Dag-Erling Smørgrav wrote: > Cyrus IMAP 3.8.6, Cyrus SASL 2.1.28, LMDB 0.9.35 on FreeBSD 14.4. > > I'm using auxprop, not saslauthd. I recently switched my sasldb from > BDB to LMDB. Since then, every couple of days the IMAP server stops > authenticating clients until I restart it. Each attempt to connect > results in the following log messages on the server: > > imaps[85496]: SASL unable to open MDB transaction: MDB_READERS_FULL: > Environment maxreaders limit reached > imaps[85496]: badlogin: redacted [redacted] plaintext (des) [SASL(-1): > generic failure: checkpass failed] > > The database has 128 registered readers, which I assume is the limit:
That implies that LMDB isn't being closed properly, which is done by sasldb_auxprop_free(). > # mdb_stat -rn /usr/local/etc/sasldb2 | wc -l > 128 > > However, there are only three active imaps processes: > > # fstat /usr/local/etc/sasldb2* > USER CMD PID FD MOUNT INUM MODE SZ|DV R/W NAME > cyrus imapd 79119 10 / 132265 -rw-r----- 32768 r > /usr/local/etc/sasldb2 > cyrus imapd 79119 11 / 131427 -rw-r----- 8192 rw > /usr/local/etc/sasldb2-lock > cyrus imapd 79186 10 / 132265 -rw-r----- 32768 r > /usr/local/etc/sasldb2 > cyrus imapd 79186 11 / 131427 -rw-r----- 8192 rw > /usr/local/etc/sasldb2-lock > cyrus imapd 79200 10 / 132265 -rw-r----- 32768 r > /usr/local/etc/sasldb2 > cyrus imapd 79200 11 / 131427 -rw-r----- 8192 rw > /usr/local/etc/sasldb2-lock > # ps -xU cyrus > PID TT STAT TIME COMMAND > 56124 - SsJ 0:01.48 /usr/local/cyrus/libexec/master -d > 56127 - SJ 0:02.07 idled > 56129 - IJ 0:00.01 notifyd > 79119 - IJ 0:00.43 imapd: imaps: [redacted] des re.dac.ted Idle > (imapd) > 79186 - IJ 0:24.63 imapd: imaps: redacted [redacted] des re.dac.ted > (imapd) > 79200 - IJ 0:00.37 imapd: imaps: redacted [redacted] des re.dac.ted > Idle (imapd) > 85835 - SJ 0:00.02 lmtpd > > All the readers match past or present imaps processes. There is no sign > in the logs to suggest that any of them met an abnormal fate. > > Restarting imapd immediately clears up the issue: > > # service imapd restart > Stopping cyrus_imapd. > Waiting for PIDS: 56124. > Starting cyrus_imapd. > # mdb_stat -rn /usr/local/etc/sasldb2 | wc -l > 2 > > DES > -- -- Howard Chu CTO, Symas Corp. http://www.symas.com Director, Highland Sun http://highlandsun.com/hyc/ Chief Architect, OpenLDAP http://www.openldap.org/project/ ------------------------------------------ Cyrus: Info Permalink: https://cyrus.topicbox.com/groups/info/Ta8a8ec710afb50b8-Ma90be3c2e00ac7a35bedbbe6 Delivery options: https://cyrus.topicbox.com/groups/info/subscription
