Sage Weil | 76aa844 | 2009-10-06 11:31:14 -0700 | [diff] [blame^] | 1 | #include "ceph_debug.h" |
| 2 | |
| 3 | #include <linux/module.h> |
| 4 | #include <linux/ctype.h> |
| 5 | #include <linux/debugfs.h> |
| 6 | #include <linux/seq_file.h> |
| 7 | |
| 8 | #include "super.h" |
| 9 | #include "mds_client.h" |
| 10 | |
| 11 | /* |
| 12 | * Implement /sys/kernel/debug/ceph fun |
| 13 | * |
| 14 | * /sys/kernel/debug/ceph/client* - an instance of the ceph client |
| 15 | * .../osdmap - current osdmap |
| 16 | * .../mdsmap - current mdsmap |
| 17 | * .../monmap - current monmap |
| 18 | * .../osdc - active osd requests |
| 19 | * .../mdsc - active mds requests |
| 20 | * .../monc - mon client state |
| 21 | * .../dentry_lru - dump contents of dentry lru |
| 22 | * .../caps - expose cap (reservation) stats |
| 23 | */ |
| 24 | |
| 25 | static struct dentry *ceph_debugfs_dir; |
| 26 | |
| 27 | static int monmap_show(struct seq_file *s, void *p) |
| 28 | { |
| 29 | int i; |
| 30 | struct ceph_client *client = s->private; |
| 31 | |
| 32 | if (client->monc.monmap == NULL) |
| 33 | return 0; |
| 34 | |
| 35 | seq_printf(s, "epoch %d\n", client->monc.monmap->epoch); |
| 36 | for (i = 0; i < client->monc.monmap->num_mon; i++) { |
| 37 | struct ceph_entity_inst *inst = |
| 38 | &client->monc.monmap->mon_inst[i]; |
| 39 | |
| 40 | seq_printf(s, "\t%s%lld\t%s\n", |
| 41 | ENTITY_NAME(inst->name), |
| 42 | pr_addr(&inst->addr.in_addr)); |
| 43 | } |
| 44 | return 0; |
| 45 | } |
| 46 | |
| 47 | static int mdsmap_show(struct seq_file *s, void *p) |
| 48 | { |
| 49 | int i; |
| 50 | struct ceph_client *client = s->private; |
| 51 | |
| 52 | if (client->mdsc.mdsmap == NULL) |
| 53 | return 0; |
| 54 | seq_printf(s, "epoch %d\n", client->mdsc.mdsmap->m_epoch); |
| 55 | seq_printf(s, "root %d\n", client->mdsc.mdsmap->m_root); |
| 56 | seq_printf(s, "session_timeout %d\n", |
| 57 | client->mdsc.mdsmap->m_session_timeout); |
| 58 | seq_printf(s, "session_autoclose %d\n", |
| 59 | client->mdsc.mdsmap->m_session_autoclose); |
| 60 | for (i = 0; i < client->mdsc.mdsmap->m_max_mds; i++) { |
| 61 | struct ceph_entity_addr *addr = |
| 62 | &client->mdsc.mdsmap->m_info[i].addr; |
| 63 | int state = client->mdsc.mdsmap->m_info[i].state; |
| 64 | |
| 65 | seq_printf(s, "\tmds%d\t%s\t(%s)\n", i, pr_addr(&addr->in_addr), |
| 66 | ceph_mds_state_name(state)); |
| 67 | } |
| 68 | return 0; |
| 69 | } |
| 70 | |
| 71 | static int osdmap_show(struct seq_file *s, void *p) |
| 72 | { |
| 73 | int i; |
| 74 | struct ceph_client *client = s->private; |
| 75 | |
| 76 | if (client->osdc.osdmap == NULL) |
| 77 | return 0; |
| 78 | seq_printf(s, "epoch %d\n", client->osdc.osdmap->epoch); |
| 79 | seq_printf(s, "flags%s%s\n", |
| 80 | (client->osdc.osdmap->flags & CEPH_OSDMAP_NEARFULL) ? |
| 81 | " NEARFULL" : "", |
| 82 | (client->osdc.osdmap->flags & CEPH_OSDMAP_FULL) ? |
| 83 | " FULL" : ""); |
| 84 | for (i = 0; i < client->osdc.osdmap->num_pools; i++) { |
| 85 | struct ceph_pg_pool_info *pool = |
| 86 | &client->osdc.osdmap->pg_pool[i]; |
| 87 | seq_printf(s, "pg_pool %d pg_num %d / %d, lpg_num %d / %d\n", |
| 88 | i, pool->v.pg_num, pool->pg_num_mask, |
| 89 | pool->v.lpg_num, pool->lpg_num_mask); |
| 90 | } |
| 91 | for (i = 0; i < client->osdc.osdmap->max_osd; i++) { |
| 92 | struct ceph_entity_addr *addr = |
| 93 | &client->osdc.osdmap->osd_addr[i]; |
| 94 | int state = client->osdc.osdmap->osd_state[i]; |
| 95 | char sb[64]; |
| 96 | |
| 97 | seq_printf(s, "\tosd%d\t%s\t%3d%%\t(%s)\n", |
| 98 | i, pr_addr(&addr->in_addr), |
| 99 | ((client->osdc.osdmap->osd_weight[i]*100) >> 16), |
| 100 | ceph_osdmap_state_str(sb, sizeof(sb), state)); |
| 101 | } |
| 102 | return 0; |
| 103 | } |
| 104 | |
| 105 | static int monc_show(struct seq_file *s, void *p) |
| 106 | { |
| 107 | struct ceph_client *client = s->private; |
| 108 | struct ceph_mon_statfs_request *req; |
| 109 | u64 nexttid = 0; |
| 110 | int got; |
| 111 | struct ceph_mon_client *monc = &client->monc; |
| 112 | |
| 113 | mutex_lock(&monc->mutex); |
| 114 | |
| 115 | if (monc->have_mdsmap) |
| 116 | seq_printf(s, "have mdsmap %u\n", (unsigned)monc->have_mdsmap); |
| 117 | if (monc->have_osdmap) |
| 118 | seq_printf(s, "have osdmap %u\n", (unsigned)monc->have_osdmap); |
| 119 | if (monc->want_next_osdmap) |
| 120 | seq_printf(s, "want next osdmap\n"); |
| 121 | |
| 122 | while (nexttid < monc->last_tid) { |
| 123 | got = radix_tree_gang_lookup(&monc->statfs_request_tree, |
| 124 | (void **)&req, nexttid, 1); |
| 125 | if (got == 0) |
| 126 | break; |
| 127 | nexttid = req->tid + 1; |
| 128 | |
| 129 | seq_printf(s, "%lld statfs\n", req->tid); |
| 130 | } |
| 131 | mutex_unlock(&monc->mutex); |
| 132 | |
| 133 | return 0; |
| 134 | } |
| 135 | |
| 136 | static int mdsc_show(struct seq_file *s, void *p) |
| 137 | { |
| 138 | struct ceph_client *client = s->private; |
| 139 | struct ceph_mds_request *req; |
| 140 | u64 nexttid = 0; |
| 141 | int got; |
| 142 | struct ceph_mds_client *mdsc = &client->mdsc; |
| 143 | int pathlen; |
| 144 | u64 pathbase; |
| 145 | char *path; |
| 146 | |
| 147 | mutex_lock(&mdsc->mutex); |
| 148 | while (nexttid < mdsc->last_tid) { |
| 149 | got = radix_tree_gang_lookup(&mdsc->request_tree, |
| 150 | (void **)&req, nexttid, 1); |
| 151 | if (got == 0) |
| 152 | break; |
| 153 | nexttid = req->r_tid + 1; |
| 154 | |
| 155 | if (req->r_request) |
| 156 | seq_printf(s, "%lld\tmds%d\t", req->r_tid, req->r_mds); |
| 157 | else |
| 158 | seq_printf(s, "%lld\t(no request)\t", req->r_tid); |
| 159 | |
| 160 | seq_printf(s, "%s", ceph_mds_op_name(req->r_op)); |
| 161 | |
| 162 | if (req->r_got_unsafe) |
| 163 | seq_printf(s, "\t(unsafe)"); |
| 164 | else |
| 165 | seq_printf(s, "\t"); |
| 166 | |
| 167 | if (req->r_inode) { |
| 168 | seq_printf(s, " #%llx", ceph_ino(req->r_inode)); |
| 169 | } else if (req->r_dentry) { |
| 170 | path = ceph_mdsc_build_path(req->r_dentry, &pathlen, |
| 171 | &pathbase, 0); |
| 172 | spin_lock(&req->r_dentry->d_lock); |
| 173 | seq_printf(s, " #%llx/%.*s (%s)", |
| 174 | ceph_ino(req->r_dentry->d_parent->d_inode), |
| 175 | req->r_dentry->d_name.len, |
| 176 | req->r_dentry->d_name.name, |
| 177 | path ? path : ""); |
| 178 | spin_unlock(&req->r_dentry->d_lock); |
| 179 | kfree(path); |
| 180 | } else if (req->r_path1) { |
| 181 | seq_printf(s, " #%llx/%s", req->r_ino1.ino, |
| 182 | req->r_path1); |
| 183 | } |
| 184 | |
| 185 | if (req->r_old_dentry) { |
| 186 | path = ceph_mdsc_build_path(req->r_old_dentry, &pathlen, |
| 187 | &pathbase, 0); |
| 188 | spin_lock(&req->r_old_dentry->d_lock); |
| 189 | seq_printf(s, " #%llx/%.*s (%s)", |
| 190 | ceph_ino(req->r_old_dentry->d_parent->d_inode), |
| 191 | req->r_old_dentry->d_name.len, |
| 192 | req->r_old_dentry->d_name.name, |
| 193 | path ? path : ""); |
| 194 | spin_unlock(&req->r_old_dentry->d_lock); |
| 195 | kfree(path); |
| 196 | } else if (req->r_path2) { |
| 197 | if (req->r_ino2.ino) |
| 198 | seq_printf(s, " #%llx/%s", req->r_ino2.ino, |
| 199 | req->r_path2); |
| 200 | else |
| 201 | seq_printf(s, " %s", req->r_path2); |
| 202 | } |
| 203 | |
| 204 | seq_printf(s, "\n"); |
| 205 | } |
| 206 | mutex_unlock(&mdsc->mutex); |
| 207 | |
| 208 | return 0; |
| 209 | } |
| 210 | |
| 211 | static int osdc_show(struct seq_file *s, void *pp) |
| 212 | { |
| 213 | struct ceph_client *client = s->private; |
| 214 | struct ceph_osd_client *osdc = &client->osdc; |
| 215 | struct rb_node *p; |
| 216 | |
| 217 | mutex_lock(&osdc->request_mutex); |
| 218 | for (p = rb_first(&osdc->requests); p; p = rb_next(p)) { |
| 219 | struct ceph_osd_request *req; |
| 220 | struct ceph_osd_request_head *head; |
| 221 | struct ceph_osd_op *op; |
| 222 | int num_ops; |
| 223 | int opcode, olen; |
| 224 | int i; |
| 225 | |
| 226 | req = rb_entry(p, struct ceph_osd_request, r_node); |
| 227 | |
| 228 | seq_printf(s, "%lld\tosd%d\t", req->r_tid, |
| 229 | req->r_osd ? req->r_osd->o_osd : -1); |
| 230 | |
| 231 | head = req->r_request->front.iov_base; |
| 232 | op = (void *)(head + 1); |
| 233 | |
| 234 | num_ops = le16_to_cpu(head->num_ops); |
| 235 | olen = le32_to_cpu(head->object_len); |
| 236 | seq_printf(s, "%.*s", olen, |
| 237 | (const char *)(head->ops + num_ops)); |
| 238 | |
| 239 | if (req->r_reassert_version.epoch) |
| 240 | seq_printf(s, "\t%u'%llu", |
| 241 | (unsigned)le32_to_cpu(req->r_reassert_version.epoch), |
| 242 | le64_to_cpu(req->r_reassert_version.version)); |
| 243 | else |
| 244 | seq_printf(s, "\t"); |
| 245 | |
| 246 | for (i = 0; i < num_ops; i++) { |
| 247 | opcode = le16_to_cpu(op->op); |
| 248 | seq_printf(s, "\t%s", ceph_osd_op_name(opcode)); |
| 249 | op++; |
| 250 | } |
| 251 | |
| 252 | seq_printf(s, "\n"); |
| 253 | } |
| 254 | mutex_unlock(&osdc->request_mutex); |
| 255 | return 0; |
| 256 | } |
| 257 | |
| 258 | static int caps_show(struct seq_file *s, void *p) |
| 259 | { |
| 260 | struct ceph_client *client = p; |
| 261 | int total, avail, used, reserved; |
| 262 | |
| 263 | ceph_reservation_status(client, &total, &avail, &used, &reserved); |
| 264 | seq_printf(s, "total\t\t%d\n" |
| 265 | "avail\t\t%d\n" |
| 266 | "used\t\t%d\n" |
| 267 | "reserved\t%d\n", |
| 268 | total, avail, used, reserved); |
| 269 | return 0; |
| 270 | } |
| 271 | |
| 272 | static int dentry_lru_show(struct seq_file *s, void *ptr) |
| 273 | { |
| 274 | struct ceph_client *client = s->private; |
| 275 | struct ceph_mds_client *mdsc = &client->mdsc; |
| 276 | struct ceph_dentry_info *di; |
| 277 | |
| 278 | spin_lock(&mdsc->dentry_lru_lock); |
| 279 | list_for_each_entry(di, &mdsc->dentry_lru, lru) { |
| 280 | struct dentry *dentry = di->dentry; |
| 281 | seq_printf(s, "%p %p\t%.*s\n", |
| 282 | di, dentry, dentry->d_name.len, dentry->d_name.name); |
| 283 | } |
| 284 | spin_unlock(&mdsc->dentry_lru_lock); |
| 285 | |
| 286 | return 0; |
| 287 | } |
| 288 | |
| 289 | #define DEFINE_SHOW_FUNC(name) \ |
| 290 | static int name##_open(struct inode *inode, struct file *file) \ |
| 291 | { \ |
| 292 | struct seq_file *sf; \ |
| 293 | int ret; \ |
| 294 | \ |
| 295 | ret = single_open(file, name, NULL); \ |
| 296 | sf = file->private_data; \ |
| 297 | sf->private = inode->i_private; \ |
| 298 | return ret; \ |
| 299 | } \ |
| 300 | \ |
| 301 | static const struct file_operations name##_fops = { \ |
| 302 | .open = name##_open, \ |
| 303 | .read = seq_read, \ |
| 304 | .llseek = seq_lseek, \ |
| 305 | .release = single_release, \ |
| 306 | }; |
| 307 | |
| 308 | DEFINE_SHOW_FUNC(monmap_show) |
| 309 | DEFINE_SHOW_FUNC(mdsmap_show) |
| 310 | DEFINE_SHOW_FUNC(osdmap_show) |
| 311 | DEFINE_SHOW_FUNC(monc_show) |
| 312 | DEFINE_SHOW_FUNC(mdsc_show) |
| 313 | DEFINE_SHOW_FUNC(osdc_show) |
| 314 | DEFINE_SHOW_FUNC(dentry_lru_show) |
| 315 | DEFINE_SHOW_FUNC(caps_show) |
| 316 | |
| 317 | int __init ceph_debugfs_init(void) |
| 318 | { |
| 319 | ceph_debugfs_dir = debugfs_create_dir("ceph", NULL); |
| 320 | if (!ceph_debugfs_dir) |
| 321 | return -ENOMEM; |
| 322 | return 0; |
| 323 | } |
| 324 | |
| 325 | void ceph_debugfs_cleanup(void) |
| 326 | { |
| 327 | debugfs_remove(ceph_debugfs_dir); |
| 328 | } |
| 329 | |
| 330 | int ceph_debugfs_client_init(struct ceph_client *client) |
| 331 | { |
| 332 | int ret = 0; |
| 333 | char name[80]; |
| 334 | |
| 335 | snprintf(name, sizeof(name), FSID_FORMAT ".client%lld", |
| 336 | PR_FSID(&client->monc.monmap->fsid), client->whoami); |
| 337 | |
| 338 | client->debugfs_dir = debugfs_create_dir(name, ceph_debugfs_dir); |
| 339 | if (!client->debugfs_dir) |
| 340 | goto out; |
| 341 | |
| 342 | client->monc.debugfs_file = debugfs_create_file("monc", |
| 343 | 0600, |
| 344 | client->debugfs_dir, |
| 345 | client, |
| 346 | &monc_show_fops); |
| 347 | if (!client->monc.debugfs_file) |
| 348 | goto out; |
| 349 | |
| 350 | client->mdsc.debugfs_file = debugfs_create_file("mdsc", |
| 351 | 0600, |
| 352 | client->debugfs_dir, |
| 353 | client, |
| 354 | &mdsc_show_fops); |
| 355 | if (!client->mdsc.debugfs_file) |
| 356 | goto out; |
| 357 | |
| 358 | client->osdc.debugfs_file = debugfs_create_file("osdc", |
| 359 | 0600, |
| 360 | client->debugfs_dir, |
| 361 | client, |
| 362 | &osdc_show_fops); |
| 363 | if (!client->osdc.debugfs_file) |
| 364 | goto out; |
| 365 | |
| 366 | client->debugfs_monmap = debugfs_create_file("monmap", |
| 367 | 0600, |
| 368 | client->debugfs_dir, |
| 369 | client, |
| 370 | &monmap_show_fops); |
| 371 | if (!client->debugfs_monmap) |
| 372 | goto out; |
| 373 | |
| 374 | client->debugfs_mdsmap = debugfs_create_file("mdsmap", |
| 375 | 0600, |
| 376 | client->debugfs_dir, |
| 377 | client, |
| 378 | &mdsmap_show_fops); |
| 379 | if (!client->debugfs_mdsmap) |
| 380 | goto out; |
| 381 | |
| 382 | client->debugfs_osdmap = debugfs_create_file("osdmap", |
| 383 | 0600, |
| 384 | client->debugfs_dir, |
| 385 | client, |
| 386 | &osdmap_show_fops); |
| 387 | if (!client->debugfs_osdmap) |
| 388 | goto out; |
| 389 | |
| 390 | client->debugfs_dentry_lru = debugfs_create_file("dentry_lru", |
| 391 | 0600, |
| 392 | client->debugfs_dir, |
| 393 | client, |
| 394 | &dentry_lru_show_fops); |
| 395 | if (!client->debugfs_dentry_lru) |
| 396 | goto out; |
| 397 | |
| 398 | client->debugfs_caps = debugfs_create_file("caps", |
| 399 | 0400, |
| 400 | client->debugfs_dir, |
| 401 | client, |
| 402 | &caps_show_fops); |
| 403 | if (!client->debugfs_caps) |
| 404 | goto out; |
| 405 | |
| 406 | return 0; |
| 407 | |
| 408 | out: |
| 409 | ceph_debugfs_client_cleanup(client); |
| 410 | return ret; |
| 411 | } |
| 412 | |
| 413 | void ceph_debugfs_client_cleanup(struct ceph_client *client) |
| 414 | { |
| 415 | debugfs_remove(client->debugfs_caps); |
| 416 | debugfs_remove(client->debugfs_dentry_lru); |
| 417 | debugfs_remove(client->debugfs_osdmap); |
| 418 | debugfs_remove(client->debugfs_mdsmap); |
| 419 | debugfs_remove(client->debugfs_monmap); |
| 420 | debugfs_remove(client->osdc.debugfs_file); |
| 421 | debugfs_remove(client->mdsc.debugfs_file); |
| 422 | debugfs_remove(client->monc.debugfs_file); |
| 423 | debugfs_remove(client->debugfs_dir); |
| 424 | } |
| 425 | |