[libvirt] [PATCH v8 01/11] qemu: Detect support for vxhs

Using the query-qmp-schema introspection - look for the 'vxhs' blockdevOptions type. NB: This is a "best effort" type situation as there is not a mechanism to determine whether the running QEMU has been built with '--enable-vxhs'. All we can do is check if the option to use vxhs for a blockdev-add exists in the command infrastructure which does not take that into account when building its table of commands and options. Signed-off-by: John Ferlan <jferlan(a)redhat.com&gt; --- 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 c690cb349..2486d2015 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", ); @@ -1810,6 +1813,7 @@ 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 85c390abf..2a0e9c743 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 604921122..8a31431c0 100644 --- a/tests/qemucapabilitiesdata/caps_2.10.0.x86_64.xml +++ b/tests/qemucapabilitiesdata/caps_2.10.0.x86_64.xml @@ -222,6 +222,7 @@ <flag name='virtio-net.tx_queue_size'/> <flag name='chardev-reconnect'/> <flag name='virtio-gpu.max_outputs'/> + <flag name='vxhs'/> <version>2010000</version> <kvmVersion>0</kvmVersion> <package> (v2.10.0)</package> -- 2.13.5