- char fid_name[32];
- struct inode *inode;
- struct dentry *result;
- ENTRY;
-
- CDEBUG(D_DENTRY, "--> mgs_fid2dentry: ino/gen %lu/%u, sb %p\n",
- (unsigned long)ino, gen, mgs->mgs_sb);
-
- if (ino == 0)
- RETURN(ERR_PTR(-ESTALE));
-
- snprintf(fid_name, sizeof(fid_name), "0x%lx", (unsigned long)ino);
-
- /* under ext3 this is neither supposed to return bad inodes nor NULL
- inodes. */
- result = ll_lookup_one_len(fid_name, mgs->mgs_fid_de, strlen(fid_name));
- if (IS_ERR(result))
- RETURN(result);
-
- inode = result->d_inode;
- if (!inode)
- RETURN(ERR_PTR(-ENOENT));
-
- if (inode->i_generation == 0 || inode->i_nlink == 0) {
- LCONSOLE_WARN("Found inode with zero generation or link -- this"
- " may indicate disk corruption (inode: %lu, link:"
- " %lu, count: %d)\n", inode->i_ino,
- (unsigned long)inode->i_nlink,
- atomic_read(&inode->i_count));
- l_dput(result);
- RETURN(ERR_PTR(-ENOENT));
- }
-
- if (gen && inode->i_generation != gen) {
- /* we didn't find the right inode.. */
- CDEBUG(D_INODE, "found wrong generation: inode %lu, link: %lu, "
- "count: %d, generation %u/%u\n", inode->i_ino,
- (unsigned long)inode->i_nlink,
- atomic_read(&inode->i_count),
- inode->i_generation, gen);
- l_dput(result);
- RETURN(ERR_PTR(-ENOENT));
- }
-
- RETURN(result);
+ struct lu_fid fid;
+ struct dt_object *o;
+ struct lu_fid rfid;
+ struct dt_object *root;
+ struct dt_object *nm_config_file_obj;
+ struct nm_config_file *nm_config_file;
+ int rc;
+
+ ENTRY;
+
+ OBD_SET_CTXT_MAGIC(&mgs->mgs_obd->obd_lvfs_ctxt);
+ mgs->mgs_obd->obd_lvfs_ctxt.dt = mgs->mgs_bottom;
+
+ /* XXX: fix when support for N:1 layering is implemented */
+ LASSERT(mgs->mgs_dt_dev.dd_lu_dev.ld_site);
+ mgs->mgs_dt_dev.dd_lu_dev.ld_site->ls_top_dev =
+ &mgs->mgs_dt_dev.dd_lu_dev;
+
+ /* Setup the configs dir */
+ fid.f_seq = FID_SEQ_LOCAL_NAME;
+ fid.f_oid = 1;
+ fid.f_ver = 0;
+ rc = local_oid_storage_init(env, mgs->mgs_bottom, &fid, &mgs->mgs_los);
+ if (rc)
+ GOTO(out, rc);
+
+ rc = dt_root_get(env, mgs->mgs_bottom, &rfid);
+ if (rc)
+ GOTO(out_los, rc);
+
+ root = dt_locate_at(env, mgs->mgs_bottom, &rfid,
+ &mgs->mgs_dt_dev.dd_lu_dev, NULL);
+ if (unlikely(IS_ERR(root)))
+ GOTO(out_los, rc = PTR_ERR(root));
+
+ o = local_file_find_or_create(env, mgs->mgs_los, root,
+ MOUNT_CONFIGS_DIR,
+ S_IFDIR | S_IRUGO | S_IWUSR | S_IXUGO);
+ if (IS_ERR(o))
+ GOTO(out_root, rc = PTR_ERR(o));
+
+ if (!dt_try_as_dir(env, o)) {
+ dt_object_put(env, o);
+ GOTO(out_root, rc = -ENOTDIR);
+ }
+
+ mgs->mgs_configs_dir = o;
+
+ /* colocated MDT will cache config in target root dir */
+ nm_config_file_obj = local_index_find_or_create(env, mgs->mgs_los,
+ mgs->mgs_configs_dir,
+ LUSTRE_NODEMAP_NAME,
+ S_IFREG | S_IRUGO |
+ S_IWUSR,
+ &dt_nodemap_features);
+ if (IS_ERR(nm_config_file_obj))
+ GOTO(out_configs, rc = PTR_ERR(nm_config_file_obj));
+
+ if (nm_config_file_obj->do_index_ops == NULL) {
+ rc = nm_config_file_obj->do_ops->do_index_try(env,
+ nm_config_file_obj,
+ &dt_nodemap_features);
+ if (rc < 0) {
+ dt_object_put(env, nm_config_file_obj);
+ GOTO(out_configs, rc);
+ }
+ }
+ nm_config_file = nm_config_file_register_mgs(env, nm_config_file_obj,
+ mgs->mgs_los);
+ dt_object_put(env, nm_config_file_obj);
+ if (IS_ERR(nm_config_file)) {
+ CERROR("%s: error loading nodemap config file, file must be "
+ "removed via ldiskfs: rc = %ld\n",
+ mgs->mgs_obd->obd_name, PTR_ERR(nm_config_file));
+ GOTO(out_configs, rc = PTR_ERR(nm_config_file));
+ }
+ mgs->mgs_obd->u.obt.obt_nodemap_config_file = nm_config_file;
+
+ /* create directory to store nid table versions */
+ o = local_file_find_or_create(env, mgs->mgs_los, root, MGS_NIDTBL_DIR,
+ S_IFDIR | S_IRUGO | S_IWUSR | S_IXUGO);
+ if (IS_ERR(o))
+ GOTO(out_nm, rc = PTR_ERR(o));
+
+ mgs->mgs_nidtbl_dir = o;
+
+out_nm:
+ if (rc < 0) {
+ nm_config_file_deregister_mgs(env, nm_config_file);
+ mgs->mgs_obd->u.obt.obt_nodemap_config_file = NULL;
+ }
+out_configs:
+ if (rc < 0) {
+ dt_object_put(env, mgs->mgs_configs_dir);
+ mgs->mgs_configs_dir = NULL;
+ }
+out_root:
+ dt_object_put(env, root);
+out_los:
+ if (rc) {
+ local_oid_storage_fini(env, mgs->mgs_los);
+ mgs->mgs_los = NULL;
+ }
+out:
+ mgs->mgs_dt_dev.dd_lu_dev.ld_site->ls_top_dev = NULL;
+
+ return rc;