| 1 | /* |
| 2 | * QEMU migration capabilities |
| 3 | * |
| 4 | * Copyright (c) 2012-2023 Red Hat Inc |
| 5 | * |
| 6 | * Authors: |
| 7 | * Orit Wasserman <owasserm@redhat.com> |
| 8 | * Juan Quintela <quintela@redhat.com> |
| 9 | * |
| 10 | * This work is licensed under the terms of the GNU GPL, version 2 or later. |
| 11 | * See the COPYING file in the top-level directory. |
| 12 | */ |
| 13 | |
| 14 | #include "qemu/osdep.h" |
| 15 | #include "qemu/error-report.h" |
| 16 | #include "qemu/units.h" |
| 17 | #include "exec/target_page.h" |
| 18 | #include "qapi/clone-visitor.h" |
| 19 | #include "qapi/error.h" |
| 20 | #include "qapi/qapi-commands-migration.h" |
| 21 | #include "qapi/qapi-visit-migration.h" |
| 22 | #include "qapi/qmp/qerror.h" |
| 23 | #include "qobject/qnull.h" |
| 24 | #include "system/runstate.h" |
| 25 | #include "migration/colo.h" |
| 26 | #include "migration/cpr.h" |
| 27 | #include "migration/misc.h" |
| 28 | #include "migration.h" |
| 29 | #include "migration-stats.h" |
| 30 | #include "qemu-file.h" |
| 31 | #include "ram.h" |
| 32 | #include "options.h" |
| 33 | #include "system/kvm.h" |
| 34 | |
| 35 | /* Maximum migrate downtime set to 2000 seconds */ |
| 36 | #define MAX_MIGRATE_DOWNTIME_SECONDS 2000 |
| 37 | #define MAX_MIGRATE_DOWNTIME (MAX_MIGRATE_DOWNTIME_SECONDS * 1000) |
| 38 | |
| 39 | #define MAX_THROTTLE (128 << 20) /* Migration transfer speed throttling */ |
| 40 | |
| 41 | /* Time in milliseconds we are allowed to stop the source, |
| 42 | * for sending the last part */ |
| 43 | #define DEFAULT_MIGRATE_SET_DOWNTIME 300 |
| 44 | |
| 45 | /* Define default autoconverge cpu throttle migration parameters */ |
| 46 | #define DEFAULT_MIGRATE_THROTTLE_TRIGGER_THRESHOLD 50 |
| 47 | #define DEFAULT_MIGRATE_CPU_THROTTLE_INITIAL 20 |
| 48 | #define DEFAULT_MIGRATE_CPU_THROTTLE_INCREMENT 10 |
| 49 | #define DEFAULT_MIGRATE_MAX_CPU_THROTTLE 99 |
| 50 | |
| 51 | /* Migration XBZRLE default cache size */ |
| 52 | #define DEFAULT_MIGRATE_XBZRLE_CACHE_SIZE (64 * 1024 * 1024) |
| 53 | |
| 54 | /* The delay time (in ms) between two COLO checkpoints */ |
| 55 | #define DEFAULT_MIGRATE_X_CHECKPOINT_DELAY (200 * 100) |
| 56 | #define DEFAULT_MIGRATE_MULTIFD_CHANNELS 2 |
| 57 | #define DEFAULT_MIGRATE_MULTIFD_COMPRESSION MULTIFD_COMPRESSION_NONE |
| 58 | /* 0: means nocompress, 1: best speed, ... 9: best compress ratio */ |
| 59 | #define DEFAULT_MIGRATE_MULTIFD_ZLIB_LEVEL 1 |
| 60 | /* |
| 61 | * 1: best speed, ... 9: best compress ratio |
| 62 | * There is some nuance here. Refer to QATzip documentation to understand |
| 63 | * the mapping of QATzip levels to standard deflate levels. |
| 64 | */ |
| 65 | #define DEFAULT_MIGRATE_MULTIFD_QATZIP_LEVEL 1 |
| 66 | |
| 67 | /* 0: means nocompress, 1: best speed, ... 20: best compress ratio */ |
| 68 | #define DEFAULT_MIGRATE_MULTIFD_ZSTD_LEVEL 1 |
| 69 | |
| 70 | /* Background transfer rate for postcopy, 0 means unlimited, note |
| 71 | * that page requests can still exceed this limit. |
| 72 | */ |
| 73 | #define DEFAULT_MIGRATE_MAX_POSTCOPY_BANDWIDTH 0 |
| 74 | |
| 75 | /* |
| 76 | * Parameters for self_announce_delay giving a stream of RARP/ARP |
| 77 | * packets after migration. |
| 78 | */ |
| 79 | #define DEFAULT_MIGRATE_ANNOUNCE_INITIAL 50 |
| 80 | #define DEFAULT_MIGRATE_ANNOUNCE_MAX 550 |
| 81 | #define DEFAULT_MIGRATE_ANNOUNCE_ROUNDS 5 |
| 82 | #define DEFAULT_MIGRATE_ANNOUNCE_STEP 100 |
| 83 | |
| 84 | #define DEFINE_PROP_MIG_CAP(name, x) \ |
| 85 | DEFINE_PROP_BOOL(name, MigrationState, capabilities[x], false) |
| 86 | |
| 87 | const PropertyInfo qdev_prop_StrOrNull; |
| 88 | #define DEFINE_PROP_STR_OR_NULL(_name, _state, _field) \ |
| 89 | DEFINE_PROP(_name, _state, _field, qdev_prop_StrOrNull, StrOrNull *, \ |
| 90 | .set_default = true) |
| 91 | |
| 92 | #define DEFAULT_MIGRATE_VCPU_DIRTY_LIMIT_PERIOD 1000 /* milliseconds */ |
| 93 | #define DEFAULT_MIGRATE_VCPU_DIRTY_LIMIT 1 /* MB/s */ |
| 94 | #define DEFAULT_MIGRATE_X_RDMA_CHUNK_SIZE MiB |
| 95 | |
| 96 | const Property migration_properties[] = { |
| 97 | DEFINE_PROP_BOOL("store-global-state", MigrationState, |
| 98 | store_global_state, true), |
| 99 | DEFINE_PROP_BOOL("send-configuration", MigrationState, |
| 100 | send_configuration, true), |
| 101 | DEFINE_PROP_BOOL("send-section-footer", MigrationState, |
| 102 | send_section_footer, true), |
| 103 | DEFINE_PROP_BOOL("send-switchover-start", MigrationState, |
| 104 | send_switchover_start, true), |
| 105 | DEFINE_PROP_BOOL("multifd-flush-after-each-section", MigrationState, |
| 106 | multifd_flush_after_each_section, false), |
| 107 | DEFINE_PROP_UINT8("x-clear-bitmap-shift", MigrationState, |
| 108 | clear_bitmap_shift, CLEAR_BITMAP_SHIFT_DEFAULT), |
| 109 | DEFINE_PROP_BOOL("x-preempt-pre-7-2", MigrationState, |
| 110 | preempt_pre_7_2, false), |
| 111 | DEFINE_PROP_BOOL("multifd-clean-tls-termination", MigrationState, |
| 112 | multifd_clean_tls_termination, true), |
| 113 | DEFINE_PROP_BOOL("switchover-ack-legacy", MigrationState, |
| 114 | switchover_ack_legacy, false), |
| 115 | |
| 116 | /* Migration parameters */ |
| 117 | DEFINE_PROP_UINT8("x-throttle-trigger-threshold", MigrationState, |
| 118 | parameters.throttle_trigger_threshold, |
| 119 | DEFAULT_MIGRATE_THROTTLE_TRIGGER_THRESHOLD), |
| 120 | DEFINE_PROP_UINT8("x-cpu-throttle-initial", MigrationState, |
| 121 | parameters.cpu_throttle_initial, |
| 122 | DEFAULT_MIGRATE_CPU_THROTTLE_INITIAL), |
| 123 | DEFINE_PROP_UINT8("x-cpu-throttle-increment", MigrationState, |
| 124 | parameters.cpu_throttle_increment, |
| 125 | DEFAULT_MIGRATE_CPU_THROTTLE_INCREMENT), |
| 126 | DEFINE_PROP_BOOL("x-cpu-throttle-tailslow", MigrationState, |
| 127 | parameters.cpu_throttle_tailslow, false), |
| 128 | DEFINE_PROP_SIZE("x-max-bandwidth", MigrationState, |
| 129 | parameters.max_bandwidth, MAX_THROTTLE), |
| 130 | DEFINE_PROP_SIZE("avail-switchover-bandwidth", MigrationState, |
| 131 | parameters.avail_switchover_bandwidth, 0), |
| 132 | DEFINE_PROP_UINT64("x-downtime-limit", MigrationState, |
| 133 | parameters.downtime_limit, |
| 134 | DEFAULT_MIGRATE_SET_DOWNTIME), |
| 135 | DEFINE_PROP_UINT32("x-checkpoint-delay", MigrationState, |
| 136 | parameters.x_checkpoint_delay, |
| 137 | DEFAULT_MIGRATE_X_CHECKPOINT_DELAY), |
| 138 | DEFINE_PROP_UINT8("multifd-channels", MigrationState, |
| 139 | parameters.multifd_channels, |
| 140 | DEFAULT_MIGRATE_MULTIFD_CHANNELS), |
| 141 | DEFINE_PROP_MULTIFD_COMPRESSION("multifd-compression", MigrationState, |
| 142 | parameters.multifd_compression, |
| 143 | DEFAULT_MIGRATE_MULTIFD_COMPRESSION), |
| 144 | DEFINE_PROP_UINT8("multifd-zlib-level", MigrationState, |
| 145 | parameters.multifd_zlib_level, |
| 146 | DEFAULT_MIGRATE_MULTIFD_ZLIB_LEVEL), |
| 147 | DEFINE_PROP_UINT8("multifd-qatzip-level", MigrationState, |
| 148 | parameters.multifd_qatzip_level, |
| 149 | DEFAULT_MIGRATE_MULTIFD_QATZIP_LEVEL), |
| 150 | DEFINE_PROP_UINT8("multifd-zstd-level", MigrationState, |
| 151 | parameters.multifd_zstd_level, |
| 152 | DEFAULT_MIGRATE_MULTIFD_ZSTD_LEVEL), |
| 153 | DEFINE_PROP_SIZE("xbzrle-cache-size", MigrationState, |
| 154 | parameters.xbzrle_cache_size, |
| 155 | DEFAULT_MIGRATE_XBZRLE_CACHE_SIZE), |
| 156 | DEFINE_PROP_SIZE("max-postcopy-bandwidth", MigrationState, |
| 157 | parameters.max_postcopy_bandwidth, |
| 158 | DEFAULT_MIGRATE_MAX_POSTCOPY_BANDWIDTH), |
| 159 | DEFINE_PROP_UINT8("max-cpu-throttle", MigrationState, |
| 160 | parameters.max_cpu_throttle, |
| 161 | DEFAULT_MIGRATE_MAX_CPU_THROTTLE), |
| 162 | DEFINE_PROP_SIZE("announce-initial", MigrationState, |
| 163 | parameters.announce_initial, |
| 164 | DEFAULT_MIGRATE_ANNOUNCE_INITIAL), |
| 165 | DEFINE_PROP_SIZE("announce-max", MigrationState, |
| 166 | parameters.announce_max, |
| 167 | DEFAULT_MIGRATE_ANNOUNCE_MAX), |
| 168 | DEFINE_PROP_SIZE("announce-rounds", MigrationState, |
| 169 | parameters.announce_rounds, |
| 170 | DEFAULT_MIGRATE_ANNOUNCE_ROUNDS), |
| 171 | DEFINE_PROP_SIZE("announce-step", MigrationState, |
| 172 | parameters.announce_step, |
| 173 | DEFAULT_MIGRATE_ANNOUNCE_STEP), |
| 174 | DEFINE_PROP_STR_OR_NULL("tls-creds", MigrationState, parameters.tls_creds), |
| 175 | DEFINE_PROP_STR_OR_NULL("tls-hostname", MigrationState, |
| 176 | parameters.tls_hostname), |
| 177 | DEFINE_PROP_STR_OR_NULL("tls-authz", MigrationState, parameters.tls_authz), |
| 178 | DEFINE_PROP_UINT64("x-vcpu-dirty-limit-period", MigrationState, |
| 179 | parameters.x_vcpu_dirty_limit_period, |
| 180 | DEFAULT_MIGRATE_VCPU_DIRTY_LIMIT_PERIOD), |
| 181 | DEFINE_PROP_UINT64("vcpu-dirty-limit", MigrationState, |
| 182 | parameters.vcpu_dirty_limit, |
| 183 | DEFAULT_MIGRATE_VCPU_DIRTY_LIMIT), |
| 184 | DEFINE_PROP_MIG_MODE("mode", MigrationState, |
| 185 | parameters.mode, |
| 186 | MIG_MODE_NORMAL), |
| 187 | DEFINE_PROP_ZERO_PAGE_DETECTION("zero-page-detection", MigrationState, |
| 188 | parameters.zero_page_detection, |
| 189 | ZERO_PAGE_DETECTION_MULTIFD), |
| 190 | DEFINE_PROP_UINT64("x-rdma-chunk-size", MigrationState, |
| 191 | parameters.x_rdma_chunk_size, |
| 192 | DEFAULT_MIGRATE_X_RDMA_CHUNK_SIZE), |
| 193 | |
| 194 | /* Migration capabilities */ |
| 195 | DEFINE_PROP_MIG_CAP("x-xbzrle", MIGRATION_CAPABILITY_XBZRLE), |
| 196 | DEFINE_PROP_MIG_CAP("x-rdma-pin-all", MIGRATION_CAPABILITY_RDMA_PIN_ALL), |
| 197 | DEFINE_PROP_MIG_CAP("x-auto-converge", MIGRATION_CAPABILITY_AUTO_CONVERGE), |
| 198 | DEFINE_PROP_MIG_CAP("x-events", MIGRATION_CAPABILITY_EVENTS), |
| 199 | DEFINE_PROP_MIG_CAP("x-postcopy-ram", MIGRATION_CAPABILITY_POSTCOPY_RAM), |
| 200 | DEFINE_PROP_MIG_CAP("x-postcopy-preempt", |
| 201 | MIGRATION_CAPABILITY_POSTCOPY_PREEMPT), |
| 202 | DEFINE_PROP_MIG_CAP("postcopy-blocktime", |
| 203 | MIGRATION_CAPABILITY_POSTCOPY_BLOCKTIME), |
| 204 | DEFINE_PROP_MIG_CAP("x-colo", MIGRATION_CAPABILITY_X_COLO), |
| 205 | DEFINE_PROP_MIG_CAP("x-release-ram", MIGRATION_CAPABILITY_RELEASE_RAM), |
| 206 | DEFINE_PROP_MIG_CAP("x-return-path", MIGRATION_CAPABILITY_RETURN_PATH), |
| 207 | DEFINE_PROP_MIG_CAP("x-multifd", MIGRATION_CAPABILITY_MULTIFD), |
| 208 | DEFINE_PROP_MIG_CAP("x-background-snapshot", |
| 209 | MIGRATION_CAPABILITY_BACKGROUND_SNAPSHOT), |
| 210 | #ifdef CONFIG_LINUX |
| 211 | DEFINE_PROP_MIG_CAP("x-zero-copy-send", |
| 212 | MIGRATION_CAPABILITY_ZERO_COPY_SEND), |
| 213 | #endif |
| 214 | DEFINE_PROP_MIG_CAP("x-switchover-ack", |
| 215 | MIGRATION_CAPABILITY_SWITCHOVER_ACK), |
| 216 | DEFINE_PROP_MIG_CAP("x-dirty-limit", MIGRATION_CAPABILITY_DIRTY_LIMIT), |
| 217 | DEFINE_PROP_MIG_CAP("mapped-ram", MIGRATION_CAPABILITY_MAPPED_RAM), |
| 218 | DEFINE_PROP_MIG_CAP("x-ignore-shared", |
| 219 | MIGRATION_CAPABILITY_X_IGNORE_SHARED), |
| 220 | }; |
| 221 | const size_t migration_properties_count = ARRAY_SIZE(migration_properties); |
| 222 | |
| 223 | static void get_StrOrNull(Object *obj, Visitor *v, const char *name, |
| 224 | void *opaque, Error **errp) |
| 225 | { |
| 226 | const Property *prop = opaque; |
| 227 | StrOrNull **ptr = object_field_prop_ptr(obj, prop); |
| 228 | StrOrNull *str_or_null = *ptr; |
| 229 | |
| 230 | /* |
| 231 | * The property should never be NULL because it's part of |
| 232 | * s->parameters and a default value is always set by qdev. It |
| 233 | * should also never be QNULL as the setter doesn't allow it. |
| 234 | */ |
| 235 | assert(str_or_null && str_or_null->type != QTYPE_QNULL); |
| 236 | visit_type_str(v, name, &str_or_null->u.s, errp); |
| 237 | } |
| 238 | |
| 239 | static void set_StrOrNull(Object *obj, Visitor *v, const char *name, |
| 240 | void *opaque, Error **errp) |
| 241 | { |
| 242 | const Property *prop = opaque; |
| 243 | StrOrNull **ptr = object_field_prop_ptr(obj, prop); |
| 244 | StrOrNull *str_or_null; |
| 245 | char *str; |
| 246 | |
| 247 | if (!visit_type_str(v, name, &str, errp)) { |
| 248 | return; |
| 249 | } |
| 250 | |
| 251 | /* |
| 252 | * This property only applies to the command line usage of |
| 253 | * migration's TLS options (-global migration.tls-*) where the |
| 254 | * NULL value cannot be provided as input (only strings are |
| 255 | * allowed). Therefore, this StrOrNull implementation never |
| 256 | * produces a QNULL value to avoid ever returning values outside |
| 257 | * the range of what was previously handled by consumers of the |
| 258 | * TLS options. |
| 259 | */ |
| 260 | str_or_null = g_new0(StrOrNull, 1); |
| 261 | str_or_null->type = QTYPE_QSTRING; |
| 262 | str_or_null->u.s = str; |
| 263 | |
| 264 | qapi_free_StrOrNull(*ptr); |
| 265 | *ptr = str_or_null; |
| 266 | } |
| 267 | |
| 268 | static void release_StrOrNull(Object *obj, const char *name, void *opaque) |
| 269 | { |
| 270 | const Property *prop = opaque; |
| 271 | qapi_free_StrOrNull(*(StrOrNull **)object_field_prop_ptr(obj, prop)); |
| 272 | } |
| 273 | |
| 274 | static void set_default_value_tls_opt(ObjectProperty *op, const Property *prop) |
| 275 | { |
| 276 | /* |
| 277 | * Initialization to the empty string here is important so |
| 278 | * query-migrate-parameters doesn't need to deal with a NULL value |
| 279 | * when it's called before any TLS option has been set. |
| 280 | */ |
| 281 | object_property_set_default_str(op, ""); |
| 282 | } |
| 283 | |
| 284 | /* |
| 285 | * String property like qdev_prop_string, except it's backed by a |
| 286 | * StrOrNull instead of a char *. This is intended for |
| 287 | * TYPE_MIGRATION's TLS options. |
| 288 | */ |
| 289 | const PropertyInfo qdev_prop_StrOrNull = { |
| 290 | .type = "StrOrNull", |
| 291 | .get = get_StrOrNull, |
| 292 | .set = set_StrOrNull, |
| 293 | .release = release_StrOrNull, |
| 294 | .set_default_value = set_default_value_tls_opt, |
| 295 | }; |
| 296 | |
| 297 | bool migrate_auto_converge(void) |
| 298 | { |
| 299 | MigrationState *s = migrate_get_current(); |
| 300 | |
| 301 | return s->capabilities[MIGRATION_CAPABILITY_AUTO_CONVERGE]; |
| 302 | } |
| 303 | |
| 304 | bool migrate_send_switchover_start(void) |
| 305 | { |
| 306 | MigrationState *s = migrate_get_current(); |
| 307 | |
| 308 | return s->send_switchover_start; |
| 309 | } |
| 310 | |
| 311 | bool migrate_background_snapshot(void) |
| 312 | { |
| 313 | MigrationState *s = migrate_get_current(); |
| 314 | |
| 315 | return s->capabilities[MIGRATION_CAPABILITY_BACKGROUND_SNAPSHOT]; |
| 316 | } |
| 317 | |
| 318 | bool migrate_colo(void) |
| 319 | { |
| 320 | MigrationState *s = migrate_get_current(); |
| 321 | |
| 322 | return s->capabilities[MIGRATION_CAPABILITY_X_COLO]; |
| 323 | } |
| 324 | |
| 325 | bool migrate_dirty_bitmaps(void) |
| 326 | { |
| 327 | MigrationState *s = migrate_get_current(); |
| 328 | |
| 329 | return s->capabilities[MIGRATION_CAPABILITY_DIRTY_BITMAPS]; |
| 330 | } |
| 331 | |
| 332 | bool migrate_dirty_limit(void) |
| 333 | { |
| 334 | MigrationState *s = migrate_get_current(); |
| 335 | |
| 336 | return s->capabilities[MIGRATION_CAPABILITY_DIRTY_LIMIT]; |
| 337 | } |
| 338 | |
| 339 | bool migrate_events(void) |
| 340 | { |
| 341 | MigrationState *s = migrate_get_current(); |
| 342 | |
| 343 | return s->capabilities[MIGRATION_CAPABILITY_EVENTS]; |
| 344 | } |
| 345 | |
| 346 | bool migrate_mapped_ram(void) |
| 347 | { |
| 348 | MigrationState *s = migrate_get_current(); |
| 349 | |
| 350 | return s->capabilities[MIGRATION_CAPABILITY_MAPPED_RAM]; |
| 351 | } |
| 352 | |
| 353 | bool migrate_ignore_shared(void) |
| 354 | { |
| 355 | MigrationState *s = migrate_get_current(); |
| 356 | |
| 357 | return s->capabilities[MIGRATION_CAPABILITY_X_IGNORE_SHARED]; |
| 358 | } |
| 359 | |
| 360 | bool migrate_late_block_activate(void) |
| 361 | { |
| 362 | MigrationState *s = migrate_get_current(); |
| 363 | |
| 364 | return s->capabilities[MIGRATION_CAPABILITY_LATE_BLOCK_ACTIVATE]; |
| 365 | } |
| 366 | |
| 367 | bool migrate_multifd(void) |
| 368 | { |
| 369 | MigrationState *s = migrate_get_current(); |
| 370 | |
| 371 | return s->capabilities[MIGRATION_CAPABILITY_MULTIFD]; |
| 372 | } |
| 373 | |
| 374 | bool migrate_pause_before_switchover(void) |
| 375 | { |
| 376 | MigrationState *s = migrate_get_current(); |
| 377 | |
| 378 | return s->capabilities[MIGRATION_CAPABILITY_PAUSE_BEFORE_SWITCHOVER]; |
| 379 | } |
| 380 | |
| 381 | bool migrate_postcopy_blocktime(void) |
| 382 | { |
| 383 | MigrationState *s = migrate_get_current(); |
| 384 | |
| 385 | return s->capabilities[MIGRATION_CAPABILITY_POSTCOPY_BLOCKTIME]; |
| 386 | } |
| 387 | |
| 388 | bool migrate_postcopy_preempt(void) |
| 389 | { |
| 390 | MigrationState *s = migrate_get_current(); |
| 391 | |
| 392 | return s->capabilities[MIGRATION_CAPABILITY_POSTCOPY_PREEMPT]; |
| 393 | } |
| 394 | |
| 395 | bool migrate_postcopy_ram(void) |
| 396 | { |
| 397 | MigrationState *s = migrate_get_current(); |
| 398 | |
| 399 | return s->capabilities[MIGRATION_CAPABILITY_POSTCOPY_RAM]; |
| 400 | } |
| 401 | |
| 402 | bool migrate_rdma_pin_all(void) |
| 403 | { |
| 404 | MigrationState *s = migrate_get_current(); |
| 405 | |
| 406 | return s->capabilities[MIGRATION_CAPABILITY_RDMA_PIN_ALL]; |
| 407 | } |
| 408 | |
| 409 | bool migrate_release_ram(void) |
| 410 | { |
| 411 | MigrationState *s = migrate_get_current(); |
| 412 | |
| 413 | return s->capabilities[MIGRATION_CAPABILITY_RELEASE_RAM]; |
| 414 | } |
| 415 | |
| 416 | bool migrate_return_path(void) |
| 417 | { |
| 418 | MigrationState *s = migrate_get_current(); |
| 419 | |
| 420 | return s->capabilities[MIGRATION_CAPABILITY_RETURN_PATH]; |
| 421 | } |
| 422 | |
| 423 | bool migrate_switchover_ack(void) |
| 424 | { |
| 425 | MigrationState *s = migrate_get_current(); |
| 426 | |
| 427 | return s->capabilities[MIGRATION_CAPABILITY_SWITCHOVER_ACK]; |
| 428 | } |
| 429 | |
| 430 | bool migrate_validate_uuid(void) |
| 431 | { |
| 432 | MigrationState *s = migrate_get_current(); |
| 433 | |
| 434 | return s->capabilities[MIGRATION_CAPABILITY_VALIDATE_UUID]; |
| 435 | } |
| 436 | |
| 437 | bool migrate_xbzrle(void) |
| 438 | { |
| 439 | MigrationState *s = migrate_get_current(); |
| 440 | |
| 441 | return s->capabilities[MIGRATION_CAPABILITY_XBZRLE]; |
| 442 | } |
| 443 | |
| 444 | bool migrate_zero_copy_send(void) |
| 445 | { |
| 446 | MigrationState *s = migrate_get_current(); |
| 447 | |
| 448 | return s->capabilities[MIGRATION_CAPABILITY_ZERO_COPY_SEND]; |
| 449 | } |
| 450 | |
| 451 | /* pseudo capabilities */ |
| 452 | |
| 453 | bool migrate_multifd_flush_after_each_section(void) |
| 454 | { |
| 455 | MigrationState *s = migrate_get_current(); |
| 456 | |
| 457 | return s->multifd_flush_after_each_section; |
| 458 | } |
| 459 | |
| 460 | bool migrate_postcopy(void) |
| 461 | { |
| 462 | return migrate_postcopy_ram() || migrate_dirty_bitmaps(); |
| 463 | } |
| 464 | |
| 465 | bool migrate_rdma(void) |
| 466 | { |
| 467 | MigrationState *s = migrate_get_current(); |
| 468 | |
| 469 | return s->rdma_migration; |
| 470 | } |
| 471 | |
| 472 | bool migrate_switchover_ack_legacy(void) |
| 473 | { |
| 474 | MigrationState *s = migrate_get_current(); |
| 475 | |
| 476 | return s->switchover_ack_legacy; |
| 477 | } |
| 478 | |
| 479 | typedef enum WriteTrackingSupport { |
| 480 | WT_SUPPORT_UNKNOWN = 0, |
| 481 | WT_SUPPORT_ABSENT, |
| 482 | WT_SUPPORT_AVAILABLE, |
| 483 | WT_SUPPORT_COMPATIBLE |
| 484 | } WriteTrackingSupport; |
| 485 | |
| 486 | static |
| 487 | WriteTrackingSupport migrate_query_write_tracking(void) |
| 488 | { |
| 489 | /* Check if kernel supports required UFFD features */ |
| 490 | if (!ram_write_tracking_available()) { |
| 491 | return WT_SUPPORT_ABSENT; |
| 492 | } |
| 493 | /* |
| 494 | * Check if current memory configuration is |
| 495 | * compatible with required UFFD features. |
| 496 | */ |
| 497 | if (!ram_write_tracking_compatible()) { |
| 498 | return WT_SUPPORT_AVAILABLE; |
| 499 | } |
| 500 | |
| 501 | return WT_SUPPORT_COMPATIBLE; |
| 502 | } |
| 503 | |
| 504 | /* Migration capabilities set */ |
| 505 | struct MigrateCapsSet { |
| 506 | int size; /* Capability set size */ |
| 507 | MigrationCapability caps[]; /* Variadic array of capabilities */ |
| 508 | }; |
| 509 | typedef struct MigrateCapsSet MigrateCapsSet; |
| 510 | |
| 511 | /* Define and initialize MigrateCapsSet */ |
| 512 | #define INITIALIZE_MIGRATE_CAPS_SET(_name, ...) \ |
| 513 | MigrateCapsSet _name = { \ |
| 514 | .size = sizeof((int []) { __VA_ARGS__ }) / sizeof(int), \ |
| 515 | .caps = { __VA_ARGS__ } \ |
| 516 | } |
| 517 | |
| 518 | /* Background-snapshot compatibility check list */ |
| 519 | static const |
| 520 | INITIALIZE_MIGRATE_CAPS_SET(check_caps_background_snapshot, |
| 521 | MIGRATION_CAPABILITY_POSTCOPY_RAM, |
| 522 | MIGRATION_CAPABILITY_DIRTY_BITMAPS, |
| 523 | MIGRATION_CAPABILITY_POSTCOPY_BLOCKTIME, |
| 524 | MIGRATION_CAPABILITY_LATE_BLOCK_ACTIVATE, |
| 525 | MIGRATION_CAPABILITY_RETURN_PATH, |
| 526 | MIGRATION_CAPABILITY_MULTIFD, |
| 527 | MIGRATION_CAPABILITY_PAUSE_BEFORE_SWITCHOVER, |
| 528 | MIGRATION_CAPABILITY_AUTO_CONVERGE, |
| 529 | MIGRATION_CAPABILITY_RELEASE_RAM, |
| 530 | MIGRATION_CAPABILITY_RDMA_PIN_ALL, |
| 531 | MIGRATION_CAPABILITY_XBZRLE, |
| 532 | MIGRATION_CAPABILITY_X_COLO, |
| 533 | MIGRATION_CAPABILITY_VALIDATE_UUID, |
| 534 | MIGRATION_CAPABILITY_ZERO_COPY_SEND); |
| 535 | |
| 536 | /* Snapshot compatibility check list */ |
| 537 | static const |
| 538 | INITIALIZE_MIGRATE_CAPS_SET(check_caps_savevm, |
| 539 | MIGRATION_CAPABILITY_MULTIFD, |
| 540 | ); |
| 541 | |
| 542 | static bool migrate_incoming_started(void) |
| 543 | { |
| 544 | return !!migration_incoming_get_current()->transport_data; |
| 545 | } |
| 546 | |
| 547 | bool migrate_can_snapshot(Error **errp) |
| 548 | { |
| 549 | MigrationState *s = migrate_get_current(); |
| 550 | int i; |
| 551 | |
| 552 | for (i = 0; i < check_caps_savevm.size; i++) { |
| 553 | int incomp_cap = check_caps_savevm.caps[i]; |
| 554 | |
| 555 | if (s->capabilities[incomp_cap]) { |
| 556 | error_setg(errp, |
| 557 | "Snapshots are not compatible with %s", |
| 558 | MigrationCapability_str(incomp_cap)); |
| 559 | return false; |
| 560 | } |
| 561 | } |
| 562 | |
| 563 | return true; |
| 564 | } |
| 565 | |
| 566 | |
| 567 | bool migrate_rdma_caps_check(bool *caps, Error **errp) |
| 568 | { |
| 569 | if (caps[MIGRATION_CAPABILITY_XBZRLE]) { |
| 570 | error_setg(errp, "RDMA and XBZRLE can't be used together"); |
| 571 | return false; |
| 572 | } |
| 573 | if (caps[MIGRATION_CAPABILITY_MULTIFD]) { |
| 574 | error_setg(errp, "RDMA and multifd can't be used together"); |
| 575 | return false; |
| 576 | } |
| 577 | if (caps[MIGRATION_CAPABILITY_POSTCOPY_RAM]) { |
| 578 | error_setg(errp, "RDMA and postcopy-ram can't be used together"); |
| 579 | return false; |
| 580 | } |
| 581 | |
| 582 | return true; |
| 583 | } |
| 584 | |
| 585 | /** |
| 586 | * @migration_caps_check - check capability compatibility |
| 587 | * |
| 588 | * @old_caps: old capability list |
| 589 | * @new_caps: new capability list |
| 590 | * @errp: set *errp if the check failed, with reason |
| 591 | * |
| 592 | * Returns true if check passed, otherwise false. |
| 593 | */ |
| 594 | bool migrate_caps_check(bool *old_caps, bool *new_caps, Error **errp) |
| 595 | { |
| 596 | ERRP_GUARD(); |
| 597 | MigrationIncomingState *mis = migration_incoming_get_current(); |
| 598 | |
| 599 | #ifdef CONFIG_REPLICATION |
| 600 | if (new_caps[MIGRATION_CAPABILITY_X_COLO]) { |
| 601 | if (!new_caps[MIGRATION_CAPABILITY_RETURN_PATH]) { |
| 602 | error_setg(errp, "Capability 'x-colo' requires capability " |
| 603 | "'return-path'"); |
| 604 | return false; |
| 605 | } |
| 606 | } |
| 607 | #else |
| 608 | if (new_caps[MIGRATION_CAPABILITY_X_COLO]) { |
| 609 | error_setg(errp, "QEMU compiled without replication module" |
| 610 | " can't enable COLO"); |
| 611 | error_append_hint(errp, "Please enable replication before COLO.\n"); |
| 612 | return false; |
| 613 | } |
| 614 | #endif |
| 615 | |
| 616 | if (new_caps[MIGRATION_CAPABILITY_POSTCOPY_RAM]) { |
| 617 | /* This check is reasonably expensive, so only when it's being |
| 618 | * set the first time, also it's only the destination that needs |
| 619 | * special support. |
| 620 | */ |
| 621 | if (!old_caps[MIGRATION_CAPABILITY_POSTCOPY_RAM] && |
| 622 | runstate_check(RUN_STATE_INMIGRATE) && |
| 623 | !postcopy_ram_supported_by_host(mis, errp)) { |
| 624 | error_prepend(errp, "Postcopy is not supported: "); |
| 625 | return false; |
| 626 | } |
| 627 | |
| 628 | if (new_caps[MIGRATION_CAPABILITY_X_IGNORE_SHARED]) { |
| 629 | error_setg(errp, "Postcopy is not compatible with ignore-shared"); |
| 630 | return false; |
| 631 | } |
| 632 | } |
| 633 | |
| 634 | if (new_caps[MIGRATION_CAPABILITY_BACKGROUND_SNAPSHOT]) { |
| 635 | WriteTrackingSupport wt_support; |
| 636 | int idx; |
| 637 | /* |
| 638 | * Check if 'background-snapshot' capability is supported by |
| 639 | * host kernel and compatible with guest memory configuration. |
| 640 | */ |
| 641 | wt_support = migrate_query_write_tracking(); |
| 642 | if (wt_support < WT_SUPPORT_AVAILABLE) { |
| 643 | error_setg(errp, "Background-snapshot is not supported by host kernel"); |
| 644 | return false; |
| 645 | } |
| 646 | if (wt_support < WT_SUPPORT_COMPATIBLE) { |
| 647 | error_setg(errp, "Background-snapshot is not compatible " |
| 648 | "with guest memory configuration"); |
| 649 | return false; |
| 650 | } |
| 651 | |
| 652 | /* |
| 653 | * Check if there are any migration capabilities |
| 654 | * incompatible with 'background-snapshot'. |
| 655 | */ |
| 656 | for (idx = 0; idx < check_caps_background_snapshot.size; idx++) { |
| 657 | int incomp_cap = check_caps_background_snapshot.caps[idx]; |
| 658 | if (new_caps[incomp_cap]) { |
| 659 | error_setg(errp, |
| 660 | "Background-snapshot is not compatible with %s", |
| 661 | MigrationCapability_str(incomp_cap)); |
| 662 | return false; |
| 663 | } |
| 664 | } |
| 665 | } |
| 666 | |
| 667 | #ifdef CONFIG_LINUX |
| 668 | if (new_caps[MIGRATION_CAPABILITY_ZERO_COPY_SEND] && |
| 669 | (!new_caps[MIGRATION_CAPABILITY_MULTIFD] || |
| 670 | new_caps[MIGRATION_CAPABILITY_XBZRLE] || |
| 671 | migrate_multifd_compression() || |
| 672 | migrate_tls())) { |
| 673 | error_setg(errp, |
| 674 | "Zero copy only available for non-compressed non-TLS multifd migration"); |
| 675 | return false; |
| 676 | } |
| 677 | #else |
| 678 | if (new_caps[MIGRATION_CAPABILITY_ZERO_COPY_SEND]) { |
| 679 | error_setg(errp, |
| 680 | "Zero copy currently only available on Linux"); |
| 681 | return false; |
| 682 | } |
| 683 | #endif |
| 684 | |
| 685 | if (new_caps[MIGRATION_CAPABILITY_POSTCOPY_PREEMPT]) { |
| 686 | if (!new_caps[MIGRATION_CAPABILITY_POSTCOPY_RAM]) { |
| 687 | error_setg(errp, "Postcopy preempt requires postcopy-ram"); |
| 688 | return false; |
| 689 | } |
| 690 | |
| 691 | if (!migrate_postcopy_preempt() && migrate_incoming_started()) { |
| 692 | error_setg(errp, |
| 693 | "Postcopy preempt must be set before incoming starts"); |
| 694 | return false; |
| 695 | } |
| 696 | } |
| 697 | |
| 698 | if (new_caps[MIGRATION_CAPABILITY_MULTIFD]) { |
| 699 | if (!migrate_multifd() && migrate_incoming_started()) { |
| 700 | error_setg(errp, "Multifd must be set before incoming starts"); |
| 701 | return false; |
| 702 | } |
| 703 | } |
| 704 | |
| 705 | if (new_caps[MIGRATION_CAPABILITY_SWITCHOVER_ACK]) { |
| 706 | if (!new_caps[MIGRATION_CAPABILITY_RETURN_PATH]) { |
| 707 | error_setg(errp, "Capability 'switchover-ack' requires capability " |
| 708 | "'return-path'"); |
| 709 | return false; |
| 710 | } |
| 711 | } |
| 712 | if (new_caps[MIGRATION_CAPABILITY_DIRTY_LIMIT]) { |
| 713 | if (new_caps[MIGRATION_CAPABILITY_AUTO_CONVERGE]) { |
| 714 | error_setg(errp, "dirty-limit conflicts with auto-converge" |
| 715 | " either of then available currently"); |
| 716 | return false; |
| 717 | } |
| 718 | |
| 719 | if (!kvm_enabled() || !kvm_dirty_ring_enabled()) { |
| 720 | error_setg(errp, "dirty-limit requires KVM with accelerator" |
| 721 | " property 'dirty-ring-size' set"); |
| 722 | return false; |
| 723 | } |
| 724 | } |
| 725 | |
| 726 | if (new_caps[MIGRATION_CAPABILITY_MULTIFD]) { |
| 727 | if (new_caps[MIGRATION_CAPABILITY_XBZRLE]) { |
| 728 | error_setg(errp, "Multifd is not compatible with xbzrle"); |
| 729 | return false; |
| 730 | } |
| 731 | } |
| 732 | |
| 733 | if (new_caps[MIGRATION_CAPABILITY_MAPPED_RAM]) { |
| 734 | if (new_caps[MIGRATION_CAPABILITY_XBZRLE]) { |
| 735 | error_setg(errp, |
| 736 | "Mapped-ram migration is incompatible with xbzrle"); |
| 737 | return false; |
| 738 | } |
| 739 | } |
| 740 | |
| 741 | if (new_caps[MIGRATION_CAPABILITY_MAPPED_RAM] && |
| 742 | new_caps[MIGRATION_CAPABILITY_POSTCOPY_RAM]) { |
| 743 | if (new_caps[MIGRATION_CAPABILITY_MULTIFD]) { |
| 744 | error_setg(errp, |
| 745 | "Multifd is not supported with fast snapshot load"); |
| 746 | return false; |
| 747 | } |
| 748 | |
| 749 | if (new_caps[MIGRATION_CAPABILITY_POSTCOPY_PREEMPT]) { |
| 750 | error_setg( |
| 751 | errp, |
| 752 | "Postcopy Preempt is incompatible with fast snapshot load"); |
| 753 | return false; |
| 754 | } |
| 755 | |
| 756 | if (!postcopy_notifier_list_empty()) { |
| 757 | error_setg(errp, |
| 758 | "vhost-user is not supported with fast snapshot load"); |
| 759 | return false; |
| 760 | } |
| 761 | } |
| 762 | |
| 763 | /* |
| 764 | * On destination side, check the cases that capability is being set |
| 765 | * after incoming thread has started. |
| 766 | */ |
| 767 | if (migrate_rdma() && !migrate_rdma_caps_check(new_caps, errp)) { |
| 768 | return false; |
| 769 | } |
| 770 | return true; |
| 771 | } |
| 772 | |
| 773 | MigrationCapabilityStatusList *qmp_query_migrate_capabilities(Error **errp) |
| 774 | { |
| 775 | MigrationCapabilityStatusList *head = NULL, **tail = &head; |
| 776 | MigrationCapabilityStatus *caps; |
| 777 | MigrationState *s = migrate_get_current(); |
| 778 | int i; |
| 779 | |
| 780 | for (i = 0; i < MIGRATION_CAPABILITY__MAX; i++) { |
| 781 | caps = g_malloc0(sizeof(*caps)); |
| 782 | caps->capability = i; |
| 783 | caps->state = s->capabilities[i]; |
| 784 | QAPI_LIST_APPEND(tail, caps); |
| 785 | } |
| 786 | |
| 787 | return head; |
| 788 | } |
| 789 | |
| 790 | void qmp_migrate_set_capabilities(MigrationCapabilityStatusList *params, |
| 791 | Error **errp) |
| 792 | { |
| 793 | MigrationState *s = migrate_get_current(); |
| 794 | MigrationCapabilityStatusList *cap; |
| 795 | bool new_caps[MIGRATION_CAPABILITY__MAX]; |
| 796 | |
| 797 | if (migration_is_running() || migration_in_colo_state()) { |
| 798 | error_setg(errp, "There's a migration process in progress"); |
| 799 | return; |
| 800 | } |
| 801 | |
| 802 | memcpy(new_caps, s->capabilities, sizeof(new_caps)); |
| 803 | for (cap = params; cap; cap = cap->next) { |
| 804 | new_caps[cap->value->capability] = cap->value->state; |
| 805 | } |
| 806 | |
| 807 | if (!migrate_caps_check(s->capabilities, new_caps, errp)) { |
| 808 | return; |
| 809 | } |
| 810 | |
| 811 | for (cap = params; cap; cap = cap->next) { |
| 812 | s->capabilities[cap->value->capability] = cap->value->state; |
| 813 | } |
| 814 | } |
| 815 | |
| 816 | /* parameters */ |
| 817 | |
| 818 | const BitmapMigrationNodeAliasList *migrate_block_bitmap_mapping(void) |
| 819 | { |
| 820 | MigrationState *s = migrate_get_current(); |
| 821 | |
| 822 | return s->parameters.block_bitmap_mapping; |
| 823 | } |
| 824 | |
| 825 | bool migrate_has_block_bitmap_mapping(void) |
| 826 | { |
| 827 | MigrationState *s = migrate_get_current(); |
| 828 | |
| 829 | return s->has_block_bitmap_mapping; |
| 830 | } |
| 831 | |
| 832 | uint32_t migrate_checkpoint_delay(void) |
| 833 | { |
| 834 | MigrationState *s = migrate_get_current(); |
| 835 | |
| 836 | return s->parameters.x_checkpoint_delay; |
| 837 | } |
| 838 | |
| 839 | uint8_t migrate_cpu_throttle_increment(void) |
| 840 | { |
| 841 | MigrationState *s = migrate_get_current(); |
| 842 | |
| 843 | return s->parameters.cpu_throttle_increment; |
| 844 | } |
| 845 | |
| 846 | uint8_t migrate_cpu_throttle_initial(void) |
| 847 | { |
| 848 | MigrationState *s = migrate_get_current(); |
| 849 | |
| 850 | return s->parameters.cpu_throttle_initial; |
| 851 | } |
| 852 | |
| 853 | bool migrate_cpu_throttle_tailslow(void) |
| 854 | { |
| 855 | MigrationState *s = migrate_get_current(); |
| 856 | |
| 857 | return s->parameters.cpu_throttle_tailslow; |
| 858 | } |
| 859 | |
| 860 | bool migrate_direct_io(void) |
| 861 | { |
| 862 | MigrationState *s = migrate_get_current(); |
| 863 | |
| 864 | /* |
| 865 | * O_DIRECT is only supported with mapped-ram and multifd. |
| 866 | * |
| 867 | * mapped-ram is needed because filesystems impose restrictions on |
| 868 | * O_DIRECT IO alignment (see MAPPED_RAM_FILE_OFFSET_ALIGNMENT). |
| 869 | * |
| 870 | * multifd is needed to keep the unaligned portion of the stream |
| 871 | * isolated to the main migration thread while multifd channels |
| 872 | * process the aligned data with O_DIRECT enabled. |
| 873 | */ |
| 874 | return s->parameters.direct_io && |
| 875 | s->capabilities[MIGRATION_CAPABILITY_MAPPED_RAM] && |
| 876 | s->capabilities[MIGRATION_CAPABILITY_MULTIFD]; |
| 877 | } |
| 878 | |
| 879 | uint64_t migrate_downtime_limit(void) |
| 880 | { |
| 881 | MigrationState *s = migrate_get_current(); |
| 882 | |
| 883 | return s->parameters.downtime_limit; |
| 884 | } |
| 885 | |
| 886 | uint8_t migrate_max_cpu_throttle(void) |
| 887 | { |
| 888 | MigrationState *s = migrate_get_current(); |
| 889 | |
| 890 | return s->parameters.max_cpu_throttle; |
| 891 | } |
| 892 | |
| 893 | uint64_t migrate_max_bandwidth(void) |
| 894 | { |
| 895 | MigrationState *s = migrate_get_current(); |
| 896 | |
| 897 | return s->parameters.max_bandwidth; |
| 898 | } |
| 899 | |
| 900 | uint64_t migrate_avail_switchover_bandwidth(void) |
| 901 | { |
| 902 | MigrationState *s = migrate_get_current(); |
| 903 | |
| 904 | return s->parameters.avail_switchover_bandwidth; |
| 905 | } |
| 906 | |
| 907 | uint64_t migrate_max_postcopy_bandwidth(void) |
| 908 | { |
| 909 | MigrationState *s = migrate_get_current(); |
| 910 | |
| 911 | return s->parameters.max_postcopy_bandwidth; |
| 912 | } |
| 913 | |
| 914 | MigMode migrate_mode(void) |
| 915 | { |
| 916 | MigMode mode = cpr_get_incoming_mode(); |
| 917 | |
| 918 | if (mode == MIG_MODE_NONE) { |
| 919 | mode = migrate_get_current()->parameters.mode; |
| 920 | } |
| 921 | |
| 922 | assert(mode >= 0 && mode < MIG_MODE__MAX); |
| 923 | return mode; |
| 924 | } |
| 925 | |
| 926 | int migrate_multifd_channels(void) |
| 927 | { |
| 928 | MigrationState *s = migrate_get_current(); |
| 929 | |
| 930 | return s->parameters.multifd_channels; |
| 931 | } |
| 932 | |
| 933 | MultiFDCompression migrate_multifd_compression(void) |
| 934 | { |
| 935 | MigrationState *s = migrate_get_current(); |
| 936 | |
| 937 | assert(s->parameters.multifd_compression < MULTIFD_COMPRESSION__MAX); |
| 938 | return s->parameters.multifd_compression; |
| 939 | } |
| 940 | |
| 941 | int migrate_multifd_zlib_level(void) |
| 942 | { |
| 943 | MigrationState *s = migrate_get_current(); |
| 944 | |
| 945 | return s->parameters.multifd_zlib_level; |
| 946 | } |
| 947 | |
| 948 | int migrate_multifd_qatzip_level(void) |
| 949 | { |
| 950 | MigrationState *s = migrate_get_current(); |
| 951 | |
| 952 | return s->parameters.multifd_qatzip_level; |
| 953 | } |
| 954 | |
| 955 | int migrate_multifd_zstd_level(void) |
| 956 | { |
| 957 | MigrationState *s = migrate_get_current(); |
| 958 | |
| 959 | return s->parameters.multifd_zstd_level; |
| 960 | } |
| 961 | |
| 962 | uint8_t migrate_throttle_trigger_threshold(void) |
| 963 | { |
| 964 | MigrationState *s = migrate_get_current(); |
| 965 | |
| 966 | return s->parameters.throttle_trigger_threshold; |
| 967 | } |
| 968 | |
| 969 | const char *migrate_tls_authz(void) |
| 970 | { |
| 971 | MigrationState *s = migrate_get_current(); |
| 972 | |
| 973 | if (*s->parameters.tls_authz->u.s) { |
| 974 | return s->parameters.tls_authz->u.s; |
| 975 | } |
| 976 | |
| 977 | return NULL; |
| 978 | } |
| 979 | |
| 980 | const char *migrate_tls_creds(void) |
| 981 | { |
| 982 | MigrationState *s = migrate_get_current(); |
| 983 | |
| 984 | if (*s->parameters.tls_creds->u.s) { |
| 985 | return s->parameters.tls_creds->u.s; |
| 986 | } |
| 987 | |
| 988 | return NULL; |
| 989 | } |
| 990 | |
| 991 | const char *migrate_tls_hostname(void) |
| 992 | { |
| 993 | MigrationState *s = migrate_get_current(); |
| 994 | |
| 995 | if (*s->parameters.tls_hostname->u.s) { |
| 996 | return s->parameters.tls_hostname->u.s; |
| 997 | } |
| 998 | |
| 999 | /* hostname saved from a previously connected channel */ |
| 1000 | if (s->hostname) { |
| 1001 | return s->hostname; |
| 1002 | } |
| 1003 | |
| 1004 | return NULL; |
| 1005 | } |
| 1006 | |
| 1007 | bool migrate_tls(void) |
| 1008 | { |
| 1009 | return !!migrate_tls_creds(); |
| 1010 | } |
| 1011 | |
| 1012 | uint64_t migrate_vcpu_dirty_limit_period(void) |
| 1013 | { |
| 1014 | MigrationState *s = migrate_get_current(); |
| 1015 | |
| 1016 | return s->parameters.x_vcpu_dirty_limit_period; |
| 1017 | } |
| 1018 | |
| 1019 | uint64_t migrate_xbzrle_cache_size(void) |
| 1020 | { |
| 1021 | MigrationState *s = migrate_get_current(); |
| 1022 | |
| 1023 | return s->parameters.xbzrle_cache_size; |
| 1024 | } |
| 1025 | |
| 1026 | ZeroPageDetection migrate_zero_page_detection(void) |
| 1027 | { |
| 1028 | MigrationState *s = migrate_get_current(); |
| 1029 | |
| 1030 | return s->parameters.zero_page_detection; |
| 1031 | } |
| 1032 | |
| 1033 | uint64_t migrate_rdma_chunk_size(void) |
| 1034 | { |
| 1035 | MigrationState *s = migrate_get_current(); |
| 1036 | uint64_t size = s->parameters.x_rdma_chunk_size; |
| 1037 | |
| 1038 | assert(MiB <= size && size <= GiB && is_power_of_2(size)); |
| 1039 | return size; |
| 1040 | } |
| 1041 | |
| 1042 | /* parameters helpers */ |
| 1043 | |
| 1044 | AnnounceParameters *migrate_announce_params(void) |
| 1045 | { |
| 1046 | static AnnounceParameters ap; |
| 1047 | |
| 1048 | MigrationState *s = migrate_get_current(); |
| 1049 | |
| 1050 | ap.initial = s->parameters.announce_initial; |
| 1051 | ap.max = s->parameters.announce_max; |
| 1052 | ap.rounds = s->parameters.announce_rounds; |
| 1053 | ap.step = s->parameters.announce_step; |
| 1054 | |
| 1055 | return ≈ |
| 1056 | } |
| 1057 | |
| 1058 | void migrate_tls_opts_free(MigrationParameters *params) |
| 1059 | { |
| 1060 | qapi_free_StrOrNull(params->tls_creds); |
| 1061 | qapi_free_StrOrNull(params->tls_hostname); |
| 1062 | qapi_free_StrOrNull(params->tls_authz); |
| 1063 | } |
| 1064 | |
| 1065 | /* normalize QTYPE_QNULL to QTYPE_QSTRING "" */ |
| 1066 | static void tls_opt_to_str(StrOrNull *opt) |
| 1067 | { |
| 1068 | if (!opt || opt->type == QTYPE_QSTRING) { |
| 1069 | return; |
| 1070 | } |
| 1071 | |
| 1072 | qobject_unref(opt->u.n); |
| 1073 | opt->type = QTYPE_QSTRING; |
| 1074 | opt->u.s = g_strdup(""); |
| 1075 | } |
| 1076 | |
| 1077 | /* |
| 1078 | * query-migrate-parameters expects all members of MigrationParameters |
| 1079 | * to be present, but we cannot mark them non-optional in QAPI because |
| 1080 | * the structure is also used for migrate-set-parameters, which needs |
| 1081 | * the optionality. Force all parameters to be seen as present |
| 1082 | * now. Note that this depends on some form of default being set for |
| 1083 | * every member of MigrationParameters, currently done during qdev |
| 1084 | * init using migration_properties defined in this file. The TLS |
| 1085 | * options are a special case because they don't have a default and |
| 1086 | * need to be normalized before use. |
| 1087 | */ |
| 1088 | static void migrate_mark_all_params_present(MigrationParameters *p) |
| 1089 | { |
| 1090 | int len, n_str_args = 3; /* tls-creds, tls-hostname, tls-authz */ |
| 1091 | bool *has_fields[] = { |
| 1092 | &p->has_throttle_trigger_threshold, &p->has_cpu_throttle_initial, |
| 1093 | &p->has_cpu_throttle_increment, &p->has_cpu_throttle_tailslow, |
| 1094 | &p->has_max_bandwidth, &p->has_avail_switchover_bandwidth, |
| 1095 | &p->has_downtime_limit, &p->has_x_checkpoint_delay, |
| 1096 | &p->has_multifd_channels, &p->has_multifd_compression, |
| 1097 | &p->has_multifd_zlib_level, &p->has_multifd_qatzip_level, |
| 1098 | &p->has_multifd_zstd_level, &p->has_xbzrle_cache_size, |
| 1099 | &p->has_max_postcopy_bandwidth, &p->has_max_cpu_throttle, |
| 1100 | &p->has_announce_initial, &p->has_announce_max, &p->has_announce_rounds, |
| 1101 | &p->has_announce_step, &p->has_block_bitmap_mapping, |
| 1102 | &p->has_x_vcpu_dirty_limit_period, &p->has_vcpu_dirty_limit, |
| 1103 | &p->has_mode, &p->has_zero_page_detection, &p->has_direct_io, |
| 1104 | &p->has_x_rdma_chunk_size, &p->has_cpr_exec_command, |
| 1105 | }; |
| 1106 | |
| 1107 | len = ARRAY_SIZE(has_fields); |
| 1108 | assert(len + n_str_args == MIGRATION_PARAMETER__MAX); |
| 1109 | |
| 1110 | for (int i = 0; i < len; i++) { |
| 1111 | *has_fields[i] = true; |
| 1112 | } |
| 1113 | } |
| 1114 | |
| 1115 | MigrationParameters *qmp_query_migrate_parameters(Error **errp) |
| 1116 | { |
| 1117 | MigrationState *s = migrate_get_current(); |
| 1118 | MigrationParameters *params = QAPI_CLONE(MigrationParameters, |
| 1119 | &s->parameters); |
| 1120 | |
| 1121 | /* |
| 1122 | * The block-bitmap-mapping breaks the expected API of |
| 1123 | * query-migrate-parameters of having all members present. To keep |
| 1124 | * compatibility, only emit this field if it's actually been |
| 1125 | * set. The empty list is a valid value. |
| 1126 | */ |
| 1127 | if (!s->has_block_bitmap_mapping) { |
| 1128 | params->has_block_bitmap_mapping = false; |
| 1129 | qapi_free_BitmapMigrationNodeAliasList(params->block_bitmap_mapping); |
| 1130 | } |
| 1131 | |
| 1132 | return params; |
| 1133 | } |
| 1134 | |
| 1135 | void migrate_params_init(MigrationParameters *params) |
| 1136 | { |
| 1137 | migrate_mark_all_params_present(params); |
| 1138 | } |
| 1139 | |
| 1140 | static void migrate_post_update_params(MigrationParameters *new, Error **errp) |
| 1141 | { |
| 1142 | MigrationState *s = migrate_get_current(); |
| 1143 | |
| 1144 | if (new->has_max_bandwidth) { |
| 1145 | if (s->to_dst_file && !migration_in_postcopy()) { |
| 1146 | migration_rate_set(new->max_bandwidth); |
| 1147 | } |
| 1148 | } |
| 1149 | |
| 1150 | if (new->has_x_checkpoint_delay) { |
| 1151 | colo_checkpoint_delay_set(); |
| 1152 | } |
| 1153 | |
| 1154 | if (new->has_xbzrle_cache_size) { |
| 1155 | xbzrle_cache_resize(new->xbzrle_cache_size, errp); |
| 1156 | } |
| 1157 | |
| 1158 | if (new->has_max_postcopy_bandwidth) { |
| 1159 | if (s->to_dst_file && migration_in_postcopy()) { |
| 1160 | migration_rate_set(new->max_postcopy_bandwidth); |
| 1161 | } |
| 1162 | } |
| 1163 | } |
| 1164 | |
| 1165 | /* |
| 1166 | * Check whether the parameters are valid. Error will be put into errp |
| 1167 | * (if provided). Return true if valid, otherwise false. |
| 1168 | */ |
| 1169 | bool migrate_params_check(MigrationParameters *params, Error **errp) |
| 1170 | { |
| 1171 | ERRP_GUARD(); |
| 1172 | |
| 1173 | if (params->throttle_trigger_threshold < 1 || |
| 1174 | params->throttle_trigger_threshold > 100) { |
| 1175 | error_setg(errp, "Option throttle-trigger-threshold expects " |
| 1176 | "an integer in the range of 1 to 100"); |
| 1177 | return false; |
| 1178 | } |
| 1179 | |
| 1180 | if (params->cpu_throttle_initial < 1 || |
| 1181 | params->cpu_throttle_initial > 99) { |
| 1182 | error_setg(errp, "Option cpu-throttle-initial expects " |
| 1183 | "an integer in the range of 1 to 99"); |
| 1184 | return false; |
| 1185 | } |
| 1186 | |
| 1187 | if (params->cpu_throttle_increment < 1 || |
| 1188 | params->cpu_throttle_increment > 99) { |
| 1189 | error_setg(errp, "Option cpu-throttle-increment expects " |
| 1190 | "an integer in the range of 1 to 99"); |
| 1191 | return false; |
| 1192 | } |
| 1193 | |
| 1194 | if (params->max_bandwidth > SIZE_MAX) { |
| 1195 | error_setg(errp, "Option max-bandwidth expects " |
| 1196 | "an integer in the range of 0 to "stringify(SIZE_MAX) |
| 1197 | " bytes/second"); |
| 1198 | return false; |
| 1199 | } |
| 1200 | |
| 1201 | if (params->avail_switchover_bandwidth > SIZE_MAX) { |
| 1202 | error_setg(errp, "Option avail-switchover-bandwidth expects " |
| 1203 | "an integer in the range of 0 to "stringify(SIZE_MAX) |
| 1204 | " bytes/second"); |
| 1205 | return false; |
| 1206 | } |
| 1207 | |
| 1208 | if (params->downtime_limit > MAX_MIGRATE_DOWNTIME) { |
| 1209 | error_setg(errp, "Option downtime-limit expects " |
| 1210 | "an integer in the range of 0 to " |
| 1211 | stringify(MAX_MIGRATE_DOWNTIME)" ms"); |
| 1212 | return false; |
| 1213 | } |
| 1214 | |
| 1215 | if (params->multifd_channels < 1) { |
| 1216 | error_setg(errp, "Option multifd-channels expects " |
| 1217 | "a value between 1 and 255"); |
| 1218 | return false; |
| 1219 | } |
| 1220 | |
| 1221 | if (params->multifd_zlib_level > 9) { |
| 1222 | error_setg(errp, "Option multifd-zlib-level expects " |
| 1223 | "a value between 0 and 9"); |
| 1224 | return false; |
| 1225 | } |
| 1226 | |
| 1227 | if (params->multifd_qatzip_level > 9 || |
| 1228 | params->multifd_qatzip_level < 1) { |
| 1229 | error_setg(errp, "Option multifd-qatzip-level expects " |
| 1230 | "a value between 1 and 9"); |
| 1231 | return false; |
| 1232 | } |
| 1233 | |
| 1234 | if (params->multifd_zstd_level > 20) { |
| 1235 | error_setg(errp, "Option multifd-zstd-level expects " |
| 1236 | "a value between 0 and 20"); |
| 1237 | return false; |
| 1238 | } |
| 1239 | |
| 1240 | if (params->xbzrle_cache_size < qemu_target_page_size() || |
| 1241 | !is_power_of_2(params->xbzrle_cache_size)) { |
| 1242 | error_setg(errp, "Option xbzrle-cache-size expects " |
| 1243 | "a power of two no less than the target page size"); |
| 1244 | return false; |
| 1245 | } |
| 1246 | |
| 1247 | if (params->max_cpu_throttle < params->cpu_throttle_initial || |
| 1248 | params->max_cpu_throttle > 99) { |
| 1249 | error_setg(errp, "Option max-cpu-throttle expects " |
| 1250 | "an integer in the range of cpu-throttle-initial to 99"); |
| 1251 | return false; |
| 1252 | } |
| 1253 | |
| 1254 | if (params->announce_initial > 100000) { |
| 1255 | error_setg(errp, "Option announce-initial expects " |
| 1256 | "a value between 0 and 100000"); |
| 1257 | return false; |
| 1258 | } |
| 1259 | if (params->announce_max > 100000) { |
| 1260 | error_setg(errp, "Option announce-max expects " |
| 1261 | "a value between 0 and 100000"); |
| 1262 | return false; |
| 1263 | } |
| 1264 | if (params->announce_rounds > 1000) { |
| 1265 | error_setg(errp, "Option announce-rounds expects " |
| 1266 | "a value between 0 and 1000"); |
| 1267 | return false; |
| 1268 | } |
| 1269 | if (params->announce_step < 1 || |
| 1270 | params->announce_step > 10000) { |
| 1271 | error_setg(errp, "Option announce-step expects " |
| 1272 | "a value between 0 and 10000"); |
| 1273 | return false; |
| 1274 | } |
| 1275 | |
| 1276 | if (!check_dirty_bitmap_mig_alias_map(params->block_bitmap_mapping, errp)) { |
| 1277 | error_prepend(errp, "Invalid mapping given for block-bitmap-mapping: "); |
| 1278 | return false; |
| 1279 | } |
| 1280 | |
| 1281 | #ifdef CONFIG_LINUX |
| 1282 | if (migrate_zero_copy_send() && |
| 1283 | (params->multifd_compression || *params->tls_creds->u.s)) { |
| 1284 | error_setg(errp, |
| 1285 | "Zero copy only available for non-compressed non-TLS multifd migration"); |
| 1286 | return false; |
| 1287 | } |
| 1288 | #endif |
| 1289 | |
| 1290 | if (migrate_mapped_ram() && |
| 1291 | (migrate_multifd_compression() || migrate_tls())) { |
| 1292 | error_setg(errp, |
| 1293 | "Mapped-ram only available for non-compressed non-TLS multifd migration"); |
| 1294 | return false; |
| 1295 | } |
| 1296 | |
| 1297 | if (params->x_vcpu_dirty_limit_period < 1 || |
| 1298 | params->x_vcpu_dirty_limit_period > 1000) { |
| 1299 | error_setg(errp, "Option x-vcpu-dirty-limit-period expects " |
| 1300 | "a value between 1 and 1000"); |
| 1301 | return false; |
| 1302 | } |
| 1303 | |
| 1304 | if (params->vcpu_dirty_limit < 1) { |
| 1305 | error_setg(errp, |
| 1306 | "Parameter 'vcpu-dirty-limit' must be greater than 1 MB/s"); |
| 1307 | return false; |
| 1308 | } |
| 1309 | |
| 1310 | if (params->direct_io && !qemu_has_direct_io()) { |
| 1311 | error_setg(errp, "No build-time support for direct-io"); |
| 1312 | return false; |
| 1313 | } |
| 1314 | |
| 1315 | if (params->has_x_rdma_chunk_size && |
| 1316 | (params->x_rdma_chunk_size < MiB || |
| 1317 | params->x_rdma_chunk_size > GiB || |
| 1318 | !is_power_of_2(params->x_rdma_chunk_size))) { |
| 1319 | error_setg(errp, "Option x_rdma_chunk_size expects " |
| 1320 | "a power of 2 in the range 1MiB to 1024MiB"); |
| 1321 | return false; |
| 1322 | } |
| 1323 | |
| 1324 | return true; |
| 1325 | } |
| 1326 | |
| 1327 | static void migrate_params_test_apply(MigrationParameters *params, |
| 1328 | MigrationParameters *dest) |
| 1329 | { |
| 1330 | MigrationState *s = migrate_get_current(); |
| 1331 | |
| 1332 | QAPI_CLONE_MEMBERS(MigrationParameters, dest, &s->parameters); |
| 1333 | |
| 1334 | if (params->has_throttle_trigger_threshold) { |
| 1335 | dest->throttle_trigger_threshold = params->throttle_trigger_threshold; |
| 1336 | } |
| 1337 | |
| 1338 | if (params->has_cpu_throttle_initial) { |
| 1339 | dest->cpu_throttle_initial = params->cpu_throttle_initial; |
| 1340 | } |
| 1341 | |
| 1342 | if (params->has_cpu_throttle_increment) { |
| 1343 | dest->cpu_throttle_increment = params->cpu_throttle_increment; |
| 1344 | } |
| 1345 | |
| 1346 | if (params->has_cpu_throttle_tailslow) { |
| 1347 | dest->cpu_throttle_tailslow = params->cpu_throttle_tailslow; |
| 1348 | } |
| 1349 | |
| 1350 | if (params->tls_creds) { |
| 1351 | qapi_free_StrOrNull(dest->tls_creds); |
| 1352 | dest->tls_creds = QAPI_CLONE(StrOrNull, params->tls_creds); |
| 1353 | } |
| 1354 | |
| 1355 | if (params->tls_hostname) { |
| 1356 | qapi_free_StrOrNull(dest->tls_hostname); |
| 1357 | dest->tls_hostname = QAPI_CLONE(StrOrNull, params->tls_hostname); |
| 1358 | } |
| 1359 | |
| 1360 | if (params->tls_authz) { |
| 1361 | qapi_free_StrOrNull(dest->tls_authz); |
| 1362 | dest->tls_authz = QAPI_CLONE(StrOrNull, params->tls_authz); |
| 1363 | } |
| 1364 | |
| 1365 | if (params->has_max_bandwidth) { |
| 1366 | dest->max_bandwidth = params->max_bandwidth; |
| 1367 | } |
| 1368 | |
| 1369 | if (params->has_avail_switchover_bandwidth) { |
| 1370 | dest->avail_switchover_bandwidth = params->avail_switchover_bandwidth; |
| 1371 | } |
| 1372 | |
| 1373 | if (params->has_downtime_limit) { |
| 1374 | dest->downtime_limit = params->downtime_limit; |
| 1375 | } |
| 1376 | |
| 1377 | if (params->has_x_checkpoint_delay) { |
| 1378 | dest->x_checkpoint_delay = params->x_checkpoint_delay; |
| 1379 | } |
| 1380 | |
| 1381 | if (params->has_multifd_channels) { |
| 1382 | dest->multifd_channels = params->multifd_channels; |
| 1383 | } |
| 1384 | if (params->has_multifd_compression) { |
| 1385 | dest->multifd_compression = params->multifd_compression; |
| 1386 | } |
| 1387 | if (params->has_multifd_qatzip_level) { |
| 1388 | dest->multifd_qatzip_level = params->multifd_qatzip_level; |
| 1389 | } |
| 1390 | if (params->has_multifd_zlib_level) { |
| 1391 | dest->multifd_zlib_level = params->multifd_zlib_level; |
| 1392 | } |
| 1393 | if (params->has_multifd_zstd_level) { |
| 1394 | dest->multifd_zstd_level = params->multifd_zstd_level; |
| 1395 | } |
| 1396 | if (params->has_xbzrle_cache_size) { |
| 1397 | dest->xbzrle_cache_size = params->xbzrle_cache_size; |
| 1398 | } |
| 1399 | if (params->has_max_postcopy_bandwidth) { |
| 1400 | dest->max_postcopy_bandwidth = params->max_postcopy_bandwidth; |
| 1401 | } |
| 1402 | if (params->has_max_cpu_throttle) { |
| 1403 | dest->max_cpu_throttle = params->max_cpu_throttle; |
| 1404 | } |
| 1405 | if (params->has_announce_initial) { |
| 1406 | dest->announce_initial = params->announce_initial; |
| 1407 | } |
| 1408 | if (params->has_announce_max) { |
| 1409 | dest->announce_max = params->announce_max; |
| 1410 | } |
| 1411 | if (params->has_announce_rounds) { |
| 1412 | dest->announce_rounds = params->announce_rounds; |
| 1413 | } |
| 1414 | if (params->has_announce_step) { |
| 1415 | dest->announce_step = params->announce_step; |
| 1416 | } |
| 1417 | |
| 1418 | if (params->has_block_bitmap_mapping) { |
| 1419 | qapi_free_BitmapMigrationNodeAliasList(dest->block_bitmap_mapping); |
| 1420 | dest->block_bitmap_mapping = QAPI_CLONE(BitmapMigrationNodeAliasList, |
| 1421 | params->block_bitmap_mapping); |
| 1422 | } |
| 1423 | |
| 1424 | if (params->has_x_vcpu_dirty_limit_period) { |
| 1425 | dest->x_vcpu_dirty_limit_period = |
| 1426 | params->x_vcpu_dirty_limit_period; |
| 1427 | } |
| 1428 | if (params->has_vcpu_dirty_limit) { |
| 1429 | dest->vcpu_dirty_limit = params->vcpu_dirty_limit; |
| 1430 | } |
| 1431 | |
| 1432 | if (params->has_mode) { |
| 1433 | dest->mode = params->mode; |
| 1434 | } |
| 1435 | |
| 1436 | if (params->has_zero_page_detection) { |
| 1437 | dest->zero_page_detection = params->zero_page_detection; |
| 1438 | } |
| 1439 | |
| 1440 | if (params->has_direct_io) { |
| 1441 | dest->direct_io = params->direct_io; |
| 1442 | } |
| 1443 | |
| 1444 | if (params->has_x_rdma_chunk_size) { |
| 1445 | dest->x_rdma_chunk_size = params->x_rdma_chunk_size; |
| 1446 | } |
| 1447 | |
| 1448 | if (params->has_cpr_exec_command) { |
| 1449 | qapi_free_strList(dest->cpr_exec_command); |
| 1450 | dest->cpr_exec_command = QAPI_CLONE(strList, params->cpr_exec_command); |
| 1451 | } |
| 1452 | } |
| 1453 | |
| 1454 | static void migrate_params_apply(MigrationParameters *params) |
| 1455 | { |
| 1456 | MigrationState *s = migrate_get_current(); |
| 1457 | |
| 1458 | /* TODO use QAPI_CLONE() instead of duplicating it inline */ |
| 1459 | |
| 1460 | if (params->has_throttle_trigger_threshold) { |
| 1461 | s->parameters.throttle_trigger_threshold = params->throttle_trigger_threshold; |
| 1462 | } |
| 1463 | |
| 1464 | if (params->has_cpu_throttle_initial) { |
| 1465 | s->parameters.cpu_throttle_initial = params->cpu_throttle_initial; |
| 1466 | } |
| 1467 | |
| 1468 | if (params->has_cpu_throttle_increment) { |
| 1469 | s->parameters.cpu_throttle_increment = params->cpu_throttle_increment; |
| 1470 | } |
| 1471 | |
| 1472 | if (params->has_cpu_throttle_tailslow) { |
| 1473 | s->parameters.cpu_throttle_tailslow = params->cpu_throttle_tailslow; |
| 1474 | } |
| 1475 | |
| 1476 | if (params->tls_creds) { |
| 1477 | qapi_free_StrOrNull(s->parameters.tls_creds); |
| 1478 | s->parameters.tls_creds = QAPI_CLONE(StrOrNull, params->tls_creds); |
| 1479 | } |
| 1480 | |
| 1481 | if (params->tls_hostname) { |
| 1482 | qapi_free_StrOrNull(s->parameters.tls_hostname); |
| 1483 | s->parameters.tls_hostname = QAPI_CLONE(StrOrNull, |
| 1484 | params->tls_hostname); |
| 1485 | } |
| 1486 | |
| 1487 | if (params->tls_authz) { |
| 1488 | qapi_free_StrOrNull(s->parameters.tls_authz); |
| 1489 | s->parameters.tls_authz = QAPI_CLONE(StrOrNull, params->tls_authz); |
| 1490 | } |
| 1491 | |
| 1492 | if (params->has_max_bandwidth) { |
| 1493 | s->parameters.max_bandwidth = params->max_bandwidth; |
| 1494 | } |
| 1495 | |
| 1496 | if (params->has_avail_switchover_bandwidth) { |
| 1497 | s->parameters.avail_switchover_bandwidth = params->avail_switchover_bandwidth; |
| 1498 | } |
| 1499 | |
| 1500 | if (params->has_downtime_limit) { |
| 1501 | s->parameters.downtime_limit = params->downtime_limit; |
| 1502 | } |
| 1503 | |
| 1504 | if (params->has_x_checkpoint_delay) { |
| 1505 | s->parameters.x_checkpoint_delay = params->x_checkpoint_delay; |
| 1506 | } |
| 1507 | |
| 1508 | if (params->has_multifd_channels) { |
| 1509 | s->parameters.multifd_channels = params->multifd_channels; |
| 1510 | } |
| 1511 | if (params->has_multifd_compression) { |
| 1512 | s->parameters.multifd_compression = params->multifd_compression; |
| 1513 | } |
| 1514 | if (params->has_multifd_qatzip_level) { |
| 1515 | s->parameters.multifd_qatzip_level = params->multifd_qatzip_level; |
| 1516 | } |
| 1517 | if (params->has_multifd_zlib_level) { |
| 1518 | s->parameters.multifd_zlib_level = params->multifd_zlib_level; |
| 1519 | } |
| 1520 | if (params->has_multifd_zstd_level) { |
| 1521 | s->parameters.multifd_zstd_level = params->multifd_zstd_level; |
| 1522 | } |
| 1523 | if (params->has_xbzrle_cache_size) { |
| 1524 | s->parameters.xbzrle_cache_size = params->xbzrle_cache_size; |
| 1525 | } |
| 1526 | if (params->has_max_postcopy_bandwidth) { |
| 1527 | s->parameters.max_postcopy_bandwidth = params->max_postcopy_bandwidth; |
| 1528 | } |
| 1529 | if (params->has_max_cpu_throttle) { |
| 1530 | s->parameters.max_cpu_throttle = params->max_cpu_throttle; |
| 1531 | } |
| 1532 | if (params->has_announce_initial) { |
| 1533 | s->parameters.announce_initial = params->announce_initial; |
| 1534 | } |
| 1535 | if (params->has_announce_max) { |
| 1536 | s->parameters.announce_max = params->announce_max; |
| 1537 | } |
| 1538 | if (params->has_announce_rounds) { |
| 1539 | s->parameters.announce_rounds = params->announce_rounds; |
| 1540 | } |
| 1541 | if (params->has_announce_step) { |
| 1542 | s->parameters.announce_step = params->announce_step; |
| 1543 | } |
| 1544 | |
| 1545 | if (params->has_block_bitmap_mapping) { |
| 1546 | qapi_free_BitmapMigrationNodeAliasList( |
| 1547 | s->parameters.block_bitmap_mapping); |
| 1548 | |
| 1549 | s->has_block_bitmap_mapping = true; |
| 1550 | s->parameters.block_bitmap_mapping = |
| 1551 | QAPI_CLONE(BitmapMigrationNodeAliasList, |
| 1552 | params->block_bitmap_mapping); |
| 1553 | } |
| 1554 | |
| 1555 | if (params->has_x_vcpu_dirty_limit_period) { |
| 1556 | s->parameters.x_vcpu_dirty_limit_period = |
| 1557 | params->x_vcpu_dirty_limit_period; |
| 1558 | } |
| 1559 | if (params->has_vcpu_dirty_limit) { |
| 1560 | s->parameters.vcpu_dirty_limit = params->vcpu_dirty_limit; |
| 1561 | } |
| 1562 | |
| 1563 | if (params->has_mode) { |
| 1564 | s->parameters.mode = params->mode; |
| 1565 | } |
| 1566 | |
| 1567 | if (params->has_zero_page_detection) { |
| 1568 | s->parameters.zero_page_detection = params->zero_page_detection; |
| 1569 | } |
| 1570 | |
| 1571 | if (params->has_direct_io) { |
| 1572 | s->parameters.direct_io = params->direct_io; |
| 1573 | } |
| 1574 | |
| 1575 | if (params->has_x_rdma_chunk_size) { |
| 1576 | s->parameters.x_rdma_chunk_size = params->x_rdma_chunk_size; |
| 1577 | } |
| 1578 | |
| 1579 | if (params->has_cpr_exec_command) { |
| 1580 | qapi_free_strList(s->parameters.cpr_exec_command); |
| 1581 | s->parameters.cpr_exec_command = |
| 1582 | QAPI_CLONE(strList, params->cpr_exec_command); |
| 1583 | } |
| 1584 | } |
| 1585 | |
| 1586 | void qmp_migrate_set_parameters(MigrationParameters *params, Error **errp) |
| 1587 | { |
| 1588 | MigrationParameters tmp; |
| 1589 | |
| 1590 | /* |
| 1591 | * Convert QTYPE_QNULL and NULL to the empty string (""). Even |
| 1592 | * though NULL is cleaner to deal with in C code, that would force |
| 1593 | * query-migrate-parameters to convert it once more to the empty |
| 1594 | * string, so avoid that. The migrate_tls_*() helpers that expose |
| 1595 | * the options to the rest of the migration code already use |
| 1596 | * return NULL when the empty string is found. |
| 1597 | */ |
| 1598 | tls_opt_to_str(params->tls_creds); |
| 1599 | tls_opt_to_str(params->tls_hostname); |
| 1600 | tls_opt_to_str(params->tls_authz); |
| 1601 | |
| 1602 | migrate_params_test_apply(params, &tmp); |
| 1603 | |
| 1604 | if (migrate_params_check(&tmp, errp)) { |
| 1605 | migrate_params_apply(params); |
| 1606 | migrate_post_update_params(params, errp); |
| 1607 | } |
| 1608 | |
| 1609 | migrate_tls_opts_free(&tmp); |
| 1610 | qapi_free_BitmapMigrationNodeAliasList(tmp.block_bitmap_mapping); |
| 1611 | qapi_free_strList(tmp.cpr_exec_command); |
| 1612 | } |