mirror of https://gitee.com/openkylin/qemu.git
133 lines
3.6 KiB
C
133 lines
3.6 KiB
C
/*
|
|
* QEMU live migration
|
|
*
|
|
* Copyright IBM, Corp. 2008
|
|
*
|
|
* Authors:
|
|
* Anthony Liguori <aliguori@us.ibm.com>
|
|
*
|
|
* This work is licensed under the terms of the GNU GPL, version 2. See
|
|
* the COPYING file in the top-level directory.
|
|
*
|
|
*/
|
|
|
|
#ifndef QEMU_MIGRATION_H
|
|
#define QEMU_MIGRATION_H
|
|
|
|
#include "qdict.h"
|
|
#include "qemu-common.h"
|
|
#include "notify.h"
|
|
#include "error.h"
|
|
#include "vmstate.h"
|
|
#include "qapi-types.h"
|
|
|
|
struct MigrationParams {
|
|
bool blk;
|
|
bool shared;
|
|
};
|
|
|
|
typedef struct MigrationState MigrationState;
|
|
|
|
struct MigrationState
|
|
{
|
|
int64_t bandwidth_limit;
|
|
QEMUFile *file;
|
|
int fd;
|
|
int state;
|
|
int (*get_error)(MigrationState *s);
|
|
int (*close)(MigrationState *s);
|
|
int (*write)(MigrationState *s, const void *buff, size_t size);
|
|
void *opaque;
|
|
MigrationParams params;
|
|
int64_t total_time;
|
|
int64_t downtime;
|
|
int64_t expected_downtime;
|
|
int64_t dirty_pages_rate;
|
|
bool enabled_capabilities[MIGRATION_CAPABILITY_MAX];
|
|
int64_t xbzrle_cache_size;
|
|
};
|
|
|
|
void process_incoming_migration(QEMUFile *f);
|
|
|
|
int qemu_start_incoming_migration(const char *uri, Error **errp);
|
|
|
|
uint64_t migrate_max_downtime(void);
|
|
|
|
void do_info_migrate_print(Monitor *mon, const QObject *data);
|
|
|
|
void do_info_migrate(Monitor *mon, QObject **ret_data);
|
|
|
|
int exec_start_incoming_migration(const char *host_port);
|
|
|
|
int exec_start_outgoing_migration(MigrationState *s, const char *host_port);
|
|
|
|
int tcp_start_incoming_migration(const char *host_port, Error **errp);
|
|
|
|
int tcp_start_outgoing_migration(MigrationState *s, const char *host_port,
|
|
Error **errp);
|
|
|
|
int unix_start_incoming_migration(const char *path, Error **errp);
|
|
|
|
int unix_start_outgoing_migration(MigrationState *s, const char *path, Error **errp);
|
|
|
|
int fd_start_incoming_migration(const char *path);
|
|
|
|
int fd_start_outgoing_migration(MigrationState *s, const char *fdname);
|
|
|
|
void migrate_fd_error(MigrationState *s);
|
|
|
|
void migrate_fd_connect(MigrationState *s);
|
|
|
|
ssize_t migrate_fd_put_buffer(MigrationState *s, const void *data,
|
|
size_t size);
|
|
void migrate_fd_put_ready(MigrationState *s);
|
|
int migrate_fd_wait_for_unfreeze(MigrationState *s);
|
|
int migrate_fd_close(MigrationState *s);
|
|
|
|
void add_migration_state_change_notifier(Notifier *notify);
|
|
void remove_migration_state_change_notifier(Notifier *notify);
|
|
bool migration_is_active(MigrationState *);
|
|
bool migration_has_finished(MigrationState *);
|
|
bool migration_has_failed(MigrationState *);
|
|
MigrationState *migrate_get_current(void);
|
|
|
|
uint64_t ram_bytes_remaining(void);
|
|
uint64_t ram_bytes_transferred(void);
|
|
uint64_t ram_bytes_total(void);
|
|
|
|
extern SaveVMHandlers savevm_ram_handlers;
|
|
|
|
uint64_t dup_mig_bytes_transferred(void);
|
|
uint64_t dup_mig_pages_transferred(void);
|
|
uint64_t norm_mig_bytes_transferred(void);
|
|
uint64_t norm_mig_pages_transferred(void);
|
|
uint64_t xbzrle_mig_bytes_transferred(void);
|
|
uint64_t xbzrle_mig_pages_transferred(void);
|
|
uint64_t xbzrle_mig_pages_overflow(void);
|
|
uint64_t xbzrle_mig_pages_cache_miss(void);
|
|
|
|
/**
|
|
* @migrate_add_blocker - prevent migration from proceeding
|
|
*
|
|
* @reason - an error to be returned whenever migration is attempted
|
|
*/
|
|
void migrate_add_blocker(Error *reason);
|
|
|
|
/**
|
|
* @migrate_del_blocker - remove a blocking error from migration
|
|
*
|
|
* @reason - the error blocking migration
|
|
*/
|
|
void migrate_del_blocker(Error *reason);
|
|
|
|
int xbzrle_encode_buffer(uint8_t *old_buf, uint8_t *new_buf, int slen,
|
|
uint8_t *dst, int dlen);
|
|
int xbzrle_decode_buffer(uint8_t *src, int slen, uint8_t *dst, int dlen);
|
|
|
|
int migrate_use_xbzrle(void);
|
|
int64_t migrate_xbzrle_cache_size(void);
|
|
|
|
int64_t xbzrle_cache_resize(int64_t new_size);
|
|
|
|
#endif
|