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ceph: fix mds cluster availability check
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CommitLineData
3d14c5d2 1#include <linux/ceph/ceph_debug.h>
76aa844d 2
06edf046 3#include <linux/device.h>
5a0e3ad6 4#include <linux/slab.h>
76aa844d
SW
5#include <linux/module.h>
6#include <linux/ctype.h>
7#include <linux/debugfs.h>
8#include <linux/seq_file.h>
9
3d14c5d2
YS
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>
76aa844d 14
6f453ed6
RD
15#include "super.h"
16
039934b8
SW
17#ifdef CONFIG_DEBUG_FS
18
3d14c5d2 19#include "mds_client.h"
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SW
20
21static int mdsmap_show(struct seq_file *s, void *p)
22{
23 int i;
3d14c5d2 24 struct ceph_fs_client *fsc = s->private;
76aa844d 25
3d14c5d2 26 if (fsc->mdsc == NULL || fsc->mdsc->mdsmap == NULL)
76aa844d 27 return 0;
3d14c5d2
YS
28 seq_printf(s, "epoch %d\n", fsc->mdsc->mdsmap->m_epoch);
29 seq_printf(s, "root %d\n", fsc->mdsc->mdsmap->m_root);
76aa844d 30 seq_printf(s, "session_timeout %d\n",
3d14c5d2 31 fsc->mdsc->mdsmap->m_session_timeout);
76aa844d 32 seq_printf(s, "session_autoclose %d\n",
3d14c5d2
YS
33 fsc->mdsc->mdsmap->m_session_autoclose);
34 for (i = 0; i < fsc->mdsc->mdsmap->m_max_mds; i++) {
76aa844d 35 struct ceph_entity_addr *addr =
3d14c5d2
YS
36 &fsc->mdsc->mdsmap->m_info[i].addr;
37 int state = fsc->mdsc->mdsmap->m_info[i].state;
76aa844d 38
3d14c5d2
YS
39 seq_printf(s, "\tmds%d\t%s\t(%s)\n", i,
40 ceph_pr_addr(&addr->in_addr),
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SW
41 ceph_mds_state_name(state));
42 }
43 return 0;
44}
45
3d14c5d2
YS
46/*
47 * mdsc debugfs
48 */
76aa844d
SW
49static int mdsc_show(struct seq_file *s, void *p)
50{
3d14c5d2
YS
51 struct ceph_fs_client *fsc = s->private;
52 struct ceph_mds_client *mdsc = fsc->mdsc;
44ca18f2
SW
53 struct ceph_mds_request *req;
54 struct rb_node *rp;
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SW
55 int pathlen;
56 u64 pathbase;
57 char *path;
58
59 mutex_lock(&mdsc->mutex);
44ca18f2
SW
60 for (rp = rb_first(&mdsc->request_tree); rp; rp = rb_next(rp)) {
61 req = rb_entry(rp, struct ceph_mds_request, r_node);
76aa844d 62
4af25fdd
SW
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)
76aa844d 67 seq_printf(s, "%lld\t(no request)\t", req->r_tid);
4af25fdd
SW
68 else
69 seq_printf(s, "%lld\t(no session)\t", req->r_tid);
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SW
70
71 seq_printf(s, "%s", ceph_mds_op_name(req->r_op));
72
73 if (req->r_got_unsafe)
3364d113 74 seq_puts(s, "\t(unsafe)");
76aa844d 75 else
3364d113 76 seq_puts(s, "\t");
76aa844d
SW
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);
f44c3890
DC
83 if (IS_ERR(path))
84 path = NULL;
76aa844d 85 spin_lock(&req->r_dentry->d_lock);
a455589f 86 seq_printf(s, " #%llx/%pd (%s)",
2b0143b5 87 ceph_ino(d_inode(req->r_dentry->d_parent)),
a455589f 88 req->r_dentry,
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SW
89 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);
c137a32a
YZ
95 } else {
96 seq_printf(s, " #%llx", req->r_ino1.ino);
76aa844d
SW
97 }
98
99 if (req->r_old_dentry) {
100 path = ceph_mdsc_build_path(req->r_old_dentry, &pathlen,
101 &pathbase, 0);
f44c3890
DC
102 if (IS_ERR(path))
103 path = NULL;
76aa844d 104 spin_lock(&req->r_old_dentry->d_lock);
a455589f 105 seq_printf(s, " #%llx/%pd (%s)",
844d87c3
SW
106 req->r_old_dentry_dir ?
107 ceph_ino(req->r_old_dentry_dir) : 0,
a455589f 108 req->r_old_dentry,
76aa844d
SW
109 path ? path : "");
110 spin_unlock(&req->r_old_dentry->d_lock);
111 kfree(path);
aeda081c 112 } else if (req->r_path2 && req->r_op != CEPH_MDS_OP_SYMLINK) {
76aa844d
SW
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
3364d113 120 seq_puts(s, "\n");
76aa844d
SW
121 }
122 mutex_unlock(&mdsc->mutex);
123
124 return 0;
125}
126
76aa844d
SW
127static int caps_show(struct seq_file *s, void *p)
128{
3d14c5d2 129 struct ceph_fs_client *fsc = s->private;
85ccce43 130 int total, avail, used, reserved, min;
76aa844d 131
3d14c5d2 132 ceph_reservation_status(fsc, &total, &avail, &used, &reserved, &min);
76aa844d 133 seq_printf(s, "total\t\t%d\n"
85ccce43
SW
134 "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);
76aa844d
SW
139 return 0;
140}
141
142static int dentry_lru_show(struct seq_file *s, void *ptr)
143{
3d14c5d2
YS
144 struct ceph_fs_client *fsc = s->private;
145 struct ceph_mds_client *mdsc = fsc->mdsc;
76aa844d
SW
146 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;
a455589f
AV
151 seq_printf(s, "%p %p\t%pd\n",
152 di, dentry, dentry);
76aa844d
SW
153 }
154 spin_unlock(&mdsc->dentry_lru_lock);
155
156 return 0;
157}
158
14ed9703
JS
159static 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
3d14c5d2
YS
195CEPH_DEFINE_SHOW_FUNC(mdsmap_show)
196CEPH_DEFINE_SHOW_FUNC(mdsc_show)
197CEPH_DEFINE_SHOW_FUNC(caps_show)
198CEPH_DEFINE_SHOW_FUNC(dentry_lru_show)
14ed9703 199CEPH_DEFINE_SHOW_FUNC(mds_sessions_show)
3d14c5d2 200
76aa844d 201
3d14c5d2
YS
202/*
203 * debugfs
204 */
2baba250
YS
205static int congestion_kb_set(void *data, u64 val)
206{
3d14c5d2 207 struct ceph_fs_client *fsc = (struct ceph_fs_client *)data;
2baba250 208
3d14c5d2 209 fsc->mount_options->congestion_kb = (int)val;
2baba250
YS
210 return 0;
211}
212
213static int congestion_kb_get(void *data, u64 *val)
214{
3d14c5d2 215 struct ceph_fs_client *fsc = (struct ceph_fs_client *)data;
2baba250 216
3d14c5d2 217 *val = (u64)fsc->mount_options->congestion_kb;
2baba250
YS
218 return 0;
219}
220
2baba250
YS
221DEFINE_SIMPLE_ATTRIBUTE(congestion_kb_fops, congestion_kb_get,
222 congestion_kb_set, "%llu\n");
223
76aa844d 224
3d14c5d2 225void ceph_fs_debugfs_cleanup(struct ceph_fs_client *fsc)
76aa844d 226{
3d14c5d2
YS
227 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);
14ed9703 231 debugfs_remove(fsc->debugfs_mds_sessions);
3d14c5d2
YS
232 debugfs_remove(fsc->debugfs_caps);
233 debugfs_remove(fsc->debugfs_mdsc);
234 debugfs_remove(fsc->debugfs_dentry_lru);
76aa844d
SW
235}
236
3d14c5d2 237int ceph_fs_debugfs_init(struct ceph_fs_client *fsc)
76aa844d 238{
3d14c5d2
YS
239 char name[100];
240 int err = -ENOMEM;
76aa844d 241
3d14c5d2 242 dout("ceph_fs_debugfs_init\n");
d1c338a5 243 BUG_ON(!fsc->client->debugfs_dir);
3d14c5d2
YS
244 fsc->debugfs_congestion_kb =
245 debugfs_create_file("writeback_congestion_kb",
246 0600,
247 fsc->client->debugfs_dir,
248 fsc,
249 &congestion_kb_fops);
250 if (!fsc->debugfs_congestion_kb)
76aa844d
SW
251 goto out;
252
3d14c5d2
YS
253 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)
76aa844d
SW
260 goto out;
261
3d14c5d2 262 fsc->debugfs_mdsmap = debugfs_create_file("mdsmap",
76aa844d 263 0600,
3d14c5d2
YS
264 fsc->client->debugfs_dir,
265 fsc,
76aa844d 266 &mdsmap_show_fops);
3d14c5d2 267 if (!fsc->debugfs_mdsmap)
76aa844d
SW
268 goto out;
269
14ed9703
JS
270 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
3d14c5d2
YS
278 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)
76aa844d
SW
284 goto out;
285
3d14c5d2 286 fsc->debugfs_caps = debugfs_create_file("caps",
76aa844d 287 0400,
3d14c5d2
YS
288 fsc->client->debugfs_dir,
289 fsc,
76aa844d 290 &caps_show_fops);
3d14c5d2 291 if (!fsc->debugfs_caps)
76aa844d
SW
292 goto out;
293
3d14c5d2
YS
294 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)
2baba250
YS
300 goto out;
301
76aa844d
SW
302 return 0;
303
304out:
3d14c5d2
YS
305 ceph_fs_debugfs_cleanup(fsc);
306 return err;
76aa844d
SW
307}
308
76aa844d 309
213c99ee 310#else /* CONFIG_DEBUG_FS */
039934b8 311
3d14c5d2 312int ceph_fs_debugfs_init(struct ceph_fs_client *fsc)
039934b8
SW
313{
314 return 0;
315}
316
3d14c5d2 317void ceph_fs_debugfs_cleanup(struct ceph_fs_client *fsc)
039934b8
SW
318{
319}
320
213c99ee 321#endif /* CONFIG_DEBUG_FS */