lustre/lfsck/lfsck_bookmark.c

   1 /*
   2  * GPL HEADER START
   3  *
   4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   5  *
   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.
   9
  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.
  15
  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
  19  *
  20  * GPL HEADER END
  21  */
  22 /*
  23  * Copyright (c) 2012, 2013, Intel Corporation.
  24  */
  25 /*
  26  * lustre/lfsck/lfsck_bookmark.c
  27  *
  28  * Author: Fan, Yong <fan.yong@intel.com>
  29  */
  30
  31 #define DEBUG_SUBSYSTEM S_LFSCK
  32
  33 #include <lu_object.h>
  34 #include <dt_object.h>
  35 #include <lustre_fid.h>
  36 #include <lustre/lustre_user.h>
  37
  38 #include "lfsck_internal.h"
  39
  40 #define LFSCK_BOOKMARK_MAGIC    0x20130C1D
  41
  42 static const char lfsck_bookmark_name[] = "lfsck_bookmark";
  43
  44 static void lfsck_bookmark_le_to_cpu(struct lfsck_bookmark *des,
  45                                      struct lfsck_bookmark *src)
  46 {
  47         des->lb_magic = le32_to_cpu(src->lb_magic);
  48         des->lb_version = le16_to_cpu(src->lb_version);
  49         des->lb_param = le16_to_cpu(src->lb_param);
  50         des->lb_speed_limit = le32_to_cpu(src->lb_speed_limit);
  51         des->lb_async_windows = le16_to_cpu(src->lb_async_windows);
  52         fid_le_to_cpu(&des->lb_lpf_fid, &src->lb_lpf_fid);
  53         fid_le_to_cpu(&des->lb_last_fid, &src->lb_last_fid);
  54 }
  55
  56 void lfsck_bookmark_cpu_to_le(struct lfsck_bookmark *des,
  57                               struct lfsck_bookmark *src)
  58 {
  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);
  63         des->lb_async_windows = cpu_to_le16(src->lb_async_windows);
  64         fid_cpu_to_le(&des->lb_lpf_fid, &src->lb_lpf_fid);
  65         fid_cpu_to_le(&des->lb_last_fid, &src->lb_last_fid);
  66 }
  67
  68 static int lfsck_bookmark_load(const struct lu_env *env,
  69                                struct lfsck_instance *lfsck)
  70 {
  71         loff_t pos = 0;
  72         int    len = sizeof(struct lfsck_bookmark);
  73         int    rc;
  74
  75         rc = dt_record_read(env, lfsck->li_bookmark_obj,
  76                             lfsck_buf_get(env, &lfsck->li_bookmark_disk, len),
  77                             &pos);
  78         if (rc == 0) {
  79                 struct lfsck_bookmark *bm = &lfsck->li_bookmark_ram;
  80
  81                 lfsck_bookmark_le_to_cpu(bm, &lfsck->li_bookmark_disk);
  82                 if (bm->lb_magic != LFSCK_BOOKMARK_MAGIC) {
  83                         CWARN("%s: invalid lfsck_bookmark magic %#x != %#x\n",
  84                               lfsck_lfsck2name(lfsck), bm->lb_magic,
  85                               LFSCK_BOOKMARK_MAGIC);
  86                         /* Process it as new lfsck_bookmark. */
  87                         rc = -ENODATA;
  88                 }
  89         } else {
  90                 if (rc == -EFAULT && pos == 0)
  91                         /* return -ENODATA for empty lfsck_bookmark. */
  92                         rc = -ENODATA;
  93                 else
  94                         CERROR("%s: fail to load lfsck_bookmark: "
  95                                "expected = %d, rc = %d\n",
  96                                lfsck_lfsck2name(lfsck), len, rc);
  97         }
  98         return rc;
  99 }
 100
 101 int lfsck_bookmark_store(const struct lu_env *env, struct lfsck_instance *lfsck)
 102 {
 103         struct thandle    *handle;
 104         struct dt_object  *obj    = lfsck->li_bookmark_obj;
 105         loff_t             pos    = 0;
 106         int                len    = sizeof(struct lfsck_bookmark);
 107         int                rc;
 108         ENTRY;
 109
 110         lfsck_bookmark_cpu_to_le(&lfsck->li_bookmark_disk,
 111                                  &lfsck->li_bookmark_ram);
 112         handle = dt_trans_create(env, lfsck->li_bottom);
 113         if (IS_ERR(handle)) {
 114                 rc = PTR_ERR(handle);
 115                 CERROR("%s: fail to create trans for storing lfsck_bookmark: "
 116                        "rc = %d\n", lfsck_lfsck2name(lfsck), rc);
 117                 RETURN(rc);
 118         }
 119
 120         rc = dt_declare_record_write(env, obj,
 121                                      lfsck_buf_get(env,
 122                                      &lfsck->li_bookmark_disk, len),
 123                                      0, handle);
 124         if (rc != 0) {
 125                 CERROR("%s: fail to declare trans for storing lfsck_bookmark: "
 126                        "rc = %d\n", lfsck_lfsck2name(lfsck), rc);
 127                 GOTO(out, rc);
 128         }
 129
 130         rc = dt_trans_start_local(env, lfsck->li_bottom, handle);
 131         if (rc != 0) {
 132                 CERROR("%s: fail to start trans for storing lfsck_bookmark: "
 133                        "rc = %d\n", lfsck_lfsck2name(lfsck), rc);
 134                 GOTO(out, rc);
 135         }
 136
 137         rc = dt_record_write(env, obj,
 138                              lfsck_buf_get(env, &lfsck->li_bookmark_disk, len),
 139                              &pos, handle);
 140         if (rc != 0)
 141                 CERROR("%s: fail to store lfsck_bookmark: expected = %d, "
 142                        "rc = %d\n", lfsck_lfsck2name(lfsck), len, rc);
 143
 144         GOTO(out, rc);
 145
 146 out:
 147         dt_trans_stop(env, lfsck->li_bottom, handle);
 148         return rc;
 149 }
 150
 151 static int lfsck_bookmark_init(const struct lu_env *env,
 152                                struct lfsck_instance *lfsck)
 153 {
 154         struct lfsck_bookmark *mb = &lfsck->li_bookmark_ram;
 155         int rc;
 156
 157         memset(mb, 0, sizeof(*mb));
 158         mb->lb_magic = LFSCK_BOOKMARK_MAGIC;
 159         mb->lb_version = LFSCK_VERSION_V2;
 160         mb->lb_async_windows = LFSCK_ASYNC_WIN_DEFAULT;
 161         mutex_lock(&lfsck->li_mutex);
 162         rc = lfsck_bookmark_store(env, lfsck);
 163         mutex_unlock(&lfsck->li_mutex);
 164         return rc;
 165 }
 166
 167 int lfsck_bookmark_setup(const struct lu_env *env,
 168                          struct lfsck_instance *lfsck)
 169 {
 170         struct dt_object *root;
 171         struct dt_object *obj;
 172         int               rc;
 173         ENTRY;
 174
 175         root = dt_locate(env, lfsck->li_bottom, &lfsck->li_local_root_fid);
 176         if (IS_ERR(root))
 177                 RETURN(PTR_ERR(root));
 178
 179         if (unlikely(!dt_try_as_dir(env, root))) {
 180                 lu_object_put(env, &root->do_lu);
 181
 182                 RETURN(-ENOTDIR);
 183         }
 184
 185         obj = local_file_find_or_create(env, lfsck->li_los, root,
 186                                         lfsck_bookmark_name,
 187                                         S_IFREG | S_IRUGO | S_IWUSR);
 188         lu_object_put(env, &root->do_lu);
 189         if (IS_ERR(obj))
 190                 RETURN(PTR_ERR(obj));
 191
 192         lfsck->li_bookmark_obj = obj;
 193         rc = lfsck_bookmark_load(env, lfsck);
 194         if (rc == -ENODATA)
 195                 rc = lfsck_bookmark_init(env, lfsck);
 196
 197         RETURN(rc);
 198 }
 199
 200 int lfsck_set_param(const struct lu_env *env, struct lfsck_instance *lfsck,
 201                     struct lfsck_start *start, bool reset)
 202 {
 203         struct lfsck_bookmark   *bk     = &lfsck->li_bookmark_ram;
 204         int                      rc     = 0;
 205         bool                     dirty  = false;
 206
 207         if (start == NULL) {
 208                 LASSERT(reset);
 209
 210                 if (bk->lb_param & LPF_ALL_TGT) {
 211                         bk->lb_param &= ~LPF_ALL_TGT;
 212                         dirty = true;
 213                 }
 214
 215                 if (bk->lb_param & LPF_CREATE_OSTOBJ) {
 216                         bk->lb_param &= ~LPF_CREATE_OSTOBJ;
 217                         dirty = true;
 218                 }
 219
 220                 if (bk->lb_param & LPF_FAILOUT) {
 221                         bk->lb_param &= ~LPF_FAILOUT;
 222                         dirty = true;
 223                 }
 224
 225                 if (bk->lb_param & LPF_DRYRUN) {
 226                         bk->lb_param &= ~LPF_DRYRUN;
 227                         dirty = true;
 228                 }
 229
 230                 if (bk->lb_param & LPF_ORPHAN) {
 231                         bk->lb_param &= ~LPF_ORPHAN;
 232                         dirty = true;
 233                 }
 234
 235                 if (__lfsck_set_speed(lfsck, LFSCK_SPEED_NO_LIMIT))
 236                         dirty = true;
 237
 238                 if (bk->lb_async_windows != LFSCK_ASYNC_WIN_DEFAULT) {
 239                         bk->lb_async_windows = LFSCK_ASYNC_WIN_DEFAULT;
 240                         dirty = true;
 241                 }
 242         } else {
 243                 if ((bk->lb_param & LPF_ALL_TGT) &&
 244                     !(start->ls_flags & LPF_ALL_TGT)) {
 245                         bk->lb_param &= ~LPF_ALL_TGT;
 246                         dirty = true;
 247                 } else if (!(bk->lb_param & LPF_ALL_TGT) &&
 248                            (start->ls_flags & LPF_ALL_TGT)) {
 249                         bk->lb_param |= LPF_ALL_TGT;
 250                         dirty = true;
 251                 }
 252
 253                 if ((start->ls_valid & LSV_CREATE_OSTOBJ) || reset) {
 254                         if ((bk->lb_param & LPF_CREATE_OSTOBJ) &&
 255                             !(start->ls_valid & LSV_CREATE_OSTOBJ)) {
 256                                 bk->lb_param &= ~LPF_CREATE_OSTOBJ;
 257                                 dirty = true;
 258                         } else if (!(bk->lb_param & LPF_CREATE_OSTOBJ) &&
 259                                    (start->ls_flags & LPF_CREATE_OSTOBJ)) {
 260                                 bk->lb_param |= LPF_CREATE_OSTOBJ;
 261                                 dirty = true;
 262                         }
 263                 }
 264
 265                 if ((start->ls_valid & LSV_ERROR_HANDLE) || reset) {
 266                         if ((bk->lb_param & LPF_FAILOUT) &&
 267                             !(start->ls_valid & LSV_ERROR_HANDLE)) {
 268                                 bk->lb_param &= ~LPF_FAILOUT;
 269                                 dirty = true;
 270                         } else if (!(start->ls_flags & LPF_FAILOUT) &&
 271                                    (bk->lb_param & LPF_FAILOUT)) {
 272                                 bk->lb_param &= ~LPF_FAILOUT;
 273                                 dirty = true;
 274                         }
 275                 }
 276
 277                 if ((start->ls_valid & LSV_DRYRUN) || reset) {
 278                         if ((bk->lb_param & LPF_DRYRUN) &&
 279                            !(start->ls_valid & LSV_DRYRUN)) {
 280                                 bk->lb_param &= ~LPF_DRYRUN;
 281                                 dirty = true;
 282                         } else if (!(start->ls_flags & LPF_DRYRUN) &&
 283                                    (bk->lb_param & LPF_DRYRUN)) {
 284                                 bk->lb_param &= ~LPF_DRYRUN;
 285                                 lfsck->li_drop_dryrun = 1;
 286                                 dirty = true;
 287                         }
 288                 }
 289
 290                 if ((bk->lb_param & LPF_ORPHAN) &&
 291                     !(start->ls_flags & LPF_ORPHAN)) {
 292                         bk->lb_param &= ~LPF_ORPHAN;
 293                         dirty = true;
 294                 } else if (!(bk->lb_param & LPF_ORPHAN) &&
 295                            (start->ls_flags & LPF_ORPHAN)) {
 296                         bk->lb_param |= LPF_ORPHAN;
 297                         dirty = true;
 298                 }
 299
 300                 if (start->ls_valid & LSV_SPEED_LIMIT) {
 301                         if (__lfsck_set_speed(lfsck, start->ls_speed_limit))
 302                                 dirty = true;
 303                 } else if (reset) {
 304                         if (__lfsck_set_speed(lfsck, LFSCK_SPEED_NO_LIMIT))
 305                                 dirty = true;
 306                 }
 307
 308                 if (start->ls_valid & LSV_ASYNC_WINDOWS) {
 309                         if (bk->lb_async_windows != start->ls_async_windows) {
 310                                 bk->lb_async_windows = start->ls_async_windows;
 311                                 dirty = true;
 312                         }
 313                 } else if (reset &&
 314                            bk->lb_async_windows != LFSCK_ASYNC_WIN_DEFAULT) {
 315                         bk->lb_async_windows = LFSCK_ASYNC_WIN_DEFAULT;
 316                         dirty = true;
 317                 }
 318         }
 319
 320         if (dirty)
 321                 rc = lfsck_bookmark_store(env, lfsck);
 322
 323         return rc;
 324 }
 325