In XML format, by definition, order of fields should not matter, so
order of parsing the elements doesn't affect the end result. When
specifying guest NUMA cells, we depend only on the order of the 'cell'
elements. With this patch all older domain XMLs are parsed as before,
but with the 'id' attribute they are parsed and formatted according to
that field. This will be useful when we have tuning settings for
particular guest NUMA node.
Signed-off-by: Martin Kletzander mklet...@redhat.com
---
docs/formatdomain.html.in | 17 +
docs/schemas/domaincommon.rng | 5 +++
src/conf/cpu_conf.c| 41 +++---
src/conf/cpu_conf.h| 3 +-
src/qemu/qemu_command.c| 2 +-
tests/qemuxml2argvdata/qemuxml2argv-cpu-numa1.xml | 6 ++--
tests/qemuxml2argvdata/qemuxml2argv-cpu-numa2.xml | 6 ++--
tests/qemuxml2argvdata/qemuxml2argv-cpu-numa3.xml | 25 +
tests/qemuxml2argvtest.c | 1 +
.../qemuxml2xmlout-cpu-numa1.xml | 28 +++
.../qemuxml2xmlout-cpu-numa2.xml | 28 +++
tests/qemuxml2xmltest.c| 3 ++
12 files changed, 145 insertions(+), 20 deletions(-)
create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-cpu-numa3.xml
create mode 100644 tests/qemuxml2xmloutdata/qemuxml2xmlout-cpu-numa1.xml
create mode 100644 tests/qemuxml2xmloutdata/qemuxml2xmlout-cpu-numa2.xml
diff --git a/docs/formatdomain.html.in b/docs/formatdomain.html.in
index b69da4c..9f1082b 100644
--- a/docs/formatdomain.html.in
+++ b/docs/formatdomain.html.in
@@ -1030,8 +1030,8 @@
lt;cpugt;
...
lt;numagt;
- lt;cell cpus='0-3' memory='512000'/gt;
- lt;cell cpus='4-7' memory='512000'/gt;
+ lt;cell id='0' cpus='0-3' memory='512000'/gt;
+ lt;cell id='1' cpus='4-7' memory='512000'/gt;
lt;/numagt;
...
lt;/cpugt;
@@ -1039,10 +1039,15 @@
p
Each codecell/code element specifies a NUMA cell or a NUMA node.
- codecpus/code specifies the CPU or range of CPUs that are part of
- the node. codememory/code specifies the node memory in kibibytes
- (i.e. blocks of 1024 bytes). Each cell or node is assigned cellid
- or nodeid in the increasing order starting from 0.
+ codecpus/code specifies the CPU or range of CPUs that are
+ part of the node. codememory/code specifies the node memory
+ in kibibytes (i.e. blocks of 1024 bytes).
+ span class=sinceSince 1.2.7/span all cells should
+ have codeid/code attribute in case referring to some cell is
+ necessary in the code, otherwise the cells are
+ assigned codeid/codes in the increasing order starting from
+ 0. Mixing cells with and without the codeid/code attribute
+ is not recommended as it may result in unwanted behaviour.
/p
p
diff --git a/docs/schemas/domaincommon.rng b/docs/schemas/domaincommon.rng
index 7be028d..155a33e 100644
--- a/docs/schemas/domaincommon.rng
+++ b/docs/schemas/domaincommon.rng
@@ -3902,6 +3902,11 @@
define name=numaCell
element name=cell
+ optional
+attribute name=id
+ ref name=unsignedInt/
+/attribute
+ /optional
attribute name=cpus
ref name=cpuset/
/attribute
diff --git a/src/conf/cpu_conf.c b/src/conf/cpu_conf.c
index 811893d..5003cf1 100644
--- a/src/conf/cpu_conf.c
+++ b/src/conf/cpu_conf.c
@@ -152,7 +152,6 @@ virCPUDefCopy(const virCPUDef *cpu)
copy-ncells_max = copy-ncells = cpu-ncells;
for (i = 0; i cpu-ncells; i++) {
-copy-cells[i].cellid = cpu-cells[i].cellid;
copy-cells[i].mem = cpu-cells[i].mem;
copy-cells[i].cpumask = virBitmapNewCopy(cpu-cells[i].cpumask);
@@ -438,17 +437,48 @@ virCPUDefParseXML(xmlNodePtr node,
for (i = 0; i n; i++) {
char *cpus, *memory;
int ret, ncpus = 0;
+unsigned int cur_cell;
+char *tmp = NULL;
+
+tmp = virXMLPropString(nodes[i], id);
+if (!tmp) {
+cur_cell = i;
+} else {
+ret = virStrToLong_ui(tmp, NULL, 10, cur_cell);
+if (ret == -1) {
+virReportError(VIR_ERR_XML_ERROR,
+ _(Invalid 'id' attribute in NUMA cell:
%s),
+ tmp);
+VIR_FREE(tmp);
+goto error;
+}
+VIR_FREE(tmp);
+}
+
+if (cur_cell = n) {
+virReportError(VIR_ERR_XML_ERROR, %s,
+ _(Exactly one 'cell' element per guest
+ NUMA cell allowed, non-contiguous ranges or
+ ranges not starting from 0 are not
allowed));
+goto
