eef0bae3a7
The block migration has been considered obsolete since QEMU 8.2 in
favor of the more flexible storage migration provided by the
blockdev-mirror driver. Two releases have passed so now it's time to
remove it.
Deprecation commit 66db46ca83 ("migration: Deprecate block
migration").
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Signed-off-by: Fabiano Rosas <farosas@suse.de>
115 lines
3.3 KiB
C
115 lines
3.3 KiB
C
/*
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* QEMU migration miscellaneus exported functions
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*
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* Copyright IBM, Corp. 2008
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*
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* Authors:
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* Anthony Liguori <aliguori@us.ibm.com>
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*
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* This work is licensed under the terms of the GNU GPL, version 2. See
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* the COPYING file in the top-level directory.
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*
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*/
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#ifndef MIGRATION_MISC_H
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#define MIGRATION_MISC_H
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#include "qemu/notify.h"
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#include "qapi/qapi-types-migration.h"
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#include "qapi/qapi-types-net.h"
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#include "migration/client-options.h"
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/* migration/ram.c */
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typedef enum PrecopyNotifyReason {
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PRECOPY_NOTIFY_SETUP = 0,
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PRECOPY_NOTIFY_BEFORE_BITMAP_SYNC = 1,
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PRECOPY_NOTIFY_AFTER_BITMAP_SYNC = 2,
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PRECOPY_NOTIFY_COMPLETE = 3,
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PRECOPY_NOTIFY_CLEANUP = 4,
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PRECOPY_NOTIFY_MAX = 5,
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} PrecopyNotifyReason;
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typedef struct PrecopyNotifyData {
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enum PrecopyNotifyReason reason;
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} PrecopyNotifyData;
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void precopy_infrastructure_init(void);
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void precopy_add_notifier(NotifierWithReturn *n);
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void precopy_remove_notifier(NotifierWithReturn *n);
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int precopy_notify(PrecopyNotifyReason reason, Error **errp);
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void ram_mig_init(void);
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void qemu_guest_free_page_hint(void *addr, size_t len);
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bool migrate_ram_is_ignored(RAMBlock *block);
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/* migration/block.c */
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AnnounceParameters *migrate_announce_params(void);
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/* migration/savevm.c */
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void dump_vmstate_json_to_file(FILE *out_fp);
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/* migration/migration.c */
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void migration_object_init(void);
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void migration_shutdown(void);
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bool migration_is_idle(void);
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bool migration_is_active(void);
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bool migration_is_device(void);
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bool migration_thread_is_self(void);
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bool migration_is_setup_or_active(void);
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typedef enum MigrationEventType {
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MIG_EVENT_PRECOPY_SETUP,
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MIG_EVENT_PRECOPY_DONE,
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MIG_EVENT_PRECOPY_FAILED,
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MIG_EVENT_MAX
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} MigrationEventType;
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typedef struct MigrationEvent {
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MigrationEventType type;
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} MigrationEvent;
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/*
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* A MigrationNotifyFunc may return an error code and an Error object,
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* but only when @e->type is MIG_EVENT_PRECOPY_SETUP. The code is an int
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* to allow for different failure modes and recovery actions.
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*/
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typedef int (*MigrationNotifyFunc)(NotifierWithReturn *notify,
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MigrationEvent *e, Error **errp);
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/*
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* Register the notifier @notify to be called when a migration event occurs
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* for MIG_MODE_NORMAL, as specified by the MigrationEvent passed to @func.
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* Notifiers may receive events in any of the following orders:
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* - MIG_EVENT_PRECOPY_SETUP -> MIG_EVENT_PRECOPY_DONE
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* - MIG_EVENT_PRECOPY_SETUP -> MIG_EVENT_PRECOPY_FAILED
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* - MIG_EVENT_PRECOPY_FAILED
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*/
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void migration_add_notifier(NotifierWithReturn *notify,
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MigrationNotifyFunc func);
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/*
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* Same as migration_add_notifier, but applies to be specified @mode.
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*/
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void migration_add_notifier_mode(NotifierWithReturn *notify,
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MigrationNotifyFunc func, MigMode mode);
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void migration_remove_notifier(NotifierWithReturn *notify);
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bool migration_is_running(void);
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void migration_file_set_error(int err);
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/* True if incoming migration entered POSTCOPY_INCOMING_DISCARD */
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bool migration_in_incoming_postcopy(void);
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/* True if incoming migration entered POSTCOPY_INCOMING_ADVISE */
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bool migration_incoming_postcopy_advised(void);
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/* True if background snapshot is active */
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bool migration_in_bg_snapshot(void);
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/* migration/block-dirty-bitmap.c */
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void dirty_bitmap_mig_init(void);
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#endif
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