lmtp extra_groups group idle_kill = 0 privileged_group process_limit = 120 process_min_avail = 15 protocol = lmtp service_count = 0 type unix_listener /var/spool/postfix/private/dovecot-lmtp { group = postfix mode = 0600 user = postfix } unix_listener lmtp { group mode = 0666 user } user = vmail vsz_limit = 18446744073709551615 B } service log { chroot client_limit = 0 drop_priv_before_exec = no executable = log extra_groups group idle_kill = 4294967295 secs privileged_group process_limit = 1 process_min_avail = 0 protocol service_count = 0 type = log unix_listener log-errors { group mode = 0600 user } user vsz_limit = 18446744073709551615 B } service managesieve-login { chroot = login client_limit = 0 drop_priv_before_exec = no executable = managesieve-login extra_groups group idle_kill = 0 inet_listener sieve { address = 127.0.0.1 haproxy = no port = 4190 reuse_port = no ssl = no } privileged_group process_limit = 0 process_min_avail = 0 protocol = sieve service_count = 1 type = login user = $default_login_user vsz_limit = 18446744073709551615 B } service managesieve { chroot client_limit = 1 drop_priv_before_exec = no executable = managesieve extra_groups group idle_kill = 0 privileged_group process_limit = 0 process_min_avail = 0 protocol = sieve service_count = 1 type unix_listener login/sieve { group mode = 0666 user } user vsz_limit = 18446744073709551615 B } service pop3-login { chroot = login client_limit = 0 drop_priv_before_exec = no executable = pop3-login extra_groups group idle_kill = 0 inet_listener pop3 { address haproxy = no port = 110 reuse_port = no ssl = no } inet_listener pop3s { address haproxy = no port = 995 reuse_port = no ssl = yes } privileged_group process_limit = 0 process_min_avail = 0 protocol = pop3 service_count = 1 type = login user = $default_login_user vsz_limit = 18446744073709551615 B } service pop3 { chroot client_limit = 1 drop_priv_before_exec = no executable = pop3 extra_groups group idle_kill = 0 privileged_group process_limit = 1024 process_min_avail = 0 protocol = pop3 service_count = 1 type unix_listener login/pop3 { group mode = 0666 user } user vsz_limit = 18446744073709551615 B } service replicator { chroot client_limit = 0 drop_priv_before_exec = no executable = replicator extra_groups group idle_kill = 4294967295 secs privileged_group process_limit = 1 process_min_avail = 0 protocol service_count = 0 type unix_listener replicator-doveadm { group mode = 00 user = $default_internal_user } unix_listener replicator { group mode = 0600 user = $default_internal_user } user vsz_limit = 18446744073709551615 B } service ssl-params { chroot client_limit = 0 drop_priv_before_exec = no executable = ssl-params extra_groups group idle_kill = 0 privileged_group process_limit = 0 process_min_avail = 0 protocol service_count = 0 type = startup unix_listener login/ssl-params { group mode = 0666 user } unix_listener ssl-params { group mode = 0666 user } user vsz_limit = 18446744073709551615 B } service stats { chroot = empty client_limit = 0 drop_priv_before_exec = no executable = stats extra_groups fifo_listener stats-mail { group mode = 0600 user } fifo_listener stats-user { group mode = 0600 user } group idle_kill = 4294967295 secs privileged_group process_limit = 1 process_min_avail = 0 protocol service_count = 0 type unix_listener stats { group mode = 0600 user } user = $default_internal_user vsz_limit = 18446744073709551615 B } service tcpwrap { chroot client_limit = 1 drop_priv_before_exec = no executable = tcpwrap extra_groups group idle_kill = 0 privileged_group process_limit = 0 process_min_avail = 0 protocol service_count = 0 type user = $default_internal_user vsz_limit = 18446744073709551615 B } shutdown_clients = yes ssl = required ssl_ca ssl_cert = </etc/dovecot/private/imap.chained.crt ssl_cert_username_field = commonName ssl_cipher_list = ALL:!LOW:!SSLv2:!EXP:!aNULL ssl_client_ca_dir = /etc/ssl/certs ssl_client_ca_file ssl_client_cert ssl_client_key ssl_crypto_device ssl_dh_parameters_length = 1024 ssl_key = # hidden, use -P to show it ssl_key_password ssl_options ssl_parameters_regenerate = 0 ssl_prefer_server_ciphers = no ssl_protocols = !SSLv3 ssl_require_crl = yes ssl_verify_client_cert = no state_dir = /var/lib/dovecot stats_carbon_interval = 30 secs stats_carbon_name stats_carbon_server stats_command_min_time = 1 mins stats_domain_min_time = 12 hours stats_ip_min_time = 12 hours stats_memory_limit = 16 M stats_session_min_time = 15 mins stats_user_min_time = 1 hours submission_host syslog_facility = mail userdb { args = username_format=%n /data/vmail/global/users auth_verbose = default default_fields = home=/data/vmail/user/%n uid=vmail gid=vmail driver = passwd-file name override_fields result_failure = continue result_internalfail = continue result_success = return-ok skip = never } valid_chroot_dirs verbose_proctitle = no verbose_ssl = no version_ignore = no protocol lmtp { mail_plugins = " sieve" postmaster_address = postmaster at ... } protocol imap { mail_plugins = " acl imap_acl" }
Here's a few tips: 1. I assume that's a 2U format -24 bays.?You only have 1 raid card for all 24 disks ? Granted you only have 16, but usually you should assign 1 card per 8 drives. In our standard 2U chassis we have 3 hba's per 8 drives. Your backplane should support that. 2. Add more drives 3. Get a pci nvme ssd card and move the indexes/control/sieve files there.? On Monday, 07/09/2020 at 08:16 Miloslav H?la wrote: Dne 07.09.2020 v 12:43 Sami Ketola napsal(a):>> On 7. Sep 2020, at 12.38, Miloslav H?la wrote: >> >> Hello, >> >> I sent this into the Linux Kernel Btrfs mailing list and I gotreply: "RAID-1 would be preferable" (https://lore.kernel.org/linux-btrfs/7b364356-7041-7d18-bd77-f60e0e2e2112 at lechevalier.se/T/). May I ask you for the comments as from people around the Dovecot?>> >> >> We are using btrfs RAID-10 (/data, 4.7TB) on a physical Supermicroserver with Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz and 125GB of RAM. We run 'btrfs scrub start -B -d /data' every Sunday as a cron task. It takes about 50 minutes to finish.>> >> # uname -a >> Linux imap 4.9.0-12-amd64 #1 SMP Debian 4.9.210-1 (2020-01-20)x86_64 GNU/Linux>> >> RAID is a composition of 16 harddrives. Harddrives are connectedvia AVAGO MegaRAID SAS 9361-8i as a RAID-0 devices. All harddrives are SAS 2.5" 15k drives.>> >> Server serves as a IMAP with Dovecot 2.2.27-3+deb9u6, 4104accounts, Mailbox format, LMTP delivery.> > does "Mailbox format" mean mbox? > > If so, then there is your bottleneck. mbox is the slowest possiblemailbox format there is.> > SamiSorry, no, it is a typo. We are using "Maildir". "doveconf -a" attached Milo # 2.2.27 (c0f36b0): /etc/dovecot/dovecot.conf # Pigeonhole version 0.4.16 (fed8554) # OS: Linux 4.9.0-12-amd64 x86_64 Debian 9.13 # NOTE: Send doveconf -n output instead when asking for help. auth_anonymous_username = anonymous auth_cache_negative_ttl = 30 secs auth_cache_size = 100 M auth_cache_ttl = 30 secs auth_debug = no auth_debug_passwords = no auth_default_realm auth_failure_delay = 2 secs auth_gssapi_hostname auth_krb5_keytab auth_master_user_separator auth_mechanisms = plain auth_policy_hash_mech = sha256 auth_policy_hash_nonce auth_policy_hash_truncate = 12 auth_policy_reject_on_fail = no auth_policy_request_attributes = login=%{orig_username} pwhash=%{hashed_password} remote=%{real_rip} auth_policy_server_api_header auth_policy_server_timeout_msecs = 2000 auth_policy_server_url auth_proxy_self auth_realms auth_socket_path = auth-userdb auth_ssl_require_client_cert = no auth_ssl_username_from_cert = no auth_stats = no auth_use_winbind = no auth_username_chars = abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ01234567890.-_@ auth_username_format = %Lu auth_username_translation auth_verbose = no auth_verbose_passwords = no auth_winbind_helper_path = /usr/bin/ntlm_auth auth_worker_max_count = 30 base_dir = /var/run/dovecot config_cache_size = 1 M debug_log_path default_client_limit = 1000 default_idle_kill = 1 mins default_internal_user = dovecot default_login_user = dovenull default_process_limit = 100 default_vsz_limit = 256 M deliver_log_format = msgid=%m: %$ dict_db_config director_consistent_hashing = no director_doveadm_port = 0 director_flush_socket director_mail_servers director_servers director_user_expire = 15 mins director_user_kick_delay = 2 secs director_username_hash = %u disable_plaintext_auth = yes dotlock_use_excl = yes doveadm_allowed_commands doveadm_api_key doveadm_password doveadm_port = 0 doveadm_socket_path = doveadm-server doveadm_username = doveadm doveadm_worker_count = 0 dsync_alt_char = _ dsync_features dsync_remote_cmd = ssh -l%{login} %{host} doveadm dsync-server -u%u -U first_valid_gid = 1 first_valid_uid = 109 haproxy_timeout = 3 secs haproxy_trusted_networks hostname imap_capability imap_client_workarounds imap_hibernate_timeout = 0 imap_id_log = * imap_id_send = name * imap_idle_notify_interval = 2 mins imap_logout_format = in=%i out=%o imap_max_line_length = 64 k imap_metadata = no imap_urlauth_host imap_urlauth_logout_format = in=%i out=%o imap_urlauth_port = 143 imapc_cmd_timeout = 5 mins imapc_features imapc_host imapc_list_prefix imapc_master_user imapc_max_idle_time = 29 mins imapc_max_line_length = 0 imapc_password imapc_port = 143 imapc_rawlog_dir imapc_sasl_mechanisms imapc_ssl = no imapc_ssl_verify = yes imapc_user import_environment = TZ CORE_OUTOFMEM CORE_ERROR LISTEN_PID LISTEN_FDS info_log_path instance_name = dovecot last_valid_gid = 0 last_valid_uid = 0 lda_mailbox_autocreate = no lda_mailbox_autosubscribe = no lda_original_recipient_header libexec_dir = /usr/lib/dovecot listen = *, :: lmtp_address_translate lmtp_hdr_delivery_address = final lmtp_proxy = no lmtp_rcpt_check_quota = no lmtp_save_to_detail_mailbox = no lmtp_user_concurrency_limit = 0 lock_method = fcntl log_path = syslog log_timestamp = "%b %d %H:%M:%S " login_access_sockets login_greeting = Dovecot ready. login_log_format = %$: %s login_log_format_elements = user= method=%m rip=%r lip=%l mpid=%e %c sessionlogin_plugin_dir = /usr/lib/dovecot/modules/login login_plugins login_proxy_max_disconnect_delay = 0 login_source_ips login_trusted_networks mail_access_groups mail_always_cache_fields mail_attachment_dir mail_attachment_fs = sis posix mail_attachment_hash = %{sha1} mail_attachment_min_size = 128 k mail_attribute_dict mail_cache_fields = flags mail_cache_min_mail_count = 0 mail_chroot mail_debug = no mail_fsync = optimized mail_full_filesystem_access = no mail_gid = vmail mail_home = /data/vmail/user/%n mail_location = maildir:/data/vmail/user/%n/Maildir mail_log_prefix = "%s(%u): " mail_max_keyword_length = 50 mail_max_lock_timeout = 0 mail_max_userip_connections = 10 mail_never_cache_fields = imap.envelope mail_nfs_index = no mail_nfs_storage = no mail_plugin_dir = /usr/lib/dovecot/modules mail_plugins mail_prefetch_count = 0 mail_privileged_group mail_save_crlf = yes mail_server_admin mail_server_comment mail_shared_explicit_inbox = no mail_temp_dir = /tmp mail_temp_scan_interval = 1 weeks mail_uid = vmail mailbox_idle_check_interval = 30 secs mailbox_list_index = no mailbox_list_index_very_dirty_syncs = no maildir_broken_filename_sizes = no maildir_copy_with_hardlinks = yes maildir_empty_new = no maildir_stat_dirs = no maildir_very_dirty_syncs = no managesieve_client_workarounds managesieve_implementation_string = Dovecot Pigeonhole managesieve_logout_format = bytes=%i/%o managesieve_max_compile_errors = 5 managesieve_max_line_length = 65536 managesieve_notify_capability = mailto managesieve_sieve_capability = fileinto reject envelope encoded-character vacation subaddress comparator-i;ascii-numeric relational regex copy include variables body enotify environment mailbox date index ihave duplicate mime foreverypart extracttext vacation-seconds imapflags notify master_user_separator mbox_dirty_syncs = yes mbox_dotlock_change_timeout = 2 mins mbox_lazy_writes = yes mbox_lock_timeout = 5 mins mbox_md5 = apop3d mbox_min_index_size = 0 mbox_read_locks = fcntl mbox_very_dirty_syncs = no mbox_write_locks = fcntl dotlock mdbox_preallocate_space = no mdbox_purge_preserve_alt = no mdbox_rotate_interval = 0 mdbox_rotate_size = 2 M mmap_disable = no namespace { ?? disabled = no ?? hidden = no ?? ignore_on_failure = no ?? inbox = no ?? list = children ?? location = maildir:/data/vmail/user/%%n/Maildir:INDEXPVT=/data/vmail/user/%n/Maildir/Shared/%%n:SUBSCRIPTIONS=../../%n/Maildir/Shared/subscriptions-%%n ?? order = 0 ?? prefix = user.%%n. ?? separator = . ?? subscriptions = yes ?? type = shared } namespace inbox { ?? disabled = no ?? hidden = no ?? ignore_on_failure = no ?? inbox = yes ?? list = yes ?? location ?? mailbox Archives { ???? auto = no ???? autoexpunge = 0 ???? autoexpunge_max_mails = 0 ???? comment ???? driver ???? special_use = \Archive ?? } ?? mailbox Drafts { ???? auto = subscribe ???? autoexpunge = 0 ???? autoexpunge_max_mails = 0 ???? comment ???? driver ???? special_use = \Drafts ?? } ?? mailbox Junk { ???? auto = no ???? autoexpunge = 0 ???? autoexpunge_max_mails = 0 ???? comment ???? driver ???? special_use = \Junk ?? } ?? mailbox Sent { ???? auto = subscribe ???? autoexpunge = 0 ???? autoexpunge_max_mails = 0 ???? comment ???? driver ???? special_use = \Sent ?? } ?? mailbox "Sent Messages" { ???? auto = no ???? autoexpunge = 0 ???? autoexpunge_max_mails = 0 ???? comment ???? driver ???? special_use = \Sent ?? } ?? mailbox Trash { ???? auto = subscribe ???? autoexpunge = 0 ???? autoexpunge_max_mails = 0 ???? comment ???? driver ???? special_use = \Trash ?? } ?? mailbox spam { ???? auto = subscribe ???? autoexpunge = 0 ???? autoexpunge_max_mails = 0 ???? comment ???? driver ???? special_use = \Junk ?? } ?? order = 0 ?? prefix = INBOX. ?? separator = . ?? subscriptions = yes ?? type = private } passdb { ?? args = /etc/dovecot/deny-users ?? auth_verbose = default ?? default_fields ?? deny = yes ?? driver = passwd-file ?? master = no ?? name ?? override_fields ?? pass = no ?? result_failure = continue ?? result_internalfail = continue ?? result_success = return-ok ?? skip = never } passdb { ?? args = /etc/dovecot/dovecot-ldap.conf.ext ?? auth_verbose = default ?? default_fields ?? deny = no ?? driver = ldap ?? master = no ?? name ?? override_fields ?? pass = no ?? result_failure = continue ?? result_internalfail = continue ?? result_success = return-ok ?? skip = never } plugin { ?? acl = vfile ?? acl_shared_dict = file:/data/vmail/global/shared-mailboxes ?? sieve = file:/data/vmail/user/%n/sieve;active=/data/vmail/user/%n/enabled.sieve ?? sieve_extensions = +notify +imapflags -imap4flags +vacation-seconds ?? sieve_vacation_min_period = 0 } pop3_client_workarounds pop3_delete_type = default pop3_deleted_flag pop3_enable_last = no pop3_fast_size_lookups = no pop3_lock_session = no pop3_logout_format = top=%t/%p, retr=%r/%b, del=%d/%m, size=%s pop3_no_flag_updates = no pop3_reuse_xuidl = no pop3_save_uidl = no pop3_uidl_duplicates = allow pop3_uidl_format = %v.%u pop3c_host pop3c_master_user pop3c_password pop3c_port = 110 pop3c_quick_received_date = no pop3c_rawlog_dir pop3c_ssl = no pop3c_ssl_verify = yes pop3c_user = %u postmaster_address = postmaster@%d protocols = " imap lmtp sieve pop3" quota_full_tempfail = no rawlog_dir recipient_delimiter = + rejection_reason = Your message to was automatically rejected:%n%r rejection_subject = Rejected: %s replication_dsync_parameters = -d -N -l 30 -U replication_full_sync_interval = 1 days replication_max_conns = 10 replicator_host = replicator replicator_port = 0 sendmail_path = /usr/sbin/sendmail service aggregator { ?? chroot = . ?? client_limit = 0 ?? drop_priv_before_exec = no ?? executable = aggregator ?? extra_groups ?? fifo_listener replication-notify-fifo { ???? group ???? mode = 0600 ???? user ?? } ?? group ?? idle_kill = 0 ?? privileged_group ?? process_limit = 0 ?? process_min_avail = 0 ?? protocol ?? service_count = 0 ?? type ?? unix_listener replication-notify { ???? group ???? mode = 0600 ???? user ?? } ?? user = $default_internal_user ?? vsz_limit = 18446744073709551615 B } service anvil { ?? chroot = empty ?? client_limit = 0 ?? drop_priv_before_exec = no ?? executable = anvil ?? extra_groups ?? group ?? idle_kill = 4294967295 secs ?? privileged_group ?? process_limit = 1 ?? process_min_avail = 1 ?? protocol ?? service_count = 0 ?? type = anvil ?? unix_listener anvil-auth-penalty { ???? group ???? mode = 0600 ???? user ?? } ?? unix_listener anvil { ???? group ???? mode = 0600 ???? user ?? } ?? user = $default_internal_user ?? vsz_limit = 18446744073709551615 B } service auth-worker { ?? chroot ?? client_limit = 1 ?? drop_priv_before_exec = no ?? executable = auth -w ?? extra_groups ?? group ?? idle_kill = 0 ?? privileged_group ?? process_limit = 0 ?? process_min_avail = 0 ?? protocol ?? service_count = 1 ?? type ?? unix_listener auth-worker { ???? group ???? mode = 0600 ???? user = $default_internal_user ?? } ?? user ?? vsz_limit = 18446744073709551615 B } service auth { ?? chroot ?? client_limit = 0 ?? drop_priv_before_exec = no ?? executable = auth ?? extra_groups ?? group ?? idle_kill = 0 ?? privileged_group ?? process_limit = 1 ?? process_min_avail = 0 ?? protocol ?? service_count = 0 ?? type ?? unix_listener auth-client { ???? group ???? mode = 0600 ???? user = $default_internal_user ?? } ?? unix_listener auth-login { ???? group ???? mode = 0600 ???? user = $default_internal_user ?? } ?? unix_listener auth-master { ???? group ???? mode = 0600 ???? user ?? } ?? unix_listener auth-userdb { ???? group ???? mode = 0666 ???? user = $default_internal_user ?? } ?? unix_listener login/login { ???? group ???? mode = 0666 ???? user ?? } ?? unix_listener token-login/tokenlogin { ???? group ???? mode = 0666 ???? user ?? } ?? user = $default_internal_user ?? vsz_limit = 18446744073709551615 B } service config { ?? chroot ?? client_limit = 0 ?? drop_priv_before_exec = no ?? executable = config ?? extra_groups ?? group ?? idle_kill = 0 ?? privileged_group ?? process_limit = 0 ?? process_min_avail = 0 ?? protocol ?? service_count = 0 ?? type = config ?? unix_listener config { ???? group ???? mode = 0600 ???? user ?? } ?? user ?? vsz_limit = 18446744073709551615 B } service dict-async { ?? chroot ?? client_limit = 0 ?? drop_priv_before_exec = no ?? executable = dict ?? extra_groups ?? group ?? idle_kill = 0 ?? privileged_group ?? process_limit = 0 ?? process_min_avail = 0 ?? protocol ?? service_count = 0 ?? type ?? unix_listener dict-async { ???? group ???? mode = 0600 ???? user ?? } ?? user = $default_internal_user ?? vsz_limit = 18446744073709551615 B } service dict { ?? chroot ?? client_limit = 1 ?? drop_priv_before_exec = no ?? executable = dict ?? extra_groups ?? group ?? idle_kill = 0 ?? privileged_group ?? process_limit = 0 ?? process_min_avail = 0 ?? protocol ?? service_count = 0 ?? type ?? unix_listener dict { ???? group ???? mode = 0600 ???? user ?? } ?? user = $default_internal_user ?? vsz_limit = 18446744073709551615 B } service director { ?? chroot = . ?? client_limit = 0 ?? drop_priv_before_exec = no ?? executable = director ?? extra_groups ?? fifo_listener login/proxy-notify { ???? group ???? mode = 00 ???? user ?? } ?? group ?? idle_kill = 4294967295 secs ?? inet_listener { ???? address ???? haproxy = no ???? port = 0 ???? reuse_port = no ???? ssl = no ?? } ?? privileged_group ?? process_limit = 1 ?? process_min_avail = 0 ?? protocol ?? service_count = 0 ?? type ?? unix_listener director-admin { ???? group ???? mode = 0600 ???? user ?? } ?? unix_listener director-userdb { ???? group ???? mode = 0600 ???? user ?? } ?? unix_listener login/director { ???? group ???? mode = 00 ???? user ?? } ?? user = $default_internal_user ?? vsz_limit = 18446744073709551615 B } service dns_client { ?? chroot ?? client_limit = 1 ?? drop_priv_before_exec = no ?? executable = dns-client ?? extra_groups ?? group ?? idle_kill = 0 ?? privileged_group ?? process_limit = 0 ?? process_min_avail = 0 ?? protocol ?? service_count = 0 ?? type ?? unix_listener dns-client { ???? group ???? mode = 0666 ???? user ?? } ?? user = $default_internal_user ?? vsz_limit = 18446744073709551615 B } service doveadm { ?? chroot ?? client_limit = 1 ?? drop_priv_before_exec = no ?? executable = doveadm-server ?? extra_groups ?? group ?? idle_kill = 0 ?? privileged_group ?? process_limit = 0 ?? process_min_avail = 0 ?? protocol ?? service_count = 1 ?? type ?? unix_listener doveadm-server { ???? group ???? mode = 0600 ???? user ?? } ?? user ?? vsz_limit = 18446744073709551615 B } service imap-hibernate { ?? chroot ?? client_limit = 0 ?? drop_priv_before_exec = no ?? executable = imap-hibernate ?? extra_groups ?? group ?? idle_kill = 0 ?? privileged_group ?? process_limit = 0 ?? process_min_avail = 0 ?? protocol = imap ?? service_count = 0 ?? type ?? unix_listener imap-hibernate { ???? group ???? mode = 0600 ???? user ?? } ?? user = $default_internal_user ?? vsz_limit = 18446744073709551615 B } service imap-login { ?? chroot = login ?? client_limit = 0 ?? drop_priv_before_exec = no ?? executable = imap-login ?? extra_groups ?? group ?? idle_kill = 0 ?? inet_listener imap { ???? address ???? haproxy = no ???? port = 143 ???? reuse_port = no ???? ssl = no ?? } ?? inet_listener imaps { ???? address ???? haproxy = no ???? port = 993 ???? reuse_port = no ???? ssl = yes ?? } ?? privileged_group ?? process_limit = 0 ?? process_min_avail = 10 ?? protocol = imap ?? service_count = 0 ?? type = login ?? user = $default_login_user ?? vsz_limit = 18446744073709551615 B } service imap-urlauth-login { ?? chroot = token-login ?? client_limit = 0 ?? drop_priv_before_exec = no ?? executable = imap-urlauth-login ?? extra_groups ?? group ?? idle_kill = 0 ?? privileged_group ?? process_limit = 0 ?? process_min_avail = 0 ?? protocol = imap ?? service_count = 1 ?? type = login ?? unix_listener imap-urlauth { ???? group ???? mode = 0666 ???? user ?? } ?? user = $default_login_user ?? vsz_limit = 18446744073709551615 B } service imap-urlauth-worker { ?? chroot ?? client_limit = 1 ?? drop_priv_before_exec = no ?? executable = imap-urlauth-worker ?? extra_groups ?? group ?? idle_kill = 0 ?? privileged_group ?? process_limit = 1024 ?? process_min_avail = 0 ?? protocol = imap ?? service_count = 1 ?? type ?? unix_listener imap-urlauth-worker { ???? group ???? mode = 0600 ???? user = $default_internal_user ?? } ?? user ?? vsz_limit = 18446744073709551615 B } service imap-urlauth { ?? chroot ?? client_limit = 1 ?? drop_priv_before_exec = no ?? executable = imap-urlauth ?? extra_groups ?? group ?? idle_kill = 0 ?? privileged_group ?? process_limit = 1024 ?? process_min_avail = 0 ?? protocol = imap ?? service_count = 1 ?? type ?? unix_listener token-login/imap-urlauth { ???? group ???? mode = 0666 ???? user ?? } ?? user = $default_internal_user ?? vsz_limit = 18446744073709551615 B } service imap { ?? chroot ?? client_limit = 1 ?? drop_priv_before_exec = no ?? executable = imap ?? extra_groups ?? group ?? idle_kill = 0 ?? privileged_group ?? process_limit = 2048 ?? process_min_avail = 0 ?? protocol = imap ?? service_count = 1 ?? type ?? unix_listener imap-master { ???? group ???? mode = 0600 ???? user ?? } ?? unix_listener login/imap { ???? group ???? mode = 0666 ???? user ?? } ?? user ?? vsz_limit = 18446744073709551615 B } service indexer-worker { ?? chroot ?? client_limit = 1 ?? drop_priv_before_exec = no ?? executable = indexer-worker ?? extra_groups ?? group ?? idle_kill = 0 ?? privileged_group ?? process_limit = 10 ?? process_min_avail = 0 ?? protocol ?? service_count = 0 ?? type ?? unix_listener indexer-worker { ???? group ???? mode = 0600 ???? user = $default_internal_user ?? } ?? user ?? vsz_limit = 18446744073709551615 B } service indexer { ?? chroot ?? client_limit = 0 ?? drop_priv_before_exec = no ?? executable = indexer ?? extra_groups ?? group ?? idle_kill = 0 ?? privileged_group ?? process_limit = 1 ?? process_min_avail = 0 ?? protocol ?? service_count = 0 ?? type ?? unix_listener indexer { ???? group ???? mode = 0666 ???? user ?? } ?? user = $default_internal_user ?? vsz_limit = 18446744073709551615 B } service ipc { ?? chroot = empty ?? client_limit = 0 ?? drop_priv_before_exec = no ?? executable = ipc ?? extra_groups ?? group ?? idle_kill = 0 ?? privileged_group ?? process_limit = 1 ?? process_min_avail = 0 ?? protocol ?? service_count = 0 ?? type ?? unix_listener ipc { ???? group ???? mode = 0600 ???? user ?? } ?? unix_listener login/ipc-proxy { ???? group ???? mode = 0600 ???? user = $default_login_user ?? } ?? user = $default_internal_user ?? vsz_limit = 18446744073709551615 B } service lmtp { ?? chroot ?? client_limit = 1 ?? drop_priv_before_exec = no ?? executable = lmtp ?? extra_groups ?? group ?? idle_kill = 0 ?? privileged_group ?? process_limit = 120 ?? process_min_avail = 15 ?? protocol = lmtp ?? service_count = 0 ?? type ?? unix_listener /var/spool/postfix/private/dovecot-lmtp { ???? group = postfix ???? mode = 0600 ???? user = postfix ?? } ?? unix_listener lmtp { ???? group ???? mode = 0666 ???? user ?? } ?? user = vmail ?? vsz_limit = 18446744073709551615 B } service log { ?? chroot ?? client_limit = 0 ?? drop_priv_before_exec = no ?? executable = log ?? extra_groups ?? group ?? idle_kill = 4294967295 secs ?? privileged_group ?? process_limit = 1 ?? process_min_avail = 0 ?? protocol ?? service_count = 0 ?? type = log ?? unix_listener log-errors { ???? group ???? mode = 0600 ???? user ?? } ?? user ?? vsz_limit = 18446744073709551615 B } service managesieve-login { ?? chroot = login ?? client_limit = 0 ?? drop_priv_before_exec = no ?? executable = managesieve-login ?? extra_groups ?? group ?? idle_kill = 0 ?? inet_listener sieve { ???? address = 127.0.0.1 ???? haproxy = no ???? port = 4190 ???? reuse_port = no ???? ssl = no ?? } ?? privileged_group ?? process_limit = 0 ?? process_min_avail = 0 ?? protocol = sieve ?? service_count = 1 ?? type = login ?? user = $default_login_user ?? vsz_limit = 18446744073709551615 B } service managesieve { ?? chroot ?? client_limit = 1 ?? drop_priv_before_exec = no ?? executable = managesieve ?? extra_groups ?? group ?? idle_kill = 0 ?? privileged_group ?? process_limit = 0 ?? process_min_avail = 0 ?? protocol = sieve ?? service_count = 1 ?? type ?? unix_listener login/sieve { ???? group ???? mode = 0666 ???? user ?? } ?? user ?? vsz_limit = 18446744073709551615 B } service pop3-login { ?? chroot = login ?? client_limit = 0 ?? drop_priv_before_exec = no ?? executable = pop3-login ?? extra_groups ?? group ?? idle_kill = 0 ?? inet_listener pop3 { ???? address ???? haproxy = no ???? port = 110 ???? reuse_port = no ???? ssl = no ?? } ?? inet_listener pop3s { ???? address ???? haproxy = no ???? port = 995 ???? reuse_port = no ???? ssl = yes ?? } ?? privileged_group ?? process_limit = 0 ?? process_min_avail = 0 ?? protocol = pop3 ?? service_count = 1 ?? type = login ?? user = $default_login_user ?? vsz_limit = 18446744073709551615 B } service pop3 { ?? chroot ?? client_limit = 1 ?? drop_priv_before_exec = no ?? executable = pop3 ?? extra_groups ?? group ?? idle_kill = 0 ?? privileged_group ?? process_limit = 1024 ?? process_min_avail = 0 ?? protocol = pop3 ?? service_count = 1 ?? type ?? unix_listener login/pop3 { ???? group ???? mode = 0666 ???? user ?? } ?? user ?? vsz_limit = 18446744073709551615 B } service replicator { ?? chroot ?? client_limit = 0 ?? drop_priv_before_exec = no ?? executable = replicator ?? extra_groups ?? group ?? idle_kill = 4294967295 secs ?? privileged_group ?? process_limit = 1 ?? process_min_avail = 0 ?? protocol ?? service_count = 0 ?? type ?? unix_listener replicator-doveadm { ???? group ???? mode = 00 ???? user = $default_internal_user ?? } ?? unix_listener replicator { ???? group ???? mode = 0600 ???? user = $default_internal_user ?? } ?? user ?? vsz_limit = 18446744073709551615 B } service ssl-params { ?? chroot ?? client_limit = 0 ?? drop_priv_before_exec = no ?? executable = ssl-params ?? extra_groups ?? group ?? idle_kill = 0 ?? privileged_group ?? process_limit = 0 ?? process_min_avail = 0 ?? protocol ?? service_count = 0 ?? type = startup ?? unix_listener login/ssl-params { ???? group ???? mode = 0666 ???? user ?? } ?? unix_listener ssl-params { ???? group ???? mode = 0666 ???? user ?? } ?? user ?? vsz_limit = 18446744073709551615 B } service stats { ?? chroot = empty ?? client_limit = 0 ?? drop_priv_before_exec = no ?? executable = stats ?? extra_groups ?? fifo_listener stats-mail { ???? group ???? mode = 0600 ???? user ?? } ?? fifo_listener stats-user { ???? group ???? mode = 0600 ???? user ?? } ?? group ?? idle_kill = 4294967295 secs ?? privileged_group ?? process_limit = 1 ?? process_min_avail = 0 ?? protocol ?? service_count = 0 ?? type ?? unix_listener stats { ???? group ???? mode = 0600 ???? user ?? } ?? user = $default_internal_user ?? vsz_limit = 18446744073709551615 B } service tcpwrap { ?? chroot ?? client_limit = 1 ?? drop_priv_before_exec = no ?? executable = tcpwrap ?? extra_groups ?? group ?? idle_kill = 0 ?? privileged_group ?? process_limit = 0 ?? process_min_avail = 0 ?? protocol ?? service_count = 0 ?? type ?? user = $default_internal_user ?? vsz_limit = 18446744073709551615 B } shutdown_clients = yes ssl = required ssl_ca ssl_cert -------------- next part -------------- An HTML attachment was scrubbed... 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Thanks for the tips! Dne 07.09.2020 v 15:24 Scott Q. napsal(a):> 1. I assume that's a 2U format -24 bays.?You only have 1 raid card for > all 24 disks ? Granted you only have 16, but usually you should assign 1 > card per 8 drives. In our standard 2U chassis we have 3 hba's per 8 > drives. Your backplane should support that.Exactly. And what's the reason/bottleneck? PCIe or card throughput?> 2. Add more drivesWe can add 2 next drives, and we actually did yesterday, but we keep free slots to be able replace drives by double-capacity ones.> 3. Get a pci nvme ssd card and move the indexes/control/sieve files there.It complicates current backup and restore a little bit, but I'll probably try that. Thank you, Milo> On Monday, 07/09/2020 at 08:16 Miloslav H?la wrote: > > Dne 07.09.2020 v 12:43 Sami Ketola napsal(a): > >> On 7. Sep 2020, at 12.38, Miloslav H?la <miloslav.hula at gmail.com > <mailto:miloslav.hula at gmail.com>> wrote: > >> > >> Hello, > >> > >> I sent this into the Linux Kernel Btrfs mailing list and I got > reply: "RAID-1 would be preferable" > (https://lore.kernel.org/linux-btrfs/7b364356-7041-7d18-bd77-f60e0e2e2112 at lechevalier.se/T/). > May I ask you for the comments as from people around the Dovecot? > >> > >> > >> We are using btrfs RAID-10 (/data, 4.7TB) on a physical > Supermicro server with Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz and > 125GB of RAM. We run 'btrfs scrub start -B -d /data' every Sunday as > a cron task. It takes about 50 minutes to finish. > >> > >> # uname -a > >> Linux imap 4.9.0-12-amd64 #1 SMP Debian 4.9.210-1 (2020-01-20) > x86_64 GNU/Linux > >> > >> RAID is a composition of 16 harddrives. Harddrives are connected > via AVAGO MegaRAID SAS 9361-8i as a RAID-0 devices. All harddrives > are SAS 2.5" 15k drives. > >> > >> Server serves as a IMAP with Dovecot 2.2.27-3+deb9u6, 4104 > accounts, Mailbox format, LMTP delivery. > > > > does "Mailbox format" mean mbox? > > > > If so, then there is your bottleneck. mbox is the slowest > possible mailbox format there is. > > > > Sami > > Sorry, no, it is a typo. We are using "Maildir". > > "doveconf -a" attached > > Milo