[debian-mysql] Bug#1032047: mariadb-server: Preinst fails if user has mariadb running while system service stopped.

[Otto Kekäläinen]

(Adding akonadi-backend-mysql maintainers as recipients)

Hi!

When MariaDB Server upgrades, it could trigger a restart in
akonadi-backend-mysql, or the maintainer scripts could directly stop
the akonadi-backend-mysql. I am open to any solution here.

The main question is: what are the expectations from Akonadi on
MariaDB upgrades?

If MariaDB completely ignores Akonadi, you might run into problems
because Akonadi/mysqld did not have a clean shutdown on MariaDB 10.5
and then MariaDB 10.11 will fail to start because crash recovery
across major versions. Before going into major version upgrade the old
server needs to be stopped gracefully with for example `pkill mysqld`
(or a more elaborate version matching other binary names and checking
for process owning user etc). If MariaDB stops the server something
needs to exist to restart it.

Merge Requests on Salsa against
https://salsa.debian.org/mariadb-team/mariadb-server/-/blob/debian/latest/debian/mariadb-server.preinst#L27-47
are welcome!