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authorHeikki Linnakangas <heikki.linnakangas@iki.fi>2013-09-16 14:36:01 +0300
committerHeikki Linnakangas <heikki.linnakangas@iki.fi>2014-02-20 10:46:54 +0200
commit5a7e75849cb595943fc605c4532716e9dd69f8a0 (patch)
tree519953e8d7b6f06c2d3f704bf1c726c7a662a2ab /src
parent0aaa4224108611d2fad80451c69db117eb86217f (diff)
downloadpostgresql-5a7e75849cb595943fc605c4532716e9dd69f8a0.tar.gz
postgresql-5a7e75849cb595943fc605c4532716e9dd69f8a0.zip
Add a GUC to report whether data page checksums are enabled.
Backported from master. It was an oversight in the original data checksums patch to not have a GUC like this.
Diffstat (limited to 'src')
-rw-r--r--src/backend/access/transam/xlog.c4
-rw-r--r--src/backend/utils/misc/guc.c12
2 files changed, 16 insertions, 0 deletions
diff --git a/src/backend/access/transam/xlog.c b/src/backend/access/transam/xlog.c
index 314b9e97fae..d57bf50e0b4 100644
--- a/src/backend/access/transam/xlog.c
+++ b/src/backend/access/transam/xlog.c
@@ -3739,6 +3739,10 @@ ReadControlFile(void)
" but the server was compiled without USE_FLOAT8_BYVAL."),
errhint("It looks like you need to recompile or initdb.")));
#endif
+
+ /* Make the initdb settings visible as GUC variables, too */
+ SetConfigOption("data_checksums", DataChecksumsEnabled() ? "yes" : "no",
+ PGC_INTERNAL, PGC_S_OVERRIDE);
}
void
diff --git a/src/backend/utils/misc/guc.c b/src/backend/utils/misc/guc.c
index 68af19221e0..eae0d97bdc3 100644
--- a/src/backend/utils/misc/guc.c
+++ b/src/backend/utils/misc/guc.c
@@ -464,6 +464,7 @@ static int max_identifier_length;
static int block_size;
static int segment_size;
static int wal_block_size;
+static bool data_checksums;
static int wal_segment_size;
static bool integer_datetimes;
static int effective_io_concurrency;
@@ -1453,6 +1454,17 @@ static struct config_bool ConfigureNamesBool[] =
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 */
{
{NULL, 0, 0, NULL, NULL}, NULL, false, NULL, NULL, NULL