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
11#include <linux/ceph/libceph.h>
12#include <linux/ceph/mon_client.h>
13#include <linux/ceph/auth.h>
14#include <linux/ceph/debugfs.h>
15
16#include "super.h"
17
18#ifdef CONFIG_DEBUG_FS
19
20#include "mds_client.h"
21
22static int mdsmap_show(struct seq_file *s, void *p)
23{
24 int i;
25 struct ceph_fs_client *fsc = s->private;
26 struct ceph_mdsmap *mdsmap;
27
28 if (!fsc->mdsc || !fsc->mdsc->mdsmap)
29 return 0;
30 mdsmap = fsc->mdsc->mdsmap;
31 seq_printf(s, "epoch %d\n", mdsmap->m_epoch);
32 seq_printf(s, "root %d\n", mdsmap->m_root);
33 seq_printf(s, "max_mds %d\n", mdsmap->m_max_mds);
34 seq_printf(s, "session_timeout %d\n", mdsmap->m_session_timeout);
35 seq_printf(s, "session_autoclose %d\n", mdsmap->m_session_autoclose);
36 for (i = 0; i < mdsmap->possible_max_rank; i++) {
37 struct ceph_entity_addr *addr = &mdsmap->m_info[i].addr;
38 int state = mdsmap->m_info[i].state;
39 seq_printf(s, "\tmds%d\t%s\t(%s)\n", i,
40 ceph_pr_addr(addr),
41 ceph_mds_state_name(state));
42 }
43 return 0;
44}
45
46
47
48
49static int mdsc_show(struct seq_file *s, void *p)
50{
51 struct ceph_fs_client *fsc = s->private;
52 struct ceph_mds_client *mdsc = fsc->mdsc;
53 struct ceph_mds_request *req;
54 struct rb_node *rp;
55 int pathlen = 0;
56 u64 pathbase;
57 char *path;
58
59 mutex_lock(&mdsc->mutex);
60 for (rp = rb_first(&mdsc->request_tree); rp; rp = rb_next(rp)) {
61 req = rb_entry(rp, struct ceph_mds_request, r_node);
62
63 if (req->r_request && req->r_session)
64 seq_printf(s, "%lld\tmds%d\t", req->r_tid,
65 req->r_session->s_mds);
66 else if (!req->r_request)
67 seq_printf(s, "%lld\t(no request)\t", req->r_tid);
68 else
69 seq_printf(s, "%lld\t(no session)\t", req->r_tid);
70
71 seq_printf(s, "%s", ceph_mds_op_name(req->r_op));
72
73 if (test_bit(CEPH_MDS_R_GOT_UNSAFE, &req->r_req_flags))
74 seq_puts(s, "\t(unsafe)");
75 else
76 seq_puts(s, "\t");
77
78 if (req->r_inode) {
79 seq_printf(s, " #%llx", ceph_ino(req->r_inode));
80 } else if (req->r_dentry) {
81 path = ceph_mdsc_build_path(req->r_dentry, &pathlen,
82 &pathbase, 0);
83 if (IS_ERR(path))
84 path = NULL;
85 spin_lock(&req->r_dentry->d_lock);
86 seq_printf(s, " #%llx/%pd (%s)",
87 ceph_ino(d_inode(req->r_dentry->d_parent)),
88 req->r_dentry,
89 path ? path : "");
90 spin_unlock(&req->r_dentry->d_lock);
91 ceph_mdsc_free_path(path, pathlen);
92 } else if (req->r_path1) {
93 seq_printf(s, " #%llx/%s", req->r_ino1.ino,
94 req->r_path1);
95 } else {
96 seq_printf(s, " #%llx", req->r_ino1.ino);
97 }
98
99 if (req->r_old_dentry) {
100 path = ceph_mdsc_build_path(req->r_old_dentry, &pathlen,
101 &pathbase, 0);
102 if (IS_ERR(path))
103 path = NULL;
104 spin_lock(&req->r_old_dentry->d_lock);
105 seq_printf(s, " #%llx/%pd (%s)",
106 req->r_old_dentry_dir ?
107 ceph_ino(req->r_old_dentry_dir) : 0,
108 req->r_old_dentry,
109 path ? path : "");
110 spin_unlock(&req->r_old_dentry->d_lock);
111 ceph_mdsc_free_path(path, pathlen);
112 } else if (req->r_path2 && req->r_op != CEPH_MDS_OP_SYMLINK) {
113 if (req->r_ino2.ino)
114 seq_printf(s, " #%llx/%s", req->r_ino2.ino,
115 req->r_path2);
116 else
117 seq_printf(s, " %s", req->r_path2);
118 }
119
120 seq_puts(s, "\n");
121 }
122 mutex_unlock(&mdsc->mutex);
123
124 return 0;
125}
126
127static int caps_show_cb(struct inode *inode, struct ceph_cap *cap, void *p)
128{
129 struct seq_file *s = p;
130
131 seq_printf(s, "0x%-17llx%-17s%-17s\n", ceph_ino(inode),
132 ceph_cap_string(cap->issued),
133 ceph_cap_string(cap->implemented));
134 return 0;
135}
136
137static int caps_show(struct seq_file *s, void *p)
138{
139 struct ceph_fs_client *fsc = s->private;
140 struct ceph_mds_client *mdsc = fsc->mdsc;
141 int total, avail, used, reserved, min, i;
142 struct cap_wait *cw;
143
144 ceph_reservation_status(fsc, &total, &avail, &used, &reserved, &min);
145 seq_printf(s, "total\t\t%d\n"
146 "avail\t\t%d\n"
147 "used\t\t%d\n"
148 "reserved\t%d\n"
149 "min\t\t%d\n\n",
150 total, avail, used, reserved, min);
151 seq_printf(s, "ino issued implemented\n");
152 seq_printf(s, "-----------------------------------------------\n");
153
154 mutex_lock(&mdsc->mutex);
155 for (i = 0; i < mdsc->max_sessions; i++) {
156 struct ceph_mds_session *session;
157
158 session = __ceph_lookup_mds_session(mdsc, i);
159 if (!session)
160 continue;
161 mutex_unlock(&mdsc->mutex);
162 mutex_lock(&session->s_mutex);
163 ceph_iterate_session_caps(session, caps_show_cb, s);
164 mutex_unlock(&session->s_mutex);
165 ceph_put_mds_session(session);
166 mutex_lock(&mdsc->mutex);
167 }
168 mutex_unlock(&mdsc->mutex);
169
170 seq_printf(s, "\n\nWaiters:\n--------\n");
171 seq_printf(s, "tgid ino need want\n");
172 seq_printf(s, "-----------------------------------------------------\n");
173
174 spin_lock(&mdsc->caps_list_lock);
175 list_for_each_entry(cw, &mdsc->cap_wait_list, list) {
176 seq_printf(s, "%-13d0x%-17llx%-17s%-17s\n", cw->tgid, cw->ino,
177 ceph_cap_string(cw->need),
178 ceph_cap_string(cw->want));
179 }
180 spin_unlock(&mdsc->caps_list_lock);
181
182 return 0;
183}
184
185static int mds_sessions_show(struct seq_file *s, void *ptr)
186{
187 struct ceph_fs_client *fsc = s->private;
188 struct ceph_mds_client *mdsc = fsc->mdsc;
189 struct ceph_auth_client *ac = fsc->client->monc.auth;
190 struct ceph_options *opt = fsc->client->options;
191 int mds = -1;
192
193 mutex_lock(&mdsc->mutex);
194
195
196 seq_printf(s, "global_id %llu\n", ac->global_id);
197
198
199 seq_printf(s, "name \"%s\"\n", opt->name ? opt->name : "");
200
201
202 for (mds = 0; mds < mdsc->max_sessions; mds++) {
203 struct ceph_mds_session *session =
204 __ceph_lookup_mds_session(mdsc, mds);
205 if (!session) {
206 continue;
207 }
208 mutex_unlock(&mdsc->mutex);
209 seq_printf(s, "mds.%d %s\n",
210 session->s_mds,
211 ceph_session_state_name(session->s_state));
212
213 ceph_put_mds_session(session);
214 mutex_lock(&mdsc->mutex);
215 }
216 mutex_unlock(&mdsc->mutex);
217
218 return 0;
219}
220
221DEFINE_SHOW_ATTRIBUTE(mdsmap);
222DEFINE_SHOW_ATTRIBUTE(mdsc);
223DEFINE_SHOW_ATTRIBUTE(caps);
224DEFINE_SHOW_ATTRIBUTE(mds_sessions);
225
226
227
228
229
230static int congestion_kb_set(void *data, u64 val)
231{
232 struct ceph_fs_client *fsc = (struct ceph_fs_client *)data;
233
234 fsc->mount_options->congestion_kb = (int)val;
235 return 0;
236}
237
238static int congestion_kb_get(void *data, u64 *val)
239{
240 struct ceph_fs_client *fsc = (struct ceph_fs_client *)data;
241
242 *val = (u64)fsc->mount_options->congestion_kb;
243 return 0;
244}
245
246DEFINE_SIMPLE_ATTRIBUTE(congestion_kb_fops, congestion_kb_get,
247 congestion_kb_set, "%llu\n");
248
249
250void ceph_fs_debugfs_cleanup(struct ceph_fs_client *fsc)
251{
252 dout("ceph_fs_debugfs_cleanup\n");
253 debugfs_remove(fsc->debugfs_bdi);
254 debugfs_remove(fsc->debugfs_congestion_kb);
255 debugfs_remove(fsc->debugfs_mdsmap);
256 debugfs_remove(fsc->debugfs_mds_sessions);
257 debugfs_remove(fsc->debugfs_caps);
258 debugfs_remove(fsc->debugfs_mdsc);
259}
260
261void ceph_fs_debugfs_init(struct ceph_fs_client *fsc)
262{
263 char name[100];
264
265 dout("ceph_fs_debugfs_init\n");
266 fsc->debugfs_congestion_kb =
267 debugfs_create_file("writeback_congestion_kb",
268 0600,
269 fsc->client->debugfs_dir,
270 fsc,
271 &congestion_kb_fops);
272
273 snprintf(name, sizeof(name), "../../bdi/%s",
274 bdi_dev_name(fsc->sb->s_bdi));
275 fsc->debugfs_bdi =
276 debugfs_create_symlink("bdi",
277 fsc->client->debugfs_dir,
278 name);
279
280 fsc->debugfs_mdsmap = debugfs_create_file("mdsmap",
281 0400,
282 fsc->client->debugfs_dir,
283 fsc,
284 &mdsmap_fops);
285
286 fsc->debugfs_mds_sessions = debugfs_create_file("mds_sessions",
287 0400,
288 fsc->client->debugfs_dir,
289 fsc,
290 &mds_sessions_fops);
291
292 fsc->debugfs_mdsc = debugfs_create_file("mdsc",
293 0400,
294 fsc->client->debugfs_dir,
295 fsc,
296 &mdsc_fops);
297
298 fsc->debugfs_caps = debugfs_create_file("caps",
299 0400,
300 fsc->client->debugfs_dir,
301 fsc,
302 &caps_fops);
303}
304
305
306#else
307
308void ceph_fs_debugfs_init(struct ceph_fs_client *fsc)
309{
310}
311
312void ceph_fs_debugfs_cleanup(struct ceph_fs_client *fsc)
313{
314}
315
316#endif
317
