[Dovecot] now rc24 Re: rc22 segv when over quota
Steffen Kaiser
skdovecot at smail.inf.fh-bonn-rhein-sieg.de
Fri Feb 23 08:49:38 UTC 2007
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On Fri, 23 Feb 2007, Steffen Kaiser wrote:
When ^C "dovecot -F", there are log messages like:
dovecot: Feb 23 09:04:41 Warning: I/O leak: 0x804d860 (158)
dovecot: Feb 23 09:04:41 Warning: I/O leak: 0x804d860 (152)
====
I just downloaded & compiled rc24.
In the mean time, I also put kernel 2.6.20 on this box.
There is a change in the log:
Note the "Success", previous versions said "Disk quota exceeded". I tested
with the _same_ (not copies, but physically the same files) mailbox, index
and control files in rc22, rc23 and rc24.
I also notices a different behaviour, whether the user's hard quota is
100% full when uploading another mail starts, in opposite when the hard
quota is reached during the upload, please see the end of the mail.
===
The disk quotas are absolutely utilised, no single block can be allocated
on the disk with the maildir. (indexes and control files are located
elsewhere without quota).
dovecot: Feb 23 09:13:29 Error: IMAP(dvtest):
o_stream_send_istream(/mnt/mailcache/dvtest/MailDir/.test/tmp/1172218409.P19175Q0M237232.ux-2s11-9)
failed: Success
dovecot: Feb 23 09:13:29 Error: child 19175 (imap) killed with signal 11
Using host libthread_db library "/lib/tls/i686/cmov/libthread_db.so.1".
warning: Can't read pathname for load map: Input/output error.
Core was generated by `imap [dvtest 10.20.10.63]'.
Program terminated with signal 11, Segmentation fault.
#0 mailbox_save_continue (ctx=0x80deb54) at mail-storage.c:530
530 return ctx->transaction->box->v.save_continue(ctx);
#0 mailbox_save_continue (ctx=0x80deb54) at mail-storage.c:530
No locals.
#1 0x080571f3 in client_input (context=0x80deb10) at cmd-append.c:67
client = (struct client *) 0x0
cmd = (struct client_command_context *) 0x80e0d68
#2 0x080ba752 in io_loop_handler_run (ioloop=0x80dd9b0) at
ioloop-poll.c:199
ctx = (struct ioloop_handler_context *) 0x80dd9d8
pollfd = <value optimized out>
tv = {tv_sec = 9, tv_usec = 994346}
io = (struct io *) 0x80decc8
t_id = 2
msecs = <value optimized out>
ret = 135129872
call = <value optimized out>
#3 0x080b9a98 in io_loop_run (ioloop=0x80dd9b0) at ioloop.c:284
No locals.
#4 0x08063980 in main (argc=Cannot access memory at address 0x5a8
) at main.c:287
home = 0x0
=====
/usr/local# ./dovecot.rc24/sbin/dovecot -n
# /usr/local/dovecot.rc24/etc/dovecot.conf
log_path: /var/tmp/dovecot.log
info_log_path: /var/tmp/dovecot.info
ssl_disable: yes
disable_plaintext_auth: no
verbose_ssl: yes
login_dir: /usr/local/dovecot.rc24/var/run/dovecot/login
login_executable: /usr/local/dovecot.rc24/libexec/dovecot/imap-login
verbose_proctitle: yes
mail_location:
maildir:/mnt/mailcache/%u/MailDir:CONTROL=/var/cache/dovecot/%i/control:INDEX=/var/cache/dovecot/%i/index
mail_debug: yes
mail_drop_priv_before_exec: yes
auth default:
mechanisms: plain login
cache_size: 10
verbose: yes
debug: yes
debug_passwords: yes
passdb:
driver: pam
args: cache_key=%u dovecot
userdb:
driver: passwd
=====
Summary of configure:
Install prefix ...................... : /usr/local/dovecot.rc24
File offsets ........................ : 64bit
I/O loop method ..................... : poll
File change notification method ..... : dnotify
Building with SSL support ........... : yes (OpenSSL)
Building with IPv6 support .......... : yes
Building with pop3 server ........... : yes
Building with mail delivery agent .. : yes
Building with GSSAPI support ........ : no
Building with user database modules . : static prefetch passwd passwd-file
checkpassword ldap sql (modules)
Building with password lookup modules : passwd passwd-file shadow pam
checkpassword ldap sql (modules)
Building with SQL drivers ............: pgsql
===========
I re-built Dovecot rc24 with no argument other than --prefix:
Install prefix ...................... : /usr/local/dovecot.rc24_plain
File offsets ........................ : 64bit
I/O loop method ..................... : poll
File change notification method ..... : dnotify
Building with SSL support ........... : yes (OpenSSL)
Building with IPv6 support .......... : yes
Building with pop3 server ........... : yes
Building with mail delivery agent .. : yes
Building with GSSAPI support ........ : no
Building with user database modules . : static prefetch passwd passwd-file
checkpassword (modules)
Building with password lookup modules : passwd passwd-file shadow pam
checkpassword (modules)
Building with SQL drivers ............:
The behaviour is the same.
====
Found another thing, I removed one mail, hence, the quota dropped a bit
below the hard quota:
Disk quotas for user dvtest (uid 1012):
Filesystem blocks quota limit grace files quota limit
grace
1021* 600 1024 6days 145 0 0
When I now upload a mail above 4K to the server:
dovecot: Feb 23 09:34:41 Error: IMAP(dvtest):
o_stream_send_istream(/mnt/mailcache/dvtest/MailDir/.test/tmp/1172219681.P20611Q0M827098.ux-2s11-9)
failed: Success
Note: The first time, there was NO segv, but just a note about an internal
server error and that I should refer to the server log.
dovecot: Feb 23 09:35:00 Error: IMAP(dvtest):
o_stream_send_istream(/mnt/mailcache/dvtest/MailDir/.test/tmp/1172219700.P20612Q0M157711.ux-2s11-9)
failed: Success
dovecot: Feb 23 09:35:00 Error: child 20612 (imap) killed with signal 11
dovecot: Feb 23 09:35:00 Error: IMAP(dvtest):
o_stream_send_istream(/mnt/mailcache/dvtest/MailDir/.test/tmp/1172219700.P20611Q1.ux-2s11-9)
failed: Success
dovecot: Feb 23 09:35:00 Error: child 20611 (imap) killed with signal 11
This is the second try immediately following the first one. I got the box
about an internal server error on time.
======
Restart Dovecot, the following happens in one session of Dovecot and
Thunderbird, no manual restarts.
Try to upload a 8KB mail:
dovecot: Feb 23 09:40:13 Error: IMAP(dvtest):
o_stream_send_istream(/mnt/mailcache/dvtest/MailDir/tmp/1172220013.P20656Q0M441909.ux-2s11-9)
failed: Success
dovecot: Feb 23 09:40:13 Error: child 20656 (imap) killed with signal 11
dovecot: Feb 23 09:40:13 Error: IMAP(dvtest):
o_stream_send_istream(/mnt/mailcache/dvtest/MailDir/tmp/1172220013.P20657Q0M493383.ux-2s11-9)
failed: Success
One box about internal server error.
Try to upload a 4K mail:
dovecot: Feb 23 09:40:41 Error: IMAP(dvtest):
o_stream_send_istream(/mnt/mailcache/dvtest/MailDir/tmp/1172220041.P20657Q1.ux-2s11-9)
failed: Success
The box: Internal server error
Try to upload a 2KB mail:
success, no log entry; the quota is now 100% full again.
Try to upload another 2KB mail:
endless:
dovecot: Feb 23 09:43:19 Error: IMAP(dvtest):
o_stream_send_istream(/mnt/mailcache/dvtest/MailDir/tmp/1172220199.P21072Q0M865499.ux-2s11-9)
failed: Success
dovecot: Feb 23 09:43:19 Error: child 21072 (imap) killed with signal 11
dovecot: Feb 23 09:43:19 Error: IMAP(dvtest):
o_stream_send_istream(/mnt/mailcache/dvtest/MailDir/tmp/1172220199.P21073Q0M901234.ux-2s11-9)
failed: Success
dovecot: Feb 23 09:43:19 Error: child 21073 (imap) killed with signal 11
dovecot: Feb 23 09:43:19 Error: IMAP(dvtest):
o_stream_send_istream(/mnt/mailcache/dvtest/MailDir/tmp/1172220199.P21074Q0M933467.ux-2s11-9)
failed: Success
dovecot: Feb 23 09:43:19 Error: child 21074 (imap) killed with signal 11
and re-logins log entries.
Thunderbird re-tries to upload the mail again and again.
Bye,
- --
Steffen Kaiser
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