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 %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 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 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 } 154 155 CEPH_DEFINE_SHOW_FUNC(monmap_show) 156 CEPH_DEFINE_SHOW_FUNC(osdmap_show) 157 CEPH_DEFINE_SHOW_FUNC(monc_show) 158 CEPH_DEFINE_SHOW_FUNC(osdc_show) 159 160 int 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 } 167 168 void ceph_debugfs_cleanup(void) 169 { 170 debugfs_remove(ceph_debugfs_dir); 171 } 172 173 int 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; 221 222 out: 223 ceph_debugfs_client_cleanup(client); 224 return ret; 225 } 226 227 void 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 */ 238 239 int ceph_debugfs_init(void) 240 { 241 return 0; 242 } 243 244 void ceph_debugfs_cleanup(void) 245 { 246 } 247 248 int ceph_debugfs_client_init(struct ceph_client *client) 249 { 250 return 0; 251 } 252 253 void ceph_debugfs_client_cleanup(struct ceph_client *client) 254 { 255 } 256 257 #endif /* CONFIG_DEBUG_FS */ 258 259 EXPORT_SYMBOL(ceph_debugfs_init); 260 EXPORT_SYMBOL(ceph_debugfs_cleanup); 261