block: Add error handling to bdrv_invalidate_cache()

If it returns an error, the migrated VM will not be started, but qemu
exits with an error message.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Benoit Canet <benoit@irqsave.net>

1 files changed, 7 insertions, 1 deletions

diff --git a/migration.c b/migration.c
index 00f465ea46..e0e24d42c7 100644
--- a/migration.c
+++ b/migration.c
@@ -101,6 +101,7 @@ void qemu_start_incoming_migration(const char *uri, Error **errp)
 static void process_incoming_migration_co(void *opaque)
 {
     QEMUFile *f = opaque;
+    Error *local_err = NULL;
     int ret;
 
     ret = qemu_loadvm_state(f);
@@ -115,7 +116,12 @@ static void process_incoming_migration_co(void *opaque)
 
     bdrv_clear_incoming_migration_all();
     /* Make sure all file formats flush their mutable metadata */
-    bdrv_invalidate_cache_all();
+    bdrv_invalidate_cache_all(&local_err);
+    if (local_err) {
+        qerror_report_err(local_err);
+        error_free(local_err);
+        exit(EXIT_FAILURE);
+    }
 
     if (autostart) {
         vm_start();