qmp: block-dirty-bitmap-remove: remove persistent

Remove persistent bitmap from the storage on block-dirty-bitmap-remove.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Message-id: 20170628120530.31251-30-vsementsov@virtuozzo.com
Signed-off-by: Max Reitz <mreitz@redhat.com>

blockdev.c

@@ -2771,6 +2771,7 @@ void qmp_block_dirty_bitmap_remove(const char *node, const char *name,
 {
     BlockDriverState *bs;
     BdrvDirtyBitmap *bitmap;
+    Error *local_err = NULL;
 
     bitmap = block_dirty_bitmap_lookup(node, name, &bs, errp);
     if (!bitmap || !bs) {
@@ -2783,6 +2784,15 @@ void qmp_block_dirty_bitmap_remove(const char *node, const char *name,
                    name);
         return;
     }
+
+    if (bdrv_dirty_bitmap_get_persistance(bitmap)) {
+        bdrv_remove_persistent_dirty_bitmap(bs, name, &local_err);
+        if (local_err != NULL) {
+            error_propagate(errp, local_err);
+            return;
+        }
+    }
+
     bdrv_dirty_bitmap_make_anon(bitmap);
     bdrv_release_dirty_bitmap(bs, bitmap);
 }

qapi/block-core.json

@@ -1593,7 +1593,8 @@
 # @block-dirty-bitmap-remove:
 #
 # Stop write tracking and remove the dirty bitmap that was created
-# with block-dirty-bitmap-add.
+# with block-dirty-bitmap-add. If the bitmap is persistent, remove it from its
+# storage too.
 #
 # Returns: nothing on success
 #          If @node is not a valid block device or node, DeviceNotFound