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) 64 seq_printf(s, "%lld\tmds%d\t", req->r_tid, req->r_mds); 65 else 66 seq_printf(s, "%lld\t(no request)\t", req->r_tid); 67 68 seq_printf(s, "%s", ceph_mds_op_name(req->r_op)); 69 70 if (req->r_got_unsafe) 71 seq_printf(s, "\t(unsafe)"); 72 else 73 seq_printf(s, "\t"); 74 75 if (req->r_inode) { 76 seq_printf(s, " #%llx", ceph_ino(req->r_inode)); 77 } else if (req->r_dentry) { 78 path = ceph_mdsc_build_path(req->r_dentry, &pathlen, 79 &pathbase, 0); 80 if (IS_ERR(path)) 81 path = NULL; 82 spin_lock(&req->r_dentry->d_lock); 83 seq_printf(s, " #%llx/%.*s (%s)", 84 ceph_ino(req->r_dentry->d_parent->d_inode), 85 req->r_dentry->d_name.len, 86 req->r_dentry->d_name.name, 87 path ? path : ""); 88 spin_unlock(&req->r_dentry->d_lock); 89 kfree(path); 90 } else if (req->r_path1) { 91 seq_printf(s, " #%llx/%s", req->r_ino1.ino, 92 req->r_path1); 93 } 94 95 if (req->r_old_dentry) { 96 path = ceph_mdsc_build_path(req->r_old_dentry, &pathlen, 97 &pathbase, 0); 98 if (IS_ERR(path)) 99 path = NULL; 100 spin_lock(&req->r_old_dentry->d_lock); 101 seq_printf(s, " #%llx/%.*s (%s)", 102 ceph_ino(req->r_old_dentry->d_parent->d_inode), 103 req->r_old_dentry->d_name.len, 104 req->r_old_dentry->d_name.name, 105 path ? path : ""); 106 spin_unlock(&req->r_old_dentry->d_lock); 107 kfree(path); 108 } else if (req->r_path2) { 109 if (req->r_ino2.ino) 110 seq_printf(s, " #%llx/%s", req->r_ino2.ino, 111 req->r_path2); 112 else 113 seq_printf(s, " %s", req->r_path2); 114 } 115 116 seq_printf(s, "\n"); 117 } 118 mutex_unlock(&mdsc->mutex); 119 120 return 0; 121 } 122 123 static int caps_show(struct seq_file *s, void *p) 124 { 125 struct ceph_fs_client *fsc = s->private; 126 int total, avail, used, reserved, min; 127 128 ceph_reservation_status(fsc, &total, &avail, &used, &reserved, &min); 129 seq_printf(s, "total\t\t%d\n" 130 "avail\t\t%d\n" 131 "used\t\t%d\n" 132 "reserved\t%d\n" 133 "min\t%d\n", 134 total, avail, used, reserved, min); 135 return 0; 136 } 137 138 static int dentry_lru_show(struct seq_file *s, void *ptr) 139 { 140 struct ceph_fs_client *fsc = s->private; 141 struct ceph_mds_client *mdsc = fsc->mdsc; 142 struct ceph_dentry_info *di; 143 144 spin_lock(&mdsc->dentry_lru_lock); 145 list_for_each_entry(di, &mdsc->dentry_lru, lru) { 146 struct dentry *dentry = di->dentry; 147 seq_printf(s, "%p %p\t%.*s\n", 148 di, dentry, dentry->d_name.len, dentry->d_name.name); 149 } 150 spin_unlock(&mdsc->dentry_lru_lock); 151 152 return 0; 153 } 154 155 CEPH_DEFINE_SHOW_FUNC(mdsmap_show) 156 CEPH_DEFINE_SHOW_FUNC(mdsc_show) 157 CEPH_DEFINE_SHOW_FUNC(caps_show) 158 CEPH_DEFINE_SHOW_FUNC(dentry_lru_show) 159 160 161 /* 162 * debugfs 163 */ 164 static int congestion_kb_set(void *data, u64 val) 165 { 166 struct ceph_fs_client *fsc = (struct ceph_fs_client *)data; 167 168 fsc->mount_options->congestion_kb = (int)val; 169 return 0; 170 } 171 172 static int congestion_kb_get(void *data, u64 *val) 173 { 174 struct ceph_fs_client *fsc = (struct ceph_fs_client *)data; 175 176 *val = (u64)fsc->mount_options->congestion_kb; 177 return 0; 178 } 179 180 DEFINE_SIMPLE_ATTRIBUTE(congestion_kb_fops, congestion_kb_get, 181 congestion_kb_set, "%llu\n"); 182 183 184 void ceph_fs_debugfs_cleanup(struct ceph_fs_client *fsc) 185 { 186 dout("ceph_fs_debugfs_cleanup\n"); 187 debugfs_remove(fsc->debugfs_bdi); 188 debugfs_remove(fsc->debugfs_congestion_kb); 189 debugfs_remove(fsc->debugfs_mdsmap); 190 debugfs_remove(fsc->debugfs_caps); 191 debugfs_remove(fsc->debugfs_mdsc); 192 debugfs_remove(fsc->debugfs_dentry_lru); 193 } 194 195 int ceph_fs_debugfs_init(struct ceph_fs_client *fsc) 196 { 197 char name[100]; 198 int err = -ENOMEM; 199 200 dout("ceph_fs_debugfs_init\n"); 201 fsc->debugfs_congestion_kb = 202 debugfs_create_file("writeback_congestion_kb", 203 0600, 204 fsc->client->debugfs_dir, 205 fsc, 206 &congestion_kb_fops); 207 if (!fsc->debugfs_congestion_kb) 208 goto out; 209 210 dout("a\n"); 211 212 snprintf(name, sizeof(name), "../../bdi/%s", 213 dev_name(fsc->backing_dev_info.dev)); 214 fsc->debugfs_bdi = 215 debugfs_create_symlink("bdi", 216 fsc->client->debugfs_dir, 217 name); 218 if (!fsc->debugfs_bdi) 219 goto out; 220 221 dout("b\n"); 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 dout("ca\n"); 231 fsc->debugfs_mdsc = debugfs_create_file("mdsc", 232 0600, 233 fsc->client->debugfs_dir, 234 fsc, 235 &mdsc_show_fops); 236 if (!fsc->debugfs_mdsc) 237 goto out; 238 239 dout("da\n"); 240 fsc->debugfs_caps = debugfs_create_file("caps", 241 0400, 242 fsc->client->debugfs_dir, 243 fsc, 244 &caps_show_fops); 245 if (!fsc->debugfs_caps) 246 goto out; 247 248 dout("ea\n"); 249 fsc->debugfs_dentry_lru = debugfs_create_file("dentry_lru", 250 0600, 251 fsc->client->debugfs_dir, 252 fsc, 253 &dentry_lru_show_fops); 254 if (!fsc->debugfs_dentry_lru) 255 goto out; 256 257 return 0; 258 259 out: 260 ceph_fs_debugfs_cleanup(fsc); 261 return err; 262 } 263 264 265 #else /* CONFIG_DEBUG_FS */ 266 267 int ceph_fs_debugfs_init(struct ceph_fs_client *fsc) 268 { 269 return 0; 270 } 271 272 void ceph_fs_debugfs_cleanup(struct ceph_fs_client *fsc) 273 { 274 } 275 276 #endif /* CONFIG_DEBUG_FS */ 277