projects/linux·blob v3.13 · refs

274 lines · 6.4 KiB

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
26 if (fsc->mdsc == NULL || fsc->mdsc->mdsmap == NULL)
27 return 0;
28 seq_printf(s, "epoch %d\n", fsc->mdsc->mdsmap->m_epoch);
29 seq_printf(s, "root %d\n", fsc->mdsc->mdsmap->m_root);
30 seq_printf(s, "session_timeout %d\n",
31 fsc->mdsc->mdsmap->m_session_timeout);
32 seq_printf(s, "session_autoclose %d\n",
33 fsc->mdsc->mdsmap->m_session_autoclose);
34 for (i = 0; i < fsc->mdsc->mdsmap->m_max_mds; i++) {
35 struct ceph_entity_addr *addr =
36 &fsc->mdsc->mdsmap->m_info[i].addr;
37 int state = fsc->mdsc->mdsmap->m_info[i].state;
38
39 seq_printf(s, "\tmds%d\t%s\t(%s)\n", i,
40 ceph_pr_addr(&addr->in_addr),
41 ceph_mds_state_name(state));
42 }
43 return 0;
44}
45
46/*
47 * mdsc debugfs
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;
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 (req->r_got_unsafe)
74 seq_printf(s, "\t(unsafe)");
75 else
76 seq_printf(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/%.*s (%s)",
87 ceph_ino(req->r_dentry->d_parent->d_inode),
88 req->r_dentry->d_name.len,
89 req->r_dentry->d_name.name,
90 path ? path : "");
91 spin_unlock(&req->r_dentry->d_lock);
92 kfree(path);
93 } else if (req->r_path1) {
94 seq_printf(s, " #%llx/%s", req->r_ino1.ino,
95 req->r_path1);
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/%.*s (%s)",
105 ceph_ino(req->r_old_dentry_dir),
106 req->r_old_dentry->d_name.len,
107 req->r_old_dentry->d_name.name,
108 path ? path : "");
109 spin_unlock(&req->r_old_dentry->d_lock);
110 kfree(path);
111 } else if (req->r_path2) {
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_printf(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%.*s\n",
151 di, dentry, dentry->d_name.len, dentry->d_name.name);
152 }
153 spin_unlock(&mdsc->dentry_lru_lock);
154
155 return 0;
156}
157
158CEPH_DEFINE_SHOW_FUNC(mdsmap_show)
159CEPH_DEFINE_SHOW_FUNC(mdsc_show)
160CEPH_DEFINE_SHOW_FUNC(caps_show)
161CEPH_DEFINE_SHOW_FUNC(dentry_lru_show)
162
163
164/*
165 * debugfs
166 */
167static int congestion_kb_set(void *data, u64 val)
168{
169 struct ceph_fs_client *fsc = (struct ceph_fs_client *)data;
170
171 fsc->mount_options->congestion_kb = (int)val;
172 return 0;
173}
174
175static int congestion_kb_get(void *data, u64 *val)
176{
177 struct ceph_fs_client *fsc = (struct ceph_fs_client *)data;
178
179 *val = (u64)fsc->mount_options->congestion_kb;
180 return 0;
181}
182
183DEFINE_SIMPLE_ATTRIBUTE(congestion_kb_fops, congestion_kb_get,
184 congestion_kb_set, "%llu\n");
185
186
187void ceph_fs_debugfs_cleanup(struct ceph_fs_client *fsc)
188{
189 dout("ceph_fs_debugfs_cleanup\n");
190 debugfs_remove(fsc->debugfs_bdi);
191 debugfs_remove(fsc->debugfs_congestion_kb);
192 debugfs_remove(fsc->debugfs_mdsmap);
193 debugfs_remove(fsc->debugfs_caps);
194 debugfs_remove(fsc->debugfs_mdsc);
195 debugfs_remove(fsc->debugfs_dentry_lru);
196}
197
198int ceph_fs_debugfs_init(struct ceph_fs_client *fsc)
199{
200 char name[100];
201 int err = -ENOMEM;
202
203 dout("ceph_fs_debugfs_init\n");
204 BUG_ON(!fsc->client->debugfs_dir);
205 fsc->debugfs_congestion_kb =
206 debugfs_create_file("writeback_congestion_kb",
207 0600,
208 fsc->client->debugfs_dir,
209 fsc,
210 &congestion_kb_fops);
211 if (!fsc->debugfs_congestion_kb)
212 goto out;
213
214 snprintf(name, sizeof(name), "../../bdi/%s",
215 dev_name(fsc->backing_dev_info.dev));
216 fsc->debugfs_bdi =
217 debugfs_create_symlink("bdi",
218 fsc->client->debugfs_dir,
219 name);
220 if (!fsc->debugfs_bdi)
221 goto out;
222
223 fsc->debugfs_mdsmap = debugfs_create_file("mdsmap",
224 0600,
225 fsc->client->debugfs_dir,
226 fsc,
227 &mdsmap_show_fops);
228 if (!fsc->debugfs_mdsmap)
229 goto out;
230
231 fsc->debugfs_mdsc = debugfs_create_file("mdsc",
232 0600,
233 fsc->client->debugfs_dir,
234 fsc,
235 &mdsc_show_fops);
236 if (!fsc->debugfs_mdsc)
237 goto out;
238
239 fsc->debugfs_caps = debugfs_create_file("caps",
240 0400,
241 fsc->client->debugfs_dir,
242 fsc,
243 &caps_show_fops);
244 if (!fsc->debugfs_caps)
245 goto out;
246
247 fsc->debugfs_dentry_lru = debugfs_create_file("dentry_lru",
248 0600,
249 fsc->client->debugfs_dir,
250 fsc,
251 &dentry_lru_show_fops);
252 if (!fsc->debugfs_dentry_lru)
253 goto out;
254
255 return 0;
256
257out:
258 ceph_fs_debugfs_cleanup(fsc);
259 return err;
260}
261
262
263#else /* CONFIG_DEBUG_FS */
264
265int ceph_fs_debugfs_init(struct ceph_fs_client *fsc)
266{
267 return 0;
268}
269
270void ceph_fs_debugfs_cleanup(struct ceph_fs_client *fsc)
271{
272}
273
274#endif /* CONFIG_DEBUG_FS */