1 #include "ceph_debug.h"
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>
10 #include "mds_client.h"
11 #include "mon_client.h"
14 #ifdef CONFIG_DEBUG_FS
17 * Implement /sys/kernel/debug/ceph fun
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
31 static struct dentry *ceph_debugfs_dir;
33 static int monmap_show(struct seq_file *s, void *p)
36 struct ceph_client *client = s->private;
38 if (client->monc.monmap == NULL)
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];
46 seq_printf(s, "\t%s%lld\t%s\n",
47 ENTITY_NAME(inst->name),
48 pr_addr(&inst->addr.in_addr));
53 static int mdsmap_show(struct seq_file *s, void *p)
56 struct ceph_client *client = s->private;
58 if (client->mdsc.mdsmap == NULL)
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;
71 seq_printf(s, "\tmds%d\t%s\t(%s)\n", i, pr_addr(&addr->in_addr),
72 ceph_mds_state_name(state));
77 static int osdmap_show(struct seq_file *s, void *p)
80 struct ceph_client *client = s->private;
83 if (client->osdc.osdmap == NULL)
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) ?
89 (client->osdc.osdmap->flags & CEPH_OSDMAP_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);
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];
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));
112 static int monc_show(struct seq_file *s, void *p)
114 struct ceph_client *client = s->private;
115 struct ceph_mon_statfs_request *req;
116 struct ceph_mon_client *monc = &client->monc;
119 mutex_lock(&monc->mutex);
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");
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);
133 mutex_unlock(&monc->mutex);
137 static int mdsc_show(struct seq_file *s, void *p)
139 struct ceph_client *client = s->private;
140 struct ceph_mds_client *mdsc = &client->mdsc;
141 struct ceph_mds_request *req;
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);
152 seq_printf(s, "%lld\tmds%d\t", req->r_tid, req->r_mds);
154 seq_printf(s, "%lld\t(no request)\t", req->r_tid);
156 seq_printf(s, "%s", ceph_mds_op_name(req->r_op));
158 if (req->r_got_unsafe)
159 seq_printf(s, "\t(unsafe)");
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,
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,
174 spin_unlock(&req->r_dentry->d_lock);
176 } else if (req->r_path1) {
177 seq_printf(s, " #%llx/%s", req->r_ino1.ino,
181 if (req->r_old_dentry) {
182 path = ceph_mdsc_build_path(req->r_old_dentry, &pathlen,
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,
190 spin_unlock(&req->r_old_dentry->d_lock);
192 } else if (req->r_path2) {
194 seq_printf(s, " #%llx/%s", req->r_ino2.ino,
197 seq_printf(s, " %s", req->r_path2);
202 mutex_unlock(&mdsc->mutex);
207 static int osdc_show(struct seq_file *s, void *pp)
209 struct ceph_client *client = s->private;
210 struct ceph_osd_client *osdc = &client->osdc;
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;
222 req = rb_entry(p, struct ceph_osd_request, r_node);
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));
229 head = req->r_request->front.iov_base;
230 op = (void *)(head + 1);
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));
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));
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));
252 mutex_unlock(&osdc->request_mutex);
256 static int caps_show(struct seq_file *s, void *p)
258 struct ceph_client *client = p;
259 int total, avail, used, reserved, min;
261 ceph_reservation_status(client, &total, &avail, &used, &reserved, &min);
262 seq_printf(s, "total\t\t%d\n"
267 total, avail, used, reserved, min);
271 static int dentry_lru_show(struct seq_file *s, void *ptr)
273 struct ceph_client *client = s->private;
274 struct ceph_mds_client *mdsc = &client->mdsc;
275 struct ceph_dentry_info *di;
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);
283 spin_unlock(&mdsc->dentry_lru_lock);
288 #define DEFINE_SHOW_FUNC(name) \
289 static int name##_open(struct inode *inode, struct file *file) \
291 struct seq_file *sf; \
294 ret = single_open(file, name, NULL); \
295 sf = file->private_data; \
296 sf->private = inode->i_private; \
300 static const struct file_operations name##_fops = { \
301 .open = name##_open, \
303 .llseek = seq_lseek, \
304 .release = single_release, \
307 DEFINE_SHOW_FUNC(monmap_show)
308 DEFINE_SHOW_FUNC(mdsmap_show)
309 DEFINE_SHOW_FUNC(osdmap_show)
310 DEFINE_SHOW_FUNC(monc_show)
311 DEFINE_SHOW_FUNC(mdsc_show)
312 DEFINE_SHOW_FUNC(osdc_show)
313 DEFINE_SHOW_FUNC(dentry_lru_show)
314 DEFINE_SHOW_FUNC(caps_show)
316 static int congestion_kb_set(void *data, u64 val)
318 struct ceph_client *client = (struct ceph_client *)data;
321 client->mount_args->congestion_kb = (int)val;
326 static int congestion_kb_get(void *data, u64 *val)
328 struct ceph_client *client = (struct ceph_client *)data;
331 *val = (u64)client->mount_args->congestion_kb;
337 DEFINE_SIMPLE_ATTRIBUTE(congestion_kb_fops, congestion_kb_get,
338 congestion_kb_set, "%llu\n");
340 int __init ceph_debugfs_init(void)
342 ceph_debugfs_dir = debugfs_create_dir("ceph", NULL);
343 if (!ceph_debugfs_dir)
348 void ceph_debugfs_cleanup(void)
350 debugfs_remove(ceph_debugfs_dir);
353 int ceph_debugfs_client_init(struct ceph_client *client)
358 snprintf(name, sizeof(name), FSID_FORMAT ".client%lld",
359 PR_FSID(&client->fsid), client->monc.auth->global_id);
361 client->debugfs_dir = debugfs_create_dir(name, ceph_debugfs_dir);
362 if (!client->debugfs_dir)
365 client->monc.debugfs_file = debugfs_create_file("monc",
370 if (!client->monc.debugfs_file)
373 client->mdsc.debugfs_file = debugfs_create_file("mdsc",
378 if (!client->mdsc.debugfs_file)
381 client->osdc.debugfs_file = debugfs_create_file("osdc",
386 if (!client->osdc.debugfs_file)
389 client->debugfs_monmap = debugfs_create_file("monmap",
394 if (!client->debugfs_monmap)
397 client->debugfs_mdsmap = debugfs_create_file("mdsmap",
402 if (!client->debugfs_mdsmap)
405 client->debugfs_osdmap = debugfs_create_file("osdmap",
410 if (!client->debugfs_osdmap)
413 client->debugfs_dentry_lru = debugfs_create_file("dentry_lru",
417 &dentry_lru_show_fops);
418 if (!client->debugfs_dentry_lru)
421 client->debugfs_caps = debugfs_create_file("caps",
426 if (!client->debugfs_caps)
429 client->debugfs_congestion_kb = debugfs_create_file("writeback_congestion_kb",
433 &congestion_kb_fops);
434 if (!client->debugfs_congestion_kb)
437 sprintf(name, "../../bdi/%s", dev_name(client->sb->s_bdi->dev));
438 client->debugfs_bdi = debugfs_create_symlink("bdi", client->debugfs_dir,
444 ceph_debugfs_client_cleanup(client);
448 void ceph_debugfs_client_cleanup(struct ceph_client *client)
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);
463 #else // CONFIG_DEBUG_FS
465 int __init ceph_debugfs_init(void)
470 void ceph_debugfs_cleanup(void)
474 int ceph_debugfs_client_init(struct ceph_client *client)
479 void ceph_debugfs_client_cleanup(struct ceph_client *client)
483 #endif // CONFIG_DEBUG_FS