@@ -1982,6 +1982,7 @@ static void block_dirty_bitmap_add_prepare(BlkActionState *common,
/* AIO context taken and released within qmp_block_dirty_bitmap_add */
qmp_block_dirty_bitmap_add(action->node, action->name,
action->has_granularity, action->granularity,
+ action->has_persistent, action->persistent,
&local_err);
if (!local_err) {
@@ -2730,10 +2731,12 @@ out:
void qmp_block_dirty_bitmap_add(const char *node, const char *name,
bool has_granularity, uint32_t granularity,
+ bool has_persistent, bool persistent,
Error **errp)
{
AioContext *aio_context;
BlockDriverState *bs;
+ BdrvDirtyBitmap *bitmap;
if (!name || name[0] == '\0') {
error_setg(errp, "Bitmap name cannot be empty");
@@ -2759,7 +2762,20 @@ void qmp_block_dirty_bitmap_add(const char *node, const char *name,
granularity = bdrv_get_default_bitmap_granularity(bs);
}
- bdrv_create_dirty_bitmap(bs, granularity, name, errp);
+ if (!has_persistent) {
+ persistent = false;
+ }
+
+ if (persistent &&
+ !bdrv_can_store_new_dirty_bitmap(bs, name, granularity, errp))
+ {
+ goto out;
+ }
+
+ bitmap = bdrv_create_dirty_bitmap(bs, granularity, name, errp);
+ if (bitmap != NULL) {
+ bdrv_dirty_bitmap_set_persistance(bitmap, persistent);
+ }
out:
aio_context_release(aio_context);
@@ -1560,10 +1560,16 @@
# @granularity: the bitmap granularity, default is 64k for
# block-dirty-bitmap-add
#
+# @persistent: the bitmap is persistent, i.e. it will be saved to the
+# corresponding block device image file on its close. For now only
+# Qcow2 disks support persistent bitmaps. Default is false for
+# block-dirty-bitmap-add. (Since: 2.10)
+#
# Since: 2.4
##
{ 'struct': 'BlockDirtyBitmapAdd',
- 'data': { 'node': 'str', 'name': 'str', '*granularity': 'uint32' } }
+ 'data': { 'node': 'str', 'name': 'str', '*granularity': 'uint32',
+ '*persistent': 'bool' } }
##
# @block-dirty-bitmap-add: