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 <vsement...@virtuozzo.com> --- qapi/block-core.json | 6 +++++- blockdev.c | 10 ++++++++++ 2 files changed, 15 insertions(+), 1 deletion(-) diff --git a/qapi/block-core.json b/qapi/block-core.json index 9f9cfa0a44..de8041d11d 100644 --- a/qapi/block-core.json +++ b/qapi/block-core.json @@ -1597,11 +1597,15 @@ # Currently, all dirty tracking bitmaps are loaded from Qcow2 on # open. # +# @disabled: bitmap is created in disabled state, which means that it will not +# track drive changes. The bitmap may be enabled with +# block-dirty-bitmap-enable. Default is false. (Since: 2.12) +# # Since: 2.4 ## { 'struct': 'BlockDirtyBitmapAdd', 'data': { 'node': 'str', 'name': 'str', '*granularity': 'uint32', - '*persistent': 'bool', '*autoload': 'bool' } } + '*persistent': 'bool', '*autoload': 'bool', '*disabled': 'bool' } } ## # @BlockDirtyBitmapMerge: diff --git a/blockdev.c b/blockdev.c index 1650c31c87..444fccaab4 100644 --- a/blockdev.c +++ b/blockdev.c @@ -1983,6 +1983,7 @@ 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_disabled, action->disabled, &local_err); if (!local_err) { @@ -2788,6 +2789,7 @@ 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; @@ -2822,6 +2824,10 @@ void qmp_block_dirty_bitmap_add(const char *node, const char *name, warn_report("Autoload option is deprected and its value is ignored"); } + if (!has_disabled) { + disabled = false; + } + if (persistent && !bdrv_can_store_new_dirty_bitmap(bs, name, granularity, errp)) { @@ -2833,6 +2839,10 @@ 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); } -- 2.11.1