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         struct dt_device  *dev    = lfsck_obj2dev(obj);
 104         loff_t             pos    = 0;
 105         int                len    = sizeof(struct lfsck_bookmark);
 106         int                rc;
 107         ENTRY;
 108
 109         lfsck_bookmark_cpu_to_le(&lfsck->li_bookmark_disk,
 110                                  &lfsck->li_bookmark_ram);
 111         handle = dt_trans_create(env, dev);
 112         if (IS_ERR(handle))
 113                 GOTO(log, rc = PTR_ERR(handle));
 114
 115         rc = dt_declare_record_write(env, obj,
 116                                      lfsck_buf_get(env,
 117                                      &lfsck->li_bookmark_disk, len),
 118                                      0, handle);
 119         if (rc != 0)
 120                 GOTO(out, rc);
 121
 122         rc = dt_trans_start_local(env, dev, handle);
 123         if (rc != 0)
 124                 GOTO(out, rc);
 125
 126         rc = dt_record_write(env, obj,
 127                              lfsck_buf_get(env, &lfsck->li_bookmark_disk, len),
 128                              &pos, handle);
 129
 130         GOTO(out, rc);
 131
 132 out:
 133         dt_trans_stop(env, dev, handle);
 134
 135 log:
 136         if (rc != 0)
 137                 CDEBUG(D_LFSCK, "%s: fail to store lfsck_bookmark: rc = %d\n",
 138                        lfsck_lfsck2name(lfsck), rc);
 139         return rc;
 140 }
 141
 142 static int lfsck_bookmark_init(const struct lu_env *env,
 143                                struct lfsck_instance *lfsck)
 144 {
 145         struct lfsck_bookmark *mb = &lfsck->li_bookmark_ram;
 146         int rc;
 147
 148         memset(mb, 0, sizeof(*mb));
 149         mb->lb_magic = LFSCK_BOOKMARK_MAGIC;
 150         mb->lb_version = LFSCK_VERSION_V2;
 151         mb->lb_async_windows = LFSCK_ASYNC_WIN_DEFAULT;
 152         mutex_lock(&lfsck->li_mutex);
 153         rc = lfsck_bookmark_store(env, lfsck);
 154         mutex_unlock(&lfsck->li_mutex);
 155         return rc;
 156 }
 157
 158 int lfsck_bookmark_setup(const struct lu_env *env,
 159                          struct lfsck_instance *lfsck)
 160 {
 161         struct dt_object *root;
 162         struct dt_object *obj;
 163         int               rc;
 164         ENTRY;
 165
 166         root = dt_locate(env, lfsck->li_bottom, &lfsck->li_local_root_fid);
 167         if (IS_ERR(root))
 168                 RETURN(PTR_ERR(root));
 169
 170         if (unlikely(!dt_try_as_dir(env, root))) {
 171                 lfsck_object_put(env, root);
 172
 173                 RETURN(-ENOTDIR);
 174         }
 175
 176         obj = local_file_find_or_create(env, lfsck->li_los, root,
 177                                         LFSCK_BOOKMARK,
 178                                         S_IFREG | S_IRUGO | S_IWUSR);
 179         lfsck_object_put(env, root);
 180         if (IS_ERR(obj))
 181                 RETURN(PTR_ERR(obj));
 182
 183         lfsck->li_bookmark_obj = obj;
 184         rc = lfsck_bookmark_load(env, lfsck);
 185         if (rc == 0) {
 186                 struct lfsck_bookmark *mb = &lfsck->li_bookmark_ram;
 187
 188                 /* It is upgraded from old release, set it as
 189                  * LFSCK_ASYNC_WIN_DEFAULT to avoid memory pressure. */
 190                 if (unlikely(mb->lb_async_windows == 0)) {
 191                         mb->lb_async_windows = LFSCK_ASYNC_WIN_DEFAULT;
 192                         mutex_lock(&lfsck->li_mutex);
 193                         rc = lfsck_bookmark_store(env, lfsck);
 194                         mutex_unlock(&lfsck->li_mutex);
 195                 }
 196         } else if (rc == -ENODATA) {
 197                 rc = lfsck_bookmark_init(env, lfsck);
 198         }
 199
 200         RETURN(rc);
 201 }
 202
 203 int lfsck_set_param(const struct lu_env *env, struct lfsck_instance *lfsck,
 204                     struct lfsck_start *start, bool reset)
 205 {
 206         struct lfsck_bookmark   *bk     = &lfsck->li_bookmark_ram;
 207         int                      rc     = 0;
 208         bool                     dirty  = false;
 209
 210         if (start == NULL) {
 211                 LASSERT(reset);
 212
 213                 if (bk->lb_param & LPF_ALL_TGT) {
 214                         bk->lb_param &= ~LPF_ALL_TGT;
 215                         dirty = true;
 216                 }
 217
 218                 if (bk->lb_param & LPF_CREATE_OSTOBJ) {
 219                         bk->lb_param &= ~LPF_CREATE_OSTOBJ;
 220                         dirty = true;
 221                 }
 222
 223                 if (bk->lb_param & LPF_CREATE_MDTOBJ) {
 224                         bk->lb_param &= ~LPF_CREATE_MDTOBJ;
 225                         dirty = true;
 226                 }
 227
 228                 if (bk->lb_param & LPF_FAILOUT) {
 229                         bk->lb_param &= ~LPF_FAILOUT;
 230                         dirty = true;
 231                 }
 232
 233                 if (bk->lb_param & LPF_DRYRUN) {
 234                         bk->lb_param &= ~LPF_DRYRUN;
 235                         dirty = true;
 236                 }
 237
 238                 if (bk->lb_param & LPF_OST_ORPHAN) {
 239                         bk->lb_param &= ~LPF_OST_ORPHAN;
 240                         dirty = true;
 241                 }
 242
 243                 if (__lfsck_set_speed(lfsck, LFSCK_SPEED_NO_LIMIT))
 244                         dirty = true;
 245
 246                 if (bk->lb_async_windows != LFSCK_ASYNC_WIN_DEFAULT) {
 247                         bk->lb_async_windows = LFSCK_ASYNC_WIN_DEFAULT;
 248                         dirty = true;
 249                 }
 250         } else {
 251                 if ((bk->lb_param & LPF_ALL_TGT) &&
 252                     !(start->ls_flags & LPF_ALL_TGT)) {
 253                         bk->lb_param &= ~LPF_ALL_TGT;
 254                         dirty = true;
 255                 } else if (!(bk->lb_param & LPF_ALL_TGT) &&
 256                            (start->ls_flags & LPF_ALL_TGT)) {
 257                         bk->lb_param |= LPF_ALL_TGT;
 258                         dirty = true;
 259                 }
 260
 261                 if ((start->ls_valid & LSV_CREATE_OSTOBJ) || reset) {
 262                         if ((bk->lb_param & LPF_CREATE_OSTOBJ) &&
 263                             !(start->ls_valid & LSV_CREATE_OSTOBJ)) {
 264                                 bk->lb_param &= ~LPF_CREATE_OSTOBJ;
 265                                 dirty = true;
 266                         } else if (!(bk->lb_param & LPF_CREATE_OSTOBJ) &&
 267                                    (start->ls_flags & LPF_CREATE_OSTOBJ)) {
 268                                 bk->lb_param |= LPF_CREATE_OSTOBJ;
 269                                 dirty = true;
 270                         }
 271                 }
 272
 273                 if ((start->ls_valid & LSV_CREATE_MDTOBJ) || reset) {
 274                         if ((bk->lb_param & LPF_CREATE_MDTOBJ) &&
 275                             !(start->ls_valid & LSV_CREATE_MDTOBJ)) {
 276                                 bk->lb_param &= ~LPF_CREATE_MDTOBJ;
 277                                 dirty = true;
 278                         } else if (!(bk->lb_param & LPF_CREATE_MDTOBJ) &&
 279                                    (start->ls_flags & LPF_CREATE_MDTOBJ)) {
 280                                 bk->lb_param |= LPF_CREATE_MDTOBJ;
 281                                 dirty = true;
 282                         }
 283                 }
 284
 285                 if ((start->ls_valid & LSV_ERROR_HANDLE) || reset) {
 286                         if ((bk->lb_param & LPF_FAILOUT) &&
 287                             !(start->ls_valid & LSV_ERROR_HANDLE)) {
 288                                 bk->lb_param &= ~LPF_FAILOUT;
 289                                 dirty = true;
 290                         } else if (!(start->ls_flags & LPF_FAILOUT) &&
 291                                    (bk->lb_param & LPF_FAILOUT)) {
 292                                 bk->lb_param &= ~LPF_FAILOUT;
 293                                 dirty = true;
 294                         }
 295                 }
 296
 297                 if ((start->ls_valid & LSV_DRYRUN) || reset) {
 298                         if ((bk->lb_param & LPF_DRYRUN) &&
 299                            !(start->ls_valid & LSV_DRYRUN)) {
 300                                 bk->lb_param &= ~LPF_DRYRUN;
 301                                 dirty = true;
 302                         } else if (!(start->ls_flags & LPF_DRYRUN) &&
 303                                    (bk->lb_param & LPF_DRYRUN)) {
 304                                 bk->lb_param &= ~LPF_DRYRUN;
 305                                 lfsck->li_drop_dryrun = 1;
 306                                 dirty = true;
 307                         }
 308                 }
 309
 310                 if ((bk->lb_param & LPF_OST_ORPHAN) &&
 311                     !(start->ls_flags & LPF_OST_ORPHAN)) {
 312                         bk->lb_param &= ~LPF_OST_ORPHAN;
 313                         dirty = true;
 314                 } else if (!(bk->lb_param & LPF_OST_ORPHAN) &&
 315                            (start->ls_flags & LPF_OST_ORPHAN)) {
 316                         bk->lb_param |= LPF_OST_ORPHAN;
 317                         dirty = true;
 318                 }
 319
 320                 if (start->ls_valid & LSV_SPEED_LIMIT) {
 321                         if (__lfsck_set_speed(lfsck, start->ls_speed_limit))
 322                                 dirty = true;
 323                 } else if (reset) {
 324                         if (__lfsck_set_speed(lfsck, LFSCK_SPEED_NO_LIMIT))
 325                                 dirty = true;
 326                 }
 327
 328                 if (start->ls_valid & LSV_ASYNC_WINDOWS) {
 329                         if (start->ls_async_windows < 1 ||
 330                             start->ls_async_windows > LFSCK_ASYNC_WIN_MAX)
 331                                 return -EINVAL;
 332
 333                         if (bk->lb_async_windows != start->ls_async_windows) {
 334                                 bk->lb_async_windows = start->ls_async_windows;
 335                                 dirty = true;
 336                         }
 337                 } else if (reset &&
 338                            bk->lb_async_windows != LFSCK_ASYNC_WIN_DEFAULT) {
 339                         bk->lb_async_windows = LFSCK_ASYNC_WIN_DEFAULT;
 340                         dirty = true;
 341                 }
 342         }
 343
 344         if (dirty)
 345                 rc = lfsck_bookmark_store(env, lfsck);
 346
 347         return rc;
 348 }