@@ -1755,8 +1755,20 @@ static int64_t qcow2_vm_state_offset(BDRVQcowState *s)
static int qcow2_get_info(BlockDriverState *bs, BlockDriverInfo *bdi)
{
BDRVQcowState *s = bs->opaque;
+
bdi->cluster_size = s->cluster_size;
bdi->vm_state_offset = qcow2_vm_state_offset(s);
+
+ bdi->format_specific = g_new0(ImageInfoSpecific, 1);
+ bdi->format_specific->kind = IMAGE_INFO_SPECIFIC_KIND_QCOW2;
+ bdi->format_specific->qcow2 = g_new0(ImageInfoSpecificQCow2, 1);
+ if (s->qcow_version == 2) {
+ bdi->format_specific->qcow2->compat = g_strdup("0.10");
+ } else if (s->qcow_version == 3) {
+ bdi->format_specific->qcow2->compat = g_strdup("1.1");
+ bdi->format_specific->qcow2->lazy_refcounts = s->use_lazy_refcounts;
+ bdi->format_specific->qcow2->has_lazy_refcounts = true;
+ }
return 0;
}
@@ -210,6 +210,21 @@
'vm-clock-sec': 'int', 'vm-clock-nsec': 'int' } }
##
+# @ImageInfoSpecificQCow2:
+#
+# @compat: compatibility level
+#
+# @lazy-refcounts: #optional on or off; only valid for compat >= 1.1
+#
+# Since: 1.7
+##
+{ 'type': 'ImageInfoSpecificQCow2',
+ 'data': {
+ 'compat': 'str',
+ '*lazy-refcounts': 'bool'
+ } }
+
+##
# @ImageInfoSpecific:
#
# A discriminated record of image format specific information structures.
@@ -219,6 +234,7 @@
{ 'union': 'ImageInfoSpecific',
'data': {
+ 'qcow2': 'ImageInfoSpecificQCow2'
} }
##
Add a new ImageInfoSpecificQCow2 type as a subtype of ImageInfoSpecific. This contains the compatibility level as a string and an optional lazy_refcounts boolean (optional means mandatory for compat >= 1.1 and not available for compat == 0.10). In qcow2_get_info, fill the BlockDriverInfo.format_specific field with that information. Signed-off-by: Max Reitz <mreitz@redhat.com> --- block/qcow2.c | 12 ++++++++++++ qapi-schema.json | 16 ++++++++++++++++ 2 files changed, 28 insertions(+)