type = nm_idx_get_type(nodemap_id);
nodemap_id = nm_idx_set_type(nodemap_id, 0);
+ CDEBUG(D_INFO, "found config entry, nm_id %d type %d\n",
+ nodemap_id, type);
+
/* find the correct nodemap in the load list */
if (type == NODEMAP_RANGE_IDX || type == NODEMAP_UIDMAP_IDX ||
type == NODEMAP_GIDMAP_IDX) {
rc = PTR_ERR(new_config->nmc_default_nodemap);
} else {
rc = nodemap_idx_nodemap_add_update(
- new_config->nmc_default_nodemap, 0);
+ new_config->nmc_default_nodemap,
+ NM_ADD);
nodemap_putref(new_config->nmc_default_nodemap);
}
}
EXIT;
}
EXPORT_SYMBOL(nm_config_file_deregister);
+
+int nodemap_process_idx_pages(struct nodemap_config *config, union lu_page *lip,
+ struct lu_nodemap **recent_nodemap)
+{
+ struct nodemap_key *key;
+ union nodemap_rec *rec;
+ char *entry;
+ int j;
+ int k;
+ int rc = 0;
+ int size = dt_nodemap_features.dif_keysize_max +
+ dt_nodemap_features.dif_recsize_max;
+
+ for (j = 0; j < LU_PAGE_COUNT; j++) {
+ if (lip->lp_idx.lip_magic != LIP_MAGIC)
+ return -EINVAL;
+
+ /* get and process keys and records from page */
+ for (k = 0; k < lip->lp_idx.lip_nr; k++) {
+ entry = lip->lp_idx.lip_entries + k * size;
+ key = (struct nodemap_key *)entry;
+
+ entry += dt_nodemap_features.dif_keysize_max;
+ rec = (union nodemap_rec *)entry;
+
+ rc = nodemap_process_keyrec(config, key, rec,
+ recent_nodemap);
+ if (rc < 0)
+ return rc;
+ }
+ lip++;
+ }
+ return 0;
+}
+EXPORT_SYMBOL(nodemap_process_idx_pages);
+
+int nodemap_index_read(struct lu_env *env,
+ struct nm_config_file *ncf,
+ struct idx_info *ii,
+ const struct lu_rdpg *rdpg)
+{
+ struct dt_object *nodemap_idx = ncf->ncf_obj;
+ int rc = 0;
+
+ ii->ii_keysize = dt_nodemap_features.dif_keysize_max;
+ ii->ii_recsize = dt_nodemap_features.dif_recsize_max;
+
+ dt_read_lock(env, nodemap_idx, 0);
+ rc = dt_index_walk(env, nodemap_idx, rdpg, NULL, ii);
+ CDEBUG(D_INFO, "walked index, hashend %llx\n", ii->ii_hash_end);
+
+ dt_read_unlock(env, nodemap_idx);
+ return rc;
+}
+EXPORT_SYMBOL(nodemap_index_read);
+
+/**
+ * Returns the current nodemap configuration to MGC by walking the nodemap
+ * config index and storing it in the response buffer.
+ *
+ * \param req incoming MGS_CONFIG_READ request
+ * \retval 0 success
+ * \retval -EINVAL malformed request
+ * \retval -ENOTCONN client evicted/reconnected already
+ * \retval -ETIMEDOUT client timeout or network error
+ * \retval -ENOMEM
+ */
+int nodemap_get_config_req(struct obd_device *mgs_obd,
+ struct ptlrpc_request *req)
+{
+ struct mgs_config_body *body;
+ struct mgs_config_res *res;
+ struct lu_rdpg rdpg;
+ struct idx_info nodemap_ii;
+ struct ptlrpc_bulk_desc *desc;
+ struct l_wait_info lwi;
+ int i;
+ int page_count;
+ int bytes = 0;
+ int rc = 0;
+
+ body = req_capsule_client_get(&req->rq_pill, &RMF_MGS_CONFIG_BODY);
+ if (!body)
+ RETURN(-EINVAL);
+
+ if (body->mcb_type != CONFIG_T_NODEMAP)
+ RETURN(-EINVAL);
+
+ rdpg.rp_count = (body->mcb_units << body->mcb_bits);
+ rdpg.rp_npages = (rdpg.rp_count + PAGE_CACHE_SIZE - 1) >>
+ PAGE_CACHE_SHIFT;
+ if (rdpg.rp_npages > PTLRPC_MAX_BRW_PAGES)
+ RETURN(-EINVAL);
+
+ CDEBUG(D_INFO, "reading nodemap log, name '%s', size = %u\n",
+ body->mcb_name, rdpg.rp_count);
+
+ /* allocate pages to store the containers */
+ OBD_ALLOC(rdpg.rp_pages, sizeof(*rdpg.rp_pages) * rdpg.rp_npages);
+ if (rdpg.rp_pages == NULL)
+ RETURN(-ENOMEM);
+ for (i = 0; i < rdpg.rp_npages; i++) {
+ rdpg.rp_pages[i] = alloc_page(GFP_IOFS);
+ if (rdpg.rp_pages[i] == NULL)
+ GOTO(out, rc = -ENOMEM);
+ }
+
+ rdpg.rp_hash = body->mcb_offset;
+ nodemap_ii.ii_magic = IDX_INFO_MAGIC;
+ nodemap_ii.ii_flags = II_FL_NOHASH;
+
+ bytes = nodemap_index_read(req->rq_svc_thread->t_env,
+ mgs_obd->u.obt.obt_nodemap_config_file,
+ &nodemap_ii, &rdpg);
+ if (bytes < 0)
+ GOTO(out, rc = bytes);
+
+ res = req_capsule_server_get(&req->rq_pill, &RMF_MGS_CONFIG_RES);
+ if (res == NULL)
+ GOTO(out, rc = -EINVAL);
+ res->mcr_offset = nodemap_ii.ii_hash_end;
+ res->mcr_size = bytes;
+
+ page_count = (bytes + PAGE_CACHE_SIZE - 1) >> PAGE_CACHE_SHIFT;
+ LASSERT(page_count <= rdpg.rp_count);
+ desc = ptlrpc_prep_bulk_exp(req, page_count, 1,
+ PTLRPC_BULK_PUT_SOURCE |
+ PTLRPC_BULK_BUF_KIOV,
+ MGS_BULK_PORTAL,
+ &ptlrpc_bulk_kiov_pin_ops);
+ if (desc == NULL)
+ GOTO(out, rc = -ENOMEM);
+
+ for (i = 0; i < page_count && bytes > 0; i++) {
+ ptlrpc_prep_bulk_page_pin(desc, rdpg.rp_pages[i], 0,
+ min_t(int, bytes, PAGE_CACHE_SIZE));
+ bytes -= PAGE_CACHE_SIZE;
+ }
+
+ rc = target_bulk_io(req->rq_export, desc, &lwi);
+ ptlrpc_free_bulk(desc);
+
+out:
+ if (rdpg.rp_pages != NULL) {
+ for (i = 0; i < rdpg.rp_npages; i++)
+ if (rdpg.rp_pages[i] != NULL)
+ __free_page(rdpg.rp_pages[i]);
+ OBD_FREE(rdpg.rp_pages,
+ rdpg.rp_npages * sizeof(rdpg.rp_pages[0]));
+ }
+ return rc;
+}
+EXPORT_SYMBOL(nodemap_get_config_req);
git://git.whamcloud.com / fs / lustre-release.git / blobdiff