/* * 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" 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; int blk; int shared; }; void process_incoming_migration(QEMUFile *f); int qemu_start_incoming_migration(const char *uri); 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); int tcp_start_outgoing_migration(MigrationState *s, const char *host_port); int unix_start_incoming_migration(const char *path); int unix_start_outgoing_migration(MigrationState *s, const char *path); 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); 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 *); uint64_t ram_bytes_remaining(void); uint64_t ram_bytes_transferred(void); uint64_t ram_bytes_total(void); int ram_save_live(QEMUFile *f, int stage, void *opaque); int ram_load(QEMUFile *f, void *opaque, int version_id); /** * @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); #endif