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.sun.com/software/products/lustre/docs/GPLv2.pdf
20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
21 * CA 95054 USA or visit www.sun.com if you need additional information or
27 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
30 * Copyright (c) 2011, 2013, Intel Corporation.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
37 #ifndef LOV_INTERNAL_H
38 #define LOV_INTERNAL_H
40 #include <obd_class.h>
42 #include <lustre/lustre_user.h>
44 #define pool_tgt_size(p) ((p)->pool_obds.op_size)
45 #define pool_tgt_count(p) ((p)->pool_obds.op_count)
46 #define pool_tgt_array(p) ((p)->pool_obds.op_array)
47 #define pool_tgt_rw_sem(p) ((p)->pool_obds.op_rw_sem)
50 char pool_name[LOV_MAXPOOLNAME + 1];
51 struct ost_pool pool_obds;
52 atomic_t pool_refcount;
53 cfs_hlist_node_t pool_hash; /* access by poolname */
54 struct list_head pool_list; /* serial access */
55 struct proc_dir_entry *pool_proc_entry;
56 struct obd_device *pool_lobd; /* owner */
60 struct obd_info rq_oi;
61 struct lov_request_set *rq_rqset;
63 int rq_idx; /* index in lov->tgts array */
64 int rq_stripe; /* stripe number */
69 struct lov_request_set {
70 struct obd_info *set_oi;
71 cfs_atomic_t set_refcount;
72 struct obd_export *set_exp;
73 /* XXX: There is @set_exp already, however obd_statfs gets
75 struct obd_device *set_obd;
77 cfs_atomic_t set_completes;
78 cfs_atomic_t set_success;
79 cfs_atomic_t set_finish_checked;
80 struct llog_cookie *set_cookies;
82 wait_queue_head_t set_waitq;
85 extern struct kmem_cache *lov_oinfo_slab;
87 void lov_finish_set(struct lov_request_set *set);
89 static inline void lov_put_reqset(struct lov_request_set *set)
91 if (cfs_atomic_dec_and_test(&set->set_refcount))
95 #define lov_uuid2str(lv, index) \
96 (char *)((lv)->lov_tgts[index]->ltd_uuid.uuid)
99 void lov_merge_attrs(struct obdo *tgt, struct obdo *src, obd_valid valid,
100 struct lov_stripe_md *lsm, int stripeno, int *set);
101 int lov_adjust_kms(struct obd_export *exp, struct lov_stripe_md *lsm,
102 obd_off size, int shrink);
103 int lov_merge_lvb_kms(struct lov_stripe_md *lsm,
104 struct ost_lvb *lvb, __u64 *kms_place);
107 obd_size lov_stripe_size(struct lov_stripe_md *lsm, obd_size ost_size,
109 int lov_stripe_offset(struct lov_stripe_md *lsm, obd_off lov_off,
110 int stripeno, obd_off *obd_off);
111 obd_off lov_size_to_stripe(struct lov_stripe_md *lsm, obd_off file_size,
113 int lov_stripe_intersects(struct lov_stripe_md *lsm, int stripeno,
114 obd_off start, obd_off end,
115 obd_off *obd_start, obd_off *obd_end);
116 int lov_stripe_number(struct lov_stripe_md *lsm, obd_off lov_off);
117 pgoff_t lov_stripe_pgoff(struct lov_stripe_md *lsm, pgoff_t stripe_index,
121 void lov_set_add_req(struct lov_request *req, struct lov_request_set *set);
122 int lov_set_finished(struct lov_request_set *set, int idempotent);
123 void lov_update_set(struct lov_request_set *set,
124 struct lov_request *req, int rc);
125 int lov_update_common_set(struct lov_request_set *set,
126 struct lov_request *req, int rc);
127 int lov_check_and_wait_active(struct lov_obd *lov, int ost_idx);
128 int lov_prep_getattr_set(struct obd_export *exp, struct obd_info *oinfo,
129 struct lov_request_set **reqset);
130 int lov_fini_getattr_set(struct lov_request_set *set);
131 int lov_prep_destroy_set(struct obd_export *exp, struct obd_info *oinfo,
132 struct obdo *src_oa, struct lov_stripe_md *lsm,
133 struct obd_trans_info *oti,
134 struct lov_request_set **reqset);
135 int lov_fini_destroy_set(struct lov_request_set *set);
136 int lov_prep_setattr_set(struct obd_export *exp, struct obd_info *oinfo,
137 struct obd_trans_info *oti,
138 struct lov_request_set **reqset);
139 int lov_update_setattr_set(struct lov_request_set *set,
140 struct lov_request *req, int rc);
141 int lov_fini_setattr_set(struct lov_request_set *set);
142 int lov_prep_statfs_set(struct obd_device *obd, struct obd_info *oinfo,
143 struct lov_request_set **reqset);
144 void lov_update_statfs(struct obd_statfs *osfs, struct obd_statfs *lov_sfs,
146 int lov_fini_statfs(struct obd_device *obd, struct obd_statfs *osfs,
148 int lov_fini_statfs_set(struct lov_request_set *set);
149 int lov_statfs_interpret(struct ptlrpc_request_set *rqset, void *data, int rc);
152 void lov_stripe_lock(struct lov_stripe_md *md);
153 void lov_stripe_unlock(struct lov_stripe_md *md);
154 void lov_fix_desc(struct lov_desc *desc);
155 void lov_fix_desc_stripe_size(__u64 *val);
156 void lov_fix_desc_stripe_count(__u32 *val);
157 void lov_fix_desc_pattern(__u32 *val);
158 void lov_fix_desc_qos_maxage(__u32 *val);
159 __u16 lov_get_stripecnt(struct lov_obd *lov, __u32 magic, __u16 stripe_count);
160 int lov_connect_obd(struct obd_device *obd, __u32 index, int activate,
161 struct obd_connect_data *data);
162 int lov_setup(struct obd_device *obd, struct lustre_cfg *lcfg);
163 int lov_process_config_base(struct obd_device *obd, struct lustre_cfg *lcfg,
164 __u32 *indexp, int *genp);
165 int lov_del_target(struct obd_device *obd, __u32 index,
166 struct obd_uuid *uuidp, int gen);
169 int lov_packmd(struct obd_export *exp, struct lov_mds_md **lmm,
170 struct lov_stripe_md *lsm);
171 int lov_unpackmd(struct obd_export *exp, struct lov_stripe_md **lsmp,
172 struct lov_mds_md *lmm, int lmm_bytes);
173 int lov_getstripe(struct obd_export *exp,
174 struct lov_stripe_md *lsm, struct lov_user_md *lump);
175 int lov_alloc_memmd(struct lov_stripe_md **lsmp, __u16 stripe_count,
176 int pattern, int magic);
177 int lov_free_memmd(struct lov_stripe_md **lsmp);
179 void lov_dump_lmm_v1(int level, struct lov_mds_md_v1 *lmm);
180 void lov_dump_lmm_v3(int level, struct lov_mds_md_v3 *lmm);
181 void lov_dump_lmm_common(int level, void *lmmp);
182 void lov_dump_lmm(int level, void *lmm);
185 struct lov_stripe_md *lsm_alloc_plain(__u16 stripe_count, int *size);
186 void lsm_free_plain(struct lov_stripe_md *lsm);
189 extern struct file_operations lov_proc_target_fops;
191 extern struct lprocfs_seq_vars lprocfs_lov_obd_vars[];
195 extern struct lu_device_type lov_device_type;
198 extern cfs_hash_ops_t pool_hash_operations;
199 /* ost_pool methods */
200 int lov_ost_pool_init(struct ost_pool *op, unsigned int count);
201 int lov_ost_pool_extend(struct ost_pool *op, unsigned int min_count);
202 int lov_ost_pool_add(struct ost_pool *op, __u32 idx, unsigned int min_count);
203 int lov_ost_pool_remove(struct ost_pool *op, __u32 idx);
204 int lov_ost_pool_free(struct ost_pool *op);
206 /* high level pool methods */
207 int lov_pool_new(struct obd_device *obd, char *poolname);
208 int lov_pool_del(struct obd_device *obd, char *poolname);
209 int lov_pool_add(struct obd_device *obd, char *poolname, char *ostname);
210 int lov_pool_remove(struct obd_device *obd, char *poolname, char *ostname);
211 void lov_dump_pool(int level, struct pool_desc *pool);
212 void lov_pool_putref(struct pool_desc *pool);
214 static inline struct lov_stripe_md *lsm_addref(struct lov_stripe_md *lsm)
216 LASSERT(cfs_atomic_read(&lsm->lsm_refc) > 0);
217 cfs_atomic_inc(&lsm->lsm_refc);