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Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -07001#include <linux/ceph/ceph_debug.h>
Sage Weil76aa8442009-10-06 11:31:14 -07002
Sage Weil06edf042009-12-15 14:44:32 -08003#include <linux/device.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +09004#include <linux/slab.h>
Sage Weil76aa8442009-10-06 11:31:14 -07005#include <linux/module.h>
6#include <linux/ctype.h>
7#include <linux/debugfs.h>
8#include <linux/seq_file.h>
9
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -070010#include <linux/ceph/libceph.h>
11#include <linux/ceph/mon_client.h>
12#include <linux/ceph/auth.h>
13#include <linux/ceph/debugfs.h>
Sage Weil76aa8442009-10-06 11:31:14 -070014
Randy Dunlap6f453ed2010-09-28 09:53:10 -070015#include "super.h"
16
Sage Weil039934b2009-11-12 15:05:52 -080017#ifdef CONFIG_DEBUG_FS
18
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -070019#include "mds_client.h"
Sage Weil76aa8442009-10-06 11:31:14 -070020
21static int mdsmap_show(struct seq_file *s, void *p)
22{
23 int i;
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -070024 struct ceph_fs_client *fsc = s->private;
Sage Weil76aa8442009-10-06 11:31:14 -070025
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -070026 if (fsc->mdsc == NULL || fsc->mdsc->mdsmap == NULL)
Sage Weil76aa8442009-10-06 11:31:14 -070027 return 0;
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -070028 seq_printf(s, "epoch %d\n", fsc->mdsc->mdsmap->m_epoch);
29 seq_printf(s, "root %d\n", fsc->mdsc->mdsmap->m_root);
Sage Weil76aa8442009-10-06 11:31:14 -070030 seq_printf(s, "session_timeout %d\n",
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -070031 fsc->mdsc->mdsmap->m_session_timeout);
Sage Weil76aa8442009-10-06 11:31:14 -070032 seq_printf(s, "session_autoclose %d\n",
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -070033 fsc->mdsc->mdsmap->m_session_autoclose);
34 for (i = 0; i < fsc->mdsc->mdsmap->m_max_mds; i++) {
Sage Weil76aa8442009-10-06 11:31:14 -070035 struct ceph_entity_addr *addr =
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -070036 &fsc->mdsc->mdsmap->m_info[i].addr;
37 int state = fsc->mdsc->mdsmap->m_info[i].state;
Sage Weil76aa8442009-10-06 11:31:14 -070038
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -070039 seq_printf(s, "\tmds%d\t%s\t(%s)\n", i,
40 ceph_pr_addr(&addr->in_addr),
Sage Weil76aa8442009-10-06 11:31:14 -070041 ceph_mds_state_name(state));
42 }
43 return 0;
44}
45
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -070046/*
47 * mdsc debugfs
48 */
Sage Weil76aa8442009-10-06 11:31:14 -070049static int mdsc_show(struct seq_file *s, void *p)
50{
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -070051 struct ceph_fs_client *fsc = s->private;
52 struct ceph_mds_client *mdsc = fsc->mdsc;
Sage Weil44ca18f2010-02-15 12:08:46 -080053 struct ceph_mds_request *req;
54 struct rb_node *rp;
Sage Weil76aa8442009-10-06 11:31:14 -070055 int pathlen;
56 u64 pathbase;
57 char *path;
58
59 mutex_lock(&mdsc->mutex);
Sage Weil44ca18f2010-02-15 12:08:46 -080060 for (rp = rb_first(&mdsc->request_tree); rp; rp = rb_next(rp)) {
61 req = rb_entry(rp, struct ceph_mds_request, r_node);
Sage Weil76aa8442009-10-06 11:31:14 -070062
Sage Weil4af25fd2010-11-02 13:41:47 -070063 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)
Sage Weil76aa8442009-10-06 11:31:14 -070067 seq_printf(s, "%lld\t(no request)\t", req->r_tid);
Sage Weil4af25fd2010-11-02 13:41:47 -070068 else
69 seq_printf(s, "%lld\t(no session)\t", req->r_tid);
Sage Weil76aa8442009-10-06 11:31:14 -070070
71 seq_printf(s, "%s", ceph_mds_op_name(req->r_op));
72
73 if (req->r_got_unsafe)
Fabian Frederick3364d112014-06-06 14:35:38 -070074 seq_puts(s, "\t(unsafe)");
Sage Weil76aa8442009-10-06 11:31:14 -070075 else
Fabian Frederick3364d112014-06-06 14:35:38 -070076 seq_puts(s, "\t");
Sage Weil76aa8442009-10-06 11:31:14 -070077
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);
Dan Carpenterf44c3892010-08-26 11:07:24 +020083 if (IS_ERR(path))
84 path = NULL;
Sage Weil76aa8442009-10-06 11:31:14 -070085 spin_lock(&req->r_dentry->d_lock);
Al Viroa4555892014-10-21 20:11:25 -040086 seq_printf(s, " #%llx/%pd (%s)",
David Howells2b0143b2015-03-17 22:25:59 +000087 ceph_ino(d_inode(req->r_dentry->d_parent)),
Al Viroa4555892014-10-21 20:11:25 -040088 req->r_dentry,
Sage Weil76aa8442009-10-06 11:31:14 -070089 path ? path : "");
90 spin_unlock(&req->r_dentry->d_lock);
91 kfree(path);
92 } else if (req->r_path1) {
93 seq_printf(s, " #%llx/%s", req->r_ino1.ino,
94 req->r_path1);
Yan, Zhengc137a322014-03-01 22:22:57 +080095 } else {
96 seq_printf(s, " #%llx", req->r_ino1.ino);
Sage Weil76aa8442009-10-06 11:31:14 -070097 }
98
99 if (req->r_old_dentry) {
100 path = ceph_mdsc_build_path(req->r_old_dentry, &pathlen,
101 &pathbase, 0);
Dan Carpenterf44c3892010-08-26 11:07:24 +0200102 if (IS_ERR(path))
103 path = NULL;
Sage Weil76aa8442009-10-06 11:31:14 -0700104 spin_lock(&req->r_old_dentry->d_lock);
Al Viroa4555892014-10-21 20:11:25 -0400105 seq_printf(s, " #%llx/%pd (%s)",
Sage Weil844d87c2013-02-05 13:40:09 -0800106 req->r_old_dentry_dir ?
107 ceph_ino(req->r_old_dentry_dir) : 0,
Al Viroa4555892014-10-21 20:11:25 -0400108 req->r_old_dentry,
Sage Weil76aa8442009-10-06 11:31:14 -0700109 path ? path : "");
110 spin_unlock(&req->r_old_dentry->d_lock);
111 kfree(path);
112 } else if (req->r_path2) {
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
Fabian Frederick3364d112014-06-06 14:35:38 -0700120 seq_puts(s, "\n");
Sage Weil76aa8442009-10-06 11:31:14 -0700121 }
122 mutex_unlock(&mdsc->mutex);
123
124 return 0;
125}
126
Sage Weil76aa8442009-10-06 11:31:14 -0700127static int caps_show(struct seq_file *s, void *p)
128{
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700129 struct ceph_fs_client *fsc = s->private;
Sage Weil85ccce42010-02-17 10:02:43 -0800130 int total, avail, used, reserved, min;
Sage Weil76aa8442009-10-06 11:31:14 -0700131
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700132 ceph_reservation_status(fsc, &total, &avail, &used, &reserved, &min);
Sage Weil76aa8442009-10-06 11:31:14 -0700133 seq_printf(s, "total\t\t%d\n"
Sage Weil85ccce42010-02-17 10:02:43 -0800134 "avail\t\t%d\n"
135 "used\t\t%d\n"
136 "reserved\t%d\n"
137 "min\t%d\n",
138 total, avail, used, reserved, min);
Sage Weil76aa8442009-10-06 11:31:14 -0700139 return 0;
140}
141
142static int dentry_lru_show(struct seq_file *s, void *ptr)
143{
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700144 struct ceph_fs_client *fsc = s->private;
145 struct ceph_mds_client *mdsc = fsc->mdsc;
Sage Weil76aa8442009-10-06 11:31:14 -0700146 struct ceph_dentry_info *di;
147
148 spin_lock(&mdsc->dentry_lru_lock);
149 list_for_each_entry(di, &mdsc->dentry_lru, lru) {
150 struct dentry *dentry = di->dentry;
Al Viroa4555892014-10-21 20:11:25 -0400151 seq_printf(s, "%p %p\t%pd\n",
152 di, dentry, dentry);
Sage Weil76aa8442009-10-06 11:31:14 -0700153 }
154 spin_unlock(&mdsc->dentry_lru_lock);
155
156 return 0;
157}
158
John Spray14ed9702014-09-12 16:58:49 +0100159static int mds_sessions_show(struct seq_file *s, void *ptr)
160{
161 struct ceph_fs_client *fsc = s->private;
162 struct ceph_mds_client *mdsc = fsc->mdsc;
163 struct ceph_auth_client *ac = fsc->client->monc.auth;
164 struct ceph_options *opt = fsc->client->options;
165 int mds = -1;
166
167 mutex_lock(&mdsc->mutex);
168
169 /* The 'num' portion of an 'entity name' */
170 seq_printf(s, "global_id %llu\n", ac->global_id);
171
172 /* The -o name mount argument */
173 seq_printf(s, "name \"%s\"\n", opt->name ? opt->name : "");
174
175 /* The list of MDS session rank+state */
176 for (mds = 0; mds < mdsc->max_sessions; mds++) {
177 struct ceph_mds_session *session =
178 __ceph_lookup_mds_session(mdsc, mds);
179 if (!session) {
180 continue;
181 }
182 mutex_unlock(&mdsc->mutex);
183 seq_printf(s, "mds.%d %s\n",
184 session->s_mds,
185 ceph_session_state_name(session->s_state));
186
187 ceph_put_mds_session(session);
188 mutex_lock(&mdsc->mutex);
189 }
190 mutex_unlock(&mdsc->mutex);
191
192 return 0;
193}
194
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700195CEPH_DEFINE_SHOW_FUNC(mdsmap_show)
196CEPH_DEFINE_SHOW_FUNC(mdsc_show)
197CEPH_DEFINE_SHOW_FUNC(caps_show)
198CEPH_DEFINE_SHOW_FUNC(dentry_lru_show)
John Spray14ed9702014-09-12 16:58:49 +0100199CEPH_DEFINE_SHOW_FUNC(mds_sessions_show)
Sage Weil76aa8442009-10-06 11:31:14 -0700200
Sage Weil76aa8442009-10-06 11:31:14 -0700201
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700202/*
203 * debugfs
204 */
Yehuda Sadeh2baba252009-12-18 13:51:57 -0800205static int congestion_kb_set(void *data, u64 val)
206{
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700207 struct ceph_fs_client *fsc = (struct ceph_fs_client *)data;
Yehuda Sadeh2baba252009-12-18 13:51:57 -0800208
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700209 fsc->mount_options->congestion_kb = (int)val;
Yehuda Sadeh2baba252009-12-18 13:51:57 -0800210 return 0;
211}
212
213static int congestion_kb_get(void *data, u64 *val)
214{
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700215 struct ceph_fs_client *fsc = (struct ceph_fs_client *)data;
Yehuda Sadeh2baba252009-12-18 13:51:57 -0800216
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700217 *val = (u64)fsc->mount_options->congestion_kb;
Yehuda Sadeh2baba252009-12-18 13:51:57 -0800218 return 0;
219}
220
Yehuda Sadeh2baba252009-12-18 13:51:57 -0800221DEFINE_SIMPLE_ATTRIBUTE(congestion_kb_fops, congestion_kb_get,
222 congestion_kb_set, "%llu\n");
223
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700224
225void ceph_fs_debugfs_cleanup(struct ceph_fs_client *fsc)
Sage Weil76aa8442009-10-06 11:31:14 -0700226{
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700227 dout("ceph_fs_debugfs_cleanup\n");
228 debugfs_remove(fsc->debugfs_bdi);
229 debugfs_remove(fsc->debugfs_congestion_kb);
230 debugfs_remove(fsc->debugfs_mdsmap);
John Spray14ed9702014-09-12 16:58:49 +0100231 debugfs_remove(fsc->debugfs_mds_sessions);
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700232 debugfs_remove(fsc->debugfs_caps);
233 debugfs_remove(fsc->debugfs_mdsc);
234 debugfs_remove(fsc->debugfs_dentry_lru);
Sage Weil76aa8442009-10-06 11:31:14 -0700235}
236
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700237int ceph_fs_debugfs_init(struct ceph_fs_client *fsc)
Sage Weil76aa8442009-10-06 11:31:14 -0700238{
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700239 char name[100];
240 int err = -ENOMEM;
Sage Weil76aa8442009-10-06 11:31:14 -0700241
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700242 dout("ceph_fs_debugfs_init\n");
Sage Weild1c338a2012-08-19 12:29:16 -0700243 BUG_ON(!fsc->client->debugfs_dir);
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700244 fsc->debugfs_congestion_kb =
Sage Weil213c99e2010-08-03 10:25:11 -0700245 debugfs_create_file("writeback_congestion_kb",
246 0600,
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700247 fsc->client->debugfs_dir,
248 fsc,
Sage Weil213c99e2010-08-03 10:25:11 -0700249 &congestion_kb_fops);
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700250 if (!fsc->debugfs_congestion_kb)
Yehuda Sadeh2baba252009-12-18 13:51:57 -0800251 goto out;
252
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700253 snprintf(name, sizeof(name), "../../bdi/%s",
254 dev_name(fsc->backing_dev_info.dev));
255 fsc->debugfs_bdi =
256 debugfs_create_symlink("bdi",
257 fsc->client->debugfs_dir,
258 name);
259 if (!fsc->debugfs_bdi)
260 goto out;
261
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700262 fsc->debugfs_mdsmap = debugfs_create_file("mdsmap",
263 0600,
264 fsc->client->debugfs_dir,
265 fsc,
266 &mdsmap_show_fops);
267 if (!fsc->debugfs_mdsmap)
268 goto out;
269
John Spray14ed9702014-09-12 16:58:49 +0100270 fsc->debugfs_mds_sessions = debugfs_create_file("mds_sessions",
271 0600,
272 fsc->client->debugfs_dir,
273 fsc,
274 &mds_sessions_show_fops);
275 if (!fsc->debugfs_mds_sessions)
276 goto out;
277
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700278 fsc->debugfs_mdsc = debugfs_create_file("mdsc",
279 0600,
280 fsc->client->debugfs_dir,
281 fsc,
282 &mdsc_show_fops);
283 if (!fsc->debugfs_mdsc)
284 goto out;
285
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700286 fsc->debugfs_caps = debugfs_create_file("caps",
287 0400,
288 fsc->client->debugfs_dir,
289 fsc,
290 &caps_show_fops);
291 if (!fsc->debugfs_caps)
292 goto out;
293
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700294 fsc->debugfs_dentry_lru = debugfs_create_file("dentry_lru",
295 0600,
296 fsc->client->debugfs_dir,
297 fsc,
298 &dentry_lru_show_fops);
299 if (!fsc->debugfs_dentry_lru)
300 goto out;
Sage Weil06edf042009-12-15 14:44:32 -0800301
Sage Weil76aa8442009-10-06 11:31:14 -0700302 return 0;
303
304out:
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700305 ceph_fs_debugfs_cleanup(fsc);
306 return err;
Sage Weil76aa8442009-10-06 11:31:14 -0700307}
308
Sage Weil76aa8442009-10-06 11:31:14 -0700309
Sage Weil213c99e2010-08-03 10:25:11 -0700310#else /* CONFIG_DEBUG_FS */
Sage Weil039934b2009-11-12 15:05:52 -0800311
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700312int ceph_fs_debugfs_init(struct ceph_fs_client *fsc)
Sage Weil039934b2009-11-12 15:05:52 -0800313{
314 return 0;
315}
316
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700317void ceph_fs_debugfs_cleanup(struct ceph_fs_client *fsc)
Sage Weil039934b2009-11-12 15:05:52 -0800318{
319}
320
Sage Weil213c99e2010-08-03 10:25:11 -0700321#endif /* CONFIG_DEBUG_FS */