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 int 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
108 up_read(&osdc->lock);
109 return 0;
110}
111
112static int monc_show(struct seq_file *s, void *p)
113{
114 struct ceph_client *client = s->private;
115 struct ceph_mon_generic_request *req;
116 struct ceph_mon_client *monc = &client->monc;
117 struct rb_node *rp;
118 int i;
119
120 mutex_lock(&monc->mutex);
121
122 for (i = 0; i < ARRAY_SIZE(monc->subs); i++) {
123 seq_printf(s, "have %s %u", ceph_sub_str[i],
124 monc->subs[i].have);
125 if (monc->subs[i].want)
126 seq_printf(s, " want %llu%s",
127 le64_to_cpu(monc->subs[i].item.start),
128 (monc->subs[i].item.flags &
129 CEPH_SUBSCRIBE_ONETIME ? "" : "+"));
130 seq_putc(s, '\n');
131 }
132 seq_printf(s, "fs_cluster_id %d\n", monc->fs_cluster_id);
133
134 for (rp = rb_first(&monc->generic_request_tree); rp; rp = rb_next(rp)) {
135 __u16 op;
136 req = rb_entry(rp, struct ceph_mon_generic_request, node);
137 op = le16_to_cpu(req->request->hdr.type);
138 if (op == CEPH_MSG_STATFS)
139 seq_printf(s, "%llu statfs\n", req->tid);
140 else if (op == CEPH_MSG_MON_GET_VERSION)
141 seq_printf(s, "%llu mon_get_version", req->tid);
142 else
143 seq_printf(s, "%llu unknown\n", req->tid);
144 }
145
146 mutex_unlock(&monc->mutex);
147 return 0;
148}
149
150static void dump_target(struct seq_file *s, struct ceph_osd_request_target *t)
151{
152 int i;
153
154 seq_printf(s, "osd%d\t%llu.%x\t[", t->osd, t->pgid.pool, t->pgid.seed);
155 for (i = 0; i < t->up.size; i++)
156 seq_printf(s, "%s%d", (!i ? "" : ","), t->up.osds[i]);
157 seq_printf(s, "]/%d\t[", t->up.primary);
158 for (i = 0; i < t->acting.size; i++)
159 seq_printf(s, "%s%d", (!i ? "" : ","), t->acting.osds[i]);
160 seq_printf(s, "]/%d\t", t->acting.primary);
161 if (t->target_oloc.pool_ns) {
162 seq_printf(s, "%*pE/%*pE\t0x%x",
163 (int)t->target_oloc.pool_ns->len,
164 t->target_oloc.pool_ns->str,
165 t->target_oid.name_len, t->target_oid.name, t->flags);
166 } else {
167 seq_printf(s, "%*pE\t0x%x", t->target_oid.name_len,
168 t->target_oid.name, t->flags);
169 }
170 if (t->paused)
171 seq_puts(s, "\tP");
172}
173
174static void dump_request(struct seq_file *s, struct ceph_osd_request *req)
175{
176 int i;
177
178 seq_printf(s, "%llu\t", req->r_tid);
179 dump_target(s, &req->r_t);
180
181 seq_printf(s, "\t%d", req->r_attempts);
182
183 for (i = 0; i < req->r_num_ops; i++) {
184 struct ceph_osd_req_op *op = &req->r_ops[i];
185
186 seq_printf(s, "%s%s", (i == 0 ? "\t" : ","),
187 ceph_osd_op_name(op->op));
188 if (op->op == CEPH_OSD_OP_WATCH)
189 seq_printf(s, "-%s",
190 ceph_osd_watch_op_name(op->watch.op));
191 }
192
193 seq_putc(s, '\n');
194}
195
196static void dump_requests(struct seq_file *s, struct ceph_osd *osd)
197{
198 struct rb_node *n;
199
200 mutex_lock(&osd->lock);
201 for (n = rb_first(&osd->o_requests); n; n = rb_next(n)) {
202 struct ceph_osd_request *req =
203 rb_entry(n, struct ceph_osd_request, r_node);
204
205 dump_request(s, req);
206 }
207
208 mutex_unlock(&osd->lock);
209}
210
211static void dump_linger_request(struct seq_file *s,
212 struct ceph_osd_linger_request *lreq)
213{
214 seq_printf(s, "%llu\t", lreq->linger_id);
215 dump_target(s, &lreq->t);
216
217 seq_printf(s, "\t%u\t%s%s/%d\n", lreq->register_gen,
218 lreq->is_watch ? "W" : "N", lreq->committed ? "C" : "",
219 lreq->last_error);
220}
221
222static void dump_linger_requests(struct seq_file *s, struct ceph_osd *osd)
223{
224 struct rb_node *n;
225
226 mutex_lock(&osd->lock);
227 for (n = rb_first(&osd->o_linger_requests); n; n = rb_next(n)) {
228 struct ceph_osd_linger_request *lreq =
229 rb_entry(n, struct ceph_osd_linger_request, node);
230
231 dump_linger_request(s, lreq);
232 }
233
234 mutex_unlock(&osd->lock);
235}
236
237static int osdc_show(struct seq_file *s, void *pp)
238{
239 struct ceph_client *client = s->private;
240 struct ceph_osd_client *osdc = &client->osdc;
241 struct rb_node *n;
242
243 down_read(&osdc->lock);
244 seq_printf(s, "REQUESTS %d homeless %d\n",
245 atomic_read(&osdc->num_requests),
246 atomic_read(&osdc->num_homeless));
247 for (n = rb_first(&osdc->osds); n; n = rb_next(n)) {
248 struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node);
249
250 dump_requests(s, osd);
251 }
252 dump_requests(s, &osdc->homeless_osd);
253
254 seq_puts(s, "LINGER REQUESTS\n");
255 for (n = rb_first(&osdc->osds); n; n = rb_next(n)) {
256 struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node);
257
258 dump_linger_requests(s, osd);
259 }
260 dump_linger_requests(s, &osdc->homeless_osd);
261
262 up_read(&osdc->lock);
263 return 0;
264}
265
266static int client_options_show(struct seq_file *s, void *p)
267{
268 struct ceph_client *client = s->private;
269 int ret;
270
271 ret = ceph_print_client_options(s, client);
272 if (ret)
273 return ret;
274
275 seq_putc(s, '\n');
276 return 0;
277}
278
279CEPH_DEFINE_SHOW_FUNC(monmap_show)
280CEPH_DEFINE_SHOW_FUNC(osdmap_show)
281CEPH_DEFINE_SHOW_FUNC(monc_show)
282CEPH_DEFINE_SHOW_FUNC(osdc_show)
283CEPH_DEFINE_SHOW_FUNC(client_options_show)
284
285int ceph_debugfs_init(void)
286{
287 ceph_debugfs_dir = debugfs_create_dir("ceph", NULL);
288 if (!ceph_debugfs_dir)
289 return -ENOMEM;
290 return 0;
291}
292
293void ceph_debugfs_cleanup(void)
294{
295 debugfs_remove(ceph_debugfs_dir);
296}
297
298int ceph_debugfs_client_init(struct ceph_client *client)
299{
300 int ret = -ENOMEM;
301 char name[80];
302
303 snprintf(name, sizeof(name), "%pU.client%lld", &client->fsid,
304 client->monc.auth->global_id);
305
306 dout("ceph_debugfs_client_init %p %s\n", client, name);
307
308 BUG_ON(client->debugfs_dir);
309 client->debugfs_dir = debugfs_create_dir(name, ceph_debugfs_dir);
310 if (!client->debugfs_dir)
311 goto out;
312
313 client->monc.debugfs_file = debugfs_create_file("monc",
314 0600,
315 client->debugfs_dir,
316 client,
317 &monc_show_fops);
318 if (!client->monc.debugfs_file)
319 goto out;
320
321 client->osdc.debugfs_file = debugfs_create_file("osdc",
322 0600,
323 client->debugfs_dir,
324 client,
325 &osdc_show_fops);
326 if (!client->osdc.debugfs_file)
327 goto out;
328
329 client->debugfs_monmap = debugfs_create_file("monmap",
330 0600,
331 client->debugfs_dir,
332 client,
333 &monmap_show_fops);
334 if (!client->debugfs_monmap)
335 goto out;
336
337 client->debugfs_osdmap = debugfs_create_file("osdmap",
338 0600,
339 client->debugfs_dir,
340 client,
341 &osdmap_show_fops);
342 if (!client->debugfs_osdmap)
343 goto out;
344
345 client->debugfs_options = debugfs_create_file("client_options",
346 0600,
347 client->debugfs_dir,
348 client,
349 &client_options_show_fops);
350 if (!client->debugfs_options)
351 goto out;
352
353 return 0;
354
355out:
356 ceph_debugfs_client_cleanup(client);
357 return ret;
358}
359
360void ceph_debugfs_client_cleanup(struct ceph_client *client)
361{
362 dout("ceph_debugfs_client_cleanup %p\n", client);
363 debugfs_remove(client->debugfs_options);
364 debugfs_remove(client->debugfs_osdmap);
365 debugfs_remove(client->debugfs_monmap);
366 debugfs_remove(client->osdc.debugfs_file);
367 debugfs_remove(client->monc.debugfs_file);
368 debugfs_remove(client->debugfs_dir);
369}
370
371#else
372
373int ceph_debugfs_init(void)
374{
375 return 0;
376}
377
378void ceph_debugfs_cleanup(void)
379{
380}
381
382int ceph_debugfs_client_init(struct ceph_client *client)
383{
384 return 0;
385}
386
387void ceph_debugfs_client_cleanup(struct ceph_client *client)
388{
389}
390
391#endif
392
393EXPORT_SYMBOL(ceph_debugfs_init);
394EXPORT_SYMBOL(ceph_debugfs_cleanup);
395
