4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, 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).
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.sun.com/software/products/lustre/docs/GPLv2.pdf
20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
21 * CA 95054 USA or visit www.sun.com if you need additional information or
27 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
30 * Copyright (c) 2011, 2012, Intel Corporation.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
36 * lustre/obdclass/llog_lvfs.c
38 * OST<->MDS recovery logging infrastructure.
39 * Invariants in implementation:
40 * - we do not share logs among different OST<->MDS connections, so that
41 * if an OST or MDS fails it need only look at log(s) relevant to itself
43 * Author: Andreas Dilger <adilger@clusterfs.com>
46 #define DEBUG_SUBSYSTEM S_LOG
49 #include <liblustre.h>
53 #include <obd_class.h>
54 #include <lustre_log.h>
56 #include <libcfs/list.h>
58 #include <lustre_fsfilt.h>
59 #include <lustre_disk.h>
60 #include "llog_internal.h"
62 #if defined(__KERNEL__) && defined(LLOG_LVFS)
64 static int llog_lvfs_pad(struct obd_device *obd, struct l_file *file,
67 struct llog_rec_hdr rec = { 0 };
68 struct llog_rec_tail tail;
72 LASSERT(len >= LLOG_MIN_REC_SIZE && (len & 0x7) == 0);
74 tail.lrt_len = rec.lrh_len = len;
75 tail.lrt_index = rec.lrh_index = index;
76 rec.lrh_type = LLOG_PAD_MAGIC;
78 rc = fsfilt_write_record(obd, file, &rec, sizeof(rec), &file->f_pos, 0);
80 CERROR("error writing padding record: rc %d\n", rc);
84 file->f_pos += len - sizeof(rec) - sizeof(tail);
85 rc = fsfilt_write_record(obd, file, &tail, sizeof(tail),&file->f_pos,0);
87 CERROR("error writing padding record: rc %d\n", rc);
95 static int llog_lvfs_write_blob(struct obd_device *obd, struct l_file *file,
96 struct llog_rec_hdr *rec, void *buf, loff_t off)
99 struct llog_rec_tail end;
100 loff_t saved_off = file->f_pos;
101 int buflen = rec->lrh_len;
108 CWARN("0-length record\n");
111 rc = fsfilt_write_record(obd, file, rec, buflen,&file->f_pos,0);
113 CERROR("error writing log record: rc %d\n", rc);
120 rec->lrh_len = sizeof(*rec) + buflen + sizeof(end);
121 rc = fsfilt_write_record(obd, file, rec, sizeof(*rec), &file->f_pos, 0);
123 CERROR("error writing log hdr: rc %d\n", rc);
127 rc = fsfilt_write_record(obd, file, buf, buflen, &file->f_pos, 0);
129 CERROR("error writing log buffer: rc %d\n", rc);
133 end.lrt_len = rec->lrh_len;
134 end.lrt_index = rec->lrh_index;
135 rc = fsfilt_write_record(obd, file, &end, sizeof(end), &file->f_pos, 0);
137 CERROR("error writing log tail: rc %d\n", rc);
143 if (saved_off > file->f_pos)
144 file->f_pos = saved_off;
149 static int llog_lvfs_read_blob(struct obd_device *obd, struct l_file *file,
150 void *buf, int size, loff_t off)
156 rc = fsfilt_read_record(obd, file, buf, size, &offset);
158 CERROR("error reading log record: rc %d\n", rc);
164 static int llog_lvfs_read_header(const struct lu_env *env,
165 struct llog_handle *handle)
167 struct obd_device *obd;
171 LASSERT(sizeof(*handle->lgh_hdr) == LLOG_CHUNK_SIZE);
173 obd = handle->lgh_ctxt->loc_exp->exp_obd;
175 if (i_size_read(handle->lgh_file->f_dentry->d_inode) == 0) {
176 CDEBUG(D_HA, "not reading header from 0-byte log\n");
180 rc = llog_lvfs_read_blob(obd, handle->lgh_file, handle->lgh_hdr,
183 CERROR("error reading log header from %.*s\n",
184 handle->lgh_file->f_dentry->d_name.len,
185 handle->lgh_file->f_dentry->d_name.name);
187 struct llog_rec_hdr *llh_hdr = &handle->lgh_hdr->llh_hdr;
189 if (LLOG_REC_HDR_NEEDS_SWABBING(llh_hdr))
190 lustre_swab_llog_hdr(handle->lgh_hdr);
192 if (llh_hdr->lrh_type != LLOG_HDR_MAGIC) {
193 CERROR("bad log %.*s header magic: %#x (expected %#x)\n",
194 handle->lgh_file->f_dentry->d_name.len,
195 handle->lgh_file->f_dentry->d_name.name,
196 llh_hdr->lrh_type, LLOG_HDR_MAGIC);
198 } else if (llh_hdr->lrh_len != LLOG_CHUNK_SIZE) {
199 CERROR("incorrectly sized log %.*s header: %#x "
201 handle->lgh_file->f_dentry->d_name.len,
202 handle->lgh_file->f_dentry->d_name.name,
203 llh_hdr->lrh_len, LLOG_CHUNK_SIZE);
204 CERROR("you may need to re-run lconf --write_conf.\n");
209 handle->lgh_last_idx = handle->lgh_hdr->llh_tail.lrt_index;
210 handle->lgh_file->f_pos = i_size_read(handle->lgh_file->f_dentry->d_inode);
215 /* returns negative in on error; 0 if success && reccookie == 0; 1 otherwise */
216 /* appends if idx == -1, otherwise overwrites record idx. */
217 static int llog_lvfs_write_rec(const struct lu_env *env,
218 struct llog_handle *loghandle,
219 struct llog_rec_hdr *rec,
220 struct llog_cookie *reccookie, int cookiecount,
221 void *buf, int idx, struct thandle *th)
223 struct llog_log_hdr *llh;
224 int reclen = rec->lrh_len, index, rc;
225 struct llog_rec_tail *lrt;
226 struct obd_device *obd;
231 llh = loghandle->lgh_hdr;
232 file = loghandle->lgh_file;
233 obd = loghandle->lgh_ctxt->loc_exp->exp_obd;
235 /* record length should not bigger than LLOG_CHUNK_SIZE */
237 rc = (reclen > LLOG_CHUNK_SIZE - sizeof(struct llog_rec_hdr) -
238 sizeof(struct llog_rec_tail)) ? -E2BIG : 0;
240 rc = (reclen > LLOG_CHUNK_SIZE) ? -E2BIG : 0;
245 /* write_blob adds header and tail to lrh_len. */
246 reclen = sizeof(*rec) + rec->lrh_len +
247 sizeof(struct llog_rec_tail);
252 /* no header: only allowed to insert record 1 */
253 if (idx != 1 && !i_size_read(file->f_dentry->d_inode)) {
254 CERROR("idx != -1 in empty log\n");
258 if (idx && llh->llh_size && llh->llh_size != rec->lrh_len)
261 if (!ext2_test_bit(idx, llh->llh_bitmap))
262 CERROR("Modify unset record %u\n", idx);
263 if (idx != rec->lrh_index)
264 CERROR("Index mismatch %d %u\n", idx, rec->lrh_index);
266 rc = llog_lvfs_write_blob(obd, file, &llh->llh_hdr, NULL, 0);
267 /* we are done if we only write the header or on error */
272 /* We assume that caller has set lgh_cur_* */
273 saved_offset = loghandle->lgh_cur_offset;
275 "modify record "LPX64": idx:%d/%u/%d, len:%u "
277 loghandle->lgh_id.lgl_oid, idx, rec->lrh_index,
278 loghandle->lgh_cur_idx, rec->lrh_len,
279 (long long)(saved_offset - sizeof(*llh)));
280 if (rec->lrh_index != loghandle->lgh_cur_idx) {
281 CERROR("modify idx mismatch %u/%d\n",
282 idx, loghandle->lgh_cur_idx);
286 /* Assumes constant lrh_len */
287 saved_offset = sizeof(*llh) + (idx - 1) * reclen;
290 rc = llog_lvfs_write_blob(obd, file, rec, buf, saved_offset);
291 if (rc == 0 && reccookie) {
292 reccookie->lgc_lgl = loghandle->lgh_id;
293 reccookie->lgc_index = idx;
299 /* Make sure that records don't cross a chunk boundary, so we can
300 * process them page-at-a-time if needed. If it will cross a chunk
301 * boundary, write in a fake (but referenced) entry to pad the chunk.
303 * We know that llog_current_log() will return a loghandle that is
304 * big enough to hold reclen, so all we care about is padding here.
306 left = LLOG_CHUNK_SIZE - (file->f_pos & (LLOG_CHUNK_SIZE - 1));
308 /* NOTE: padding is a record, but no bit is set */
309 if (left != 0 && left != reclen &&
310 left < (reclen + LLOG_MIN_REC_SIZE)) {
311 index = loghandle->lgh_last_idx + 1;
312 rc = llog_lvfs_pad(obd, file, left, index);
315 loghandle->lgh_last_idx++; /*for pad rec*/
317 /* if it's the last idx in log file, then return -ENOSPC */
318 if (loghandle->lgh_last_idx >= LLOG_BITMAP_SIZE(llh) - 1)
320 loghandle->lgh_last_idx++;
321 index = loghandle->lgh_last_idx;
322 LASSERT(index < LLOG_BITMAP_SIZE(llh));
323 rec->lrh_index = index;
325 lrt = (struct llog_rec_tail *)
326 ((char *)rec + rec->lrh_len - sizeof(*lrt));
327 lrt->lrt_len = rec->lrh_len;
328 lrt->lrt_index = rec->lrh_index;
330 /*The caller should make sure only 1 process access the lgh_last_idx,
331 *Otherwise it might hit the assert.*/
332 LASSERT(index < LLOG_BITMAP_SIZE(llh));
333 spin_lock(&loghandle->lgh_hdr_lock);
334 if (ext2_set_bit(index, llh->llh_bitmap)) {
335 CERROR("argh, index %u already set in log bitmap?\n", index);
336 spin_unlock(&loghandle->lgh_hdr_lock);
337 LBUG(); /* should never happen */
340 spin_unlock(&loghandle->lgh_hdr_lock);
341 llh->llh_tail.lrt_index = index;
343 rc = llog_lvfs_write_blob(obd, file, &llh->llh_hdr, NULL, 0);
347 rc = llog_lvfs_write_blob(obd, file, rec, buf, file->f_pos);
351 CDEBUG(D_RPCTRACE, "added record "LPX64": idx: %u, %u \n",
352 loghandle->lgh_id.lgl_oid, index, rec->lrh_len);
353 if (rc == 0 && reccookie) {
354 reccookie->lgc_lgl = loghandle->lgh_id;
355 reccookie->lgc_index = index;
356 if ((rec->lrh_type == MDS_UNLINK_REC) ||
357 (rec->lrh_type == MDS_SETATTR64_REC))
358 reccookie->lgc_subsys = LLOG_MDS_OST_ORIG_CTXT;
359 else if (rec->lrh_type == OST_SZ_REC)
360 reccookie->lgc_subsys = LLOG_SIZE_ORIG_CTXT;
362 reccookie->lgc_subsys = -1;
365 if (rc == 0 && rec->lrh_type == LLOG_GEN_REC)
371 /* We can skip reading at least as many log blocks as the number of
372 * minimum sized log records we are skipping. If it turns out
373 * that we are not far enough along the log (because the
374 * actual records are larger than minimum size) we just skip
375 * some more records. */
377 static void llog_skip_over(__u64 *off, int curr, int goal)
381 *off = (*off + (goal-curr-1) * LLOG_MIN_REC_SIZE) &
382 ~(LLOG_CHUNK_SIZE - 1);
387 * - cur_offset to the furthest point read in the log file
388 * - cur_idx to the log index preceeding cur_offset
389 * returns -EIO/-EINVAL on error
391 static int llog_lvfs_next_block(const struct lu_env *env,
392 struct llog_handle *loghandle, int *cur_idx,
393 int next_idx, __u64 *cur_offset, void *buf,
399 if (len == 0 || len & (LLOG_CHUNK_SIZE - 1))
402 CDEBUG(D_OTHER, "looking for log index %u (cur idx %u off "LPU64")\n",
403 next_idx, *cur_idx, *cur_offset);
405 while (*cur_offset < i_size_read(loghandle->lgh_file->f_dentry->d_inode)) {
406 struct llog_rec_hdr *rec, *last_rec;
407 struct llog_rec_tail *tail;
411 llog_skip_over(cur_offset, *cur_idx, next_idx);
413 /* read up to next LLOG_CHUNK_SIZE block */
415 llen = LLOG_CHUNK_SIZE - (*cur_offset & (LLOG_CHUNK_SIZE - 1));
416 rc = fsfilt_read_record(loghandle->lgh_ctxt->loc_exp->exp_obd,
417 loghandle->lgh_file, buf, llen,
420 CERROR("Cant read llog block at log id "LPU64
421 "/%u offset "LPU64"\n",
422 loghandle->lgh_id.lgl_oid,
423 loghandle->lgh_id.lgl_ogen,
428 /* put number of bytes read into rc to make code simpler */
429 rc = *cur_offset - ppos;
431 /* signal the end of the valid buffer to llog_process */
432 memset(buf + rc, 0, len - rc);
435 if (rc == 0) /* end of file, nothing to do */
438 if (rc < sizeof(*tail)) {
439 CERROR("Invalid llog block at log id "LPU64"/%u offset "
440 LPU64"\n", loghandle->lgh_id.lgl_oid,
441 loghandle->lgh_id.lgl_ogen, *cur_offset);
446 if (LLOG_REC_HDR_NEEDS_SWABBING(rec))
447 lustre_swab_llog_rec(rec);
449 tail = (struct llog_rec_tail *)(buf + rc -
450 sizeof(struct llog_rec_tail));
452 /* get the last record in block */
453 last_rec = (struct llog_rec_hdr *)(buf + rc -
454 le32_to_cpu(tail->lrt_len));
456 if (LLOG_REC_HDR_NEEDS_SWABBING(last_rec))
457 lustre_swab_llog_rec(last_rec);
458 LASSERT(last_rec->lrh_index == tail->lrt_index);
460 *cur_idx = tail->lrt_index;
462 /* this shouldn't happen */
463 if (tail->lrt_index == 0) {
464 CERROR("Invalid llog tail at log id "LPU64"/%u offset "
465 LPU64"\n", loghandle->lgh_id.lgl_oid,
466 loghandle->lgh_id.lgl_ogen, *cur_offset);
469 if (tail->lrt_index < next_idx)
472 /* sanity check that the start of the new buffer is no farther
473 * than the record that we wanted. This shouldn't happen. */
474 if (rec->lrh_index > next_idx) {
475 CERROR("missed desired record? %u > %u\n",
476 rec->lrh_index, next_idx);
484 static int llog_lvfs_prev_block(const struct lu_env *env,
485 struct llog_handle *loghandle,
486 int prev_idx, void *buf, int len)
492 if (len == 0 || len & (LLOG_CHUNK_SIZE - 1))
495 CDEBUG(D_OTHER, "looking for log index %u\n", prev_idx);
497 cur_offset = LLOG_CHUNK_SIZE;
498 llog_skip_over(&cur_offset, 0, prev_idx);
500 while (cur_offset < i_size_read(loghandle->lgh_file->f_dentry->d_inode)) {
501 struct llog_rec_hdr *rec, *last_rec;
502 struct llog_rec_tail *tail;
503 loff_t ppos = cur_offset;
505 rc = fsfilt_read_record(loghandle->lgh_ctxt->loc_exp->exp_obd,
506 loghandle->lgh_file, buf, len,
509 CERROR("Cant read llog block at log id "LPU64
510 "/%u offset "LPU64"\n",
511 loghandle->lgh_id.lgl_oid,
512 loghandle->lgh_id.lgl_ogen,
517 /* put number of bytes read into rc to make code simpler */
518 rc = cur_offset - ppos;
520 if (rc == 0) /* end of file, nothing to do */
523 if (rc < sizeof(*tail)) {
524 CERROR("Invalid llog block at log id "LPU64"/%u offset "
525 LPU64"\n", loghandle->lgh_id.lgl_oid,
526 loghandle->lgh_id.lgl_ogen, cur_offset);
531 if (LLOG_REC_HDR_NEEDS_SWABBING(rec))
532 lustre_swab_llog_rec(rec);
534 tail = (struct llog_rec_tail *)(buf + rc -
535 sizeof(struct llog_rec_tail));
537 /* get the last record in block */
538 last_rec = (struct llog_rec_hdr *)(buf + rc -
539 le32_to_cpu(tail->lrt_len));
541 if (LLOG_REC_HDR_NEEDS_SWABBING(last_rec))
542 lustre_swab_llog_rec(last_rec);
543 LASSERT(last_rec->lrh_index == tail->lrt_index);
545 /* this shouldn't happen */
546 if (tail->lrt_index == 0) {
547 CERROR("Invalid llog tail at log id "LPU64"/%u offset "
548 LPU64"\n", loghandle->lgh_id.lgl_oid,
549 loghandle->lgh_id.lgl_ogen, cur_offset);
552 if (tail->lrt_index < prev_idx)
555 /* sanity check that the start of the new buffer is no farther
556 * than the record that we wanted. This shouldn't happen. */
557 if (rec->lrh_index > prev_idx) {
558 CERROR("missed desired record? %u > %u\n",
559 rec->lrh_index, prev_idx);
567 static struct file *llog_filp_open(char *dir, char *name, int flags, int mode)
573 OBD_ALLOC(logname, PATH_MAX);
575 return ERR_PTR(-ENOMEM);
577 len = snprintf(logname, PATH_MAX, "%s/%s", dir, name);
578 if (len >= PATH_MAX - 1) {
579 filp = ERR_PTR(-ENAMETOOLONG);
581 filp = l_filp_open(logname, flags, mode);
582 if (IS_ERR(filp) && PTR_ERR(filp) != -ENOENT)
583 CERROR("logfile creation %s: %ld\n", logname,
586 OBD_FREE(logname, PATH_MAX);
590 static int llog_lvfs_open(const struct lu_env *env, struct llog_handle *handle,
591 struct llog_logid *logid, char *name,
592 enum llog_open_param open_param)
594 struct llog_ctxt *ctxt = handle->lgh_ctxt;
595 struct l_dentry *dchild = NULL;
596 struct obd_device *obd;
602 LASSERT(ctxt->loc_exp);
603 LASSERT(ctxt->loc_exp->exp_obd);
604 obd = ctxt->loc_exp->exp_obd;
608 dchild = obd_lvfs_fid2dentry(ctxt->loc_exp, logid->lgl_oid,
609 logid->lgl_ogen, logid->lgl_oseq);
610 if (IS_ERR(dchild)) {
611 rc = PTR_ERR(dchild);
612 CERROR("%s: error looking up logfile #"LPX64"#"
613 LPX64"#%08x: rc = %d\n",
614 ctxt->loc_obd->obd_name, logid->lgl_oid,
615 logid->lgl_oseq, logid->lgl_ogen, rc);
618 if (dchild->d_inode == NULL) {
621 CERROR("%s: nonexistent llog #"LPX64"#"LPX64"#%08x: "
622 "rc = %d\n", ctxt->loc_obd->obd_name,
623 logid->lgl_oid, logid->lgl_oseq,
624 logid->lgl_ogen, rc);
627 /* l_dentry_open will call dput(dchild) if there is an error */
628 handle->lgh_file = l_dentry_open(&obd->obd_lvfs_ctxt, dchild,
629 O_RDWR | O_LARGEFILE);
630 if (IS_ERR(handle->lgh_file)) {
631 rc = PTR_ERR(handle->lgh_file);
632 handle->lgh_file = NULL;
633 CERROR("%s: error opening llog #"LPX64"#"LPX64"#%08x: "
634 "rc = %d\n", ctxt->loc_obd->obd_name,
635 logid->lgl_oid, logid->lgl_oseq,
636 logid->lgl_ogen, rc);
639 handle->lgh_id = *logid;
641 handle->lgh_file = llog_filp_open(MOUNT_CONFIGS_DIR, name,
642 O_RDWR | O_LARGEFILE, 0644);
643 if (IS_ERR(handle->lgh_file)) {
644 rc = PTR_ERR(handle->lgh_file);
645 handle->lgh_file = NULL;
646 if (rc == -ENOENT && open_param == LLOG_OPEN_NEW) {
647 OBD_ALLOC(handle->lgh_name, strlen(name) + 1);
648 if (handle->lgh_name)
649 strcpy(handle->lgh_name, name);
651 GOTO(out, rc = -ENOMEM);
657 handle->lgh_id.lgl_oseq = FID_SEQ_LLOG;
658 handle->lgh_id.lgl_oid =
659 handle->lgh_file->f_dentry->d_inode->i_ino;
660 handle->lgh_id.lgl_ogen =
661 handle->lgh_file->f_dentry->d_inode->i_generation;
664 LASSERTF(open_param == LLOG_OPEN_NEW, "%#x\n", open_param);
665 handle->lgh_file = NULL;
668 /* No new llog is expected but doesn't exist */
669 if (open_param != LLOG_OPEN_NEW && handle->lgh_file == NULL)
670 GOTO(out_name, rc = -ENOENT);
674 if (handle->lgh_name != NULL)
675 OBD_FREE(handle->lgh_name, strlen(name) + 1);
680 static int llog_lvfs_exist(struct llog_handle *handle)
682 return (handle->lgh_file != NULL);
685 /* This is a callback from the llog_* functions.
686 * Assumes caller has already pushed us into the kernel context. */
687 static int llog_lvfs_create(const struct lu_env *env,
688 struct llog_handle *handle,
691 struct llog_ctxt *ctxt = handle->lgh_ctxt;
692 struct obd_device *obd;
693 struct l_dentry *dchild = NULL;
695 struct obdo *oa = NULL;
697 int open_flags = O_RDWR | O_CREAT | O_LARGEFILE;
702 LASSERT(ctxt->loc_exp);
703 obd = ctxt->loc_exp->exp_obd;
704 LASSERT(handle->lgh_file == NULL);
706 if (handle->lgh_name) {
707 file = llog_filp_open(MOUNT_CONFIGS_DIR, handle->lgh_name,
710 RETURN(PTR_ERR(file));
712 handle->lgh_id.lgl_oseq = FID_SEQ_LLOG;
713 handle->lgh_id.lgl_oid = file->f_dentry->d_inode->i_ino;
714 handle->lgh_id.lgl_ogen =
715 file->f_dentry->d_inode->i_generation;
716 handle->lgh_file = file;
722 oa->o_seq = FID_SEQ_LLOG;
723 oa->o_valid = OBD_MD_FLGENER | OBD_MD_FLGROUP;
725 rc = obd_create(NULL, ctxt->loc_exp, oa, NULL, NULL);
729 /* FIXME: rationalize the misuse of o_generation in
730 * this API along with mds_obd_{create,destroy}.
731 * Hopefully it is only an internal API issue. */
732 #define o_generation o_parent_oid
733 dchild = obd_lvfs_fid2dentry(ctxt->loc_exp, oa->o_id,
734 oa->o_generation, oa->o_seq);
736 GOTO(out, rc = PTR_ERR(dchild));
738 file = l_dentry_open(&obd->obd_lvfs_ctxt, dchild, open_flags);
740 GOTO(out, rc = PTR_ERR(file));
741 handle->lgh_id.lgl_oseq = oa->o_seq;
742 handle->lgh_id.lgl_oid = oa->o_id;
743 handle->lgh_id.lgl_ogen = oa->o_generation;
744 handle->lgh_file = file;
751 static int llog_lvfs_close(const struct lu_env *env,
752 struct llog_handle *handle)
758 if (handle->lgh_file == NULL)
760 rc = filp_close(handle->lgh_file, 0);
762 CERROR("%s: error closing llog #"LPX64"#"LPX64"#%08x: "
763 "rc = %d\n", handle->lgh_ctxt->loc_obd->obd_name,
764 handle->lgh_id.lgl_oid, handle->lgh_id.lgl_oseq,
765 handle->lgh_id.lgl_ogen, rc);
766 handle->lgh_file = NULL;
767 if (handle->lgh_name) {
768 OBD_FREE(handle->lgh_name, strlen(handle->lgh_name) + 1);
769 handle->lgh_name = NULL;
774 static int llog_lvfs_destroy(const struct lu_env *env,
775 struct llog_handle *handle)
777 struct dentry *fdentry;
779 struct obd_device *obd = handle->lgh_ctxt->loc_exp->exp_obd;
786 dir = MOUNT_CONFIGS_DIR;
788 LASSERT(handle->lgh_file);
789 fdentry = handle->lgh_file->f_dentry;
790 inode = fdentry->d_parent->d_inode;
791 if (strcmp(fdentry->d_parent->d_name.name, dir) == 0) {
792 struct lvfs_run_ctxt saved;
793 struct vfsmount *mnt = mntget(handle->lgh_file->f_vfsmnt);
795 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
797 rc = llog_lvfs_close(env, handle);
799 mutex_lock_nested(&inode->i_mutex, I_MUTEX_PARENT);
800 rc = ll_vfs_unlink(inode, fdentry, mnt);
801 mutex_unlock(&inode->i_mutex);
806 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
814 oa->o_id = handle->lgh_id.lgl_oid;
815 oa->o_seq = handle->lgh_id.lgl_oseq;
816 oa->o_generation = handle->lgh_id.lgl_ogen;
818 oa->o_valid = OBD_MD_FLID | OBD_MD_FLGROUP | OBD_MD_FLGENER;
820 rc = llog_lvfs_close(env, handle);
824 th = fsfilt_start_log(obd, inode, FSFILT_OP_UNLINK, NULL, 1);
826 CERROR("fsfilt_start failed: %ld\n", PTR_ERR(th));
827 GOTO(out, rc = PTR_ERR(th));
830 rc = obd_destroy(NULL, handle->lgh_ctxt->loc_exp, oa,
831 NULL, NULL, NULL, NULL);
833 rc1 = fsfilt_commit(obd, inode, th, 0);
834 if (rc == 0 && rc1 != 0)
841 /* reads the catalog list */
842 int llog_get_cat_list(struct obd_device *disk_obd,
843 char *name, int idx, int count, struct llog_catid *idarray)
845 struct lvfs_run_ctxt saved;
848 int size = sizeof(*idarray) * count;
849 loff_t off = idx * sizeof(*idarray);
855 push_ctxt(&saved, &disk_obd->obd_lvfs_ctxt, NULL);
856 file = filp_open(name, O_RDWR | O_CREAT | O_LARGEFILE, 0700);
857 if (!file || IS_ERR(file)) {
859 CERROR("OBD filter: cannot open/create %s: rc = %d\n",
864 if (!S_ISREG(file->f_dentry->d_inode->i_mode)) {
865 CERROR("%s is not a regular file!: mode = %o\n", name,
866 file->f_dentry->d_inode->i_mode);
867 GOTO(out, rc = -ENOENT);
870 CDEBUG(D_CONFIG, "cat list: disk size=%d, read=%d\n",
871 (int)i_size_read(file->f_dentry->d_inode), size);
873 /* read for new ost index or for empty file */
874 memset(idarray, 0, size);
875 if (i_size_read(file->f_dentry->d_inode) < off)
878 rc = fsfilt_read_record(disk_obd, file, idarray, size, &off);
880 CERROR("OBD filter: error reading %s: rc %d\n", name, rc);
886 pop_ctxt(&saved, &disk_obd->obd_lvfs_ctxt, NULL);
887 if (file && !IS_ERR(file))
888 rc1 = filp_close(file, 0);
893 EXPORT_SYMBOL(llog_get_cat_list);
895 /* writes the cat list */
896 int llog_put_cat_list(struct obd_device *disk_obd,
897 char *name, int idx, int count, struct llog_catid *idarray)
899 struct lvfs_run_ctxt saved;
902 int size = sizeof(*idarray) * count;
903 loff_t off = idx * sizeof(*idarray);
908 push_ctxt(&saved, &disk_obd->obd_lvfs_ctxt, NULL);
909 file = filp_open(name, O_RDWR | O_CREAT | O_LARGEFILE, 0700);
910 if (!file || IS_ERR(file)) {
912 CERROR("OBD filter: cannot open/create %s: rc = %d\n",
917 if (!S_ISREG(file->f_dentry->d_inode->i_mode)) {
918 CERROR("%s is not a regular file!: mode = %o\n", name,
919 file->f_dentry->d_inode->i_mode);
920 GOTO(out, rc = -ENOENT);
923 rc = fsfilt_write_record(disk_obd, file, idarray, size, &off, 1);
925 CDEBUG(D_INODE,"OBD filter: error writeing %s: rc %d\n",
931 pop_ctxt(&saved, &disk_obd->obd_lvfs_ctxt, NULL);
932 if (file && !IS_ERR(file))
933 rc1 = filp_close(file, 0);
940 EXPORT_SYMBOL(llog_put_cat_list);
942 static int llog_lvfs_declare_create(const struct lu_env *env,
943 struct llog_handle *res,
949 static int llog_lvfs_declare_write_rec(const struct lu_env *env,
950 struct llog_handle *loghandle,
951 struct llog_rec_hdr *rec,
952 int idx, struct thandle *th)
957 struct llog_operations llog_lvfs_ops = {
958 .lop_write_rec = llog_lvfs_write_rec,
959 .lop_next_block = llog_lvfs_next_block,
960 .lop_prev_block = llog_lvfs_prev_block,
961 .lop_read_header = llog_lvfs_read_header,
962 .lop_create = llog_lvfs_create,
963 .lop_destroy = llog_lvfs_destroy,
964 .lop_close = llog_lvfs_close,
965 .lop_open = llog_lvfs_open,
966 .lop_exist = llog_lvfs_exist,
967 .lop_declare_create = llog_lvfs_declare_create,
968 .lop_declare_write_rec = llog_lvfs_declare_write_rec,
970 EXPORT_SYMBOL(llog_lvfs_ops);
971 #else /* !__KERNEL__ */
972 int llog_get_cat_list(struct obd_device *disk_obd,
973 char *name, int idx, int count,
974 struct llog_catid *idarray)
980 int llog_put_cat_list(struct obd_device *disk_obd,
981 char *name, int idx, int count,
982 struct llog_catid *idarray)
988 struct llog_operations llog_lvfs_ops = {};