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 #include "super.h" 16 17 #ifdef CONFIG_DEBUG_FS 18 19 #include "mds_client.h" 20 21 static int mdsmap_show(struct seq_file *s, void *p) 22 { 23 int i; 24 struct ceph_fs_client *fsc = s->private; 25 26 if (fsc->mdsc == NULL || fsc->mdsc->mdsmap == NULL) 27 return 0; 28 seq_printf(s, "epoch %d\n", fsc->mdsc->mdsmap->m_epoch); 29 seq_printf(s, "root %d\n", fsc->mdsc->mdsmap->m_root); 30 seq_printf(s, "session_timeout %d\n", 31 fsc->mdsc->mdsmap->m_session_timeout); 32 seq_printf(s, "session_autoclose %d\n", 33 fsc->mdsc->mdsmap->m_session_autoclose); 34 for (i = 0; i < fsc->mdsc->mdsmap->m_max_mds; i++) { 35 struct ceph_entity_addr *addr = 36 &fsc->mdsc->mdsmap->m_info[i].addr; 37 int state = fsc->mdsc->mdsmap->m_info[i].state; 38 39 seq_printf(s, "\tmds%d\t%s\t(%s)\n", i, 40 ceph_pr_addr(&addr->in_addr), 41 ceph_mds_state_name(state)); 42 } 43 return 0; 44 } 45 46 /* 47 * mdsc debugfs 48 */ 49 static int mdsc_show(struct seq_file *s, void *p) 50 { 51 struct ceph_fs_client *fsc = s->private; 52 struct ceph_mds_client *mdsc = fsc->mdsc; 53 struct ceph_mds_request *req; 54 struct rb_node *rp; 55 int pathlen; 56 u64 pathbase; 57 char *path; 58 59 mutex_lock(&mdsc->mutex); 60 for (rp = rb_first(&mdsc->request_tree); rp; rp = rb_next(rp)) { 61 req = rb_entry(rp, struct ceph_mds_request, r_node); 62 63 if (req->r_request && req->r_session) 64 seq_printf(s, "%lld\tmds%d\t", req->r_tid, 65 req->r_session->s_mds); 66 else if (!req->r_request) 67 seq_printf(s, "%lld\t(no request)\t", req->r_tid); 68 else 69 seq_printf(s, "%lld\t(no session)\t", req->r_tid); 70 71 seq_printf(s, "%s", ceph_mds_op_name(req->r_op)); 72 73 if (req->r_got_unsafe) 74 seq_puts(s, "\t(unsafe)"); 75 else 76 seq_puts(s, "\t"); 77 78 if (req->r_inode) { 79 seq_printf(s, " #%llx", ceph_ino(req->r_inode)); 80 } else if (req->r_dentry) { 81 path = ceph_mdsc_build_path(req->r_dentry, &pathlen, 82 &pathbase, 0); 83 if (IS_ERR(path)) 84 path = NULL; 85 spin_lock(&req->r_dentry->d_lock); 86 seq_printf(s, " #%llx/%.*s (%s)", 87 ceph_ino(req->r_dentry->d_parent->d_inode), 88 req->r_dentry->d_name.len, 89 req->r_dentry->d_name.name, 90 path ? path : ""); 91 spin_unlock(&req->r_dentry->d_lock); 92 kfree(path); 93 } else if (req->r_path1) { 94 seq_printf(s, " #%llx/%s", req->r_ino1.ino, 95 req->r_path1); 96 } else { 97 seq_printf(s, " #%llx", req->r_ino1.ino); 98 } 99 100 if (req->r_old_dentry) { 101 path = ceph_mdsc_build_path(req->r_old_dentry, &pathlen, 102 &pathbase, 0); 103 if (IS_ERR(path)) 104 path = NULL; 105 spin_lock(&req->r_old_dentry->d_lock); 106 seq_printf(s, " #%llx/%.*s (%s)", 107 req->r_old_dentry_dir ? 108 ceph_ino(req->r_old_dentry_dir) : 0, 109 req->r_old_dentry->d_name.len, 110 req->r_old_dentry->d_name.name, 111 path ? path : ""); 112 spin_unlock(&req->r_old_dentry->d_lock); 113 kfree(path); 114 } else if (req->r_path2) { 115 if (req->r_ino2.ino) 116 seq_printf(s, " #%llx/%s", req->r_ino2.ino, 117 req->r_path2); 118 else 119 seq_printf(s, " %s", req->r_path2); 120 } 121 122 seq_puts(s, "\n"); 123 } 124 mutex_unlock(&mdsc->mutex); 125 126 return 0; 127 } 128 129 static int caps_show(struct seq_file *s, void *p) 130 { 131 struct ceph_fs_client *fsc = s->private; 132 int total, avail, used, reserved, min; 133 134 ceph_reservation_status(fsc, &total, &avail, &used, &reserved, &min); 135 seq_printf(s, "total\t\t%d\n" 136 "avail\t\t%d\n" 137 "used\t\t%d\n" 138 "reserved\t%d\n" 139 "min\t%d\n", 140 total, avail, used, reserved, min); 141 return 0; 142 } 143 144 static int dentry_lru_show(struct seq_file *s, void *ptr) 145 { 146 struct ceph_fs_client *fsc = s->private; 147 struct ceph_mds_client *mdsc = fsc->mdsc; 148 struct ceph_dentry_info *di; 149 150 spin_lock(&mdsc->dentry_lru_lock); 151 list_for_each_entry(di, &mdsc->dentry_lru, lru) { 152 struct dentry *dentry = di->dentry; 153 seq_printf(s, "%p %p\t%.*s\n", 154 di, dentry, dentry->d_name.len, dentry->d_name.name); 155 } 156 spin_unlock(&mdsc->dentry_lru_lock); 157 158 return 0; 159 } 160 161 static int mds_sessions_show(struct seq_file *s, void *ptr) 162 { 163 struct ceph_fs_client *fsc = s->private; 164 struct ceph_mds_client *mdsc = fsc->mdsc; 165 struct ceph_auth_client *ac = fsc->client->monc.auth; 166 struct ceph_options *opt = fsc->client->options; 167 int mds = -1; 168 169 mutex_lock(&mdsc->mutex); 170 171 /* The 'num' portion of an 'entity name' */ 172 seq_printf(s, "global_id %llu\n", ac->global_id); 173 174 /* The -o name mount argument */ 175 seq_printf(s, "name \"%s\"\n", opt->name ? opt->name : ""); 176 177 /* The list of MDS session rank+state */ 178 for (mds = 0; mds < mdsc->max_sessions; mds++) { 179 struct ceph_mds_session *session = 180 __ceph_lookup_mds_session(mdsc, mds); 181 if (!session) { 182 continue; 183 } 184 mutex_unlock(&mdsc->mutex); 185 seq_printf(s, "mds.%d %s\n", 186 session->s_mds, 187 ceph_session_state_name(session->s_state)); 188 189 ceph_put_mds_session(session); 190 mutex_lock(&mdsc->mutex); 191 } 192 mutex_unlock(&mdsc->mutex); 193 194 return 0; 195 } 196 197 CEPH_DEFINE_SHOW_FUNC(mdsmap_show) 198 CEPH_DEFINE_SHOW_FUNC(mdsc_show) 199 CEPH_DEFINE_SHOW_FUNC(caps_show) 200 CEPH_DEFINE_SHOW_FUNC(dentry_lru_show) 201 CEPH_DEFINE_SHOW_FUNC(mds_sessions_show) 202 203 204 /* 205 * debugfs 206 */ 207 static int congestion_kb_set(void *data, u64 val) 208 { 209 struct ceph_fs_client *fsc = (struct ceph_fs_client *)data; 210 211 fsc->mount_options->congestion_kb = (int)val; 212 return 0; 213 } 214 215 static int congestion_kb_get(void *data, u64 *val) 216 { 217 struct ceph_fs_client *fsc = (struct ceph_fs_client *)data; 218 219 *val = (u64)fsc->mount_options->congestion_kb; 220 return 0; 221 } 222 223 DEFINE_SIMPLE_ATTRIBUTE(congestion_kb_fops, congestion_kb_get, 224 congestion_kb_set, "%llu\n"); 225 226 227 void ceph_fs_debugfs_cleanup(struct ceph_fs_client *fsc) 228 { 229 dout("ceph_fs_debugfs_cleanup\n"); 230 debugfs_remove(fsc->debugfs_bdi); 231 debugfs_remove(fsc->debugfs_congestion_kb); 232 debugfs_remove(fsc->debugfs_mdsmap); 233 debugfs_remove(fsc->debugfs_mds_sessions); 234 debugfs_remove(fsc->debugfs_caps); 235 debugfs_remove(fsc->debugfs_mdsc); 236 debugfs_remove(fsc->debugfs_dentry_lru); 237 } 238 239 int ceph_fs_debugfs_init(struct ceph_fs_client *fsc) 240 { 241 char name[100]; 242 int err = -ENOMEM; 243 244 dout("ceph_fs_debugfs_init\n"); 245 BUG_ON(!fsc->client->debugfs_dir); 246 fsc->debugfs_congestion_kb = 247 debugfs_create_file("writeback_congestion_kb", 248 0600, 249 fsc->client->debugfs_dir, 250 fsc, 251 &congestion_kb_fops); 252 if (!fsc->debugfs_congestion_kb) 253 goto out; 254 255 snprintf(name, sizeof(name), "../../bdi/%s", 256 dev_name(fsc->backing_dev_info.dev)); 257 fsc->debugfs_bdi = 258 debugfs_create_symlink("bdi", 259 fsc->client->debugfs_dir, 260 name); 261 if (!fsc->debugfs_bdi) 262 goto out; 263 264 fsc->debugfs_mdsmap = debugfs_create_file("mdsmap", 265 0600, 266 fsc->client->debugfs_dir, 267 fsc, 268 &mdsmap_show_fops); 269 if (!fsc->debugfs_mdsmap) 270 goto out; 271 272 fsc->debugfs_mds_sessions = debugfs_create_file("mds_sessions", 273 0600, 274 fsc->client->debugfs_dir, 275 fsc, 276 &mds_sessions_show_fops); 277 if (!fsc->debugfs_mds_sessions) 278 goto out; 279 280 fsc->debugfs_mdsc = debugfs_create_file("mdsc", 281 0600, 282 fsc->client->debugfs_dir, 283 fsc, 284 &mdsc_show_fops); 285 if (!fsc->debugfs_mdsc) 286 goto out; 287 288 fsc->debugfs_caps = debugfs_create_file("caps", 289 0400, 290 fsc->client->debugfs_dir, 291 fsc, 292 &caps_show_fops); 293 if (!fsc->debugfs_caps) 294 goto out; 295 296 fsc->debugfs_dentry_lru = debugfs_create_file("dentry_lru", 297 0600, 298 fsc->client->debugfs_dir, 299 fsc, 300 &dentry_lru_show_fops); 301 if (!fsc->debugfs_dentry_lru) 302 goto out; 303 304 return 0; 305 306 out: 307 ceph_fs_debugfs_cleanup(fsc); 308 return err; 309 } 310 311 312 #else /* CONFIG_DEBUG_FS */ 313 314 int ceph_fs_debugfs_init(struct ceph_fs_client *fsc) 315 { 316 return 0; 317 } 318 319 void ceph_fs_debugfs_cleanup(struct ceph_fs_client *fsc) 320 { 321 } 322 323 #endif /* CONFIG_DEBUG_FS */ 324