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 int 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 } 107 108 up_read(&osdc->lock); 109 return 0; 110 } 111 112 static int monc_show(struct seq_file *s, void *p) 113 { 114 struct ceph_client *client = s->private; 115 struct ceph_mon_generic_request *req; 116 struct ceph_mon_client *monc = &client->monc; 117 struct rb_node *rp; 118 int i; 119 120 mutex_lock(&monc->mutex); 121 122 for (i = 0; i < ARRAY_SIZE(monc->subs); i++) { 123 seq_printf(s, "have %s %u", ceph_sub_str[i], 124 monc->subs[i].have); 125 if (monc->subs[i].want) 126 seq_printf(s, " want %llu%s", 127 le64_to_cpu(monc->subs[i].item.start), 128 (monc->subs[i].item.flags & 129 CEPH_SUBSCRIBE_ONETIME ? "" : "+")); 130 seq_putc(s, '\n'); 131 } 132 seq_printf(s, "fs_cluster_id %d\n", monc->fs_cluster_id); 133 134 for (rp = rb_first(&monc->generic_request_tree); rp; rp = rb_next(rp)) { 135 __u16 op; 136 req = rb_entry(rp, struct ceph_mon_generic_request, node); 137 op = le16_to_cpu(req->request->hdr.type); 138 if (op == CEPH_MSG_STATFS) 139 seq_printf(s, "%llu statfs\n", req->tid); 140 else if (op == CEPH_MSG_MON_GET_VERSION) 141 seq_printf(s, "%llu mon_get_version", req->tid); 142 else 143 seq_printf(s, "%llu unknown\n", req->tid); 144 } 145 146 mutex_unlock(&monc->mutex); 147 return 0; 148 } 149 150 static void dump_target(struct seq_file *s, struct ceph_osd_request_target *t) 151 { 152 int i; 153 154 seq_printf(s, "osd%d\t%llu.%x\t[", t->osd, t->pgid.pool, t->pgid.seed); 155 for (i = 0; i < t->up.size; i++) 156 seq_printf(s, "%s%d", (!i ? "" : ","), t->up.osds[i]); 157 seq_printf(s, "]/%d\t[", t->up.primary); 158 for (i = 0; i < t->acting.size; i++) 159 seq_printf(s, "%s%d", (!i ? "" : ","), t->acting.osds[i]); 160 seq_printf(s, "]/%d\t", t->acting.primary); 161 if (t->target_oloc.pool_ns) { 162 seq_printf(s, "%*pE/%*pE\t0x%x", 163 (int)t->target_oloc.pool_ns->len, 164 t->target_oloc.pool_ns->str, 165 t->target_oid.name_len, t->target_oid.name, t->flags); 166 } else { 167 seq_printf(s, "%*pE\t0x%x", t->target_oid.name_len, 168 t->target_oid.name, t->flags); 169 } 170 if (t->paused) 171 seq_puts(s, "\tP"); 172 } 173 174 static void dump_request(struct seq_file *s, struct ceph_osd_request *req) 175 { 176 int i; 177 178 seq_printf(s, "%llu\t", req->r_tid); 179 dump_target(s, &req->r_t); 180 181 seq_printf(s, "\t%d", req->r_attempts); 182 183 for (i = 0; i < req->r_num_ops; i++) { 184 struct ceph_osd_req_op *op = &req->r_ops[i]; 185 186 seq_printf(s, "%s%s", (i == 0 ? "\t" : ","), 187 ceph_osd_op_name(op->op)); 188 if (op->op == CEPH_OSD_OP_WATCH) 189 seq_printf(s, "-%s", 190 ceph_osd_watch_op_name(op->watch.op)); 191 } 192 193 seq_putc(s, '\n'); 194 } 195 196 static void dump_requests(struct seq_file *s, struct ceph_osd *osd) 197 { 198 struct rb_node *n; 199 200 mutex_lock(&osd->lock); 201 for (n = rb_first(&osd->o_requests); n; n = rb_next(n)) { 202 struct ceph_osd_request *req = 203 rb_entry(n, struct ceph_osd_request, r_node); 204 205 dump_request(s, req); 206 } 207 208 mutex_unlock(&osd->lock); 209 } 210 211 static void dump_linger_request(struct seq_file *s, 212 struct ceph_osd_linger_request *lreq) 213 { 214 seq_printf(s, "%llu\t", lreq->linger_id); 215 dump_target(s, &lreq->t); 216 217 seq_printf(s, "\t%u\t%s%s/%d\n", lreq->register_gen, 218 lreq->is_watch ? "W" : "N", lreq->committed ? "C" : "", 219 lreq->last_error); 220 } 221 222 static void dump_linger_requests(struct seq_file *s, struct ceph_osd *osd) 223 { 224 struct rb_node *n; 225 226 mutex_lock(&osd->lock); 227 for (n = rb_first(&osd->o_linger_requests); n; n = rb_next(n)) { 228 struct ceph_osd_linger_request *lreq = 229 rb_entry(n, struct ceph_osd_linger_request, node); 230 231 dump_linger_request(s, lreq); 232 } 233 234 mutex_unlock(&osd->lock); 235 } 236 237 static int osdc_show(struct seq_file *s, void *pp) 238 { 239 struct ceph_client *client = s->private; 240 struct ceph_osd_client *osdc = &client->osdc; 241 struct rb_node *n; 242 243 down_read(&osdc->lock); 244 seq_printf(s, "REQUESTS %d homeless %d\n", 245 atomic_read(&osdc->num_requests), 246 atomic_read(&osdc->num_homeless)); 247 for (n = rb_first(&osdc->osds); n; n = rb_next(n)) { 248 struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); 249 250 dump_requests(s, osd); 251 } 252 dump_requests(s, &osdc->homeless_osd); 253 254 seq_puts(s, "LINGER REQUESTS\n"); 255 for (n = rb_first(&osdc->osds); n; n = rb_next(n)) { 256 struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); 257 258 dump_linger_requests(s, osd); 259 } 260 dump_linger_requests(s, &osdc->homeless_osd); 261 262 up_read(&osdc->lock); 263 return 0; 264 } 265 266 static int client_options_show(struct seq_file *s, void *p) 267 { 268 struct ceph_client *client = s->private; 269 int ret; 270 271 ret = ceph_print_client_options(s, client); 272 if (ret) 273 return ret; 274 275 seq_putc(s, '\n'); 276 return 0; 277 } 278 279 CEPH_DEFINE_SHOW_FUNC(monmap_show) 280 CEPH_DEFINE_SHOW_FUNC(osdmap_show) 281 CEPH_DEFINE_SHOW_FUNC(monc_show) 282 CEPH_DEFINE_SHOW_FUNC(osdc_show) 283 CEPH_DEFINE_SHOW_FUNC(client_options_show) 284 285 int ceph_debugfs_init(void) 286 { 287 ceph_debugfs_dir = debugfs_create_dir("ceph", NULL); 288 if (!ceph_debugfs_dir) 289 return -ENOMEM; 290 return 0; 291 } 292 293 void ceph_debugfs_cleanup(void) 294 { 295 debugfs_remove(ceph_debugfs_dir); 296 } 297 298 int ceph_debugfs_client_init(struct ceph_client *client) 299 { 300 int ret = -ENOMEM; 301 char name[80]; 302 303 snprintf(name, sizeof(name), "%pU.client%lld", &client->fsid, 304 client->monc.auth->global_id); 305 306 dout("ceph_debugfs_client_init %p %s\n", client, name); 307 308 BUG_ON(client->debugfs_dir); 309 client->debugfs_dir = debugfs_create_dir(name, ceph_debugfs_dir); 310 if (!client->debugfs_dir) 311 goto out; 312 313 client->monc.debugfs_file = debugfs_create_file("monc", 314 0600, 315 client->debugfs_dir, 316 client, 317 &monc_show_fops); 318 if (!client->monc.debugfs_file) 319 goto out; 320 321 client->osdc.debugfs_file = debugfs_create_file("osdc", 322 0600, 323 client->debugfs_dir, 324 client, 325 &osdc_show_fops); 326 if (!client->osdc.debugfs_file) 327 goto out; 328 329 client->debugfs_monmap = debugfs_create_file("monmap", 330 0600, 331 client->debugfs_dir, 332 client, 333 &monmap_show_fops); 334 if (!client->debugfs_monmap) 335 goto out; 336 337 client->debugfs_osdmap = debugfs_create_file("osdmap", 338 0600, 339 client->debugfs_dir, 340 client, 341 &osdmap_show_fops); 342 if (!client->debugfs_osdmap) 343 goto out; 344 345 client->debugfs_options = debugfs_create_file("client_options", 346 0600, 347 client->debugfs_dir, 348 client, 349 &client_options_show_fops); 350 if (!client->debugfs_options) 351 goto out; 352 353 return 0; 354 355 out: 356 ceph_debugfs_client_cleanup(client); 357 return ret; 358 } 359 360 void ceph_debugfs_client_cleanup(struct ceph_client *client) 361 { 362 dout("ceph_debugfs_client_cleanup %p\n", client); 363 debugfs_remove(client->debugfs_options); 364 debugfs_remove(client->debugfs_osdmap); 365 debugfs_remove(client->debugfs_monmap); 366 debugfs_remove(client->osdc.debugfs_file); 367 debugfs_remove(client->monc.debugfs_file); 368 debugfs_remove(client->debugfs_dir); 369 } 370 371 #else /* CONFIG_DEBUG_FS */ 372 373 int ceph_debugfs_init(void) 374 { 375 return 0; 376 } 377 378 void ceph_debugfs_cleanup(void) 379 { 380 } 381 382 int ceph_debugfs_client_init(struct ceph_client *client) 383 { 384 return 0; 385 } 386 387 void ceph_debugfs_client_cleanup(struct ceph_client *client) 388 { 389 } 390 391 #endif /* CONFIG_DEBUG_FS */ 392 393 EXPORT_SYMBOL(ceph_debugfs_init); 394 EXPORT_SYMBOL(ceph_debugfs_cleanup); 395