[Qemu-devel] [PATCH 42/46] blockdev: open images with BDRV_O_INCOMING on incoming live migration

[Kevin Wolf]

From: Benoît Canet <benoit.ca...@gmail.com>

Open images with BDRV_O_INCOMING in order to inform block drivers
that an incoming live migration is coming.

Signed-off-by: Benoit Canet <benoit.ca...@gmail.com>
Reviewed-by: Stefan Hajnoczi <stefa...@gmail.com>
Signed-off-by: Kevin Wolf <kw...@redhat.com>
---
 blockdev.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/blockdev.c b/blockdev.c
index 4d17486..0c2440e 100644
--- a/blockdev.c
+++ b/blockdev.c
@@ -595,6 +595,10 @@ DriveInfo *drive_init(QemuOpts *opts, int default_to_scsi)
         bdrv_flags |= BDRV_O_COPY_ON_READ;
     }
 
+    if (runstate_check(RUN_STATE_INMIGRATE)) {
+        bdrv_flags |= BDRV_O_INCOMING;
+    }
+
     if (media == MEDIA_CDROM) {
         /* CDROM is fine for any interface, don't check.  */
         ro = 1;
-- 
1.7.6.5