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 %d flags 0x%x\n", map->epoch, map->flags); 66 67 for (n = rb_first(&map->pg_pools); n; n = rb_next(n)) { 68 struct ceph_pg_pool_info *pi = 69 rb_entry(n, struct ceph_pg_pool_info, node); 70 71 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", 72 pi->id, pi->name, pi->type, pi->size, pi->min_size, 73 pi->pg_num, pi->pg_num_mask, pi->flags, 74 pi->last_force_request_resend, pi->read_tier, 75 pi->write_tier); 76 } 77 for (i = 0; i < map->max_osd; i++) { 78 struct ceph_entity_addr *addr = &map->osd_addr[i]; 79 int state = map->osd_state[i]; 80 char sb[64]; 81 82 seq_printf(s, "osd%d\t%s\t%3d%%\t(%s)\t%3d%%\n", 83 i, ceph_pr_addr(&addr->in_addr), 84 ((map->osd_weight[i]*100) >> 16), 85 ceph_osdmap_state_str(sb, sizeof(sb), state), 86 ((ceph_get_primary_affinity(map, i)*100) >> 16)); 87 } 88 for (n = rb_first(&map->pg_temp); n; n = rb_next(n)) { 89 struct ceph_pg_mapping *pg = 90 rb_entry(n, struct ceph_pg_mapping, node); 91 92 seq_printf(s, "pg_temp %llu.%x [", pg->pgid.pool, 93 pg->pgid.seed); 94 for (i = 0; i < pg->pg_temp.len; i++) 95 seq_printf(s, "%s%d", (i == 0 ? "" : ","), 96 pg->pg_temp.osds[i]); 97 seq_printf(s, "]\n"); 98 } 99 for (n = rb_first(&map->primary_temp); n; n = rb_next(n)) { 100 struct ceph_pg_mapping *pg = 101 rb_entry(n, struct ceph_pg_mapping, node); 102 103 seq_printf(s, "primary_temp %llu.%x %d\n", pg->pgid.pool, 104 pg->pgid.seed, pg->primary_temp.osd); 105 } 106 107 up_read(&osdc->lock); 108 return 0; 109 } 110 111 static int monc_show(struct seq_file *s, void *p) 112 { 113 struct ceph_client *client = s->private; 114 struct ceph_mon_generic_request *req; 115 struct ceph_mon_client *monc = &client->monc; 116 struct rb_node *rp; 117 int i; 118 119 mutex_lock(&monc->mutex); 120 121 for (i = 0; i < ARRAY_SIZE(monc->subs); i++) { 122 seq_printf(s, "have %s %u", ceph_sub_str[i], 123 monc->subs[i].have); 124 if (monc->subs[i].want) 125 seq_printf(s, " want %llu%s", 126 le64_to_cpu(monc->subs[i].item.start), 127 (monc->subs[i].item.flags & 128 CEPH_SUBSCRIBE_ONETIME ? "" : "+")); 129 seq_putc(s, '\n'); 130 } 131 seq_printf(s, "fs_cluster_id %d\n", monc->fs_cluster_id); 132 133 for (rp = rb_first(&monc->generic_request_tree); rp; rp = rb_next(rp)) { 134 __u16 op; 135 req = rb_entry(rp, struct ceph_mon_generic_request, node); 136 op = le16_to_cpu(req->request->hdr.type); 137 if (op == CEPH_MSG_STATFS) 138 seq_printf(s, "%llu statfs\n", req->tid); 139 else if (op == CEPH_MSG_MON_GET_VERSION) 140 seq_printf(s, "%llu mon_get_version", req->tid); 141 else 142 seq_printf(s, "%llu unknown\n", req->tid); 143 } 144 145 mutex_unlock(&monc->mutex); 146 return 0; 147 } 148 149 static void dump_target(struct seq_file *s, struct ceph_osd_request_target *t) 150 { 151 int i; 152 153 seq_printf(s, "osd%d\t%llu.%x\t[", t->osd, t->pgid.pool, t->pgid.seed); 154 for (i = 0; i < t->up.size; i++) 155 seq_printf(s, "%s%d", (!i ? "" : ","), t->up.osds[i]); 156 seq_printf(s, "]/%d\t[", t->up.primary); 157 for (i = 0; i < t->acting.size; i++) 158 seq_printf(s, "%s%d", (!i ? "" : ","), t->acting.osds[i]); 159 seq_printf(s, "]/%d\t%*pE\t0x%x", t->acting.primary, 160 t->target_oid.name_len, t->target_oid.name, t->flags); 161 if (t->paused) 162 seq_puts(s, "\tP"); 163 } 164 165 static void dump_request(struct seq_file *s, struct ceph_osd_request *req) 166 { 167 int i; 168 169 seq_printf(s, "%llu\t", req->r_tid); 170 dump_target(s, &req->r_t); 171 172 seq_printf(s, "\t%d\t%u'%llu", req->r_attempts, 173 le32_to_cpu(req->r_replay_version.epoch), 174 le64_to_cpu(req->r_replay_version.version)); 175 176 for (i = 0; i < req->r_num_ops; i++) { 177 struct ceph_osd_req_op *op = &req->r_ops[i]; 178 179 seq_printf(s, "%s%s", (i == 0 ? "\t" : ","), 180 ceph_osd_op_name(op->op)); 181 if (op->op == CEPH_OSD_OP_WATCH) 182 seq_printf(s, "-%s", 183 ceph_osd_watch_op_name(op->watch.op)); 184 } 185 186 seq_putc(s, '\n'); 187 } 188 189 static void dump_requests(struct seq_file *s, struct ceph_osd *osd) 190 { 191 struct rb_node *n; 192 193 mutex_lock(&osd->lock); 194 for (n = rb_first(&osd->o_requests); n; n = rb_next(n)) { 195 struct ceph_osd_request *req = 196 rb_entry(n, struct ceph_osd_request, r_node); 197 198 dump_request(s, req); 199 } 200 201 mutex_unlock(&osd->lock); 202 } 203 204 static void dump_linger_request(struct seq_file *s, 205 struct ceph_osd_linger_request *lreq) 206 { 207 seq_printf(s, "%llu\t", lreq->linger_id); 208 dump_target(s, &lreq->t); 209 210 seq_printf(s, "\t%u\t%s%s/%d\n", lreq->register_gen, 211 lreq->is_watch ? "W" : "N", lreq->committed ? "C" : "", 212 lreq->last_error); 213 } 214 215 static void dump_linger_requests(struct seq_file *s, struct ceph_osd *osd) 216 { 217 struct rb_node *n; 218 219 mutex_lock(&osd->lock); 220 for (n = rb_first(&osd->o_linger_requests); n; n = rb_next(n)) { 221 struct ceph_osd_linger_request *lreq = 222 rb_entry(n, struct ceph_osd_linger_request, node); 223 224 dump_linger_request(s, lreq); 225 } 226 227 mutex_unlock(&osd->lock); 228 } 229 230 static int osdc_show(struct seq_file *s, void *pp) 231 { 232 struct ceph_client *client = s->private; 233 struct ceph_osd_client *osdc = &client->osdc; 234 struct rb_node *n; 235 236 down_read(&osdc->lock); 237 seq_printf(s, "REQUESTS %d homeless %d\n", 238 atomic_read(&osdc->num_requests), 239 atomic_read(&osdc->num_homeless)); 240 for (n = rb_first(&osdc->osds); n; n = rb_next(n)) { 241 struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); 242 243 dump_requests(s, osd); 244 } 245 dump_requests(s, &osdc->homeless_osd); 246 247 seq_puts(s, "LINGER REQUESTS\n"); 248 for (n = rb_first(&osdc->osds); n; n = rb_next(n)) { 249 struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); 250 251 dump_linger_requests(s, osd); 252 } 253 dump_linger_requests(s, &osdc->homeless_osd); 254 255 up_read(&osdc->lock); 256 return 0; 257 } 258 259 static int client_options_show(struct seq_file *s, void *p) 260 { 261 struct ceph_client *client = s->private; 262 int ret; 263 264 ret = ceph_print_client_options(s, client); 265 if (ret) 266 return ret; 267 268 seq_putc(s, '\n'); 269 return 0; 270 } 271 272 CEPH_DEFINE_SHOW_FUNC(monmap_show) 273 CEPH_DEFINE_SHOW_FUNC(osdmap_show) 274 CEPH_DEFINE_SHOW_FUNC(monc_show) 275 CEPH_DEFINE_SHOW_FUNC(osdc_show) 276 CEPH_DEFINE_SHOW_FUNC(client_options_show) 277 278 int ceph_debugfs_init(void) 279 { 280 ceph_debugfs_dir = debugfs_create_dir("ceph", NULL); 281 if (!ceph_debugfs_dir) 282 return -ENOMEM; 283 return 0; 284 } 285 286 void ceph_debugfs_cleanup(void) 287 { 288 debugfs_remove(ceph_debugfs_dir); 289 } 290 291 int ceph_debugfs_client_init(struct ceph_client *client) 292 { 293 int ret = -ENOMEM; 294 char name[80]; 295 296 snprintf(name, sizeof(name), "%pU.client%lld", &client->fsid, 297 client->monc.auth->global_id); 298 299 dout("ceph_debugfs_client_init %p %s\n", client, name); 300 301 BUG_ON(client->debugfs_dir); 302 client->debugfs_dir = debugfs_create_dir(name, ceph_debugfs_dir); 303 if (!client->debugfs_dir) 304 goto out; 305 306 client->monc.debugfs_file = debugfs_create_file("monc", 307 0600, 308 client->debugfs_dir, 309 client, 310 &monc_show_fops); 311 if (!client->monc.debugfs_file) 312 goto out; 313 314 client->osdc.debugfs_file = debugfs_create_file("osdc", 315 0600, 316 client->debugfs_dir, 317 client, 318 &osdc_show_fops); 319 if (!client->osdc.debugfs_file) 320 goto out; 321 322 client->debugfs_monmap = debugfs_create_file("monmap", 323 0600, 324 client->debugfs_dir, 325 client, 326 &monmap_show_fops); 327 if (!client->debugfs_monmap) 328 goto out; 329 330 client->debugfs_osdmap = debugfs_create_file("osdmap", 331 0600, 332 client->debugfs_dir, 333 client, 334 &osdmap_show_fops); 335 if (!client->debugfs_osdmap) 336 goto out; 337 338 client->debugfs_options = debugfs_create_file("client_options", 339 0600, 340 client->debugfs_dir, 341 client, 342 &client_options_show_fops); 343 if (!client->debugfs_options) 344 goto out; 345 346 return 0; 347 348 out: 349 ceph_debugfs_client_cleanup(client); 350 return ret; 351 } 352 353 void ceph_debugfs_client_cleanup(struct ceph_client *client) 354 { 355 dout("ceph_debugfs_client_cleanup %p\n", client); 356 debugfs_remove(client->debugfs_options); 357 debugfs_remove(client->debugfs_osdmap); 358 debugfs_remove(client->debugfs_monmap); 359 debugfs_remove(client->osdc.debugfs_file); 360 debugfs_remove(client->monc.debugfs_file); 361 debugfs_remove(client->debugfs_dir); 362 } 363 364 #else /* CONFIG_DEBUG_FS */ 365 366 int ceph_debugfs_init(void) 367 { 368 return 0; 369 } 370 371 void ceph_debugfs_cleanup(void) 372 { 373 } 374 375 int ceph_debugfs_client_init(struct ceph_client *client) 376 { 377 return 0; 378 } 379 380 void ceph_debugfs_client_cleanup(struct ceph_client *client) 381 { 382 } 383 384 #endif /* CONFIG_DEBUG_FS */ 385 386 EXPORT_SYMBOL(ceph_debugfs_init); 387 EXPORT_SYMBOL(ceph_debugfs_cleanup); 388