1 #include <linux/ceph/ceph_debug.h> 2 3 #include <linux/device.h> 4 #include <linux/slab.h> 5 #include <linux/module.h> 6 #include <linux/ctype.h> 7 #include <linux/debugfs.h> 8 #include <linux/seq_file.h> 9 10 #include <linux/ceph/libceph.h> 11 #include <linux/ceph/mon_client.h> 12 #include <linux/ceph/auth.h> 13 #include <linux/ceph/debugfs.h> 14 15 #ifdef CONFIG_DEBUG_FS 16 17 /* 18 * Implement /sys/kernel/debug/ceph fun 19 * 20 * /sys/kernel/debug/ceph/client* - an instance of the ceph client 21 * .../osdmap - current osdmap 22 * .../monmap - current monmap 23 * .../osdc - active osd requests 24 * .../monc - mon client state 25 * .../client_options - libceph-only (i.e. not rbd or cephfs) options 26 * .../dentry_lru - dump contents of dentry lru 27 * .../caps - expose cap (reservation) stats 28 * .../bdi - symlink to ../../bdi/something 29 */ 30 31 static struct dentry *ceph_debugfs_dir; 32 33 static int monmap_show(struct seq_file *s, void *p) 34 { 35 int i; 36 struct ceph_client *client = s->private; 37 38 if (client->monc.monmap == NULL) 39 return 0; 40 41 seq_printf(s, "epoch %d\n", client->monc.monmap->epoch); 42 for (i = 0; i < client->monc.monmap->num_mon; i++) { 43 struct ceph_entity_inst *inst = 44 &client->monc.monmap->mon_inst[i]; 45 46 seq_printf(s, "\t%s%lld\t%s\n", 47 ENTITY_NAME(inst->name), 48 ceph_pr_addr(&inst->addr.in_addr)); 49 } 50 return 0; 51 } 52 53 static int osdmap_show(struct seq_file *s, void *p) 54 { 55 int i; 56 struct ceph_client *client = s->private; 57 struct ceph_osd_client *osdc = &client->osdc; 58 struct ceph_osdmap *map = osdc->osdmap; 59 struct rb_node *n; 60 61 if (map == NULL) 62 return 0; 63 64 down_read(&osdc->lock); 65 seq_printf(s, "epoch %u barrier %u flags 0x%x\n", map->epoch, 66 osdc->epoch_barrier, map->flags); 67 68 for (n = rb_first(&map->pg_pools); n; n = rb_next(n)) { 69 struct ceph_pg_pool_info *pi = 70 rb_entry(n, struct ceph_pg_pool_info, node); 71 72 seq_printf(s, "pool %lld '%s' type %d size %d min_size %d pg_num %u pg_num_mask %d flags 0x%llx lfor %u read_tier %lld write_tier %lld\n", 73 pi->id, pi->name, pi->type, pi->size, pi->min_size, 74 pi->pg_num, pi->pg_num_mask, pi->flags, 75 pi->last_force_request_resend, pi->read_tier, 76 pi->write_tier); 77 } 78 for (i = 0; i < map->max_osd; i++) { 79 struct ceph_entity_addr *addr = &map->osd_addr[i]; 80 u32 state = map->osd_state[i]; 81 char sb[64]; 82 83 seq_printf(s, "osd%d\t%s\t%3d%%\t(%s)\t%3d%%\n", 84 i, ceph_pr_addr(&addr->in_addr), 85 ((map->osd_weight[i]*100) >> 16), 86 ceph_osdmap_state_str(sb, sizeof(sb), state), 87 ((ceph_get_primary_affinity(map, i)*100) >> 16)); 88 } 89 for (n = rb_first(&map->pg_temp); n; n = rb_next(n)) { 90 struct ceph_pg_mapping *pg = 91 rb_entry(n, struct ceph_pg_mapping, node); 92 93 seq_printf(s, "pg_temp %llu.%x [", pg->pgid.pool, 94 pg->pgid.seed); 95 for (i = 0; i < pg->pg_temp.len; i++) 96 seq_printf(s, "%s%d", (i == 0 ? "" : ","), 97 pg->pg_temp.osds[i]); 98 seq_printf(s, "]\n"); 99 } 100 for (n = rb_first(&map->primary_temp); n; n = rb_next(n)) { 101 struct ceph_pg_mapping *pg = 102 rb_entry(n, struct ceph_pg_mapping, node); 103 104 seq_printf(s, "primary_temp %llu.%x %d\n", pg->pgid.pool, 105 pg->pgid.seed, pg->primary_temp.osd); 106 } 107 for (n = rb_first(&map->pg_upmap); n; n = rb_next(n)) { 108 struct ceph_pg_mapping *pg = 109 rb_entry(n, struct ceph_pg_mapping, node); 110 111 seq_printf(s, "pg_upmap %llu.%x [", pg->pgid.pool, 112 pg->pgid.seed); 113 for (i = 0; i < pg->pg_upmap.len; i++) 114 seq_printf(s, "%s%d", (i == 0 ? "" : ","), 115 pg->pg_upmap.osds[i]); 116 seq_printf(s, "]\n"); 117 } 118 for (n = rb_first(&map->pg_upmap_items); n; n = rb_next(n)) { 119 struct ceph_pg_mapping *pg = 120 rb_entry(n, struct ceph_pg_mapping, node); 121 122 seq_printf(s, "pg_upmap_items %llu.%x [", pg->pgid.pool, 123 pg->pgid.seed); 124 for (i = 0; i < pg->pg_upmap_items.len; i++) 125 seq_printf(s, "%s%d->%d", (i == 0 ? "" : ","), 126 pg->pg_upmap_items.from_to[i][0], 127 pg->pg_upmap_items.from_to[i][1]); 128 seq_printf(s, "]\n"); 129 } 130 131 up_read(&osdc->lock); 132 return 0; 133 } 134 135 static int monc_show(struct seq_file *s, void *p) 136 { 137 struct ceph_client *client = s->private; 138 struct ceph_mon_generic_request *req; 139 struct ceph_mon_client *monc = &client->monc; 140 struct rb_node *rp; 141 int i; 142 143 mutex_lock(&monc->mutex); 144 145 for (i = 0; i < ARRAY_SIZE(monc->subs); i++) { 146 seq_printf(s, "have %s %u", ceph_sub_str[i], 147 monc->subs[i].have); 148 if (monc->subs[i].want) 149 seq_printf(s, " want %llu%s", 150 le64_to_cpu(monc->subs[i].item.start), 151 (monc->subs[i].item.flags & 152 CEPH_SUBSCRIBE_ONETIME ? "" : "+")); 153 seq_putc(s, '\n'); 154 } 155 seq_printf(s, "fs_cluster_id %d\n", monc->fs_cluster_id); 156 157 for (rp = rb_first(&monc->generic_request_tree); rp; rp = rb_next(rp)) { 158 __u16 op; 159 req = rb_entry(rp, struct ceph_mon_generic_request, node); 160 op = le16_to_cpu(req->request->hdr.type); 161 if (op == CEPH_MSG_STATFS) 162 seq_printf(s, "%llu statfs\n", req->tid); 163 else if (op == CEPH_MSG_MON_GET_VERSION) 164 seq_printf(s, "%llu mon_get_version", req->tid); 165 else 166 seq_printf(s, "%llu unknown\n", req->tid); 167 } 168 169 mutex_unlock(&monc->mutex); 170 return 0; 171 } 172 173 static void dump_spgid(struct seq_file *s, const struct ceph_spg *spgid) 174 { 175 seq_printf(s, "%llu.%x", spgid->pgid.pool, spgid->pgid.seed); 176 if (spgid->shard != CEPH_SPG_NOSHARD) 177 seq_printf(s, "s%d", spgid->shard); 178 } 179 180 static void dump_target(struct seq_file *s, struct ceph_osd_request_target *t) 181 { 182 int i; 183 184 seq_printf(s, "osd%d\t%llu.%x\t", t->osd, t->pgid.pool, t->pgid.seed); 185 dump_spgid(s, &t->spgid); 186 seq_puts(s, "\t["); 187 for (i = 0; i < t->up.size; i++) 188 seq_printf(s, "%s%d", (!i ? "" : ","), t->up.osds[i]); 189 seq_printf(s, "]/%d\t[", t->up.primary); 190 for (i = 0; i < t->acting.size; i++) 191 seq_printf(s, "%s%d", (!i ? "" : ","), t->acting.osds[i]); 192 seq_printf(s, "]/%d\te%u\t", t->acting.primary, t->epoch); 193 if (t->target_oloc.pool_ns) { 194 seq_printf(s, "%*pE/%*pE\t0x%x", 195 (int)t->target_oloc.pool_ns->len, 196 t->target_oloc.pool_ns->str, 197 t->target_oid.name_len, t->target_oid.name, t->flags); 198 } else { 199 seq_printf(s, "%*pE\t0x%x", t->target_oid.name_len, 200 t->target_oid.name, t->flags); 201 } 202 if (t->paused) 203 seq_puts(s, "\tP"); 204 } 205 206 static void dump_request(struct seq_file *s, struct ceph_osd_request *req) 207 { 208 int i; 209 210 seq_printf(s, "%llu\t", req->r_tid); 211 dump_target(s, &req->r_t); 212 213 seq_printf(s, "\t%d", req->r_attempts); 214 215 for (i = 0; i < req->r_num_ops; i++) { 216 struct ceph_osd_req_op *op = &req->r_ops[i]; 217 218 seq_printf(s, "%s%s", (i == 0 ? "\t" : ","), 219 ceph_osd_op_name(op->op)); 220 if (op->op == CEPH_OSD_OP_WATCH) 221 seq_printf(s, "-%s", 222 ceph_osd_watch_op_name(op->watch.op)); 223 } 224 225 seq_putc(s, '\n'); 226 } 227 228 static void dump_requests(struct seq_file *s, struct ceph_osd *osd) 229 { 230 struct rb_node *n; 231 232 mutex_lock(&osd->lock); 233 for (n = rb_first(&osd->o_requests); n; n = rb_next(n)) { 234 struct ceph_osd_request *req = 235 rb_entry(n, struct ceph_osd_request, r_node); 236 237 dump_request(s, req); 238 } 239 240 mutex_unlock(&osd->lock); 241 } 242 243 static void dump_linger_request(struct seq_file *s, 244 struct ceph_osd_linger_request *lreq) 245 { 246 seq_printf(s, "%llu\t", lreq->linger_id); 247 dump_target(s, &lreq->t); 248 249 seq_printf(s, "\t%u\t%s%s/%d\n", lreq->register_gen, 250 lreq->is_watch ? "W" : "N", lreq->committed ? "C" : "", 251 lreq->last_error); 252 } 253 254 static void dump_linger_requests(struct seq_file *s, struct ceph_osd *osd) 255 { 256 struct rb_node *n; 257 258 mutex_lock(&osd->lock); 259 for (n = rb_first(&osd->o_linger_requests); n; n = rb_next(n)) { 260 struct ceph_osd_linger_request *lreq = 261 rb_entry(n, struct ceph_osd_linger_request, node); 262 263 dump_linger_request(s, lreq); 264 } 265 266 mutex_unlock(&osd->lock); 267 } 268 269 static void dump_snapid(struct seq_file *s, u64 snapid) 270 { 271 if (snapid == CEPH_NOSNAP) 272 seq_puts(s, "head"); 273 else if (snapid == CEPH_SNAPDIR) 274 seq_puts(s, "snapdir"); 275 else 276 seq_printf(s, "%llx", snapid); 277 } 278 279 static void dump_name_escaped(struct seq_file *s, unsigned char *name, 280 size_t len) 281 { 282 size_t i; 283 284 for (i = 0; i < len; i++) { 285 if (name[i] == '%' || name[i] == ':' || name[i] == '/' || 286 name[i] < 32 || name[i] >= 127) { 287 seq_printf(s, "%%%02x", name[i]); 288 } else { 289 seq_putc(s, name[i]); 290 } 291 } 292 } 293 294 static void dump_hoid(struct seq_file *s, const struct ceph_hobject_id *hoid) 295 { 296 if (hoid->snapid == 0 && hoid->hash == 0 && !hoid->is_max && 297 hoid->pool == S64_MIN) { 298 seq_puts(s, "MIN"); 299 return; 300 } 301 if (hoid->is_max) { 302 seq_puts(s, "MAX"); 303 return; 304 } 305 seq_printf(s, "%lld:%08x:", hoid->pool, hoid->hash_reverse_bits); 306 dump_name_escaped(s, hoid->nspace, hoid->nspace_len); 307 seq_putc(s, ':'); 308 dump_name_escaped(s, hoid->key, hoid->key_len); 309 seq_putc(s, ':'); 310 dump_name_escaped(s, hoid->oid, hoid->oid_len); 311 seq_putc(s, ':'); 312 dump_snapid(s, hoid->snapid); 313 } 314 315 static void dump_backoffs(struct seq_file *s, struct ceph_osd *osd) 316 { 317 struct rb_node *n; 318 319 mutex_lock(&osd->lock); 320 for (n = rb_first(&osd->o_backoffs_by_id); n; n = rb_next(n)) { 321 struct ceph_osd_backoff *backoff = 322 rb_entry(n, struct ceph_osd_backoff, id_node); 323 324 seq_printf(s, "osd%d\t", osd->o_osd); 325 dump_spgid(s, &backoff->spgid); 326 seq_printf(s, "\t%llu\t", backoff->id); 327 dump_hoid(s, backoff->begin); 328 seq_putc(s, '\t'); 329 dump_hoid(s, backoff->end); 330 seq_putc(s, '\n'); 331 } 332 333 mutex_unlock(&osd->lock); 334 } 335 336 static int osdc_show(struct seq_file *s, void *pp) 337 { 338 struct ceph_client *client = s->private; 339 struct ceph_osd_client *osdc = &client->osdc; 340 struct rb_node *n; 341 342 down_read(&osdc->lock); 343 seq_printf(s, "REQUESTS %d homeless %d\n", 344 atomic_read(&osdc->num_requests), 345 atomic_read(&osdc->num_homeless)); 346 for (n = rb_first(&osdc->osds); n; n = rb_next(n)) { 347 struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); 348 349 dump_requests(s, osd); 350 } 351 dump_requests(s, &osdc->homeless_osd); 352 353 seq_puts(s, "LINGER REQUESTS\n"); 354 for (n = rb_first(&osdc->osds); n; n = rb_next(n)) { 355 struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); 356 357 dump_linger_requests(s, osd); 358 } 359 dump_linger_requests(s, &osdc->homeless_osd); 360 361 seq_puts(s, "BACKOFFS\n"); 362 for (n = rb_first(&osdc->osds); n; n = rb_next(n)) { 363 struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); 364 365 dump_backoffs(s, osd); 366 } 367 368 up_read(&osdc->lock); 369 return 0; 370 } 371 372 static int client_options_show(struct seq_file *s, void *p) 373 { 374 struct ceph_client *client = s->private; 375 int ret; 376 377 ret = ceph_print_client_options(s, client); 378 if (ret) 379 return ret; 380 381 seq_putc(s, '\n'); 382 return 0; 383 } 384 385 CEPH_DEFINE_SHOW_FUNC(monmap_show) 386 CEPH_DEFINE_SHOW_FUNC(osdmap_show) 387 CEPH_DEFINE_SHOW_FUNC(monc_show) 388 CEPH_DEFINE_SHOW_FUNC(osdc_show) 389 CEPH_DEFINE_SHOW_FUNC(client_options_show) 390 391 int ceph_debugfs_init(void) 392 { 393 ceph_debugfs_dir = debugfs_create_dir("ceph", NULL); 394 if (!ceph_debugfs_dir) 395 return -ENOMEM; 396 return 0; 397 } 398 399 void ceph_debugfs_cleanup(void) 400 { 401 debugfs_remove(ceph_debugfs_dir); 402 } 403 404 int ceph_debugfs_client_init(struct ceph_client *client) 405 { 406 int ret = -ENOMEM; 407 char name[80]; 408 409 snprintf(name, sizeof(name), "%pU.client%lld", &client->fsid, 410 client->monc.auth->global_id); 411 412 dout("ceph_debugfs_client_init %p %s\n", client, name); 413 414 BUG_ON(client->debugfs_dir); 415 client->debugfs_dir = debugfs_create_dir(name, ceph_debugfs_dir); 416 if (!client->debugfs_dir) 417 goto out; 418 419 client->monc.debugfs_file = debugfs_create_file("monc", 420 0600, 421 client->debugfs_dir, 422 client, 423 &monc_show_fops); 424 if (!client->monc.debugfs_file) 425 goto out; 426 427 client->osdc.debugfs_file = debugfs_create_file("osdc", 428 0600, 429 client->debugfs_dir, 430 client, 431 &osdc_show_fops); 432 if (!client->osdc.debugfs_file) 433 goto out; 434 435 client->debugfs_monmap = debugfs_create_file("monmap", 436 0600, 437 client->debugfs_dir, 438 client, 439 &monmap_show_fops); 440 if (!client->debugfs_monmap) 441 goto out; 442 443 client->debugfs_osdmap = debugfs_create_file("osdmap", 444 0600, 445 client->debugfs_dir, 446 client, 447 &osdmap_show_fops); 448 if (!client->debugfs_osdmap) 449 goto out; 450 451 client->debugfs_options = debugfs_create_file("client_options", 452 0600, 453 client->debugfs_dir, 454 client, 455 &client_options_show_fops); 456 if (!client->debugfs_options) 457 goto out; 458 459 return 0; 460 461 out: 462 ceph_debugfs_client_cleanup(client); 463 return ret; 464 } 465 466 void ceph_debugfs_client_cleanup(struct ceph_client *client) 467 { 468 dout("ceph_debugfs_client_cleanup %p\n", client); 469 debugfs_remove(client->debugfs_options); 470 debugfs_remove(client->debugfs_osdmap); 471 debugfs_remove(client->debugfs_monmap); 472 debugfs_remove(client->osdc.debugfs_file); 473 debugfs_remove(client->monc.debugfs_file); 474 debugfs_remove(client->debugfs_dir); 475 } 476 477 #else /* CONFIG_DEBUG_FS */ 478 479 int ceph_debugfs_init(void) 480 { 481 return 0; 482 } 483 484 void ceph_debugfs_cleanup(void) 485 { 486 } 487 488 int ceph_debugfs_client_init(struct ceph_client *client) 489 { 490 return 0; 491 } 492 493 void ceph_debugfs_client_cleanup(struct ceph_client *client) 494 { 495 } 496 497 #endif /* CONFIG_DEBUG_FS */ 498 499 EXPORT_SYMBOL(ceph_debugfs_init); 500 EXPORT_SYMBOL(ceph_debugfs_cleanup); 501