2016-10-27 14:42:52 +08:00
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/*
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* COarse-grain LOck-stepping Virtual Machines for Non-stop Service (COLO)
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* (a.k.a. Fault Tolerance or Continuous Replication)
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*
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* Copyright (c) 2016 HUAWEI TECHNOLOGIES CO., LTD.
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* Copyright (c) 2016 FUJITSU LIMITED
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* Copyright (c) 2016 Intel Corporation
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or
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* later. See the COPYING file in the top-level directory.
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*/
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#ifndef QEMU_COLO_H
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#define QEMU_COLO_H
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#include "qemu-common.h"
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2016-10-27 14:42:53 +08:00
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#include "migration/migration.h"
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2016-10-27 14:42:55 +08:00
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#include "qemu/coroutine_int.h"
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#include "qemu/thread.h"
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COLO: Add 'x-colo-lost-heartbeat' command to trigger failover
We leave users to choose whatever heartbeat solution they want,
if the heartbeat is lost, or other errors they detect, they can use
experimental command 'x_colo_lost_heartbeat' to tell COLO to do failover,
COLO will do operations accordingly.
For example, if the command is sent to the Primary side,
the Primary side will exit COLO mode, does cleanup work,
and then, PVM will take over the service work. If sent to the Secondary side,
the Secondary side will run failover work, then takes over PVM's service work.
Cc: Luiz Capitulino <lcapitulino@redhat.com>
Cc: Eric Blake <eblake@redhat.com>
Cc: Markus Armbruster <armbru@redhat.com>
Signed-off-by: zhanghailiang <zhang.zhanghailiang@huawei.com>
Signed-off-by: Li Zhijian <lizhijian@cn.fujitsu.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>
2016-10-27 14:43:03 +08:00
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#include "qemu/main-loop.h"
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2016-10-27 14:42:52 +08:00
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bool colo_supported(void);
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2016-10-27 14:42:53 +08:00
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void colo_info_init(void);
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2016-10-27 14:42:52 +08:00
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2016-10-27 14:42:54 +08:00
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void migrate_start_colo_process(MigrationState *s);
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bool migration_in_colo_state(void);
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2016-10-27 14:42:55 +08:00
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/* loadvm */
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bool migration_incoming_enable_colo(void);
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void migration_incoming_exit_colo(void);
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void *colo_process_incoming_thread(void *opaque);
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bool migration_incoming_in_colo_state(void);
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COLO: Add 'x-colo-lost-heartbeat' command to trigger failover
We leave users to choose whatever heartbeat solution they want,
if the heartbeat is lost, or other errors they detect, they can use
experimental command 'x_colo_lost_heartbeat' to tell COLO to do failover,
COLO will do operations accordingly.
For example, if the command is sent to the Primary side,
the Primary side will exit COLO mode, does cleanup work,
and then, PVM will take over the service work. If sent to the Secondary side,
the Secondary side will run failover work, then takes over PVM's service work.
Cc: Luiz Capitulino <lcapitulino@redhat.com>
Cc: Eric Blake <eblake@redhat.com>
Cc: Markus Armbruster <armbru@redhat.com>
Signed-off-by: zhanghailiang <zhang.zhanghailiang@huawei.com>
Signed-off-by: Li Zhijian <lizhijian@cn.fujitsu.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>
2016-10-27 14:43:03 +08:00
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COLOMode get_colo_mode(void);
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2016-10-27 14:43:05 +08:00
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/* failover */
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void colo_do_failover(MigrationState *s);
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2016-10-27 14:42:52 +08:00
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#endif
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