1 #include "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 "super.h" 11 #include "mds_client.h" 12 #include "mon_client.h" 13 #include "auth.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 * .../mdsmap - current mdsmap 23 * .../monmap - current monmap 24 * .../osdc - active osd requests 25 * .../mdsc - active mds requests 26 * .../monc - mon client state 27 * .../dentry_lru - dump contents of dentry lru 28 * .../caps - expose cap (reservation) stats 29 * .../bdi - symlink to ../../bdi/something 30 */ 31 32 static struct dentry *ceph_debugfs_dir; 33 34 static int monmap_show(struct seq_file *s, void *p) 35 { 36 int i; 37 struct ceph_client *client = s->private; 38 39 if (client->monc.monmap == NULL) 40 return 0; 41 42 seq_printf(s, "epoch %d\n", client->monc.monmap->epoch); 43 for (i = 0; i < client->monc.monmap->num_mon; i++) { 44 struct ceph_entity_inst *inst = 45 &client->monc.monmap->mon_inst[i]; 46 47 seq_printf(s, "\t%s%lld\t%s\n", 48 ENTITY_NAME(inst->name), 49 pr_addr(&inst->addr.in_addr)); 50 } 51 return 0; 52 } 53 54 static int mdsmap_show(struct seq_file *s, void *p) 55 { 56 int i; 57 struct ceph_client *client = s->private; 58 59 if (client->mdsc.mdsmap == NULL) 60 return 0; 61 seq_printf(s, "epoch %d\n", client->mdsc.mdsmap->m_epoch); 62 seq_printf(s, "root %d\n", client->mdsc.mdsmap->m_root); 63 seq_printf(s, "session_timeout %d\n", 64 client->mdsc.mdsmap->m_session_timeout); 65 seq_printf(s, "session_autoclose %d\n", 66 client->mdsc.mdsmap->m_session_autoclose); 67 for (i = 0; i < client->mdsc.mdsmap->m_max_mds; i++) { 68 struct ceph_entity_addr *addr = 69 &client->mdsc.mdsmap->m_info[i].addr; 70 int state = client->mdsc.mdsmap->m_info[i].state; 71 72 seq_printf(s, "\tmds%d\t%s\t(%s)\n", i, pr_addr(&addr->in_addr), 73 ceph_mds_state_name(state)); 74 } 75 return 0; 76 } 77 78 static int osdmap_show(struct seq_file *s, void *p) 79 { 80 int i; 81 struct ceph_client *client = s->private; 82 struct rb_node *n; 83 84 if (client->osdc.osdmap == NULL) 85 return 0; 86 seq_printf(s, "epoch %d\n", client->osdc.osdmap->epoch); 87 seq_printf(s, "flags%s%s\n", 88 (client->osdc.osdmap->flags & CEPH_OSDMAP_NEARFULL) ? 89 " NEARFULL" : "", 90 (client->osdc.osdmap->flags & CEPH_OSDMAP_FULL) ? 91 " FULL" : ""); 92 for (n = rb_first(&client->osdc.osdmap->pg_pools); n; n = rb_next(n)) { 93 struct ceph_pg_pool_info *pool = 94 rb_entry(n, struct ceph_pg_pool_info, node); 95 seq_printf(s, "pg_pool %d pg_num %d / %d, lpg_num %d / %d\n", 96 pool->id, pool->v.pg_num, pool->pg_num_mask, 97 pool->v.lpg_num, pool->lpg_num_mask); 98 } 99 for (i = 0; i < client->osdc.osdmap->max_osd; i++) { 100 struct ceph_entity_addr *addr = 101 &client->osdc.osdmap->osd_addr[i]; 102 int state = client->osdc.osdmap->osd_state[i]; 103 char sb[64]; 104 105 seq_printf(s, "\tosd%d\t%s\t%3d%%\t(%s)\n", 106 i, pr_addr(&addr->in_addr), 107 ((client->osdc.osdmap->osd_weight[i]*100) >> 16), 108 ceph_osdmap_state_str(sb, sizeof(sb), state)); 109 } 110 return 0; 111 } 112 113 static int monc_show(struct seq_file *s, void *p) 114 { 115 struct ceph_client *client = s->private; 116 struct ceph_mon_generic_request *req; 117 struct ceph_mon_client *monc = &client->monc; 118 struct rb_node *rp; 119 120 mutex_lock(&monc->mutex); 121 122 if (monc->have_mdsmap) 123 seq_printf(s, "have mdsmap %u\n", (unsigned)monc->have_mdsmap); 124 if (monc->have_osdmap) 125 seq_printf(s, "have osdmap %u\n", (unsigned)monc->have_osdmap); 126 if (monc->want_next_osdmap) 127 seq_printf(s, "want next osdmap\n"); 128 129 for (rp = rb_first(&monc->generic_request_tree); rp; rp = rb_next(rp)) { 130 __u16 op; 131 req = rb_entry(rp, struct ceph_mon_generic_request, node); 132 op = le16_to_cpu(req->request->hdr.type); 133 if (op == CEPH_MSG_STATFS) 134 seq_printf(s, "%lld statfs\n", req->tid); 135 else 136 seq_printf(s, "%lld unknown\n", req->tid); 137 } 138 139 mutex_unlock(&monc->mutex); 140 return 0; 141 } 142 143 static int mdsc_show(struct seq_file *s, void *p) 144 { 145 struct ceph_client *client = s->private; 146 struct ceph_mds_client *mdsc = &client->mdsc; 147 struct ceph_mds_request *req; 148 struct rb_node *rp; 149 int pathlen; 150 u64 pathbase; 151 char *path; 152 153 mutex_lock(&mdsc->mutex); 154 for (rp = rb_first(&mdsc->request_tree); rp; rp = rb_next(rp)) { 155 req = rb_entry(rp, struct ceph_mds_request, r_node); 156 157 if (req->r_request) 158 seq_printf(s, "%lld\tmds%d\t", req->r_tid, req->r_mds); 159 else 160 seq_printf(s, "%lld\t(no request)\t", req->r_tid); 161 162 seq_printf(s, "%s", ceph_mds_op_name(req->r_op)); 163 164 if (req->r_got_unsafe) 165 seq_printf(s, "\t(unsafe)"); 166 else 167 seq_printf(s, "\t"); 168 169 if (req->r_inode) { 170 seq_printf(s, " #%llx", ceph_ino(req->r_inode)); 171 } else if (req->r_dentry) { 172 path = ceph_mdsc_build_path(req->r_dentry, &pathlen, 173 &pathbase, 0); 174 spin_lock(&req->r_dentry->d_lock); 175 seq_printf(s, " #%llx/%.*s (%s)", 176 ceph_ino(req->r_dentry->d_parent->d_inode), 177 req->r_dentry->d_name.len, 178 req->r_dentry->d_name.name, 179 path ? path : ""); 180 spin_unlock(&req->r_dentry->d_lock); 181 kfree(path); 182 } else if (req->r_path1) { 183 seq_printf(s, " #%llx/%s", req->r_ino1.ino, 184 req->r_path1); 185 } 186 187 if (req->r_old_dentry) { 188 path = ceph_mdsc_build_path(req->r_old_dentry, &pathlen, 189 &pathbase, 0); 190 spin_lock(&req->r_old_dentry->d_lock); 191 seq_printf(s, " #%llx/%.*s (%s)", 192 ceph_ino(req->r_old_dentry->d_parent->d_inode), 193 req->r_old_dentry->d_name.len, 194 req->r_old_dentry->d_name.name, 195 path ? path : ""); 196 spin_unlock(&req->r_old_dentry->d_lock); 197 kfree(path); 198 } else if (req->r_path2) { 199 if (req->r_ino2.ino) 200 seq_printf(s, " #%llx/%s", req->r_ino2.ino, 201 req->r_path2); 202 else 203 seq_printf(s, " %s", req->r_path2); 204 } 205 206 seq_printf(s, "\n"); 207 } 208 mutex_unlock(&mdsc->mutex); 209 210 return 0; 211 } 212 213 static int osdc_show(struct seq_file *s, void *pp) 214 { 215 struct ceph_client *client = s->private; 216 struct ceph_osd_client *osdc = &client->osdc; 217 struct rb_node *p; 218 219 mutex_lock(&osdc->request_mutex); 220 for (p = rb_first(&osdc->requests); p; p = rb_next(p)) { 221 struct ceph_osd_request *req; 222 struct ceph_osd_request_head *head; 223 struct ceph_osd_op *op; 224 int num_ops; 225 int opcode, olen; 226 int i; 227 228 req = rb_entry(p, struct ceph_osd_request, r_node); 229 230 seq_printf(s, "%lld\tosd%d\t%d.%x\t", req->r_tid, 231 req->r_osd ? req->r_osd->o_osd : -1, 232 le32_to_cpu(req->r_pgid.pool), 233 le16_to_cpu(req->r_pgid.ps)); 234 235 head = req->r_request->front.iov_base; 236 op = (void *)(head + 1); 237 238 num_ops = le16_to_cpu(head->num_ops); 239 olen = le32_to_cpu(head->object_len); 240 seq_printf(s, "%.*s", olen, 241 (const char *)(head->ops + num_ops)); 242 243 if (req->r_reassert_version.epoch) 244 seq_printf(s, "\t%u'%llu", 245 (unsigned)le32_to_cpu(req->r_reassert_version.epoch), 246 le64_to_cpu(req->r_reassert_version.version)); 247 else 248 seq_printf(s, "\t"); 249 250 for (i = 0; i < num_ops; i++) { 251 opcode = le16_to_cpu(op->op); 252 seq_printf(s, "\t%s", ceph_osd_op_name(opcode)); 253 op++; 254 } 255 256 seq_printf(s, "\n"); 257 } 258 mutex_unlock(&osdc->request_mutex); 259 return 0; 260 } 261 262 static int caps_show(struct seq_file *s, void *p) 263 { 264 struct ceph_client *client = p; 265 int total, avail, used, reserved, min; 266 267 ceph_reservation_status(client, &total, &avail, &used, &reserved, &min); 268 seq_printf(s, "total\t\t%d\n" 269 "avail\t\t%d\n" 270 "used\t\t%d\n" 271 "reserved\t%d\n" 272 "min\t%d\n", 273 total, avail, used, reserved, min); 274 return 0; 275 } 276 277 static int dentry_lru_show(struct seq_file *s, void *ptr) 278 { 279 struct ceph_client *client = s->private; 280 struct ceph_mds_client *mdsc = &client->mdsc; 281 struct ceph_dentry_info *di; 282 283 spin_lock(&mdsc->dentry_lru_lock); 284 list_for_each_entry(di, &mdsc->dentry_lru, lru) { 285 struct dentry *dentry = di->dentry; 286 seq_printf(s, "%p %p\t%.*s\n", 287 di, dentry, dentry->d_name.len, dentry->d_name.name); 288 } 289 spin_unlock(&mdsc->dentry_lru_lock); 290 291 return 0; 292 } 293 294 #define DEFINE_SHOW_FUNC(name) \ 295 static int name##_open(struct inode *inode, struct file *file) \ 296 { \ 297 struct seq_file *sf; \ 298 int ret; \ 299 \ 300 ret = single_open(file, name, NULL); \ 301 sf = file->private_data; \ 302 sf->private = inode->i_private; \ 303 return ret; \ 304 } \ 305 \ 306 static const struct file_operations name##_fops = { \ 307 .open = name##_open, \ 308 .read = seq_read, \ 309 .llseek = seq_lseek, \ 310 .release = single_release, \ 311 }; 312 313 DEFINE_SHOW_FUNC(monmap_show) 314 DEFINE_SHOW_FUNC(mdsmap_show) 315 DEFINE_SHOW_FUNC(osdmap_show) 316 DEFINE_SHOW_FUNC(monc_show) 317 DEFINE_SHOW_FUNC(mdsc_show) 318 DEFINE_SHOW_FUNC(osdc_show) 319 DEFINE_SHOW_FUNC(dentry_lru_show) 320 DEFINE_SHOW_FUNC(caps_show) 321 322 static int congestion_kb_set(void *data, u64 val) 323 { 324 struct ceph_client *client = (struct ceph_client *)data; 325 326 if (client) 327 client->mount_args->congestion_kb = (int)val; 328 329 return 0; 330 } 331 332 static int congestion_kb_get(void *data, u64 *val) 333 { 334 struct ceph_client *client = (struct ceph_client *)data; 335 336 if (client) 337 *val = (u64)client->mount_args->congestion_kb; 338 339 return 0; 340 } 341 342 343 DEFINE_SIMPLE_ATTRIBUTE(congestion_kb_fops, congestion_kb_get, 344 congestion_kb_set, "%llu\n"); 345 346 int __init ceph_debugfs_init(void) 347 { 348 ceph_debugfs_dir = debugfs_create_dir("ceph", NULL); 349 if (!ceph_debugfs_dir) 350 return -ENOMEM; 351 return 0; 352 } 353 354 void ceph_debugfs_cleanup(void) 355 { 356 debugfs_remove(ceph_debugfs_dir); 357 } 358 359 int ceph_debugfs_client_init(struct ceph_client *client) 360 { 361 int ret = 0; 362 char name[80]; 363 364 snprintf(name, sizeof(name), FSID_FORMAT ".client%lld", 365 PR_FSID(&client->fsid), client->monc.auth->global_id); 366 367 client->debugfs_dir = debugfs_create_dir(name, ceph_debugfs_dir); 368 if (!client->debugfs_dir) 369 goto out; 370 371 client->monc.debugfs_file = debugfs_create_file("monc", 372 0600, 373 client->debugfs_dir, 374 client, 375 &monc_show_fops); 376 if (!client->monc.debugfs_file) 377 goto out; 378 379 client->mdsc.debugfs_file = debugfs_create_file("mdsc", 380 0600, 381 client->debugfs_dir, 382 client, 383 &mdsc_show_fops); 384 if (!client->mdsc.debugfs_file) 385 goto out; 386 387 client->osdc.debugfs_file = debugfs_create_file("osdc", 388 0600, 389 client->debugfs_dir, 390 client, 391 &osdc_show_fops); 392 if (!client->osdc.debugfs_file) 393 goto out; 394 395 client->debugfs_monmap = debugfs_create_file("monmap", 396 0600, 397 client->debugfs_dir, 398 client, 399 &monmap_show_fops); 400 if (!client->debugfs_monmap) 401 goto out; 402 403 client->debugfs_mdsmap = debugfs_create_file("mdsmap", 404 0600, 405 client->debugfs_dir, 406 client, 407 &mdsmap_show_fops); 408 if (!client->debugfs_mdsmap) 409 goto out; 410 411 client->debugfs_osdmap = debugfs_create_file("osdmap", 412 0600, 413 client->debugfs_dir, 414 client, 415 &osdmap_show_fops); 416 if (!client->debugfs_osdmap) 417 goto out; 418 419 client->debugfs_dentry_lru = debugfs_create_file("dentry_lru", 420 0600, 421 client->debugfs_dir, 422 client, 423 &dentry_lru_show_fops); 424 if (!client->debugfs_dentry_lru) 425 goto out; 426 427 client->debugfs_caps = debugfs_create_file("caps", 428 0400, 429 client->debugfs_dir, 430 client, 431 &caps_show_fops); 432 if (!client->debugfs_caps) 433 goto out; 434 435 client->debugfs_congestion_kb = debugfs_create_file("writeback_congestion_kb", 436 0600, 437 client->debugfs_dir, 438 client, 439 &congestion_kb_fops); 440 if (!client->debugfs_congestion_kb) 441 goto out; 442 443 sprintf(name, "../../bdi/%s", dev_name(client->sb->s_bdi->dev)); 444 client->debugfs_bdi = debugfs_create_symlink("bdi", client->debugfs_dir, 445 name); 446 447 return 0; 448 449 out: 450 ceph_debugfs_client_cleanup(client); 451 return ret; 452 } 453 454 void ceph_debugfs_client_cleanup(struct ceph_client *client) 455 { 456 debugfs_remove(client->debugfs_bdi); 457 debugfs_remove(client->debugfs_caps); 458 debugfs_remove(client->debugfs_dentry_lru); 459 debugfs_remove(client->debugfs_osdmap); 460 debugfs_remove(client->debugfs_mdsmap); 461 debugfs_remove(client->debugfs_monmap); 462 debugfs_remove(client->osdc.debugfs_file); 463 debugfs_remove(client->mdsc.debugfs_file); 464 debugfs_remove(client->monc.debugfs_file); 465 debugfs_remove(client->debugfs_congestion_kb); 466 debugfs_remove(client->debugfs_dir); 467 } 468 469 #else // CONFIG_DEBUG_FS 470 471 int __init ceph_debugfs_init(void) 472 { 473 return 0; 474 } 475 476 void ceph_debugfs_cleanup(void) 477 { 478 } 479 480 int ceph_debugfs_client_init(struct ceph_client *client) 481 { 482 return 0; 483 } 484 485 void ceph_debugfs_client_cleanup(struct ceph_client *client) 486 { 487 } 488 489 #endif // CONFIG_DEBUG_FS 490