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[libvirt] [PATCH v6 02/13] qemu: Detect support for vxhs



Using the query-qmp-schema introspection - look for the 'vxhs'
blockdevOptions type

Signed-off-by: John Ferlan <jferlan redhat com>
---

 This is new from v5, this is the way I figured out in order to
 use the query-qmp-schema in order to determine if 'vxhs' was
 possible. It sets the libvirt capability.

 src/qemu/qemu_capabilities.c                      | 4 ++++
 src/qemu/qemu_capabilities.h                      | 3 +++
 tests/qemucapabilitiesdata/caps_2.10.0.x86_64.xml | 1 +
 3 files changed, 8 insertions(+)

diff --git a/src/qemu/qemu_capabilities.c b/src/qemu/qemu_capabilities.c
index e7ea6f4..173bcf3 100644
--- a/src/qemu/qemu_capabilities.c
+++ b/src/qemu/qemu_capabilities.c
@@ -439,6 +439,9 @@ VIR_ENUM_IMPL(virQEMUCaps, QEMU_CAPS_LAST,
               "virtio-net.tx_queue_size",
               "chardev-reconnect",
               "virtio-gpu.max_outputs",
+
+              /* 270 */
+              "vxhs",
     );
 
 
@@ -1811,6 +1814,7 @@ static struct virQEMUCapsStringFlags virQEMUCapsObjectPropsIntelIOMMU[] = {
 static struct virQEMUCapsStringFlags virQEMUCapsQMPSchemaQueries[] = {
     { "blockdev-add/arg-type/options/+gluster/debug-level", QEMU_CAPS_GLUSTER_DEBUG_LEVEL},
     { "blockdev-add/arg-type/+gluster/debug", QEMU_CAPS_GLUSTER_DEBUG_LEVEL},
+    { "blockdev-add/arg-type/+vxhs", QEMU_CAPS_VXHS},
 };
 
 struct virQEMUCapsObjectTypeProps {
diff --git a/src/qemu/qemu_capabilities.h b/src/qemu/qemu_capabilities.h
index f32687d..f512775 100644
--- a/src/qemu/qemu_capabilities.h
+++ b/src/qemu/qemu_capabilities.h
@@ -426,6 +426,9 @@ typedef enum {
     QEMU_CAPS_CHARDEV_RECONNECT, /* -chardev reconnect */
     QEMU_CAPS_VIRTIO_GPU_MAX_OUTPUTS, /* -device virtio-(vga|gpu-*),max-outputs= */
 
+    /* 270 */
+    QEMU_CAPS_VXHS, /* -drive file.driver=vxhs via query-qmp-schema */
+
     QEMU_CAPS_LAST /* this must always be the last item */
 } virQEMUCapsFlags;
 
diff --git a/tests/qemucapabilitiesdata/caps_2.10.0.x86_64.xml b/tests/qemucapabilitiesdata/caps_2.10.0.x86_64.xml
index ca0a146..057ce27 100644
--- a/tests/qemucapabilitiesdata/caps_2.10.0.x86_64.xml
+++ b/tests/qemucapabilitiesdata/caps_2.10.0.x86_64.xml
@@ -215,6 +215,7 @@
   <flag name='virtio-net.tx_queue_size'/>
   <flag name='chardev-reconnect'/>
   <flag name='virtio-gpu.max_outputs'/>
+  <flag name='vxhs'/>
   <version>2009094</version>
   <kvmVersion>0</kvmVersion>
   <package> (v2.10.0-rc4-dirty)</package>
-- 
2.9.5


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