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1 | /* | |
2 | * QEMU live migration | |
3 | * | |
4 | * Copyright IBM, Corp. 2008 | |
5 | * | |
6 | * Authors: | |
7 | * Anthony Liguori <aliguori@us.ibm.com> | |
8 | * | |
9 | * This work is licensed under the terms of the GNU GPL, version 2. See | |
10 | * the COPYING file in the top-level directory. | |
11 | * | |
12 | */ | |
13 | ||
14 | #ifndef QEMU_MIGRATION_H | |
15 | #define QEMU_MIGRATION_H | |
16 | ||
17 | #include "qdict.h" | |
18 | #include "qemu-common.h" | |
19 | #include "notify.h" | |
20 | #include "error.h" | |
21 | ||
22 | typedef struct MigrationState MigrationState; | |
23 | ||
24 | struct MigrationState | |
25 | { | |
26 | int64_t bandwidth_limit; | |
27 | QEMUFile *file; | |
28 | int fd; | |
29 | int state; | |
30 | int (*get_error)(MigrationState *s); | |
31 | int (*close)(MigrationState *s); | |
32 | int (*write)(MigrationState *s, const void *buff, size_t size); | |
33 | void *opaque; | |
34 | int blk; | |
35 | int shared; | |
36 | }; | |
37 | ||
38 | void process_incoming_migration(QEMUFile *f); | |
39 | ||
40 | int qemu_start_incoming_migration(const char *uri); | |
41 | ||
42 | uint64_t migrate_max_downtime(void); | |
43 | ||
44 | void do_info_migrate_print(Monitor *mon, const QObject *data); | |
45 | ||
46 | void do_info_migrate(Monitor *mon, QObject **ret_data); | |
47 | ||
48 | int exec_start_incoming_migration(const char *host_port); | |
49 | ||
50 | int exec_start_outgoing_migration(MigrationState *s, const char *host_port); | |
51 | ||
52 | int tcp_start_incoming_migration(const char *host_port); | |
53 | ||
54 | int tcp_start_outgoing_migration(MigrationState *s, const char *host_port); | |
55 | ||
56 | int unix_start_incoming_migration(const char *path); | |
57 | ||
58 | int unix_start_outgoing_migration(MigrationState *s, const char *path); | |
59 | ||
60 | int fd_start_incoming_migration(const char *path); | |
61 | ||
62 | int fd_start_outgoing_migration(MigrationState *s, const char *fdname); | |
63 | ||
64 | void migrate_fd_error(MigrationState *s); | |
65 | ||
66 | void migrate_fd_connect(MigrationState *s); | |
67 | ||
68 | void add_migration_state_change_notifier(Notifier *notify); | |
69 | void remove_migration_state_change_notifier(Notifier *notify); | |
70 | bool migration_is_active(MigrationState *); | |
71 | bool migration_has_finished(MigrationState *); | |
72 | bool migration_has_failed(MigrationState *); | |
73 | ||
74 | uint64_t ram_bytes_remaining(void); | |
75 | uint64_t ram_bytes_transferred(void); | |
76 | uint64_t ram_bytes_total(void); | |
77 | ||
78 | int ram_save_live(QEMUFile *f, int stage, void *opaque); | |
79 | int ram_load(QEMUFile *f, void *opaque, int version_id); | |
80 | ||
81 | /** | |
82 | * @migrate_add_blocker - prevent migration from proceeding | |
83 | * | |
84 | * @reason - an error to be returned whenever migration is attempted | |
85 | */ | |
86 | void migrate_add_blocker(Error *reason); | |
87 | ||
88 | /** | |
89 | * @migrate_del_blocker - remove a blocking error from migration | |
90 | * | |
91 | * @reason - the error blocking migration | |
92 | */ | |
93 | void migrate_del_blocker(Error *reason); | |
94 | ||
95 | #endif |