[Qemu-devel] [PATCH v22 24/30] qmp: add autoload parameter to block-dirty-bitmap-add

[Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>]

Optional. Default is false.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Signed-off-by: Denis V. Lunev <den@openvz.org>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
---
 blockdev.c           | 18 ++++++++++++++++--
 qapi/block-core.json |  6 +++++-
 2 files changed, 21 insertions(+), 3 deletions(-)

diff --git a/blockdev.c b/blockdev.c
index 125acabc07..4bb7033994 100644
--- a/blockdev.c
+++ b/blockdev.c
@@ -1974,6 +1974,7 @@ static void block_dirty_bitmap_add_prepare(BlkActionState *common,
     qmp_block_dirty_bitmap_add(action->node, action->name,
                                action->has_granularity, action->granularity,
                                action->has_persistent, action->persistent,
+                               action->has_autoload, action->autoload,
                                &local_err);
 
     if (!local_err) {
@@ -2722,6 +2723,7 @@ out:
 void qmp_block_dirty_bitmap_add(const char *node, const char *name,
                                 bool has_granularity, uint32_t granularity,
                                 bool has_persistent, bool persistent,
+                                bool has_autoload, bool autoload,
                                 Error **errp)
 {
     BlockDriverState *bs;
@@ -2751,6 +2753,15 @@ void qmp_block_dirty_bitmap_add(const char *node, const char *name,
     if (!has_persistent) {
         persistent = false;
     }
+    if (!has_autoload) {
+        autoload = false;
+    }
+
+    if (has_autoload && !persistent) {
+        error_setg(errp, "Autoload flag must be used only for persistent "
+                         "bitmaps");
+        return;
+    }
 
     if (persistent &&
         !bdrv_can_store_new_dirty_bitmap(bs, name, granularity, errp))
@@ -2759,9 +2770,12 @@ void qmp_block_dirty_bitmap_add(const char *node, const char *name,
     }
 
     bitmap = bdrv_create_dirty_bitmap(bs, granularity, name, errp);
-    if (bitmap != NULL) {
-        bdrv_dirty_bitmap_set_persistance(bitmap, persistent);
+    if (bitmap == NULL) {
+        return;
     }
+
+    bdrv_dirty_bitmap_set_persistance(bitmap, persistent);
+    bdrv_dirty_bitmap_set_autoload(bitmap, autoload);
 }
 
 void qmp_block_dirty_bitmap_remove(const char *node, const char *name,
diff --git a/qapi/block-core.json b/qapi/block-core.json
index 13f98ec146..5c42cc7790 100644
--- a/qapi/block-core.json
+++ b/qapi/block-core.json
@@ -1566,11 +1566,15 @@
 #              Qcow2 disks support persistent bitmaps. Default is false for
 #              block-dirty-bitmap-add. (Since: 2.10)
 #
+# @autoload: the bitmap will be automatically loaded when the image it is stored
+#            in is opened. This flag may only be specified for 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',
-            '*persistent': 'bool' } }
+            '*persistent': 'bool', '*autoload': 'bool' } }
 
 ##
 # @block-dirty-bitmap-add:
-- 
2.11.1