Libvirt or other high level software can use this command query colo status.
You can test this command like that:
{'execute':'query-colo-status'}
Signed-off-by: Zhang Chen <zhangc...@gmail.com>
---
migration/colo.c | 31 +++++++++++++++++++++++++++++++
qapi/migration.json | 33 +++++++++++++++++++++++++++++++++
2 files changed, 64 insertions(+)
diff --git a/migration/colo.c b/migration/colo.c
index 8ca6381..127db3c 100644
--- a/migration/colo.c
+++ b/migration/colo.c
@@ -237,6 +237,37 @@ void qmp_xen_colo_do_checkpoint(Error **errp)
#endif
}
+COLOStatus *qmp_query_colo_status(Error **errp)
+{
+ MigrationState *m;
+ MigrationIncomingState *mis;
+ COLOStatus *s = g_new0(COLOStatus, 1);
+
+ if (get_colo_mode() == COLO_MODE_PRIMARY) {
+ m = migrate_get_current();
+
+ if (m->state == MIGRATION_STATUS_COLO) {
+ s->colo_running = true;
+ } else {
+ s->colo_running = false;
+ }
+ s->mode = COLO_MODE_PRIMARY;
+ } else {
+ mis = migration_incoming_get_current();
+
+ if (mis->state == MIGRATION_STATUS_COLO) {
+ s->colo_running = true;
+ } else {
+ s->colo_running = false;
+ }
+ s->mode = COLO_MODE_SECONDARY;
+ }
+
+ s->reason = failover_get_state();
+
+ return s;
+}
+
static void colo_send_message(QEMUFile *f, COLOMessage msg,
Error **errp)
{
diff --git a/qapi/migration.json b/qapi/migration.json
index 6c6c50e..8ccdd21 100644
--- a/qapi/migration.json
+++ b/qapi/migration.json
@@ -1201,3 +1201,36 @@
# Since: 2.9
##
{ 'command': 'xen-colo-do-checkpoint' }
+
+##
+# @COLOStatus:
+#
+# The result format for 'query-colo-status'.
+#
+# @mode: which COLO mode the VM was in when it exited.
+#
+# @colo-running: if true means COLO running well, otherwise COLO have done.
+#
+# @reason: describes the reason for the COLO exit.
+#
+# Since: 2.12
+##
+{ 'struct': 'COLOStatus',
+ 'data': { 'mode': 'COLOMode', 'colo-running': 'bool', 'reason':
'COLOExitReason' } }
+
+##
+# @query-colo-status:
+#
+# Query COLO status while the vm is running.
+#
+# Returns: A @COLOStatus object showing the status.
+#
+# Example:
+#
+# -> { "execute": "query-colo-status" }
+# <- { "return": { "mode": "primary", "colo-running": true, "reason":
"request" } }
+#
+# Since: 2.12
+##
+{ 'command': 'query-colo-status',
+ 'returns': 'COLOStatus' }
--
2.7.4
