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 *pool = 70 rb_entry(n, struct ceph_pg_pool_info, node); 71 72 seq_printf(s, "pool %lld pg_num %u (%d) read_tier %lld write_tier %lld\n", 73 pool->id, pool->pg_num, pool->pg_num_mask, 74 pool->read_tier, pool->write_tier); 75 } 76 for (i = 0; i < map->max_osd; i++) { 77 struct ceph_entity_addr *addr = &map->osd_addr[i]; 78 int state = map->osd_state[i]; 79 char sb[64]; 80 81 seq_printf(s, "osd%d\t%s\t%3d%%\t(%s)\t%3d%%\n", 82 i, ceph_pr_addr(&addr->in_addr), 83 ((map->osd_weight[i]*100) >> 16), 84 ceph_osdmap_state_str(sb, sizeof(sb), state), 85 ((ceph_get_primary_affinity(map, i)*100) >> 16)); 86 } 87 for (n = rb_first(&map->pg_temp); n; n = rb_next(n)) { 88 struct ceph_pg_mapping *pg = 89 rb_entry(n, struct ceph_pg_mapping, node); 90 91 seq_printf(s, "pg_temp %llu.%x [", pg->pgid.pool, 92 pg->pgid.seed); 93 for (i = 0; i < pg->pg_temp.len; i++) 94 seq_printf(s, "%s%d", (i == 0 ? "" : ","), 95 pg->pg_temp.osds[i]); 96 seq_printf(s, "]\n"); 97 } 98 for (n = rb_first(&map->primary_temp); n; n = rb_next(n)) { 99 struct ceph_pg_mapping *pg = 100 rb_entry(n, struct ceph_pg_mapping, node); 101 102 seq_printf(s, "primary_temp %llu.%x %d\n", pg->pgid.pool, 103 pg->pgid.seed, pg->primary_temp.osd); 104 } 105 106 return 0; 107 } 108 109 static int monc_show(struct seq_file *s, void *p) 110 { 111 struct ceph_client *client = s->private; 112 struct ceph_mon_generic_request *req; 113 struct ceph_mon_client *monc = &client->monc; 114 struct rb_node *rp; 115 int i; 116 117 mutex_lock(&monc->mutex); 118 119 for (i = 0; i < ARRAY_SIZE(monc->subs); i++) { 120 seq_printf(s, "have %s %u", ceph_sub_str[i], 121 monc->subs[i].have); 122 if (monc->subs[i].want) 123 seq_printf(s, " want %llu%s", 124 le64_to_cpu(monc->subs[i].item.start), 125 (monc->subs[i].item.flags & 126 CEPH_SUBSCRIBE_ONETIME ? "" : "+")); 127 seq_putc(s, '\n'); 128 } 129 130 for (rp = rb_first(&monc->generic_request_tree); rp; rp = rb_next(rp)) { 131 __u16 op; 132 req = rb_entry(rp, struct ceph_mon_generic_request, node); 133 op = le16_to_cpu(req->request->hdr.type); 134 if (op == CEPH_MSG_STATFS) 135 seq_printf(s, "%llu statfs\n", req->tid); 136 else if (op == CEPH_MSG_MON_GET_VERSION) 137 seq_printf(s, "%llu mon_get_version", req->tid); 138 else 139 seq_printf(s, "%llu unknown\n", req->tid); 140 } 141 142 mutex_unlock(&monc->mutex); 143 return 0; 144 } 145 146 static int osdc_show(struct seq_file *s, void *pp) 147 { 148 struct ceph_client *client = s->private; 149 struct ceph_osd_client *osdc = &client->osdc; 150 struct rb_node *p; 151 152 mutex_lock(&osdc->request_mutex); 153 for (p = rb_first(&osdc->requests); p; p = rb_next(p)) { 154 struct ceph_osd_request *req; 155 unsigned int i; 156 int opcode; 157 158 req = rb_entry(p, struct ceph_osd_request, r_node); 159 160 seq_printf(s, "%lld\tosd%d\t%lld.%x\t", req->r_tid, 161 req->r_osd ? req->r_osd->o_osd : -1, 162 req->r_pgid.pool, req->r_pgid.seed); 163 164 seq_printf(s, "%.*s", req->r_base_oid.name_len, 165 req->r_base_oid.name); 166 167 if (req->r_reassert_version.epoch) 168 seq_printf(s, "\t%u'%llu", 169 (unsigned int)le32_to_cpu(req->r_reassert_version.epoch), 170 le64_to_cpu(req->r_reassert_version.version)); 171 else 172 seq_printf(s, "\t"); 173 174 for (i = 0; i < req->r_num_ops; i++) { 175 opcode = req->r_ops[i].op; 176 seq_printf(s, "%s%s", (i == 0 ? "\t" : ","), 177 ceph_osd_op_name(opcode)); 178 } 179 180 seq_printf(s, "\n"); 181 } 182 mutex_unlock(&osdc->request_mutex); 183 return 0; 184 } 185 186 static int client_options_show(struct seq_file *s, void *p) 187 { 188 struct ceph_client *client = s->private; 189 int ret; 190 191 ret = ceph_print_client_options(s, client); 192 if (ret) 193 return ret; 194 195 seq_putc(s, '\n'); 196 return 0; 197 } 198 199 CEPH_DEFINE_SHOW_FUNC(monmap_show) 200 CEPH_DEFINE_SHOW_FUNC(osdmap_show) 201 CEPH_DEFINE_SHOW_FUNC(monc_show) 202 CEPH_DEFINE_SHOW_FUNC(osdc_show) 203 CEPH_DEFINE_SHOW_FUNC(client_options_show) 204 205 int ceph_debugfs_init(void) 206 { 207 ceph_debugfs_dir = debugfs_create_dir("ceph", NULL); 208 if (!ceph_debugfs_dir) 209 return -ENOMEM; 210 return 0; 211 } 212 213 void ceph_debugfs_cleanup(void) 214 { 215 debugfs_remove(ceph_debugfs_dir); 216 } 217 218 int ceph_debugfs_client_init(struct ceph_client *client) 219 { 220 int ret = -ENOMEM; 221 char name[80]; 222 223 snprintf(name, sizeof(name), "%pU.client%lld", &client->fsid, 224 client->monc.auth->global_id); 225 226 dout("ceph_debugfs_client_init %p %s\n", client, name); 227 228 BUG_ON(client->debugfs_dir); 229 client->debugfs_dir = debugfs_create_dir(name, ceph_debugfs_dir); 230 if (!client->debugfs_dir) 231 goto out; 232 233 client->monc.debugfs_file = debugfs_create_file("monc", 234 0600, 235 client->debugfs_dir, 236 client, 237 &monc_show_fops); 238 if (!client->monc.debugfs_file) 239 goto out; 240 241 client->osdc.debugfs_file = debugfs_create_file("osdc", 242 0600, 243 client->debugfs_dir, 244 client, 245 &osdc_show_fops); 246 if (!client->osdc.debugfs_file) 247 goto out; 248 249 client->debugfs_monmap = debugfs_create_file("monmap", 250 0600, 251 client->debugfs_dir, 252 client, 253 &monmap_show_fops); 254 if (!client->debugfs_monmap) 255 goto out; 256 257 client->debugfs_osdmap = debugfs_create_file("osdmap", 258 0600, 259 client->debugfs_dir, 260 client, 261 &osdmap_show_fops); 262 if (!client->debugfs_osdmap) 263 goto out; 264 265 client->debugfs_options = debugfs_create_file("client_options", 266 0600, 267 client->debugfs_dir, 268 client, 269 &client_options_show_fops); 270 if (!client->debugfs_options) 271 goto out; 272 273 return 0; 274 275 out: 276 ceph_debugfs_client_cleanup(client); 277 return ret; 278 } 279 280 void ceph_debugfs_client_cleanup(struct ceph_client *client) 281 { 282 dout("ceph_debugfs_client_cleanup %p\n", client); 283 debugfs_remove(client->debugfs_options); 284 debugfs_remove(client->debugfs_osdmap); 285 debugfs_remove(client->debugfs_monmap); 286 debugfs_remove(client->osdc.debugfs_file); 287 debugfs_remove(client->monc.debugfs_file); 288 debugfs_remove(client->debugfs_dir); 289 } 290 291 #else /* CONFIG_DEBUG_FS */ 292 293 int ceph_debugfs_init(void) 294 { 295 return 0; 296 } 297 298 void ceph_debugfs_cleanup(void) 299 { 300 } 301 302 int ceph_debugfs_client_init(struct ceph_client *client) 303 { 304 return 0; 305 } 306 307 void ceph_debugfs_client_cleanup(struct ceph_client *client) 308 { 309 } 310 311 #endif /* CONFIG_DEBUG_FS */ 312 313 EXPORT_SYMBOL(ceph_debugfs_init); 314 EXPORT_SYMBOL(ceph_debugfs_cleanup); 315