1
2#include <linux/ceph/ceph_debug.h>
3
4#include <linux/device.h>
5#include <linux/slab.h>
6#include <linux/module.h>
7#include <linux/ctype.h>
8#include <linux/debugfs.h>
9#include <linux/seq_file.h>
10#include <linux/math64.h>
11#include <linux/ktime.h>
12
13#include <linux/ceph/libceph.h>
14#include <linux/ceph/mon_client.h>
15#include <linux/ceph/auth.h>
16#include <linux/ceph/debugfs.h>
17
18#include "super.h"
19
20#ifdef CONFIG_DEBUG_FS
21
22#include "mds_client.h"
23#include "metric.h"
24
25static int mdsmap_show(struct seq_file *s, void *p)
26{
27 int i;
28 struct ceph_fs_client *fsc = s->private;
29 struct ceph_mdsmap *mdsmap;
30
31 if (!fsc->mdsc || !fsc->mdsc->mdsmap)
32 return 0;
33 mdsmap = fsc->mdsc->mdsmap;
34 seq_printf(s, "epoch %d\n", mdsmap->m_epoch);
35 seq_printf(s, "root %d\n", mdsmap->m_root);
36 seq_printf(s, "max_mds %d\n", mdsmap->m_max_mds);
37 seq_printf(s, "session_timeout %d\n", mdsmap->m_session_timeout);
38 seq_printf(s, "session_autoclose %d\n", mdsmap->m_session_autoclose);
39 for (i = 0; i < mdsmap->possible_max_rank; i++) {
40 struct ceph_entity_addr *addr = &mdsmap->m_info[i].addr;
41 int state = mdsmap->m_info[i].state;
42 seq_printf(s, "\tmds%d\t%s\t(%s)\n", i,
43 ceph_pr_addr(addr),
44 ceph_mds_state_name(state));
45 }
46 return 0;
47}
48
49
50
51
52static int mdsc_show(struct seq_file *s, void *p)
53{
54 struct ceph_fs_client *fsc = s->private;
55 struct ceph_mds_client *mdsc = fsc->mdsc;
56 struct ceph_mds_request *req;
57 struct rb_node *rp;
58 int pathlen = 0;
59 u64 pathbase;
60 char *path;
61
62 mutex_lock(&mdsc->mutex);
63 for (rp = rb_first(&mdsc->request_tree); rp; rp = rb_next(rp)) {
64 req = rb_entry(rp, struct ceph_mds_request, r_node);
65
66 if (req->r_request && req->r_session)
67 seq_printf(s, "%lld\tmds%d\t", req->r_tid,
68 req->r_session->s_mds);
69 else if (!req->r_request)
70 seq_printf(s, "%lld\t(no request)\t", req->r_tid);
71 else
72 seq_printf(s, "%lld\t(no session)\t", req->r_tid);
73
74 seq_printf(s, "%s", ceph_mds_op_name(req->r_op));
75
76 if (test_bit(CEPH_MDS_R_GOT_UNSAFE, &req->r_req_flags))
77 seq_puts(s, "\t(unsafe)");
78 else
79 seq_puts(s, "\t");
80
81 if (req->r_inode) {
82 seq_printf(s, " #%llx", ceph_ino(req->r_inode));
83 } else if (req->r_dentry) {
84 path = ceph_mdsc_build_path(req->r_dentry, &pathlen,
85 &pathbase, 0);
86 if (IS_ERR(path))
87 path = NULL;
88 spin_lock(&req->r_dentry->d_lock);
89 seq_printf(s, " #%llx/%pd (%s)",
90 ceph_ino(d_inode(req->r_dentry->d_parent)),
91 req->r_dentry,
92 path ? path : "");
93 spin_unlock(&req->r_dentry->d_lock);
94 ceph_mdsc_free_path(path, pathlen);
95 } else if (req->r_path1) {
96 seq_printf(s, " #%llx/%s", req->r_ino1.ino,
97 req->r_path1);
98 } else {
99 seq_printf(s, " #%llx", req->r_ino1.ino);
100 }
101
102 if (req->r_old_dentry) {
103 path = ceph_mdsc_build_path(req->r_old_dentry, &pathlen,
104 &pathbase, 0);
105 if (IS_ERR(path))
106 path = NULL;
107 spin_lock(&req->r_old_dentry->d_lock);
108 seq_printf(s, " #%llx/%pd (%s)",
109 req->r_old_dentry_dir ?
110 ceph_ino(req->r_old_dentry_dir) : 0,
111 req->r_old_dentry,
112 path ? path : "");
113 spin_unlock(&req->r_old_dentry->d_lock);
114 ceph_mdsc_free_path(path, pathlen);
115 } else if (req->r_path2 && req->r_op != CEPH_MDS_OP_SYMLINK) {
116 if (req->r_ino2.ino)
117 seq_printf(s, " #%llx/%s", req->r_ino2.ino,
118 req->r_path2);
119 else
120 seq_printf(s, " %s", req->r_path2);
121 }
122
123 seq_puts(s, "\n");
124 }
125 mutex_unlock(&mdsc->mutex);
126
127 return 0;
128}
129
130#define CEPH_LAT_METRIC_SHOW(name, total, avg, min, max, sq) { \
131 s64 _total, _avg, _min, _max, _sq, _st; \
132 _avg = ktime_to_us(avg); \
133 _min = ktime_to_us(min == KTIME_MAX ? 0 : min); \
134 _max = ktime_to_us(max); \
135 _total = total - 1; \
136 _sq = _total > 0 ? DIV64_U64_ROUND_CLOSEST(sq, _total) : 0; \
137 _st = int_sqrt64(_sq); \
138 _st = ktime_to_us(_st); \
139 seq_printf(s, "%-14s%-12lld%-16lld%-16lld%-16lld%lld\n", \
140 name, total, _avg, _min, _max, _st); \
141}
142
143#define CEPH_SZ_METRIC_SHOW(name, total, avg, min, max, sum) { \
144 u64 _min = min == U64_MAX ? 0 : min; \
145 seq_printf(s, "%-14s%-12lld%-16llu%-16llu%-16llu%llu\n", \
146 name, total, avg, _min, max, sum); \
147}
148
149static int metrics_file_show(struct seq_file *s, void *p)
150{
151 struct ceph_fs_client *fsc = s->private;
152 struct ceph_client_metric *m = &fsc->mdsc->metric;
153
154 seq_printf(s, "item total\n");
155 seq_printf(s, "------------------------------------------\n");
156 seq_printf(s, "%-35s%lld\n", "total inodes",
157 percpu_counter_sum(&m->total_inodes));
158 seq_printf(s, "%-35s%lld\n", "opened files",
159 atomic64_read(&m->opened_files));
160 seq_printf(s, "%-35s%lld\n", "pinned i_caps",
161 atomic64_read(&m->total_caps));
162 seq_printf(s, "%-35s%lld\n", "opened inodes",
163 percpu_counter_sum(&m->opened_inodes));
164 return 0;
165}
166
167static const char * const metric_str[] = {
168 "read",
169 "write",
170 "metadata",
171 "copyfrom"
172};
173static int metrics_latency_show(struct seq_file *s, void *p)
174{
175 struct ceph_fs_client *fsc = s->private;
176 struct ceph_client_metric *cm = &fsc->mdsc->metric;
177 struct ceph_metric *m;
178 s64 total, sum, avg, min, max, sq;
179 int i;
180
181 seq_printf(s, "item total avg_lat(us) min_lat(us) max_lat(us) stdev(us)\n");
182 seq_printf(s, "-----------------------------------------------------------------------------------\n");
183
184 for (i = 0; i < METRIC_MAX; i++) {
185 m = &cm->metric[i];
186 spin_lock(&m->lock);
187 total = m->total;
188 sum = m->latency_sum;
189 avg = total > 0 ? DIV64_U64_ROUND_CLOSEST(sum, total) : 0;
190 min = m->latency_min;
191 max = m->latency_max;
192 sq = m->latency_sq_sum;
193 spin_unlock(&m->lock);
194 CEPH_LAT_METRIC_SHOW(metric_str[i], total, avg, min, max, sq);
195 }
196
197 return 0;
198}
199
200static int metrics_size_show(struct seq_file *s, void *p)
201{
202 struct ceph_fs_client *fsc = s->private;
203 struct ceph_client_metric *cm = &fsc->mdsc->metric;
204 struct ceph_metric *m;
205 s64 total;
206 u64 sum, avg, min, max;
207 int i;
208
209 seq_printf(s, "item total avg_sz(bytes) min_sz(bytes) max_sz(bytes) total_sz(bytes)\n");
210 seq_printf(s, "----------------------------------------------------------------------------------------\n");
211
212 for (i = 0; i < METRIC_MAX; i++) {
213
214 if (i == METRIC_METADATA)
215 continue;
216 m = &cm->metric[i];
217 spin_lock(&m->lock);
218 total = m->total;
219 sum = m->size_sum;
220 avg = total > 0 ? DIV64_U64_ROUND_CLOSEST(sum, total) : 0;
221 min = m->size_min;
222 max = m->size_max;
223 spin_unlock(&m->lock);
224 CEPH_SZ_METRIC_SHOW(metric_str[i], total, avg, min, max, sum);
225 }
226
227 return 0;
228}
229
230static int metrics_caps_show(struct seq_file *s, void *p)
231{
232 struct ceph_fs_client *fsc = s->private;
233 struct ceph_client_metric *m = &fsc->mdsc->metric;
234 int nr_caps = 0;
235
236 seq_printf(s, "item total miss hit\n");
237 seq_printf(s, "-------------------------------------------------\n");
238
239 seq_printf(s, "%-14s%-16lld%-16lld%lld\n", "d_lease",
240 atomic64_read(&m->total_dentries),
241 percpu_counter_sum(&m->d_lease_mis),
242 percpu_counter_sum(&m->d_lease_hit));
243
244 nr_caps = atomic64_read(&m->total_caps);
245 seq_printf(s, "%-14s%-16d%-16lld%lld\n", "caps", nr_caps,
246 percpu_counter_sum(&m->i_caps_mis),
247 percpu_counter_sum(&m->i_caps_hit));
248
249 return 0;
250}
251
252static int caps_show_cb(struct inode *inode, struct ceph_cap *cap, void *p)
253{
254 struct seq_file *s = p;
255
256 seq_printf(s, "0x%-17llx%-3d%-17s%-17s\n", ceph_ino(inode),
257 cap->session->s_mds,
258 ceph_cap_string(cap->issued),
259 ceph_cap_string(cap->implemented));
260 return 0;
261}
262
263static int caps_show(struct seq_file *s, void *p)
264{
265 struct ceph_fs_client *fsc = s->private;
266 struct ceph_mds_client *mdsc = fsc->mdsc;
267 int total, avail, used, reserved, min, i;
268 struct cap_wait *cw;
269
270 ceph_reservation_status(fsc, &total, &avail, &used, &reserved, &min);
271 seq_printf(s, "total\t\t%d\n"
272 "avail\t\t%d\n"
273 "used\t\t%d\n"
274 "reserved\t%d\n"
275 "min\t\t%d\n\n",
276 total, avail, used, reserved, min);
277 seq_printf(s, "ino mds issued implemented\n");
278 seq_printf(s, "--------------------------------------------------\n");
279
280 mutex_lock(&mdsc->mutex);
281 for (i = 0; i < mdsc->max_sessions; i++) {
282 struct ceph_mds_session *session;
283
284 session = __ceph_lookup_mds_session(mdsc, i);
285 if (!session)
286 continue;
287 mutex_unlock(&mdsc->mutex);
288 mutex_lock(&session->s_mutex);
289 ceph_iterate_session_caps(session, caps_show_cb, s);
290 mutex_unlock(&session->s_mutex);
291 ceph_put_mds_session(session);
292 mutex_lock(&mdsc->mutex);
293 }
294 mutex_unlock(&mdsc->mutex);
295
296 seq_printf(s, "\n\nWaiters:\n--------\n");
297 seq_printf(s, "tgid ino need want\n");
298 seq_printf(s, "-----------------------------------------------------\n");
299
300 spin_lock(&mdsc->caps_list_lock);
301 list_for_each_entry(cw, &mdsc->cap_wait_list, list) {
302 seq_printf(s, "%-13d0x%-17llx%-17s%-17s\n", cw->tgid, cw->ino,
303 ceph_cap_string(cw->need),
304 ceph_cap_string(cw->want));
305 }
306 spin_unlock(&mdsc->caps_list_lock);
307
308 return 0;
309}
310
311static int mds_sessions_show(struct seq_file *s, void *ptr)
312{
313 struct ceph_fs_client *fsc = s->private;
314 struct ceph_mds_client *mdsc = fsc->mdsc;
315 struct ceph_auth_client *ac = fsc->client->monc.auth;
316 struct ceph_options *opt = fsc->client->options;
317 int mds;
318
319 mutex_lock(&mdsc->mutex);
320
321
322 seq_printf(s, "global_id %llu\n", ac->global_id);
323
324
325 seq_printf(s, "name \"%s\"\n", opt->name ? opt->name : "");
326
327
328 for (mds = 0; mds < mdsc->max_sessions; mds++) {
329 struct ceph_mds_session *session =
330 __ceph_lookup_mds_session(mdsc, mds);
331 if (!session) {
332 continue;
333 }
334 mutex_unlock(&mdsc->mutex);
335 seq_printf(s, "mds.%d %s\n",
336 session->s_mds,
337 ceph_session_state_name(session->s_state));
338
339 ceph_put_mds_session(session);
340 mutex_lock(&mdsc->mutex);
341 }
342 mutex_unlock(&mdsc->mutex);
343
344 return 0;
345}
346
347static int status_show(struct seq_file *s, void *p)
348{
349 struct ceph_fs_client *fsc = s->private;
350 struct ceph_entity_inst *inst = &fsc->client->msgr.inst;
351 struct ceph_entity_addr *client_addr = ceph_client_addr(fsc->client);
352
353 seq_printf(s, "instance: %s.%lld %s/%u\n", ENTITY_NAME(inst->name),
354 ceph_pr_addr(client_addr), le32_to_cpu(client_addr->nonce));
355 seq_printf(s, "blocklisted: %s\n", fsc->blocklisted ? "true" : "false");
356
357 return 0;
358}
359
360DEFINE_SHOW_ATTRIBUTE(mdsmap);
361DEFINE_SHOW_ATTRIBUTE(mdsc);
362DEFINE_SHOW_ATTRIBUTE(caps);
363DEFINE_SHOW_ATTRIBUTE(mds_sessions);
364DEFINE_SHOW_ATTRIBUTE(status);
365DEFINE_SHOW_ATTRIBUTE(metrics_file);
366DEFINE_SHOW_ATTRIBUTE(metrics_latency);
367DEFINE_SHOW_ATTRIBUTE(metrics_size);
368DEFINE_SHOW_ATTRIBUTE(metrics_caps);
369
370
371
372
373
374static int congestion_kb_set(void *data, u64 val)
375{
376 struct ceph_fs_client *fsc = (struct ceph_fs_client *)data;
377
378 fsc->mount_options->congestion_kb = (int)val;
379 return 0;
380}
381
382static int congestion_kb_get(void *data, u64 *val)
383{
384 struct ceph_fs_client *fsc = (struct ceph_fs_client *)data;
385
386 *val = (u64)fsc->mount_options->congestion_kb;
387 return 0;
388}
389
390DEFINE_SIMPLE_ATTRIBUTE(congestion_kb_fops, congestion_kb_get,
391 congestion_kb_set, "%llu\n");
392
393
394void ceph_fs_debugfs_cleanup(struct ceph_fs_client *fsc)
395{
396 dout("ceph_fs_debugfs_cleanup\n");
397 debugfs_remove(fsc->debugfs_bdi);
398 debugfs_remove(fsc->debugfs_congestion_kb);
399 debugfs_remove(fsc->debugfs_mdsmap);
400 debugfs_remove(fsc->debugfs_mds_sessions);
401 debugfs_remove(fsc->debugfs_caps);
402 debugfs_remove(fsc->debugfs_status);
403 debugfs_remove(fsc->debugfs_mdsc);
404 debugfs_remove_recursive(fsc->debugfs_metrics_dir);
405}
406
407void ceph_fs_debugfs_init(struct ceph_fs_client *fsc)
408{
409 char name[100];
410
411 dout("ceph_fs_debugfs_init\n");
412 fsc->debugfs_congestion_kb =
413 debugfs_create_file("writeback_congestion_kb",
414 0600,
415 fsc->client->debugfs_dir,
416 fsc,
417 &congestion_kb_fops);
418
419 snprintf(name, sizeof(name), "../../bdi/%s",
420 bdi_dev_name(fsc->sb->s_bdi));
421 fsc->debugfs_bdi =
422 debugfs_create_symlink("bdi",
423 fsc->client->debugfs_dir,
424 name);
425
426 fsc->debugfs_mdsmap = debugfs_create_file("mdsmap",
427 0400,
428 fsc->client->debugfs_dir,
429 fsc,
430 &mdsmap_fops);
431
432 fsc->debugfs_mds_sessions = debugfs_create_file("mds_sessions",
433 0400,
434 fsc->client->debugfs_dir,
435 fsc,
436 &mds_sessions_fops);
437
438 fsc->debugfs_mdsc = debugfs_create_file("mdsc",
439 0400,
440 fsc->client->debugfs_dir,
441 fsc,
442 &mdsc_fops);
443
444 fsc->debugfs_caps = debugfs_create_file("caps",
445 0400,
446 fsc->client->debugfs_dir,
447 fsc,
448 &caps_fops);
449
450 fsc->debugfs_status = debugfs_create_file("status",
451 0400,
452 fsc->client->debugfs_dir,
453 fsc,
454 &status_fops);
455
456 fsc->debugfs_metrics_dir = debugfs_create_dir("metrics",
457 fsc->client->debugfs_dir);
458
459 debugfs_create_file("file", 0400, fsc->debugfs_metrics_dir, fsc,
460 &metrics_file_fops);
461 debugfs_create_file("latency", 0400, fsc->debugfs_metrics_dir, fsc,
462 &metrics_latency_fops);
463 debugfs_create_file("size", 0400, fsc->debugfs_metrics_dir, fsc,
464 &metrics_size_fops);
465 debugfs_create_file("caps", 0400, fsc->debugfs_metrics_dir, fsc,
466 &metrics_caps_fops);
467}
468
469
470#else
471
472void ceph_fs_debugfs_init(struct ceph_fs_client *fsc)
473{
474}
475
476void ceph_fs_debugfs_cleanup(struct ceph_fs_client *fsc)
477{
478}
479
480#endif
481
