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48685a8e | 1 | # -*- Mode: Python -*- |
f7160f32 | 2 | # vim: filetype=python |
48685a8e MA |
3 | # |
4 | ||
5 | ## | |
6 | # = Migration | |
7 | ## | |
8 | ||
9 | { 'include': 'common.json' } | |
9aca82ba | 10 | { 'include': 'sockets.json' } |
48685a8e MA |
11 | |
12 | ## | |
13 | # @MigrationStats: | |
14 | # | |
15 | # Detailed migration status. | |
16 | # | |
17 | # @transferred: amount of bytes already transferred to the target VM | |
18 | # | |
a937b6aa MA |
19 | # @remaining: amount of bytes remaining to be transferred to the |
20 | # target VM | |
48685a8e MA |
21 | # |
22 | # @total: total amount of bytes involved in the migration process | |
23 | # | |
24 | # @duplicate: number of duplicate (zero) pages (since 1.2) | |
25 | # | |
26 | # @skipped: number of skipped zero pages (since 1.5) | |
27 | # | |
28 | # @normal: number of normal pages (since 1.2) | |
29 | # | |
30 | # @normal-bytes: number of normal bytes sent (since 1.2) | |
31 | # | |
a937b6aa MA |
32 | # @dirty-pages-rate: number of pages dirtied by second by the guest |
33 | # (since 1.3) | |
48685a8e | 34 | # |
a937b6aa | 35 | # @mbps: throughput in megabits/sec. (since 1.6) |
48685a8e | 36 | # |
a937b6aa MA |
37 | # @dirty-sync-count: number of times that dirty ram was synchronized |
38 | # (since 2.1) | |
48685a8e | 39 | # |
a937b6aa MA |
40 | # @postcopy-requests: The number of page requests received from the |
41 | # destination (since 2.7) | |
48685a8e MA |
42 | # |
43 | # @page-size: The number of bytes per page for the various page-based | |
a937b6aa | 44 | # statistics (since 2.10) |
48685a8e | 45 | # |
a61c45bd JQ |
46 | # @multifd-bytes: The number of bytes sent through multifd (since 3.0) |
47 | # | |
aecbfe9c | 48 | # @pages-per-second: the number of memory pages transferred per second |
a937b6aa | 49 | # (Since 4.0) |
aecbfe9c | 50 | # |
ae680668 | 51 | # @precopy-bytes: The number of bytes sent in the pre-copy phase |
a937b6aa | 52 | # (since 7.0). |
ae680668 DE |
53 | # |
54 | # @downtime-bytes: The number of bytes sent while the guest is paused | |
a937b6aa | 55 | # (since 7.0). |
ae680668 DE |
56 | # |
57 | # @postcopy-bytes: The number of bytes sent during the post-copy phase | |
a937b6aa MA |
58 | # (since 7.0). |
59 | # | |
60 | # @dirty-sync-missed-zero-copy: Number of times dirty RAM | |
61 | # synchronization could not avoid copying dirty pages. This is | |
62 | # between 0 and @dirty-sync-count * @multifd-channels. (since | |
63 | # 7.1) | |
ae680668 | 64 | # |
9bc6e893 | 65 | # Since: 0.14 |
48685a8e MA |
66 | ## |
67 | { 'struct': 'MigrationStats', | |
68 | 'data': {'transferred': 'int', 'remaining': 'int', 'total': 'int' , | |
69 | 'duplicate': 'int', 'skipped': 'int', 'normal': 'int', | |
fd658a7b JQ |
70 | 'normal-bytes': 'int', 'dirty-pages-rate': 'int', |
71 | 'mbps': 'number', 'dirty-sync-count': 'int', | |
72 | 'postcopy-requests': 'int', 'page-size': 'int', | |
73 | 'multifd-bytes': 'uint64', 'pages-per-second': 'uint64', | |
74 | 'precopy-bytes': 'uint64', 'downtime-bytes': 'uint64', | |
75 | 'postcopy-bytes': 'uint64', | |
76 | 'dirty-sync-missed-zero-copy': 'uint64' } } | |
48685a8e MA |
77 | |
78 | ## | |
79 | # @XBZRLECacheStats: | |
80 | # | |
81 | # Detailed XBZRLE migration cache statistics | |
82 | # | |
83 | # @cache-size: XBZRLE cache size | |
84 | # | |
85 | # @bytes: amount of bytes already transferred to the target VM | |
86 | # | |
87 | # @pages: amount of pages transferred to the target VM | |
88 | # | |
89 | # @cache-miss: number of cache miss | |
90 | # | |
91 | # @cache-miss-rate: rate of cache miss (since 2.1) | |
92 | # | |
e460a4b1 WW |
93 | # @encoding-rate: rate of encoded bytes (since 5.1) |
94 | # | |
48685a8e MA |
95 | # @overflow: number of overflows |
96 | # | |
97 | # Since: 1.2 | |
98 | ## | |
99 | { 'struct': 'XBZRLECacheStats', | |
8b9407a0 | 100 | 'data': {'cache-size': 'size', 'bytes': 'int', 'pages': 'int', |
48685a8e | 101 | 'cache-miss': 'int', 'cache-miss-rate': 'number', |
e460a4b1 | 102 | 'encoding-rate': 'number', 'overflow': 'int' } } |
48685a8e | 103 | |
76e03000 XG |
104 | ## |
105 | # @CompressionStats: | |
106 | # | |
107 | # Detailed migration compression statistics | |
108 | # | |
109 | # @pages: amount of pages compressed and transferred to the target VM | |
110 | # | |
a937b6aa MA |
111 | # @busy: count of times that no free thread was available to compress |
112 | # data | |
76e03000 XG |
113 | # |
114 | # @busy-rate: rate of thread busy | |
115 | # | |
116 | # @compressed-size: amount of bytes after compression | |
117 | # | |
118 | # @compression-rate: rate of compressed size | |
119 | # | |
120 | # Since: 3.1 | |
121 | ## | |
122 | { 'struct': 'CompressionStats', | |
123 | 'data': {'pages': 'int', 'busy': 'int', 'busy-rate': 'number', | |
dbb28bc8 | 124 | 'compressed-size': 'int', 'compression-rate': 'number' } } |
76e03000 | 125 | |
48685a8e MA |
126 | ## |
127 | # @MigrationStatus: | |
128 | # | |
129 | # An enumeration of migration status. | |
130 | # | |
131 | # @none: no migration has ever happened. | |
132 | # | |
133 | # @setup: migration process has been initiated. | |
134 | # | |
135 | # @cancelling: in the process of cancelling migration. | |
136 | # | |
137 | # @cancelled: cancelling migration is finished. | |
138 | # | |
139 | # @active: in the process of doing migration. | |
140 | # | |
a937b6aa MA |
141 | # @postcopy-active: like active, but now in postcopy mode. (since |
142 | # 2.5) | |
48685a8e | 143 | # |
a937b6aa | 144 | # @postcopy-paused: during postcopy but paused. (since 3.0) |
a688d2c1 | 145 | # |
a937b6aa MA |
146 | # @postcopy-recover: trying to recover from a paused postcopy. (since |
147 | # 3.0) | |
135b87b4 | 148 | # |
48685a8e MA |
149 | # @completed: migration is finished. |
150 | # | |
151 | # @failed: some error occurred during migration process. | |
152 | # | |
a937b6aa MA |
153 | # @colo: VM is in the process of fault tolerance, VM can not get into |
154 | # this state unless colo capability is enabled for migration. | |
155 | # (since 2.8) | |
48685a8e | 156 | # |
a937b6aa | 157 | # @pre-switchover: Paused before device serialisation. (since 2.11) |
31e06077 | 158 | # |
a937b6aa MA |
159 | # @device: During device serialisation when pause-before-switchover is |
160 | # enabled (since 2.11) | |
31e06077 | 161 | # |
a937b6aa MA |
162 | # @wait-unplug: wait for device unplug request by guest OS to be |
163 | # completed. (since 4.2) | |
c7e0acd5 | 164 | # |
48685a8e | 165 | # Since: 2.3 |
48685a8e MA |
166 | ## |
167 | { 'enum': 'MigrationStatus', | |
168 | 'data': [ 'none', 'setup', 'cancelling', 'cancelled', | |
a688d2c1 | 169 | 'active', 'postcopy-active', 'postcopy-paused', |
135b87b4 | 170 | 'postcopy-recover', 'completed', 'failed', 'colo', |
c7e0acd5 | 171 | 'pre-switchover', 'device', 'wait-unplug' ] } |
3710586c KW |
172 | ## |
173 | # @VfioStats: | |
174 | # | |
175 | # Detailed VFIO devices migration statistics | |
176 | # | |
a937b6aa MA |
177 | # @transferred: amount of bytes transferred to the target VM by VFIO |
178 | # devices | |
3710586c KW |
179 | # |
180 | # Since: 5.2 | |
3710586c KW |
181 | ## |
182 | { 'struct': 'VfioStats', | |
183 | 'data': {'transferred': 'int' } } | |
48685a8e MA |
184 | |
185 | ## | |
186 | # @MigrationInfo: | |
187 | # | |
188 | # Information about current migration process. | |
189 | # | |
190 | # @status: @MigrationStatus describing the current migration status. | |
a937b6aa MA |
191 | # If this field is not returned, no migration process has been |
192 | # initiated | |
48685a8e | 193 | # |
a937b6aa MA |
194 | # @ram: @MigrationStats containing detailed migration status, only |
195 | # returned if status is 'active' or 'completed'(since 1.2) | |
48685a8e | 196 | # |
a937b6aa MA |
197 | # @disk: @MigrationStats containing detailed disk migration status, |
198 | # only returned if status is 'active' and it is a block migration | |
48685a8e MA |
199 | # |
200 | # @xbzrle-cache: @XBZRLECacheStats containing detailed XBZRLE | |
a937b6aa MA |
201 | # migration statistics, only returned if XBZRLE feature is on and |
202 | # status is 'active' or 'completed' (since 1.2) | |
48685a8e MA |
203 | # |
204 | # @total-time: total amount of milliseconds since migration started. | |
a937b6aa MA |
205 | # If migration has ended, it returns the total migration time. |
206 | # (since 1.2) | |
48685a8e | 207 | # |
a937b6aa MA |
208 | # @downtime: only present when migration finishes correctly total |
209 | # downtime in milliseconds for the guest. (since 1.3) | |
48685a8e | 210 | # |
a937b6aa MA |
211 | # @expected-downtime: only present while migration is active expected |
212 | # downtime in milliseconds for the guest in last walk of the dirty | |
213 | # bitmap. (since 1.3) | |
48685a8e | 214 | # |
a660eed4 | 215 | # @setup-time: amount of setup time in milliseconds *before* the |
a937b6aa MA |
216 | # iterations begin but *after* the QMP command is issued. This is |
217 | # designed to provide an accounting of any activities (such as | |
218 | # RDMA pinning) which may be expensive, but do not actually occur | |
219 | # during the iterative migration rounds themselves. (since 1.6) | |
48685a8e MA |
220 | # |
221 | # @cpu-throttle-percentage: percentage of time guest cpus are being | |
a937b6aa MA |
222 | # throttled during auto-converge. This is only present when |
223 | # auto-converge has started throttling guest cpus. (Since 2.7) | |
48685a8e MA |
224 | # |
225 | # @error-desc: the human readable error description string, when | |
a937b6aa MA |
226 | # @status is 'failed'. Clients should not attempt to parse the |
227 | # error strings. (Since 2.7) | |
65ace060 | 228 | # |
a937b6aa MA |
229 | # @postcopy-blocktime: total time when all vCPU were blocked during |
230 | # postcopy live migration. This is only present when the | |
231 | # postcopy-blocktime migration capability is enabled. (Since 3.0) | |
65ace060 | 232 | # |
a937b6aa MA |
233 | # @postcopy-vcpu-blocktime: list of the postcopy blocktime per vCPU. |
234 | # This is only present when the postcopy-blocktime migration | |
235 | # capability is enabled. (Since 3.0) | |
65ace060 | 236 | # |
a937b6aa MA |
237 | # @compression: migration compression statistics, only returned if |
238 | # compression feature is on and status is 'active' or 'completed' | |
239 | # (Since 3.1) | |
48685a8e | 240 | # |
a937b6aa MA |
241 | # @socket-address: Only used for tcp, to know what the real port is |
242 | # (Since 4.0) | |
9aca82ba | 243 | # |
a937b6aa MA |
244 | # @vfio: @VfioStats containing detailed VFIO devices migration |
245 | # statistics, only returned if VFIO device is present, migration | |
246 | # is supported by all VFIO devices and status is 'active' or | |
247 | # 'completed' (since 5.2) | |
3710586c | 248 | # |
a937b6aa MA |
249 | # @blocked-reasons: A list of reasons an outgoing migration is |
250 | # blocked. Present and non-empty when migration is blocked. | |
251 | # (since 6.0) | |
e11ce6c0 | 252 | # |
15699cf5 HH |
253 | # @dirty-limit-throttle-time-per-round: Maximum throttle time (in microseconds) of virtual |
254 | # CPUs each dirty ring full round, which shows how | |
255 | # MigrationCapability dirty-limit affects the guest | |
256 | # during live migration. (since 8.1) | |
257 | # | |
258 | # @dirty-limit-ring-full-time: Estimated average dirty ring full time (in microseconds) | |
259 | # each dirty ring full round, note that the value equals | |
260 | # dirty ring memory size divided by average dirty page rate | |
261 | # of virtual CPU, which can be used to observe the average | |
262 | # memory load of virtual CPU indirectly. Note that zero | |
263 | # means guest doesn't dirty memory (since 8.1) | |
264 | # | |
9bc6e893 | 265 | # Since: 0.14 |
48685a8e MA |
266 | ## |
267 | { 'struct': 'MigrationInfo', | |
268 | 'data': {'*status': 'MigrationStatus', '*ram': 'MigrationStats', | |
269 | '*disk': 'MigrationStats', | |
3710586c | 270 | '*vfio': 'VfioStats', |
48685a8e MA |
271 | '*xbzrle-cache': 'XBZRLECacheStats', |
272 | '*total-time': 'int', | |
273 | '*expected-downtime': 'int', | |
274 | '*downtime': 'int', | |
275 | '*setup-time': 'int', | |
276 | '*cpu-throttle-percentage': 'int', | |
65ace060 | 277 | '*error-desc': 'str', |
3af8554b | 278 | '*blocked-reasons': ['str'], |
fd658a7b | 279 | '*postcopy-blocktime': 'uint32', |
76e03000 | 280 | '*postcopy-vcpu-blocktime': ['uint32'], |
9aca82ba | 281 | '*compression': 'CompressionStats', |
15699cf5 HH |
282 | '*socket-address': ['SocketAddress'], |
283 | '*dirty-limit-throttle-time-per-round': 'uint64', | |
284 | '*dirty-limit-ring-full-time': 'uint64'} } | |
48685a8e MA |
285 | |
286 | ## | |
287 | # @query-migrate: | |
288 | # | |
a937b6aa | 289 | # Returns information about current migration process. If migration |
48685a8e MA |
290 | # is active there will be another json-object with RAM migration |
291 | # status and if block migration is active another one with block | |
292 | # migration status. | |
293 | # | |
294 | # Returns: @MigrationInfo | |
295 | # | |
9bc6e893 | 296 | # Since: 0.14 |
48685a8e | 297 | # |
37fa48a4 | 298 | # Examples: |
48685a8e MA |
299 | # |
300 | # 1. Before the first migration | |
301 | # | |
302 | # -> { "execute": "query-migrate" } | |
303 | # <- { "return": {} } | |
304 | # | |
305 | # 2. Migration is done and has succeeded | |
306 | # | |
307 | # -> { "execute": "query-migrate" } | |
308 | # <- { "return": { | |
309 | # "status": "completed", | |
be1d2c49 | 310 | # "total-time":12345, |
311 | # "setup-time":12345, | |
312 | # "downtime":12345, | |
48685a8e MA |
313 | # "ram":{ |
314 | # "transferred":123, | |
315 | # "remaining":123, | |
316 | # "total":246, | |
48685a8e MA |
317 | # "duplicate":123, |
318 | # "normal":123, | |
319 | # "normal-bytes":123456, | |
320 | # "dirty-sync-count":15 | |
321 | # } | |
322 | # } | |
323 | # } | |
324 | # | |
325 | # 3. Migration is done and has failed | |
326 | # | |
327 | # -> { "execute": "query-migrate" } | |
328 | # <- { "return": { "status": "failed" } } | |
329 | # | |
330 | # 4. Migration is being performed and is not a block migration: | |
331 | # | |
332 | # -> { "execute": "query-migrate" } | |
333 | # <- { | |
334 | # "return":{ | |
335 | # "status":"active", | |
be1d2c49 | 336 | # "total-time":12345, |
337 | # "setup-time":12345, | |
338 | # "expected-downtime":12345, | |
48685a8e MA |
339 | # "ram":{ |
340 | # "transferred":123, | |
341 | # "remaining":123, | |
342 | # "total":246, | |
48685a8e MA |
343 | # "duplicate":123, |
344 | # "normal":123, | |
345 | # "normal-bytes":123456, | |
346 | # "dirty-sync-count":15 | |
347 | # } | |
348 | # } | |
349 | # } | |
350 | # | |
351 | # 5. Migration is being performed and is a block migration: | |
352 | # | |
353 | # -> { "execute": "query-migrate" } | |
354 | # <- { | |
355 | # "return":{ | |
356 | # "status":"active", | |
be1d2c49 | 357 | # "total-time":12345, |
358 | # "setup-time":12345, | |
359 | # "expected-downtime":12345, | |
48685a8e MA |
360 | # "ram":{ |
361 | # "total":1057024, | |
362 | # "remaining":1053304, | |
363 | # "transferred":3720, | |
48685a8e MA |
364 | # "duplicate":123, |
365 | # "normal":123, | |
366 | # "normal-bytes":123456, | |
367 | # "dirty-sync-count":15 | |
368 | # }, | |
369 | # "disk":{ | |
370 | # "total":20971520, | |
371 | # "remaining":20880384, | |
372 | # "transferred":91136 | |
373 | # } | |
374 | # } | |
375 | # } | |
376 | # | |
377 | # 6. Migration is being performed and XBZRLE is active: | |
378 | # | |
379 | # -> { "execute": "query-migrate" } | |
380 | # <- { | |
381 | # "return":{ | |
382 | # "status":"active", | |
be1d2c49 | 383 | # "total-time":12345, |
384 | # "setup-time":12345, | |
385 | # "expected-downtime":12345, | |
48685a8e MA |
386 | # "ram":{ |
387 | # "total":1057024, | |
388 | # "remaining":1053304, | |
389 | # "transferred":3720, | |
48685a8e MA |
390 | # "duplicate":10, |
391 | # "normal":3333, | |
392 | # "normal-bytes":3412992, | |
393 | # "dirty-sync-count":15 | |
394 | # }, | |
395 | # "xbzrle-cache":{ | |
396 | # "cache-size":67108864, | |
397 | # "bytes":20971520, | |
398 | # "pages":2444343, | |
399 | # "cache-miss":2244, | |
400 | # "cache-miss-rate":0.123, | |
e460a4b1 | 401 | # "encoding-rate":80.1, |
48685a8e MA |
402 | # "overflow":34434 |
403 | # } | |
404 | # } | |
405 | # } | |
48685a8e MA |
406 | ## |
407 | { 'command': 'query-migrate', 'returns': 'MigrationInfo' } | |
408 | ||
409 | ## | |
410 | # @MigrationCapability: | |
411 | # | |
412 | # Migration capabilities enumeration | |
413 | # | |
a937b6aa MA |
414 | # @xbzrle: Migration supports xbzrle (Xor Based Zero Run Length |
415 | # Encoding). This feature allows us to minimize migration traffic | |
416 | # for certain work loads, by sending compressed difference of the | |
417 | # pages | |
418 | # | |
419 | # @rdma-pin-all: Controls whether or not the entire VM memory | |
420 | # footprint is mlock()'d on demand or all at once. Refer to | |
421 | # docs/rdma.txt for usage. Disabled by default. (since 2.0) | |
422 | # | |
423 | # @zero-blocks: During storage migration encode blocks of zeroes | |
424 | # efficiently. This essentially saves 1MB of zeroes per block on | |
425 | # the wire. Enabling requires source and target VM to support | |
426 | # this feature. To enable it is sufficient to enable the | |
427 | # capability on the source VM. The feature is disabled by default. | |
428 | # (since 1.6) | |
429 | # | |
430 | # @compress: Use multiple compression threads to accelerate live | |
431 | # migration. This feature can help to reduce the migration | |
432 | # traffic, by sending compressed pages. Please note that if | |
433 | # compress and xbzrle are both on, compress only takes effect in | |
434 | # the ram bulk stage, after that, it will be disabled and only | |
435 | # xbzrle takes effect, this can help to minimize migration | |
436 | # traffic. The feature is disabled by default. (since 2.4 ) | |
437 | # | |
438 | # @events: generate events for each migration state change (since 2.4 | |
439 | # ) | |
440 | # | |
441 | # @auto-converge: If enabled, QEMU will automatically throttle down | |
442 | # the guest to speed up convergence of RAM migration. (since 1.6) | |
443 | # | |
444 | # @postcopy-ram: Start executing on the migration target before all of | |
445 | # RAM has been migrated, pulling the remaining pages along as | |
446 | # needed. The capacity must have the same setting on both source | |
447 | # and target or migration will not even start. NOTE: If the | |
448 | # migration fails during postcopy the VM will fail. (since 2.6) | |
449 | # | |
450 | # @x-colo: If enabled, migration will never end, and the state of the | |
451 | # VM on the primary side will be migrated continuously to the VM | |
452 | # on secondary side, this process is called COarse-Grain LOck | |
453 | # Stepping (COLO) for Non-stop Service. (since 2.8) | |
454 | # | |
455 | # @release-ram: if enabled, qemu will free the migrated ram pages on | |
456 | # the source during postcopy-ram migration. (since 2.9) | |
48685a8e MA |
457 | # |
458 | # @block: If enabled, QEMU will also migrate the contents of all block | |
a937b6aa MA |
459 | # devices. Default is disabled. A possible alternative uses |
460 | # mirror jobs to a builtin NBD server on the destination, which | |
461 | # offers more flexibility. (Since 2.10) | |
48685a8e MA |
462 | # |
463 | # @return-path: If enabled, migration will use the return path even | |
a937b6aa | 464 | # for precopy. (since 2.10) |
48685a8e | 465 | # |
a937b6aa MA |
466 | # @pause-before-switchover: Pause outgoing migration before |
467 | # serialising device state and before disabling block IO (since | |
468 | # 2.11) | |
93fbd031 | 469 | # |
cbfd6c95 | 470 | # @multifd: Use more than one fd for migration (since 4.0) |
30126bbf | 471 | # |
55efc8c2 | 472 | # @dirty-bitmaps: If enabled, QEMU will migrate named dirty bitmaps. |
a937b6aa | 473 | # (since 2.12) |
55efc8c2 | 474 | # |
f22f928e | 475 | # @postcopy-blocktime: Calculate downtime for postcopy live migration |
a937b6aa | 476 | # (since 3.0) |
f22f928e | 477 | # |
a937b6aa MA |
478 | # @late-block-activate: If enabled, the destination will not activate |
479 | # block devices (and thus take locks) immediately at the end of | |
480 | # migration. (since 3.0) | |
0f073f44 | 481 | # |
b0182e53 SS |
482 | # @x-ignore-shared: If enabled, QEMU will not migrate shared memory that is |
483 | # accessible on the destination machine. (since 4.0) | |
18269069 | 484 | # |
b9d68df6 | 485 | # @validate-uuid: Send the UUID of the source to allow the destination |
a937b6aa MA |
486 | # to ensure it is the same. (since 4.2) |
487 | # | |
488 | # @background-snapshot: If enabled, the migration stream will be a | |
489 | # snapshot of the VM exactly at the point when the migration | |
490 | # procedure starts. The VM RAM is saved with running VM. (since | |
491 | # 6.0) | |
492 | # | |
493 | # @zero-copy-send: Controls behavior on sending memory pages on | |
494 | # migration. When true, enables a zero-copy mechanism for sending | |
495 | # memory pages, if host supports it. Requires that QEMU be | |
496 | # permitted to use locked memory for guest RAM pages. (since 7.1) | |
497 | # | |
498 | # @postcopy-preempt: If enabled, the migration process will allow | |
499 | # postcopy requests to preempt precopy stream, so postcopy | |
500 | # requests will be handled faster. This is a performance feature | |
501 | # and should not affect the correctness of postcopy migration. | |
502 | # (since 7.1) | |
1abaec9a | 503 | # |
6574232f AH |
504 | # @switchover-ack: If enabled, migration will not stop the source VM |
505 | # and complete the migration until an ACK is received from the | |
506 | # destination that it's OK to do so. Exactly when this ACK is | |
507 | # sent depends on the migrated devices that use this feature. | |
508 | # For example, a device can use it to make sure some of its data | |
509 | # is sent and loaded in the destination before doing switchover. | |
510 | # This can reduce downtime if devices that support this capability | |
511 | # are present. 'return-path' capability must be enabled to use | |
512 | # it. (since 8.1) | |
513 | # | |
dc623955 HH |
514 | # @dirty-limit: If enabled, migration will use the dirty-limit algo to |
515 | # throttle down guest instead of auto-converge algo. | |
516 | # Throttle algo only works when vCPU's dirtyrate greater | |
517 | # than 'vcpu-dirty-limit', read processes in guest os | |
518 | # aren't penalized any more, so this algo can improve | |
519 | # performance of vCPU during live migration. This is an | |
520 | # optional performance feature and should not affect the | |
521 | # correctness of the existing auto-converge algo. | |
522 | # (since 8.1) | |
523 | # | |
9fb49daa | 524 | # Features: |
a937b6aa | 525 | # |
9fb49daa MA |
526 | # @unstable: Members @x-colo and @x-ignore-shared are experimental. |
527 | # | |
48685a8e MA |
528 | # Since: 1.2 |
529 | ## | |
530 | { 'enum': 'MigrationCapability', | |
531 | 'data': ['xbzrle', 'rdma-pin-all', 'auto-converge', 'zero-blocks', | |
9fb49daa MA |
532 | 'compress', 'events', 'postcopy-ram', |
533 | { 'name': 'x-colo', 'features': [ 'unstable' ] }, | |
534 | 'release-ram', | |
cbfd6c95 | 535 | 'block', 'return-path', 'pause-before-switchover', 'multifd', |
18269069 | 536 | 'dirty-bitmaps', 'postcopy-blocktime', 'late-block-activate', |
9fb49daa | 537 | { 'name': 'x-ignore-shared', 'features': [ 'unstable' ] }, |
1abaec9a | 538 | 'validate-uuid', 'background-snapshot', |
dc623955 HH |
539 | 'zero-copy-send', 'postcopy-preempt', 'switchover-ack', |
540 | 'dirty-limit'] } | |
48685a8e MA |
541 | |
542 | ## | |
543 | # @MigrationCapabilityStatus: | |
544 | # | |
545 | # Migration capability information | |
546 | # | |
547 | # @capability: capability enum | |
548 | # | |
549 | # @state: capability state bool | |
550 | # | |
551 | # Since: 1.2 | |
552 | ## | |
553 | { 'struct': 'MigrationCapabilityStatus', | |
fd658a7b | 554 | 'data': { 'capability': 'MigrationCapability', 'state': 'bool' } } |
48685a8e MA |
555 | |
556 | ## | |
557 | # @migrate-set-capabilities: | |
558 | # | |
559 | # Enable/Disable the following migration capabilities (like xbzrle) | |
560 | # | |
561 | # @capabilities: json array of capability modifications to make | |
562 | # | |
563 | # Since: 1.2 | |
564 | # | |
565 | # Example: | |
566 | # | |
567 | # -> { "execute": "migrate-set-capabilities" , "arguments": | |
568 | # { "capabilities": [ { "capability": "xbzrle", "state": true } ] } } | |
37fa48a4 | 569 | # <- { "return": {} } |
48685a8e MA |
570 | ## |
571 | { 'command': 'migrate-set-capabilities', | |
572 | 'data': { 'capabilities': ['MigrationCapabilityStatus'] } } | |
573 | ||
574 | ## | |
575 | # @query-migrate-capabilities: | |
576 | # | |
577 | # Returns information about the current migration capabilities status | |
578 | # | |
d93ed1bd | 579 | # Returns: @MigrationCapabilityStatus |
48685a8e MA |
580 | # |
581 | # Since: 1.2 | |
582 | # | |
583 | # Example: | |
584 | # | |
585 | # -> { "execute": "query-migrate-capabilities" } | |
586 | # <- { "return": [ | |
587 | # {"state": false, "capability": "xbzrle"}, | |
588 | # {"state": false, "capability": "rdma-pin-all"}, | |
589 | # {"state": false, "capability": "auto-converge"}, | |
590 | # {"state": false, "capability": "zero-blocks"}, | |
591 | # {"state": false, "capability": "compress"}, | |
592 | # {"state": true, "capability": "events"}, | |
593 | # {"state": false, "capability": "postcopy-ram"}, | |
594 | # {"state": false, "capability": "x-colo"} | |
595 | # ]} | |
48685a8e MA |
596 | ## |
597 | { 'command': 'query-migrate-capabilities', 'returns': ['MigrationCapabilityStatus']} | |
598 | ||
96eef042 JQ |
599 | ## |
600 | # @MultiFDCompression: | |
601 | # | |
602 | # An enumeration of multifd compression methods. | |
603 | # | |
604 | # @none: no compression. | |
a937b6aa | 605 | # |
7ec2c2b3 | 606 | # @zlib: use zlib compression method. |
a937b6aa | 607 | # |
87dc6f5f | 608 | # @zstd: use zstd compression method. |
96eef042 JQ |
609 | # |
610 | # Since: 5.0 | |
96eef042 JQ |
611 | ## |
612 | { 'enum': 'MultiFDCompression', | |
87dc6f5f | 613 | 'data': [ 'none', 'zlib', |
8a9f1e1d | 614 | { 'name': 'zstd', 'if': 'CONFIG_ZSTD' } ] } |
96eef042 | 615 | |
6e9f21a2 PK |
616 | ## |
617 | # @BitmapMigrationBitmapAliasTransform: | |
618 | # | |
a937b6aa MA |
619 | # @persistent: If present, the bitmap will be made persistent or |
620 | # transient depending on this parameter. | |
6e9f21a2 PK |
621 | # |
622 | # Since: 6.0 | |
623 | ## | |
624 | { 'struct': 'BitmapMigrationBitmapAliasTransform', | |
625 | 'data': { | |
626 | '*persistent': 'bool' | |
627 | } } | |
628 | ||
31e4c354 HR |
629 | ## |
630 | # @BitmapMigrationBitmapAlias: | |
631 | # | |
632 | # @name: The name of the bitmap. | |
633 | # | |
634 | # @alias: An alias name for migration (for example the bitmap name on | |
a937b6aa | 635 | # the opposite site). |
31e4c354 | 636 | # |
a937b6aa MA |
637 | # @transform: Allows the modification of the migrated bitmap. (since |
638 | # 6.0) | |
6e9f21a2 | 639 | # |
31e4c354 HR |
640 | # Since: 5.2 |
641 | ## | |
642 | { 'struct': 'BitmapMigrationBitmapAlias', | |
643 | 'data': { | |
644 | 'name': 'str', | |
6e9f21a2 PK |
645 | 'alias': 'str', |
646 | '*transform': 'BitmapMigrationBitmapAliasTransform' | |
31e4c354 HR |
647 | } } |
648 | ||
649 | ## | |
650 | # @BitmapMigrationNodeAlias: | |
651 | # | |
652 | # Maps a block node name and the bitmaps it has to aliases for dirty | |
653 | # bitmap migration. | |
654 | # | |
655 | # @node-name: A block node name. | |
656 | # | |
a937b6aa MA |
657 | # @alias: An alias block node name for migration (for example the node |
658 | # name on the opposite site). | |
31e4c354 HR |
659 | # |
660 | # @bitmaps: Mappings for the bitmaps on this node. | |
661 | # | |
662 | # Since: 5.2 | |
663 | ## | |
664 | { 'struct': 'BitmapMigrationNodeAlias', | |
665 | 'data': { | |
666 | 'node-name': 'str', | |
667 | 'alias': 'str', | |
668 | 'bitmaps': [ 'BitmapMigrationBitmapAlias' ] | |
669 | } } | |
670 | ||
48685a8e MA |
671 | ## |
672 | # @MigrationParameter: | |
673 | # | |
674 | # Migration parameters enumeration | |
675 | # | |
a937b6aa MA |
676 | # @announce-initial: Initial delay (in milliseconds) before sending |
677 | # the first announce (Since 4.0) | |
ee3d96ba | 678 | # |
a937b6aa MA |
679 | # @announce-max: Maximum delay (in milliseconds) between packets in |
680 | # the announcement (Since 4.0) | |
ee3d96ba | 681 | # |
a937b6aa MA |
682 | # @announce-rounds: Number of self-announce packets sent after |
683 | # migration (Since 4.0) | |
ee3d96ba | 684 | # |
a937b6aa MA |
685 | # @announce-step: Increase in delay (in milliseconds) between |
686 | # subsequent packets in the announcement (Since 4.0) | |
ee3d96ba | 687 | # |
a937b6aa MA |
688 | # @compress-level: Set the compression level to be used in live |
689 | # migration, the compression level is an integer between 0 and 9, | |
690 | # where 0 means no compression, 1 means the best compression | |
691 | # speed, and 9 means best compression ratio which will consume | |
692 | # more CPU. | |
48685a8e | 693 | # |
a937b6aa MA |
694 | # @compress-threads: Set compression thread count to be used in live |
695 | # migration, the compression thread count is an integer between 1 | |
696 | # and 255. | |
48685a8e | 697 | # |
a937b6aa MA |
698 | # @compress-wait-thread: Controls behavior when all compression |
699 | # threads are currently busy. If true (default), wait for a free | |
700 | # compression thread to become available; otherwise, send the page | |
701 | # uncompressed. (Since 3.1) | |
1d58872a | 702 | # |
a937b6aa MA |
703 | # @decompress-threads: Set decompression thread count to be used in |
704 | # live migration, the decompression thread count is an integer | |
705 | # between 1 and 255. Usually, decompression is at least 4 times as | |
706 | # fast as compression, so set the decompress-threads to the number | |
707 | # about 1/4 of compress-threads is adequate. | |
48685a8e | 708 | # |
a937b6aa MA |
709 | # @throttle-trigger-threshold: The ratio of bytes_dirty_period and |
710 | # bytes_xfer_period to trigger throttling. It is expressed as | |
711 | # percentage. The default value is 50. (Since 5.0) | |
dc14a470 | 712 | # |
a937b6aa MA |
713 | # @cpu-throttle-initial: Initial percentage of time guest cpus are |
714 | # throttled when migration auto-converge is activated. The | |
715 | # default value is 20. (Since 2.7) | |
48685a8e MA |
716 | # |
717 | # @cpu-throttle-increment: throttle percentage increase each time | |
a937b6aa MA |
718 | # auto-converge detects that migration is not making progress. |
719 | # The default value is 10. (Since 2.7) | |
720 | # | |
721 | # @cpu-throttle-tailslow: Make CPU throttling slower at tail stage At | |
722 | # the tail stage of throttling, the Guest is very sensitive to CPU | |
723 | # percentage while the @cpu-throttle -increment is excessive | |
724 | # usually at tail stage. If this parameter is true, we will | |
725 | # compute the ideal CPU percentage used by the Guest, which may | |
726 | # exactly make the dirty rate match the dirty rate threshold. | |
727 | # Then we will choose a smaller throttle increment between the one | |
728 | # specified by @cpu-throttle-increment and the one generated by | |
729 | # ideal CPU percentage. Therefore, it is compatible to | |
730 | # traditional throttling, meanwhile the throttle increment won't | |
731 | # be excessive at tail stage. The default value is false. (Since | |
732 | # 5.1) | |
733 | # | |
734 | # @tls-creds: ID of the 'tls-creds' object that provides credentials | |
735 | # for establishing a TLS connection over the migration data | |
736 | # channel. On the outgoing side of the migration, the credentials | |
737 | # must be for a 'client' endpoint, while for the incoming side the | |
738 | # credentials must be for a 'server' endpoint. Setting this will | |
739 | # enable TLS for all migrations. The default is unset, resulting | |
740 | # in unsecured migration at the QEMU level. (Since 2.7) | |
741 | # | |
742 | # @tls-hostname: hostname of the target host for the migration. This | |
743 | # is required when using x509 based TLS credentials and the | |
744 | # migration URI does not already include a hostname. For example | |
745 | # if using fd: or exec: based migration, the hostname must be | |
746 | # provided so that the server's x509 certificate identity can be | |
747 | # validated. (Since 2.7) | |
748 | # | |
749 | # @tls-authz: ID of the 'authz' object subclass that provides access | |
750 | # control checking of the TLS x509 certificate distinguished name. | |
751 | # This object is only resolved at time of use, so can be deleted | |
752 | # and recreated on the fly while the migration server is active. | |
753 | # If missing, it will default to denying access (Since 4.0) | |
754 | # | |
755 | # @max-bandwidth: to set maximum speed for migration. maximum speed | |
756 | # in bytes per second. (Since 2.8) | |
757 | # | |
758 | # @downtime-limit: set maximum tolerated downtime for migration. | |
759 | # maximum downtime in milliseconds (Since 2.8) | |
760 | # | |
761 | # @x-checkpoint-delay: The delay time (in ms) between two COLO | |
762 | # checkpoints in periodic mode. (Since 2.8) | |
48685a8e MA |
763 | # |
764 | # @block-incremental: Affects how much storage is migrated when the | |
a937b6aa MA |
765 | # block migration capability is enabled. When false, the entire |
766 | # storage backing chain is migrated into a flattened image at the | |
767 | # destination; when true, only the active qcow2 layer is migrated | |
768 | # and the destination must already have access to the same backing | |
769 | # chain as was used on the source. (since 2.10) | |
48685a8e | 770 | # |
cbfd6c95 | 771 | # @multifd-channels: Number of channels used to migrate data in |
a937b6aa MA |
772 | # parallel. This is the same number that the number of sockets |
773 | # used for migration. The default value is 2 (since 4.0) | |
4075fb1c | 774 | # |
73af8dd8 | 775 | # @xbzrle-cache-size: cache size to be used by XBZRLE migration. It |
a937b6aa MA |
776 | # needs to be a multiple of the target page size and a power of 2 |
777 | # (Since 2.11) | |
73af8dd8 | 778 | # |
a937b6aa MA |
779 | # @max-postcopy-bandwidth: Background transfer bandwidth during |
780 | # postcopy. Defaults to 0 (unlimited). In bytes per second. | |
781 | # (Since 3.0) | |
4cbc9c7f | 782 | # |
a937b6aa MA |
783 | # @max-cpu-throttle: maximum cpu throttle percentage. Defaults to 99. |
784 | # (Since 3.1) | |
ee3d96ba | 785 | # |
a937b6aa MA |
786 | # @multifd-compression: Which compression method to use. Defaults to |
787 | # none. (Since 5.0) | |
96eef042 | 788 | # |
9004db48 | 789 | # @multifd-zlib-level: Set the compression level to be used in live |
a937b6aa MA |
790 | # migration, the compression level is an integer between 0 and 9, |
791 | # where 0 means no compression, 1 means the best compression | |
792 | # speed, and 9 means best compression ratio which will consume | |
793 | # more CPU. Defaults to 1. (Since 5.0) | |
9004db48 | 794 | # |
6a9ad154 | 795 | # @multifd-zstd-level: Set the compression level to be used in live |
a937b6aa MA |
796 | # migration, the compression level is an integer between 0 and 20, |
797 | # where 0 means no compression, 1 means the best compression | |
798 | # speed, and 20 means best compression ratio which will consume | |
799 | # more CPU. Defaults to 1. (Since 5.0) | |
abb6295b | 800 | # |
31e4c354 | 801 | # @block-bitmap-mapping: Maps block nodes and bitmaps on them to |
a937b6aa MA |
802 | # aliases for the purpose of dirty bitmap migration. Such aliases |
803 | # may for example be the corresponding names on the opposite site. | |
804 | # The mapping must be one-to-one, but not necessarily complete: On | |
805 | # the source, unmapped bitmaps and all bitmaps on unmapped nodes | |
806 | # will be ignored. On the destination, encountering an unmapped | |
807 | # alias in the incoming migration stream will result in a report, | |
808 | # and all further bitmap migration data will then be discarded. | |
809 | # Note that the destination does not know about bitmaps it does | |
810 | # not receive, so there is no limitation or requirement regarding | |
811 | # the number of bitmaps received, or how they are named, or on | |
812 | # which nodes they are placed. By default (when this parameter | |
813 | # has never been set), bitmap names are mapped to themselves. | |
814 | # Nodes are mapped to their block device name if there is one, and | |
815 | # to their node name otherwise. (Since 5.2) | |
31e4c354 | 816 | # |
4d807857 HH |
817 | # @x-vcpu-dirty-limit-period: Periodic time (in milliseconds) of dirty limit during |
818 | # live migration. Should be in the range 1 to 1000ms, | |
819 | # defaults to 1000ms. (Since 8.1) | |
820 | # | |
09f9ec99 HH |
821 | # @vcpu-dirty-limit: Dirtyrate limit (MB/s) during live migration. |
822 | # Defaults to 1. (Since 8.1) | |
823 | # | |
9fb49daa | 824 | # Features: |
a937b6aa | 825 | # |
4d807857 HH |
826 | # @unstable: Members @x-checkpoint-delay and @x-vcpu-dirty-limit-period |
827 | # are experimental. | |
9fb49daa | 828 | # |
48685a8e MA |
829 | # Since: 2.4 |
830 | ## | |
831 | { 'enum': 'MigrationParameter', | |
ee3d96ba DDAG |
832 | 'data': ['announce-initial', 'announce-max', |
833 | 'announce-rounds', 'announce-step', | |
834 | 'compress-level', 'compress-threads', 'decompress-threads', | |
dc14a470 | 835 | 'compress-wait-thread', 'throttle-trigger-threshold', |
48685a8e | 836 | 'cpu-throttle-initial', 'cpu-throttle-increment', |
cbbf8182 | 837 | 'cpu-throttle-tailslow', |
d2f1d29b | 838 | 'tls-creds', 'tls-hostname', 'tls-authz', 'max-bandwidth', |
9fb49daa MA |
839 | 'downtime-limit', |
840 | { 'name': 'x-checkpoint-delay', 'features': [ 'unstable' ] }, | |
841 | 'block-incremental', | |
cbfd6c95 | 842 | 'multifd-channels', |
4cbc9c7f | 843 | 'xbzrle-cache-size', 'max-postcopy-bandwidth', |
9004db48 | 844 | 'max-cpu-throttle', 'multifd-compression', |
4d807857 HH |
845 | 'multifd-zlib-level', 'multifd-zstd-level', |
846 | 'block-bitmap-mapping', | |
09f9ec99 HH |
847 | { 'name': 'x-vcpu-dirty-limit-period', 'features': ['unstable'] }, |
848 | 'vcpu-dirty-limit'] } | |
48685a8e MA |
849 | |
850 | ## | |
851 | # @MigrateSetParameters: | |
852 | # | |
a937b6aa MA |
853 | # @announce-initial: Initial delay (in milliseconds) before sending |
854 | # the first announce (Since 4.0) | |
ee3d96ba | 855 | # |
a937b6aa MA |
856 | # @announce-max: Maximum delay (in milliseconds) between packets in |
857 | # the announcement (Since 4.0) | |
ee3d96ba | 858 | # |
a937b6aa MA |
859 | # @announce-rounds: Number of self-announce packets sent after |
860 | # migration (Since 4.0) | |
ee3d96ba | 861 | # |
a937b6aa MA |
862 | # @announce-step: Increase in delay (in milliseconds) between |
863 | # subsequent packets in the announcement (Since 4.0) | |
ee3d96ba | 864 | # |
48685a8e MA |
865 | # @compress-level: compression level |
866 | # | |
867 | # @compress-threads: compression thread count | |
868 | # | |
a937b6aa MA |
869 | # @compress-wait-thread: Controls behavior when all compression |
870 | # threads are currently busy. If true (default), wait for a free | |
871 | # compression thread to become available; otherwise, send the page | |
872 | # uncompressed. (Since 3.1) | |
1d58872a | 873 | # |
48685a8e MA |
874 | # @decompress-threads: decompression thread count |
875 | # | |
a937b6aa MA |
876 | # @throttle-trigger-threshold: The ratio of bytes_dirty_period and |
877 | # bytes_xfer_period to trigger throttling. It is expressed as | |
878 | # percentage. The default value is 50. (Since 5.0) | |
dc14a470 | 879 | # |
48685a8e | 880 | # @cpu-throttle-initial: Initial percentage of time guest cpus are |
a937b6aa MA |
881 | # throttled when migration auto-converge is activated. The |
882 | # default value is 20. (Since 2.7) | |
48685a8e MA |
883 | # |
884 | # @cpu-throttle-increment: throttle percentage increase each time | |
a937b6aa MA |
885 | # auto-converge detects that migration is not making progress. |
886 | # The default value is 10. (Since 2.7) | |
887 | # | |
888 | # @cpu-throttle-tailslow: Make CPU throttling slower at tail stage At | |
889 | # the tail stage of throttling, the Guest is very sensitive to CPU | |
890 | # percentage while the @cpu-throttle -increment is excessive | |
891 | # usually at tail stage. If this parameter is true, we will | |
892 | # compute the ideal CPU percentage used by the Guest, which may | |
893 | # exactly make the dirty rate match the dirty rate threshold. | |
894 | # Then we will choose a smaller throttle increment between the one | |
895 | # specified by @cpu-throttle-increment and the one generated by | |
896 | # ideal CPU percentage. Therefore, it is compatible to | |
897 | # traditional throttling, meanwhile the throttle increment won't | |
898 | # be excessive at tail stage. The default value is false. (Since | |
899 | # 5.1) | |
cbbf8182 | 900 | # |
48685a8e | 901 | # @tls-creds: ID of the 'tls-creds' object that provides credentials |
a937b6aa MA |
902 | # for establishing a TLS connection over the migration data |
903 | # channel. On the outgoing side of the migration, the credentials | |
904 | # must be for a 'client' endpoint, while for the incoming side the | |
905 | # credentials must be for a 'server' endpoint. Setting this to a | |
906 | # non-empty string enables TLS for all migrations. An empty | |
907 | # string means that QEMU will use plain text mode for migration, | |
908 | # rather than TLS (Since 2.9) Previously (since 2.7), this was | |
909 | # reported by omitting tls-creds instead. | |
910 | # | |
911 | # @tls-hostname: hostname of the target host for the migration. This | |
912 | # is required when using x509 based TLS credentials and the | |
913 | # migration URI does not already include a hostname. For example | |
914 | # if using fd: or exec: based migration, the hostname must be | |
915 | # provided so that the server's x509 certificate identity can be | |
916 | # validated. (Since 2.7) An empty string means that QEMU will use | |
917 | # the hostname associated with the migration URI, if any. (Since | |
918 | # 2.9) Previously (since 2.7), this was reported by omitting | |
919 | # tls-hostname instead. | |
920 | # | |
921 | # @max-bandwidth: to set maximum speed for migration. maximum speed | |
922 | # in bytes per second. (Since 2.8) | |
923 | # | |
924 | # @downtime-limit: set maximum tolerated downtime for migration. | |
925 | # maximum downtime in milliseconds (Since 2.8) | |
926 | # | |
927 | # @x-checkpoint-delay: the delay time between two COLO checkpoints. | |
928 | # (Since 2.8) | |
48685a8e MA |
929 | # |
930 | # @block-incremental: Affects how much storage is migrated when the | |
a937b6aa MA |
931 | # block migration capability is enabled. When false, the entire |
932 | # storage backing chain is migrated into a flattened image at the | |
933 | # destination; when true, only the active qcow2 layer is migrated | |
934 | # and the destination must already have access to the same backing | |
935 | # chain as was used on the source. (since 2.10) | |
48685a8e | 936 | # |
cbfd6c95 | 937 | # @multifd-channels: Number of channels used to migrate data in |
a937b6aa MA |
938 | # parallel. This is the same number that the number of sockets |
939 | # used for migration. The default value is 2 (since 4.0) | |
4075fb1c | 940 | # |
73af8dd8 | 941 | # @xbzrle-cache-size: cache size to be used by XBZRLE migration. It |
a937b6aa MA |
942 | # needs to be a multiple of the target page size and a power of 2 |
943 | # (Since 2.11) | |
7e555c6c | 944 | # |
a937b6aa MA |
945 | # @max-postcopy-bandwidth: Background transfer bandwidth during |
946 | # postcopy. Defaults to 0 (unlimited). In bytes per second. | |
947 | # (Since 3.0) | |
4cbc9c7f | 948 | # |
a937b6aa MA |
949 | # @max-cpu-throttle: maximum cpu throttle percentage. The default |
950 | # value is 99. (Since 3.1) | |
4cbc9c7f | 951 | # |
a937b6aa MA |
952 | # @multifd-compression: Which compression method to use. Defaults to |
953 | # none. (Since 5.0) | |
96eef042 | 954 | # |
9004db48 | 955 | # @multifd-zlib-level: Set the compression level to be used in live |
a937b6aa MA |
956 | # migration, the compression level is an integer between 0 and 9, |
957 | # where 0 means no compression, 1 means the best compression | |
958 | # speed, and 9 means best compression ratio which will consume | |
959 | # more CPU. Defaults to 1. (Since 5.0) | |
9004db48 | 960 | # |
6a9ad154 | 961 | # @multifd-zstd-level: Set the compression level to be used in live |
a937b6aa MA |
962 | # migration, the compression level is an integer between 0 and 20, |
963 | # where 0 means no compression, 1 means the best compression | |
964 | # speed, and 20 means best compression ratio which will consume | |
965 | # more CPU. Defaults to 1. (Since 5.0) | |
6a9ad154 | 966 | # |
31e4c354 | 967 | # @block-bitmap-mapping: Maps block nodes and bitmaps on them to |
a937b6aa MA |
968 | # aliases for the purpose of dirty bitmap migration. Such aliases |
969 | # may for example be the corresponding names on the opposite site. | |
970 | # The mapping must be one-to-one, but not necessarily complete: On | |
971 | # the source, unmapped bitmaps and all bitmaps on unmapped nodes | |
972 | # will be ignored. On the destination, encountering an unmapped | |
973 | # alias in the incoming migration stream will result in a report, | |
974 | # and all further bitmap migration data will then be discarded. | |
975 | # Note that the destination does not know about bitmaps it does | |
976 | # not receive, so there is no limitation or requirement regarding | |
977 | # the number of bitmaps received, or how they are named, or on | |
978 | # which nodes they are placed. By default (when this parameter | |
979 | # has never been set), bitmap names are mapped to themselves. | |
980 | # Nodes are mapped to their block device name if there is one, and | |
981 | # to their node name otherwise. (Since 5.2) | |
31e4c354 | 982 | # |
4d807857 HH |
983 | # @x-vcpu-dirty-limit-period: Periodic time (in milliseconds) of dirty limit during |
984 | # live migration. Should be in the range 1 to 1000ms, | |
985 | # defaults to 1000ms. (Since 8.1) | |
986 | # | |
09f9ec99 HH |
987 | # @vcpu-dirty-limit: Dirtyrate limit (MB/s) during live migration. |
988 | # Defaults to 1. (Since 8.1) | |
989 | # | |
9fb49daa | 990 | # Features: |
a937b6aa | 991 | # |
4d807857 HH |
992 | # @unstable: Members @x-checkpoint-delay and @x-vcpu-dirty-limit-period |
993 | # are experimental. | |
9fb49daa | 994 | # |
56266c6d | 995 | # TODO: either fuse back into MigrationParameters, or make |
a937b6aa | 996 | # MigrationParameters members mandatory |
56266c6d | 997 | # |
48685a8e MA |
998 | # Since: 2.4 |
999 | ## | |
48685a8e | 1000 | { 'struct': 'MigrateSetParameters', |
ee3d96ba DDAG |
1001 | 'data': { '*announce-initial': 'size', |
1002 | '*announce-max': 'size', | |
1003 | '*announce-rounds': 'size', | |
1004 | '*announce-step': 'size', | |
ec17de0a MA |
1005 | '*compress-level': 'uint8', |
1006 | '*compress-threads': 'uint8', | |
1d58872a | 1007 | '*compress-wait-thread': 'bool', |
ec17de0a MA |
1008 | '*decompress-threads': 'uint8', |
1009 | '*throttle-trigger-threshold': 'uint8', | |
1010 | '*cpu-throttle-initial': 'uint8', | |
1011 | '*cpu-throttle-increment': 'uint8', | |
cbbf8182 | 1012 | '*cpu-throttle-tailslow': 'bool', |
48685a8e MA |
1013 | '*tls-creds': 'StrOrNull', |
1014 | '*tls-hostname': 'StrOrNull', | |
d2f1d29b | 1015 | '*tls-authz': 'StrOrNull', |
ec17de0a MA |
1016 | '*max-bandwidth': 'size', |
1017 | '*downtime-limit': 'uint64', | |
9fb49daa MA |
1018 | '*x-checkpoint-delay': { 'type': 'uint32', |
1019 | 'features': [ 'unstable' ] }, | |
4075fb1c | 1020 | '*block-incremental': 'bool', |
ec17de0a | 1021 | '*multifd-channels': 'uint8', |
7e555c6c | 1022 | '*xbzrle-cache-size': 'size', |
4cbc9c7f | 1023 | '*max-postcopy-bandwidth': 'size', |
ec17de0a | 1024 | '*max-cpu-throttle': 'uint8', |
9004db48 | 1025 | '*multifd-compression': 'MultiFDCompression', |
ec17de0a MA |
1026 | '*multifd-zlib-level': 'uint8', |
1027 | '*multifd-zstd-level': 'uint8', | |
4d807857 HH |
1028 | '*block-bitmap-mapping': [ 'BitmapMigrationNodeAlias' ], |
1029 | '*x-vcpu-dirty-limit-period': { 'type': 'uint64', | |
09f9ec99 HH |
1030 | 'features': [ 'unstable' ] }, |
1031 | '*vcpu-dirty-limit': 'uint64'} } | |
48685a8e MA |
1032 | |
1033 | ## | |
1034 | # @migrate-set-parameters: | |
1035 | # | |
1036 | # Set various migration parameters. | |
1037 | # | |
1038 | # Since: 2.4 | |
1039 | # | |
1040 | # Example: | |
1041 | # | |
1042 | # -> { "execute": "migrate-set-parameters" , | |
1043 | # "arguments": { "compress-level": 1 } } | |
37fa48a4 | 1044 | # <- { "return": {} } |
48685a8e MA |
1045 | ## |
1046 | { 'command': 'migrate-set-parameters', 'boxed': true, | |
1047 | 'data': 'MigrateSetParameters' } | |
1048 | ||
1049 | ## | |
1050 | # @MigrationParameters: | |
1051 | # | |
1052 | # The optional members aren't actually optional. | |
1053 | # | |
a937b6aa MA |
1054 | # @announce-initial: Initial delay (in milliseconds) before sending |
1055 | # the first announce (Since 4.0) | |
ee3d96ba | 1056 | # |
a937b6aa MA |
1057 | # @announce-max: Maximum delay (in milliseconds) between packets in |
1058 | # the announcement (Since 4.0) | |
ee3d96ba | 1059 | # |
a937b6aa MA |
1060 | # @announce-rounds: Number of self-announce packets sent after |
1061 | # migration (Since 4.0) | |
ee3d96ba | 1062 | # |
a937b6aa MA |
1063 | # @announce-step: Increase in delay (in milliseconds) between |
1064 | # subsequent packets in the announcement (Since 4.0) | |
ee3d96ba | 1065 | # |
48685a8e MA |
1066 | # @compress-level: compression level |
1067 | # | |
1068 | # @compress-threads: compression thread count | |
1069 | # | |
a937b6aa MA |
1070 | # @compress-wait-thread: Controls behavior when all compression |
1071 | # threads are currently busy. If true (default), wait for a free | |
1072 | # compression thread to become available; otherwise, send the page | |
1073 | # uncompressed. (Since 3.1) | |
1d58872a | 1074 | # |
48685a8e MA |
1075 | # @decompress-threads: decompression thread count |
1076 | # | |
a937b6aa MA |
1077 | # @throttle-trigger-threshold: The ratio of bytes_dirty_period and |
1078 | # bytes_xfer_period to trigger throttling. It is expressed as | |
1079 | # percentage. The default value is 50. (Since 5.0) | |
dc14a470 | 1080 | # |
48685a8e | 1081 | # @cpu-throttle-initial: Initial percentage of time guest cpus are |
a937b6aa MA |
1082 | # throttled when migration auto-converge is activated. (Since |
1083 | # 2.7) | |
48685a8e MA |
1084 | # |
1085 | # @cpu-throttle-increment: throttle percentage increase each time | |
a937b6aa MA |
1086 | # auto-converge detects that migration is not making progress. |
1087 | # (Since 2.7) | |
1088 | # | |
1089 | # @cpu-throttle-tailslow: Make CPU throttling slower at tail stage At | |
1090 | # the tail stage of throttling, the Guest is very sensitive to CPU | |
1091 | # percentage while the @cpu-throttle -increment is excessive | |
1092 | # usually at tail stage. If this parameter is true, we will | |
1093 | # compute the ideal CPU percentage used by the Guest, which may | |
1094 | # exactly make the dirty rate match the dirty rate threshold. | |
1095 | # Then we will choose a smaller throttle increment between the one | |
1096 | # specified by @cpu-throttle-increment and the one generated by | |
1097 | # ideal CPU percentage. Therefore, it is compatible to | |
1098 | # traditional throttling, meanwhile the throttle increment won't | |
1099 | # be excessive at tail stage. The default value is false. (Since | |
1100 | # 5.1) | |
cbbf8182 | 1101 | # |
48685a8e | 1102 | # @tls-creds: ID of the 'tls-creds' object that provides credentials |
a937b6aa MA |
1103 | # for establishing a TLS connection over the migration data |
1104 | # channel. On the outgoing side of the migration, the credentials | |
1105 | # must be for a 'client' endpoint, while for the incoming side the | |
1106 | # credentials must be for a 'server' endpoint. An empty string | |
1107 | # means that QEMU will use plain text mode for migration, rather | |
1108 | # than TLS (Since 2.7) Note: 2.8 reports this by omitting | |
1109 | # tls-creds instead. | |
1110 | # | |
1111 | # @tls-hostname: hostname of the target host for the migration. This | |
1112 | # is required when using x509 based TLS credentials and the | |
1113 | # migration URI does not already include a hostname. For example | |
1114 | # if using fd: or exec: based migration, the hostname must be | |
1115 | # provided so that the server's x509 certificate identity can be | |
1116 | # validated. (Since 2.7) An empty string means that QEMU will use | |
1117 | # the hostname associated with the migration URI, if any. (Since | |
1118 | # 2.9) Note: 2.8 reports this by omitting tls-hostname instead. | |
1119 | # | |
1120 | # @tls-authz: ID of the 'authz' object subclass that provides access | |
1121 | # control checking of the TLS x509 certificate distinguished name. | |
1122 | # (Since 4.0) | |
1123 | # | |
1124 | # @max-bandwidth: to set maximum speed for migration. maximum speed | |
1125 | # in bytes per second. (Since 2.8) | |
1126 | # | |
1127 | # @downtime-limit: set maximum tolerated downtime for migration. | |
1128 | # maximum downtime in milliseconds (Since 2.8) | |
1129 | # | |
1130 | # @x-checkpoint-delay: the delay time between two COLO checkpoints. | |
1131 | # (Since 2.8) | |
48685a8e MA |
1132 | # |
1133 | # @block-incremental: Affects how much storage is migrated when the | |
a937b6aa MA |
1134 | # block migration capability is enabled. When false, the entire |
1135 | # storage backing chain is migrated into a flattened image at the | |
1136 | # destination; when true, only the active qcow2 layer is migrated | |
1137 | # and the destination must already have access to the same backing | |
1138 | # chain as was used on the source. (since 2.10) | |
48685a8e | 1139 | # |
cbfd6c95 | 1140 | # @multifd-channels: Number of channels used to migrate data in |
a937b6aa MA |
1141 | # parallel. This is the same number that the number of sockets |
1142 | # used for migration. The default value is 2 (since 4.0) | |
4075fb1c | 1143 | # |
73af8dd8 | 1144 | # @xbzrle-cache-size: cache size to be used by XBZRLE migration. It |
a937b6aa MA |
1145 | # needs to be a multiple of the target page size and a power of 2 |
1146 | # (Since 2.11) | |
7e555c6c | 1147 | # |
a937b6aa MA |
1148 | # @max-postcopy-bandwidth: Background transfer bandwidth during |
1149 | # postcopy. Defaults to 0 (unlimited). In bytes per second. | |
1150 | # (Since 3.0) | |
4cbc9c7f | 1151 | # |
a937b6aa MA |
1152 | # @max-cpu-throttle: maximum cpu throttle percentage. Defaults to 99. |
1153 | # (Since 3.1) | |
4cbc9c7f | 1154 | # |
a937b6aa MA |
1155 | # @multifd-compression: Which compression method to use. Defaults to |
1156 | # none. (Since 5.0) | |
96eef042 | 1157 | # |
9004db48 | 1158 | # @multifd-zlib-level: Set the compression level to be used in live |
a937b6aa MA |
1159 | # migration, the compression level is an integer between 0 and 9, |
1160 | # where 0 means no compression, 1 means the best compression | |
1161 | # speed, and 9 means best compression ratio which will consume | |
1162 | # more CPU. Defaults to 1. (Since 5.0) | |
9004db48 | 1163 | # |
6a9ad154 | 1164 | # @multifd-zstd-level: Set the compression level to be used in live |
a937b6aa MA |
1165 | # migration, the compression level is an integer between 0 and 20, |
1166 | # where 0 means no compression, 1 means the best compression | |
1167 | # speed, and 20 means best compression ratio which will consume | |
1168 | # more CPU. Defaults to 1. (Since 5.0) | |
6a9ad154 | 1169 | # |
31e4c354 | 1170 | # @block-bitmap-mapping: Maps block nodes and bitmaps on them to |
a937b6aa MA |
1171 | # aliases for the purpose of dirty bitmap migration. Such aliases |
1172 | # may for example be the corresponding names on the opposite site. | |
1173 | # The mapping must be one-to-one, but not necessarily complete: On | |
1174 | # the source, unmapped bitmaps and all bitmaps on unmapped nodes | |
1175 | # will be ignored. On the destination, encountering an unmapped | |
1176 | # alias in the incoming migration stream will result in a report, | |
1177 | # and all further bitmap migration data will then be discarded. | |
1178 | # Note that the destination does not know about bitmaps it does | |
1179 | # not receive, so there is no limitation or requirement regarding | |
1180 | # the number of bitmaps received, or how they are named, or on | |
1181 | # which nodes they are placed. By default (when this parameter | |
1182 | # has never been set), bitmap names are mapped to themselves. | |
1183 | # Nodes are mapped to their block device name if there is one, and | |
1184 | # to their node name otherwise. (Since 5.2) | |
31e4c354 | 1185 | # |
4d807857 HH |
1186 | # @x-vcpu-dirty-limit-period: Periodic time (in milliseconds) of dirty limit during |
1187 | # live migration. Should be in the range 1 to 1000ms, | |
1188 | # defaults to 1000ms. (Since 8.1) | |
1189 | # | |
09f9ec99 HH |
1190 | # @vcpu-dirty-limit: Dirtyrate limit (MB/s) during live migration. |
1191 | # Defaults to 1. (Since 8.1) | |
1192 | # | |
9fb49daa | 1193 | # Features: |
a937b6aa | 1194 | # |
4d807857 HH |
1195 | # @unstable: Members @x-checkpoint-delay and @x-vcpu-dirty-limit-period |
1196 | # are experimental. | |
9fb49daa | 1197 | # |
48685a8e MA |
1198 | # Since: 2.4 |
1199 | ## | |
1200 | { 'struct': 'MigrationParameters', | |
ee3d96ba DDAG |
1201 | 'data': { '*announce-initial': 'size', |
1202 | '*announce-max': 'size', | |
1203 | '*announce-rounds': 'size', | |
1204 | '*announce-step': 'size', | |
1205 | '*compress-level': 'uint8', | |
741d4086 | 1206 | '*compress-threads': 'uint8', |
1d58872a | 1207 | '*compress-wait-thread': 'bool', |
741d4086 | 1208 | '*decompress-threads': 'uint8', |
dc14a470 | 1209 | '*throttle-trigger-threshold': 'uint8', |
741d4086 JQ |
1210 | '*cpu-throttle-initial': 'uint8', |
1211 | '*cpu-throttle-increment': 'uint8', | |
cbbf8182 | 1212 | '*cpu-throttle-tailslow': 'bool', |
48685a8e MA |
1213 | '*tls-creds': 'str', |
1214 | '*tls-hostname': 'str', | |
d2f1d29b | 1215 | '*tls-authz': 'str', |
741d4086 JQ |
1216 | '*max-bandwidth': 'size', |
1217 | '*downtime-limit': 'uint64', | |
9fb49daa MA |
1218 | '*x-checkpoint-delay': { 'type': 'uint32', |
1219 | 'features': [ 'unstable' ] }, | |
ec17de0a | 1220 | '*block-incremental': 'bool', |
cbfd6c95 | 1221 | '*multifd-channels': 'uint8', |
7e555c6c | 1222 | '*xbzrle-cache-size': 'size', |
dbb28bc8 | 1223 | '*max-postcopy-bandwidth': 'size', |
96eef042 | 1224 | '*max-cpu-throttle': 'uint8', |
9004db48 | 1225 | '*multifd-compression': 'MultiFDCompression', |
6a9ad154 | 1226 | '*multifd-zlib-level': 'uint8', |
31e4c354 | 1227 | '*multifd-zstd-level': 'uint8', |
4d807857 HH |
1228 | '*block-bitmap-mapping': [ 'BitmapMigrationNodeAlias' ], |
1229 | '*x-vcpu-dirty-limit-period': { 'type': 'uint64', | |
09f9ec99 HH |
1230 | 'features': [ 'unstable' ] }, |
1231 | '*vcpu-dirty-limit': 'uint64'} } | |
48685a8e MA |
1232 | |
1233 | ## | |
1234 | # @query-migrate-parameters: | |
1235 | # | |
1236 | # Returns information about the current migration parameters | |
1237 | # | |
1238 | # Returns: @MigrationParameters | |
1239 | # | |
1240 | # Since: 2.4 | |
1241 | # | |
1242 | # Example: | |
1243 | # | |
1244 | # -> { "execute": "query-migrate-parameters" } | |
1245 | # <- { "return": { | |
1246 | # "decompress-threads": 2, | |
1247 | # "cpu-throttle-increment": 10, | |
1248 | # "compress-threads": 8, | |
1249 | # "compress-level": 1, | |
1250 | # "cpu-throttle-initial": 20, | |
1251 | # "max-bandwidth": 33554432, | |
1252 | # "downtime-limit": 300 | |
1253 | # } | |
1254 | # } | |
48685a8e MA |
1255 | ## |
1256 | { 'command': 'query-migrate-parameters', | |
1257 | 'returns': 'MigrationParameters' } | |
1258 | ||
48685a8e MA |
1259 | ## |
1260 | # @migrate-start-postcopy: | |
1261 | # | |
a937b6aa MA |
1262 | # Followup to a migration command to switch the migration to postcopy |
1263 | # mode. The postcopy-ram capability must be set on both source and | |
1264 | # destination before the original migration command. | |
48685a8e MA |
1265 | # |
1266 | # Since: 2.5 | |
1267 | # | |
1268 | # Example: | |
1269 | # | |
1270 | # -> { "execute": "migrate-start-postcopy" } | |
1271 | # <- { "return": {} } | |
48685a8e MA |
1272 | ## |
1273 | { 'command': 'migrate-start-postcopy' } | |
1274 | ||
1275 | ## | |
1276 | # @MIGRATION: | |
1277 | # | |
1278 | # Emitted when a migration event happens | |
1279 | # | |
1280 | # @status: @MigrationStatus describing the current migration status. | |
1281 | # | |
1282 | # Since: 2.4 | |
1283 | # | |
1284 | # Example: | |
1285 | # | |
1286 | # <- {"timestamp": {"seconds": 1432121972, "microseconds": 744001}, | |
1287 | # "event": "MIGRATION", | |
1288 | # "data": {"status": "completed"} } | |
48685a8e MA |
1289 | ## |
1290 | { 'event': 'MIGRATION', | |
1291 | 'data': {'status': 'MigrationStatus'}} | |
1292 | ||
1293 | ## | |
1294 | # @MIGRATION_PASS: | |
1295 | # | |
a937b6aa MA |
1296 | # Emitted from the source side of a migration at the start of each |
1297 | # pass (when it syncs the dirty bitmap) | |
48685a8e MA |
1298 | # |
1299 | # @pass: An incrementing count (starting at 1 on the first pass) | |
1300 | # | |
1301 | # Since: 2.6 | |
1302 | # | |
1303 | # Example: | |
1304 | # | |
37fa48a4 MA |
1305 | # <- { "timestamp": {"seconds": 1449669631, "microseconds": 239225}, |
1306 | # "event": "MIGRATION_PASS", "data": {"pass": 2} } | |
48685a8e MA |
1307 | ## |
1308 | { 'event': 'MIGRATION_PASS', | |
1309 | 'data': { 'pass': 'int' } } | |
1310 | ||
1311 | ## | |
1312 | # @COLOMessage: | |
1313 | # | |
1314 | # The message transmission between Primary side and Secondary side. | |
1315 | # | |
1316 | # @checkpoint-ready: Secondary VM (SVM) is ready for checkpointing | |
1317 | # | |
a937b6aa MA |
1318 | # @checkpoint-request: Primary VM (PVM) tells SVM to prepare for |
1319 | # checkpointing | |
48685a8e MA |
1320 | # |
1321 | # @checkpoint-reply: SVM gets PVM's checkpoint request | |
1322 | # | |
1323 | # @vmstate-send: VM's state will be sent by PVM. | |
1324 | # | |
1325 | # @vmstate-size: The total size of VMstate. | |
1326 | # | |
1327 | # @vmstate-received: VM's state has been received by SVM. | |
1328 | # | |
1329 | # @vmstate-loaded: VM's state has been loaded by SVM. | |
1330 | # | |
1331 | # Since: 2.8 | |
1332 | ## | |
1333 | { 'enum': 'COLOMessage', | |
1334 | 'data': [ 'checkpoint-ready', 'checkpoint-request', 'checkpoint-reply', | |
1335 | 'vmstate-send', 'vmstate-size', 'vmstate-received', | |
1336 | 'vmstate-loaded' ] } | |
1337 | ||
1338 | ## | |
1339 | # @COLOMode: | |
1340 | # | |
41b6b779 | 1341 | # The COLO current mode. |
48685a8e | 1342 | # |
41b6b779 | 1343 | # @none: COLO is disabled. |
48685a8e | 1344 | # |
41b6b779 | 1345 | # @primary: COLO node in primary side. |
48685a8e | 1346 | # |
41b6b779 | 1347 | # @secondary: COLO node in slave side. |
48685a8e MA |
1348 | # |
1349 | # Since: 2.8 | |
1350 | ## | |
1351 | { 'enum': 'COLOMode', | |
41b6b779 | 1352 | 'data': [ 'none', 'primary', 'secondary'] } |
48685a8e MA |
1353 | |
1354 | ## | |
1355 | # @FailoverStatus: | |
1356 | # | |
1357 | # An enumeration of COLO failover status | |
1358 | # | |
1359 | # @none: no failover has ever happened | |
1360 | # | |
1361 | # @require: got failover requirement but not handled | |
1362 | # | |
1363 | # @active: in the process of doing failover | |
1364 | # | |
1365 | # @completed: finish the process of failover | |
1366 | # | |
a937b6aa MA |
1367 | # @relaunch: restart the failover process, from 'none' -> 'completed' |
1368 | # (Since 2.9) | |
48685a8e MA |
1369 | # |
1370 | # Since: 2.8 | |
1371 | ## | |
1372 | { 'enum': 'FailoverStatus', | |
1373 | 'data': [ 'none', 'require', 'active', 'completed', 'relaunch' ] } | |
1374 | ||
9ecff6d6 HZ |
1375 | ## |
1376 | # @COLO_EXIT: | |
1377 | # | |
1378 | # Emitted when VM finishes COLO mode due to some errors happening or | |
1379 | # at the request of users. | |
1380 | # | |
1381 | # @mode: report COLO mode when COLO exited. | |
1382 | # | |
1383 | # @reason: describes the reason for the COLO exit. | |
1384 | # | |
1385 | # Since: 3.1 | |
1386 | # | |
1387 | # Example: | |
1388 | # | |
1389 | # <- { "timestamp": {"seconds": 2032141960, "microseconds": 417172}, | |
1390 | # "event": "COLO_EXIT", "data": {"mode": "primary", "reason": "request" } } | |
9ecff6d6 HZ |
1391 | ## |
1392 | { 'event': 'COLO_EXIT', | |
1393 | 'data': {'mode': 'COLOMode', 'reason': 'COLOExitReason' } } | |
1394 | ||
1395 | ## | |
1396 | # @COLOExitReason: | |
1397 | # | |
3a43ac47 | 1398 | # The reason for a COLO exit. |
9ecff6d6 | 1399 | # |
a937b6aa MA |
1400 | # @none: failover has never happened. This state does not occur in |
1401 | # the COLO_EXIT event, and is only visible in the result of | |
1402 | # query-colo-status. | |
9ecff6d6 | 1403 | # |
3a43ac47 | 1404 | # @request: COLO exit is due to an external request. |
9ecff6d6 | 1405 | # |
3a43ac47 ZC |
1406 | # @error: COLO exit is due to an internal error. |
1407 | # | |
1408 | # @processing: COLO is currently handling a failover (since 4.0). | |
9ecff6d6 HZ |
1409 | # |
1410 | # Since: 3.1 | |
1411 | ## | |
1412 | { 'enum': 'COLOExitReason', | |
3a43ac47 | 1413 | 'data': [ 'none', 'request', 'error' , 'processing' ] } |
9ecff6d6 | 1414 | |
48685a8e MA |
1415 | ## |
1416 | # @x-colo-lost-heartbeat: | |
1417 | # | |
a937b6aa MA |
1418 | # Tell qemu that heartbeat is lost, request it to do takeover |
1419 | # procedures. If this command is sent to the PVM, the Primary side | |
1420 | # will exit COLO mode. If sent to the Secondary, the Secondary side | |
1421 | # will run failover work, then takes over server operation to become | |
1422 | # the service VM. | |
48685a8e | 1423 | # |
9fb49daa | 1424 | # Features: |
a937b6aa | 1425 | # |
9fb49daa MA |
1426 | # @unstable: This command is experimental. |
1427 | # | |
48685a8e MA |
1428 | # Since: 2.8 |
1429 | # | |
1430 | # Example: | |
1431 | # | |
1432 | # -> { "execute": "x-colo-lost-heartbeat" } | |
1433 | # <- { "return": {} } | |
48685a8e | 1434 | ## |
9fb49daa | 1435 | { 'command': 'x-colo-lost-heartbeat', |
51e47cf8 VSO |
1436 | 'features': [ 'unstable' ], |
1437 | 'if': 'CONFIG_REPLICATION' } | |
48685a8e MA |
1438 | |
1439 | ## | |
1440 | # @migrate_cancel: | |
1441 | # | |
1442 | # Cancel the current executing migration process. | |
1443 | # | |
1444 | # Returns: nothing on success | |
1445 | # | |
a937b6aa MA |
1446 | # Notes: This command succeeds even if there is no migration process |
1447 | # running. | |
48685a8e | 1448 | # |
9bc6e893 | 1449 | # Since: 0.14 |
48685a8e MA |
1450 | # |
1451 | # Example: | |
1452 | # | |
1453 | # -> { "execute": "migrate_cancel" } | |
1454 | # <- { "return": {} } | |
48685a8e MA |
1455 | ## |
1456 | { 'command': 'migrate_cancel' } | |
1457 | ||
89cfc02c DDAG |
1458 | ## |
1459 | # @migrate-continue: | |
1460 | # | |
1461 | # Continue migration when it's in a paused state. | |
1462 | # | |
1463 | # @state: The state the migration is currently expected to be in | |
1464 | # | |
1465 | # Returns: nothing on success | |
4ae65a52 | 1466 | # |
89cfc02c | 1467 | # Since: 2.11 |
4ae65a52 | 1468 | # |
89cfc02c DDAG |
1469 | # Example: |
1470 | # | |
1471 | # -> { "execute": "migrate-continue" , "arguments": | |
1472 | # { "state": "pre-switchover" } } | |
1473 | # <- { "return": {} } | |
1474 | ## | |
1475 | { 'command': 'migrate-continue', 'data': {'state': 'MigrationStatus'} } | |
1476 | ||
48685a8e MA |
1477 | ## |
1478 | # @migrate: | |
1479 | # | |
1480 | # Migrates the current running guest to another Virtual Machine. | |
1481 | # | |
1482 | # @uri: the Uniform Resource Identifier of the destination VM | |
1483 | # | |
1484 | # @blk: do block migration (full disk copy) | |
1485 | # | |
1486 | # @inc: incremental disk copy migration | |
1487 | # | |
a937b6aa MA |
1488 | # @detach: this argument exists only for compatibility reasons and is |
1489 | # ignored by QEMU | |
48685a8e | 1490 | # |
51f63ec7 | 1491 | # @resume: resume one paused migration, default "off". (since 3.0) |
7a4da28b | 1492 | # |
48685a8e MA |
1493 | # Returns: nothing on success |
1494 | # | |
9bc6e893 | 1495 | # Since: 0.14 |
48685a8e MA |
1496 | # |
1497 | # Notes: | |
1498 | # | |
a937b6aa MA |
1499 | # 1. The 'query-migrate' command should be used to check migration's |
1500 | # progress and final result (this information is provided by the | |
1501 | # 'status' member) | |
48685a8e MA |
1502 | # |
1503 | # 2. All boolean arguments default to false | |
1504 | # | |
a937b6aa MA |
1505 | # 3. The user Monitor's "detach" argument is invalid in QMP and should |
1506 | # not be used | |
48685a8e MA |
1507 | # |
1508 | # Example: | |
1509 | # | |
1510 | # -> { "execute": "migrate", "arguments": { "uri": "tcp:0:4446" } } | |
1511 | # <- { "return": {} } | |
48685a8e MA |
1512 | ## |
1513 | { 'command': 'migrate', | |
7a4da28b PX |
1514 | 'data': {'uri': 'str', '*blk': 'bool', '*inc': 'bool', |
1515 | '*detach': 'bool', '*resume': 'bool' } } | |
48685a8e MA |
1516 | |
1517 | ## | |
1518 | # @migrate-incoming: | |
1519 | # | |
a937b6aa MA |
1520 | # Start an incoming migration, the qemu must have been started with |
1521 | # -incoming defer | |
48685a8e MA |
1522 | # |
1523 | # @uri: The Uniform Resource Identifier identifying the source or | |
a937b6aa | 1524 | # address to listen on |
48685a8e MA |
1525 | # |
1526 | # Returns: nothing on success | |
1527 | # | |
1528 | # Since: 2.3 | |
1529 | # | |
1530 | # Notes: | |
1531 | # | |
a937b6aa MA |
1532 | # 1. It's a bad idea to use a string for the uri, but it needs |
1533 | # to stay compatible with -incoming and the format of the uri | |
1534 | # is already exposed above libvirt. | |
48685a8e | 1535 | # |
a937b6aa MA |
1536 | # 2. QEMU must be started with -incoming defer to allow |
1537 | # migrate-incoming to be used. | |
48685a8e MA |
1538 | # |
1539 | # 3. The uri format is the same as for -incoming | |
1540 | # | |
1541 | # Example: | |
1542 | # | |
1543 | # -> { "execute": "migrate-incoming", | |
1544 | # "arguments": { "uri": "tcp::4446" } } | |
1545 | # <- { "return": {} } | |
48685a8e MA |
1546 | ## |
1547 | { 'command': 'migrate-incoming', 'data': {'uri': 'str' } } | |
1548 | ||
1549 | ## | |
1550 | # @xen-save-devices-state: | |
1551 | # | |
a937b6aa MA |
1552 | # Save the state of all devices to file. The RAM and the block |
1553 | # devices of the VM are not saved by this command. | |
48685a8e MA |
1554 | # |
1555 | # @filename: the file to save the state of the devices to as binary | |
a937b6aa MA |
1556 | # data. See xen-save-devices-state.txt for a description of the |
1557 | # binary format. | |
48685a8e | 1558 | # |
a937b6aa MA |
1559 | # @live: Optional argument to ask QEMU to treat this command as part |
1560 | # of a live migration. Default to true. (since 2.11) | |
5d6c599f | 1561 | # |
48685a8e MA |
1562 | # Returns: Nothing on success |
1563 | # | |
1564 | # Since: 1.1 | |
1565 | # | |
1566 | # Example: | |
1567 | # | |
1568 | # -> { "execute": "xen-save-devices-state", | |
1569 | # "arguments": { "filename": "/tmp/save" } } | |
1570 | # <- { "return": {} } | |
48685a8e | 1571 | ## |
5d6c599f AP |
1572 | { 'command': 'xen-save-devices-state', |
1573 | 'data': {'filename': 'str', '*live':'bool' } } | |
48685a8e | 1574 | |
28af9ba2 PMD |
1575 | ## |
1576 | # @xen-set-global-dirty-log: | |
1577 | # | |
1578 | # Enable or disable the global dirty log mode. | |
1579 | # | |
1580 | # @enable: true to enable, false to disable. | |
1581 | # | |
1582 | # Returns: nothing | |
1583 | # | |
1584 | # Since: 1.3 | |
1585 | # | |
1586 | # Example: | |
1587 | # | |
1588 | # -> { "execute": "xen-set-global-dirty-log", | |
1589 | # "arguments": { "enable": true } } | |
1590 | # <- { "return": {} } | |
28af9ba2 PMD |
1591 | ## |
1592 | { 'command': 'xen-set-global-dirty-log', 'data': { 'enable': 'bool' } } | |
1593 | ||
1594 | ## | |
1595 | # @xen-load-devices-state: | |
1596 | # | |
a937b6aa MA |
1597 | # Load the state of all devices from file. The RAM and the block |
1598 | # devices of the VM are not loaded by this command. | |
28af9ba2 PMD |
1599 | # |
1600 | # @filename: the file to load the state of the devices from as binary | |
a937b6aa MA |
1601 | # data. See xen-save-devices-state.txt for a description of the |
1602 | # binary format. | |
28af9ba2 PMD |
1603 | # |
1604 | # Since: 2.7 | |
1605 | # | |
1606 | # Example: | |
1607 | # | |
1608 | # -> { "execute": "xen-load-devices-state", | |
1609 | # "arguments": { "filename": "/tmp/resume" } } | |
1610 | # <- { "return": {} } | |
28af9ba2 PMD |
1611 | ## |
1612 | { 'command': 'xen-load-devices-state', 'data': {'filename': 'str'} } | |
1613 | ||
48685a8e MA |
1614 | ## |
1615 | # @xen-set-replication: | |
1616 | # | |
1617 | # Enable or disable replication. | |
1618 | # | |
1619 | # @enable: true to enable, false to disable. | |
1620 | # | |
1621 | # @primary: true for primary or false for secondary. | |
1622 | # | |
a937b6aa MA |
1623 | # @failover: true to do failover, false to stop. but cannot be |
1624 | # specified if 'enable' is true. default value is false. | |
48685a8e MA |
1625 | # |
1626 | # Returns: nothing. | |
1627 | # | |
1628 | # Example: | |
1629 | # | |
1630 | # -> { "execute": "xen-set-replication", | |
1631 | # "arguments": {"enable": true, "primary": false} } | |
1632 | # <- { "return": {} } | |
1633 | # | |
1634 | # Since: 2.9 | |
1635 | ## | |
1636 | { 'command': 'xen-set-replication', | |
fd658a7b | 1637 | 'data': { 'enable': 'bool', 'primary': 'bool', '*failover': 'bool' }, |
8a9f1e1d | 1638 | 'if': 'CONFIG_REPLICATION' } |
48685a8e MA |
1639 | |
1640 | ## | |
1641 | # @ReplicationStatus: | |
1642 | # | |
1643 | # The result format for 'query-xen-replication-status'. | |
1644 | # | |
1645 | # @error: true if an error happened, false if replication is normal. | |
1646 | # | |
a937b6aa MA |
1647 | # @desc: the human readable error description string, when @error is |
1648 | # 'true'. | |
48685a8e MA |
1649 | # |
1650 | # Since: 2.9 | |
1651 | ## | |
1652 | { 'struct': 'ReplicationStatus', | |
335d10cd | 1653 | 'data': { 'error': 'bool', '*desc': 'str' }, |
8a9f1e1d | 1654 | 'if': 'CONFIG_REPLICATION' } |
48685a8e MA |
1655 | |
1656 | ## | |
1657 | # @query-xen-replication-status: | |
1658 | # | |
1659 | # Query replication status while the vm is running. | |
1660 | # | |
f4347129 | 1661 | # Returns: A @ReplicationStatus object showing the status. |
48685a8e MA |
1662 | # |
1663 | # Example: | |
1664 | # | |
1665 | # -> { "execute": "query-xen-replication-status" } | |
1666 | # <- { "return": { "error": false } } | |
1667 | # | |
1668 | # Since: 2.9 | |
1669 | ## | |
1670 | { 'command': 'query-xen-replication-status', | |
335d10cd | 1671 | 'returns': 'ReplicationStatus', |
8a9f1e1d | 1672 | 'if': 'CONFIG_REPLICATION' } |
48685a8e MA |
1673 | |
1674 | ## | |
1675 | # @xen-colo-do-checkpoint: | |
1676 | # | |
1677 | # Xen uses this command to notify replication to trigger a checkpoint. | |
1678 | # | |
1679 | # Returns: nothing. | |
1680 | # | |
1681 | # Example: | |
1682 | # | |
1683 | # -> { "execute": "xen-colo-do-checkpoint" } | |
1684 | # <- { "return": {} } | |
1685 | # | |
1686 | # Since: 2.9 | |
1687 | ## | |
335d10cd | 1688 | { 'command': 'xen-colo-do-checkpoint', |
8a9f1e1d | 1689 | 'if': 'CONFIG_REPLICATION' } |
02affd41 | 1690 | |
f56c0065 ZC |
1691 | ## |
1692 | # @COLOStatus: | |
1693 | # | |
1694 | # The result format for 'query-colo-status'. | |
1695 | # | |
a937b6aa MA |
1696 | # @mode: COLO running mode. If COLO is running, this field will |
1697 | # return 'primary' or 'secondary'. | |
f56c0065 | 1698 | # |
a937b6aa MA |
1699 | # @last-mode: COLO last running mode. If COLO is running, this field |
1700 | # will return same like mode field, after failover we can use this | |
1701 | # field to get last colo mode. (since 4.0) | |
5ed0deca | 1702 | # |
f56c0065 ZC |
1703 | # @reason: describes the reason for the COLO exit. |
1704 | # | |
ea3b23e5 | 1705 | # Since: 3.1 |
f56c0065 ZC |
1706 | ## |
1707 | { 'struct': 'COLOStatus', | |
5cc8f9eb | 1708 | 'data': { 'mode': 'COLOMode', 'last-mode': 'COLOMode', |
51e47cf8 VSO |
1709 | 'reason': 'COLOExitReason' }, |
1710 | 'if': 'CONFIG_REPLICATION' } | |
f56c0065 ZC |
1711 | |
1712 | ## | |
1713 | # @query-colo-status: | |
1714 | # | |
1715 | # Query COLO status while the vm is running. | |
1716 | # | |
1717 | # Returns: A @COLOStatus object showing the status. | |
1718 | # | |
1719 | # Example: | |
1720 | # | |
1721 | # -> { "execute": "query-colo-status" } | |
51ec294d | 1722 | # <- { "return": { "mode": "primary", "last-mode": "none", "reason": "request" } } |
f56c0065 | 1723 | # |
ea3b23e5 | 1724 | # Since: 3.1 |
f56c0065 ZC |
1725 | ## |
1726 | { 'command': 'query-colo-status', | |
51e47cf8 VSO |
1727 | 'returns': 'COLOStatus', |
1728 | 'if': 'CONFIG_REPLICATION' } | |
f56c0065 | 1729 | |
02affd41 PX |
1730 | ## |
1731 | # @migrate-recover: | |
1732 | # | |
1733 | # Provide a recovery migration stream URI. | |
1734 | # | |
1735 | # @uri: the URI to be used for the recovery of migration stream. | |
1736 | # | |
1737 | # Returns: nothing. | |
1738 | # | |
1739 | # Example: | |
1740 | # | |
1741 | # -> { "execute": "migrate-recover", | |
1742 | # "arguments": { "uri": "tcp:192.168.1.200:12345" } } | |
1743 | # <- { "return": {} } | |
1744 | # | |
51f63ec7 | 1745 | # Since: 3.0 |
02affd41 | 1746 | ## |
b0ddeba2 MAL |
1747 | { 'command': 'migrate-recover', |
1748 | 'data': { 'uri': 'str' }, | |
02affd41 | 1749 | 'allow-oob': true } |
bfbf89c2 PX |
1750 | |
1751 | ## | |
1752 | # @migrate-pause: | |
1753 | # | |
1754 | # Pause a migration. Currently it only supports postcopy. | |
1755 | # | |
1756 | # Returns: nothing. | |
1757 | # | |
1758 | # Example: | |
1759 | # | |
1760 | # -> { "execute": "migrate-pause" } | |
1761 | # <- { "return": {} } | |
1762 | # | |
51f63ec7 | 1763 | # Since: 3.0 |
bfbf89c2 PX |
1764 | ## |
1765 | { 'command': 'migrate-pause', 'allow-oob': true } | |
d328e6f3 JF |
1766 | |
1767 | ## | |
1768 | # @UNPLUG_PRIMARY: | |
1769 | # | |
1770 | # Emitted from source side of a migration when migration state is | |
a937b6aa MA |
1771 | # WAIT_UNPLUG. Device was unplugged by guest operating system. Device |
1772 | # resources in QEMU are kept on standby to be able to re-plug it in | |
1773 | # case of migration failure. | |
d328e6f3 JF |
1774 | # |
1775 | # @device-id: QEMU device id of the unplugged device | |
1776 | # | |
1777 | # Since: 4.2 | |
1778 | # | |
1779 | # Example: | |
4ae65a52 | 1780 | # |
0df5e9a3 VT |
1781 | # <- { "event": "UNPLUG_PRIMARY", |
1782 | # "data": { "device-id": "hostdev0" }, | |
1783 | # "timestamp": { "seconds": 1265044230, "microseconds": 450486 } } | |
d328e6f3 JF |
1784 | ## |
1785 | { 'event': 'UNPLUG_PRIMARY', | |
1786 | 'data': { 'device-id': 'str' } } | |
7df3aa30 | 1787 | |
71864ead HH |
1788 | ## |
1789 | # @DirtyRateVcpu: | |
1790 | # | |
1791 | # Dirty rate of vcpu. | |
1792 | # | |
1793 | # @id: vcpu index. | |
1794 | # | |
1795 | # @dirty-rate: dirty rate. | |
1796 | # | |
f78d4ed7 | 1797 | # Since: 6.2 |
71864ead HH |
1798 | ## |
1799 | { 'struct': 'DirtyRateVcpu', | |
1800 | 'data': { 'id': 'int', 'dirty-rate': 'int64' } } | |
1801 | ||
7df3aa30 CZ |
1802 | ## |
1803 | # @DirtyRateStatus: | |
1804 | # | |
5034e3d4 | 1805 | # Dirty page rate measurement status. |
7df3aa30 | 1806 | # |
5034e3d4 | 1807 | # @unstarted: measuring thread has not been started yet |
7df3aa30 | 1808 | # |
5034e3d4 | 1809 | # @measuring: measuring thread is running |
7df3aa30 | 1810 | # |
5034e3d4 | 1811 | # @measured: dirty page rate is measured and the results are available |
7df3aa30 CZ |
1812 | # |
1813 | # Since: 5.2 | |
7df3aa30 CZ |
1814 | ## |
1815 | { 'enum': 'DirtyRateStatus', | |
1816 | 'data': [ 'unstarted', 'measuring', 'measured'] } | |
4c437254 | 1817 | |
71864ead HH |
1818 | ## |
1819 | # @DirtyRateMeasureMode: | |
1820 | # | |
5034e3d4 AG |
1821 | # Method used to measure dirty page rate. Differences between |
1822 | # available methods are explained in @calc-dirty-rate. | |
71864ead | 1823 | # |
5034e3d4 | 1824 | # @page-sampling: use page sampling |
71864ead | 1825 | # |
5034e3d4 | 1826 | # @dirty-ring: use dirty ring |
826b8bc8 | 1827 | # |
5034e3d4 | 1828 | # @dirty-bitmap: use dirty bitmap |
71864ead | 1829 | # |
f78d4ed7 | 1830 | # Since: 6.2 |
71864ead HH |
1831 | ## |
1832 | { 'enum': 'DirtyRateMeasureMode', | |
826b8bc8 | 1833 | 'data': ['page-sampling', 'dirty-ring', 'dirty-bitmap'] } |
71864ead | 1834 | |
4c437254 CZ |
1835 | ## |
1836 | # @DirtyRateInfo: | |
1837 | # | |
5034e3d4 | 1838 | # Information about measured dirty page rate. |
4c437254 | 1839 | # |
a937b6aa | 1840 | # @dirty-rate: an estimate of the dirty page rate of the VM in units |
5034e3d4 | 1841 | # of MiB/s. Value is present only when @status is 'measured'. |
4c437254 | 1842 | # |
5034e3d4 | 1843 | # @status: current status of dirty page rate measurements |
4c437254 CZ |
1844 | # |
1845 | # @start-time: start time in units of second for calculation | |
1846 | # | |
5034e3d4 AG |
1847 | # @calc-time: time period for which dirty page rate was measured |
1848 | # (in seconds) | |
4c437254 | 1849 | # |
5034e3d4 AG |
1850 | # @sample-pages: number of sampled pages per GiB of guest memory. |
1851 | # Valid only in page-sampling mode (Since 6.1) | |
7afa08cd | 1852 | # |
5034e3d4 | 1853 | # @mode: mode that was used to measure dirty page rate (Since 6.2) |
0e21bf24 | 1854 | # |
5034e3d4 | 1855 | # @vcpu-dirty-rate: dirty rate for each vCPU if dirty-ring mode was |
a937b6aa | 1856 | # specified (Since 6.2) |
0e21bf24 | 1857 | # |
4c437254 | 1858 | # Since: 5.2 |
4c437254 CZ |
1859 | ## |
1860 | { 'struct': 'DirtyRateInfo', | |
b1a859cf | 1861 | 'data': {'*dirty-rate': 'int64', |
4c437254 CZ |
1862 | 'status': 'DirtyRateStatus', |
1863 | 'start-time': 'int64', | |
7afa08cd | 1864 | 'calc-time': 'int64', |
0e21bf24 HH |
1865 | 'sample-pages': 'uint64', |
1866 | 'mode': 'DirtyRateMeasureMode', | |
1867 | '*vcpu-dirty-rate': [ 'DirtyRateVcpu' ] } } | |
4c437254 CZ |
1868 | |
1869 | ## | |
1870 | # @calc-dirty-rate: | |
1871 | # | |
5034e3d4 AG |
1872 | # Start measuring dirty page rate of the VM. Results can be retrieved |
1873 | # with @query-dirty-rate after measurements are completed. | |
1874 | # | |
1875 | # Dirty page rate is the number of pages changed in a given time | |
1876 | # period expressed in MiB/s. The following methods of calculation are | |
1877 | # available: | |
1878 | # | |
1879 | # 1. In page sampling mode, a random subset of pages are selected and | |
1880 | # hashed twice: once at the beginning of measurement time period, | |
1881 | # and once again at the end. If two hashes for some page are | |
1882 | # different, the page is counted as changed. Since this method | |
1883 | # relies on sampling and hashing, calculated dirty page rate is | |
1884 | # only an estimate of its true value. Increasing @sample-pages | |
1885 | # improves estimation quality at the cost of higher computational | |
1886 | # overhead. | |
1887 | # | |
1888 | # 2. Dirty bitmap mode captures writes to memory (for example by | |
1889 | # temporarily revoking write access to all pages) and counting page | |
1890 | # faults. Information about modified pages is collected into a | |
1891 | # bitmap, where each bit corresponds to one guest page. This mode | |
1892 | # requires that KVM accelerator property "dirty-ring-size" is *not* | |
1893 | # set. | |
1894 | # | |
1895 | # 3. Dirty ring mode is similar to dirty bitmap mode, but the | |
1896 | # information about modified pages is collected into ring buffer. | |
1897 | # This mode tracks page modification per each vCPU separately. It | |
1898 | # requires that KVM accelerator property "dirty-ring-size" is set. | |
1899 | # | |
1900 | # @calc-time: time period in units of second for which dirty page rate | |
1901 | # is calculated. Note that larger @calc-time values will | |
1902 | # typically result in smaller dirty page rates because page | |
1903 | # dirtying is a one-time event. Once some page is counted as | |
1904 | # dirty during @calc-time period, further writes to this page will | |
1905 | # not increase dirty page rate anymore. | |
1906 | # | |
1907 | # @sample-pages: number of sampled pages per each GiB of guest memory. | |
1908 | # Default value is 512. For 4KiB guest pages this corresponds to | |
1909 | # sampling ratio of 0.2%. This argument is used only in page | |
1910 | # sampling mode. (Since 6.1) | |
1911 | # | |
1912 | # @mode: mechanism for tracking dirty pages. Default value is | |
1913 | # 'page-sampling'. Others are 'dirty-bitmap' and 'dirty-ring'. | |
1914 | # (Since 6.1) | |
0e21bf24 | 1915 | # |
4c437254 CZ |
1916 | # Since: 5.2 |
1917 | # | |
1918 | # Example: | |
4ae65a52 | 1919 | # |
37fa48a4 MA |
1920 | # -> {"execute": "calc-dirty-rate", "arguments": {"calc-time": 1, |
1921 | # 'sample-pages': 512} } | |
1922 | # <- { "return": {} } | |
4c437254 | 1923 | ## |
7afa08cd | 1924 | { 'command': 'calc-dirty-rate', 'data': {'calc-time': 'int64', |
0e21bf24 HH |
1925 | '*sample-pages': 'int', |
1926 | '*mode': 'DirtyRateMeasureMode'} } | |
4c437254 CZ |
1927 | |
1928 | ## | |
1929 | # @query-dirty-rate: | |
1930 | # | |
5034e3d4 | 1931 | # Query results of the most recent invocation of @calc-dirty-rate. |
4c437254 CZ |
1932 | # |
1933 | # Since: 5.2 | |
5034e3d4 AG |
1934 | # |
1935 | # Examples: | |
1936 | # | |
1937 | # 1. Measurement is in progress: | |
1938 | # | |
1939 | # <- {"status": "measuring", "sample-pages": 512, | |
1940 | # "mode": "page-sampling", "start-time": 3665220, "calc-time": 10} | |
1941 | # | |
1942 | # 2. Measurement has been completed: | |
1943 | # | |
1944 | # <- {"status": "measured", "sample-pages": 512, "dirty-rate": 108, | |
1945 | # "mode": "page-sampling", "start-time": 3665220, "calc-time": 10} | |
4c437254 CZ |
1946 | ## |
1947 | { 'command': 'query-dirty-rate', 'returns': 'DirtyRateInfo' } | |
0f0d83a4 | 1948 | |
f3b2e38c HH |
1949 | ## |
1950 | # @DirtyLimitInfo: | |
1951 | # | |
1952 | # Dirty page rate limit information of a virtual CPU. | |
1953 | # | |
1954 | # @cpu-index: index of a virtual CPU. | |
1955 | # | |
1956 | # @limit-rate: upper limit of dirty page rate (MB/s) for a virtual | |
a937b6aa | 1957 | # CPU, 0 means unlimited. |
f3b2e38c HH |
1958 | # |
1959 | # @current-rate: current dirty page rate (MB/s) for a virtual CPU. | |
1960 | # | |
1961 | # Since: 7.1 | |
f3b2e38c HH |
1962 | ## |
1963 | { 'struct': 'DirtyLimitInfo', | |
1964 | 'data': { 'cpu-index': 'int', | |
1965 | 'limit-rate': 'uint64', | |
1966 | 'current-rate': 'uint64' } } | |
1967 | ||
1968 | ## | |
1969 | # @set-vcpu-dirty-limit: | |
1970 | # | |
1971 | # Set the upper limit of dirty page rate for virtual CPUs. | |
1972 | # | |
a937b6aa MA |
1973 | # Requires KVM with accelerator property "dirty-ring-size" set. A |
1974 | # virtual CPU's dirty page rate is a measure of its memory load. To | |
1975 | # observe dirty page rates, use @calc-dirty-rate. | |
f3b2e38c HH |
1976 | # |
1977 | # @cpu-index: index of a virtual CPU, default is all. | |
1978 | # | |
1979 | # @dirty-rate: upper limit of dirty page rate (MB/s) for virtual CPUs. | |
1980 | # | |
1981 | # Since: 7.1 | |
1982 | # | |
1983 | # Example: | |
37fa48a4 MA |
1984 | # |
1985 | # -> {"execute": "set-vcpu-dirty-limit"} | |
1986 | # "arguments": { "dirty-rate": 200, | |
1987 | # "cpu-index": 1 } } | |
1988 | # <- { "return": {} } | |
f3b2e38c HH |
1989 | ## |
1990 | { 'command': 'set-vcpu-dirty-limit', | |
1991 | 'data': { '*cpu-index': 'int', | |
1992 | 'dirty-rate': 'uint64' } } | |
1993 | ||
1994 | ## | |
1995 | # @cancel-vcpu-dirty-limit: | |
1996 | # | |
1997 | # Cancel the upper limit of dirty page rate for virtual CPUs. | |
1998 | # | |
1999 | # Cancel the dirty page limit for the vCPU which has been set with | |
a937b6aa | 2000 | # set-vcpu-dirty-limit command. Note that this command requires |
f3b2e38c HH |
2001 | # support from dirty ring, same as the "set-vcpu-dirty-limit". |
2002 | # | |
2003 | # @cpu-index: index of a virtual CPU, default is all. | |
2004 | # | |
2005 | # Since: 7.1 | |
2006 | # | |
2007 | # Example: | |
37fa48a4 MA |
2008 | # |
2009 | # -> {"execute": "cancel-vcpu-dirty-limit"}, | |
2010 | # "arguments": { "cpu-index": 1 } } | |
2011 | # <- { "return": {} } | |
f3b2e38c HH |
2012 | ## |
2013 | { 'command': 'cancel-vcpu-dirty-limit', | |
2014 | 'data': { '*cpu-index': 'int'} } | |
2015 | ||
2016 | ## | |
2017 | # @query-vcpu-dirty-limit: | |
2018 | # | |
a937b6aa MA |
2019 | # Returns information about virtual CPU dirty page rate limits, if |
2020 | # any. | |
f3b2e38c HH |
2021 | # |
2022 | # Since: 7.1 | |
2023 | # | |
2024 | # Example: | |
37fa48a4 MA |
2025 | # |
2026 | # -> {"execute": "query-vcpu-dirty-limit"} | |
2027 | # <- {"return": [ | |
2028 | # { "limit-rate": 60, "current-rate": 3, "cpu-index": 0}, | |
2029 | # { "limit-rate": 60, "current-rate": 3, "cpu-index": 1}]} | |
f3b2e38c HH |
2030 | ## |
2031 | { 'command': 'query-vcpu-dirty-limit', | |
2032 | 'returns': [ 'DirtyLimitInfo' ] } | |
2033 | ||
67132620 JJ |
2034 | ## |
2035 | # @MigrationThreadInfo: | |
2036 | # | |
2037 | # Information about migrationthreads | |
2038 | # | |
2039 | # @name: the name of migration thread | |
2040 | # | |
2041 | # @thread-id: ID of the underlying host thread | |
2042 | # | |
2043 | # Since: 7.2 | |
2044 | ## | |
2045 | { 'struct': 'MigrationThreadInfo', | |
2046 | 'data': {'name': 'str', | |
2047 | 'thread-id': 'int'} } | |
2048 | ||
2049 | ## | |
2050 | # @query-migrationthreads: | |
2051 | # | |
2052 | # Returns information of migration threads | |
2053 | # | |
2054 | # data: migration thread name | |
2055 | # | |
7c3def93 | 2056 | # Returns: information about migration threads |
67132620 JJ |
2057 | # |
2058 | # Since: 7.2 | |
2059 | ## | |
2060 | { 'command': 'query-migrationthreads', | |
2061 | 'returns': ['MigrationThreadInfo'] } | |
2062 | ||
0f0d83a4 DB |
2063 | ## |
2064 | # @snapshot-save: | |
2065 | # | |
2066 | # Save a VM snapshot | |
2067 | # | |
2068 | # @job-id: identifier for the newly created job | |
a937b6aa | 2069 | # |
0f0d83a4 | 2070 | # @tag: name of the snapshot to create |
a937b6aa | 2071 | # |
0f0d83a4 | 2072 | # @vmstate: block device node name to save vmstate to |
a937b6aa | 2073 | # |
0f0d83a4 DB |
2074 | # @devices: list of block device node names to save a snapshot to |
2075 | # | |
2076 | # Applications should not assume that the snapshot save is complete | |
a937b6aa MA |
2077 | # when this command returns. The job commands / events must be used |
2078 | # to determine completion and to fetch details of any errors that | |
2079 | # arise. | |
0f0d83a4 | 2080 | # |
a937b6aa MA |
2081 | # Note that execution of the guest CPUs may be stopped during the time |
2082 | # it takes to save the snapshot. A future version of QEMU may ensure | |
2083 | # CPUs are executing continuously. | |
0f0d83a4 | 2084 | # |
a937b6aa MA |
2085 | # It is strongly recommended that @devices contain all writable block |
2086 | # device nodes if a consistent snapshot is required. | |
0f0d83a4 DB |
2087 | # |
2088 | # If @tag already exists, an error will be reported | |
2089 | # | |
2090 | # Returns: nothing | |
2091 | # | |
2092 | # Example: | |
2093 | # | |
2094 | # -> { "execute": "snapshot-save", | |
b1ca5322 | 2095 | # "arguments": { |
0f0d83a4 DB |
2096 | # "job-id": "snapsave0", |
2097 | # "tag": "my-snap", | |
2098 | # "vmstate": "disk0", | |
2099 | # "devices": ["disk0", "disk1"] | |
2100 | # } | |
2101 | # } | |
2102 | # <- { "return": { } } | |
2103 | # <- {"event": "JOB_STATUS_CHANGE", | |
6e7a37ff | 2104 | # "timestamp": {"seconds": 1432121972, "microseconds": 744001}, |
0f0d83a4 DB |
2105 | # "data": {"status": "created", "id": "snapsave0"}} |
2106 | # <- {"event": "JOB_STATUS_CHANGE", | |
6e7a37ff | 2107 | # "timestamp": {"seconds": 1432122172, "microseconds": 744001}, |
0f0d83a4 | 2108 | # "data": {"status": "running", "id": "snapsave0"}} |
6e7a37ff VT |
2109 | # <- {"event": "STOP", |
2110 | # "timestamp": {"seconds": 1432122372, "microseconds": 744001} } | |
2111 | # <- {"event": "RESUME", | |
2112 | # "timestamp": {"seconds": 1432122572, "microseconds": 744001} } | |
0f0d83a4 | 2113 | # <- {"event": "JOB_STATUS_CHANGE", |
6e7a37ff | 2114 | # "timestamp": {"seconds": 1432122772, "microseconds": 744001}, |
0f0d83a4 DB |
2115 | # "data": {"status": "waiting", "id": "snapsave0"}} |
2116 | # <- {"event": "JOB_STATUS_CHANGE", | |
6e7a37ff | 2117 | # "timestamp": {"seconds": 1432122972, "microseconds": 744001}, |
0f0d83a4 DB |
2118 | # "data": {"status": "pending", "id": "snapsave0"}} |
2119 | # <- {"event": "JOB_STATUS_CHANGE", | |
6e7a37ff | 2120 | # "timestamp": {"seconds": 1432123172, "microseconds": 744001}, |
0f0d83a4 DB |
2121 | # "data": {"status": "concluded", "id": "snapsave0"}} |
2122 | # -> {"execute": "query-jobs"} | |
2123 | # <- {"return": [{"current-progress": 1, | |
2124 | # "status": "concluded", | |
2125 | # "total-progress": 1, | |
2126 | # "type": "snapshot-save", | |
2127 | # "id": "snapsave0"}]} | |
2128 | # | |
2129 | # Since: 6.0 | |
2130 | ## | |
2131 | { 'command': 'snapshot-save', | |
2132 | 'data': { 'job-id': 'str', | |
2133 | 'tag': 'str', | |
2134 | 'vmstate': 'str', | |
2135 | 'devices': ['str'] } } | |
2136 | ||
2137 | ## | |
2138 | # @snapshot-load: | |
2139 | # | |
2140 | # Load a VM snapshot | |
2141 | # | |
2142 | # @job-id: identifier for the newly created job | |
a937b6aa | 2143 | # |
0f0d83a4 | 2144 | # @tag: name of the snapshot to load. |
a937b6aa | 2145 | # |
0f0d83a4 | 2146 | # @vmstate: block device node name to load vmstate from |
a937b6aa | 2147 | # |
0f0d83a4 DB |
2148 | # @devices: list of block device node names to load a snapshot from |
2149 | # | |
2150 | # Applications should not assume that the snapshot load is complete | |
a937b6aa MA |
2151 | # when this command returns. The job commands / events must be used |
2152 | # to determine completion and to fetch details of any errors that | |
2153 | # arise. | |
0f0d83a4 DB |
2154 | # |
2155 | # Note that execution of the guest CPUs will be stopped during the | |
2156 | # time it takes to load the snapshot. | |
2157 | # | |
a937b6aa MA |
2158 | # It is strongly recommended that @devices contain all writable block |
2159 | # device nodes that can have changed since the original @snapshot-save | |
2160 | # command execution. | |
0f0d83a4 DB |
2161 | # |
2162 | # Returns: nothing | |
2163 | # | |
2164 | # Example: | |
2165 | # | |
2166 | # -> { "execute": "snapshot-load", | |
b1ca5322 | 2167 | # "arguments": { |
0f0d83a4 DB |
2168 | # "job-id": "snapload0", |
2169 | # "tag": "my-snap", | |
2170 | # "vmstate": "disk0", | |
2171 | # "devices": ["disk0", "disk1"] | |
2172 | # } | |
2173 | # } | |
2174 | # <- { "return": { } } | |
2175 | # <- {"event": "JOB_STATUS_CHANGE", | |
6e7a37ff | 2176 | # "timestamp": {"seconds": 1472124172, "microseconds": 744001}, |
0f0d83a4 DB |
2177 | # "data": {"status": "created", "id": "snapload0"}} |
2178 | # <- {"event": "JOB_STATUS_CHANGE", | |
6e7a37ff | 2179 | # "timestamp": {"seconds": 1472125172, "microseconds": 744001}, |
0f0d83a4 | 2180 | # "data": {"status": "running", "id": "snapload0"}} |
6e7a37ff VT |
2181 | # <- {"event": "STOP", |
2182 | # "timestamp": {"seconds": 1472125472, "microseconds": 744001} } | |
2183 | # <- {"event": "RESUME", | |
2184 | # "timestamp": {"seconds": 1472125872, "microseconds": 744001} } | |
0f0d83a4 | 2185 | # <- {"event": "JOB_STATUS_CHANGE", |
6e7a37ff | 2186 | # "timestamp": {"seconds": 1472126172, "microseconds": 744001}, |
0f0d83a4 DB |
2187 | # "data": {"status": "waiting", "id": "snapload0"}} |
2188 | # <- {"event": "JOB_STATUS_CHANGE", | |
6e7a37ff | 2189 | # "timestamp": {"seconds": 1472127172, "microseconds": 744001}, |
0f0d83a4 DB |
2190 | # "data": {"status": "pending", "id": "snapload0"}} |
2191 | # <- {"event": "JOB_STATUS_CHANGE", | |
6e7a37ff | 2192 | # "timestamp": {"seconds": 1472128172, "microseconds": 744001}, |
0f0d83a4 DB |
2193 | # "data": {"status": "concluded", "id": "snapload0"}} |
2194 | # -> {"execute": "query-jobs"} | |
2195 | # <- {"return": [{"current-progress": 1, | |
2196 | # "status": "concluded", | |
2197 | # "total-progress": 1, | |
2198 | # "type": "snapshot-load", | |
2199 | # "id": "snapload0"}]} | |
2200 | # | |
2201 | # Since: 6.0 | |
2202 | ## | |
2203 | { 'command': 'snapshot-load', | |
2204 | 'data': { 'job-id': 'str', | |
2205 | 'tag': 'str', | |
2206 | 'vmstate': 'str', | |
2207 | 'devices': ['str'] } } | |
2208 | ||
2209 | ## | |
2210 | # @snapshot-delete: | |
2211 | # | |
2212 | # Delete a VM snapshot | |
2213 | # | |
2214 | # @job-id: identifier for the newly created job | |
a937b6aa | 2215 | # |
0f0d83a4 | 2216 | # @tag: name of the snapshot to delete. |
a937b6aa | 2217 | # |
0f0d83a4 DB |
2218 | # @devices: list of block device node names to delete a snapshot from |
2219 | # | |
2220 | # Applications should not assume that the snapshot delete is complete | |
a937b6aa MA |
2221 | # when this command returns. The job commands / events must be used |
2222 | # to determine completion and to fetch details of any errors that | |
2223 | # arise. | |
0f0d83a4 DB |
2224 | # |
2225 | # Returns: nothing | |
2226 | # | |
2227 | # Example: | |
2228 | # | |
2229 | # -> { "execute": "snapshot-delete", | |
b1ca5322 | 2230 | # "arguments": { |
0f0d83a4 DB |
2231 | # "job-id": "snapdelete0", |
2232 | # "tag": "my-snap", | |
2233 | # "devices": ["disk0", "disk1"] | |
2234 | # } | |
2235 | # } | |
2236 | # <- { "return": { } } | |
2237 | # <- {"event": "JOB_STATUS_CHANGE", | |
6e7a37ff | 2238 | # "timestamp": {"seconds": 1442124172, "microseconds": 744001}, |
0f0d83a4 DB |
2239 | # "data": {"status": "created", "id": "snapdelete0"}} |
2240 | # <- {"event": "JOB_STATUS_CHANGE", | |
6e7a37ff | 2241 | # "timestamp": {"seconds": 1442125172, "microseconds": 744001}, |
0f0d83a4 DB |
2242 | # "data": {"status": "running", "id": "snapdelete0"}} |
2243 | # <- {"event": "JOB_STATUS_CHANGE", | |
6e7a37ff | 2244 | # "timestamp": {"seconds": 1442126172, "microseconds": 744001}, |
0f0d83a4 DB |
2245 | # "data": {"status": "waiting", "id": "snapdelete0"}} |
2246 | # <- {"event": "JOB_STATUS_CHANGE", | |
6e7a37ff | 2247 | # "timestamp": {"seconds": 1442127172, "microseconds": 744001}, |
0f0d83a4 DB |
2248 | # "data": {"status": "pending", "id": "snapdelete0"}} |
2249 | # <- {"event": "JOB_STATUS_CHANGE", | |
6e7a37ff | 2250 | # "timestamp": {"seconds": 1442128172, "microseconds": 744001}, |
0f0d83a4 DB |
2251 | # "data": {"status": "concluded", "id": "snapdelete0"}} |
2252 | # -> {"execute": "query-jobs"} | |
2253 | # <- {"return": [{"current-progress": 1, | |
2254 | # "status": "concluded", | |
2255 | # "total-progress": 1, | |
2256 | # "type": "snapshot-delete", | |
2257 | # "id": "snapdelete0"}]} | |
2258 | # | |
2259 | # Since: 6.0 | |
2260 | ## | |
2261 | { 'command': 'snapshot-delete', | |
2262 | 'data': { 'job-id': 'str', | |
2263 | 'tag': 'str', | |
2264 | 'devices': ['str'] } } |