dt_version_set(env, nodemap_idx, ver + 1, th);
}
+static struct dt_object *nodemap_cache_find_create(const struct lu_env *env,
+ struct dt_device *dev,
+ struct local_oid_storage *los,
+ bool force_create)
+{
+ struct lu_fid root_fid;
+ struct dt_object *root_obj;
+ struct dt_object *nm_obj;
+ int rc = 0;
+
+ rc = dt_root_get(env, dev, &root_fid);
+ if (rc < 0)
+ GOTO(out, nm_obj = ERR_PTR(rc));
+
+ root_obj = dt_locate(env, dev, &root_fid);
+ if (unlikely(IS_ERR(root_obj)))
+ GOTO(out, nm_obj = root_obj);
+
+again:
+ /* if loading index fails the first time, try again with force_create */
+ if (force_create) {
+ CDEBUG(D_INFO, "removing old index, creating new one\n");
+ rc = local_object_unlink(env, dev, root_obj,
+ LUSTRE_NODEMAP_NAME);
+ if (rc < 0) {
+ /* XXX not sure the best way to get obd name. */
+ CERROR("cannot destroy nodemap index: rc = %d\n",
+ rc);
+ GOTO(out_root, nm_obj = ERR_PTR(rc));
+ }
+ }
+
+ nm_obj = local_index_find_or_create(env, los, root_obj,
+ LUSTRE_NODEMAP_NAME,
+ S_IFREG | S_IRUGO | S_IWUSR,
+ &dt_nodemap_features);
+ if (IS_ERR(nm_obj))
+ GOTO(out_root, nm_obj);
+
+ if (nm_obj->do_index_ops == NULL) {
+ rc = nm_obj->do_ops->do_index_try(env, nm_obj,
+ &dt_nodemap_features);
+ /* even if loading from tgt fails, connecting to MGS will
+ * rewrite the config
+ */
+ if (rc < 0 && !force_create) {
+ CERROR("cannot load nodemap index from disk, creating "
+ "new index: rc = %d\n", rc);
+ lu_object_put(env, &nm_obj->do_lu);
+ force_create = true;
+ goto again;
+ }
+ }
+
+ if (rc < 0)
+ nm_obj = ERR_PTR(rc);
+
+out_root:
+ lu_object_put(env, &root_obj->do_lu);
+out:
+ return nm_obj;
+}
+
static int nodemap_idx_insert(const struct lu_env *env,
struct dt_object *idx,
const struct nodemap_key *nk,
GOTO(out, rc = PTR_ERR(it));
rc = iops->load(env, it, hash);
+ if (rc < 0)
+ GOTO(out_iops_fini, rc);
+
+ /* rc == 0 means we need to advance to record */
if (rc == 0) {
rc = iops->next(env, it);
- if (rc != 0)
- GOTO(out_iops, rc = 0);
+
+ if (rc < 0)
+ GOTO(out_iops_put, rc);
+ /* rc > 0 is eof, will be checked in while below */
+ } else {
+ /* rc == 1, we found initial record and can process below */
+ rc = 0;
}
new_config = nodemap_config_alloc();
if (IS_ERR(new_config)) {
rc = PTR_ERR(new_config);
new_config = NULL;
- GOTO(out_lock, rc);
+ GOTO(out_iops_put, rc);
}
- do {
+ /* rc > 0 is eof, check initial iops->next here as well */
+ while (rc == 0) {
struct nodemap_key *key;
union nodemap_rec rec;
rc = iops->rec(env, it, (struct dt_rec *)&rec, 0);
if (rc != -ESTALE) {
if (rc != 0)
- GOTO(out_lock, rc);
+ GOTO(out_nodemap_config, rc);
rc = nodemap_process_keyrec(new_config, key, &rec,
&recent_nodemap);
if (rc < 0)
- GOTO(out_lock, rc);
+ GOTO(out_nodemap_config, rc);
if (rc == NODEMAP_GLOBAL_IDX)
loaded_global_idx = true;
}
do
rc = iops->next(env, it);
while (rc == -ESTALE);
- } while (rc == 0);
+ }
if (rc > 0)
rc = 0;
-out_lock:
+out_nodemap_config:
if (rc != 0)
nodemap_config_dealloc(new_config);
else
/* creating new default needs to be done outside dt read lock */
activate_nodemap = true;
-out_iops:
+out_iops_put:
iops->put(env, it);
+out_iops_fini:
iops->fini(env, it);
out:
dt_read_unlock(env, nodemap_idx);
RETURN(rc);
}
+/**
+ * Step through active config and write to disk.
+ */
+int nodemap_save_config_cache(const struct lu_env *env,
+ struct nm_config_file *ncf)
+{
+ struct dt_device *dev;
+ struct dt_object *o;
+ struct lu_nodemap *nodemap;
+ struct lu_nodemap *nm_tmp;
+ struct lu_nid_range *range;
+ struct lu_nid_range *range_temp;
+ struct lu_idmap *idmap;
+ struct lu_idmap *id_tmp;
+ struct rb_root root;
+ struct nodemap_key nk;
+ union nodemap_rec nr;
+ LIST_HEAD(nodemap_list_head);
+ int rc = 0, rc2;
+
+ ENTRY;
+
+ if (ncf->ncf_los == NULL || ncf->ncf_obj == NULL)
+ RETURN(-EIO);
+
+ dev = lu2dt_dev(ncf->ncf_obj->do_lu.lo_dev);
+
+ /* nodemap_cache_find_create will delete old conf file, so put here */
+ lu_object_put_nocache(env, &ncf->ncf_obj->do_lu);
+ ncf->ncf_obj = NULL;
+
+ /* force create a new index file to fill with active config */
+ o = nodemap_cache_find_create(env, dev, ncf->ncf_los, true);
+ if (IS_ERR(o))
+ GOTO(out, rc = PTR_ERR(o));
+
+ ncf->ncf_obj = o;
+
+ mutex_lock(&active_config_lock);
+
+ /* convert hash to list so we don't spin */
+ cfs_hash_for_each_safe(active_config->nmc_nodemap_hash,
+ nm_hash_list_cb, &nodemap_list_head);
+
+ list_for_each_entry_safe(nodemap, nm_tmp, &nodemap_list_head, nm_list) {
+ nodemap_cluster_key_init(&nk, nodemap->nm_id);
+ nodemap_cluster_rec_init(&nr, nodemap);
+
+ rc2 = nodemap_idx_insert(env, o, &nk, &nr);
+ if (rc2 < 0) {
+ rc = rc2;
+ continue;
+ }
+
+ down_read(&active_config->nmc_range_tree_lock);
+ list_for_each_entry_safe(range, range_temp, &nodemap->nm_ranges,
+ rn_list) {
+ lnet_nid_t nid[2] = {
+ range->rn_node.in_extent.start,
+ range->rn_node.in_extent.end
+ };
+ nodemap_range_key_init(&nk, nodemap->nm_id,
+ range->rn_id);
+ nodemap_range_rec_init(&nr, nid);
+ rc2 = nodemap_idx_insert(env, o, &nk, &nr);
+ if (rc2 < 0)
+ rc = rc2;
+ }
+ up_read(&active_config->nmc_range_tree_lock);
+
+ /* we don't need to take nm_idmap_lock because active config
+ * lock prevents changes from happening to nodemaps
+ */
+ root = nodemap->nm_client_to_fs_uidmap;
+ nm_rbtree_postorder_for_each_entry_safe(idmap, id_tmp, &root,
+ id_client_to_fs) {
+ nodemap_idmap_key_init(&nk, nodemap->nm_id, NODEMAP_UID,
+ idmap->id_client);
+ nodemap_idmap_rec_init(&nr, idmap->id_fs);
+ rc2 = nodemap_idx_insert(env, o, &nk, &nr);
+ if (rc2 < 0)
+ rc = rc2;
+ }
+
+ root = nodemap->nm_client_to_fs_gidmap;
+ nm_rbtree_postorder_for_each_entry_safe(idmap, id_tmp, &root,
+ id_client_to_fs) {
+ nodemap_idmap_key_init(&nk, nodemap->nm_id, NODEMAP_GID,
+ idmap->id_client);
+ nodemap_idmap_rec_init(&nr, idmap->id_fs);
+ rc2 = nodemap_idx_insert(env, o, &nk, &nr);
+ if (rc2 < 0)
+ rc = rc2;
+ }
+ }
+ nodemap_global_key_init(&nk);
+ nodemap_global_rec_init(&nr, active_config->nmc_nodemap_is_active);
+ rc2 = nodemap_idx_insert(env, o, &nk, &nr);
+ if (rc2 < 0)
+ rc = rc2;
+
+out:
+ mutex_unlock(&active_config_lock);
+ RETURN(rc);
+}
+
+static void nodemap_save_all_caches(void)
+{
+ struct nm_config_file *ncf;
+ struct lu_env env;
+ int rc = 0;
+
+ /* recreating nodemap cache requires fld_thread_key be in env */
+ rc = lu_env_init(&env, LCT_MD_THREAD | LCT_DT_THREAD | LCT_MG_THREAD);
+ if (rc != 0) {
+ CWARN("cannot init env for nodemap config: rc = %d\n", rc);
+ return;
+ }
+
+ mutex_lock(&ncf_list_lock);
+ list_for_each_entry(ncf, &ncf_list_head, ncf_list) {
+ rc = nodemap_save_config_cache(&env, ncf);
+ if (rc < 0 && ncf->ncf_obj != NULL)
+ CWARN("%s: error writing to nodemap config: rc = %d\n",
+ ncf->ncf_obj->do_lu.lo_dev->ld_obd->obd_name, rc);
+ }
+ mutex_unlock(&ncf_list_lock);
+
+ lu_env_fini(&env);
+}
+
/* tracks if config still needs to be loaded, either from disk or network */
static bool nodemap_config_loaded;
static DEFINE_MUTEX(nodemap_config_loaded_lock);
mutex_lock(&nodemap_config_loaded_lock);
nodemap_config_set_active(config);
nodemap_config_loaded = true;
+ nodemap_save_all_caches();
mutex_unlock(&nodemap_config_loaded_lock);
}
EXPORT_SYMBOL(nodemap_config_set_active_mgc);
enum nm_config_file_type ncf_type)
{
struct nm_config_file *ncf;
+ bool save_config = false;
int rc = 0;
ENTRY;
mutex_lock(&nodemap_config_loaded_lock);
if (ncf_type == NCFT_MGS || !nodemap_config_loaded)
rc = nodemap_load_entries(env, obj);
+ else
+ save_config = true;
nodemap_config_loaded = true;
mutex_unlock(&nodemap_config_loaded_lock);
+ /* sync on disk caches with loaded config in memory */
+ if (save_config)
+ rc = nodemap_save_config_cache(env, ncf);
+
if (rc < 0) {
if (ncf_type == NCFT_MGS) {
nodemap_mgs_ncf = NULL;
if (rdpg.rp_pages == NULL)
RETURN(-ENOMEM);
for (i = 0; i < rdpg.rp_npages; i++) {
- rdpg.rp_pages[i] = alloc_page(GFP_IOFS);
+ rdpg.rp_pages[i] = alloc_page(GFP_NOFS);
if (rdpg.rp_pages[i] == NULL)
GOTO(out, rc = -ENOMEM);
}
return rc;
}
EXPORT_SYMBOL(nodemap_get_config_req);
+
+int nodemap_fs_init(const struct lu_env *env, struct dt_device *dev,
+ struct obd_device *obd, struct local_oid_storage *los)
+{
+ struct dt_object *config_obj;
+ struct nm_config_file *nm_config_file;
+ int rc = 0;
+ ENTRY;
+
+ CDEBUG(D_INFO, "%s: finding nodemap index\n", obd->obd_name);
+ /* load or create the index file from disk (don't force create) */
+ config_obj = nodemap_cache_find_create(env, dev, los, false);
+ if (IS_ERR(config_obj))
+ GOTO(out, rc = PTR_ERR(config_obj));
+
+ CDEBUG(D_INFO, "%s: registering nodemap index\n", obd->obd_name);
+
+ nm_config_file = nm_config_file_register(env, config_obj, los,
+ NCFT_TGT);
+ if (IS_ERR(nm_config_file)) {
+ CERROR("%s: error loading nodemap config file, file must be "
+ "removed via ldiskfs: rc = %ld\n",
+ obd->obd_name, PTR_ERR(nm_config_file));
+ GOTO(out, rc = PTR_ERR(nm_config_file));
+ }
+
+ obd->u.obt.obt_nodemap_config_file = nm_config_file;
+
+ /* save los in case object needs to be re-created */
+ nm_config_file->ncf_los = los;
+
+ EXIT;
+
+out:
+ return rc;
+}
+EXPORT_SYMBOL(nodemap_fs_init);
+
+void nodemap_fs_fini(const struct lu_env *env, struct obd_device *obd)
+{
+ if (obd->u.obt.obt_nodemap_config_file == NULL)
+ return;
+
+ nm_config_file_deregister(env, obd->u.obt.obt_nodemap_config_file,
+ NCFT_TGT);
+ obd->u.obt.obt_nodemap_config_file = NULL;
+}
+EXPORT_SYMBOL(nodemap_fs_fini);
git://git.whamcloud.com / fs / lustre-release.git / blobdiff