Exclude additional directories and files in pgdata_exclude_dir[] and pgdata_exclude_files[]

Author: alubennikova

dir.c

@@ -20,18 +20,59 @@
 #include "pgut/pgut-port.h"
 #include "datapagemap.h"
 
-/* directory exclusion list for backup mode listing */
+/*
+ * The contents of these directories are removed or recreated during server
+ * start so they are not included in backups.  The directories themselves are
+ * kept and included as empty to preserve access permissions.
+ */
 const char *pgdata_exclude_dir[] =
 {
-	"pg_xlog",
-	"pg_stat_tmp",
-	"pgsql_tmp",
-	NULL,			/* pg_log will be set later */
-	NULL
+		"pg_xlog",
+       /*
+        * Skip temporary statistics files. PG_STAT_TMP_DIR must be skipped even
+        * when stats_temp_directory is set because PGSS_TEXT_FILE is always created
+        * there.
+        */
+        "pg_stat_tmp",
+        "pgsql_tmp",
+
+       /*
+        * It is generally not useful to backup the contents of this directory even
+        * if the intention is to restore to another master. See backup.sgml for a
+        * more detailed description.
+        */
+       "pg_replslot",
+
+       /* Contents removed on startup, see dsm_cleanup_for_mmap(). */
+       "pg_dynshmem",
+
+       /* Contents removed on startup, see AsyncShmemInit(). */
+       "pg_notify",
+
+       /*
+        * Old contents are loaded for possible debugging but are not required for
+        * normal operation, see OldSerXidInit().
+        */
+       "pg_serial",
+
+       /* Contents removed on startup, see DeleteAllExportedSnapshotFiles(). */
+       "pg_snapshots",
+
+       /* Contents zeroed on startup, see StartupSUBTRANS(). */
+       "pg_subtrans",
+
+       /* end of list */
+        NULL,                   /* pg_log will be set later */
+        NULL
 };
 
 static char *pgdata_exclude_files[] =
 {
+	/* Skip auto conf temporary file. */
+	"postgresql.auto.conf.tmp",
+
+	/* Skip current log file temporary file */
+	"current_logfiles.tmp",
 	"recovery.conf",
 	"postmaster.pid",
 	"postmaster.opts",