[Qemu-block] [PATCH 06/14] block: Set "share-rw" flag for incoming migration

[Fam Zheng]

In this way the source side QEMU is writing to the image. We need to
open it, so share-rw is required.

Signed-off-by: Fam Zheng <address@hidden>
---
 blockdev.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/blockdev.c b/blockdev.c
index 9992c5d..230c7c1 100644
--- a/blockdev.c
+++ b/blockdev.c
@@ -576,7 +576,7 @@ static BlockBackend *blockdev_init(const char *file, QDict 
*bs_opts,
         assert((bdrv_flags & BDRV_O_CACHE_MASK) == 0);
 
         if (runstate_check(RUN_STATE_INMIGRATE)) {
-            bdrv_flags |= BDRV_O_INACTIVE;
+            bdrv_flags |= BDRV_O_INACTIVE | BDRV_O_SHARE_RW;
         }
 
         blk = blk_new_open(file, NULL, bs_opts, bdrv_flags, errp);
@@ -646,7 +646,7 @@ static BlockDriverState *bds_tree_init(QDict *bs_opts, 
Error **errp)
     qdict_set_default_str(bs_opts, BDRV_OPT_READ_ONLY, "off");
 
     if (runstate_check(RUN_STATE_INMIGRATE)) {
-        bdrv_flags |= BDRV_O_INACTIVE;
+        bdrv_flags |= BDRV_O_INACTIVE | BDRV_O_SHARE_RW;
     }
 
     return bdrv_open(NULL, NULL, bs_opts, bdrv_flags, errp);
-- 
2.7.4