[PATCH 6/7] qemu: monitor: Extract whether qcow2 image uses extended L2 allocation data

[Peter Krempa]

In order to be able to propagate image configuration to newly formatted
images we need to be able to query it.

Signed-off-by: Peter Krempa <pkrempa at redhat.com>
---
 src/qemu/qemu_monitor.h      |  3 +++
 src/qemu/qemu_monitor_json.c | 10 +++++++---
 2 files changed, 10 insertions(+), 3 deletions(-)

diff --git a/src/qemu/qemu_monitor.h b/src/qemu/qemu_monitor.h
index 29746f0b8e..850e01f026 100644
--- a/src/qemu/qemu_monitor.h
+++ b/src/qemu/qemu_monitor.h
@@ -784,6 +784,9 @@ struct _qemuBlockNamedNodeData {

     /* image version */
     bool qcow2v2;
+
+    /* qcow2 subcluster allocation -> extended_l2 */
+    bool qcow2extendedL2;
 };

 GHashTable *
diff --git a/src/qemu/qemu_monitor_json.c b/src/qemu/qemu_monitor_json.c
index a3d6eca569..6eedc925c4 100644
--- a/src/qemu/qemu_monitor_json.c
+++ b/src/qemu/qemu_monitor_json.c
@@ -2806,9 +2806,13 @@ qemuMonitorJSONBlockGetNamedNodeDataWorker(size_t pos G_GNUC_UNUSED,
         STREQ_NULLABLE(virJSONValueObjectGetString(format_specific, "type"), "qcow2")) {
         virJSONValue *qcow2props = virJSONValueObjectGetObject(format_specific, "data");

-        if (qcow2props &&
-            STREQ_NULLABLE(virJSONValueObjectGetString(qcow2props, "compat"), "0.10"))
-            ent->qcow2v2 = true;
+        if (qcow2props) {
+            if (STREQ_NULLABLE(virJSONValueObjectGetString(qcow2props, "compat"), "0.10"))
+                ent->qcow2v2 = true;
+
+            ignore_value(virJSONValueObjectGetBoolean(qcow2props, "extended-l2",
+                                                      &ent->qcow2extendedL2));
+        }
     }

     if (virHashAddEntry(nodes, nodename, ent) < 0)
-- 
2.31.1