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COLO: Introduce state to record failover process

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When handling failover, COLO processes differently according to
the different stage of failover process, here we introduce a global
atomic variable to record the status of failover.

We add four failover status to indicate the different stage of failover process.
You should use the helpers to get and set the value.

Signed-off-by: zhanghailiang <zhang.zhanghailiang@huawei.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Amit Shah <amit.shah@redhat.com>
Signed-off-by: Amit Shah <amit@amitshah.net>
This commit is contained in:
zhanghailiang 2016-10-27 14:43:04 +08:00 • committed by Amit Shah
parent d89e666e06
commit aef060850b
5 changed files with 69 additions and 0 deletions
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5
include/migration/failover.h
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@ -14,7 +14,12 @@
#define QEMU_FAILOVER_H
#include "qemu-common.h"
#include "qapi-types.h"
void failover_init_state(void);
FailoverStatus failover_set_state(FailoverStatus old_state,
FailoverStatus new_state);
FailoverStatus failover_get_state(void);
void failover_request_active(Error **errp);
#endif