qcow2: Prepare l2_allocate() for adding L2 slice support

[qemu.git] / blockdev.c

diff --git a/blockdev.c b/blockdev.c
index c487cf0e4b72fa75c4bc4b97773e4de0e6e5875a..3fb1ca803c58653dee99bb4a0fed97380c4f88f9 100644 (file)
--- a/blockdev.c
+++ b/blockdev.c
@@ -40,11 +40,13 @@
 #include "qemu/error-report.h"
 #include "qemu/option.h"
 #include "qemu/config-file.h"
+#include "qapi/qmp/qdict.h"
 #include "qapi/qmp/qnum.h"
 #include "qapi/qmp/qstring.h"
 #include "qapi-visit.h"
 #include "qapi/error.h"
 #include "qapi/qmp/qerror.h"
+#include "qapi/qmp/qlist.h"
 #include "qapi/qobject-output-visitor.h"
 #include "sysemu/sysemu.h"
 #include "sysemu/iothread.h"
@@ -2823,14 +2825,9 @@ 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 (has_autoload) {
+        warn_report("Autoload option is deprecated and its value is ignored");
     }
 
     if (persistent &&
@@ -2845,7 +2842,6 @@ void qmp_block_dirty_bitmap_add(const char *node, const char *name,
     }
 
     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,
@@ -3567,6 +3563,11 @@ void qmp_drive_mirror(DriveMirror *arg, Error **errp)
         return;
     }
 
+    /* Early check to avoid creating target */
+    if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_MIRROR_SOURCE, errp)) {
+        return;
+    }
+
     aio_context = bdrv_get_aio_context(bs);
     aio_context_acquire(aio_context);