[debian-mysql] Bug#853008: Bug#853008: Bug#853008: Bug#853008: mysql-server-5.7: purge could delete mariadb-server files with inadequate warning

[Lars Tangvald]

On 02/21/2017 01:59 PM, Julian Gilbey wrote:
> On Tue, Feb 21, 2017 at 01:27:44PM +0100, Lars Tangvald wrote:
>> I've looked at it some more, and I'm hesitant about including such a big
>> patch for a pretty rare scenario, which in the worst case does ask the
>> following:
>>   The /var/lib/mysql directory which contains the MySQL databases is about
>>   to be removed.
>>   .
>>   This will also erase all data in /var/lib/mysql-files as well as
>>   /var/lib/mysql-keyring.
>>   .
>>   If you're removing the MySQL package in order to later install a more
>>   recent version or if a different mysql-server package is already
>>   using it, the data should be kept.
>>
>> My suggestion is that for now, we revert the patch that enabled the
>> purge-remove (meaning postrm will never delete anything or ask to do so) and
>> instead work on separating the data for the different packages so that
>> MariaDB and MySQL data isn't in the same location.
> Hi Lars,
>
> Does that mean that the whole remove section just gets removed from
> the postrm, or that you put back the test for /usr/sbin/mysqld existing?
>
> Best wishes,
>
>     Julian
>
Only reverting the commit would put it back, which I guess would be best 
since I think it can trigger if you first do apt-get remove and then 
apt-get purge (without installing a different variant between).

--
Lars