Hello!
Dovecot version: 2.3.16 (7e2e900c1a)
dovecon -n
deliver_log_format = from=%{from}, envelope_sender=%{from_envelope},
subject=%{subject}, msgid=%m, size=%{size}, delivery_time=%{delivery_time}ms, %$ dict { acl = mysql:/etc/dovecot/dovecot-share-folder.conf lastlogin = mysql:/etc/dovecot/dovecot-last-login.conf quotadict = mysql:/etc/dovecot/dovecot-used-quota.conf } first_valid_uid = 2000 last_valid_uid = 2000 listen = * [::] lock_method = dotlock login_log_format_elements = user=<%u> method=%m rip=%r lip=%l mpid=%e %c %k session=<%{session}> mail_gid = 2000 mail_location = maildir:%Lh/Maildir/:INDEX=%Lh/Maildir/ mail_plugins = quota mailbox_alias acl mail_log notify mail_uid = 2000 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 index ihave duplicate mime foreverypart extracttext namespace { inbox = yes location = mailbox Archive { auto = no special_use = \Archive } mailbox Archives { auto = no special_use = \Archive } mailbox "Deleted Messages" { auto = no special_use = \Trash } mailbox Drafts { auto = subscribe special_use = \Drafts } mailbox Junk { auto = subscribe special_use = \Junk } mailbox "Junk E-mail" { auto = no special_use = \Junk } mailbox Sent { auto = subscribe special_use = \Sent } mailbox "Sent Items" { auto = no special_use = \Sent } mailbox "Sent Messages" { auto = no special_use = \Sent } mailbox Spam { auto = no special_use = \Junk } mailbox Trash { auto = subscribe special_use = \Trash } prefix = separator = / type = private } namespace { list = children location = maildir:%%Lh/Maildir/:INDEX=%%Lh/Maildir/Shared/%%Ld/%%Ln prefix = Shared/%%u/ separator = / subscriptions = yes type = shared } passdb { args = /etc/dovecot/dovecot-mysql.conf driver = sql } passdb { args = /etc/dovecot/dovecot-master-users driver = passwd-file master = yes } plugin { acl = vfile acl_shared_dict = proxy::acl last_login_dict = proxy::lastlogin last_login_key = # hidden, use -P to show it mail_log_events = delete undelete expunge copy mailbox_create mailbox_delete mailbox_rename mail_log_fields = uid box msgid size from subject flags mailbox_alias_new = Sent Messages mailbox_alias_new2 = Sent Items mailbox_alias_old = Sent mailbox_alias_old2 = Sent quota = dict:user::proxy::quotadict quota_grace = 10%% quota_status_nouser = DUNNO quota_status_overquota = 552 5.2.2 Mailbox is full quota_status_success = DUNNO quota_warning = storage=100%% quota-warning 100 %u quota_warning2 = storage=95%% quota-warning 95 %u quota_warning3 = storage=90%% quota-warning 90 %u quota_warning4 = storage=85%% quota-warning 85 %u sieve = ~/sieve/dovecot.sieve sieve_before = /var/vmail/sieve/dovecot.sieve sieve_dir = ~/sieve sieve_global_dir = /var/vmail/sieve sieve_max_redirects = 30 sieve_vacation_send_from_recipient = yes } protocols = pop3 imap sieve lmtp service auth { unix_listener /var/spool/postfix/private/dovecot-auth { group = postfix mode = 0666 user = postfix } unix_listener auth-master { group = vmail mode = 0666 user = vmail } unix_listener auth-userdb { group = vmail mode = 0660 user = vmail } } service decode2text { executable = script /usr/libexec/dovecot/decode2text.sh unix_listener decode2text { mode = 0666 } user = dovecot } service dict { unix_listener dict { group = vmail mode = 0660 user = vmail } } service imap-login { process_limit = 500 service_count = 1 } service indexer-worker { process_limit = 0 vsz_limit = 2 G } service lmtp { executable = lmtp -L inet_listener lmtp { address = 127.0.0.1 port = 24 } process_min_avail = 5 unix_listener /var/spool/postfix/private/dovecot-lmtp { group = postfix mode = 0600 user = postfix } user = vmail } service managesieve-login { inet_listener sieve { address = 127.0.0.1 port = 4190 } } service pop3-login { service_count = 1 } service quota-status { client_limit = 1 executable = quota-status -p postfix inet_listener { address = 127.0.0.1 port = 12340 } } service quota-warning { executable = script /usr/local/bin/dovecot-quota-warning.sh unix_listener quota-warning { group = vmail mode = 0660 user = vmail } } service stats { fifo_listener stats-mail { group = vmail mode = 0664 user = vmail } inet_listener { address = 127.0.0.1 port = 24242 } unix_listener stats-writer { group = vmail mode = 0660 user = vmail } } ssl = required ssl_cert = </etc/pki/tls/certs/iRedMail.crt ssl_cipher_list = EECDH+CHACHA20:EECDH+AESGCM:EDH+AESGCM:AES256+EECDH ssl_dh = # hidden, use -P to show it ssl_key = # hidden, use -P to show it ssl_prefer_server_ciphers = yes syslog_facility = local5 userdb { args = /etc/dovecot/dovecot-mysql.conf driver = sql } protocol lda { lda_mailbox_autocreate = yes lda_mailbox_autosubscribe = yes mail_plugins = quota mailbox_alias acl mail_log notify sieve last_login } protocol lmtp { lmtp_save_to_detail_mailbox = yes mail_plugins = quota mailbox_alias acl mail_log notify sieve last_login recipient_delimiter = + } protocol imap { imap_client_workarounds = tb-extra-mailbox-sep mail_max_userip_connections = 30 mail_plugins = quota mailbox_alias acl mail_log notify imap_quota imap_acl last_login } protocol pop3 { mail_max_userip_connections = 30 mail_plugins = quota mailbox_alias acl mail_log notify last_login pop3_client_workarounds = outlook-no-nuls oe-ns-eoh pop3_uidl_format = %08Xu%08Xv }
We are using virtiofs share mounted to /var/vmail When dovecot tries to make a directory structure, it fails with error - fchown: Invalid argument
strace doveadm mailbox create -u testuser@testdomain.com Trash ... mkdir("/var/vmail/vmail1/ testdomain.com/t/e/s/testuser-2024.11.25.12.58.50//Maildir/.Trash", 0700) = 0 umask(077) = 000 openat(AT_FDCWD, "/var/vmail/vmail1/ testdomain.com/t/e/s/testuser-2024.11.25.12.58.50//Maildir/.Trash", O_RDONLY) = 11 fchown(11, -1, -1) = -1 EINVAL (Invalid argument) close(11) = 0 rmdir("/var/vmail/vmail1/ testdomain.com/t/e/s/testuser-2024.11.25.12.58.50//Maildir/.Trash") = 0 ... So there is no permission issue, directory successfully created. It seems that virtiofs not allowing uid=-1 and gid=-1
I write a small C program for testing. And when using fchown($FileDescriptor, 2000, 2000) there is no error.
I can't find a way to tell dovecot to use uid & gid 2000 when he tries to do fchown.
If I create a directory structure manually, everything works well.
Maybe we can make some parameter in config, telling that we are using virtiofs and skip EINVAL when doing fchown...