Peculiarity with the TLS session cache database

[Gary Mills]

I notice that the TLS cache database is not being updated:

  # ll -t *.db
  -rw-------   1 cyrus    mail     73179136 Oct 30 16:37 deliver.db
  -rw-------   1 cyrus    mail     12786596 Oct 30 16:36 mailboxes.db
  -rw-------   1 cyrus    mail     1515520 Sep 27 04:00 tls_sessions.db

It is being read:

  # ll -tu *.db
  -rw-------   1 cyrus    mail     12786596 Oct 30 16:38 mailboxes.db
  -rw-------   1 cyrus    mail     73179136 Oct 30 16:38 deliver.db
  -rw-------   1 cyrus    mail     1515520 Oct 30 16:38 tls_sessions.db

TLS sessions show up in the log.  Cyrus master runs `tlsprune' at
0400, which corresponds to the last update time.  `db_dump' says that
the database is empty.  What could have happened?  This is with
cyrus-imapd-2.1.14.  I do get occasional error messages logged that
refer to this database, but only about once a month.  Here are the
most recent ones:

  Oct 27 15:38:53 electra imapd[25366]: [ID 729713 local6.error] DBERROR: opening /imap/conf/tls_sessions.db: Invalid argument
  Oct 27 15:38:53 electra imapd[25366]: [ID 729713 local6.error] DBERROR: opening /imap/conf/tls_sessions.db: cyrusdb error

-- 
-Gary Mills-    -Unix Support-    -U of M Academic Computing and Networking-