- struct mgs_obd *mgs = &obd->u.mgs;
- struct lvfs_run_ctxt saved;
- int rc = 0;
-
- class_disconnect_exports(obd); /* cleans up client info too */
-
- push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
-
- if (mgs->mgs_configs_dir) {
- /*CERROR("configs dir dcount=%d\n",
- atomic_read(&mgs->mgs_configs_dir->d_count));*/
- l_dput(mgs->mgs_configs_dir);
- mgs->mgs_configs_dir = NULL;
- }
-
- shrink_dcache_parent(mgs->mgs_fid_de);
- /*CERROR("fid dir dcount=%d\n",
- atomic_read(&mgs->mgs_fid_de->d_count));*/
- dput(mgs->mgs_fid_de);
-
- pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
+ 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;
+}