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Allow "in place" tablespaces.

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This is a backpatch to branches 10-14 of the following commits:

7170f2159f Allow "in place" tablespaces.
c6f2f01611 Fix pg_basebackup with in-place tablespaces.
f6f0db4d62 Fix pg_tablespace_location() with in-place tablespaces
7a7cd84893 doc: Remove mention to in-place tablespaces for pg_tablespace_location()
5344723755 Remove unnecessary Windows-specific basebackup code.

In-place tablespaces were introduced as a testing helper mechanism, but
they are going to be used for a bugfix in WAL replay to be backpatched
to all stable branches.

I (Álvaro) had to adjust some code to account for lack of
get_dirent_type() in branches prior to 14.

Author: Thomas Munro <thomas.munro@gmail.com>
Author: Michaël Paquier <michael@paquier.xyz>
Author: Álvaro Herrera <alvherre@alvh.no-ip.org>
Discussion: https://postgr.es/m/20220722081858.omhn2in5zt3g4nek@alvherre.pgsql
This commit is contained in:
Alvaro Herrera
2022-07-27 07:55:12 +02:00
parent 968b89257b
commit ca347f5433
6 changed files with 114 additions and 7 deletions
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12
src/backend/utils/misc/guc.c
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@ -38,6 +38,7 @@
#include "catalog/pg_authid.h"
#include "commands/async.h"
#include "commands/prepare.h"
#include "commands/tablespace.h"
#include "commands/user.h"
#include "commands/vacuum.h"
#include "commands/variable.h"
@ -1792,6 +1793,17 @@ static struct config_bool ConfigureNamesBool[] =
NULL, NULL, NULL
},
{
{"allow_in_place_tablespaces", PGC_SUSET, DEVELOPER_OPTIONS,
gettext_noop("Allows tablespaces directly inside pg_tblspc, for testing."),
NULL,
GUC_NOT_IN_SAMPLE
},
&allow_in_place_tablespaces,
false,
NULL, NULL, NULL
},
{
{"lo_compat_privileges", PGC_SUSET, COMPAT_OPTIONS_PREVIOUS,
gettext_noop("Enables backward compatibility mode for privilege checks on large objects."),