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Migration/colo.c: Make user obtain the last COLO mode info after failover

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Add the last_colo_mode to save the status after failover.
This patch can solve the issue that user want to get last colo mode
use query_colo_status after failover.

Signed-off-by: Zhang Chen <chen.zhang@intel.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
This commit is contained in:
Zhang Chen 2019-03-22 18:13:33 +08:00 • committed by Juan Quintela
parent 82cd368ccd
commit 5ed0deca41
2 changed files with 22 additions and 1 deletions
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16
migration/colo.c
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@ -38,6 +38,9 @@
static bool vmstate_loading;
static Notifier packets_compare_notifier;
/* User need to know colo mode after COLO failover */
static COLOMode last_colo_mode;
#define COLO_BUFFER_BASE_SIZE (4 * 1024 * 1024)
bool migration_in_colo_state(void)
@ -264,6 +267,7 @@ COLOStatus *qmp_query_colo_status(Error **errp)
COLOStatus *s = g_new0(COLOStatus, 1);
s->mode = get_colo_mode();
s->last_mode = last_colo_mode;
switch (failover_get_state()) {
case FAILOVER_STATUS_NONE:
@ -515,6 +519,12 @@ static void colo_process_checkpoint(MigrationState *s)
Error *local_err = NULL;
int ret;
last_colo_mode = get_colo_mode();
if (last_colo_mode != COLO_MODE_PRIMARY) {
error_report("COLO mode must be COLO_MODE_PRIMARY");
return;
}
failover_init_state();
s->rp_state.from_dst_file = qemu_file_get_return_path(s->to_dst_file);
@ -688,6 +698,12 @@ void *colo_process_incoming_thread(void *opaque)
migrate_set_state(&mis->state, MIGRATION_STATUS_ACTIVE,
MIGRATION_STATUS_COLO);
last_colo_mode = get_colo_mode();
if (last_colo_mode != COLO_MODE_SECONDARY) {
error_report("COLO mode must be COLO_MODE_SECONDARY");
return NULL;
}
failover_init_state();
mis->to_src_file = qemu_file_get_return_path(mis->from_src_file);