4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.gnu.org/licenses/gpl-2.0.html
23 * Copyright (C) 2015, Trustees of Indiana University
25 * Copyright (c) 2014, Intel Corporation.
27 * Author: Joshua Walgenbach <jjw@iu.edu>
28 * Author: Kit Westneat <cwestnea@iu.edu>
30 * Implements the storage functionality for the nodemap configuration. Functions
31 * in this file prepare, store, and load nodemap configuration data. Targets
32 * using nodemap services should register a configuration file object. Nodemap
33 * configuration changes that need to persist should call the appropriate
34 * storage function for the data being modified.
36 * There are several index types as defined in enum nodemap_idx_type:
37 * NODEMAP_CLUSTER_IDX stores the data found on the lu_nodemap struct,
38 * like root squash and config flags, as well as
40 * NODEMAP_RANGE_IDX stores NID range information for a nodemap
41 * NODEMAP_UIDMAP_IDX stores a fs/client UID mapping pair
42 * NODEMAP_GIDMAP_IDX stores a fs/client GID mapping pair
43 * NODEMAP_GLOBAL_IDX stores whether or not nodemaps are active
46 #include <libcfs/libcfs.h>
47 #include <linux/err.h>
48 #include <linux/kernel.h>
49 #include <linux/list.h>
50 #include <linux/mutex.h>
51 #include <linux/string.h>
52 #include <linux/types.h>
53 #include <lnet/types.h>
54 #include <lustre/lustre_idl.h>
55 #include <dt_object.h>
56 #include <lu_object.h>
57 #include <lustre_net.h>
58 #include <lustre_nodemap.h>
59 #include <obd_class.h>
60 #include <obd_support.h>
61 #include "nodemap_internal.h"
63 /* list of registered nodemap index files, except MGS */
64 static LIST_HEAD(ncf_list_head);
65 static DEFINE_MUTEX(ncf_list_lock);
67 /* MGS index is different than others, others are listeners to MGS idx */
68 static struct nm_config_file *nodemap_mgs_ncf;
70 /* lu_nodemap flags */
72 NM_FL_ALLOW_ROOT_ACCESS = 0x1,
73 NM_FL_TRUST_CLIENT_IDS = 0x2,
74 NM_FL_DENY_UNKNOWN = 0x4,
77 static void nodemap_cluster_key_init(struct nodemap_key *nk, unsigned int nm_id)
79 nk->nk_nodemap_id = cpu_to_le32(nm_idx_set_type(nm_id,
80 NODEMAP_CLUSTER_IDX));
84 static void nodemap_cluster_rec_init(union nodemap_rec *nr,
85 const struct lu_nodemap *nodemap)
87 CLASSERT(sizeof(nr->ncr.ncr_name) == sizeof(nodemap->nm_name));
89 strncpy(nr->ncr.ncr_name, nodemap->nm_name, sizeof(nodemap->nm_name));
90 nr->ncr.ncr_squash_uid = cpu_to_le32(nodemap->nm_squash_uid);
91 nr->ncr.ncr_squash_gid = cpu_to_le32(nodemap->nm_squash_gid);
92 nr->ncr.ncr_flags = cpu_to_le32(
93 (nodemap->nmf_trust_client_ids ?
94 NM_FL_TRUST_CLIENT_IDS : 0) |
95 (nodemap->nmf_allow_root_access ?
96 NM_FL_ALLOW_ROOT_ACCESS : 0) |
97 (nodemap->nmf_deny_unknown ?
98 NM_FL_DENY_UNKNOWN : 0));
101 static void nodemap_idmap_key_init(struct nodemap_key *nk, unsigned int nm_id,
102 enum nodemap_id_type id_type,
105 enum nodemap_idx_type idx_type;
107 if (id_type == NODEMAP_UID)
108 idx_type = NODEMAP_UIDMAP_IDX;
110 idx_type = NODEMAP_GIDMAP_IDX;
112 nk->nk_nodemap_id = cpu_to_le32(nm_idx_set_type(nm_id, idx_type));
113 nk->nk_id_client = cpu_to_le32(id_client);
116 static void nodemap_idmap_rec_init(union nodemap_rec *nr, u32 id_fs)
118 nr->nir.nir_id_fs = cpu_to_le32(id_fs);
121 static void nodemap_range_key_init(struct nodemap_key *nk, unsigned int nm_id,
124 nk->nk_nodemap_id = cpu_to_le32(nm_idx_set_type(nm_id,
126 nk->nk_range_id = cpu_to_le32(rn_id);
129 static void nodemap_range_rec_init(union nodemap_rec *nr,
130 const lnet_nid_t nid[2])
132 nr->nrr.nrr_start_nid = cpu_to_le64(nid[0]);
133 nr->nrr.nrr_end_nid = cpu_to_le64(nid[1]);
136 static void nodemap_global_key_init(struct nodemap_key *nk)
138 nk->nk_nodemap_id = cpu_to_le32(nm_idx_set_type(0, NODEMAP_GLOBAL_IDX));
142 static void nodemap_global_rec_init(union nodemap_rec *nr, bool active)
144 nr->ngr.ngr_is_active = active;
147 /* should be called with dt_write lock */
148 static void nodemap_inc_version(const struct lu_env *env,
149 struct dt_object *nodemap_idx,
152 u64 ver = dt_version_get(env, nodemap_idx);
153 dt_version_set(env, nodemap_idx, ver + 1, th);
156 enum ncfc_find_create {
160 static struct dt_object *nodemap_cache_find_create(const struct lu_env *env,
161 struct dt_device *dev,
162 struct local_oid_storage *los,
163 enum ncfc_find_create create_new)
165 struct lu_fid root_fid;
166 struct dt_object *root_obj;
167 struct dt_object *nm_obj;
170 rc = dt_root_get(env, dev, &root_fid);
172 GOTO(out, nm_obj = ERR_PTR(rc));
174 root_obj = dt_locate(env, dev, &root_fid);
175 if (unlikely(IS_ERR(root_obj)))
176 GOTO(out, nm_obj = root_obj);
179 /* if loading index fails the first time, create new index */
180 if (create_new == NCFC_CREATE_NEW) {
181 CDEBUG(D_INFO, "removing old index, creating new one\n");
182 rc = local_object_unlink(env, dev, root_obj,
183 LUSTRE_NODEMAP_NAME);
185 /* XXX not sure the best way to get obd name. */
186 CERROR("cannot destroy nodemap index: rc = %d\n",
188 GOTO(out_root, nm_obj = ERR_PTR(rc));
192 nm_obj = local_index_find_or_create(env, los, root_obj,
194 S_IFREG | S_IRUGO | S_IWUSR,
195 &dt_nodemap_features);
197 GOTO(out_root, nm_obj);
199 if (nm_obj->do_index_ops == NULL) {
200 rc = nm_obj->do_ops->do_index_try(env, nm_obj,
201 &dt_nodemap_features);
202 /* even if loading from tgt fails, connecting to MGS will
206 lu_object_put(env, &nm_obj->do_lu);
208 if (create_new == NCFC_CREATE_NEW)
209 GOTO(out_root, nm_obj = ERR_PTR(rc));
211 CERROR("cannot load nodemap index from disk, creating "
212 "new index: rc = %d\n", rc);
213 create_new = NCFC_CREATE_NEW;
219 lu_object_put(env, &root_obj->do_lu);
224 static int nodemap_idx_insert(const struct lu_env *env,
225 struct dt_object *idx,
226 const struct nodemap_key *nk,
227 const union nodemap_rec *nr)
230 struct dt_device *dev = lu2dt_dev(idx->do_lu.lo_dev);
233 CLASSERT(sizeof(union nodemap_rec) == 32);
235 th = dt_trans_create(env, dev);
238 GOTO(out, rc = PTR_ERR(th));
240 rc = dt_declare_insert(env, idx,
241 (const struct dt_rec *)nr,
242 (const struct dt_key *)nk, th);
246 rc = dt_declare_version_set(env, idx, th);
250 rc = dt_trans_start_local(env, dev, th);
254 dt_write_lock(env, idx, 0);
256 rc = dt_insert(env, idx, (const struct dt_rec *)nr,
257 (const struct dt_key *)nk, th, 1);
259 nodemap_inc_version(env, idx, th);
260 dt_write_unlock(env, idx);
262 dt_trans_stop(env, dev, th);
267 static int nodemap_idx_update(const struct lu_env *env,
268 struct dt_object *idx,
269 const struct nodemap_key *nk,
270 const union nodemap_rec *nr)
273 struct dt_device *dev = lu2dt_dev(idx->do_lu.lo_dev);
276 th = dt_trans_create(env, dev);
279 GOTO(out, rc = PTR_ERR(th));
281 rc = dt_declare_delete(env, idx, (const struct dt_key *)nk, th);
285 rc = dt_declare_insert(env, idx, (const struct dt_rec *)nr,
286 (const struct dt_key *)nk, th);
290 rc = dt_declare_version_set(env, idx, th);
294 rc = dt_trans_start_local(env, dev, th);
298 dt_write_lock(env, idx, 0);
300 rc = dt_delete(env, idx, (const struct dt_key *)nk, th);
304 rc = dt_insert(env, idx, (const struct dt_rec *)nr,
305 (const struct dt_key *)nk, th, 1);
309 nodemap_inc_version(env, idx, th);
311 dt_write_unlock(env, idx);
313 dt_trans_stop(env, dev, th);
318 static int nodemap_idx_delete(const struct lu_env *env,
319 struct dt_object *idx,
320 const struct nodemap_key *nk,
321 const union nodemap_rec *unused)
324 struct dt_device *dev = lu2dt_dev(idx->do_lu.lo_dev);
327 th = dt_trans_create(env, dev);
330 GOTO(out, rc = PTR_ERR(th));
332 rc = dt_declare_delete(env, idx, (const struct dt_key *)nk, th);
336 rc = dt_declare_version_set(env, idx, th);
340 rc = dt_trans_start_local(env, dev, th);
344 dt_write_lock(env, idx, 0);
346 rc = dt_delete(env, idx, (const struct dt_key *)nk, th);
348 nodemap_inc_version(env, idx, th);
350 dt_write_unlock(env, idx);
352 dt_trans_stop(env, dev, th);
362 static int nodemap_idx_nodemap_add_update(const struct lu_nodemap *nodemap,
363 struct dt_object *idx,
364 enum nm_add_update update)
366 struct nodemap_key nk;
367 union nodemap_rec nr;
373 rc = lu_env_init(&env, LCT_LOCAL);
377 nodemap_cluster_key_init(&nk, nodemap->nm_id);
378 nodemap_cluster_rec_init(&nr, nodemap);
380 if (update == NM_UPDATE)
381 rc = nodemap_idx_update(&env, idx, &nk, &nr);
383 rc = nodemap_idx_insert(&env, idx, &nk, &nr);
390 int nodemap_idx_nodemap_add(const struct lu_nodemap *nodemap)
392 if (nodemap_mgs_ncf == NULL) {
393 CERROR("cannot add nodemap config to non-existing MGS.\n");
397 return nodemap_idx_nodemap_add_update(nodemap, nodemap_mgs_ncf->ncf_obj,
401 int nodemap_idx_nodemap_update(const struct lu_nodemap *nodemap)
403 if (nodemap_mgs_ncf == NULL) {
404 CERROR("cannot add nodemap config to non-existing MGS.\n");
408 return nodemap_idx_nodemap_add_update(nodemap, nodemap_mgs_ncf->ncf_obj,
412 int nodemap_idx_nodemap_del(const struct lu_nodemap *nodemap)
415 struct lu_idmap *idmap;
416 struct lu_idmap *temp;
417 struct lu_nid_range *range;
418 struct lu_nid_range *range_temp;
419 struct nodemap_key nk;
426 if (nodemap_mgs_ncf == NULL) {
427 CERROR("cannot add nodemap config to non-existing MGS.\n");
431 rc = lu_env_init(&env, LCT_LOCAL);
435 root = nodemap->nm_fs_to_client_uidmap;
436 nm_rbtree_postorder_for_each_entry_safe(idmap, temp, &root,
438 nodemap_idmap_key_init(&nk, nodemap->nm_id, NODEMAP_UID,
440 rc2 = nodemap_idx_delete(&env, nodemap_mgs_ncf->ncf_obj,
446 root = nodemap->nm_client_to_fs_gidmap;
447 nm_rbtree_postorder_for_each_entry_safe(idmap, temp, &root,
449 nodemap_idmap_key_init(&nk, nodemap->nm_id, NODEMAP_GID,
451 rc2 = nodemap_idx_delete(&env, nodemap_mgs_ncf->ncf_obj,
457 list_for_each_entry_safe(range, range_temp, &nodemap->nm_ranges,
459 nodemap_range_key_init(&nk, nodemap->nm_id, range->rn_id);
460 rc2 = nodemap_idx_delete(&env, nodemap_mgs_ncf->ncf_obj,
466 nodemap_cluster_key_init(&nk, nodemap->nm_id);
467 rc2 = nodemap_idx_delete(&env, nodemap_mgs_ncf->ncf_obj, &nk, NULL);
476 int nodemap_idx_range_add(const struct lu_nid_range *range,
477 const lnet_nid_t nid[2])
479 struct nodemap_key nk;
480 union nodemap_rec nr;
485 if (nodemap_mgs_ncf == NULL) {
486 CERROR("cannot add nodemap config to non-existing MGS.\n");
490 rc = lu_env_init(&env, LCT_LOCAL);
494 nodemap_range_key_init(&nk, range->rn_nodemap->nm_id, range->rn_id);
495 nodemap_range_rec_init(&nr, nid);
497 rc = nodemap_idx_insert(&env, nodemap_mgs_ncf->ncf_obj, &nk, &nr);
503 int nodemap_idx_range_del(const struct lu_nid_range *range)
505 struct nodemap_key nk;
510 if (nodemap_mgs_ncf == NULL) {
511 CERROR("cannot add nodemap config to non-existing MGS.\n");
515 rc = lu_env_init(&env, LCT_LOCAL);
519 nodemap_range_key_init(&nk, range->rn_nodemap->nm_id, range->rn_id);
521 rc = nodemap_idx_delete(&env, nodemap_mgs_ncf->ncf_obj, &nk, NULL);
527 int nodemap_idx_idmap_add(const struct lu_nodemap *nodemap,
528 enum nodemap_id_type id_type,
531 struct nodemap_key nk;
532 union nodemap_rec nr;
537 if (nodemap_mgs_ncf == NULL) {
538 CERROR("cannot add nodemap config to non-existing MGS.\n");
542 rc = lu_env_init(&env, LCT_LOCAL);
546 nodemap_idmap_key_init(&nk, nodemap->nm_id, id_type, map[0]);
547 nodemap_idmap_rec_init(&nr, map[1]);
549 rc = nodemap_idx_insert(&env, nodemap_mgs_ncf->ncf_obj, &nk, &nr);
555 int nodemap_idx_idmap_del(const struct lu_nodemap *nodemap,
556 enum nodemap_id_type id_type,
559 struct nodemap_key nk;
564 if (nodemap_mgs_ncf == NULL) {
565 CERROR("cannot add nodemap config to non-existing MGS.\n");
569 rc = lu_env_init(&env, LCT_LOCAL);
573 nodemap_idmap_key_init(&nk, nodemap->nm_id, id_type, map[0]);
575 rc = nodemap_idx_delete(&env, nodemap_mgs_ncf->ncf_obj, &nk, NULL);
581 static int nodemap_idx_global_add_update(bool value, enum nm_add_update update)
583 struct nodemap_key nk;
584 union nodemap_rec nr;
589 if (nodemap_mgs_ncf == NULL) {
590 CERROR("cannot add nodemap config to non-existing MGS.\n");
594 rc = lu_env_init(&env, LCT_LOCAL);
598 nodemap_global_key_init(&nk);
599 nodemap_global_rec_init(&nr, value);
601 if (update == NM_UPDATE)
602 rc = nodemap_idx_update(&env, nodemap_mgs_ncf->ncf_obj,
605 rc = nodemap_idx_insert(&env, nodemap_mgs_ncf->ncf_obj,
613 int nodemap_idx_nodemap_activate(bool value)
615 return nodemap_idx_global_add_update(value, NM_UPDATE);
619 * Process a key/rec pair and modify the new configuration.
621 * \param config configuration to update with this key/rec data
622 * \param key key of the record that was loaded
623 * \param rec record that was loaded
624 * \param recent_nodemap last referenced nodemap
625 * \retval type of record processed, see enum #nodemap_idx_type
626 * \retval -ENOENT range or map loaded before nodemap record
627 * \retval -EINVAL duplicate nodemap cluster records found with
628 * different IDs, or nodemap has invalid name
631 static int nodemap_process_keyrec(struct nodemap_config *config,
632 const struct nodemap_key *key,
633 const union nodemap_rec *rec,
634 struct lu_nodemap **recent_nodemap)
636 struct lu_nodemap *nodemap = NULL;
637 enum nodemap_idx_type type;
638 enum nodemap_id_type id_type;
645 CLASSERT(sizeof(union nodemap_rec) == 32);
647 nodemap_id = le32_to_cpu(key->nk_nodemap_id);
648 type = nm_idx_get_type(nodemap_id);
649 nodemap_id = nm_idx_set_type(nodemap_id, 0);
651 CDEBUG(D_INFO, "found config entry, nm_id %d type %d\n",
654 /* find the correct nodemap in the load list */
655 if (type == NODEMAP_RANGE_IDX || type == NODEMAP_UIDMAP_IDX ||
656 type == NODEMAP_GIDMAP_IDX) {
657 struct lu_nodemap *tmp = NULL;
659 nodemap = *recent_nodemap;
662 GOTO(out, rc = -ENOENT);
664 if (nodemap->nm_id != nodemap_id) {
665 list_for_each_entry(tmp, &nodemap->nm_list, nm_list)
666 if (tmp->nm_id == nodemap_id) {
671 if (nodemap->nm_id != nodemap_id)
672 GOTO(out, rc = -ENOENT);
675 /* update most recently used nodemap if necessay */
676 if (nodemap != *recent_nodemap)
677 *recent_nodemap = nodemap;
681 case NODEMAP_EMPTY_IDX:
683 CWARN("Found nodemap config record without type field, "
684 " nodemap_id=%d. nodemap config file corrupt?\n",
687 case NODEMAP_CLUSTER_IDX:
688 nodemap = cfs_hash_lookup(config->nmc_nodemap_hash,
690 if (nodemap == NULL) {
691 if (nodemap_id == LUSTRE_NODEMAP_DEFAULT_ID) {
692 nodemap = nodemap_create(rec->ncr.ncr_name,
694 config->nmc_default_nodemap = nodemap;
696 nodemap = nodemap_create(rec->ncr.ncr_name,
700 GOTO(out, rc = PTR_ERR(nodemap));
702 /* we need to override the local ID with the saved ID */
703 nodemap->nm_id = nodemap_id;
704 if (nodemap_id > config->nmc_nodemap_highest_id)
705 config->nmc_nodemap_highest_id = nodemap_id;
707 } else if (nodemap->nm_id != nodemap_id) {
708 nodemap_putref(nodemap);
709 GOTO(out, rc = -EINVAL);
712 nodemap->nm_squash_uid =
713 le32_to_cpu(rec->ncr.ncr_squash_uid);
714 nodemap->nm_squash_gid =
715 le32_to_cpu(rec->ncr.ncr_squash_gid);
717 flags = le32_to_cpu(rec->ncr.ncr_flags);
718 nodemap->nmf_allow_root_access =
719 flags & NM_FL_ALLOW_ROOT_ACCESS;
720 nodemap->nmf_trust_client_ids =
721 flags & NM_FL_TRUST_CLIENT_IDS;
722 nodemap->nmf_deny_unknown =
723 flags & NM_FL_DENY_UNKNOWN;
725 if (*recent_nodemap == NULL) {
726 *recent_nodemap = nodemap;
727 INIT_LIST_HEAD(&nodemap->nm_list);
729 list_add(&nodemap->nm_list,
730 &(*recent_nodemap)->nm_list);
732 nodemap_putref(nodemap);
734 case NODEMAP_RANGE_IDX:
735 nid[0] = le64_to_cpu(rec->nrr.nrr_start_nid);
736 nid[1] = le64_to_cpu(rec->nrr.nrr_end_nid);
738 rc = nodemap_add_range_helper(config, nodemap, nid,
739 le32_to_cpu(key->nk_range_id));
743 case NODEMAP_UIDMAP_IDX:
744 case NODEMAP_GIDMAP_IDX:
745 map[0] = le32_to_cpu(key->nk_id_client);
746 map[1] = le32_to_cpu(rec->nir.nir_id_fs);
748 if (type == NODEMAP_UIDMAP_IDX)
749 id_type = NODEMAP_UID;
751 id_type = NODEMAP_GID;
753 rc = nodemap_add_idmap_helper(nodemap, id_type, map);
757 case NODEMAP_GLOBAL_IDX:
758 config->nmc_nodemap_is_active = rec->ngr.ngr_is_active;
761 CERROR("got keyrec pair for unknown type %d\n", type);
771 static int nodemap_load_entries(const struct lu_env *env,
772 struct dt_object *nodemap_idx)
774 const struct dt_it_ops *iops;
776 struct lu_nodemap *recent_nodemap = NULL;
777 struct nodemap_config *new_config = NULL;
779 bool activate_nodemap = false;
780 bool loaded_global_idx = false;
785 iops = &nodemap_idx->do_index_ops->dio_it;
787 dt_read_lock(env, nodemap_idx, 0);
788 it = iops->init(env, nodemap_idx, 0);
790 GOTO(out, rc = PTR_ERR(it));
792 rc = iops->load(env, it, hash);
794 GOTO(out_iops_fini, rc);
796 /* rc == 0 means we need to advance to record */
798 rc = iops->next(env, it);
801 GOTO(out_iops_put, rc);
802 /* rc > 0 is eof, will be checked in while below */
804 /* rc == 1, we found initial record and can process below */
808 new_config = nodemap_config_alloc();
809 if (IS_ERR(new_config)) {
810 rc = PTR_ERR(new_config);
812 GOTO(out_iops_put, rc);
815 /* rc > 0 is eof, check initial iops->next here as well */
817 struct nodemap_key *key;
818 union nodemap_rec rec;
820 key = (struct nodemap_key *)iops->key(env, it);
821 rc = iops->rec(env, it, (struct dt_rec *)&rec, 0);
824 GOTO(out_nodemap_config, rc);
825 rc = nodemap_process_keyrec(new_config, key, &rec,
828 GOTO(out_nodemap_config, rc);
829 if (rc == NODEMAP_GLOBAL_IDX)
830 loaded_global_idx = true;
834 rc = iops->next(env, it);
835 while (rc == -ESTALE);
843 nodemap_config_dealloc(new_config);
845 /* creating new default needs to be done outside dt read lock */
846 activate_nodemap = true;
852 dt_read_unlock(env, nodemap_idx);
855 CWARN("%s: failed to load nodemap configuration: rc = %d\n",
856 nodemap_idx->do_lu.lo_dev->ld_obd->obd_name, rc);
858 if (!activate_nodemap)
861 if (new_config->nmc_default_nodemap == NULL) {
862 /* new MGS won't have a default nm on disk, so create it here */
863 new_config->nmc_default_nodemap =
864 nodemap_create(DEFAULT_NODEMAP, new_config, 1);
865 if (IS_ERR(new_config->nmc_default_nodemap)) {
866 rc = PTR_ERR(new_config->nmc_default_nodemap);
868 rc = nodemap_idx_nodemap_add_update(
869 new_config->nmc_default_nodemap,
872 nodemap_putref(new_config->nmc_default_nodemap);
876 /* new nodemap config won't have an active/inactive record */
877 if (rc == 0 && loaded_global_idx == false) {
878 struct nodemap_key nk;
879 union nodemap_rec nr;
881 nodemap_global_key_init(&nk);
882 nodemap_global_rec_init(&nr, false);
883 rc = nodemap_idx_insert(env, nodemap_idx, &nk, &nr);
887 nodemap_config_set_active(new_config);
889 nodemap_config_dealloc(new_config);
895 * Step through active config and write to disk.
897 struct dt_object *nodemap_save_config_cache(const struct lu_env *env,
898 struct dt_device *dev,
899 struct local_oid_storage *los)
902 struct lu_nodemap *nodemap;
903 struct lu_nodemap *nm_tmp;
904 struct lu_nid_range *range;
905 struct lu_nid_range *range_temp;
906 struct lu_idmap *idmap;
907 struct lu_idmap *id_tmp;
909 struct nodemap_key nk;
910 union nodemap_rec nr;
911 LIST_HEAD(nodemap_list_head);
916 /* create a new index file to fill with active config */
917 o = nodemap_cache_find_create(env, dev, los, NCFC_CREATE_NEW);
921 mutex_lock(&active_config_lock);
923 /* convert hash to list so we don't spin */
924 cfs_hash_for_each_safe(active_config->nmc_nodemap_hash,
925 nm_hash_list_cb, &nodemap_list_head);
927 list_for_each_entry_safe(nodemap, nm_tmp, &nodemap_list_head, nm_list) {
928 nodemap_cluster_key_init(&nk, nodemap->nm_id);
929 nodemap_cluster_rec_init(&nr, nodemap);
931 rc2 = nodemap_idx_insert(env, o, &nk, &nr);
937 down_read(&active_config->nmc_range_tree_lock);
938 list_for_each_entry_safe(range, range_temp, &nodemap->nm_ranges,
940 lnet_nid_t nid[2] = {
941 range->rn_node.in_extent.start,
942 range->rn_node.in_extent.end
944 nodemap_range_key_init(&nk, nodemap->nm_id,
946 nodemap_range_rec_init(&nr, nid);
947 rc2 = nodemap_idx_insert(env, o, &nk, &nr);
951 up_read(&active_config->nmc_range_tree_lock);
953 /* we don't need to take nm_idmap_lock because active config
954 * lock prevents changes from happening to nodemaps
956 root = nodemap->nm_client_to_fs_uidmap;
957 nm_rbtree_postorder_for_each_entry_safe(idmap, id_tmp, &root,
959 nodemap_idmap_key_init(&nk, nodemap->nm_id, NODEMAP_UID,
961 nodemap_idmap_rec_init(&nr, idmap->id_fs);
962 rc2 = nodemap_idx_insert(env, o, &nk, &nr);
967 root = nodemap->nm_client_to_fs_gidmap;
968 nm_rbtree_postorder_for_each_entry_safe(idmap, id_tmp, &root,
970 nodemap_idmap_key_init(&nk, nodemap->nm_id, NODEMAP_GID,
972 nodemap_idmap_rec_init(&nr, idmap->id_fs);
973 rc2 = nodemap_idx_insert(env, o, &nk, &nr);
978 nodemap_global_key_init(&nk);
979 nodemap_global_rec_init(&nr, active_config->nmc_nodemap_is_active);
980 rc2 = nodemap_idx_insert(env, o, &nk, &nr);
985 mutex_unlock(&active_config_lock);
988 lu_object_put(env, &o->do_lu);
995 static void nodemap_save_all_caches(void)
997 struct nm_config_file *ncf;
1001 /* recreating nodemap cache requires fld_thread_key be in env */
1002 rc = lu_env_init(&env, LCT_MD_THREAD | LCT_DT_THREAD | LCT_MG_THREAD);
1004 CWARN("cannot init env for nodemap config: rc = %d\n", rc);
1008 mutex_lock(&ncf_list_lock);
1009 list_for_each_entry(ncf, &ncf_list_head, ncf_list) {
1010 struct dt_device *dev = lu2dt_dev(ncf->ncf_obj->do_lu.lo_dev);
1011 struct obd_device *obd = ncf->ncf_obj->do_lu.lo_dev->ld_obd;
1012 struct dt_object *o;
1014 /* put current config file so save conf can rewrite it */
1015 lu_object_put_nocache(&env, &ncf->ncf_obj->do_lu);
1016 ncf->ncf_obj = NULL;
1018 o = nodemap_save_config_cache(&env, dev, ncf->ncf_los);
1020 CWARN("%s: error writing to nodemap config: rc = %d\n",
1025 mutex_unlock(&ncf_list_lock);
1030 /* tracks if config still needs to be loaded, either from disk or network */
1031 static bool nodemap_config_loaded;
1032 static DEFINE_MUTEX(nodemap_config_loaded_lock);
1035 * Ensures that configs loaded over the wire are prioritized over those loaded
1038 * \param config config to set as the active config
1040 void nodemap_config_set_active_mgc(struct nodemap_config *config)
1042 mutex_lock(&nodemap_config_loaded_lock);
1043 nodemap_config_set_active(config);
1044 nodemap_config_loaded = true;
1045 nodemap_save_all_caches();
1046 mutex_unlock(&nodemap_config_loaded_lock);
1048 EXPORT_SYMBOL(nodemap_config_set_active_mgc);
1051 * Register a dt_object representing the config index file. This should be
1052 * called by targets in order to load the nodemap configuration from disk. The
1053 * dt_object should be created with local_index_find_or_create and the index
1054 * features should be enabled with do_index_try.
1056 * \param obj dt_object returned by local_index_find_or_create
1058 * \retval on success: nm_config_file handle for later deregistration
1059 * \retval -ENOMEM memory allocation failure
1060 * \retval -ENOENT error loading nodemap config
1061 * \retval -EINVAL error loading nodemap config
1062 * \retval -EEXIST nodemap config already registered for MGS
1064 struct nm_config_file *nm_config_file_register_mgs(const struct lu_env *env,
1065 struct dt_object *obj,
1066 struct local_oid_storage *los)
1068 struct nm_config_file *ncf;
1072 if (nodemap_mgs_ncf != NULL)
1073 GOTO(out, ncf = ERR_PTR(-EEXIST));
1077 GOTO(out, ncf = ERR_PTR(-ENOMEM));
1079 /* if loading from cache, prevent activation of MGS config until cache
1080 * loading is done, so disk config is overwritten by MGS config.
1082 mutex_lock(&nodemap_config_loaded_lock);
1083 rc = nodemap_load_entries(env, obj);
1085 nodemap_config_loaded = true;
1086 mutex_unlock(&nodemap_config_loaded_lock);
1090 GOTO(out, ncf = ERR_PTR(rc));
1093 lu_object_get(&obj->do_lu);
1098 nodemap_mgs_ncf = ncf;
1103 EXPORT_SYMBOL(nm_config_file_register_mgs);
1105 struct nm_config_file *nm_config_file_register_tgt(const struct lu_env *env,
1106 struct dt_device *dev,
1107 struct local_oid_storage *los)
1109 struct nm_config_file *ncf;
1110 struct dt_object *config_obj = NULL;
1115 RETURN(ERR_PTR(-ENOMEM));
1117 /* don't load from cache if config already loaded */
1118 mutex_lock(&nodemap_config_loaded_lock);
1119 if (!nodemap_config_loaded) {
1120 config_obj = nodemap_cache_find_create(env, dev, los, 0);
1121 if (IS_ERR(config_obj))
1122 rc = PTR_ERR(config_obj);
1124 rc = nodemap_load_entries(env, config_obj);
1127 nodemap_config_loaded = true;
1129 mutex_unlock(&nodemap_config_loaded_lock);
1133 /* sync on disk caches w/ loaded config in memory, ncf_obj may change */
1135 config_obj = nodemap_save_config_cache(env, dev, los);
1136 if (IS_ERR(config_obj))
1137 GOTO(out_ncf, rc = PTR_ERR(config_obj));
1140 ncf->ncf_obj = config_obj;
1143 mutex_lock(&ncf_list_lock);
1144 list_add(&ncf->ncf_list, &ncf_list_head);
1145 mutex_unlock(&ncf_list_lock);
1150 RETURN(ERR_PTR(rc));
1155 EXPORT_SYMBOL(nm_config_file_register_tgt);
1158 * Deregister a nm_config_file. Should be called by targets during cleanup.
1160 * \param ncf config file to deregister
1162 void nm_config_file_deregister_mgs(const struct lu_env *env,
1163 struct nm_config_file *ncf)
1166 LASSERT(nodemap_mgs_ncf == ncf);
1168 nodemap_mgs_ncf = NULL;
1170 lu_object_put(env, &ncf->ncf_obj->do_lu);
1176 EXPORT_SYMBOL(nm_config_file_deregister_mgs);
1178 void nm_config_file_deregister_tgt(const struct lu_env *env,
1179 struct nm_config_file *ncf)
1186 mutex_lock(&ncf_list_lock);
1187 list_del(&ncf->ncf_list);
1188 mutex_unlock(&ncf_list_lock);
1191 lu_object_put(env, &ncf->ncf_obj->do_lu);
1197 EXPORT_SYMBOL(nm_config_file_deregister_tgt);
1199 int nodemap_process_idx_pages(struct nodemap_config *config, union lu_page *lip,
1200 struct lu_nodemap **recent_nodemap)
1202 struct nodemap_key *key;
1203 union nodemap_rec *rec;
1208 int size = dt_nodemap_features.dif_keysize_max +
1209 dt_nodemap_features.dif_recsize_max;
1212 for (j = 0; j < LU_PAGE_COUNT; j++) {
1213 if (lip->lp_idx.lip_magic != LIP_MAGIC)
1216 /* get and process keys and records from page */
1217 for (k = 0; k < lip->lp_idx.lip_nr; k++) {
1218 entry = lip->lp_idx.lip_entries + k * size;
1219 key = (struct nodemap_key *)entry;
1221 entry += dt_nodemap_features.dif_keysize_max;
1222 rec = (union nodemap_rec *)entry;
1224 rc = nodemap_process_keyrec(config, key, rec,
1235 EXPORT_SYMBOL(nodemap_process_idx_pages);
1237 int nodemap_index_read(struct lu_env *env,
1238 struct nm_config_file *ncf,
1239 struct idx_info *ii,
1240 const struct lu_rdpg *rdpg)
1242 struct dt_object *nodemap_idx = ncf->ncf_obj;
1246 ii->ii_keysize = dt_nodemap_features.dif_keysize_max;
1247 ii->ii_recsize = dt_nodemap_features.dif_recsize_max;
1249 dt_read_lock(env, nodemap_idx, 0);
1250 version = dt_version_get(env, nodemap_idx);
1251 if (rdpg->rp_hash != 0 && ii->ii_version != version) {
1252 CDEBUG(D_INFO, "nodemap config changed while sending, "
1253 "old "LPU64", new "LPU64"\n",
1256 ii->ii_hash_end = 0;
1258 rc = dt_index_walk(env, nodemap_idx, rdpg, NULL, ii);
1259 CDEBUG(D_INFO, "walked index, hashend %llx\n", ii->ii_hash_end);
1263 ii->ii_version = version;
1265 dt_read_unlock(env, nodemap_idx);
1268 EXPORT_SYMBOL(nodemap_index_read);
1271 * Returns the current nodemap configuration to MGC by walking the nodemap
1272 * config index and storing it in the response buffer.
1274 * \param req incoming MGS_CONFIG_READ request
1276 * \retval -EINVAL malformed request
1277 * \retval -ENOTCONN client evicted/reconnected already
1278 * \retval -ETIMEDOUT client timeout or network error
1281 int nodemap_get_config_req(struct obd_device *mgs_obd,
1282 struct ptlrpc_request *req)
1284 struct mgs_config_body *body;
1285 struct mgs_config_res *res;
1286 struct lu_rdpg rdpg;
1287 struct idx_info nodemap_ii;
1288 struct ptlrpc_bulk_desc *desc;
1289 struct l_wait_info lwi;
1290 struct tg_export_data *rqexp_ted = &req->rq_export->exp_target_data;
1296 body = req_capsule_client_get(&req->rq_pill, &RMF_MGS_CONFIG_BODY);
1300 if (body->mcb_type != CONFIG_T_NODEMAP)
1303 rdpg.rp_count = (body->mcb_units << body->mcb_bits);
1304 rdpg.rp_npages = (rdpg.rp_count + PAGE_SIZE - 1) >>
1306 if (rdpg.rp_npages > PTLRPC_MAX_BRW_PAGES)
1309 CDEBUG(D_INFO, "reading nodemap log, name '%s', size = %u\n",
1310 body->mcb_name, rdpg.rp_count);
1312 /* allocate pages to store the containers */
1313 OBD_ALLOC(rdpg.rp_pages, sizeof(*rdpg.rp_pages) * rdpg.rp_npages);
1314 if (rdpg.rp_pages == NULL)
1316 for (i = 0; i < rdpg.rp_npages; i++) {
1317 rdpg.rp_pages[i] = alloc_page(GFP_NOFS);
1318 if (rdpg.rp_pages[i] == NULL)
1319 GOTO(out, rc = -ENOMEM);
1322 rdpg.rp_hash = body->mcb_offset;
1323 nodemap_ii.ii_magic = IDX_INFO_MAGIC;
1324 nodemap_ii.ii_flags = II_FL_NOHASH;
1325 nodemap_ii.ii_version = rqexp_ted->ted_nodemap_version;
1327 bytes = nodemap_index_read(req->rq_svc_thread->t_env,
1328 mgs_obd->u.obt.obt_nodemap_config_file,
1329 &nodemap_ii, &rdpg);
1331 GOTO(out, rc = bytes);
1333 rqexp_ted->ted_nodemap_version = nodemap_ii.ii_version;
1335 res = req_capsule_server_get(&req->rq_pill, &RMF_MGS_CONFIG_RES);
1337 GOTO(out, rc = -EINVAL);
1338 res->mcr_offset = nodemap_ii.ii_hash_end;
1339 res->mcr_size = bytes;
1341 page_count = (bytes + PAGE_SIZE - 1) >> PAGE_SHIFT;
1342 LASSERT(page_count <= rdpg.rp_count);
1343 desc = ptlrpc_prep_bulk_exp(req, page_count, 1,
1344 PTLRPC_BULK_PUT_SOURCE |
1345 PTLRPC_BULK_BUF_KIOV,
1347 &ptlrpc_bulk_kiov_pin_ops);
1349 GOTO(out, rc = -ENOMEM);
1351 for (i = 0; i < page_count && bytes > 0; i++) {
1352 ptlrpc_prep_bulk_page_pin(desc, rdpg.rp_pages[i], 0,
1353 min_t(int, bytes, PAGE_SIZE));
1357 rc = target_bulk_io(req->rq_export, desc, &lwi);
1358 ptlrpc_free_bulk(desc);
1361 if (rdpg.rp_pages != NULL) {
1362 for (i = 0; i < rdpg.rp_npages; i++)
1363 if (rdpg.rp_pages[i] != NULL)
1364 __free_page(rdpg.rp_pages[i]);
1365 OBD_FREE(rdpg.rp_pages,
1366 rdpg.rp_npages * sizeof(rdpg.rp_pages[0]));
1370 EXPORT_SYMBOL(nodemap_get_config_req);