The migration thread runs outside the QEMU global mutex when possible.
Therefore we must notify migration state change *before* starting the
migration thread.
This allows registered listeners to act before live migration iterations
begin. Therefore they can get into a state that allows for live
migration. When the migration thread starts everything will be ready.
Signed-off-by: Stefan Hajnoczi <stefa...@redhat.com>
---
migration.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/migration.c b/migration.c
index 9f5a423..b4daf13 100644
--- a/migration.c
+++ b/migration.c
@@ -625,7 +625,9 @@ void migrate_fd_connect(MigrationState *s)
qemu_file_set_rate_limit(s->file,
s->bandwidth_limit / XFER_LIMIT_RATIO);
+ /* Notify before starting migration thread */
+ notifier_list_notify(&migration_state_notifiers, s);
+
qemu_thread_create(&s->thread, migration_thread, s,
QEMU_THREAD_JOINABLE);
- notifier_list_notify(&migration_state_notifiers, s);
}
--
1.8.1.4
