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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 | caf71f86 | Paolo Bonzini | #include "migration/migration.h" |
18 | 83c9089e | Paolo Bonzini | #include "monitor/monitor.h" |
19 | 0d82d0e8 | Juan Quintela | #include "migration/qemu-file.h" |
20 | 9c17d615 | Paolo Bonzini | #include "sysemu/sysemu.h" |
21 | 737e150e | Paolo Bonzini | #include "block/block.h" |
22 | 1de7afc9 | Paolo Bonzini | #include "qemu/sockets.h" |
23 | caf71f86 | Paolo Bonzini | #include "migration/block.h" |
24 | 766bd176 | Juan Quintela | #include "qemu/thread.h" |
25 | 791e7c82 | Luiz Capitulino | #include "qmp-commands.h" |
26 | c09e5bb1 | Kazuya Saito | #include "trace.h" |
27 | 065e2813 | aliguori | |
28 | 065e2813 | aliguori | //#define DEBUG_MIGRATION
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29 | 065e2813 | aliguori | |
30 | 065e2813 | aliguori | #ifdef DEBUG_MIGRATION
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31 | d0f2c4c6 | malc | #define DPRINTF(fmt, ...) \
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32 | 065e2813 | aliguori | do { printf("migration: " fmt, ## __VA_ARGS__); } while (0) |
33 | 065e2813 | aliguori | #else
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34 | d0f2c4c6 | malc | #define DPRINTF(fmt, ...) \
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35 | 065e2813 | aliguori | do { } while (0) |
36 | 065e2813 | aliguori | #endif
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37 | 5bb7910a | aliguori | |
38 | 7dc688ed | Juan Quintela | enum {
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39 | 7dc688ed | Juan Quintela | MIG_STATE_ERROR, |
40 | 7dc688ed | Juan Quintela | MIG_STATE_SETUP, |
41 | 7dc688ed | Juan Quintela | MIG_STATE_CANCELLED, |
42 | 7dc688ed | Juan Quintela | MIG_STATE_ACTIVE, |
43 | 7dc688ed | Juan Quintela | MIG_STATE_COMPLETED, |
44 | 7dc688ed | Juan Quintela | }; |
45 | 5bb7910a | aliguori | |
46 | d0ae46c1 | Juan Quintela | #define MAX_THROTTLE (32 << 20) /* Migration speed throttling */ |
47 | 5bb7910a | aliguori | |
48 | 5b4e1eb7 | Juan Quintela | /* Amount of time to allocate to each "chunk" of bandwidth-throttled
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49 | 5b4e1eb7 | Juan Quintela | * data. */
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50 | 5b4e1eb7 | Juan Quintela | #define BUFFER_DELAY 100 |
51 | 5b4e1eb7 | Juan Quintela | #define XFER_LIMIT_RATIO (1000 / BUFFER_DELAY) |
52 | 5b4e1eb7 | Juan Quintela | |
53 | 17ad9b35 | Orit Wasserman | /* Migration XBZRLE default cache size */
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54 | 17ad9b35 | Orit Wasserman | #define DEFAULT_MIGRATE_CACHE_SIZE (64 * 1024 * 1024) |
55 | 17ad9b35 | Orit Wasserman | |
56 | 99a0db9b | Gerd Hoffmann | static NotifierList migration_state_notifiers =
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57 | 99a0db9b | Gerd Hoffmann | NOTIFIER_LIST_INITIALIZER(migration_state_notifiers); |
58 | 99a0db9b | Gerd Hoffmann | |
59 | 17549e84 | Juan Quintela | /* When we add fault tolerance, we could have several
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60 | 17549e84 | Juan Quintela | migrations at once. For now we don't need to add
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61 | 17549e84 | Juan Quintela | dynamic creation of migration */
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62 | 17549e84 | Juan Quintela | |
63 | 859bc756 | Juan Quintela | MigrationState *migrate_get_current(void)
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64 | 17549e84 | Juan Quintela | { |
65 | 17549e84 | Juan Quintela | static MigrationState current_migration = {
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66 | 17549e84 | Juan Quintela | .state = MIG_STATE_SETUP, |
67 | d0ae46c1 | Juan Quintela | .bandwidth_limit = MAX_THROTTLE, |
68 | 17ad9b35 | Orit Wasserman | .xbzrle_cache_size = DEFAULT_MIGRATE_CACHE_SIZE, |
69 | 7e114f8c | Michael R. Hines | .mbps = -1,
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70 | 17549e84 | Juan Quintela | }; |
71 | 17549e84 | Juan Quintela | |
72 | 17549e84 | Juan Quintela | return ¤t_migration;
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73 | 17549e84 | Juan Quintela | } |
74 | 17549e84 | Juan Quintela | |
75 | 43eaae28 | Paolo Bonzini | void qemu_start_incoming_migration(const char *uri, Error **errp) |
76 | 5bb7910a | aliguori | { |
77 | 34c9dd8e | aliguori | const char *p; |
78 | 34c9dd8e | aliguori | |
79 | 34c9dd8e | aliguori | if (strstart(uri, "tcp:", &p)) |
80 | 43eaae28 | Paolo Bonzini | tcp_start_incoming_migration(p, errp); |
81 | 2da776db | Michael R. Hines | #ifdef CONFIG_RDMA
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82 | 2da776db | Michael R. Hines | else if (strstart(uri, "x-rdma:", &p)) |
83 | 2da776db | Michael R. Hines | rdma_start_incoming_migration(p, errp); |
84 | 2da776db | Michael R. Hines | #endif
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85 | 065e2813 | aliguori | #if !defined(WIN32)
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86 | 065e2813 | aliguori | else if (strstart(uri, "exec:", &p)) |
87 | 43eaae28 | Paolo Bonzini | exec_start_incoming_migration(p, errp); |
88 | 4951f65b | Chris Lalancette | else if (strstart(uri, "unix:", &p)) |
89 | 43eaae28 | Paolo Bonzini | unix_start_incoming_migration(p, errp); |
90 | 5ac1fad3 | Paolo Bonzini | else if (strstart(uri, "fd:", &p)) |
91 | 43eaae28 | Paolo Bonzini | fd_start_incoming_migration(p, errp); |
92 | 065e2813 | aliguori | #endif
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93 | 8ca5e801 | Juan Quintela | else {
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94 | 312fd5f2 | Markus Armbruster | error_setg(errp, "unknown migration protocol: %s", uri);
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95 | 8ca5e801 | Juan Quintela | } |
96 | 5bb7910a | aliguori | } |
97 | 5bb7910a | aliguori | |
98 | 82a4da79 | Paolo Bonzini | static void process_incoming_migration_co(void *opaque) |
99 | 511c0231 | Juan Quintela | { |
100 | 82a4da79 | Paolo Bonzini | QEMUFile *f = opaque; |
101 | 1c12e1f5 | Paolo Bonzini | int ret;
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102 | 1c12e1f5 | Paolo Bonzini | |
103 | 1c12e1f5 | Paolo Bonzini | ret = qemu_loadvm_state(f); |
104 | 1c12e1f5 | Paolo Bonzini | qemu_fclose(f); |
105 | 1c12e1f5 | Paolo Bonzini | if (ret < 0) { |
106 | 511c0231 | Juan Quintela | fprintf(stderr, "load of migration failed\n");
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107 | 4aead692 | Eric Blake | exit(EXIT_FAILURE); |
108 | 511c0231 | Juan Quintela | } |
109 | 511c0231 | Juan Quintela | qemu_announce_self(); |
110 | 511c0231 | Juan Quintela | DPRINTF("successfully loaded vm state\n");
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111 | 511c0231 | Juan Quintela | |
112 | 901862cb | Benoît Canet | bdrv_clear_incoming_migration_all(); |
113 | 0f15423c | Anthony Liguori | /* Make sure all file formats flush their mutable metadata */
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114 | 0f15423c | Anthony Liguori | bdrv_invalidate_cache_all(); |
115 | 0f15423c | Anthony Liguori | |
116 | f5bbfba1 | Luiz Capitulino | if (autostart) {
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117 | 511c0231 | Juan Quintela | vm_start(); |
118 | f5bbfba1 | Luiz Capitulino | } else {
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119 | 29ed72f1 | Paolo Bonzini | runstate_set(RUN_STATE_PAUSED); |
120 | f5bbfba1 | Luiz Capitulino | } |
121 | 511c0231 | Juan Quintela | } |
122 | 511c0231 | Juan Quintela | |
123 | 82a4da79 | Paolo Bonzini | void process_incoming_migration(QEMUFile *f)
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124 | 82a4da79 | Paolo Bonzini | { |
125 | 82a4da79 | Paolo Bonzini | Coroutine *co = qemu_coroutine_create(process_incoming_migration_co); |
126 | 82a4da79 | Paolo Bonzini | int fd = qemu_get_fd(f);
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127 | 82a4da79 | Paolo Bonzini | |
128 | 82a4da79 | Paolo Bonzini | assert(fd != -1);
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129 | f9e8cacc | Stefan Hajnoczi | qemu_set_nonblock(fd); |
130 | 82a4da79 | Paolo Bonzini | qemu_coroutine_enter(co, f); |
131 | 82a4da79 | Paolo Bonzini | } |
132 | 82a4da79 | Paolo Bonzini | |
133 | a0a3fd60 | Glauber Costa | /* amount of nanoseconds we are willing to wait for migration to be down.
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134 | a0a3fd60 | Glauber Costa | * the choice of nanoseconds is because it is the maximum resolution that
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135 | a0a3fd60 | Glauber Costa | * get_clock() can achieve. It is an internal measure. All user-visible
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136 | a0a3fd60 | Glauber Costa | * units must be in seconds */
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137 | a0a3fd60 | Glauber Costa | static uint64_t max_downtime = 30000000; |
138 | a0a3fd60 | Glauber Costa | |
139 | a0a3fd60 | Glauber Costa | uint64_t migrate_max_downtime(void)
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140 | a0a3fd60 | Glauber Costa | { |
141 | a0a3fd60 | Glauber Costa | return max_downtime;
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142 | a0a3fd60 | Glauber Costa | } |
143 | a0a3fd60 | Glauber Costa | |
144 | bbf6da32 | Orit Wasserman | MigrationCapabilityStatusList *qmp_query_migrate_capabilities(Error **errp) |
145 | bbf6da32 | Orit Wasserman | { |
146 | bbf6da32 | Orit Wasserman | MigrationCapabilityStatusList *head = NULL;
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147 | bbf6da32 | Orit Wasserman | MigrationCapabilityStatusList *caps; |
148 | bbf6da32 | Orit Wasserman | MigrationState *s = migrate_get_current(); |
149 | bbf6da32 | Orit Wasserman | int i;
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150 | bbf6da32 | Orit Wasserman | |
151 | bbf6da32 | Orit Wasserman | for (i = 0; i < MIGRATION_CAPABILITY_MAX; i++) { |
152 | bbf6da32 | Orit Wasserman | if (head == NULL) { |
153 | bbf6da32 | Orit Wasserman | head = g_malloc0(sizeof(*caps));
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154 | bbf6da32 | Orit Wasserman | caps = head; |
155 | bbf6da32 | Orit Wasserman | } else {
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156 | bbf6da32 | Orit Wasserman | caps->next = g_malloc0(sizeof(*caps));
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157 | bbf6da32 | Orit Wasserman | caps = caps->next; |
158 | bbf6da32 | Orit Wasserman | } |
159 | bbf6da32 | Orit Wasserman | caps->value = |
160 | bbf6da32 | Orit Wasserman | g_malloc(sizeof(*caps->value));
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161 | bbf6da32 | Orit Wasserman | caps->value->capability = i; |
162 | bbf6da32 | Orit Wasserman | caps->value->state = s->enabled_capabilities[i]; |
163 | bbf6da32 | Orit Wasserman | } |
164 | bbf6da32 | Orit Wasserman | |
165 | bbf6da32 | Orit Wasserman | return head;
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166 | bbf6da32 | Orit Wasserman | } |
167 | bbf6da32 | Orit Wasserman | |
168 | f36d55af | Orit Wasserman | static void get_xbzrle_cache_stats(MigrationInfo *info) |
169 | f36d55af | Orit Wasserman | { |
170 | f36d55af | Orit Wasserman | if (migrate_use_xbzrle()) {
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171 | f36d55af | Orit Wasserman | info->has_xbzrle_cache = true;
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172 | f36d55af | Orit Wasserman | info->xbzrle_cache = g_malloc0(sizeof(*info->xbzrle_cache));
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173 | f36d55af | Orit Wasserman | info->xbzrle_cache->cache_size = migrate_xbzrle_cache_size(); |
174 | f36d55af | Orit Wasserman | info->xbzrle_cache->bytes = xbzrle_mig_bytes_transferred(); |
175 | f36d55af | Orit Wasserman | info->xbzrle_cache->pages = xbzrle_mig_pages_transferred(); |
176 | f36d55af | Orit Wasserman | info->xbzrle_cache->cache_miss = xbzrle_mig_pages_cache_miss(); |
177 | f36d55af | Orit Wasserman | info->xbzrle_cache->overflow = xbzrle_mig_pages_overflow(); |
178 | f36d55af | Orit Wasserman | } |
179 | f36d55af | Orit Wasserman | } |
180 | f36d55af | Orit Wasserman | |
181 | 791e7c82 | Luiz Capitulino | MigrationInfo *qmp_query_migrate(Error **errp) |
182 | 5bb7910a | aliguori | { |
183 | 791e7c82 | Luiz Capitulino | MigrationInfo *info = g_malloc0(sizeof(*info));
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184 | 17549e84 | Juan Quintela | MigrationState *s = migrate_get_current(); |
185 | 17549e84 | Juan Quintela | |
186 | 17549e84 | Juan Quintela | switch (s->state) {
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187 | 17549e84 | Juan Quintela | case MIG_STATE_SETUP:
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188 | 17549e84 | Juan Quintela | /* no migration has happened ever */
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189 | 17549e84 | Juan Quintela | break;
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190 | 17549e84 | Juan Quintela | case MIG_STATE_ACTIVE:
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191 | 791e7c82 | Luiz Capitulino | info->has_status = true;
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192 | 791e7c82 | Luiz Capitulino | info->status = g_strdup("active");
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193 | 7aa939af | Juan Quintela | info->has_total_time = true;
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194 | 7aa939af | Juan Quintela | info->total_time = qemu_get_clock_ms(rt_clock) |
195 | 7aa939af | Juan Quintela | - s->total_time; |
196 | 2c52ddf1 | Juan Quintela | info->has_expected_downtime = true;
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197 | 2c52ddf1 | Juan Quintela | info->expected_downtime = s->expected_downtime; |
198 | 17549e84 | Juan Quintela | |
199 | 791e7c82 | Luiz Capitulino | info->has_ram = true;
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200 | 791e7c82 | Luiz Capitulino | info->ram = g_malloc0(sizeof(*info->ram));
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201 | 791e7c82 | Luiz Capitulino | info->ram->transferred = ram_bytes_transferred(); |
202 | 791e7c82 | Luiz Capitulino | info->ram->remaining = ram_bytes_remaining(); |
203 | 791e7c82 | Luiz Capitulino | info->ram->total = ram_bytes_total(); |
204 | 004d4c10 | Orit Wasserman | info->ram->duplicate = dup_mig_pages_transferred(); |
205 | f1c72795 | Peter Lieven | info->ram->skipped = skipped_mig_pages_transferred(); |
206 | 004d4c10 | Orit Wasserman | info->ram->normal = norm_mig_pages_transferred(); |
207 | 004d4c10 | Orit Wasserman | info->ram->normal_bytes = norm_mig_bytes_transferred(); |
208 | 8d017193 | Juan Quintela | info->ram->dirty_pages_rate = s->dirty_pages_rate; |
209 | 7e114f8c | Michael R. Hines | info->ram->mbps = s->mbps; |
210 | 8d017193 | Juan Quintela | |
211 | 17549e84 | Juan Quintela | if (blk_mig_active()) {
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212 | 791e7c82 | Luiz Capitulino | info->has_disk = true;
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213 | 791e7c82 | Luiz Capitulino | info->disk = g_malloc0(sizeof(*info->disk));
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214 | 791e7c82 | Luiz Capitulino | info->disk->transferred = blk_mig_bytes_transferred(); |
215 | 791e7c82 | Luiz Capitulino | info->disk->remaining = blk_mig_bytes_remaining(); |
216 | 791e7c82 | Luiz Capitulino | info->disk->total = blk_mig_bytes_total(); |
217 | ff8d81d8 | aliguori | } |
218 | f36d55af | Orit Wasserman | |
219 | f36d55af | Orit Wasserman | get_xbzrle_cache_stats(info); |
220 | 17549e84 | Juan Quintela | break;
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221 | 17549e84 | Juan Quintela | case MIG_STATE_COMPLETED:
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222 | f36d55af | Orit Wasserman | get_xbzrle_cache_stats(info); |
223 | f36d55af | Orit Wasserman | |
224 | 791e7c82 | Luiz Capitulino | info->has_status = true;
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225 | 791e7c82 | Luiz Capitulino | info->status = g_strdup("completed");
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226 | 7aa939af | Juan Quintela | info->total_time = s->total_time; |
227 | 9c5a9fcf | Juan Quintela | info->has_downtime = true;
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228 | 9c5a9fcf | Juan Quintela | info->downtime = s->downtime; |
229 | d5f8a570 | Juan Quintela | |
230 | d5f8a570 | Juan Quintela | info->has_ram = true;
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231 | d5f8a570 | Juan Quintela | info->ram = g_malloc0(sizeof(*info->ram));
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232 | d5f8a570 | Juan Quintela | info->ram->transferred = ram_bytes_transferred(); |
233 | d5f8a570 | Juan Quintela | info->ram->remaining = 0;
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234 | d5f8a570 | Juan Quintela | info->ram->total = ram_bytes_total(); |
235 | 004d4c10 | Orit Wasserman | info->ram->duplicate = dup_mig_pages_transferred(); |
236 | f1c72795 | Peter Lieven | info->ram->skipped = skipped_mig_pages_transferred(); |
237 | 004d4c10 | Orit Wasserman | info->ram->normal = norm_mig_pages_transferred(); |
238 | 004d4c10 | Orit Wasserman | info->ram->normal_bytes = norm_mig_bytes_transferred(); |
239 | 7e114f8c | Michael R. Hines | info->ram->mbps = s->mbps; |
240 | 17549e84 | Juan Quintela | break;
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241 | 17549e84 | Juan Quintela | case MIG_STATE_ERROR:
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242 | 791e7c82 | Luiz Capitulino | info->has_status = true;
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243 | 791e7c82 | Luiz Capitulino | info->status = g_strdup("failed");
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244 | 17549e84 | Juan Quintela | break;
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245 | 17549e84 | Juan Quintela | case MIG_STATE_CANCELLED:
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246 | 791e7c82 | Luiz Capitulino | info->has_status = true;
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247 | 791e7c82 | Luiz Capitulino | info->status = g_strdup("cancelled");
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248 | 17549e84 | Juan Quintela | break;
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249 | 5bb7910a | aliguori | } |
250 | 791e7c82 | Luiz Capitulino | |
251 | 791e7c82 | Luiz Capitulino | return info;
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252 | 5bb7910a | aliguori | } |
253 | 5bb7910a | aliguori | |
254 | 00458433 | Orit Wasserman | void qmp_migrate_set_capabilities(MigrationCapabilityStatusList *params,
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255 | 00458433 | Orit Wasserman | Error **errp) |
256 | 00458433 | Orit Wasserman | { |
257 | 00458433 | Orit Wasserman | MigrationState *s = migrate_get_current(); |
258 | 00458433 | Orit Wasserman | MigrationCapabilityStatusList *cap; |
259 | 00458433 | Orit Wasserman | |
260 | 00458433 | Orit Wasserman | if (s->state == MIG_STATE_ACTIVE) {
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261 | 00458433 | Orit Wasserman | error_set(errp, QERR_MIGRATION_ACTIVE); |
262 | 00458433 | Orit Wasserman | return;
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263 | 00458433 | Orit Wasserman | } |
264 | 00458433 | Orit Wasserman | |
265 | 00458433 | Orit Wasserman | for (cap = params; cap; cap = cap->next) {
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266 | 00458433 | Orit Wasserman | s->enabled_capabilities[cap->value->capability] = cap->value->state; |
267 | 00458433 | Orit Wasserman | } |
268 | 00458433 | Orit Wasserman | } |
269 | 00458433 | Orit Wasserman | |
270 | 065e2813 | aliguori | /* shared migration helpers */
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271 | 065e2813 | aliguori | |
272 | bb1fadc4 | Paolo Bonzini | static void migrate_fd_cleanup(void *opaque) |
273 | 065e2813 | aliguori | { |
274 | bb1fadc4 | Paolo Bonzini | MigrationState *s = opaque; |
275 | bb1fadc4 | Paolo Bonzini | |
276 | bb1fadc4 | Paolo Bonzini | qemu_bh_delete(s->cleanup_bh); |
277 | bb1fadc4 | Paolo Bonzini | s->cleanup_bh = NULL;
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278 | bb1fadc4 | Paolo Bonzini | |
279 | 065e2813 | aliguori | if (s->file) {
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280 | d0f2c4c6 | malc | DPRINTF("closing file\n");
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281 | 404a7c05 | Paolo Bonzini | qemu_mutex_unlock_iothread(); |
282 | 404a7c05 | Paolo Bonzini | qemu_thread_join(&s->thread); |
283 | 404a7c05 | Paolo Bonzini | qemu_mutex_lock_iothread(); |
284 | 404a7c05 | Paolo Bonzini | |
285 | 6f190a06 | Paolo Bonzini | qemu_fclose(s->file); |
286 | 6f190a06 | Paolo Bonzini | s->file = NULL;
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287 | 065e2813 | aliguori | } |
288 | 065e2813 | aliguori | |
289 | a3fa1d78 | Paolo Bonzini | assert(s->state != MIG_STATE_ACTIVE); |
290 | 7a2c1721 | Paolo Bonzini | |
291 | a3fa1d78 | Paolo Bonzini | if (s->state != MIG_STATE_COMPLETED) {
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292 | 7a2c1721 | Paolo Bonzini | qemu_savevm_state_cancel(); |
293 | 7a2c1721 | Paolo Bonzini | } |
294 | a3fa1d78 | Paolo Bonzini | |
295 | a3fa1d78 | Paolo Bonzini | notifier_list_notify(&migration_state_notifiers, s); |
296 | 065e2813 | aliguori | } |
297 | 065e2813 | aliguori | |
298 | f4410a5d | Paolo Bonzini | static void migrate_finish_set_state(MigrationState *s, int new_state) |
299 | f4410a5d | Paolo Bonzini | { |
300 | 5444e768 | Paolo Bonzini | if (atomic_cmpxchg(&s->state, MIG_STATE_ACTIVE, new_state) == new_state) {
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301 | f4410a5d | Paolo Bonzini | trace_migrate_set_state(new_state); |
302 | f4410a5d | Paolo Bonzini | } |
303 | f4410a5d | Paolo Bonzini | } |
304 | f4410a5d | Paolo Bonzini | |
305 | 8b6b99b3 | Juan Quintela | void migrate_fd_error(MigrationState *s)
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306 | 065e2813 | aliguori | { |
307 | 8b6b99b3 | Juan Quintela | DPRINTF("setting error state\n");
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308 | bb1fadc4 | Paolo Bonzini | assert(s->file == NULL);
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309 | bb1fadc4 | Paolo Bonzini | s->state = MIG_STATE_ERROR; |
310 | bb1fadc4 | Paolo Bonzini | trace_migrate_set_state(MIG_STATE_ERROR); |
311 | bb1fadc4 | Paolo Bonzini | notifier_list_notify(&migration_state_notifiers, s); |
312 | 458cf28e | Juan Quintela | } |
313 | 458cf28e | Juan Quintela | |
314 | 0edda1c4 | Juan Quintela | static void migrate_fd_cancel(MigrationState *s) |
315 | 065e2813 | aliguori | { |
316 | d0f2c4c6 | malc | DPRINTF("cancelling migration\n");
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317 | 065e2813 | aliguori | |
318 | f4410a5d | Paolo Bonzini | migrate_finish_set_state(s, MIG_STATE_CANCELLED); |
319 | 065e2813 | aliguori | } |
320 | 065e2813 | aliguori | |
321 | 99a0db9b | Gerd Hoffmann | void add_migration_state_change_notifier(Notifier *notify)
|
322 | 99a0db9b | Gerd Hoffmann | { |
323 | 99a0db9b | Gerd Hoffmann | notifier_list_add(&migration_state_notifiers, notify); |
324 | 99a0db9b | Gerd Hoffmann | } |
325 | 99a0db9b | Gerd Hoffmann | |
326 | 99a0db9b | Gerd Hoffmann | void remove_migration_state_change_notifier(Notifier *notify)
|
327 | 99a0db9b | Gerd Hoffmann | { |
328 | 31552529 | Paolo Bonzini | notifier_remove(notify); |
329 | 99a0db9b | Gerd Hoffmann | } |
330 | 99a0db9b | Gerd Hoffmann | |
331 | afe2df69 | Gerd Hoffmann | bool migration_is_active(MigrationState *s)
|
332 | afe2df69 | Gerd Hoffmann | { |
333 | afe2df69 | Gerd Hoffmann | return s->state == MIG_STATE_ACTIVE;
|
334 | afe2df69 | Gerd Hoffmann | } |
335 | afe2df69 | Gerd Hoffmann | |
336 | 7073693b | Juan Quintela | bool migration_has_finished(MigrationState *s)
|
337 | 99a0db9b | Gerd Hoffmann | { |
338 | 7073693b | Juan Quintela | return s->state == MIG_STATE_COMPLETED;
|
339 | 99a0db9b | Gerd Hoffmann | } |
340 | 0edda1c4 | Juan Quintela | |
341 | afe2df69 | Gerd Hoffmann | bool migration_has_failed(MigrationState *s)
|
342 | afe2df69 | Gerd Hoffmann | { |
343 | afe2df69 | Gerd Hoffmann | return (s->state == MIG_STATE_CANCELLED ||
|
344 | afe2df69 | Gerd Hoffmann | s->state == MIG_STATE_ERROR); |
345 | afe2df69 | Gerd Hoffmann | } |
346 | afe2df69 | Gerd Hoffmann | |
347 | 6607ae23 | Isaku Yamahata | static MigrationState *migrate_init(const MigrationParams *params) |
348 | 0edda1c4 | Juan Quintela | { |
349 | 17549e84 | Juan Quintela | MigrationState *s = migrate_get_current(); |
350 | d0ae46c1 | Juan Quintela | int64_t bandwidth_limit = s->bandwidth_limit; |
351 | bbf6da32 | Orit Wasserman | bool enabled_capabilities[MIGRATION_CAPABILITY_MAX];
|
352 | 17ad9b35 | Orit Wasserman | int64_t xbzrle_cache_size = s->xbzrle_cache_size; |
353 | bbf6da32 | Orit Wasserman | |
354 | bbf6da32 | Orit Wasserman | memcpy(enabled_capabilities, s->enabled_capabilities, |
355 | bbf6da32 | Orit Wasserman | sizeof(enabled_capabilities));
|
356 | 0edda1c4 | Juan Quintela | |
357 | 17549e84 | Juan Quintela | memset(s, 0, sizeof(*s)); |
358 | 6607ae23 | Isaku Yamahata | s->params = *params; |
359 | bbf6da32 | Orit Wasserman | memcpy(s->enabled_capabilities, enabled_capabilities, |
360 | bbf6da32 | Orit Wasserman | sizeof(enabled_capabilities));
|
361 | 17ad9b35 | Orit Wasserman | s->xbzrle_cache_size = xbzrle_cache_size; |
362 | 1299c631 | Juan Quintela | |
363 | 0edda1c4 | Juan Quintela | s->bandwidth_limit = bandwidth_limit; |
364 | d5934dde | Juan Quintela | s->state = MIG_STATE_SETUP; |
365 | c09e5bb1 | Kazuya Saito | trace_migrate_set_state(MIG_STATE_SETUP); |
366 | 0edda1c4 | Juan Quintela | |
367 | c09e5bb1 | Kazuya Saito | s->total_time = qemu_get_clock_ms(rt_clock); |
368 | 0edda1c4 | Juan Quintela | return s;
|
369 | 0edda1c4 | Juan Quintela | } |
370 | cab30143 | Juan Quintela | |
371 | fa2756b7 | Anthony Liguori | static GSList *migration_blockers;
|
372 | fa2756b7 | Anthony Liguori | |
373 | fa2756b7 | Anthony Liguori | void migrate_add_blocker(Error *reason)
|
374 | fa2756b7 | Anthony Liguori | { |
375 | fa2756b7 | Anthony Liguori | migration_blockers = g_slist_prepend(migration_blockers, reason); |
376 | fa2756b7 | Anthony Liguori | } |
377 | fa2756b7 | Anthony Liguori | |
378 | fa2756b7 | Anthony Liguori | void migrate_del_blocker(Error *reason)
|
379 | fa2756b7 | Anthony Liguori | { |
380 | fa2756b7 | Anthony Liguori | migration_blockers = g_slist_remove(migration_blockers, reason); |
381 | fa2756b7 | Anthony Liguori | } |
382 | fa2756b7 | Anthony Liguori | |
383 | e1c37d0e | Luiz Capitulino | void qmp_migrate(const char *uri, bool has_blk, bool blk, |
384 | e1c37d0e | Luiz Capitulino | bool has_inc, bool inc, bool has_detach, bool detach, |
385 | e1c37d0e | Luiz Capitulino | Error **errp) |
386 | cab30143 | Juan Quintela | { |
387 | be7059cd | Paolo Bonzini | Error *local_err = NULL;
|
388 | 17549e84 | Juan Quintela | MigrationState *s = migrate_get_current(); |
389 | 6607ae23 | Isaku Yamahata | MigrationParams params; |
390 | cab30143 | Juan Quintela | const char *p; |
391 | cab30143 | Juan Quintela | |
392 | 6607ae23 | Isaku Yamahata | params.blk = blk; |
393 | 6607ae23 | Isaku Yamahata | params.shared = inc; |
394 | 6607ae23 | Isaku Yamahata | |
395 | 17549e84 | Juan Quintela | if (s->state == MIG_STATE_ACTIVE) {
|
396 | e1c37d0e | Luiz Capitulino | error_set(errp, QERR_MIGRATION_ACTIVE); |
397 | e1c37d0e | Luiz Capitulino | return;
|
398 | cab30143 | Juan Quintela | } |
399 | cab30143 | Juan Quintela | |
400 | e1c37d0e | Luiz Capitulino | if (qemu_savevm_state_blocked(errp)) {
|
401 | e1c37d0e | Luiz Capitulino | return;
|
402 | cab30143 | Juan Quintela | } |
403 | cab30143 | Juan Quintela | |
404 | fa2756b7 | Anthony Liguori | if (migration_blockers) {
|
405 | e1c37d0e | Luiz Capitulino | *errp = error_copy(migration_blockers->data); |
406 | e1c37d0e | Luiz Capitulino | return;
|
407 | fa2756b7 | Anthony Liguori | } |
408 | fa2756b7 | Anthony Liguori | |
409 | 6607ae23 | Isaku Yamahata | s = migrate_init(¶ms); |
410 | cab30143 | Juan Quintela | |
411 | cab30143 | Juan Quintela | if (strstart(uri, "tcp:", &p)) { |
412 | f37afb5a | Paolo Bonzini | tcp_start_outgoing_migration(s, p, &local_err); |
413 | 2da776db | Michael R. Hines | #ifdef CONFIG_RDMA
|
414 | 2da776db | Michael R. Hines | } else if (strstart(uri, "x-rdma:", &p)) { |
415 | 2da776db | Michael R. Hines | rdma_start_outgoing_migration(s, p, &local_err); |
416 | 2da776db | Michael R. Hines | #endif
|
417 | cab30143 | Juan Quintela | #if !defined(WIN32)
|
418 | cab30143 | Juan Quintela | } else if (strstart(uri, "exec:", &p)) { |
419 | f37afb5a | Paolo Bonzini | exec_start_outgoing_migration(s, p, &local_err); |
420 | cab30143 | Juan Quintela | } else if (strstart(uri, "unix:", &p)) { |
421 | f37afb5a | Paolo Bonzini | unix_start_outgoing_migration(s, p, &local_err); |
422 | cab30143 | Juan Quintela | } else if (strstart(uri, "fd:", &p)) { |
423 | f37afb5a | Paolo Bonzini | fd_start_outgoing_migration(s, p, &local_err); |
424 | cab30143 | Juan Quintela | #endif
|
425 | 99a0db9b | Gerd Hoffmann | } else {
|
426 | e1c37d0e | Luiz Capitulino | error_set(errp, QERR_INVALID_PARAMETER_VALUE, "uri", "a valid migration protocol"); |
427 | e1c37d0e | Luiz Capitulino | return;
|
428 | cab30143 | Juan Quintela | } |
429 | cab30143 | Juan Quintela | |
430 | f37afb5a | Paolo Bonzini | if (local_err) {
|
431 | 342ab8d1 | Paolo Bonzini | migrate_fd_error(s); |
432 | f37afb5a | Paolo Bonzini | error_propagate(errp, local_err); |
433 | e1c37d0e | Luiz Capitulino | return;
|
434 | 1299c631 | Juan Quintela | } |
435 | cab30143 | Juan Quintela | } |
436 | cab30143 | Juan Quintela | |
437 | 6cdedb07 | Luiz Capitulino | void qmp_migrate_cancel(Error **errp)
|
438 | cab30143 | Juan Quintela | { |
439 | 17549e84 | Juan Quintela | migrate_fd_cancel(migrate_get_current()); |
440 | cab30143 | Juan Quintela | } |
441 | cab30143 | Juan Quintela | |
442 | 9e1ba4cc | Orit Wasserman | void qmp_migrate_set_cache_size(int64_t value, Error **errp)
|
443 | 9e1ba4cc | Orit Wasserman | { |
444 | 9e1ba4cc | Orit Wasserman | MigrationState *s = migrate_get_current(); |
445 | 9e1ba4cc | Orit Wasserman | |
446 | 9e1ba4cc | Orit Wasserman | /* Check for truncation */
|
447 | 9e1ba4cc | Orit Wasserman | if (value != (size_t)value) {
|
448 | 9e1ba4cc | Orit Wasserman | error_set(errp, QERR_INVALID_PARAMETER_VALUE, "cache size",
|
449 | 9e1ba4cc | Orit Wasserman | "exceeding address space");
|
450 | 9e1ba4cc | Orit Wasserman | return;
|
451 | 9e1ba4cc | Orit Wasserman | } |
452 | 9e1ba4cc | Orit Wasserman | |
453 | 9e1ba4cc | Orit Wasserman | s->xbzrle_cache_size = xbzrle_cache_resize(value); |
454 | 9e1ba4cc | Orit Wasserman | } |
455 | 9e1ba4cc | Orit Wasserman | |
456 | 9e1ba4cc | Orit Wasserman | int64_t qmp_query_migrate_cache_size(Error **errp) |
457 | 9e1ba4cc | Orit Wasserman | { |
458 | 9e1ba4cc | Orit Wasserman | return migrate_xbzrle_cache_size();
|
459 | 9e1ba4cc | Orit Wasserman | } |
460 | 9e1ba4cc | Orit Wasserman | |
461 | 3dc85383 | Luiz Capitulino | void qmp_migrate_set_speed(int64_t value, Error **errp)
|
462 | cab30143 | Juan Quintela | { |
463 | cab30143 | Juan Quintela | MigrationState *s; |
464 | cab30143 | Juan Quintela | |
465 | 3dc85383 | Luiz Capitulino | if (value < 0) { |
466 | 3dc85383 | Luiz Capitulino | value = 0;
|
467 | 99a0db9b | Gerd Hoffmann | } |
468 | 442773ce | Paolo Bonzini | if (value > SIZE_MAX) {
|
469 | 442773ce | Paolo Bonzini | value = SIZE_MAX; |
470 | 442773ce | Paolo Bonzini | } |
471 | cab30143 | Juan Quintela | |
472 | 17549e84 | Juan Quintela | s = migrate_get_current(); |
473 | 3dc85383 | Luiz Capitulino | s->bandwidth_limit = value; |
474 | 442773ce | Paolo Bonzini | if (s->file) {
|
475 | 442773ce | Paolo Bonzini | qemu_file_set_rate_limit(s->file, s->bandwidth_limit / XFER_LIMIT_RATIO); |
476 | 442773ce | Paolo Bonzini | } |
477 | cab30143 | Juan Quintela | } |
478 | cab30143 | Juan Quintela | |
479 | 4f0a993b | Luiz Capitulino | void qmp_migrate_set_downtime(double value, Error **errp) |
480 | cab30143 | Juan Quintela | { |
481 | 4f0a993b | Luiz Capitulino | value *= 1e9;
|
482 | 4f0a993b | Luiz Capitulino | value = MAX(0, MIN(UINT64_MAX, value));
|
483 | 4f0a993b | Luiz Capitulino | max_downtime = (uint64_t)value; |
484 | 99a0db9b | Gerd Hoffmann | } |
485 | 17ad9b35 | Orit Wasserman | |
486 | 60d9222c | Michael R. Hines | bool migrate_rdma_pin_all(void) |
487 | 60d9222c | Michael R. Hines | { |
488 | 60d9222c | Michael R. Hines | MigrationState *s; |
489 | 60d9222c | Michael R. Hines | |
490 | 60d9222c | Michael R. Hines | s = migrate_get_current(); |
491 | 60d9222c | Michael R. Hines | |
492 | 60d9222c | Michael R. Hines | return s->enabled_capabilities[MIGRATION_CAPABILITY_X_RDMA_PIN_ALL];
|
493 | 60d9222c | Michael R. Hines | } |
494 | 60d9222c | Michael R. Hines | |
495 | bde1e2ec | Chegu Vinod | bool migrate_auto_converge(void) |
496 | bde1e2ec | Chegu Vinod | { |
497 | bde1e2ec | Chegu Vinod | MigrationState *s; |
498 | bde1e2ec | Chegu Vinod | |
499 | bde1e2ec | Chegu Vinod | s = migrate_get_current(); |
500 | bde1e2ec | Chegu Vinod | |
501 | bde1e2ec | Chegu Vinod | return s->enabled_capabilities[MIGRATION_CAPABILITY_AUTO_CONVERGE];
|
502 | bde1e2ec | Chegu Vinod | } |
503 | bde1e2ec | Chegu Vinod | |
504 | 323004a3 | Peter Lieven | bool migrate_zero_blocks(void) |
505 | 323004a3 | Peter Lieven | { |
506 | 323004a3 | Peter Lieven | MigrationState *s; |
507 | 323004a3 | Peter Lieven | |
508 | 323004a3 | Peter Lieven | s = migrate_get_current(); |
509 | 323004a3 | Peter Lieven | |
510 | 323004a3 | Peter Lieven | return s->enabled_capabilities[MIGRATION_CAPABILITY_ZERO_BLOCKS];
|
511 | 323004a3 | Peter Lieven | } |
512 | 323004a3 | Peter Lieven | |
513 | 17ad9b35 | Orit Wasserman | int migrate_use_xbzrle(void) |
514 | 17ad9b35 | Orit Wasserman | { |
515 | 17ad9b35 | Orit Wasserman | MigrationState *s; |
516 | 17ad9b35 | Orit Wasserman | |
517 | 17ad9b35 | Orit Wasserman | s = migrate_get_current(); |
518 | 17ad9b35 | Orit Wasserman | |
519 | 17ad9b35 | Orit Wasserman | return s->enabled_capabilities[MIGRATION_CAPABILITY_XBZRLE];
|
520 | 17ad9b35 | Orit Wasserman | } |
521 | 17ad9b35 | Orit Wasserman | |
522 | 17ad9b35 | Orit Wasserman | int64_t migrate_xbzrle_cache_size(void)
|
523 | 17ad9b35 | Orit Wasserman | { |
524 | 17ad9b35 | Orit Wasserman | MigrationState *s; |
525 | 17ad9b35 | Orit Wasserman | |
526 | 17ad9b35 | Orit Wasserman | s = migrate_get_current(); |
527 | 17ad9b35 | Orit Wasserman | |
528 | 17ad9b35 | Orit Wasserman | return s->xbzrle_cache_size;
|
529 | 17ad9b35 | Orit Wasserman | } |
530 | 0d82d0e8 | Juan Quintela | |
531 | 0d82d0e8 | Juan Quintela | /* migration thread support */
|
532 | 0d82d0e8 | Juan Quintela | |
533 | 5f496a1b | Juan Quintela | static void *migration_thread(void *opaque) |
534 | 0d82d0e8 | Juan Quintela | { |
535 | 9848a404 | Juan Quintela | MigrationState *s = opaque; |
536 | 0d82d0e8 | Juan Quintela | int64_t initial_time = qemu_get_clock_ms(rt_clock); |
537 | be7172e2 | Paolo Bonzini | int64_t initial_bytes = 0;
|
538 | 0d82d0e8 | Juan Quintela | int64_t max_size = 0;
|
539 | a3fa1d78 | Paolo Bonzini | int64_t start_time = initial_time; |
540 | a3fa1d78 | Paolo Bonzini | bool old_vm_running = false; |
541 | 76f5933a | Juan Quintela | |
542 | 76f5933a | Juan Quintela | DPRINTF("beginning savevm\n");
|
543 | dba433c0 | Paolo Bonzini | qemu_savevm_state_begin(s->file, &s->params); |
544 | 0d82d0e8 | Juan Quintela | |
545 | dba433c0 | Paolo Bonzini | while (s->state == MIG_STATE_ACTIVE) {
|
546 | a3e879cd | Juan Quintela | int64_t current_time; |
547 | c369f40d | Juan Quintela | uint64_t pending_size; |
548 | 0d82d0e8 | Juan Quintela | |
549 | a0ff044b | Paolo Bonzini | if (!qemu_file_rate_limit(s->file)) {
|
550 | c369f40d | Juan Quintela | DPRINTF("iterate\n");
|
551 | c369f40d | Juan Quintela | pending_size = qemu_savevm_state_pending(s->file, max_size); |
552 | c369f40d | Juan Quintela | DPRINTF("pending size %lu max %lu\n", pending_size, max_size);
|
553 | b22ff1fb | Juan Quintela | if (pending_size && pending_size >= max_size) {
|
554 | dba433c0 | Paolo Bonzini | qemu_savevm_state_iterate(s->file); |
555 | c369f40d | Juan Quintela | } else {
|
556 | 0e1146a7 | Kevin Wolf | int ret;
|
557 | 0e1146a7 | Kevin Wolf | |
558 | c369f40d | Juan Quintela | DPRINTF("done iterating\n");
|
559 | 32c835ba | Paolo Bonzini | qemu_mutex_lock_iothread(); |
560 | c369f40d | Juan Quintela | start_time = qemu_get_clock_ms(rt_clock); |
561 | c369f40d | Juan Quintela | qemu_system_wakeup_request(QEMU_WAKEUP_REASON_OTHER); |
562 | a3fa1d78 | Paolo Bonzini | old_vm_running = runstate_is_running(); |
563 | 0e1146a7 | Kevin Wolf | |
564 | 0e1146a7 | Kevin Wolf | ret = vm_stop_force_state(RUN_STATE_FINISH_MIGRATE); |
565 | 0e1146a7 | Kevin Wolf | if (ret >= 0) { |
566 | 0e1146a7 | Kevin Wolf | qemu_file_set_rate_limit(s->file, INT_MAX); |
567 | 0e1146a7 | Kevin Wolf | qemu_savevm_state_complete(s->file); |
568 | 0e1146a7 | Kevin Wolf | } |
569 | 32c835ba | Paolo Bonzini | qemu_mutex_unlock_iothread(); |
570 | 0e1146a7 | Kevin Wolf | |
571 | 0e1146a7 | Kevin Wolf | if (ret < 0) { |
572 | 0e1146a7 | Kevin Wolf | migrate_finish_set_state(s, MIG_STATE_ERROR); |
573 | 0e1146a7 | Kevin Wolf | break;
|
574 | 0e1146a7 | Kevin Wolf | } |
575 | 0e1146a7 | Kevin Wolf | |
576 | 059f896c | Paolo Bonzini | if (!qemu_file_get_error(s->file)) {
|
577 | 059f896c | Paolo Bonzini | migrate_finish_set_state(s, MIG_STATE_COMPLETED); |
578 | 059f896c | Paolo Bonzini | break;
|
579 | 059f896c | Paolo Bonzini | } |
580 | c369f40d | Juan Quintela | } |
581 | c369f40d | Juan Quintela | } |
582 | f4410a5d | Paolo Bonzini | |
583 | fd45ee2c | Paolo Bonzini | if (qemu_file_get_error(s->file)) {
|
584 | fd45ee2c | Paolo Bonzini | migrate_finish_set_state(s, MIG_STATE_ERROR); |
585 | fd45ee2c | Paolo Bonzini | break;
|
586 | fd45ee2c | Paolo Bonzini | } |
587 | a3e879cd | Juan Quintela | current_time = qemu_get_clock_ms(rt_clock); |
588 | 0d82d0e8 | Juan Quintela | if (current_time >= initial_time + BUFFER_DELAY) {
|
589 | be7172e2 | Paolo Bonzini | uint64_t transferred_bytes = qemu_ftell(s->file) - initial_bytes; |
590 | 77417f10 | Michael Roth | uint64_t time_spent = current_time - initial_time; |
591 | 0d82d0e8 | Juan Quintela | double bandwidth = transferred_bytes / time_spent;
|
592 | 0d82d0e8 | Juan Quintela | max_size = bandwidth * migrate_max_downtime() / 1000000;
|
593 | 0d82d0e8 | Juan Quintela | |
594 | 7e114f8c | Michael R. Hines | s->mbps = time_spent ? (((double) transferred_bytes * 8.0) / |
595 | 7e114f8c | Michael R. Hines | ((double) time_spent / 1000.0)) / 1000.0 / 1000.0 : -1; |
596 | 7e114f8c | Michael R. Hines | |
597 | 0d82d0e8 | Juan Quintela | DPRINTF("transferred %" PRIu64 " time_spent %" PRIu64 |
598 | 0d82d0e8 | Juan Quintela | " bandwidth %g max_size %" PRId64 "\n", |
599 | 0d82d0e8 | Juan Quintela | transferred_bytes, time_spent, bandwidth, max_size); |
600 | 90f8ae72 | Juan Quintela | /* if we haven't sent anything, we don't want to recalculate
|
601 | 90f8ae72 | Juan Quintela | 10000 is a small enough number for our purposes */
|
602 | 90f8ae72 | Juan Quintela | if (s->dirty_bytes_rate && transferred_bytes > 10000) { |
603 | 90f8ae72 | Juan Quintela | s->expected_downtime = s->dirty_bytes_rate / bandwidth; |
604 | 90f8ae72 | Juan Quintela | } |
605 | 0d82d0e8 | Juan Quintela | |
606 | 1964a397 | Paolo Bonzini | qemu_file_reset_rate_limit(s->file); |
607 | 0d82d0e8 | Juan Quintela | initial_time = current_time; |
608 | be7172e2 | Paolo Bonzini | initial_bytes = qemu_ftell(s->file); |
609 | 0d82d0e8 | Juan Quintela | } |
610 | a0ff044b | Paolo Bonzini | if (qemu_file_rate_limit(s->file)) {
|
611 | 0d82d0e8 | Juan Quintela | /* usleep expects microseconds */
|
612 | 0d82d0e8 | Juan Quintela | g_usleep((initial_time + BUFFER_DELAY - current_time)*1000);
|
613 | 0d82d0e8 | Juan Quintela | } |
614 | a3fa1d78 | Paolo Bonzini | } |
615 | a3fa1d78 | Paolo Bonzini | |
616 | f4410a5d | Paolo Bonzini | qemu_mutex_lock_iothread(); |
617 | a3fa1d78 | Paolo Bonzini | if (s->state == MIG_STATE_COMPLETED) {
|
618 | a3fa1d78 | Paolo Bonzini | int64_t end_time = qemu_get_clock_ms(rt_clock); |
619 | a3fa1d78 | Paolo Bonzini | s->total_time = end_time - s->total_time; |
620 | a3fa1d78 | Paolo Bonzini | s->downtime = end_time - start_time; |
621 | a3fa1d78 | Paolo Bonzini | runstate_set(RUN_STATE_POSTMIGRATE); |
622 | a3fa1d78 | Paolo Bonzini | } else {
|
623 | a3fa1d78 | Paolo Bonzini | if (old_vm_running) {
|
624 | a3fa1d78 | Paolo Bonzini | vm_start(); |
625 | dba433c0 | Paolo Bonzini | } |
626 | 0d82d0e8 | Juan Quintela | } |
627 | bb1fadc4 | Paolo Bonzini | qemu_bh_schedule(s->cleanup_bh); |
628 | dba433c0 | Paolo Bonzini | qemu_mutex_unlock_iothread(); |
629 | f4410a5d | Paolo Bonzini | |
630 | 0d82d0e8 | Juan Quintela | return NULL; |
631 | 0d82d0e8 | Juan Quintela | } |
632 | 0d82d0e8 | Juan Quintela | |
633 | 9848a404 | Juan Quintela | void migrate_fd_connect(MigrationState *s)
|
634 | 0d82d0e8 | Juan Quintela | { |
635 | 9848a404 | Juan Quintela | s->state = MIG_STATE_ACTIVE; |
636 | c09e5bb1 | Kazuya Saito | trace_migrate_set_state(MIG_STATE_ACTIVE); |
637 | c09e5bb1 | Kazuya Saito | |
638 | cc283e3b | Juan Quintela | /* This is a best 1st approximation. ns to ms */
|
639 | cc283e3b | Juan Quintela | s->expected_downtime = max_downtime/1000000;
|
640 | bb1fadc4 | Paolo Bonzini | s->cleanup_bh = qemu_bh_new(migrate_fd_cleanup, s); |
641 | 0d82d0e8 | Juan Quintela | |
642 | 442773ce | Paolo Bonzini | qemu_file_set_rate_limit(s->file, |
643 | 442773ce | Paolo Bonzini | s->bandwidth_limit / XFER_LIMIT_RATIO); |
644 | 442773ce | Paolo Bonzini | |
645 | 5f496a1b | Juan Quintela | qemu_thread_create(&s->thread, migration_thread, s, |
646 | bb1fadc4 | Paolo Bonzini | QEMU_THREAD_JOINABLE); |
647 | 0d3b26f5 | Juan Quintela | notifier_list_notify(&migration_state_notifiers, s); |
648 | 0d82d0e8 | Juan Quintela | } |