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_statfs_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->statfs_request_tree); rp; rp = rb_next(rp)) { 130 req = rb_entry(rp, struct ceph_mon_statfs_request, node); 131 seq_printf(s, "%lld statfs\n", req->tid); 132 } 133 134 mutex_unlock(&monc->mutex); 135 return 0; 136 } 137 138 static int mdsc_show(struct seq_file *s, void *p) 139 { 140 struct ceph_client *client = s->private; 141 struct ceph_mds_client *mdsc = &client->mdsc; 142 struct ceph_mds_request *req; 143 struct rb_node *rp; 144 int pathlen; 145 u64 pathbase; 146 char *path; 147 148 mutex_lock(&mdsc->mutex); 149 for (rp = rb_first(&mdsc->request_tree); rp; rp = rb_next(rp)) { 150 req = rb_entry(rp, struct ceph_mds_request, r_node); 151 152 if (req->r_request) 153 seq_printf(s, "%lld\tmds%d\t", req->r_tid, req->r_mds); 154 else 155 seq_printf(s, "%lld\t(no request)\t", req->r_tid); 156 157 seq_printf(s, "%s", ceph_mds_op_name(req->r_op)); 158 159 if (req->r_got_unsafe) 160 seq_printf(s, "\t(unsafe)"); 161 else 162 seq_printf(s, "\t"); 163 164 if (req->r_inode) { 165 seq_printf(s, " #%llx", ceph_ino(req->r_inode)); 166 } else if (req->r_dentry) { 167 path = ceph_mdsc_build_path(req->r_dentry, &pathlen, 168 &pathbase, 0); 169 spin_lock(&req->r_dentry->d_lock); 170 seq_printf(s, " #%llx/%.*s (%s)", 171 ceph_ino(req->r_dentry->d_parent->d_inode), 172 req->r_dentry->d_name.len, 173 req->r_dentry->d_name.name, 174 path ? path : ""); 175 spin_unlock(&req->r_dentry->d_lock); 176 kfree(path); 177 } else if (req->r_path1) { 178 seq_printf(s, " #%llx/%s", req->r_ino1.ino, 179 req->r_path1); 180 } 181 182 if (req->r_old_dentry) { 183 path = ceph_mdsc_build_path(req->r_old_dentry, &pathlen, 184 &pathbase, 0); 185 spin_lock(&req->r_old_dentry->d_lock); 186 seq_printf(s, " #%llx/%.*s (%s)", 187 ceph_ino(req->r_old_dentry->d_parent->d_inode), 188 req->r_old_dentry->d_name.len, 189 req->r_old_dentry->d_name.name, 190 path ? path : ""); 191 spin_unlock(&req->r_old_dentry->d_lock); 192 kfree(path); 193 } else if (req->r_path2) { 194 if (req->r_ino2.ino) 195 seq_printf(s, " #%llx/%s", req->r_ino2.ino, 196 req->r_path2); 197 else 198 seq_printf(s, " %s", req->r_path2); 199 } 200 201 seq_printf(s, "\n"); 202 } 203 mutex_unlock(&mdsc->mutex); 204 205 return 0; 206 } 207 208 static int osdc_show(struct seq_file *s, void *pp) 209 { 210 struct ceph_client *client = s->private; 211 struct ceph_osd_client *osdc = &client->osdc; 212 struct rb_node *p; 213 214 mutex_lock(&osdc->request_mutex); 215 for (p = rb_first(&osdc->requests); p; p = rb_next(p)) { 216 struct ceph_osd_request *req; 217 struct ceph_osd_request_head *head; 218 struct ceph_osd_op *op; 219 int num_ops; 220 int opcode, olen; 221 int i; 222 223 req = rb_entry(p, struct ceph_osd_request, r_node); 224 225 seq_printf(s, "%lld\tosd%d\t%d.%x\t", req->r_tid, 226 req->r_osd ? req->r_osd->o_osd : -1, 227 le32_to_cpu(req->r_pgid.pool), 228 le16_to_cpu(req->r_pgid.ps)); 229 230 head = req->r_request->front.iov_base; 231 op = (void *)(head + 1); 232 233 num_ops = le16_to_cpu(head->num_ops); 234 olen = le32_to_cpu(head->object_len); 235 seq_printf(s, "%.*s", olen, 236 (const char *)(head->ops + num_ops)); 237 238 if (req->r_reassert_version.epoch) 239 seq_printf(s, "\t%u'%llu", 240 (unsigned)le32_to_cpu(req->r_reassert_version.epoch), 241 le64_to_cpu(req->r_reassert_version.version)); 242 else 243 seq_printf(s, "\t"); 244 245 for (i = 0; i < num_ops; i++) { 246 opcode = le16_to_cpu(op->op); 247 seq_printf(s, "\t%s", ceph_osd_op_name(opcode)); 248 op++; 249 } 250 251 seq_printf(s, "\n"); 252 } 253 mutex_unlock(&osdc->request_mutex); 254 return 0; 255 } 256 257 static int caps_show(struct seq_file *s, void *p) 258 { 259 struct ceph_client *client = p; 260 int total, avail, used, reserved, min; 261 262 ceph_reservation_status(client, &total, &avail, &used, &reserved, &min); 263 seq_printf(s, "total\t\t%d\n" 264 "avail\t\t%d\n" 265 "used\t\t%d\n" 266 "reserved\t%d\n" 267 "min\t%d\n", 268 total, avail, used, reserved, min); 269 return 0; 270 } 271 272 static int dentry_lru_show(struct seq_file *s, void *ptr) 273 { 274 struct ceph_client *client = s->private; 275 struct ceph_mds_client *mdsc = &client->mdsc; 276 struct ceph_dentry_info *di; 277 278 spin_lock(&mdsc->dentry_lru_lock); 279 list_for_each_entry(di, &mdsc->dentry_lru, lru) { 280 struct dentry *dentry = di->dentry; 281 seq_printf(s, "%p %p\t%.*s\n", 282 di, dentry, dentry->d_name.len, dentry->d_name.name); 283 } 284 spin_unlock(&mdsc->dentry_lru_lock); 285 286 return 0; 287 } 288 289 #define DEFINE_SHOW_FUNC(name) \ 290 static int name##_open(struct inode *inode, struct file *file) \ 291 { \ 292 struct seq_file *sf; \ 293 int ret; \ 294 \ 295 ret = single_open(file, name, NULL); \ 296 sf = file->private_data; \ 297 sf->private = inode->i_private; \ 298 return ret; \ 299 } \ 300 \ 301 static const struct file_operations name##_fops = { \ 302 .open = name##_open, \ 303 .read = seq_read, \ 304 .llseek = seq_lseek, \ 305 .release = single_release, \ 306 }; 307 308 DEFINE_SHOW_FUNC(monmap_show) 309 DEFINE_SHOW_FUNC(mdsmap_show) 310 DEFINE_SHOW_FUNC(osdmap_show) 311 DEFINE_SHOW_FUNC(monc_show) 312 DEFINE_SHOW_FUNC(mdsc_show) 313 DEFINE_SHOW_FUNC(osdc_show) 314 DEFINE_SHOW_FUNC(dentry_lru_show) 315 DEFINE_SHOW_FUNC(caps_show) 316 317 static int congestion_kb_set(void *data, u64 val) 318 { 319 struct ceph_client *client = (struct ceph_client *)data; 320 321 if (client) 322 client->mount_args->congestion_kb = (int)val; 323 324 return 0; 325 } 326 327 static int congestion_kb_get(void *data, u64 *val) 328 { 329 struct ceph_client *client = (struct ceph_client *)data; 330 331 if (client) 332 *val = (u64)client->mount_args->congestion_kb; 333 334 return 0; 335 } 336 337 338 DEFINE_SIMPLE_ATTRIBUTE(congestion_kb_fops, congestion_kb_get, 339 congestion_kb_set, "%llu\n"); 340 341 int __init ceph_debugfs_init(void) 342 { 343 ceph_debugfs_dir = debugfs_create_dir("ceph", NULL); 344 if (!ceph_debugfs_dir) 345 return -ENOMEM; 346 return 0; 347 } 348 349 void ceph_debugfs_cleanup(void) 350 { 351 debugfs_remove(ceph_debugfs_dir); 352 } 353 354 int ceph_debugfs_client_init(struct ceph_client *client) 355 { 356 int ret = 0; 357 char name[80]; 358 359 snprintf(name, sizeof(name), FSID_FORMAT ".client%lld", 360 PR_FSID(&client->fsid), client->monc.auth->global_id); 361 362 client->debugfs_dir = debugfs_create_dir(name, ceph_debugfs_dir); 363 if (!client->debugfs_dir) 364 goto out; 365 366 client->monc.debugfs_file = debugfs_create_file("monc", 367 0600, 368 client->debugfs_dir, 369 client, 370 &monc_show_fops); 371 if (!client->monc.debugfs_file) 372 goto out; 373 374 client->mdsc.debugfs_file = debugfs_create_file("mdsc", 375 0600, 376 client->debugfs_dir, 377 client, 378 &mdsc_show_fops); 379 if (!client->mdsc.debugfs_file) 380 goto out; 381 382 client->osdc.debugfs_file = debugfs_create_file("osdc", 383 0600, 384 client->debugfs_dir, 385 client, 386 &osdc_show_fops); 387 if (!client->osdc.debugfs_file) 388 goto out; 389 390 client->debugfs_monmap = debugfs_create_file("monmap", 391 0600, 392 client->debugfs_dir, 393 client, 394 &monmap_show_fops); 395 if (!client->debugfs_monmap) 396 goto out; 397 398 client->debugfs_mdsmap = debugfs_create_file("mdsmap", 399 0600, 400 client->debugfs_dir, 401 client, 402 &mdsmap_show_fops); 403 if (!client->debugfs_mdsmap) 404 goto out; 405 406 client->debugfs_osdmap = debugfs_create_file("osdmap", 407 0600, 408 client->debugfs_dir, 409 client, 410 &osdmap_show_fops); 411 if (!client->debugfs_osdmap) 412 goto out; 413 414 client->debugfs_dentry_lru = debugfs_create_file("dentry_lru", 415 0600, 416 client->debugfs_dir, 417 client, 418 &dentry_lru_show_fops); 419 if (!client->debugfs_dentry_lru) 420 goto out; 421 422 client->debugfs_caps = debugfs_create_file("caps", 423 0400, 424 client->debugfs_dir, 425 client, 426 &caps_show_fops); 427 if (!client->debugfs_caps) 428 goto out; 429 430 client->debugfs_congestion_kb = debugfs_create_file("writeback_congestion_kb", 431 0600, 432 client->debugfs_dir, 433 client, 434 &congestion_kb_fops); 435 if (!client->debugfs_congestion_kb) 436 goto out; 437 438 sprintf(name, "../../bdi/%s", dev_name(client->sb->s_bdi->dev)); 439 client->debugfs_bdi = debugfs_create_symlink("bdi", client->debugfs_dir, 440 name); 441 442 return 0; 443 444 out: 445 ceph_debugfs_client_cleanup(client); 446 return ret; 447 } 448 449 void ceph_debugfs_client_cleanup(struct ceph_client *client) 450 { 451 debugfs_remove(client->debugfs_bdi); 452 debugfs_remove(client->debugfs_caps); 453 debugfs_remove(client->debugfs_dentry_lru); 454 debugfs_remove(client->debugfs_osdmap); 455 debugfs_remove(client->debugfs_mdsmap); 456 debugfs_remove(client->debugfs_monmap); 457 debugfs_remove(client->osdc.debugfs_file); 458 debugfs_remove(client->mdsc.debugfs_file); 459 debugfs_remove(client->monc.debugfs_file); 460 debugfs_remove(client->debugfs_congestion_kb); 461 debugfs_remove(client->debugfs_dir); 462 } 463 464 #else // CONFIG_DEBUG_FS 465 466 int __init ceph_debugfs_init(void) 467 { 468 return 0; 469 } 470 471 void ceph_debugfs_cleanup(void) 472 { 473 } 474 475 int ceph_debugfs_client_init(struct ceph_client *client) 476 { 477 return 0; 478 } 479 480 void ceph_debugfs_client_cleanup(struct ceph_client *client) 481 { 482 } 483 484 #endif // CONFIG_DEBUG_FS 485