Timo, On Wed, Mar 13, 2019, at 9:36 AM, Kostya Vasilyev wrote: > Timo, > > On Wed, Mar 13, 2019, at 12:39 AM, Timo Sirainen wrote: >> On 12 Mar 2019, at 10.21, Kostya Vasilyev via dovecot <dovecot@dovecot.org> >> wrote: >>> >>> It makes no difference if the IDLE connection does SELECT or SELECT >>> (CONDSTORE) prior to going IDLE. >>> >>> But then as far as I know (?) - in Dovecot, once any connection uses >>> CONDSTORE ever, even once, Dovecot creates data structures to track MODSEQ >>> values, and those data structures are forever. >> So are you saying that you can reproduce if you do for a completely new user: >> >> doveadm exec imap -u testuser1 >> a select inbox >> b idle >> >> And then run: >> echo foo | doveadm save -u testuser1 >> doveadm flags add -u testuser1 '\Seen' mailbox inbox 1 >> >> And the EXISTS shows up immediately after saving, but the flag change won't >> show up? It works fine with me. >> >> Do you see any errors in "doveadm log errors"? Can you reproduce this if you >> try with some other mailbox format than mbox? >> > > 1 - Yes I was able to reproduce with a completely new user. > > I didn't use your doveadm commands above, but created a new Linux user in > group mail, set a password in /etc/dovecot/users, and sent a few emails to > that user from another mail account / web mail. My SMTP server is Postfix. > > Then I used my IDLE client code (which does SELECT CONDSTORE) and a separate > netcat connection to make flags changes. > > Same thing as before: 1) no flags changes flushed to IDLE 2) until the other > connection (which changed flags) does a SELECT. > > The only difference from before - it was enough for netcat to do plain SELECT > (i.e. SELECT CONDSTORE was not necessary). > > I also tried a netcat connection instead of "my IDLE client" and did plain > SELECT before going IDLE (i.e. SELECT without CONDSTORE). Same thing: 1) > delay 2) flags changes are flushed after the other connection does SELECT. > > 2 - I switched to Maildir last night - and the problem stopped for same old > existing user. > > So it looks triggered by a combination of mbox + SELECT (CONDSTORE)? > > 3 - No errors in doveadm log errors > > 4 - /var/log/mail.err has this > > Mar 13 09:21:17 kman dovecot: auth: Error: Master requested auth for > nonexistent client 29548 (created 0 msecs ago, handshake 0 msecs ago) > Mar 13 09:21:18 kman dovecot: imap-login: Error: > net_connect_unix(/var/run/dovecot/stats-writer) failed: No such file or > directory > > Probably means nothing - I tried to log in with IMAP before remembering to > add my new user to /etc/dovecot/users > > -- K >
One more test with this new "test" user. I'd stopped postfix and dovecot, deleted this user's mail in /var/mail/%u and ~%u/mail and started over. Still mbox format. This time I used netcat for the IDLE connection, plain SELECT without CONDSTORE. Flags changes were sent quickly. Then on the IDLE connection I sent DONE and SELECT Inbox (CONDSTORE) - without logging out or closing the connection. The issue started again. I also learned that it's enough for the "other" (non-idle, flag changing) connection to do just "tag SELECT" - i.e. without mailbox name - which results in * OK [CLOSED] Previous mailbox closed. tag BAD Error in IMAP command SELECT: Invalid arguments (0.001 + 0.000 secs). but also does send the buffered up FLAGS changes on the IDLE connection. Hope these are useful data points. -- K