From: Benoît Canet <benoit.canet@gmail.com>
Date: Fri, 23 Mar 2012 07:36:50 +0000 (+0100)
Subject: blockdev: open images with BDRV_O_INCOMING on incoming live migration
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=ed9d4205cecb2f6c06821cb9d8fe9e1ca5f9b8ab;p=qemu.git

blockdev: open images with BDRV_O_INCOMING on incoming live migration

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.canet@gmail.com>
Reviewed-by: Stefan Hajnoczi <stefanha@gmail.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
---

diff --git a/blockdev.c b/blockdev.c
index 4d17486e31..0c2440e249 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;