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2619 asynchronous destruction of ZFS file systems
2747 SPA versioning with zfs feature flags
Reviewed by: Matt Ahrens <mahrens@delphix.com>
Reviewed by: George Wilson <gwilson@delphix.com>
Reviewed by: Richard Lowe <richlowe@richlowe.net>
Reviewed by: Dan Kruchinin <dan.kruchinin@gmail.com>
Approved by: Dan McDonald <danmcd@nexenta.com>
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--- old/usr/src/cmd/mdb/common/modules/zfs/zfs.c
+++ new/usr/src/cmd/mdb/common/modules/zfs/zfs.c
1 1 /*
2 2 * CDDL HEADER START
3 3 *
4 4 * The contents of this file are subject to the terms of the
5 5 * Common Development and Distribution License (the "License").
6 6 * You may not use this file except in compliance with the License.
7 7 *
8 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 9 * or http://www.opensolaris.org/os/licensing.
10 10 * See the License for the specific language governing permissions
11 11 * and limitations under the License.
12 12 *
13 13 * When distributing Covered Code, include this CDDL HEADER in each
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13 lines elided |
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14 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 15 * If applicable, add the following below this CDDL HEADER, with the
16 16 * fields enclosed by brackets "[]" replaced with your own identifying
17 17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 18 *
19 19 * CDDL HEADER END
20 20 */
21 21 /*
22 22 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
23 23 * Copyright 2011 Nexenta Systems, Inc. All rights reserved.
24 + * Copyright (c) 2012 by Delphix. All rights reserved.
24 25 */
25 26
26 27 /* Portions Copyright 2010 Robert Milkowski */
27 28
28 29 #include <mdb/mdb_ctf.h>
29 30 #include <sys/zfs_context.h>
30 31 #include <sys/mdb_modapi.h>
31 32 #include <sys/dbuf.h>
32 33 #include <sys/dmu_objset.h>
33 34 #include <sys/dsl_dir.h>
34 35 #include <sys/dsl_pool.h>
35 36 #include <sys/metaslab_impl.h>
36 37 #include <sys/space_map.h>
37 38 #include <sys/list.h>
38 39 #include <sys/spa_impl.h>
39 40 #include <sys/vdev_impl.h>
40 41 #include <sys/zap_leaf.h>
41 42 #include <sys/zap_impl.h>
42 43 #include <ctype.h>
43 44 #include <sys/zfs_acl.h>
44 45 #include <sys/sa_impl.h>
45 46
46 47 #ifdef _KERNEL
47 48 #define ZFS_OBJ_NAME "zfs"
48 49 #else
49 50 #define ZFS_OBJ_NAME "libzpool.so.1"
50 51 #endif
51 52
52 53 #ifndef _KERNEL
53 54 int aok;
54 55 #endif
55 56
56 57 static int
57 58 getmember(uintptr_t addr, const char *type, mdb_ctf_id_t *idp,
58 59 const char *member, int len, void *buf)
59 60 {
60 61 mdb_ctf_id_t id;
61 62 ulong_t off;
62 63 char name[64];
63 64
64 65 if (idp == NULL) {
65 66 if (mdb_ctf_lookup_by_name(type, &id) == -1) {
66 67 mdb_warn("couldn't find type %s", type);
67 68 return (DCMD_ERR);
68 69 }
69 70 idp = &id;
70 71 } else {
71 72 type = name;
72 73 mdb_ctf_type_name(*idp, name, sizeof (name));
73 74 }
74 75
75 76 if (mdb_ctf_offsetof(*idp, member, &off) == -1) {
76 77 mdb_warn("couldn't find member %s of type %s\n", member, type);
77 78 return (DCMD_ERR);
78 79 }
79 80 if (off % 8 != 0) {
80 81 mdb_warn("member %s of type %s is unsupported bitfield",
81 82 member, type);
82 83 return (DCMD_ERR);
83 84 }
84 85 off /= 8;
85 86
86 87 if (mdb_vread(buf, len, addr + off) == -1) {
87 88 mdb_warn("failed to read %s from %s at %p",
88 89 member, type, addr + off);
89 90 return (DCMD_ERR);
90 91 }
91 92 /* mdb_warn("read %s from %s at %p+%llx\n", member, type, addr, off); */
92 93
93 94 return (0);
94 95 }
95 96
96 97 #define GETMEMB(addr, type, member, dest) \
97 98 getmember(addr, #type, NULL, #member, sizeof (dest), &(dest))
98 99
99 100 #define GETMEMBID(addr, ctfid, member, dest) \
100 101 getmember(addr, NULL, ctfid, #member, sizeof (dest), &(dest))
101 102
102 103 static int
103 104 getrefcount(uintptr_t addr, mdb_ctf_id_t *id,
104 105 const char *member, uint64_t *rc)
105 106 {
106 107 static int gotid;
107 108 static mdb_ctf_id_t rc_id;
108 109 ulong_t off;
109 110
110 111 if (!gotid) {
111 112 if (mdb_ctf_lookup_by_name("struct refcount", &rc_id) == -1) {
112 113 mdb_warn("couldn't find struct refcount");
113 114 return (DCMD_ERR);
114 115 }
115 116 gotid = TRUE;
116 117 }
117 118
118 119 if (mdb_ctf_offsetof(*id, member, &off) == -1) {
119 120 char name[64];
120 121 mdb_ctf_type_name(*id, name, sizeof (name));
121 122 mdb_warn("couldn't find member %s of type %s\n", member, name);
122 123 return (DCMD_ERR);
123 124 }
124 125 off /= 8;
125 126
126 127 return (GETMEMBID(addr + off, &rc_id, rc_count, *rc));
127 128 }
128 129
129 130 static boolean_t
130 131 strisprint(const char *cp)
131 132 {
132 133 for (; *cp; cp++) {
133 134 if (!isprint(*cp))
134 135 return (B_FALSE);
135 136 }
136 137 return (B_TRUE);
137 138 }
138 139
139 140 static int verbose;
140 141
141 142 static int
142 143 freelist_walk_init(mdb_walk_state_t *wsp)
143 144 {
144 145 if (wsp->walk_addr == NULL) {
145 146 mdb_warn("must supply starting address\n");
146 147 return (WALK_ERR);
147 148 }
148 149
149 150 wsp->walk_data = 0; /* Index into the freelist */
150 151 return (WALK_NEXT);
151 152 }
152 153
153 154 static int
154 155 freelist_walk_step(mdb_walk_state_t *wsp)
155 156 {
156 157 uint64_t entry;
157 158 uintptr_t number = (uintptr_t)wsp->walk_data;
158 159 char *ddata[] = { "ALLOC", "FREE", "CONDENSE", "INVALID",
159 160 "INVALID", "INVALID", "INVALID", "INVALID" };
160 161 int mapshift = SPA_MINBLOCKSHIFT;
161 162
162 163 if (mdb_vread(&entry, sizeof (entry), wsp->walk_addr) == -1) {
163 164 mdb_warn("failed to read freelist entry %p", wsp->walk_addr);
164 165 return (WALK_DONE);
165 166 }
166 167 wsp->walk_addr += sizeof (entry);
167 168 wsp->walk_data = (void *)(number + 1);
168 169
169 170 if (SM_DEBUG_DECODE(entry)) {
170 171 mdb_printf("DEBUG: %3u %10s: txg=%llu pass=%llu\n",
171 172 number,
172 173 ddata[SM_DEBUG_ACTION_DECODE(entry)],
173 174 SM_DEBUG_TXG_DECODE(entry),
174 175 SM_DEBUG_SYNCPASS_DECODE(entry));
175 176 } else {
176 177 mdb_printf("Entry: %3u offsets=%08llx-%08llx type=%c "
177 178 "size=%06llx", number,
178 179 SM_OFFSET_DECODE(entry) << mapshift,
179 180 (SM_OFFSET_DECODE(entry) + SM_RUN_DECODE(entry)) <<
180 181 mapshift,
181 182 SM_TYPE_DECODE(entry) == SM_ALLOC ? 'A' : 'F',
182 183 SM_RUN_DECODE(entry) << mapshift);
183 184 if (verbose)
184 185 mdb_printf(" (raw=%012llx)\n", entry);
185 186 mdb_printf("\n");
186 187 }
187 188 return (WALK_NEXT);
188 189 }
189 190
190 191
191 192 static int
192 193 dataset_name(uintptr_t addr, char *buf)
193 194 {
194 195 static int gotid;
195 196 static mdb_ctf_id_t dd_id;
196 197 uintptr_t dd_parent;
197 198 char dd_myname[MAXNAMELEN];
198 199
199 200 if (!gotid) {
200 201 if (mdb_ctf_lookup_by_name("struct dsl_dir",
201 202 &dd_id) == -1) {
202 203 mdb_warn("couldn't find struct dsl_dir");
203 204 return (DCMD_ERR);
204 205 }
205 206 gotid = TRUE;
206 207 }
207 208 if (GETMEMBID(addr, &dd_id, dd_parent, dd_parent) ||
208 209 GETMEMBID(addr, &dd_id, dd_myname, dd_myname)) {
209 210 return (DCMD_ERR);
210 211 }
211 212
212 213 if (dd_parent) {
213 214 if (dataset_name(dd_parent, buf))
214 215 return (DCMD_ERR);
215 216 strcat(buf, "/");
216 217 }
217 218
218 219 if (dd_myname[0])
219 220 strcat(buf, dd_myname);
220 221 else
221 222 strcat(buf, "???");
222 223
223 224 return (0);
224 225 }
225 226
226 227 static int
227 228 objset_name(uintptr_t addr, char *buf)
228 229 {
229 230 static int gotid;
230 231 static mdb_ctf_id_t os_id, ds_id;
231 232 uintptr_t os_dsl_dataset;
232 233 char ds_snapname[MAXNAMELEN];
233 234 uintptr_t ds_dir;
234 235
235 236 buf[0] = '\0';
236 237
237 238 if (!gotid) {
238 239 if (mdb_ctf_lookup_by_name("struct objset",
239 240 &os_id) == -1) {
240 241 mdb_warn("couldn't find struct objset");
241 242 return (DCMD_ERR);
242 243 }
243 244 if (mdb_ctf_lookup_by_name("struct dsl_dataset",
244 245 &ds_id) == -1) {
245 246 mdb_warn("couldn't find struct dsl_dataset");
246 247 return (DCMD_ERR);
247 248 }
248 249
249 250 gotid = TRUE;
250 251 }
251 252
252 253 if (GETMEMBID(addr, &os_id, os_dsl_dataset, os_dsl_dataset))
253 254 return (DCMD_ERR);
254 255
255 256 if (os_dsl_dataset == 0) {
256 257 strcat(buf, "mos");
257 258 return (0);
258 259 }
259 260
260 261 if (GETMEMBID(os_dsl_dataset, &ds_id, ds_snapname, ds_snapname) ||
261 262 GETMEMBID(os_dsl_dataset, &ds_id, ds_dir, ds_dir)) {
262 263 return (DCMD_ERR);
263 264 }
264 265
265 266 if (ds_dir && dataset_name(ds_dir, buf))
266 267 return (DCMD_ERR);
267 268
268 269 if (ds_snapname[0]) {
269 270 strcat(buf, "@");
270 271 strcat(buf, ds_snapname);
271 272 }
272 273 return (0);
273 274 }
274 275
275 276 static void
276 277 enum_lookup(char *out, size_t size, mdb_ctf_id_t id, int val,
277 278 const char *prefix)
278 279 {
279 280 const char *cp;
280 281 size_t len = strlen(prefix);
281 282
282 283 if ((cp = mdb_ctf_enum_name(id, val)) != NULL) {
283 284 if (strncmp(cp, prefix, len) == 0)
284 285 cp += len;
285 286 (void) strncpy(out, cp, size);
286 287 } else {
287 288 mdb_snprintf(out, size, "? (%d)", val);
288 289 }
289 290 }
290 291
291 292 /* ARGSUSED */
292 293 static int
293 294 zfs_params(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
294 295 {
295 296 /*
296 297 * This table can be approximately generated by running:
297 298 * egrep "^[a-z0-9_]+ [a-z0-9_]+( =.*)?;" *.c | cut -d ' ' -f 2
298 299 */
299 300 static const char *params[] = {
300 301 "arc_reduce_dnlc_percent",
301 302 "zfs_arc_max",
302 303 "zfs_arc_min",
303 304 "arc_shrink_shift",
304 305 "zfs_mdcomp_disable",
305 306 "zfs_prefetch_disable",
306 307 "zfetch_max_streams",
307 308 "zfetch_min_sec_reap",
308 309 "zfetch_block_cap",
309 310 "zfetch_array_rd_sz",
310 311 "zfs_default_bs",
311 312 "zfs_default_ibs",
312 313 "metaslab_aliquot",
313 314 "reference_tracking_enable",
314 315 "reference_history",
315 316 "spa_max_replication_override",
316 317 "spa_mode_global",
317 318 "zfs_flags",
318 319 "zfs_txg_synctime_ms",
319 320 "zfs_txg_timeout",
320 321 "zfs_write_limit_min",
321 322 "zfs_write_limit_max",
322 323 "zfs_write_limit_shift",
323 324 "zfs_write_limit_override",
324 325 "zfs_no_write_throttle",
325 326 "zfs_vdev_cache_max",
326 327 "zfs_vdev_cache_size",
327 328 "zfs_vdev_cache_bshift",
328 329 "vdev_mirror_shift",
329 330 "zfs_vdev_max_pending",
330 331 "zfs_vdev_min_pending",
331 332 "zfs_scrub_limit",
332 333 "zfs_no_scrub_io",
333 334 "zfs_no_scrub_prefetch",
334 335 "zfs_vdev_time_shift",
335 336 "zfs_vdev_ramp_rate",
336 337 "zfs_vdev_aggregation_limit",
337 338 "fzap_default_block_shift",
338 339 "zfs_immediate_write_sz",
339 340 "zfs_read_chunk_size",
340 341 "zfs_nocacheflush",
341 342 "zil_replay_disable",
342 343 "metaslab_gang_bang",
343 344 "metaslab_df_alloc_threshold",
344 345 "metaslab_df_free_pct",
345 346 "zio_injection_enabled",
346 347 "zvol_immediate_write_sz",
347 348 };
348 349
349 350 for (int i = 0; i < sizeof (params) / sizeof (params[0]); i++) {
350 351 int sz;
351 352 uint64_t val64;
352 353 uint32_t *val32p = (uint32_t *)&val64;
353 354
354 355 sz = mdb_readvar(&val64, params[i]);
355 356 if (sz == 4) {
356 357 mdb_printf("%s = 0x%x\n", params[i], *val32p);
357 358 } else if (sz == 8) {
358 359 mdb_printf("%s = 0x%llx\n", params[i], val64);
359 360 } else {
360 361 mdb_warn("variable %s not found", params[i]);
361 362 }
362 363 }
363 364
364 365 return (DCMD_OK);
365 366 }
366 367
367 368 /* ARGSUSED */
368 369 static int
369 370 blkptr(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
370 371 {
371 372 mdb_ctf_id_t type_enum, checksum_enum, compress_enum;
372 373 char type[80], checksum[80], compress[80];
373 374 blkptr_t blk, *bp = &blk;
374 375 char buf[BP_SPRINTF_LEN];
375 376
376 377 if (mdb_vread(&blk, sizeof (blkptr_t), addr) == -1) {
377 378 mdb_warn("failed to read blkptr_t");
378 379 return (DCMD_ERR);
379 380 }
380 381
381 382 if (mdb_ctf_lookup_by_name("enum dmu_object_type", &type_enum) == -1 ||
382 383 mdb_ctf_lookup_by_name("enum zio_checksum", &checksum_enum) == -1 ||
383 384 mdb_ctf_lookup_by_name("enum zio_compress", &compress_enum) == -1) {
384 385 mdb_warn("Could not find blkptr enumerated types");
385 386 return (DCMD_ERR);
386 387 }
387 388
388 389 enum_lookup(type, sizeof (type), type_enum,
389 390 BP_GET_TYPE(bp), "DMU_OT_");
390 391 enum_lookup(checksum, sizeof (checksum), checksum_enum,
391 392 BP_GET_CHECKSUM(bp), "ZIO_CHECKSUM_");
392 393 enum_lookup(compress, sizeof (compress), compress_enum,
393 394 BP_GET_COMPRESS(bp), "ZIO_COMPRESS_");
394 395
395 396 SPRINTF_BLKPTR(mdb_snprintf, '\n', buf, bp, type, checksum, compress);
396 397
397 398 mdb_printf("%s\n", buf);
398 399
399 400 return (DCMD_OK);
400 401 }
401 402
402 403 /* ARGSUSED */
403 404 static int
404 405 dbuf(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
405 406 {
406 407 mdb_ctf_id_t id;
407 408 dmu_buf_t db;
408 409 uintptr_t objset;
409 410 uint8_t level;
410 411 uint64_t blkid;
411 412 uint64_t holds;
412 413 char objectname[32];
413 414 char blkidname[32];
414 415 char path[MAXNAMELEN];
415 416
416 417 if (DCMD_HDRSPEC(flags)) {
417 418 mdb_printf(" addr object lvl blkid holds os\n");
418 419 }
419 420
420 421 if (mdb_ctf_lookup_by_name("struct dmu_buf_impl", &id) == -1) {
421 422 mdb_warn("couldn't find struct dmu_buf_impl_t");
422 423 return (DCMD_ERR);
423 424 }
424 425
425 426 if (GETMEMBID(addr, &id, db_objset, objset) ||
426 427 GETMEMBID(addr, &id, db, db) ||
427 428 GETMEMBID(addr, &id, db_level, level) ||
428 429 GETMEMBID(addr, &id, db_blkid, blkid)) {
429 430 return (WALK_ERR);
430 431 }
431 432
432 433 if (getrefcount(addr, &id, "db_holds", &holds)) {
433 434 return (WALK_ERR);
434 435 }
435 436
436 437 if (db.db_object == DMU_META_DNODE_OBJECT)
437 438 (void) strcpy(objectname, "mdn");
438 439 else
439 440 (void) mdb_snprintf(objectname, sizeof (objectname), "%llx",
440 441 (u_longlong_t)db.db_object);
441 442
442 443 if (blkid == DMU_BONUS_BLKID)
443 444 (void) strcpy(blkidname, "bonus");
444 445 else
445 446 (void) mdb_snprintf(blkidname, sizeof (blkidname), "%llx",
446 447 (u_longlong_t)blkid);
447 448
448 449 if (objset_name(objset, path)) {
449 450 return (WALK_ERR);
450 451 }
451 452
452 453 mdb_printf("%p %8s %1u %9s %2llu %s\n",
453 454 addr, objectname, level, blkidname, holds, path);
454 455
455 456 return (DCMD_OK);
456 457 }
457 458
458 459 /* ARGSUSED */
459 460 static int
460 461 dbuf_stats(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
461 462 {
462 463 #define HISTOSZ 32
463 464 uintptr_t dbp;
464 465 dmu_buf_impl_t db;
465 466 dbuf_hash_table_t ht;
466 467 uint64_t bucket, ndbufs;
467 468 uint64_t histo[HISTOSZ];
468 469 uint64_t histo2[HISTOSZ];
469 470 int i, maxidx;
470 471
471 472 if (mdb_readvar(&ht, "dbuf_hash_table") == -1) {
472 473 mdb_warn("failed to read 'dbuf_hash_table'");
473 474 return (DCMD_ERR);
474 475 }
475 476
476 477 for (i = 0; i < HISTOSZ; i++) {
477 478 histo[i] = 0;
478 479 histo2[i] = 0;
479 480 }
480 481
481 482 ndbufs = 0;
482 483 for (bucket = 0; bucket < ht.hash_table_mask+1; bucket++) {
483 484 int len;
484 485
485 486 if (mdb_vread(&dbp, sizeof (void *),
486 487 (uintptr_t)(ht.hash_table+bucket)) == -1) {
487 488 mdb_warn("failed to read hash bucket %u at %p",
488 489 bucket, ht.hash_table+bucket);
489 490 return (DCMD_ERR);
490 491 }
491 492
492 493 len = 0;
493 494 while (dbp != 0) {
494 495 if (mdb_vread(&db, sizeof (dmu_buf_impl_t),
495 496 dbp) == -1) {
496 497 mdb_warn("failed to read dbuf at %p", dbp);
497 498 return (DCMD_ERR);
498 499 }
499 500 dbp = (uintptr_t)db.db_hash_next;
500 501 for (i = MIN(len, HISTOSZ - 1); i >= 0; i--)
501 502 histo2[i]++;
502 503 len++;
503 504 ndbufs++;
504 505 }
505 506
506 507 if (len >= HISTOSZ)
507 508 len = HISTOSZ-1;
508 509 histo[len]++;
509 510 }
510 511
511 512 mdb_printf("hash table has %llu buckets, %llu dbufs "
512 513 "(avg %llu buckets/dbuf)\n",
513 514 ht.hash_table_mask+1, ndbufs,
514 515 (ht.hash_table_mask+1)/ndbufs);
515 516
516 517 mdb_printf("\n");
517 518 maxidx = 0;
518 519 for (i = 0; i < HISTOSZ; i++)
519 520 if (histo[i] > 0)
520 521 maxidx = i;
521 522 mdb_printf("hash chain length number of buckets\n");
522 523 for (i = 0; i <= maxidx; i++)
523 524 mdb_printf("%u %llu\n", i, histo[i]);
524 525
525 526 mdb_printf("\n");
526 527 maxidx = 0;
527 528 for (i = 0; i < HISTOSZ; i++)
528 529 if (histo2[i] > 0)
529 530 maxidx = i;
530 531 mdb_printf("hash chain depth number of dbufs\n");
531 532 for (i = 0; i <= maxidx; i++)
532 533 mdb_printf("%u or more %llu %llu%%\n",
533 534 i, histo2[i], histo2[i]*100/ndbufs);
534 535
535 536
536 537 return (DCMD_OK);
537 538 }
538 539
539 540 #define CHAIN_END 0xffff
540 541 /*
541 542 * ::zap_leaf [-v]
542 543 *
543 544 * Print a zap_leaf_phys_t, assumed to be 16k
544 545 */
545 546 /* ARGSUSED */
546 547 static int
547 548 zap_leaf(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
548 549 {
549 550 char buf[16*1024];
550 551 int verbose = B_FALSE;
551 552 int four = B_FALSE;
552 553 zap_leaf_t l;
553 554 zap_leaf_phys_t *zlp = (void *)buf;
554 555 int i;
555 556
556 557 if (mdb_getopts(argc, argv,
557 558 'v', MDB_OPT_SETBITS, TRUE, &verbose,
558 559 '4', MDB_OPT_SETBITS, TRUE, &four,
559 560 NULL) != argc)
560 561 return (DCMD_USAGE);
561 562
562 563 l.l_phys = zlp;
563 564 l.l_bs = 14; /* assume 16k blocks */
564 565 if (four)
565 566 l.l_bs = 12;
566 567
567 568 if (!(flags & DCMD_ADDRSPEC)) {
568 569 return (DCMD_USAGE);
569 570 }
570 571
571 572 if (mdb_vread(buf, sizeof (buf), addr) == -1) {
572 573 mdb_warn("failed to read zap_leaf_phys_t at %p", addr);
573 574 return (DCMD_ERR);
574 575 }
575 576
576 577 if (zlp->l_hdr.lh_block_type != ZBT_LEAF ||
577 578 zlp->l_hdr.lh_magic != ZAP_LEAF_MAGIC) {
578 579 mdb_warn("This does not appear to be a zap_leaf_phys_t");
579 580 return (DCMD_ERR);
580 581 }
581 582
582 583 mdb_printf("zap_leaf_phys_t at %p:\n", addr);
583 584 mdb_printf(" lh_prefix_len = %u\n", zlp->l_hdr.lh_prefix_len);
584 585 mdb_printf(" lh_prefix = %llx\n", zlp->l_hdr.lh_prefix);
585 586 mdb_printf(" lh_nentries = %u\n", zlp->l_hdr.lh_nentries);
586 587 mdb_printf(" lh_nfree = %u\n", zlp->l_hdr.lh_nfree,
587 588 zlp->l_hdr.lh_nfree * 100 / (ZAP_LEAF_NUMCHUNKS(&l)));
588 589 mdb_printf(" lh_freelist = %u\n", zlp->l_hdr.lh_freelist);
589 590 mdb_printf(" lh_flags = %x (%s)\n", zlp->l_hdr.lh_flags,
590 591 zlp->l_hdr.lh_flags & ZLF_ENTRIES_CDSORTED ?
591 592 "ENTRIES_CDSORTED" : "");
592 593
593 594 if (verbose) {
594 595 mdb_printf(" hash table:\n");
595 596 for (i = 0; i < ZAP_LEAF_HASH_NUMENTRIES(&l); i++) {
596 597 if (zlp->l_hash[i] != CHAIN_END)
597 598 mdb_printf(" %u: %u\n", i, zlp->l_hash[i]);
598 599 }
599 600 }
600 601
601 602 mdb_printf(" chunks:\n");
602 603 for (i = 0; i < ZAP_LEAF_NUMCHUNKS(&l); i++) {
603 604 /* LINTED: alignment */
604 605 zap_leaf_chunk_t *zlc = &ZAP_LEAF_CHUNK(&l, i);
605 606 switch (zlc->l_entry.le_type) {
606 607 case ZAP_CHUNK_FREE:
607 608 if (verbose) {
608 609 mdb_printf(" %u: free; lf_next = %u\n",
609 610 i, zlc->l_free.lf_next);
610 611 }
611 612 break;
612 613 case ZAP_CHUNK_ENTRY:
613 614 mdb_printf(" %u: entry\n", i);
614 615 if (verbose) {
615 616 mdb_printf(" le_next = %u\n",
616 617 zlc->l_entry.le_next);
617 618 }
618 619 mdb_printf(" le_name_chunk = %u\n",
619 620 zlc->l_entry.le_name_chunk);
620 621 mdb_printf(" le_name_numints = %u\n",
621 622 zlc->l_entry.le_name_numints);
622 623 mdb_printf(" le_value_chunk = %u\n",
623 624 zlc->l_entry.le_value_chunk);
624 625 mdb_printf(" le_value_intlen = %u\n",
625 626 zlc->l_entry.le_value_intlen);
626 627 mdb_printf(" le_value_numints = %u\n",
627 628 zlc->l_entry.le_value_numints);
628 629 mdb_printf(" le_cd = %u\n",
629 630 zlc->l_entry.le_cd);
630 631 mdb_printf(" le_hash = %llx\n",
631 632 zlc->l_entry.le_hash);
632 633 break;
633 634 case ZAP_CHUNK_ARRAY:
634 635 mdb_printf(" %u: array", i);
635 636 if (strisprint((char *)zlc->l_array.la_array))
636 637 mdb_printf(" \"%s\"", zlc->l_array.la_array);
637 638 mdb_printf("\n");
638 639 if (verbose) {
639 640 int j;
640 641 mdb_printf(" ");
641 642 for (j = 0; j < ZAP_LEAF_ARRAY_BYTES; j++) {
642 643 mdb_printf("%02x ",
643 644 zlc->l_array.la_array[j]);
644 645 }
645 646 mdb_printf("\n");
646 647 }
647 648 if (zlc->l_array.la_next != CHAIN_END) {
648 649 mdb_printf(" lf_next = %u\n",
649 650 zlc->l_array.la_next);
650 651 }
651 652 break;
652 653 default:
653 654 mdb_printf(" %u: undefined type %u\n",
654 655 zlc->l_entry.le_type);
655 656 }
656 657 }
657 658
658 659 return (DCMD_OK);
659 660 }
660 661
661 662 typedef struct dbufs_data {
662 663 mdb_ctf_id_t id;
663 664 uint64_t objset;
664 665 uint64_t object;
665 666 uint64_t level;
666 667 uint64_t blkid;
667 668 char *osname;
668 669 } dbufs_data_t;
669 670
670 671 #define DBUFS_UNSET (0xbaddcafedeadbeefULL)
671 672
672 673 /* ARGSUSED */
673 674 static int
674 675 dbufs_cb(uintptr_t addr, const void *unknown, void *arg)
675 676 {
676 677 dbufs_data_t *data = arg;
677 678 uintptr_t objset;
678 679 dmu_buf_t db;
679 680 uint8_t level;
680 681 uint64_t blkid;
681 682 char osname[MAXNAMELEN];
682 683
683 684 if (GETMEMBID(addr, &data->id, db_objset, objset) ||
684 685 GETMEMBID(addr, &data->id, db, db) ||
685 686 GETMEMBID(addr, &data->id, db_level, level) ||
686 687 GETMEMBID(addr, &data->id, db_blkid, blkid)) {
687 688 return (WALK_ERR);
688 689 }
689 690
690 691 if ((data->objset == DBUFS_UNSET || data->objset == objset) &&
691 692 (data->osname == NULL || (objset_name(objset, osname) == 0 &&
692 693 strcmp(data->osname, osname) == 0)) &&
693 694 (data->object == DBUFS_UNSET || data->object == db.db_object) &&
694 695 (data->level == DBUFS_UNSET || data->level == level) &&
695 696 (data->blkid == DBUFS_UNSET || data->blkid == blkid)) {
696 697 mdb_printf("%#lr\n", addr);
697 698 }
698 699 return (WALK_NEXT);
699 700 }
700 701
701 702 /* ARGSUSED */
702 703 static int
703 704 dbufs(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
704 705 {
705 706 dbufs_data_t data;
706 707 char *object = NULL;
707 708 char *blkid = NULL;
708 709
709 710 data.objset = data.object = data.level = data.blkid = DBUFS_UNSET;
710 711 data.osname = NULL;
711 712
712 713 if (mdb_getopts(argc, argv,
713 714 'O', MDB_OPT_UINT64, &data.objset,
714 715 'n', MDB_OPT_STR, &data.osname,
715 716 'o', MDB_OPT_STR, &object,
716 717 'l', MDB_OPT_UINT64, &data.level,
717 718 'b', MDB_OPT_STR, &blkid) != argc) {
718 719 return (DCMD_USAGE);
719 720 }
720 721
721 722 if (object) {
722 723 if (strcmp(object, "mdn") == 0) {
723 724 data.object = DMU_META_DNODE_OBJECT;
724 725 } else {
725 726 data.object = mdb_strtoull(object);
726 727 }
727 728 }
728 729
729 730 if (blkid) {
730 731 if (strcmp(blkid, "bonus") == 0) {
731 732 data.blkid = DMU_BONUS_BLKID;
732 733 } else {
733 734 data.blkid = mdb_strtoull(blkid);
734 735 }
735 736 }
736 737
737 738 if (mdb_ctf_lookup_by_name("struct dmu_buf_impl", &data.id) == -1) {
738 739 mdb_warn("couldn't find struct dmu_buf_impl_t");
739 740 return (DCMD_ERR);
740 741 }
741 742
742 743 if (mdb_walk("dmu_buf_impl_t", dbufs_cb, &data) != 0) {
743 744 mdb_warn("can't walk dbufs");
744 745 return (DCMD_ERR);
745 746 }
746 747
747 748 return (DCMD_OK);
748 749 }
749 750
750 751 typedef struct abuf_find_data {
751 752 dva_t dva;
752 753 mdb_ctf_id_t id;
753 754 } abuf_find_data_t;
754 755
755 756 /* ARGSUSED */
756 757 static int
757 758 abuf_find_cb(uintptr_t addr, const void *unknown, void *arg)
758 759 {
759 760 abuf_find_data_t *data = arg;
760 761 dva_t dva;
761 762
762 763 if (GETMEMBID(addr, &data->id, b_dva, dva)) {
763 764 return (WALK_ERR);
764 765 }
765 766
766 767 if (dva.dva_word[0] == data->dva.dva_word[0] &&
767 768 dva.dva_word[1] == data->dva.dva_word[1]) {
768 769 mdb_printf("%#lr\n", addr);
769 770 }
770 771 return (WALK_NEXT);
771 772 }
772 773
773 774 /* ARGSUSED */
774 775 static int
775 776 abuf_find(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
776 777 {
777 778 abuf_find_data_t data;
778 779 GElf_Sym sym;
779 780 int i;
780 781 const char *syms[] = {
781 782 "ARC_mru",
782 783 "ARC_mru_ghost",
783 784 "ARC_mfu",
784 785 "ARC_mfu_ghost",
785 786 };
786 787
787 788 if (argc != 2)
788 789 return (DCMD_USAGE);
789 790
790 791 for (i = 0; i < 2; i ++) {
791 792 switch (argv[i].a_type) {
792 793 case MDB_TYPE_STRING:
793 794 data.dva.dva_word[i] = mdb_strtoull(argv[i].a_un.a_str);
794 795 break;
795 796 case MDB_TYPE_IMMEDIATE:
796 797 data.dva.dva_word[i] = argv[i].a_un.a_val;
797 798 break;
798 799 default:
799 800 return (DCMD_USAGE);
800 801 }
801 802 }
802 803
803 804 if (mdb_ctf_lookup_by_name("struct arc_buf_hdr", &data.id) == -1) {
804 805 mdb_warn("couldn't find struct arc_buf_hdr");
805 806 return (DCMD_ERR);
806 807 }
807 808
808 809 for (i = 0; i < sizeof (syms) / sizeof (syms[0]); i++) {
809 810 if (mdb_lookup_by_name(syms[i], &sym)) {
810 811 mdb_warn("can't find symbol %s", syms[i]);
811 812 return (DCMD_ERR);
812 813 }
813 814
814 815 if (mdb_pwalk("list", abuf_find_cb, &data, sym.st_value) != 0) {
815 816 mdb_warn("can't walk %s", syms[i]);
816 817 return (DCMD_ERR);
817 818 }
818 819 }
819 820
820 821 return (DCMD_OK);
821 822 }
822 823
823 824 /* ARGSUSED */
824 825 static int
825 826 dbgmsg_cb(uintptr_t addr, const void *unknown, void *arg)
826 827 {
827 828 static mdb_ctf_id_t id;
828 829 static boolean_t gotid;
829 830 static ulong_t off;
830 831
831 832 int *verbosep = arg;
832 833 time_t timestamp;
833 834 char buf[1024];
834 835
835 836 if (!gotid) {
836 837 if (mdb_ctf_lookup_by_name("struct zfs_dbgmsg", &id) == -1) {
837 838 mdb_warn("couldn't find struct zfs_dbgmsg");
838 839 return (WALK_ERR);
839 840 }
840 841 gotid = TRUE;
841 842 if (mdb_ctf_offsetof(id, "zdm_msg", &off) == -1) {
842 843 mdb_warn("couldn't find zdm_msg");
843 844 return (WALK_ERR);
844 845 }
845 846 off /= 8;
846 847 }
847 848
848 849
849 850 if (GETMEMBID(addr, &id, zdm_timestamp, timestamp)) {
850 851 return (WALK_ERR);
851 852 }
852 853
853 854 if (mdb_readstr(buf, sizeof (buf), addr + off) == -1) {
854 855 mdb_warn("failed to read zdm_msg at %p\n", addr + off);
855 856 return (DCMD_ERR);
856 857 }
857 858
858 859 if (*verbosep)
859 860 mdb_printf("%Y ", timestamp);
860 861
861 862 mdb_printf("%s\n", buf);
862 863
863 864 if (*verbosep)
864 865 (void) mdb_call_dcmd("whatis", addr, DCMD_ADDRSPEC, 0, NULL);
865 866
866 867 return (WALK_NEXT);
867 868 }
868 869
869 870 /* ARGSUSED */
870 871 static int
871 872 dbgmsg(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
872 873 {
873 874 GElf_Sym sym;
874 875 int verbose = FALSE;
875 876
876 877 if (mdb_getopts(argc, argv,
877 878 'v', MDB_OPT_SETBITS, TRUE, &verbose,
878 879 NULL) != argc)
879 880 return (DCMD_USAGE);
880 881
881 882 if (mdb_lookup_by_name("zfs_dbgmsgs", &sym)) {
882 883 mdb_warn("can't find zfs_dbgmsgs");
883 884 return (DCMD_ERR);
884 885 }
885 886
886 887 if (mdb_pwalk("list", dbgmsg_cb, &verbose, sym.st_value) != 0) {
887 888 mdb_warn("can't walk zfs_dbgmsgs");
888 889 return (DCMD_ERR);
889 890 }
890 891
891 892 return (DCMD_OK);
892 893 }
893 894
894 895 /*ARGSUSED*/
895 896 static int
896 897 arc_print(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
897 898 {
898 899 kstat_named_t *stats;
899 900 GElf_Sym sym;
900 901 int nstats, i;
901 902 uint_t opt_a = FALSE;
902 903 uint_t opt_b = FALSE;
903 904 uint_t shift = 0;
904 905 const char *suffix;
905 906
906 907 static const char *bytestats[] = {
907 908 "p", "c", "c_min", "c_max", "size", NULL
908 909 };
909 910
910 911 static const char *extras[] = {
911 912 "arc_no_grow", "arc_tempreserve",
912 913 "arc_meta_used", "arc_meta_limit", "arc_meta_max",
913 914 NULL
914 915 };
915 916
916 917 if (mdb_lookup_by_name("arc_stats", &sym) == -1) {
917 918 mdb_warn("failed to find 'arc_stats'");
918 919 return (DCMD_ERR);
919 920 }
920 921
921 922 stats = mdb_zalloc(sym.st_size, UM_SLEEP | UM_GC);
922 923
923 924 if (mdb_vread(stats, sym.st_size, sym.st_value) == -1) {
924 925 mdb_warn("couldn't read 'arc_stats' at %p", sym.st_value);
925 926 return (DCMD_ERR);
926 927 }
927 928
928 929 nstats = sym.st_size / sizeof (kstat_named_t);
929 930
930 931 /* NB: -a / opt_a are ignored for backwards compatability */
931 932 if (mdb_getopts(argc, argv,
932 933 'a', MDB_OPT_SETBITS, TRUE, &opt_a,
933 934 'b', MDB_OPT_SETBITS, TRUE, &opt_b,
934 935 'k', MDB_OPT_SETBITS, 10, &shift,
935 936 'm', MDB_OPT_SETBITS, 20, &shift,
936 937 'g', MDB_OPT_SETBITS, 30, &shift,
937 938 NULL) != argc)
938 939 return (DCMD_USAGE);
939 940
940 941 if (!opt_b && !shift)
941 942 shift = 20;
942 943
943 944 switch (shift) {
944 945 case 0:
945 946 suffix = "B";
946 947 break;
947 948 case 10:
948 949 suffix = "KB";
949 950 break;
950 951 case 20:
951 952 suffix = "MB";
952 953 break;
953 954 case 30:
954 955 suffix = "GB";
955 956 break;
956 957 default:
957 958 suffix = "XX";
958 959 }
959 960
960 961 for (i = 0; i < nstats; i++) {
961 962 int j;
962 963 boolean_t bytes = B_FALSE;
963 964
964 965 for (j = 0; bytestats[j]; j++) {
965 966 if (strcmp(stats[i].name, bytestats[j]) == 0) {
966 967 bytes = B_TRUE;
967 968 break;
968 969 }
969 970 }
970 971
971 972 if (bytes) {
972 973 mdb_printf("%-25s = %9llu %s\n", stats[i].name,
973 974 stats[i].value.ui64 >> shift, suffix);
974 975 } else {
975 976 mdb_printf("%-25s = %9llu\n", stats[i].name,
976 977 stats[i].value.ui64);
977 978 }
978 979 }
979 980
980 981 for (i = 0; extras[i]; i++) {
981 982 uint64_t buf;
982 983
983 984 if (mdb_lookup_by_name(extras[i], &sym) == -1) {
984 985 mdb_warn("failed to find '%s'", extras[i]);
985 986 return (DCMD_ERR);
986 987 }
987 988
988 989 if (sym.st_size != sizeof (uint64_t) &&
989 990 sym.st_size != sizeof (uint32_t)) {
990 991 mdb_warn("expected scalar for variable '%s'\n",
991 992 extras[i]);
992 993 return (DCMD_ERR);
993 994 }
994 995
995 996 if (mdb_vread(&buf, sym.st_size, sym.st_value) == -1) {
996 997 mdb_warn("couldn't read '%s'", extras[i]);
997 998 return (DCMD_ERR);
998 999 }
999 1000
1000 1001 mdb_printf("%-25s = ", extras[i]);
1001 1002
1002 1003 /* NB: all the 64-bit extras happen to be byte counts */
1003 1004 if (sym.st_size == sizeof (uint64_t))
1004 1005 mdb_printf("%9llu %s\n", buf >> shift, suffix);
1005 1006
1006 1007 if (sym.st_size == sizeof (uint32_t))
1007 1008 mdb_printf("%9d\n", *((uint32_t *)&buf));
1008 1009 }
1009 1010 return (DCMD_OK);
1010 1011 }
1011 1012
1012 1013 /*
1013 1014 * ::spa
1014 1015 *
1015 1016 * -c Print configuration information as well
1016 1017 * -v Print vdev state
1017 1018 * -e Print vdev error stats
1018 1019 *
1019 1020 * Print a summarized spa_t. When given no arguments, prints out a table of all
1020 1021 * active pools on the system.
1021 1022 */
1022 1023 /* ARGSUSED */
1023 1024 static int
1024 1025 spa_print(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
1025 1026 {
1026 1027 spa_t spa;
1027 1028 const char *statetab[] = { "ACTIVE", "EXPORTED", "DESTROYED",
1028 1029 "SPARE", "L2CACHE", "UNINIT", "UNAVAIL", "POTENTIAL" };
1029 1030 const char *state;
1030 1031 int config = FALSE;
1031 1032 int vdevs = FALSE;
1032 1033 int errors = FALSE;
1033 1034
1034 1035 if (mdb_getopts(argc, argv,
1035 1036 'c', MDB_OPT_SETBITS, TRUE, &config,
1036 1037 'v', MDB_OPT_SETBITS, TRUE, &vdevs,
1037 1038 'e', MDB_OPT_SETBITS, TRUE, &errors,
1038 1039 NULL) != argc)
1039 1040 return (DCMD_USAGE);
1040 1041
1041 1042 if (!(flags & DCMD_ADDRSPEC)) {
1042 1043 if (mdb_walk_dcmd("spa", "spa", argc, argv) == -1) {
1043 1044 mdb_warn("can't walk spa");
1044 1045 return (DCMD_ERR);
1045 1046 }
1046 1047
1047 1048 return (DCMD_OK);
1048 1049 }
1049 1050
1050 1051 if (flags & DCMD_PIPE_OUT) {
1051 1052 mdb_printf("%#lr\n", addr);
1052 1053 return (DCMD_OK);
1053 1054 }
1054 1055
1055 1056 if (DCMD_HDRSPEC(flags))
1056 1057 mdb_printf("%<u>%-?s %9s %-*s%</u>\n", "ADDR", "STATE",
1057 1058 sizeof (uintptr_t) == 4 ? 60 : 52, "NAME");
1058 1059
1059 1060 if (mdb_vread(&spa, sizeof (spa), addr) == -1) {
1060 1061 mdb_warn("failed to read spa_t at %p", addr);
1061 1062 return (DCMD_ERR);
1062 1063 }
1063 1064
1064 1065 if (spa.spa_state < 0 || spa.spa_state > POOL_STATE_UNAVAIL)
1065 1066 state = "UNKNOWN";
1066 1067 else
1067 1068 state = statetab[spa.spa_state];
1068 1069
1069 1070 mdb_printf("%0?p %9s %s\n", addr, state, spa.spa_name);
1070 1071
1071 1072 if (config) {
1072 1073 mdb_printf("\n");
1073 1074 mdb_inc_indent(4);
1074 1075 if (mdb_call_dcmd("spa_config", addr, flags, 0,
1075 1076 NULL) != DCMD_OK)
1076 1077 return (DCMD_ERR);
1077 1078 mdb_dec_indent(4);
1078 1079 }
1079 1080
1080 1081 if (vdevs || errors) {
1081 1082 mdb_arg_t v;
1082 1083
1083 1084 v.a_type = MDB_TYPE_STRING;
1084 1085 v.a_un.a_str = "-e";
1085 1086
1086 1087 mdb_printf("\n");
1087 1088 mdb_inc_indent(4);
1088 1089 if (mdb_call_dcmd("spa_vdevs", addr, flags, errors ? 1 : 0,
1089 1090 &v) != DCMD_OK)
1090 1091 return (DCMD_ERR);
1091 1092 mdb_dec_indent(4);
1092 1093 }
1093 1094
1094 1095 return (DCMD_OK);
1095 1096 }
1096 1097
1097 1098 /*
1098 1099 * ::spa_config
1099 1100 *
1100 1101 * Given a spa_t, print the configuration information stored in spa_config.
1101 1102 * Since it's just an nvlist, format it as an indented list of name=value pairs.
1102 1103 * We simply read the value of spa_config and pass off to ::nvlist.
1103 1104 */
1104 1105 /* ARGSUSED */
1105 1106 static int
1106 1107 spa_print_config(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
1107 1108 {
1108 1109 spa_t spa;
1109 1110
1110 1111 if (argc != 0 || !(flags & DCMD_ADDRSPEC))
1111 1112 return (DCMD_USAGE);
1112 1113
1113 1114 if (mdb_vread(&spa, sizeof (spa), addr) == -1) {
1114 1115 mdb_warn("failed to read spa_t at %p", addr);
1115 1116 return (DCMD_ERR);
1116 1117 }
1117 1118
1118 1119 if (spa.spa_config == NULL) {
1119 1120 mdb_printf("(none)\n");
1120 1121 return (DCMD_OK);
1121 1122 }
1122 1123
1123 1124 return (mdb_call_dcmd("nvlist", (uintptr_t)spa.spa_config, flags,
1124 1125 0, NULL));
1125 1126 }
1126 1127
1127 1128 /*
1128 1129 * ::vdev
1129 1130 *
1130 1131 * Print out a summarized vdev_t, in the following form:
1131 1132 *
1132 1133 * ADDR STATE AUX DESC
1133 1134 * fffffffbcde23df0 HEALTHY - /dev/dsk/c0t0d0
1134 1135 *
1135 1136 * If '-r' is specified, recursively visit all children.
1136 1137 *
1137 1138 * With '-e', the statistics associated with the vdev are printed as well.
1138 1139 */
1139 1140 static int
1140 1141 do_print_vdev(uintptr_t addr, int flags, int depth, int stats,
1141 1142 int recursive)
1142 1143 {
1143 1144 vdev_t vdev;
1144 1145 char desc[MAXNAMELEN];
1145 1146 int c, children;
1146 1147 uintptr_t *child;
1147 1148 const char *state, *aux;
1148 1149
1149 1150 if (mdb_vread(&vdev, sizeof (vdev), (uintptr_t)addr) == -1) {
1150 1151 mdb_warn("failed to read vdev_t at %p\n", (uintptr_t)addr);
1151 1152 return (DCMD_ERR);
1152 1153 }
1153 1154
1154 1155 if (flags & DCMD_PIPE_OUT) {
1155 1156 mdb_printf("%#lr", addr);
1156 1157 } else {
1157 1158 if (vdev.vdev_path != NULL) {
1158 1159 if (mdb_readstr(desc, sizeof (desc),
1159 1160 (uintptr_t)vdev.vdev_path) == -1) {
1160 1161 mdb_warn("failed to read vdev_path at %p\n",
1161 1162 vdev.vdev_path);
1162 1163 return (DCMD_ERR);
1163 1164 }
1164 1165 } else if (vdev.vdev_ops != NULL) {
1165 1166 vdev_ops_t ops;
1166 1167 if (mdb_vread(&ops, sizeof (ops),
1167 1168 (uintptr_t)vdev.vdev_ops) == -1) {
1168 1169 mdb_warn("failed to read vdev_ops at %p\n",
1169 1170 vdev.vdev_ops);
1170 1171 return (DCMD_ERR);
1171 1172 }
1172 1173 (void) strcpy(desc, ops.vdev_op_type);
1173 1174 } else {
1174 1175 (void) strcpy(desc, "<unknown>");
1175 1176 }
1176 1177
1177 1178 if (depth == 0 && DCMD_HDRSPEC(flags))
1178 1179 mdb_printf("%<u>%-?s %-9s %-12s %-*s%</u>\n",
1179 1180 "ADDR", "STATE", "AUX",
1180 1181 sizeof (uintptr_t) == 4 ? 43 : 35,
1181 1182 "DESCRIPTION");
1182 1183
1183 1184 mdb_printf("%0?p ", addr);
1184 1185
1185 1186 switch (vdev.vdev_state) {
1186 1187 case VDEV_STATE_CLOSED:
1187 1188 state = "CLOSED";
1188 1189 break;
1189 1190 case VDEV_STATE_OFFLINE:
1190 1191 state = "OFFLINE";
1191 1192 break;
1192 1193 case VDEV_STATE_CANT_OPEN:
1193 1194 state = "CANT_OPEN";
1194 1195 break;
1195 1196 case VDEV_STATE_DEGRADED:
1196 1197 state = "DEGRADED";
1197 1198 break;
1198 1199 case VDEV_STATE_HEALTHY:
1199 1200 state = "HEALTHY";
1200 1201 break;
1201 1202 case VDEV_STATE_REMOVED:
1202 1203 state = "REMOVED";
1203 1204 break;
1204 1205 case VDEV_STATE_FAULTED:
1205 1206 state = "FAULTED";
1206 1207 break;
1207 1208 default:
1208 1209 state = "UNKNOWN";
1209 1210 break;
1210 1211 }
1211 1212
1212 1213 switch (vdev.vdev_stat.vs_aux) {
1213 1214 case VDEV_AUX_NONE:
1214 1215 aux = "-";
1215 1216 break;
1216 1217 case VDEV_AUX_OPEN_FAILED:
1217 1218 aux = "OPEN_FAILED";
1218 1219 break;
1219 1220 case VDEV_AUX_CORRUPT_DATA:
1220 1221 aux = "CORRUPT_DATA";
1221 1222 break;
1222 1223 case VDEV_AUX_NO_REPLICAS:
1223 1224 aux = "NO_REPLICAS";
1224 1225 break;
1225 1226 case VDEV_AUX_BAD_GUID_SUM:
1226 1227 aux = "BAD_GUID_SUM";
1227 1228 break;
1228 1229 case VDEV_AUX_TOO_SMALL:
1229 1230 aux = "TOO_SMALL";
|
↓ open down ↓ |
1196 lines elided |
↑ open up ↑ |
1230 1231 break;
1231 1232 case VDEV_AUX_BAD_LABEL:
1232 1233 aux = "BAD_LABEL";
1233 1234 break;
1234 1235 case VDEV_AUX_VERSION_NEWER:
1235 1236 aux = "VERS_NEWER";
1236 1237 break;
1237 1238 case VDEV_AUX_VERSION_OLDER:
1238 1239 aux = "VERS_OLDER";
1239 1240 break;
1241 + case VDEV_AUX_UNSUP_FEAT:
1242 + aux = "UNSUP_FEAT";
1243 + break;
1240 1244 case VDEV_AUX_SPARED:
1241 1245 aux = "SPARED";
1242 1246 break;
1243 1247 case VDEV_AUX_ERR_EXCEEDED:
1244 1248 aux = "ERR_EXCEEDED";
1245 1249 break;
1246 1250 case VDEV_AUX_IO_FAILURE:
1247 1251 aux = "IO_FAILURE";
1248 1252 break;
1249 1253 case VDEV_AUX_BAD_LOG:
1250 1254 aux = "BAD_LOG";
1251 1255 break;
1252 1256 case VDEV_AUX_EXTERNAL:
1253 1257 aux = "EXTERNAL";
1254 1258 break;
1255 1259 case VDEV_AUX_SPLIT_POOL:
1256 1260 aux = "SPLIT_POOL";
1257 1261 break;
1258 1262 default:
1259 1263 aux = "UNKNOWN";
1260 1264 break;
1261 1265 }
1262 1266
1263 1267 mdb_printf("%-9s %-12s %*s%s\n", state, aux, depth, "", desc);
1264 1268
1265 1269 if (stats) {
1266 1270 vdev_stat_t *vs = &vdev.vdev_stat;
1267 1271 int i;
1268 1272
1269 1273 mdb_inc_indent(4);
1270 1274 mdb_printf("\n");
1271 1275 mdb_printf("%<u> %12s %12s %12s %12s "
1272 1276 "%12s%</u>\n", "READ", "WRITE", "FREE", "CLAIM",
1273 1277 "IOCTL");
1274 1278 mdb_printf("OPS ");
1275 1279 for (i = 1; i < ZIO_TYPES; i++)
1276 1280 mdb_printf("%11#llx%s", vs->vs_ops[i],
1277 1281 i == ZIO_TYPES - 1 ? "" : " ");
1278 1282 mdb_printf("\n");
1279 1283 mdb_printf("BYTES ");
1280 1284 for (i = 1; i < ZIO_TYPES; i++)
1281 1285 mdb_printf("%11#llx%s", vs->vs_bytes[i],
1282 1286 i == ZIO_TYPES - 1 ? "" : " ");
1283 1287
1284 1288
1285 1289 mdb_printf("\n");
1286 1290 mdb_printf("EREAD %10#llx\n", vs->vs_read_errors);
1287 1291 mdb_printf("EWRITE %10#llx\n", vs->vs_write_errors);
1288 1292 mdb_printf("ECKSUM %10#llx\n",
1289 1293 vs->vs_checksum_errors);
1290 1294 mdb_dec_indent(4);
1291 1295 }
1292 1296
1293 1297 if (stats)
1294 1298 mdb_printf("\n");
1295 1299 }
1296 1300
1297 1301 children = vdev.vdev_children;
1298 1302
1299 1303 if (children == 0 || !recursive)
1300 1304 return (DCMD_OK);
1301 1305
1302 1306 child = mdb_alloc(children * sizeof (void *), UM_SLEEP | UM_GC);
1303 1307 if (mdb_vread(child, children * sizeof (void *),
1304 1308 (uintptr_t)vdev.vdev_child) == -1) {
1305 1309 mdb_warn("failed to read vdev children at %p", vdev.vdev_child);
1306 1310 return (DCMD_ERR);
1307 1311 }
1308 1312
1309 1313 for (c = 0; c < children; c++) {
1310 1314 if (do_print_vdev(child[c], flags, depth + 2, stats,
1311 1315 recursive))
1312 1316 return (DCMD_ERR);
1313 1317 }
1314 1318
1315 1319 return (DCMD_OK);
1316 1320 }
1317 1321
1318 1322 static int
1319 1323 vdev_print(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
1320 1324 {
1321 1325 int recursive = FALSE;
1322 1326 int stats = FALSE;
1323 1327 uint64_t depth = 0;
1324 1328
1325 1329 if (mdb_getopts(argc, argv,
1326 1330 'r', MDB_OPT_SETBITS, TRUE, &recursive,
1327 1331 'e', MDB_OPT_SETBITS, TRUE, &stats,
1328 1332 'd', MDB_OPT_UINT64, &depth,
1329 1333 NULL) != argc)
1330 1334 return (DCMD_USAGE);
1331 1335
1332 1336 if (!(flags & DCMD_ADDRSPEC)) {
1333 1337 mdb_warn("no vdev_t address given\n");
1334 1338 return (DCMD_ERR);
1335 1339 }
1336 1340
1337 1341 return (do_print_vdev(addr, flags, (int)depth, stats, recursive));
1338 1342 }
1339 1343
1340 1344 typedef struct metaslab_walk_data {
1341 1345 uint64_t mw_numvdevs;
1342 1346 uintptr_t *mw_vdevs;
1343 1347 int mw_curvdev;
1344 1348 uint64_t mw_nummss;
1345 1349 uintptr_t *mw_mss;
1346 1350 int mw_curms;
1347 1351 } metaslab_walk_data_t;
1348 1352
1349 1353 static int
1350 1354 metaslab_walk_step(mdb_walk_state_t *wsp)
1351 1355 {
1352 1356 metaslab_walk_data_t *mw = wsp->walk_data;
1353 1357 metaslab_t ms;
1354 1358 uintptr_t msp;
1355 1359
1356 1360 if (mw->mw_curvdev >= mw->mw_numvdevs)
1357 1361 return (WALK_DONE);
1358 1362
1359 1363 if (mw->mw_mss == NULL) {
1360 1364 uintptr_t mssp;
1361 1365 uintptr_t vdevp;
1362 1366
1363 1367 ASSERT(mw->mw_curms == 0);
1364 1368 ASSERT(mw->mw_nummss == 0);
1365 1369
1366 1370 vdevp = mw->mw_vdevs[mw->mw_curvdev];
1367 1371 if (GETMEMB(vdevp, struct vdev, vdev_ms, mssp) ||
1368 1372 GETMEMB(vdevp, struct vdev, vdev_ms_count, mw->mw_nummss)) {
1369 1373 return (WALK_ERR);
1370 1374 }
1371 1375
1372 1376 mw->mw_mss = mdb_alloc(mw->mw_nummss * sizeof (void*),
1373 1377 UM_SLEEP | UM_GC);
1374 1378 if (mdb_vread(mw->mw_mss, mw->mw_nummss * sizeof (void*),
1375 1379 mssp) == -1) {
1376 1380 mdb_warn("failed to read vdev_ms at %p", mssp);
1377 1381 return (WALK_ERR);
1378 1382 }
1379 1383 }
1380 1384
1381 1385 if (mw->mw_curms >= mw->mw_nummss) {
1382 1386 mw->mw_mss = NULL;
1383 1387 mw->mw_curms = 0;
1384 1388 mw->mw_nummss = 0;
1385 1389 mw->mw_curvdev++;
1386 1390 return (WALK_NEXT);
1387 1391 }
1388 1392
1389 1393 msp = mw->mw_mss[mw->mw_curms];
1390 1394 if (mdb_vread(&ms, sizeof (metaslab_t), msp) == -1) {
1391 1395 mdb_warn("failed to read metaslab_t at %p", msp);
1392 1396 return (WALK_ERR);
1393 1397 }
1394 1398
1395 1399 mw->mw_curms++;
1396 1400
1397 1401 return (wsp->walk_callback(msp, &ms, wsp->walk_cbdata));
1398 1402 }
1399 1403
1400 1404 /* ARGSUSED */
1401 1405 static int
1402 1406 metaslab_walk_init(mdb_walk_state_t *wsp)
1403 1407 {
1404 1408 metaslab_walk_data_t *mw;
1405 1409 uintptr_t root_vdevp;
1406 1410 uintptr_t childp;
1407 1411
1408 1412 if (wsp->walk_addr == NULL) {
1409 1413 mdb_warn("must supply address of spa_t\n");
1410 1414 return (WALK_ERR);
1411 1415 }
1412 1416
1413 1417 mw = mdb_zalloc(sizeof (metaslab_walk_data_t), UM_SLEEP | UM_GC);
1414 1418
1415 1419 if (GETMEMB(wsp->walk_addr, struct spa, spa_root_vdev, root_vdevp) ||
1416 1420 GETMEMB(root_vdevp, struct vdev, vdev_children, mw->mw_numvdevs) ||
1417 1421 GETMEMB(root_vdevp, struct vdev, vdev_child, childp)) {
1418 1422 return (DCMD_ERR);
1419 1423 }
1420 1424
1421 1425 mw->mw_vdevs = mdb_alloc(mw->mw_numvdevs * sizeof (void *),
1422 1426 UM_SLEEP | UM_GC);
1423 1427 if (mdb_vread(mw->mw_vdevs, mw->mw_numvdevs * sizeof (void *),
1424 1428 childp) == -1) {
1425 1429 mdb_warn("failed to read root vdev children at %p", childp);
1426 1430 return (DCMD_ERR);
1427 1431 }
1428 1432
1429 1433 wsp->walk_data = mw;
1430 1434
1431 1435 return (WALK_NEXT);
1432 1436 }
1433 1437
1434 1438 typedef struct mdb_spa {
1435 1439 uintptr_t spa_dsl_pool;
1436 1440 uintptr_t spa_root_vdev;
1437 1441 } mdb_spa_t;
1438 1442
1439 1443 typedef struct mdb_dsl_dir {
1440 1444 uintptr_t dd_phys;
1441 1445 int64_t dd_space_towrite[TXG_SIZE];
1442 1446 } mdb_dsl_dir_t;
1443 1447
1444 1448 typedef struct mdb_dsl_dir_phys {
1445 1449 uint64_t dd_used_bytes;
1446 1450 uint64_t dd_compressed_bytes;
1447 1451 uint64_t dd_uncompressed_bytes;
1448 1452 } mdb_dsl_dir_phys_t;
1449 1453
1450 1454 typedef struct mdb_vdev {
1451 1455 uintptr_t vdev_parent;
1452 1456 uintptr_t vdev_ms;
1453 1457 uint64_t vdev_ms_count;
1454 1458 vdev_stat_t vdev_stat;
1455 1459 } mdb_vdev_t;
1456 1460
1457 1461 typedef struct mdb_metaslab {
1458 1462 space_map_t ms_allocmap[TXG_SIZE];
1459 1463 space_map_t ms_freemap[TXG_SIZE];
1460 1464 space_map_t ms_map;
1461 1465 space_map_obj_t ms_smo;
1462 1466 space_map_obj_t ms_smo_syncing;
1463 1467 } mdb_metaslab_t;
1464 1468
1465 1469 typedef struct space_data {
1466 1470 uint64_t ms_allocmap[TXG_SIZE];
1467 1471 uint64_t ms_freemap[TXG_SIZE];
1468 1472 uint64_t ms_map;
1469 1473 uint64_t avail;
1470 1474 uint64_t nowavail;
1471 1475 } space_data_t;
1472 1476
1473 1477 /* ARGSUSED */
1474 1478 static int
1475 1479 space_cb(uintptr_t addr, const void *unknown, void *arg)
1476 1480 {
1477 1481 space_data_t *sd = arg;
1478 1482 mdb_metaslab_t ms;
1479 1483
1480 1484 if (GETMEMB(addr, struct metaslab, ms_allocmap, ms.ms_allocmap) ||
1481 1485 GETMEMB(addr, struct metaslab, ms_freemap, ms.ms_freemap) ||
1482 1486 GETMEMB(addr, struct metaslab, ms_map, ms.ms_map) ||
1483 1487 GETMEMB(addr, struct metaslab, ms_smo, ms.ms_smo) ||
1484 1488 GETMEMB(addr, struct metaslab, ms_smo_syncing, ms.ms_smo_syncing)) {
1485 1489 return (WALK_ERR);
1486 1490 }
1487 1491
1488 1492 sd->ms_allocmap[0] += ms.ms_allocmap[0].sm_space;
1489 1493 sd->ms_allocmap[1] += ms.ms_allocmap[1].sm_space;
1490 1494 sd->ms_allocmap[2] += ms.ms_allocmap[2].sm_space;
1491 1495 sd->ms_allocmap[3] += ms.ms_allocmap[3].sm_space;
1492 1496 sd->ms_freemap[0] += ms.ms_freemap[0].sm_space;
1493 1497 sd->ms_freemap[1] += ms.ms_freemap[1].sm_space;
1494 1498 sd->ms_freemap[2] += ms.ms_freemap[2].sm_space;
1495 1499 sd->ms_freemap[3] += ms.ms_freemap[3].sm_space;
1496 1500 sd->ms_map += ms.ms_map.sm_space;
1497 1501 sd->avail += ms.ms_map.sm_size - ms.ms_smo.smo_alloc;
1498 1502 sd->nowavail += ms.ms_map.sm_size - ms.ms_smo_syncing.smo_alloc;
1499 1503
1500 1504 return (WALK_NEXT);
1501 1505 }
1502 1506
1503 1507 /*
1504 1508 * ::spa_space [-b]
1505 1509 *
1506 1510 * Given a spa_t, print out it's on-disk space usage and in-core
1507 1511 * estimates of future usage. If -b is given, print space in bytes.
1508 1512 * Otherwise print in megabytes.
1509 1513 */
1510 1514 /* ARGSUSED */
1511 1515 static int
1512 1516 spa_space(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
1513 1517 {
1514 1518 mdb_spa_t spa;
1515 1519 uintptr_t dp_root_dir;
1516 1520 mdb_dsl_dir_t dd;
1517 1521 mdb_dsl_dir_phys_t dsp;
1518 1522 uint64_t children;
1519 1523 uintptr_t childaddr;
1520 1524 space_data_t sd;
1521 1525 int shift = 20;
1522 1526 char *suffix = "M";
1523 1527 int bits = FALSE;
1524 1528
1525 1529 if (mdb_getopts(argc, argv, 'b', MDB_OPT_SETBITS, TRUE, &bits, NULL) !=
1526 1530 argc)
1527 1531 return (DCMD_USAGE);
1528 1532 if (!(flags & DCMD_ADDRSPEC))
1529 1533 return (DCMD_USAGE);
1530 1534
1531 1535 if (bits) {
1532 1536 shift = 0;
1533 1537 suffix = "";
1534 1538 }
1535 1539
1536 1540 if (GETMEMB(addr, struct spa, spa_dsl_pool, spa.spa_dsl_pool) ||
1537 1541 GETMEMB(addr, struct spa, spa_root_vdev, spa.spa_root_vdev) ||
1538 1542 GETMEMB(spa.spa_root_vdev, struct vdev, vdev_children, children) ||
1539 1543 GETMEMB(spa.spa_root_vdev, struct vdev, vdev_child, childaddr) ||
1540 1544 GETMEMB(spa.spa_dsl_pool, struct dsl_pool,
1541 1545 dp_root_dir, dp_root_dir) ||
1542 1546 GETMEMB(dp_root_dir, struct dsl_dir, dd_phys, dd.dd_phys) ||
1543 1547 GETMEMB(dp_root_dir, struct dsl_dir,
1544 1548 dd_space_towrite, dd.dd_space_towrite) ||
1545 1549 GETMEMB(dd.dd_phys, struct dsl_dir_phys,
1546 1550 dd_used_bytes, dsp.dd_used_bytes) ||
1547 1551 GETMEMB(dd.dd_phys, struct dsl_dir_phys,
1548 1552 dd_compressed_bytes, dsp.dd_compressed_bytes) ||
1549 1553 GETMEMB(dd.dd_phys, struct dsl_dir_phys,
1550 1554 dd_uncompressed_bytes, dsp.dd_uncompressed_bytes)) {
1551 1555 return (DCMD_ERR);
1552 1556 }
1553 1557
1554 1558 mdb_printf("dd_space_towrite = %llu%s %llu%s %llu%s %llu%s\n",
1555 1559 dd.dd_space_towrite[0] >> shift, suffix,
1556 1560 dd.dd_space_towrite[1] >> shift, suffix,
1557 1561 dd.dd_space_towrite[2] >> shift, suffix,
1558 1562 dd.dd_space_towrite[3] >> shift, suffix);
1559 1563
1560 1564 mdb_printf("dd_phys.dd_used_bytes = %llu%s\n",
1561 1565 dsp.dd_used_bytes >> shift, suffix);
1562 1566 mdb_printf("dd_phys.dd_compressed_bytes = %llu%s\n",
1563 1567 dsp.dd_compressed_bytes >> shift, suffix);
1564 1568 mdb_printf("dd_phys.dd_uncompressed_bytes = %llu%s\n",
1565 1569 dsp.dd_uncompressed_bytes >> shift, suffix);
1566 1570
1567 1571 bzero(&sd, sizeof (sd));
1568 1572 if (mdb_pwalk("metaslab", space_cb, &sd, addr) != 0) {
1569 1573 mdb_warn("can't walk metaslabs");
1570 1574 return (DCMD_ERR);
1571 1575 }
1572 1576
1573 1577 mdb_printf("ms_allocmap = %llu%s %llu%s %llu%s %llu%s\n",
1574 1578 sd.ms_allocmap[0] >> shift, suffix,
1575 1579 sd.ms_allocmap[1] >> shift, suffix,
1576 1580 sd.ms_allocmap[2] >> shift, suffix,
1577 1581 sd.ms_allocmap[3] >> shift, suffix);
1578 1582 mdb_printf("ms_freemap = %llu%s %llu%s %llu%s %llu%s\n",
1579 1583 sd.ms_freemap[0] >> shift, suffix,
1580 1584 sd.ms_freemap[1] >> shift, suffix,
1581 1585 sd.ms_freemap[2] >> shift, suffix,
1582 1586 sd.ms_freemap[3] >> shift, suffix);
1583 1587 mdb_printf("ms_map = %llu%s\n", sd.ms_map >> shift, suffix);
1584 1588 mdb_printf("last synced avail = %llu%s\n", sd.avail >> shift, suffix);
1585 1589 mdb_printf("current syncing avail = %llu%s\n",
1586 1590 sd.nowavail >> shift, suffix);
1587 1591
1588 1592 return (DCMD_OK);
1589 1593 }
1590 1594
1591 1595 /*
1592 1596 * ::spa_verify
1593 1597 *
1594 1598 * Given a spa_t, verify that that the pool is self-consistent.
1595 1599 * Currently, it only checks to make sure that the vdev tree exists.
1596 1600 */
1597 1601 /* ARGSUSED */
1598 1602 static int
1599 1603 spa_verify(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
1600 1604 {
1601 1605 spa_t spa;
1602 1606
1603 1607 if (argc != 0 || !(flags & DCMD_ADDRSPEC))
1604 1608 return (DCMD_USAGE);
1605 1609
1606 1610 if (mdb_vread(&spa, sizeof (spa), addr) == -1) {
1607 1611 mdb_warn("failed to read spa_t at %p", addr);
1608 1612 return (DCMD_ERR);
1609 1613 }
1610 1614
1611 1615 if (spa.spa_root_vdev == NULL) {
1612 1616 mdb_printf("no vdev tree present\n");
1613 1617 return (DCMD_OK);
1614 1618 }
1615 1619
1616 1620 return (DCMD_OK);
1617 1621 }
1618 1622
1619 1623 static int
1620 1624 spa_print_aux(spa_aux_vdev_t *sav, uint_t flags, mdb_arg_t *v,
1621 1625 const char *name)
1622 1626 {
1623 1627 uintptr_t *aux;
1624 1628 size_t len;
1625 1629 int ret, i;
1626 1630
1627 1631 /*
1628 1632 * Iterate over aux vdevs and print those out as well. This is a
1629 1633 * little annoying because we don't have a root vdev to pass to ::vdev.
1630 1634 * Instead, we print a single line and then call it for each child
1631 1635 * vdev.
1632 1636 */
1633 1637 if (sav->sav_count != 0) {
1634 1638 v[1].a_type = MDB_TYPE_STRING;
1635 1639 v[1].a_un.a_str = "-d";
1636 1640 v[2].a_type = MDB_TYPE_IMMEDIATE;
1637 1641 v[2].a_un.a_val = 2;
1638 1642
1639 1643 len = sav->sav_count * sizeof (uintptr_t);
1640 1644 aux = mdb_alloc(len, UM_SLEEP);
1641 1645 if (mdb_vread(aux, len,
1642 1646 (uintptr_t)sav->sav_vdevs) == -1) {
1643 1647 mdb_free(aux, len);
1644 1648 mdb_warn("failed to read l2cache vdevs at %p",
1645 1649 sav->sav_vdevs);
1646 1650 return (DCMD_ERR);
1647 1651 }
1648 1652
1649 1653 mdb_printf("%-?s %-9s %-12s %s\n", "-", "-", "-", name);
1650 1654
1651 1655 for (i = 0; i < sav->sav_count; i++) {
1652 1656 ret = mdb_call_dcmd("vdev", aux[i], flags, 3, v);
1653 1657 if (ret != DCMD_OK) {
1654 1658 mdb_free(aux, len);
1655 1659 return (ret);
1656 1660 }
1657 1661 }
1658 1662
1659 1663 mdb_free(aux, len);
1660 1664 }
1661 1665
1662 1666 return (0);
1663 1667 }
1664 1668
1665 1669 /*
1666 1670 * ::spa_vdevs
1667 1671 *
1668 1672 * -e Include error stats
1669 1673 *
1670 1674 * Print out a summarized list of vdevs for the given spa_t.
1671 1675 * This is accomplished by invoking "::vdev -re" on the root vdev, as well as
1672 1676 * iterating over the cache devices.
1673 1677 */
1674 1678 /* ARGSUSED */
1675 1679 static int
1676 1680 spa_vdevs(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
1677 1681 {
1678 1682 spa_t spa;
1679 1683 mdb_arg_t v[3];
1680 1684 int errors = FALSE;
1681 1685 int ret;
1682 1686
1683 1687 if (mdb_getopts(argc, argv,
1684 1688 'e', MDB_OPT_SETBITS, TRUE, &errors,
1685 1689 NULL) != argc)
1686 1690 return (DCMD_USAGE);
1687 1691
1688 1692 if (!(flags & DCMD_ADDRSPEC))
1689 1693 return (DCMD_USAGE);
1690 1694
1691 1695 if (mdb_vread(&spa, sizeof (spa), addr) == -1) {
1692 1696 mdb_warn("failed to read spa_t at %p", addr);
1693 1697 return (DCMD_ERR);
1694 1698 }
1695 1699
1696 1700 /*
1697 1701 * Unitialized spa_t structures can have a NULL root vdev.
1698 1702 */
1699 1703 if (spa.spa_root_vdev == NULL) {
1700 1704 mdb_printf("no associated vdevs\n");
1701 1705 return (DCMD_OK);
1702 1706 }
1703 1707
1704 1708 v[0].a_type = MDB_TYPE_STRING;
1705 1709 v[0].a_un.a_str = errors ? "-re" : "-r";
1706 1710
1707 1711 ret = mdb_call_dcmd("vdev", (uintptr_t)spa.spa_root_vdev,
1708 1712 flags, 1, v);
1709 1713 if (ret != DCMD_OK)
1710 1714 return (ret);
1711 1715
1712 1716 if (spa_print_aux(&spa.spa_l2cache, flags, v, "cache") != 0 ||
1713 1717 spa_print_aux(&spa.spa_spares, flags, v, "spares") != 0)
1714 1718 return (DCMD_ERR);
1715 1719
1716 1720 return (DCMD_OK);
1717 1721 }
1718 1722
1719 1723 /*
1720 1724 * ::zio
1721 1725 *
1722 1726 * Print a summary of zio_t and all its children. This is intended to display a
1723 1727 * zio tree, and hence we only pick the most important pieces of information for
1724 1728 * the main summary. More detailed information can always be found by doing a
1725 1729 * '::print zio' on the underlying zio_t. The columns we display are:
1726 1730 *
1727 1731 * ADDRESS TYPE STAGE WAITER
1728 1732 *
1729 1733 * The 'address' column is indented by one space for each depth level as we
1730 1734 * descend down the tree.
1731 1735 */
1732 1736
1733 1737 #define ZIO_MAXINDENT 24
1734 1738 #define ZIO_MAXWIDTH (sizeof (uintptr_t) * 2 + ZIO_MAXINDENT)
1735 1739 #define ZIO_WALK_SELF 0
1736 1740 #define ZIO_WALK_CHILD 1
1737 1741 #define ZIO_WALK_PARENT 2
1738 1742
1739 1743 typedef struct zio_print_args {
1740 1744 int zpa_current_depth;
1741 1745 int zpa_min_depth;
1742 1746 int zpa_max_depth;
1743 1747 int zpa_type;
1744 1748 uint_t zpa_flags;
1745 1749 } zio_print_args_t;
1746 1750
1747 1751 static int zio_child_cb(uintptr_t addr, const void *unknown, void *arg);
1748 1752
1749 1753 static int
1750 1754 zio_print_cb(uintptr_t addr, const void *data, void *priv)
1751 1755 {
1752 1756 const zio_t *zio = data;
1753 1757 zio_print_args_t *zpa = priv;
1754 1758 mdb_ctf_id_t type_enum, stage_enum;
1755 1759 int indent = zpa->zpa_current_depth;
1756 1760 const char *type, *stage;
1757 1761 uintptr_t laddr;
1758 1762
1759 1763 if (indent > ZIO_MAXINDENT)
1760 1764 indent = ZIO_MAXINDENT;
1761 1765
1762 1766 if (mdb_ctf_lookup_by_name("enum zio_type", &type_enum) == -1 ||
1763 1767 mdb_ctf_lookup_by_name("enum zio_stage", &stage_enum) == -1) {
1764 1768 mdb_warn("failed to lookup zio enums");
1765 1769 return (WALK_ERR);
1766 1770 }
1767 1771
1768 1772 if ((type = mdb_ctf_enum_name(type_enum, zio->io_type)) != NULL)
1769 1773 type += sizeof ("ZIO_TYPE_") - 1;
1770 1774 else
1771 1775 type = "?";
1772 1776
1773 1777 if ((stage = mdb_ctf_enum_name(stage_enum, zio->io_stage)) != NULL)
1774 1778 stage += sizeof ("ZIO_STAGE_") - 1;
1775 1779 else
1776 1780 stage = "?";
1777 1781
1778 1782 if (zpa->zpa_current_depth >= zpa->zpa_min_depth) {
1779 1783 if (zpa->zpa_flags & DCMD_PIPE_OUT) {
1780 1784 mdb_printf("%?p\n", addr);
1781 1785 } else {
1782 1786 mdb_printf("%*s%-*p %-5s %-16s ", indent, "",
1783 1787 ZIO_MAXWIDTH - indent, addr, type, stage);
1784 1788 if (zio->io_waiter)
1785 1789 mdb_printf("%?p\n", zio->io_waiter);
1786 1790 else
1787 1791 mdb_printf("-\n");
1788 1792 }
1789 1793 }
1790 1794
1791 1795 if (zpa->zpa_current_depth >= zpa->zpa_max_depth)
1792 1796 return (WALK_NEXT);
1793 1797
1794 1798 if (zpa->zpa_type == ZIO_WALK_PARENT)
1795 1799 laddr = addr + OFFSETOF(zio_t, io_parent_list);
1796 1800 else
1797 1801 laddr = addr + OFFSETOF(zio_t, io_child_list);
1798 1802
1799 1803 zpa->zpa_current_depth++;
1800 1804 if (mdb_pwalk("list", zio_child_cb, zpa, laddr) != 0) {
1801 1805 mdb_warn("failed to walk zio_t children at %p\n", laddr);
1802 1806 return (WALK_ERR);
1803 1807 }
1804 1808 zpa->zpa_current_depth--;
1805 1809
1806 1810 return (WALK_NEXT);
1807 1811 }
1808 1812
1809 1813 /* ARGSUSED */
1810 1814 static int
1811 1815 zio_child_cb(uintptr_t addr, const void *unknown, void *arg)
1812 1816 {
1813 1817 zio_link_t zl;
1814 1818 zio_t zio;
1815 1819 uintptr_t ziop;
1816 1820 zio_print_args_t *zpa = arg;
1817 1821
1818 1822 if (mdb_vread(&zl, sizeof (zl), addr) == -1) {
1819 1823 mdb_warn("failed to read zio_link_t at %p", addr);
1820 1824 return (WALK_ERR);
1821 1825 }
1822 1826
1823 1827 if (zpa->zpa_type == ZIO_WALK_PARENT)
1824 1828 ziop = (uintptr_t)zl.zl_parent;
1825 1829 else
1826 1830 ziop = (uintptr_t)zl.zl_child;
1827 1831
1828 1832 if (mdb_vread(&zio, sizeof (zio_t), ziop) == -1) {
1829 1833 mdb_warn("failed to read zio_t at %p", ziop);
1830 1834 return (WALK_ERR);
1831 1835 }
1832 1836
1833 1837 return (zio_print_cb(ziop, &zio, arg));
1834 1838 }
1835 1839
1836 1840 /* ARGSUSED */
1837 1841 static int
1838 1842 zio_print(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
1839 1843 {
1840 1844 zio_t zio;
1841 1845 zio_print_args_t zpa = { 0 };
1842 1846
1843 1847 if (!(flags & DCMD_ADDRSPEC))
1844 1848 return (DCMD_USAGE);
1845 1849
1846 1850 if (mdb_getopts(argc, argv,
1847 1851 'r', MDB_OPT_SETBITS, INT_MAX, &zpa.zpa_max_depth,
1848 1852 'c', MDB_OPT_SETBITS, ZIO_WALK_CHILD, &zpa.zpa_type,
1849 1853 'p', MDB_OPT_SETBITS, ZIO_WALK_PARENT, &zpa.zpa_type,
1850 1854 NULL) != argc)
1851 1855 return (DCMD_USAGE);
1852 1856
1853 1857 zpa.zpa_flags = flags;
1854 1858 if (zpa.zpa_max_depth != 0) {
1855 1859 if (zpa.zpa_type == ZIO_WALK_SELF)
1856 1860 zpa.zpa_type = ZIO_WALK_CHILD;
1857 1861 } else if (zpa.zpa_type != ZIO_WALK_SELF) {
1858 1862 zpa.zpa_min_depth = 1;
1859 1863 zpa.zpa_max_depth = 1;
1860 1864 }
1861 1865
1862 1866 if (mdb_vread(&zio, sizeof (zio_t), addr) == -1) {
1863 1867 mdb_warn("failed to read zio_t at %p", addr);
1864 1868 return (DCMD_ERR);
1865 1869 }
1866 1870
1867 1871 if (!(flags & DCMD_PIPE_OUT) && DCMD_HDRSPEC(flags))
1868 1872 mdb_printf("%<u>%-*s %-5s %-16s %-?s%</u>\n", ZIO_MAXWIDTH,
1869 1873 "ADDRESS", "TYPE", "STAGE", "WAITER");
1870 1874
1871 1875 if (zio_print_cb(addr, &zio, &zpa) != WALK_NEXT)
1872 1876 return (DCMD_ERR);
1873 1877
1874 1878 return (DCMD_OK);
1875 1879 }
1876 1880
1877 1881 /*
1878 1882 * [addr]::zio_state
1879 1883 *
1880 1884 * Print a summary of all zio_t structures on the system, or for a particular
1881 1885 * pool. This is equivalent to '::walk zio_root | ::zio'.
1882 1886 */
1883 1887 /*ARGSUSED*/
1884 1888 static int
1885 1889 zio_state(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
1886 1890 {
1887 1891 /*
1888 1892 * MDB will remember the last address of the pipeline, so if we don't
1889 1893 * zero this we'll end up trying to walk zio structures for a
1890 1894 * non-existent spa_t.
1891 1895 */
1892 1896 if (!(flags & DCMD_ADDRSPEC))
1893 1897 addr = 0;
1894 1898
1895 1899 return (mdb_pwalk_dcmd("zio_root", "zio", argc, argv, addr));
1896 1900 }
1897 1901
1898 1902 typedef struct txg_list_walk_data {
1899 1903 uintptr_t lw_head[TXG_SIZE];
1900 1904 int lw_txgoff;
1901 1905 int lw_maxoff;
1902 1906 size_t lw_offset;
1903 1907 void *lw_obj;
1904 1908 } txg_list_walk_data_t;
1905 1909
1906 1910 static int
1907 1911 txg_list_walk_init_common(mdb_walk_state_t *wsp, int txg, int maxoff)
1908 1912 {
1909 1913 txg_list_walk_data_t *lwd;
1910 1914 txg_list_t list;
1911 1915 int i;
1912 1916
1913 1917 lwd = mdb_alloc(sizeof (txg_list_walk_data_t), UM_SLEEP | UM_GC);
1914 1918 if (mdb_vread(&list, sizeof (txg_list_t), wsp->walk_addr) == -1) {
1915 1919 mdb_warn("failed to read txg_list_t at %#lx", wsp->walk_addr);
1916 1920 return (WALK_ERR);
1917 1921 }
1918 1922
1919 1923 for (i = 0; i < TXG_SIZE; i++)
1920 1924 lwd->lw_head[i] = (uintptr_t)list.tl_head[i];
1921 1925 lwd->lw_offset = list.tl_offset;
1922 1926 lwd->lw_obj = mdb_alloc(lwd->lw_offset + sizeof (txg_node_t),
1923 1927 UM_SLEEP | UM_GC);
1924 1928 lwd->lw_txgoff = txg;
1925 1929 lwd->lw_maxoff = maxoff;
1926 1930
1927 1931 wsp->walk_addr = lwd->lw_head[lwd->lw_txgoff];
1928 1932 wsp->walk_data = lwd;
1929 1933
1930 1934 return (WALK_NEXT);
1931 1935 }
1932 1936
1933 1937 static int
1934 1938 txg_list_walk_init(mdb_walk_state_t *wsp)
1935 1939 {
1936 1940 return (txg_list_walk_init_common(wsp, 0, TXG_SIZE-1));
1937 1941 }
1938 1942
1939 1943 static int
1940 1944 txg_list0_walk_init(mdb_walk_state_t *wsp)
1941 1945 {
1942 1946 return (txg_list_walk_init_common(wsp, 0, 0));
1943 1947 }
1944 1948
1945 1949 static int
1946 1950 txg_list1_walk_init(mdb_walk_state_t *wsp)
1947 1951 {
1948 1952 return (txg_list_walk_init_common(wsp, 1, 1));
1949 1953 }
1950 1954
1951 1955 static int
1952 1956 txg_list2_walk_init(mdb_walk_state_t *wsp)
1953 1957 {
1954 1958 return (txg_list_walk_init_common(wsp, 2, 2));
1955 1959 }
1956 1960
1957 1961 static int
1958 1962 txg_list3_walk_init(mdb_walk_state_t *wsp)
1959 1963 {
1960 1964 return (txg_list_walk_init_common(wsp, 3, 3));
1961 1965 }
1962 1966
1963 1967 static int
1964 1968 txg_list_walk_step(mdb_walk_state_t *wsp)
1965 1969 {
1966 1970 txg_list_walk_data_t *lwd = wsp->walk_data;
1967 1971 uintptr_t addr;
1968 1972 txg_node_t *node;
1969 1973 int status;
1970 1974
1971 1975 while (wsp->walk_addr == NULL && lwd->lw_txgoff < lwd->lw_maxoff) {
1972 1976 lwd->lw_txgoff++;
1973 1977 wsp->walk_addr = lwd->lw_head[lwd->lw_txgoff];
1974 1978 }
1975 1979
1976 1980 if (wsp->walk_addr == NULL)
1977 1981 return (WALK_DONE);
1978 1982
1979 1983 addr = wsp->walk_addr - lwd->lw_offset;
1980 1984
1981 1985 if (mdb_vread(lwd->lw_obj,
1982 1986 lwd->lw_offset + sizeof (txg_node_t), addr) == -1) {
1983 1987 mdb_warn("failed to read list element at %#lx", addr);
1984 1988 return (WALK_ERR);
1985 1989 }
1986 1990
1987 1991 status = wsp->walk_callback(addr, lwd->lw_obj, wsp->walk_cbdata);
1988 1992 node = (txg_node_t *)((uintptr_t)lwd->lw_obj + lwd->lw_offset);
1989 1993 wsp->walk_addr = (uintptr_t)node->tn_next[lwd->lw_txgoff];
1990 1994
1991 1995 return (status);
1992 1996 }
1993 1997
1994 1998 /*
1995 1999 * ::walk spa
1996 2000 *
1997 2001 * Walk all named spa_t structures in the namespace. This is nothing more than
1998 2002 * a layered avl walk.
1999 2003 */
2000 2004 static int
2001 2005 spa_walk_init(mdb_walk_state_t *wsp)
2002 2006 {
2003 2007 GElf_Sym sym;
2004 2008
2005 2009 if (wsp->walk_addr != NULL) {
2006 2010 mdb_warn("spa walk only supports global walks\n");
2007 2011 return (WALK_ERR);
2008 2012 }
2009 2013
2010 2014 if (mdb_lookup_by_obj(ZFS_OBJ_NAME, "spa_namespace_avl", &sym) == -1) {
2011 2015 mdb_warn("failed to find symbol 'spa_namespace_avl'");
2012 2016 return (WALK_ERR);
2013 2017 }
2014 2018
2015 2019 wsp->walk_addr = (uintptr_t)sym.st_value;
2016 2020
2017 2021 if (mdb_layered_walk("avl", wsp) == -1) {
2018 2022 mdb_warn("failed to walk 'avl'\n");
2019 2023 return (WALK_ERR);
2020 2024 }
2021 2025
2022 2026 return (WALK_NEXT);
2023 2027 }
2024 2028
2025 2029 static int
2026 2030 spa_walk_step(mdb_walk_state_t *wsp)
2027 2031 {
2028 2032 spa_t spa;
2029 2033
2030 2034 if (mdb_vread(&spa, sizeof (spa), wsp->walk_addr) == -1) {
2031 2035 mdb_warn("failed to read spa_t at %p", wsp->walk_addr);
2032 2036 return (WALK_ERR);
2033 2037 }
2034 2038
2035 2039 return (wsp->walk_callback(wsp->walk_addr, &spa, wsp->walk_cbdata));
2036 2040 }
2037 2041
2038 2042 /*
2039 2043 * [addr]::walk zio
2040 2044 *
2041 2045 * Walk all active zio_t structures on the system. This is simply a layered
2042 2046 * walk on top of ::walk zio_cache, with the optional ability to limit the
2043 2047 * structures to a particular pool.
2044 2048 */
2045 2049 static int
2046 2050 zio_walk_init(mdb_walk_state_t *wsp)
2047 2051 {
2048 2052 wsp->walk_data = (void *)wsp->walk_addr;
2049 2053
2050 2054 if (mdb_layered_walk("zio_cache", wsp) == -1) {
2051 2055 mdb_warn("failed to walk 'zio_cache'\n");
2052 2056 return (WALK_ERR);
2053 2057 }
2054 2058
2055 2059 return (WALK_NEXT);
2056 2060 }
2057 2061
2058 2062 static int
2059 2063 zio_walk_step(mdb_walk_state_t *wsp)
2060 2064 {
2061 2065 zio_t zio;
2062 2066
2063 2067 if (mdb_vread(&zio, sizeof (zio), wsp->walk_addr) == -1) {
2064 2068 mdb_warn("failed to read zio_t at %p", wsp->walk_addr);
2065 2069 return (WALK_ERR);
2066 2070 }
2067 2071
2068 2072 if (wsp->walk_data != NULL && wsp->walk_data != zio.io_spa)
2069 2073 return (WALK_NEXT);
2070 2074
2071 2075 return (wsp->walk_callback(wsp->walk_addr, &zio, wsp->walk_cbdata));
2072 2076 }
2073 2077
2074 2078 /*
2075 2079 * [addr]::walk zio_root
2076 2080 *
2077 2081 * Walk only root zio_t structures, optionally for a particular spa_t.
2078 2082 */
2079 2083 static int
2080 2084 zio_walk_root_step(mdb_walk_state_t *wsp)
2081 2085 {
2082 2086 zio_t zio;
2083 2087
2084 2088 if (mdb_vread(&zio, sizeof (zio), wsp->walk_addr) == -1) {
2085 2089 mdb_warn("failed to read zio_t at %p", wsp->walk_addr);
2086 2090 return (WALK_ERR);
2087 2091 }
2088 2092
2089 2093 if (wsp->walk_data != NULL && wsp->walk_data != zio.io_spa)
2090 2094 return (WALK_NEXT);
2091 2095
2092 2096 /* If the parent list is not empty, ignore */
2093 2097 if (zio.io_parent_list.list_head.list_next !=
2094 2098 &((zio_t *)wsp->walk_addr)->io_parent_list.list_head)
2095 2099 return (WALK_NEXT);
2096 2100
2097 2101 return (wsp->walk_callback(wsp->walk_addr, &zio, wsp->walk_cbdata));
2098 2102 }
2099 2103
2100 2104 #define NICENUM_BUFLEN 6
2101 2105
2102 2106 static int
2103 2107 snprintfrac(char *buf, int len,
2104 2108 uint64_t numerator, uint64_t denom, int frac_digits)
2105 2109 {
2106 2110 int mul = 1;
2107 2111 int whole, frac, i;
2108 2112
2109 2113 for (i = frac_digits; i; i--)
2110 2114 mul *= 10;
2111 2115 whole = numerator / denom;
2112 2116 frac = mul * numerator / denom - mul * whole;
2113 2117 return (mdb_snprintf(buf, len, "%u.%0*u", whole, frac_digits, frac));
2114 2118 }
2115 2119
2116 2120 static void
2117 2121 mdb_nicenum(uint64_t num, char *buf)
2118 2122 {
2119 2123 uint64_t n = num;
2120 2124 int index = 0;
2121 2125 char *u;
2122 2126
2123 2127 while (n >= 1024) {
2124 2128 n = (n + (1024 / 2)) / 1024; /* Round up or down */
2125 2129 index++;
2126 2130 }
2127 2131
2128 2132 u = &" \0K\0M\0G\0T\0P\0E\0"[index*2];
2129 2133
2130 2134 if (index == 0) {
2131 2135 (void) mdb_snprintf(buf, NICENUM_BUFLEN, "%llu",
2132 2136 (u_longlong_t)n);
2133 2137 } else if (n < 10 && (num & (num - 1)) != 0) {
2134 2138 (void) snprintfrac(buf, NICENUM_BUFLEN,
2135 2139 num, 1ULL << 10 * index, 2);
2136 2140 strcat(buf, u);
2137 2141 } else if (n < 100 && (num & (num - 1)) != 0) {
2138 2142 (void) snprintfrac(buf, NICENUM_BUFLEN,
2139 2143 num, 1ULL << 10 * index, 1);
2140 2144 strcat(buf, u);
2141 2145 } else {
2142 2146 (void) mdb_snprintf(buf, NICENUM_BUFLEN, "%llu%s",
2143 2147 (u_longlong_t)n, u);
2144 2148 }
2145 2149 }
2146 2150
2147 2151 /*
2148 2152 * ::zfs_blkstats
2149 2153 *
2150 2154 * -v print verbose per-level information
2151 2155 *
2152 2156 */
2153 2157 static int
2154 2158 zfs_blkstats(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
2155 2159 {
2156 2160 boolean_t verbose = B_FALSE;
2157 2161 zfs_all_blkstats_t stats;
2158 2162 dmu_object_type_t t;
2159 2163 zfs_blkstat_t *tzb;
2160 2164 uint64_t ditto;
2161 2165 dmu_object_type_info_t dmu_ot[DMU_OT_NUMTYPES + 10];
2162 2166 /* +10 in case it grew */
2163 2167
2164 2168 if (mdb_readvar(&dmu_ot, "dmu_ot") == -1) {
2165 2169 mdb_warn("failed to read 'dmu_ot'");
2166 2170 return (DCMD_ERR);
2167 2171 }
2168 2172
2169 2173 if (mdb_getopts(argc, argv,
2170 2174 'v', MDB_OPT_SETBITS, TRUE, &verbose,
2171 2175 NULL) != argc)
2172 2176 return (DCMD_USAGE);
2173 2177
2174 2178 if (!(flags & DCMD_ADDRSPEC))
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2175 2179 return (DCMD_USAGE);
2176 2180
2177 2181 if (GETMEMB(addr, struct spa, spa_dsl_pool, addr) ||
2178 2182 GETMEMB(addr, struct dsl_pool, dp_blkstats, addr) ||
2179 2183 mdb_vread(&stats, sizeof (zfs_all_blkstats_t), addr) == -1) {
2180 2184 mdb_warn("failed to read data at %p;", addr);
2181 2185 mdb_printf("maybe no stats? run \"zpool scrub\" first.");
2182 2186 return (DCMD_ERR);
2183 2187 }
2184 2188
2185 - tzb = &stats.zab_type[DN_MAX_LEVELS][DMU_OT_NUMTYPES];
2189 + tzb = &stats.zab_type[DN_MAX_LEVELS][DMU_OT_TOTAL];
2186 2190 if (tzb->zb_gangs != 0) {
2187 2191 mdb_printf("Ganged blocks: %llu\n",
2188 2192 (longlong_t)tzb->zb_gangs);
2189 2193 }
2190 2194
2191 2195 ditto = tzb->zb_ditto_2_of_2_samevdev + tzb->zb_ditto_2_of_3_samevdev +
2192 2196 tzb->zb_ditto_3_of_3_samevdev;
2193 2197 if (ditto != 0) {
2194 2198 mdb_printf("Dittoed blocks on same vdev: %llu\n",
2195 2199 (longlong_t)ditto);
2196 2200 }
2197 2201
2198 2202 mdb_printf("\nBlocks\tLSIZE\tPSIZE\tASIZE"
2199 2203 "\t avg\t comp\t%%Total\tType\n");
2200 2204
2201 - for (t = 0; t <= DMU_OT_NUMTYPES; t++) {
2205 + for (t = 0; t <= DMU_OT_TOTAL; t++) {
2202 2206 char csize[NICENUM_BUFLEN], lsize[NICENUM_BUFLEN];
2203 2207 char psize[NICENUM_BUFLEN], asize[NICENUM_BUFLEN];
2204 2208 char avg[NICENUM_BUFLEN];
2205 2209 char comp[NICENUM_BUFLEN], pct[NICENUM_BUFLEN];
2206 2210 char typename[64];
2207 2211 int l;
2208 2212
2209 2213
2210 2214 if (t == DMU_OT_DEFERRED)
2211 2215 strcpy(typename, "deferred free");
2216 + else if (t == DMU_OT_OTHER)
2217 + strcpy(typename, "other");
2212 2218 else if (t == DMU_OT_TOTAL)
2213 2219 strcpy(typename, "Total");
2214 2220 else if (mdb_readstr(typename, sizeof (typename),
2215 2221 (uintptr_t)dmu_ot[t].ot_name) == -1) {
2216 2222 mdb_warn("failed to read type name");
2217 2223 return (DCMD_ERR);
2218 2224 }
2219 2225
2220 2226 if (stats.zab_type[DN_MAX_LEVELS][t].zb_asize == 0)
2221 2227 continue;
2222 2228
2223 2229 for (l = -1; l < DN_MAX_LEVELS; l++) {
2224 2230 int level = (l == -1 ? DN_MAX_LEVELS : l);
2225 2231 zfs_blkstat_t *zb = &stats.zab_type[level][t];
2226 2232
2227 2233 if (zb->zb_asize == 0)
2228 2234 continue;
2229 2235
2230 2236 /*
2231 2237 * Don't print each level unless requested.
2232 2238 */
2233 2239 if (!verbose && level != DN_MAX_LEVELS)
2234 2240 continue;
2235 2241
2236 2242 /*
2237 2243 * If all the space is level 0, don't print the
2238 2244 * level 0 separately.
2239 2245 */
2240 2246 if (level == 0 && zb->zb_asize ==
2241 2247 stats.zab_type[DN_MAX_LEVELS][t].zb_asize)
2242 2248 continue;
2243 2249
2244 2250 mdb_nicenum(zb->zb_count, csize);
2245 2251 mdb_nicenum(zb->zb_lsize, lsize);
2246 2252 mdb_nicenum(zb->zb_psize, psize);
2247 2253 mdb_nicenum(zb->zb_asize, asize);
2248 2254 mdb_nicenum(zb->zb_asize / zb->zb_count, avg);
2249 2255 (void) snprintfrac(comp, NICENUM_BUFLEN,
2250 2256 zb->zb_lsize, zb->zb_psize, 2);
2251 2257 (void) snprintfrac(pct, NICENUM_BUFLEN,
2252 2258 100 * zb->zb_asize, tzb->zb_asize, 2);
2253 2259
2254 2260 mdb_printf("%6s\t%5s\t%5s\t%5s\t%5s"
2255 2261 "\t%5s\t%6s\t",
2256 2262 csize, lsize, psize, asize, avg, comp, pct);
2257 2263
2258 2264 if (level == DN_MAX_LEVELS)
2259 2265 mdb_printf("%s\n", typename);
2260 2266 else
2261 2267 mdb_printf(" L%d %s\n",
2262 2268 level, typename);
2263 2269 }
2264 2270 }
2265 2271
2266 2272 return (DCMD_OK);
2267 2273 }
2268 2274
2269 2275 /* ARGSUSED */
2270 2276 static int
2271 2277 reference_cb(uintptr_t addr, const void *ignored, void *arg)
2272 2278 {
2273 2279 static int gotid;
2274 2280 static mdb_ctf_id_t ref_id;
2275 2281 uintptr_t ref_holder;
2276 2282 uintptr_t ref_removed;
2277 2283 uint64_t ref_number;
2278 2284 boolean_t holder_is_str = B_FALSE;
2279 2285 char holder_str[128];
2280 2286 boolean_t removed = (boolean_t)arg;
2281 2287
2282 2288 if (!gotid) {
2283 2289 if (mdb_ctf_lookup_by_name("struct reference", &ref_id) == -1) {
2284 2290 mdb_warn("couldn't find struct reference");
2285 2291 return (WALK_ERR);
2286 2292 }
2287 2293 gotid = TRUE;
2288 2294 }
2289 2295
2290 2296 if (GETMEMBID(addr, &ref_id, ref_holder, ref_holder) ||
2291 2297 GETMEMBID(addr, &ref_id, ref_removed, ref_removed) ||
2292 2298 GETMEMBID(addr, &ref_id, ref_number, ref_number))
2293 2299 return (WALK_ERR);
2294 2300
2295 2301 if (mdb_readstr(holder_str, sizeof (holder_str), ref_holder) != -1)
2296 2302 holder_is_str = strisprint(holder_str);
2297 2303
2298 2304 if (removed)
2299 2305 mdb_printf("removed ");
2300 2306 mdb_printf("reference ");
2301 2307 if (ref_number != 1)
2302 2308 mdb_printf("with count=%llu ", ref_number);
2303 2309 mdb_printf("with tag %p", (void*)ref_holder);
2304 2310 if (holder_is_str)
2305 2311 mdb_printf(" \"%s\"", holder_str);
2306 2312 mdb_printf(", held at:\n");
2307 2313
2308 2314 (void) mdb_call_dcmd("whatis", addr, DCMD_ADDRSPEC, 0, NULL);
2309 2315
2310 2316 if (removed) {
2311 2317 mdb_printf("removed at:\n");
2312 2318 (void) mdb_call_dcmd("whatis", ref_removed,
2313 2319 DCMD_ADDRSPEC, 0, NULL);
2314 2320 }
2315 2321
2316 2322 mdb_printf("\n");
2317 2323
2318 2324 return (WALK_NEXT);
2319 2325 }
2320 2326
2321 2327 /* ARGSUSED */
2322 2328 static int
2323 2329 refcount(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
2324 2330 {
2325 2331 uint64_t rc_count, rc_removed_count;
2326 2332 uintptr_t rc_list, rc_removed;
2327 2333 static int gotid;
2328 2334 static mdb_ctf_id_t rc_id;
2329 2335 ulong_t off;
2330 2336
2331 2337 if (!(flags & DCMD_ADDRSPEC))
2332 2338 return (DCMD_USAGE);
2333 2339
2334 2340 if (!gotid) {
2335 2341 if (mdb_ctf_lookup_by_name("struct refcount", &rc_id) == -1) {
2336 2342 mdb_warn("couldn't find struct refcount");
2337 2343 return (DCMD_ERR);
2338 2344 }
2339 2345 gotid = TRUE;
2340 2346 }
2341 2347
2342 2348 if (GETMEMBID(addr, &rc_id, rc_count, rc_count) ||
2343 2349 GETMEMBID(addr, &rc_id, rc_removed_count, rc_removed_count))
2344 2350 return (DCMD_ERR);
2345 2351
2346 2352 mdb_printf("refcount_t at %p has %llu current holds, "
2347 2353 "%llu recently released holds\n",
2348 2354 addr, (longlong_t)rc_count, (longlong_t)rc_removed_count);
2349 2355
2350 2356 if (rc_count > 0)
2351 2357 mdb_printf("current holds:\n");
2352 2358 if (mdb_ctf_offsetof(rc_id, "rc_list", &off) == -1)
2353 2359 return (DCMD_ERR);
2354 2360 rc_list = addr + off/NBBY;
2355 2361 mdb_pwalk("list", reference_cb, (void*)B_FALSE, rc_list);
2356 2362
2357 2363 if (rc_removed_count > 0)
2358 2364 mdb_printf("released holds:\n");
2359 2365 if (mdb_ctf_offsetof(rc_id, "rc_removed", &off) == -1)
2360 2366 return (DCMD_ERR);
2361 2367 rc_removed = addr + off/NBBY;
2362 2368 mdb_pwalk("list", reference_cb, (void*)B_TRUE, rc_removed);
2363 2369
2364 2370 return (DCMD_OK);
2365 2371 }
2366 2372
2367 2373 /* ARGSUSED */
2368 2374 static int
2369 2375 sa_attr_table(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
2370 2376 {
2371 2377 sa_attr_table_t *table;
2372 2378 sa_os_t sa_os;
2373 2379 char *name;
2374 2380 int i;
2375 2381
2376 2382 if (mdb_vread(&sa_os, sizeof (sa_os_t), addr) == -1) {
2377 2383 mdb_warn("failed to read sa_os at %p", addr);
2378 2384 return (DCMD_ERR);
2379 2385 }
2380 2386
2381 2387 table = mdb_alloc(sizeof (sa_attr_table_t) * sa_os.sa_num_attrs,
2382 2388 UM_SLEEP | UM_GC);
2383 2389 name = mdb_alloc(MAXPATHLEN, UM_SLEEP | UM_GC);
2384 2390
2385 2391 if (mdb_vread(table, sizeof (sa_attr_table_t) * sa_os.sa_num_attrs,
2386 2392 (uintptr_t)sa_os.sa_attr_table) == -1) {
2387 2393 mdb_warn("failed to read sa_os at %p", addr);
2388 2394 return (DCMD_ERR);
2389 2395 }
2390 2396
2391 2397 mdb_printf("%<u>%-10s %-10s %-10s %-10s %s%</u>\n",
2392 2398 "ATTR ID", "REGISTERED", "LENGTH", "BSWAP", "NAME");
2393 2399 for (i = 0; i != sa_os.sa_num_attrs; i++) {
2394 2400 mdb_readstr(name, MAXPATHLEN, (uintptr_t)table[i].sa_name);
2395 2401 mdb_printf("%5x %8x %8x %8x %-s\n",
2396 2402 (int)table[i].sa_attr, (int)table[i].sa_registered,
2397 2403 (int)table[i].sa_length, table[i].sa_byteswap, name);
2398 2404 }
2399 2405
2400 2406 return (DCMD_OK);
2401 2407 }
2402 2408
2403 2409 static int
2404 2410 sa_get_off_table(uintptr_t addr, uint32_t **off_tab, int attr_count)
2405 2411 {
2406 2412 uintptr_t idx_table;
2407 2413
2408 2414 if (GETMEMB(addr, struct sa_idx_tab, sa_idx_tab, idx_table)) {
2409 2415 mdb_printf("can't find offset table in sa_idx_tab\n");
2410 2416 return (-1);
2411 2417 }
2412 2418
2413 2419 *off_tab = mdb_alloc(attr_count * sizeof (uint32_t),
2414 2420 UM_SLEEP | UM_GC);
2415 2421
2416 2422 if (mdb_vread(*off_tab,
2417 2423 attr_count * sizeof (uint32_t), idx_table) == -1) {
2418 2424 mdb_warn("failed to attribute offset table %p", idx_table);
2419 2425 return (-1);
2420 2426 }
2421 2427
2422 2428 return (DCMD_OK);
2423 2429 }
2424 2430
2425 2431 /*ARGSUSED*/
2426 2432 static int
2427 2433 sa_attr_print(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
2428 2434 {
2429 2435 uint32_t *offset_tab;
2430 2436 int attr_count;
2431 2437 uint64_t attr_id;
2432 2438 uintptr_t attr_addr;
2433 2439 uintptr_t bonus_tab, spill_tab;
2434 2440 uintptr_t db_bonus, db_spill;
2435 2441 uintptr_t os, os_sa;
2436 2442 uintptr_t db_data;
2437 2443
2438 2444 if (argc != 1)
2439 2445 return (DCMD_USAGE);
2440 2446
2441 2447 if (argv[0].a_type == MDB_TYPE_STRING)
2442 2448 attr_id = mdb_strtoull(argv[0].a_un.a_str);
2443 2449 else
2444 2450 return (DCMD_USAGE);
2445 2451
2446 2452 if (GETMEMB(addr, struct sa_handle, sa_bonus_tab, bonus_tab) ||
2447 2453 GETMEMB(addr, struct sa_handle, sa_spill_tab, spill_tab) ||
2448 2454 GETMEMB(addr, struct sa_handle, sa_os, os) ||
2449 2455 GETMEMB(addr, struct sa_handle, sa_bonus, db_bonus) ||
2450 2456 GETMEMB(addr, struct sa_handle, sa_spill, db_spill)) {
2451 2457 mdb_printf("Can't find necessary information in sa_handle "
2452 2458 "in sa_handle\n");
2453 2459 return (DCMD_ERR);
2454 2460 }
2455 2461
2456 2462 if (GETMEMB(os, struct objset, os_sa, os_sa)) {
2457 2463 mdb_printf("Can't find os_sa in objset\n");
2458 2464 return (DCMD_ERR);
2459 2465 }
2460 2466
2461 2467 if (GETMEMB(os_sa, struct sa_os, sa_num_attrs, attr_count)) {
2462 2468 mdb_printf("Can't find sa_num_attrs\n");
2463 2469 return (DCMD_ERR);
2464 2470 }
2465 2471
2466 2472 if (attr_id > attr_count) {
2467 2473 mdb_printf("attribute id number is out of range\n");
2468 2474 return (DCMD_ERR);
2469 2475 }
2470 2476
2471 2477 if (bonus_tab) {
2472 2478 if (sa_get_off_table(bonus_tab, &offset_tab,
2473 2479 attr_count) == -1) {
2474 2480 return (DCMD_ERR);
2475 2481 }
2476 2482
2477 2483 if (GETMEMB(db_bonus, struct dmu_buf, db_data, db_data)) {
2478 2484 mdb_printf("can't find db_data in bonus dbuf\n");
2479 2485 return (DCMD_ERR);
2480 2486 }
2481 2487 }
2482 2488
2483 2489 if (bonus_tab && !TOC_ATTR_PRESENT(offset_tab[attr_id]) &&
2484 2490 spill_tab == NULL) {
2485 2491 mdb_printf("Attribute does not exist\n");
2486 2492 return (DCMD_ERR);
2487 2493 } else if (!TOC_ATTR_PRESENT(offset_tab[attr_id]) && spill_tab) {
2488 2494 if (sa_get_off_table(spill_tab, &offset_tab,
2489 2495 attr_count) == -1) {
2490 2496 return (DCMD_ERR);
2491 2497 }
2492 2498 if (GETMEMB(db_spill, struct dmu_buf, db_data, db_data)) {
2493 2499 mdb_printf("can't find db_data in spill dbuf\n");
2494 2500 return (DCMD_ERR);
2495 2501 }
2496 2502 if (!TOC_ATTR_PRESENT(offset_tab[attr_id])) {
2497 2503 mdb_printf("Attribute does not exist\n");
2498 2504 return (DCMD_ERR);
2499 2505 }
2500 2506 }
2501 2507 attr_addr = db_data + TOC_OFF(offset_tab[attr_id]);
2502 2508 mdb_printf("%p\n", attr_addr);
2503 2509 return (DCMD_OK);
2504 2510 }
2505 2511
2506 2512 /* ARGSUSED */
2507 2513 static int
2508 2514 zfs_ace_print_common(uintptr_t addr, uint_t flags,
2509 2515 uint64_t id, uint32_t access_mask, uint16_t ace_flags,
2510 2516 uint16_t ace_type, int verbose)
2511 2517 {
2512 2518 if (DCMD_HDRSPEC(flags) && !verbose)
2513 2519 mdb_printf("%<u>%-?s %-8s %-8s %-8s %s%</u>\n",
2514 2520 "ADDR", "FLAGS", "MASK", "TYPE", "ID");
2515 2521
2516 2522 if (!verbose) {
2517 2523 mdb_printf("%0?p %-8x %-8x %-8x %-llx\n", addr,
2518 2524 ace_flags, access_mask, ace_type, id);
2519 2525 return (DCMD_OK);
2520 2526 }
2521 2527
2522 2528 switch (ace_flags & ACE_TYPE_FLAGS) {
2523 2529 case ACE_OWNER:
2524 2530 mdb_printf("owner@:");
2525 2531 break;
2526 2532 case (ACE_IDENTIFIER_GROUP | ACE_GROUP):
2527 2533 mdb_printf("group@:");
2528 2534 break;
2529 2535 case ACE_EVERYONE:
2530 2536 mdb_printf("everyone@:");
2531 2537 break;
2532 2538 case ACE_IDENTIFIER_GROUP:
2533 2539 mdb_printf("group:%llx:", (u_longlong_t)id);
2534 2540 break;
2535 2541 case 0: /* User entry */
2536 2542 mdb_printf("user:%llx:", (u_longlong_t)id);
2537 2543 break;
2538 2544 }
2539 2545
2540 2546 /* print out permission mask */
2541 2547 if (access_mask & ACE_READ_DATA)
2542 2548 mdb_printf("r");
2543 2549 else
2544 2550 mdb_printf("-");
2545 2551 if (access_mask & ACE_WRITE_DATA)
2546 2552 mdb_printf("w");
2547 2553 else
2548 2554 mdb_printf("-");
2549 2555 if (access_mask & ACE_EXECUTE)
2550 2556 mdb_printf("x");
2551 2557 else
2552 2558 mdb_printf("-");
2553 2559 if (access_mask & ACE_APPEND_DATA)
2554 2560 mdb_printf("p");
2555 2561 else
2556 2562 mdb_printf("-");
2557 2563 if (access_mask & ACE_DELETE)
2558 2564 mdb_printf("d");
2559 2565 else
2560 2566 mdb_printf("-");
2561 2567 if (access_mask & ACE_DELETE_CHILD)
2562 2568 mdb_printf("D");
2563 2569 else
2564 2570 mdb_printf("-");
2565 2571 if (access_mask & ACE_READ_ATTRIBUTES)
2566 2572 mdb_printf("a");
2567 2573 else
2568 2574 mdb_printf("-");
2569 2575 if (access_mask & ACE_WRITE_ATTRIBUTES)
2570 2576 mdb_printf("A");
2571 2577 else
2572 2578 mdb_printf("-");
2573 2579 if (access_mask & ACE_READ_NAMED_ATTRS)
2574 2580 mdb_printf("R");
2575 2581 else
2576 2582 mdb_printf("-");
2577 2583 if (access_mask & ACE_WRITE_NAMED_ATTRS)
2578 2584 mdb_printf("W");
2579 2585 else
2580 2586 mdb_printf("-");
2581 2587 if (access_mask & ACE_READ_ACL)
2582 2588 mdb_printf("c");
2583 2589 else
2584 2590 mdb_printf("-");
2585 2591 if (access_mask & ACE_WRITE_ACL)
2586 2592 mdb_printf("C");
2587 2593 else
2588 2594 mdb_printf("-");
2589 2595 if (access_mask & ACE_WRITE_OWNER)
2590 2596 mdb_printf("o");
2591 2597 else
2592 2598 mdb_printf("-");
2593 2599 if (access_mask & ACE_SYNCHRONIZE)
2594 2600 mdb_printf("s");
2595 2601 else
2596 2602 mdb_printf("-");
2597 2603
2598 2604 mdb_printf(":");
2599 2605
2600 2606 /* Print out inheritance flags */
2601 2607 if (ace_flags & ACE_FILE_INHERIT_ACE)
2602 2608 mdb_printf("f");
2603 2609 else
2604 2610 mdb_printf("-");
2605 2611 if (ace_flags & ACE_DIRECTORY_INHERIT_ACE)
2606 2612 mdb_printf("d");
2607 2613 else
2608 2614 mdb_printf("-");
2609 2615 if (ace_flags & ACE_INHERIT_ONLY_ACE)
2610 2616 mdb_printf("i");
2611 2617 else
2612 2618 mdb_printf("-");
2613 2619 if (ace_flags & ACE_NO_PROPAGATE_INHERIT_ACE)
2614 2620 mdb_printf("n");
2615 2621 else
2616 2622 mdb_printf("-");
2617 2623 if (ace_flags & ACE_SUCCESSFUL_ACCESS_ACE_FLAG)
2618 2624 mdb_printf("S");
2619 2625 else
2620 2626 mdb_printf("-");
2621 2627 if (ace_flags & ACE_FAILED_ACCESS_ACE_FLAG)
2622 2628 mdb_printf("F");
2623 2629 else
2624 2630 mdb_printf("-");
2625 2631 if (ace_flags & ACE_INHERITED_ACE)
2626 2632 mdb_printf("I");
2627 2633 else
2628 2634 mdb_printf("-");
2629 2635
2630 2636 switch (ace_type) {
2631 2637 case ACE_ACCESS_ALLOWED_ACE_TYPE:
2632 2638 mdb_printf(":allow\n");
2633 2639 break;
2634 2640 case ACE_ACCESS_DENIED_ACE_TYPE:
2635 2641 mdb_printf(":deny\n");
2636 2642 break;
2637 2643 case ACE_SYSTEM_AUDIT_ACE_TYPE:
2638 2644 mdb_printf(":audit\n");
2639 2645 break;
2640 2646 case ACE_SYSTEM_ALARM_ACE_TYPE:
2641 2647 mdb_printf(":alarm\n");
2642 2648 break;
2643 2649 default:
2644 2650 mdb_printf(":?\n");
2645 2651 }
2646 2652 return (DCMD_OK);
2647 2653 }
2648 2654
2649 2655 /* ARGSUSED */
2650 2656 static int
2651 2657 zfs_ace_print(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
2652 2658 {
2653 2659 zfs_ace_t zace;
2654 2660 int verbose = FALSE;
2655 2661 uint64_t id;
2656 2662
2657 2663 if (!(flags & DCMD_ADDRSPEC))
2658 2664 return (DCMD_USAGE);
2659 2665
2660 2666 if (mdb_getopts(argc, argv,
2661 2667 'v', MDB_OPT_SETBITS, TRUE, &verbose, TRUE, NULL) != argc)
2662 2668 return (DCMD_USAGE);
2663 2669
2664 2670 if (mdb_vread(&zace, sizeof (zfs_ace_t), addr) == -1) {
2665 2671 mdb_warn("failed to read zfs_ace_t");
2666 2672 return (DCMD_ERR);
2667 2673 }
2668 2674
2669 2675 if ((zace.z_hdr.z_flags & ACE_TYPE_FLAGS) == 0 ||
2670 2676 (zace.z_hdr.z_flags & ACE_TYPE_FLAGS) == ACE_IDENTIFIER_GROUP)
2671 2677 id = zace.z_fuid;
2672 2678 else
2673 2679 id = -1;
2674 2680
2675 2681 return (zfs_ace_print_common(addr, flags, id, zace.z_hdr.z_access_mask,
2676 2682 zace.z_hdr.z_flags, zace.z_hdr.z_type, verbose));
2677 2683 }
2678 2684
2679 2685 /* ARGSUSED */
2680 2686 static int
2681 2687 zfs_ace0_print(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
2682 2688 {
2683 2689 ace_t ace;
2684 2690 uint64_t id;
2685 2691 int verbose = FALSE;
2686 2692
2687 2693 if (!(flags & DCMD_ADDRSPEC))
2688 2694 return (DCMD_USAGE);
2689 2695
2690 2696 if (mdb_getopts(argc, argv,
2691 2697 'v', MDB_OPT_SETBITS, TRUE, &verbose, TRUE, NULL) != argc)
2692 2698 return (DCMD_USAGE);
2693 2699
2694 2700 if (mdb_vread(&ace, sizeof (ace_t), addr) == -1) {
2695 2701 mdb_warn("failed to read ace_t");
2696 2702 return (DCMD_ERR);
2697 2703 }
2698 2704
2699 2705 if ((ace.a_flags & ACE_TYPE_FLAGS) == 0 ||
2700 2706 (ace.a_flags & ACE_TYPE_FLAGS) == ACE_IDENTIFIER_GROUP)
2701 2707 id = ace.a_who;
2702 2708 else
2703 2709 id = -1;
2704 2710
2705 2711 return (zfs_ace_print_common(addr, flags, id, ace.a_access_mask,
2706 2712 ace.a_flags, ace.a_type, verbose));
2707 2713 }
2708 2714
2709 2715 typedef struct acl_dump_args {
2710 2716 int a_argc;
2711 2717 const mdb_arg_t *a_argv;
2712 2718 uint16_t a_version;
2713 2719 int a_flags;
2714 2720 } acl_dump_args_t;
2715 2721
2716 2722 /* ARGSUSED */
2717 2723 static int
2718 2724 acl_aces_cb(uintptr_t addr, const void *unknown, void *arg)
2719 2725 {
2720 2726 acl_dump_args_t *acl_args = (acl_dump_args_t *)arg;
2721 2727
2722 2728 if (acl_args->a_version == 1) {
2723 2729 if (mdb_call_dcmd("zfs_ace", addr,
2724 2730 DCMD_ADDRSPEC|acl_args->a_flags, acl_args->a_argc,
2725 2731 acl_args->a_argv) != DCMD_OK) {
2726 2732 return (WALK_ERR);
2727 2733 }
2728 2734 } else {
2729 2735 if (mdb_call_dcmd("zfs_ace0", addr,
2730 2736 DCMD_ADDRSPEC|acl_args->a_flags, acl_args->a_argc,
2731 2737 acl_args->a_argv) != DCMD_OK) {
2732 2738 return (WALK_ERR);
2733 2739 }
2734 2740 }
2735 2741 acl_args->a_flags = DCMD_LOOP;
2736 2742 return (WALK_NEXT);
2737 2743 }
2738 2744
2739 2745 /* ARGSUSED */
2740 2746 static int
2741 2747 acl_cb(uintptr_t addr, const void *unknown, void *arg)
2742 2748 {
2743 2749 acl_dump_args_t *acl_args = (acl_dump_args_t *)arg;
2744 2750
2745 2751 if (acl_args->a_version == 1) {
2746 2752 if (mdb_pwalk("zfs_acl_node_aces", acl_aces_cb,
2747 2753 arg, addr) != 0) {
2748 2754 mdb_warn("can't walk ACEs");
2749 2755 return (DCMD_ERR);
2750 2756 }
2751 2757 } else {
2752 2758 if (mdb_pwalk("zfs_acl_node_aces0", acl_aces_cb,
2753 2759 arg, addr) != 0) {
2754 2760 mdb_warn("can't walk ACEs");
2755 2761 return (DCMD_ERR);
2756 2762 }
2757 2763 }
2758 2764 return (WALK_NEXT);
2759 2765 }
2760 2766
2761 2767 /* ARGSUSED */
2762 2768 static int
2763 2769 zfs_acl_dump(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
2764 2770 {
2765 2771 zfs_acl_t zacl;
2766 2772 int verbose = FALSE;
2767 2773 acl_dump_args_t acl_args;
2768 2774
2769 2775 if (!(flags & DCMD_ADDRSPEC))
2770 2776 return (DCMD_USAGE);
2771 2777
2772 2778 if (mdb_getopts(argc, argv,
2773 2779 'v', MDB_OPT_SETBITS, TRUE, &verbose, TRUE, NULL) != argc)
2774 2780 return (DCMD_USAGE);
2775 2781
2776 2782 if (mdb_vread(&zacl, sizeof (zfs_acl_t), addr) == -1) {
2777 2783 mdb_warn("failed to read zfs_acl_t");
2778 2784 return (DCMD_ERR);
2779 2785 }
2780 2786
2781 2787 acl_args.a_argc = argc;
2782 2788 acl_args.a_argv = argv;
2783 2789 acl_args.a_version = zacl.z_version;
2784 2790 acl_args.a_flags = DCMD_LOOPFIRST;
2785 2791
2786 2792 if (mdb_pwalk("zfs_acl_node", acl_cb, &acl_args, addr) != 0) {
2787 2793 mdb_warn("can't walk ACL");
2788 2794 return (DCMD_ERR);
2789 2795 }
2790 2796
2791 2797 return (DCMD_OK);
2792 2798 }
2793 2799
2794 2800 /* ARGSUSED */
2795 2801 static int
2796 2802 zfs_acl_node_walk_init(mdb_walk_state_t *wsp)
2797 2803 {
2798 2804 if (wsp->walk_addr == NULL) {
2799 2805 mdb_warn("must supply address of zfs_acl_node_t\n");
2800 2806 return (WALK_ERR);
2801 2807 }
2802 2808
2803 2809 wsp->walk_addr += OFFSETOF(zfs_acl_t, z_acl);
2804 2810
2805 2811 if (mdb_layered_walk("list", wsp) == -1) {
2806 2812 mdb_warn("failed to walk 'list'\n");
2807 2813 return (WALK_ERR);
2808 2814 }
2809 2815
2810 2816 return (WALK_NEXT);
2811 2817 }
2812 2818
2813 2819 static int
2814 2820 zfs_acl_node_walk_step(mdb_walk_state_t *wsp)
2815 2821 {
2816 2822 zfs_acl_node_t aclnode;
2817 2823
2818 2824 if (mdb_vread(&aclnode, sizeof (zfs_acl_node_t),
2819 2825 wsp->walk_addr) == -1) {
2820 2826 mdb_warn("failed to read zfs_acl_node at %p", wsp->walk_addr);
2821 2827 return (WALK_ERR);
2822 2828 }
2823 2829
2824 2830 return (wsp->walk_callback(wsp->walk_addr, &aclnode, wsp->walk_cbdata));
2825 2831 }
2826 2832
2827 2833 typedef struct ace_walk_data {
2828 2834 int ace_count;
2829 2835 int ace_version;
2830 2836 } ace_walk_data_t;
2831 2837
2832 2838 static int
2833 2839 zfs_aces_walk_init_common(mdb_walk_state_t *wsp, int version,
2834 2840 int ace_count, uintptr_t ace_data)
2835 2841 {
2836 2842 ace_walk_data_t *ace_walk_data;
2837 2843
2838 2844 if (wsp->walk_addr == NULL) {
2839 2845 mdb_warn("must supply address of zfs_acl_node_t\n");
2840 2846 return (WALK_ERR);
2841 2847 }
2842 2848
2843 2849 ace_walk_data = mdb_alloc(sizeof (ace_walk_data_t), UM_SLEEP | UM_GC);
2844 2850
2845 2851 ace_walk_data->ace_count = ace_count;
2846 2852 ace_walk_data->ace_version = version;
2847 2853
2848 2854 wsp->walk_addr = ace_data;
2849 2855 wsp->walk_data = ace_walk_data;
2850 2856
2851 2857 return (WALK_NEXT);
2852 2858 }
2853 2859
2854 2860 static int
2855 2861 zfs_acl_node_aces_walk_init_common(mdb_walk_state_t *wsp, int version)
2856 2862 {
2857 2863 static int gotid;
2858 2864 static mdb_ctf_id_t acl_id;
2859 2865 int z_ace_count;
2860 2866 uintptr_t z_acldata;
2861 2867
2862 2868 if (!gotid) {
2863 2869 if (mdb_ctf_lookup_by_name("struct zfs_acl_node",
2864 2870 &acl_id) == -1) {
2865 2871 mdb_warn("couldn't find struct zfs_acl_node");
2866 2872 return (DCMD_ERR);
2867 2873 }
2868 2874 gotid = TRUE;
2869 2875 }
2870 2876
2871 2877 if (GETMEMBID(wsp->walk_addr, &acl_id, z_ace_count, z_ace_count)) {
2872 2878 return (DCMD_ERR);
2873 2879 }
2874 2880 if (GETMEMBID(wsp->walk_addr, &acl_id, z_acldata, z_acldata)) {
2875 2881 return (DCMD_ERR);
2876 2882 }
2877 2883
2878 2884 return (zfs_aces_walk_init_common(wsp, version,
2879 2885 z_ace_count, z_acldata));
2880 2886 }
2881 2887
2882 2888 /* ARGSUSED */
2883 2889 static int
2884 2890 zfs_acl_node_aces_walk_init(mdb_walk_state_t *wsp)
2885 2891 {
2886 2892 return (zfs_acl_node_aces_walk_init_common(wsp, 1));
2887 2893 }
2888 2894
2889 2895 /* ARGSUSED */
2890 2896 static int
2891 2897 zfs_acl_node_aces0_walk_init(mdb_walk_state_t *wsp)
2892 2898 {
2893 2899 return (zfs_acl_node_aces_walk_init_common(wsp, 0));
2894 2900 }
2895 2901
2896 2902 static int
2897 2903 zfs_aces_walk_step(mdb_walk_state_t *wsp)
2898 2904 {
2899 2905 ace_walk_data_t *ace_data = wsp->walk_data;
2900 2906 zfs_ace_t zace;
2901 2907 ace_t *acep;
2902 2908 int status;
2903 2909 int entry_type;
2904 2910 int allow_type;
2905 2911 uintptr_t ptr;
2906 2912
2907 2913 if (ace_data->ace_count == 0)
2908 2914 return (WALK_DONE);
2909 2915
2910 2916 if (mdb_vread(&zace, sizeof (zfs_ace_t), wsp->walk_addr) == -1) {
2911 2917 mdb_warn("failed to read zfs_ace_t at %#lx",
2912 2918 wsp->walk_addr);
2913 2919 return (WALK_ERR);
2914 2920 }
2915 2921
2916 2922 switch (ace_data->ace_version) {
2917 2923 case 0:
2918 2924 acep = (ace_t *)&zace;
2919 2925 entry_type = acep->a_flags & ACE_TYPE_FLAGS;
2920 2926 allow_type = acep->a_type;
2921 2927 break;
2922 2928 case 1:
2923 2929 entry_type = zace.z_hdr.z_flags & ACE_TYPE_FLAGS;
2924 2930 allow_type = zace.z_hdr.z_type;
2925 2931 break;
2926 2932 default:
2927 2933 return (WALK_ERR);
2928 2934 }
2929 2935
2930 2936 ptr = (uintptr_t)wsp->walk_addr;
2931 2937 switch (entry_type) {
2932 2938 case ACE_OWNER:
2933 2939 case ACE_EVERYONE:
2934 2940 case (ACE_IDENTIFIER_GROUP | ACE_GROUP):
2935 2941 ptr += ace_data->ace_version == 0 ?
2936 2942 sizeof (ace_t) : sizeof (zfs_ace_hdr_t);
2937 2943 break;
2938 2944 case ACE_IDENTIFIER_GROUP:
2939 2945 default:
2940 2946 switch (allow_type) {
2941 2947 case ACE_ACCESS_ALLOWED_OBJECT_ACE_TYPE:
2942 2948 case ACE_ACCESS_DENIED_OBJECT_ACE_TYPE:
2943 2949 case ACE_SYSTEM_AUDIT_OBJECT_ACE_TYPE:
2944 2950 case ACE_SYSTEM_ALARM_OBJECT_ACE_TYPE:
2945 2951 ptr += ace_data->ace_version == 0 ?
2946 2952 sizeof (ace_t) : sizeof (zfs_object_ace_t);
2947 2953 break;
2948 2954 default:
2949 2955 ptr += ace_data->ace_version == 0 ?
2950 2956 sizeof (ace_t) : sizeof (zfs_ace_t);
2951 2957 break;
2952 2958 }
2953 2959 }
2954 2960
2955 2961 ace_data->ace_count--;
2956 2962 status = wsp->walk_callback(wsp->walk_addr,
2957 2963 (void *)(uintptr_t)&zace, wsp->walk_cbdata);
2958 2964
2959 2965 wsp->walk_addr = ptr;
2960 2966 return (status);
2961 2967 }
2962 2968
2963 2969 /*
2964 2970 * MDB module linkage information:
2965 2971 *
2966 2972 * We declare a list of structures describing our dcmds, and a function
2967 2973 * named _mdb_init to return a pointer to our module information.
2968 2974 */
2969 2975
2970 2976 static const mdb_dcmd_t dcmds[] = {
2971 2977 { "arc", "[-bkmg]", "print ARC variables", arc_print },
2972 2978 { "blkptr", ":", "print blkptr_t", blkptr },
2973 2979 { "dbuf", ":", "print dmu_buf_impl_t", dbuf },
2974 2980 { "dbuf_stats", ":", "dbuf stats", dbuf_stats },
2975 2981 { "dbufs",
2976 2982 "\t[-O objset_t*] [-n objset_name | \"mos\"] "
2977 2983 "[-o object | \"mdn\"] \n"
2978 2984 "\t[-l level] [-b blkid | \"bonus\"]",
2979 2985 "find dmu_buf_impl_t's that match specified criteria", dbufs },
2980 2986 { "abuf_find", "dva_word[0] dva_word[1]",
2981 2987 "find arc_buf_hdr_t of a specified DVA",
2982 2988 abuf_find },
2983 2989 { "spa", "?[-cv]", "spa_t summary", spa_print },
2984 2990 { "spa_config", ":", "print spa_t configuration", spa_print_config },
2985 2991 { "spa_verify", ":", "verify spa_t consistency", spa_verify },
2986 2992 { "spa_space", ":[-b]", "print spa_t on-disk space usage", spa_space },
2987 2993 { "spa_vdevs", ":", "given a spa_t, print vdev summary", spa_vdevs },
2988 2994 { "vdev", ":[-re]\n"
2989 2995 "\t-r display recursively\n"
2990 2996 "\t-e print statistics",
2991 2997 "vdev_t summary", vdev_print },
2992 2998 { "zio", ":[cpr]\n"
2993 2999 "\t-c display children\n"
2994 3000 "\t-p display parents\n"
2995 3001 "\t-r display recursively",
2996 3002 "zio_t summary", zio_print },
2997 3003 { "zio_state", "?", "print out all zio_t structures on system or "
2998 3004 "for a particular pool", zio_state },
2999 3005 { "zfs_blkstats", ":[-v]",
3000 3006 "given a spa_t, print block type stats from last scrub",
3001 3007 zfs_blkstats },
3002 3008 { "zfs_params", "", "print zfs tunable parameters", zfs_params },
3003 3009 { "refcount", "", "print refcount_t holders", refcount },
3004 3010 { "zap_leaf", "", "print zap_leaf_phys_t", zap_leaf },
3005 3011 { "zfs_aces", ":[-v]", "print all ACEs from a zfs_acl_t",
3006 3012 zfs_acl_dump },
3007 3013 { "zfs_ace", ":[-v]", "print zfs_ace", zfs_ace_print },
3008 3014 { "zfs_ace0", ":[-v]", "print zfs_ace0", zfs_ace0_print },
3009 3015 { "sa_attr_table", ":", "print SA attribute table from sa_os_t",
3010 3016 sa_attr_table},
3011 3017 { "sa_attr", ": attr_id",
3012 3018 "print SA attribute address when given sa_handle_t", sa_attr_print},
3013 3019 { "zfs_dbgmsg", ":[-v]",
3014 3020 "print zfs debug log", dbgmsg},
3015 3021 { NULL }
3016 3022 };
3017 3023
3018 3024 static const mdb_walker_t walkers[] = {
3019 3025 { "zms_freelist", "walk ZFS metaslab freelist",
3020 3026 freelist_walk_init, freelist_walk_step, NULL },
3021 3027 { "txg_list", "given any txg_list_t *, walk all entries in all txgs",
3022 3028 txg_list_walk_init, txg_list_walk_step, NULL },
3023 3029 { "txg_list0", "given any txg_list_t *, walk all entries in txg 0",
3024 3030 txg_list0_walk_init, txg_list_walk_step, NULL },
3025 3031 { "txg_list1", "given any txg_list_t *, walk all entries in txg 1",
3026 3032 txg_list1_walk_init, txg_list_walk_step, NULL },
3027 3033 { "txg_list2", "given any txg_list_t *, walk all entries in txg 2",
3028 3034 txg_list2_walk_init, txg_list_walk_step, NULL },
3029 3035 { "txg_list3", "given any txg_list_t *, walk all entries in txg 3",
3030 3036 txg_list3_walk_init, txg_list_walk_step, NULL },
3031 3037 { "zio", "walk all zio structures, optionally for a particular spa_t",
3032 3038 zio_walk_init, zio_walk_step, NULL },
3033 3039 { "zio_root", "walk all root zio_t structures, optionally for a "
3034 3040 "particular spa_t",
3035 3041 zio_walk_init, zio_walk_root_step, NULL },
3036 3042 { "spa", "walk all spa_t entries in the namespace",
3037 3043 spa_walk_init, spa_walk_step, NULL },
3038 3044 { "metaslab", "given a spa_t *, walk all metaslab_t structures",
3039 3045 metaslab_walk_init, metaslab_walk_step, NULL },
3040 3046 { "zfs_acl_node", "given a zfs_acl_t, walk all zfs_acl_nodes",
3041 3047 zfs_acl_node_walk_init, zfs_acl_node_walk_step, NULL },
3042 3048 { "zfs_acl_node_aces", "given a zfs_acl_node_t, walk all ACEs",
3043 3049 zfs_acl_node_aces_walk_init, zfs_aces_walk_step, NULL },
3044 3050 { "zfs_acl_node_aces0",
3045 3051 "given a zfs_acl_node_t, walk all ACEs as ace_t",
3046 3052 zfs_acl_node_aces0_walk_init, zfs_aces_walk_step, NULL },
3047 3053 { NULL }
3048 3054 };
3049 3055
3050 3056 static const mdb_modinfo_t modinfo = {
3051 3057 MDB_API_VERSION, dcmds, walkers
3052 3058 };
3053 3059
3054 3060 const mdb_modinfo_t *
3055 3061 _mdb_init(void)
3056 3062 {
3057 3063 return (&modinfo);
3058 3064 }
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