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Add a GUC to report whether data page checksums are enabled.

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Bernd Helmle
This commit is contained in:
Heikki Linnakangas 2013-09-16 14:36:01 +03:00
parent cdeb79adcf
commit 0892ecbc01
3 changed files with 29 additions and 0 deletions
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13
doc/src/sgml/config.sgml
View File

@ -6169,6 +6169,19 @@ dynamic_library_path = 'C:\tools\postgresql;H:\my_project\lib;$libdir'
</listitem> </listitem>
</varlistentry> </varlistentry>
<varlistentry id="guc-data-checksums" xreflabel="data_checksums">
<term><varname>data_checksums</varname> (<type>boolean</type>)</term>
<indexterm>
<primary><varname>data_checksums</> configuration parameter</primary>
</indexterm>
<listitem>
<para>
Reports whether data checksums are enabled for this cluster.
See <xref linkend="app-initdb-data-checksums"> for more information.
</para>
</listitem>
</varlistentry>
<varlistentry id="guc-integer-datetimes" xreflabel="integer_datetimes"> <varlistentry id="guc-integer-datetimes" xreflabel="integer_datetimes">
<term><varname>integer_datetimes</varname> (<type>boolean</type>)</term> <term><varname>integer_datetimes</varname> (<type>boolean</type>)</term>
<indexterm> <indexterm>

4
src/backend/access/transam/xlog.c
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@ -4844,6 +4844,10 @@ ReadControlFile(void)
" but the server was compiled without USE_FLOAT8_BYVAL."), " but the server was compiled without USE_FLOAT8_BYVAL."),
errhint("It looks like you need to recompile or initdb."))); errhint("It looks like you need to recompile or initdb.")));
#endif #endif
/* Make the fixed settings visible as GUC variables, too */
SetConfigOption("data_checksums", DataChecksumsEnabled() ? "yes" : "no",
PGC_INTERNAL, PGC_S_OVERRIDE);
} }
void void

12
src/backend/utils/misc/guc.c
View File

@ -466,6 +466,7 @@ static int max_identifier_length;
static int block_size; static int block_size;
static int segment_size; static int segment_size;
static int wal_block_size; static int wal_block_size;
static bool data_checksums;
static int wal_segment_size; static int wal_segment_size;
static bool integer_datetimes; static bool integer_datetimes;
static int effective_io_concurrency; static int effective_io_concurrency;
@ -1457,6 +1458,17 @@ static struct config_bool ConfigureNamesBool[] =
NULL, NULL, NULL NULL, NULL, NULL
}, },
{
{"data_checksums", PGC_INTERNAL, PRESET_OPTIONS,
gettext_noop("Shows whether data checksums are turned on for this cluster"),
NULL,
GUC_NOT_IN_SAMPLE | GUC_DISALLOW_IN_FILE
},
&data_checksums,
false,
NULL, NULL, NULL
},
/* End-of-list marker */ /* End-of-list marker */
{ {
{NULL, 0, 0, NULL, NULL}, NULL, false, NULL, NULL, NULL {NULL, 0, 0, NULL, NULL}, NULL, false, NULL, NULL, NULL