projects/linux·blob v3.13 · refs

260 lines · 6.3 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#ifdef CONFIG_DEBUG_FS
16
17/*
18 * Implement /sys/kernel/debug/ceph fun
19 *
20 * /sys/kernel/debug/ceph/client* - an instance of the ceph client
21 * .../osdmap - current osdmap
22 * .../monmap - current monmap
23 * .../osdc - active osd requests
24 * .../monc - mon client state
25 * .../dentry_lru - dump contents of dentry lru
26 * .../caps - expose cap (reservation) stats
27 * .../bdi - symlink to ../../bdi/something
28 */
29
30static struct dentry *ceph_debugfs_dir;
31
32static int monmap_show(struct seq_file *s, void *p)
33{
34 int i;
35 struct ceph_client *client = s->private;
36
37 if (client->monc.monmap == NULL)
38 return 0;
39
40 seq_printf(s, "epoch %d\n", client->monc.monmap->epoch);
41 for (i = 0; i < client->monc.monmap->num_mon; i++) {
42 struct ceph_entity_inst *inst =
43 &client->monc.monmap->mon_inst[i];
44
45 seq_printf(s, "\t%s%lld\t%s\n",
46 ENTITY_NAME(inst->name),
47 ceph_pr_addr(&inst->addr.in_addr));
48 }
49 return 0;
50}
51
52static int osdmap_show(struct seq_file *s, void *p)
53{
54 int i;
55 struct ceph_client *client = s->private;
56 struct rb_node *n;
57
58 if (client->osdc.osdmap == NULL)
59 return 0;
60 seq_printf(s, "epoch %d\n", client->osdc.osdmap->epoch);
61 seq_printf(s, "flags%s%s\n",
62 (client->osdc.osdmap->flags & CEPH_OSDMAP_NEARFULL) ?
63 " NEARFULL" : "",
64 (client->osdc.osdmap->flags & CEPH_OSDMAP_FULL) ?
65 " FULL" : "");
66 for (n = rb_first(&client->osdc.osdmap->pg_pools); n; n = rb_next(n)) {
67 struct ceph_pg_pool_info *pool =
68 rb_entry(n, struct ceph_pg_pool_info, node);
69 seq_printf(s, "pg_pool %llu pg_num %d / %d\n",
70 (unsigned long long)pool->id, pool->pg_num,
71 pool->pg_num_mask);
72 }
73 for (i = 0; i < client->osdc.osdmap->max_osd; i++) {
74 struct ceph_entity_addr *addr =
75 &client->osdc.osdmap->osd_addr[i];
76 int state = client->osdc.osdmap->osd_state[i];
77 char sb[64];
78
79 seq_printf(s, "\tosd%d\t%s\t%3d%%\t(%s)\n",
80 i, ceph_pr_addr(&addr->in_addr),
81 ((client->osdc.osdmap->osd_weight[i]*100) >> 16),
82 ceph_osdmap_state_str(sb, sizeof(sb), state));
83 }
84 return 0;
85}
86
87static int monc_show(struct seq_file *s, void *p)
88{
89 struct ceph_client *client = s->private;
90 struct ceph_mon_generic_request *req;
91 struct ceph_mon_client *monc = &client->monc;
92 struct rb_node *rp;
93
94 mutex_lock(&monc->mutex);
95
96 if (monc->have_mdsmap)
97 seq_printf(s, "have mdsmap %u\n", (unsigned int)monc->have_mdsmap);
98 if (monc->have_osdmap)
99 seq_printf(s, "have osdmap %u\n", (unsigned int)monc->have_osdmap);
100 if (monc->want_next_osdmap)
101 seq_printf(s, "want next osdmap\n");
102
103 for (rp = rb_first(&monc->generic_request_tree); rp; rp = rb_next(rp)) {
104 __u16 op;
105 req = rb_entry(rp, struct ceph_mon_generic_request, node);
106 op = le16_to_cpu(req->request->hdr.type);
107 if (op == CEPH_MSG_STATFS)
108 seq_printf(s, "%lld statfs\n", req->tid);
109 else
110 seq_printf(s, "%lld unknown\n", req->tid);
111 }
112
113 mutex_unlock(&monc->mutex);
114 return 0;
115}
116
117static int osdc_show(struct seq_file *s, void *pp)
118{
119 struct ceph_client *client = s->private;
120 struct ceph_osd_client *osdc = &client->osdc;
121 struct rb_node *p;
122
123 mutex_lock(&osdc->request_mutex);
124 for (p = rb_first(&osdc->requests); p; p = rb_next(p)) {
125 struct ceph_osd_request *req;
126 unsigned int i;
127 int opcode;
128
129 req = rb_entry(p, struct ceph_osd_request, r_node);
130
131 seq_printf(s, "%lld\tosd%d\t%lld.%x\t", req->r_tid,
132 req->r_osd ? req->r_osd->o_osd : -1,
133 req->r_pgid.pool, req->r_pgid.seed);
134
135 seq_printf(s, "%.*s", req->r_oid_len, req->r_oid);
136
137 if (req->r_reassert_version.epoch)
138 seq_printf(s, "\t%u'%llu",
139 (unsigned int)le32_to_cpu(req->r_reassert_version.epoch),
140 le64_to_cpu(req->r_reassert_version.version));
141 else
142 seq_printf(s, "\t");
143
144 for (i = 0; i < req->r_num_ops; i++) {
145 opcode = req->r_ops[i].op;
146 seq_printf(s, "\t%s", ceph_osd_op_name(opcode));
147 }
148
149 seq_printf(s, "\n");
150 }
151 mutex_unlock(&osdc->request_mutex);
152 return 0;
153}
154
155CEPH_DEFINE_SHOW_FUNC(monmap_show)
156CEPH_DEFINE_SHOW_FUNC(osdmap_show)
157CEPH_DEFINE_SHOW_FUNC(monc_show)
158CEPH_DEFINE_SHOW_FUNC(osdc_show)
159
160int ceph_debugfs_init(void)
161{
162 ceph_debugfs_dir = debugfs_create_dir("ceph", NULL);
163 if (!ceph_debugfs_dir)
164 return -ENOMEM;
165 return 0;
166}
167
168void ceph_debugfs_cleanup(void)
169{
170 debugfs_remove(ceph_debugfs_dir);
171}
172
173int ceph_debugfs_client_init(struct ceph_client *client)
174{
175 int ret = -ENOMEM;
176 char name[80];
177
178 snprintf(name, sizeof(name), "%pU.client%lld", &client->fsid,
179 client->monc.auth->global_id);
180
181 dout("ceph_debugfs_client_init %p %s\n", client, name);
182
183 BUG_ON(client->debugfs_dir);
184 client->debugfs_dir = debugfs_create_dir(name, ceph_debugfs_dir);
185 if (!client->debugfs_dir)
186 goto out;
187
188 client->monc.debugfs_file = debugfs_create_file("monc",
189 0600,
190 client->debugfs_dir,
191 client,
192 &monc_show_fops);
193 if (!client->monc.debugfs_file)
194 goto out;
195
196 client->osdc.debugfs_file = debugfs_create_file("osdc",
197 0600,
198 client->debugfs_dir,
199 client,
200 &osdc_show_fops);
201 if (!client->osdc.debugfs_file)
202 goto out;
203
204 client->debugfs_monmap = debugfs_create_file("monmap",
205 0600,
206 client->debugfs_dir,
207 client,
208 &monmap_show_fops);
209 if (!client->debugfs_monmap)
210 goto out;
211
212 client->debugfs_osdmap = debugfs_create_file("osdmap",
213 0600,
214 client->debugfs_dir,
215 client,
216 &osdmap_show_fops);
217 if (!client->debugfs_osdmap)
218 goto out;
219
220 return 0;
221
222out:
223 ceph_debugfs_client_cleanup(client);
224 return ret;
225}
226
227void ceph_debugfs_client_cleanup(struct ceph_client *client)
228{
229 dout("ceph_debugfs_client_cleanup %p\n", client);
230 debugfs_remove(client->debugfs_osdmap);
231 debugfs_remove(client->debugfs_monmap);
232 debugfs_remove(client->osdc.debugfs_file);
233 debugfs_remove(client->monc.debugfs_file);
234 debugfs_remove(client->debugfs_dir);
235}
236
237#else /* CONFIG_DEBUG_FS */
238
239int ceph_debugfs_init(void)
240{
241 return 0;
242}
243
244void ceph_debugfs_cleanup(void)
245{
246}
247
248int ceph_debugfs_client_init(struct ceph_client *client)
249{
250 return 0;
251}
252
253void ceph_debugfs_client_cleanup(struct ceph_client *client)
254{
255}
256
257#endif /* CONFIG_DEBUG_FS */
258
259EXPORT_SYMBOL(ceph_debugfs_init);
260EXPORT_SYMBOL(ceph_debugfs_cleanup);