David Favor wrote:
Seems to have had something to do with pam occasionally losing it's marbles. I've removed pam from my config file and all works well now with latest dovecot with latest openssl development nightly snapshot.
- David
Timo Sirainen wrote:
On Sun, 2007-06-10 at 21:12 -0500, David Favor wrote:
The 20070605 version of dovecot starts up doing ssl protocol perfect, then after clicking a few directories, then when clicking back to INBOX, dovecot hangs. There is no logging info, even with --enable-debug on and all .conf file directives I can find. Doing a 'ngrep port 993' shows no SSL dialog.
Enable rawlog to see what were the last commands and their output. http://dovecot.org/bugreport.html
strace the running imap process to see if it's just waiting in epoll() or if it's doing something else.
There is no imap process to strace. Here's the ps -A | grep dovecot at the time:
dovecot dovecot 30905 30912 24 09:50 420 00:00:00 0.0 0.1 imap-login imap-login
dovecot dovecot 30905 30913 24 09:50 420 00:00:00 0.0 0.1 imap-login imap-login
dovecot dovecot 30905 30910 24 09:50 420 00:00:00 0.0 0.1 imap-login imap-login
dovecot dovecot 30905 30911 24 09:50 424 00:00:00 0.0 0.1 imap-login imap-login
root root 30111 326 23 10:04 240 00:00:00 0.0 0.0 grep grep dovecot
root root 1 30905 24 09:50 264 00:00:00 0.0 0.0 dovecot
/usr/local/pkgs/dovecot-20070605/sbin/dovecot -c /tools/conf/dovecot.conf
root root 30905 30906 24 09:50 420 00:00:00 0.0 0.0 dovecot-auth dovecot-auth
dovecot dovecot 30905 30909 24 09:50 272 00:00:00 0.0 0.1 imap-login imap-login
My primary question is howto debug this hang, short of attaching gdb to the process.
If it's not in epoll(), getting a gdb backtrace would be helpful too.
Hmm. Or the above things matter only if the problem is with imap process and not with handling the SSL connection. So it would also be good to know if it hangs also without SSL.
BTW. --enable-debug doesn't make Dovecot log any more than it normally does. It instead enables some extra code that makes Dovecot do more sanity checks so I can notice sooner if I break something. Unless you're modifying Dovecot's sources yourself it most likely isn't very useful.
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