projects/linux·blob v4.13 · refs

500 lines · 12.6 KiB

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
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", t->acting.primary, t->epoch);
193 if (t->target_oloc.pool_ns) {
194 seq_printf(s, "%*pE/%*pE\t0x%x",
195 (int)t->target_oloc.pool_ns->len,
196 t->target_oloc.pool_ns->str,
197 t->target_oid.name_len, t->target_oid.name, t->flags);
198 } else {
199 seq_printf(s, "%*pE\t0x%x", t->target_oid.name_len,
200 t->target_oid.name, t->flags);
201 }
202 if (t->paused)
203 seq_puts(s, "\tP");
204}
205
206static void dump_request(struct seq_file *s, struct ceph_osd_request *req)
207{
208 int i;
209
210 seq_printf(s, "%llu\t", req->r_tid);
211 dump_target(s, &req->r_t);
212
213 seq_printf(s, "\t%d", req->r_attempts);
214
215 for (i = 0; i < req->r_num_ops; i++) {
216 struct ceph_osd_req_op *op = &req->r_ops[i];
217
218 seq_printf(s, "%s%s", (i == 0 ? "\t" : ","),
219 ceph_osd_op_name(op->op));
220 if (op->op == CEPH_OSD_OP_WATCH)
221 seq_printf(s, "-%s",
222 ceph_osd_watch_op_name(op->watch.op));
223 }
224
225 seq_putc(s, '\n');
226}
227
228static void dump_requests(struct seq_file *s, struct ceph_osd *osd)
229{
230 struct rb_node *n;
231
232 mutex_lock(&osd->lock);
233 for (n = rb_first(&osd->o_requests); n; n = rb_next(n)) {
234 struct ceph_osd_request *req =
235 rb_entry(n, struct ceph_osd_request, r_node);
236
237 dump_request(s, req);
238 }
239
240 mutex_unlock(&osd->lock);
241}
242
243static void dump_linger_request(struct seq_file *s,
244 struct ceph_osd_linger_request *lreq)
245{
246 seq_printf(s, "%llu\t", lreq->linger_id);
247 dump_target(s, &lreq->t);
248
249 seq_printf(s, "\t%u\t%s%s/%d\n", lreq->register_gen,
250 lreq->is_watch ? "W" : "N", lreq->committed ? "C" : "",
251 lreq->last_error);
252}
253
254static void dump_linger_requests(struct seq_file *s, struct ceph_osd *osd)
255{
256 struct rb_node *n;
257
258 mutex_lock(&osd->lock);
259 for (n = rb_first(&osd->o_linger_requests); n; n = rb_next(n)) {
260 struct ceph_osd_linger_request *lreq =
261 rb_entry(n, struct ceph_osd_linger_request, node);
262
263 dump_linger_request(s, lreq);
264 }
265
266 mutex_unlock(&osd->lock);
267}
268
269static void dump_snapid(struct seq_file *s, u64 snapid)
270{
271 if (snapid == CEPH_NOSNAP)
272 seq_puts(s, "head");
273 else if (snapid == CEPH_SNAPDIR)
274 seq_puts(s, "snapdir");
275 else
276 seq_printf(s, "%llx", snapid);
277}
278
279static void dump_name_escaped(struct seq_file *s, unsigned char *name,
280 size_t len)
281{
282 size_t i;
283
284 for (i = 0; i < len; i++) {
285 if (name[i] == '%' || name[i] == ':' || name[i] == '/' ||
286 name[i] < 32 || name[i] >= 127) {
287 seq_printf(s, "%%%02x", name[i]);
288 } else {
289 seq_putc(s, name[i]);
290 }
291 }
292}
293
294static void dump_hoid(struct seq_file *s, const struct ceph_hobject_id *hoid)
295{
296 if (hoid->snapid == 0 && hoid->hash == 0 && !hoid->is_max &&
297 hoid->pool == S64_MIN) {
298 seq_puts(s, "MIN");
299 return;
300 }
301 if (hoid->is_max) {
302 seq_puts(s, "MAX");
303 return;
304 }
305 seq_printf(s, "%lld:%08x:", hoid->pool, hoid->hash_reverse_bits);
306 dump_name_escaped(s, hoid->nspace, hoid->nspace_len);
307 seq_putc(s, ':');
308 dump_name_escaped(s, hoid->key, hoid->key_len);
309 seq_putc(s, ':');
310 dump_name_escaped(s, hoid->oid, hoid->oid_len);
311 seq_putc(s, ':');
312 dump_snapid(s, hoid->snapid);
313}
314
315static void dump_backoffs(struct seq_file *s, struct ceph_osd *osd)
316{
317 struct rb_node *n;
318
319 mutex_lock(&osd->lock);
320 for (n = rb_first(&osd->o_backoffs_by_id); n; n = rb_next(n)) {
321 struct ceph_osd_backoff *backoff =
322 rb_entry(n, struct ceph_osd_backoff, id_node);
323
324 seq_printf(s, "osd%d\t", osd->o_osd);
325 dump_spgid(s, &backoff->spgid);
326 seq_printf(s, "\t%llu\t", backoff->id);
327 dump_hoid(s, backoff->begin);
328 seq_putc(s, '\t');
329 dump_hoid(s, backoff->end);
330 seq_putc(s, '\n');
331 }
332
333 mutex_unlock(&osd->lock);
334}
335
336static int osdc_show(struct seq_file *s, void *pp)
337{
338 struct ceph_client *client = s->private;
339 struct ceph_osd_client *osdc = &client->osdc;
340 struct rb_node *n;
341
342 down_read(&osdc->lock);
343 seq_printf(s, "REQUESTS %d homeless %d\n",
344 atomic_read(&osdc->num_requests),
345 atomic_read(&osdc->num_homeless));
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_requests(s, osd);
350 }
351 dump_requests(s, &osdc->homeless_osd);
352
353 seq_puts(s, "LINGER REQUESTS\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_linger_requests(s, osd);
358 }
359 dump_linger_requests(s, &osdc->homeless_osd);
360
361 seq_puts(s, "BACKOFFS\n");
362 for (n = rb_first(&osdc->osds); n; n = rb_next(n)) {
363 struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node);
364
365 dump_backoffs(s, osd);
366 }
367
368 up_read(&osdc->lock);
369 return 0;
370}
371
372static int client_options_show(struct seq_file *s, void *p)
373{
374 struct ceph_client *client = s->private;
375 int ret;
376
377 ret = ceph_print_client_options(s, client);
378 if (ret)
379 return ret;
380
381 seq_putc(s, '\n');
382 return 0;
383}
384
385CEPH_DEFINE_SHOW_FUNC(monmap_show)
386CEPH_DEFINE_SHOW_FUNC(osdmap_show)
387CEPH_DEFINE_SHOW_FUNC(monc_show)
388CEPH_DEFINE_SHOW_FUNC(osdc_show)
389CEPH_DEFINE_SHOW_FUNC(client_options_show)
390
391int ceph_debugfs_init(void)
392{
393 ceph_debugfs_dir = debugfs_create_dir("ceph", NULL);
394 if (!ceph_debugfs_dir)
395 return -ENOMEM;
396 return 0;
397}
398
399void ceph_debugfs_cleanup(void)
400{
401 debugfs_remove(ceph_debugfs_dir);
402}
403
404int ceph_debugfs_client_init(struct ceph_client *client)
405{
406 int ret = -ENOMEM;
407 char name[80];
408
409 snprintf(name, sizeof(name), "%pU.client%lld", &client->fsid,
410 client->monc.auth->global_id);
411
412 dout("ceph_debugfs_client_init %p %s\n", client, name);
413
414 BUG_ON(client->debugfs_dir);
415 client->debugfs_dir = debugfs_create_dir(name, ceph_debugfs_dir);
416 if (!client->debugfs_dir)
417 goto out;
418
419 client->monc.debugfs_file = debugfs_create_file("monc",
420 0600,
421 client->debugfs_dir,
422 client,
423 &monc_show_fops);
424 if (!client->monc.debugfs_file)
425 goto out;
426
427 client->osdc.debugfs_file = debugfs_create_file("osdc",
428 0600,
429 client->debugfs_dir,
430 client,
431 &osdc_show_fops);
432 if (!client->osdc.debugfs_file)
433 goto out;
434
435 client->debugfs_monmap = debugfs_create_file("monmap",
436 0600,
437 client->debugfs_dir,
438 client,
439 &monmap_show_fops);
440 if (!client->debugfs_monmap)
441 goto out;
442
443 client->debugfs_osdmap = debugfs_create_file("osdmap",
444 0600,
445 client->debugfs_dir,
446 client,
447 &osdmap_show_fops);
448 if (!client->debugfs_osdmap)
449 goto out;
450
451 client->debugfs_options = debugfs_create_file("client_options",
452 0600,
453 client->debugfs_dir,
454 client,
455 &client_options_show_fops);
456 if (!client->debugfs_options)
457 goto out;
458
459 return 0;
460
461out:
462 ceph_debugfs_client_cleanup(client);
463 return ret;
464}
465
466void ceph_debugfs_client_cleanup(struct ceph_client *client)
467{
468 dout("ceph_debugfs_client_cleanup %p\n", client);
469 debugfs_remove(client->debugfs_options);
470 debugfs_remove(client->debugfs_osdmap);
471 debugfs_remove(client->debugfs_monmap);
472 debugfs_remove(client->osdc.debugfs_file);
473 debugfs_remove(client->monc.debugfs_file);
474 debugfs_remove(client->debugfs_dir);
475}
476
477#else /* CONFIG_DEBUG_FS */
478
479int ceph_debugfs_init(void)
480{
481 return 0;
482}
483
484void ceph_debugfs_cleanup(void)
485{
486}
487
488int ceph_debugfs_client_init(struct ceph_client *client)
489{
490 return 0;
491}
492
493void ceph_debugfs_client_cleanup(struct ceph_client *client)
494{
495}
496
497#endif /* CONFIG_DEBUG_FS */
498
499EXPORT_SYMBOL(ceph_debugfs_init);
500EXPORT_SYMBOL(ceph_debugfs_cleanup);