[Akonadi] [Bug 283682] KMail duplicates filtered messages

[bugzilla_noreply at kde.org]

https://bugs.kde.org/show_bug.cgi?id=283682

--- Comment #224 from linuxfan at posteo.de ---

the log file is /var/log/mysql/mysqld.err

However, digging deeper, the problem might be related to two instances of
mariadb being present.

pgrep -af mysqld yields

2402 /usr/sbin/mysqld --defaults-file=/etc/mysql/my.cnf
2881 /usr/sbin/mysqld
--defaults-file=/home/linuxfan/.local/share/akonadi/mysql.conf
--datadir=/home/linuxfan/.local/share/akonadi/db_data/
--socket=/run/user/10001/akonadi/mysql.socket
--pid-file=/run/user/1000/akonadi/mysql.pid

While /var/log/mysql/mysqld.err is now clear, in 

/home/linuxfan/.local/share/akonadi/db_data/mysql.err

I can see two further errors and some warnings:

[ERROR] Can't open and lock privilege tables: Table 'mysql.servers' doesn't
exist
 [Warning] Can't open and lock time zone table: Table
'mysql.time_zone_leap_second' doesn't exist trying to live without them
 [Warning] Failed to load slave replication state from table
mysql.gtid_slave_pos: 1017: Can't find file: './mysql/' (errno: 2 "No such file
or directory")
 [Note] Reading of all Master_info entries succeeded
 [Note] Added new Master_info '' to hash table
 [Note] /usr/sbin/mysqld: ready for connections.
Version: '10.4.12-MariaDB'  socket: '/run/user/1000/akonadi/mysql.socket' 
port: 0  Source distribution
[ERROR] InnoDB: Table `mysql`.`innodb_table_stats` not found.

what is more important, I believe, is that akonadi seems to start the second
mysql instance but some of the data is actually going to my main mysql server
instead and its data directory /home/mysql_data/ while other parts are ending
up in the akonadi-instance of mysql. 

After disabling the stand-alone server, I found that 
~/.config/akonadi/akonadiserverrc

still contained the line

Options="UNIX_SOCKET=/var/run/mysql/mysqld.socket"

pointing to the main server socket. Clearing this up, everything seems to end
up in the akonadi-version of mysql (with the above warnings/errors, not sure
what that means). I am unsure, why some of the data still went to the
akonadi-version of mysql, though.

>From my point of view, I seem to have had some mess in the config files as I
have been dragging/upgrading my /home/ directory with me since 1997 .... (and
yes, I have been using KDE ever since the original beta1)

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