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) 2013, 2014, 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 void lfsck_bookmark_le_to_cpu(struct lfsck_bookmark *des,
  43                                      struct lfsck_bookmark *src)
  44 {
  45         des->lb_magic = le32_to_cpu(src->lb_magic);
  46         des->lb_version = le16_to_cpu(src->lb_version);
  47         des->lb_param = le16_to_cpu(src->lb_param);
  48         des->lb_speed_limit = le32_to_cpu(src->lb_speed_limit);
  49         des->lb_async_windows = le16_to_cpu(src->lb_async_windows);
  50         fid_le_to_cpu(&des->lb_lpf_fid, &src->lb_lpf_fid);
  51         fid_le_to_cpu(&des->lb_last_fid, &src->lb_last_fid);
  52 }
  53
  54 void lfsck_bookmark_cpu_to_le(struct lfsck_bookmark *des,
  55                               struct lfsck_bookmark *src)
  56 {
  57         des->lb_magic = cpu_to_le32(src->lb_magic);
  58         des->lb_version = cpu_to_le16(src->lb_version);
  59         des->lb_param = cpu_to_le16(src->lb_param);
  60         des->lb_speed_limit = cpu_to_le32(src->lb_speed_limit);
  61         des->lb_async_windows = cpu_to_le16(src->lb_async_windows);
  62         fid_cpu_to_le(&des->lb_lpf_fid, &src->lb_lpf_fid);
  63         fid_cpu_to_le(&des->lb_last_fid, &src->lb_last_fid);
  64 }
  65
  66 static int lfsck_bookmark_load(const struct lu_env *env,
  67                                struct lfsck_instance *lfsck)
  68 {
  69         loff_t pos = 0;
  70         int    len = sizeof(struct lfsck_bookmark);
  71         int    rc;
  72
  73         rc = dt_record_read(env, lfsck->li_bookmark_obj,
  74                             lfsck_buf_get(env, &lfsck->li_bookmark_disk, len),
  75                             &pos);
  76         if (rc == 0) {
  77                 struct lfsck_bookmark *bm = &lfsck->li_bookmark_ram;
  78
  79                 lfsck_bookmark_le_to_cpu(bm, &lfsck->li_bookmark_disk);
  80                 if (bm->lb_magic != LFSCK_BOOKMARK_MAGIC) {
  81                         CDEBUG(D_LFSCK, "%s: invalid lfsck_bookmark magic "
  82                               "%#x != %#x\n", lfsck_lfsck2name(lfsck),
  83                               bm->lb_magic, LFSCK_BOOKMARK_MAGIC);
  84                         /* Process it as new lfsck_bookmark. */
  85                         rc = -ENODATA;
  86                 }
  87         } else {
  88                 if (rc == -EFAULT && pos == 0)
  89                         /* return -ENODATA for empty lfsck_bookmark. */
  90                         rc = -ENODATA;
  91                 else
  92                         CDEBUG(D_LFSCK, "%s: fail to load lfsck_bookmark, "
  93                                "expected = %d: rc = %d\n",
  94                                lfsck_lfsck2name(lfsck), len, rc);
  95         }
  96         return rc;
  97 }
  98
  99 int lfsck_bookmark_store(const struct lu_env *env, struct lfsck_instance *lfsck)
 100 {
 101         struct thandle    *handle;
 102         struct dt_object  *obj    = lfsck->li_bookmark_obj;
 103         loff_t             pos    = 0;
 104         int                len    = sizeof(struct lfsck_bookmark);
 105         int                rc;
 106         ENTRY;
 107
 108         lfsck_bookmark_cpu_to_le(&lfsck->li_bookmark_disk,
 109                                  &lfsck->li_bookmark_ram);
 110         handle = dt_trans_create(env, lfsck->li_bottom);
 111         if (IS_ERR(handle))
 112                 GOTO(log, rc = PTR_ERR(handle));
 113
 114         rc = dt_declare_record_write(env, obj,
 115                                      lfsck_buf_get(env,
 116                                      &lfsck->li_bookmark_disk, len),
 117                                      0, handle);
 118         if (rc != 0)
 119                 GOTO(out, rc);
 120
 121         rc = dt_trans_start_local(env, lfsck->li_bottom, handle);
 122         if (rc != 0)
 123                 GOTO(out, rc);
 124
 125         rc = dt_record_write(env, obj,
 126                              lfsck_buf_get(env, &lfsck->li_bookmark_disk, len),
 127                              &pos, handle);
 128
 129         GOTO(out, rc);
 130
 131 out:
 132         dt_trans_stop(env, lfsck->li_bottom, handle);
 133
 134 log:
 135         if (rc != 0)
 136                 CDEBUG(D_LFSCK, "%s: fail to store lfsck_bookmark: rc = %d\n",
 137                        lfsck_lfsck2name(lfsck), rc);
 138         return rc;
 139 }
 140
 141 static int lfsck_bookmark_init(const struct lu_env *env,
 142                                struct lfsck_instance *lfsck)
 143 {
 144         struct lfsck_bookmark *mb = &lfsck->li_bookmark_ram;
 145         int rc;
 146
 147         memset(mb, 0, sizeof(*mb));
 148         mb->lb_magic = LFSCK_BOOKMARK_MAGIC;
 149         mb->lb_version = LFSCK_VERSION_V2;
 150         mb->lb_async_windows = LFSCK_ASYNC_WIN_DEFAULT;
 151         mutex_lock(&lfsck->li_mutex);
 152         rc = lfsck_bookmark_store(env, lfsck);
 153         mutex_unlock(&lfsck->li_mutex);
 154         return rc;
 155 }
 156
 157 int lfsck_bookmark_setup(const struct lu_env *env,
 158                          struct lfsck_instance *lfsck)
 159 {
 160         struct dt_object *root;
 161         struct dt_object *obj;
 162         int               rc;
 163         ENTRY;
 164
 165         root = dt_locate(env, lfsck->li_bottom, &lfsck->li_local_root_fid);
 166         if (IS_ERR(root))
 167                 RETURN(PTR_ERR(root));
 168
 169         if (unlikely(!dt_try_as_dir(env, root))) {
 170                 lu_object_put(env, &root->do_lu);
 171
 172                 RETURN(-ENOTDIR);
 173         }
 174
 175         obj = local_file_find_or_create(env, lfsck->li_los, root,
 176                                         LFSCK_BOOKMARK,
 177                                         S_IFREG | S_IRUGO | S_IWUSR);
 178         lu_object_put(env, &root->do_lu);
 179         if (IS_ERR(obj))
 180                 RETURN(PTR_ERR(obj));
 181
 182         lfsck->li_bookmark_obj = obj;
 183         rc = lfsck_bookmark_load(env, lfsck);
 184         if (rc == -ENODATA)
 185                 rc = lfsck_bookmark_init(env, lfsck);
 186
 187         RETURN(rc);
 188 }
 189
 190 int lfsck_set_param(const struct lu_env *env, struct lfsck_instance *lfsck,
 191                     struct lfsck_start *start, bool reset)
 192 {
 193         struct lfsck_bookmark   *bk     = &lfsck->li_bookmark_ram;
 194         int                      rc     = 0;
 195         bool                     dirty  = false;
 196
 197         if (start == NULL) {
 198                 LASSERT(reset);
 199
 200                 if (bk->lb_param & LPF_ALL_TGT) {
 201                         bk->lb_param &= ~LPF_ALL_TGT;
 202                         dirty = true;
 203                 }
 204
 205                 if (bk->lb_param & LPF_CREATE_OSTOBJ) {
 206                         bk->lb_param &= ~LPF_CREATE_OSTOBJ;
 207                         dirty = true;
 208                 }
 209
 210                 if (bk->lb_param & LPF_CREATE_MDTOBJ) {
 211                         bk->lb_param &= ~LPF_CREATE_MDTOBJ;
 212                         dirty = true;
 213                 }
 214
 215                 if (bk->lb_param & LPF_FAILOUT) {
 216                         bk->lb_param &= ~LPF_FAILOUT;
 217                         dirty = true;
 218                 }
 219
 220                 if (bk->lb_param & LPF_DRYRUN) {
 221                         bk->lb_param &= ~LPF_DRYRUN;
 222                         dirty = true;
 223                 }
 224
 225                 if (bk->lb_param & LPF_OST_ORPHAN) {
 226                         bk->lb_param &= ~LPF_OST_ORPHAN;
 227                         dirty = true;
 228                 }
 229
 230                 if (__lfsck_set_speed(lfsck, LFSCK_SPEED_NO_LIMIT))
 231                         dirty = true;
 232
 233                 if (bk->lb_async_windows != LFSCK_ASYNC_WIN_DEFAULT) {
 234                         bk->lb_async_windows = LFSCK_ASYNC_WIN_DEFAULT;
 235                         dirty = true;
 236                 }
 237         } else {
 238                 if ((bk->lb_param & LPF_ALL_TGT) &&
 239                     !(start->ls_flags & LPF_ALL_TGT)) {
 240                         bk->lb_param &= ~LPF_ALL_TGT;
 241                         dirty = true;
 242                 } else if (!(bk->lb_param & LPF_ALL_TGT) &&
 243                            (start->ls_flags & LPF_ALL_TGT)) {
 244                         bk->lb_param |= LPF_ALL_TGT;
 245                         dirty = true;
 246                 }
 247
 248                 if ((start->ls_valid & LSV_CREATE_OSTOBJ) || reset) {
 249                         if ((bk->lb_param & LPF_CREATE_OSTOBJ) &&
 250                             !(start->ls_valid & LSV_CREATE_OSTOBJ)) {
 251                                 bk->lb_param &= ~LPF_CREATE_OSTOBJ;
 252                                 dirty = true;
 253                         } else if (!(bk->lb_param & LPF_CREATE_OSTOBJ) &&
 254                                    (start->ls_flags & LPF_CREATE_OSTOBJ)) {
 255                                 bk->lb_param |= LPF_CREATE_OSTOBJ;
 256                                 dirty = true;
 257                         }
 258                 }
 259
 260                 if ((start->ls_valid & LSV_CREATE_MDTOBJ) || reset) {
 261                         if ((bk->lb_param & LPF_CREATE_MDTOBJ) &&
 262                             !(start->ls_valid & LSV_CREATE_MDTOBJ)) {
 263                                 bk->lb_param &= ~LPF_CREATE_MDTOBJ;
 264                                 dirty = true;
 265                         } else if (!(bk->lb_param & LPF_CREATE_MDTOBJ) &&
 266                                    (start->ls_flags & LPF_CREATE_MDTOBJ)) {
 267                                 bk->lb_param |= LPF_CREATE_MDTOBJ;
 268                                 dirty = true;
 269                         }
 270                 }
 271
 272                 if ((start->ls_valid & LSV_ERROR_HANDLE) || reset) {
 273                         if ((bk->lb_param & LPF_FAILOUT) &&
 274                             !(start->ls_valid & LSV_ERROR_HANDLE)) {
 275                                 bk->lb_param &= ~LPF_FAILOUT;
 276                                 dirty = true;
 277                         } else if (!(start->ls_flags & LPF_FAILOUT) &&
 278                                    (bk->lb_param & LPF_FAILOUT)) {
 279                                 bk->lb_param &= ~LPF_FAILOUT;
 280                                 dirty = true;
 281                         }
 282                 }
 283
 284                 if ((start->ls_valid & LSV_DRYRUN) || reset) {
 285                         if ((bk->lb_param & LPF_DRYRUN) &&
 286                            !(start->ls_valid & LSV_DRYRUN)) {
 287                                 bk->lb_param &= ~LPF_DRYRUN;
 288                                 dirty = true;
 289                         } else if (!(start->ls_flags & LPF_DRYRUN) &&
 290                                    (bk->lb_param & LPF_DRYRUN)) {
 291                                 bk->lb_param &= ~LPF_DRYRUN;
 292                                 lfsck->li_drop_dryrun = 1;
 293                                 dirty = true;
 294                         }
 295                 }
 296
 297                 if ((bk->lb_param & LPF_OST_ORPHAN) &&
 298                     !(start->ls_flags & LPF_OST_ORPHAN)) {
 299                         bk->lb_param &= ~LPF_OST_ORPHAN;
 300                         dirty = true;
 301                 } else if (!(bk->lb_param & LPF_OST_ORPHAN) &&
 302                            (start->ls_flags & LPF_OST_ORPHAN)) {
 303                         bk->lb_param |= LPF_OST_ORPHAN;
 304                         dirty = true;
 305                 }
 306
 307                 if (start->ls_valid & LSV_SPEED_LIMIT) {
 308                         if (__lfsck_set_speed(lfsck, start->ls_speed_limit))
 309                                 dirty = true;
 310                 } else if (reset) {
 311                         if (__lfsck_set_speed(lfsck, LFSCK_SPEED_NO_LIMIT))
 312                                 dirty = true;
 313                 }
 314
 315                 if (start->ls_valid & LSV_ASYNC_WINDOWS) {
 316                         if (bk->lb_async_windows != start->ls_async_windows) {
 317                                 bk->lb_async_windows = start->ls_async_windows;
 318                                 dirty = true;
 319                         }
 320                 } else if (reset &&
 321                            bk->lb_async_windows != LFSCK_ASYNC_WIN_DEFAULT) {
 322                         bk->lb_async_windows = LFSCK_ASYNC_WIN_DEFAULT;
 323                         dirty = true;
 324                 }
 325         }
 326
 327         if (dirty)
 328                 rc = lfsck_bookmark_store(env, lfsck);
 329
 330         return rc;
 331 }