Re: Allowing multiple concurrent base backups

On Tue, Jan 25, 2011 at 5:14 AM, Heikki Linnakangas
<heikki(dot)linnakangas(at)enterprisedb(dot)com> wrote:
>> I'm not entirely sure the replication privilege removal is correct.
>> Doing that, it's no longer possible to deploy a slave *without* using
>> pg_basebackup, unless you are superuser. Do we really want to put that
>> restriction back in?
>
> Hmm, I thought we do, I thought that was changed just to make pg_basebackup
> work without superuser privileges.

If we encourage users not to use the "replication" privilege to log in
the database, putting that restriction seems to be reasonable.

> Ok, I won't touch that. But then we'll need to decide what to do about
> Fujii's observation
> (http://archives.postgresql.org/pgsql-hackers/2011-01/msg01934.php)

Yes. If we allow the "replication" users to call pg_start/stop_backup,
we also allow them to connect to the database even during shutdown
in order to cancel the backup.

Regards,

--
Fujii Masao
NIPPON TELEGRAPH AND TELEPHONE CORPORATION
NTT Open Source Software Center