lustre/obdclass/llog_cat.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, 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).
  15  *
  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.gnu.org/licenses/gpl-2.0.html
  19  *
  20  * GPL HEADER END
  21  */
  22 /*
  23  * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
  24  * Use is subject to license terms.
  25  *
  26  * Copyright (c) 2012, 2017, Intel Corporation.
  27  */
  28 /*
  29  * This file is part of Lustre, http://www.lustre.org/
  30  * Lustre is a trademark of Sun Microsystems, Inc.
  31  *
  32  * lustre/obdclass/llog_cat.c
  33  *
  34  * OST<->MDS recovery logging infrastructure.
  35  *
  36  * Invariants in implementation:
  37  * - we do not share logs among different OST<->MDS connections, so that
  38  *   if an OST or MDS fails it need only look at log(s) relevant to itself
  39  *
  40  * Author: Andreas Dilger <adilger@clusterfs.com>
  41  * Author: Alexey Zhuravlev <alexey.zhuravlev@intel.com>
  42  * Author: Mikhail Pershin <mike.pershin@intel.com>
  43  */
  44
  45 #define DEBUG_SUBSYSTEM S_LOG
  46
  47
  48 #include <obd_class.h>
  49
  50 #include "llog_internal.h"
  51
  52
  53 /**
  54  * lockdep markers for nested struct llog_handle::lgh_lock locking.
  55  */
  56 enum {
  57         LLOGH_CAT,
  58         LLOGH_LOG,
  59 };
  60
  61 /* Create a new log handle and add it to the open list.
  62  * This log handle will be closed when all of the records in it are removed.
  63  *
  64  * Assumes caller has already pushed us into the kernel context and is locking.
  65  */
  66 static int llog_cat_new_log(const struct lu_env *env,
  67                             struct llog_handle *cathandle,
  68                             struct llog_handle *loghandle,
  69                             struct thandle *th)
  70 {
  71         struct llog_thread_info *lgi = llog_info(env);
  72         struct llog_logid_rec   *rec = &lgi->lgi_logid;
  73         struct thandle *handle = NULL;
  74         struct dt_device *dt = NULL;
  75         struct llog_log_hdr     *llh = cathandle->lgh_hdr;
  76         int                      rc, index;
  77
  78         ENTRY;
  79
  80         index = (cathandle->lgh_last_idx + 1) %
  81                 (OBD_FAIL_PRECHECK(OBD_FAIL_CAT_RECORDS) ? (cfs_fail_val + 1) :
  82                                                 LLOG_HDR_BITMAP_SIZE(llh));
  83
  84         /* check that new llog index will not overlap with the first one.
  85          * - llh_cat_idx is the index just before the first/oldest still in-use
  86          *      index in catalog
  87          * - lgh_last_idx is the last/newest used index in catalog
  88          *
  89          * When catalog is not wrapped yet then lgh_last_idx is always larger
  90          * than llh_cat_idx. After the wrap around lgh_last_idx re-starts
  91          * from 0 and llh_cat_idx becomes the upper limit for it
  92          *
  93          * Check if catalog has already wrapped around or not by comparing
  94          * last_idx and cat_idx */
  95         if ((index == llh->llh_cat_idx + 1 && llh->llh_count > 1) ||
  96             (index == 0 && llh->llh_cat_idx == 0)) {
  97                 if (cathandle->lgh_name == NULL) {
  98                         CWARN("%s: there are no more free slots in catalog "
  99                               DFID":%x\n",
 100                               loghandle->lgh_ctxt->loc_obd->obd_name,
 101                               PFID(&cathandle->lgh_id.lgl_oi.oi_fid),
 102                               cathandle->lgh_id.lgl_ogen);
 103                 } else {
 104                         CWARN("%s: there are no more free slots in "
 105                               "catalog %s\n",
 106                               loghandle->lgh_ctxt->loc_obd->obd_name,
 107                               cathandle->lgh_name);
 108                 }
 109                 RETURN(-ENOSPC);
 110         }
 111
 112         if (OBD_FAIL_CHECK(OBD_FAIL_MDS_LLOG_CREATE_FAILED))
 113                 RETURN(-ENOSPC);
 114
 115         if (loghandle->lgh_hdr != NULL) {
 116                 /* If llog object is remote and creation is failed, lgh_hdr
 117                  * might be left over here, free it first */
 118                 LASSERT(!llog_exist(loghandle));
 119                 OBD_FREE_LARGE(loghandle->lgh_hdr, loghandle->lgh_hdr_size);
 120                 loghandle->lgh_hdr = NULL;
 121         }
 122
 123         if (th == NULL) {
 124                 dt = lu2dt_dev(cathandle->lgh_obj->do_lu.lo_dev);
 125
 126                 handle = dt_trans_create(env, dt);
 127                 if (IS_ERR(handle))
 128                         RETURN(PTR_ERR(handle));
 129
 130                 /* Create update llog object synchronously, which
 131                  * happens during inialization process see
 132                  * lod_sub_prep_llog(), to make sure the update
 133                  * llog object is created before corss-MDT writing
 134                  * updates into the llog object */
 135                 if (cathandle->lgh_ctxt->loc_flags & LLOG_CTXT_FLAG_NORMAL_FID)
 136                         handle->th_sync = 1;
 137
 138                 handle->th_wait_submit = 1;
 139
 140                 rc = llog_declare_create(env, loghandle, handle);
 141                 if (rc != 0)
 142                         GOTO(out, rc);
 143
 144                 rec->lid_hdr.lrh_len = sizeof(*rec);
 145                 rec->lid_hdr.lrh_type = LLOG_LOGID_MAGIC;
 146                 rec->lid_id = loghandle->lgh_id;
 147                 rc = llog_declare_write_rec(env, cathandle, &rec->lid_hdr, -1,
 148                                             handle);
 149                 if (rc != 0)
 150                         GOTO(out, rc);
 151
 152                 rc = dt_trans_start_local(env, dt, handle);
 153                 if (rc != 0)
 154                         GOTO(out, rc);
 155
 156                 th = handle;
 157         }
 158
 159         rc = llog_create(env, loghandle, th);
 160         /* if llog is already created, no need to initialize it */
 161         if (rc == -EEXIST) {
 162                 GOTO(out, rc = 0);
 163         } else if (rc != 0) {
 164                 CERROR("%s: can't create new plain llog in catalog: rc = %d\n",
 165                        loghandle->lgh_ctxt->loc_obd->obd_name, rc);
 166                 GOTO(out, rc);
 167         }
 168
 169         rc = llog_init_handle(env, loghandle,
 170                               LLOG_F_IS_PLAIN | LLOG_F_ZAP_WHEN_EMPTY,
 171                               &cathandle->lgh_hdr->llh_tgtuuid);
 172         if (rc < 0)
 173                 GOTO(out, rc);
 174
 175         /* build the record for this log in the catalog */
 176         rec->lid_hdr.lrh_len = sizeof(*rec);
 177         rec->lid_hdr.lrh_type = LLOG_LOGID_MAGIC;
 178         rec->lid_id = loghandle->lgh_id;
 179
 180         /* append the new record into catalog. The new index will be
 181          * assigned to the record and updated in rec header */
 182         rc = llog_write_rec(env, cathandle, &rec->lid_hdr,
 183                             &loghandle->u.phd.phd_cookie, LLOG_NEXT_IDX, th);
 184         if (rc < 0)
 185                 GOTO(out_destroy, rc);
 186
 187         CDEBUG(D_OTHER, "new plain log "DFID".%u of catalog "DFID"\n",
 188                PFID(&loghandle->lgh_id.lgl_oi.oi_fid), rec->lid_hdr.lrh_index,
 189                PFID(&cathandle->lgh_id.lgl_oi.oi_fid));
 190
 191         loghandle->lgh_hdr->llh_cat_idx = rec->lid_hdr.lrh_index;
 192
 193         /* limit max size of plain llog so that space can be
 194          * released sooner, especially on small filesystems */
 195         /* 2MB for the cases when free space hasn't been learned yet */
 196         loghandle->lgh_max_size = 2 << 20;
 197         dt = lu2dt_dev(cathandle->lgh_obj->do_lu.lo_dev);
 198         rc = dt_statfs(env, dt, &lgi->lgi_statfs);
 199         if (rc == 0 && lgi->lgi_statfs.os_bfree > 0) {
 200                 __u64 freespace = (lgi->lgi_statfs.os_bfree *
 201                                   lgi->lgi_statfs.os_bsize) >> 6;
 202                 if (freespace < loghandle->lgh_max_size)
 203                         loghandle->lgh_max_size = freespace;
 204                 /* shouldn't be > 128MB in any case?
 205                  * it's 256K records of 512 bytes each */
 206                 if (freespace > (128 << 20))
 207                         loghandle->lgh_max_size = 128 << 20;
 208         }
 209         if (unlikely(OBD_FAIL_PRECHECK(OBD_FAIL_PLAIN_RECORDS) ||
 210                      OBD_FAIL_PRECHECK(OBD_FAIL_CATALOG_FULL_CHECK))) {
 211                 // limit the numer of plain records for test
 212                 loghandle->lgh_max_size = loghandle->lgh_hdr_size +
 213                        cfs_fail_val * 64;
 214         }
 215
 216         rc = 0;
 217
 218 out:
 219         if (handle != NULL) {
 220                 handle->th_result = rc >= 0 ? 0 : rc;
 221                 dt_trans_stop(env, dt, handle);
 222         }
 223         RETURN(rc);
 224
 225 out_destroy:
 226         /* to signal llog_cat_close() it shouldn't try to destroy the llog,
 227          * we want to destroy it in this transaction, otherwise the object
 228          * becomes an orphan */
 229         loghandle->lgh_hdr->llh_flags &= ~LLOG_F_ZAP_WHEN_EMPTY;
 230         /* this is to mimic full log, so another llog_cat_current_log()
 231          * can skip it and ask for another onet */
 232         loghandle->lgh_last_idx = LLOG_HDR_BITMAP_SIZE(loghandle->lgh_hdr) + 1;
 233         llog_trans_destroy(env, loghandle, th);
 234         if (handle != NULL)
 235                 dt_trans_stop(env, dt, handle);
 236         RETURN(rc);
 237 }
 238
 239 static int llog_cat_refresh(const struct lu_env *env,
 240                             struct llog_handle *cathandle)
 241 {
 242         struct llog_handle *loghandle;
 243         int rc;
 244
 245         down_write(&cathandle->lgh_lock);
 246         list_for_each_entry(loghandle, &cathandle->u.chd.chd_head,
 247                             u.phd.phd_entry) {
 248                 if (!llog_exist(loghandle))
 249                         continue;
 250
 251                 rc = llog_read_header(env, loghandle, NULL);
 252                 if (rc)
 253                         goto unlock;
 254         }
 255
 256         rc = llog_read_header(env, cathandle, NULL);
 257 unlock:
 258         up_write(&loghandle->lgh_lock);
 259
 260         return rc;
 261 }
 262
 263 /*
 264  * prepare current/next log for catalog.
 265  *
 266  * if \a *ploghandle is NULL, open it, and declare create, NB, if \a
 267  * *ploghandle is remote, create it synchronously here, see comments
 268  * below.
 269  *
 270  * \a cathandle->lgh_lock is down_read-ed, it gets down_write-ed if \a
 271  * *ploghandle has to be opened.
 272  */
 273 static int llog_cat_prep_log(const struct lu_env *env,
 274                              struct llog_handle *cathandle,
 275                              struct llog_handle **ploghandle,
 276                              struct thandle *th)
 277 {
 278         int rc;
 279         int sem_upgraded;
 280
 281 start:
 282         rc = 0;
 283         sem_upgraded = 0;
 284         if (IS_ERR_OR_NULL(*ploghandle)) {
 285                 up_read(&cathandle->lgh_lock);
 286                 down_write(&cathandle->lgh_lock);
 287                 sem_upgraded = 1;
 288                 if (IS_ERR_OR_NULL(*ploghandle)) {
 289                         struct llog_handle *loghandle;
 290
 291                         rc = llog_open(env, cathandle->lgh_ctxt, &loghandle,
 292                                        NULL, NULL, LLOG_OPEN_NEW);
 293                         if (!rc) {
 294                                 *ploghandle = loghandle;
 295                                 list_add_tail(&loghandle->u.phd.phd_entry,
 296                                               &cathandle->u.chd.chd_head);
 297                         }
 298                 }
 299                 if (rc)
 300                         GOTO(out, rc);
 301         }
 302
 303         rc = llog_exist(*ploghandle);
 304         if (rc < 0)
 305                 GOTO(out, rc);
 306         if (rc)
 307                 GOTO(out, rc = 0);
 308
 309         if (dt_object_remote(cathandle->lgh_obj)) {
 310                 down_write_nested(&(*ploghandle)->lgh_lock, LLOGH_LOG);
 311                 if (!llog_exist(*ploghandle)) {
 312                         /* For remote operation, if we put the llog object
 313                          * creation in the current transaction, then the
 314                          * llog object will not be created on the remote
 315                          * target until the transaction stop, if other
 316                          * operations start before the transaction stop,
 317                          * and use the same llog object, will be dependent
 318                          * on the success of this transaction. So let's
 319                          * create the llog object synchronously here to
 320                          * remove the dependency. */
 321                         rc = llog_cat_new_log(env, cathandle, *ploghandle,
 322                                               NULL);
 323                         if (rc == -ESTALE) {
 324                                 up_write(&(*ploghandle)->lgh_lock);
 325                                 if (sem_upgraded)
 326                                         up_write(&cathandle->lgh_lock);
 327                                 else
 328                                         up_read(&cathandle->lgh_lock);
 329
 330                                 rc = llog_cat_refresh(env, cathandle);
 331                                 down_read_nested(&cathandle->lgh_lock,
 332                                                  LLOGH_CAT);
 333                                 if (rc)
 334                                         return rc;
 335                                 /* *ploghandle might become NULL, restart */
 336                                 goto start;
 337                         }
 338                 }
 339                 up_write(&(*ploghandle)->lgh_lock);
 340         } else {
 341                 struct llog_thread_info *lgi = llog_info(env);
 342                 struct llog_logid_rec *lirec = &lgi->lgi_logid;
 343
 344                 rc = llog_declare_create(env, *ploghandle, th);
 345                 if (rc)
 346                         GOTO(out, rc);
 347
 348                 lirec->lid_hdr.lrh_len = sizeof(*lirec);
 349                 rc = llog_declare_write_rec(env, cathandle, &lirec->lid_hdr, -1,
 350                                             th);
 351         }
 352
 353 out:
 354         if (sem_upgraded) {
 355                 up_write(&cathandle->lgh_lock);
 356                 down_read_nested(&cathandle->lgh_lock, LLOGH_CAT);
 357                 if (rc == 0)
 358                         goto start;
 359         }
 360         return rc;
 361 }
 362
 363 /* Open an existent log handle and add it to the open list.
 364  * This log handle will be closed when all of the records in it are removed.
 365  *
 366  * Assumes caller has already pushed us into the kernel context and is locking.
 367  * We return a lock on the handle to ensure nobody yanks it from us.
 368  *
 369  * This takes extra reference on llog_handle via llog_handle_get() and require
 370  * this reference to be put by caller using llog_handle_put()
 371  */
 372 int llog_cat_id2handle(const struct lu_env *env, struct llog_handle *cathandle,
 373                        struct llog_handle **res, struct llog_logid *logid)
 374 {
 375         struct llog_handle      *loghandle;
 376         enum llog_flag           fmt;
 377         int                      rc = 0;
 378
 379         ENTRY;
 380
 381         if (cathandle == NULL)
 382                 RETURN(-EBADF);
 383
 384         fmt = cathandle->lgh_hdr->llh_flags & LLOG_F_EXT_MASK;
 385         down_write(&cathandle->lgh_lock);
 386         list_for_each_entry(loghandle, &cathandle->u.chd.chd_head,
 387                             u.phd.phd_entry) {
 388                 struct llog_logid *cgl = &loghandle->lgh_id;
 389
 390                 if (ostid_id(&cgl->lgl_oi) == ostid_id(&logid->lgl_oi) &&
 391                     ostid_seq(&cgl->lgl_oi) == ostid_seq(&logid->lgl_oi)) {
 392                         if (cgl->lgl_ogen != logid->lgl_ogen) {
 393                                 CWARN("%s: log "DFID" generation %x != %x\n",
 394                                       loghandle->lgh_ctxt->loc_obd->obd_name,
 395                                       PFID(&logid->lgl_oi.oi_fid),
 396                                       cgl->lgl_ogen, logid->lgl_ogen);
 397                                 continue;
 398                         }
 399                         loghandle->u.phd.phd_cat_handle = cathandle;
 400                         up_write(&cathandle->lgh_lock);
 401                         GOTO(out, rc = 0);
 402                 }
 403         }
 404         up_write(&cathandle->lgh_lock);
 405
 406         rc = llog_open(env, cathandle->lgh_ctxt, &loghandle, logid, NULL,
 407                        LLOG_OPEN_EXISTS);
 408         if (rc < 0) {
 409                 CERROR("%s: error opening log id "DFID":%x: rc = %d\n",
 410                        cathandle->lgh_ctxt->loc_obd->obd_name,
 411                        PFID(&logid->lgl_oi.oi_fid), logid->lgl_ogen, rc);
 412                 RETURN(rc);
 413         }
 414
 415         rc = llog_init_handle(env, loghandle, LLOG_F_IS_PLAIN | fmt, NULL);
 416         if (rc < 0) {
 417                 llog_close(env, loghandle);
 418                 loghandle = NULL;
 419                 RETURN(rc);
 420         }
 421
 422         down_write(&cathandle->lgh_lock);
 423         list_add_tail(&loghandle->u.phd.phd_entry, &cathandle->u.chd.chd_head);
 424         up_write(&cathandle->lgh_lock);
 425
 426         loghandle->u.phd.phd_cat_handle = cathandle;
 427         loghandle->u.phd.phd_cookie.lgc_lgl = cathandle->lgh_id;
 428         loghandle->u.phd.phd_cookie.lgc_index =
 429                                 loghandle->lgh_hdr->llh_cat_idx;
 430         EXIT;
 431 out:
 432         llog_handle_get(loghandle);
 433         *res = loghandle;
 434         return 0;
 435 }
 436
 437 int llog_cat_close(const struct lu_env *env, struct llog_handle *cathandle)
 438 {
 439         struct llog_handle      *loghandle, *n;
 440         int                      rc;
 441
 442         ENTRY;
 443
 444         list_for_each_entry_safe(loghandle, n, &cathandle->u.chd.chd_head,
 445                                  u.phd.phd_entry) {
 446                 struct llog_log_hdr     *llh = loghandle->lgh_hdr;
 447                 int                      index;
 448
 449                 /* unlink open-not-created llogs */
 450                 list_del_init(&loghandle->u.phd.phd_entry);
 451                 llh = loghandle->lgh_hdr;
 452                 if (loghandle->lgh_obj != NULL && llh != NULL &&
 453                     (llh->llh_flags & LLOG_F_ZAP_WHEN_EMPTY) &&
 454                     (llh->llh_count == 1)) {
 455                         rc = llog_destroy(env, loghandle);
 456                         if (rc)
 457                                 CERROR("%s: failure destroying log during "
 458                                        "cleanup: rc = %d\n",
 459                                        loghandle->lgh_ctxt->loc_obd->obd_name,
 460                                        rc);
 461
 462                         index = loghandle->u.phd.phd_cookie.lgc_index;
 463                         llog_cat_cleanup(env, cathandle, NULL, index);
 464                 }
 465                 llog_close(env, loghandle);
 466         }
 467         /* if handle was stored in ctxt, remove it too */
 468         if (cathandle->lgh_ctxt->loc_handle == cathandle)
 469                 cathandle->lgh_ctxt->loc_handle = NULL;
 470         rc = llog_close(env, cathandle);
 471         RETURN(rc);
 472 }
 473 EXPORT_SYMBOL(llog_cat_close);
 474
 475 /** Return the currently active log handle.  If the current log handle doesn't
 476  * have enough space left for the current record, start a new one.
 477  *
 478  * If reclen is 0, we only want to know what the currently active log is,
 479  * otherwise we get a lock on this log so nobody can steal our space.
 480  *
 481  * Assumes caller has already pushed us into the kernel context and is locking.
 482  *
 483  * NOTE: loghandle is write-locked upon successful return
 484  */
 485 static struct llog_handle *llog_cat_current_log(struct llog_handle *cathandle,
 486                                                 struct thandle *th)
 487 {
 488         struct llog_handle *loghandle = NULL;
 489         ENTRY;
 490
 491
 492         if (OBD_FAIL_CHECK(OBD_FAIL_MDS_LLOG_CREATE_FAILED2)) {
 493                 down_write_nested(&cathandle->lgh_lock, LLOGH_CAT);
 494                 GOTO(next, loghandle);
 495         }
 496
 497         down_read_nested(&cathandle->lgh_lock, LLOGH_CAT);
 498         loghandle = cathandle->u.chd.chd_current_log;
 499         if (loghandle) {
 500                 struct llog_log_hdr *llh;
 501
 502                 down_write_nested(&loghandle->lgh_lock, LLOGH_LOG);
 503                 llh = loghandle->lgh_hdr;
 504                 if (llh == NULL || !llog_is_full(loghandle)) {
 505                         up_read(&cathandle->lgh_lock);
 506                         RETURN(loghandle);
 507                 } else {
 508                         up_write(&loghandle->lgh_lock);
 509                 }
 510         }
 511         up_read(&cathandle->lgh_lock);
 512
 513         /* time to use next log */
 514
 515         /* first, we have to make sure the state hasn't changed */
 516         down_write_nested(&cathandle->lgh_lock, LLOGH_CAT);
 517         loghandle = cathandle->u.chd.chd_current_log;
 518         if (loghandle) {
 519                 struct llog_log_hdr *llh;
 520
 521                 down_write_nested(&loghandle->lgh_lock, LLOGH_LOG);
 522                 llh = loghandle->lgh_hdr;
 523                 if (llh == NULL || !llog_is_full(loghandle))
 524                         GOTO(out_unlock, loghandle);
 525                 else
 526                         up_write(&loghandle->lgh_lock);
 527         }
 528
 529 next:
 530         /* Sigh, the chd_next_log and chd_current_log is initialized
 531          * in declare phase, and we do not serialize the catlog
 532          * accessing, so it might be possible the llog creation
 533          * thread (see llog_cat_declare_add_rec()) did not create
 534          * llog successfully, then the following thread might
 535          * meet this situation. */
 536         if (IS_ERR_OR_NULL(cathandle->u.chd.chd_next_log)) {
 537                 CERROR("%s: next log does not exist!\n",
 538                        cathandle->lgh_ctxt->loc_obd->obd_name);
 539                 loghandle = ERR_PTR(-EIO);
 540                 if (cathandle->u.chd.chd_next_log == NULL) {
 541                         /* Store the error in chd_next_log, so
 542                          * the following process can get correct
 543                          * failure value */
 544                         cathandle->u.chd.chd_next_log = loghandle;
 545                 }
 546                 GOTO(out_unlock, loghandle);
 547         }
 548
 549         CDEBUG(D_INODE, "use next log\n");
 550
 551         loghandle = cathandle->u.chd.chd_next_log;
 552         cathandle->u.chd.chd_current_log = loghandle;
 553         cathandle->u.chd.chd_next_log = NULL;
 554         down_write_nested(&loghandle->lgh_lock, LLOGH_LOG);
 555
 556 out_unlock:
 557         up_write(&cathandle->lgh_lock);
 558         LASSERT(loghandle);
 559         RETURN(loghandle);
 560 }
 561
 562 /* Add a single record to the recovery log(s) using a catalog
 563  * Returns as llog_write_record
 564  *
 565  * Assumes caller has already pushed us into the kernel context.
 566  */
 567 int llog_cat_add_rec(const struct lu_env *env, struct llog_handle *cathandle,
 568                      struct llog_rec_hdr *rec, struct llog_cookie *reccookie,
 569                      struct thandle *th)
 570 {
 571         struct llog_handle *loghandle;
 572         int rc, retried = 0;
 573         ENTRY;
 574
 575         LASSERT(rec->lrh_len <= cathandle->lgh_ctxt->loc_chunk_size);
 576
 577 retry:
 578         loghandle = llog_cat_current_log(cathandle, th);
 579         if (IS_ERR(loghandle))
 580                 RETURN(PTR_ERR(loghandle));
 581
 582         /* loghandle is already locked by llog_cat_current_log() for us */
 583         if (!llog_exist(loghandle)) {
 584                 rc = llog_cat_new_log(env, cathandle, loghandle, th);
 585                 if (rc < 0) {
 586                         up_write(&loghandle->lgh_lock);
 587                         /* nobody should be trying to use this llog */
 588                         down_write(&cathandle->lgh_lock);
 589                         if (cathandle->u.chd.chd_current_log == loghandle)
 590                                 cathandle->u.chd.chd_current_log = NULL;
 591                         up_write(&cathandle->lgh_lock);
 592                         RETURN(rc);
 593                 }
 594         }
 595         /* now let's try to add the record */
 596         rc = llog_write_rec(env, loghandle, rec, reccookie, LLOG_NEXT_IDX, th);
 597         if (rc < 0) {
 598                 CDEBUG_LIMIT(rc == -ENOSPC ? D_HA : D_ERROR,
 599                              "llog_write_rec %d: lh=%p\n", rc, loghandle);
 600                 /* -ENOSPC is returned if no empty records left
 601                  * and when it's lack of space on the stogage.
 602                  * there is no point to try again if it's the second
 603                  * case. many callers (like llog test) expect ENOSPC,
 604                  * so we preserve this error code, but look for the
 605                  * actual cause here */
 606                 if (rc == -ENOSPC && llog_is_full(loghandle))
 607                         rc = -ENOBUFS;
 608         }
 609         up_write(&loghandle->lgh_lock);
 610
 611         if (rc == -ENOBUFS) {
 612                 if (retried++ == 0)
 613                         GOTO(retry, rc);
 614                 CERROR("%s: error on 2nd llog: rc = %d\n",
 615                        cathandle->lgh_ctxt->loc_obd->obd_name, rc);
 616         }
 617
 618         RETURN(rc);
 619 }
 620 EXPORT_SYMBOL(llog_cat_add_rec);
 621
 622 int llog_cat_declare_add_rec(const struct lu_env *env,
 623                              struct llog_handle *cathandle,
 624                              struct llog_rec_hdr *rec, struct thandle *th)
 625 {
 626         int rc;
 627
 628         ENTRY;
 629
 630 start:
 631         down_read_nested(&cathandle->lgh_lock, LLOGH_CAT);
 632         rc = llog_cat_prep_log(env, cathandle,
 633                                &cathandle->u.chd.chd_current_log, th);
 634         if (rc)
 635                 GOTO(unlock, rc);
 636
 637         rc = llog_cat_prep_log(env, cathandle, &cathandle->u.chd.chd_next_log,
 638                                th);
 639         if (rc)
 640                 GOTO(unlock, rc);
 641
 642         rc = llog_declare_write_rec(env, cathandle->u.chd.chd_current_log,
 643                                     rec, -1, th);
 644         if (rc == -ESTALE && dt_object_remote(cathandle->lgh_obj)) {
 645                 up_read(&cathandle->lgh_lock);
 646                 rc = llog_cat_refresh(env, cathandle);
 647                 if (rc)
 648                         RETURN(rc);
 649                 goto start;
 650         }
 651
 652 #if 0
 653         /*
 654          * XXX: we hope for declarations made for existing llog this might be
 655          * not correct with some backends where declarations are expected
 656          * against specific object like ZFS with full debugging enabled.
 657          */
 658         rc = llog_declare_write_rec(env, cathandle->u.chd.chd_next_log, rec, -1,
 659                                     th);
 660 #endif
 661 unlock:
 662         up_read(&cathandle->lgh_lock);
 663         RETURN(rc);
 664 }
 665 EXPORT_SYMBOL(llog_cat_declare_add_rec);
 666
 667 int llog_cat_add(const struct lu_env *env, struct llog_handle *cathandle,
 668                  struct llog_rec_hdr *rec, struct llog_cookie *reccookie)
 669 {
 670         struct llog_ctxt        *ctxt;
 671         struct dt_device        *dt;
 672         struct thandle          *th = NULL;
 673         int                      rc;
 674
 675         ctxt = cathandle->lgh_ctxt;
 676         LASSERT(ctxt);
 677         LASSERT(ctxt->loc_exp);
 678
 679         LASSERT(cathandle->lgh_obj != NULL);
 680         dt = lu2dt_dev(cathandle->lgh_obj->do_lu.lo_dev);
 681
 682         th = dt_trans_create(env, dt);
 683         if (IS_ERR(th))
 684                 RETURN(PTR_ERR(th));
 685
 686         rc = llog_cat_declare_add_rec(env, cathandle, rec, th);
 687         if (rc)
 688                 GOTO(out_trans, rc);
 689
 690         rc = dt_trans_start_local(env, dt, th);
 691         if (rc)
 692                 GOTO(out_trans, rc);
 693         rc = llog_cat_add_rec(env, cathandle, rec, reccookie, th);
 694 out_trans:
 695         dt_trans_stop(env, dt, th);
 696         RETURN(rc);
 697 }
 698 EXPORT_SYMBOL(llog_cat_add);
 699
 700 int llog_cat_cancel_arr_rec(const struct lu_env *env,
 701                             struct llog_handle *cathandle,
 702                             struct llog_logid *lgl, int count, int *index)
 703 {
 704         struct llog_handle *loghandle;
 705         int  rc;
 706
 707         ENTRY;
 708         rc = llog_cat_id2handle(env, cathandle, &loghandle, lgl);
 709         if (rc) {
 710                 CDEBUG(D_HA, "%s: cannot find llog for handle "DFID":%x"
 711                        ": rc = %d\n",
 712                        cathandle->lgh_ctxt->loc_obd->obd_name,
 713                        PFID(&lgl->lgl_oi.oi_fid), lgl->lgl_ogen, rc);
 714                 RETURN(rc);
 715         }
 716
 717         if ((cathandle->lgh_ctxt->loc_flags &
 718              LLOG_CTXT_FLAG_NORMAL_FID) && !llog_exist(loghandle)) {
 719                 /* For update log, some of loghandles of cathandle
 720                  * might not exist because remote llog creation might
 721                  * be failed, so let's skip the record cancellation
 722                  * for these non-exist llogs.
 723                  */
 724                 rc = -ENOENT;
 725                 CDEBUG(D_HA, "%s: llog "DFID":%x does not exist"
 726                        ": rc = %d\n",
 727                        cathandle->lgh_ctxt->loc_obd->obd_name,
 728                        PFID(&lgl->lgl_oi.oi_fid), lgl->lgl_ogen, rc);
 729
 730                 llog_handle_put(loghandle);
 731                 RETURN(rc);
 732         }
 733
 734         rc = llog_cancel_arr_rec(env, loghandle, count, index);
 735         if (rc == LLOG_DEL_PLAIN) { /* log has been destroyed */
 736                 int cat_index;
 737
 738                 cat_index = loghandle->u.phd.phd_cookie.lgc_index;
 739                 rc = llog_cat_cleanup(env, cathandle, loghandle, cat_index);
 740                 if (rc)
 741                         CERROR("%s: fail to cancel catalog record: rc = %d\n",
 742                                cathandle->lgh_ctxt->loc_obd->obd_name, rc);
 743                 rc = 0;
 744
 745         }
 746         llog_handle_put(loghandle);
 747
 748         if (rc)
 749                 CERROR("%s: fail to cancel %d llog-records: rc = %d\n",
 750                        cathandle->lgh_ctxt->loc_obd->obd_name, count,
 751                        rc);
 752
 753         RETURN(rc);
 754 }
 755 EXPORT_SYMBOL(llog_cat_cancel_arr_rec);
 756
 757 /* For each cookie in the cookie array, we clear the log in-use bit and either:
 758  * - the log is empty, so mark it free in the catalog header and delete it
 759  * - the log is not empty, just write out the log header
 760  *
 761  * The cookies may be in different log files, so we need to get new logs
 762  * each time.
 763  *
 764  * Assumes caller has already pushed us into the kernel context.
 765  */
 766 int llog_cat_cancel_records(const struct lu_env *env,
 767                             struct llog_handle *cathandle, int count,
 768                             struct llog_cookie *cookies)
 769 {
 770         int i, rc = 0, failed = 0;
 771
 772         ENTRY;
 773
 774         for (i = 0; i < count; i++, cookies++) {
 775                 int lrc;
 776
 777                 lrc = llog_cat_cancel_arr_rec(env, cathandle, &cookies->lgc_lgl,
 778                                              1, &cookies->lgc_index);
 779                 if (lrc) {
 780                         failed++;
 781                         if (!rc)
 782                                 rc = lrc;
 783                 }
 784         }
 785         if (failed)
 786                 CERROR("%s: fail to cancel %d of %d llog-records: rc = %d\n",
 787                        cathandle->lgh_ctxt->loc_obd->obd_name, failed, count,
 788                        rc);
 789         RETURN(rc);
 790 }
 791 EXPORT_SYMBOL(llog_cat_cancel_records);
 792
 793 static int llog_cat_process_common(const struct lu_env *env,
 794                                    struct llog_handle *cat_llh,
 795                                    struct llog_rec_hdr *rec,
 796                                    struct llog_handle **llhp)
 797 {
 798         struct llog_logid_rec *lir = container_of(rec, typeof(*lir), lid_hdr);
 799         struct llog_log_hdr *hdr;
 800         int rc;
 801
 802         ENTRY;
 803         if (rec->lrh_type != le32_to_cpu(LLOG_LOGID_MAGIC)) {
 804                 rc = -EINVAL;
 805                 CWARN("%s: invalid record in catalog "DFID":%x: rc = %d\n",
 806                       cat_llh->lgh_ctxt->loc_obd->obd_name,
 807                       PFID(&cat_llh->lgh_id.lgl_oi.oi_fid),
 808                       cat_llh->lgh_id.lgl_ogen, rc);
 809                 RETURN(rc);
 810         }
 811         CDEBUG(D_HA, "processing log "DFID":%x at index %u of catalog "DFID"\n",
 812                PFID(&lir->lid_id.lgl_oi.oi_fid), lir->lid_id.lgl_ogen,
 813                le32_to_cpu(rec->lrh_index),
 814                PFID(&cat_llh->lgh_id.lgl_oi.oi_fid));
 815
 816         rc = llog_cat_id2handle(env, cat_llh, llhp, &lir->lid_id);
 817         if (rc) {
 818                 /* After a server crash, a stub of index record in catlog could
 819                  * be kept, because plain log destroy + catlog index record
 820                  * deletion are not atomic. So we end up with an index but no
 821                  * actual record. Destroy the index and move on. */
 822                 if (rc == -ENOENT || rc == -ESTALE)
 823                         rc = LLOG_DEL_RECORD;
 824                 else if (rc)
 825                         CWARN("%s: can't find llog handle "DFID":%x: rc = %d\n",
 826                               cat_llh->lgh_ctxt->loc_obd->obd_name,
 827                               PFID(&lir->lid_id.lgl_oi.oi_fid),
 828                               lir->lid_id.lgl_ogen, rc);
 829
 830                 RETURN(rc);
 831         }
 832
 833         /* clean old empty llogs, do not consider current llog in use */
 834         /* ignore remote (lgh_obj == NULL) llogs */
 835         hdr = (*llhp)->lgh_hdr;
 836         if ((hdr->llh_flags & LLOG_F_ZAP_WHEN_EMPTY) &&
 837             hdr->llh_count == 1 && cat_llh->lgh_obj != NULL &&
 838             *llhp != cat_llh->u.chd.chd_current_log) {
 839                 rc = llog_destroy(env, *llhp);
 840                 if (rc)
 841                         CWARN("%s: can't destroy empty log "DFID": rc = %d\n",
 842                               (*llhp)->lgh_ctxt->loc_obd->obd_name,
 843                               PFID(&lir->lid_id.lgl_oi.oi_fid), rc);
 844                 rc = LLOG_DEL_PLAIN;
 845         }
 846
 847         RETURN(rc);
 848 }
 849
 850 static int llog_cat_process_cb(const struct lu_env *env,
 851                                struct llog_handle *cat_llh,
 852                                struct llog_rec_hdr *rec, void *data)
 853 {
 854         struct llog_process_data *d = data;
 855         struct llog_handle *llh = NULL;
 856         int rc;
 857
 858         ENTRY;
 859         rc = llog_cat_process_common(env, cat_llh, rec, &llh);
 860         if (rc)
 861                 GOTO(out, rc);
 862
 863         if (rec->lrh_index < d->lpd_startcat) {
 864                 /* Skip processing of the logs until startcat */
 865                 rc = 0;
 866         } else if (d->lpd_startidx > 0) {
 867                 struct llog_process_cat_data cd;
 868
 869                 cd.lpcd_first_idx = d->lpd_startidx;
 870                 cd.lpcd_last_idx = 0;
 871                 rc = llog_process_or_fork(env, llh, d->lpd_cb, d->lpd_data,
 872                                           &cd, false);
 873                 /* Continue processing the next log from idx 0 */
 874                 d->lpd_startidx = 0;
 875         } else {
 876                 rc = llog_process_or_fork(env, llh, d->lpd_cb, d->lpd_data,
 877                                           NULL, false);
 878         }
 879
 880 out:
 881         /* The empty plain log was destroyed while processing */
 882         if (rc == LLOG_DEL_PLAIN) {
 883                 rc = llog_cat_cleanup(env, cat_llh, llh,
 884                                       llh->u.phd.phd_cookie.lgc_index);
 885         } else if (rc == LLOG_DEL_RECORD) {
 886                 /* clear wrong catalog entry */
 887                 rc = llog_cat_cleanup(env, cat_llh, NULL, rec->lrh_index);
 888         }
 889
 890         if (llh)
 891                 llog_handle_put(llh);
 892
 893         RETURN(rc);
 894 }
 895
 896 int llog_cat_process_or_fork(const struct lu_env *env,
 897                              struct llog_handle *cat_llh, llog_cb_t cat_cb,
 898                              llog_cb_t cb, void *data, int startcat,
 899                              int startidx, bool fork)
 900 {
 901         struct llog_process_data d;
 902         struct llog_log_hdr *llh = cat_llh->lgh_hdr;
 903         int rc;
 904
 905         ENTRY;
 906
 907         LASSERT(llh->llh_flags & LLOG_F_IS_CAT);
 908         d.lpd_data = data;
 909         d.lpd_cb = cb;
 910         d.lpd_startcat = (startcat == LLOG_CAT_FIRST ? 0 : startcat);
 911         d.lpd_startidx = startidx;
 912
 913         if (llh->llh_cat_idx >= cat_llh->lgh_last_idx &&
 914             llh->llh_count > 1) {
 915                 struct llog_process_cat_data cd;
 916
 917                 CWARN("%s: catlog "DFID" crosses index zero\n",
 918                       cat_llh->lgh_ctxt->loc_obd->obd_name,
 919                       PFID(&cat_llh->lgh_id.lgl_oi.oi_fid));
 920                 /*startcat = 0 is default value for general processing */
 921                 if ((startcat != LLOG_CAT_FIRST &&
 922                     startcat >= llh->llh_cat_idx) || !startcat) {
 923                         /* processing the catalog part at the end */
 924                         cd.lpcd_first_idx = (startcat ? startcat :
 925                                              llh->llh_cat_idx);
 926                         if (OBD_FAIL_PRECHECK(OBD_FAIL_CAT_RECORDS))
 927                                 cd.lpcd_last_idx = cfs_fail_val;
 928                         else
 929                                 cd.lpcd_last_idx = 0;
 930                         rc = llog_process_or_fork(env, cat_llh, cat_cb,
 931                                                   &d, &cd, fork);
 932                         /* Reset the startcat becasue it has already reached
 933                          * catalog bottom.
 934                          */
 935                         startcat = 0;
 936                         d.lpd_startcat = 0;
 937                         if (rc != 0)
 938                                 RETURN(rc);
 939                 }
 940                 /* processing the catalog part at the begining */
 941                 cd.lpcd_first_idx = (startcat == LLOG_CAT_FIRST) ? 0 : startcat;
 942                 /* Note, the processing will stop at the lgh_last_idx value,
 943                  * and it could be increased during processing. So records
 944                  * between current lgh_last_idx and lgh_last_idx in future
 945                  * would left unprocessed.
 946                  */
 947                 cd.lpcd_last_idx = cat_llh->lgh_last_idx;
 948                 rc = llog_process_or_fork(env, cat_llh, cat_cb,
 949                                           &d, &cd, fork);
 950         } else {
 951                 rc = llog_process_or_fork(env, cat_llh, cat_cb,
 952                                           &d, NULL, fork);
 953         }
 954
 955         RETURN(rc);
 956 }
 957 EXPORT_SYMBOL(llog_cat_process_or_fork);
 958
 959 int llog_cat_process(const struct lu_env *env, struct llog_handle *cat_llh,
 960                      llog_cb_t cb, void *data, int startcat, int startidx)
 961 {
 962         return llog_cat_process_or_fork(env, cat_llh, llog_cat_process_cb,
 963                                         cb, data, startcat, startidx, false);
 964 }
 965 EXPORT_SYMBOL(llog_cat_process);
 966
 967 static int llog_cat_size_cb(const struct lu_env *env,
 968                              struct llog_handle *cat_llh,
 969                              struct llog_rec_hdr *rec, void *data)
 970 {
 971         struct llog_process_data *d = data;
 972         struct llog_handle *llh = NULL;
 973         __u64 *cum_size = d->lpd_data;
 974         __u64 size;
 975         int rc;
 976
 977         ENTRY;
 978         rc = llog_cat_process_common(env, cat_llh, rec, &llh);
 979
 980         if (rc == LLOG_DEL_PLAIN) {
 981                 /* empty log was deleted, don't count it */
 982                 rc = llog_cat_cleanup(env, cat_llh, llh,
 983                                       llh->u.phd.phd_cookie.lgc_index);
 984         } else if (rc == LLOG_DEL_RECORD) {
 985                 /* clear wrong catalog entry */
 986                 rc = llog_cat_cleanup(env, cat_llh, NULL, rec->lrh_index);
 987         } else {
 988                 size = llog_size(env, llh);
 989                 *cum_size += size;
 990
 991                 CDEBUG(D_INFO, "Add llog entry "DFID" size=%llu, tot=%llu\n",
 992                        PFID(&llh->lgh_id.lgl_oi.oi_fid), size, *cum_size);
 993         }
 994
 995         if (llh != NULL)
 996                 llog_handle_put(llh);
 997
 998         RETURN(0);
 999 }
1000
1001 __u64 llog_cat_size(const struct lu_env *env, struct llog_handle *cat_llh)
1002 {
1003         __u64 size = llog_size(env, cat_llh);
1004
1005         llog_cat_process_or_fork(env, cat_llh, llog_cat_size_cb,
1006                                  NULL, &size, 0, 0, false);
1007
1008         return size;
1009 }
1010 EXPORT_SYMBOL(llog_cat_size);
1011
1012 /* currently returns the number of "free" entries in catalog,
1013  * ie the available entries for a new plain LLOG file creation,
1014  * even if catalog has wrapped
1015  */
1016 __u32 llog_cat_free_space(struct llog_handle *cat_llh)
1017 {
1018         /* simulate almost full Catalog */
1019         if (OBD_FAIL_CHECK(OBD_FAIL_CAT_FREE_RECORDS))
1020                 return cfs_fail_val;
1021
1022         if (cat_llh->lgh_hdr->llh_count == 1)
1023                 return LLOG_HDR_BITMAP_SIZE(cat_llh->lgh_hdr) - 1;
1024
1025         if (cat_llh->lgh_last_idx > cat_llh->lgh_hdr->llh_cat_idx)
1026                 return LLOG_HDR_BITMAP_SIZE(cat_llh->lgh_hdr) - 1 +
1027                        cat_llh->lgh_hdr->llh_cat_idx - cat_llh->lgh_last_idx;
1028
1029         /* catalog is presently wrapped */
1030         return cat_llh->lgh_hdr->llh_cat_idx - cat_llh->lgh_last_idx;
1031 }
1032 EXPORT_SYMBOL(llog_cat_free_space);
1033
1034 static int llog_cat_reverse_process_cb(const struct lu_env *env,
1035                                        struct llog_handle *cat_llh,
1036                                        struct llog_rec_hdr *rec, void *data)
1037 {
1038         struct llog_process_data *d = data;
1039         struct llog_handle *llh;
1040         int rc;
1041
1042         ENTRY;
1043         rc = llog_cat_process_common(env, cat_llh, rec, &llh);
1044
1045         /* The empty plain log was destroyed while processing */
1046         if (rc == LLOG_DEL_PLAIN) {
1047                 rc = llog_cat_cleanup(env, cat_llh, llh,
1048                                       llh->u.phd.phd_cookie.lgc_index);
1049         } else if (rc == LLOG_DEL_RECORD) {
1050                 /* clear wrong catalog entry */
1051                 rc = llog_cat_cleanup(env, cat_llh, NULL, rec->lrh_index);
1052         }
1053         if (rc)
1054                 RETURN(rc);
1055
1056         rc = llog_reverse_process(env, llh, d->lpd_cb, d->lpd_data, NULL);
1057
1058         /* The empty plain was destroyed while processing */
1059         if (rc == LLOG_DEL_PLAIN)
1060                 rc = llog_cat_cleanup(env, cat_llh, llh,
1061                                       llh->u.phd.phd_cookie.lgc_index);
1062
1063         llog_handle_put(llh);
1064         RETURN(rc);
1065 }
1066
1067 int llog_cat_reverse_process(const struct lu_env *env,
1068                              struct llog_handle *cat_llh,
1069                              llog_cb_t cb, void *data)
1070 {
1071         struct llog_process_data d;
1072         struct llog_process_cat_data cd;
1073         struct llog_log_hdr *llh = cat_llh->lgh_hdr;
1074         int rc;
1075         ENTRY;
1076
1077         LASSERT(llh->llh_flags & LLOG_F_IS_CAT);
1078         d.lpd_data = data;
1079         d.lpd_cb = cb;
1080
1081         if (llh->llh_cat_idx >= cat_llh->lgh_last_idx &&
1082             llh->llh_count > 1) {
1083                 CWARN("%s: catalog "DFID" crosses index zero\n",
1084                       cat_llh->lgh_ctxt->loc_obd->obd_name,
1085                       PFID(&cat_llh->lgh_id.lgl_oi.oi_fid));
1086
1087                 cd.lpcd_first_idx = 0;
1088                 cd.lpcd_last_idx = cat_llh->lgh_last_idx;
1089                 rc = llog_reverse_process(env, cat_llh,
1090                                           llog_cat_reverse_process_cb,
1091                                           &d, &cd);
1092                 if (rc != 0)
1093                         RETURN(rc);
1094
1095                 cd.lpcd_first_idx = le32_to_cpu(llh->llh_cat_idx);
1096                 cd.lpcd_last_idx = 0;
1097                 rc = llog_reverse_process(env, cat_llh,
1098                                           llog_cat_reverse_process_cb,
1099                                           &d, &cd);
1100         } else {
1101                 rc = llog_reverse_process(env, cat_llh,
1102                                           llog_cat_reverse_process_cb,
1103                                           &d, NULL);
1104         }
1105
1106         RETURN(rc);
1107 }
1108 EXPORT_SYMBOL(llog_cat_reverse_process);
1109
1110 static int llog_cat_set_first_idx(struct llog_handle *cathandle, int idx)
1111 {
1112         struct llog_log_hdr *llh = cathandle->lgh_hdr;
1113         int bitmap_size;
1114
1115         ENTRY;
1116
1117         bitmap_size = LLOG_HDR_BITMAP_SIZE(llh);
1118         /*
1119          * The llh_cat_idx equals to the first used index minus 1
1120          * so if we canceled the first index then llh_cat_idx
1121          * must be renewed.
1122          */
1123         if (llh->llh_cat_idx == (idx - 1)) {
1124                 llh->llh_cat_idx = idx;
1125
1126                 while (idx != cathandle->lgh_last_idx) {
1127                         idx = (idx + 1) % bitmap_size;
1128                         if (!ext2_test_bit(idx, LLOG_HDR_BITMAP(llh))) {
1129                                 /* update llh_cat_idx for each unset bit,
1130                                  * expecting the next one is set */
1131                                 llh->llh_cat_idx = idx;
1132                         } else if (idx == 0) {
1133                                 /* skip header bit */
1134                                 llh->llh_cat_idx = 0;
1135                                 continue;
1136                         } else {
1137                                 /* the first index is found */
1138                                 break;
1139                         }
1140                 }
1141
1142                 CDEBUG(D_RPCTRACE, "catlog "DFID" first idx %u, last_idx %u\n",
1143                        PFID(&cathandle->lgh_id.lgl_oi.oi_fid),
1144                        llh->llh_cat_idx, cathandle->lgh_last_idx);
1145         }
1146
1147         RETURN(0);
1148 }
1149
1150 /* Cleanup deleted plain llog traces from catalog */
1151 int llog_cat_cleanup(const struct lu_env *env, struct llog_handle *cathandle,
1152                      struct llog_handle *loghandle, int index)
1153 {
1154         int rc;
1155
1156         LASSERT(index);
1157         if (loghandle != NULL) {
1158                 /* remove destroyed llog from catalog list and
1159                  * chd_current_log variable */
1160                 down_write(&cathandle->lgh_lock);
1161                 if (cathandle->u.chd.chd_current_log == loghandle)
1162                         cathandle->u.chd.chd_current_log = NULL;
1163                 list_del_init(&loghandle->u.phd.phd_entry);
1164                 up_write(&cathandle->lgh_lock);
1165                 LASSERT(index == loghandle->u.phd.phd_cookie.lgc_index);
1166                 /* llog was opened and keep in a list, close it now */
1167                 llog_close(env, loghandle);
1168         }
1169
1170         /* do not attempt to cleanup on-disk llog if on client side */
1171         if (cathandle->lgh_obj == NULL)
1172                 return 0;
1173
1174         /* remove plain llog entry from catalog by index */
1175         llog_cat_set_first_idx(cathandle, index);
1176         rc = llog_cancel_rec(env, cathandle, index);
1177         if (rc == 0)
1178                 CDEBUG(D_HA, "cancel plain log at index %u of catalog "DFID"\n",
1179                        index, PFID(&cathandle->lgh_id.lgl_oi.oi_fid));
1180         return rc;
1181 }