Re: BUG #16003: pg_basebackup failed with error : directory"xxxxxxx" exists but is not empty

On Thu, Sep 12, 2019 at 09:27:02AM -0400, Magnus Hagander wrote:
> And actually putting new tablespace directories inside other tablespaces is
> *definitely* not the way it's supposed to be done.

Yes.

> As a workaround, you might be able to use pg_basebackup with -T to relocate
> the tablespaces into a directory that is not in conflict.

I was wondering about that and that should work.  Looking at sendDir()
in basebackup.c, we only accept links from the root of pg_tlbspc, so
all any links inside another tablespace would just be ignored.  In
this case, the server would complain with a WARNING and "skipping
special file blah".
--
Michael