Timo Sirainen wrote:
On Mon, 2006-09-25 at 11:16 +0100, Chris Wakelin wrote:
- Replace the userdb passwd-file (mv userdb userdb.temp;cp userdb.temp userdb) to clobber any caching
Or you could just "touch userdb".
Probably doesn't prevent disk caching, I thought. Though just "cp userdb.temp userdb" should work!
dovecot: Sep 25 10:38:11 Warning: SIGHUP received - reloading configuration dovecot: Sep 25 10:38:12 Error: invalid I/O fd 29, callback 17d2c
Could you do:
gdb dovecot x 0x17d2c
(gdb) x 0x17d2c 0x17d2c <login_process_input>: 0x9de3bf50 (gdb)
dovecot: Sep 25 10:38:12 Error: login: fd_read() failed: Resource temporarily unavailable
Hmm. I guess this could be fixed by simply returning from the function if it returns EAGAIN..
dovecot: Sep 25 10:38:12 Error: Login process died too early - shutting down dovecot: Sep 25 10:38:13 Panic: file ioloop-poll.c: line 105 (io_loop_handle_remove): assertion failed: (index >= 0 && (unsigned int) index < ctx->fds_count)
Could you get gdb backtrace from this? Since it's dovecot master process, it should write core to /var/run/dovecot/ (assuming you had ulimit -c high enough).
... Program terminated with signal 6, Abort. ... Reading symbols from /usr/platform/SUNW,Ultra-250/lib/libc_psr.so.1...done. Loaded symbols for /usr/platform/SUNW,Ultra-250/lib/libc_psr.so.1
#0 0xff21fbe8 in _libc_kill () from /usr/lib/libc.so.1 (gdb) bt #0 0xff21fbe8 in _libc_kill () from /usr/lib/libc.so.1 #1 0xff1b598c in abort () from /usr/lib/libc.so.1 #2 0x1f874 in default_fatal_handler (status=196248, format=0xffbef5e8 "", args=0x1f84c) at failures.c:120
The backtrace for the live server was very similar.
I'm concerned though, that the crash on the test version on the live server and the first crash on the test server didn't involve fd_read, so perhaps there's more than one issue here?
Is there a way to get imap-login to dump core when it dies? (We're running with the default login_chroot=yes, if that makes any difference.)
Best Wishes, Chris
-- --+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+- Christopher Wakelin, c.d.wakelin@reading.ac.uk IT Services Centre, The University of Reading, Tel: +44 (0)118 378 8439 Whiteknights, Reading, RG6 2AF, UK Fax: +44 (0)118 975 3094