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76aa844d SW |
1 | #include "ceph_debug.h" |
2 | ||
06edf046 | 3 | #include <linux/device.h> |
76aa844d SW |
4 | #include <linux/module.h> |
5 | #include <linux/ctype.h> | |
6 | #include <linux/debugfs.h> | |
7 | #include <linux/seq_file.h> | |
8 | ||
9 | #include "super.h" | |
10 | #include "mds_client.h" | |
0743304d SW |
11 | #include "mon_client.h" |
12 | #include "auth.h" | |
76aa844d | 13 | |
039934b8 SW |
14 | #ifdef CONFIG_DEBUG_FS |
15 | ||
76aa844d SW |
16 | /* |
17 | * Implement /sys/kernel/debug/ceph fun | |
18 | * | |
19 | * /sys/kernel/debug/ceph/client* - an instance of the ceph client | |
20 | * .../osdmap - current osdmap | |
21 | * .../mdsmap - current mdsmap | |
22 | * .../monmap - current monmap | |
23 | * .../osdc - active osd requests | |
24 | * .../mdsc - active mds requests | |
25 | * .../monc - mon client state | |
26 | * .../dentry_lru - dump contents of dentry lru | |
27 | * .../caps - expose cap (reservation) stats | |
06edf046 | 28 | * .../bdi - symlink to ../../bdi/something |
76aa844d SW |
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 | pr_addr(&inst->addr.in_addr)); | |
49 | } | |
50 | return 0; | |
51 | } | |
52 | ||
53 | static int mdsmap_show(struct seq_file *s, void *p) | |
54 | { | |
55 | int i; | |
56 | struct ceph_client *client = s->private; | |
57 | ||
58 | if (client->mdsc.mdsmap == NULL) | |
59 | return 0; | |
60 | seq_printf(s, "epoch %d\n", client->mdsc.mdsmap->m_epoch); | |
61 | seq_printf(s, "root %d\n", client->mdsc.mdsmap->m_root); | |
62 | seq_printf(s, "session_timeout %d\n", | |
63 | client->mdsc.mdsmap->m_session_timeout); | |
64 | seq_printf(s, "session_autoclose %d\n", | |
65 | client->mdsc.mdsmap->m_session_autoclose); | |
66 | for (i = 0; i < client->mdsc.mdsmap->m_max_mds; i++) { | |
67 | struct ceph_entity_addr *addr = | |
68 | &client->mdsc.mdsmap->m_info[i].addr; | |
69 | int state = client->mdsc.mdsmap->m_info[i].state; | |
70 | ||
71 | seq_printf(s, "\tmds%d\t%s\t(%s)\n", i, pr_addr(&addr->in_addr), | |
72 | ceph_mds_state_name(state)); | |
73 | } | |
74 | return 0; | |
75 | } | |
76 | ||
77 | static int osdmap_show(struct seq_file *s, void *p) | |
78 | { | |
79 | int i; | |
80 | struct ceph_client *client = s->private; | |
81 | ||
82 | if (client->osdc.osdmap == NULL) | |
83 | return 0; | |
84 | seq_printf(s, "epoch %d\n", client->osdc.osdmap->epoch); | |
85 | seq_printf(s, "flags%s%s\n", | |
86 | (client->osdc.osdmap->flags & CEPH_OSDMAP_NEARFULL) ? | |
87 | " NEARFULL" : "", | |
88 | (client->osdc.osdmap->flags & CEPH_OSDMAP_FULL) ? | |
89 | " FULL" : ""); | |
90 | for (i = 0; i < client->osdc.osdmap->num_pools; i++) { | |
91 | struct ceph_pg_pool_info *pool = | |
92 | &client->osdc.osdmap->pg_pool[i]; | |
93 | seq_printf(s, "pg_pool %d pg_num %d / %d, lpg_num %d / %d\n", | |
94 | i, pool->v.pg_num, pool->pg_num_mask, | |
95 | pool->v.lpg_num, pool->lpg_num_mask); | |
96 | } | |
97 | for (i = 0; i < client->osdc.osdmap->max_osd; i++) { | |
98 | struct ceph_entity_addr *addr = | |
99 | &client->osdc.osdmap->osd_addr[i]; | |
100 | int state = client->osdc.osdmap->osd_state[i]; | |
101 | char sb[64]; | |
102 | ||
103 | seq_printf(s, "\tosd%d\t%s\t%3d%%\t(%s)\n", | |
104 | i, pr_addr(&addr->in_addr), | |
105 | ((client->osdc.osdmap->osd_weight[i]*100) >> 16), | |
106 | ceph_osdmap_state_str(sb, sizeof(sb), state)); | |
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_statfs_request *req; | |
115 | u64 nexttid = 0; | |
116 | int got; | |
117 | struct ceph_mon_client *monc = &client->monc; | |
118 | ||
119 | mutex_lock(&monc->mutex); | |
120 | ||
121 | if (monc->have_mdsmap) | |
122 | seq_printf(s, "have mdsmap %u\n", (unsigned)monc->have_mdsmap); | |
123 | if (monc->have_osdmap) | |
124 | seq_printf(s, "have osdmap %u\n", (unsigned)monc->have_osdmap); | |
125 | if (monc->want_next_osdmap) | |
126 | seq_printf(s, "want next osdmap\n"); | |
127 | ||
128 | while (nexttid < monc->last_tid) { | |
129 | got = radix_tree_gang_lookup(&monc->statfs_request_tree, | |
130 | (void **)&req, nexttid, 1); | |
131 | if (got == 0) | |
132 | break; | |
133 | nexttid = req->tid + 1; | |
134 | ||
135 | seq_printf(s, "%lld statfs\n", req->tid); | |
136 | } | |
137 | mutex_unlock(&monc->mutex); | |
138 | ||
139 | return 0; | |
140 | } | |
141 | ||
142 | static int mdsc_show(struct seq_file *s, void *p) | |
143 | { | |
144 | struct ceph_client *client = s->private; | |
145 | struct ceph_mds_request *req; | |
146 | u64 nexttid = 0; | |
147 | int got; | |
148 | struct ceph_mds_client *mdsc = &client->mdsc; | |
149 | int pathlen; | |
150 | u64 pathbase; | |
151 | char *path; | |
152 | ||
153 | mutex_lock(&mdsc->mutex); | |
154 | while (nexttid < mdsc->last_tid) { | |
155 | got = radix_tree_gang_lookup(&mdsc->request_tree, | |
156 | (void **)&req, nexttid, 1); | |
157 | if (got == 0) | |
158 | break; | |
159 | nexttid = req->r_tid + 1; | |
160 | ||
161 | if (req->r_request) | |
162 | seq_printf(s, "%lld\tmds%d\t", req->r_tid, req->r_mds); | |
163 | else | |
164 | seq_printf(s, "%lld\t(no request)\t", req->r_tid); | |
165 | ||
166 | seq_printf(s, "%s", ceph_mds_op_name(req->r_op)); | |
167 | ||
168 | if (req->r_got_unsafe) | |
169 | seq_printf(s, "\t(unsafe)"); | |
170 | else | |
171 | seq_printf(s, "\t"); | |
172 | ||
173 | if (req->r_inode) { | |
174 | seq_printf(s, " #%llx", ceph_ino(req->r_inode)); | |
175 | } else if (req->r_dentry) { | |
176 | path = ceph_mdsc_build_path(req->r_dentry, &pathlen, | |
177 | &pathbase, 0); | |
178 | spin_lock(&req->r_dentry->d_lock); | |
179 | seq_printf(s, " #%llx/%.*s (%s)", | |
180 | ceph_ino(req->r_dentry->d_parent->d_inode), | |
181 | req->r_dentry->d_name.len, | |
182 | req->r_dentry->d_name.name, | |
183 | path ? path : ""); | |
184 | spin_unlock(&req->r_dentry->d_lock); | |
185 | kfree(path); | |
186 | } else if (req->r_path1) { | |
187 | seq_printf(s, " #%llx/%s", req->r_ino1.ino, | |
188 | req->r_path1); | |
189 | } | |
190 | ||
191 | if (req->r_old_dentry) { | |
192 | path = ceph_mdsc_build_path(req->r_old_dentry, &pathlen, | |
193 | &pathbase, 0); | |
194 | spin_lock(&req->r_old_dentry->d_lock); | |
195 | seq_printf(s, " #%llx/%.*s (%s)", | |
196 | ceph_ino(req->r_old_dentry->d_parent->d_inode), | |
197 | req->r_old_dentry->d_name.len, | |
198 | req->r_old_dentry->d_name.name, | |
199 | path ? path : ""); | |
200 | spin_unlock(&req->r_old_dentry->d_lock); | |
201 | kfree(path); | |
202 | } else if (req->r_path2) { | |
203 | if (req->r_ino2.ino) | |
204 | seq_printf(s, " #%llx/%s", req->r_ino2.ino, | |
205 | req->r_path2); | |
206 | else | |
207 | seq_printf(s, " %s", req->r_path2); | |
208 | } | |
209 | ||
210 | seq_printf(s, "\n"); | |
211 | } | |
212 | mutex_unlock(&mdsc->mutex); | |
213 | ||
214 | return 0; | |
215 | } | |
216 | ||
217 | static int osdc_show(struct seq_file *s, void *pp) | |
218 | { | |
219 | struct ceph_client *client = s->private; | |
220 | struct ceph_osd_client *osdc = &client->osdc; | |
221 | struct rb_node *p; | |
222 | ||
223 | mutex_lock(&osdc->request_mutex); | |
224 | for (p = rb_first(&osdc->requests); p; p = rb_next(p)) { | |
225 | struct ceph_osd_request *req; | |
226 | struct ceph_osd_request_head *head; | |
227 | struct ceph_osd_op *op; | |
228 | int num_ops; | |
229 | int opcode, olen; | |
230 | int i; | |
231 | ||
232 | req = rb_entry(p, struct ceph_osd_request, r_node); | |
233 | ||
234 | seq_printf(s, "%lld\tosd%d\t", req->r_tid, | |
235 | req->r_osd ? req->r_osd->o_osd : -1); | |
236 | ||
237 | head = req->r_request->front.iov_base; | |
238 | op = (void *)(head + 1); | |
239 | ||
240 | num_ops = le16_to_cpu(head->num_ops); | |
241 | olen = le32_to_cpu(head->object_len); | |
242 | seq_printf(s, "%.*s", olen, | |
243 | (const char *)(head->ops + num_ops)); | |
244 | ||
245 | if (req->r_reassert_version.epoch) | |
246 | seq_printf(s, "\t%u'%llu", | |
247 | (unsigned)le32_to_cpu(req->r_reassert_version.epoch), | |
248 | le64_to_cpu(req->r_reassert_version.version)); | |
249 | else | |
250 | seq_printf(s, "\t"); | |
251 | ||
252 | for (i = 0; i < num_ops; i++) { | |
253 | opcode = le16_to_cpu(op->op); | |
254 | seq_printf(s, "\t%s", ceph_osd_op_name(opcode)); | |
255 | op++; | |
256 | } | |
257 | ||
258 | seq_printf(s, "\n"); | |
259 | } | |
260 | mutex_unlock(&osdc->request_mutex); | |
261 | return 0; | |
262 | } | |
263 | ||
264 | static int caps_show(struct seq_file *s, void *p) | |
265 | { | |
266 | struct ceph_client *client = p; | |
267 | int total, avail, used, reserved; | |
268 | ||
269 | ceph_reservation_status(client, &total, &avail, &used, &reserved); | |
270 | seq_printf(s, "total\t\t%d\n" | |
271 | "avail\t\t%d\n" | |
272 | "used\t\t%d\n" | |
273 | "reserved\t%d\n", | |
274 | total, avail, used, reserved); | |
275 | return 0; | |
276 | } | |
277 | ||
278 | static int dentry_lru_show(struct seq_file *s, void *ptr) | |
279 | { | |
280 | struct ceph_client *client = s->private; | |
281 | struct ceph_mds_client *mdsc = &client->mdsc; | |
282 | struct ceph_dentry_info *di; | |
283 | ||
284 | spin_lock(&mdsc->dentry_lru_lock); | |
285 | list_for_each_entry(di, &mdsc->dentry_lru, lru) { | |
286 | struct dentry *dentry = di->dentry; | |
287 | seq_printf(s, "%p %p\t%.*s\n", | |
288 | di, dentry, dentry->d_name.len, dentry->d_name.name); | |
289 | } | |
290 | spin_unlock(&mdsc->dentry_lru_lock); | |
291 | ||
292 | return 0; | |
293 | } | |
294 | ||
295 | #define DEFINE_SHOW_FUNC(name) \ | |
296 | static int name##_open(struct inode *inode, struct file *file) \ | |
297 | { \ | |
298 | struct seq_file *sf; \ | |
299 | int ret; \ | |
300 | \ | |
301 | ret = single_open(file, name, NULL); \ | |
302 | sf = file->private_data; \ | |
303 | sf->private = inode->i_private; \ | |
304 | return ret; \ | |
305 | } \ | |
306 | \ | |
307 | static const struct file_operations name##_fops = { \ | |
308 | .open = name##_open, \ | |
309 | .read = seq_read, \ | |
310 | .llseek = seq_lseek, \ | |
311 | .release = single_release, \ | |
312 | }; | |
313 | ||
314 | DEFINE_SHOW_FUNC(monmap_show) | |
315 | DEFINE_SHOW_FUNC(mdsmap_show) | |
316 | DEFINE_SHOW_FUNC(osdmap_show) | |
317 | DEFINE_SHOW_FUNC(monc_show) | |
318 | DEFINE_SHOW_FUNC(mdsc_show) | |
319 | DEFINE_SHOW_FUNC(osdc_show) | |
320 | DEFINE_SHOW_FUNC(dentry_lru_show) | |
321 | DEFINE_SHOW_FUNC(caps_show) | |
322 | ||
323 | int __init ceph_debugfs_init(void) | |
324 | { | |
325 | ceph_debugfs_dir = debugfs_create_dir("ceph", NULL); | |
326 | if (!ceph_debugfs_dir) | |
327 | return -ENOMEM; | |
328 | return 0; | |
329 | } | |
330 | ||
331 | void ceph_debugfs_cleanup(void) | |
332 | { | |
333 | debugfs_remove(ceph_debugfs_dir); | |
334 | } | |
335 | ||
336 | int ceph_debugfs_client_init(struct ceph_client *client) | |
337 | { | |
338 | int ret = 0; | |
339 | char name[80]; | |
340 | ||
341 | snprintf(name, sizeof(name), FSID_FORMAT ".client%lld", | |
0743304d | 342 | PR_FSID(&client->fsid), client->monc.auth->global_id); |
76aa844d SW |
343 | |
344 | client->debugfs_dir = debugfs_create_dir(name, ceph_debugfs_dir); | |
345 | if (!client->debugfs_dir) | |
346 | goto out; | |
347 | ||
348 | client->monc.debugfs_file = debugfs_create_file("monc", | |
349 | 0600, | |
350 | client->debugfs_dir, | |
351 | client, | |
352 | &monc_show_fops); | |
353 | if (!client->monc.debugfs_file) | |
354 | goto out; | |
355 | ||
356 | client->mdsc.debugfs_file = debugfs_create_file("mdsc", | |
357 | 0600, | |
358 | client->debugfs_dir, | |
359 | client, | |
360 | &mdsc_show_fops); | |
361 | if (!client->mdsc.debugfs_file) | |
362 | goto out; | |
363 | ||
364 | client->osdc.debugfs_file = debugfs_create_file("osdc", | |
365 | 0600, | |
366 | client->debugfs_dir, | |
367 | client, | |
368 | &osdc_show_fops); | |
369 | if (!client->osdc.debugfs_file) | |
370 | goto out; | |
371 | ||
372 | client->debugfs_monmap = debugfs_create_file("monmap", | |
373 | 0600, | |
374 | client->debugfs_dir, | |
375 | client, | |
376 | &monmap_show_fops); | |
377 | if (!client->debugfs_monmap) | |
378 | goto out; | |
379 | ||
380 | client->debugfs_mdsmap = debugfs_create_file("mdsmap", | |
381 | 0600, | |
382 | client->debugfs_dir, | |
383 | client, | |
384 | &mdsmap_show_fops); | |
385 | if (!client->debugfs_mdsmap) | |
386 | goto out; | |
387 | ||
388 | client->debugfs_osdmap = debugfs_create_file("osdmap", | |
389 | 0600, | |
390 | client->debugfs_dir, | |
391 | client, | |
392 | &osdmap_show_fops); | |
393 | if (!client->debugfs_osdmap) | |
394 | goto out; | |
395 | ||
396 | client->debugfs_dentry_lru = debugfs_create_file("dentry_lru", | |
397 | 0600, | |
398 | client->debugfs_dir, | |
399 | client, | |
400 | &dentry_lru_show_fops); | |
401 | if (!client->debugfs_dentry_lru) | |
402 | goto out; | |
403 | ||
404 | client->debugfs_caps = debugfs_create_file("caps", | |
405 | 0400, | |
406 | client->debugfs_dir, | |
407 | client, | |
408 | &caps_show_fops); | |
409 | if (!client->debugfs_caps) | |
410 | goto out; | |
411 | ||
06edf046 SW |
412 | sprintf(name, "../../bdi/%s", dev_name(client->sb->s_bdi->dev)); |
413 | client->debugfs_bdi = debugfs_create_symlink("bdi", client->debugfs_dir, | |
414 | name); | |
415 | ||
76aa844d SW |
416 | return 0; |
417 | ||
418 | out: | |
419 | ceph_debugfs_client_cleanup(client); | |
420 | return ret; | |
421 | } | |
422 | ||
423 | void ceph_debugfs_client_cleanup(struct ceph_client *client) | |
424 | { | |
06edf046 | 425 | debugfs_remove(client->debugfs_bdi); |
76aa844d SW |
426 | debugfs_remove(client->debugfs_caps); |
427 | debugfs_remove(client->debugfs_dentry_lru); | |
428 | debugfs_remove(client->debugfs_osdmap); | |
429 | debugfs_remove(client->debugfs_mdsmap); | |
430 | debugfs_remove(client->debugfs_monmap); | |
431 | debugfs_remove(client->osdc.debugfs_file); | |
432 | debugfs_remove(client->mdsc.debugfs_file); | |
433 | debugfs_remove(client->monc.debugfs_file); | |
434 | debugfs_remove(client->debugfs_dir); | |
435 | } | |
436 | ||
039934b8 SW |
437 | #else // CONFIG_DEBUG_FS |
438 | ||
439 | int __init ceph_debugfs_init(void) | |
440 | { | |
441 | return 0; | |
442 | } | |
443 | ||
444 | void ceph_debugfs_cleanup(void) | |
445 | { | |
446 | } | |
447 | ||
448 | int ceph_debugfs_client_init(struct ceph_client *client) | |
449 | { | |
450 | return 0; | |
451 | } | |
452 | ||
453 | void ceph_debugfs_client_cleanup(struct ceph_client *client) | |
454 | { | |
455 | } | |
456 | ||
457 | #endif // CONFIG_DEBUG_FS |