diff --git a/doc/src/sgml/config.sgml b/doc/src/sgml/config.sgml
index 5d45b6f7cb..ea2ecaf13c 100644
--- a/doc/src/sgml/config.sgml
+++ b/doc/src/sgml/config.sgml
@@ -9948,6 +9948,30 @@ LOG: CleanUpLock: deleting: lock(0xb7acd844) id(24688,24696,0,0,0,1)
+
+ ignore_invalid_pages (boolean)
+
+ ignore_invalid_pages configuration parameter
+
+
+
+
+ If set to off (the default), detection of
+ WAL records having references to invalid pages during
+ recovery causes PostgreSQL to
+ raise a PANIC-level error, aborting the recovery. Setting
+ ignore_invalid_pages to on
+ causes the system to ignore those WAL records
+ (but still report a warning), and continue recovery.
+ This behavior may cause crashes, data loss,
+ propagate or hide corruption, or other serious problems.
+ However, it may allow you to get past the PANIC-level error,
+ to finish the recovery, and to cause the server to start up.
+ The parameter can only be set at server start.
+
+
+
+
jit_debugging_support (boolean)
diff --git a/src/backend/access/transam/xlogutils.c b/src/backend/access/transam/xlogutils.c
index b55c383370..b217ffa52f 100644
--- a/src/backend/access/transam/xlogutils.c
+++ b/src/backend/access/transam/xlogutils.c
@@ -31,6 +31,9 @@
#include "utils/rel.h"
+/* GUC variable */
+bool ignore_invalid_pages = false;
+
/*
* During XLOG replay, we may see XLOG records for incremental updates of
* pages that no longer exist, because their relation was later dropped or
@@ -93,7 +96,8 @@ log_invalid_page(RelFileNode node, ForkNumber forkno, BlockNumber blkno,
if (reachedConsistency)
{
report_invalid_page(WARNING, node, forkno, blkno, present);
- elog(PANIC, "WAL contains references to invalid pages");
+ elog(ignore_invalid_pages ? WARNING : PANIC,
+ "WAL contains references to invalid pages");
}
/*
@@ -240,7 +244,8 @@ XLogCheckInvalidPages(void)
}
if (foundone)
- elog(PANIC, "WAL contains references to invalid pages");
+ elog(ignore_invalid_pages ? WARNING : PANIC,
+ "WAL contains references to invalid pages");
hash_destroy(invalid_page_tab);
invalid_page_tab = NULL;
diff --git a/src/backend/utils/misc/guc.c b/src/backend/utils/misc/guc.c
index e5f8a1301f..d071b03b69 100644
--- a/src/backend/utils/misc/guc.c
+++ b/src/backend/utils/misc/guc.c
@@ -123,6 +123,7 @@ extern int CommitSiblings;
extern char *default_tablespace;
extern char *temp_tablespaces;
extern bool ignore_checksum_failure;
+extern bool ignore_invalid_pages;
extern bool synchronize_seqscans;
#ifdef TRACE_SYNCSCAN
@@ -1168,6 +1169,24 @@ static struct config_bool ConfigureNamesBool[] =
false,
NULL, NULL, NULL
},
+ {
+ {"ignore_invalid_pages", PGC_POSTMASTER, DEVELOPER_OPTIONS,
+ gettext_noop("Continues recovery after an invalid pages failure."),
+ gettext_noop("Detection of WAL records having references to "
+ "invalid pages during recovery causes PostgreSQL to "
+ "raise a PANIC-level error, aborting the recovery. "
+ "Setting ignore_invalid_pages to true causes "
+ "the system to ignore such WAL records (but still "
+ "report a warning), and continue recovery. "
+ "This behavior may cause crashes, data loss, "
+ "propagate or hide corruption, or other serious "
+ "problems. Only has an effect during recovery."),
+ GUC_NOT_IN_SAMPLE
+ },
+ &ignore_invalid_pages,
+ false,
+ NULL, NULL, NULL
+ },
{
{"full_page_writes", PGC_SIGHUP, WAL_SETTINGS,
gettext_noop("Writes full pages to WAL when first modified after a checkpoint."),