Re: Switch pg_basebackup to use -X stream instead of -X fetch by default?

On Fri, Aug 29, 2014 at 10:37:15PM +0200, Magnus Hagander wrote:
> On Fri, Aug 29, 2014 at 10:34 PM, Peter Eisentraut <peter_e(at)gmx(dot)net> wrote:
> > On 8/27/14 2:55 AM, Magnus Hagander wrote:
> >> I think the easy way of doing that is to just create an xlog.tar file.
> >> Since we already create "base.tar" and possibly n*<tablespace.tar>,
> >> adding one more file shouldn't be a big problem, and would make such
> >> an implementation much easier. Would be trivial to do .tar.gz for it
> >> as well, just like for the others.
> >
> > That might be a way forward, but for someone who doesn't use tablespaces
> > and just wants and all-on-one backup, this change would make that more
> > cumbersome, because now you'd always have more than one file to deal with.
>
> It would in stream mode, which doesn't work at all.
>
> I do agree with Roberts suggestion that we shouldn't remove file mode
> right away - but we should change the default.
>
>
> > It might be worth considering a mode that combines all those tar files
> > into a super-tar. I'm personally not a user of the tar mode, so I don't
> > know what a typical use would be, though.
>
> That would probably be useful, though a lot more difficult when you
> consider two separate processes writing into the same tarfile. But I
> agree that the format for "single tablespace just gimme a bloody
> tarfile" is quite incovenient today, in that you need a directory and
> we drop a "base.tar" in there. We should perhaps try to find a more
> convenient way for that specific usecase, since it probably represents
> the majority of users.

Where are we on this?

--
Bruce Momjian <bruce(at)momjian(dot)us> http://momjian.us
EnterpriseDB http://enterprisedb.com

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