From ecbd9793ceb09c1dbbe2e37fd132aa428eb2b4fb Mon Sep 17 00:00:00 2001
From: John Snow <jsnow@redhat.com>
Date: Wed, 18 Jul 2018 22:54:41 +0200
Subject: [PATCH 56/89] qapi: add disabled parameter to block-dirty-bitmap-add

RH-Author: John Snow <jsnow@redhat.com>
Message-id: <20180718225511.14878-6-jsnow@redhat.com>
Patchwork-id: 81404
O-Subject: [RHEL-7.6 qemu-kvm-rhev PATCH 05/35] qapi: add disabled parameter to block-dirty-bitmap-add
Bugzilla: 1207657
RH-Acked-by: Eric Blake <eblake@redhat.com>
RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
RH-Acked-by: Fam Zheng <famz@redhat.com>

From: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>

This is needed, for example, to create a new bitmap and merge several
disabled bitmaps into a new one. Without this flag we will have to
put block-dirty-bitmap-add and block-dirty-bitmap-disable into one
transaction.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Jeff Cody <jcody@redhat.com>
Message-id: 20180606182449.1607-6-jsnow@redhat.com
Signed-off-by: John Snow <jsnow@redhat.com>
(cherry picked from commit a6e2ca5f6521553681ae136578ec1cb67e1a7973)
Signed-off-by: John Snow <jsnow@redhat.com>
Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
---
 blockdev.c           | 10 ++++++++++
 qapi/block-core.json |  6 +++++-
 2 files changed, 15 insertions(+), 1 deletion(-)

diff --git a/blockdev.c b/blockdev.c
index 3728082..9beef10 100644
--- a/blockdev.c
+++ b/blockdev.c
@@ -2115,6 +2115,7 @@ static void block_dirty_bitmap_add_prepare(BlkActionState *common,
                                action->has_granularity, action->granularity,
                                action->has_persistent, action->persistent,
                                action->has_autoload, action->autoload,
+                               action->has_x_disabled, action->x_disabled,
                                &local_err);
 
     if (!local_err) {
@@ -2922,6 +2923,7 @@ 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,
+                                bool has_disabled, bool disabled,
                                 Error **errp)
 {
     BlockDriverState *bs;
@@ -2956,6 +2958,10 @@ void qmp_block_dirty_bitmap_add(const char *node, const char *name,
         warn_report("Autoload option is deprecated and its value is ignored");
     }
 
+    if (!has_disabled) {
+        disabled = false;
+    }
+
     if (persistent &&
         !bdrv_can_store_new_dirty_bitmap(bs, name, granularity, errp))
     {
@@ -2967,6 +2973,10 @@ void qmp_block_dirty_bitmap_add(const char *node, const char *name,
         return;
     }
 
+    if (disabled) {
+        bdrv_disable_dirty_bitmap(bitmap);
+    }
+
     bdrv_dirty_bitmap_set_persistance(bitmap, persistent);
 }
 
diff --git a/qapi/block-core.json b/qapi/block-core.json
index 4e1fda3..27ed91b 100644
--- a/qapi/block-core.json
+++ b/qapi/block-core.json
@@ -1734,11 +1734,15 @@
 #            Currently, all dirty tracking bitmaps are loaded from Qcow2 on
 #            open.
 #
+# @x-disabled: the bitmap is created in the disabled state, which means that
+#              it will not track drive changes. The bitmap may be enabled with
+#              x-block-dirty-bitmap-enable. Default is false. (Since: 3.0)
+#
 # Since: 2.4
 ##
 { 'struct': 'BlockDirtyBitmapAdd',
   'data': { 'node': 'str', 'name': 'str', '*granularity': 'uint32',
-            '*persistent': 'bool', '*autoload': 'bool' } }
+            '*persistent': 'bool', '*autoload': 'bool', '*x-disabled': 'bool' } }
 
 ##
 # @BlockDirtyBitmapMerge:
-- 
1.8.3.1