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#include "super.h"
16
17#ifdef CONFIG_DEBUG_FS
18
19#include "mds_client.h"
20
21static int mdsmap_show(struct seq_file *s, void *p)
22{
23 int i;
24 struct ceph_fs_client *fsc = s->private;
25 struct ceph_mdsmap *mdsmap;
26
27 if (fsc->mdsc == NULL || fsc->mdsc->mdsmap == NULL)
28 return 0;
29 mdsmap = fsc->mdsc->mdsmap;
30 seq_printf(s, "epoch %d\n", mdsmap->m_epoch);
31 seq_printf(s, "root %d\n", mdsmap->m_root);
32 seq_printf(s, "max_mds %d\n", mdsmap->m_max_mds);
33 seq_printf(s, "session_timeout %d\n", mdsmap->m_session_timeout);
34 seq_printf(s, "session_autoclose %d\n", mdsmap->m_session_autoclose);
35 for (i = 0; i < mdsmap->m_num_mds; i++) {
36 struct ceph_entity_addr *addr = &mdsmap->m_info[i].addr;
37 int state = mdsmap->m_info[i].state;
38 seq_printf(s, "\tmds%d\t%s\t(%s)\n", i,
39 ceph_pr_addr(&addr->in_addr),
40 ceph_mds_state_name(state));
41 }
42 return 0;
43}
44
45
46
47
48static int mdsc_show(struct seq_file *s, void *p)
49{
50 struct ceph_fs_client *fsc = s->private;
51 struct ceph_mds_client *mdsc = fsc->mdsc;
52 struct ceph_mds_request *req;
53 struct rb_node *rp;
54 int pathlen;
55 u64 pathbase;
56 char *path;
57
58 mutex_lock(&mdsc->mutex);
59 for (rp = rb_first(&mdsc->request_tree); rp; rp = rb_next(rp)) {
60 req = rb_entry(rp, struct ceph_mds_request, r_node);
61
62 if (req->r_request && req->r_session)
63 seq_printf(s, "%lld\tmds%d\t", req->r_tid,
64 req->r_session->s_mds);
65 else if (!req->r_request)
66 seq_printf(s, "%lld\t(no request)\t", req->r_tid);
67 else
68 seq_printf(s, "%lld\t(no session)\t", req->r_tid);
69
70 seq_printf(s, "%s", ceph_mds_op_name(req->r_op));
71
72 if (test_bit(CEPH_MDS_R_GOT_UNSAFE, &req->r_req_flags))
73 seq_puts(s, "\t(unsafe)");
74 else
75 seq_puts(s, "\t");
76
77 if (req->r_inode) {
78 seq_printf(s, " #%llx", ceph_ino(req->r_inode));
79 } else if (req->r_dentry) {
80 path = ceph_mdsc_build_path(req->r_dentry, &pathlen,
81 &pathbase, 0);
82 if (IS_ERR(path))
83 path = NULL;
84 spin_lock(&req->r_dentry->d_lock);
85 seq_printf(s, " #%llx/%pd (%s)",
86 ceph_ino(d_inode(req->r_dentry->d_parent)),
87 req->r_dentry,
88 path ? path : "");
89 spin_unlock(&req->r_dentry->d_lock);
90 kfree(path);
91 } else if (req->r_path1) {
92 seq_printf(s, " #%llx/%s", req->r_ino1.ino,
93 req->r_path1);
94 } else {
95 seq_printf(s, " #%llx", req->r_ino1.ino);
96 }
97
98 if (req->r_old_dentry) {
99 path = ceph_mdsc_build_path(req->r_old_dentry, &pathlen,
100 &pathbase, 0);
101 if (IS_ERR(path))
102 path = NULL;
103 spin_lock(&req->r_old_dentry->d_lock);
104 seq_printf(s, " #%llx/%pd (%s)",
105 req->r_old_dentry_dir ?
106 ceph_ino(req->r_old_dentry_dir) : 0,
107 req->r_old_dentry,
108 path ? path : "");
109 spin_unlock(&req->r_old_dentry->d_lock);
110 kfree(path);
111 } else if (req->r_path2 && req->r_op != CEPH_MDS_OP_SYMLINK) {
112 if (req->r_ino2.ino)
113 seq_printf(s, " #%llx/%s", req->r_ino2.ino,
114 req->r_path2);
115 else
116 seq_printf(s, " %s", req->r_path2);
117 }
118
119 seq_puts(s, "\n");
120 }
121 mutex_unlock(&mdsc->mutex);
122
123 return 0;
124}
125
126static int caps_show(struct seq_file *s, void *p)
127{
128 struct ceph_fs_client *fsc = s->private;
129 int total, avail, used, reserved, min;
130
131 ceph_reservation_status(fsc, &total, &avail, &used, &reserved, &min);
132 seq_printf(s, "total\t\t%d\n"
133 "avail\t\t%d\n"
134 "used\t\t%d\n"
135 "reserved\t%d\n"
136 "min\t%d\n",
137 total, avail, used, reserved, min);
138 return 0;
139}
140
141static int dentry_lru_show(struct seq_file *s, void *ptr)
142{
143 struct ceph_fs_client *fsc = s->private;
144 struct ceph_mds_client *mdsc = fsc->mdsc;
145 struct ceph_dentry_info *di;
146
147 spin_lock(&mdsc->dentry_lru_lock);
148 list_for_each_entry(di, &mdsc->dentry_lru, lru) {
149 struct dentry *dentry = di->dentry;
150 seq_printf(s, "%p %p\t%pd\n",
151 di, dentry, dentry);
152 }
153 spin_unlock(&mdsc->dentry_lru_lock);
154
155 return 0;
156}
157
158static int mds_sessions_show(struct seq_file *s, void *ptr)
159{
160 struct ceph_fs_client *fsc = s->private;
161 struct ceph_mds_client *mdsc = fsc->mdsc;
162 struct ceph_auth_client *ac = fsc->client->monc.auth;
163 struct ceph_options *opt = fsc->client->options;
164 int mds = -1;
165
166 mutex_lock(&mdsc->mutex);
167
168
169 seq_printf(s, "global_id %llu\n", ac->global_id);
170
171
172 seq_printf(s, "name \"%s\"\n", opt->name ? opt->name : "");
173
174
175 for (mds = 0; mds < mdsc->max_sessions; mds++) {
176 struct ceph_mds_session *session =
177 __ceph_lookup_mds_session(mdsc, mds);
178 if (!session) {
179 continue;
180 }
181 mutex_unlock(&mdsc->mutex);
182 seq_printf(s, "mds.%d %s\n",
183 session->s_mds,
184 ceph_session_state_name(session->s_state));
185
186 ceph_put_mds_session(session);
187 mutex_lock(&mdsc->mutex);
188 }
189 mutex_unlock(&mdsc->mutex);
190
191 return 0;
192}
193
194CEPH_DEFINE_SHOW_FUNC(mdsmap_show)
195CEPH_DEFINE_SHOW_FUNC(mdsc_show)
196CEPH_DEFINE_SHOW_FUNC(caps_show)
197CEPH_DEFINE_SHOW_FUNC(dentry_lru_show)
198CEPH_DEFINE_SHOW_FUNC(mds_sessions_show)
199
200
201
202
203
204static int congestion_kb_set(void *data, u64 val)
205{
206 struct ceph_fs_client *fsc = (struct ceph_fs_client *)data;
207
208 fsc->mount_options->congestion_kb = (int)val;
209 return 0;
210}
211
212static int congestion_kb_get(void *data, u64 *val)
213{
214 struct ceph_fs_client *fsc = (struct ceph_fs_client *)data;
215
216 *val = (u64)fsc->mount_options->congestion_kb;
217 return 0;
218}
219
220DEFINE_SIMPLE_ATTRIBUTE(congestion_kb_fops, congestion_kb_get,
221 congestion_kb_set, "%llu\n");
222
223
224void ceph_fs_debugfs_cleanup(struct ceph_fs_client *fsc)
225{
226 dout("ceph_fs_debugfs_cleanup\n");
227 debugfs_remove(fsc->debugfs_bdi);
228 debugfs_remove(fsc->debugfs_congestion_kb);
229 debugfs_remove(fsc->debugfs_mdsmap);
230 debugfs_remove(fsc->debugfs_mds_sessions);
231 debugfs_remove(fsc->debugfs_caps);
232 debugfs_remove(fsc->debugfs_mdsc);
233 debugfs_remove(fsc->debugfs_dentry_lru);
234}
235
236int ceph_fs_debugfs_init(struct ceph_fs_client *fsc)
237{
238 char name[100];
239 int err = -ENOMEM;
240
241 dout("ceph_fs_debugfs_init\n");
242 BUG_ON(!fsc->client->debugfs_dir);
243 fsc->debugfs_congestion_kb =
244 debugfs_create_file("writeback_congestion_kb",
245 0600,
246 fsc->client->debugfs_dir,
247 fsc,
248 &congestion_kb_fops);
249 if (!fsc->debugfs_congestion_kb)
250 goto out;
251
252 snprintf(name, sizeof(name), "../../bdi/%s",
253 dev_name(fsc->sb->s_bdi->dev));
254 fsc->debugfs_bdi =
255 debugfs_create_symlink("bdi",
256 fsc->client->debugfs_dir,
257 name);
258 if (!fsc->debugfs_bdi)
259 goto out;
260
261 fsc->debugfs_mdsmap = debugfs_create_file("mdsmap",
262 0600,
263 fsc->client->debugfs_dir,
264 fsc,
265 &mdsmap_show_fops);
266 if (!fsc->debugfs_mdsmap)
267 goto out;
268
269 fsc->debugfs_mds_sessions = debugfs_create_file("mds_sessions",
270 0600,
271 fsc->client->debugfs_dir,
272 fsc,
273 &mds_sessions_show_fops);
274 if (!fsc->debugfs_mds_sessions)
275 goto out;
276
277 fsc->debugfs_mdsc = debugfs_create_file("mdsc",
278 0600,
279 fsc->client->debugfs_dir,
280 fsc,
281 &mdsc_show_fops);
282 if (!fsc->debugfs_mdsc)
283 goto out;
284
285 fsc->debugfs_caps = debugfs_create_file("caps",
286 0400,
287 fsc->client->debugfs_dir,
288 fsc,
289 &caps_show_fops);
290 if (!fsc->debugfs_caps)
291 goto out;
292
293 fsc->debugfs_dentry_lru = debugfs_create_file("dentry_lru",
294 0600,
295 fsc->client->debugfs_dir,
296 fsc,
297 &dentry_lru_show_fops);
298 if (!fsc->debugfs_dentry_lru)
299 goto out;
300
301 return 0;
302
303out:
304 ceph_fs_debugfs_cleanup(fsc);
305 return err;
306}
307
308
309#else
310
311int ceph_fs_debugfs_init(struct ceph_fs_client *fsc)
312{
313 return 0;
314}
315
316void ceph_fs_debugfs_cleanup(struct ceph_fs_client *fsc)
317{
318}
319
320#endif
321
