Fix bug introduced by the recent patch to check that the checkpoint redo

location read from backup label file can be found: wasShutdown was set
incorrectly when a backup label file was found.

Jeff Davis, with a little tweaking by me.

diff --git a/src/backend/access/transam/xlog.c b/src/backend/access/transam/xlog.c
index 7708b93fffbe1e60dd9b78f5c0111927be8ba8f3..70f4cc5d2e3a2ed58a4a7c10d181ac6349690809 100644 (file)
--- a/src/backend/access/transam/xlog.c
+++ b/src/backend/access/transam/xlog.c
@@ -5864,6 +5864,7 @@ StartupXLOG(void)
                if (record != NULL)
                {
                        memcpy(&checkPoint, XLogRecGetData(record), sizeof(CheckPoint));
+                       wasShutdown = (record->xl_info == XLOG_CHECKPOINT_SHUTDOWN);
                        ereport(DEBUG1,
                                        (errmsg("checkpoint record is at %X/%X",
                                                        checkPointLoc.xlogid, checkPointLoc.xrecoff)));
@@ -5888,6 +5889,7 @@ StartupXLOG(void)
                        ereport(FATAL,
                                        (errmsg("could not locate required checkpoint record"),
                                         errhint("If you are not restoring from a backup, try removing the file \"%s/backup_label\".", DataDir)));
+                       wasShutdown = false; /* keep compiler quiet */
                }
                /* set flag to delete it later */
                haveBackupLabel = true;
@@ -5932,10 +5934,10 @@ StartupXLOG(void)
                                         (errmsg("could not locate a valid checkpoint record")));
                }
                memcpy(&checkPoint, XLogRecGetData(record), sizeof(CheckPoint));
+               wasShutdown = (record->xl_info == XLOG_CHECKPOINT_SHUTDOWN);
        }
 
        LastRec = RecPtr = checkPointLoc;
-       wasShutdown = (record->xl_info == XLOG_CHECKPOINT_SHUTDOWN);
 
        ereport(DEBUG1,
                        (errmsg("redo record is at %X/%X; shutdown %s",