[linux.git] / net / ceph / debugfs.c

#include <linux/ceph/ceph_debug.h>

#include <linux/device.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/ctype.h>
#include <linux/debugfs.h>
#include <linux/seq_file.h>

#include <linux/ceph/libceph.h>
#include <linux/ceph/mon_client.h>
#include <linux/ceph/auth.h>
#include <linux/ceph/debugfs.h>

#ifdef CONFIG_DEBUG_FS

/*
 * Implement /sys/kernel/debug/ceph fun
 *
 * /sys/kernel/debug/ceph/client*  - an instance of the ceph client
 *      .../osdmap      - current osdmap
 *      .../monmap      - current monmap
 *      .../osdc        - active osd requests
 *      .../monc        - mon client state
 *      .../dentry_lru  - dump contents of dentry lru
 *      .../caps        - expose cap (reservation) stats
 *      .../bdi         - symlink to ../../bdi/something
 */

static struct dentry *ceph_debugfs_dir;

static int monmap_show(struct seq_file *s, void *p)
{
	int i;
	struct ceph_client *client = s->private;

	if (client->monc.monmap == NULL)
		return 0;

	seq_printf(s, "epoch %d\n", client->monc.monmap->epoch);
	for (i = 0; i < client->monc.monmap->num_mon; i++) {
		struct ceph_entity_inst *inst =
			&client->monc.monmap->mon_inst[i];

		seq_printf(s, "\t%s%lld\t%s\n",
			   ENTITY_NAME(inst->name),
			   ceph_pr_addr(&inst->addr.in_addr));
	}
	return 0;
}

static int osdmap_show(struct seq_file *s, void *p)
{
	int i;
	struct ceph_client *client = s->private;
	struct rb_node *n;

	if (client->osdc.osdmap == NULL)
		return 0;
	seq_printf(s, "epoch %d\n", client->osdc.osdmap->epoch);
	seq_printf(s, "flags%s%s\n",
		   (client->osdc.osdmap->flags & CEPH_OSDMAP_NEARFULL) ?
		   " NEARFULL" : "",
		   (client->osdc.osdmap->flags & CEPH_OSDMAP_FULL) ?
		   " FULL" : "");
	for (n = rb_first(&client->osdc.osdmap->pg_pools); n; n = rb_next(n)) {
		struct ceph_pg_pool_info *pool =
			rb_entry(n, struct ceph_pg_pool_info, node);
		seq_printf(s, "pg_pool %d pg_num %d / %d, lpg_num %d / %d\n",
			   pool->id, pool->v.pg_num, pool->pg_num_mask,
			   pool->v.lpg_num, pool->lpg_num_mask);
	}
	for (i = 0; i < client->osdc.osdmap->max_osd; i++) {
		struct ceph_entity_addr *addr =
			&client->osdc.osdmap->osd_addr[i];
		int state = client->osdc.osdmap->osd_state[i];
		char sb[64];

		seq_printf(s, "\tosd%d\t%s\t%3d%%\t(%s)\n",
			   i, ceph_pr_addr(&addr->in_addr),
			   ((client->osdc.osdmap->osd_weight[i]*100) >> 16),
			   ceph_osdmap_state_str(sb, sizeof(sb), state));
	}
	return 0;
}

static int monc_show(struct seq_file *s, void *p)
{
	struct ceph_client *client = s->private;
	struct ceph_mon_generic_request *req;
	struct ceph_mon_client *monc = &client->monc;
	struct rb_node *rp;

	mutex_lock(&monc->mutex);

	if (monc->have_mdsmap)
		seq_printf(s, "have mdsmap %u\n", (unsigned)monc->have_mdsmap);
	if (monc->have_osdmap)
		seq_printf(s, "have osdmap %u\n", (unsigned)monc->have_osdmap);
	if (monc->want_next_osdmap)
		seq_printf(s, "want next osdmap\n");

	for (rp = rb_first(&monc->generic_request_tree); rp; rp = rb_next(rp)) {
		__u16 op;
		req = rb_entry(rp, struct ceph_mon_generic_request, node);
		op = le16_to_cpu(req->request->hdr.type);
		if (op == CEPH_MSG_STATFS)
			seq_printf(s, "%lld statfs\n", req->tid);
		else
			seq_printf(s, "%lld unknown\n", req->tid);
	}

	mutex_unlock(&monc->mutex);
	return 0;
}

static int osdc_show(struct seq_file *s, void *pp)
{
	struct ceph_client *client = s->private;
	struct ceph_osd_client *osdc = &client->osdc;
	struct rb_node *p;

	mutex_lock(&osdc->request_mutex);
	for (p = rb_first(&osdc->requests); p; p = rb_next(p)) {
		struct ceph_osd_request *req;
		struct ceph_osd_request_head *head;
		struct ceph_osd_op *op;
		int num_ops;
		int opcode, olen;
		int i;

		req = rb_entry(p, struct ceph_osd_request, r_node);

		seq_printf(s, "%lld\tosd%d\t%d.%x\t", req->r_tid,
			   req->r_osd ? req->r_osd->o_osd : -1,
			   le32_to_cpu(req->r_pgid.pool),
			   le16_to_cpu(req->r_pgid.ps));

		head = req->r_request->front.iov_base;
		op = (void *)(head + 1);

		num_ops = le16_to_cpu(head->num_ops);
		olen = le32_to_cpu(head->object_len);
		seq_printf(s, "%.*s", olen,
			   (const char *)(head->ops + num_ops));

		if (req->r_reassert_version.epoch)
			seq_printf(s, "\t%u'%llu",
			   (unsigned)le32_to_cpu(req->r_reassert_version.epoch),
			   le64_to_cpu(req->r_reassert_version.version));
		else
			seq_printf(s, "\t");

		for (i = 0; i < num_ops; i++) {
			opcode = le16_to_cpu(op->op);
			seq_printf(s, "\t%s", ceph_osd_op_name(opcode));
			op++;
		}

		seq_printf(s, "\n");
	}
	mutex_unlock(&osdc->request_mutex);
	return 0;
}

CEPH_DEFINE_SHOW_FUNC(monmap_show)
CEPH_DEFINE_SHOW_FUNC(osdmap_show)
CEPH_DEFINE_SHOW_FUNC(monc_show)
CEPH_DEFINE_SHOW_FUNC(osdc_show)

int ceph_debugfs_init(void)
{
	ceph_debugfs_dir = debugfs_create_dir("ceph", NULL);
	if (!ceph_debugfs_dir)
		return -ENOMEM;
	return 0;
}

void ceph_debugfs_cleanup(void)
{
	debugfs_remove(ceph_debugfs_dir);
}

int ceph_debugfs_client_init(struct ceph_client *client)
{
	int ret = -ENOMEM;
	char name[80];

	snprintf(name, sizeof(name), "%pU.client%lld", &client->fsid,
		 client->monc.auth->global_id);

	client->debugfs_dir = debugfs_create_dir(name, ceph_debugfs_dir);
	if (!client->debugfs_dir)
		goto out;

	client->monc.debugfs_file = debugfs_create_file("monc",
						      0600,
						      client->debugfs_dir,
						      client,
						      &monc_show_fops);
	if (!client->monc.debugfs_file)
		goto out;

	client->osdc.debugfs_file = debugfs_create_file("osdc",
						      0600,
						      client->debugfs_dir,
						      client,
						      &osdc_show_fops);
	if (!client->osdc.debugfs_file)
		goto out;

	client->debugfs_monmap = debugfs_create_file("monmap",
					0600,
					client->debugfs_dir,
					client,
					&monmap_show_fops);
	if (!client->debugfs_monmap)
		goto out;

	client->debugfs_osdmap = debugfs_create_file("osdmap",
					0600,
					client->debugfs_dir,
					client,
					&osdmap_show_fops);
	if (!client->debugfs_osdmap)
		goto out;

	return 0;

out:
	ceph_debugfs_client_cleanup(client);
	return ret;
}

void ceph_debugfs_client_cleanup(struct ceph_client *client)
{
	debugfs_remove(client->debugfs_osdmap);
	debugfs_remove(client->debugfs_monmap);
	debugfs_remove(client->osdc.debugfs_file);
	debugfs_remove(client->monc.debugfs_file);
	debugfs_remove(client->debugfs_dir);
}

#else  /* CONFIG_DEBUG_FS */

int ceph_debugfs_init(void)
{
	return 0;
}

void ceph_debugfs_cleanup(void)
{
}

int ceph_debugfs_client_init(struct ceph_client *client)
{
	return 0;
}

void ceph_debugfs_client_cleanup(struct ceph_client *client)
{
}

#endif  /* CONFIG_DEBUG_FS */

EXPORT_SYMBOL(ceph_debugfs_init);
EXPORT_SYMBOL(ceph_debugfs_cleanup);
Commit	Line	Data
3d14c5d2 YS	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
	30	static struct dentry *ceph_debugfs_dir;
	31
	32	static 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
	52	static 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 %d pg_num %d / %d, lpg_num %d / %d\n",
70	pool->id, pool->v.pg_num, pool->pg_num_mask,
71	pool->v.lpg_num, pool->lpg_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
87	static 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)monc->have_mdsmap);
98	if (monc->have_osdmap)
99	seq_printf(s, "have osdmap %u\n", (unsigned)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
117	static 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	struct ceph_osd_request_head *head;
127	struct ceph_osd_op *op;
128	int num_ops;
129	int opcode, olen;
130	int i;
131
132	req = rb_entry(p, struct ceph_osd_request, r_node);
133
134	seq_printf(s, "%lld\tosd%d\t%d.%x\t", req->r_tid,
135	req->r_osd ? req->r_osd->o_osd : -1,
136	le32_to_cpu(req->r_pgid.pool),
137	le16_to_cpu(req->r_pgid.ps));
138
139	head = req->r_request->front.iov_base;
140	op = (void *)(head + 1);
141
142	num_ops = le16_to_cpu(head->num_ops);
143	olen = le32_to_cpu(head->object_len);
144	seq_printf(s, "%.*s", olen,
145	(const char *)(head->ops + num_ops));
146
147	if (req->r_reassert_version.epoch)
148	seq_printf(s, "\t%u'%llu",
149	(unsigned)le32_to_cpu(req->r_reassert_version.epoch),
150	le64_to_cpu(req->r_reassert_version.version));
151	else
152	seq_printf(s, "\t");
153
154	for (i = 0; i < num_ops; i++) {
155	opcode = le16_to_cpu(op->op);
156	seq_printf(s, "\t%s", ceph_osd_op_name(opcode));
157	op++;
158	}
159
160	seq_printf(s, "\n");
161	}
162	mutex_unlock(&osdc->request_mutex);
163	return 0;
164	}
165
166	CEPH_DEFINE_SHOW_FUNC(monmap_show)
167	CEPH_DEFINE_SHOW_FUNC(osdmap_show)
168	CEPH_DEFINE_SHOW_FUNC(monc_show)
169	CEPH_DEFINE_SHOW_FUNC(osdc_show)
170
171	int ceph_debugfs_init(void)
172	{
173	ceph_debugfs_dir = debugfs_create_dir("ceph", NULL);
174	if (!ceph_debugfs_dir)
175	return -ENOMEM;
176	return 0;
177	}
178
179	void ceph_debugfs_cleanup(void)
180	{
181	debugfs_remove(ceph_debugfs_dir);
182	}
183
184	int ceph_debugfs_client_init(struct ceph_client *client)
185	{
186	int ret = -ENOMEM;
187	char name[80];
188
189	snprintf(name, sizeof(name), "%pU.client%lld", &client->fsid,
190	client->monc.auth->global_id);
191
192	client->debugfs_dir = debugfs_create_dir(name, ceph_debugfs_dir);
193	if (!client->debugfs_dir)
194	goto out;
195
196	client->monc.debugfs_file = debugfs_create_file("monc",
197	0600,
198	client->debugfs_dir,
199	client,
200	&monc_show_fops);
201	if (!client->monc.debugfs_file)
202	goto out;
203
204	client->osdc.debugfs_file = debugfs_create_file("osdc",
205	0600,
206	client->debugfs_dir,
207	client,
208	&osdc_show_fops);
209	if (!client->osdc.debugfs_file)
210	goto out;
211
212	client->debugfs_monmap = debugfs_create_file("monmap",
213	0600,
214	client->debugfs_dir,
215	client,
216	&monmap_show_fops);
217	if (!client->debugfs_monmap)
218	goto out;
219
220	client->debugfs_osdmap = debugfs_create_file("osdmap",
221	0600,
222	client->debugfs_dir,
223	client,
224	&osdmap_show_fops);
225	if (!client->debugfs_osdmap)
226	goto out;
227
228	return 0;
229
230	out:
231	ceph_debugfs_client_cleanup(client);
232	return ret;
233	}
234
235	void ceph_debugfs_client_cleanup(struct ceph_client *client)
236	{
237	debugfs_remove(client->debugfs_osdmap);
238	debugfs_remove(client->debugfs_monmap);
239	debugfs_remove(client->osdc.debugfs_file);
240	debugfs_remove(client->monc.debugfs_file);
241	debugfs_remove(client->debugfs_dir);
242	}
243
244	#else /* CONFIG_DEBUG_FS */
245
246	int ceph_debugfs_init(void)
247	{
248	return 0;
249	}
250
251	void ceph_debugfs_cleanup(void)
252	{
253	}
254
602adf40	255	int ceph_debugfs_client_init(struct ceph_client *client)
3d14c5d2 YS	256	{
	257	return 0;
	258	}
	259
	260	void ceph_debugfs_client_cleanup(struct ceph_client *client)
	261	{
	262	}
	263
	264	#endif /* CONFIG_DEBUG_FS */
	265
	266	EXPORT_SYMBOL(ceph_debugfs_init);
	267	EXPORT_SYMBOL(ceph_debugfs_cleanup);