+
static void bdrv_set_dirty(BlockDriverState *bs, int64_t cur_sector,
int nr_sectors)
{
diff --git a/blockdev.c b/blockdev.c
index 3f41e82..83d0608 100644
--- a/blockdev.c
+++ b/blockdev.c
@@ -2116,6 +2116,37 @@ void qmp_block_dirty_bitmap_disable(const char
*node, const char *name,
aio_context_release(aio_context);
}
+/**
+ * Completely clear a bitmap, for the purposes of synchronizing a bitmap
+ * immediately after a full backup operation.
+ */
+void qmp_block_dirty_bitmap_clear(const char *node, const char *name,
+ Error **errp)
+{
+ AioContext *aio_context;
+ BdrvDirtyBitmap *bitmap;
+ BlockDriverState *bs;
+
+ bitmap = block_dirty_bitmap_lookup(node, name, &bs, errp);
+ if (!bitmap) {
+ return;
+ }
+
+ aio_context = bdrv_get_aio_context(bs);
+ aio_context_acquire(aio_context);
+
+ if (bdrv_dirty_bitmap_frozen(bitmap)) {
+ error_setg(errp,
+ "Bitmap '%s' is currently frozen and cannot be
modified.\n",
+ name);
+ goto out;
+ }
+ bdrv_clear_dirty_bitmap(bitmap);
+
+ out:
+ aio_context_release(aio_context);
+}
+
int do_drive_del(Monitor *mon, const QDict *qdict, QObject **ret_data)
{
const char *id = qdict_get_str(qdict, "id");
diff --git a/include/block/block.h b/include/block/block.h
index 8589e77..8916ecd 100644
--- a/include/block/block.h
+++ b/include/block/block.h
@@ -467,6 +467,7 @@ void bdrv_set_dirty_bitmap(BlockDriverState *bs,
BdrvDirtyBitmap *bitmap,
int64_t cur_sector, int nr_sectors);
void bdrv_reset_dirty_bitmap(BlockDriverState *bs, BdrvDirtyBitmap
*bitmap,
int64_t cur_sector, int nr_sectors);
+void bdrv_clear_dirty_bitmap(BdrvDirtyBitmap *bitmap);
void bdrv_dirty_iter_init(BlockDriverState *bs,
BdrvDirtyBitmap *bitmap, struct
HBitmapIter *hbi);
void bdrv_set_dirty_iter(struct HBitmapIter *hbi, int64_t offset);
diff --git a/qapi/block-core.json b/qapi/block-core.json
index 9c5a99c..702b76a 100644
--- a/qapi/block-core.json
+++ b/qapi/block-core.json
@@ -1050,6 +1050,20 @@
'data': 'BlockDirtyBitmap' }
##
+# @block-dirty-bitmap-clear
+#
+# Clear (reset) a dirty bitmap on the device
+#
+# Returns: nothing on success
+# If @node is not a valid block device, DeviceNotFound
+# If @name is not found, GenericError with an explanation
+#
+# Since 2.3
+##
+{ 'command': 'block-dirty-bitmap-clear',
+ 'data': 'BlockDirtyBitmap' }
+
+##
# @block_set_io_throttle:
#
# Change I/O throttle limits for a block drive.
diff --git a/qmp-commands.hx b/qmp-commands.hx
index 5aa3845..e1d96cd 100644
--- a/qmp-commands.hx
+++ b/qmp-commands.hx
@@ -1264,6 +1264,11 @@ EQMP
.args_type = "node:B,name:s",
.mhandler.cmd_new =
qmp_marshal_input_block_dirty_bitmap_disable,
},
+ {
+ .name = "block-dirty-bitmap-clear",
+ .args_type = "node:B,name:s",
+ .mhandler.cmd_new = qmp_marshal_input_block_dirty_bitmap_clear,
+ },
SQMP
@@ -1303,6 +1308,25 @@ Example:
"name":
"bitmap0" } }
<- { "return": {} }
+block-dirty-bitmap-clear
+-------------------------