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Add GUC full_page_writes to control writing full pages to WAL.

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This commit is contained in:
Bruce Momjian
2005-07-05 23:18:10 +00:00
parent c19aa704c8
commit 326a7a0788
4 changed files with 55 additions and 5 deletions
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15
src/backend/utils/misc/guc.c
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@ -10,7 +10,7 @@
* Written by Peter Eisentraut <peter_e@gmx.net>.
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/utils/misc/guc.c,v 1.272 2005/07/04 04:51:51 tgl Exp $
* $PostgreSQL: pgsql/src/backend/utils/misc/guc.c,v 1.273 2005/07/05 23:18:10 momjian Exp $
*
*--------------------------------------------------------------------
*/
@ -83,6 +83,7 @@ extern DLLIMPORT bool check_function_bodies;
extern int CommitDelay;
extern int CommitSiblings;
extern char *default_tablespace;
extern bool fullPageWrites;
static const char *assign_log_destination(const char *value,
bool doit, GucSource source);
@ -482,6 +483,18 @@ static struct config_bool ConfigureNamesBool[] =
&zero_damaged_pages,
false, NULL, NULL
},
{
{"full_page_writes", PGC_SIGHUP, WAL_SETTINGS,
gettext_noop("Writes full pages to WAL when first modified after a checkpoint."),
gettext_noop("A page write in process during an operating system crash might be "
"only partially written to disk. During recovery, the row changes"
"stored in WAL are not enough to recover. This option writes "
"pages when first modified after a checkpoint to WAL so full recovery "
"is possible.")
},
&fullPageWrites,
true, NULL, NULL
},
{
{"silent_mode", PGC_POSTMASTER, LOGGING_WHEN,
gettext_noop("Runs the server silently."),