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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,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License version 2 for more details. A copy is
14 * included in the COPYING file that accompanied this code.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23 * Copyright (c) 2012, 2013, Intel Corporation.
26 * lustre/lfsck/lfsck_bookmark.c
28 * Author: Fan, Yong <fan.yong@intel.com>
32 # define EXPORT_SYMTAB
34 #define DEBUG_SUBSYSTEM S_LFSCK
36 #include <lu_object.h>
37 #include <dt_object.h>
38 #include <lustre_fid.h>
39 #include <lustre/lustre_user.h>
41 #include "lfsck_internal.h"
43 #define LFSCK_BOOKMARK_MAGIC 0x20130C1D
45 static const char lfsck_bookmark_name[] = "lfsck_bookmark";
47 static void lfsck_bookmark_le_to_cpu(struct lfsck_bookmark *des,
48 struct lfsck_bookmark *src)
50 des->lb_magic = le32_to_cpu(src->lb_magic);
51 des->lb_version = le16_to_cpu(src->lb_version);
52 des->lb_param = le16_to_cpu(src->lb_param);
53 des->lb_speed_limit = le32_to_cpu(src->lb_speed_limit);
56 static void lfsck_bookmark_cpu_to_le(struct lfsck_bookmark *des,
57 struct lfsck_bookmark *src)
59 des->lb_magic = cpu_to_le32(src->lb_magic);
60 des->lb_version = cpu_to_le16(src->lb_version);
61 des->lb_param = cpu_to_le16(src->lb_param);
62 des->lb_speed_limit = cpu_to_le32(src->lb_speed_limit);
65 static int lfsck_bookmark_load(const struct lu_env *env,
66 struct lfsck_instance *lfsck)
69 int len = sizeof(struct lfsck_bookmark);
72 rc = dt_record_read(env, lfsck->li_bookmark_obj,
73 lfsck_buf_get(env, &lfsck->li_bookmark_disk, len),
76 struct lfsck_bookmark *bm = &lfsck->li_bookmark_ram;
78 lfsck_bookmark_le_to_cpu(bm, &lfsck->li_bookmark_disk);
79 if (bm->lb_magic != LFSCK_BOOKMARK_MAGIC) {
80 CWARN("%.16s: invalid lfsck_bookmark magic "
81 "0x%x != 0x%x\n", lfsck_lfsck2name(lfsck),
82 bm->lb_magic, LFSCK_BOOKMARK_MAGIC);
83 /* Process it as new lfsck_bookmark. */
87 if (rc == -EFAULT && pos == 0)
88 /* return -ENODATA for empty lfsck_bookmark. */
91 CERROR("%.16s: fail to load lfsck_bookmark, "
92 "expected = %d, rc = %d\n",
93 lfsck_lfsck2name(lfsck), len, rc);
98 int lfsck_bookmark_store(const struct lu_env *env, struct lfsck_instance *lfsck)
100 struct thandle *handle;
101 struct dt_object *obj = lfsck->li_bookmark_obj;
103 int len = sizeof(struct lfsck_bookmark);
107 lfsck_bookmark_cpu_to_le(&lfsck->li_bookmark_disk,
108 &lfsck->li_bookmark_ram);
109 handle = dt_trans_create(env, lfsck->li_bottom);
110 if (IS_ERR(handle)) {
111 rc = PTR_ERR(handle);
112 CERROR("%.16s: fail to create trans for storing "
113 "lfsck_bookmark: %d\n,", lfsck_lfsck2name(lfsck), rc);
117 rc = dt_declare_record_write(env, obj, len, 0, handle);
119 CERROR("%.16s: fail to declare trans for storing "
120 "lfsck_bookmark: %d\n,", lfsck_lfsck2name(lfsck), rc);
124 rc = dt_trans_start_local(env, lfsck->li_bottom, handle);
126 CERROR("%.16s: fail to start trans for storing "
127 "lfsck_bookmark: %d\n,", lfsck_lfsck2name(lfsck), rc);
131 rc = dt_record_write(env, obj,
132 lfsck_buf_get(env, &lfsck->li_bookmark_disk, len),
135 CERROR("%.16s: fail to store lfsck_bookmark, expected = %d, "
136 "rc = %d\n", lfsck_lfsck2name(lfsck), len, rc);
141 dt_trans_stop(env, lfsck->li_bottom, handle);
145 static int lfsck_bookmark_init(const struct lu_env *env,
146 struct lfsck_instance *lfsck)
148 struct lfsck_bookmark *mb = &lfsck->li_bookmark_ram;
151 memset(mb, 0, sizeof(*mb));
152 mb->lb_magic = LFSCK_BOOKMARK_MAGIC;
153 mb->lb_version = LFSCK_VERSION_V2;
154 mutex_lock(&lfsck->li_mutex);
155 rc = lfsck_bookmark_store(env, lfsck);
156 mutex_unlock(&lfsck->li_mutex);
160 int lfsck_bookmark_setup(const struct lu_env *env,
161 struct lfsck_instance *lfsck)
163 struct dt_object *obj;
167 obj = local_file_find_or_create(env, lfsck->li_los,
168 lfsck->li_local_root,
170 S_IFREG | S_IRUGO | S_IWUSR);
172 RETURN(PTR_ERR(obj));
174 lfsck->li_bookmark_obj = obj;
175 rc = lfsck_bookmark_load(env, lfsck);
177 rc = lfsck_bookmark_init(env, lfsck);