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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
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 24 * Copyright (c) 2012, 2014 by Delphix. All rights reserved.
25 25 */
26 26
27 27 /* Portions Copyright 2010 Robert Milkowski */
28 28
29 29 #include <mdb/mdb_ctf.h>
30 30 #include <sys/zfs_context.h>
31 31 #include <sys/mdb_modapi.h>
32 32 #include <sys/dbuf.h>
33 33 #include <sys/dmu_objset.h>
34 34 #include <sys/dsl_dir.h>
35 35 #include <sys/dsl_pool.h>
36 36 #include <sys/metaslab_impl.h>
37 37 #include <sys/space_map.h>
38 38 #include <sys/list.h>
39 39 #include <sys/vdev_impl.h>
40 40 #include <sys/zap_leaf.h>
41 41 #include <sys/zap_impl.h>
42 42 #include <ctype.h>
43 43 #include <sys/zfs_acl.h>
44 44 #include <sys/sa_impl.h>
45 45
46 46 #ifdef _KERNEL
47 47 #define ZFS_OBJ_NAME "zfs"
48 48 extern int64_t mdb_gethrtime(void);
49 49 #else
50 50 #define ZFS_OBJ_NAME "libzpool.so.1"
51 51 #endif
52 52
53 53 #define ZFS_STRUCT "struct " ZFS_OBJ_NAME "`"
54 54
55 55 #ifndef _KERNEL
56 56 int aok;
57 57 #endif
58 58
59 59 enum spa_flags {
60 60 SPA_FLAG_CONFIG = 1 << 0,
61 61 SPA_FLAG_VDEVS = 1 << 1,
62 62 SPA_FLAG_ERRORS = 1 << 2,
63 63 SPA_FLAG_METASLAB_GROUPS = 1 << 3,
64 64 SPA_FLAG_METASLABS = 1 << 4,
65 65 SPA_FLAG_HISTOGRAMS = 1 << 5
66 66 };
67 67
68 68 #define SPA_FLAG_ALL_VDEV \
69 69 (SPA_FLAG_VDEVS | SPA_FLAG_ERRORS | SPA_FLAG_METASLAB_GROUPS | \
70 70 SPA_FLAG_METASLABS | SPA_FLAG_HISTOGRAMS)
71 71
72 72 static int
73 73 getmember(uintptr_t addr, const char *type, mdb_ctf_id_t *idp,
74 74 const char *member, int len, void *buf)
75 75 {
76 76 mdb_ctf_id_t id;
77 77 ulong_t off;
78 78 char name[64];
79 79
80 80 if (idp == NULL) {
81 81 if (mdb_ctf_lookup_by_name(type, &id) == -1) {
82 82 mdb_warn("couldn't find type %s", type);
83 83 return (DCMD_ERR);
84 84 }
85 85 idp = &id;
86 86 } else {
87 87 type = name;
88 88 mdb_ctf_type_name(*idp, name, sizeof (name));
89 89 }
90 90
91 91 if (mdb_ctf_offsetof(*idp, member, &off) == -1) {
92 92 mdb_warn("couldn't find member %s of type %s\n", member, type);
93 93 return (DCMD_ERR);
94 94 }
95 95 if (off % 8 != 0) {
96 96 mdb_warn("member %s of type %s is unsupported bitfield",
97 97 member, type);
98 98 return (DCMD_ERR);
99 99 }
100 100 off /= 8;
101 101
102 102 if (mdb_vread(buf, len, addr + off) == -1) {
103 103 mdb_warn("failed to read %s from %s at %p",
104 104 member, type, addr + off);
105 105 return (DCMD_ERR);
106 106 }
107 107 /* mdb_warn("read %s from %s at %p+%llx\n", member, type, addr, off); */
108 108
109 109 return (0);
110 110 }
111 111
112 112 #define GETMEMB(addr, structname, member, dest) \
113 113 getmember(addr, ZFS_STRUCT structname, NULL, #member, \
114 114 sizeof (dest), &(dest))
115 115
116 116 #define GETMEMBID(addr, ctfid, member, dest) \
117 117 getmember(addr, NULL, ctfid, #member, sizeof (dest), &(dest))
118 118
119 119 static boolean_t
120 120 strisprint(const char *cp)
121 121 {
122 122 for (; *cp; cp++) {
123 123 if (!isprint(*cp))
124 124 return (B_FALSE);
125 125 }
126 126 return (B_TRUE);
127 127 }
128 128
129 129 #define NICENUM_BUFLEN 6
130 130
131 131 static int
132 132 snprintfrac(char *buf, int len,
133 133 uint64_t numerator, uint64_t denom, int frac_digits)
134 134 {
135 135 int mul = 1;
136 136 int whole, frac, i;
137 137
138 138 for (i = frac_digits; i; i--)
139 139 mul *= 10;
140 140 whole = numerator / denom;
141 141 frac = mul * numerator / denom - mul * whole;
142 142 return (mdb_snprintf(buf, len, "%u.%0*u", whole, frac_digits, frac));
143 143 }
144 144
145 145 static void
146 146 mdb_nicenum(uint64_t num, char *buf)
147 147 {
148 148 uint64_t n = num;
149 149 int index = 0;
150 150 char *u;
151 151
152 152 while (n >= 1024) {
153 153 n = (n + (1024 / 2)) / 1024; /* Round up or down */
154 154 index++;
155 155 }
156 156
157 157 u = &" \0K\0M\0G\0T\0P\0E\0"[index*2];
158 158
159 159 if (index == 0) {
160 160 (void) mdb_snprintf(buf, NICENUM_BUFLEN, "%llu",
161 161 (u_longlong_t)n);
162 162 } else if (n < 10 && (num & (num - 1)) != 0) {
163 163 (void) snprintfrac(buf, NICENUM_BUFLEN,
164 164 num, 1ULL << 10 * index, 2);
165 165 strcat(buf, u);
166 166 } else if (n < 100 && (num & (num - 1)) != 0) {
167 167 (void) snprintfrac(buf, NICENUM_BUFLEN,
168 168 num, 1ULL << 10 * index, 1);
169 169 strcat(buf, u);
170 170 } else {
171 171 (void) mdb_snprintf(buf, NICENUM_BUFLEN, "%llu%s",
172 172 (u_longlong_t)n, u);
173 173 }
174 174 }
175 175
176 176 static int verbose;
177 177
178 178 static int
179 179 freelist_walk_init(mdb_walk_state_t *wsp)
180 180 {
181 181 if (wsp->walk_addr == NULL) {
182 182 mdb_warn("must supply starting address\n");
183 183 return (WALK_ERR);
184 184 }
185 185
186 186 wsp->walk_data = 0; /* Index into the freelist */
187 187 return (WALK_NEXT);
188 188 }
189 189
190 190 static int
191 191 freelist_walk_step(mdb_walk_state_t *wsp)
192 192 {
193 193 uint64_t entry;
194 194 uintptr_t number = (uintptr_t)wsp->walk_data;
195 195 char *ddata[] = { "ALLOC", "FREE", "CONDENSE", "INVALID",
196 196 "INVALID", "INVALID", "INVALID", "INVALID" };
197 197 int mapshift = SPA_MINBLOCKSHIFT;
198 198
199 199 if (mdb_vread(&entry, sizeof (entry), wsp->walk_addr) == -1) {
200 200 mdb_warn("failed to read freelist entry %p", wsp->walk_addr);
201 201 return (WALK_DONE);
202 202 }
203 203 wsp->walk_addr += sizeof (entry);
204 204 wsp->walk_data = (void *)(number + 1);
205 205
206 206 if (SM_DEBUG_DECODE(entry)) {
207 207 mdb_printf("DEBUG: %3u %10s: txg=%llu pass=%llu\n",
208 208 number,
209 209 ddata[SM_DEBUG_ACTION_DECODE(entry)],
210 210 SM_DEBUG_TXG_DECODE(entry),
211 211 SM_DEBUG_SYNCPASS_DECODE(entry));
212 212 } else {
213 213 mdb_printf("Entry: %3u offsets=%08llx-%08llx type=%c "
214 214 "size=%06llx", number,
215 215 SM_OFFSET_DECODE(entry) << mapshift,
216 216 (SM_OFFSET_DECODE(entry) + SM_RUN_DECODE(entry)) <<
217 217 mapshift,
218 218 SM_TYPE_DECODE(entry) == SM_ALLOC ? 'A' : 'F',
219 219 SM_RUN_DECODE(entry) << mapshift);
220 220 if (verbose)
221 221 mdb_printf(" (raw=%012llx)\n", entry);
222 222 mdb_printf("\n");
223 223 }
224 224 return (WALK_NEXT);
225 225 }
226 226
227 227 static int
228 228 mdb_dsl_dir_name(uintptr_t addr, char *buf)
229 229 {
230 230 static int gotid;
231 231 static mdb_ctf_id_t dd_id;
232 232 uintptr_t dd_parent;
233 233 char dd_myname[MAXNAMELEN];
234 234
235 235 if (!gotid) {
236 236 if (mdb_ctf_lookup_by_name(ZFS_STRUCT "dsl_dir",
237 237 &dd_id) == -1) {
238 238 mdb_warn("couldn't find struct dsl_dir");
239 239 return (DCMD_ERR);
240 240 }
241 241 gotid = TRUE;
242 242 }
243 243 if (GETMEMBID(addr, &dd_id, dd_parent, dd_parent) ||
244 244 GETMEMBID(addr, &dd_id, dd_myname, dd_myname)) {
245 245 return (DCMD_ERR);
246 246 }
247 247
248 248 if (dd_parent) {
249 249 if (mdb_dsl_dir_name(dd_parent, buf))
250 250 return (DCMD_ERR);
251 251 strcat(buf, "/");
252 252 }
253 253
254 254 if (dd_myname[0])
255 255 strcat(buf, dd_myname);
256 256 else
257 257 strcat(buf, "???");
258 258
259 259 return (0);
260 260 }
261 261
262 262 static int
263 263 objset_name(uintptr_t addr, char *buf)
264 264 {
265 265 static int gotid;
266 266 static mdb_ctf_id_t os_id, ds_id;
267 267 uintptr_t os_dsl_dataset;
268 268 char ds_snapname[MAXNAMELEN];
269 269 uintptr_t ds_dir;
270 270
271 271 buf[0] = '\0';
272 272
273 273 if (!gotid) {
274 274 if (mdb_ctf_lookup_by_name(ZFS_STRUCT "objset",
275 275 &os_id) == -1) {
276 276 mdb_warn("couldn't find struct objset");
277 277 return (DCMD_ERR);
278 278 }
279 279 if (mdb_ctf_lookup_by_name(ZFS_STRUCT "dsl_dataset",
280 280 &ds_id) == -1) {
281 281 mdb_warn("couldn't find struct dsl_dataset");
282 282 return (DCMD_ERR);
283 283 }
284 284
285 285 gotid = TRUE;
286 286 }
287 287
288 288 if (GETMEMBID(addr, &os_id, os_dsl_dataset, os_dsl_dataset))
289 289 return (DCMD_ERR);
290 290
291 291 if (os_dsl_dataset == 0) {
292 292 strcat(buf, "mos");
293 293 return (0);
294 294 }
295 295
296 296 if (GETMEMBID(os_dsl_dataset, &ds_id, ds_snapname, ds_snapname) ||
297 297 GETMEMBID(os_dsl_dataset, &ds_id, ds_dir, ds_dir)) {
298 298 return (DCMD_ERR);
299 299 }
300 300
301 301 if (ds_dir && mdb_dsl_dir_name(ds_dir, buf))
302 302 return (DCMD_ERR);
303 303
304 304 if (ds_snapname[0]) {
305 305 strcat(buf, "@");
306 306 strcat(buf, ds_snapname);
307 307 }
308 308 return (0);
309 309 }
310 310
311 311 static void
312 312 enum_lookup(char *out, size_t size, mdb_ctf_id_t id, int val,
313 313 const char *prefix)
314 314 {
315 315 const char *cp;
316 316 size_t len = strlen(prefix);
317 317
318 318 if ((cp = mdb_ctf_enum_name(id, val)) != NULL) {
319 319 if (strncmp(cp, prefix, len) == 0)
320 320 cp += len;
321 321 (void) strncpy(out, cp, size);
322 322 } else {
323 323 mdb_snprintf(out, size, "? (%d)", val);
324 324 }
325 325 }
326 326
327 327 /* ARGSUSED */
328 328 static int
329 329 zfs_params(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
330 330 {
331 331 /*
332 332 * This table can be approximately generated by running:
333 333 * egrep "^[a-z0-9_]+ [a-z0-9_]+( =.*)?;" *.c | cut -d ' ' -f 2
334 334 */
335 335 static const char *params[] = {
336 336 "arc_reduce_dnlc_percent",
337 337 "arc_lotsfree_percent",
338 338 "zfs_dirty_data_max",
339 339 "zfs_dirty_data_sync",
340 340 "zfs_delay_max_ns",
341 341 "zfs_delay_min_dirty_percent",
342 342 "zfs_delay_scale",
343 343 "zfs_vdev_max_active",
344 344 "zfs_vdev_sync_read_min_active",
345 345 "zfs_vdev_sync_read_max_active",
346 346 "zfs_vdev_sync_write_min_active",
347 347 "zfs_vdev_sync_write_max_active",
348 348 "zfs_vdev_async_read_min_active",
349 349 "zfs_vdev_async_read_max_active",
350 350 "zfs_vdev_async_write_min_active",
351 351 "zfs_vdev_async_write_max_active",
352 352 "zfs_vdev_scrub_min_active",
353 353 "zfs_vdev_scrub_max_active",
354 354 "zfs_vdev_async_write_active_min_dirty_percent",
355 355 "zfs_vdev_async_write_active_max_dirty_percent",
356 356 "spa_asize_inflation",
357 357 "zfs_arc_max",
358 358 "zfs_arc_min",
359 359 "arc_shrink_shift",
360 360 "zfs_mdcomp_disable",
361 361 "zfs_prefetch_disable",
362 362 "zfetch_max_streams",
363 363 "zfetch_min_sec_reap",
364 364 "zfetch_block_cap",
365 365 "zfetch_array_rd_sz",
366 366 "zfs_default_bs",
367 367 "zfs_default_ibs",
368 368 "metaslab_aliquot",
369 369 "reference_tracking_enable",
370 370 "reference_history",
371 371 "spa_max_replication_override",
372 372 "spa_mode_global",
373 373 "zfs_flags",
374 374 "zfs_txg_timeout",
375 375 "zfs_vdev_cache_max",
376 376 "zfs_vdev_cache_size",
377 377 "zfs_vdev_cache_bshift",
378 378 "vdev_mirror_shift",
379 379 "zfs_scrub_limit",
380 380 "zfs_no_scrub_io",
381 381 "zfs_no_scrub_prefetch",
382 382 "zfs_vdev_aggregation_limit",
383 383 "fzap_default_block_shift",
384 384 "zfs_immediate_write_sz",
385 385 "zfs_read_chunk_size",
386 386 "zfs_nocacheflush",
387 387 "zil_replay_disable",
388 388 "metaslab_gang_bang",
389 389 "metaslab_df_alloc_threshold",
390 390 "metaslab_df_free_pct",
391 391 "zio_injection_enabled",
392 392 "zvol_immediate_write_sz",
393 393 "zio_max_timeout_ms",
394 394 "zio_min_timeout_ms",
395 395 "zio_timeout_shift",
396 396 };
397 397
398 398 for (int i = 0; i < sizeof (params) / sizeof (params[0]); i++) {
399 399 int sz;
400 400 uint64_t val64;
401 401 uint32_t *val32p = (uint32_t *)&val64;
402 402
403 403 sz = mdb_readvar(&val64, params[i]);
404 404 if (sz == 4) {
405 405 mdb_printf("%s = 0x%x\n", params[i], *val32p);
406 406 } else if (sz == 8) {
407 407 mdb_printf("%s = 0x%llx\n", params[i], val64);
408 408 } else {
409 409 mdb_warn("variable %s not found", params[i]);
410 410 }
411 411 }
412 412
413 413 return (DCMD_OK);
414 414 }
415 415
416 416 /* ARGSUSED */
417 417 static int
418 418 blkptr(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
419 419 {
420 420 mdb_ctf_id_t type_enum, checksum_enum, compress_enum;
421 421 char type[80], checksum[80], compress[80];
422 422 blkptr_t blk, *bp = &blk;
423 423 char buf[BP_SPRINTF_LEN];
424 424
425 425 if (mdb_vread(&blk, sizeof (blkptr_t), addr) == -1) {
426 426 mdb_warn("failed to read blkptr_t");
427 427 return (DCMD_ERR);
428 428 }
429 429
430 430 if (mdb_ctf_lookup_by_name("enum dmu_object_type", &type_enum) == -1 ||
431 431 mdb_ctf_lookup_by_name("enum zio_checksum", &checksum_enum) == -1 ||
432 432 mdb_ctf_lookup_by_name("enum zio_compress", &compress_enum) == -1) {
433 433 mdb_warn("Could not find blkptr enumerated types");
434 434 return (DCMD_ERR);
435 435 }
436 436
437 437 enum_lookup(type, sizeof (type), type_enum,
438 438 BP_GET_TYPE(bp), "DMU_OT_");
439 439 enum_lookup(checksum, sizeof (checksum), checksum_enum,
440 440 BP_GET_CHECKSUM(bp), "ZIO_CHECKSUM_");
441 441 enum_lookup(compress, sizeof (compress), compress_enum,
442 442 BP_GET_COMPRESS(bp), "ZIO_COMPRESS_");
443 443
444 444 SNPRINTF_BLKPTR(mdb_snprintf, '\n', buf, sizeof (buf), bp, type,
445 445 checksum, compress);
446 446
447 447 mdb_printf("%s\n", buf);
448 448
449 449 return (DCMD_OK);
450 450 }
451 451
452 452 typedef struct mdb_dmu_buf_impl {
453 453 struct {
454 454 uint64_t db_object;
455 455 } db;
456 456 uintptr_t db_objset;
457 457 uint64_t db_level;
458 458 uint64_t db_blkid;
459 459 struct {
460 460 uint64_t rc_count;
461 461 } db_holds;
462 462 } mdb_dmu_buf_impl_t;
463 463
464 464 /* ARGSUSED */
465 465 static int
466 466 dbuf(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
467 467 {
468 468 mdb_dmu_buf_impl_t db;
469 469 char objectname[32];
470 470 char blkidname[32];
471 471 char path[MAXNAMELEN];
472 472
473 473 if (DCMD_HDRSPEC(flags))
474 474 mdb_printf(" addr object lvl blkid holds os\n");
475 475
476 476 if (mdb_ctf_vread(&db, ZFS_STRUCT "dmu_buf_impl", "mdb_dmu_buf_impl_t",
477 477 addr, 0) == -1)
478 478 return (DCMD_ERR);
479 479
480 480 if (db.db.db_object == DMU_META_DNODE_OBJECT)
481 481 (void) strcpy(objectname, "mdn");
482 482 else
483 483 (void) mdb_snprintf(objectname, sizeof (objectname), "%llx",
484 484 (u_longlong_t)db.db.db_object);
485 485
486 486 if (db.db_blkid == DMU_BONUS_BLKID)
487 487 (void) strcpy(blkidname, "bonus");
488 488 else
489 489 (void) mdb_snprintf(blkidname, sizeof (blkidname), "%llx",
490 490 (u_longlong_t)db.db_blkid);
491 491
492 492 if (objset_name(db.db_objset, path)) {
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492 lines elided |
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493 493 return (DCMD_ERR);
494 494 }
495 495
496 496 mdb_printf("%p %8s %1u %9s %2llu %s\n", addr,
497 497 objectname, (int)db.db_level, blkidname,
498 498 db.db_holds.rc_count, path);
499 499
500 500 return (DCMD_OK);
501 501 }
502 502
503 -/* ARGSUSED */
504 -static int
505 -dbuf_stats(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
506 -{
507 -#define HISTOSZ 32
508 - uintptr_t dbp;
509 - dmu_buf_impl_t db;
510 - dbuf_hash_table_t ht;
511 - uint64_t bucket, ndbufs;
512 - uint64_t histo[HISTOSZ];
513 - uint64_t histo2[HISTOSZ];
514 - int i, maxidx;
515 -
516 - if (mdb_readvar(&ht, "dbuf_hash_table") == -1) {
517 - mdb_warn("failed to read 'dbuf_hash_table'");
518 - return (DCMD_ERR);
519 - }
520 -
521 - for (i = 0; i < HISTOSZ; i++) {
522 - histo[i] = 0;
523 - histo2[i] = 0;
524 - }
525 -
526 - ndbufs = 0;
527 - for (bucket = 0; bucket < ht.hash_table_mask+1; bucket++) {
528 - int len;
529 -
530 - if (mdb_vread(&dbp, sizeof (void *),
531 - (uintptr_t)(ht.hash_table+bucket)) == -1) {
532 - mdb_warn("failed to read hash bucket %u at %p",
533 - bucket, ht.hash_table+bucket);
534 - return (DCMD_ERR);
535 - }
536 -
537 - len = 0;
538 - while (dbp != 0) {
539 - if (mdb_vread(&db, sizeof (dmu_buf_impl_t),
540 - dbp) == -1) {
541 - mdb_warn("failed to read dbuf at %p", dbp);
542 - return (DCMD_ERR);
543 - }
544 - dbp = (uintptr_t)db.db_hash_next;
545 - for (i = MIN(len, HISTOSZ - 1); i >= 0; i--)
546 - histo2[i]++;
547 - len++;
548 - ndbufs++;
549 - }
550 -
551 - if (len >= HISTOSZ)
552 - len = HISTOSZ-1;
553 - histo[len]++;
554 - }
555 -
556 - mdb_printf("hash table has %llu buckets, %llu dbufs "
557 - "(avg %llu buckets/dbuf)\n",
558 - ht.hash_table_mask+1, ndbufs,
559 - (ht.hash_table_mask+1)/ndbufs);
560 -
561 - mdb_printf("\n");
562 - maxidx = 0;
563 - for (i = 0; i < HISTOSZ; i++)
564 - if (histo[i] > 0)
565 - maxidx = i;
566 - mdb_printf("hash chain length number of buckets\n");
567 - for (i = 0; i <= maxidx; i++)
568 - mdb_printf("%u %llu\n", i, histo[i]);
569 -
570 - mdb_printf("\n");
571 - maxidx = 0;
572 - for (i = 0; i < HISTOSZ; i++)
573 - if (histo2[i] > 0)
574 - maxidx = i;
575 - mdb_printf("hash chain depth number of dbufs\n");
576 - for (i = 0; i <= maxidx; i++)
577 - mdb_printf("%u or more %llu %llu%%\n",
578 - i, histo2[i], histo2[i]*100/ndbufs);
579 -
580 -
581 - return (DCMD_OK);
582 -}
583 -
584 503 #define CHAIN_END 0xffff
585 504 /*
586 505 * ::zap_leaf [-v]
587 506 *
588 507 * Print a zap_leaf_phys_t, assumed to be 16k
589 508 */
590 509 /* ARGSUSED */
591 510 static int
592 511 zap_leaf(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
593 512 {
594 513 char buf[16*1024];
595 514 int verbose = B_FALSE;
596 515 int four = B_FALSE;
597 516 zap_leaf_t l;
598 517 zap_leaf_phys_t *zlp = (void *)buf;
599 518 int i;
600 519
601 520 if (mdb_getopts(argc, argv,
602 521 'v', MDB_OPT_SETBITS, TRUE, &verbose,
603 522 '4', MDB_OPT_SETBITS, TRUE, &four,
604 523 NULL) != argc)
605 524 return (DCMD_USAGE);
606 525
607 526 l.l_phys = zlp;
608 527 l.l_bs = 14; /* assume 16k blocks */
609 528 if (four)
610 529 l.l_bs = 12;
611 530
612 531 if (!(flags & DCMD_ADDRSPEC)) {
613 532 return (DCMD_USAGE);
614 533 }
615 534
616 535 if (mdb_vread(buf, sizeof (buf), addr) == -1) {
617 536 mdb_warn("failed to read zap_leaf_phys_t at %p", addr);
618 537 return (DCMD_ERR);
619 538 }
620 539
621 540 if (zlp->l_hdr.lh_block_type != ZBT_LEAF ||
622 541 zlp->l_hdr.lh_magic != ZAP_LEAF_MAGIC) {
623 542 mdb_warn("This does not appear to be a zap_leaf_phys_t");
624 543 return (DCMD_ERR);
625 544 }
626 545
627 546 mdb_printf("zap_leaf_phys_t at %p:\n", addr);
628 547 mdb_printf(" lh_prefix_len = %u\n", zlp->l_hdr.lh_prefix_len);
629 548 mdb_printf(" lh_prefix = %llx\n", zlp->l_hdr.lh_prefix);
630 549 mdb_printf(" lh_nentries = %u\n", zlp->l_hdr.lh_nentries);
631 550 mdb_printf(" lh_nfree = %u\n", zlp->l_hdr.lh_nfree,
632 551 zlp->l_hdr.lh_nfree * 100 / (ZAP_LEAF_NUMCHUNKS(&l)));
633 552 mdb_printf(" lh_freelist = %u\n", zlp->l_hdr.lh_freelist);
634 553 mdb_printf(" lh_flags = %x (%s)\n", zlp->l_hdr.lh_flags,
635 554 zlp->l_hdr.lh_flags & ZLF_ENTRIES_CDSORTED ?
636 555 "ENTRIES_CDSORTED" : "");
637 556
638 557 if (verbose) {
639 558 mdb_printf(" hash table:\n");
640 559 for (i = 0; i < ZAP_LEAF_HASH_NUMENTRIES(&l); i++) {
641 560 if (zlp->l_hash[i] != CHAIN_END)
642 561 mdb_printf(" %u: %u\n", i, zlp->l_hash[i]);
643 562 }
644 563 }
645 564
646 565 mdb_printf(" chunks:\n");
647 566 for (i = 0; i < ZAP_LEAF_NUMCHUNKS(&l); i++) {
648 567 /* LINTED: alignment */
649 568 zap_leaf_chunk_t *zlc = &ZAP_LEAF_CHUNK(&l, i);
650 569 switch (zlc->l_entry.le_type) {
651 570 case ZAP_CHUNK_FREE:
652 571 if (verbose) {
653 572 mdb_printf(" %u: free; lf_next = %u\n",
654 573 i, zlc->l_free.lf_next);
655 574 }
656 575 break;
657 576 case ZAP_CHUNK_ENTRY:
658 577 mdb_printf(" %u: entry\n", i);
659 578 if (verbose) {
660 579 mdb_printf(" le_next = %u\n",
661 580 zlc->l_entry.le_next);
662 581 }
663 582 mdb_printf(" le_name_chunk = %u\n",
664 583 zlc->l_entry.le_name_chunk);
665 584 mdb_printf(" le_name_numints = %u\n",
666 585 zlc->l_entry.le_name_numints);
667 586 mdb_printf(" le_value_chunk = %u\n",
668 587 zlc->l_entry.le_value_chunk);
669 588 mdb_printf(" le_value_intlen = %u\n",
670 589 zlc->l_entry.le_value_intlen);
671 590 mdb_printf(" le_value_numints = %u\n",
672 591 zlc->l_entry.le_value_numints);
673 592 mdb_printf(" le_cd = %u\n",
674 593 zlc->l_entry.le_cd);
675 594 mdb_printf(" le_hash = %llx\n",
676 595 zlc->l_entry.le_hash);
677 596 break;
678 597 case ZAP_CHUNK_ARRAY:
679 598 mdb_printf(" %u: array", i);
680 599 if (strisprint((char *)zlc->l_array.la_array))
681 600 mdb_printf(" \"%s\"", zlc->l_array.la_array);
682 601 mdb_printf("\n");
683 602 if (verbose) {
684 603 int j;
685 604 mdb_printf(" ");
686 605 for (j = 0; j < ZAP_LEAF_ARRAY_BYTES; j++) {
687 606 mdb_printf("%02x ",
688 607 zlc->l_array.la_array[j]);
689 608 }
690 609 mdb_printf("\n");
691 610 }
692 611 if (zlc->l_array.la_next != CHAIN_END) {
693 612 mdb_printf(" lf_next = %u\n",
694 613 zlc->l_array.la_next);
695 614 }
696 615 break;
697 616 default:
698 617 mdb_printf(" %u: undefined type %u\n",
699 618 zlc->l_entry.le_type);
700 619 }
701 620 }
702 621
703 622 return (DCMD_OK);
704 623 }
705 624
706 625 typedef struct dbufs_data {
707 626 mdb_ctf_id_t id;
708 627 uint64_t objset;
709 628 uint64_t object;
710 629 uint64_t level;
711 630 uint64_t blkid;
712 631 char *osname;
713 632 } dbufs_data_t;
714 633
715 634 #define DBUFS_UNSET (0xbaddcafedeadbeefULL)
716 635
717 636 /* ARGSUSED */
718 637 static int
719 638 dbufs_cb(uintptr_t addr, const void *unknown, void *arg)
720 639 {
721 640 dbufs_data_t *data = arg;
722 641 uintptr_t objset;
723 642 dmu_buf_t db;
724 643 uint8_t level;
725 644 uint64_t blkid;
726 645 char osname[MAXNAMELEN];
727 646
728 647 if (GETMEMBID(addr, &data->id, db_objset, objset) ||
729 648 GETMEMBID(addr, &data->id, db, db) ||
730 649 GETMEMBID(addr, &data->id, db_level, level) ||
731 650 GETMEMBID(addr, &data->id, db_blkid, blkid)) {
732 651 return (WALK_ERR);
733 652 }
734 653
735 654 if ((data->objset == DBUFS_UNSET || data->objset == objset) &&
736 655 (data->osname == NULL || (objset_name(objset, osname) == 0 &&
737 656 strcmp(data->osname, osname) == 0)) &&
738 657 (data->object == DBUFS_UNSET || data->object == db.db_object) &&
739 658 (data->level == DBUFS_UNSET || data->level == level) &&
740 659 (data->blkid == DBUFS_UNSET || data->blkid == blkid)) {
741 660 mdb_printf("%#lr\n", addr);
742 661 }
743 662 return (WALK_NEXT);
744 663 }
745 664
746 665 /* ARGSUSED */
747 666 static int
748 667 dbufs(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
749 668 {
750 669 dbufs_data_t data;
751 670 char *object = NULL;
752 671 char *blkid = NULL;
753 672
754 673 data.objset = data.object = data.level = data.blkid = DBUFS_UNSET;
755 674 data.osname = NULL;
756 675
757 676 if (mdb_getopts(argc, argv,
758 677 'O', MDB_OPT_UINT64, &data.objset,
759 678 'n', MDB_OPT_STR, &data.osname,
760 679 'o', MDB_OPT_STR, &object,
761 680 'l', MDB_OPT_UINT64, &data.level,
762 681 'b', MDB_OPT_STR, &blkid) != argc) {
763 682 return (DCMD_USAGE);
764 683 }
765 684
766 685 if (object) {
767 686 if (strcmp(object, "mdn") == 0) {
768 687 data.object = DMU_META_DNODE_OBJECT;
769 688 } else {
770 689 data.object = mdb_strtoull(object);
771 690 }
772 691 }
773 692
774 693 if (blkid) {
775 694 if (strcmp(blkid, "bonus") == 0) {
776 695 data.blkid = DMU_BONUS_BLKID;
777 696 } else {
778 697 data.blkid = mdb_strtoull(blkid);
779 698 }
780 699 }
781 700
782 701 if (mdb_ctf_lookup_by_name(ZFS_STRUCT "dmu_buf_impl", &data.id) == -1) {
783 702 mdb_warn("couldn't find struct dmu_buf_impl_t");
784 703 return (DCMD_ERR);
785 704 }
786 705
787 706 if (mdb_walk("dmu_buf_impl_t", dbufs_cb, &data) != 0) {
788 707 mdb_warn("can't walk dbufs");
789 708 return (DCMD_ERR);
790 709 }
791 710
792 711 return (DCMD_OK);
793 712 }
794 713
795 714 typedef struct abuf_find_data {
796 715 dva_t dva;
797 716 mdb_ctf_id_t id;
798 717 } abuf_find_data_t;
799 718
800 719 /* ARGSUSED */
801 720 static int
802 721 abuf_find_cb(uintptr_t addr, const void *unknown, void *arg)
803 722 {
804 723 abuf_find_data_t *data = arg;
805 724 dva_t dva;
806 725
807 726 if (GETMEMBID(addr, &data->id, b_dva, dva)) {
808 727 return (WALK_ERR);
809 728 }
810 729
811 730 if (dva.dva_word[0] == data->dva.dva_word[0] &&
812 731 dva.dva_word[1] == data->dva.dva_word[1]) {
813 732 mdb_printf("%#lr\n", addr);
814 733 }
815 734 return (WALK_NEXT);
816 735 }
817 736
818 737 /* ARGSUSED */
819 738 static int
820 739 abuf_find(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
821 740 {
822 741 abuf_find_data_t data;
823 742 GElf_Sym sym;
824 743 int i;
825 744 const char *syms[] = {
826 745 "ARC_mru",
827 746 "ARC_mru_ghost",
828 747 "ARC_mfu",
829 748 "ARC_mfu_ghost",
830 749 };
831 750
832 751 if (argc != 2)
833 752 return (DCMD_USAGE);
834 753
835 754 for (i = 0; i < 2; i ++) {
836 755 switch (argv[i].a_type) {
837 756 case MDB_TYPE_STRING:
838 757 data.dva.dva_word[i] = mdb_strtoull(argv[i].a_un.a_str);
839 758 break;
840 759 case MDB_TYPE_IMMEDIATE:
841 760 data.dva.dva_word[i] = argv[i].a_un.a_val;
842 761 break;
843 762 default:
844 763 return (DCMD_USAGE);
845 764 }
846 765 }
847 766
848 767 if (mdb_ctf_lookup_by_name(ZFS_STRUCT "arc_buf_hdr", &data.id) == -1) {
849 768 mdb_warn("couldn't find struct arc_buf_hdr");
850 769 return (DCMD_ERR);
851 770 }
852 771
853 772 for (i = 0; i < sizeof (syms) / sizeof (syms[0]); i++) {
854 773 if (mdb_lookup_by_obj(ZFS_OBJ_NAME, syms[i], &sym)) {
855 774 mdb_warn("can't find symbol %s", syms[i]);
856 775 return (DCMD_ERR);
857 776 }
858 777
859 778 if (mdb_pwalk("list", abuf_find_cb, &data, sym.st_value) != 0) {
860 779 mdb_warn("can't walk %s", syms[i]);
861 780 return (DCMD_ERR);
862 781 }
863 782 }
864 783
865 784 return (DCMD_OK);
866 785 }
867 786
868 787
869 788 typedef struct dbgmsg_arg {
870 789 boolean_t da_verbose;
871 790 boolean_t da_address;
872 791 } dbgmsg_arg_t;
873 792
874 793 /* ARGSUSED */
875 794 static int
876 795 dbgmsg_cb(uintptr_t addr, const void *unknown, void *arg)
877 796 {
878 797 static mdb_ctf_id_t id;
879 798 static boolean_t gotid;
880 799 static ulong_t off;
881 800
882 801 dbgmsg_arg_t *da = arg;
883 802 time_t timestamp;
884 803 char buf[1024];
885 804
886 805 if (!gotid) {
887 806 if (mdb_ctf_lookup_by_name(ZFS_STRUCT "zfs_dbgmsg", &id) ==
888 807 -1) {
889 808 mdb_warn("couldn't find struct zfs_dbgmsg");
890 809 return (WALK_ERR);
891 810 }
892 811 gotid = TRUE;
893 812 if (mdb_ctf_offsetof(id, "zdm_msg", &off) == -1) {
894 813 mdb_warn("couldn't find zdm_msg");
895 814 return (WALK_ERR);
896 815 }
897 816 off /= 8;
898 817 }
899 818
900 819
901 820 if (GETMEMBID(addr, &id, zdm_timestamp, timestamp)) {
902 821 return (WALK_ERR);
903 822 }
904 823
905 824 if (mdb_readstr(buf, sizeof (buf), addr + off) == -1) {
906 825 mdb_warn("failed to read zdm_msg at %p\n", addr + off);
907 826 return (DCMD_ERR);
908 827 }
909 828
910 829 if (da->da_address)
911 830 mdb_printf("%p ", addr);
912 831 if (da->da_verbose)
913 832 mdb_printf("%Y ", timestamp);
914 833
915 834 mdb_printf("%s\n", buf);
916 835
917 836 if (da->da_verbose)
918 837 (void) mdb_call_dcmd("whatis", addr, DCMD_ADDRSPEC, 0, NULL);
919 838
920 839 return (WALK_NEXT);
921 840 }
922 841
923 842 /* ARGSUSED */
924 843 static int
925 844 dbgmsg(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
926 845 {
927 846 GElf_Sym sym;
928 847 dbgmsg_arg_t da = { 0 };
929 848
930 849 if (mdb_getopts(argc, argv,
931 850 'v', MDB_OPT_SETBITS, B_TRUE, &da.da_verbose,
932 851 'a', MDB_OPT_SETBITS, B_TRUE, &da.da_address,
933 852 NULL) != argc)
934 853 return (DCMD_USAGE);
935 854
936 855 if (mdb_lookup_by_obj(ZFS_OBJ_NAME, "zfs_dbgmsgs", &sym)) {
937 856 mdb_warn("can't find zfs_dbgmsgs");
938 857 return (DCMD_ERR);
939 858 }
940 859
941 860 if (mdb_pwalk("list", dbgmsg_cb, &da, sym.st_value) != 0) {
942 861 mdb_warn("can't walk zfs_dbgmsgs");
943 862 return (DCMD_ERR);
944 863 }
945 864
946 865 return (DCMD_OK);
947 866 }
948 867
949 868 /*ARGSUSED*/
950 869 static int
951 870 arc_print(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
952 871 {
953 872 kstat_named_t *stats;
954 873 GElf_Sym sym;
955 874 int nstats, i;
956 875 uint_t opt_a = FALSE;
957 876 uint_t opt_b = FALSE;
958 877 uint_t shift = 0;
959 878 const char *suffix;
960 879
961 880 static const char *bytestats[] = {
962 881 "p", "c", "c_min", "c_max", "size", "duplicate_buffers_size",
963 882 "arc_meta_used", "arc_meta_limit", "arc_meta_max",
964 883 NULL
965 884 };
966 885
967 886 static const char *extras[] = {
968 887 "arc_no_grow", "arc_tempreserve",
969 888 NULL
970 889 };
971 890
972 891 if (mdb_lookup_by_obj(ZFS_OBJ_NAME, "arc_stats", &sym) == -1) {
973 892 mdb_warn("failed to find 'arc_stats'");
974 893 return (DCMD_ERR);
975 894 }
976 895
977 896 stats = mdb_zalloc(sym.st_size, UM_SLEEP | UM_GC);
978 897
979 898 if (mdb_vread(stats, sym.st_size, sym.st_value) == -1) {
980 899 mdb_warn("couldn't read 'arc_stats' at %p", sym.st_value);
981 900 return (DCMD_ERR);
982 901 }
983 902
984 903 nstats = sym.st_size / sizeof (kstat_named_t);
985 904
986 905 /* NB: -a / opt_a are ignored for backwards compatability */
987 906 if (mdb_getopts(argc, argv,
988 907 'a', MDB_OPT_SETBITS, TRUE, &opt_a,
989 908 'b', MDB_OPT_SETBITS, TRUE, &opt_b,
990 909 'k', MDB_OPT_SETBITS, 10, &shift,
991 910 'm', MDB_OPT_SETBITS, 20, &shift,
992 911 'g', MDB_OPT_SETBITS, 30, &shift,
993 912 NULL) != argc)
994 913 return (DCMD_USAGE);
995 914
996 915 if (!opt_b && !shift)
997 916 shift = 20;
998 917
999 918 switch (shift) {
1000 919 case 0:
1001 920 suffix = "B";
1002 921 break;
1003 922 case 10:
1004 923 suffix = "KB";
1005 924 break;
1006 925 case 20:
1007 926 suffix = "MB";
1008 927 break;
1009 928 case 30:
1010 929 suffix = "GB";
1011 930 break;
1012 931 default:
1013 932 suffix = "XX";
1014 933 }
1015 934
1016 935 for (i = 0; i < nstats; i++) {
1017 936 int j;
1018 937 boolean_t bytes = B_FALSE;
1019 938
1020 939 for (j = 0; bytestats[j]; j++) {
1021 940 if (strcmp(stats[i].name, bytestats[j]) == 0) {
1022 941 bytes = B_TRUE;
1023 942 break;
1024 943 }
1025 944 }
1026 945
1027 946 if (bytes) {
1028 947 mdb_printf("%-25s = %9llu %s\n", stats[i].name,
1029 948 stats[i].value.ui64 >> shift, suffix);
1030 949 } else {
1031 950 mdb_printf("%-25s = %9llu\n", stats[i].name,
1032 951 stats[i].value.ui64);
1033 952 }
1034 953 }
1035 954
1036 955 for (i = 0; extras[i]; i++) {
1037 956 uint64_t buf;
1038 957
1039 958 if (mdb_lookup_by_obj(ZFS_OBJ_NAME, extras[i], &sym) == -1) {
1040 959 mdb_warn("failed to find '%s'", extras[i]);
1041 960 return (DCMD_ERR);
1042 961 }
1043 962
1044 963 if (sym.st_size != sizeof (uint64_t) &&
1045 964 sym.st_size != sizeof (uint32_t)) {
1046 965 mdb_warn("expected scalar for variable '%s'\n",
1047 966 extras[i]);
1048 967 return (DCMD_ERR);
1049 968 }
1050 969
1051 970 if (mdb_vread(&buf, sym.st_size, sym.st_value) == -1) {
1052 971 mdb_warn("couldn't read '%s'", extras[i]);
1053 972 return (DCMD_ERR);
1054 973 }
1055 974
1056 975 mdb_printf("%-25s = ", extras[i]);
1057 976
1058 977 /* NB: all the 64-bit extras happen to be byte counts */
1059 978 if (sym.st_size == sizeof (uint64_t))
1060 979 mdb_printf("%9llu %s\n", buf >> shift, suffix);
1061 980
1062 981 if (sym.st_size == sizeof (uint32_t))
1063 982 mdb_printf("%9d\n", *((uint32_t *)&buf));
1064 983 }
1065 984 return (DCMD_OK);
1066 985 }
1067 986
1068 987 typedef struct mdb_spa_print {
1069 988 pool_state_t spa_state;
1070 989 char spa_name[MAXNAMELEN];
1071 990 } mdb_spa_print_t;
1072 991
1073 992 /*
1074 993 * ::spa
1075 994 *
1076 995 * -c Print configuration information as well
1077 996 * -v Print vdev state
1078 997 * -e Print vdev error stats
1079 998 * -m Print vdev metaslab info
1080 999 * -M print vdev metaslab group info
1081 1000 * -h Print histogram info (must be combined with -m or -M)
1082 1001 *
1083 1002 * Print a summarized spa_t. When given no arguments, prints out a table of all
1084 1003 * active pools on the system.
1085 1004 */
1086 1005 /* ARGSUSED */
1087 1006 static int
1088 1007 spa_print(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
1089 1008 {
1090 1009 const char *statetab[] = { "ACTIVE", "EXPORTED", "DESTROYED",
1091 1010 "SPARE", "L2CACHE", "UNINIT", "UNAVAIL", "POTENTIAL" };
1092 1011 const char *state;
1093 1012 int spa_flags = 0;
1094 1013
1095 1014 if (mdb_getopts(argc, argv,
1096 1015 'c', MDB_OPT_SETBITS, SPA_FLAG_CONFIG, &spa_flags,
1097 1016 'v', MDB_OPT_SETBITS, SPA_FLAG_VDEVS, &spa_flags,
1098 1017 'e', MDB_OPT_SETBITS, SPA_FLAG_ERRORS, &spa_flags,
1099 1018 'M', MDB_OPT_SETBITS, SPA_FLAG_METASLAB_GROUPS, &spa_flags,
1100 1019 'm', MDB_OPT_SETBITS, SPA_FLAG_METASLABS, &spa_flags,
1101 1020 'h', MDB_OPT_SETBITS, SPA_FLAG_HISTOGRAMS, &spa_flags,
1102 1021 NULL) != argc)
1103 1022 return (DCMD_USAGE);
1104 1023
1105 1024 if (!(flags & DCMD_ADDRSPEC)) {
1106 1025 if (mdb_walk_dcmd("spa", "spa", argc, argv) == -1) {
1107 1026 mdb_warn("can't walk spa");
1108 1027 return (DCMD_ERR);
1109 1028 }
1110 1029
1111 1030 return (DCMD_OK);
1112 1031 }
1113 1032
1114 1033 if (flags & DCMD_PIPE_OUT) {
1115 1034 mdb_printf("%#lr\n", addr);
1116 1035 return (DCMD_OK);
1117 1036 }
1118 1037
1119 1038 if (DCMD_HDRSPEC(flags))
1120 1039 mdb_printf("%<u>%-?s %9s %-*s%</u>\n", "ADDR", "STATE",
1121 1040 sizeof (uintptr_t) == 4 ? 60 : 52, "NAME");
1122 1041
1123 1042 mdb_spa_print_t spa;
1124 1043 if (mdb_ctf_vread(&spa, "spa_t", "mdb_spa_print_t", addr, 0) == -1)
1125 1044 return (DCMD_ERR);
1126 1045
1127 1046 if (spa.spa_state < 0 || spa.spa_state > POOL_STATE_UNAVAIL)
1128 1047 state = "UNKNOWN";
1129 1048 else
1130 1049 state = statetab[spa.spa_state];
1131 1050
1132 1051 mdb_printf("%0?p %9s %s\n", addr, state, spa.spa_name);
1133 1052
1134 1053 if (spa_flags & SPA_FLAG_CONFIG) {
1135 1054 mdb_printf("\n");
1136 1055 mdb_inc_indent(4);
1137 1056 if (mdb_call_dcmd("spa_config", addr, flags, 0,
1138 1057 NULL) != DCMD_OK)
1139 1058 return (DCMD_ERR);
1140 1059 mdb_dec_indent(4);
1141 1060 }
1142 1061
1143 1062 if (spa_flags & SPA_FLAG_ALL_VDEV) {
1144 1063 mdb_arg_t v;
1145 1064 char opts[100] = "-";
1146 1065 int args =
1147 1066 (spa_flags | SPA_FLAG_VDEVS) == SPA_FLAG_VDEVS ? 0 : 1;
1148 1067
1149 1068 if (spa_flags & SPA_FLAG_ERRORS)
1150 1069 strcat(opts, "e");
1151 1070 if (spa_flags & SPA_FLAG_METASLABS)
1152 1071 strcat(opts, "m");
1153 1072 if (spa_flags & SPA_FLAG_METASLAB_GROUPS)
1154 1073 strcat(opts, "M");
1155 1074 if (spa_flags & SPA_FLAG_HISTOGRAMS)
1156 1075 strcat(opts, "h");
1157 1076
1158 1077 v.a_type = MDB_TYPE_STRING;
1159 1078 v.a_un.a_str = opts;
1160 1079
1161 1080 mdb_printf("\n");
1162 1081 mdb_inc_indent(4);
1163 1082 if (mdb_call_dcmd("spa_vdevs", addr, flags, args,
1164 1083 &v) != DCMD_OK)
1165 1084 return (DCMD_ERR);
1166 1085 mdb_dec_indent(4);
1167 1086 }
1168 1087
1169 1088 return (DCMD_OK);
1170 1089 }
1171 1090
1172 1091 typedef struct mdb_spa_config_spa {
1173 1092 uintptr_t spa_config;
1174 1093 } mdb_spa_config_spa_t;
1175 1094
1176 1095 /*
1177 1096 * ::spa_config
1178 1097 *
1179 1098 * Given a spa_t, print the configuration information stored in spa_config.
1180 1099 * Since it's just an nvlist, format it as an indented list of name=value pairs.
1181 1100 * We simply read the value of spa_config and pass off to ::nvlist.
1182 1101 */
1183 1102 /* ARGSUSED */
1184 1103 static int
1185 1104 spa_print_config(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
1186 1105 {
1187 1106 mdb_spa_config_spa_t spa;
1188 1107
1189 1108 if (argc != 0 || !(flags & DCMD_ADDRSPEC))
1190 1109 return (DCMD_USAGE);
1191 1110
1192 1111 if (mdb_ctf_vread(&spa, ZFS_STRUCT "spa", "mdb_spa_config_spa_t",
1193 1112 addr, 0) == -1)
1194 1113 return (DCMD_ERR);
1195 1114
1196 1115 if (spa.spa_config == 0) {
1197 1116 mdb_printf("(none)\n");
1198 1117 return (DCMD_OK);
1199 1118 }
1200 1119
1201 1120 return (mdb_call_dcmd("nvlist", spa.spa_config, flags,
1202 1121 0, NULL));
1203 1122 }
1204 1123
1205 1124 const char histo_stars[] = "****************************************";
1206 1125 const int histo_width = sizeof (histo_stars) - 1;
1207 1126
1208 1127 static void
1209 1128 dump_histogram(const uint64_t *histo, int size, int offset)
1210 1129 {
1211 1130 int i;
1212 1131 int minidx = size - 1;
1213 1132 int maxidx = 0;
1214 1133 uint64_t max = 0;
1215 1134
1216 1135 for (i = 0; i < size; i++) {
1217 1136 if (histo[i] > max)
1218 1137 max = histo[i];
1219 1138 if (histo[i] > 0 && i > maxidx)
1220 1139 maxidx = i;
1221 1140 if (histo[i] > 0 && i < minidx)
1222 1141 minidx = i;
1223 1142 }
1224 1143
1225 1144 if (max < histo_width)
1226 1145 max = histo_width;
1227 1146
1228 1147 for (i = minidx; i <= maxidx; i++) {
1229 1148 mdb_printf("%3u: %6llu %s\n",
1230 1149 i + offset, (u_longlong_t)histo[i],
1231 1150 &histo_stars[(max - histo[i]) * histo_width / max]);
1232 1151 }
1233 1152 }
1234 1153
1235 1154 typedef struct mdb_range_tree {
1236 1155 uint64_t rt_space;
1237 1156 } mdb_range_tree_t;
1238 1157
1239 1158 typedef struct mdb_metaslab_group {
1240 1159 uint64_t mg_fragmentation;
1241 1160 uint64_t mg_histogram[RANGE_TREE_HISTOGRAM_SIZE];
1242 1161 } mdb_metaslab_group_t;
1243 1162
1244 1163 typedef struct mdb_metaslab {
1245 1164 uint64_t ms_id;
1246 1165 uint64_t ms_start;
1247 1166 uint64_t ms_size;
1248 1167 uint64_t ms_fragmentation;
1249 1168 uintptr_t ms_alloctree[TXG_SIZE];
1250 1169 uintptr_t ms_freetree[TXG_SIZE];
1251 1170 uintptr_t ms_tree;
1252 1171 uintptr_t ms_sm;
1253 1172 } mdb_metaslab_t;
1254 1173
1255 1174 typedef struct mdb_space_map_phys_t {
1256 1175 uint64_t smp_alloc;
1257 1176 uint64_t smp_histogram[SPACE_MAP_HISTOGRAM_SIZE];
1258 1177 } mdb_space_map_phys_t;
1259 1178
1260 1179 typedef struct mdb_space_map {
1261 1180 uint64_t sm_size;
1262 1181 uint8_t sm_shift;
1263 1182 uint64_t sm_alloc;
1264 1183 uintptr_t sm_phys;
1265 1184 } mdb_space_map_t;
1266 1185
1267 1186 typedef struct mdb_vdev {
1268 1187 uintptr_t vdev_ms;
1269 1188 uint64_t vdev_ms_count;
1270 1189 vdev_stat_t vdev_stat;
1271 1190 } mdb_vdev_t;
1272 1191
1273 1192 static int
1274 1193 metaslab_stats(uintptr_t addr, int spa_flags)
1275 1194 {
1276 1195 mdb_vdev_t vdev;
1277 1196 uintptr_t *vdev_ms;
1278 1197
1279 1198 if (mdb_ctf_vread(&vdev, "vdev_t", "mdb_vdev_t",
1280 1199 (uintptr_t)addr, 0) == -1) {
1281 1200 mdb_warn("failed to read vdev at %p\n", addr);
1282 1201 return (DCMD_ERR);
1283 1202 }
1284 1203
1285 1204 mdb_inc_indent(4);
1286 1205 mdb_printf("%<u>%-?s %6s %20s %10s %9s%</u>\n", "ADDR", "ID",
1287 1206 "OFFSET", "FREE", "FRAGMENTATION");
1288 1207
1289 1208 vdev_ms = mdb_alloc(vdev.vdev_ms_count * sizeof (void *),
1290 1209 UM_SLEEP | UM_GC);
1291 1210 if (mdb_vread(vdev_ms, vdev.vdev_ms_count * sizeof (void *),
1292 1211 (uintptr_t)vdev.vdev_ms) == -1) {
1293 1212 mdb_warn("failed to read vdev_ms at %p\n", vdev.vdev_ms);
1294 1213 return (DCMD_ERR);
1295 1214 }
1296 1215
1297 1216 for (int m = 0; m < vdev.vdev_ms_count; m++) {
1298 1217 mdb_metaslab_t ms;
1299 1218 mdb_space_map_t sm = { 0 };
1300 1219 char free[NICENUM_BUFLEN];
1301 1220
1302 1221 if (mdb_ctf_vread(&ms, "metaslab_t", "mdb_metaslab_t",
1303 1222 (uintptr_t)vdev_ms[m], 0) == -1)
1304 1223 return (DCMD_ERR);
1305 1224
1306 1225 if (ms.ms_sm != NULL &&
1307 1226 mdb_ctf_vread(&sm, "space_map_t", "mdb_space_map_t",
1308 1227 ms.ms_sm, 0) == -1)
1309 1228 return (DCMD_ERR);
1310 1229
1311 1230 mdb_nicenum(ms.ms_size - sm.sm_alloc, free);
1312 1231
1313 1232 mdb_printf("%0?p %6llu %20llx %10s ", vdev_ms[m], ms.ms_id,
1314 1233 ms.ms_start, free);
1315 1234 if (ms.ms_fragmentation == ZFS_FRAG_INVALID)
1316 1235 mdb_printf("%9s\n", "-");
1317 1236 else
1318 1237 mdb_printf("%9llu%%\n", ms.ms_fragmentation);
1319 1238
1320 1239 if ((spa_flags & SPA_FLAG_HISTOGRAMS) && ms.ms_sm != NULL) {
1321 1240 mdb_space_map_phys_t smp;
1322 1241
1323 1242 if (sm.sm_phys == NULL)
1324 1243 continue;
1325 1244
1326 1245 (void) mdb_ctf_vread(&smp, "space_map_phys_t",
1327 1246 "mdb_space_map_phys_t", sm.sm_phys, 0);
1328 1247
1329 1248 dump_histogram(smp.smp_histogram,
1330 1249 SPACE_MAP_HISTOGRAM_SIZE, sm.sm_shift);
1331 1250 }
1332 1251 }
1333 1252 mdb_dec_indent(4);
1334 1253 return (DCMD_OK);
1335 1254 }
1336 1255
1337 1256 static int
1338 1257 metaslab_group_stats(uintptr_t addr, int spa_flags)
1339 1258 {
1340 1259 mdb_metaslab_group_t mg;
1341 1260 if (mdb_ctf_vread(&mg, "metaslab_group_t", "mdb_metaslab_group_t",
1342 1261 (uintptr_t)addr, 0) == -1) {
1343 1262 mdb_warn("failed to read vdev_mg at %p\n", addr);
1344 1263 return (DCMD_ERR);
1345 1264 }
1346 1265
1347 1266 mdb_inc_indent(4);
1348 1267 mdb_printf("%<u>%-?s %15s%</u>\n", "ADDR", "FRAGMENTATION");
1349 1268 if (mg.mg_fragmentation == ZFS_FRAG_INVALID)
1350 1269 mdb_printf("%0?p %15s\n", addr, "-");
1351 1270 else
1352 1271 mdb_printf("%0?p %15llu%%\n", addr, mg.mg_fragmentation);
1353 1272
1354 1273 if (spa_flags & SPA_FLAG_HISTOGRAMS)
1355 1274 dump_histogram(mg.mg_histogram, RANGE_TREE_HISTOGRAM_SIZE, 0);
1356 1275 mdb_dec_indent(4);
1357 1276 return (DCMD_OK);
1358 1277 }
1359 1278
1360 1279 /*
1361 1280 * ::vdev
1362 1281 *
1363 1282 * Print out a summarized vdev_t, in the following form:
1364 1283 *
1365 1284 * ADDR STATE AUX DESC
1366 1285 * fffffffbcde23df0 HEALTHY - /dev/dsk/c0t0d0
1367 1286 *
1368 1287 * If '-r' is specified, recursively visit all children.
1369 1288 *
1370 1289 * With '-e', the statistics associated with the vdev are printed as well.
1371 1290 */
1372 1291 static int
1373 1292 do_print_vdev(uintptr_t addr, int flags, int depth, boolean_t recursive,
1374 1293 int spa_flags)
1375 1294 {
1376 1295 vdev_t vdev;
1377 1296 char desc[MAXNAMELEN];
1378 1297 int c, children;
1379 1298 uintptr_t *child;
1380 1299 const char *state, *aux;
1381 1300
1382 1301 if (mdb_vread(&vdev, sizeof (vdev), (uintptr_t)addr) == -1) {
1383 1302 mdb_warn("failed to read vdev_t at %p\n", (uintptr_t)addr);
1384 1303 return (DCMD_ERR);
1385 1304 }
1386 1305
1387 1306 if (flags & DCMD_PIPE_OUT) {
1388 1307 mdb_printf("%#lr\n", addr);
1389 1308 } else {
1390 1309 if (vdev.vdev_path != NULL) {
1391 1310 if (mdb_readstr(desc, sizeof (desc),
1392 1311 (uintptr_t)vdev.vdev_path) == -1) {
1393 1312 mdb_warn("failed to read vdev_path at %p\n",
1394 1313 vdev.vdev_path);
1395 1314 return (DCMD_ERR);
1396 1315 }
1397 1316 } else if (vdev.vdev_ops != NULL) {
1398 1317 vdev_ops_t ops;
1399 1318 if (mdb_vread(&ops, sizeof (ops),
1400 1319 (uintptr_t)vdev.vdev_ops) == -1) {
1401 1320 mdb_warn("failed to read vdev_ops at %p\n",
1402 1321 vdev.vdev_ops);
1403 1322 return (DCMD_ERR);
1404 1323 }
1405 1324 (void) strcpy(desc, ops.vdev_op_type);
1406 1325 } else {
1407 1326 (void) strcpy(desc, "<unknown>");
1408 1327 }
1409 1328
1410 1329 if (depth == 0 && DCMD_HDRSPEC(flags))
1411 1330 mdb_printf("%<u>%-?s %-9s %-12s %-*s%</u>\n",
1412 1331 "ADDR", "STATE", "AUX",
1413 1332 sizeof (uintptr_t) == 4 ? 43 : 35,
1414 1333 "DESCRIPTION");
1415 1334
1416 1335 mdb_printf("%0?p ", addr);
1417 1336
1418 1337 switch (vdev.vdev_state) {
1419 1338 case VDEV_STATE_CLOSED:
1420 1339 state = "CLOSED";
1421 1340 break;
1422 1341 case VDEV_STATE_OFFLINE:
1423 1342 state = "OFFLINE";
1424 1343 break;
1425 1344 case VDEV_STATE_CANT_OPEN:
1426 1345 state = "CANT_OPEN";
1427 1346 break;
1428 1347 case VDEV_STATE_DEGRADED:
1429 1348 state = "DEGRADED";
1430 1349 break;
1431 1350 case VDEV_STATE_HEALTHY:
1432 1351 state = "HEALTHY";
1433 1352 break;
1434 1353 case VDEV_STATE_REMOVED:
1435 1354 state = "REMOVED";
1436 1355 break;
1437 1356 case VDEV_STATE_FAULTED:
1438 1357 state = "FAULTED";
1439 1358 break;
1440 1359 default:
1441 1360 state = "UNKNOWN";
1442 1361 break;
1443 1362 }
1444 1363
1445 1364 switch (vdev.vdev_stat.vs_aux) {
1446 1365 case VDEV_AUX_NONE:
1447 1366 aux = "-";
1448 1367 break;
1449 1368 case VDEV_AUX_OPEN_FAILED:
1450 1369 aux = "OPEN_FAILED";
1451 1370 break;
1452 1371 case VDEV_AUX_CORRUPT_DATA:
1453 1372 aux = "CORRUPT_DATA";
1454 1373 break;
1455 1374 case VDEV_AUX_NO_REPLICAS:
1456 1375 aux = "NO_REPLICAS";
1457 1376 break;
1458 1377 case VDEV_AUX_BAD_GUID_SUM:
1459 1378 aux = "BAD_GUID_SUM";
1460 1379 break;
1461 1380 case VDEV_AUX_TOO_SMALL:
1462 1381 aux = "TOO_SMALL";
1463 1382 break;
1464 1383 case VDEV_AUX_BAD_LABEL:
1465 1384 aux = "BAD_LABEL";
1466 1385 break;
1467 1386 case VDEV_AUX_VERSION_NEWER:
1468 1387 aux = "VERS_NEWER";
1469 1388 break;
1470 1389 case VDEV_AUX_VERSION_OLDER:
1471 1390 aux = "VERS_OLDER";
1472 1391 break;
1473 1392 case VDEV_AUX_UNSUP_FEAT:
1474 1393 aux = "UNSUP_FEAT";
1475 1394 break;
1476 1395 case VDEV_AUX_SPARED:
1477 1396 aux = "SPARED";
1478 1397 break;
1479 1398 case VDEV_AUX_ERR_EXCEEDED:
1480 1399 aux = "ERR_EXCEEDED";
1481 1400 break;
1482 1401 case VDEV_AUX_IO_FAILURE:
1483 1402 aux = "IO_FAILURE";
1484 1403 break;
1485 1404 case VDEV_AUX_BAD_LOG:
1486 1405 aux = "BAD_LOG";
1487 1406 break;
1488 1407 case VDEV_AUX_EXTERNAL:
1489 1408 aux = "EXTERNAL";
1490 1409 break;
1491 1410 case VDEV_AUX_SPLIT_POOL:
1492 1411 aux = "SPLIT_POOL";
1493 1412 break;
1494 1413 default:
1495 1414 aux = "UNKNOWN";
1496 1415 break;
1497 1416 }
1498 1417
1499 1418 mdb_printf("%-9s %-12s %*s%s\n", state, aux, depth, "", desc);
1500 1419
1501 1420 if (spa_flags & SPA_FLAG_ERRORS) {
1502 1421 vdev_stat_t *vs = &vdev.vdev_stat;
1503 1422 int i;
1504 1423
1505 1424 mdb_inc_indent(4);
1506 1425 mdb_printf("\n");
1507 1426 mdb_printf("%<u> %12s %12s %12s %12s "
1508 1427 "%12s%</u>\n", "READ", "WRITE", "FREE", "CLAIM",
1509 1428 "IOCTL");
1510 1429 mdb_printf("OPS ");
1511 1430 for (i = 1; i < ZIO_TYPES; i++)
1512 1431 mdb_printf("%11#llx%s", vs->vs_ops[i],
1513 1432 i == ZIO_TYPES - 1 ? "" : " ");
1514 1433 mdb_printf("\n");
1515 1434 mdb_printf("BYTES ");
1516 1435 for (i = 1; i < ZIO_TYPES; i++)
1517 1436 mdb_printf("%11#llx%s", vs->vs_bytes[i],
1518 1437 i == ZIO_TYPES - 1 ? "" : " ");
1519 1438
1520 1439
1521 1440 mdb_printf("\n");
1522 1441 mdb_printf("EREAD %10#llx\n", vs->vs_read_errors);
1523 1442 mdb_printf("EWRITE %10#llx\n", vs->vs_write_errors);
1524 1443 mdb_printf("ECKSUM %10#llx\n",
1525 1444 vs->vs_checksum_errors);
1526 1445 mdb_dec_indent(4);
1527 1446 mdb_printf("\n");
1528 1447 }
1529 1448
1530 1449 if (spa_flags & SPA_FLAG_METASLAB_GROUPS &&
1531 1450 vdev.vdev_mg != NULL) {
1532 1451 metaslab_group_stats((uintptr_t)vdev.vdev_mg,
1533 1452 spa_flags);
1534 1453 }
1535 1454 if (spa_flags & SPA_FLAG_METASLABS && vdev.vdev_ms != NULL) {
1536 1455 metaslab_stats((uintptr_t)addr, spa_flags);
1537 1456 }
1538 1457 }
1539 1458
1540 1459 children = vdev.vdev_children;
1541 1460
1542 1461 if (children == 0 || !recursive)
1543 1462 return (DCMD_OK);
1544 1463
1545 1464 child = mdb_alloc(children * sizeof (void *), UM_SLEEP | UM_GC);
1546 1465 if (mdb_vread(child, children * sizeof (void *),
1547 1466 (uintptr_t)vdev.vdev_child) == -1) {
1548 1467 mdb_warn("failed to read vdev children at %p", vdev.vdev_child);
1549 1468 return (DCMD_ERR);
1550 1469 }
1551 1470
1552 1471 for (c = 0; c < children; c++) {
1553 1472 if (do_print_vdev(child[c], flags, depth + 2, recursive,
1554 1473 spa_flags)) {
1555 1474 return (DCMD_ERR);
1556 1475 }
1557 1476 }
1558 1477
1559 1478 return (DCMD_OK);
1560 1479 }
1561 1480
1562 1481 static int
1563 1482 vdev_print(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
1564 1483 {
1565 1484 uint64_t depth = 0;
1566 1485 boolean_t recursive = B_FALSE;
1567 1486 int spa_flags = 0;
1568 1487
1569 1488 if (mdb_getopts(argc, argv,
1570 1489 'e', MDB_OPT_SETBITS, SPA_FLAG_ERRORS, &spa_flags,
1571 1490 'm', MDB_OPT_SETBITS, SPA_FLAG_METASLABS, &spa_flags,
1572 1491 'M', MDB_OPT_SETBITS, SPA_FLAG_METASLAB_GROUPS, &spa_flags,
1573 1492 'h', MDB_OPT_SETBITS, SPA_FLAG_HISTOGRAMS, &spa_flags,
1574 1493 'r', MDB_OPT_SETBITS, TRUE, &recursive,
1575 1494 'd', MDB_OPT_UINT64, &depth, NULL) != argc)
1576 1495 return (DCMD_USAGE);
1577 1496
1578 1497 if (!(flags & DCMD_ADDRSPEC)) {
1579 1498 mdb_warn("no vdev_t address given\n");
1580 1499 return (DCMD_ERR);
1581 1500 }
1582 1501
1583 1502 return (do_print_vdev(addr, flags, (int)depth, recursive, spa_flags));
1584 1503 }
1585 1504
1586 1505 typedef struct metaslab_walk_data {
1587 1506 uint64_t mw_numvdevs;
1588 1507 uintptr_t *mw_vdevs;
1589 1508 int mw_curvdev;
1590 1509 uint64_t mw_nummss;
1591 1510 uintptr_t *mw_mss;
1592 1511 int mw_curms;
1593 1512 } metaslab_walk_data_t;
1594 1513
1595 1514 static int
1596 1515 metaslab_walk_step(mdb_walk_state_t *wsp)
1597 1516 {
1598 1517 metaslab_walk_data_t *mw = wsp->walk_data;
1599 1518 metaslab_t ms;
1600 1519 uintptr_t msp;
1601 1520
1602 1521 if (mw->mw_curvdev >= mw->mw_numvdevs)
1603 1522 return (WALK_DONE);
1604 1523
1605 1524 if (mw->mw_mss == NULL) {
1606 1525 uintptr_t mssp;
1607 1526 uintptr_t vdevp;
1608 1527
1609 1528 ASSERT(mw->mw_curms == 0);
1610 1529 ASSERT(mw->mw_nummss == 0);
1611 1530
1612 1531 vdevp = mw->mw_vdevs[mw->mw_curvdev];
1613 1532 if (GETMEMB(vdevp, "vdev", vdev_ms, mssp) ||
1614 1533 GETMEMB(vdevp, "vdev", vdev_ms_count, mw->mw_nummss)) {
1615 1534 return (WALK_ERR);
1616 1535 }
1617 1536
1618 1537 mw->mw_mss = mdb_alloc(mw->mw_nummss * sizeof (void*),
1619 1538 UM_SLEEP | UM_GC);
1620 1539 if (mdb_vread(mw->mw_mss, mw->mw_nummss * sizeof (void*),
1621 1540 mssp) == -1) {
1622 1541 mdb_warn("failed to read vdev_ms at %p", mssp);
1623 1542 return (WALK_ERR);
1624 1543 }
1625 1544 }
1626 1545
1627 1546 if (mw->mw_curms >= mw->mw_nummss) {
1628 1547 mw->mw_mss = NULL;
1629 1548 mw->mw_curms = 0;
1630 1549 mw->mw_nummss = 0;
1631 1550 mw->mw_curvdev++;
1632 1551 return (WALK_NEXT);
1633 1552 }
1634 1553
1635 1554 msp = mw->mw_mss[mw->mw_curms];
1636 1555 if (mdb_vread(&ms, sizeof (metaslab_t), msp) == -1) {
1637 1556 mdb_warn("failed to read metaslab_t at %p", msp);
1638 1557 return (WALK_ERR);
1639 1558 }
1640 1559
1641 1560 mw->mw_curms++;
1642 1561
1643 1562 return (wsp->walk_callback(msp, &ms, wsp->walk_cbdata));
1644 1563 }
1645 1564
1646 1565 /* ARGSUSED */
1647 1566 static int
1648 1567 metaslab_walk_init(mdb_walk_state_t *wsp)
1649 1568 {
1650 1569 metaslab_walk_data_t *mw;
1651 1570 uintptr_t root_vdevp;
1652 1571 uintptr_t childp;
1653 1572
1654 1573 if (wsp->walk_addr == NULL) {
1655 1574 mdb_warn("must supply address of spa_t\n");
1656 1575 return (WALK_ERR);
1657 1576 }
1658 1577
1659 1578 mw = mdb_zalloc(sizeof (metaslab_walk_data_t), UM_SLEEP | UM_GC);
1660 1579
1661 1580 if (GETMEMB(wsp->walk_addr, "spa", spa_root_vdev, root_vdevp) ||
1662 1581 GETMEMB(root_vdevp, "vdev", vdev_children, mw->mw_numvdevs) ||
1663 1582 GETMEMB(root_vdevp, "vdev", vdev_child, childp)) {
1664 1583 return (DCMD_ERR);
1665 1584 }
1666 1585
1667 1586 mw->mw_vdevs = mdb_alloc(mw->mw_numvdevs * sizeof (void *),
1668 1587 UM_SLEEP | UM_GC);
1669 1588 if (mdb_vread(mw->mw_vdevs, mw->mw_numvdevs * sizeof (void *),
1670 1589 childp) == -1) {
1671 1590 mdb_warn("failed to read root vdev children at %p", childp);
1672 1591 return (DCMD_ERR);
1673 1592 }
1674 1593
1675 1594 wsp->walk_data = mw;
1676 1595
1677 1596 return (WALK_NEXT);
1678 1597 }
1679 1598
1680 1599 typedef struct mdb_spa {
1681 1600 uintptr_t spa_dsl_pool;
1682 1601 uintptr_t spa_root_vdev;
1683 1602 } mdb_spa_t;
1684 1603
1685 1604 typedef struct mdb_dsl_dir {
1686 1605 uintptr_t dd_phys;
1687 1606 int64_t dd_space_towrite[TXG_SIZE];
1688 1607 } mdb_dsl_dir_t;
1689 1608
1690 1609 typedef struct mdb_dsl_dir_phys {
1691 1610 uint64_t dd_used_bytes;
1692 1611 uint64_t dd_compressed_bytes;
1693 1612 uint64_t dd_uncompressed_bytes;
1694 1613 } mdb_dsl_dir_phys_t;
1695 1614
1696 1615 typedef struct space_data {
1697 1616 uint64_t ms_alloctree[TXG_SIZE];
1698 1617 uint64_t ms_freetree[TXG_SIZE];
1699 1618 uint64_t ms_tree;
1700 1619 uint64_t avail;
1701 1620 uint64_t nowavail;
1702 1621 } space_data_t;
1703 1622
1704 1623 /* ARGSUSED */
1705 1624 static int
1706 1625 space_cb(uintptr_t addr, const void *unknown, void *arg)
1707 1626 {
1708 1627 space_data_t *sd = arg;
1709 1628 mdb_metaslab_t ms;
1710 1629 mdb_range_tree_t rt;
1711 1630 mdb_space_map_t sm = { 0 };
1712 1631 mdb_space_map_phys_t smp = { 0 };
1713 1632 int i;
1714 1633
1715 1634 if (mdb_ctf_vread(&ms, "metaslab_t", "mdb_metaslab_t",
1716 1635 addr, 0) == -1)
1717 1636 return (WALK_ERR);
1718 1637
1719 1638 for (i = 0; i < TXG_SIZE; i++) {
1720 1639 if (mdb_ctf_vread(&rt, "range_tree_t",
1721 1640 "mdb_range_tree_t", ms.ms_alloctree[i], 0) == -1)
1722 1641 return (WALK_ERR);
1723 1642
1724 1643 sd->ms_alloctree[i] += rt.rt_space;
1725 1644
1726 1645 if (mdb_ctf_vread(&rt, "range_tree_t",
1727 1646 "mdb_range_tree_t", ms.ms_freetree[i], 0) == -1)
1728 1647 return (WALK_ERR);
1729 1648
1730 1649 sd->ms_freetree[i] += rt.rt_space;
1731 1650 }
1732 1651
1733 1652 if (mdb_ctf_vread(&rt, "range_tree_t",
1734 1653 "mdb_range_tree_t", ms.ms_tree, 0) == -1)
1735 1654 return (WALK_ERR);
1736 1655
1737 1656 if (ms.ms_sm != NULL &&
1738 1657 mdb_ctf_vread(&sm, "space_map_t",
1739 1658 "mdb_space_map_t", ms.ms_sm, 0) == -1)
1740 1659 return (WALK_ERR);
1741 1660
1742 1661 if (sm.sm_phys != NULL) {
1743 1662 (void) mdb_ctf_vread(&smp, "space_map_phys_t",
1744 1663 "mdb_space_map_phys_t", sm.sm_phys, 0);
1745 1664 }
1746 1665
1747 1666 sd->ms_tree += rt.rt_space;
1748 1667 sd->avail += sm.sm_size - sm.sm_alloc;
1749 1668 sd->nowavail += sm.sm_size - smp.smp_alloc;
1750 1669
1751 1670 return (WALK_NEXT);
1752 1671 }
1753 1672
1754 1673 /*
1755 1674 * ::spa_space [-b]
1756 1675 *
1757 1676 * Given a spa_t, print out it's on-disk space usage and in-core
1758 1677 * estimates of future usage. If -b is given, print space in bytes.
1759 1678 * Otherwise print in megabytes.
1760 1679 */
1761 1680 /* ARGSUSED */
1762 1681 static int
1763 1682 spa_space(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
1764 1683 {
1765 1684 mdb_spa_t spa;
1766 1685 uintptr_t dp_root_dir;
1767 1686 mdb_dsl_dir_t dd;
1768 1687 mdb_dsl_dir_phys_t dsp;
1769 1688 uint64_t children;
1770 1689 uintptr_t childaddr;
1771 1690 space_data_t sd;
1772 1691 int shift = 20;
1773 1692 char *suffix = "M";
1774 1693 int bytes = B_FALSE;
1775 1694
1776 1695 if (mdb_getopts(argc, argv, 'b', MDB_OPT_SETBITS, TRUE, &bytes, NULL) !=
1777 1696 argc)
1778 1697 return (DCMD_USAGE);
1779 1698 if (!(flags & DCMD_ADDRSPEC))
1780 1699 return (DCMD_USAGE);
1781 1700
1782 1701 if (bytes) {
1783 1702 shift = 0;
1784 1703 suffix = "";
1785 1704 }
1786 1705
1787 1706 if (GETMEMB(addr, "spa", spa_dsl_pool, spa.spa_dsl_pool) ||
1788 1707 GETMEMB(addr, "spa", spa_root_vdev, spa.spa_root_vdev) ||
1789 1708 GETMEMB(spa.spa_root_vdev, "vdev", vdev_children, children) ||
1790 1709 GETMEMB(spa.spa_root_vdev, "vdev", vdev_child, childaddr) ||
1791 1710 GETMEMB(spa.spa_dsl_pool, "dsl_pool",
1792 1711 dp_root_dir, dp_root_dir) ||
1793 1712 GETMEMB(dp_root_dir, "dsl_dir", dd_phys, dd.dd_phys) ||
1794 1713 GETMEMB(dp_root_dir, "dsl_dir",
1795 1714 dd_space_towrite, dd.dd_space_towrite) ||
1796 1715 GETMEMB(dd.dd_phys, "dsl_dir_phys",
1797 1716 dd_used_bytes, dsp.dd_used_bytes) ||
1798 1717 GETMEMB(dd.dd_phys, "dsl_dir_phys",
1799 1718 dd_compressed_bytes, dsp.dd_compressed_bytes) ||
1800 1719 GETMEMB(dd.dd_phys, "dsl_dir_phys",
1801 1720 dd_uncompressed_bytes, dsp.dd_uncompressed_bytes)) {
1802 1721 return (DCMD_ERR);
1803 1722 }
1804 1723
1805 1724 mdb_printf("dd_space_towrite = %llu%s %llu%s %llu%s %llu%s\n",
1806 1725 dd.dd_space_towrite[0] >> shift, suffix,
1807 1726 dd.dd_space_towrite[1] >> shift, suffix,
1808 1727 dd.dd_space_towrite[2] >> shift, suffix,
1809 1728 dd.dd_space_towrite[3] >> shift, suffix);
1810 1729
1811 1730 mdb_printf("dd_phys.dd_used_bytes = %llu%s\n",
1812 1731 dsp.dd_used_bytes >> shift, suffix);
1813 1732 mdb_printf("dd_phys.dd_compressed_bytes = %llu%s\n",
1814 1733 dsp.dd_compressed_bytes >> shift, suffix);
1815 1734 mdb_printf("dd_phys.dd_uncompressed_bytes = %llu%s\n",
1816 1735 dsp.dd_uncompressed_bytes >> shift, suffix);
1817 1736
1818 1737 bzero(&sd, sizeof (sd));
1819 1738 if (mdb_pwalk("metaslab", space_cb, &sd, addr) != 0) {
1820 1739 mdb_warn("can't walk metaslabs");
1821 1740 return (DCMD_ERR);
1822 1741 }
1823 1742
1824 1743 mdb_printf("ms_allocmap = %llu%s %llu%s %llu%s %llu%s\n",
1825 1744 sd.ms_alloctree[0] >> shift, suffix,
1826 1745 sd.ms_alloctree[1] >> shift, suffix,
1827 1746 sd.ms_alloctree[2] >> shift, suffix,
1828 1747 sd.ms_alloctree[3] >> shift, suffix);
1829 1748 mdb_printf("ms_freemap = %llu%s %llu%s %llu%s %llu%s\n",
1830 1749 sd.ms_freetree[0] >> shift, suffix,
1831 1750 sd.ms_freetree[1] >> shift, suffix,
1832 1751 sd.ms_freetree[2] >> shift, suffix,
1833 1752 sd.ms_freetree[3] >> shift, suffix);
1834 1753 mdb_printf("ms_tree = %llu%s\n", sd.ms_tree >> shift, suffix);
1835 1754 mdb_printf("last synced avail = %llu%s\n", sd.avail >> shift, suffix);
1836 1755 mdb_printf("current syncing avail = %llu%s\n",
1837 1756 sd.nowavail >> shift, suffix);
1838 1757
1839 1758 return (DCMD_OK);
1840 1759 }
1841 1760
1842 1761 typedef struct mdb_spa_aux_vdev {
1843 1762 int sav_count;
1844 1763 uintptr_t sav_vdevs;
1845 1764 } mdb_spa_aux_vdev_t;
1846 1765
1847 1766 typedef struct mdb_spa_vdevs {
1848 1767 uintptr_t spa_root_vdev;
1849 1768 mdb_spa_aux_vdev_t spa_l2cache;
1850 1769 mdb_spa_aux_vdev_t spa_spares;
1851 1770 } mdb_spa_vdevs_t;
1852 1771
1853 1772 static int
1854 1773 spa_print_aux(mdb_spa_aux_vdev_t *sav, uint_t flags, mdb_arg_t *v,
1855 1774 const char *name)
1856 1775 {
1857 1776 uintptr_t *aux;
1858 1777 size_t len;
1859 1778 int ret, i;
1860 1779
1861 1780 /*
1862 1781 * Iterate over aux vdevs and print those out as well. This is a
1863 1782 * little annoying because we don't have a root vdev to pass to ::vdev.
1864 1783 * Instead, we print a single line and then call it for each child
1865 1784 * vdev.
1866 1785 */
1867 1786 if (sav->sav_count != 0) {
1868 1787 v[1].a_type = MDB_TYPE_STRING;
1869 1788 v[1].a_un.a_str = "-d";
1870 1789 v[2].a_type = MDB_TYPE_IMMEDIATE;
1871 1790 v[2].a_un.a_val = 2;
1872 1791
1873 1792 len = sav->sav_count * sizeof (uintptr_t);
1874 1793 aux = mdb_alloc(len, UM_SLEEP);
1875 1794 if (mdb_vread(aux, len, sav->sav_vdevs) == -1) {
1876 1795 mdb_free(aux, len);
1877 1796 mdb_warn("failed to read l2cache vdevs at %p",
1878 1797 sav->sav_vdevs);
1879 1798 return (DCMD_ERR);
1880 1799 }
1881 1800
1882 1801 mdb_printf("%-?s %-9s %-12s %s\n", "-", "-", "-", name);
1883 1802
1884 1803 for (i = 0; i < sav->sav_count; i++) {
1885 1804 ret = mdb_call_dcmd("vdev", aux[i], flags, 3, v);
1886 1805 if (ret != DCMD_OK) {
1887 1806 mdb_free(aux, len);
1888 1807 return (ret);
1889 1808 }
1890 1809 }
1891 1810
1892 1811 mdb_free(aux, len);
1893 1812 }
1894 1813
1895 1814 return (0);
1896 1815 }
1897 1816
1898 1817 /*
1899 1818 * ::spa_vdevs
1900 1819 *
1901 1820 * -e Include error stats
1902 1821 * -m Include metaslab information
1903 1822 * -M Include metaslab group information
1904 1823 * -h Include histogram information (requires -m or -M)
1905 1824 *
1906 1825 * Print out a summarized list of vdevs for the given spa_t.
1907 1826 * This is accomplished by invoking "::vdev -re" on the root vdev, as well as
1908 1827 * iterating over the cache devices.
1909 1828 */
1910 1829 /* ARGSUSED */
1911 1830 static int
1912 1831 spa_vdevs(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
1913 1832 {
1914 1833 mdb_arg_t v[3];
1915 1834 int ret;
1916 1835 char opts[100] = "-r";
1917 1836 int spa_flags = 0;
1918 1837
1919 1838 if (mdb_getopts(argc, argv,
1920 1839 'e', MDB_OPT_SETBITS, SPA_FLAG_ERRORS, &spa_flags,
1921 1840 'm', MDB_OPT_SETBITS, SPA_FLAG_METASLABS, &spa_flags,
1922 1841 'M', MDB_OPT_SETBITS, SPA_FLAG_METASLAB_GROUPS, &spa_flags,
1923 1842 'h', MDB_OPT_SETBITS, SPA_FLAG_HISTOGRAMS, &spa_flags,
1924 1843 NULL) != argc)
1925 1844 return (DCMD_USAGE);
1926 1845
1927 1846 if (!(flags & DCMD_ADDRSPEC))
1928 1847 return (DCMD_USAGE);
1929 1848
1930 1849 mdb_spa_vdevs_t spa;
1931 1850 if (mdb_ctf_vread(&spa, "spa_t", "mdb_spa_vdevs_t", addr, 0) == -1)
1932 1851 return (DCMD_ERR);
1933 1852
1934 1853 /*
1935 1854 * Unitialized spa_t structures can have a NULL root vdev.
1936 1855 */
1937 1856 if (spa.spa_root_vdev == NULL) {
1938 1857 mdb_printf("no associated vdevs\n");
1939 1858 return (DCMD_OK);
1940 1859 }
1941 1860
1942 1861 if (spa_flags & SPA_FLAG_ERRORS)
1943 1862 strcat(opts, "e");
1944 1863 if (spa_flags & SPA_FLAG_METASLABS)
1945 1864 strcat(opts, "m");
1946 1865 if (spa_flags & SPA_FLAG_METASLAB_GROUPS)
1947 1866 strcat(opts, "M");
1948 1867 if (spa_flags & SPA_FLAG_HISTOGRAMS)
1949 1868 strcat(opts, "h");
1950 1869
1951 1870 v[0].a_type = MDB_TYPE_STRING;
1952 1871 v[0].a_un.a_str = opts;
1953 1872
1954 1873 ret = mdb_call_dcmd("vdev", (uintptr_t)spa.spa_root_vdev,
1955 1874 flags, 1, v);
1956 1875 if (ret != DCMD_OK)
1957 1876 return (ret);
1958 1877
1959 1878 if (spa_print_aux(&spa.spa_l2cache, flags, v, "cache") != 0 ||
1960 1879 spa_print_aux(&spa.spa_spares, flags, v, "spares") != 0)
1961 1880 return (DCMD_ERR);
1962 1881
1963 1882 return (DCMD_OK);
1964 1883 }
1965 1884
1966 1885 /*
1967 1886 * ::zio
1968 1887 *
1969 1888 * Print a summary of zio_t and all its children. This is intended to display a
1970 1889 * zio tree, and hence we only pick the most important pieces of information for
1971 1890 * the main summary. More detailed information can always be found by doing a
1972 1891 * '::print zio' on the underlying zio_t. The columns we display are:
1973 1892 *
1974 1893 * ADDRESS TYPE STAGE WAITER TIME_ELAPSED
1975 1894 *
1976 1895 * The 'address' column is indented by one space for each depth level as we
1977 1896 * descend down the tree.
1978 1897 */
1979 1898
1980 1899 #define ZIO_MAXINDENT 7
1981 1900 #define ZIO_MAXWIDTH (sizeof (uintptr_t) * 2 + ZIO_MAXINDENT)
1982 1901 #define ZIO_WALK_SELF 0
1983 1902 #define ZIO_WALK_CHILD 1
1984 1903 #define ZIO_WALK_PARENT 2
1985 1904
1986 1905 typedef struct zio_print_args {
1987 1906 int zpa_current_depth;
1988 1907 int zpa_min_depth;
1989 1908 int zpa_max_depth;
1990 1909 int zpa_type;
1991 1910 uint_t zpa_flags;
1992 1911 } zio_print_args_t;
1993 1912
1994 1913 typedef struct mdb_zio {
1995 1914 enum zio_type io_type;
1996 1915 enum zio_stage io_stage;
1997 1916 uintptr_t io_waiter;
1998 1917 uintptr_t io_spa;
1999 1918 struct {
2000 1919 struct {
2001 1920 uintptr_t list_next;
2002 1921 } list_head;
2003 1922 } io_parent_list;
2004 1923 int io_error;
2005 1924 } mdb_zio_t;
2006 1925
2007 1926 typedef struct mdb_zio_timestamp {
2008 1927 hrtime_t io_timestamp;
2009 1928 } mdb_zio_timestamp_t;
2010 1929
2011 1930 static int zio_child_cb(uintptr_t addr, const void *unknown, void *arg);
2012 1931
2013 1932 static int
2014 1933 zio_print_cb(uintptr_t addr, zio_print_args_t *zpa)
2015 1934 {
2016 1935 mdb_ctf_id_t type_enum, stage_enum;
2017 1936 int indent = zpa->zpa_current_depth;
2018 1937 const char *type, *stage;
2019 1938 uintptr_t laddr;
2020 1939 mdb_zio_t zio;
2021 1940 mdb_zio_timestamp_t zio_timestamp = { 0 };
2022 1941
2023 1942 if (mdb_ctf_vread(&zio, ZFS_STRUCT "zio", "mdb_zio_t", addr, 0) == -1)
2024 1943 return (WALK_ERR);
2025 1944 (void) mdb_ctf_vread(&zio_timestamp, ZFS_STRUCT "zio",
2026 1945 "mdb_zio_timestamp_t", addr, MDB_CTF_VREAD_QUIET);
2027 1946
2028 1947 if (indent > ZIO_MAXINDENT)
2029 1948 indent = ZIO_MAXINDENT;
2030 1949
2031 1950 if (mdb_ctf_lookup_by_name("enum zio_type", &type_enum) == -1 ||
2032 1951 mdb_ctf_lookup_by_name("enum zio_stage", &stage_enum) == -1) {
2033 1952 mdb_warn("failed to lookup zio enums");
2034 1953 return (WALK_ERR);
2035 1954 }
2036 1955
2037 1956 if ((type = mdb_ctf_enum_name(type_enum, zio.io_type)) != NULL)
2038 1957 type += sizeof ("ZIO_TYPE_") - 1;
2039 1958 else
2040 1959 type = "?";
2041 1960
2042 1961 if (zio.io_error == 0) {
2043 1962 stage = mdb_ctf_enum_name(stage_enum, zio.io_stage);
2044 1963 if (stage != NULL)
2045 1964 stage += sizeof ("ZIO_STAGE_") - 1;
2046 1965 else
2047 1966 stage = "?";
2048 1967 } else {
2049 1968 stage = "FAILED";
2050 1969 }
2051 1970
2052 1971 if (zpa->zpa_current_depth >= zpa->zpa_min_depth) {
2053 1972 if (zpa->zpa_flags & DCMD_PIPE_OUT) {
2054 1973 mdb_printf("%?p\n", addr);
2055 1974 } else {
2056 1975 mdb_printf("%*s%-*p %-5s %-16s ", indent, "",
2057 1976 ZIO_MAXWIDTH - indent, addr, type, stage);
2058 1977 if (zio.io_waiter != 0)
2059 1978 mdb_printf("%-16lx ", zio.io_waiter);
2060 1979 else
2061 1980 mdb_printf("%-16s ", "-");
2062 1981 #ifdef _KERNEL
2063 1982 if (zio_timestamp.io_timestamp != 0) {
2064 1983 mdb_printf("%llums", (mdb_gethrtime() -
2065 1984 zio_timestamp.io_timestamp) /
2066 1985 1000000);
2067 1986 } else {
2068 1987 mdb_printf("%-12s ", "-");
2069 1988 }
2070 1989 #else
2071 1990 mdb_printf("%-12s ", "-");
2072 1991 #endif
2073 1992 mdb_printf("\n");
2074 1993 }
2075 1994 }
2076 1995
2077 1996 if (zpa->zpa_current_depth >= zpa->zpa_max_depth)
2078 1997 return (WALK_NEXT);
2079 1998
2080 1999 if (zpa->zpa_type == ZIO_WALK_PARENT)
2081 2000 laddr = addr + mdb_ctf_offsetof_by_name(ZFS_STRUCT "zio",
2082 2001 "io_parent_list");
2083 2002 else
2084 2003 laddr = addr + mdb_ctf_offsetof_by_name(ZFS_STRUCT "zio",
2085 2004 "io_child_list");
2086 2005
2087 2006 zpa->zpa_current_depth++;
2088 2007 if (mdb_pwalk("list", zio_child_cb, zpa, laddr) != 0) {
2089 2008 mdb_warn("failed to walk zio_t children at %p\n", laddr);
2090 2009 return (WALK_ERR);
2091 2010 }
2092 2011 zpa->zpa_current_depth--;
2093 2012
2094 2013 return (WALK_NEXT);
2095 2014 }
2096 2015
2097 2016 /* ARGSUSED */
2098 2017 static int
2099 2018 zio_child_cb(uintptr_t addr, const void *unknown, void *arg)
2100 2019 {
2101 2020 zio_link_t zl;
2102 2021 uintptr_t ziop;
2103 2022 zio_print_args_t *zpa = arg;
2104 2023
2105 2024 if (mdb_vread(&zl, sizeof (zl), addr) == -1) {
2106 2025 mdb_warn("failed to read zio_link_t at %p", addr);
2107 2026 return (WALK_ERR);
2108 2027 }
2109 2028
2110 2029 if (zpa->zpa_type == ZIO_WALK_PARENT)
2111 2030 ziop = (uintptr_t)zl.zl_parent;
2112 2031 else
2113 2032 ziop = (uintptr_t)zl.zl_child;
2114 2033
2115 2034 return (zio_print_cb(ziop, zpa));
2116 2035 }
2117 2036
2118 2037 /* ARGSUSED */
2119 2038 static int
2120 2039 zio_print(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
2121 2040 {
2122 2041 zio_print_args_t zpa = { 0 };
2123 2042
2124 2043 if (!(flags & DCMD_ADDRSPEC))
2125 2044 return (DCMD_USAGE);
2126 2045
2127 2046 if (mdb_getopts(argc, argv,
2128 2047 'r', MDB_OPT_SETBITS, INT_MAX, &zpa.zpa_max_depth,
2129 2048 'c', MDB_OPT_SETBITS, ZIO_WALK_CHILD, &zpa.zpa_type,
2130 2049 'p', MDB_OPT_SETBITS, ZIO_WALK_PARENT, &zpa.zpa_type,
2131 2050 NULL) != argc)
2132 2051 return (DCMD_USAGE);
2133 2052
2134 2053 zpa.zpa_flags = flags;
2135 2054 if (zpa.zpa_max_depth != 0) {
2136 2055 if (zpa.zpa_type == ZIO_WALK_SELF)
2137 2056 zpa.zpa_type = ZIO_WALK_CHILD;
2138 2057 } else if (zpa.zpa_type != ZIO_WALK_SELF) {
2139 2058 zpa.zpa_min_depth = 1;
2140 2059 zpa.zpa_max_depth = 1;
2141 2060 }
2142 2061
2143 2062 if (!(flags & DCMD_PIPE_OUT) && DCMD_HDRSPEC(flags)) {
2144 2063 mdb_printf("%<u>%-*s %-5s %-16s %-16s %-12s%</u>\n",
2145 2064 ZIO_MAXWIDTH, "ADDRESS", "TYPE", "STAGE", "WAITER",
2146 2065 "TIME_ELAPSED");
2147 2066 }
2148 2067
2149 2068 if (zio_print_cb(addr, &zpa) != WALK_NEXT)
2150 2069 return (DCMD_ERR);
2151 2070
2152 2071 return (DCMD_OK);
2153 2072 }
2154 2073
2155 2074 /*
2156 2075 * [addr]::zio_state
2157 2076 *
2158 2077 * Print a summary of all zio_t structures on the system, or for a particular
2159 2078 * pool. This is equivalent to '::walk zio_root | ::zio'.
2160 2079 */
2161 2080 /*ARGSUSED*/
2162 2081 static int
2163 2082 zio_state(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
2164 2083 {
2165 2084 /*
2166 2085 * MDB will remember the last address of the pipeline, so if we don't
2167 2086 * zero this we'll end up trying to walk zio structures for a
2168 2087 * non-existent spa_t.
2169 2088 */
2170 2089 if (!(flags & DCMD_ADDRSPEC))
2171 2090 addr = 0;
2172 2091
2173 2092 return (mdb_pwalk_dcmd("zio_root", "zio", argc, argv, addr));
2174 2093 }
2175 2094
2176 2095 typedef struct txg_list_walk_data {
2177 2096 uintptr_t lw_head[TXG_SIZE];
2178 2097 int lw_txgoff;
2179 2098 int lw_maxoff;
2180 2099 size_t lw_offset;
2181 2100 void *lw_obj;
2182 2101 } txg_list_walk_data_t;
2183 2102
2184 2103 static int
2185 2104 txg_list_walk_init_common(mdb_walk_state_t *wsp, int txg, int maxoff)
2186 2105 {
2187 2106 txg_list_walk_data_t *lwd;
2188 2107 txg_list_t list;
2189 2108 int i;
2190 2109
2191 2110 lwd = mdb_alloc(sizeof (txg_list_walk_data_t), UM_SLEEP | UM_GC);
2192 2111 if (mdb_vread(&list, sizeof (txg_list_t), wsp->walk_addr) == -1) {
2193 2112 mdb_warn("failed to read txg_list_t at %#lx", wsp->walk_addr);
2194 2113 return (WALK_ERR);
2195 2114 }
2196 2115
2197 2116 for (i = 0; i < TXG_SIZE; i++)
2198 2117 lwd->lw_head[i] = (uintptr_t)list.tl_head[i];
2199 2118 lwd->lw_offset = list.tl_offset;
2200 2119 lwd->lw_obj = mdb_alloc(lwd->lw_offset + sizeof (txg_node_t),
2201 2120 UM_SLEEP | UM_GC);
2202 2121 lwd->lw_txgoff = txg;
2203 2122 lwd->lw_maxoff = maxoff;
2204 2123
2205 2124 wsp->walk_addr = lwd->lw_head[lwd->lw_txgoff];
2206 2125 wsp->walk_data = lwd;
2207 2126
2208 2127 return (WALK_NEXT);
2209 2128 }
2210 2129
2211 2130 static int
2212 2131 txg_list_walk_init(mdb_walk_state_t *wsp)
2213 2132 {
2214 2133 return (txg_list_walk_init_common(wsp, 0, TXG_SIZE-1));
2215 2134 }
2216 2135
2217 2136 static int
2218 2137 txg_list0_walk_init(mdb_walk_state_t *wsp)
2219 2138 {
2220 2139 return (txg_list_walk_init_common(wsp, 0, 0));
2221 2140 }
2222 2141
2223 2142 static int
2224 2143 txg_list1_walk_init(mdb_walk_state_t *wsp)
2225 2144 {
2226 2145 return (txg_list_walk_init_common(wsp, 1, 1));
2227 2146 }
2228 2147
2229 2148 static int
2230 2149 txg_list2_walk_init(mdb_walk_state_t *wsp)
2231 2150 {
2232 2151 return (txg_list_walk_init_common(wsp, 2, 2));
2233 2152 }
2234 2153
2235 2154 static int
2236 2155 txg_list3_walk_init(mdb_walk_state_t *wsp)
2237 2156 {
2238 2157 return (txg_list_walk_init_common(wsp, 3, 3));
2239 2158 }
2240 2159
2241 2160 static int
2242 2161 txg_list_walk_step(mdb_walk_state_t *wsp)
2243 2162 {
2244 2163 txg_list_walk_data_t *lwd = wsp->walk_data;
2245 2164 uintptr_t addr;
2246 2165 txg_node_t *node;
2247 2166 int status;
2248 2167
2249 2168 while (wsp->walk_addr == NULL && lwd->lw_txgoff < lwd->lw_maxoff) {
2250 2169 lwd->lw_txgoff++;
2251 2170 wsp->walk_addr = lwd->lw_head[lwd->lw_txgoff];
2252 2171 }
2253 2172
2254 2173 if (wsp->walk_addr == NULL)
2255 2174 return (WALK_DONE);
2256 2175
2257 2176 addr = wsp->walk_addr - lwd->lw_offset;
2258 2177
2259 2178 if (mdb_vread(lwd->lw_obj,
2260 2179 lwd->lw_offset + sizeof (txg_node_t), addr) == -1) {
2261 2180 mdb_warn("failed to read list element at %#lx", addr);
2262 2181 return (WALK_ERR);
2263 2182 }
2264 2183
2265 2184 status = wsp->walk_callback(addr, lwd->lw_obj, wsp->walk_cbdata);
2266 2185 node = (txg_node_t *)((uintptr_t)lwd->lw_obj + lwd->lw_offset);
2267 2186 wsp->walk_addr = (uintptr_t)node->tn_next[lwd->lw_txgoff];
2268 2187
2269 2188 return (status);
2270 2189 }
2271 2190
2272 2191 /*
2273 2192 * ::walk spa
2274 2193 *
2275 2194 * Walk all named spa_t structures in the namespace. This is nothing more than
2276 2195 * a layered avl walk.
2277 2196 */
2278 2197 static int
2279 2198 spa_walk_init(mdb_walk_state_t *wsp)
2280 2199 {
2281 2200 GElf_Sym sym;
2282 2201
2283 2202 if (wsp->walk_addr != NULL) {
2284 2203 mdb_warn("spa walk only supports global walks\n");
2285 2204 return (WALK_ERR);
2286 2205 }
2287 2206
2288 2207 if (mdb_lookup_by_obj(ZFS_OBJ_NAME, "spa_namespace_avl", &sym) == -1) {
2289 2208 mdb_warn("failed to find symbol 'spa_namespace_avl'");
2290 2209 return (WALK_ERR);
2291 2210 }
2292 2211
2293 2212 wsp->walk_addr = (uintptr_t)sym.st_value;
2294 2213
2295 2214 if (mdb_layered_walk("avl", wsp) == -1) {
2296 2215 mdb_warn("failed to walk 'avl'\n");
2297 2216 return (WALK_ERR);
2298 2217 }
2299 2218
2300 2219 return (WALK_NEXT);
2301 2220 }
2302 2221
2303 2222 static int
2304 2223 spa_walk_step(mdb_walk_state_t *wsp)
2305 2224 {
2306 2225 return (wsp->walk_callback(wsp->walk_addr, NULL, wsp->walk_cbdata));
2307 2226 }
2308 2227
2309 2228 /*
2310 2229 * [addr]::walk zio
2311 2230 *
2312 2231 * Walk all active zio_t structures on the system. This is simply a layered
2313 2232 * walk on top of ::walk zio_cache, with the optional ability to limit the
2314 2233 * structures to a particular pool.
2315 2234 */
2316 2235 static int
2317 2236 zio_walk_init(mdb_walk_state_t *wsp)
2318 2237 {
2319 2238 wsp->walk_data = (void *)wsp->walk_addr;
2320 2239
2321 2240 if (mdb_layered_walk("zio_cache", wsp) == -1) {
2322 2241 mdb_warn("failed to walk 'zio_cache'\n");
2323 2242 return (WALK_ERR);
2324 2243 }
2325 2244
2326 2245 return (WALK_NEXT);
2327 2246 }
2328 2247
2329 2248 static int
2330 2249 zio_walk_step(mdb_walk_state_t *wsp)
2331 2250 {
2332 2251 mdb_zio_t zio;
2333 2252 uintptr_t spa = (uintptr_t)wsp->walk_data;
2334 2253
2335 2254 if (mdb_ctf_vread(&zio, ZFS_STRUCT "zio", "mdb_zio_t",
2336 2255 wsp->walk_addr, 0) == -1)
2337 2256 return (WALK_ERR);
2338 2257
2339 2258 if (spa != 0 && spa != zio.io_spa)
2340 2259 return (WALK_NEXT);
2341 2260
2342 2261 return (wsp->walk_callback(wsp->walk_addr, &zio, wsp->walk_cbdata));
2343 2262 }
2344 2263
2345 2264 /*
2346 2265 * [addr]::walk zio_root
2347 2266 *
2348 2267 * Walk only root zio_t structures, optionally for a particular spa_t.
2349 2268 */
2350 2269 static int
2351 2270 zio_walk_root_step(mdb_walk_state_t *wsp)
2352 2271 {
2353 2272 mdb_zio_t zio;
2354 2273 uintptr_t spa = (uintptr_t)wsp->walk_data;
2355 2274
2356 2275 if (mdb_ctf_vread(&zio, ZFS_STRUCT "zio", "mdb_zio_t",
2357 2276 wsp->walk_addr, 0) == -1)
2358 2277 return (WALK_ERR);
2359 2278
2360 2279 if (spa != 0 && spa != zio.io_spa)
2361 2280 return (WALK_NEXT);
2362 2281
2363 2282 /* If the parent list is not empty, ignore */
2364 2283 if (zio.io_parent_list.list_head.list_next !=
2365 2284 wsp->walk_addr +
2366 2285 mdb_ctf_offsetof_by_name(ZFS_STRUCT "zio", "io_parent_list") +
2367 2286 mdb_ctf_offsetof_by_name("struct list", "list_head"))
2368 2287 return (WALK_NEXT);
2369 2288
2370 2289 return (wsp->walk_callback(wsp->walk_addr, &zio, wsp->walk_cbdata));
2371 2290 }
2372 2291
2373 2292 /*
2374 2293 * ::zfs_blkstats
2375 2294 *
2376 2295 * -v print verbose per-level information
2377 2296 *
2378 2297 */
2379 2298 static int
2380 2299 zfs_blkstats(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
2381 2300 {
2382 2301 boolean_t verbose = B_FALSE;
2383 2302 zfs_all_blkstats_t stats;
2384 2303 dmu_object_type_t t;
2385 2304 zfs_blkstat_t *tzb;
2386 2305 uint64_t ditto;
2387 2306 dmu_object_type_info_t dmu_ot[DMU_OT_NUMTYPES + 10];
2388 2307 /* +10 in case it grew */
2389 2308
2390 2309 if (mdb_readvar(&dmu_ot, "dmu_ot") == -1) {
2391 2310 mdb_warn("failed to read 'dmu_ot'");
2392 2311 return (DCMD_ERR);
2393 2312 }
2394 2313
2395 2314 if (mdb_getopts(argc, argv,
2396 2315 'v', MDB_OPT_SETBITS, TRUE, &verbose,
2397 2316 NULL) != argc)
2398 2317 return (DCMD_USAGE);
2399 2318
2400 2319 if (!(flags & DCMD_ADDRSPEC))
2401 2320 return (DCMD_USAGE);
2402 2321
2403 2322 if (GETMEMB(addr, "spa", spa_dsl_pool, addr) ||
2404 2323 GETMEMB(addr, "dsl_pool", dp_blkstats, addr) ||
2405 2324 mdb_vread(&stats, sizeof (zfs_all_blkstats_t), addr) == -1) {
2406 2325 mdb_warn("failed to read data at %p;", addr);
2407 2326 mdb_printf("maybe no stats? run \"zpool scrub\" first.");
2408 2327 return (DCMD_ERR);
2409 2328 }
2410 2329
2411 2330 tzb = &stats.zab_type[DN_MAX_LEVELS][DMU_OT_TOTAL];
2412 2331 if (tzb->zb_gangs != 0) {
2413 2332 mdb_printf("Ganged blocks: %llu\n",
2414 2333 (longlong_t)tzb->zb_gangs);
2415 2334 }
2416 2335
2417 2336 ditto = tzb->zb_ditto_2_of_2_samevdev + tzb->zb_ditto_2_of_3_samevdev +
2418 2337 tzb->zb_ditto_3_of_3_samevdev;
2419 2338 if (ditto != 0) {
2420 2339 mdb_printf("Dittoed blocks on same vdev: %llu\n",
2421 2340 (longlong_t)ditto);
2422 2341 }
2423 2342
2424 2343 mdb_printf("\nBlocks\tLSIZE\tPSIZE\tASIZE"
2425 2344 "\t avg\t comp\t%%Total\tType\n");
2426 2345
2427 2346 for (t = 0; t <= DMU_OT_TOTAL; t++) {
2428 2347 char csize[NICENUM_BUFLEN], lsize[NICENUM_BUFLEN];
2429 2348 char psize[NICENUM_BUFLEN], asize[NICENUM_BUFLEN];
2430 2349 char avg[NICENUM_BUFLEN];
2431 2350 char comp[NICENUM_BUFLEN], pct[NICENUM_BUFLEN];
2432 2351 char typename[64];
2433 2352 int l;
2434 2353
2435 2354
2436 2355 if (t == DMU_OT_DEFERRED)
2437 2356 strcpy(typename, "deferred free");
2438 2357 else if (t == DMU_OT_OTHER)
2439 2358 strcpy(typename, "other");
2440 2359 else if (t == DMU_OT_TOTAL)
2441 2360 strcpy(typename, "Total");
2442 2361 else if (mdb_readstr(typename, sizeof (typename),
2443 2362 (uintptr_t)dmu_ot[t].ot_name) == -1) {
2444 2363 mdb_warn("failed to read type name");
2445 2364 return (DCMD_ERR);
2446 2365 }
2447 2366
2448 2367 if (stats.zab_type[DN_MAX_LEVELS][t].zb_asize == 0)
2449 2368 continue;
2450 2369
2451 2370 for (l = -1; l < DN_MAX_LEVELS; l++) {
2452 2371 int level = (l == -1 ? DN_MAX_LEVELS : l);
2453 2372 zfs_blkstat_t *zb = &stats.zab_type[level][t];
2454 2373
2455 2374 if (zb->zb_asize == 0)
2456 2375 continue;
2457 2376
2458 2377 /*
2459 2378 * Don't print each level unless requested.
2460 2379 */
2461 2380 if (!verbose && level != DN_MAX_LEVELS)
2462 2381 continue;
2463 2382
2464 2383 /*
2465 2384 * If all the space is level 0, don't print the
2466 2385 * level 0 separately.
2467 2386 */
2468 2387 if (level == 0 && zb->zb_asize ==
2469 2388 stats.zab_type[DN_MAX_LEVELS][t].zb_asize)
2470 2389 continue;
2471 2390
2472 2391 mdb_nicenum(zb->zb_count, csize);
2473 2392 mdb_nicenum(zb->zb_lsize, lsize);
2474 2393 mdb_nicenum(zb->zb_psize, psize);
2475 2394 mdb_nicenum(zb->zb_asize, asize);
2476 2395 mdb_nicenum(zb->zb_asize / zb->zb_count, avg);
2477 2396 (void) snprintfrac(comp, NICENUM_BUFLEN,
2478 2397 zb->zb_lsize, zb->zb_psize, 2);
2479 2398 (void) snprintfrac(pct, NICENUM_BUFLEN,
2480 2399 100 * zb->zb_asize, tzb->zb_asize, 2);
2481 2400
2482 2401 mdb_printf("%6s\t%5s\t%5s\t%5s\t%5s"
2483 2402 "\t%5s\t%6s\t",
2484 2403 csize, lsize, psize, asize, avg, comp, pct);
2485 2404
2486 2405 if (level == DN_MAX_LEVELS)
2487 2406 mdb_printf("%s\n", typename);
2488 2407 else
2489 2408 mdb_printf(" L%d %s\n",
2490 2409 level, typename);
2491 2410 }
2492 2411 }
2493 2412
2494 2413 return (DCMD_OK);
2495 2414 }
2496 2415
2497 2416 typedef struct mdb_reference {
2498 2417 uintptr_t ref_holder;
2499 2418 uintptr_t ref_removed;
2500 2419 uint64_t ref_number;
2501 2420 } mdb_reference_t;
2502 2421
2503 2422 /* ARGSUSED */
2504 2423 static int
2505 2424 reference_cb(uintptr_t addr, const void *ignored, void *arg)
2506 2425 {
2507 2426 mdb_reference_t ref;
2508 2427 boolean_t holder_is_str = B_FALSE;
2509 2428 char holder_str[128];
2510 2429 boolean_t removed = (boolean_t)arg;
2511 2430
2512 2431 if (mdb_ctf_vread(&ref, "reference_t", "mdb_reference_t", addr,
2513 2432 0) == -1)
2514 2433 return (DCMD_ERR);
2515 2434
2516 2435 if (mdb_readstr(holder_str, sizeof (holder_str),
2517 2436 ref.ref_holder) != -1)
2518 2437 holder_is_str = strisprint(holder_str);
2519 2438
2520 2439 if (removed)
2521 2440 mdb_printf("removed ");
2522 2441 mdb_printf("reference ");
2523 2442 if (ref.ref_number != 1)
2524 2443 mdb_printf("with count=%llu ", ref.ref_number);
2525 2444 mdb_printf("with tag %lx", ref.ref_holder);
2526 2445 if (holder_is_str)
2527 2446 mdb_printf(" \"%s\"", holder_str);
2528 2447 mdb_printf(", held at:\n");
2529 2448
2530 2449 (void) mdb_call_dcmd("whatis", addr, DCMD_ADDRSPEC, 0, NULL);
2531 2450
2532 2451 if (removed) {
2533 2452 mdb_printf("removed at:\n");
2534 2453 (void) mdb_call_dcmd("whatis", ref.ref_removed,
2535 2454 DCMD_ADDRSPEC, 0, NULL);
2536 2455 }
2537 2456
2538 2457 mdb_printf("\n");
2539 2458
2540 2459 return (WALK_NEXT);
2541 2460 }
2542 2461
2543 2462 typedef struct mdb_refcount {
2544 2463 uint64_t rc_count;
2545 2464 } mdb_refcount_t;
2546 2465
2547 2466 typedef struct mdb_refcount_removed {
2548 2467 uint64_t rc_removed_count;
2549 2468 } mdb_refcount_removed_t;
2550 2469
2551 2470 typedef struct mdb_refcount_tracked {
2552 2471 boolean_t rc_tracked;
2553 2472 } mdb_refcount_tracked_t;
2554 2473
2555 2474 /* ARGSUSED */
2556 2475 static int
2557 2476 refcount(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
2558 2477 {
2559 2478 mdb_refcount_t rc;
2560 2479 mdb_refcount_removed_t rcr;
2561 2480 mdb_refcount_tracked_t rct;
2562 2481 int off;
2563 2482 boolean_t released = B_FALSE;
2564 2483
2565 2484 if (!(flags & DCMD_ADDRSPEC))
2566 2485 return (DCMD_USAGE);
2567 2486
2568 2487 if (mdb_getopts(argc, argv,
2569 2488 'r', MDB_OPT_SETBITS, B_TRUE, &released,
2570 2489 NULL) != argc)
2571 2490 return (DCMD_USAGE);
2572 2491
2573 2492 if (mdb_ctf_vread(&rc, "refcount_t", "mdb_refcount_t", addr,
2574 2493 0) == -1)
2575 2494 return (DCMD_ERR);
2576 2495
2577 2496 if (mdb_ctf_vread(&rcr, "refcount_t", "mdb_refcount_removed_t", addr,
2578 2497 MDB_CTF_VREAD_QUIET) == -1) {
2579 2498 mdb_printf("refcount_t at %p has %llu holds (untracked)\n",
2580 2499 addr, (longlong_t)rc.rc_count);
2581 2500 return (DCMD_OK);
2582 2501 }
2583 2502
2584 2503 if (mdb_ctf_vread(&rct, "refcount_t", "mdb_refcount_tracked_t", addr,
2585 2504 MDB_CTF_VREAD_QUIET) == -1) {
2586 2505 /* If this is an old target, it might be tracked. */
2587 2506 rct.rc_tracked = B_TRUE;
2588 2507 }
2589 2508
2590 2509 mdb_printf("refcount_t at %p has %llu current holds, "
2591 2510 "%llu recently released holds\n",
2592 2511 addr, (longlong_t)rc.rc_count, (longlong_t)rcr.rc_removed_count);
2593 2512
2594 2513 if (rct.rc_tracked && rc.rc_count > 0)
2595 2514 mdb_printf("current holds:\n");
2596 2515 off = mdb_ctf_offsetof_by_name("refcount_t", "rc_list");
2597 2516 if (off == -1)
2598 2517 return (DCMD_ERR);
2599 2518 mdb_pwalk("list", reference_cb, (void*)B_FALSE, addr + off);
2600 2519
2601 2520 if (released && rcr.rc_removed_count > 0) {
2602 2521 mdb_printf("released holds:\n");
2603 2522
2604 2523 off = mdb_ctf_offsetof_by_name("refcount_t", "rc_removed");
2605 2524 if (off == -1)
2606 2525 return (DCMD_ERR);
2607 2526 mdb_pwalk("list", reference_cb, (void*)B_FALSE, addr + off);
2608 2527 }
2609 2528
2610 2529 return (DCMD_OK);
2611 2530 }
2612 2531
2613 2532 /* ARGSUSED */
2614 2533 static int
2615 2534 sa_attr_table(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
2616 2535 {
2617 2536 sa_attr_table_t *table;
2618 2537 sa_os_t sa_os;
2619 2538 char *name;
2620 2539 int i;
2621 2540
2622 2541 if (mdb_vread(&sa_os, sizeof (sa_os_t), addr) == -1) {
2623 2542 mdb_warn("failed to read sa_os at %p", addr);
2624 2543 return (DCMD_ERR);
2625 2544 }
2626 2545
2627 2546 table = mdb_alloc(sizeof (sa_attr_table_t) * sa_os.sa_num_attrs,
2628 2547 UM_SLEEP | UM_GC);
2629 2548 name = mdb_alloc(MAXPATHLEN, UM_SLEEP | UM_GC);
2630 2549
2631 2550 if (mdb_vread(table, sizeof (sa_attr_table_t) * sa_os.sa_num_attrs,
2632 2551 (uintptr_t)sa_os.sa_attr_table) == -1) {
2633 2552 mdb_warn("failed to read sa_os at %p", addr);
2634 2553 return (DCMD_ERR);
2635 2554 }
2636 2555
2637 2556 mdb_printf("%<u>%-10s %-10s %-10s %-10s %s%</u>\n",
2638 2557 "ATTR ID", "REGISTERED", "LENGTH", "BSWAP", "NAME");
2639 2558 for (i = 0; i != sa_os.sa_num_attrs; i++) {
2640 2559 mdb_readstr(name, MAXPATHLEN, (uintptr_t)table[i].sa_name);
2641 2560 mdb_printf("%5x %8x %8x %8x %-s\n",
2642 2561 (int)table[i].sa_attr, (int)table[i].sa_registered,
2643 2562 (int)table[i].sa_length, table[i].sa_byteswap, name);
2644 2563 }
2645 2564
2646 2565 return (DCMD_OK);
2647 2566 }
2648 2567
2649 2568 static int
2650 2569 sa_get_off_table(uintptr_t addr, uint32_t **off_tab, int attr_count)
2651 2570 {
2652 2571 uintptr_t idx_table;
2653 2572
2654 2573 if (GETMEMB(addr, "sa_idx_tab", sa_idx_tab, idx_table)) {
2655 2574 mdb_printf("can't find offset table in sa_idx_tab\n");
2656 2575 return (-1);
2657 2576 }
2658 2577
2659 2578 *off_tab = mdb_alloc(attr_count * sizeof (uint32_t),
2660 2579 UM_SLEEP | UM_GC);
2661 2580
2662 2581 if (mdb_vread(*off_tab,
2663 2582 attr_count * sizeof (uint32_t), idx_table) == -1) {
2664 2583 mdb_warn("failed to attribute offset table %p", idx_table);
2665 2584 return (-1);
2666 2585 }
2667 2586
2668 2587 return (DCMD_OK);
2669 2588 }
2670 2589
2671 2590 /*ARGSUSED*/
2672 2591 static int
2673 2592 sa_attr_print(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
2674 2593 {
2675 2594 uint32_t *offset_tab;
2676 2595 int attr_count;
2677 2596 uint64_t attr_id;
2678 2597 uintptr_t attr_addr;
2679 2598 uintptr_t bonus_tab, spill_tab;
2680 2599 uintptr_t db_bonus, db_spill;
2681 2600 uintptr_t os, os_sa;
2682 2601 uintptr_t db_data;
2683 2602
2684 2603 if (argc != 1)
2685 2604 return (DCMD_USAGE);
2686 2605
2687 2606 if (argv[0].a_type == MDB_TYPE_STRING)
2688 2607 attr_id = mdb_strtoull(argv[0].a_un.a_str);
2689 2608 else
2690 2609 return (DCMD_USAGE);
2691 2610
2692 2611 if (GETMEMB(addr, "sa_handle", sa_bonus_tab, bonus_tab) ||
2693 2612 GETMEMB(addr, "sa_handle", sa_spill_tab, spill_tab) ||
2694 2613 GETMEMB(addr, "sa_handle", sa_os, os) ||
2695 2614 GETMEMB(addr, "sa_handle", sa_bonus, db_bonus) ||
2696 2615 GETMEMB(addr, "sa_handle", sa_spill, db_spill)) {
2697 2616 mdb_printf("Can't find necessary information in sa_handle "
2698 2617 "in sa_handle\n");
2699 2618 return (DCMD_ERR);
2700 2619 }
2701 2620
2702 2621 if (GETMEMB(os, "objset", os_sa, os_sa)) {
2703 2622 mdb_printf("Can't find os_sa in objset\n");
2704 2623 return (DCMD_ERR);
2705 2624 }
2706 2625
2707 2626 if (GETMEMB(os_sa, "sa_os", sa_num_attrs, attr_count)) {
2708 2627 mdb_printf("Can't find sa_num_attrs\n");
2709 2628 return (DCMD_ERR);
2710 2629 }
2711 2630
2712 2631 if (attr_id > attr_count) {
2713 2632 mdb_printf("attribute id number is out of range\n");
2714 2633 return (DCMD_ERR);
2715 2634 }
2716 2635
2717 2636 if (bonus_tab) {
2718 2637 if (sa_get_off_table(bonus_tab, &offset_tab,
2719 2638 attr_count) == -1) {
2720 2639 return (DCMD_ERR);
2721 2640 }
2722 2641
2723 2642 if (GETMEMB(db_bonus, "dmu_buf", db_data, db_data)) {
2724 2643 mdb_printf("can't find db_data in bonus dbuf\n");
2725 2644 return (DCMD_ERR);
2726 2645 }
2727 2646 }
2728 2647
2729 2648 if (bonus_tab && !TOC_ATTR_PRESENT(offset_tab[attr_id]) &&
2730 2649 spill_tab == NULL) {
2731 2650 mdb_printf("Attribute does not exist\n");
2732 2651 return (DCMD_ERR);
2733 2652 } else if (!TOC_ATTR_PRESENT(offset_tab[attr_id]) && spill_tab) {
2734 2653 if (sa_get_off_table(spill_tab, &offset_tab,
2735 2654 attr_count) == -1) {
2736 2655 return (DCMD_ERR);
2737 2656 }
2738 2657 if (GETMEMB(db_spill, "dmu_buf", db_data, db_data)) {
2739 2658 mdb_printf("can't find db_data in spill dbuf\n");
2740 2659 return (DCMD_ERR);
2741 2660 }
2742 2661 if (!TOC_ATTR_PRESENT(offset_tab[attr_id])) {
2743 2662 mdb_printf("Attribute does not exist\n");
2744 2663 return (DCMD_ERR);
2745 2664 }
2746 2665 }
2747 2666 attr_addr = db_data + TOC_OFF(offset_tab[attr_id]);
2748 2667 mdb_printf("%p\n", attr_addr);
2749 2668 return (DCMD_OK);
2750 2669 }
2751 2670
2752 2671 /* ARGSUSED */
2753 2672 static int
2754 2673 zfs_ace_print_common(uintptr_t addr, uint_t flags,
2755 2674 uint64_t id, uint32_t access_mask, uint16_t ace_flags,
2756 2675 uint16_t ace_type, int verbose)
2757 2676 {
2758 2677 if (DCMD_HDRSPEC(flags) && !verbose)
2759 2678 mdb_printf("%<u>%-?s %-8s %-8s %-8s %s%</u>\n",
2760 2679 "ADDR", "FLAGS", "MASK", "TYPE", "ID");
2761 2680
2762 2681 if (!verbose) {
2763 2682 mdb_printf("%0?p %-8x %-8x %-8x %-llx\n", addr,
2764 2683 ace_flags, access_mask, ace_type, id);
2765 2684 return (DCMD_OK);
2766 2685 }
2767 2686
2768 2687 switch (ace_flags & ACE_TYPE_FLAGS) {
2769 2688 case ACE_OWNER:
2770 2689 mdb_printf("owner@:");
2771 2690 break;
2772 2691 case (ACE_IDENTIFIER_GROUP | ACE_GROUP):
2773 2692 mdb_printf("group@:");
2774 2693 break;
2775 2694 case ACE_EVERYONE:
2776 2695 mdb_printf("everyone@:");
2777 2696 break;
2778 2697 case ACE_IDENTIFIER_GROUP:
2779 2698 mdb_printf("group:%llx:", (u_longlong_t)id);
2780 2699 break;
2781 2700 case 0: /* User entry */
2782 2701 mdb_printf("user:%llx:", (u_longlong_t)id);
2783 2702 break;
2784 2703 }
2785 2704
2786 2705 /* print out permission mask */
2787 2706 if (access_mask & ACE_READ_DATA)
2788 2707 mdb_printf("r");
2789 2708 else
2790 2709 mdb_printf("-");
2791 2710 if (access_mask & ACE_WRITE_DATA)
2792 2711 mdb_printf("w");
2793 2712 else
2794 2713 mdb_printf("-");
2795 2714 if (access_mask & ACE_EXECUTE)
2796 2715 mdb_printf("x");
2797 2716 else
2798 2717 mdb_printf("-");
2799 2718 if (access_mask & ACE_APPEND_DATA)
2800 2719 mdb_printf("p");
2801 2720 else
2802 2721 mdb_printf("-");
2803 2722 if (access_mask & ACE_DELETE)
2804 2723 mdb_printf("d");
2805 2724 else
2806 2725 mdb_printf("-");
2807 2726 if (access_mask & ACE_DELETE_CHILD)
2808 2727 mdb_printf("D");
2809 2728 else
2810 2729 mdb_printf("-");
2811 2730 if (access_mask & ACE_READ_ATTRIBUTES)
2812 2731 mdb_printf("a");
2813 2732 else
2814 2733 mdb_printf("-");
2815 2734 if (access_mask & ACE_WRITE_ATTRIBUTES)
2816 2735 mdb_printf("A");
2817 2736 else
2818 2737 mdb_printf("-");
2819 2738 if (access_mask & ACE_READ_NAMED_ATTRS)
2820 2739 mdb_printf("R");
2821 2740 else
2822 2741 mdb_printf("-");
2823 2742 if (access_mask & ACE_WRITE_NAMED_ATTRS)
2824 2743 mdb_printf("W");
2825 2744 else
2826 2745 mdb_printf("-");
2827 2746 if (access_mask & ACE_READ_ACL)
2828 2747 mdb_printf("c");
2829 2748 else
2830 2749 mdb_printf("-");
2831 2750 if (access_mask & ACE_WRITE_ACL)
2832 2751 mdb_printf("C");
2833 2752 else
2834 2753 mdb_printf("-");
2835 2754 if (access_mask & ACE_WRITE_OWNER)
2836 2755 mdb_printf("o");
2837 2756 else
2838 2757 mdb_printf("-");
2839 2758 if (access_mask & ACE_SYNCHRONIZE)
2840 2759 mdb_printf("s");
2841 2760 else
2842 2761 mdb_printf("-");
2843 2762
2844 2763 mdb_printf(":");
2845 2764
2846 2765 /* Print out inheritance flags */
2847 2766 if (ace_flags & ACE_FILE_INHERIT_ACE)
2848 2767 mdb_printf("f");
2849 2768 else
2850 2769 mdb_printf("-");
2851 2770 if (ace_flags & ACE_DIRECTORY_INHERIT_ACE)
2852 2771 mdb_printf("d");
2853 2772 else
2854 2773 mdb_printf("-");
2855 2774 if (ace_flags & ACE_INHERIT_ONLY_ACE)
2856 2775 mdb_printf("i");
2857 2776 else
2858 2777 mdb_printf("-");
2859 2778 if (ace_flags & ACE_NO_PROPAGATE_INHERIT_ACE)
2860 2779 mdb_printf("n");
2861 2780 else
2862 2781 mdb_printf("-");
2863 2782 if (ace_flags & ACE_SUCCESSFUL_ACCESS_ACE_FLAG)
2864 2783 mdb_printf("S");
2865 2784 else
2866 2785 mdb_printf("-");
2867 2786 if (ace_flags & ACE_FAILED_ACCESS_ACE_FLAG)
2868 2787 mdb_printf("F");
2869 2788 else
2870 2789 mdb_printf("-");
2871 2790 if (ace_flags & ACE_INHERITED_ACE)
2872 2791 mdb_printf("I");
2873 2792 else
2874 2793 mdb_printf("-");
2875 2794
2876 2795 switch (ace_type) {
2877 2796 case ACE_ACCESS_ALLOWED_ACE_TYPE:
2878 2797 mdb_printf(":allow\n");
2879 2798 break;
2880 2799 case ACE_ACCESS_DENIED_ACE_TYPE:
2881 2800 mdb_printf(":deny\n");
2882 2801 break;
2883 2802 case ACE_SYSTEM_AUDIT_ACE_TYPE:
2884 2803 mdb_printf(":audit\n");
2885 2804 break;
2886 2805 case ACE_SYSTEM_ALARM_ACE_TYPE:
2887 2806 mdb_printf(":alarm\n");
2888 2807 break;
2889 2808 default:
2890 2809 mdb_printf(":?\n");
2891 2810 }
2892 2811 return (DCMD_OK);
2893 2812 }
2894 2813
2895 2814 /* ARGSUSED */
2896 2815 static int
2897 2816 zfs_ace_print(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
2898 2817 {
2899 2818 zfs_ace_t zace;
2900 2819 int verbose = FALSE;
2901 2820 uint64_t id;
2902 2821
2903 2822 if (!(flags & DCMD_ADDRSPEC))
2904 2823 return (DCMD_USAGE);
2905 2824
2906 2825 if (mdb_getopts(argc, argv,
2907 2826 'v', MDB_OPT_SETBITS, TRUE, &verbose, TRUE, NULL) != argc)
2908 2827 return (DCMD_USAGE);
2909 2828
2910 2829 if (mdb_vread(&zace, sizeof (zfs_ace_t), addr) == -1) {
2911 2830 mdb_warn("failed to read zfs_ace_t");
2912 2831 return (DCMD_ERR);
2913 2832 }
2914 2833
2915 2834 if ((zace.z_hdr.z_flags & ACE_TYPE_FLAGS) == 0 ||
2916 2835 (zace.z_hdr.z_flags & ACE_TYPE_FLAGS) == ACE_IDENTIFIER_GROUP)
2917 2836 id = zace.z_fuid;
2918 2837 else
2919 2838 id = -1;
2920 2839
2921 2840 return (zfs_ace_print_common(addr, flags, id, zace.z_hdr.z_access_mask,
2922 2841 zace.z_hdr.z_flags, zace.z_hdr.z_type, verbose));
2923 2842 }
2924 2843
2925 2844 /* ARGSUSED */
2926 2845 static int
2927 2846 zfs_ace0_print(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
2928 2847 {
2929 2848 ace_t ace;
2930 2849 uint64_t id;
2931 2850 int verbose = FALSE;
2932 2851
2933 2852 if (!(flags & DCMD_ADDRSPEC))
2934 2853 return (DCMD_USAGE);
2935 2854
2936 2855 if (mdb_getopts(argc, argv,
2937 2856 'v', MDB_OPT_SETBITS, TRUE, &verbose, TRUE, NULL) != argc)
2938 2857 return (DCMD_USAGE);
2939 2858
2940 2859 if (mdb_vread(&ace, sizeof (ace_t), addr) == -1) {
2941 2860 mdb_warn("failed to read ace_t");
2942 2861 return (DCMD_ERR);
2943 2862 }
2944 2863
2945 2864 if ((ace.a_flags & ACE_TYPE_FLAGS) == 0 ||
2946 2865 (ace.a_flags & ACE_TYPE_FLAGS) == ACE_IDENTIFIER_GROUP)
2947 2866 id = ace.a_who;
2948 2867 else
2949 2868 id = -1;
2950 2869
2951 2870 return (zfs_ace_print_common(addr, flags, id, ace.a_access_mask,
2952 2871 ace.a_flags, ace.a_type, verbose));
2953 2872 }
2954 2873
2955 2874 typedef struct acl_dump_args {
2956 2875 int a_argc;
2957 2876 const mdb_arg_t *a_argv;
2958 2877 uint16_t a_version;
2959 2878 int a_flags;
2960 2879 } acl_dump_args_t;
2961 2880
2962 2881 /* ARGSUSED */
2963 2882 static int
2964 2883 acl_aces_cb(uintptr_t addr, const void *unknown, void *arg)
2965 2884 {
2966 2885 acl_dump_args_t *acl_args = (acl_dump_args_t *)arg;
2967 2886
2968 2887 if (acl_args->a_version == 1) {
2969 2888 if (mdb_call_dcmd("zfs_ace", addr,
2970 2889 DCMD_ADDRSPEC|acl_args->a_flags, acl_args->a_argc,
2971 2890 acl_args->a_argv) != DCMD_OK) {
2972 2891 return (WALK_ERR);
2973 2892 }
2974 2893 } else {
2975 2894 if (mdb_call_dcmd("zfs_ace0", addr,
2976 2895 DCMD_ADDRSPEC|acl_args->a_flags, acl_args->a_argc,
2977 2896 acl_args->a_argv) != DCMD_OK) {
2978 2897 return (WALK_ERR);
2979 2898 }
2980 2899 }
2981 2900 acl_args->a_flags = DCMD_LOOP;
2982 2901 return (WALK_NEXT);
2983 2902 }
2984 2903
2985 2904 /* ARGSUSED */
2986 2905 static int
2987 2906 acl_cb(uintptr_t addr, const void *unknown, void *arg)
2988 2907 {
2989 2908 acl_dump_args_t *acl_args = (acl_dump_args_t *)arg;
2990 2909
2991 2910 if (acl_args->a_version == 1) {
2992 2911 if (mdb_pwalk("zfs_acl_node_aces", acl_aces_cb,
2993 2912 arg, addr) != 0) {
2994 2913 mdb_warn("can't walk ACEs");
2995 2914 return (DCMD_ERR);
2996 2915 }
2997 2916 } else {
2998 2917 if (mdb_pwalk("zfs_acl_node_aces0", acl_aces_cb,
2999 2918 arg, addr) != 0) {
3000 2919 mdb_warn("can't walk ACEs");
3001 2920 return (DCMD_ERR);
3002 2921 }
3003 2922 }
3004 2923 return (WALK_NEXT);
3005 2924 }
3006 2925
3007 2926 /* ARGSUSED */
3008 2927 static int
3009 2928 zfs_acl_dump(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
3010 2929 {
3011 2930 zfs_acl_t zacl;
3012 2931 int verbose = FALSE;
3013 2932 acl_dump_args_t acl_args;
3014 2933
3015 2934 if (!(flags & DCMD_ADDRSPEC))
3016 2935 return (DCMD_USAGE);
3017 2936
3018 2937 if (mdb_getopts(argc, argv,
3019 2938 'v', MDB_OPT_SETBITS, TRUE, &verbose, TRUE, NULL) != argc)
3020 2939 return (DCMD_USAGE);
3021 2940
3022 2941 if (mdb_vread(&zacl, sizeof (zfs_acl_t), addr) == -1) {
3023 2942 mdb_warn("failed to read zfs_acl_t");
3024 2943 return (DCMD_ERR);
3025 2944 }
3026 2945
3027 2946 acl_args.a_argc = argc;
3028 2947 acl_args.a_argv = argv;
3029 2948 acl_args.a_version = zacl.z_version;
3030 2949 acl_args.a_flags = DCMD_LOOPFIRST;
3031 2950
3032 2951 if (mdb_pwalk("zfs_acl_node", acl_cb, &acl_args, addr) != 0) {
3033 2952 mdb_warn("can't walk ACL");
3034 2953 return (DCMD_ERR);
3035 2954 }
3036 2955
3037 2956 return (DCMD_OK);
3038 2957 }
3039 2958
3040 2959 /* ARGSUSED */
3041 2960 static int
3042 2961 zfs_acl_node_walk_init(mdb_walk_state_t *wsp)
3043 2962 {
3044 2963 if (wsp->walk_addr == NULL) {
3045 2964 mdb_warn("must supply address of zfs_acl_node_t\n");
3046 2965 return (WALK_ERR);
3047 2966 }
3048 2967
3049 2968 wsp->walk_addr +=
3050 2969 mdb_ctf_offsetof_by_name(ZFS_STRUCT "zfs_acl", "z_acl");
3051 2970
3052 2971 if (mdb_layered_walk("list", wsp) == -1) {
3053 2972 mdb_warn("failed to walk 'list'\n");
3054 2973 return (WALK_ERR);
3055 2974 }
3056 2975
3057 2976 return (WALK_NEXT);
3058 2977 }
3059 2978
3060 2979 static int
3061 2980 zfs_acl_node_walk_step(mdb_walk_state_t *wsp)
3062 2981 {
3063 2982 zfs_acl_node_t aclnode;
3064 2983
3065 2984 if (mdb_vread(&aclnode, sizeof (zfs_acl_node_t),
3066 2985 wsp->walk_addr) == -1) {
3067 2986 mdb_warn("failed to read zfs_acl_node at %p", wsp->walk_addr);
3068 2987 return (WALK_ERR);
3069 2988 }
3070 2989
3071 2990 return (wsp->walk_callback(wsp->walk_addr, &aclnode, wsp->walk_cbdata));
3072 2991 }
3073 2992
3074 2993 typedef struct ace_walk_data {
3075 2994 int ace_count;
3076 2995 int ace_version;
3077 2996 } ace_walk_data_t;
3078 2997
3079 2998 static int
3080 2999 zfs_aces_walk_init_common(mdb_walk_state_t *wsp, int version,
3081 3000 int ace_count, uintptr_t ace_data)
3082 3001 {
3083 3002 ace_walk_data_t *ace_walk_data;
3084 3003
3085 3004 if (wsp->walk_addr == NULL) {
3086 3005 mdb_warn("must supply address of zfs_acl_node_t\n");
3087 3006 return (WALK_ERR);
3088 3007 }
3089 3008
3090 3009 ace_walk_data = mdb_alloc(sizeof (ace_walk_data_t), UM_SLEEP | UM_GC);
3091 3010
3092 3011 ace_walk_data->ace_count = ace_count;
3093 3012 ace_walk_data->ace_version = version;
3094 3013
3095 3014 wsp->walk_addr = ace_data;
3096 3015 wsp->walk_data = ace_walk_data;
3097 3016
3098 3017 return (WALK_NEXT);
3099 3018 }
3100 3019
3101 3020 static int
3102 3021 zfs_acl_node_aces_walk_init_common(mdb_walk_state_t *wsp, int version)
3103 3022 {
3104 3023 static int gotid;
3105 3024 static mdb_ctf_id_t acl_id;
3106 3025 int z_ace_count;
3107 3026 uintptr_t z_acldata;
3108 3027
3109 3028 if (!gotid) {
3110 3029 if (mdb_ctf_lookup_by_name("struct zfs_acl_node",
3111 3030 &acl_id) == -1) {
3112 3031 mdb_warn("couldn't find struct zfs_acl_node");
3113 3032 return (DCMD_ERR);
3114 3033 }
3115 3034 gotid = TRUE;
3116 3035 }
3117 3036
3118 3037 if (GETMEMBID(wsp->walk_addr, &acl_id, z_ace_count, z_ace_count)) {
3119 3038 return (DCMD_ERR);
3120 3039 }
3121 3040 if (GETMEMBID(wsp->walk_addr, &acl_id, z_acldata, z_acldata)) {
3122 3041 return (DCMD_ERR);
3123 3042 }
3124 3043
3125 3044 return (zfs_aces_walk_init_common(wsp, version,
3126 3045 z_ace_count, z_acldata));
3127 3046 }
3128 3047
3129 3048 /* ARGSUSED */
3130 3049 static int
3131 3050 zfs_acl_node_aces_walk_init(mdb_walk_state_t *wsp)
3132 3051 {
3133 3052 return (zfs_acl_node_aces_walk_init_common(wsp, 1));
3134 3053 }
3135 3054
3136 3055 /* ARGSUSED */
3137 3056 static int
3138 3057 zfs_acl_node_aces0_walk_init(mdb_walk_state_t *wsp)
3139 3058 {
3140 3059 return (zfs_acl_node_aces_walk_init_common(wsp, 0));
3141 3060 }
3142 3061
3143 3062 static int
3144 3063 zfs_aces_walk_step(mdb_walk_state_t *wsp)
3145 3064 {
3146 3065 ace_walk_data_t *ace_data = wsp->walk_data;
3147 3066 zfs_ace_t zace;
3148 3067 ace_t *acep;
3149 3068 int status;
3150 3069 int entry_type;
3151 3070 int allow_type;
3152 3071 uintptr_t ptr;
3153 3072
3154 3073 if (ace_data->ace_count == 0)
3155 3074 return (WALK_DONE);
3156 3075
3157 3076 if (mdb_vread(&zace, sizeof (zfs_ace_t), wsp->walk_addr) == -1) {
3158 3077 mdb_warn("failed to read zfs_ace_t at %#lx",
3159 3078 wsp->walk_addr);
3160 3079 return (WALK_ERR);
3161 3080 }
3162 3081
3163 3082 switch (ace_data->ace_version) {
3164 3083 case 0:
3165 3084 acep = (ace_t *)&zace;
3166 3085 entry_type = acep->a_flags & ACE_TYPE_FLAGS;
3167 3086 allow_type = acep->a_type;
3168 3087 break;
3169 3088 case 1:
3170 3089 entry_type = zace.z_hdr.z_flags & ACE_TYPE_FLAGS;
3171 3090 allow_type = zace.z_hdr.z_type;
3172 3091 break;
3173 3092 default:
3174 3093 return (WALK_ERR);
3175 3094 }
3176 3095
3177 3096 ptr = (uintptr_t)wsp->walk_addr;
3178 3097 switch (entry_type) {
3179 3098 case ACE_OWNER:
3180 3099 case ACE_EVERYONE:
3181 3100 case (ACE_IDENTIFIER_GROUP | ACE_GROUP):
3182 3101 ptr += ace_data->ace_version == 0 ?
3183 3102 sizeof (ace_t) : sizeof (zfs_ace_hdr_t);
3184 3103 break;
3185 3104 case ACE_IDENTIFIER_GROUP:
3186 3105 default:
3187 3106 switch (allow_type) {
3188 3107 case ACE_ACCESS_ALLOWED_OBJECT_ACE_TYPE:
3189 3108 case ACE_ACCESS_DENIED_OBJECT_ACE_TYPE:
3190 3109 case ACE_SYSTEM_AUDIT_OBJECT_ACE_TYPE:
3191 3110 case ACE_SYSTEM_ALARM_OBJECT_ACE_TYPE:
3192 3111 ptr += ace_data->ace_version == 0 ?
3193 3112 sizeof (ace_t) : sizeof (zfs_object_ace_t);
3194 3113 break;
3195 3114 default:
3196 3115 ptr += ace_data->ace_version == 0 ?
3197 3116 sizeof (ace_t) : sizeof (zfs_ace_t);
3198 3117 break;
3199 3118 }
3200 3119 }
3201 3120
3202 3121 ace_data->ace_count--;
3203 3122 status = wsp->walk_callback(wsp->walk_addr,
3204 3123 (void *)(uintptr_t)&zace, wsp->walk_cbdata);
3205 3124
3206 3125 wsp->walk_addr = ptr;
3207 3126 return (status);
3208 3127 }
3209 3128
3210 3129 typedef struct mdb_zfs_rrwlock {
3211 3130 uintptr_t rr_writer;
3212 3131 boolean_t rr_writer_wanted;
3213 3132 } mdb_zfs_rrwlock_t;
3214 3133
3215 3134 static uint_t rrw_key;
3216 3135
3217 3136 /* ARGSUSED */
3218 3137 static int
3219 3138 rrwlock(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
3220 3139 {
3221 3140 mdb_zfs_rrwlock_t rrw;
3222 3141
3223 3142 if (rrw_key == 0) {
3224 3143 if (mdb_ctf_readsym(&rrw_key, "uint_t", "rrw_tsd_key", 0) == -1)
3225 3144 return (DCMD_ERR);
3226 3145 }
3227 3146
3228 3147 if (mdb_ctf_vread(&rrw, "rrwlock_t", "mdb_zfs_rrwlock_t", addr,
3229 3148 0) == -1)
3230 3149 return (DCMD_ERR);
3231 3150
3232 3151 if (rrw.rr_writer != 0) {
3233 3152 mdb_printf("write lock held by thread %lx\n", rrw.rr_writer);
3234 3153 return (DCMD_OK);
3235 3154 }
3236 3155
3237 3156 if (rrw.rr_writer_wanted) {
3238 3157 mdb_printf("writer wanted\n");
3239 3158 }
3240 3159
3241 3160 mdb_printf("anonymous references:\n");
3242 3161 (void) mdb_call_dcmd("refcount", addr +
3243 3162 mdb_ctf_offsetof_by_name(ZFS_STRUCT "rrwlock", "rr_anon_rcount"),
3244 3163 DCMD_ADDRSPEC, 0, NULL);
3245 3164
3246 3165 mdb_printf("linked references:\n");
3247 3166 (void) mdb_call_dcmd("refcount", addr +
3248 3167 mdb_ctf_offsetof_by_name(ZFS_STRUCT "rrwlock", "rr_linked_rcount"),
3249 3168 DCMD_ADDRSPEC, 0, NULL);
3250 3169
3251 3170 /*
3252 3171 * XXX This should find references from
3253 3172 * "::walk thread | ::tsd -v <rrw_key>", but there is no support
3254 3173 * for programmatic consumption of dcmds, so this would be
3255 3174 * difficult, potentially requiring reimplementing ::tsd (both
3256 3175 * user and kernel versions) in this MDB module.
3257 3176 */
3258 3177
3259 3178 return (DCMD_OK);
3260 3179 }
3261 3180
3262 3181 /*
|
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3263 3182 * MDB module linkage information:
3264 3183 *
3265 3184 * We declare a list of structures describing our dcmds, and a function
3266 3185 * named _mdb_init to return a pointer to our module information.
3267 3186 */
3268 3187
3269 3188 static const mdb_dcmd_t dcmds[] = {
3270 3189 { "arc", "[-bkmg]", "print ARC variables", arc_print },
3271 3190 { "blkptr", ":", "print blkptr_t", blkptr },
3272 3191 { "dbuf", ":", "print dmu_buf_impl_t", dbuf },
3273 - { "dbuf_stats", ":", "dbuf stats", dbuf_stats },
3274 3192 { "dbufs",
3275 3193 "\t[-O objset_t*] [-n objset_name | \"mos\"] "
3276 3194 "[-o object | \"mdn\"] \n"
3277 3195 "\t[-l level] [-b blkid | \"bonus\"]",
3278 3196 "find dmu_buf_impl_t's that match specified criteria", dbufs },
3279 3197 { "abuf_find", "dva_word[0] dva_word[1]",
3280 3198 "find arc_buf_hdr_t of a specified DVA",
3281 3199 abuf_find },
3282 3200 { "spa", "?[-cevmMh]\n"
3283 3201 "\t-c display spa config\n"
3284 3202 "\t-e display vdev statistics\n"
3285 3203 "\t-v display vdev information\n"
3286 3204 "\t-m display metaslab statistics\n"
3287 3205 "\t-M display metaslab group statistics\n"
3288 3206 "\t-h display histogram (requires -m or -M)\n",
3289 3207 "spa_t summary", spa_print },
3290 3208 { "spa_config", ":", "print spa_t configuration", spa_print_config },
3291 3209 { "spa_space", ":[-b]", "print spa_t on-disk space usage", spa_space },
3292 3210 { "spa_vdevs", ":[-emMh]\n"
3293 3211 "\t-e display vdev statistics\n"
3294 3212 "\t-m dispaly metaslab statistics\n"
3295 3213 "\t-M display metaslab group statistic\n"
3296 3214 "\t-h display histogram (requires -m or -M)\n",
3297 3215 "given a spa_t, print vdev summary", spa_vdevs },
3298 3216 { "vdev", ":[-re]\n"
3299 3217 "\t-r display recursively\n"
3300 3218 "\t-e display statistics\n"
3301 3219 "\t-m display metaslab statistics\n"
3302 3220 "\t-M display metaslab group statistics\n"
3303 3221 "\t-h display histogram (requires -m or -M)\n",
3304 3222 "vdev_t summary", vdev_print },
3305 3223 { "zio", ":[-cpr]\n"
3306 3224 "\t-c display children\n"
3307 3225 "\t-p display parents\n"
3308 3226 "\t-r display recursively",
3309 3227 "zio_t summary", zio_print },
3310 3228 { "zio_state", "?", "print out all zio_t structures on system or "
3311 3229 "for a particular pool", zio_state },
3312 3230 { "zfs_blkstats", ":[-v]",
3313 3231 "given a spa_t, print block type stats from last scrub",
3314 3232 zfs_blkstats },
3315 3233 { "zfs_params", "", "print zfs tunable parameters", zfs_params },
3316 3234 { "refcount", ":[-r]\n"
3317 3235 "\t-r display recently removed references",
3318 3236 "print refcount_t holders", refcount },
3319 3237 { "zap_leaf", "", "print zap_leaf_phys_t", zap_leaf },
3320 3238 { "zfs_aces", ":[-v]", "print all ACEs from a zfs_acl_t",
3321 3239 zfs_acl_dump },
3322 3240 { "zfs_ace", ":[-v]", "print zfs_ace", zfs_ace_print },
3323 3241 { "zfs_ace0", ":[-v]", "print zfs_ace0", zfs_ace0_print },
3324 3242 { "sa_attr_table", ":", "print SA attribute table from sa_os_t",
3325 3243 sa_attr_table},
3326 3244 { "sa_attr", ": attr_id",
3327 3245 "print SA attribute address when given sa_handle_t", sa_attr_print},
3328 3246 { "zfs_dbgmsg", ":[-va]",
3329 3247 "print zfs debug log", dbgmsg},
3330 3248 { "rrwlock", ":",
3331 3249 "print rrwlock_t, including readers", rrwlock},
3332 3250 { NULL }
3333 3251 };
3334 3252
3335 3253 static const mdb_walker_t walkers[] = {
3336 3254 { "zms_freelist", "walk ZFS metaslab freelist",
3337 3255 freelist_walk_init, freelist_walk_step, NULL },
3338 3256 { "txg_list", "given any txg_list_t *, walk all entries in all txgs",
3339 3257 txg_list_walk_init, txg_list_walk_step, NULL },
3340 3258 { "txg_list0", "given any txg_list_t *, walk all entries in txg 0",
3341 3259 txg_list0_walk_init, txg_list_walk_step, NULL },
3342 3260 { "txg_list1", "given any txg_list_t *, walk all entries in txg 1",
3343 3261 txg_list1_walk_init, txg_list_walk_step, NULL },
3344 3262 { "txg_list2", "given any txg_list_t *, walk all entries in txg 2",
3345 3263 txg_list2_walk_init, txg_list_walk_step, NULL },
3346 3264 { "txg_list3", "given any txg_list_t *, walk all entries in txg 3",
3347 3265 txg_list3_walk_init, txg_list_walk_step, NULL },
3348 3266 { "zio", "walk all zio structures, optionally for a particular spa_t",
3349 3267 zio_walk_init, zio_walk_step, NULL },
3350 3268 { "zio_root",
3351 3269 "walk all root zio_t structures, optionally for a particular spa_t",
3352 3270 zio_walk_init, zio_walk_root_step, NULL },
3353 3271 { "spa", "walk all spa_t entries in the namespace",
3354 3272 spa_walk_init, spa_walk_step, NULL },
3355 3273 { "metaslab", "given a spa_t *, walk all metaslab_t structures",
3356 3274 metaslab_walk_init, metaslab_walk_step, NULL },
3357 3275 { "zfs_acl_node", "given a zfs_acl_t, walk all zfs_acl_nodes",
3358 3276 zfs_acl_node_walk_init, zfs_acl_node_walk_step, NULL },
3359 3277 { "zfs_acl_node_aces", "given a zfs_acl_node_t, walk all ACEs",
3360 3278 zfs_acl_node_aces_walk_init, zfs_aces_walk_step, NULL },
3361 3279 { "zfs_acl_node_aces0",
3362 3280 "given a zfs_acl_node_t, walk all ACEs as ace_t",
3363 3281 zfs_acl_node_aces0_walk_init, zfs_aces_walk_step, NULL },
3364 3282 { NULL }
3365 3283 };
3366 3284
3367 3285 static const mdb_modinfo_t modinfo = {
3368 3286 MDB_API_VERSION, dcmds, walkers
3369 3287 };
3370 3288
3371 3289 const mdb_modinfo_t *
3372 3290 _mdb_init(void)
3373 3291 {
3374 3292 return (&modinfo);
3375 3293 }
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