Kevin Wolf | 12c929b | 2020-02-24 15:29:51 +0100 | [diff] [blame] | 1 | /* |
| 2 | * QMP command handlers specific to the system emulators |
| 3 | * |
| 4 | * Copyright (c) 2003-2008 Fabrice Bellard |
| 5 | * |
| 6 | * This work is licensed under the terms of the GNU GPL, version 2 or |
| 7 | * later. See the COPYING file in the top-level directory. |
| 8 | * |
| 9 | * This file incorporates work covered by the following copyright and |
| 10 | * permission notice: |
| 11 | * |
| 12 | * Copyright (c) 2003-2008 Fabrice Bellard |
| 13 | * |
| 14 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
| 15 | * of this software and associated documentation files (the "Software"), to deal |
| 16 | * in the Software without restriction, including without limitation the rights |
| 17 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| 18 | * copies of the Software, and to permit persons to whom the Software is |
| 19 | * furnished to do so, subject to the following conditions: |
| 20 | * |
| 21 | * The above copyright notice and this permission notice shall be included in |
| 22 | * all copies or substantial portions of the Software. |
| 23 | * |
| 24 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 25 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 26 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 27 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 28 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| 29 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| 30 | * THE SOFTWARE. |
| 31 | */ |
| 32 | |
| 33 | #include "qemu/osdep.h" |
| 34 | |
| 35 | #include "qapi/error.h" |
| 36 | #include "qapi/qapi-commands-block.h" |
| 37 | #include "qapi/qmp/qdict.h" |
| 38 | #include "sysemu/block-backend.h" |
| 39 | #include "sysemu/blockdev.h" |
| 40 | |
| 41 | static BlockBackend *qmp_get_blk(const char *blk_name, const char *qdev_id, |
| 42 | Error **errp) |
| 43 | { |
| 44 | BlockBackend *blk; |
| 45 | |
| 46 | if (!blk_name == !qdev_id) { |
| 47 | error_setg(errp, "Need exactly one of 'device' and 'id'"); |
| 48 | return NULL; |
| 49 | } |
| 50 | |
| 51 | if (qdev_id) { |
| 52 | blk = blk_by_qdev_id(qdev_id, errp); |
| 53 | } else { |
| 54 | blk = blk_by_name(blk_name); |
| 55 | if (blk == NULL) { |
| 56 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
| 57 | "Device '%s' not found", blk_name); |
| 58 | } |
| 59 | } |
| 60 | |
| 61 | return blk; |
| 62 | } |
| 63 | |
| 64 | /* |
| 65 | * Attempt to open the tray of @device. |
| 66 | * If @force, ignore its tray lock. |
| 67 | * Else, if the tray is locked, don't open it, but ask the guest to open it. |
| 68 | * On error, store an error through @errp and return -errno. |
| 69 | * If @device does not exist, return -ENODEV. |
| 70 | * If it has no removable media, return -ENOTSUP. |
| 71 | * If it has no tray, return -ENOSYS. |
| 72 | * If the guest was asked to open the tray, return -EINPROGRESS. |
| 73 | * Else, return 0. |
| 74 | */ |
| 75 | static int do_open_tray(const char *blk_name, const char *qdev_id, |
| 76 | bool force, Error **errp) |
| 77 | { |
| 78 | BlockBackend *blk; |
| 79 | const char *device = qdev_id ?: blk_name; |
| 80 | bool locked; |
| 81 | |
| 82 | blk = qmp_get_blk(blk_name, qdev_id, errp); |
| 83 | if (!blk) { |
| 84 | return -ENODEV; |
| 85 | } |
| 86 | |
| 87 | if (!blk_dev_has_removable_media(blk)) { |
| 88 | error_setg(errp, "Device '%s' is not removable", device); |
| 89 | return -ENOTSUP; |
| 90 | } |
| 91 | |
| 92 | if (!blk_dev_has_tray(blk)) { |
| 93 | error_setg(errp, "Device '%s' does not have a tray", device); |
| 94 | return -ENOSYS; |
| 95 | } |
| 96 | |
| 97 | if (blk_dev_is_tray_open(blk)) { |
| 98 | return 0; |
| 99 | } |
| 100 | |
| 101 | locked = blk_dev_is_medium_locked(blk); |
| 102 | if (locked) { |
| 103 | blk_dev_eject_request(blk, force); |
| 104 | } |
| 105 | |
| 106 | if (!locked || force) { |
| 107 | blk_dev_change_media_cb(blk, false, &error_abort); |
| 108 | } |
| 109 | |
| 110 | if (locked && !force) { |
| 111 | error_setg(errp, "Device '%s' is locked and force was not specified, " |
| 112 | "wait for tray to open and try again", device); |
| 113 | return -EINPROGRESS; |
| 114 | } |
| 115 | |
| 116 | return 0; |
| 117 | } |
| 118 | |
| 119 | void qmp_blockdev_open_tray(bool has_device, const char *device, |
| 120 | bool has_id, const char *id, |
| 121 | bool has_force, bool force, |
| 122 | Error **errp) |
| 123 | { |
| 124 | Error *local_err = NULL; |
| 125 | int rc; |
| 126 | |
| 127 | if (!has_force) { |
| 128 | force = false; |
| 129 | } |
| 130 | rc = do_open_tray(has_device ? device : NULL, |
| 131 | has_id ? id : NULL, |
| 132 | force, &local_err); |
| 133 | if (rc && rc != -ENOSYS && rc != -EINPROGRESS) { |
| 134 | error_propagate(errp, local_err); |
| 135 | return; |
| 136 | } |
| 137 | error_free(local_err); |
| 138 | } |
| 139 | |
| 140 | void qmp_blockdev_close_tray(bool has_device, const char *device, |
| 141 | bool has_id, const char *id, |
| 142 | Error **errp) |
| 143 | { |
| 144 | BlockBackend *blk; |
| 145 | Error *local_err = NULL; |
| 146 | |
| 147 | device = has_device ? device : NULL; |
| 148 | id = has_id ? id : NULL; |
| 149 | |
| 150 | blk = qmp_get_blk(device, id, errp); |
| 151 | if (!blk) { |
| 152 | return; |
| 153 | } |
| 154 | |
| 155 | if (!blk_dev_has_removable_media(blk)) { |
| 156 | error_setg(errp, "Device '%s' is not removable", device ?: id); |
| 157 | return; |
| 158 | } |
| 159 | |
| 160 | if (!blk_dev_has_tray(blk)) { |
| 161 | /* Ignore this command on tray-less devices */ |
| 162 | return; |
| 163 | } |
| 164 | |
| 165 | if (!blk_dev_is_tray_open(blk)) { |
| 166 | return; |
| 167 | } |
| 168 | |
| 169 | blk_dev_change_media_cb(blk, true, &local_err); |
| 170 | if (local_err) { |
| 171 | error_propagate(errp, local_err); |
| 172 | return; |
| 173 | } |
| 174 | } |
| 175 | |
| 176 | static void blockdev_remove_medium(bool has_device, const char *device, |
| 177 | bool has_id, const char *id, Error **errp) |
| 178 | { |
| 179 | BlockBackend *blk; |
| 180 | BlockDriverState *bs; |
| 181 | AioContext *aio_context; |
| 182 | bool has_attached_device; |
| 183 | |
| 184 | device = has_device ? device : NULL; |
| 185 | id = has_id ? id : NULL; |
| 186 | |
| 187 | blk = qmp_get_blk(device, id, errp); |
| 188 | if (!blk) { |
| 189 | return; |
| 190 | } |
| 191 | |
| 192 | /* For BBs without a device, we can exchange the BDS tree at will */ |
| 193 | has_attached_device = blk_get_attached_dev(blk); |
| 194 | |
| 195 | if (has_attached_device && !blk_dev_has_removable_media(blk)) { |
| 196 | error_setg(errp, "Device '%s' is not removable", device ?: id); |
| 197 | return; |
| 198 | } |
| 199 | |
| 200 | if (has_attached_device && blk_dev_has_tray(blk) && |
| 201 | !blk_dev_is_tray_open(blk)) |
| 202 | { |
| 203 | error_setg(errp, "Tray of device '%s' is not open", device ?: id); |
| 204 | return; |
| 205 | } |
| 206 | |
| 207 | bs = blk_bs(blk); |
| 208 | if (!bs) { |
| 209 | return; |
| 210 | } |
| 211 | |
| 212 | aio_context = bdrv_get_aio_context(bs); |
| 213 | aio_context_acquire(aio_context); |
| 214 | |
| 215 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_EJECT, errp)) { |
| 216 | goto out; |
| 217 | } |
| 218 | |
| 219 | blk_remove_bs(blk); |
| 220 | |
| 221 | if (!blk_dev_has_tray(blk)) { |
| 222 | /* For tray-less devices, blockdev-open-tray is a no-op (or may not be |
| 223 | * called at all); therefore, the medium needs to be ejected here. |
| 224 | * Do it after blk_remove_bs() so blk_is_inserted(blk) returns the @load |
| 225 | * value passed here (i.e. false). */ |
| 226 | blk_dev_change_media_cb(blk, false, &error_abort); |
| 227 | } |
| 228 | |
| 229 | out: |
| 230 | aio_context_release(aio_context); |
| 231 | } |
| 232 | |
| 233 | void qmp_blockdev_remove_medium(const char *id, Error **errp) |
| 234 | { |
| 235 | blockdev_remove_medium(false, NULL, true, id, errp); |
| 236 | } |
| 237 | |
| 238 | static void qmp_blockdev_insert_anon_medium(BlockBackend *blk, |
| 239 | BlockDriverState *bs, Error **errp) |
| 240 | { |
| 241 | Error *local_err = NULL; |
| 242 | bool has_device; |
| 243 | int ret; |
| 244 | |
| 245 | /* For BBs without a device, we can exchange the BDS tree at will */ |
| 246 | has_device = blk_get_attached_dev(blk); |
| 247 | |
| 248 | if (has_device && !blk_dev_has_removable_media(blk)) { |
| 249 | error_setg(errp, "Device is not removable"); |
| 250 | return; |
| 251 | } |
| 252 | |
| 253 | if (has_device && blk_dev_has_tray(blk) && !blk_dev_is_tray_open(blk)) { |
| 254 | error_setg(errp, "Tray of the device is not open"); |
| 255 | return; |
| 256 | } |
| 257 | |
| 258 | if (blk_bs(blk)) { |
| 259 | error_setg(errp, "There already is a medium in the device"); |
| 260 | return; |
| 261 | } |
| 262 | |
| 263 | ret = blk_insert_bs(blk, bs, errp); |
| 264 | if (ret < 0) { |
| 265 | return; |
| 266 | } |
| 267 | |
| 268 | if (!blk_dev_has_tray(blk)) { |
| 269 | /* For tray-less devices, blockdev-close-tray is a no-op (or may not be |
| 270 | * called at all); therefore, the medium needs to be pushed into the |
| 271 | * slot here. |
| 272 | * Do it after blk_insert_bs() so blk_is_inserted(blk) returns the @load |
| 273 | * value passed here (i.e. true). */ |
| 274 | blk_dev_change_media_cb(blk, true, &local_err); |
| 275 | if (local_err) { |
| 276 | error_propagate(errp, local_err); |
| 277 | blk_remove_bs(blk); |
| 278 | return; |
| 279 | } |
| 280 | } |
| 281 | } |
| 282 | |
| 283 | static void blockdev_insert_medium(bool has_device, const char *device, |
| 284 | bool has_id, const char *id, |
| 285 | const char *node_name, Error **errp) |
| 286 | { |
| 287 | BlockBackend *blk; |
| 288 | BlockDriverState *bs; |
| 289 | |
| 290 | blk = qmp_get_blk(has_device ? device : NULL, |
| 291 | has_id ? id : NULL, |
| 292 | errp); |
| 293 | if (!blk) { |
| 294 | return; |
| 295 | } |
| 296 | |
| 297 | bs = bdrv_find_node(node_name); |
| 298 | if (!bs) { |
| 299 | error_setg(errp, "Node '%s' not found", node_name); |
| 300 | return; |
| 301 | } |
| 302 | |
| 303 | if (bdrv_has_blk(bs)) { |
| 304 | error_setg(errp, "Node '%s' is already in use", node_name); |
| 305 | return; |
| 306 | } |
| 307 | |
| 308 | qmp_blockdev_insert_anon_medium(blk, bs, errp); |
| 309 | } |
| 310 | |
| 311 | void qmp_blockdev_insert_medium(const char *id, const char *node_name, |
| 312 | Error **errp) |
| 313 | { |
| 314 | blockdev_insert_medium(false, NULL, true, id, node_name, errp); |
| 315 | } |
| 316 | |
| 317 | void qmp_blockdev_change_medium(bool has_device, const char *device, |
| 318 | bool has_id, const char *id, |
| 319 | const char *filename, |
| 320 | bool has_format, const char *format, |
| 321 | bool has_read_only, |
| 322 | BlockdevChangeReadOnlyMode read_only, |
| 323 | Error **errp) |
| 324 | { |
| 325 | BlockBackend *blk; |
| 326 | BlockDriverState *medium_bs = NULL; |
| 327 | int bdrv_flags; |
| 328 | bool detect_zeroes; |
| 329 | int rc; |
| 330 | QDict *options = NULL; |
| 331 | Error *err = NULL; |
| 332 | |
| 333 | blk = qmp_get_blk(has_device ? device : NULL, |
| 334 | has_id ? id : NULL, |
| 335 | errp); |
| 336 | if (!blk) { |
| 337 | goto fail; |
| 338 | } |
| 339 | |
| 340 | if (blk_bs(blk)) { |
| 341 | blk_update_root_state(blk); |
| 342 | } |
| 343 | |
| 344 | bdrv_flags = blk_get_open_flags_from_root_state(blk); |
| 345 | bdrv_flags &= ~(BDRV_O_TEMPORARY | BDRV_O_SNAPSHOT | BDRV_O_NO_BACKING | |
| 346 | BDRV_O_PROTOCOL | BDRV_O_AUTO_RDONLY); |
| 347 | |
| 348 | if (!has_read_only) { |
| 349 | read_only = BLOCKDEV_CHANGE_READ_ONLY_MODE_RETAIN; |
| 350 | } |
| 351 | |
| 352 | switch (read_only) { |
| 353 | case BLOCKDEV_CHANGE_READ_ONLY_MODE_RETAIN: |
| 354 | break; |
| 355 | |
| 356 | case BLOCKDEV_CHANGE_READ_ONLY_MODE_READ_ONLY: |
| 357 | bdrv_flags &= ~BDRV_O_RDWR; |
| 358 | break; |
| 359 | |
| 360 | case BLOCKDEV_CHANGE_READ_ONLY_MODE_READ_WRITE: |
| 361 | bdrv_flags |= BDRV_O_RDWR; |
| 362 | break; |
| 363 | |
| 364 | default: |
| 365 | abort(); |
| 366 | } |
| 367 | |
| 368 | options = qdict_new(); |
| 369 | detect_zeroes = blk_get_detect_zeroes_from_root_state(blk); |
| 370 | qdict_put_str(options, "detect-zeroes", detect_zeroes ? "on" : "off"); |
| 371 | |
| 372 | if (has_format) { |
| 373 | qdict_put_str(options, "driver", format); |
| 374 | } |
| 375 | |
| 376 | medium_bs = bdrv_open(filename, NULL, options, bdrv_flags, errp); |
| 377 | if (!medium_bs) { |
| 378 | goto fail; |
| 379 | } |
| 380 | |
| 381 | rc = do_open_tray(has_device ? device : NULL, |
| 382 | has_id ? id : NULL, |
| 383 | false, &err); |
| 384 | if (rc && rc != -ENOSYS) { |
| 385 | error_propagate(errp, err); |
| 386 | goto fail; |
| 387 | } |
| 388 | error_free(err); |
| 389 | err = NULL; |
| 390 | |
| 391 | blockdev_remove_medium(has_device, device, has_id, id, &err); |
| 392 | if (err) { |
| 393 | error_propagate(errp, err); |
| 394 | goto fail; |
| 395 | } |
| 396 | |
| 397 | qmp_blockdev_insert_anon_medium(blk, medium_bs, &err); |
| 398 | if (err) { |
| 399 | error_propagate(errp, err); |
| 400 | goto fail; |
| 401 | } |
| 402 | |
| 403 | qmp_blockdev_close_tray(has_device, device, has_id, id, errp); |
| 404 | |
| 405 | fail: |
| 406 | /* If the medium has been inserted, the device has its own reference, so |
| 407 | * ours must be relinquished; and if it has not been inserted successfully, |
| 408 | * the reference must be relinquished anyway */ |
| 409 | bdrv_unref(medium_bs); |
| 410 | } |
| 411 | |
| 412 | void qmp_eject(bool has_device, const char *device, |
| 413 | bool has_id, const char *id, |
| 414 | bool has_force, bool force, Error **errp) |
| 415 | { |
| 416 | Error *local_err = NULL; |
| 417 | int rc; |
| 418 | |
| 419 | if (!has_force) { |
| 420 | force = false; |
| 421 | } |
| 422 | |
| 423 | rc = do_open_tray(has_device ? device : NULL, |
| 424 | has_id ? id : NULL, |
| 425 | force, &local_err); |
| 426 | if (rc && rc != -ENOSYS) { |
| 427 | error_propagate(errp, local_err); |
| 428 | return; |
| 429 | } |
| 430 | error_free(local_err); |
| 431 | |
| 432 | blockdev_remove_medium(has_device, device, has_id, id, errp); |
| 433 | } |
| 434 | |
| 435 | /* throttling disk I/O limits */ |
| 436 | void qmp_block_set_io_throttle(BlockIOThrottle *arg, Error **errp) |
| 437 | { |
| 438 | ThrottleConfig cfg; |
| 439 | BlockDriverState *bs; |
| 440 | BlockBackend *blk; |
| 441 | AioContext *aio_context; |
| 442 | |
| 443 | blk = qmp_get_blk(arg->has_device ? arg->device : NULL, |
| 444 | arg->has_id ? arg->id : NULL, |
| 445 | errp); |
| 446 | if (!blk) { |
| 447 | return; |
| 448 | } |
| 449 | |
| 450 | aio_context = blk_get_aio_context(blk); |
| 451 | aio_context_acquire(aio_context); |
| 452 | |
| 453 | bs = blk_bs(blk); |
| 454 | if (!bs) { |
| 455 | error_setg(errp, "Device has no medium"); |
| 456 | goto out; |
| 457 | } |
| 458 | |
| 459 | throttle_config_init(&cfg); |
| 460 | cfg.buckets[THROTTLE_BPS_TOTAL].avg = arg->bps; |
| 461 | cfg.buckets[THROTTLE_BPS_READ].avg = arg->bps_rd; |
| 462 | cfg.buckets[THROTTLE_BPS_WRITE].avg = arg->bps_wr; |
| 463 | |
| 464 | cfg.buckets[THROTTLE_OPS_TOTAL].avg = arg->iops; |
| 465 | cfg.buckets[THROTTLE_OPS_READ].avg = arg->iops_rd; |
| 466 | cfg.buckets[THROTTLE_OPS_WRITE].avg = arg->iops_wr; |
| 467 | |
| 468 | if (arg->has_bps_max) { |
| 469 | cfg.buckets[THROTTLE_BPS_TOTAL].max = arg->bps_max; |
| 470 | } |
| 471 | if (arg->has_bps_rd_max) { |
| 472 | cfg.buckets[THROTTLE_BPS_READ].max = arg->bps_rd_max; |
| 473 | } |
| 474 | if (arg->has_bps_wr_max) { |
| 475 | cfg.buckets[THROTTLE_BPS_WRITE].max = arg->bps_wr_max; |
| 476 | } |
| 477 | if (arg->has_iops_max) { |
| 478 | cfg.buckets[THROTTLE_OPS_TOTAL].max = arg->iops_max; |
| 479 | } |
| 480 | if (arg->has_iops_rd_max) { |
| 481 | cfg.buckets[THROTTLE_OPS_READ].max = arg->iops_rd_max; |
| 482 | } |
| 483 | if (arg->has_iops_wr_max) { |
| 484 | cfg.buckets[THROTTLE_OPS_WRITE].max = arg->iops_wr_max; |
| 485 | } |
| 486 | |
| 487 | if (arg->has_bps_max_length) { |
| 488 | cfg.buckets[THROTTLE_BPS_TOTAL].burst_length = arg->bps_max_length; |
| 489 | } |
| 490 | if (arg->has_bps_rd_max_length) { |
| 491 | cfg.buckets[THROTTLE_BPS_READ].burst_length = arg->bps_rd_max_length; |
| 492 | } |
| 493 | if (arg->has_bps_wr_max_length) { |
| 494 | cfg.buckets[THROTTLE_BPS_WRITE].burst_length = arg->bps_wr_max_length; |
| 495 | } |
| 496 | if (arg->has_iops_max_length) { |
| 497 | cfg.buckets[THROTTLE_OPS_TOTAL].burst_length = arg->iops_max_length; |
| 498 | } |
| 499 | if (arg->has_iops_rd_max_length) { |
| 500 | cfg.buckets[THROTTLE_OPS_READ].burst_length = arg->iops_rd_max_length; |
| 501 | } |
| 502 | if (arg->has_iops_wr_max_length) { |
| 503 | cfg.buckets[THROTTLE_OPS_WRITE].burst_length = arg->iops_wr_max_length; |
| 504 | } |
| 505 | |
| 506 | if (arg->has_iops_size) { |
| 507 | cfg.op_size = arg->iops_size; |
| 508 | } |
| 509 | |
| 510 | if (!throttle_is_valid(&cfg, errp)) { |
| 511 | goto out; |
| 512 | } |
| 513 | |
| 514 | if (throttle_enabled(&cfg)) { |
| 515 | /* Enable I/O limits if they're not enabled yet, otherwise |
| 516 | * just update the throttling group. */ |
| 517 | if (!blk_get_public(blk)->throttle_group_member.throttle_state) { |
| 518 | blk_io_limits_enable(blk, |
| 519 | arg->has_group ? arg->group : |
| 520 | arg->has_device ? arg->device : |
| 521 | arg->id); |
| 522 | } else if (arg->has_group) { |
| 523 | blk_io_limits_update_group(blk, arg->group); |
| 524 | } |
| 525 | /* Set the new throttling configuration */ |
| 526 | blk_set_io_limits(blk, &cfg); |
| 527 | } else if (blk_get_public(blk)->throttle_group_member.throttle_state) { |
| 528 | /* If all throttling settings are set to 0, disable I/O limits */ |
| 529 | blk_io_limits_disable(blk); |
| 530 | } |
| 531 | |
| 532 | out: |
| 533 | aio_context_release(aio_context); |
| 534 | } |
| 535 | |
| 536 | void qmp_block_latency_histogram_set( |
| 537 | const char *id, |
| 538 | bool has_boundaries, uint64List *boundaries, |
| 539 | bool has_boundaries_read, uint64List *boundaries_read, |
| 540 | bool has_boundaries_write, uint64List *boundaries_write, |
| 541 | bool has_boundaries_flush, uint64List *boundaries_flush, |
| 542 | Error **errp) |
| 543 | { |
| 544 | BlockBackend *blk = qmp_get_blk(NULL, id, errp); |
| 545 | BlockAcctStats *stats; |
| 546 | int ret; |
| 547 | |
| 548 | if (!blk) { |
| 549 | return; |
| 550 | } |
| 551 | |
| 552 | stats = blk_get_stats(blk); |
| 553 | |
| 554 | if (!has_boundaries && !has_boundaries_read && !has_boundaries_write && |
| 555 | !has_boundaries_flush) |
| 556 | { |
| 557 | block_latency_histograms_clear(stats); |
| 558 | return; |
| 559 | } |
| 560 | |
| 561 | if (has_boundaries || has_boundaries_read) { |
| 562 | ret = block_latency_histogram_set( |
| 563 | stats, BLOCK_ACCT_READ, |
| 564 | has_boundaries_read ? boundaries_read : boundaries); |
| 565 | if (ret) { |
| 566 | error_setg(errp, "Device '%s' set read boundaries fail", id); |
| 567 | return; |
| 568 | } |
| 569 | } |
| 570 | |
| 571 | if (has_boundaries || has_boundaries_write) { |
| 572 | ret = block_latency_histogram_set( |
| 573 | stats, BLOCK_ACCT_WRITE, |
| 574 | has_boundaries_write ? boundaries_write : boundaries); |
| 575 | if (ret) { |
| 576 | error_setg(errp, "Device '%s' set write boundaries fail", id); |
| 577 | return; |
| 578 | } |
| 579 | } |
| 580 | |
| 581 | if (has_boundaries || has_boundaries_flush) { |
| 582 | ret = block_latency_histogram_set( |
| 583 | stats, BLOCK_ACCT_FLUSH, |
| 584 | has_boundaries_flush ? boundaries_flush : boundaries); |
| 585 | if (ret) { |
| 586 | error_setg(errp, "Device '%s' set flush boundaries fail", id); |
| 587 | return; |
| 588 | } |
| 589 | } |
| 590 | } |