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 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 } 116 117 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 int)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 dout("ceph_debugfs_client_init %p %s\n", client, name); 193 194 BUG_ON(client->debugfs_dir); 195 client->debugfs_dir = debugfs_create_dir(name, ceph_debugfs_dir); 196 if (!client->debugfs_dir) 197 goto out; 198 199 client->monc.debugfs_file = debugfs_create_file("monc", 200 0600, 201 client->debugfs_dir, 202 client, 203 &monc_show_fops); 204 if (!client->monc.debugfs_file) 205 goto out; 206 207 client->osdc.debugfs_file = debugfs_create_file("osdc", 208 0600, 209 client->debugfs_dir, 210 client, 211 &osdc_show_fops); 212 if (!client->osdc.debugfs_file) 213 goto out; 214 215 client->debugfs_monmap = debugfs_create_file("monmap", 216 0600, 217 client->debugfs_dir, 218 client, 219 &monmap_show_fops); 220 if (!client->debugfs_monmap) 221 goto out; 222 223 client->debugfs_osdmap = debugfs_create_file("osdmap", 224 0600, 225 client->debugfs_dir, 226 client, 227 &osdmap_show_fops); 228 if (!client->debugfs_osdmap) 229 goto out; 230 231 return 0; 232 233 out: 234 ceph_debugfs_client_cleanup(client); 235 return ret; 236 } 237 238 void ceph_debugfs_client_cleanup(struct ceph_client *client) 239 { 240 dout("ceph_debugfs_client_cleanup %p\n", client); 241 debugfs_remove(client->debugfs_osdmap); 242 debugfs_remove(client->debugfs_monmap); 243 debugfs_remove(client->osdc.debugfs_file); 244 debugfs_remove(client->monc.debugfs_file); 245 debugfs_remove(client->debugfs_dir); 246 } 247 248 #else /* CONFIG_DEBUG_FS */ 249 250 int ceph_debugfs_init(void) 251 { 252 return 0; 253 } 254 255 void ceph_debugfs_cleanup(void) 256 { 257 } 258 259 int ceph_debugfs_client_init(struct ceph_client *client) 260 { 261 return 0; 262 } 263 264 void ceph_debugfs_client_cleanup(struct ceph_client *client) 265 { 266 } 267 268 #endif /* CONFIG_DEBUG_FS */ 269 270 EXPORT_SYMBOL(ceph_debugfs_init); 271 EXPORT_SYMBOL(ceph_debugfs_cleanup); 272