787ea49e80
Currently, it always returns 0, no need to check the return value at all. In addition, enter colo coroutine only if migration_incoming_colo_enabled() is true. Once the destination side enters the COLO* state, the COLO process will take over the remaining processes until COLO exits. Cc: Fabiano Rosas <farosas@suse.de> Reviewed-by: Peter Xu <peterx@redhat.com> Reviewed-by: Zhang Chen <chen.zhang@intel.com> Signed-off-by: Li Zhijian <lizhijian@fujitsu.com> [fixed mangled author email address] Signed-off-by: Fabiano Rosas <farosas@suse.de>
56 lines
1.4 KiB
C
56 lines
1.4 KiB
C
/*
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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 "qapi/qapi-types-migration.h"
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enum colo_event {
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COLO_EVENT_NONE,
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COLO_EVENT_CHECKPOINT,
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COLO_EVENT_FAILOVER,
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};
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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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/* loadvm */
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int migration_incoming_enable_colo(void);
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void migration_incoming_disable_colo(void);
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bool migration_incoming_colo_enabled(void);
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bool migration_incoming_in_colo_state(void);
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COLOMode get_colo_mode(void);
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/* failover */
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void colo_do_failover(void);
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/*
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* colo_checkpoint_delay_set
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*
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* Handles change of x-checkpoint-delay migration parameter, called from
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* migrate_params_apply() to notify COLO module about the change.
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*/
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void colo_checkpoint_delay_set(void);
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/*
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* Starts COLO incoming process. Called from process_incoming_migration_co()
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* after loading the state.
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*
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* Called with BQL locked, may temporary release BQL.
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*/
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void coroutine_fn colo_incoming_co(void);
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void colo_shutdown(void);
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#endif
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