Re: security labels on databases are bad for dump & restore

On Tue, Jul 28, 2015 at 3:16 PM, Andres Freund <andres@anarazel.de> wrote:
> On 2015-07-28 15:14:11 -0400, Robert Haas wrote:
>> On Tue, Jul 28, 2015 at 3:10 PM, Andres Freund <andres@anarazel.de> wrote:
>> > DBA creates a database and sets some properties (security labels, gucs,
>> > acls) on it. Then goes on to restore a backup. Unfortunately that backup
>> > might, or might not, overwrite the properties he configured depending on
>> > whether the restored database already contains them and from which
>> > version the backup originates.
>>
>> Well, I think that's just a potential incompatibility between 9.6 and
>> previous versions, and a relatively minor one at that.  We can't and
>> don't guarantee that a dump taken using the 9.3 version of pg_dump
>> will restore correctly on any server version except 9.3.  It might
>> work OK on a newer or older version, but then again it might not.
>
> Even within a single major version it'll be a bit confusing that one
> time a restore yielded the desired result (previously set property
> survives) and the next restore it doesn't, because now the backup does
> contain the property.

How would that happen?  We're not gonna back-patch this.

-- 
Robert Haas
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