qapi.c (29105B)
1 /* 2 * Block layer qmp and info dump related functions 3 * 4 * Copyright (c) 2003-2008 Fabrice Bellard 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a copy 7 * of this software and associated documentation files (the "Software"), to deal 8 * in the Software without restriction, including without limitation the rights 9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 10 * copies of the Software, and to permit persons to whom the Software is 11 * furnished to do so, subject to the following conditions: 12 * 13 * The above copyright notice and this permission notice shall be included in 14 * all copies or substantial portions of the Software. 15 * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 22 * THE SOFTWARE. 23 */ 24 25 #include "qemu/osdep.h" 26 #include "qemu/cutils.h" 27 #include "block/qapi.h" 28 #include "block/block_int.h" 29 #include "block/throttle-groups.h" 30 #include "block/write-threshold.h" 31 #include "qapi/error.h" 32 #include "qapi/qapi-commands-block-core.h" 33 #include "qapi/qobject-output-visitor.h" 34 #include "qapi/qapi-visit-block-core.h" 35 #include "qapi/qmp/qbool.h" 36 #include "qapi/qmp/qdict.h" 37 #include "qapi/qmp/qlist.h" 38 #include "qapi/qmp/qnum.h" 39 #include "qapi/qmp/qstring.h" 40 #include "qemu/qemu-print.h" 41 #include "sysemu/block-backend.h" 42 #include "qemu/cutils.h" 43 44 BlockDeviceInfo *bdrv_block_device_info(BlockBackend *blk, 45 BlockDriverState *bs, 46 bool flat, 47 Error **errp) 48 { 49 ImageInfo **p_image_info; 50 BlockDriverState *bs0, *backing; 51 BlockDeviceInfo *info; 52 53 if (!bs->drv) { 54 error_setg(errp, "Block device %s is ejected", bs->node_name); 55 return NULL; 56 } 57 58 bdrv_refresh_filename(bs); 59 60 info = g_malloc0(sizeof(*info)); 61 info->file = g_strdup(bs->filename); 62 info->ro = bdrv_is_read_only(bs); 63 info->drv = g_strdup(bs->drv->format_name); 64 info->encrypted = bs->encrypted; 65 66 info->cache = g_new(BlockdevCacheInfo, 1); 67 *info->cache = (BlockdevCacheInfo) { 68 .writeback = blk ? blk_enable_write_cache(blk) : true, 69 .direct = !!(bs->open_flags & BDRV_O_NOCACHE), 70 .no_flush = !!(bs->open_flags & BDRV_O_NO_FLUSH), 71 }; 72 73 if (bs->node_name[0]) { 74 info->has_node_name = true; 75 info->node_name = g_strdup(bs->node_name); 76 } 77 78 backing = bdrv_cow_bs(bs); 79 if (backing) { 80 info->has_backing_file = true; 81 info->backing_file = g_strdup(backing->filename); 82 } 83 84 if (!QLIST_EMPTY(&bs->dirty_bitmaps)) { 85 info->has_dirty_bitmaps = true; 86 info->dirty_bitmaps = bdrv_query_dirty_bitmaps(bs); 87 } 88 89 info->detect_zeroes = bs->detect_zeroes; 90 91 if (blk && blk_get_public(blk)->throttle_group_member.throttle_state) { 92 ThrottleConfig cfg; 93 BlockBackendPublic *blkp = blk_get_public(blk); 94 95 throttle_group_get_config(&blkp->throttle_group_member, &cfg); 96 97 info->bps = cfg.buckets[THROTTLE_BPS_TOTAL].avg; 98 info->bps_rd = cfg.buckets[THROTTLE_BPS_READ].avg; 99 info->bps_wr = cfg.buckets[THROTTLE_BPS_WRITE].avg; 100 101 info->iops = cfg.buckets[THROTTLE_OPS_TOTAL].avg; 102 info->iops_rd = cfg.buckets[THROTTLE_OPS_READ].avg; 103 info->iops_wr = cfg.buckets[THROTTLE_OPS_WRITE].avg; 104 105 info->has_bps_max = cfg.buckets[THROTTLE_BPS_TOTAL].max; 106 info->bps_max = cfg.buckets[THROTTLE_BPS_TOTAL].max; 107 info->has_bps_rd_max = cfg.buckets[THROTTLE_BPS_READ].max; 108 info->bps_rd_max = cfg.buckets[THROTTLE_BPS_READ].max; 109 info->has_bps_wr_max = cfg.buckets[THROTTLE_BPS_WRITE].max; 110 info->bps_wr_max = cfg.buckets[THROTTLE_BPS_WRITE].max; 111 112 info->has_iops_max = cfg.buckets[THROTTLE_OPS_TOTAL].max; 113 info->iops_max = cfg.buckets[THROTTLE_OPS_TOTAL].max; 114 info->has_iops_rd_max = cfg.buckets[THROTTLE_OPS_READ].max; 115 info->iops_rd_max = cfg.buckets[THROTTLE_OPS_READ].max; 116 info->has_iops_wr_max = cfg.buckets[THROTTLE_OPS_WRITE].max; 117 info->iops_wr_max = cfg.buckets[THROTTLE_OPS_WRITE].max; 118 119 info->has_bps_max_length = info->has_bps_max; 120 info->bps_max_length = 121 cfg.buckets[THROTTLE_BPS_TOTAL].burst_length; 122 info->has_bps_rd_max_length = info->has_bps_rd_max; 123 info->bps_rd_max_length = 124 cfg.buckets[THROTTLE_BPS_READ].burst_length; 125 info->has_bps_wr_max_length = info->has_bps_wr_max; 126 info->bps_wr_max_length = 127 cfg.buckets[THROTTLE_BPS_WRITE].burst_length; 128 129 info->has_iops_max_length = info->has_iops_max; 130 info->iops_max_length = 131 cfg.buckets[THROTTLE_OPS_TOTAL].burst_length; 132 info->has_iops_rd_max_length = info->has_iops_rd_max; 133 info->iops_rd_max_length = 134 cfg.buckets[THROTTLE_OPS_READ].burst_length; 135 info->has_iops_wr_max_length = info->has_iops_wr_max; 136 info->iops_wr_max_length = 137 cfg.buckets[THROTTLE_OPS_WRITE].burst_length; 138 139 info->has_iops_size = cfg.op_size; 140 info->iops_size = cfg.op_size; 141 142 info->has_group = true; 143 info->group = 144 g_strdup(throttle_group_get_name(&blkp->throttle_group_member)); 145 } 146 147 info->write_threshold = bdrv_write_threshold_get(bs); 148 149 bs0 = bs; 150 p_image_info = &info->image; 151 info->backing_file_depth = 0; 152 while (1) { 153 Error *local_err = NULL; 154 bdrv_query_image_info(bs0, p_image_info, &local_err); 155 if (local_err) { 156 error_propagate(errp, local_err); 157 qapi_free_BlockDeviceInfo(info); 158 return NULL; 159 } 160 161 /* stop gathering data for flat output */ 162 if (flat) { 163 break; 164 } 165 166 if (bs0->drv && bdrv_filter_or_cow_child(bs0)) { 167 /* 168 * Put any filtered child here (for backwards compatibility to when 169 * we put bs0->backing here, which might be any filtered child). 170 */ 171 info->backing_file_depth++; 172 bs0 = bdrv_filter_or_cow_bs(bs0); 173 (*p_image_info)->has_backing_image = true; 174 p_image_info = &((*p_image_info)->backing_image); 175 } else { 176 break; 177 } 178 179 /* Skip automatically inserted nodes that the user isn't aware of for 180 * query-block (blk != NULL), but not for query-named-block-nodes */ 181 if (blk) { 182 bs0 = bdrv_skip_implicit_filters(bs0); 183 } 184 } 185 186 return info; 187 } 188 189 /* 190 * Returns 0 on success, with *p_list either set to describe snapshot 191 * information, or NULL because there are no snapshots. Returns -errno on 192 * error, with *p_list untouched. 193 */ 194 int bdrv_query_snapshot_info_list(BlockDriverState *bs, 195 SnapshotInfoList **p_list, 196 Error **errp) 197 { 198 int i, sn_count; 199 QEMUSnapshotInfo *sn_tab = NULL; 200 SnapshotInfoList *head = NULL, **tail = &head; 201 SnapshotInfo *info; 202 203 sn_count = bdrv_snapshot_list(bs, &sn_tab); 204 if (sn_count < 0) { 205 const char *dev = bdrv_get_device_name(bs); 206 switch (sn_count) { 207 case -ENOMEDIUM: 208 error_setg(errp, "Device '%s' is not inserted", dev); 209 break; 210 case -ENOTSUP: 211 error_setg(errp, 212 "Device '%s' does not support internal snapshots", 213 dev); 214 break; 215 default: 216 error_setg_errno(errp, -sn_count, 217 "Can't list snapshots of device '%s'", dev); 218 break; 219 } 220 return sn_count; 221 } 222 223 for (i = 0; i < sn_count; i++) { 224 info = g_new0(SnapshotInfo, 1); 225 info->id = g_strdup(sn_tab[i].id_str); 226 info->name = g_strdup(sn_tab[i].name); 227 info->vm_state_size = sn_tab[i].vm_state_size; 228 info->date_sec = sn_tab[i].date_sec; 229 info->date_nsec = sn_tab[i].date_nsec; 230 info->vm_clock_sec = sn_tab[i].vm_clock_nsec / 1000000000; 231 info->vm_clock_nsec = sn_tab[i].vm_clock_nsec % 1000000000; 232 info->icount = sn_tab[i].icount; 233 info->has_icount = sn_tab[i].icount != -1ULL; 234 235 QAPI_LIST_APPEND(tail, info); 236 } 237 238 g_free(sn_tab); 239 *p_list = head; 240 return 0; 241 } 242 243 /** 244 * bdrv_query_image_info: 245 * @bs: block device to examine 246 * @p_info: location to store image information 247 * @errp: location to store error information 248 * 249 * Store "flat" image information in @p_info. 250 * 251 * "Flat" means it does *not* query backing image information, 252 * i.e. (*pinfo)->has_backing_image will be set to false and 253 * (*pinfo)->backing_image to NULL even when the image does in fact have 254 * a backing image. 255 * 256 * @p_info will be set only on success. On error, store error in @errp. 257 */ 258 void bdrv_query_image_info(BlockDriverState *bs, 259 ImageInfo **p_info, 260 Error **errp) 261 { 262 int64_t size; 263 const char *backing_filename; 264 BlockDriverInfo bdi; 265 int ret; 266 Error *err = NULL; 267 ImageInfo *info; 268 269 aio_context_acquire(bdrv_get_aio_context(bs)); 270 271 size = bdrv_getlength(bs); 272 if (size < 0) { 273 error_setg_errno(errp, -size, "Can't get image size '%s'", 274 bs->exact_filename); 275 goto out; 276 } 277 278 bdrv_refresh_filename(bs); 279 280 info = g_new0(ImageInfo, 1); 281 info->filename = g_strdup(bs->filename); 282 info->format = g_strdup(bdrv_get_format_name(bs)); 283 info->virtual_size = size; 284 info->actual_size = bdrv_get_allocated_file_size(bs); 285 info->has_actual_size = info->actual_size >= 0; 286 if (bs->encrypted) { 287 info->encrypted = true; 288 info->has_encrypted = true; 289 } 290 if (bdrv_get_info(bs, &bdi) >= 0) { 291 if (bdi.cluster_size != 0) { 292 info->cluster_size = bdi.cluster_size; 293 info->has_cluster_size = true; 294 } 295 info->dirty_flag = bdi.is_dirty; 296 info->has_dirty_flag = true; 297 } 298 info->format_specific = bdrv_get_specific_info(bs, &err); 299 if (err) { 300 error_propagate(errp, err); 301 qapi_free_ImageInfo(info); 302 goto out; 303 } 304 info->has_format_specific = info->format_specific != NULL; 305 306 backing_filename = bs->backing_file; 307 if (backing_filename[0] != '\0') { 308 char *backing_filename2; 309 310 info->backing_filename = g_strdup(backing_filename); 311 info->has_backing_filename = true; 312 backing_filename2 = bdrv_get_full_backing_filename(bs, NULL); 313 314 /* Always report the full_backing_filename if present, even if it's the 315 * same as backing_filename. That they are same is useful info. */ 316 if (backing_filename2) { 317 info->full_backing_filename = g_strdup(backing_filename2); 318 info->has_full_backing_filename = true; 319 } 320 321 if (bs->backing_format[0]) { 322 info->backing_filename_format = g_strdup(bs->backing_format); 323 info->has_backing_filename_format = true; 324 } 325 g_free(backing_filename2); 326 } 327 328 ret = bdrv_query_snapshot_info_list(bs, &info->snapshots, &err); 329 switch (ret) { 330 case 0: 331 if (info->snapshots) { 332 info->has_snapshots = true; 333 } 334 break; 335 /* recoverable error */ 336 case -ENOMEDIUM: 337 case -ENOTSUP: 338 error_free(err); 339 break; 340 default: 341 error_propagate(errp, err); 342 qapi_free_ImageInfo(info); 343 goto out; 344 } 345 346 *p_info = info; 347 348 out: 349 aio_context_release(bdrv_get_aio_context(bs)); 350 } 351 352 /* @p_info will be set only on success. */ 353 static void bdrv_query_info(BlockBackend *blk, BlockInfo **p_info, 354 Error **errp) 355 { 356 BlockInfo *info = g_malloc0(sizeof(*info)); 357 BlockDriverState *bs = blk_bs(blk); 358 char *qdev; 359 360 /* Skip automatically inserted nodes that the user isn't aware of */ 361 bs = bdrv_skip_implicit_filters(bs); 362 363 info->device = g_strdup(blk_name(blk)); 364 info->type = g_strdup("unknown"); 365 info->locked = blk_dev_is_medium_locked(blk); 366 info->removable = blk_dev_has_removable_media(blk); 367 368 qdev = blk_get_attached_dev_id(blk); 369 if (qdev && *qdev) { 370 info->has_qdev = true; 371 info->qdev = qdev; 372 } else { 373 g_free(qdev); 374 } 375 376 if (blk_dev_has_tray(blk)) { 377 info->has_tray_open = true; 378 info->tray_open = blk_dev_is_tray_open(blk); 379 } 380 381 if (blk_iostatus_is_enabled(blk)) { 382 info->has_io_status = true; 383 info->io_status = blk_iostatus(blk); 384 } 385 386 if (bs && bs->drv) { 387 info->has_inserted = true; 388 info->inserted = bdrv_block_device_info(blk, bs, false, errp); 389 if (info->inserted == NULL) { 390 goto err; 391 } 392 } 393 394 *p_info = info; 395 return; 396 397 err: 398 qapi_free_BlockInfo(info); 399 } 400 401 static uint64List *uint64_list(uint64_t *list, int size) 402 { 403 int i; 404 uint64List *out_list = NULL; 405 uint64List **tail = &out_list; 406 407 for (i = 0; i < size; i++) { 408 QAPI_LIST_APPEND(tail, list[i]); 409 } 410 411 return out_list; 412 } 413 414 static void bdrv_latency_histogram_stats(BlockLatencyHistogram *hist, 415 bool *not_null, 416 BlockLatencyHistogramInfo **info) 417 { 418 *not_null = hist->bins != NULL; 419 if (*not_null) { 420 *info = g_new0(BlockLatencyHistogramInfo, 1); 421 422 (*info)->boundaries = uint64_list(hist->boundaries, hist->nbins - 1); 423 (*info)->bins = uint64_list(hist->bins, hist->nbins); 424 } 425 } 426 427 static void bdrv_query_blk_stats(BlockDeviceStats *ds, BlockBackend *blk) 428 { 429 BlockAcctStats *stats = blk_get_stats(blk); 430 BlockAcctTimedStats *ts = NULL; 431 432 ds->rd_bytes = stats->nr_bytes[BLOCK_ACCT_READ]; 433 ds->wr_bytes = stats->nr_bytes[BLOCK_ACCT_WRITE]; 434 ds->unmap_bytes = stats->nr_bytes[BLOCK_ACCT_UNMAP]; 435 ds->rd_operations = stats->nr_ops[BLOCK_ACCT_READ]; 436 ds->wr_operations = stats->nr_ops[BLOCK_ACCT_WRITE]; 437 ds->unmap_operations = stats->nr_ops[BLOCK_ACCT_UNMAP]; 438 439 ds->failed_rd_operations = stats->failed_ops[BLOCK_ACCT_READ]; 440 ds->failed_wr_operations = stats->failed_ops[BLOCK_ACCT_WRITE]; 441 ds->failed_flush_operations = stats->failed_ops[BLOCK_ACCT_FLUSH]; 442 ds->failed_unmap_operations = stats->failed_ops[BLOCK_ACCT_UNMAP]; 443 444 ds->invalid_rd_operations = stats->invalid_ops[BLOCK_ACCT_READ]; 445 ds->invalid_wr_operations = stats->invalid_ops[BLOCK_ACCT_WRITE]; 446 ds->invalid_flush_operations = 447 stats->invalid_ops[BLOCK_ACCT_FLUSH]; 448 ds->invalid_unmap_operations = stats->invalid_ops[BLOCK_ACCT_UNMAP]; 449 450 ds->rd_merged = stats->merged[BLOCK_ACCT_READ]; 451 ds->wr_merged = stats->merged[BLOCK_ACCT_WRITE]; 452 ds->unmap_merged = stats->merged[BLOCK_ACCT_UNMAP]; 453 ds->flush_operations = stats->nr_ops[BLOCK_ACCT_FLUSH]; 454 ds->wr_total_time_ns = stats->total_time_ns[BLOCK_ACCT_WRITE]; 455 ds->rd_total_time_ns = stats->total_time_ns[BLOCK_ACCT_READ]; 456 ds->flush_total_time_ns = stats->total_time_ns[BLOCK_ACCT_FLUSH]; 457 ds->unmap_total_time_ns = stats->total_time_ns[BLOCK_ACCT_UNMAP]; 458 459 ds->has_idle_time_ns = stats->last_access_time_ns > 0; 460 if (ds->has_idle_time_ns) { 461 ds->idle_time_ns = block_acct_idle_time_ns(stats); 462 } 463 464 ds->account_invalid = stats->account_invalid; 465 ds->account_failed = stats->account_failed; 466 467 while ((ts = block_acct_interval_next(stats, ts))) { 468 BlockDeviceTimedStats *dev_stats = g_malloc0(sizeof(*dev_stats)); 469 470 TimedAverage *rd = &ts->latency[BLOCK_ACCT_READ]; 471 TimedAverage *wr = &ts->latency[BLOCK_ACCT_WRITE]; 472 TimedAverage *fl = &ts->latency[BLOCK_ACCT_FLUSH]; 473 474 dev_stats->interval_length = ts->interval_length; 475 476 dev_stats->min_rd_latency_ns = timed_average_min(rd); 477 dev_stats->max_rd_latency_ns = timed_average_max(rd); 478 dev_stats->avg_rd_latency_ns = timed_average_avg(rd); 479 480 dev_stats->min_wr_latency_ns = timed_average_min(wr); 481 dev_stats->max_wr_latency_ns = timed_average_max(wr); 482 dev_stats->avg_wr_latency_ns = timed_average_avg(wr); 483 484 dev_stats->min_flush_latency_ns = timed_average_min(fl); 485 dev_stats->max_flush_latency_ns = timed_average_max(fl); 486 dev_stats->avg_flush_latency_ns = timed_average_avg(fl); 487 488 dev_stats->avg_rd_queue_depth = 489 block_acct_queue_depth(ts, BLOCK_ACCT_READ); 490 dev_stats->avg_wr_queue_depth = 491 block_acct_queue_depth(ts, BLOCK_ACCT_WRITE); 492 493 QAPI_LIST_PREPEND(ds->timed_stats, dev_stats); 494 } 495 496 bdrv_latency_histogram_stats(&stats->latency_histogram[BLOCK_ACCT_READ], 497 &ds->has_rd_latency_histogram, 498 &ds->rd_latency_histogram); 499 bdrv_latency_histogram_stats(&stats->latency_histogram[BLOCK_ACCT_WRITE], 500 &ds->has_wr_latency_histogram, 501 &ds->wr_latency_histogram); 502 bdrv_latency_histogram_stats(&stats->latency_histogram[BLOCK_ACCT_FLUSH], 503 &ds->has_flush_latency_histogram, 504 &ds->flush_latency_histogram); 505 } 506 507 static BlockStats *bdrv_query_bds_stats(BlockDriverState *bs, 508 bool blk_level) 509 { 510 BdrvChild *parent_child; 511 BlockDriverState *filter_or_cow_bs; 512 BlockStats *s = NULL; 513 514 s = g_malloc0(sizeof(*s)); 515 s->stats = g_malloc0(sizeof(*s->stats)); 516 517 if (!bs) { 518 return s; 519 } 520 521 /* Skip automatically inserted nodes that the user isn't aware of in 522 * a BlockBackend-level command. Stay at the exact node for a node-level 523 * command. */ 524 if (blk_level) { 525 bs = bdrv_skip_implicit_filters(bs); 526 } 527 528 if (bdrv_get_node_name(bs)[0]) { 529 s->has_node_name = true; 530 s->node_name = g_strdup(bdrv_get_node_name(bs)); 531 } 532 533 s->stats->wr_highest_offset = stat64_get(&bs->wr_highest_offset); 534 535 s->driver_specific = bdrv_get_specific_stats(bs); 536 if (s->driver_specific) { 537 s->has_driver_specific = true; 538 } 539 540 parent_child = bdrv_primary_child(bs); 541 if (!parent_child || 542 !(parent_child->role & (BDRV_CHILD_DATA | BDRV_CHILD_FILTERED))) 543 { 544 BdrvChild *c; 545 546 /* 547 * Look for a unique data-storing child. We do not need to look for 548 * filtered children, as there would be only one and it would have been 549 * the primary child. 550 */ 551 parent_child = NULL; 552 QLIST_FOREACH(c, &bs->children, next) { 553 if (c->role & BDRV_CHILD_DATA) { 554 if (parent_child) { 555 /* 556 * There are multiple data-storing children and we cannot 557 * choose between them. 558 */ 559 parent_child = NULL; 560 break; 561 } 562 parent_child = c; 563 } 564 } 565 } 566 if (parent_child) { 567 s->has_parent = true; 568 s->parent = bdrv_query_bds_stats(parent_child->bs, blk_level); 569 } 570 571 filter_or_cow_bs = bdrv_filter_or_cow_bs(bs); 572 if (blk_level && filter_or_cow_bs) { 573 /* 574 * Put any filtered or COW child here (for backwards 575 * compatibility to when we put bs0->backing here, which might 576 * be either) 577 */ 578 s->has_backing = true; 579 s->backing = bdrv_query_bds_stats(filter_or_cow_bs, blk_level); 580 } 581 582 return s; 583 } 584 585 BlockInfoList *qmp_query_block(Error **errp) 586 { 587 BlockInfoList *head = NULL, **p_next = &head; 588 BlockBackend *blk; 589 Error *local_err = NULL; 590 591 for (blk = blk_all_next(NULL); blk; blk = blk_all_next(blk)) { 592 BlockInfoList *info; 593 594 if (!*blk_name(blk) && !blk_get_attached_dev(blk)) { 595 continue; 596 } 597 598 info = g_malloc0(sizeof(*info)); 599 bdrv_query_info(blk, &info->value, &local_err); 600 if (local_err) { 601 error_propagate(errp, local_err); 602 g_free(info); 603 qapi_free_BlockInfoList(head); 604 return NULL; 605 } 606 607 *p_next = info; 608 p_next = &info->next; 609 } 610 611 return head; 612 } 613 614 BlockStatsList *qmp_query_blockstats(bool has_query_nodes, 615 bool query_nodes, 616 Error **errp) 617 { 618 BlockStatsList *head = NULL, **tail = &head; 619 BlockBackend *blk; 620 BlockDriverState *bs; 621 622 /* Just to be safe if query_nodes is not always initialized */ 623 if (has_query_nodes && query_nodes) { 624 for (bs = bdrv_next_node(NULL); bs; bs = bdrv_next_node(bs)) { 625 AioContext *ctx = bdrv_get_aio_context(bs); 626 627 aio_context_acquire(ctx); 628 QAPI_LIST_APPEND(tail, bdrv_query_bds_stats(bs, false)); 629 aio_context_release(ctx); 630 } 631 } else { 632 for (blk = blk_all_next(NULL); blk; blk = blk_all_next(blk)) { 633 AioContext *ctx = blk_get_aio_context(blk); 634 BlockStats *s; 635 char *qdev; 636 637 if (!*blk_name(blk) && !blk_get_attached_dev(blk)) { 638 continue; 639 } 640 641 aio_context_acquire(ctx); 642 s = bdrv_query_bds_stats(blk_bs(blk), true); 643 s->has_device = true; 644 s->device = g_strdup(blk_name(blk)); 645 646 qdev = blk_get_attached_dev_id(blk); 647 if (qdev && *qdev) { 648 s->has_qdev = true; 649 s->qdev = qdev; 650 } else { 651 g_free(qdev); 652 } 653 654 bdrv_query_blk_stats(s->stats, blk); 655 aio_context_release(ctx); 656 657 QAPI_LIST_APPEND(tail, s); 658 } 659 } 660 661 return head; 662 } 663 664 void bdrv_snapshot_dump(QEMUSnapshotInfo *sn) 665 { 666 char clock_buf[128]; 667 char icount_buf[128] = {0}; 668 int64_t secs; 669 char *sizing = NULL; 670 671 if (!sn) { 672 qemu_printf("%-10s%-17s%8s%20s%13s%11s", 673 "ID", "TAG", "VM SIZE", "DATE", "VM CLOCK", "ICOUNT"); 674 } else { 675 g_autoptr(GDateTime) date = g_date_time_new_from_unix_local(sn->date_sec); 676 g_autofree char *date_buf = g_date_time_format(date, "%Y-%m-%d %H:%M:%S"); 677 678 secs = sn->vm_clock_nsec / 1000000000; 679 snprintf(clock_buf, sizeof(clock_buf), 680 "%02d:%02d:%02d.%03d", 681 (int)(secs / 3600), 682 (int)((secs / 60) % 60), 683 (int)(secs % 60), 684 (int)((sn->vm_clock_nsec / 1000000) % 1000)); 685 sizing = size_to_str(sn->vm_state_size); 686 if (sn->icount != -1ULL) { 687 snprintf(icount_buf, sizeof(icount_buf), 688 "%"PRId64, sn->icount); 689 } 690 qemu_printf("%-9s %-16s %8s%20s%13s%11s", 691 sn->id_str, sn->name, 692 sizing, 693 date_buf, 694 clock_buf, 695 icount_buf); 696 } 697 g_free(sizing); 698 } 699 700 static void dump_qdict(int indentation, QDict *dict); 701 static void dump_qlist(int indentation, QList *list); 702 703 static void dump_qobject(int comp_indent, QObject *obj) 704 { 705 switch (qobject_type(obj)) { 706 case QTYPE_QNUM: { 707 QNum *value = qobject_to(QNum, obj); 708 char *tmp = qnum_to_string(value); 709 qemu_printf("%s", tmp); 710 g_free(tmp); 711 break; 712 } 713 case QTYPE_QSTRING: { 714 QString *value = qobject_to(QString, obj); 715 qemu_printf("%s", qstring_get_str(value)); 716 break; 717 } 718 case QTYPE_QDICT: { 719 QDict *value = qobject_to(QDict, obj); 720 dump_qdict(comp_indent, value); 721 break; 722 } 723 case QTYPE_QLIST: { 724 QList *value = qobject_to(QList, obj); 725 dump_qlist(comp_indent, value); 726 break; 727 } 728 case QTYPE_QBOOL: { 729 QBool *value = qobject_to(QBool, obj); 730 qemu_printf("%s", qbool_get_bool(value) ? "true" : "false"); 731 break; 732 } 733 default: 734 abort(); 735 } 736 } 737 738 static void dump_qlist(int indentation, QList *list) 739 { 740 const QListEntry *entry; 741 int i = 0; 742 743 for (entry = qlist_first(list); entry; entry = qlist_next(entry), i++) { 744 QType type = qobject_type(entry->value); 745 bool composite = (type == QTYPE_QDICT || type == QTYPE_QLIST); 746 qemu_printf("%*s[%i]:%c", indentation * 4, "", i, 747 composite ? '\n' : ' '); 748 dump_qobject(indentation + 1, entry->value); 749 if (!composite) { 750 qemu_printf("\n"); 751 } 752 } 753 } 754 755 static void dump_qdict(int indentation, QDict *dict) 756 { 757 const QDictEntry *entry; 758 759 for (entry = qdict_first(dict); entry; entry = qdict_next(dict, entry)) { 760 QType type = qobject_type(entry->value); 761 bool composite = (type == QTYPE_QDICT || type == QTYPE_QLIST); 762 char *key = g_malloc(strlen(entry->key) + 1); 763 int i; 764 765 /* replace dashes with spaces in key (variable) names */ 766 for (i = 0; entry->key[i]; i++) { 767 key[i] = entry->key[i] == '-' ? ' ' : entry->key[i]; 768 } 769 key[i] = 0; 770 qemu_printf("%*s%s:%c", indentation * 4, "", key, 771 composite ? '\n' : ' '); 772 dump_qobject(indentation + 1, entry->value); 773 if (!composite) { 774 qemu_printf("\n"); 775 } 776 g_free(key); 777 } 778 } 779 780 void bdrv_image_info_specific_dump(ImageInfoSpecific *info_spec) 781 { 782 QObject *obj, *data; 783 Visitor *v = qobject_output_visitor_new(&obj); 784 785 visit_type_ImageInfoSpecific(v, NULL, &info_spec, &error_abort); 786 visit_complete(v, &obj); 787 data = qdict_get(qobject_to(QDict, obj), "data"); 788 dump_qobject(1, data); 789 qobject_unref(obj); 790 visit_free(v); 791 } 792 793 void bdrv_image_info_dump(ImageInfo *info) 794 { 795 char *size_buf, *dsize_buf; 796 if (!info->has_actual_size) { 797 dsize_buf = g_strdup("unavailable"); 798 } else { 799 dsize_buf = size_to_str(info->actual_size); 800 } 801 size_buf = size_to_str(info->virtual_size); 802 qemu_printf("image: %s\n" 803 "file format: %s\n" 804 "virtual size: %s (%" PRId64 " bytes)\n" 805 "disk size: %s\n", 806 info->filename, info->format, size_buf, 807 info->virtual_size, 808 dsize_buf); 809 g_free(size_buf); 810 g_free(dsize_buf); 811 812 if (info->has_encrypted && info->encrypted) { 813 qemu_printf("encrypted: yes\n"); 814 } 815 816 if (info->has_cluster_size) { 817 qemu_printf("cluster_size: %" PRId64 "\n", 818 info->cluster_size); 819 } 820 821 if (info->has_dirty_flag && info->dirty_flag) { 822 qemu_printf("cleanly shut down: no\n"); 823 } 824 825 if (info->has_backing_filename) { 826 qemu_printf("backing file: %s", info->backing_filename); 827 if (!info->has_full_backing_filename) { 828 qemu_printf(" (cannot determine actual path)"); 829 } else if (strcmp(info->backing_filename, 830 info->full_backing_filename) != 0) { 831 qemu_printf(" (actual path: %s)", info->full_backing_filename); 832 } 833 qemu_printf("\n"); 834 if (info->has_backing_filename_format) { 835 qemu_printf("backing file format: %s\n", 836 info->backing_filename_format); 837 } 838 } 839 840 if (info->has_snapshots) { 841 SnapshotInfoList *elem; 842 843 qemu_printf("Snapshot list:\n"); 844 bdrv_snapshot_dump(NULL); 845 qemu_printf("\n"); 846 847 /* Ideally bdrv_snapshot_dump() would operate on SnapshotInfoList but 848 * we convert to the block layer's native QEMUSnapshotInfo for now. 849 */ 850 for (elem = info->snapshots; elem; elem = elem->next) { 851 QEMUSnapshotInfo sn = { 852 .vm_state_size = elem->value->vm_state_size, 853 .date_sec = elem->value->date_sec, 854 .date_nsec = elem->value->date_nsec, 855 .vm_clock_nsec = elem->value->vm_clock_sec * 1000000000ULL + 856 elem->value->vm_clock_nsec, 857 .icount = elem->value->has_icount ? 858 elem->value->icount : -1ULL, 859 }; 860 861 pstrcpy(sn.id_str, sizeof(sn.id_str), elem->value->id); 862 pstrcpy(sn.name, sizeof(sn.name), elem->value->name); 863 bdrv_snapshot_dump(&sn); 864 qemu_printf("\n"); 865 } 866 } 867 868 if (info->has_format_specific) { 869 qemu_printf("Format specific information:\n"); 870 bdrv_image_info_specific_dump(info->format_specific); 871 } 872 }