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_printf(s, "\t(unsafe)"); 75 else 76 seq_printf(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 } 97 98 if (req->r_old_dentry) { 99 path = ceph_mdsc_build_path(req->r_old_dentry, &pathlen, 100 &pathbase, 0); 101 if (IS_ERR(path)) 102 path = NULL; 103 spin_lock(&req->r_old_dentry->d_lock); 104 seq_printf(s, " #%llx/%.*s (%s)", 105 ceph_ino(req->r_old_dentry_dir), 106 req->r_old_dentry->d_name.len, 107 req->r_old_dentry->d_name.name, 108 path ? path : ""); 109 spin_unlock(&req->r_old_dentry->d_lock); 110 kfree(path); 111 } else if (req->r_path2) { 112 if (req->r_ino2.ino) 113 seq_printf(s, " #%llx/%s", req->r_ino2.ino, 114 req->r_path2); 115 else 116 seq_printf(s, " %s", req->r_path2); 117 } 118 119 seq_printf(s, "\n"); 120 } 121 mutex_unlock(&mdsc->mutex); 122 123 return 0; 124 } 125 126 static int caps_show(struct seq_file *s, void *p) 127 { 128 struct ceph_fs_client *fsc = s->private; 129 int total, avail, used, reserved, min; 130 131 ceph_reservation_status(fsc, &total, &avail, &used, &reserved, &min); 132 seq_printf(s, "total\t\t%d\n" 133 "avail\t\t%d\n" 134 "used\t\t%d\n" 135 "reserved\t%d\n" 136 "min\t%d\n", 137 total, avail, used, reserved, min); 138 return 0; 139 } 140 141 static int dentry_lru_show(struct seq_file *s, void *ptr) 142 { 143 struct ceph_fs_client *fsc = s->private; 144 struct ceph_mds_client *mdsc = fsc->mdsc; 145 struct ceph_dentry_info *di; 146 147 spin_lock(&mdsc->dentry_lru_lock); 148 list_for_each_entry(di, &mdsc->dentry_lru, lru) { 149 struct dentry *dentry = di->dentry; 150 seq_printf(s, "%p %p\t%.*s\n", 151 di, dentry, dentry->d_name.len, dentry->d_name.name); 152 } 153 spin_unlock(&mdsc->dentry_lru_lock); 154 155 return 0; 156 } 157 158 CEPH_DEFINE_SHOW_FUNC(mdsmap_show) 159 CEPH_DEFINE_SHOW_FUNC(mdsc_show) 160 CEPH_DEFINE_SHOW_FUNC(caps_show) 161 CEPH_DEFINE_SHOW_FUNC(dentry_lru_show) 162 163 164 /* 165 * debugfs 166 */ 167 static int congestion_kb_set(void *data, u64 val) 168 { 169 struct ceph_fs_client *fsc = (struct ceph_fs_client *)data; 170 171 fsc->mount_options->congestion_kb = (int)val; 172 return 0; 173 } 174 175 static int congestion_kb_get(void *data, u64 *val) 176 { 177 struct ceph_fs_client *fsc = (struct ceph_fs_client *)data; 178 179 *val = (u64)fsc->mount_options->congestion_kb; 180 return 0; 181 } 182 183 DEFINE_SIMPLE_ATTRIBUTE(congestion_kb_fops, congestion_kb_get, 184 congestion_kb_set, "%llu\n"); 185 186 187 void ceph_fs_debugfs_cleanup(struct ceph_fs_client *fsc) 188 { 189 dout("ceph_fs_debugfs_cleanup\n"); 190 debugfs_remove(fsc->debugfs_bdi); 191 debugfs_remove(fsc->debugfs_congestion_kb); 192 debugfs_remove(fsc->debugfs_mdsmap); 193 debugfs_remove(fsc->debugfs_caps); 194 debugfs_remove(fsc->debugfs_mdsc); 195 debugfs_remove(fsc->debugfs_dentry_lru); 196 } 197 198 int ceph_fs_debugfs_init(struct ceph_fs_client *fsc) 199 { 200 char name[100]; 201 int err = -ENOMEM; 202 203 dout("ceph_fs_debugfs_init\n"); 204 fsc->debugfs_congestion_kb = 205 debugfs_create_file("writeback_congestion_kb", 206 0600, 207 fsc->client->debugfs_dir, 208 fsc, 209 &congestion_kb_fops); 210 if (!fsc->debugfs_congestion_kb) 211 goto out; 212 213 snprintf(name, sizeof(name), "../../bdi/%s", 214 dev_name(fsc->backing_dev_info.dev)); 215 fsc->debugfs_bdi = 216 debugfs_create_symlink("bdi", 217 fsc->client->debugfs_dir, 218 name); 219 if (!fsc->debugfs_bdi) 220 goto out; 221 222 fsc->debugfs_mdsmap = debugfs_create_file("mdsmap", 223 0600, 224 fsc->client->debugfs_dir, 225 fsc, 226 &mdsmap_show_fops); 227 if (!fsc->debugfs_mdsmap) 228 goto out; 229 230 fsc->debugfs_mdsc = debugfs_create_file("mdsc", 231 0600, 232 fsc->client->debugfs_dir, 233 fsc, 234 &mdsc_show_fops); 235 if (!fsc->debugfs_mdsc) 236 goto out; 237 238 fsc->debugfs_caps = debugfs_create_file("caps", 239 0400, 240 fsc->client->debugfs_dir, 241 fsc, 242 &caps_show_fops); 243 if (!fsc->debugfs_caps) 244 goto out; 245 246 fsc->debugfs_dentry_lru = debugfs_create_file("dentry_lru", 247 0600, 248 fsc->client->debugfs_dir, 249 fsc, 250 &dentry_lru_show_fops); 251 if (!fsc->debugfs_dentry_lru) 252 goto out; 253 254 return 0; 255 256 out: 257 ceph_fs_debugfs_cleanup(fsc); 258 return err; 259 } 260 261 262 #else /* CONFIG_DEBUG_FS */ 263 264 int ceph_fs_debugfs_init(struct ceph_fs_client *fsc) 265 { 266 return 0; 267 } 268 269 void ceph_fs_debugfs_cleanup(struct ceph_fs_client *fsc) 270 { 271 } 272 273 #endif /* CONFIG_DEBUG_FS */ 274