| /* |
| * 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 "qapi/qmp/qdict.h" |
| #include "qemu-common.h" |
| #include "qemu/thread.h" |
| #include "qemu/notify.h" |
| #include "qapi/error.h" |
| #include "migration/vmstate.h" |
| #include "qapi-types.h" |
| #include "exec/cpu-common.h" |
| |
| #define QEMU_VM_FILE_MAGIC 0x5145564d |
| #define QEMU_VM_FILE_VERSION_COMPAT 0x00000002 |
| #define QEMU_VM_FILE_VERSION 0x00000003 |
| |
| #define QEMU_VM_EOF 0x00 |
| #define QEMU_VM_SECTION_START 0x01 |
| #define QEMU_VM_SECTION_PART 0x02 |
| #define QEMU_VM_SECTION_END 0x03 |
| #define QEMU_VM_SECTION_FULL 0x04 |
| #define QEMU_VM_SUBSECTION 0x05 |
| |
| struct MigrationParams { |
| bool blk; |
| bool shared; |
| }; |
| |
| typedef struct MigrationState MigrationState; |
| |
| struct MigrationState |
| { |
| int64_t bandwidth_limit; |
| size_t bytes_xfer; |
| size_t xfer_limit; |
| QemuThread thread; |
| QEMUBH *cleanup_bh; |
| QEMUFile *file; |
| |
| int state; |
| MigrationParams params; |
| double mbps; |
| int64_t total_time; |
| int64_t downtime; |
| int64_t expected_downtime; |
| int64_t dirty_pages_rate; |
| int64_t dirty_bytes_rate; |
| bool enabled_capabilities[MIGRATION_CAPABILITY_MAX]; |
| int64_t xbzrle_cache_size; |
| int64_t setup_time; |
| int64_t dirty_sync_count; |
| }; |
| |
| void process_incoming_migration(QEMUFile *f); |
| |
| void 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); |
| |
| void exec_start_incoming_migration(const char *host_port, Error **errp); |
| |
| void exec_start_outgoing_migration(MigrationState *s, const char *host_port, Error **errp); |
| |
| void tcp_start_incoming_migration(const char *host_port, Error **errp); |
| |
| void tcp_start_outgoing_migration(MigrationState *s, const char *host_port, Error **errp); |
| |
| void unix_start_incoming_migration(const char *path, Error **errp); |
| |
| void unix_start_outgoing_migration(MigrationState *s, const char *path, Error **errp); |
| |
| void fd_start_incoming_migration(const char *path, Error **errp); |
| |
| void fd_start_outgoing_migration(MigrationState *s, const char *fdname, Error **errp); |
| |
| void rdma_start_outgoing_migration(void *opaque, const char *host_port, Error **errp); |
| |
| void rdma_start_incoming_migration(const char *host_port, Error **errp); |
| |
| void migrate_fd_error(MigrationState *s); |
| |
| void migrate_fd_connect(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_in_setup(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); |
| void free_xbzrle_decoded_buf(void); |
| |
| void acct_update_position(QEMUFile *f, size_t size, bool zero); |
| |
| uint64_t dup_mig_bytes_transferred(void); |
| uint64_t dup_mig_pages_transferred(void); |
| uint64_t skipped_mig_bytes_transferred(void); |
| uint64_t skipped_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); |
| double xbzrle_mig_cache_miss_rate(void); |
| |
| void ram_handle_compressed(void *host, uint8_t ch, uint64_t size); |
| |
| /** |
| * @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); |
| |
| bool migrate_rdma_pin_all(void); |
| bool migrate_zero_blocks(void); |
| |
| bool migrate_auto_converge(void); |
| |
| 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); |
| |
| void ram_control_before_iterate(QEMUFile *f, uint64_t flags); |
| void ram_control_after_iterate(QEMUFile *f, uint64_t flags); |
| void ram_control_load_hook(QEMUFile *f, uint64_t flags); |
| |
| /* Whenever this is found in the data stream, the flags |
| * will be passed to ram_control_load_hook in the incoming-migration |
| * side. This lets before_ram_iterate/after_ram_iterate add |
| * transport-specific sections to the RAM migration data. |
| */ |
| #define RAM_SAVE_FLAG_HOOK 0x80 |
| |
| #define RAM_SAVE_CONTROL_NOT_SUPP -1000 |
| #define RAM_SAVE_CONTROL_DELAYED -2000 |
| |
| size_t ram_control_save_page(QEMUFile *f, ram_addr_t block_offset, |
| ram_addr_t offset, size_t size, |
| int *bytes_sent); |
| |
| #endif |