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1 | 5bb7910a | aliguori | /*
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2 | 5bb7910a | aliguori | * QEMU live migration
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3 | 5bb7910a | aliguori | *
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4 | 5bb7910a | aliguori | * Copyright IBM, Corp. 2008
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5 | 5bb7910a | aliguori | *
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6 | 5bb7910a | aliguori | * Authors:
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7 | 5bb7910a | aliguori | * Anthony Liguori <aliguori@us.ibm.com>
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8 | 5bb7910a | aliguori | *
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9 | 5bb7910a | aliguori | * This work is licensed under the terms of the GNU GPL, version 2. See
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10 | 5bb7910a | aliguori | * the COPYING file in the top-level directory.
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11 | 5bb7910a | aliguori | *
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12 | 6b620ca3 | Paolo Bonzini | * Contributions after 2012-01-13 are licensed under the terms of the
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13 | 6b620ca3 | Paolo Bonzini | * GNU GPL, version 2 or (at your option) any later version.
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14 | 5bb7910a | aliguori | */
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15 | 5bb7910a | aliguori | |
16 | 5bb7910a | aliguori | #include "qemu-common.h" |
17 | 6a1751b7 | Alex Bligh | #include "qemu/main-loop.h" |
18 | caf71f86 | Paolo Bonzini | #include "migration/migration.h" |
19 | 83c9089e | Paolo Bonzini | #include "monitor/monitor.h" |
20 | 0d82d0e8 | Juan Quintela | #include "migration/qemu-file.h" |
21 | 9c17d615 | Paolo Bonzini | #include "sysemu/sysemu.h" |
22 | 737e150e | Paolo Bonzini | #include "block/block.h" |
23 | 1de7afc9 | Paolo Bonzini | #include "qemu/sockets.h" |
24 | caf71f86 | Paolo Bonzini | #include "migration/block.h" |
25 | 766bd176 | Juan Quintela | #include "qemu/thread.h" |
26 | 791e7c82 | Luiz Capitulino | #include "qmp-commands.h" |
27 | c09e5bb1 | Kazuya Saito | #include "trace.h" |
28 | 065e2813 | aliguori | |
29 | 065e2813 | aliguori | //#define DEBUG_MIGRATION
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30 | 065e2813 | aliguori | |
31 | 065e2813 | aliguori | #ifdef DEBUG_MIGRATION
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32 | d0f2c4c6 | malc | #define DPRINTF(fmt, ...) \
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33 | 065e2813 | aliguori | do { printf("migration: " fmt, ## __VA_ARGS__); } while (0) |
34 | 065e2813 | aliguori | #else
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35 | d0f2c4c6 | malc | #define DPRINTF(fmt, ...) \
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36 | 065e2813 | aliguori | do { } while (0) |
37 | 065e2813 | aliguori | #endif
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38 | 5bb7910a | aliguori | |
39 | 7dc688ed | Juan Quintela | enum {
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40 | 29ae8a41 | Michael R. Hines | MIG_STATE_ERROR = -1,
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41 | 29ae8a41 | Michael R. Hines | MIG_STATE_NONE, |
42 | 7dc688ed | Juan Quintela | MIG_STATE_SETUP, |
43 | 51cf4c1a | Zhanghaoyu (A) | MIG_STATE_CANCELLING, |
44 | 7dc688ed | Juan Quintela | MIG_STATE_CANCELLED, |
45 | 7dc688ed | Juan Quintela | MIG_STATE_ACTIVE, |
46 | 7dc688ed | Juan Quintela | MIG_STATE_COMPLETED, |
47 | 7dc688ed | Juan Quintela | }; |
48 | 5bb7910a | aliguori | |
49 | d0ae46c1 | Juan Quintela | #define MAX_THROTTLE (32 << 20) /* Migration speed throttling */ |
50 | 5bb7910a | aliguori | |
51 | 5b4e1eb7 | Juan Quintela | /* Amount of time to allocate to each "chunk" of bandwidth-throttled
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52 | 5b4e1eb7 | Juan Quintela | * data. */
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53 | 5b4e1eb7 | Juan Quintela | #define BUFFER_DELAY 100 |
54 | 5b4e1eb7 | Juan Quintela | #define XFER_LIMIT_RATIO (1000 / BUFFER_DELAY) |
55 | 5b4e1eb7 | Juan Quintela | |
56 | 17ad9b35 | Orit Wasserman | /* Migration XBZRLE default cache size */
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57 | 17ad9b35 | Orit Wasserman | #define DEFAULT_MIGRATE_CACHE_SIZE (64 * 1024 * 1024) |
58 | 17ad9b35 | Orit Wasserman | |
59 | 99a0db9b | Gerd Hoffmann | static NotifierList migration_state_notifiers =
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60 | 99a0db9b | Gerd Hoffmann | NOTIFIER_LIST_INITIALIZER(migration_state_notifiers); |
61 | 99a0db9b | Gerd Hoffmann | |
62 | 17549e84 | Juan Quintela | /* When we add fault tolerance, we could have several
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63 | 17549e84 | Juan Quintela | migrations at once. For now we don't need to add
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64 | 17549e84 | Juan Quintela | dynamic creation of migration */
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65 | 17549e84 | Juan Quintela | |
66 | 859bc756 | Juan Quintela | MigrationState *migrate_get_current(void)
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67 | 17549e84 | Juan Quintela | { |
68 | 17549e84 | Juan Quintela | static MigrationState current_migration = {
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69 | 29ae8a41 | Michael R. Hines | .state = MIG_STATE_NONE, |
70 | d0ae46c1 | Juan Quintela | .bandwidth_limit = MAX_THROTTLE, |
71 | 17ad9b35 | Orit Wasserman | .xbzrle_cache_size = DEFAULT_MIGRATE_CACHE_SIZE, |
72 | 7e114f8c | Michael R. Hines | .mbps = -1,
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73 | 17549e84 | Juan Quintela | }; |
74 | 17549e84 | Juan Quintela | |
75 | 17549e84 | Juan Quintela | return ¤t_migration;
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76 | 17549e84 | Juan Quintela | } |
77 | 17549e84 | Juan Quintela | |
78 | 43eaae28 | Paolo Bonzini | void qemu_start_incoming_migration(const char *uri, Error **errp) |
79 | 5bb7910a | aliguori | { |
80 | 34c9dd8e | aliguori | const char *p; |
81 | 34c9dd8e | aliguori | |
82 | 34c9dd8e | aliguori | if (strstart(uri, "tcp:", &p)) |
83 | 43eaae28 | Paolo Bonzini | tcp_start_incoming_migration(p, errp); |
84 | 2da776db | Michael R. Hines | #ifdef CONFIG_RDMA
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85 | 2da776db | Michael R. Hines | else if (strstart(uri, "x-rdma:", &p)) |
86 | 2da776db | Michael R. Hines | rdma_start_incoming_migration(p, errp); |
87 | 2da776db | Michael R. Hines | #endif
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88 | 065e2813 | aliguori | #if !defined(WIN32)
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89 | 065e2813 | aliguori | else if (strstart(uri, "exec:", &p)) |
90 | 43eaae28 | Paolo Bonzini | exec_start_incoming_migration(p, errp); |
91 | 4951f65b | Chris Lalancette | else if (strstart(uri, "unix:", &p)) |
92 | 43eaae28 | Paolo Bonzini | unix_start_incoming_migration(p, errp); |
93 | 5ac1fad3 | Paolo Bonzini | else if (strstart(uri, "fd:", &p)) |
94 | 43eaae28 | Paolo Bonzini | fd_start_incoming_migration(p, errp); |
95 | 065e2813 | aliguori | #endif
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96 | 8ca5e801 | Juan Quintela | else {
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97 | 312fd5f2 | Markus Armbruster | error_setg(errp, "unknown migration protocol: %s", uri);
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98 | 8ca5e801 | Juan Quintela | } |
99 | 5bb7910a | aliguori | } |
100 | 5bb7910a | aliguori | |
101 | 82a4da79 | Paolo Bonzini | static void process_incoming_migration_co(void *opaque) |
102 | 511c0231 | Juan Quintela | { |
103 | 82a4da79 | Paolo Bonzini | QEMUFile *f = opaque; |
104 | 1c12e1f5 | Paolo Bonzini | int ret;
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105 | 1c12e1f5 | Paolo Bonzini | |
106 | 1c12e1f5 | Paolo Bonzini | ret = qemu_loadvm_state(f); |
107 | 1c12e1f5 | Paolo Bonzini | qemu_fclose(f); |
108 | 905f26f2 | Gonglei (Arei) | free_xbzrle_decoded_buf(); |
109 | 1c12e1f5 | Paolo Bonzini | if (ret < 0) { |
110 | 511c0231 | Juan Quintela | fprintf(stderr, "load of migration failed\n");
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111 | 4aead692 | Eric Blake | exit(EXIT_FAILURE); |
112 | 511c0231 | Juan Quintela | } |
113 | 511c0231 | Juan Quintela | qemu_announce_self(); |
114 | 511c0231 | Juan Quintela | DPRINTF("successfully loaded vm state\n");
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115 | 511c0231 | Juan Quintela | |
116 | 901862cb | Benoît Canet | bdrv_clear_incoming_migration_all(); |
117 | 0f15423c | Anthony Liguori | /* Make sure all file formats flush their mutable metadata */
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118 | 0f15423c | Anthony Liguori | bdrv_invalidate_cache_all(); |
119 | 0f15423c | Anthony Liguori | |
120 | f5bbfba1 | Luiz Capitulino | if (autostart) {
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121 | 511c0231 | Juan Quintela | vm_start(); |
122 | f5bbfba1 | Luiz Capitulino | } else {
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123 | 29ed72f1 | Paolo Bonzini | runstate_set(RUN_STATE_PAUSED); |
124 | f5bbfba1 | Luiz Capitulino | } |
125 | 511c0231 | Juan Quintela | } |
126 | 511c0231 | Juan Quintela | |
127 | 82a4da79 | Paolo Bonzini | void process_incoming_migration(QEMUFile *f)
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128 | 82a4da79 | Paolo Bonzini | { |
129 | 82a4da79 | Paolo Bonzini | Coroutine *co = qemu_coroutine_create(process_incoming_migration_co); |
130 | 82a4da79 | Paolo Bonzini | int fd = qemu_get_fd(f);
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131 | 82a4da79 | Paolo Bonzini | |
132 | 82a4da79 | Paolo Bonzini | assert(fd != -1);
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133 | f9e8cacc | Stefan Hajnoczi | qemu_set_nonblock(fd); |
134 | 82a4da79 | Paolo Bonzini | qemu_coroutine_enter(co, f); |
135 | 82a4da79 | Paolo Bonzini | } |
136 | 82a4da79 | Paolo Bonzini | |
137 | a0a3fd60 | Glauber Costa | /* amount of nanoseconds we are willing to wait for migration to be down.
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138 | a0a3fd60 | Glauber Costa | * the choice of nanoseconds is because it is the maximum resolution that
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139 | a0a3fd60 | Glauber Costa | * get_clock() can achieve. It is an internal measure. All user-visible
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140 | a0a3fd60 | Glauber Costa | * units must be in seconds */
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141 | a0a3fd60 | Glauber Costa | static uint64_t max_downtime = 30000000; |
142 | a0a3fd60 | Glauber Costa | |
143 | a0a3fd60 | Glauber Costa | uint64_t migrate_max_downtime(void)
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144 | a0a3fd60 | Glauber Costa | { |
145 | a0a3fd60 | Glauber Costa | return max_downtime;
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146 | a0a3fd60 | Glauber Costa | } |
147 | a0a3fd60 | Glauber Costa | |
148 | bbf6da32 | Orit Wasserman | MigrationCapabilityStatusList *qmp_query_migrate_capabilities(Error **errp) |
149 | bbf6da32 | Orit Wasserman | { |
150 | bbf6da32 | Orit Wasserman | MigrationCapabilityStatusList *head = NULL;
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151 | bbf6da32 | Orit Wasserman | MigrationCapabilityStatusList *caps; |
152 | bbf6da32 | Orit Wasserman | MigrationState *s = migrate_get_current(); |
153 | bbf6da32 | Orit Wasserman | int i;
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154 | bbf6da32 | Orit Wasserman | |
155 | 387eedeb | Michael Tokarev | caps = NULL; /* silence compiler warning */ |
156 | bbf6da32 | Orit Wasserman | for (i = 0; i < MIGRATION_CAPABILITY_MAX; i++) { |
157 | bbf6da32 | Orit Wasserman | if (head == NULL) { |
158 | bbf6da32 | Orit Wasserman | head = g_malloc0(sizeof(*caps));
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159 | bbf6da32 | Orit Wasserman | caps = head; |
160 | bbf6da32 | Orit Wasserman | } else {
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161 | bbf6da32 | Orit Wasserman | caps->next = g_malloc0(sizeof(*caps));
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162 | bbf6da32 | Orit Wasserman | caps = caps->next; |
163 | bbf6da32 | Orit Wasserman | } |
164 | bbf6da32 | Orit Wasserman | caps->value = |
165 | bbf6da32 | Orit Wasserman | g_malloc(sizeof(*caps->value));
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166 | bbf6da32 | Orit Wasserman | caps->value->capability = i; |
167 | bbf6da32 | Orit Wasserman | caps->value->state = s->enabled_capabilities[i]; |
168 | bbf6da32 | Orit Wasserman | } |
169 | bbf6da32 | Orit Wasserman | |
170 | bbf6da32 | Orit Wasserman | return head;
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171 | bbf6da32 | Orit Wasserman | } |
172 | bbf6da32 | Orit Wasserman | |
173 | f36d55af | Orit Wasserman | static void get_xbzrle_cache_stats(MigrationInfo *info) |
174 | f36d55af | Orit Wasserman | { |
175 | f36d55af | Orit Wasserman | if (migrate_use_xbzrle()) {
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176 | f36d55af | Orit Wasserman | info->has_xbzrle_cache = true;
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177 | f36d55af | Orit Wasserman | info->xbzrle_cache = g_malloc0(sizeof(*info->xbzrle_cache));
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178 | f36d55af | Orit Wasserman | info->xbzrle_cache->cache_size = migrate_xbzrle_cache_size(); |
179 | f36d55af | Orit Wasserman | info->xbzrle_cache->bytes = xbzrle_mig_bytes_transferred(); |
180 | f36d55af | Orit Wasserman | info->xbzrle_cache->pages = xbzrle_mig_pages_transferred(); |
181 | f36d55af | Orit Wasserman | info->xbzrle_cache->cache_miss = xbzrle_mig_pages_cache_miss(); |
182 | f36d55af | Orit Wasserman | info->xbzrle_cache->overflow = xbzrle_mig_pages_overflow(); |
183 | f36d55af | Orit Wasserman | } |
184 | f36d55af | Orit Wasserman | } |
185 | f36d55af | Orit Wasserman | |
186 | 791e7c82 | Luiz Capitulino | MigrationInfo *qmp_query_migrate(Error **errp) |
187 | 5bb7910a | aliguori | { |
188 | 791e7c82 | Luiz Capitulino | MigrationInfo *info = g_malloc0(sizeof(*info));
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189 | 17549e84 | Juan Quintela | MigrationState *s = migrate_get_current(); |
190 | 17549e84 | Juan Quintela | |
191 | 17549e84 | Juan Quintela | switch (s->state) {
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192 | 29ae8a41 | Michael R. Hines | case MIG_STATE_NONE:
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193 | 17549e84 | Juan Quintela | /* no migration has happened ever */
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194 | 17549e84 | Juan Quintela | break;
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195 | 29ae8a41 | Michael R. Hines | case MIG_STATE_SETUP:
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196 | 29ae8a41 | Michael R. Hines | info->has_status = true;
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197 | 29ae8a41 | Michael R. Hines | info->status = g_strdup("setup");
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198 | ed4fbd10 | Michael R. Hines | info->has_total_time = false;
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199 | 29ae8a41 | Michael R. Hines | break;
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200 | 17549e84 | Juan Quintela | case MIG_STATE_ACTIVE:
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201 | 51cf4c1a | Zhanghaoyu (A) | case MIG_STATE_CANCELLING:
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202 | 791e7c82 | Luiz Capitulino | info->has_status = true;
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203 | 791e7c82 | Luiz Capitulino | info->status = g_strdup("active");
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204 | 7aa939af | Juan Quintela | info->has_total_time = true;
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205 | bc72ad67 | Alex Bligh | info->total_time = qemu_clock_get_ms(QEMU_CLOCK_REALTIME) |
206 | 7aa939af | Juan Quintela | - s->total_time; |
207 | 2c52ddf1 | Juan Quintela | info->has_expected_downtime = true;
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208 | 2c52ddf1 | Juan Quintela | info->expected_downtime = s->expected_downtime; |
209 | ed4fbd10 | Michael R. Hines | info->has_setup_time = true;
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210 | ed4fbd10 | Michael R. Hines | info->setup_time = s->setup_time; |
211 | 17549e84 | Juan Quintela | |
212 | 791e7c82 | Luiz Capitulino | info->has_ram = true;
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213 | 791e7c82 | Luiz Capitulino | info->ram = g_malloc0(sizeof(*info->ram));
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214 | 791e7c82 | Luiz Capitulino | info->ram->transferred = ram_bytes_transferred(); |
215 | 791e7c82 | Luiz Capitulino | info->ram->remaining = ram_bytes_remaining(); |
216 | 791e7c82 | Luiz Capitulino | info->ram->total = ram_bytes_total(); |
217 | 004d4c10 | Orit Wasserman | info->ram->duplicate = dup_mig_pages_transferred(); |
218 | f1c72795 | Peter Lieven | info->ram->skipped = skipped_mig_pages_transferred(); |
219 | 004d4c10 | Orit Wasserman | info->ram->normal = norm_mig_pages_transferred(); |
220 | 004d4c10 | Orit Wasserman | info->ram->normal_bytes = norm_mig_bytes_transferred(); |
221 | 8d017193 | Juan Quintela | info->ram->dirty_pages_rate = s->dirty_pages_rate; |
222 | 7e114f8c | Michael R. Hines | info->ram->mbps = s->mbps; |
223 | 8d017193 | Juan Quintela | |
224 | 17549e84 | Juan Quintela | if (blk_mig_active()) {
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225 | 791e7c82 | Luiz Capitulino | info->has_disk = true;
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226 | 791e7c82 | Luiz Capitulino | info->disk = g_malloc0(sizeof(*info->disk));
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227 | 791e7c82 | Luiz Capitulino | info->disk->transferred = blk_mig_bytes_transferred(); |
228 | 791e7c82 | Luiz Capitulino | info->disk->remaining = blk_mig_bytes_remaining(); |
229 | 791e7c82 | Luiz Capitulino | info->disk->total = blk_mig_bytes_total(); |
230 | ff8d81d8 | aliguori | } |
231 | f36d55af | Orit Wasserman | |
232 | f36d55af | Orit Wasserman | get_xbzrle_cache_stats(info); |
233 | 17549e84 | Juan Quintela | break;
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234 | 17549e84 | Juan Quintela | case MIG_STATE_COMPLETED:
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235 | f36d55af | Orit Wasserman | get_xbzrle_cache_stats(info); |
236 | f36d55af | Orit Wasserman | |
237 | 791e7c82 | Luiz Capitulino | info->has_status = true;
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238 | 791e7c82 | Luiz Capitulino | info->status = g_strdup("completed");
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239 | 00c14997 | Pawit Pornkitprasan | info->has_total_time = true;
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240 | 7aa939af | Juan Quintela | info->total_time = s->total_time; |
241 | 9c5a9fcf | Juan Quintela | info->has_downtime = true;
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242 | 9c5a9fcf | Juan Quintela | info->downtime = s->downtime; |
243 | ed4fbd10 | Michael R. Hines | info->has_setup_time = true;
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244 | ed4fbd10 | Michael R. Hines | info->setup_time = s->setup_time; |
245 | d5f8a570 | Juan Quintela | |
246 | d5f8a570 | Juan Quintela | info->has_ram = true;
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247 | d5f8a570 | Juan Quintela | info->ram = g_malloc0(sizeof(*info->ram));
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248 | d5f8a570 | Juan Quintela | info->ram->transferred = ram_bytes_transferred(); |
249 | d5f8a570 | Juan Quintela | info->ram->remaining = 0;
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250 | d5f8a570 | Juan Quintela | info->ram->total = ram_bytes_total(); |
251 | 004d4c10 | Orit Wasserman | info->ram->duplicate = dup_mig_pages_transferred(); |
252 | f1c72795 | Peter Lieven | info->ram->skipped = skipped_mig_pages_transferred(); |
253 | 004d4c10 | Orit Wasserman | info->ram->normal = norm_mig_pages_transferred(); |
254 | 004d4c10 | Orit Wasserman | info->ram->normal_bytes = norm_mig_bytes_transferred(); |
255 | 7e114f8c | Michael R. Hines | info->ram->mbps = s->mbps; |
256 | 17549e84 | Juan Quintela | break;
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257 | 17549e84 | Juan Quintela | case MIG_STATE_ERROR:
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258 | 791e7c82 | Luiz Capitulino | info->has_status = true;
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259 | 791e7c82 | Luiz Capitulino | info->status = g_strdup("failed");
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260 | 17549e84 | Juan Quintela | break;
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261 | 17549e84 | Juan Quintela | case MIG_STATE_CANCELLED:
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262 | 791e7c82 | Luiz Capitulino | info->has_status = true;
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263 | 791e7c82 | Luiz Capitulino | info->status = g_strdup("cancelled");
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264 | 17549e84 | Juan Quintela | break;
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265 | 5bb7910a | aliguori | } |
266 | 791e7c82 | Luiz Capitulino | |
267 | 791e7c82 | Luiz Capitulino | return info;
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268 | 5bb7910a | aliguori | } |
269 | 5bb7910a | aliguori | |
270 | 00458433 | Orit Wasserman | void qmp_migrate_set_capabilities(MigrationCapabilityStatusList *params,
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271 | 00458433 | Orit Wasserman | Error **errp) |
272 | 00458433 | Orit Wasserman | { |
273 | 00458433 | Orit Wasserman | MigrationState *s = migrate_get_current(); |
274 | 00458433 | Orit Wasserman | MigrationCapabilityStatusList *cap; |
275 | 00458433 | Orit Wasserman | |
276 | 29ae8a41 | Michael R. Hines | if (s->state == MIG_STATE_ACTIVE || s->state == MIG_STATE_SETUP) {
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277 | 00458433 | Orit Wasserman | error_set(errp, QERR_MIGRATION_ACTIVE); |
278 | 00458433 | Orit Wasserman | return;
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279 | 00458433 | Orit Wasserman | } |
280 | 00458433 | Orit Wasserman | |
281 | 00458433 | Orit Wasserman | for (cap = params; cap; cap = cap->next) {
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282 | 00458433 | Orit Wasserman | s->enabled_capabilities[cap->value->capability] = cap->value->state; |
283 | 00458433 | Orit Wasserman | } |
284 | 00458433 | Orit Wasserman | } |
285 | 00458433 | Orit Wasserman | |
286 | 065e2813 | aliguori | /* shared migration helpers */
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287 | 065e2813 | aliguori | |
288 | 51cf4c1a | Zhanghaoyu (A) | static void migrate_set_state(MigrationState *s, int old_state, int new_state) |
289 | 51cf4c1a | Zhanghaoyu (A) | { |
290 | 51cf4c1a | Zhanghaoyu (A) | if (atomic_cmpxchg(&s->state, old_state, new_state) == new_state) {
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291 | 51cf4c1a | Zhanghaoyu (A) | trace_migrate_set_state(new_state); |
292 | 51cf4c1a | Zhanghaoyu (A) | } |
293 | 51cf4c1a | Zhanghaoyu (A) | } |
294 | 51cf4c1a | Zhanghaoyu (A) | |
295 | bb1fadc4 | Paolo Bonzini | static void migrate_fd_cleanup(void *opaque) |
296 | 065e2813 | aliguori | { |
297 | bb1fadc4 | Paolo Bonzini | MigrationState *s = opaque; |
298 | bb1fadc4 | Paolo Bonzini | |
299 | bb1fadc4 | Paolo Bonzini | qemu_bh_delete(s->cleanup_bh); |
300 | bb1fadc4 | Paolo Bonzini | s->cleanup_bh = NULL;
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301 | bb1fadc4 | Paolo Bonzini | |
302 | 065e2813 | aliguori | if (s->file) {
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303 | d0f2c4c6 | malc | DPRINTF("closing file\n");
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304 | 404a7c05 | Paolo Bonzini | qemu_mutex_unlock_iothread(); |
305 | 404a7c05 | Paolo Bonzini | qemu_thread_join(&s->thread); |
306 | 404a7c05 | Paolo Bonzini | qemu_mutex_lock_iothread(); |
307 | 404a7c05 | Paolo Bonzini | |
308 | 6f190a06 | Paolo Bonzini | qemu_fclose(s->file); |
309 | 6f190a06 | Paolo Bonzini | s->file = NULL;
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310 | 065e2813 | aliguori | } |
311 | 065e2813 | aliguori | |
312 | a3fa1d78 | Paolo Bonzini | assert(s->state != MIG_STATE_ACTIVE); |
313 | 7a2c1721 | Paolo Bonzini | |
314 | a3fa1d78 | Paolo Bonzini | if (s->state != MIG_STATE_COMPLETED) {
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315 | 7a2c1721 | Paolo Bonzini | qemu_savevm_state_cancel(); |
316 | 51cf4c1a | Zhanghaoyu (A) | if (s->state == MIG_STATE_CANCELLING) {
|
317 | 51cf4c1a | Zhanghaoyu (A) | migrate_set_state(s, MIG_STATE_CANCELLING, MIG_STATE_CANCELLED); |
318 | 51cf4c1a | Zhanghaoyu (A) | } |
319 | 7a2c1721 | Paolo Bonzini | } |
320 | a3fa1d78 | Paolo Bonzini | |
321 | a3fa1d78 | Paolo Bonzini | notifier_list_notify(&migration_state_notifiers, s); |
322 | 065e2813 | aliguori | } |
323 | 065e2813 | aliguori | |
324 | 8b6b99b3 | Juan Quintela | void migrate_fd_error(MigrationState *s)
|
325 | 065e2813 | aliguori | { |
326 | 8b6b99b3 | Juan Quintela | DPRINTF("setting error state\n");
|
327 | bb1fadc4 | Paolo Bonzini | assert(s->file == NULL);
|
328 | bb1fadc4 | Paolo Bonzini | s->state = MIG_STATE_ERROR; |
329 | bb1fadc4 | Paolo Bonzini | trace_migrate_set_state(MIG_STATE_ERROR); |
330 | bb1fadc4 | Paolo Bonzini | notifier_list_notify(&migration_state_notifiers, s); |
331 | 458cf28e | Juan Quintela | } |
332 | 458cf28e | Juan Quintela | |
333 | 0edda1c4 | Juan Quintela | static void migrate_fd_cancel(MigrationState *s) |
334 | 065e2813 | aliguori | { |
335 | 6f2b811a | Zhanghaoyu (A) | int old_state ;
|
336 | d0f2c4c6 | malc | DPRINTF("cancelling migration\n");
|
337 | 065e2813 | aliguori | |
338 | 6f2b811a | Zhanghaoyu (A) | do {
|
339 | 6f2b811a | Zhanghaoyu (A) | old_state = s->state; |
340 | 6f2b811a | Zhanghaoyu (A) | if (old_state != MIG_STATE_SETUP && old_state != MIG_STATE_ACTIVE) {
|
341 | 6f2b811a | Zhanghaoyu (A) | break;
|
342 | 6f2b811a | Zhanghaoyu (A) | } |
343 | 51cf4c1a | Zhanghaoyu (A) | migrate_set_state(s, old_state, MIG_STATE_CANCELLING); |
344 | 51cf4c1a | Zhanghaoyu (A) | } while (s->state != MIG_STATE_CANCELLING);
|
345 | 065e2813 | aliguori | } |
346 | 065e2813 | aliguori | |
347 | 99a0db9b | Gerd Hoffmann | void add_migration_state_change_notifier(Notifier *notify)
|
348 | 99a0db9b | Gerd Hoffmann | { |
349 | 99a0db9b | Gerd Hoffmann | notifier_list_add(&migration_state_notifiers, notify); |
350 | 99a0db9b | Gerd Hoffmann | } |
351 | 99a0db9b | Gerd Hoffmann | |
352 | 99a0db9b | Gerd Hoffmann | void remove_migration_state_change_notifier(Notifier *notify)
|
353 | 99a0db9b | Gerd Hoffmann | { |
354 | 31552529 | Paolo Bonzini | notifier_remove(notify); |
355 | 99a0db9b | Gerd Hoffmann | } |
356 | 99a0db9b | Gerd Hoffmann | |
357 | 02edd2e7 | Stefan Hajnoczi | bool migration_in_setup(MigrationState *s)
|
358 | afe2df69 | Gerd Hoffmann | { |
359 | 02edd2e7 | Stefan Hajnoczi | return s->state == MIG_STATE_SETUP;
|
360 | afe2df69 | Gerd Hoffmann | } |
361 | afe2df69 | Gerd Hoffmann | |
362 | 7073693b | Juan Quintela | bool migration_has_finished(MigrationState *s)
|
363 | 99a0db9b | Gerd Hoffmann | { |
364 | 7073693b | Juan Quintela | return s->state == MIG_STATE_COMPLETED;
|
365 | 99a0db9b | Gerd Hoffmann | } |
366 | 0edda1c4 | Juan Quintela | |
367 | afe2df69 | Gerd Hoffmann | bool migration_has_failed(MigrationState *s)
|
368 | afe2df69 | Gerd Hoffmann | { |
369 | afe2df69 | Gerd Hoffmann | return (s->state == MIG_STATE_CANCELLED ||
|
370 | afe2df69 | Gerd Hoffmann | s->state == MIG_STATE_ERROR); |
371 | afe2df69 | Gerd Hoffmann | } |
372 | afe2df69 | Gerd Hoffmann | |
373 | 6607ae23 | Isaku Yamahata | static MigrationState *migrate_init(const MigrationParams *params) |
374 | 0edda1c4 | Juan Quintela | { |
375 | 17549e84 | Juan Quintela | MigrationState *s = migrate_get_current(); |
376 | d0ae46c1 | Juan Quintela | int64_t bandwidth_limit = s->bandwidth_limit; |
377 | bbf6da32 | Orit Wasserman | bool enabled_capabilities[MIGRATION_CAPABILITY_MAX];
|
378 | 17ad9b35 | Orit Wasserman | int64_t xbzrle_cache_size = s->xbzrle_cache_size; |
379 | bbf6da32 | Orit Wasserman | |
380 | bbf6da32 | Orit Wasserman | memcpy(enabled_capabilities, s->enabled_capabilities, |
381 | bbf6da32 | Orit Wasserman | sizeof(enabled_capabilities));
|
382 | 0edda1c4 | Juan Quintela | |
383 | 17549e84 | Juan Quintela | memset(s, 0, sizeof(*s)); |
384 | 6607ae23 | Isaku Yamahata | s->params = *params; |
385 | bbf6da32 | Orit Wasserman | memcpy(s->enabled_capabilities, enabled_capabilities, |
386 | bbf6da32 | Orit Wasserman | sizeof(enabled_capabilities));
|
387 | 17ad9b35 | Orit Wasserman | s->xbzrle_cache_size = xbzrle_cache_size; |
388 | 1299c631 | Juan Quintela | |
389 | 0edda1c4 | Juan Quintela | s->bandwidth_limit = bandwidth_limit; |
390 | d5934dde | Juan Quintela | s->state = MIG_STATE_SETUP; |
391 | c09e5bb1 | Kazuya Saito | trace_migrate_set_state(MIG_STATE_SETUP); |
392 | 0edda1c4 | Juan Quintela | |
393 | bc72ad67 | Alex Bligh | s->total_time = qemu_clock_get_ms(QEMU_CLOCK_REALTIME); |
394 | 0edda1c4 | Juan Quintela | return s;
|
395 | 0edda1c4 | Juan Quintela | } |
396 | cab30143 | Juan Quintela | |
397 | fa2756b7 | Anthony Liguori | static GSList *migration_blockers;
|
398 | fa2756b7 | Anthony Liguori | |
399 | fa2756b7 | Anthony Liguori | void migrate_add_blocker(Error *reason)
|
400 | fa2756b7 | Anthony Liguori | { |
401 | fa2756b7 | Anthony Liguori | migration_blockers = g_slist_prepend(migration_blockers, reason); |
402 | fa2756b7 | Anthony Liguori | } |
403 | fa2756b7 | Anthony Liguori | |
404 | fa2756b7 | Anthony Liguori | void migrate_del_blocker(Error *reason)
|
405 | fa2756b7 | Anthony Liguori | { |
406 | fa2756b7 | Anthony Liguori | migration_blockers = g_slist_remove(migration_blockers, reason); |
407 | fa2756b7 | Anthony Liguori | } |
408 | fa2756b7 | Anthony Liguori | |
409 | e1c37d0e | Luiz Capitulino | void qmp_migrate(const char *uri, bool has_blk, bool blk, |
410 | e1c37d0e | Luiz Capitulino | bool has_inc, bool inc, bool has_detach, bool detach, |
411 | e1c37d0e | Luiz Capitulino | Error **errp) |
412 | cab30143 | Juan Quintela | { |
413 | be7059cd | Paolo Bonzini | Error *local_err = NULL;
|
414 | 17549e84 | Juan Quintela | MigrationState *s = migrate_get_current(); |
415 | 6607ae23 | Isaku Yamahata | MigrationParams params; |
416 | cab30143 | Juan Quintela | const char *p; |
417 | cab30143 | Juan Quintela | |
418 | 8c0426ae | Pawit Pornkitprasan | params.blk = has_blk && blk; |
419 | 8c0426ae | Pawit Pornkitprasan | params.shared = has_inc && inc; |
420 | 6607ae23 | Isaku Yamahata | |
421 | 51cf4c1a | Zhanghaoyu (A) | if (s->state == MIG_STATE_ACTIVE || s->state == MIG_STATE_SETUP ||
|
422 | 51cf4c1a | Zhanghaoyu (A) | s->state == MIG_STATE_CANCELLING) { |
423 | e1c37d0e | Luiz Capitulino | error_set(errp, QERR_MIGRATION_ACTIVE); |
424 | e1c37d0e | Luiz Capitulino | return;
|
425 | cab30143 | Juan Quintela | } |
426 | cab30143 | Juan Quintela | |
427 | e1c37d0e | Luiz Capitulino | if (qemu_savevm_state_blocked(errp)) {
|
428 | e1c37d0e | Luiz Capitulino | return;
|
429 | cab30143 | Juan Quintela | } |
430 | cab30143 | Juan Quintela | |
431 | fa2756b7 | Anthony Liguori | if (migration_blockers) {
|
432 | e1c37d0e | Luiz Capitulino | *errp = error_copy(migration_blockers->data); |
433 | e1c37d0e | Luiz Capitulino | return;
|
434 | fa2756b7 | Anthony Liguori | } |
435 | fa2756b7 | Anthony Liguori | |
436 | 6607ae23 | Isaku Yamahata | s = migrate_init(¶ms); |
437 | cab30143 | Juan Quintela | |
438 | cab30143 | Juan Quintela | if (strstart(uri, "tcp:", &p)) { |
439 | f37afb5a | Paolo Bonzini | tcp_start_outgoing_migration(s, p, &local_err); |
440 | 2da776db | Michael R. Hines | #ifdef CONFIG_RDMA
|
441 | 2da776db | Michael R. Hines | } else if (strstart(uri, "x-rdma:", &p)) { |
442 | 2da776db | Michael R. Hines | rdma_start_outgoing_migration(s, p, &local_err); |
443 | 2da776db | Michael R. Hines | #endif
|
444 | cab30143 | Juan Quintela | #if !defined(WIN32)
|
445 | cab30143 | Juan Quintela | } else if (strstart(uri, "exec:", &p)) { |
446 | f37afb5a | Paolo Bonzini | exec_start_outgoing_migration(s, p, &local_err); |
447 | cab30143 | Juan Quintela | } else if (strstart(uri, "unix:", &p)) { |
448 | f37afb5a | Paolo Bonzini | unix_start_outgoing_migration(s, p, &local_err); |
449 | cab30143 | Juan Quintela | } else if (strstart(uri, "fd:", &p)) { |
450 | f37afb5a | Paolo Bonzini | fd_start_outgoing_migration(s, p, &local_err); |
451 | cab30143 | Juan Quintela | #endif
|
452 | 99a0db9b | Gerd Hoffmann | } else {
|
453 | e1c37d0e | Luiz Capitulino | error_set(errp, QERR_INVALID_PARAMETER_VALUE, "uri", "a valid migration protocol"); |
454 | c9501142 | Luiz Capitulino | s->state = MIG_STATE_ERROR; |
455 | e1c37d0e | Luiz Capitulino | return;
|
456 | cab30143 | Juan Quintela | } |
457 | cab30143 | Juan Quintela | |
458 | f37afb5a | Paolo Bonzini | if (local_err) {
|
459 | 342ab8d1 | Paolo Bonzini | migrate_fd_error(s); |
460 | f37afb5a | Paolo Bonzini | error_propagate(errp, local_err); |
461 | e1c37d0e | Luiz Capitulino | return;
|
462 | 1299c631 | Juan Quintela | } |
463 | cab30143 | Juan Quintela | } |
464 | cab30143 | Juan Quintela | |
465 | 6cdedb07 | Luiz Capitulino | void qmp_migrate_cancel(Error **errp)
|
466 | cab30143 | Juan Quintela | { |
467 | 17549e84 | Juan Quintela | migrate_fd_cancel(migrate_get_current()); |
468 | cab30143 | Juan Quintela | } |
469 | cab30143 | Juan Quintela | |
470 | 9e1ba4cc | Orit Wasserman | void qmp_migrate_set_cache_size(int64_t value, Error **errp)
|
471 | 9e1ba4cc | Orit Wasserman | { |
472 | 9e1ba4cc | Orit Wasserman | MigrationState *s = migrate_get_current(); |
473 | c91e681a | Orit Wasserman | int64_t new_size; |
474 | 9e1ba4cc | Orit Wasserman | |
475 | 9e1ba4cc | Orit Wasserman | /* Check for truncation */
|
476 | 9e1ba4cc | Orit Wasserman | if (value != (size_t)value) {
|
477 | 9e1ba4cc | Orit Wasserman | error_set(errp, QERR_INVALID_PARAMETER_VALUE, "cache size",
|
478 | 9e1ba4cc | Orit Wasserman | "exceeding address space");
|
479 | 9e1ba4cc | Orit Wasserman | return;
|
480 | 9e1ba4cc | Orit Wasserman | } |
481 | 9e1ba4cc | Orit Wasserman | |
482 | a5615b14 | Orit Wasserman | /* Cache should not be larger than guest ram size */
|
483 | a5615b14 | Orit Wasserman | if (value > ram_bytes_total()) {
|
484 | a5615b14 | Orit Wasserman | error_set(errp, QERR_INVALID_PARAMETER_VALUE, "cache size",
|
485 | a5615b14 | Orit Wasserman | "exceeds guest ram size ");
|
486 | a5615b14 | Orit Wasserman | return;
|
487 | a5615b14 | Orit Wasserman | } |
488 | a5615b14 | Orit Wasserman | |
489 | c91e681a | Orit Wasserman | new_size = xbzrle_cache_resize(value); |
490 | c91e681a | Orit Wasserman | if (new_size < 0) { |
491 | c91e681a | Orit Wasserman | error_set(errp, QERR_INVALID_PARAMETER_VALUE, "cache size",
|
492 | c91e681a | Orit Wasserman | "is smaller than page size");
|
493 | c91e681a | Orit Wasserman | return;
|
494 | c91e681a | Orit Wasserman | } |
495 | c91e681a | Orit Wasserman | |
496 | c91e681a | Orit Wasserman | s->xbzrle_cache_size = new_size; |
497 | 9e1ba4cc | Orit Wasserman | } |
498 | 9e1ba4cc | Orit Wasserman | |
499 | 9e1ba4cc | Orit Wasserman | int64_t qmp_query_migrate_cache_size(Error **errp) |
500 | 9e1ba4cc | Orit Wasserman | { |
501 | 9e1ba4cc | Orit Wasserman | return migrate_xbzrle_cache_size();
|
502 | 9e1ba4cc | Orit Wasserman | } |
503 | 9e1ba4cc | Orit Wasserman | |
504 | 3dc85383 | Luiz Capitulino | void qmp_migrate_set_speed(int64_t value, Error **errp)
|
505 | cab30143 | Juan Quintela | { |
506 | cab30143 | Juan Quintela | MigrationState *s; |
507 | cab30143 | Juan Quintela | |
508 | 3dc85383 | Luiz Capitulino | if (value < 0) { |
509 | 3dc85383 | Luiz Capitulino | value = 0;
|
510 | 99a0db9b | Gerd Hoffmann | } |
511 | 442773ce | Paolo Bonzini | if (value > SIZE_MAX) {
|
512 | 442773ce | Paolo Bonzini | value = SIZE_MAX; |
513 | 442773ce | Paolo Bonzini | } |
514 | cab30143 | Juan Quintela | |
515 | 17549e84 | Juan Quintela | s = migrate_get_current(); |
516 | 3dc85383 | Luiz Capitulino | s->bandwidth_limit = value; |
517 | 442773ce | Paolo Bonzini | if (s->file) {
|
518 | 442773ce | Paolo Bonzini | qemu_file_set_rate_limit(s->file, s->bandwidth_limit / XFER_LIMIT_RATIO); |
519 | 442773ce | Paolo Bonzini | } |
520 | cab30143 | Juan Quintela | } |
521 | cab30143 | Juan Quintela | |
522 | 4f0a993b | Luiz Capitulino | void qmp_migrate_set_downtime(double value, Error **errp) |
523 | cab30143 | Juan Quintela | { |
524 | 4f0a993b | Luiz Capitulino | value *= 1e9;
|
525 | 4f0a993b | Luiz Capitulino | value = MAX(0, MIN(UINT64_MAX, value));
|
526 | 4f0a993b | Luiz Capitulino | max_downtime = (uint64_t)value; |
527 | 99a0db9b | Gerd Hoffmann | } |
528 | 17ad9b35 | Orit Wasserman | |
529 | 60d9222c | Michael R. Hines | bool migrate_rdma_pin_all(void) |
530 | 60d9222c | Michael R. Hines | { |
531 | 60d9222c | Michael R. Hines | MigrationState *s; |
532 | 60d9222c | Michael R. Hines | |
533 | 60d9222c | Michael R. Hines | s = migrate_get_current(); |
534 | 60d9222c | Michael R. Hines | |
535 | 60d9222c | Michael R. Hines | return s->enabled_capabilities[MIGRATION_CAPABILITY_X_RDMA_PIN_ALL];
|
536 | 60d9222c | Michael R. Hines | } |
537 | 60d9222c | Michael R. Hines | |
538 | bde1e2ec | Chegu Vinod | bool migrate_auto_converge(void) |
539 | bde1e2ec | Chegu Vinod | { |
540 | bde1e2ec | Chegu Vinod | MigrationState *s; |
541 | bde1e2ec | Chegu Vinod | |
542 | bde1e2ec | Chegu Vinod | s = migrate_get_current(); |
543 | bde1e2ec | Chegu Vinod | |
544 | bde1e2ec | Chegu Vinod | return s->enabled_capabilities[MIGRATION_CAPABILITY_AUTO_CONVERGE];
|
545 | bde1e2ec | Chegu Vinod | } |
546 | bde1e2ec | Chegu Vinod | |
547 | 323004a3 | Peter Lieven | bool migrate_zero_blocks(void) |
548 | 323004a3 | Peter Lieven | { |
549 | 323004a3 | Peter Lieven | MigrationState *s; |
550 | 323004a3 | Peter Lieven | |
551 | 323004a3 | Peter Lieven | s = migrate_get_current(); |
552 | 323004a3 | Peter Lieven | |
553 | 323004a3 | Peter Lieven | return s->enabled_capabilities[MIGRATION_CAPABILITY_ZERO_BLOCKS];
|
554 | 323004a3 | Peter Lieven | } |
555 | 323004a3 | Peter Lieven | |
556 | 17ad9b35 | Orit Wasserman | int migrate_use_xbzrle(void) |
557 | 17ad9b35 | Orit Wasserman | { |
558 | 17ad9b35 | Orit Wasserman | MigrationState *s; |
559 | 17ad9b35 | Orit Wasserman | |
560 | 17ad9b35 | Orit Wasserman | s = migrate_get_current(); |
561 | 17ad9b35 | Orit Wasserman | |
562 | 17ad9b35 | Orit Wasserman | return s->enabled_capabilities[MIGRATION_CAPABILITY_XBZRLE];
|
563 | 17ad9b35 | Orit Wasserman | } |
564 | 17ad9b35 | Orit Wasserman | |
565 | 17ad9b35 | Orit Wasserman | int64_t migrate_xbzrle_cache_size(void)
|
566 | 17ad9b35 | Orit Wasserman | { |
567 | 17ad9b35 | Orit Wasserman | MigrationState *s; |
568 | 17ad9b35 | Orit Wasserman | |
569 | 17ad9b35 | Orit Wasserman | s = migrate_get_current(); |
570 | 17ad9b35 | Orit Wasserman | |
571 | 17ad9b35 | Orit Wasserman | return s->xbzrle_cache_size;
|
572 | 17ad9b35 | Orit Wasserman | } |
573 | 0d82d0e8 | Juan Quintela | |
574 | 0d82d0e8 | Juan Quintela | /* migration thread support */
|
575 | 0d82d0e8 | Juan Quintela | |
576 | 5f496a1b | Juan Quintela | static void *migration_thread(void *opaque) |
577 | 0d82d0e8 | Juan Quintela | { |
578 | 9848a404 | Juan Quintela | MigrationState *s = opaque; |
579 | bc72ad67 | Alex Bligh | int64_t initial_time = qemu_clock_get_ms(QEMU_CLOCK_REALTIME); |
580 | bc72ad67 | Alex Bligh | int64_t setup_start = qemu_clock_get_ms(QEMU_CLOCK_HOST); |
581 | be7172e2 | Paolo Bonzini | int64_t initial_bytes = 0;
|
582 | 0d82d0e8 | Juan Quintela | int64_t max_size = 0;
|
583 | a3fa1d78 | Paolo Bonzini | int64_t start_time = initial_time; |
584 | a3fa1d78 | Paolo Bonzini | bool old_vm_running = false; |
585 | 76f5933a | Juan Quintela | |
586 | 76f5933a | Juan Quintela | DPRINTF("beginning savevm\n");
|
587 | dba433c0 | Paolo Bonzini | qemu_savevm_state_begin(s->file, &s->params); |
588 | 0d82d0e8 | Juan Quintela | |
589 | bc72ad67 | Alex Bligh | s->setup_time = qemu_clock_get_ms(QEMU_CLOCK_HOST) - setup_start; |
590 | 29ae8a41 | Michael R. Hines | migrate_set_state(s, MIG_STATE_SETUP, MIG_STATE_ACTIVE); |
591 | 29ae8a41 | Michael R. Hines | |
592 | ed4fbd10 | Michael R. Hines | DPRINTF("setup complete\n");
|
593 | ed4fbd10 | Michael R. Hines | |
594 | dba433c0 | Paolo Bonzini | while (s->state == MIG_STATE_ACTIVE) {
|
595 | a3e879cd | Juan Quintela | int64_t current_time; |
596 | c369f40d | Juan Quintela | uint64_t pending_size; |
597 | 0d82d0e8 | Juan Quintela | |
598 | a0ff044b | Paolo Bonzini | if (!qemu_file_rate_limit(s->file)) {
|
599 | c369f40d | Juan Quintela | DPRINTF("iterate\n");
|
600 | c369f40d | Juan Quintela | pending_size = qemu_savevm_state_pending(s->file, max_size); |
601 | 5016e2df | Christoffer Dall | DPRINTF("pending size %" PRIu64 " max %" PRIu64 "\n", |
602 | 5016e2df | Christoffer Dall | pending_size, max_size); |
603 | b22ff1fb | Juan Quintela | if (pending_size && pending_size >= max_size) {
|
604 | dba433c0 | Paolo Bonzini | qemu_savevm_state_iterate(s->file); |
605 | c369f40d | Juan Quintela | } else {
|
606 | 0e1146a7 | Kevin Wolf | int ret;
|
607 | 0e1146a7 | Kevin Wolf | |
608 | c369f40d | Juan Quintela | DPRINTF("done iterating\n");
|
609 | 32c835ba | Paolo Bonzini | qemu_mutex_lock_iothread(); |
610 | bc72ad67 | Alex Bligh | start_time = qemu_clock_get_ms(QEMU_CLOCK_REALTIME); |
611 | c369f40d | Juan Quintela | qemu_system_wakeup_request(QEMU_WAKEUP_REASON_OTHER); |
612 | a3fa1d78 | Paolo Bonzini | old_vm_running = runstate_is_running(); |
613 | 0e1146a7 | Kevin Wolf | |
614 | 0e1146a7 | Kevin Wolf | ret = vm_stop_force_state(RUN_STATE_FINISH_MIGRATE); |
615 | 0e1146a7 | Kevin Wolf | if (ret >= 0) { |
616 | 40596834 | Matthew Garrett | qemu_file_set_rate_limit(s->file, INT64_MAX); |
617 | 0e1146a7 | Kevin Wolf | qemu_savevm_state_complete(s->file); |
618 | 0e1146a7 | Kevin Wolf | } |
619 | 32c835ba | Paolo Bonzini | qemu_mutex_unlock_iothread(); |
620 | 0e1146a7 | Kevin Wolf | |
621 | 0e1146a7 | Kevin Wolf | if (ret < 0) { |
622 | d58f574b | Michael R. Hines | migrate_set_state(s, MIG_STATE_ACTIVE, MIG_STATE_ERROR); |
623 | 0e1146a7 | Kevin Wolf | break;
|
624 | 0e1146a7 | Kevin Wolf | } |
625 | 0e1146a7 | Kevin Wolf | |
626 | 059f896c | Paolo Bonzini | if (!qemu_file_get_error(s->file)) {
|
627 | d58f574b | Michael R. Hines | migrate_set_state(s, MIG_STATE_ACTIVE, MIG_STATE_COMPLETED); |
628 | 059f896c | Paolo Bonzini | break;
|
629 | 059f896c | Paolo Bonzini | } |
630 | c369f40d | Juan Quintela | } |
631 | c369f40d | Juan Quintela | } |
632 | f4410a5d | Paolo Bonzini | |
633 | fd45ee2c | Paolo Bonzini | if (qemu_file_get_error(s->file)) {
|
634 | d58f574b | Michael R. Hines | migrate_set_state(s, MIG_STATE_ACTIVE, MIG_STATE_ERROR); |
635 | fd45ee2c | Paolo Bonzini | break;
|
636 | fd45ee2c | Paolo Bonzini | } |
637 | bc72ad67 | Alex Bligh | current_time = qemu_clock_get_ms(QEMU_CLOCK_REALTIME); |
638 | 0d82d0e8 | Juan Quintela | if (current_time >= initial_time + BUFFER_DELAY) {
|
639 | be7172e2 | Paolo Bonzini | uint64_t transferred_bytes = qemu_ftell(s->file) - initial_bytes; |
640 | 77417f10 | Michael Roth | uint64_t time_spent = current_time - initial_time; |
641 | 0d82d0e8 | Juan Quintela | double bandwidth = transferred_bytes / time_spent;
|
642 | 0d82d0e8 | Juan Quintela | max_size = bandwidth * migrate_max_downtime() / 1000000;
|
643 | 0d82d0e8 | Juan Quintela | |
644 | 7e114f8c | Michael R. Hines | s->mbps = time_spent ? (((double) transferred_bytes * 8.0) / |
645 | 7e114f8c | Michael R. Hines | ((double) time_spent / 1000.0)) / 1000.0 / 1000.0 : -1; |
646 | 7e114f8c | Michael R. Hines | |
647 | 0d82d0e8 | Juan Quintela | DPRINTF("transferred %" PRIu64 " time_spent %" PRIu64 |
648 | 0d82d0e8 | Juan Quintela | " bandwidth %g max_size %" PRId64 "\n", |
649 | 0d82d0e8 | Juan Quintela | transferred_bytes, time_spent, bandwidth, max_size); |
650 | 90f8ae72 | Juan Quintela | /* if we haven't sent anything, we don't want to recalculate
|
651 | 90f8ae72 | Juan Quintela | 10000 is a small enough number for our purposes */
|
652 | 90f8ae72 | Juan Quintela | if (s->dirty_bytes_rate && transferred_bytes > 10000) { |
653 | 90f8ae72 | Juan Quintela | s->expected_downtime = s->dirty_bytes_rate / bandwidth; |
654 | 90f8ae72 | Juan Quintela | } |
655 | 0d82d0e8 | Juan Quintela | |
656 | 1964a397 | Paolo Bonzini | qemu_file_reset_rate_limit(s->file); |
657 | 0d82d0e8 | Juan Quintela | initial_time = current_time; |
658 | be7172e2 | Paolo Bonzini | initial_bytes = qemu_ftell(s->file); |
659 | 0d82d0e8 | Juan Quintela | } |
660 | a0ff044b | Paolo Bonzini | if (qemu_file_rate_limit(s->file)) {
|
661 | 0d82d0e8 | Juan Quintela | /* usleep expects microseconds */
|
662 | 0d82d0e8 | Juan Quintela | g_usleep((initial_time + BUFFER_DELAY - current_time)*1000);
|
663 | 0d82d0e8 | Juan Quintela | } |
664 | a3fa1d78 | Paolo Bonzini | } |
665 | a3fa1d78 | Paolo Bonzini | |
666 | f4410a5d | Paolo Bonzini | qemu_mutex_lock_iothread(); |
667 | a3fa1d78 | Paolo Bonzini | if (s->state == MIG_STATE_COMPLETED) {
|
668 | bc72ad67 | Alex Bligh | int64_t end_time = qemu_clock_get_ms(QEMU_CLOCK_REALTIME); |
669 | a3fa1d78 | Paolo Bonzini | s->total_time = end_time - s->total_time; |
670 | a3fa1d78 | Paolo Bonzini | s->downtime = end_time - start_time; |
671 | a3fa1d78 | Paolo Bonzini | runstate_set(RUN_STATE_POSTMIGRATE); |
672 | a3fa1d78 | Paolo Bonzini | } else {
|
673 | a3fa1d78 | Paolo Bonzini | if (old_vm_running) {
|
674 | a3fa1d78 | Paolo Bonzini | vm_start(); |
675 | dba433c0 | Paolo Bonzini | } |
676 | 0d82d0e8 | Juan Quintela | } |
677 | bb1fadc4 | Paolo Bonzini | qemu_bh_schedule(s->cleanup_bh); |
678 | dba433c0 | Paolo Bonzini | qemu_mutex_unlock_iothread(); |
679 | f4410a5d | Paolo Bonzini | |
680 | 0d82d0e8 | Juan Quintela | return NULL; |
681 | 0d82d0e8 | Juan Quintela | } |
682 | 0d82d0e8 | Juan Quintela | |
683 | 9848a404 | Juan Quintela | void migrate_fd_connect(MigrationState *s)
|
684 | 0d82d0e8 | Juan Quintela | { |
685 | 29ae8a41 | Michael R. Hines | s->state = MIG_STATE_SETUP; |
686 | 29ae8a41 | Michael R. Hines | trace_migrate_set_state(MIG_STATE_SETUP); |
687 | c09e5bb1 | Kazuya Saito | |
688 | cc283e3b | Juan Quintela | /* This is a best 1st approximation. ns to ms */
|
689 | cc283e3b | Juan Quintela | s->expected_downtime = max_downtime/1000000;
|
690 | bb1fadc4 | Paolo Bonzini | s->cleanup_bh = qemu_bh_new(migrate_fd_cleanup, s); |
691 | 0d82d0e8 | Juan Quintela | |
692 | 442773ce | Paolo Bonzini | qemu_file_set_rate_limit(s->file, |
693 | 442773ce | Paolo Bonzini | s->bandwidth_limit / XFER_LIMIT_RATIO); |
694 | 442773ce | Paolo Bonzini | |
695 | 9287ac27 | Stefan Hajnoczi | /* Notify before starting migration thread */
|
696 | 9287ac27 | Stefan Hajnoczi | notifier_list_notify(&migration_state_notifiers, s); |
697 | 9287ac27 | Stefan Hajnoczi | |
698 | 5f496a1b | Juan Quintela | qemu_thread_create(&s->thread, migration_thread, s, |
699 | bb1fadc4 | Paolo Bonzini | QEMU_THREAD_JOINABLE); |
700 | 0d82d0e8 | Juan Quintela | } |