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) 2017, 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 <uapi/linux/lnet/lnet-types.h>
54 #include <uapi/linux/lustre/lustre_idl.h>
55 #include <uapi/linux/lustre/lustre_disk.h>
56 #include <dt_object.h>
57 #include <lu_object.h>
58 #include <lustre_net.h>
59 #include <lustre_nodemap.h>
60 #include <obd_class.h>
61 #include <obd_support.h>
62 #include "nodemap_internal.h"
64 /* list of registered nodemap index files, except MGS */
65 static LIST_HEAD(ncf_list_head);
66 static DEFINE_MUTEX(ncf_list_lock);
68 /* MGS index is different than others, others are listeners to MGS idx */
69 static struct nm_config_file *nodemap_mgs_ncf;
71 static void nodemap_cluster_key_init(struct nodemap_key *nk, unsigned int nm_id,
72 enum nodemap_cluster_rec_subid subid)
74 nk->nk_nodemap_id = cpu_to_le32(nm_idx_set_type(nm_id,
75 NODEMAP_CLUSTER_IDX));
76 nk->nk_cluster_subid = subid;
79 static void nodemap_cluster_rec_init(union nodemap_rec *nr,
80 const struct lu_nodemap *nodemap)
82 BUILD_BUG_ON(sizeof(nr->ncr.ncr_name) != sizeof(nodemap->nm_name));
84 strncpy(nr->ncr.ncr_name, nodemap->nm_name, sizeof(nr->ncr.ncr_name));
85 nr->ncr.ncr_squash_uid = cpu_to_le32(nodemap->nm_squash_uid);
86 nr->ncr.ncr_squash_gid = cpu_to_le32(nodemap->nm_squash_gid);
87 nr->ncr.ncr_squash_projid = cpu_to_le32(nodemap->nm_squash_projid);
89 (nodemap->nmf_trust_client_ids ?
90 NM_FL_TRUST_CLIENT_IDS : 0) |
91 (nodemap->nmf_allow_root_access ?
92 NM_FL_ALLOW_ROOT_ACCESS : 0) |
93 (nodemap->nmf_deny_unknown ?
94 NM_FL_DENY_UNKNOWN : 0) |
95 (nodemap->nmf_map_mode & NODEMAP_MAP_UID ?
97 (nodemap->nmf_map_mode & NODEMAP_MAP_GID ?
99 (nodemap->nmf_map_mode & NODEMAP_MAP_PROJID ?
100 NM_FL_MAP_PROJID : 0) |
101 (nodemap->nmf_enable_audit ?
102 NM_FL_ENABLE_AUDIT : 0) |
103 (nodemap->nmf_forbid_encryption ?
104 NM_FL_FORBID_ENCRYPT : 0);
106 (nodemap->nmf_readonly_mount ?
107 NM_FL2_READONLY_MOUNT : 0);
110 static void nodemap_cluster_roles_rec_init(union nodemap_rec *nr,
111 const struct lu_nodemap *nodemap)
113 struct nodemap_cluster_roles_rec *ncrr = &nr->ncrr;
115 memset(ncrr, 0, sizeof(struct nodemap_cluster_roles_rec));
116 ncrr->ncrr_roles = cpu_to_le64(nodemap->nmf_rbac);
119 static void nodemap_idmap_key_init(struct nodemap_key *nk, unsigned int nm_id,
120 enum nodemap_id_type id_type,
123 enum nodemap_idx_type idx_type;
125 if (id_type == NODEMAP_UID)
126 idx_type = NODEMAP_UIDMAP_IDX;
127 else if (id_type == NODEMAP_GID)
128 idx_type = NODEMAP_GIDMAP_IDX;
129 else if (id_type == NODEMAP_PROJID)
130 idx_type = NODEMAP_PROJIDMAP_IDX;
132 idx_type = NODEMAP_EMPTY_IDX;
134 nk->nk_nodemap_id = cpu_to_le32(nm_idx_set_type(nm_id, idx_type));
135 nk->nk_id_client = cpu_to_le32(id_client);
138 static void nodemap_idmap_rec_init(union nodemap_rec *nr, u32 id_fs)
140 nr->nir.nir_id_fs = cpu_to_le32(id_fs);
143 static void nodemap_range_key_init(struct nodemap_key *nk, unsigned int nm_id,
146 nk->nk_nodemap_id = cpu_to_le32(nm_idx_set_type(nm_id,
148 nk->nk_range_id = cpu_to_le32(rn_id);
151 static void nodemap_range_rec_init(union nodemap_rec *nr,
152 const lnet_nid_t nid[2])
154 nr->nrr.nrr_start_nid = cpu_to_le64(nid[0]);
155 nr->nrr.nrr_end_nid = cpu_to_le64(nid[1]);
158 static void nodemap_global_key_init(struct nodemap_key *nk)
160 nk->nk_nodemap_id = cpu_to_le32(nm_idx_set_type(0, NODEMAP_GLOBAL_IDX));
164 static void nodemap_global_rec_init(union nodemap_rec *nr, bool active)
166 nr->ngr.ngr_is_active = active;
169 /* should be called with dt_write lock */
170 static void nodemap_inc_version(const struct lu_env *env,
171 struct dt_object *nodemap_idx,
174 u64 ver = dt_version_get(env, nodemap_idx);
175 dt_version_set(env, nodemap_idx, ver + 1, th);
178 enum ncfc_find_create {
182 static struct dt_object *nodemap_cache_find_create(const struct lu_env *env,
183 struct dt_device *dev,
184 struct local_oid_storage *los,
185 enum ncfc_find_create create_new)
188 struct dt_object *root_obj;
189 struct dt_object *nm_obj;
192 rc = dt_root_get(env, dev, &tfid);
194 GOTO(out, nm_obj = ERR_PTR(rc));
196 root_obj = dt_locate(env, dev, &tfid);
197 if (unlikely(IS_ERR(root_obj)))
198 GOTO(out, nm_obj = root_obj);
200 rc = dt_lookup_dir(env, root_obj, LUSTRE_NODEMAP_NAME, &tfid);
203 GOTO(out_root, nm_obj = ERR_PTR(-EROFS));
205 GOTO(out_root, nm_obj = ERR_PTR(rc));
206 } else if (dev->dd_rdonly && create_new == NCFC_CREATE_NEW) {
207 GOTO(out_root, nm_obj = ERR_PTR(-EROFS));
211 /* if loading index fails the first time, create new index */
212 if (create_new == NCFC_CREATE_NEW && rc != -ENOENT) {
213 CDEBUG(D_INFO, "removing old index, creating new one\n");
214 rc = local_object_unlink(env, dev, root_obj,
215 LUSTRE_NODEMAP_NAME);
217 /* XXX not sure the best way to get obd name. */
218 CERROR("cannot destroy nodemap index: rc = %d\n",
220 GOTO(out_root, nm_obj = ERR_PTR(rc));
224 nm_obj = local_index_find_or_create(env, los, root_obj,
226 S_IFREG | S_IRUGO | S_IWUSR,
227 &dt_nodemap_features);
229 GOTO(out_root, nm_obj);
231 if (nm_obj->do_index_ops == NULL) {
232 rc = nm_obj->do_ops->do_index_try(env, nm_obj,
233 &dt_nodemap_features);
234 /* even if loading from tgt fails, connecting to MGS will
238 dt_object_put(env, nm_obj);
240 if (create_new == NCFC_CREATE_NEW)
241 GOTO(out_root, nm_obj = ERR_PTR(rc));
243 CERROR("cannot load nodemap index from disk, creating "
244 "new index: rc = %d\n", rc);
245 create_new = NCFC_CREATE_NEW;
251 dt_object_put(env, root_obj);
256 static int nodemap_idx_insert(const struct lu_env *env,
257 struct dt_object *idx,
258 const struct nodemap_key *nk,
259 const union nodemap_rec *nr)
262 struct dt_device *dev = lu2dt_dev(idx->do_lu.lo_dev);
265 BUILD_BUG_ON(sizeof(union nodemap_rec) != 32);
267 th = dt_trans_create(env, dev);
270 GOTO(out, rc = PTR_ERR(th));
272 rc = dt_declare_insert(env, idx,
273 (const struct dt_rec *)nr,
274 (const struct dt_key *)nk, th);
278 rc = dt_declare_version_set(env, idx, th);
282 rc = dt_trans_start_local(env, dev, th);
286 dt_write_lock(env, idx, 0);
288 rc = dt_insert(env, idx, (const struct dt_rec *)nr,
289 (const struct dt_key *)nk, th);
291 nodemap_inc_version(env, idx, th);
292 dt_write_unlock(env, idx);
294 dt_trans_stop(env, dev, th);
299 static int nodemap_idx_update(const struct lu_env *env,
300 struct dt_object *idx,
301 const struct nodemap_key *nk,
302 const union nodemap_rec *nr)
305 struct dt_device *dev = lu2dt_dev(idx->do_lu.lo_dev);
308 th = dt_trans_create(env, dev);
311 GOTO(out, rc = PTR_ERR(th));
313 rc = dt_declare_delete(env, idx, (const struct dt_key *)nk, th);
317 rc = dt_declare_insert(env, idx, (const struct dt_rec *)nr,
318 (const struct dt_key *)nk, th);
322 rc = dt_declare_version_set(env, idx, th);
326 rc = dt_trans_start_local(env, dev, th);
330 dt_write_lock(env, idx, 0);
332 rc = dt_delete(env, idx, (const struct dt_key *)nk, th);
336 rc = dt_insert(env, idx, (const struct dt_rec *)nr,
337 (const struct dt_key *)nk, th);
341 nodemap_inc_version(env, idx, th);
343 dt_write_unlock(env, idx);
345 dt_trans_stop(env, dev, th);
350 static int nodemap_idx_delete(const struct lu_env *env,
351 struct dt_object *idx,
352 const struct nodemap_key *nk,
353 const union nodemap_rec *unused)
356 struct dt_device *dev = lu2dt_dev(idx->do_lu.lo_dev);
359 th = dt_trans_create(env, dev);
362 GOTO(out, rc = PTR_ERR(th));
364 rc = dt_declare_delete(env, idx, (const struct dt_key *)nk, th);
368 rc = dt_declare_version_set(env, idx, th);
372 rc = dt_trans_start_local(env, dev, th);
376 dt_write_lock(env, idx, 0);
378 rc = dt_delete(env, idx, (const struct dt_key *)nk, th);
380 nodemap_inc_version(env, idx, th);
382 dt_write_unlock(env, idx);
384 dt_trans_stop(env, dev, th);
394 static int nodemap_idx_cluster_add_update(const struct lu_nodemap *nodemap,
395 struct dt_object *idx,
396 enum nm_add_update update,
397 enum nodemap_cluster_rec_subid subid)
399 struct nodemap_key nk;
400 union nodemap_rec nr;
407 if (nodemap_mgs_ncf == NULL) {
408 CERROR("cannot add nodemap config to non-existing MGS.\n");
411 idx = nodemap_mgs_ncf->ncf_obj;
414 rc = lu_env_init(&env, LCT_LOCAL);
418 nodemap_cluster_key_init(&nk, nodemap->nm_id, subid);
420 case NODEMAP_CLUSTER_REC:
421 nodemap_cluster_rec_init(&nr, nodemap);
423 case NODEMAP_CLUSTER_ROLES:
424 nodemap_cluster_roles_rec_init(&nr, nodemap);
427 CWARN("%s: unknown subtype %u\n", nodemap->nm_name, subid);
428 GOTO(fini, rc = -EINVAL);
431 if (update == NM_UPDATE)
432 rc = nodemap_idx_update(&env, idx, &nk, &nr);
434 rc = nodemap_idx_insert(&env, idx, &nk, &nr);
441 int nodemap_idx_nodemap_add(const struct lu_nodemap *nodemap)
443 return nodemap_idx_cluster_add_update(nodemap, NULL,
444 NM_ADD, NODEMAP_CLUSTER_REC);
447 int nodemap_idx_nodemap_update(const struct lu_nodemap *nodemap)
449 return nodemap_idx_cluster_add_update(nodemap, NULL,
450 NM_UPDATE, NODEMAP_CLUSTER_REC);
453 int nodemap_idx_nodemap_del(const struct lu_nodemap *nodemap)
456 struct lu_idmap *idmap;
457 struct lu_idmap *temp;
458 struct lu_nid_range *range;
459 struct lu_nid_range *range_temp;
460 struct nodemap_key nk;
467 if (nodemap_mgs_ncf == NULL) {
468 CERROR("cannot add nodemap config to non-existing MGS.\n");
472 rc = lu_env_init(&env, LCT_LOCAL);
476 nodemap_cluster_key_init(&nk, nodemap->nm_id, NODEMAP_CLUSTER_ROLES);
477 rc2 = nodemap_idx_delete(&env, nodemap_mgs_ncf->ncf_obj, &nk, NULL);
478 if (rc2 < 0 && rc2 != -ENOENT)
481 root = nodemap->nm_fs_to_client_uidmap;
482 nm_rbtree_postorder_for_each_entry_safe(idmap, temp, &root,
484 nodemap_idmap_key_init(&nk, nodemap->nm_id, NODEMAP_UID,
486 rc2 = nodemap_idx_delete(&env, nodemap_mgs_ncf->ncf_obj,
492 root = nodemap->nm_client_to_fs_gidmap;
493 nm_rbtree_postorder_for_each_entry_safe(idmap, temp, &root,
495 nodemap_idmap_key_init(&nk, nodemap->nm_id, NODEMAP_GID,
497 rc2 = nodemap_idx_delete(&env, nodemap_mgs_ncf->ncf_obj,
503 root = nodemap->nm_client_to_fs_projidmap;
504 nm_rbtree_postorder_for_each_entry_safe(idmap, temp, &root,
506 nodemap_idmap_key_init(&nk, nodemap->nm_id, NODEMAP_PROJID,
508 rc2 = nodemap_idx_delete(&env, nodemap_mgs_ncf->ncf_obj,
514 list_for_each_entry_safe(range, range_temp, &nodemap->nm_ranges,
516 nodemap_range_key_init(&nk, nodemap->nm_id, range->rn_id);
517 rc2 = nodemap_idx_delete(&env, nodemap_mgs_ncf->ncf_obj,
523 nodemap_cluster_key_init(&nk, nodemap->nm_id, NODEMAP_CLUSTER_REC);
524 rc2 = nodemap_idx_delete(&env, nodemap_mgs_ncf->ncf_obj, &nk, NULL);
533 int nodemap_idx_cluster_roles_add(const struct lu_nodemap *nodemap)
535 return nodemap_idx_cluster_add_update(nodemap, NULL, NM_ADD,
536 NODEMAP_CLUSTER_ROLES);
539 int nodemap_idx_cluster_roles_update(const struct lu_nodemap *nodemap)
541 return nodemap_idx_cluster_add_update(nodemap, NULL, NM_UPDATE,
542 NODEMAP_CLUSTER_ROLES);
545 int nodemap_idx_cluster_roles_del(const struct lu_nodemap *nodemap)
547 struct nodemap_key nk;
553 if (nodemap_mgs_ncf == NULL) {
554 CERROR("cannot add nodemap config to non-existing MGS.\n");
558 rc = lu_env_init(&env, LCT_LOCAL);
562 nodemap_cluster_key_init(&nk, nodemap->nm_id, NODEMAP_CLUSTER_ROLES);
563 rc = nodemap_idx_delete(&env, nodemap_mgs_ncf->ncf_obj, &nk, NULL);
569 int nodemap_idx_range_add(const struct lu_nid_range *range,
570 const lnet_nid_t nid[2])
572 struct nodemap_key nk;
573 union nodemap_rec nr;
578 if (nodemap_mgs_ncf == NULL) {
579 CERROR("cannot add nodemap config to non-existing MGS.\n");
583 rc = lu_env_init(&env, LCT_LOCAL);
587 nodemap_range_key_init(&nk, range->rn_nodemap->nm_id, range->rn_id);
588 nodemap_range_rec_init(&nr, nid);
590 rc = nodemap_idx_insert(&env, nodemap_mgs_ncf->ncf_obj, &nk, &nr);
596 int nodemap_idx_range_del(const struct lu_nid_range *range)
598 struct nodemap_key nk;
603 if (nodemap_mgs_ncf == NULL) {
604 CERROR("cannot add nodemap config to non-existing MGS.\n");
608 rc = lu_env_init(&env, LCT_LOCAL);
612 nodemap_range_key_init(&nk, range->rn_nodemap->nm_id, range->rn_id);
614 rc = nodemap_idx_delete(&env, nodemap_mgs_ncf->ncf_obj, &nk, NULL);
620 int nodemap_idx_idmap_add(const struct lu_nodemap *nodemap,
621 enum nodemap_id_type id_type,
624 struct nodemap_key nk;
625 union nodemap_rec nr;
630 if (nodemap_mgs_ncf == NULL) {
631 CERROR("cannot add nodemap config to non-existing MGS.\n");
635 rc = lu_env_init(&env, LCT_LOCAL);
639 nodemap_idmap_key_init(&nk, nodemap->nm_id, id_type, map[0]);
640 nodemap_idmap_rec_init(&nr, map[1]);
642 rc = nodemap_idx_insert(&env, nodemap_mgs_ncf->ncf_obj, &nk, &nr);
648 int nodemap_idx_idmap_del(const struct lu_nodemap *nodemap,
649 enum nodemap_id_type id_type,
652 struct nodemap_key nk;
657 if (nodemap_mgs_ncf == NULL) {
658 CERROR("cannot add nodemap config to non-existing MGS.\n");
662 rc = lu_env_init(&env, LCT_LOCAL);
666 nodemap_idmap_key_init(&nk, nodemap->nm_id, id_type, map[0]);
668 rc = nodemap_idx_delete(&env, nodemap_mgs_ncf->ncf_obj, &nk, NULL);
674 static int nodemap_idx_global_add_update(bool value, enum nm_add_update update)
676 struct nodemap_key nk;
677 union nodemap_rec nr;
682 if (nodemap_mgs_ncf == NULL) {
683 CERROR("cannot add nodemap config to non-existing MGS.\n");
687 rc = lu_env_init(&env, LCT_LOCAL);
691 nodemap_global_key_init(&nk);
692 nodemap_global_rec_init(&nr, value);
694 if (update == NM_UPDATE)
695 rc = nodemap_idx_update(&env, nodemap_mgs_ncf->ncf_obj,
698 rc = nodemap_idx_insert(&env, nodemap_mgs_ncf->ncf_obj,
706 int nodemap_idx_nodemap_activate(bool value)
708 return nodemap_idx_global_add_update(value, NM_UPDATE);
711 static enum nodemap_idx_type nodemap_get_key_type(const struct nodemap_key *key)
715 nodemap_id = le32_to_cpu(key->nk_nodemap_id);
716 return nm_idx_get_type(nodemap_id);
719 static int nodemap_get_key_subtype(const struct nodemap_key *key)
721 enum nodemap_idx_type type = nodemap_get_key_type(key);
723 return type == NODEMAP_CLUSTER_IDX ? key->nk_cluster_subid : -1;
726 static int nodemap_cluster_rec_helper(struct nodemap_config *config,
728 const union nodemap_rec *rec,
729 struct lu_nodemap **recent_nodemap)
731 struct lu_nodemap *nodemap, *old_nm;
732 enum nm_flag_bits flags;
733 enum nm_flag2_bits flags2;
735 nodemap = cfs_hash_lookup(config->nmc_nodemap_hash, rec->ncr.ncr_name);
736 if (nodemap == NULL) {
737 if (nodemap_id == LUSTRE_NODEMAP_DEFAULT_ID)
738 nodemap = nodemap_create(rec->ncr.ncr_name, config, 1);
740 nodemap = nodemap_create(rec->ncr.ncr_name, config, 0);
742 return PTR_ERR(nodemap);
744 /* we need to override the local ID with the saved ID */
745 nodemap->nm_id = nodemap_id;
746 if (nodemap_id > config->nmc_nodemap_highest_id)
747 config->nmc_nodemap_highest_id = nodemap_id;
749 } else if (nodemap->nm_id != nodemap_id) {
750 nodemap_putref(nodemap);
754 nodemap->nm_squash_uid = le32_to_cpu(rec->ncr.ncr_squash_uid);
755 nodemap->nm_squash_gid = le32_to_cpu(rec->ncr.ncr_squash_gid);
756 nodemap->nm_squash_projid = le32_to_cpu(rec->ncr.ncr_squash_projid);
758 flags = rec->ncr.ncr_flags;
759 nodemap->nmf_allow_root_access = flags & NM_FL_ALLOW_ROOT_ACCESS;
760 nodemap->nmf_trust_client_ids = flags & NM_FL_TRUST_CLIENT_IDS;
761 nodemap->nmf_deny_unknown = flags & NM_FL_DENY_UNKNOWN;
762 nodemap->nmf_map_mode =
763 (flags & NM_FL_MAP_UID ? NODEMAP_MAP_UID : 0) |
764 (flags & NM_FL_MAP_GID ? NODEMAP_MAP_GID : 0) |
765 (flags & NM_FL_MAP_PROJID ? NODEMAP_MAP_PROJID : 0);
766 if (nodemap->nmf_map_mode == NODEMAP_MAP_BOTH_LEGACY)
767 nodemap->nmf_map_mode = NODEMAP_MAP_BOTH;
768 nodemap->nmf_enable_audit = flags & NM_FL_ENABLE_AUDIT;
769 nodemap->nmf_forbid_encryption = flags & NM_FL_FORBID_ENCRYPT;
770 flags2 = rec->ncr.ncr_flags2;
771 nodemap->nmf_readonly_mount = flags2 & NM_FL2_READONLY_MOUNT;
772 /* by default, and in the absence of cluster_roles, grant all roles */
773 nodemap->nmf_rbac = NODEMAP_RBAC_ALL;
775 /* The fileset should be saved otherwise it will be empty
776 * every time in case of "NODEMAP_CLUSTER_IDX".
778 mutex_lock(&active_config_lock);
779 old_nm = nodemap_lookup(rec->ncr.ncr_name);
780 if (!IS_ERR(old_nm) && old_nm->nm_fileset[0] != '\0')
781 strlcpy(nodemap->nm_fileset, old_nm->nm_fileset,
782 sizeof(nodemap->nm_fileset));
783 mutex_unlock(&active_config_lock);
785 nodemap_putref(old_nm);
787 if (*recent_nodemap == NULL) {
788 *recent_nodemap = nodemap;
789 INIT_LIST_HEAD(&nodemap->nm_list);
791 list_add(&nodemap->nm_list, &(*recent_nodemap)->nm_list);
793 nodemap_putref(nodemap);
798 static int nodemap_cluster_roles_helper(struct lu_nodemap *nodemap,
799 const union nodemap_rec *rec)
801 nodemap->nmf_rbac = le64_to_cpu(rec->ncrr.ncrr_roles);
807 * Process a key/rec pair and modify the new configuration.
809 * \param config configuration to update with this key/rec data
810 * \param key key of the record that was loaded
811 * \param rec record that was loaded
812 * \param recent_nodemap last referenced nodemap
813 * \retval type of record processed, see enum #nodemap_idx_type
814 * \retval -ENOENT range or map loaded before nodemap record
815 * \retval -EINVAL duplicate nodemap cluster records found with
816 * different IDs, or nodemap has invalid name
819 static int nodemap_process_keyrec(struct nodemap_config *config,
820 const struct nodemap_key *key,
821 const union nodemap_rec *rec,
822 struct lu_nodemap **recent_nodemap)
824 struct lu_nodemap *nodemap = NULL;
825 enum nodemap_idx_type type;
826 enum nodemap_id_type id_type;
835 BUILD_BUG_ON(sizeof(union nodemap_rec) != 32);
837 nodemap_id = le32_to_cpu(key->nk_nodemap_id);
838 type = nodemap_get_key_type(key);
839 subtype = nodemap_get_key_subtype(key);
840 nodemap_id = nm_idx_set_type(nodemap_id, 0);
842 CDEBUG(D_INFO, "found config entry, nm_id %d type %d subtype %d\n",
843 nodemap_id, type, subtype);
845 /* find the correct nodemap in the load list */
846 if (type == NODEMAP_RANGE_IDX || type == NODEMAP_UIDMAP_IDX ||
847 type == NODEMAP_GIDMAP_IDX || type == NODEMAP_PROJIDMAP_IDX ||
848 (type == NODEMAP_CLUSTER_IDX && subtype != NODEMAP_CLUSTER_REC)) {
849 struct lu_nodemap *tmp = NULL;
851 nodemap = *recent_nodemap;
854 GOTO(out, rc = -ENOENT);
856 if (nodemap->nm_id != nodemap_id) {
857 list_for_each_entry(tmp, &nodemap->nm_list, nm_list)
858 if (tmp->nm_id == nodemap_id) {
863 if (nodemap->nm_id != nodemap_id)
864 GOTO(out, rc = -ENOENT);
867 /* update most recently used nodemap if necessay */
868 if (nodemap != *recent_nodemap)
869 *recent_nodemap = nodemap;
873 case NODEMAP_EMPTY_IDX:
875 CWARN("Found nodemap config record without type field, "
876 " nodemap_id=%d. nodemap config file corrupt?\n",
879 case NODEMAP_CLUSTER_IDX:
880 switch (nodemap_get_key_subtype(key)) {
881 case NODEMAP_CLUSTER_REC:
882 rc = nodemap_cluster_rec_helper(config, nodemap_id, rec,
887 case NODEMAP_CLUSTER_ROLES:
888 rc = nodemap_cluster_roles_helper(nodemap, rec);
893 CWARN("%s: ignoring keyrec of type %d with subtype %u\n",
894 nodemap->nm_name, NODEMAP_CLUSTER_IDX,
895 nodemap_get_key_subtype(key));
899 case NODEMAP_RANGE_IDX:
900 nid[0] = le64_to_cpu(rec->nrr.nrr_start_nid);
901 nid[1] = le64_to_cpu(rec->nrr.nrr_end_nid);
903 rc = nodemap_add_range_helper(config, nodemap, nid,
904 le32_to_cpu(key->nk_range_id));
908 case NODEMAP_UIDMAP_IDX:
909 case NODEMAP_GIDMAP_IDX:
910 case NODEMAP_PROJIDMAP_IDX:
911 map[0] = le32_to_cpu(key->nk_id_client);
912 map[1] = le32_to_cpu(rec->nir.nir_id_fs);
914 if (type == NODEMAP_UIDMAP_IDX)
915 id_type = NODEMAP_UID;
916 else if (type == NODEMAP_GIDMAP_IDX)
917 id_type = NODEMAP_GID;
918 else if (type == NODEMAP_PROJIDMAP_IDX)
919 id_type = NODEMAP_PROJID;
921 GOTO(out, rc = -EINVAL);
923 rc = nodemap_add_idmap_helper(nodemap, id_type, map);
927 case NODEMAP_GLOBAL_IDX:
928 switch (key->nk_unused) {
930 config->nmc_nodemap_is_active = rec->ngr.ngr_is_active;
933 CWARN("%s: ignoring keyrec of type %d with subtype %u\n",
935 (*recent_nodemap)->nm_name : "nodemap",
936 NODEMAP_GLOBAL_IDX, key->nk_unused);
941 CWARN("%s: ignoring key %u:%u for unknown type %u\n",
942 recent_nodemap ? (*recent_nodemap)->nm_name : "nodemap",
943 key->nk_nodemap_id & 0x0FFFFFFF, key->nk_unused, type);
955 enum nm_config_passes {
956 NM_READ_CLUSTERS = 0,
957 NM_READ_ATTRIBUTES = 1,
960 static int nodemap_load_entries(const struct lu_env *env,
961 struct dt_object *nodemap_idx)
963 const struct dt_it_ops *iops;
965 struct lu_nodemap *recent_nodemap = NULL;
966 struct nodemap_config *new_config = NULL;
968 bool activate_nodemap = false;
969 bool loaded_global_idx = false;
970 enum nm_config_passes cur_pass = NM_READ_CLUSTERS;
975 iops = &nodemap_idx->do_index_ops->dio_it;
977 dt_read_lock(env, nodemap_idx, 0);
978 it = iops->init(env, nodemap_idx, 0);
980 GOTO(out, rc = PTR_ERR(it));
982 rc = iops->load(env, it, hash);
984 GOTO(out_iops_fini, rc);
986 /* rc == 0 means we need to advance to record */
988 rc = iops->next(env, it);
991 GOTO(out_iops_put, rc);
992 /* rc > 0 is eof, will be checked in while below */
994 /* rc == 1, we found initial record and can process below */
998 new_config = nodemap_config_alloc();
999 if (IS_ERR(new_config)) {
1000 rc = PTR_ERR(new_config);
1002 GOTO(out_iops_put, rc);
1005 /* rc > 0 is eof, check initial iops->next here as well */
1007 struct nodemap_key *key;
1008 union nodemap_rec rec;
1009 enum nodemap_idx_type key_type;
1012 key = (struct nodemap_key *)iops->key(env, it);
1013 key_type = nodemap_get_key_type((struct nodemap_key *)key);
1014 sub_type = nodemap_get_key_subtype((struct nodemap_key *)key);
1015 if ((cur_pass == NM_READ_CLUSTERS &&
1016 key_type == NODEMAP_CLUSTER_IDX &&
1017 sub_type == NODEMAP_CLUSTER_REC) ||
1018 (cur_pass == NM_READ_ATTRIBUTES &&
1019 (key_type != NODEMAP_CLUSTER_IDX ||
1020 sub_type != NODEMAP_CLUSTER_REC) &&
1021 key_type != NODEMAP_EMPTY_IDX)) {
1022 rc = iops->rec(env, it, (struct dt_rec *)&rec, 0);
1023 if (rc != -ESTALE) {
1025 GOTO(out_nodemap_config, rc);
1026 rc = nodemap_process_keyrec(new_config, key, &rec,
1029 GOTO(out_nodemap_config, rc);
1030 if (rc == NODEMAP_GLOBAL_IDX)
1031 loaded_global_idx = true;
1036 rc = iops->next(env, it);
1037 while (rc == -ESTALE);
1039 /* move to second pass */
1040 if (rc > 0 && cur_pass == NM_READ_CLUSTERS) {
1041 cur_pass = NM_READ_ATTRIBUTES;
1042 rc = iops->load(env, it, 0);
1044 rc = iops->next(env, it);
1057 nodemap_config_dealloc(new_config);
1059 /* creating new default needs to be done outside dt read lock */
1060 activate_nodemap = true;
1064 iops->fini(env, it);
1066 dt_read_unlock(env, nodemap_idx);
1069 CWARN("%s: failed to load nodemap configuration: rc = %d\n",
1070 nodemap_idx->do_lu.lo_dev->ld_obd->obd_name, rc);
1072 if (!activate_nodemap)
1075 if (new_config->nmc_default_nodemap == NULL) {
1076 /* new MGS won't have a default nm on disk, so create it here */
1077 struct lu_nodemap *nodemap =
1078 nodemap_create(DEFAULT_NODEMAP, new_config, 1);
1079 if (IS_ERR(nodemap)) {
1080 rc = PTR_ERR(nodemap);
1082 rc = nodemap_idx_cluster_add_update(
1083 new_config->nmc_default_nodemap,
1085 NM_ADD, NODEMAP_CLUSTER_REC);
1086 nodemap_putref(new_config->nmc_default_nodemap);
1090 /* new nodemap config won't have an active/inactive record */
1091 if (rc == 0 && loaded_global_idx == false) {
1092 struct nodemap_key nk;
1093 union nodemap_rec nr;
1095 nodemap_global_key_init(&nk);
1096 nodemap_global_rec_init(&nr, false);
1097 rc = nodemap_idx_insert(env, nodemap_idx, &nk, &nr);
1101 nodemap_config_set_active(new_config);
1103 nodemap_config_dealloc(new_config);
1109 * Step through active config and write to disk.
1111 static struct dt_object *
1112 nodemap_save_config_cache(const struct lu_env *env,
1113 struct dt_device *dev,
1114 struct local_oid_storage *los)
1116 struct dt_object *o;
1117 struct lu_nodemap *nodemap;
1118 struct lu_nodemap *nm_tmp;
1119 struct lu_nid_range *range;
1120 struct lu_nid_range *range_temp;
1121 struct lu_idmap *idmap;
1122 struct lu_idmap *id_tmp;
1123 struct rb_root root;
1124 struct nodemap_key nk;
1125 union nodemap_rec nr;
1126 LIST_HEAD(nodemap_list_head);
1131 /* create a new index file to fill with active config */
1132 o = nodemap_cache_find_create(env, dev, los, NCFC_CREATE_NEW);
1136 mutex_lock(&active_config_lock);
1138 /* convert hash to list so we don't spin */
1139 cfs_hash_for_each_safe(active_config->nmc_nodemap_hash,
1140 nm_hash_list_cb, &nodemap_list_head);
1142 list_for_each_entry_safe(nodemap, nm_tmp, &nodemap_list_head, nm_list) {
1143 nodemap_cluster_key_init(&nk, nodemap->nm_id,
1144 NODEMAP_CLUSTER_REC);
1145 nodemap_cluster_rec_init(&nr, nodemap);
1147 rc2 = nodemap_idx_insert(env, o, &nk, &nr);
1153 /* only insert NODEMAP_CLUSTER_ROLES idx in saved config cache
1154 * if nmf_rbac is not default value NODEMAP_RBAC_ALL
1156 if (nodemap->nmf_rbac != NODEMAP_RBAC_ALL) {
1157 nodemap_cluster_key_init(&nk, nodemap->nm_id,
1158 NODEMAP_CLUSTER_ROLES);
1159 nodemap_cluster_roles_rec_init(&nr, nodemap);
1160 rc2 = nodemap_idx_insert(env, o, &nk, &nr);
1165 down_read(&active_config->nmc_range_tree_lock);
1166 list_for_each_entry_safe(range, range_temp, &nodemap->nm_ranges,
1168 lnet_nid_t nid[2] = {
1172 nodemap_range_key_init(&nk, nodemap->nm_id,
1174 nodemap_range_rec_init(&nr, nid);
1175 rc2 = nodemap_idx_insert(env, o, &nk, &nr);
1179 up_read(&active_config->nmc_range_tree_lock);
1181 /* we don't need to take nm_idmap_lock because active config
1182 * lock prevents changes from happening to nodemaps
1184 root = nodemap->nm_client_to_fs_uidmap;
1185 nm_rbtree_postorder_for_each_entry_safe(idmap, id_tmp, &root,
1187 nodemap_idmap_key_init(&nk, nodemap->nm_id, NODEMAP_UID,
1189 nodemap_idmap_rec_init(&nr, idmap->id_fs);
1190 rc2 = nodemap_idx_insert(env, o, &nk, &nr);
1195 root = nodemap->nm_client_to_fs_gidmap;
1196 nm_rbtree_postorder_for_each_entry_safe(idmap, id_tmp, &root,
1198 nodemap_idmap_key_init(&nk, nodemap->nm_id, NODEMAP_GID,
1200 nodemap_idmap_rec_init(&nr, idmap->id_fs);
1201 rc2 = nodemap_idx_insert(env, o, &nk, &nr);
1206 root = nodemap->nm_client_to_fs_projidmap;
1207 nm_rbtree_postorder_for_each_entry_safe(idmap, id_tmp, &root,
1209 nodemap_idmap_key_init(&nk, nodemap->nm_id,
1212 nodemap_idmap_rec_init(&nr, idmap->id_fs);
1213 rc2 = nodemap_idx_insert(env, o, &nk, &nr);
1218 nodemap_global_key_init(&nk);
1219 nodemap_global_rec_init(&nr, active_config->nmc_nodemap_is_active);
1220 rc2 = nodemap_idx_insert(env, o, &nk, &nr);
1224 mutex_unlock(&active_config_lock);
1227 dt_object_put(env, o);
1234 static void nodemap_save_all_caches(void)
1236 struct nm_config_file *ncf;
1240 /* recreating nodemap cache requires fld_thread_key be in env */
1241 rc = lu_env_init(&env, LCT_MD_THREAD | LCT_DT_THREAD | LCT_MG_THREAD);
1243 CWARN("cannot init env for nodemap config: rc = %d\n", rc);
1247 mutex_lock(&ncf_list_lock);
1248 list_for_each_entry(ncf, &ncf_list_head, ncf_list) {
1249 struct dt_device *dev = lu2dt_dev(ncf->ncf_obj->do_lu.lo_dev);
1250 struct obd_device *obd = ncf->ncf_obj->do_lu.lo_dev->ld_obd;
1251 struct dt_object *o;
1253 /* put current config file so save conf can rewrite it */
1254 dt_object_put_nocache(&env, ncf->ncf_obj);
1255 ncf->ncf_obj = NULL;
1257 o = nodemap_save_config_cache(&env, dev, ncf->ncf_los);
1259 CWARN("%s: error writing to nodemap config: rc = %d\n",
1264 mutex_unlock(&ncf_list_lock);
1269 /* tracks if config still needs to be loaded, either from disk or network */
1270 static bool nodemap_config_loaded;
1271 static DEFINE_MUTEX(nodemap_config_loaded_lock);
1274 * Ensures that configs loaded over the wire are prioritized over those loaded
1277 * \param config config to set as the active config
1279 void nodemap_config_set_active_mgc(struct nodemap_config *config)
1281 mutex_lock(&nodemap_config_loaded_lock);
1282 nodemap_config_set_active(config);
1283 nodemap_config_loaded = true;
1284 nodemap_save_all_caches();
1285 mutex_unlock(&nodemap_config_loaded_lock);
1287 EXPORT_SYMBOL(nodemap_config_set_active_mgc);
1290 * Register a dt_object representing the config index file. This should be
1291 * called by targets in order to load the nodemap configuration from disk. The
1292 * dt_object should be created with local_index_find_or_create and the index
1293 * features should be enabled with do_index_try.
1295 * \param obj dt_object returned by local_index_find_or_create
1297 * \retval on success: nm_config_file handle for later deregistration
1298 * \retval -ENOMEM memory allocation failure
1299 * \retval -ENOENT error loading nodemap config
1300 * \retval -EINVAL error loading nodemap config
1301 * \retval -EEXIST nodemap config already registered for MGS
1303 struct nm_config_file *nm_config_file_register_mgs(const struct lu_env *env,
1304 struct dt_object *obj,
1305 struct local_oid_storage *los)
1307 struct nm_config_file *ncf;
1311 if (nodemap_mgs_ncf != NULL)
1312 GOTO(out, ncf = ERR_PTR(-EEXIST));
1316 GOTO(out, ncf = ERR_PTR(-ENOMEM));
1318 /* if loading from cache, prevent activation of MGS config until cache
1319 * loading is done, so disk config is overwritten by MGS config.
1321 mutex_lock(&nodemap_config_loaded_lock);
1322 rc = nodemap_load_entries(env, obj);
1324 nodemap_config_loaded = true;
1325 mutex_unlock(&nodemap_config_loaded_lock);
1329 GOTO(out, ncf = ERR_PTR(rc));
1332 lu_object_get(&obj->do_lu);
1337 nodemap_mgs_ncf = ncf;
1342 EXPORT_SYMBOL(nm_config_file_register_mgs);
1344 struct nm_config_file *nm_config_file_register_tgt(const struct lu_env *env,
1345 struct dt_device *dev,
1346 struct local_oid_storage *los)
1348 struct nm_config_file *ncf;
1349 struct dt_object *config_obj = NULL;
1354 RETURN(ERR_PTR(-ENOMEM));
1356 /* don't load from cache if config already loaded */
1357 mutex_lock(&nodemap_config_loaded_lock);
1358 if (!nodemap_config_loaded) {
1359 config_obj = nodemap_cache_find_create(env, dev, los, 0);
1360 if (IS_ERR(config_obj))
1361 rc = PTR_ERR(config_obj);
1363 rc = nodemap_load_entries(env, config_obj);
1366 nodemap_config_loaded = true;
1368 mutex_unlock(&nodemap_config_loaded_lock);
1372 /* sync on disk caches w/ loaded config in memory, ncf_obj may change */
1374 config_obj = nodemap_save_config_cache(env, dev, los);
1375 if (IS_ERR(config_obj))
1376 GOTO(out_ncf, rc = PTR_ERR(config_obj));
1379 ncf->ncf_obj = config_obj;
1382 mutex_lock(&ncf_list_lock);
1383 list_add(&ncf->ncf_list, &ncf_list_head);
1384 mutex_unlock(&ncf_list_lock);
1389 RETURN(ERR_PTR(rc));
1394 EXPORT_SYMBOL(nm_config_file_register_tgt);
1397 * Deregister a nm_config_file. Should be called by targets during cleanup.
1399 * \param ncf config file to deregister
1401 void nm_config_file_deregister_mgs(const struct lu_env *env,
1402 struct nm_config_file *ncf)
1405 LASSERT(nodemap_mgs_ncf == ncf);
1407 nodemap_mgs_ncf = NULL;
1409 dt_object_put(env, ncf->ncf_obj);
1415 EXPORT_SYMBOL(nm_config_file_deregister_mgs);
1417 void nm_config_file_deregister_tgt(const struct lu_env *env,
1418 struct nm_config_file *ncf)
1425 mutex_lock(&ncf_list_lock);
1426 list_del(&ncf->ncf_list);
1427 mutex_unlock(&ncf_list_lock);
1430 dt_object_put(env, ncf->ncf_obj);
1436 EXPORT_SYMBOL(nm_config_file_deregister_tgt);
1438 int nodemap_process_idx_pages(struct nodemap_config *config, union lu_page *lip,
1439 struct lu_nodemap **recent_nodemap)
1441 struct nodemap_key *key;
1442 union nodemap_rec *rec;
1447 int size = dt_nodemap_features.dif_keysize_max +
1448 dt_nodemap_features.dif_recsize_max;
1451 for (j = 0; j < LU_PAGE_COUNT; j++) {
1452 if (lip->lp_idx.lip_magic != LIP_MAGIC)
1455 /* get and process keys and records from page */
1456 for (k = 0; k < lip->lp_idx.lip_nr; k++) {
1457 entry = lip->lp_idx.lip_entries + k * size;
1458 key = (struct nodemap_key *)entry;
1460 entry += dt_nodemap_features.dif_keysize_max;
1461 rec = (union nodemap_rec *)entry;
1463 rc = nodemap_process_keyrec(config, key, rec,
1474 EXPORT_SYMBOL(nodemap_process_idx_pages);
1476 static int nodemap_page_build(const struct lu_env *env, struct dt_object *obj,
1477 union lu_page *lp, size_t bytes,
1478 const struct dt_it_ops *iops,
1479 struct dt_it *it, __u32 attr, void *arg)
1481 struct idx_info *ii = (struct idx_info *)arg;
1482 struct lu_idxpage *lip = &lp->lp_idx;
1484 size_t size = ii->ii_keysize + ii->ii_recsize;
1488 if (bytes < LIP_HDR_SIZE)
1491 /* initialize the header of the new container */
1492 memset(lip, 0, LIP_HDR_SIZE);
1493 lip->lip_magic = LIP_MAGIC;
1494 bytes -= LIP_HDR_SIZE;
1496 entry = lip->lip_entries;
1498 char *tmp_entry = entry;
1501 enum nodemap_idx_type key_type;
1504 /* fetch 64-bit hash value */
1505 hash = iops->store(env, it);
1506 ii->ii_hash_end = hash;
1508 if (CFS_FAIL_CHECK(OBD_FAIL_OBD_IDX_READ_BREAK)) {
1509 if (lip->lip_nr != 0)
1514 if (lip->lip_nr == 0)
1515 GOTO(out, rc = -EINVAL);
1519 key = iops->key(env, it);
1520 key_type = nodemap_get_key_type((struct nodemap_key *)key);
1521 sub_type = nodemap_get_key_subtype((struct nodemap_key *)key);
1523 /* on the first pass, get only the cluster types. On second
1524 * pass, get all the rest */
1525 if ((ii->ii_attrs == NM_READ_CLUSTERS &&
1526 key_type == NODEMAP_CLUSTER_IDX &&
1527 sub_type == NODEMAP_CLUSTER_REC) ||
1528 (ii->ii_attrs == NM_READ_ATTRIBUTES &&
1529 (key_type != NODEMAP_CLUSTER_IDX ||
1530 sub_type != NODEMAP_CLUSTER_REC) &&
1531 key_type != NODEMAP_EMPTY_IDX)) {
1532 memcpy(tmp_entry, key, ii->ii_keysize);
1533 tmp_entry += ii->ii_keysize;
1535 /* and finally the record */
1536 rc = iops->rec(env, it, (struct dt_rec *)tmp_entry,
1538 if (rc != -ESTALE) {
1542 /* hash/key/record successfully copied! */
1544 if (unlikely(lip->lip_nr == 1 &&
1546 ii->ii_hash_start = hash;
1548 entry = tmp_entry + ii->ii_recsize;
1553 /* move on to the next record */
1555 rc = iops->next(env, it);
1556 } while (rc == -ESTALE);
1558 /* move to second pass */
1559 if (rc > 0 && ii->ii_attrs == NM_READ_CLUSTERS) {
1560 ii->ii_attrs = NM_READ_ATTRIBUTES;
1561 rc = iops->load(env, it, 0);
1563 rc = iops->next(env, it);
1574 if (rc >= 0 && lip->lip_nr > 0)
1575 /* one more container */
1578 /* no more entries */
1579 ii->ii_hash_end = II_END_OFF;
1583 int nodemap_index_read(struct lu_env *env,
1584 struct nm_config_file *ncf,
1585 struct idx_info *ii,
1586 const struct lu_rdpg *rdpg)
1588 struct dt_object *nodemap_idx = ncf->ncf_obj;
1592 ii->ii_keysize = dt_nodemap_features.dif_keysize_max;
1593 ii->ii_recsize = dt_nodemap_features.dif_recsize_max;
1595 dt_read_lock(env, nodemap_idx, 0);
1596 version = dt_version_get(env, nodemap_idx);
1597 if (rdpg->rp_hash != 0 && ii->ii_version != version) {
1598 CDEBUG(D_INFO, "nodemap config changed inflight, old %llu, new %llu\n",
1601 ii->ii_hash_end = 0;
1603 rc = dt_index_walk(env, nodemap_idx, rdpg, nodemap_page_build,
1605 CDEBUG(D_INFO, "walked index, hashend %llx\n", ii->ii_hash_end);
1609 ii->ii_version = version;
1611 dt_read_unlock(env, nodemap_idx);
1614 EXPORT_SYMBOL(nodemap_index_read);
1617 * Returns the current nodemap configuration to MGC by walking the nodemap
1618 * config index and storing it in the response buffer.
1620 * \param req incoming MGS_CONFIG_READ request
1622 * \retval -EINVAL malformed request
1623 * \retval -ENOTCONN client evicted/reconnected already
1624 * \retval -ETIMEDOUT client timeout or network error
1627 int nodemap_get_config_req(struct obd_device *mgs_obd,
1628 struct ptlrpc_request *req)
1630 const struct ptlrpc_bulk_frag_ops *frag_ops = &ptlrpc_bulk_kiov_pin_ops;
1631 struct mgs_config_body *body;
1632 struct mgs_config_res *res;
1633 struct lu_rdpg rdpg;
1634 struct idx_info nodemap_ii;
1635 struct ptlrpc_bulk_desc *desc;
1636 struct tg_export_data *rqexp_ted = &req->rq_export->exp_target_data;
1642 body = req_capsule_client_get(&req->rq_pill, &RMF_MGS_CONFIG_BODY);
1646 if (body->mcb_type != MGS_CFG_T_NODEMAP)
1649 rdpg.rp_count = (body->mcb_units << body->mcb_bits);
1650 rdpg.rp_npages = (rdpg.rp_count + PAGE_SIZE - 1) >>
1652 if (rdpg.rp_npages > PTLRPC_MAX_BRW_PAGES)
1655 CDEBUG(D_INFO, "reading nodemap log, name '%s', size = %u\n",
1656 body->mcb_name, rdpg.rp_count);
1658 /* allocate pages to store the containers */
1659 OBD_ALLOC_PTR_ARRAY(rdpg.rp_pages, rdpg.rp_npages);
1660 if (rdpg.rp_pages == NULL)
1662 for (i = 0; i < rdpg.rp_npages; i++) {
1663 rdpg.rp_pages[i] = alloc_page(GFP_NOFS);
1664 if (rdpg.rp_pages[i] == NULL)
1665 GOTO(out, rc = -ENOMEM);
1668 rdpg.rp_hash = body->mcb_offset;
1669 nodemap_ii.ii_magic = IDX_INFO_MAGIC;
1670 nodemap_ii.ii_flags = II_FL_NOHASH;
1671 nodemap_ii.ii_version = rqexp_ted->ted_nodemap_version;
1672 nodemap_ii.ii_attrs = body->mcb_nm_cur_pass;
1674 bytes = nodemap_index_read(req->rq_svc_thread->t_env,
1675 obd2obt(mgs_obd)->obt_nodemap_config_file,
1676 &nodemap_ii, &rdpg);
1678 GOTO(out, rc = bytes);
1680 rqexp_ted->ted_nodemap_version = nodemap_ii.ii_version;
1682 res = req_capsule_server_get(&req->rq_pill, &RMF_MGS_CONFIG_RES);
1684 GOTO(out, rc = -EINVAL);
1685 res->mcr_offset = nodemap_ii.ii_hash_end;
1686 res->mcr_nm_cur_pass = nodemap_ii.ii_attrs;
1688 page_count = (bytes + PAGE_SIZE - 1) >> PAGE_SHIFT;
1689 LASSERT(page_count <= rdpg.rp_count);
1690 desc = ptlrpc_prep_bulk_exp(req, page_count, 1,
1691 PTLRPC_BULK_PUT_SOURCE,
1692 MGS_BULK_PORTAL, frag_ops);
1694 GOTO(out, rc = -ENOMEM);
1696 for (i = 0; i < page_count && bytes > 0; i++) {
1697 frag_ops->add_kiov_frag(desc, rdpg.rp_pages[i], 0,
1698 min_t(int, bytes, PAGE_SIZE));
1702 rc = target_bulk_io(req->rq_export, desc);
1703 ptlrpc_free_bulk(desc);
1706 if (rdpg.rp_pages != NULL) {
1707 for (i = 0; i < rdpg.rp_npages; i++)
1708 if (rdpg.rp_pages[i] != NULL)
1709 __free_page(rdpg.rp_pages[i]);
1710 OBD_FREE_PTR_ARRAY(rdpg.rp_pages, rdpg.rp_npages);
1714 EXPORT_SYMBOL(nodemap_get_config_req);