OK. It turns out to be not such a big deal. The MyISAM table is declared
crashed if the number of open file handles doesn't match the counter in the
header. MySQL 5.1 doesn't care and doesn't write these warnings to the logs
but it still can be detected and fixed with mysqlcheck:
# mysqlcheck --all-databases
...
wordpress-test.wp_actionscheduler_claims
warning : 3 clients are using or haven't closed the table properly
status : OK
...
wordpress-test.wp_options
warning : 3 clients are using or haven't closed the table properly
status : OK
So run mysqlcheck --databases ... before moving the DBs to a new location
or import the data from a mysql dump.
пн, 30 нояб. 2020 г. в 15:28, Александр Кириллов :
> Hi,
>
> I've started migrating my sites to mariadb which is supposed to be a
> drop-in replacement of mysql. Both run on the same C6 box. DB folders were
> moved to a new location after both DB servers were stopped and properly
> upgraded. There were no reboots or power failures. Nevertheless I see these
> error messages in the logs:
>
> # cat /var/opt/rh/rh-mariadb102/log/mariadb/mariadb.log
> ...
> 2020-11-29 16:38:23 139882501732320 [Note]
> /opt/rh/rh-mariadb102/root/usr/libexec/mysqld: ready for connections.
> Version: '10.2.22-MariaDB' socket:
> '/var/opt/rh/rh-mariadb102/lib/mysql/mysql.sock' port: 3307 MariaDB Server
> 2020-11-29 16:38:23 139882394105600 [Warning] Access denied for user
> 'UNKNOWN_MYSQL_USER'@'localhost' (using password: NO)
> 2020-11-29 16:39:37 139882394105600 [ERROR] mysqld: Table
> './wordpress@002dstorefront/wp_wc_customer_lookup' is marked as crashed
> and should be repaired
> 2020-11-29 16:39:37 139882394105600 [ERROR] mysqld: Table
> 'wp_wc_customer_lookup' is marked as crashed and should be repaired
> 2020-11-29 16:39:37 139882394105600 [ERROR] mysqld: Table
> './wordpress@002dstorefront/wp_wc_customer_lookup' is marked as crashed
> and should be repaired
> 2020-11-29 16:39:37 139882394105600 [ERROR] mysqld: Table
> 'wp_wc_customer_lookup' is marked as crashed and should be repaired
> 2020-11-29 16:39:37 139882394105600 [Warning] Checking table:
> './wordpress@002dstorefront/wp_wc_customer_lookup'
> ...
> 2020-11-29 17:16:17 140059421116384 [Note]
> /opt/rh/rh-mariadb102/root/usr/libexec/mysqld: ready for connections.
> Version: '10.2.22-MariaDB' socket:
> '/var/opt/rh/rh-mariadb102/lib/mysql/mysql.sock' port: 3307 MariaDB Server
> 2020-11-29 17:16:18 140059356550912 [Warning] Access denied for user
> 'UNKNOWN_MYSQL_USER'@'localhost' (using password: NO)
> 2020-11-29 17:20:01 140059356550912 [ERROR] mysqld: Table
> './wordpress@002dstorefront/wp_options' is marked as crashed and should
> be repaired
> 2020-11-29 17:20:01 140059356550912 [ERROR] mysqld: Table 'wp_options' is
> marked as crashed and should be repaired
> 2020-11-29 17:20:01 140059356550912 [Warning] Checking table:
> './wordpress@002dstorefront/wp_options'
> 2020-11-29 17:20:02 140059356550912 [ERROR] mysqld: Table
> './wordpress@002dstorefront/wp_posts' is marked as crashed and should be
> repaired
> 2020-11-29 17:20:02 140059356550912 [ERROR] mysqld: Table 'wp_posts' is
> marked as crashed and should be repaired
> 2020-11-29 17:20:02 140059356550912 [Warning] Checking table:
> './wordpress@002dstorefront/wp_posts'
> 2020-11-29 17:20:02 140059356550912 [ERROR] mysqld: Table
> './wordpress@002dstorefront/wp_actionscheduler_claims' is marked as
> crashed and should be repaired
> 2020-11-29 17:20:02 140059356550912 [ERROR] mysqld: Table
> 'wp_actionscheduler_claims' is marked as crashed and should be repaired
> 2020-11-29 17:20:02 140059356550912 [Warning] Checking table:
> './wordpress@002dstorefront/wp_actionscheduler_claims'
> 2020-11-29 17:22:28 140059356550912 [ERROR] mysqld: Table
> './wordpress@002dstorefront/wp_usermeta' is marked as crashed and should
> be repaired
> 2020-11-29 17:22:28 140059356550912 [ERROR] mysqld: Table 'wp_usermeta' is
> marked as crashed and should be repaired
> 2020-11-29 17:22:28 140059356550912 [Warning] Checking table:
> './wordpress@002dstorefront/wp_usermeta'
> 2020-11-29 17:22:31 140059356550912 [ERROR] mysqld: Table
> './wordpress@002dstorefront/wp_woocommerce_sessions' is marked as crashed
> and should be repaired
> 2020-11-29 17:22:31 140059356550912 [ERROR] mysqld: Table
> 'wp_woocommerce_sessions' is marked as crashed and should be repaired
> 2020-11-29 17:22:31 140059356247808 [ERROR] mysqld: Table
> './wordpress@002dstorefront/wp_woocommerce_sessions' is marked as crashed
> and should be repaired
> 2020-11-29 17:22:31 140059356247808 [ERROR] mysqld: Table
> 'wp_woocommerce_sessions' is marked as crashed and should be repaired
> 2020-11-29 17:22:31 140059356550912 [Warning] Checking table:
> './wordpress@002dstorefront/wp_woocommerce_sessions'
> ...
>
> Note that after the crashed table was repaired mariadb reported multiple
> crashed tables in the same DB after restart. Any pointers? Never had such
> problems with mysqld. Is mariadb reliable and stable at
