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[libvirt] [PATCH RFC]:tolerate numa_node_size64 < 0 because nodeid might start from 1 instead of 0



  In nodeGetFreeMemory/nodeGetCellsFreeMemory, they will calculate the free
memory of every nodes. They assumed that nodeid of NUMA machine must be
continuous and start from 0.
But here is a counter-example:

# numactl -H
available: 1 nodes (1)
node 1 cpus: 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
node 1 size: 16340 MB
node 1 free: 11065 MB

test results before this patch:
#virsh freecell
error: internal error Failed to query NUMA free memory
#virsh freecell 0
error: internal error Failed to query NUMA free memory for node: 0

after this patch:
#  virsh freecell
Total: 15772580 KiB
# virsh freecell 0
0: 0 KiB

--- libvirt/src/nodeinfo.c.orig 2013-07-08 04:25:11.970351101 -0500
+++ libvirt/src/nodeinfo.c      2013-07-08 09:00:30.834471495 -0500
@@ -1717,10 +1717,6 @@ nodeGetCellsFreeMemory(unsigned long lon
     for (numCells = 0, n = startCell; n <= lastCell; n++) {
         long long mem;
         if (numa_node_size64(n, &mem) < 0) {
-            virReportError(VIR_ERR_INTERNAL_ERROR,
-                           _("Failed to query NUMA free memory for node: %d"),
-                           n);
-            goto cleanup;
         }
         freeMems[numCells++] = mem;
     }
@@ -1743,9 +1739,6 @@ nodeGetFreeMemory(void)
     for (n = 0; n <= numa_max_node(); n++) {
         long long mem;
         if (numa_node_size64(n, &mem) < 0) {
-            virReportError(VIR_ERR_INTERNAL_ERROR,
-                           "%s", _("Failed to query NUMA free memory"));
-            goto cleanup;
         }
         freeMem += mem;
     }


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