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-rw-r--r--fs/ceph/debugfs.c484
1 files changed, 484 insertions, 0 deletions
diff --git a/fs/ceph/debugfs.c b/fs/ceph/debugfs.c
new file mode 100644
index 000000000000..f7048da92acc
--- /dev/null
+++ b/fs/ceph/debugfs.c
@@ -0,0 +1,484 @@
1#include "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 "super.h"
11#include "mds_client.h"
12#include "mon_client.h"
13#include "auth.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 * .../mdsmap - current mdsmap
23 * .../monmap - current monmap
24 * .../osdc - active osd requests
25 * .../mdsc - active mds requests
26 * .../monc - mon client state
27 * .../dentry_lru - dump contents of dentry lru
28 * .../caps - expose cap (reservation) stats
29 * .../bdi - symlink to ../../bdi/something
30 */
31
32static struct dentry *ceph_debugfs_dir;
33
34static int monmap_show(struct seq_file *s, void *p)
35{
36 int i;
37 struct ceph_client *client = s->private;
38
39 if (client->monc.monmap == NULL)
40 return 0;
41
42 seq_printf(s, "epoch %d\n", client->monc.monmap->epoch);
43 for (i = 0; i < client->monc.monmap->num_mon; i++) {
44 struct ceph_entity_inst *inst =
45 &client->monc.monmap->mon_inst[i];
46
47 seq_printf(s, "\t%s%lld\t%s\n",
48 ENTITY_NAME(inst->name),
49 pr_addr(&inst->addr.in_addr));
50 }
51 return 0;
52}
53
54static int mdsmap_show(struct seq_file *s, void *p)
55{
56 int i;
57 struct ceph_client *client = s->private;
58
59 if (client->mdsc.mdsmap == NULL)
60 return 0;
61 seq_printf(s, "epoch %d\n", client->mdsc.mdsmap->m_epoch);
62 seq_printf(s, "root %d\n", client->mdsc.mdsmap->m_root);
63 seq_printf(s, "session_timeout %d\n",
64 client->mdsc.mdsmap->m_session_timeout);
65 seq_printf(s, "session_autoclose %d\n",
66 client->mdsc.mdsmap->m_session_autoclose);
67 for (i = 0; i < client->mdsc.mdsmap->m_max_mds; i++) {
68 struct ceph_entity_addr *addr =
69 &client->mdsc.mdsmap->m_info[i].addr;
70 int state = client->mdsc.mdsmap->m_info[i].state;
71
72 seq_printf(s, "\tmds%d\t%s\t(%s)\n", i, pr_addr(&addr->in_addr),
73 ceph_mds_state_name(state));
74 }
75 return 0;
76}
77
78static int osdmap_show(struct seq_file *s, void *p)
79{
80 int i;
81 struct ceph_client *client = s->private;
82 struct rb_node *n;
83
84 if (client->osdc.osdmap == NULL)
85 return 0;
86 seq_printf(s, "epoch %d\n", client->osdc.osdmap->epoch);
87 seq_printf(s, "flags%s%s\n",
88 (client->osdc.osdmap->flags & CEPH_OSDMAP_NEARFULL) ?
89 " NEARFULL" : "",
90 (client->osdc.osdmap->flags & CEPH_OSDMAP_FULL) ?
91 " FULL" : "");
92 for (n = rb_first(&client->osdc.osdmap->pg_pools); n; n = rb_next(n)) {
93 struct ceph_pg_pool_info *pool =
94 rb_entry(n, struct ceph_pg_pool_info, node);
95 seq_printf(s, "pg_pool %d pg_num %d / %d, lpg_num %d / %d\n",
96 pool->id, pool->v.pg_num, pool->pg_num_mask,
97 pool->v.lpg_num, pool->lpg_num_mask);
98 }
99 for (i = 0; i < client->osdc.osdmap->max_osd; i++) {
100 struct ceph_entity_addr *addr =
101 &client->osdc.osdmap->osd_addr[i];
102 int state = client->osdc.osdmap->osd_state[i];
103 char sb[64];
104
105 seq_printf(s, "\tosd%d\t%s\t%3d%%\t(%s)\n",
106 i, pr_addr(&addr->in_addr),
107 ((client->osdc.osdmap->osd_weight[i]*100) >> 16),
108 ceph_osdmap_state_str(sb, sizeof(sb), state));
109 }
110 return 0;
111}
112
113static int monc_show(struct seq_file *s, void *p)
114{
115 struct ceph_client *client = s->private;
116 struct ceph_mon_statfs_request *req;
117 struct ceph_mon_client *monc = &client->monc;
118 struct rb_node *rp;
119
120 mutex_lock(&monc->mutex);
121
122 if (monc->have_mdsmap)
123 seq_printf(s, "have mdsmap %u\n", (unsigned)monc->have_mdsmap);
124 if (monc->have_osdmap)
125 seq_printf(s, "have osdmap %u\n", (unsigned)monc->have_osdmap);
126 if (monc->want_next_osdmap)
127 seq_printf(s, "want next osdmap\n");
128
129 for (rp = rb_first(&monc->statfs_request_tree); rp; rp = rb_next(rp)) {
130 req = rb_entry(rp, struct ceph_mon_statfs_request, node);
131 seq_printf(s, "%lld statfs\n", req->tid);
132 }
133
134 mutex_unlock(&monc->mutex);
135 return 0;
136}
137
138static int mdsc_show(struct seq_file *s, void *p)
139{
140 struct ceph_client *client = s->private;
141 struct ceph_mds_client *mdsc = &client->mdsc;
142 struct ceph_mds_request *req;
143 struct rb_node *rp;
144 int pathlen;
145 u64 pathbase;
146 char *path;
147
148 mutex_lock(&mdsc->mutex);
149 for (rp = rb_first(&mdsc->request_tree); rp; rp = rb_next(rp)) {
150 req = rb_entry(rp, struct ceph_mds_request, r_node);
151
152 if (req->r_request)
153 seq_printf(s, "%lld\tmds%d\t", req->r_tid, req->r_mds);
154 else
155 seq_printf(s, "%lld\t(no request)\t", req->r_tid);
156
157 seq_printf(s, "%s", ceph_mds_op_name(req->r_op));
158
159 if (req->r_got_unsafe)
160 seq_printf(s, "\t(unsafe)");
161 else
162 seq_printf(s, "\t");
163
164 if (req->r_inode) {
165 seq_printf(s, " #%llx", ceph_ino(req->r_inode));
166 } else if (req->r_dentry) {
167 path = ceph_mdsc_build_path(req->r_dentry, &pathlen,
168 &pathbase, 0);
169 spin_lock(&req->r_dentry->d_lock);
170 seq_printf(s, " #%llx/%.*s (%s)",
171 ceph_ino(req->r_dentry->d_parent->d_inode),
172 req->r_dentry->d_name.len,
173 req->r_dentry->d_name.name,
174 path ? path : "");
175 spin_unlock(&req->r_dentry->d_lock);
176 kfree(path);
177 } else if (req->r_path1) {
178 seq_printf(s, " #%llx/%s", req->r_ino1.ino,
179 req->r_path1);
180 }
181
182 if (req->r_old_dentry) {
183 path = ceph_mdsc_build_path(req->r_old_dentry, &pathlen,
184 &pathbase, 0);
185 spin_lock(&req->r_old_dentry->d_lock);
186 seq_printf(s, " #%llx/%.*s (%s)",
187 ceph_ino(req->r_old_dentry->d_parent->d_inode),
188 req->r_old_dentry->d_name.len,
189 req->r_old_dentry->d_name.name,
190 path ? path : "");
191 spin_unlock(&req->r_old_dentry->d_lock);
192 kfree(path);
193 } else if (req->r_path2) {
194 if (req->r_ino2.ino)
195 seq_printf(s, " #%llx/%s", req->r_ino2.ino,
196 req->r_path2);
197 else
198 seq_printf(s, " %s", req->r_path2);
199 }
200
201 seq_printf(s, "\n");
202 }
203 mutex_unlock(&mdsc->mutex);
204
205 return 0;
206}
207
208static int osdc_show(struct seq_file *s, void *pp)
209{
210 struct ceph_client *client = s->private;
211 struct ceph_osd_client *osdc = &client->osdc;
212 struct rb_node *p;
213
214 mutex_lock(&osdc->request_mutex);
215 for (p = rb_first(&osdc->requests); p; p = rb_next(p)) {
216 struct ceph_osd_request *req;
217 struct ceph_osd_request_head *head;
218 struct ceph_osd_op *op;
219 int num_ops;
220 int opcode, olen;
221 int i;
222
223 req = rb_entry(p, struct ceph_osd_request, r_node);
224
225 seq_printf(s, "%lld\tosd%d\t%d.%x\t", req->r_tid,
226 req->r_osd ? req->r_osd->o_osd : -1,
227 le32_to_cpu(req->r_pgid.pool),
228 le16_to_cpu(req->r_pgid.ps));
229
230 head = req->r_request->front.iov_base;
231 op = (void *)(head + 1);
232
233 num_ops = le16_to_cpu(head->num_ops);
234 olen = le32_to_cpu(head->object_len);
235 seq_printf(s, "%.*s", olen,
236 (const char *)(head->ops + num_ops));
237
238 if (req->r_reassert_version.epoch)
239 seq_printf(s, "\t%u'%llu",
240 (unsigned)le32_to_cpu(req->r_reassert_version.epoch),
241 le64_to_cpu(req->r_reassert_version.version));
242 else
243 seq_printf(s, "\t");
244
245 for (i = 0; i < num_ops; i++) {
246 opcode = le16_to_cpu(op->op);
247 seq_printf(s, "\t%s", ceph_osd_op_name(opcode));
248 op++;
249 }
250
251 seq_printf(s, "\n");
252 }
253 mutex_unlock(&osdc->request_mutex);
254 return 0;
255}
256
257static int caps_show(struct seq_file *s, void *p)
258{
259 struct ceph_client *client = p;
260 int total, avail, used, reserved, min;
261
262 ceph_reservation_status(client, &total, &avail, &used, &reserved, &min);
263 seq_printf(s, "total\t\t%d\n"
264 "avail\t\t%d\n"
265 "used\t\t%d\n"
266 "reserved\t%d\n"
267 "min\t%d\n",
268 total, avail, used, reserved, min);
269 return 0;
270}
271
272static int dentry_lru_show(struct seq_file *s, void *ptr)
273{
274 struct ceph_client *client = s->private;
275 struct ceph_mds_client *mdsc = &client->mdsc;
276 struct ceph_dentry_info *di;
277
278 spin_lock(&mdsc->dentry_lru_lock);
279 list_for_each_entry(di, &mdsc->dentry_lru, lru) {
280 struct dentry *dentry = di->dentry;
281 seq_printf(s, "%p %p\t%.*s\n",
282 di, dentry, dentry->d_name.len, dentry->d_name.name);
283 }
284 spin_unlock(&mdsc->dentry_lru_lock);
285
286 return 0;
287}
288
289#define DEFINE_SHOW_FUNC(name) \
290static int name##_open(struct inode *inode, struct file *file) \
291{ \
292 struct seq_file *sf; \
293 int ret; \
294 \
295 ret = single_open(file, name, NULL); \
296 sf = file->private_data; \
297 sf->private = inode->i_private; \
298 return ret; \
299} \
300 \
301static const struct file_operations name##_fops = { \
302 .open = name##_open, \
303 .read = seq_read, \
304 .llseek = seq_lseek, \
305 .release = single_release, \
306};
307
308DEFINE_SHOW_FUNC(monmap_show)
309DEFINE_SHOW_FUNC(mdsmap_show)
310DEFINE_SHOW_FUNC(osdmap_show)
311DEFINE_SHOW_FUNC(monc_show)
312DEFINE_SHOW_FUNC(mdsc_show)
313DEFINE_SHOW_FUNC(osdc_show)
314DEFINE_SHOW_FUNC(dentry_lru_show)
315DEFINE_SHOW_FUNC(caps_show)
316
317static int congestion_kb_set(void *data, u64 val)
318{
319 struct ceph_client *client = (struct ceph_client *)data;
320
321 if (client)
322 client->mount_args->congestion_kb = (int)val;
323
324 return 0;
325}
326
327static int congestion_kb_get(void *data, u64 *val)
328{
329 struct ceph_client *client = (struct ceph_client *)data;
330
331 if (client)
332 *val = (u64)client->mount_args->congestion_kb;
333
334 return 0;
335}
336
337
338DEFINE_SIMPLE_ATTRIBUTE(congestion_kb_fops, congestion_kb_get,
339 congestion_kb_set, "%llu\n");
340
341int __init ceph_debugfs_init(void)
342{
343 ceph_debugfs_dir = debugfs_create_dir("ceph", NULL);
344 if (!ceph_debugfs_dir)
345 return -ENOMEM;
346 return 0;
347}
348
349void ceph_debugfs_cleanup(void)
350{
351 debugfs_remove(ceph_debugfs_dir);
352}
353
354int ceph_debugfs_client_init(struct ceph_client *client)
355{
356 int ret = 0;
357 char name[80];
358
359 snprintf(name, sizeof(name), FSID_FORMAT ".client%lld",
360 PR_FSID(&client->fsid), client->monc.auth->global_id);
361
362 client->debugfs_dir = debugfs_create_dir(name, ceph_debugfs_dir);
363 if (!client->debugfs_dir)
364 goto out;
365
366 client->monc.debugfs_file = debugfs_create_file("monc",
367 0600,
368 client->debugfs_dir,
369 client,
370 &monc_show_fops);
371 if (!client->monc.debugfs_file)
372 goto out;
373
374 client->mdsc.debugfs_file = debugfs_create_file("mdsc",
375 0600,
376 client->debugfs_dir,
377 client,
378 &mdsc_show_fops);
379 if (!client->mdsc.debugfs_file)
380 goto out;
381
382 client->osdc.debugfs_file = debugfs_create_file("osdc",
383 0600,
384 client->debugfs_dir,
385 client,
386 &osdc_show_fops);
387 if (!client->osdc.debugfs_file)
388 goto out;
389
390 client->debugfs_monmap = debugfs_create_file("monmap",
391 0600,
392 client->debugfs_dir,
393 client,
394 &monmap_show_fops);
395 if (!client->debugfs_monmap)
396 goto out;
397
398 client->debugfs_mdsmap = debugfs_create_file("mdsmap",
399 0600,
400 client->debugfs_dir,
401 client,
402 &mdsmap_show_fops);
403 if (!client->debugfs_mdsmap)
404 goto out;
405
406 client->debugfs_osdmap = debugfs_create_file("osdmap",
407 0600,
408 client->debugfs_dir,
409 client,
410 &osdmap_show_fops);
411 if (!client->debugfs_osdmap)
412 goto out;
413
414 client->debugfs_dentry_lru = debugfs_create_file("dentry_lru",
415 0600,
416 client->debugfs_dir,
417 client,
418 &dentry_lru_show_fops);
419 if (!client->debugfs_dentry_lru)
420 goto out;
421
422 client->debugfs_caps = debugfs_create_file("caps",
423 0400,
424 client->debugfs_dir,
425 client,
426 &caps_show_fops);
427 if (!client->debugfs_caps)
428 goto out;
429
430 client->debugfs_congestion_kb = debugfs_create_file("writeback_congestion_kb",
431 0600,
432 client->debugfs_dir,
433 client,
434 &congestion_kb_fops);
435 if (!client->debugfs_congestion_kb)
436 goto out;
437
438 sprintf(name, "../../bdi/%s", dev_name(client->sb->s_bdi->dev));
439 client->debugfs_bdi = debugfs_create_symlink("bdi", client->debugfs_dir,
440 name);
441
442 return 0;
443
444out:
445 ceph_debugfs_client_cleanup(client);
446 return ret;
447}
448
449void ceph_debugfs_client_cleanup(struct ceph_client *client)
450{
451 debugfs_remove(client->debugfs_bdi);
452 debugfs_remove(client->debugfs_caps);
453 debugfs_remove(client->debugfs_dentry_lru);
454 debugfs_remove(client->debugfs_osdmap);
455 debugfs_remove(client->debugfs_mdsmap);
456 debugfs_remove(client->debugfs_monmap);
457 debugfs_remove(client->osdc.debugfs_file);
458 debugfs_remove(client->mdsc.debugfs_file);
459 debugfs_remove(client->monc.debugfs_file);
460 debugfs_remove(client->debugfs_congestion_kb);
461 debugfs_remove(client->debugfs_dir);
462}
463
464#else // CONFIG_DEBUG_FS
465
466int __init ceph_debugfs_init(void)
467{
468 return 0;
469}
470
471void ceph_debugfs_cleanup(void)
472{
473}
474
475int ceph_debugfs_client_init(struct ceph_client *client)
476{
477 return 0;
478}
479
480void ceph_debugfs_client_cleanup(struct ceph_client *client)
481{
482}
483
484#endif // CONFIG_DEBUG_FS
generated by cgit v1.2.2 (git 2.25.0) at 2025-02-03 18:13:56 -0500