thr3ads.net - dovecot - Dict quota calculation errors "remote disconnected"/"broken pipe" on 2.22. [Feb 2017]

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ygrishin-lists at mail2.ca

2017-Feb-05 17:53 UTC

Dict quota calculation errors "remote disconnected"/"broken pipe" on 2.22.

Keywords: dovecot, dict, quota, postgre sql, broken pipe, remote 
disconnected

Having Dovecot 2.2.22 (fe789d2) with Postgre SQL 9.5 
(9.5.5-0ubuntu0.16.04) as the backend. I do not understand why quota 
service is not working, not seeing it as a configuration error at least. 
My quotas are DICT/SQL based.
OS: Ubuntu 16.0.4.1 32-bit (Linux XXX 4.4.0-59-generic #80-Ubuntu SMP 
Fri Jan 6 17:36:54 UTC 2017 i686 i686 i686 GNU/Linux)


dovecot --build-options:
***********************
Build options: ioloop=epoll notify=inotify ipv6 openssl 
io_block_size=8192
Mail storages: shared mdbox sdbox maildir mbox cydir imapc pop3c raw 
fail
SQL driver plugins: mysql postgresql sqlite
Passdb: checkpassword ldap pam passwd passwd-file shadow sql
Userdb: checkpassword ldap(plugin) nss passwd prefetch passwd-file sql


/etc/dovecot/conf.d/10-master.conf:
***********************************
service quota-warning {
   executable = script /etc/dovecot/some-script.sh
   unix_listener quota-warning {
   user = Debian-exim
   mode = 0660
   }
}
service dict {
   unix_listener dict {
   mode = 0660
   user = Debian-exim
   group = Debian-exim
   }
}


/etc/dovecot/conf.d/90-quota.conf:
**********************************
plugin {
   quota = dict:user_quota::proxy::sqlquota
   quota_rule2 = Trash:storage=+10%%
   quota_rule3 = Junk:storage=+10%%
   quota_grace = 10%%
   quota_warning = storage=100%% quota-exceeded 100 %u
   quota_warning2 = storage=95%% quota-warning 95 %u
   quota_warning3 = storage=90%% quota-warning 90 %u
   quota_warning4 = storage=75%% quota-warning 75 %u
}
dict {
   sqlquota = pgsql:/etc/dovecot/dovecot-dict-sql-user.conf
}


/etc/dovecot/dovecot-dict-sql-user.conf:
****************************************
connect = host=A.B.C.D dbname=db user=DDD password=YYY
map {
    pattern = priv/quota/storage
    table = quota2
    username_field = username
    value_field = bytes
  }
map {
    pattern = priv/quota/messages
    table = quota2
    username_field = username
    value_field = messages
  }


I will not be able to provide full "doveconf -n" output unfortunately.

Logging ALL incoming DB queries:
********************************
...
2017-02-04 12:03:12 MST [29500-10] DDD at db LOG:  statement: SELECT 
password FROM mailbox WHERE local_part = 'YYY' AND domain =
'XXX' AND
active ='t' LIMIT 1;
2017-02-04 12:03:12 MST [29501-10] DDD at db LOG:  statement: SELECT 111 AS 
uid, 222 AS gid, '/var/mail/AAA/' || 'BBB' || '/' ||
'YYY' AS home,
'*:bytes=' || mailbox.quota AS quota_rule FROM mailbox WHERE local_part 
= 'YYY' AND active ='t' LIMIT 1;
<END OF FILE HERE>

And seeing that BOTH dict statements are missing: SELECT and UPDATE.


dovecot-lda-erros.log:
**********************
Feb 04 14:23:33 lda(testuser at XXX): Error: read(/var/run/dovecot/dict) 
failed: Remote disconnected
Feb 04 14:23:33 lda(testuser at XXX): Error: Internal quota calculation 
error
Feb 04 14:23:33 lda(testuser at XXX): Error: Internal quota calculation 
error


dovecot.log:
************
Feb 04 13:57:06 imap(YYY at XXX): Error: write(/var/run/dovecot/dict) 
failed: Broken pipe
Feb 04 13:57:06 imap(YYY at XXX): Error: write(/var/run/dovecot/dict) 
failed: Broken pipe
...
Feb 04 13:57:07 imap(YYY at XXX): Error: write(/var/run/dovecot/dict) 
failed: Broken pipe
...
Feb 04 13:57:10 imap(YYY at XXX): Error: write(/var/run/dovecot/dict) 
failed: Broken pipe

I have tried stopping dovecot, removing /var/run/dovecot/dict manually 
and starting dovecot. This has not changed the behavior.


dovecot-debug.log:
******************
Feb 04 13:18:12 lda(YYY at XXX): Error: read(/var/run/dovecot/dict) failed: 
Remote disconnected
Feb 04 13:18:12 lda(YYY at XXX): Error: dict quota: Quota update failed, 
it's now desynced
Feb 04 13:57:07 lda(testuser at XXX): Error: write(/var/run/dovecot/dict) 
failed: Broken pipe
Feb 04 13:57:07 lda(testuser at XXX): Error: Internal quota calculation 
error
Feb 04 13:57:07 lda(testuser at XXX): Error: Internal quota calculation 
error


Running 'user_query' manually on the server:
********************************************
db=> SELECT 111 AS uid, 222 AS gid, '/var/mail/AAA/' || 'XXX'
|| '/' ||
'testuser' AS home, '*:bytes=' || mailbox.quota AS quota_rule
FROM mailbox WHERE local_part = 'testuser' AND active ='t' LIMIT
1;
  uid | gid |               home                |    quota_rule
-----+-----+-----------------------------------+------------------
  111 | 222 | /var/mail/AAA/BBB/testuser | *:bytes=10485760
(1 row)


The identity had been granted 'all' privilege for 'quota2'
table:
*****************************************************************
db=> SELECT table_catalog, table_schema, table_name, privilege_type
db-> FROM   information_schema.table_privileges
db-> WHERE  grantee='DDD';
  table_catalog | table_schema | table_name | privilege_type
---------------+--------------+------------+----------------
  mail          | public       | quota2     | INSERT
  mail          | public       | quota2     | SELECT
  mail          | public       | quota2     | UPDATE
  mail          | public       | quota2     | DELETE
  mail          | public       | quota2     | TRUNCATE
  mail          | public       | quota2     | REFERENCES
  mail          | public       | quota2     | TRIGGER
  mail          | public       | mailbox    | SELECT
  mail          | public       | quota      | INSERT
  mail          | public       | quota      | SELECT
  mail          | public       | quota      | UPDATE
  mail          | public       | quota      | DELETE
  mail          | public       | quota      | TRUNCATE
  mail          | public       | quota      | REFERENCES
  mail          | public       | quota      | TRIGGER
(15 rows)


Rows are obviously not getting inserted:
***************************************
db=> select * from quota2;
  username | bytes | messages
----------+-------+----------
(0 rows)


I have checked logs for any crash-related messages, there's none.

Also, I have tried to deploy 2.27-release version on the server to see 
whether the behavior is gone. I set-up a testing environment which 
consists of ubuntu-16.0.4-i386 server, installed build-essential package 
and unpacked the dovecot-2.2.27.tar.gz there. Getting exactly same issue 
as Ricardo Machini was having in his post to "v2.2.27 released" thread
on Sat Dec 3 21:20:05 UTC 2016:
****************************************
checking that generated files are newer than configure... done
configure: error: conditional "SSL_VERSION_GE_102" was never defined.
Usually this means the macro was only invoked conditionally.

All I ran was ./configure
'openssl' package is installed as well.

Steffen Kaiser

2017-Feb-08 07:10 UTC

head link

Dict quota calculation errors "remote disconnected"/"broken pipe" on 2.22.

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

On Sun, 5 Feb 2017, ygrishin-lists at mail2.ca wrote:
> service dict {
>  unix_listener dict {
>  mode = 0660
>  user = Debian-exim
>  group = Debian-exim
>  }
> }
>
> dovecot-lda-erros.log:
> **********************
> Feb 04 14:23:33 lda(testuser at XXX): Error: read(/var/run/dovecot/dict)
failed:
> Remote disconnected
>
> dovecot.log:
> ************
> Feb 04 13:57:06 imap(YYY at XXX): Error: write(/var/run/dovecot/dict)
failed:
> Broken pipe
> ...
>
> dovecot-debug.log:
> ******************
> Feb 04 13:18:12 lda(YYY at XXX): Error: read(/var/run/dovecot/dict) failed:
> Remote disconnected
> Feb 04 13:18:12 lda(YYY at XXX): Error: dict quota: Quota update failed,
it's
> now desynced
> Feb 04 13:57:07 lda(testuser at XXX): Error: write(/var/run/dovecot/dict) 
> failed: Broken pipe
Does a process listens on /var/run/dovecot/dict ?
The socket is accessable by Debian-exim:Debian-exim only (0660). As what 
user and group does the LDA and imap service run as?

- -- 
Steffen Kaiser
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ygrishin-lists at mail2.ca

2017-Feb-13 02:27 UTC

head link

Dict quota calculation errors "remote disconnected"/"broken pipe" on 2.22.

On 2017-02-08 00:10, Steffen Kaiser wrote:> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
> 
> On Sun, 5 Feb 2017, ygrishin-lists at mail2.ca wrote:
> 
>> service dict {
>>  unix_listener dict {
>>  mode = 0660
>>  user = Debian-exim
>>  group = Debian-exim
>>  }
>> }
>> 
>> dovecot-lda-erros.log:
>> **********************
>> Feb 04 14:23:33 lda(testuser at XXX): Error:
read(/var/run/dovecot/dict)
>> failed: Remote disconnected
>> 
>> dovecot.log:
>> ************
>> Feb 04 13:57:06 imap(YYY at XXX): Error: write(/var/run/dovecot/dict) 
>> failed: Broken pipe
>> ...
>> 
>> dovecot-debug.log:
>> ******************
>> Feb 04 13:18:12 lda(YYY at XXX): Error: read(/var/run/dovecot/dict) 
>> failed: Remote disconnected
>> Feb 04 13:18:12 lda(YYY at XXX): Error: dict quota: Quota update
failed,
>> it's now desynced
>> Feb 04 13:57:07 lda(testuser at XXX): Error:
write(/var/run/dovecot/dict)
>> failed: Broken pipe
> 
> Does a process listens on /var/run/dovecot/dict ?
It certainly does:

#lsof /var/run/dovecot/dict
COMMAND  PID USER   FD   TYPE     DEVICE SIZE/OFF  NODE NAME
dovecot 1140 root   42u  unix 0xc6fe2300      0t0 15861 
/var/run/dovecot/dict type=STREAM

$ ls -l /var/run/dovecot/dict
srw-rw---- 1 Debian-exim Debian-exim 0 Feb 12 03:53 
/var/run/dovecot/dict
> The socket is accessable by Debian-exim:Debian-exim only (0660). As
> what user and group does the LDA and imap service run as?
LDA works as dovecot:Debian-exim:
*********************************
         lda:
                 driver = pipe
...
                 group = Debian-exim
...

(without specifying the user explicitly).

Yuriy

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