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,
144 enum nodemap_idx_type type,
145 unsigned int nm_id, unsigned int rn_id)
147 nk->nk_nodemap_id = cpu_to_le32(nm_idx_set_type(nm_id, type));
148 nk->nk_range_id = cpu_to_le32(rn_id);
151 static int nodemap_range_rec_init(union nodemap_rec *nr,
152 const struct lu_nid_range *range)
154 if (range->rn_netmask) {
155 nr->nrr2.nrr_nid_prefix = range->rn_start;
156 nr->nrr2.nrr_netmask = range->rn_netmask;
158 if (NID_BYTES(&nr->nrr2.nrr_nid_prefix) >
159 sizeof(struct lnet_nid))
164 if (!nid_is_nid4(&range->rn_start) ||
165 !nid_is_nid4(&range->rn_end))
168 nid4[0] = lnet_nid_to_nid4(&range->rn_start);
169 nid4[1] = lnet_nid_to_nid4(&range->rn_end);
170 nr->nrr.nrr_start_nid = cpu_to_le64(nid4[0]);
171 nr->nrr.nrr_end_nid = cpu_to_le64(nid4[1]);
177 static void nodemap_global_key_init(struct nodemap_key *nk)
179 nk->nk_nodemap_id = cpu_to_le32(nm_idx_set_type(0, NODEMAP_GLOBAL_IDX));
183 static void nodemap_global_rec_init(union nodemap_rec *nr, bool active)
185 nr->ngr.ngr_is_active = active;
188 /* should be called with dt_write lock */
189 static void nodemap_inc_version(const struct lu_env *env,
190 struct dt_object *nodemap_idx,
193 u64 ver = dt_version_get(env, nodemap_idx);
194 dt_version_set(env, nodemap_idx, ver + 1, th);
197 enum ncfc_find_create {
201 static struct dt_object *nodemap_cache_find_create(const struct lu_env *env,
202 struct dt_device *dev,
203 struct local_oid_storage *los,
204 enum ncfc_find_create create_new)
207 struct dt_object *root_obj;
208 struct dt_object *nm_obj;
211 rc = dt_root_get(env, dev, &tfid);
213 GOTO(out, nm_obj = ERR_PTR(rc));
215 root_obj = dt_locate(env, dev, &tfid);
216 if (unlikely(IS_ERR(root_obj)))
217 GOTO(out, nm_obj = root_obj);
219 rc = dt_lookup_dir(env, root_obj, LUSTRE_NODEMAP_NAME, &tfid);
222 GOTO(out_root, nm_obj = ERR_PTR(-EROFS));
224 GOTO(out_root, nm_obj = ERR_PTR(rc));
225 } else if (dev->dd_rdonly && create_new == NCFC_CREATE_NEW) {
226 GOTO(out_root, nm_obj = ERR_PTR(-EROFS));
230 /* if loading index fails the first time, create new index */
231 if (create_new == NCFC_CREATE_NEW && rc != -ENOENT) {
232 CDEBUG(D_INFO, "removing old index, creating new one\n");
233 rc = local_object_unlink(env, dev, root_obj,
234 LUSTRE_NODEMAP_NAME);
236 /* XXX not sure the best way to get obd name. */
237 CERROR("cannot destroy nodemap index: rc = %d\n",
239 GOTO(out_root, nm_obj = ERR_PTR(rc));
243 nm_obj = local_index_find_or_create(env, los, root_obj,
245 S_IFREG | S_IRUGO | S_IWUSR,
246 &dt_nodemap_features);
248 GOTO(out_root, nm_obj);
250 if (nm_obj->do_index_ops == NULL) {
251 rc = nm_obj->do_ops->do_index_try(env, nm_obj,
252 &dt_nodemap_features);
253 /* even if loading from tgt fails, connecting to MGS will
257 dt_object_put(env, nm_obj);
259 if (create_new == NCFC_CREATE_NEW)
260 GOTO(out_root, nm_obj = ERR_PTR(rc));
262 CERROR("cannot load nodemap index from disk, creating "
263 "new index: rc = %d\n", rc);
264 create_new = NCFC_CREATE_NEW;
270 dt_object_put(env, root_obj);
275 static int nodemap_idx_insert(const struct lu_env *env,
276 struct dt_object *idx,
277 const struct nodemap_key *nk,
278 const union nodemap_rec *nr)
281 struct dt_device *dev = lu2dt_dev(idx->do_lu.lo_dev);
284 BUILD_BUG_ON(sizeof(union nodemap_rec) != 32);
286 th = dt_trans_create(env, dev);
289 GOTO(out, rc = PTR_ERR(th));
291 rc = dt_declare_insert(env, idx,
292 (const struct dt_rec *)nr,
293 (const struct dt_key *)nk, th);
297 rc = dt_declare_version_set(env, idx, th);
301 rc = dt_trans_start_local(env, dev, th);
305 dt_write_lock(env, idx, 0);
307 rc = dt_insert(env, idx, (const struct dt_rec *)nr,
308 (const struct dt_key *)nk, th);
310 nodemap_inc_version(env, idx, th);
311 dt_write_unlock(env, idx);
313 dt_trans_stop(env, dev, th);
318 static int nodemap_idx_update(const struct lu_env *env,
319 struct dt_object *idx,
320 const struct nodemap_key *nk,
321 const union nodemap_rec *nr)
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_insert(env, idx, (const struct dt_rec *)nr,
337 (const struct dt_key *)nk, th);
341 rc = dt_declare_version_set(env, idx, th);
345 rc = dt_trans_start_local(env, dev, th);
349 dt_write_lock(env, idx, 0);
351 rc = dt_delete(env, idx, (const struct dt_key *)nk, th);
355 rc = dt_insert(env, idx, (const struct dt_rec *)nr,
356 (const struct dt_key *)nk, th);
360 nodemap_inc_version(env, idx, th);
362 dt_write_unlock(env, idx);
364 dt_trans_stop(env, dev, th);
369 static int nodemap_idx_delete(const struct lu_env *env,
370 struct dt_object *idx,
371 const struct nodemap_key *nk,
372 const union nodemap_rec *unused)
375 struct dt_device *dev = lu2dt_dev(idx->do_lu.lo_dev);
378 th = dt_trans_create(env, dev);
381 GOTO(out, rc = PTR_ERR(th));
383 rc = dt_declare_delete(env, idx, (const struct dt_key *)nk, th);
387 rc = dt_declare_version_set(env, idx, th);
391 rc = dt_trans_start_local(env, dev, th);
395 dt_write_lock(env, idx, 0);
397 rc = dt_delete(env, idx, (const struct dt_key *)nk, th);
399 nodemap_inc_version(env, idx, th);
401 dt_write_unlock(env, idx);
403 dt_trans_stop(env, dev, th);
413 static int nodemap_idx_cluster_add_update(const struct lu_nodemap *nodemap,
414 struct dt_object *idx,
415 enum nm_add_update update,
416 enum nodemap_cluster_rec_subid subid)
418 struct nodemap_key nk;
419 union nodemap_rec nr;
426 if (nodemap_mgs_ncf == NULL) {
427 CERROR("cannot add nodemap config to non-existing MGS.\n");
430 idx = nodemap_mgs_ncf->ncf_obj;
433 rc = lu_env_init(&env, LCT_LOCAL);
437 nodemap_cluster_key_init(&nk, nodemap->nm_id, subid);
439 case NODEMAP_CLUSTER_REC:
440 nodemap_cluster_rec_init(&nr, nodemap);
442 case NODEMAP_CLUSTER_ROLES:
443 nodemap_cluster_roles_rec_init(&nr, nodemap);
446 CWARN("%s: unknown subtype %u\n", nodemap->nm_name, subid);
447 GOTO(fini, rc = -EINVAL);
450 if (update == NM_UPDATE)
451 rc = nodemap_idx_update(&env, idx, &nk, &nr);
453 rc = nodemap_idx_insert(&env, idx, &nk, &nr);
460 int nodemap_idx_nodemap_add(const struct lu_nodemap *nodemap)
462 return nodemap_idx_cluster_add_update(nodemap, NULL,
463 NM_ADD, NODEMAP_CLUSTER_REC);
466 int nodemap_idx_nodemap_update(const struct lu_nodemap *nodemap)
468 return nodemap_idx_cluster_add_update(nodemap, NULL,
469 NM_UPDATE, NODEMAP_CLUSTER_REC);
472 int nodemap_idx_nodemap_del(const struct lu_nodemap *nodemap)
475 struct lu_idmap *idmap;
476 struct lu_idmap *temp;
477 struct lu_nid_range *range;
478 struct lu_nid_range *range_temp;
479 struct nodemap_key nk;
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_cluster_key_init(&nk, nodemap->nm_id, NODEMAP_CLUSTER_ROLES);
495 rc2 = nodemap_idx_delete(&env, nodemap_mgs_ncf->ncf_obj, &nk, NULL);
496 if (rc2 < 0 && rc2 != -ENOENT)
499 root = nodemap->nm_fs_to_client_uidmap;
500 rbtree_postorder_for_each_entry_safe(idmap, temp, &root,
502 nodemap_idmap_key_init(&nk, nodemap->nm_id, NODEMAP_UID,
504 rc2 = nodemap_idx_delete(&env, nodemap_mgs_ncf->ncf_obj,
510 root = nodemap->nm_client_to_fs_gidmap;
511 rbtree_postorder_for_each_entry_safe(idmap, temp, &root,
513 nodemap_idmap_key_init(&nk, nodemap->nm_id, NODEMAP_GID,
515 rc2 = nodemap_idx_delete(&env, nodemap_mgs_ncf->ncf_obj,
521 root = nodemap->nm_client_to_fs_projidmap;
522 rbtree_postorder_for_each_entry_safe(idmap, temp, &root,
524 nodemap_idmap_key_init(&nk, nodemap->nm_id, NODEMAP_PROJID,
526 rc2 = nodemap_idx_delete(&env, nodemap_mgs_ncf->ncf_obj,
532 list_for_each_entry_safe(range, range_temp, &nodemap->nm_ranges,
534 enum nodemap_idx_type type;
536 type = range->rn_netmask ? NODEMAP_NID_MASK_IDX :
538 nodemap_range_key_init(&nk, type, nodemap->nm_id, range->rn_id);
539 rc2 = nodemap_idx_delete(&env, nodemap_mgs_ncf->ncf_obj,
545 nodemap_cluster_key_init(&nk, nodemap->nm_id, NODEMAP_CLUSTER_REC);
546 rc2 = nodemap_idx_delete(&env, nodemap_mgs_ncf->ncf_obj, &nk, NULL);
555 int nodemap_idx_cluster_roles_add(const struct lu_nodemap *nodemap)
557 return nodemap_idx_cluster_add_update(nodemap, NULL, NM_ADD,
558 NODEMAP_CLUSTER_ROLES);
561 int nodemap_idx_cluster_roles_update(const struct lu_nodemap *nodemap)
563 return nodemap_idx_cluster_add_update(nodemap, NULL, NM_UPDATE,
564 NODEMAP_CLUSTER_ROLES);
567 int nodemap_idx_cluster_roles_del(const struct lu_nodemap *nodemap)
569 struct nodemap_key nk;
575 if (nodemap_mgs_ncf == NULL) {
576 CERROR("cannot add nodemap config to non-existing MGS.\n");
580 rc = lu_env_init(&env, LCT_LOCAL);
584 nodemap_cluster_key_init(&nk, nodemap->nm_id, NODEMAP_CLUSTER_ROLES);
585 rc = nodemap_idx_delete(&env, nodemap_mgs_ncf->ncf_obj, &nk, NULL);
591 int nodemap_idx_range_add(const struct lu_nid_range *range)
593 struct nodemap_key nk;
594 union nodemap_rec nr;
599 if (nodemap_mgs_ncf == NULL) {
600 CERROR("cannot add nodemap config to non-existing MGS.\n");
604 rc = lu_env_init(&env, LCT_LOCAL);
608 nodemap_range_key_init(&nk, range->rn_netmask ? NODEMAP_NID_MASK_IDX :
610 range->rn_nodemap->nm_id, range->rn_id);
611 rc = nodemap_range_rec_init(&nr, range);
615 rc = nodemap_idx_insert(&env, nodemap_mgs_ncf->ncf_obj, &nk, &nr);
622 int nodemap_idx_range_del(const struct lu_nid_range *range)
624 struct nodemap_key nk;
629 if (nodemap_mgs_ncf == NULL) {
630 CERROR("cannot add nodemap config to non-existing MGS.\n");
634 rc = lu_env_init(&env, LCT_LOCAL);
638 nodemap_range_key_init(&nk, range->rn_netmask ? NODEMAP_NID_MASK_IDX :
640 range->rn_nodemap->nm_id, range->rn_id);
641 rc = nodemap_idx_delete(&env, nodemap_mgs_ncf->ncf_obj, &nk, NULL);
647 int nodemap_idx_idmap_add(const struct lu_nodemap *nodemap,
648 enum nodemap_id_type id_type,
651 struct nodemap_key nk;
652 union nodemap_rec nr;
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]);
667 nodemap_idmap_rec_init(&nr, map[1]);
669 rc = nodemap_idx_insert(&env, nodemap_mgs_ncf->ncf_obj, &nk, &nr);
675 int nodemap_idx_idmap_del(const struct lu_nodemap *nodemap,
676 enum nodemap_id_type id_type,
679 struct nodemap_key nk;
684 if (nodemap_mgs_ncf == NULL) {
685 CERROR("cannot add nodemap config to non-existing MGS.\n");
689 rc = lu_env_init(&env, LCT_LOCAL);
693 nodemap_idmap_key_init(&nk, nodemap->nm_id, id_type, map[0]);
695 rc = nodemap_idx_delete(&env, nodemap_mgs_ncf->ncf_obj, &nk, NULL);
701 static int nodemap_idx_global_add_update(bool value, enum nm_add_update update)
703 struct nodemap_key nk;
704 union nodemap_rec nr;
709 if (nodemap_mgs_ncf == NULL) {
710 CERROR("cannot add nodemap config to non-existing MGS.\n");
714 rc = lu_env_init(&env, LCT_LOCAL);
718 nodemap_global_key_init(&nk);
719 nodemap_global_rec_init(&nr, value);
721 if (update == NM_UPDATE)
722 rc = nodemap_idx_update(&env, nodemap_mgs_ncf->ncf_obj,
725 rc = nodemap_idx_insert(&env, nodemap_mgs_ncf->ncf_obj,
733 int nodemap_idx_nodemap_activate(bool value)
735 return nodemap_idx_global_add_update(value, NM_UPDATE);
738 static enum nodemap_idx_type nodemap_get_key_type(const struct nodemap_key *key)
742 nodemap_id = le32_to_cpu(key->nk_nodemap_id);
743 return nm_idx_get_type(nodemap_id);
746 static int nodemap_get_key_subtype(const struct nodemap_key *key)
748 enum nodemap_idx_type type = nodemap_get_key_type(key);
750 return type == NODEMAP_CLUSTER_IDX ? key->nk_cluster_subid : -1;
753 static int nodemap_cluster_rec_helper(struct nodemap_config *config,
755 const union nodemap_rec *rec,
756 struct lu_nodemap **recent_nodemap)
758 struct lu_nodemap *nodemap, *old_nm;
759 enum nm_flag_bits flags;
760 enum nm_flag2_bits flags2;
762 nodemap = cfs_hash_lookup(config->nmc_nodemap_hash, rec->ncr.ncr_name);
763 if (nodemap == NULL) {
764 if (nodemap_id == LUSTRE_NODEMAP_DEFAULT_ID)
765 nodemap = nodemap_create(rec->ncr.ncr_name, config, 1);
767 nodemap = nodemap_create(rec->ncr.ncr_name, config, 0);
769 return PTR_ERR(nodemap);
771 /* we need to override the local ID with the saved ID */
772 nodemap->nm_id = nodemap_id;
773 if (nodemap_id > config->nmc_nodemap_highest_id)
774 config->nmc_nodemap_highest_id = nodemap_id;
776 } else if (nodemap->nm_id != nodemap_id) {
777 nodemap_putref(nodemap);
781 nodemap->nm_squash_uid = le32_to_cpu(rec->ncr.ncr_squash_uid);
782 nodemap->nm_squash_gid = le32_to_cpu(rec->ncr.ncr_squash_gid);
783 nodemap->nm_squash_projid = le32_to_cpu(rec->ncr.ncr_squash_projid);
785 flags = rec->ncr.ncr_flags;
786 nodemap->nmf_allow_root_access = flags & NM_FL_ALLOW_ROOT_ACCESS;
787 nodemap->nmf_trust_client_ids = flags & NM_FL_TRUST_CLIENT_IDS;
788 nodemap->nmf_deny_unknown = flags & NM_FL_DENY_UNKNOWN;
789 nodemap->nmf_map_mode =
790 (flags & NM_FL_MAP_UID ? NODEMAP_MAP_UID : 0) |
791 (flags & NM_FL_MAP_GID ? NODEMAP_MAP_GID : 0) |
792 (flags & NM_FL_MAP_PROJID ? NODEMAP_MAP_PROJID : 0);
793 if (nodemap->nmf_map_mode == NODEMAP_MAP_BOTH_LEGACY)
794 nodemap->nmf_map_mode = NODEMAP_MAP_BOTH;
795 nodemap->nmf_enable_audit = flags & NM_FL_ENABLE_AUDIT;
796 nodemap->nmf_forbid_encryption = flags & NM_FL_FORBID_ENCRYPT;
797 flags2 = rec->ncr.ncr_flags2;
798 nodemap->nmf_readonly_mount = flags2 & NM_FL2_READONLY_MOUNT;
799 /* by default, and in the absence of cluster_roles, grant all roles */
800 nodemap->nmf_rbac = NODEMAP_RBAC_ALL;
802 /* The fileset should be saved otherwise it will be empty
803 * every time in case of "NODEMAP_CLUSTER_IDX".
805 mutex_lock(&active_config_lock);
806 old_nm = nodemap_lookup(rec->ncr.ncr_name);
807 if (!IS_ERR(old_nm) && old_nm->nm_fileset[0] != '\0')
808 strscpy(nodemap->nm_fileset, old_nm->nm_fileset,
809 sizeof(nodemap->nm_fileset));
810 mutex_unlock(&active_config_lock);
812 nodemap_putref(old_nm);
814 if (*recent_nodemap == NULL) {
815 *recent_nodemap = nodemap;
816 INIT_LIST_HEAD(&nodemap->nm_list);
818 list_add(&nodemap->nm_list, &(*recent_nodemap)->nm_list);
820 nodemap_putref(nodemap);
825 static int nodemap_cluster_roles_helper(struct lu_nodemap *nodemap,
826 const union nodemap_rec *rec)
828 nodemap->nmf_rbac = le64_to_cpu(rec->ncrr.ncrr_roles);
834 * Process a key/rec pair and modify the new configuration.
836 * \param config configuration to update with this key/rec data
837 * \param key key of the record that was loaded
838 * \param rec record that was loaded
839 * \param recent_nodemap last referenced nodemap
840 * \retval type of record processed, see enum #nodemap_idx_type
841 * \retval -ENOENT range or map loaded before nodemap record
842 * \retval -EINVAL duplicate nodemap cluster records found with
843 * different IDs, or nodemap has invalid name
846 static int nodemap_process_keyrec(struct nodemap_config *config,
847 const struct nodemap_key *key,
848 const union nodemap_rec *rec,
849 struct lu_nodemap **recent_nodemap)
851 struct lu_nodemap *nodemap = NULL;
852 enum nodemap_idx_type type;
853 enum nodemap_id_type id_type;
854 struct lnet_nid nid[2];
862 BUILD_BUG_ON(sizeof(union nodemap_rec) != 32);
864 nodemap_id = le32_to_cpu(key->nk_nodemap_id);
865 type = nodemap_get_key_type(key);
866 subtype = nodemap_get_key_subtype(key);
867 nodemap_id = nm_idx_set_type(nodemap_id, 0);
869 CDEBUG(D_INFO, "found config entry, nm_id %d type %d subtype %d\n",
870 nodemap_id, type, subtype);
872 /* find the correct nodemap in the load list */
873 if (type == NODEMAP_RANGE_IDX || type == NODEMAP_NID_MASK_IDX ||
874 type == NODEMAP_UIDMAP_IDX || type == NODEMAP_GIDMAP_IDX ||
875 type == NODEMAP_PROJIDMAP_IDX ||
876 (type == NODEMAP_CLUSTER_IDX && subtype != NODEMAP_CLUSTER_REC)) {
877 struct lu_nodemap *tmp = NULL;
879 nodemap = *recent_nodemap;
882 GOTO(out, rc = -ENOENT);
884 if (nodemap->nm_id != nodemap_id) {
885 list_for_each_entry(tmp, &nodemap->nm_list, nm_list)
886 if (tmp->nm_id == nodemap_id) {
891 if (nodemap->nm_id != nodemap_id)
892 GOTO(out, rc = -ENOENT);
895 /* update most recently used nodemap if necessay */
896 if (nodemap != *recent_nodemap)
897 *recent_nodemap = nodemap;
901 case NODEMAP_EMPTY_IDX:
903 CWARN("Found nodemap config record without type field, "
904 " nodemap_id=%d. nodemap config file corrupt?\n",
907 case NODEMAP_CLUSTER_IDX:
908 switch (nodemap_get_key_subtype(key)) {
909 case NODEMAP_CLUSTER_REC:
910 rc = nodemap_cluster_rec_helper(config, nodemap_id, rec,
915 case NODEMAP_CLUSTER_ROLES:
916 rc = nodemap_cluster_roles_helper(nodemap, rec);
921 CWARN("%s: ignoring keyrec of type %d with subtype %u\n",
922 nodemap->nm_name, NODEMAP_CLUSTER_IDX,
923 nodemap_get_key_subtype(key));
927 case NODEMAP_RANGE_IDX:
928 lnet_nid4_to_nid(le64_to_cpu(rec->nrr.nrr_start_nid), &nid[0]);
929 lnet_nid4_to_nid(le64_to_cpu(rec->nrr.nrr_end_nid), &nid[1]);
930 rc = nodemap_add_range_helper(config, nodemap, nid, 0,
931 le32_to_cpu(key->nk_range_id));
935 case NODEMAP_NID_MASK_IDX:
936 nid[0] = rec->nrr2.nrr_nid_prefix;
937 nid[1] = rec->nrr2.nrr_nid_prefix;
938 rc = nodemap_add_range_helper(config, nodemap, nid,
939 rec->nrr2.nrr_netmask,
940 le32_to_cpu(key->nk_range_id));
944 case NODEMAP_UIDMAP_IDX:
945 case NODEMAP_GIDMAP_IDX:
946 case NODEMAP_PROJIDMAP_IDX:
947 map[0] = le32_to_cpu(key->nk_id_client);
948 map[1] = le32_to_cpu(rec->nir.nir_id_fs);
950 if (type == NODEMAP_UIDMAP_IDX)
951 id_type = NODEMAP_UID;
952 else if (type == NODEMAP_GIDMAP_IDX)
953 id_type = NODEMAP_GID;
954 else if (type == NODEMAP_PROJIDMAP_IDX)
955 id_type = NODEMAP_PROJID;
957 GOTO(out, rc = -EINVAL);
959 rc = nodemap_add_idmap_helper(nodemap, id_type, map);
963 case NODEMAP_GLOBAL_IDX:
964 switch (key->nk_unused) {
966 config->nmc_nodemap_is_active = rec->ngr.ngr_is_active;
969 CWARN("%s: ignoring keyrec of type %d with subtype %u\n",
971 (*recent_nodemap)->nm_name : "nodemap",
972 NODEMAP_GLOBAL_IDX, key->nk_unused);
977 CWARN("%s: ignoring key %u:%u for unknown type %u\n",
978 recent_nodemap ? (*recent_nodemap)->nm_name : "nodemap",
979 key->nk_nodemap_id & 0x0FFFFFFF, key->nk_unused, type);
991 enum nm_config_passes {
992 NM_READ_CLUSTERS = 0,
993 NM_READ_ATTRIBUTES = 1,
996 static int nodemap_load_entries(const struct lu_env *env,
997 struct dt_object *nodemap_idx)
999 const struct dt_it_ops *iops;
1001 struct lu_nodemap *recent_nodemap = NULL;
1002 struct nodemap_config *new_config = NULL;
1004 bool activate_nodemap = false;
1005 bool loaded_global_idx = false;
1006 enum nm_config_passes cur_pass = NM_READ_CLUSTERS;
1011 iops = &nodemap_idx->do_index_ops->dio_it;
1013 dt_read_lock(env, nodemap_idx, 0);
1014 it = iops->init(env, nodemap_idx, 0);
1016 GOTO(out, rc = PTR_ERR(it));
1018 rc = iops->load(env, it, hash);
1020 GOTO(out_iops_fini, rc);
1022 /* rc == 0 means we need to advance to record */
1024 rc = iops->next(env, it);
1027 GOTO(out_iops_put, rc);
1028 /* rc > 0 is eof, will be checked in while below */
1030 /* rc == 1, we found initial record and can process below */
1034 new_config = nodemap_config_alloc();
1035 if (IS_ERR(new_config)) {
1036 rc = PTR_ERR(new_config);
1038 GOTO(out_iops_put, rc);
1041 /* rc > 0 is eof, check initial iops->next here as well */
1043 struct nodemap_key *key;
1044 union nodemap_rec rec;
1045 enum nodemap_idx_type key_type;
1048 key = (struct nodemap_key *)iops->key(env, it);
1049 key_type = nodemap_get_key_type((struct nodemap_key *)key);
1050 sub_type = nodemap_get_key_subtype((struct nodemap_key *)key);
1051 if ((cur_pass == NM_READ_CLUSTERS &&
1052 key_type == NODEMAP_CLUSTER_IDX &&
1053 sub_type == NODEMAP_CLUSTER_REC) ||
1054 (cur_pass == NM_READ_ATTRIBUTES &&
1055 (key_type != NODEMAP_CLUSTER_IDX ||
1056 sub_type != NODEMAP_CLUSTER_REC) &&
1057 key_type != NODEMAP_EMPTY_IDX)) {
1058 rc = iops->rec(env, it, (struct dt_rec *)&rec, 0);
1059 if (rc != -ESTALE) {
1061 GOTO(out_nodemap_config, rc);
1062 rc = nodemap_process_keyrec(new_config, key, &rec,
1065 GOTO(out_nodemap_config, rc);
1066 if (rc == NODEMAP_GLOBAL_IDX)
1067 loaded_global_idx = true;
1072 rc = iops->next(env, it);
1073 while (rc == -ESTALE);
1075 /* move to second pass */
1076 if (rc > 0 && cur_pass == NM_READ_CLUSTERS) {
1077 cur_pass = NM_READ_ATTRIBUTES;
1078 rc = iops->load(env, it, 0);
1080 rc = iops->next(env, it);
1093 nodemap_config_dealloc(new_config);
1095 /* creating new default needs to be done outside dt read lock */
1096 activate_nodemap = true;
1100 iops->fini(env, it);
1102 dt_read_unlock(env, nodemap_idx);
1105 CWARN("%s: failed to load nodemap configuration: rc = %d\n",
1106 nodemap_idx->do_lu.lo_dev->ld_obd->obd_name, rc);
1108 if (!activate_nodemap)
1111 if (new_config->nmc_default_nodemap == NULL) {
1112 /* new MGS won't have a default nm on disk, so create it here */
1113 struct lu_nodemap *nodemap =
1114 nodemap_create(DEFAULT_NODEMAP, new_config, 1);
1115 if (IS_ERR(nodemap)) {
1116 rc = PTR_ERR(nodemap);
1118 rc = nodemap_idx_cluster_add_update(
1119 new_config->nmc_default_nodemap,
1121 NM_ADD, NODEMAP_CLUSTER_REC);
1122 nodemap_putref(new_config->nmc_default_nodemap);
1126 /* new nodemap config won't have an active/inactive record */
1127 if (rc == 0 && loaded_global_idx == false) {
1128 struct nodemap_key nk;
1129 union nodemap_rec nr;
1131 nodemap_global_key_init(&nk);
1132 nodemap_global_rec_init(&nr, false);
1133 rc = nodemap_idx_insert(env, nodemap_idx, &nk, &nr);
1137 nodemap_config_set_active(new_config);
1139 nodemap_config_dealloc(new_config);
1145 * Step through active config and write to disk.
1147 static struct dt_object *
1148 nodemap_save_config_cache(const struct lu_env *env,
1149 struct dt_device *dev,
1150 struct local_oid_storage *los)
1152 struct dt_object *o;
1153 struct lu_nodemap *nodemap;
1154 struct lu_nodemap *nm_tmp;
1155 struct lu_nid_range *range;
1156 struct lu_nid_range *range_temp;
1157 struct lu_idmap *idmap;
1158 struct lu_idmap *id_tmp;
1159 struct rb_root root;
1160 struct nodemap_key nk;
1161 union nodemap_rec nr;
1162 LIST_HEAD(nodemap_list_head);
1167 /* create a new index file to fill with active config */
1168 o = nodemap_cache_find_create(env, dev, los, NCFC_CREATE_NEW);
1172 mutex_lock(&active_config_lock);
1174 /* convert hash to list so we don't spin */
1175 cfs_hash_for_each_safe(active_config->nmc_nodemap_hash,
1176 nm_hash_list_cb, &nodemap_list_head);
1178 list_for_each_entry_safe(nodemap, nm_tmp, &nodemap_list_head, nm_list) {
1179 nodemap_cluster_key_init(&nk, nodemap->nm_id,
1180 NODEMAP_CLUSTER_REC);
1181 nodemap_cluster_rec_init(&nr, nodemap);
1183 rc2 = nodemap_idx_insert(env, o, &nk, &nr);
1189 /* only insert NODEMAP_CLUSTER_ROLES idx in saved config cache
1190 * if nmf_rbac is not default value NODEMAP_RBAC_ALL
1192 if (nodemap->nmf_rbac != NODEMAP_RBAC_ALL) {
1193 nodemap_cluster_key_init(&nk, nodemap->nm_id,
1194 NODEMAP_CLUSTER_ROLES);
1195 nodemap_cluster_roles_rec_init(&nr, nodemap);
1196 rc2 = nodemap_idx_insert(env, o, &nk, &nr);
1201 down_read(&active_config->nmc_range_tree_lock);
1202 list_for_each_entry_safe(range, range_temp, &nodemap->nm_ranges,
1204 enum nodemap_idx_type type;
1206 type = range->rn_netmask ? NODEMAP_NID_MASK_IDX :
1208 nodemap_range_key_init(&nk, type, nodemap->nm_id,
1210 rc2 = nodemap_range_rec_init(&nr, range);
1215 rc2 = nodemap_idx_insert(env, o, &nk, &nr);
1219 up_read(&active_config->nmc_range_tree_lock);
1221 /* we don't need to take nm_idmap_lock because active config
1222 * lock prevents changes from happening to nodemaps
1224 root = nodemap->nm_client_to_fs_uidmap;
1225 rbtree_postorder_for_each_entry_safe(idmap, id_tmp, &root,
1227 nodemap_idmap_key_init(&nk, nodemap->nm_id, NODEMAP_UID,
1229 nodemap_idmap_rec_init(&nr, idmap->id_fs);
1230 rc2 = nodemap_idx_insert(env, o, &nk, &nr);
1235 root = nodemap->nm_client_to_fs_gidmap;
1236 rbtree_postorder_for_each_entry_safe(idmap, id_tmp, &root,
1238 nodemap_idmap_key_init(&nk, nodemap->nm_id, NODEMAP_GID,
1240 nodemap_idmap_rec_init(&nr, idmap->id_fs);
1241 rc2 = nodemap_idx_insert(env, o, &nk, &nr);
1246 root = nodemap->nm_client_to_fs_projidmap;
1247 rbtree_postorder_for_each_entry_safe(idmap, id_tmp, &root,
1249 nodemap_idmap_key_init(&nk, nodemap->nm_id,
1252 nodemap_idmap_rec_init(&nr, idmap->id_fs);
1253 rc2 = nodemap_idx_insert(env, o, &nk, &nr);
1258 nodemap_global_key_init(&nk);
1259 nodemap_global_rec_init(&nr, active_config->nmc_nodemap_is_active);
1260 rc2 = nodemap_idx_insert(env, o, &nk, &nr);
1264 mutex_unlock(&active_config_lock);
1267 dt_object_put(env, o);
1274 static void nodemap_save_all_caches(void)
1276 struct nm_config_file *ncf;
1280 /* recreating nodemap cache requires fld_thread_key be in env */
1281 rc = lu_env_init(&env, LCT_MD_THREAD | LCT_DT_THREAD | LCT_MG_THREAD);
1283 CWARN("cannot init env for nodemap config: rc = %d\n", rc);
1287 mutex_lock(&ncf_list_lock);
1288 list_for_each_entry(ncf, &ncf_list_head, ncf_list) {
1289 struct dt_device *dev = lu2dt_dev(ncf->ncf_obj->do_lu.lo_dev);
1290 struct obd_device *obd = ncf->ncf_obj->do_lu.lo_dev->ld_obd;
1291 struct dt_object *o;
1293 /* put current config file so save conf can rewrite it */
1294 dt_object_put_nocache(&env, ncf->ncf_obj);
1295 ncf->ncf_obj = NULL;
1297 o = nodemap_save_config_cache(&env, dev, ncf->ncf_los);
1299 CWARN("%s: error writing to nodemap config: rc = %d\n",
1304 mutex_unlock(&ncf_list_lock);
1309 /* tracks if config still needs to be loaded, either from disk or network */
1310 static bool nodemap_config_loaded;
1311 static DEFINE_MUTEX(nodemap_config_loaded_lock);
1314 * Ensures that configs loaded over the wire are prioritized over those loaded
1317 * \param config config to set as the active config
1319 void nodemap_config_set_active_mgc(struct nodemap_config *config)
1321 mutex_lock(&nodemap_config_loaded_lock);
1322 nodemap_config_set_active(config);
1323 nodemap_config_loaded = true;
1324 nodemap_save_all_caches();
1325 mutex_unlock(&nodemap_config_loaded_lock);
1327 EXPORT_SYMBOL(nodemap_config_set_active_mgc);
1330 * Register a dt_object representing the config index file. This should be
1331 * called by targets in order to load the nodemap configuration from disk. The
1332 * dt_object should be created with local_index_find_or_create and the index
1333 * features should be enabled with do_index_try.
1335 * \param obj dt_object returned by local_index_find_or_create
1337 * \retval on success: nm_config_file handle for later deregistration
1338 * \retval -ENOMEM memory allocation failure
1339 * \retval -ENOENT error loading nodemap config
1340 * \retval -EINVAL error loading nodemap config
1341 * \retval -EEXIST nodemap config already registered for MGS
1343 struct nm_config_file *nm_config_file_register_mgs(const struct lu_env *env,
1344 struct dt_object *obj,
1345 struct local_oid_storage *los)
1347 struct nm_config_file *ncf;
1351 if (nodemap_mgs_ncf != NULL)
1352 GOTO(out, ncf = ERR_PTR(-EEXIST));
1356 GOTO(out, ncf = ERR_PTR(-ENOMEM));
1358 /* if loading from cache, prevent activation of MGS config until cache
1359 * loading is done, so disk config is overwritten by MGS config.
1361 mutex_lock(&nodemap_config_loaded_lock);
1362 rc = nodemap_load_entries(env, obj);
1364 nodemap_config_loaded = true;
1365 mutex_unlock(&nodemap_config_loaded_lock);
1369 GOTO(out, ncf = ERR_PTR(rc));
1372 lu_object_get(&obj->do_lu);
1377 nodemap_mgs_ncf = ncf;
1382 EXPORT_SYMBOL(nm_config_file_register_mgs);
1384 struct nm_config_file *nm_config_file_register_tgt(const struct lu_env *env,
1385 struct dt_device *dev,
1386 struct local_oid_storage *los)
1388 struct nm_config_file *ncf;
1389 struct dt_object *config_obj = NULL;
1394 RETURN(ERR_PTR(-ENOMEM));
1396 /* don't load from cache if config already loaded */
1397 mutex_lock(&nodemap_config_loaded_lock);
1398 if (!nodemap_config_loaded) {
1399 config_obj = nodemap_cache_find_create(env, dev, los, 0);
1400 if (IS_ERR(config_obj))
1401 rc = PTR_ERR(config_obj);
1403 rc = nodemap_load_entries(env, config_obj);
1406 nodemap_config_loaded = true;
1408 mutex_unlock(&nodemap_config_loaded_lock);
1412 /* sync on disk caches w/ loaded config in memory, ncf_obj may change */
1414 config_obj = nodemap_save_config_cache(env, dev, los);
1415 if (IS_ERR(config_obj))
1416 GOTO(out_ncf, rc = PTR_ERR(config_obj));
1419 ncf->ncf_obj = config_obj;
1422 mutex_lock(&ncf_list_lock);
1423 list_add(&ncf->ncf_list, &ncf_list_head);
1424 mutex_unlock(&ncf_list_lock);
1429 RETURN(ERR_PTR(rc));
1434 EXPORT_SYMBOL(nm_config_file_register_tgt);
1437 * Deregister a nm_config_file. Should be called by targets during cleanup.
1439 * \param ncf config file to deregister
1441 void nm_config_file_deregister_mgs(const struct lu_env *env,
1442 struct nm_config_file *ncf)
1445 LASSERT(nodemap_mgs_ncf == ncf);
1447 nodemap_mgs_ncf = NULL;
1449 dt_object_put(env, ncf->ncf_obj);
1455 EXPORT_SYMBOL(nm_config_file_deregister_mgs);
1457 void nm_config_file_deregister_tgt(const struct lu_env *env,
1458 struct nm_config_file *ncf)
1465 mutex_lock(&ncf_list_lock);
1466 list_del(&ncf->ncf_list);
1467 mutex_unlock(&ncf_list_lock);
1470 dt_object_put(env, ncf->ncf_obj);
1476 EXPORT_SYMBOL(nm_config_file_deregister_tgt);
1478 int nodemap_process_idx_pages(struct nodemap_config *config, union lu_page *lip,
1479 struct lu_nodemap **recent_nodemap)
1481 struct nodemap_key *key;
1482 union nodemap_rec *rec;
1487 int size = dt_nodemap_features.dif_keysize_max +
1488 dt_nodemap_features.dif_recsize_max;
1491 for (j = 0; j < LU_PAGE_COUNT; j++) {
1492 if (lip->lp_idx.lip_magic != LIP_MAGIC)
1495 /* get and process keys and records from page */
1496 for (k = 0; k < lip->lp_idx.lip_nr; k++) {
1497 entry = lip->lp_idx.lip_entries + k * size;
1498 key = (struct nodemap_key *)entry;
1500 entry += dt_nodemap_features.dif_keysize_max;
1501 rec = (union nodemap_rec *)entry;
1503 rc = nodemap_process_keyrec(config, key, rec,
1514 EXPORT_SYMBOL(nodemap_process_idx_pages);
1516 static int nodemap_page_build(const struct lu_env *env, struct dt_object *obj,
1517 union lu_page *lp, size_t bytes,
1518 const struct dt_it_ops *iops,
1519 struct dt_it *it, __u32 attr, void *arg)
1521 struct idx_info *ii = (struct idx_info *)arg;
1522 struct lu_idxpage *lip = &lp->lp_idx;
1524 size_t size = ii->ii_keysize + ii->ii_recsize;
1528 if (bytes < LIP_HDR_SIZE)
1531 /* initialize the header of the new container */
1532 memset(lip, 0, LIP_HDR_SIZE);
1533 lip->lip_magic = LIP_MAGIC;
1534 bytes -= LIP_HDR_SIZE;
1536 entry = lip->lip_entries;
1538 char *tmp_entry = entry;
1541 enum nodemap_idx_type key_type;
1544 /* fetch 64-bit hash value */
1545 hash = iops->store(env, it);
1546 ii->ii_hash_end = hash;
1548 if (CFS_FAIL_CHECK(OBD_FAIL_OBD_IDX_READ_BREAK)) {
1549 if (lip->lip_nr != 0)
1554 if (lip->lip_nr == 0)
1555 GOTO(out, rc = -EINVAL);
1559 key = iops->key(env, it);
1560 key_type = nodemap_get_key_type((struct nodemap_key *)key);
1561 sub_type = nodemap_get_key_subtype((struct nodemap_key *)key);
1563 /* on the first pass, get only the cluster types. On second
1564 * pass, get all the rest */
1565 if ((ii->ii_attrs == NM_READ_CLUSTERS &&
1566 key_type == NODEMAP_CLUSTER_IDX &&
1567 sub_type == NODEMAP_CLUSTER_REC) ||
1568 (ii->ii_attrs == NM_READ_ATTRIBUTES &&
1569 (key_type != NODEMAP_CLUSTER_IDX ||
1570 sub_type != NODEMAP_CLUSTER_REC) &&
1571 key_type != NODEMAP_EMPTY_IDX)) {
1572 memcpy(tmp_entry, key, ii->ii_keysize);
1573 tmp_entry += ii->ii_keysize;
1575 /* and finally the record */
1576 rc = iops->rec(env, it, (struct dt_rec *)tmp_entry,
1578 if (rc != -ESTALE) {
1582 /* hash/key/record successfully copied! */
1584 if (unlikely(lip->lip_nr == 1 &&
1586 ii->ii_hash_start = hash;
1588 entry = tmp_entry + ii->ii_recsize;
1593 /* move on to the next record */
1595 rc = iops->next(env, it);
1596 } while (rc == -ESTALE);
1598 /* move to second pass */
1599 if (rc > 0 && ii->ii_attrs == NM_READ_CLUSTERS) {
1600 ii->ii_attrs = NM_READ_ATTRIBUTES;
1601 rc = iops->load(env, it, 0);
1603 rc = iops->next(env, it);
1614 if (rc >= 0 && lip->lip_nr > 0)
1615 /* one more container */
1618 /* no more entries */
1619 ii->ii_hash_end = II_END_OFF;
1623 int nodemap_index_read(struct lu_env *env, struct nm_config_file *ncf,
1624 struct idx_info *ii, const struct lu_rdpg *rdpg)
1626 struct dt_object *nodemap_idx = ncf->ncf_obj;
1630 ii->ii_keysize = dt_nodemap_features.dif_keysize_max;
1631 ii->ii_recsize = dt_nodemap_features.dif_recsize_max;
1633 dt_read_lock(env, nodemap_idx, 0);
1634 version = dt_version_get(env, nodemap_idx);
1635 if (rdpg->rp_hash != 0 && ii->ii_version != version) {
1636 CDEBUG(D_INFO, "nodemap config changed inflight, old %llu, new %llu\n",
1639 ii->ii_hash_end = 0;
1641 rc = dt_index_walk(env, nodemap_idx, rdpg, nodemap_page_build,
1643 CDEBUG(D_INFO, "walked index, hashend %llx\n", ii->ii_hash_end);
1647 ii->ii_version = version;
1650 * For partial lu_idxpage filling of the end system page,
1651 * init the header of the remain lu_idxpages.
1654 dt_index_page_adjust(rdpg->rp_pages, rdpg->rp_npages,
1657 dt_read_unlock(env, nodemap_idx);
1660 EXPORT_SYMBOL(nodemap_index_read);
1663 * Returns the current nodemap configuration to MGC by walking the nodemap
1664 * config index and storing it in the response buffer.
1666 * \param req incoming MGS_CONFIG_READ request
1668 * \retval -EINVAL malformed request
1669 * \retval -ENOTCONN client evicted/reconnected already
1670 * \retval -ETIMEDOUT client timeout or network error
1673 int nodemap_get_config_req(struct obd_device *mgs_obd,
1674 struct ptlrpc_request *req)
1676 const struct ptlrpc_bulk_frag_ops *frag_ops = &ptlrpc_bulk_kiov_pin_ops;
1677 struct mgs_config_body *body;
1678 struct mgs_config_res *res;
1679 struct lu_rdpg rdpg;
1680 struct idx_info nodemap_ii;
1681 struct ptlrpc_bulk_desc *desc;
1682 struct tg_export_data *rqexp_ted = &req->rq_export->exp_target_data;
1688 body = req_capsule_client_get(&req->rq_pill, &RMF_MGS_CONFIG_BODY);
1692 if (body->mcb_type != MGS_CFG_T_NODEMAP)
1695 rdpg.rp_count = (body->mcb_units << body->mcb_bits);
1696 rdpg.rp_npages = (rdpg.rp_count + PAGE_SIZE - 1) >>
1698 if (rdpg.rp_npages > PTLRPC_MAX_BRW_PAGES)
1701 CDEBUG(D_INFO, "reading nodemap log, name '%s', size = %u\n",
1702 body->mcb_name, rdpg.rp_count);
1704 /* allocate pages to store the containers */
1705 OBD_ALLOC_PTR_ARRAY(rdpg.rp_pages, rdpg.rp_npages);
1706 if (rdpg.rp_pages == NULL)
1708 for (i = 0; i < rdpg.rp_npages; i++) {
1709 rdpg.rp_pages[i] = alloc_page(GFP_NOFS);
1710 if (rdpg.rp_pages[i] == NULL)
1711 GOTO(out, rc = -ENOMEM);
1714 rdpg.rp_hash = body->mcb_offset;
1715 nodemap_ii.ii_magic = IDX_INFO_MAGIC;
1716 nodemap_ii.ii_flags = II_FL_NOHASH;
1717 nodemap_ii.ii_version = rqexp_ted->ted_nodemap_version;
1718 nodemap_ii.ii_attrs = body->mcb_nm_cur_pass;
1719 nodemap_ii.ii_count = 0;
1721 bytes = nodemap_index_read(req->rq_svc_thread->t_env,
1722 obd2obt(mgs_obd)->obt_nodemap_config_file,
1723 &nodemap_ii, &rdpg);
1725 GOTO(out, rc = bytes);
1727 rqexp_ted->ted_nodemap_version = nodemap_ii.ii_version;
1729 res = req_capsule_server_get(&req->rq_pill, &RMF_MGS_CONFIG_RES);
1731 GOTO(out, rc = -EINVAL);
1732 res->mcr_offset = nodemap_ii.ii_hash_end;
1733 res->mcr_nm_cur_pass = nodemap_ii.ii_attrs;
1735 page_count = (bytes + PAGE_SIZE - 1) >> PAGE_SHIFT;
1736 LASSERT(page_count <= rdpg.rp_count);
1737 desc = ptlrpc_prep_bulk_exp(req, page_count, 1,
1738 PTLRPC_BULK_PUT_SOURCE,
1739 MGS_BULK_PORTAL, frag_ops);
1741 GOTO(out, rc = -ENOMEM);
1743 for (i = 0; i < page_count && bytes > 0; i++) {
1744 frag_ops->add_kiov_frag(desc, rdpg.rp_pages[i], 0,
1745 min_t(int, bytes, PAGE_SIZE));
1749 rc = target_bulk_io(req->rq_export, desc);
1750 ptlrpc_free_bulk(desc);
1753 if (rdpg.rp_pages != NULL) {
1754 for (i = 0; i < rdpg.rp_npages; i++)
1755 if (rdpg.rp_pages[i] != NULL)
1756 __free_page(rdpg.rp_pages[i]);
1757 OBD_FREE_PTR_ARRAY(rdpg.rp_pages, rdpg.rp_npages);
1761 EXPORT_SYMBOL(nodemap_get_config_req);