[Qemu-devel] [PATCH] migration: invalidate cache before source start

[Vladimir Sementsov-Ogievskiy]

Invalidate cache before source start in case of failed migration.

Signed-off-by: Vladimir Sementsov-Ogievskiy <address@hidden>
---

 migration/migration.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/migration/migration.c b/migration/migration.c
index 1e99ec9b7e..8f39e0dc02 100644
--- a/migration/migration.c
+++ b/migration/migration.c
@@ -2806,7 +2806,14 @@ static void migration_iteration_finish(MigrationState *s)
     case MIGRATION_STATUS_FAILED:
     case MIGRATION_STATUS_CANCELLED:
         if (s->vm_was_running) {
-            vm_start();
+            Error *local_err = NULL;
+            bdrv_invalidate_cache_all(&local_err);
+            if (local_err) {
+                error_reportf_err(local_err, "Can't invalidate disks before "
+                                  "source vm start");
+            } else {
+                vm_start();
+            }
         } else {
             if (runstate_check(RUN_STATE_FINISH_MIGRATE)) {
                 runstate_set(RUN_STATE_POSTMIGRATE);
-- 
2.11.1