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-rw-r--r--fs/ceph/debugfs.c483
1 files changed, 483 insertions, 0 deletions
diff --git a/fs/ceph/debugfs.c b/fs/ceph/debugfs.c
new file mode 100644
index 000000000000..e159f1415110
--- /dev/null
+++ b/fs/ceph/debugfs.c
@@ -0,0 +1,483 @@
1#include "ceph_debug.h"
2
3#include <linux/device.h>
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"
11#include "mon_client.h"
12#include "auth.h"
13
14#ifdef CONFIG_DEBUG_FS
15
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
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 pr_addr(&inst->addr.in_addr));
49 }
50 return 0;
51}
52
53static 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
77static int osdmap_show(struct seq_file *s, void *p)
78{
79 int i;
80 struct ceph_client *client = s->private;
81 struct rb_node *n;
82
83 if (client->osdc.osdmap == NULL)
84 return 0;
85 seq_printf(s, "epoch %d\n", client->osdc.osdmap->epoch);
86 seq_printf(s, "flags%s%s\n",
87 (client->osdc.osdmap->flags & CEPH_OSDMAP_NEARFULL) ?
88 " NEARFULL" : "",
89 (client->osdc.osdmap->flags & CEPH_OSDMAP_FULL) ?
90 " FULL" : "");
91 for (n = rb_first(&client->osdc.osdmap->pg_pools); n; n = rb_next(n)) {
92 struct ceph_pg_pool_info *pool =
93 rb_entry(n, struct ceph_pg_pool_info, node);
94 seq_printf(s, "pg_pool %d pg_num %d / %d, lpg_num %d / %d\n",
95 pool->id, pool->v.pg_num, pool->pg_num_mask,
96 pool->v.lpg_num, pool->lpg_num_mask);
97 }
98 for (i = 0; i < client->osdc.osdmap->max_osd; i++) {
99 struct ceph_entity_addr *addr =
100 &client->osdc.osdmap->osd_addr[i];
101 int state = client->osdc.osdmap->osd_state[i];
102 char sb[64];
103
104 seq_printf(s, "\tosd%d\t%s\t%3d%%\t(%s)\n",
105 i, pr_addr(&addr->in_addr),
106 ((client->osdc.osdmap->osd_weight[i]*100) >> 16),
107 ceph_osdmap_state_str(sb, sizeof(sb), state));
108 }
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_statfs_request *req;
116 struct ceph_mon_client *monc = &client->monc;
117 struct rb_node *rp;
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 for (rp = rb_first(&monc->statfs_request_tree); rp; rp = rb_next(rp)) {
129 req = rb_entry(rp, struct ceph_mon_statfs_request, node);
130 seq_printf(s, "%lld statfs\n", req->tid);
131 }
132
133 mutex_unlock(&monc->mutex);
134 return 0;
135}
136
137static int mdsc_show(struct seq_file *s, void *p)
138{
139 struct ceph_client *client = s->private;
140 struct ceph_mds_client *mdsc = &client->mdsc;
141 struct ceph_mds_request *req;
142 struct rb_node *rp;
143 int pathlen;
144 u64 pathbase;
145 char *path;
146
147 mutex_lock(&mdsc->mutex);
148 for (rp = rb_first(&mdsc->request_tree); rp; rp = rb_next(rp)) {
149 req = rb_entry(rp, struct ceph_mds_request, r_node);
150
151 if (req->r_request)
152 seq_printf(s, "%lld\tmds%d\t", req->r_tid, req->r_mds);
153 else
154 seq_printf(s, "%lld\t(no request)\t", req->r_tid);
155
156 seq_printf(s, "%s", ceph_mds_op_name(req->r_op));
157
158 if (req->r_got_unsafe)
159 seq_printf(s, "\t(unsafe)");
160 else
161 seq_printf(s, "\t");
162
163 if (req->r_inode) {
164 seq_printf(s, " #%llx", ceph_ino(req->r_inode));
165 } else if (req->r_dentry) {
166 path = ceph_mdsc_build_path(req->r_dentry, &pathlen,
167 &pathbase, 0);
168 spin_lock(&req->r_dentry->d_lock);
169 seq_printf(s, " #%llx/%.*s (%s)",
170 ceph_ino(req->r_dentry->d_parent->d_inode),
171 req->r_dentry->d_name.len,
172 req->r_dentry->d_name.name,
173 path ? path : "");
174 spin_unlock(&req->r_dentry->d_lock);
175 kfree(path);
176 } else if (req->r_path1) {
177 seq_printf(s, " #%llx/%s", req->r_ino1.ino,
178 req->r_path1);
179 }
180
181 if (req->r_old_dentry) {
182 path = ceph_mdsc_build_path(req->r_old_dentry, &pathlen,
183 &pathbase, 0);
184 spin_lock(&req->r_old_dentry->d_lock);
185 seq_printf(s, " #%llx/%.*s (%s)",
186 ceph_ino(req->r_old_dentry->d_parent->d_inode),
187 req->r_old_dentry->d_name.len,
188 req->r_old_dentry->d_name.name,
189 path ? path : "");
190 spin_unlock(&req->r_old_dentry->d_lock);
191 kfree(path);
192 } else if (req->r_path2) {
193 if (req->r_ino2.ino)
194 seq_printf(s, " #%llx/%s", req->r_ino2.ino,
195 req->r_path2);
196 else
197 seq_printf(s, " %s", req->r_path2);
198 }
199
200 seq_printf(s, "\n");
201 }
202 mutex_unlock(&mdsc->mutex);
203
204 return 0;
205}
206
207static int osdc_show(struct seq_file *s, void *pp)
208{
209 struct ceph_client *client = s->private;
210 struct ceph_osd_client *osdc = &client->osdc;
211 struct rb_node *p;
212
213 mutex_lock(&osdc->request_mutex);
214 for (p = rb_first(&osdc->requests); p; p = rb_next(p)) {
215 struct ceph_osd_request *req;
216 struct ceph_osd_request_head *head;
217 struct ceph_osd_op *op;
218 int num_ops;
219 int opcode, olen;
220 int i;
221
222 req = rb_entry(p, struct ceph_osd_request, r_node);
223
224 seq_printf(s, "%lld\tosd%d\t%d.%x\t", req->r_tid,
225 req->r_osd ? req->r_osd->o_osd : -1,
226 le32_to_cpu(req->r_pgid.pool),
227 le16_to_cpu(req->r_pgid.ps));
228
229 head = req->r_request->front.iov_base;
230 op = (void *)(head + 1);
231
232 num_ops = le16_to_cpu(head->num_ops);
233 olen = le32_to_cpu(head->object_len);
234 seq_printf(s, "%.*s", olen,
235 (const char *)(head->ops + num_ops));
236
237 if (req->r_reassert_version.epoch)
238 seq_printf(s, "\t%u'%llu",
239 (unsigned)le32_to_cpu(req->r_reassert_version.epoch),
240 le64_to_cpu(req->r_reassert_version.version));
241 else
242 seq_printf(s, "\t");
243
244 for (i = 0; i < num_ops; i++) {
245 opcode = le16_to_cpu(op->op);
246 seq_printf(s, "\t%s", ceph_osd_op_name(opcode));
247 op++;
248 }
249
250 seq_printf(s, "\n");
251 }
252 mutex_unlock(&osdc->request_mutex);
253 return 0;
254}
255
256static int caps_show(struct seq_file *s, void *p)
257{
258 struct ceph_client *client = p;
259 int total, avail, used, reserved, min;
260
261 ceph_reservation_status(client, &total, &avail, &used, &reserved, &min);
262 seq_printf(s, "total\t\t%d\n"
263 "avail\t\t%d\n"
264 "used\t\t%d\n"
265 "reserved\t%d\n"
266 "min\t%d\n",
267 total, avail, used, reserved, min);
268 return 0;
269}
270
271static int dentry_lru_show(struct seq_file *s, void *ptr)
272{
273 struct ceph_client *client = s->private;
274 struct ceph_mds_client *mdsc = &client->mdsc;
275 struct ceph_dentry_info *di;
276
277 spin_lock(&mdsc->dentry_lru_lock);
278 list_for_each_entry(di, &mdsc->dentry_lru, lru) {
279 struct dentry *dentry = di->dentry;
280 seq_printf(s, "%p %p\t%.*s\n",
281 di, dentry, dentry->d_name.len, dentry->d_name.name);
282 }
283 spin_unlock(&mdsc->dentry_lru_lock);
284
285 return 0;
286}
287
288#define DEFINE_SHOW_FUNC(name) \
289static int name##_open(struct inode *inode, struct file *file) \
290{ \
291 struct seq_file *sf; \
292 int ret; \
293 \
294 ret = single_open(file, name, NULL); \
295 sf = file->private_data; \
296 sf->private = inode->i_private; \
297 return ret; \
298} \
299 \
300static const struct file_operations name##_fops = { \
301 .open = name##_open, \
302 .read = seq_read, \
303 .llseek = seq_lseek, \
304 .release = single_release, \
305};
306
307DEFINE_SHOW_FUNC(monmap_show)
308DEFINE_SHOW_FUNC(mdsmap_show)
309DEFINE_SHOW_FUNC(osdmap_show)
310DEFINE_SHOW_FUNC(monc_show)
311DEFINE_SHOW_FUNC(mdsc_show)
312DEFINE_SHOW_FUNC(osdc_show)
313DEFINE_SHOW_FUNC(dentry_lru_show)
314DEFINE_SHOW_FUNC(caps_show)
315
316static int congestion_kb_set(void *data, u64 val)
317{
318 struct ceph_client *client = (struct ceph_client *)data;
319
320 if (client)
321 client->mount_args->congestion_kb = (int)val;
322
323 return 0;
324}
325
326static int congestion_kb_get(void *data, u64 *val)
327{
328 struct ceph_client *client = (struct ceph_client *)data;
329
330 if (client)
331 *val = (u64)client->mount_args->congestion_kb;
332
333 return 0;
334}
335
336
337DEFINE_SIMPLE_ATTRIBUTE(congestion_kb_fops, congestion_kb_get,
338 congestion_kb_set, "%llu\n");
339
340int __init ceph_debugfs_init(void)
341{
342 ceph_debugfs_dir = debugfs_create_dir("ceph", NULL);
343 if (!ceph_debugfs_dir)
344 return -ENOMEM;
345 return 0;
346}
347
348void ceph_debugfs_cleanup(void)
349{
350 debugfs_remove(ceph_debugfs_dir);
351}
352
353int ceph_debugfs_client_init(struct ceph_client *client)
354{
355 int ret = 0;
356 char name[80];
357
358 snprintf(name, sizeof(name), FSID_FORMAT ".client%lld",
359 PR_FSID(&client->fsid), client->monc.auth->global_id);
360
361 client->debugfs_dir = debugfs_create_dir(name, ceph_debugfs_dir);
362 if (!client->debugfs_dir)
363 goto out;
364
365 client->monc.debugfs_file = debugfs_create_file("monc",
366 0600,
367 client->debugfs_dir,
368 client,
369 &monc_show_fops);
370 if (!client->monc.debugfs_file)
371 goto out;
372
373 client->mdsc.debugfs_file = debugfs_create_file("mdsc",
374 0600,
375 client->debugfs_dir,
376 client,
377 &mdsc_show_fops);
378 if (!client->mdsc.debugfs_file)
379 goto out;
380
381 client->osdc.debugfs_file = debugfs_create_file("osdc",
382 0600,
383 client->debugfs_dir,
384 client,
385 &osdc_show_fops);
386 if (!client->osdc.debugfs_file)
387 goto out;
388
389 client->debugfs_monmap = debugfs_create_file("monmap",
390 0600,
391 client->debugfs_dir,
392 client,
393 &monmap_show_fops);
394 if (!client->debugfs_monmap)
395 goto out;
396
397 client->debugfs_mdsmap = debugfs_create_file("mdsmap",
398 0600,
399 client->debugfs_dir,
400 client,
401 &mdsmap_show_fops);
402 if (!client->debugfs_mdsmap)
403 goto out;
404
405 client->debugfs_osdmap = debugfs_create_file("osdmap",
406 0600,
407 client->debugfs_dir,
408 client,
409 &osdmap_show_fops);
410 if (!client->debugfs_osdmap)
411 goto out;
412
413 client->debugfs_dentry_lru = debugfs_create_file("dentry_lru",
414 0600,
415 client->debugfs_dir,
416 client,
417 &dentry_lru_show_fops);
418 if (!client->debugfs_dentry_lru)
419 goto out;
420
421 client->debugfs_caps = debugfs_create_file("caps",
422 0400,
423 client->debugfs_dir,
424 client,
425 &caps_show_fops);
426 if (!client->debugfs_caps)
427 goto out;
428
429 client->debugfs_congestion_kb = debugfs_create_file("writeback_congestion_kb",
430 0600,
431 client->debugfs_dir,
432 client,
433 &congestion_kb_fops);
434 if (!client->debugfs_congestion_kb)
435 goto out;
436
437 sprintf(name, "../../bdi/%s", dev_name(client->sb->s_bdi->dev));
438 client->debugfs_bdi = debugfs_create_symlink("bdi", client->debugfs_dir,
439 name);
440
441 return 0;
442
443out:
444 ceph_debugfs_client_cleanup(client);
445 return ret;
446}
447
448void ceph_debugfs_client_cleanup(struct ceph_client *client)
449{
450 debugfs_remove(client->debugfs_bdi);
451 debugfs_remove(client->debugfs_caps);
452 debugfs_remove(client->debugfs_dentry_lru);
453 debugfs_remove(client->debugfs_osdmap);
454 debugfs_remove(client->debugfs_mdsmap);
455 debugfs_remove(client->debugfs_monmap);
456 debugfs_remove(client->osdc.debugfs_file);
457 debugfs_remove(client->mdsc.debugfs_file);
458 debugfs_remove(client->monc.debugfs_file);
459 debugfs_remove(client->debugfs_congestion_kb);
460 debugfs_remove(client->debugfs_dir);
461}
462
463#else // CONFIG_DEBUG_FS
464
465int __init ceph_debugfs_init(void)
466{
467 return 0;
468}
469
470void ceph_debugfs_cleanup(void)
471{
472}
473
474int ceph_debugfs_client_init(struct ceph_client *client)
475{
476 return 0;
477}
478
479void ceph_debugfs_client_cleanup(struct ceph_client *client)
480{
481}
482
483#endif // CONFIG_DEBUG_FS
generated by cgit v1.2.2 (git 2.25.0) at 2025-01-11 08:48:36 -0500