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
19
20
21
22
23
24
25
26
27
28
29
30
31static struct dentry *ceph_debugfs_dir;
32
33static 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
53static int osdmap_show(struct seq_file *s, void *p)
54{
55 int i;
56 struct ceph_client *client = s->private;
57 struct ceph_osd_client *osdc = &client->osdc;
58 struct ceph_osdmap *map = osdc->osdmap;
59 struct rb_node *n;
60
61 if (map == NULL)
62 return 0;
63
64 down_read(&osdc->lock);
65 seq_printf(s, "epoch %u barrier %u flags 0x%x\n", map->epoch,
66 osdc->epoch_barrier, map->flags);
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 u32 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 for (n = rb_first(&map->pg_upmap); n; n = rb_next(n)) {
108 struct ceph_pg_mapping *pg =
109 rb_entry(n, struct ceph_pg_mapping, node);
110
111 seq_printf(s, "pg_upmap %llu.%x [", pg->pgid.pool,
112 pg->pgid.seed);
113 for (i = 0; i < pg->pg_upmap.len; i++)
114 seq_printf(s, "%s%d", (i == 0 ? "" : ","),
115 pg->pg_upmap.osds[i]);
116 seq_printf(s, "]\n");
117 }
118 for (n = rb_first(&map->pg_upmap_items); n; n = rb_next(n)) {
119 struct ceph_pg_mapping *pg =
120 rb_entry(n, struct ceph_pg_mapping, node);
121
122 seq_printf(s, "pg_upmap_items %llu.%x [", pg->pgid.pool,
123 pg->pgid.seed);
124 for (i = 0; i < pg->pg_upmap_items.len; i++)
125 seq_printf(s, "%s%d->%d", (i == 0 ? "" : ","),
126 pg->pg_upmap_items.from_to[i][0],
127 pg->pg_upmap_items.from_to[i][1]);
128 seq_printf(s, "]\n");
129 }
130
131 up_read(&osdc->lock);
132 return 0;
133}
134
135static int monc_show(struct seq_file *s, void *p)
136{
137 struct ceph_client *client = s->private;
138 struct ceph_mon_generic_request *req;
139 struct ceph_mon_client *monc = &client->monc;
140 struct rb_node *rp;
141 int i;
142
143 mutex_lock(&monc->mutex);
144
145 for (i = 0; i < ARRAY_SIZE(monc->subs); i++) {
146 seq_printf(s, "have %s %u", ceph_sub_str[i],
147 monc->subs[i].have);
148 if (monc->subs[i].want)
149 seq_printf(s, " want %llu%s",
150 le64_to_cpu(monc->subs[i].item.start),
151 (monc->subs[i].item.flags &
152 CEPH_SUBSCRIBE_ONETIME ? "" : "+"));
153 seq_putc(s, '\n');
154 }
155 seq_printf(s, "fs_cluster_id %d\n", monc->fs_cluster_id);
156
157 for (rp = rb_first(&monc->generic_request_tree); rp; rp = rb_next(rp)) {
158 __u16 op;
159 req = rb_entry(rp, struct ceph_mon_generic_request, node);
160 op = le16_to_cpu(req->request->hdr.type);
161 if (op == CEPH_MSG_STATFS)
162 seq_printf(s, "%llu statfs\n", req->tid);
163 else if (op == CEPH_MSG_MON_GET_VERSION)
164 seq_printf(s, "%llu mon_get_version", req->tid);
165 else
166 seq_printf(s, "%llu unknown\n", req->tid);
167 }
168
169 mutex_unlock(&monc->mutex);
170 return 0;
171}
172
173static void dump_spgid(struct seq_file *s, const struct ceph_spg *spgid)
174{
175 seq_printf(s, "%llu.%x", spgid->pgid.pool, spgid->pgid.seed);
176 if (spgid->shard != CEPH_SPG_NOSHARD)
177 seq_printf(s, "s%d", spgid->shard);
178}
179
180static void dump_target(struct seq_file *s, struct ceph_osd_request_target *t)
181{
182 int i;
183
184 seq_printf(s, "osd%d\t%llu.%x\t", t->osd, t->pgid.pool, t->pgid.seed);
185 dump_spgid(s, &t->spgid);
186 seq_puts(s, "\t[");
187 for (i = 0; i < t->up.size; i++)
188 seq_printf(s, "%s%d", (!i ? "" : ","), t->up.osds[i]);
189 seq_printf(s, "]/%d\t[", t->up.primary);
190 for (i = 0; i < t->acting.size; i++)
191 seq_printf(s, "%s%d", (!i ? "" : ","), t->acting.osds[i]);
192 seq_printf(s, "]/%d\te%u\t%s\t0x%x", t->acting.primary, t->epoch,
193 t->target_oid.name, t->flags);
194 if (t->paused)
195 seq_puts(s, "\tP");
196}
197
198static void dump_request(struct seq_file *s, struct ceph_osd_request *req)
199{
200 int i;
201
202 seq_printf(s, "%llu\t", req->r_tid);
203 dump_target(s, &req->r_t);
204
205 seq_printf(s, "\t%d", req->r_attempts);
206
207 for (i = 0; i < req->r_num_ops; i++) {
208 struct ceph_osd_req_op *op = &req->r_ops[i];
209
210 seq_printf(s, "%s%s", (i == 0 ? "\t" : ","),
211 ceph_osd_op_name(op->op));
212 if (op->op == CEPH_OSD_OP_WATCH)
213 seq_printf(s, "-%s",
214 ceph_osd_watch_op_name(op->watch.op));
215 }
216
217 seq_putc(s, '\n');
218}
219
220static void dump_requests(struct seq_file *s, struct ceph_osd *osd)
221{
222 struct rb_node *n;
223
224 mutex_lock(&osd->lock);
225 for (n = rb_first(&osd->o_requests); n; n = rb_next(n)) {
226 struct ceph_osd_request *req =
227 rb_entry(n, struct ceph_osd_request, r_node);
228
229 dump_request(s, req);
230 }
231
232 mutex_unlock(&osd->lock);
233}
234
235static void dump_linger_request(struct seq_file *s,
236 struct ceph_osd_linger_request *lreq)
237{
238 seq_printf(s, "%llu\t", lreq->linger_id);
239 dump_target(s, &lreq->t);
240
241 seq_printf(s, "\t%u\t%s%s/%d\n", lreq->register_gen,
242 lreq->is_watch ? "W" : "N", lreq->committed ? "C" : "",
243 lreq->last_error);
244}
245
246static void dump_linger_requests(struct seq_file *s, struct ceph_osd *osd)
247{
248 struct rb_node *n;
249
250 mutex_lock(&osd->lock);
251 for (n = rb_first(&osd->o_linger_requests); n; n = rb_next(n)) {
252 struct ceph_osd_linger_request *lreq =
253 rb_entry(n, struct ceph_osd_linger_request, node);
254
255 dump_linger_request(s, lreq);
256 }
257
258 mutex_unlock(&osd->lock);
259}
260
261static void dump_snapid(struct seq_file *s, u64 snapid)
262{
263 if (snapid == CEPH_NOSNAP)
264 seq_puts(s, "head");
265 else if (snapid == CEPH_SNAPDIR)
266 seq_puts(s, "snapdir");
267 else
268 seq_printf(s, "%llx", snapid);
269}
270
271static void dump_name_escaped(struct seq_file *s, unsigned char *name,
272 size_t len)
273{
274 size_t i;
275
276 for (i = 0; i < len; i++) {
277 if (name[i] == '%' || name[i] == ':' || name[i] == '/' ||
278 name[i] < 32 || name[i] >= 127) {
279 seq_printf(s, "%%%02x", name[i]);
280 } else {
281 seq_putc(s, name[i]);
282 }
283 }
284}
285
286static void dump_hoid(struct seq_file *s, const struct ceph_hobject_id *hoid)
287{
288 if (hoid->snapid == 0 && hoid->hash == 0 && !hoid->is_max &&
289 hoid->pool == S64_MIN) {
290 seq_puts(s, "MIN");
291 return;
292 }
293 if (hoid->is_max) {
294 seq_puts(s, "MAX");
295 return;
296 }
297 seq_printf(s, "%lld:%08x:", hoid->pool, hoid->hash_reverse_bits);
298 dump_name_escaped(s, hoid->nspace, hoid->nspace_len);
299 seq_putc(s, ':');
300 dump_name_escaped(s, hoid->key, hoid->key_len);
301 seq_putc(s, ':');
302 dump_name_escaped(s, hoid->oid, hoid->oid_len);
303 seq_putc(s, ':');
304 dump_snapid(s, hoid->snapid);
305}
306
307static void dump_backoffs(struct seq_file *s, struct ceph_osd *osd)
308{
309 struct rb_node *n;
310
311 mutex_lock(&osd->lock);
312 for (n = rb_first(&osd->o_backoffs_by_id); n; n = rb_next(n)) {
313 struct ceph_osd_backoff *backoff =
314 rb_entry(n, struct ceph_osd_backoff, id_node);
315
316 seq_printf(s, "osd%d\t", osd->o_osd);
317 dump_spgid(s, &backoff->spgid);
318 seq_printf(s, "\t%llu\t", backoff->id);
319 dump_hoid(s, backoff->begin);
320 seq_putc(s, '\t');
321 dump_hoid(s, backoff->end);
322 seq_putc(s, '\n');
323 }
324
325 mutex_unlock(&osd->lock);
326}
327
328static int osdc_show(struct seq_file *s, void *pp)
329{
330 struct ceph_client *client = s->private;
331 struct ceph_osd_client *osdc = &client->osdc;
332 struct rb_node *n;
333
334 down_read(&osdc->lock);
335 seq_printf(s, "REQUESTS %d homeless %d\n",
336 atomic_read(&osdc->num_requests),
337 atomic_read(&osdc->num_homeless));
338 for (n = rb_first(&osdc->osds); n; n = rb_next(n)) {
339 struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node);
340
341 dump_requests(s, osd);
342 }
343 dump_requests(s, &osdc->homeless_osd);
344
345 seq_puts(s, "LINGER REQUESTS\n");
346 for (n = rb_first(&osdc->osds); n; n = rb_next(n)) {
347 struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node);
348
349 dump_linger_requests(s, osd);
350 }
351 dump_linger_requests(s, &osdc->homeless_osd);
352
353 seq_puts(s, "BACKOFFS\n");
354 for (n = rb_first(&osdc->osds); n; n = rb_next(n)) {
355 struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node);
356
357 dump_backoffs(s, osd);
358 }
359
360 up_read(&osdc->lock);
361 return 0;
362}
363
364static int client_options_show(struct seq_file *s, void *p)
365{
366 struct ceph_client *client = s->private;
367 int ret;
368
369 ret = ceph_print_client_options(s, client);
370 if (ret)
371 return ret;
372
373 seq_putc(s, '\n');
374 return 0;
375}
376
377CEPH_DEFINE_SHOW_FUNC(monmap_show)
378CEPH_DEFINE_SHOW_FUNC(osdmap_show)
379CEPH_DEFINE_SHOW_FUNC(monc_show)
380CEPH_DEFINE_SHOW_FUNC(osdc_show)
381CEPH_DEFINE_SHOW_FUNC(client_options_show)
382
383int ceph_debugfs_init(void)
384{
385 ceph_debugfs_dir = debugfs_create_dir("ceph", NULL);
386 if (!ceph_debugfs_dir)
387 return -ENOMEM;
388 return 0;
389}
390
391void ceph_debugfs_cleanup(void)
392{
393 debugfs_remove(ceph_debugfs_dir);
394}
395
396int ceph_debugfs_client_init(struct ceph_client *client)
397{
398 int ret = -ENOMEM;
399 char name[80];
400
401 snprintf(name, sizeof(name), "%pU.client%lld", &client->fsid,
402 client->monc.auth->global_id);
403
404 dout("ceph_debugfs_client_init %p %s\n", client, name);
405
406 BUG_ON(client->debugfs_dir);
407 client->debugfs_dir = debugfs_create_dir(name, ceph_debugfs_dir);
408 if (!client->debugfs_dir)
409 goto out;
410
411 client->monc.debugfs_file = debugfs_create_file("monc",
412 0600,
413 client->debugfs_dir,
414 client,
415 &monc_show_fops);
416 if (!client->monc.debugfs_file)
417 goto out;
418
419 client->osdc.debugfs_file = debugfs_create_file("osdc",
420 0600,
421 client->debugfs_dir,
422 client,
423 &osdc_show_fops);
424 if (!client->osdc.debugfs_file)
425 goto out;
426
427 client->debugfs_monmap = debugfs_create_file("monmap",
428 0600,
429 client->debugfs_dir,
430 client,
431 &monmap_show_fops);
432 if (!client->debugfs_monmap)
433 goto out;
434
435 client->debugfs_osdmap = debugfs_create_file("osdmap",
436 0600,
437 client->debugfs_dir,
438 client,
439 &osdmap_show_fops);
440 if (!client->debugfs_osdmap)
441 goto out;
442
443 client->debugfs_options = debugfs_create_file("client_options",
444 0600,
445 client->debugfs_dir,
446 client,
447 &client_options_show_fops);
448 if (!client->debugfs_options)
449 goto out;
450
451 return 0;
452
453out:
454 ceph_debugfs_client_cleanup(client);
455 return ret;
456}
457
458void ceph_debugfs_client_cleanup(struct ceph_client *client)
459{
460 dout("ceph_debugfs_client_cleanup %p\n", client);
461 debugfs_remove(client->debugfs_options);
462 debugfs_remove(client->debugfs_osdmap);
463 debugfs_remove(client->debugfs_monmap);
464 debugfs_remove(client->osdc.debugfs_file);
465 debugfs_remove(client->monc.debugfs_file);
466 debugfs_remove(client->debugfs_dir);
467}
468
469#else
470
471int ceph_debugfs_init(void)
472{
473 return 0;
474}
475
476void ceph_debugfs_cleanup(void)
477{
478}
479
480int ceph_debugfs_client_init(struct ceph_client *client)
481{
482 return 0;
483}
484
485void ceph_debugfs_client_cleanup(struct ceph_client *client)
486{
487}
488
489#endif
490
491EXPORT_SYMBOL(ceph_debugfs_init);
492EXPORT_SYMBOL(ceph_debugfs_cleanup);
493
