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[libvirt] [PATCH v2 1/3] conf: Format numatune XML correctly while placement is none



setNumaParameters tunes the numa setting using cgroup, it's another
entry except libnuma/numad for numa tuning. And it doesn't set the
placement, and further more, the formating codes doesn't take this
into consideration.

How to reproduce:

conn = libvirt.open(None)
dom = conn.lookupByName('linux')
param = {'numa_nodeset': '0', 'numa_mode': 1}
dom.setNumaParameters(param, 2)

% virsh start linux
error: Failed to start domain rhel6.3rc
error: (domain_definition):8: error parsing attribute name
    <memory mode='preferred'   </numatune>
-------------------------------^
---
 src/conf/domain_conf.c |   17 ++++++++++-------
 1 files changed, 10 insertions(+), 7 deletions(-)

diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index 81c6308..c44d89d 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -12795,23 +12795,26 @@ virDomainDefFormatInternal(virDomainDefPtr def,
         const char *placement;
 
         mode = virDomainNumatuneMemModeTypeToString(def->numatune.memory.mode);
-        virBufferAsprintf(buf, "    <memory mode='%s' ", mode);
+        virBufferAsprintf(buf, "    <memory mode='%s'", mode);
 
-        if (def->numatune.memory.placement_mode ==
-            VIR_DOMAIN_NUMATUNE_MEM_PLACEMENT_MODE_STATIC) {
+        if (def->numatune.memory.nodemask) {
             nodemask = virDomainCpuSetFormat(def->numatune.memory.nodemask,
-                                         VIR_DOMAIN_CPUMASK_LEN);
+                                             VIR_DOMAIN_CPUMASK_LEN);
             if (nodemask == NULL) {
                 virDomainReportError(VIR_ERR_INTERNAL_ERROR, "%s",
                                      _("failed to format nodeset for "
                                        "NUMA memory tuning"));
                 goto cleanup;
             }
-            virBufferAsprintf(buf, "nodeset='%s'/>\n", nodemask);
+            virBufferAsprintf(buf, " nodeset='%s'/>\n", nodemask);
             VIR_FREE(nodemask);
-        } else if (def->numatune.memory.placement_mode) {
+        } else if (def->numatune.memory.placement_mode ==
+            VIR_DOMAIN_NUMATUNE_MEM_PLACEMENT_MODE_AUTO) {
             placement = virDomainNumatuneMemPlacementModeTypeToString(def->numatune.memory.placement_mode);
-            virBufferAsprintf(buf, "placement='%s'/>\n", placement);
+            virBufferAsprintf(buf, " placement='%s'/>\n", placement);
+        } else {
+            /* Should not hit here. */
+            virBufferAddLit(buf, "/>\n");
         }
         virBufferAddLit(buf, "  </numatune>\n");
     }
-- 
1.7.7.3


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