[debian-mysql] Bug#1037327: MariaDB upgrade fails if page compressed tables exist already due to plugin dependency

[Otto Kekäläinen]

> I added a test case for this in
> https://salsa.debian.org/otto/mariadb-server/-/commits/bugfix/1037327-upgrades-need-provider-plugin-lz
> and it fails (as expected) in
> https://salsa.debian.org/otto/mariadb-server/-/jobs/4297516 but if we
> come up with a solution, at least we have now a test to validate it.

MR opened https://salsa.debian.org/mariadb-team/mariadb-server/-/merge_requests/51
about the test. I have not yet have time to figure out the best way to
avoid this.

If other people run into this issue, please tell about it by commenting here.

For the time being the manual workaround is to run:

```
cp -a /etc/mysql/mariadb.conf.d/provider_lz4.cnf.dpkg-new
/etc/mysql/mariadb.conf.d/provider_lz4.cnf
apt install mariadb-plugin-provider-lz4
```