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_osdmap *map = client->osdc.osdmap; 58 struct rb_node *n; 59 60 if (map == NULL) 61 return 0; 62 63 seq_printf(s, "epoch %d\n", map->epoch); 64 seq_printf(s, "flags%s%s\n", 65 (map->flags & CEPH_OSDMAP_NEARFULL) ? " NEARFULL" : "", 66 (map->flags & CEPH_OSDMAP_FULL) ? " FULL" : ""); 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 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 } 131 132 for (rp = rb_first(&monc->generic_request_tree); rp; rp = rb_next(rp)) { 133 __u16 op; 134 req = rb_entry(rp, struct ceph_mon_generic_request, node); 135 op = le16_to_cpu(req->request->hdr.type); 136 if (op == CEPH_MSG_STATFS) 137 seq_printf(s, "%llu statfs\n", req->tid); 138 else if (op == CEPH_MSG_MON_GET_VERSION) 139 seq_printf(s, "%llu mon_get_version", req->tid); 140 else 141 seq_printf(s, "%llu unknown\n", req->tid); 142 } 143 144 mutex_unlock(&monc->mutex); 145 return 0; 146 } 147 148 static void dump_target(struct seq_file *s, struct ceph_osd_request_target *t) 149 { 150 int i; 151 152 seq_printf(s, "osd%d\t%llu.%x\t[", t->osd, t->pgid.pool, t->pgid.seed); 153 for (i = 0; i < t->up.size; i++) 154 seq_printf(s, "%s%d", (!i ? "" : ","), t->up.osds[i]); 155 seq_printf(s, "]/%d\t[", t->up.primary); 156 for (i = 0; i < t->acting.size; i++) 157 seq_printf(s, "%s%d", (!i ? "" : ","), t->acting.osds[i]); 158 seq_printf(s, "]/%d\t%*pE\t0x%x", t->acting.primary, 159 t->target_oid.name_len, t->target_oid.name, t->flags); 160 if (t->paused) 161 seq_puts(s, "\tP"); 162 } 163 164 static void dump_request(struct seq_file *s, struct ceph_osd_request *req) 165 { 166 int i; 167 168 seq_printf(s, "%llu\t", req->r_tid); 169 dump_target(s, &req->r_t); 170 171 seq_printf(s, "\t%d\t%u'%llu", req->r_attempts, 172 le32_to_cpu(req->r_replay_version.epoch), 173 le64_to_cpu(req->r_replay_version.version)); 174 175 for (i = 0; i < req->r_num_ops; i++) { 176 struct ceph_osd_req_op *op = &req->r_ops[i]; 177 178 seq_printf(s, "%s%s", (i == 0 ? "\t" : ","), 179 ceph_osd_op_name(op->op)); 180 } 181 182 seq_putc(s, '\n'); 183 } 184 185 static void dump_requests(struct seq_file *s, struct ceph_osd *osd) 186 { 187 struct rb_node *n; 188 189 mutex_lock(&osd->lock); 190 for (n = rb_first(&osd->o_requests); n; n = rb_next(n)) { 191 struct ceph_osd_request *req = 192 rb_entry(n, struct ceph_osd_request, r_node); 193 194 dump_request(s, req); 195 } 196 197 mutex_unlock(&osd->lock); 198 } 199 200 static int osdc_show(struct seq_file *s, void *pp) 201 { 202 struct ceph_client *client = s->private; 203 struct ceph_osd_client *osdc = &client->osdc; 204 struct rb_node *n; 205 206 down_read(&osdc->lock); 207 seq_printf(s, "REQUESTS %d homeless %d\n", 208 atomic_read(&osdc->num_requests), 209 atomic_read(&osdc->num_homeless)); 210 for (n = rb_first(&osdc->osds); n; n = rb_next(n)) { 211 struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); 212 213 dump_requests(s, osd); 214 } 215 dump_requests(s, &osdc->homeless_osd); 216 217 up_read(&osdc->lock); 218 return 0; 219 } 220 221 static int client_options_show(struct seq_file *s, void *p) 222 { 223 struct ceph_client *client = s->private; 224 int ret; 225 226 ret = ceph_print_client_options(s, client); 227 if (ret) 228 return ret; 229 230 seq_putc(s, '\n'); 231 return 0; 232 } 233 234 CEPH_DEFINE_SHOW_FUNC(monmap_show) 235 CEPH_DEFINE_SHOW_FUNC(osdmap_show) 236 CEPH_DEFINE_SHOW_FUNC(monc_show) 237 CEPH_DEFINE_SHOW_FUNC(osdc_show) 238 CEPH_DEFINE_SHOW_FUNC(client_options_show) 239 240 int ceph_debugfs_init(void) 241 { 242 ceph_debugfs_dir = debugfs_create_dir("ceph", NULL); 243 if (!ceph_debugfs_dir) 244 return -ENOMEM; 245 return 0; 246 } 247 248 void ceph_debugfs_cleanup(void) 249 { 250 debugfs_remove(ceph_debugfs_dir); 251 } 252 253 int ceph_debugfs_client_init(struct ceph_client *client) 254 { 255 int ret = -ENOMEM; 256 char name[80]; 257 258 snprintf(name, sizeof(name), "%pU.client%lld", &client->fsid, 259 client->monc.auth->global_id); 260 261 dout("ceph_debugfs_client_init %p %s\n", client, name); 262 263 BUG_ON(client->debugfs_dir); 264 client->debugfs_dir = debugfs_create_dir(name, ceph_debugfs_dir); 265 if (!client->debugfs_dir) 266 goto out; 267 268 client->monc.debugfs_file = debugfs_create_file("monc", 269 0600, 270 client->debugfs_dir, 271 client, 272 &monc_show_fops); 273 if (!client->monc.debugfs_file) 274 goto out; 275 276 client->osdc.debugfs_file = debugfs_create_file("osdc", 277 0600, 278 client->debugfs_dir, 279 client, 280 &osdc_show_fops); 281 if (!client->osdc.debugfs_file) 282 goto out; 283 284 client->debugfs_monmap = debugfs_create_file("monmap", 285 0600, 286 client->debugfs_dir, 287 client, 288 &monmap_show_fops); 289 if (!client->debugfs_monmap) 290 goto out; 291 292 client->debugfs_osdmap = debugfs_create_file("osdmap", 293 0600, 294 client->debugfs_dir, 295 client, 296 &osdmap_show_fops); 297 if (!client->debugfs_osdmap) 298 goto out; 299 300 client->debugfs_options = debugfs_create_file("client_options", 301 0600, 302 client->debugfs_dir, 303 client, 304 &client_options_show_fops); 305 if (!client->debugfs_options) 306 goto out; 307 308 return 0; 309 310 out: 311 ceph_debugfs_client_cleanup(client); 312 return ret; 313 } 314 315 void ceph_debugfs_client_cleanup(struct ceph_client *client) 316 { 317 dout("ceph_debugfs_client_cleanup %p\n", client); 318 debugfs_remove(client->debugfs_options); 319 debugfs_remove(client->debugfs_osdmap); 320 debugfs_remove(client->debugfs_monmap); 321 debugfs_remove(client->osdc.debugfs_file); 322 debugfs_remove(client->monc.debugfs_file); 323 debugfs_remove(client->debugfs_dir); 324 } 325 326 #else /* CONFIG_DEBUG_FS */ 327 328 int ceph_debugfs_init(void) 329 { 330 return 0; 331 } 332 333 void ceph_debugfs_cleanup(void) 334 { 335 } 336 337 int ceph_debugfs_client_init(struct ceph_client *client) 338 { 339 return 0; 340 } 341 342 void ceph_debugfs_client_cleanup(struct ceph_client *client) 343 { 344 } 345 346 #endif /* CONFIG_DEBUG_FS */ 347 348 EXPORT_SYMBOL(ceph_debugfs_init); 349 EXPORT_SYMBOL(ceph_debugfs_cleanup); 350