Open 2.0 development tree

[qemu.git] / blockdev.c

diff --git a/blockdev.c b/blockdev.c
index 86e6bffdc493a1113c0984a7e9d4c35b87ddcc2f..44755e1a5d2f298d17073d5c4b19acb844bb2793 100644 (file)
--- a/blockdev.c
+++ b/blockdev.c
@@ -47,7 +47,6 @@
 #include "sysemu/arch_init.h"
 
 static QTAILQ_HEAD(drivelist, DriveInfo) drives = QTAILQ_HEAD_INITIALIZER(drives);
-extern QemuOptsList qemu_common_drive_opts;
 
 static const char *const if_name[IF_COUNT] = {
     [IF_NONE] = "none",
@@ -2022,6 +2021,9 @@ void qmp_drive_mirror(const char *device, const char *target,
     if (!source && sync == MIRROR_SYNC_MODE_TOP) {
         sync = MIRROR_SYNC_MODE_FULL;
     }
+    if (sync == MIRROR_SYNC_MODE_NONE) {
+        source = bs;
+    }
 
     size = bdrv_getlength(bs);
     if (size < 0) {
@@ -2029,7 +2031,9 @@ void qmp_drive_mirror(const char *device, const char *target,
         return;
     }
 
-    if (sync == MIRROR_SYNC_MODE_FULL && mode != NEW_IMAGE_MODE_EXISTING) {
+    if ((sync == MIRROR_SYNC_MODE_FULL || !source)
+        && mode != NEW_IMAGE_MODE_EXISTING)
+    {
         /* create new image w/o backing file */
         assert(format && drv);
         bdrv_img_create(target, format,