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; 115 116 mutex_lock(&monc->mutex); 117 118 if (monc->have_mdsmap) 119 seq_printf(s, "have mdsmap %u\n", (unsigned int)monc->have_mdsmap); 120 if (monc->have_osdmap) 121 seq_printf(s, "have osdmap %u\n", (unsigned int)monc->have_osdmap); 122 if (monc->want_next_osdmap) 123 seq_printf(s, "want next osdmap\n"); 124 125 for (rp = rb_first(&monc->generic_request_tree); rp; rp = rb_next(rp)) { 126 __u16 op; 127 req = rb_entry(rp, struct ceph_mon_generic_request, node); 128 op = le16_to_cpu(req->request->hdr.type); 129 if (op == CEPH_MSG_STATFS) 130 seq_printf(s, "%llu statfs\n", req->tid); 131 else if (op == CEPH_MSG_MON_GET_VERSION) 132 seq_printf(s, "%llu mon_get_version", req->tid); 133 else 134 seq_printf(s, "%llu unknown\n", req->tid); 135 } 136 137 mutex_unlock(&monc->mutex); 138 return 0; 139 } 140 141 static int osdc_show(struct seq_file *s, void *pp) 142 { 143 struct ceph_client *client = s->private; 144 struct ceph_osd_client *osdc = &client->osdc; 145 struct rb_node *p; 146 147 mutex_lock(&osdc->request_mutex); 148 for (p = rb_first(&osdc->requests); p; p = rb_next(p)) { 149 struct ceph_osd_request *req; 150 unsigned int i; 151 int opcode; 152 153 req = rb_entry(p, struct ceph_osd_request, r_node); 154 155 seq_printf(s, "%lld\tosd%d\t%lld.%x\t", req->r_tid, 156 req->r_osd ? req->r_osd->o_osd : -1, 157 req->r_pgid.pool, req->r_pgid.seed); 158 159 seq_printf(s, "%.*s", req->r_base_oid.name_len, 160 req->r_base_oid.name); 161 162 if (req->r_reassert_version.epoch) 163 seq_printf(s, "\t%u'%llu", 164 (unsigned int)le32_to_cpu(req->r_reassert_version.epoch), 165 le64_to_cpu(req->r_reassert_version.version)); 166 else 167 seq_printf(s, "\t"); 168 169 for (i = 0; i < req->r_num_ops; i++) { 170 opcode = req->r_ops[i].op; 171 seq_printf(s, "%s%s", (i == 0 ? "\t" : ","), 172 ceph_osd_op_name(opcode)); 173 } 174 175 seq_printf(s, "\n"); 176 } 177 mutex_unlock(&osdc->request_mutex); 178 return 0; 179 } 180 181 static int client_options_show(struct seq_file *s, void *p) 182 { 183 struct ceph_client *client = s->private; 184 int ret; 185 186 ret = ceph_print_client_options(s, client); 187 if (ret) 188 return ret; 189 190 seq_putc(s, '\n'); 191 return 0; 192 } 193 194 CEPH_DEFINE_SHOW_FUNC(monmap_show) 195 CEPH_DEFINE_SHOW_FUNC(osdmap_show) 196 CEPH_DEFINE_SHOW_FUNC(monc_show) 197 CEPH_DEFINE_SHOW_FUNC(osdc_show) 198 CEPH_DEFINE_SHOW_FUNC(client_options_show) 199 200 int ceph_debugfs_init(void) 201 { 202 ceph_debugfs_dir = debugfs_create_dir("ceph", NULL); 203 if (!ceph_debugfs_dir) 204 return -ENOMEM; 205 return 0; 206 } 207 208 void ceph_debugfs_cleanup(void) 209 { 210 debugfs_remove(ceph_debugfs_dir); 211 } 212 213 int ceph_debugfs_client_init(struct ceph_client *client) 214 { 215 int ret = -ENOMEM; 216 char name[80]; 217 218 snprintf(name, sizeof(name), "%pU.client%lld", &client->fsid, 219 client->monc.auth->global_id); 220 221 dout("ceph_debugfs_client_init %p %s\n", client, name); 222 223 BUG_ON(client->debugfs_dir); 224 client->debugfs_dir = debugfs_create_dir(name, ceph_debugfs_dir); 225 if (!client->debugfs_dir) 226 goto out; 227 228 client->monc.debugfs_file = debugfs_create_file("monc", 229 0600, 230 client->debugfs_dir, 231 client, 232 &monc_show_fops); 233 if (!client->monc.debugfs_file) 234 goto out; 235 236 client->osdc.debugfs_file = debugfs_create_file("osdc", 237 0600, 238 client->debugfs_dir, 239 client, 240 &osdc_show_fops); 241 if (!client->osdc.debugfs_file) 242 goto out; 243 244 client->debugfs_monmap = debugfs_create_file("monmap", 245 0600, 246 client->debugfs_dir, 247 client, 248 &monmap_show_fops); 249 if (!client->debugfs_monmap) 250 goto out; 251 252 client->debugfs_osdmap = debugfs_create_file("osdmap", 253 0600, 254 client->debugfs_dir, 255 client, 256 &osdmap_show_fops); 257 if (!client->debugfs_osdmap) 258 goto out; 259 260 client->debugfs_options = debugfs_create_file("client_options", 261 0600, 262 client->debugfs_dir, 263 client, 264 &client_options_show_fops); 265 if (!client->debugfs_options) 266 goto out; 267 268 return 0; 269 270 out: 271 ceph_debugfs_client_cleanup(client); 272 return ret; 273 } 274 275 void ceph_debugfs_client_cleanup(struct ceph_client *client) 276 { 277 dout("ceph_debugfs_client_cleanup %p\n", client); 278 debugfs_remove(client->debugfs_options); 279 debugfs_remove(client->debugfs_osdmap); 280 debugfs_remove(client->debugfs_monmap); 281 debugfs_remove(client->osdc.debugfs_file); 282 debugfs_remove(client->monc.debugfs_file); 283 debugfs_remove(client->debugfs_dir); 284 } 285 286 #else /* CONFIG_DEBUG_FS */ 287 288 int ceph_debugfs_init(void) 289 { 290 return 0; 291 } 292 293 void ceph_debugfs_cleanup(void) 294 { 295 } 296 297 int ceph_debugfs_client_init(struct ceph_client *client) 298 { 299 return 0; 300 } 301 302 void ceph_debugfs_client_cleanup(struct ceph_client *client) 303 { 304 } 305 306 #endif /* CONFIG_DEBUG_FS */ 307 308 EXPORT_SYMBOL(ceph_debugfs_init); 309 EXPORT_SYMBOL(ceph_debugfs_cleanup); 310