[deliverable/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
 *      .../client_options - libceph-only (i.e. not rbd or cephfs) options
 *      .../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 ceph_osdmap *map = client->osdc.osdmap;
	struct rb_node *n;

	if (map == NULL)
		return 0;

	seq_printf(s, "epoch %d\n", map->epoch);
	seq_printf(s, "flags%s%s\n",
		   (map->flags & CEPH_OSDMAP_NEARFULL) ?  " NEARFULL" : "",
		   (map->flags & CEPH_OSDMAP_FULL) ?  " FULL" : "");

	for (n = rb_first(&map->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, "pool %lld pg_num %u (%d) read_tier %lld write_tier %lld\n",
			   pool->id, pool->pg_num, pool->pg_num_mask,
			   pool->read_tier, pool->write_tier);
	}
	for (i = 0; i < map->max_osd; i++) {
		struct ceph_entity_addr *addr = &map->osd_addr[i];
		int state = map->osd_state[i];
		char sb[64];

		seq_printf(s, "osd%d\t%s\t%3d%%\t(%s)\t%3d%%\n",
			   i, ceph_pr_addr(&addr->in_addr),
			   ((map->osd_weight[i]*100) >> 16),
			   ceph_osdmap_state_str(sb, sizeof(sb), state),
			   ((ceph_get_primary_affinity(map, i)*100) >> 16));
	}
	for (n = rb_first(&map->pg_temp); n; n = rb_next(n)) {
		struct ceph_pg_mapping *pg =
			rb_entry(n, struct ceph_pg_mapping, node);

		seq_printf(s, "pg_temp %llu.%x [", pg->pgid.pool,
			   pg->pgid.seed);
		for (i = 0; i < pg->pg_temp.len; i++)
			seq_printf(s, "%s%d", (i == 0 ? "" : ","),
				   pg->pg_temp.osds[i]);
		seq_printf(s, "]\n");
	}
	for (n = rb_first(&map->primary_temp); n; n = rb_next(n)) {
		struct ceph_pg_mapping *pg =
			rb_entry(n, struct ceph_pg_mapping, node);

		seq_printf(s, "primary_temp %llu.%x %d\n", pg->pgid.pool,
			   pg->pgid.seed, pg->primary_temp.osd);
	}

	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;
	int i;

	mutex_lock(&monc->mutex);

	for (i = 0; i < ARRAY_SIZE(monc->subs); i++) {
		seq_printf(s, "have %s %u", ceph_sub_str[i],
			   monc->subs[i].have);
		if (monc->subs[i].want)
			seq_printf(s, " want %llu%s",
				   le64_to_cpu(monc->subs[i].item.start),
				   (monc->subs[i].item.flags &
					CEPH_SUBSCRIBE_ONETIME ?  "" : "+"));
		seq_putc(s, '\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, "%llu statfs\n", req->tid);
		else if (op == CEPH_MSG_MON_GET_VERSION)
			seq_printf(s, "%llu mon_get_version", req->tid);
		else
			seq_printf(s, "%llu 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;
		unsigned int i;
		int opcode;

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

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

		seq_printf(s, "%.*s", req->r_base_oid.name_len,
			   req->r_base_oid.name);

		if (req->r_reassert_version.epoch)
			seq_printf(s, "\t%u'%llu",
			   (unsigned int)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 < req->r_num_ops; i++) {
			opcode = req->r_ops[i].op;
			seq_printf(s, "%s%s", (i == 0 ? "\t" : ","),
				   ceph_osd_op_name(opcode));
		}

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

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

	ret = ceph_print_client_options(s, client);
	if (ret)
		return ret;

	seq_putc(s, '\n');
	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)
CEPH_DEFINE_SHOW_FUNC(client_options_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);

	dout("ceph_debugfs_client_init %p %s\n", client, name);

	BUG_ON(client->debugfs_dir);
	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;

	client->debugfs_options = debugfs_create_file("client_options",
					0600,
					client->debugfs_dir,
					client,
					&client_options_show_fops);
	if (!client->debugfs_options)
		goto out;

	return 0;

out:
	ceph_debugfs_client_cleanup(client);
	return ret;
}

void ceph_debugfs_client_cleanup(struct ceph_client *client)
{
	dout("ceph_debugfs_client_cleanup %p\n", client);
	debugfs_remove(client->debugfs_options);
	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
5cf7bd30	25	* .../client_options - libceph-only (i.e. not rbd or cephfs) options
3d14c5d2 YS	26	* .../dentry_lru - dump contents of dentry lru
	27	* .../caps - expose cap (reservation) stats
	28	* .../bdi - symlink to ../../bdi/something
	29	*/
	30
	31	static struct dentry *ceph_debugfs_dir;
	32
	33	static int monmap_show(struct seq_file s, void p)
	34	{
	35	int i;
	36	struct ceph_client *client = s->private;
	37
	38	if (client->monc.monmap == NULL)
	39	return 0;
	40
	41	seq_printf(s, "epoch %d\n", client->monc.monmap->epoch);
	42	for (i = 0; i < client->monc.monmap->num_mon; i++) {
	43	struct ceph_entity_inst *inst =
	44	&client->monc.monmap->mon_inst[i];
	45
	46	seq_printf(s, "\t%s%lld\t%s\n",
	47	ENTITY_NAME(inst->name),
	48	ceph_pr_addr(&inst->addr.in_addr));
	49	}
	50	return 0;
	51	}
	52
	53	static int osdmap_show(struct seq_file s, void p)
	54	{
	55	int i;
	56	struct ceph_client *client = s->private;
35fea3a1	57	struct ceph_osdmap *map = client->osdc.osdmap;
3d14c5d2 YS	58	struct rb_node *n;
3d14c5d2 YS	59
35fea3a1	60	if (map == NULL)
3d14c5d2	61	return 0;
35fea3a1 ID	62
35fea3a1 ID	63	seq_printf(s, "epoch %d\n", map->epoch);
3d14c5d2	64	seq_printf(s, "flags%s%s\n",
35fea3a1 ID	65	(map->flags & CEPH_OSDMAP_NEARFULL) ? " NEARFULL" : "",
	66	(map->flags & CEPH_OSDMAP_FULL) ? " FULL" : "");
	67
	68	for (n = rb_first(&map->pg_pools); n; n = rb_next(n)) {
3d14c5d2 YS	69	struct ceph_pg_pool_info *pool =
3d14c5d2 YS	70	rb_entry(n, struct ceph_pg_pool_info, node);
35fea3a1	71
8a53f23f ID	72	seq_printf(s, "pool %lld pg_num %u (%d) read_tier %lld write_tier %lld\n",
	73	pool->id, pool->pg_num, pool->pg_num_mask,
	74	pool->read_tier, pool->write_tier);
3d14c5d2	75	}
35fea3a1 ID	76	for (i = 0; i < map->max_osd; i++) {
	77	struct ceph_entity_addr *addr = &map->osd_addr[i];
	78	int state = map->osd_state[i];
3d14c5d2 YS	79	char sb[64];
3d14c5d2 YS	80
2cfa34f2	81	seq_printf(s, "osd%d\t%s\t%3d%%\t(%s)\t%3d%%\n",
3d14c5d2	82	i, ceph_pr_addr(&addr->in_addr),
35fea3a1	83	((map->osd_weight[i]*100) >> 16),
2cfa34f2 ID	84	ceph_osdmap_state_str(sb, sizeof(sb), state),
2cfa34f2 ID	85	((ceph_get_primary_affinity(map, i)*100) >> 16));
3d14c5d2	86	}
1c00240e ID	87	for (n = rb_first(&map->pg_temp); n; n = rb_next(n)) {
	88	struct ceph_pg_mapping *pg =
	89	rb_entry(n, struct ceph_pg_mapping, node);
	90
	91	seq_printf(s, "pg_temp %llu.%x [", pg->pgid.pool,
	92	pg->pgid.seed);
35a935d7	93	for (i = 0; i < pg->pg_temp.len; i++)
1c00240e	94	seq_printf(s, "%s%d", (i == 0 ? "" : ","),
35a935d7	95	pg->pg_temp.osds[i]);
1c00240e ID	96	seq_printf(s, "]\n");
1c00240e ID	97	}
9686f94c ID	98	for (n = rb_first(&map->primary_temp); n; n = rb_next(n)) {
	99	struct ceph_pg_mapping *pg =
	100	rb_entry(n, struct ceph_pg_mapping, node);
	101
	102	seq_printf(s, "primary_temp %llu.%x %d\n", pg->pgid.pool,
	103	pg->pgid.seed, pg->primary_temp.osd);
	104	}
35fea3a1	105
3d14c5d2 YS	106	return 0;
	107	}
	108
	109	static int monc_show(struct seq_file s, void p)
	110	{
	111	struct ceph_client *client = s->private;
	112	struct ceph_mon_generic_request *req;
	113	struct ceph_mon_client *monc = &client->monc;
	114	struct rb_node *rp;
82dcabad	115	int i;
3d14c5d2 YS	116
	117	mutex_lock(&monc->mutex);
	118
82dcabad ID	119	for (i = 0; i < ARRAY_SIZE(monc->subs); i++) {
	120	seq_printf(s, "have %s %u", ceph_sub_str[i],
	121	monc->subs[i].have);
	122	if (monc->subs[i].want)
	123	seq_printf(s, " want %llu%s",
	124	le64_to_cpu(monc->subs[i].item.start),
	125	(monc->subs[i].item.flags &
	126	CEPH_SUBSCRIBE_ONETIME ? "" : "+"));
	127	seq_putc(s, '\n');
	128	}
3d14c5d2 YS	129
	130	for (rp = rb_first(&monc->generic_request_tree); rp; rp = rb_next(rp)) {
	131	__u16 op;
	132	req = rb_entry(rp, struct ceph_mon_generic_request, node);
	133	op = le16_to_cpu(req->request->hdr.type);
	134	if (op == CEPH_MSG_STATFS)
002b36ba	135	seq_printf(s, "%llu statfs\n", req->tid);
513a8243 ID	136	else if (op == CEPH_MSG_MON_GET_VERSION)
513a8243 ID	137	seq_printf(s, "%llu mon_get_version", req->tid);
3d14c5d2	138	else
002b36ba	139	seq_printf(s, "%llu unknown\n", req->tid);
3d14c5d2 YS	140	}
	141
	142	mutex_unlock(&monc->mutex);
	143	return 0;
	144	}
	145
	146	static int osdc_show(struct seq_file s, void pp)
	147	{
	148	struct ceph_client *client = s->private;
	149	struct ceph_osd_client *osdc = &client->osdc;
	150	struct rb_node *p;
	151
	152	mutex_lock(&osdc->request_mutex);
	153	for (p = rb_first(&osdc->requests); p; p = rb_next(p)) {
	154	struct ceph_osd_request *req;
79528734	155	unsigned int i;
1b83bef2	156	int opcode;
3d14c5d2 YS	157
	158	req = rb_entry(p, struct ceph_osd_request, r_node);
	159
5b191d99	160	seq_printf(s, "%lld\tosd%d\t%lld.%x\t", req->r_tid,
3d14c5d2	161	req->r_osd ? req->r_osd->o_osd : -1,
5b191d99	162	req->r_pgid.pool, req->r_pgid.seed);
3d14c5d2	163
3c972c95 ID	164	seq_printf(s, "%.*s", req->r_base_oid.name_len,
3c972c95 ID	165	req->r_base_oid.name);
3d14c5d2 YS	166
	167	if (req->r_reassert_version.epoch)
	168	seq_printf(s, "\t%u'%llu",
95c96174	169	(unsigned int)le32_to_cpu(req->r_reassert_version.epoch),
3d14c5d2 YS	170	le64_to_cpu(req->r_reassert_version.version));
	171	else
	172	seq_printf(s, "\t");
	173
1b83bef2	174	for (i = 0; i < req->r_num_ops; i++) {
79528734	175	opcode = req->r_ops[i].op;
25f89777 ID	176	seq_printf(s, "%s%s", (i == 0 ? "\t" : ","),
25f89777 ID	177	ceph_osd_op_name(opcode));
3d14c5d2 YS	178	}
	179
	180	seq_printf(s, "\n");
	181	}
	182	mutex_unlock(&osdc->request_mutex);
	183	return 0;
	184	}
	185
5cf7bd30 ID	186	static int client_options_show(struct seq_file s, void p)
	187	{
	188	struct ceph_client *client = s->private;
	189	int ret;
	190
	191	ret = ceph_print_client_options(s, client);
	192	if (ret)
	193	return ret;
	194
	195	seq_putc(s, '\n');
	196	return 0;
	197	}
	198
3d14c5d2 YS	199	CEPH_DEFINE_SHOW_FUNC(monmap_show)
	200	CEPH_DEFINE_SHOW_FUNC(osdmap_show)
	201	CEPH_DEFINE_SHOW_FUNC(monc_show)
	202	CEPH_DEFINE_SHOW_FUNC(osdc_show)
5cf7bd30	203	CEPH_DEFINE_SHOW_FUNC(client_options_show)
3d14c5d2 YS	204
	205	int ceph_debugfs_init(void)
	206	{
	207	ceph_debugfs_dir = debugfs_create_dir("ceph", NULL);
	208	if (!ceph_debugfs_dir)
	209	return -ENOMEM;
	210	return 0;
	211	}
	212
	213	void ceph_debugfs_cleanup(void)
	214	{
	215	debugfs_remove(ceph_debugfs_dir);
	216	}
	217
	218	int ceph_debugfs_client_init(struct ceph_client *client)
	219	{
	220	int ret = -ENOMEM;
	221	char name[80];
	222
	223	snprintf(name, sizeof(name), "%pU.client%lld", &client->fsid,
	224	client->monc.auth->global_id);
	225
d1c338a5 SW	226	dout("ceph_debugfs_client_init %p %s\n", client, name);
	227
	228	BUG_ON(client->debugfs_dir);
3d14c5d2 YS	229	client->debugfs_dir = debugfs_create_dir(name, ceph_debugfs_dir);
	230	if (!client->debugfs_dir)
	231	goto out;
	232
	233	client->monc.debugfs_file = debugfs_create_file("monc",
	234	0600,
	235	client->debugfs_dir,
	236	client,
	237	&monc_show_fops);
	238	if (!client->monc.debugfs_file)
	239	goto out;
	240
	241	client->osdc.debugfs_file = debugfs_create_file("osdc",
	242	0600,
	243	client->debugfs_dir,
	244	client,
	245	&osdc_show_fops);
	246	if (!client->osdc.debugfs_file)
	247	goto out;
	248
	249	client->debugfs_monmap = debugfs_create_file("monmap",
	250	0600,
	251	client->debugfs_dir,
	252	client,
	253	&monmap_show_fops);
	254	if (!client->debugfs_monmap)
	255	goto out;
	256
	257	client->debugfs_osdmap = debugfs_create_file("osdmap",
	258	0600,
	259	client->debugfs_dir,
	260	client,
	261	&osdmap_show_fops);
	262	if (!client->debugfs_osdmap)
	263	goto out;
	264
5cf7bd30 ID	265	client->debugfs_options = debugfs_create_file("client_options",
	266	0600,
	267	client->debugfs_dir,
	268	client,
	269	&client_options_show_fops);
	270	if (!client->debugfs_options)
	271	goto out;
	272
3d14c5d2 YS	273	return 0;
	274
	275	out:
	276	ceph_debugfs_client_cleanup(client);
	277	return ret;
	278	}
	279
	280	void ceph_debugfs_client_cleanup(struct ceph_client *client)
	281	{
d1c338a5	282	dout("ceph_debugfs_client_cleanup %p\n", client);
5cf7bd30	283	debugfs_remove(client->debugfs_options);
3d14c5d2 YS	284	debugfs_remove(client->debugfs_osdmap);
	285	debugfs_remove(client->debugfs_monmap);
	286	debugfs_remove(client->osdc.debugfs_file);
	287	debugfs_remove(client->monc.debugfs_file);
	288	debugfs_remove(client->debugfs_dir);
	289	}
	290
	291	#else /* CONFIG_DEBUG_FS */
	292
	293	int ceph_debugfs_init(void)
	294	{
	295	return 0;
	296	}
	297
	298	void ceph_debugfs_cleanup(void)
	299	{
	300	}
	301
602adf40	302	int ceph_debugfs_client_init(struct ceph_client *client)
3d14c5d2 YS	303	{
	304	return 0;
	305	}
	306
	307	void ceph_debugfs_client_cleanup(struct ceph_client *client)
	308	{
	309	}
	310
	311	#endif /* CONFIG_DEBUG_FS */
	312
	313	EXPORT_SYMBOL(ceph_debugfs_init);
	314	EXPORT_SYMBOL(ceph_debugfs_cleanup);