net/ceph/debugfs.c

   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 ceph_osdmap *map = client->osdc.osdmap;
  57         struct rb_node *n;
  58
  59         if (map == NULL)
  60                 return 0;
  61
  62         seq_printf(s, "epoch %d\n", map->epoch);
  63         seq_printf(s, "flags%s%s\n",
  64                    (map->flags & CEPH_OSDMAP_NEARFULL) ?  " NEARFULL" : "",
  65                    (map->flags & CEPH_OSDMAP_FULL) ?  " FULL" : "");
  66
  67         for (n = rb_first(&map->pg_pools); n; n = rb_next(n)) {
  68                 struct ceph_pg_pool_info *pool =
  69                         rb_entry(n, struct ceph_pg_pool_info, node);
  70
  71                 seq_printf(s, "pool %lld pg_num %u (%d) read_tier %lld write_tier %lld\n",
  72                            pool->id, pool->pg_num, pool->pg_num_mask,
  73                            pool->read_tier, pool->write_tier);
  74         }
  75         for (i = 0; i < map->max_osd; i++) {
  76                 struct ceph_entity_addr *addr = &map->osd_addr[i];
  77                 int state = map->osd_state[i];
  78                 char sb[64];
  79
  80                 seq_printf(s, "osd%d\t%s\t%3d%%\t(%s)\t%3d%%\n",
  81                            i, ceph_pr_addr(&addr->in_addr),
  82                            ((map->osd_weight[i]*100) >> 16),
  83                            ceph_osdmap_state_str(sb, sizeof(sb), state),
  84                            ((ceph_get_primary_affinity(map, i)*100) >> 16));
  85         }
  86         for (n = rb_first(&map->pg_temp); n; n = rb_next(n)) {
  87                 struct ceph_pg_mapping *pg =
  88                         rb_entry(n, struct ceph_pg_mapping, node);
  89
  90                 seq_printf(s, "pg_temp %llu.%x [", pg->pgid.pool,
  91                            pg->pgid.seed);
  92                 for (i = 0; i < pg->pg_temp.len; i++)
  93                         seq_printf(s, "%s%d", (i == 0 ? "" : ","),
  94                                    pg->pg_temp.osds[i]);
  95                 seq_printf(s, "]\n");
  96         }
  97         for (n = rb_first(&map->primary_temp); n; n = rb_next(n)) {
  98                 struct ceph_pg_mapping *pg =
  99                         rb_entry(n, struct ceph_pg_mapping, node);
 100
 101                 seq_printf(s, "primary_temp %llu.%x %d\n", pg->pgid.pool,
 102                            pg->pgid.seed, pg->primary_temp.osd);
 103         }
 104
 105         return 0;
 106 }
 107
 108 static int monc_show(struct seq_file *s, void *p)
 109 {
 110         struct ceph_client *client = s->private;
 111         struct ceph_mon_generic_request *req;
 112         struct ceph_mon_client *monc = &client->monc;
 113         struct rb_node *rp;
 114
 115         mutex_lock(&monc->mutex);
 116
 117         if (monc->have_mdsmap)
 118                 seq_printf(s, "have mdsmap %u\n", (unsigned int)monc->have_mdsmap);
 119         if (monc->have_osdmap)
 120                 seq_printf(s, "have osdmap %u\n", (unsigned int)monc->have_osdmap);
 121         if (monc->want_next_osdmap)
 122                 seq_printf(s, "want next osdmap\n");
 123
 124         for (rp = rb_first(&monc->generic_request_tree); rp; rp = rb_next(rp)) {
 125                 __u16 op;
 126                 req = rb_entry(rp, struct ceph_mon_generic_request, node);
 127                 op = le16_to_cpu(req->request->hdr.type);
 128                 if (op == CEPH_MSG_STATFS)
 129                         seq_printf(s, "%llu statfs\n", req->tid);
 130                 else if (op == CEPH_MSG_MON_GET_VERSION)
 131                         seq_printf(s, "%llu mon_get_version", req->tid);
 132                 else
 133                         seq_printf(s, "%llu unknown\n", req->tid);
 134         }
 135
 136         mutex_unlock(&monc->mutex);
 137         return 0;
 138 }
 139
 140 static int osdc_show(struct seq_file *s, void *pp)
 141 {
 142         struct ceph_client *client = s->private;
 143         struct ceph_osd_client *osdc = &client->osdc;
 144         struct rb_node *p;
 145
 146         mutex_lock(&osdc->request_mutex);
 147         for (p = rb_first(&osdc->requests); p; p = rb_next(p)) {
 148                 struct ceph_osd_request *req;
 149                 unsigned int i;
 150                 int opcode;
 151
 152                 req = rb_entry(p, struct ceph_osd_request, r_node);
 153
 154                 seq_printf(s, "%lld\tosd%d\t%lld.%x\t", req->r_tid,
 155                            req->r_osd ? req->r_osd->o_osd : -1,
 156                            req->r_pgid.pool, req->r_pgid.seed);
 157
 158                 seq_printf(s, "%.*s", req->r_base_oid.name_len,
 159                            req->r_base_oid.name);
 160
 161                 if (req->r_reassert_version.epoch)
 162                         seq_printf(s, "\t%u'%llu",
 163                            (unsigned int)le32_to_cpu(req->r_reassert_version.epoch),
 164                            le64_to_cpu(req->r_reassert_version.version));
 165                 else
 166                         seq_printf(s, "\t");
 167
 168                 for (i = 0; i < req->r_num_ops; i++) {
 169                         opcode = req->r_ops[i].op;
 170                         seq_printf(s, "%s%s", (i == 0 ? "\t" : ","),
 171                                    ceph_osd_op_name(opcode));
 172                 }
 173
 174                 seq_printf(s, "\n");
 175         }
 176         mutex_unlock(&osdc->request_mutex);
 177         return 0;
 178 }
 179
 180 CEPH_DEFINE_SHOW_FUNC(monmap_show)
 181 CEPH_DEFINE_SHOW_FUNC(osdmap_show)
 182 CEPH_DEFINE_SHOW_FUNC(monc_show)
 183 CEPH_DEFINE_SHOW_FUNC(osdc_show)
 184
 185 int ceph_debugfs_init(void)
 186 {
 187         ceph_debugfs_dir = debugfs_create_dir("ceph", NULL);
 188         if (!ceph_debugfs_dir)
 189                 return -ENOMEM;
 190         return 0;
 191 }
 192
 193 void ceph_debugfs_cleanup(void)
 194 {
 195         debugfs_remove(ceph_debugfs_dir);
 196 }
 197
 198 int ceph_debugfs_client_init(struct ceph_client *client)
 199 {
 200         int ret = -ENOMEM;
 201         char name[80];
 202
 203         snprintf(name, sizeof(name), "%pU.client%lld", &client->fsid,
 204                  client->monc.auth->global_id);
 205
 206         dout("ceph_debugfs_client_init %p %s\n", client, name);
 207
 208         BUG_ON(client->debugfs_dir);
 209         client->debugfs_dir = debugfs_create_dir(name, ceph_debugfs_dir);
 210         if (!client->debugfs_dir)
 211                 goto out;
 212
 213         client->monc.debugfs_file = debugfs_create_file("monc",
 214                                                       0600,
 215                                                       client->debugfs_dir,
 216                                                       client,
 217                                                       &monc_show_fops);
 218         if (!client->monc.debugfs_file)
 219                 goto out;
 220
 221         client->osdc.debugfs_file = debugfs_create_file("osdc",
 222                                                       0600,
 223                                                       client->debugfs_dir,
 224                                                       client,
 225                                                       &osdc_show_fops);
 226         if (!client->osdc.debugfs_file)
 227                 goto out;
 228
 229         client->debugfs_monmap = debugfs_create_file("monmap",
 230                                         0600,
 231                                         client->debugfs_dir,
 232                                         client,
 233                                         &monmap_show_fops);
 234         if (!client->debugfs_monmap)
 235                 goto out;
 236
 237         client->debugfs_osdmap = debugfs_create_file("osdmap",
 238                                         0600,
 239                                         client->debugfs_dir,
 240                                         client,
 241                                         &osdmap_show_fops);
 242         if (!client->debugfs_osdmap)
 243                 goto out;
 244
 245         return 0;
 246
 247 out:
 248         ceph_debugfs_client_cleanup(client);
 249         return ret;
 250 }
 251
 252 void ceph_debugfs_client_cleanup(struct ceph_client *client)
 253 {
 254         dout("ceph_debugfs_client_cleanup %p\n", client);
 255         debugfs_remove(client->debugfs_osdmap);
 256         debugfs_remove(client->debugfs_monmap);
 257         debugfs_remove(client->osdc.debugfs_file);
 258         debugfs_remove(client->monc.debugfs_file);
 259         debugfs_remove(client->debugfs_dir);
 260 }
 261
 262 #else  /* CONFIG_DEBUG_FS */
 263
 264 int ceph_debugfs_init(void)
 265 {
 266         return 0;
 267 }
 268
 269 void ceph_debugfs_cleanup(void)
 270 {
 271 }
 272
 273 int ceph_debugfs_client_init(struct ceph_client *client)
 274 {
 275         return 0;
 276 }
 277
 278 void ceph_debugfs_client_cleanup(struct ceph_client *client)
 279 {
 280 }
 281
 282 #endif  /* CONFIG_DEBUG_FS */
 283
 284 EXPORT_SYMBOL(ceph_debugfs_init);
 285 EXPORT_SYMBOL(ceph_debugfs_cleanup);