File bug-946224_pacemaker-cib-check-config-change.patch of Package pacemaker.9287

commit 9994854a4f1ed08f32dd660360efb9946a344dd3
Author: Gao,Yan <ygao@suse.com>
Date:   Wed Sep 23 15:48:14 2015 +0200

    Fix: cib: Check if the configuration changes with cib_config_changed() only for v1 diffs
    
    The cib_config_change() function only applies to v1 diffs. Previously,
    if cib was running in legacy mode while using v2 diff format, it would
    get incorrect result from the function and refuse to write back on-disk
    cib on the slave node.

diff --git a/cib/callbacks.c b/cib/callbacks.c
index 28844b8..5fe2107 100644
--- a/cib/callbacks.c
+++ b/cib/callbacks.c
@@ -1256,10 +1256,17 @@ cib_process_command(xmlNode * request, xmlNode ** reply, xmlNode ** cib_diff, gb
                             current_cib, &result_cib, cib_diff, &output);
 
         if (manage_counters == FALSE) {
+            int format = 1;
             /* Legacy code
              * If the diff is NULL at this point, its because nothing changed
              */
-            config_changed = cib_config_changed(NULL, NULL, cib_diff);
+            if (*cib_diff) {
+                crm_element_value_int(*cib_diff, "format", &format);
+            }
+
+            if (format == 1) {
+                config_changed = cib_config_changed(NULL, NULL, cib_diff);
+            }
         }
 
         /* Always write to disk for replace ops,
diff --git a/lib/cib/cib_ops.c b/lib/cib/cib_ops.c
index 8966ae2..c2f5736 100644
--- a/lib/cib/cib_ops.c
+++ b/lib/cib/cib_ops.c
@@ -610,6 +610,7 @@ cib_config_changed(xmlNode * last, xmlNode * next, xmlNode ** diff)
     int lpc = 0, max = 0;
     gboolean config_changes = FALSE;
     xmlXPathObject *xpathObj = NULL;
+    int format = 1;
 
     CRM_ASSERT(diff != NULL);
 
@@ -621,6 +622,10 @@ cib_config_changed(xmlNode * last, xmlNode * next, xmlNode ** diff)
         goto done;
     }
 
+    crm_element_value_int(*diff, "format", &format);
+    /* This function only applies to v1 diffs. */
+    CRM_LOG_ASSERT(format == 1);
+
     xpathObj = xpath_search(*diff, "//" XML_CIB_TAG_CONFIGURATION);
     if (numXpathResults(xpathObj) > 0) {
         config_changes = TRUE;