A NOTE has been added to this issue. ====================================================================== http://www.dbmail.org/mantis/view.php?id=957 ====================================================================== Reported By: gcth Assigned To: paul ====================================================================== Project: DBMail Issue ID: 957 Category: IMAP daemon Reproducibility: always Severity: major Priority: normal Status: confirmed target: ====================================================================== Date Submitted: 27-Jan-12 11:07 CET Last Modified: 10-Jan-13 08:46 CET ====================================================================== Summary: imapd leaks sockets Description: I'm currently using latest git dbmail with imap only, and I've noticed that it refuses connections after few hours of working. lsof shows lots of open sockets:
dbmail-im 24466 dbmail 1352u sock 0,6 0t0 1917799 can't identify protocol dbmail-im 24466 dbmail 1353u sock 0,6 0t0 1917800 can't identify protocol dbmail-im 24466 dbmail 1354u sock 0,6 0t0 1917801 can't identify protocol dbmail-im 24466 dbmail 1355u sock 0,6 0t0 1917802 can't identify protocol dbmail-im 24466 dbmail 1356u sock 0,6 0t0 1917803 can't identify protocol dbmail-im 24466 dbmail 1357u sock 0,6 0t0 1917804 can't identify protocol dbmail-im 24466 dbmail 1358u sock 0,6 0t0 1917805 can't identify protocol they are increasing in time leading to saturation of nofiles ulimit. This problem applies to imapd, I could not reproduce this problem with pop3. Typical clients connects with latest thundderbird, mostly from local LAN. Increasing ulimit -n to 8192 allows enough leaks to last for whole day, so now as a workaround I restart dbmail every night. I'm attaching munin graph for: lsof -ln -u dbmail | grep ^dbmail-im | fgrep sock\ -c during normal work hours. ====================================================================== ---------------------------------------------------------------------- (0003392) paul (administrator) - 27-Jan-12 16:35 http://www.dbmail.org/mantis/view.php?id=957#c3392 ---------------------------------------------------------------------- I can confirm this. Looks like there is a thread-race in the imap code. ---------------------------------------------------------------------- (0003429) gcth (reporter) - 03-Apr-12 17:07 http://www.dbmail.org/mantis/view.php?id=957#c3429 ---------------------------------------------------------------------- In current master this bug is still present. Any chances for a fix? What else do you need to debug this? ---------------------------------------------------------------------- (0003449) vampyre (reporter) - 15-May-12 19:46 http://www.dbmail.org/mantis/view.php?id=957#c3449 ---------------------------------------------------------------------- Hello Paul, Could you please share your assumptions if you have some, as this is quite major issue and it is important to get it fixed as fast as possible. Thank you. ---------------------------------------------------------------------- (0003456) JensKapitza (reporter) - 06-Jun-12 17:32 http://www.dbmail.org/mantis/view.php?id=957#c3456 ---------------------------------------------------------------------- Can be produced with going offline in thunderbird seems to be a problem in gooing offine (closing thunderbird) works ---------------------------------------------------------------------- (0003505) nickdb161 (reporter) - 02-Nov-12 14:48 http://www.dbmail.org/mantis/view.php?id=957#c3505 ---------------------------------------------------------------------- I am using Postfix/Dovecot proxy/DBMail and get this problem of running out of file descriptors (although the sockets seem to close correctly - none remaining in netstat?). I have enclosed extracts of the debugging output which indicates where the problem might be occurring: dbmail/imap4d[18505]: [0x822fc0] Notice:[imap] _ic_logout(+179): [0x883220] userid:[0] dbmail/imap4d[18505]: [0x822fc0] Debug:[imap] imap_handle_input(+396): imap4 returned [2] dbmail/imap4d[18505]: [0x822fc0] Debug:[imap] imap_handle_exit(+262): [0x883220] state [4] command_status [0] [LOGOUT] returned with status [2] dbmail/imap4d[18505]: [0x822fc0] Info:[clientbase] ci_write(+312): [0x9a9020] S > [7/7:* BYE#015#012] dbmail/imap4d[18505]: [0x822fc0] Debug:[clientbase] client_error_cb(+134): [0x9a9020] 18 Broken pipe[32], 0x9a9020 dbmail/imap4d[18505]: [0x822fc0] Debug:[imap] imap_session_printf(+201): ci_write failed [Unknown error 18446744073709551615] dbmail/imap4d[18505]: [0x822fc0] Debug:[imap] dbmail_imap_session_set_state(+1562): state [6] dbmail/imap4d[18505]: [0x822fc0] Debug:[imap] dbmail_imap_session_set_state(+1591): [0x883220] state [4]->[6] I am having to restart dbmail-imapd at least once per day to avoid this. I do not want to increase the file descriptors. Hope this is of some use. ---------------------------------------------------------------------- (0003508) vampyre (reporter) - 07-Dec-12 09:58 http://www.dbmail.org/mantis/view.php?id=957#c3508 ---------------------------------------------------------------------- Hello Paul, It looks like a lot of work has been done to improve the situation, could you please announce expected delivery date of some release candidate. Thank you. ---------------------------------------------------------------------- (0003512) vampyre (reporter) - 10-Jan-13 08:46 http://www.dbmail.org/mantis/view.php?id=957#c3512 ---------------------------------------------------------------------- Hello Paul, Is there any new information regarding "delivery date"? Looking forward to to hearing from you. Issue History Date Modified Username Field Change ====================================================================== 27-Jan-12 11:07 gcth New Issue 27-Jan-12 11:07 gcth File Added: sockets.png 27-Jan-12 16:35 paul Note Added: 0003392 27-Jan-12 16:35 paul Assigned To => paul 27-Jan-12 16:35 paul Status new => confirmed 03-Apr-12 17:07 gcth Note Added: 0003429 15-May-12 19:46 vampyre Note Added: 0003449 06-Jun-12 17:32 JensKapitza Note Added: 0003456 02-Nov-12 14:48 nickdb161 Note Added: 0003505 07-Dec-12 09:58 vampyre Note Added: 0003508 10-Jan-13 08:46 vampyre Note Added: 0003512 ====================================================================== _______________________________________________ Dbmail-dev mailing list Dbmail-dev@dbmail.org http://mailman.fastxs.nl/cgi-bin/mailman/listinfo/dbmail-dev
