Bug#886742: postgresql-9.4-postgis-2.1 missing in stretch

[Jürgen Fuchsberger]

On 2018-01-09 14:16, Bas Couwenberg wrote:
> On 2018-01-09 14:08, Christoph Berg wrote:
>> Re: Juergen Fuchsberger 2018-01-09
>> <20180109130149.17725.10545.reportbug at wegc203058.uni-graz.at>
>>> Due to missing postgresql-9.4-postgis-2.1 in stretch, a postgis enabled
>>> database becomes corrupt when upgrading from jessie to stretch since
>>> the required postgis libraries are missing. This can cause serious data
>>> loss, because once upgraded to stretch, the postgis data can't be
>>> accesed nor dumped (Database gives error "could not access file
>>> "$libdir/postgis-2.1": no such file or directory").
>>
>> Could you append the apt output to this bug? Namely, which packages
>> got removed? (/var/log/apt/term.log)
>>
>>> Also upgrading the database to postgresql-9.6 does not work.
>>
>> What did you try, and what didn't work?
> 
> Probably pg_upgradecluster, and that is not supported for databases with
> the postgis extension.
> 
Exactly. Just wanted to point out that upgrading was no possibility
either, the actual problem was that the database could not be accessed
or dumped after the upgrade.

Juergen