2 * -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
3 * vim:expandtab:shiftwidth=8:tabstop=8:
7 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 only,
11 * as published by the Free Software Foundation.
13 * This program is distributed in the hope that it will be useful, but
14 * WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * General Public License version 2 for more details (a copy is included
17 * in the LICENSE file that accompanied this code).
19 * You should have received a copy of the GNU General Public License
20 * version 2 along with this program; If not, see [sun.com URL with a
23 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
24 * CA 95054 USA or visit www.sun.com if you need additional information or
30 * Copyright 2008 Sun Microsystems, Inc. All rights reserved
31 * Use is subject to license terms.
34 * This file is part of Lustre, http://www.lustre.org/
35 * Lustre is a trademark of Sun Microsystems, Inc.
37 * lustre/obdfilter/filter.c
39 * Author: Peter Braam <braam@clusterfs.com>
40 * Author: Andreas Dilger <adilger@clusterfs.com>
44 * Invariant: Get O/R i_mutex for lookup, if needed, before any journal ops
45 * (which need to get journal_lock, may block if journal full).
47 * Invariant: Call filter_start_transno() before any journal ops to avoid the
48 * same deadlock problem. We can (and want) to get rid of the
49 * transno sem in favour of the dir/inode i_mutex to avoid single
50 * threaded operation on the OST.
53 #define DEBUG_SUBSYSTEM S_FILTER
55 #ifndef AUTOCONF_INCLUDED
56 #include <linux/config.h>
58 #include <linux/module.h>
60 #include <linux/dcache.h>
61 #include <linux/init.h>
62 #include <linux/version.h>
63 #include <linux/sched.h>
64 #include <linux/mount.h>
65 #include <linux/buffer_head.h>
67 #include <obd_cksum.h>
68 #include <obd_class.h>
70 #include <lustre_dlm.h>
71 #include <lustre_fsfilt.h>
72 #include <lprocfs_status.h>
73 #include <lustre_log.h>
74 #include <lustre_commit_confd.h>
75 #include <libcfs/list.h>
76 #include <lustre_disk.h>
77 #include <lustre_quota.h>
78 #include <linux/slab.h>
79 #include <lustre_param.h>
81 #include "filter_internal.h"
83 /* Group 0 is no longer a legal group, to catch uninitialized IDs */
84 #define FILTER_MIN_GROUPS FILTER_GROUP_MDS0
85 static struct lvfs_callback_ops filter_lvfs_ops;
86 cfs_mem_cache_t *ll_fmd_cachep;
88 static void filter_commit_cb(struct obd_device *obd, __u64 transno,
89 void *cb_data, int error)
91 obd_transno_commit_cb(obd, transno, error);
94 /* Assumes caller has already pushed us into the kernel context. */
95 int filter_finish_transno(struct obd_export *exp, struct obd_trans_info *oti,
96 int rc, int force_sync)
98 struct filter_obd *filter = &exp->exp_obd->u.filter;
99 struct filter_export_data *fed = &exp->exp_filter_data;
100 struct lsd_client_data *lcd = fed->fed_lcd;
103 int err, log_pri = D_RPCTRACE;
105 /* Propagate error code. */
109 if (!exp->exp_obd->obd_replayable || oti == NULL)
112 /* we don't allocate new transnos for replayed requests */
113 if (oti->oti_transno == 0) {
114 spin_lock(&filter->fo_translock);
115 last_rcvd = le64_to_cpu(filter->fo_fsd->lsd_last_transno) + 1;
116 filter->fo_fsd->lsd_last_transno = cpu_to_le64(last_rcvd);
117 spin_unlock(&filter->fo_translock);
118 oti->oti_transno = last_rcvd;
120 spin_lock(&filter->fo_translock);
121 last_rcvd = oti->oti_transno;
122 if (last_rcvd > le64_to_cpu(filter->fo_fsd->lsd_last_transno))
123 filter->fo_fsd->lsd_last_transno =
124 cpu_to_le64(last_rcvd);
125 spin_unlock(&filter->fo_translock);
127 lcd->lcd_last_transno = cpu_to_le64(last_rcvd);
129 /* could get xid from oti, if it's ever needed */
130 lcd->lcd_last_xid = 0;
132 off = fed->fed_lr_off;
134 CERROR("%s: client idx %d is %lld\n", exp->exp_obd->obd_name,
135 fed->fed_lr_idx, fed->fed_lr_off);
139 force_sync = fsfilt_add_journal_cb(exp->exp_obd,
145 err = fsfilt_write_record(exp->exp_obd, filter->fo_rcvd_filp,
146 lcd, sizeof(*lcd), &off,
147 force_sync | exp->exp_need_sync);
149 filter_commit_cb(exp->exp_obd, last_rcvd, NULL, err);
157 CDEBUG(log_pri, "wrote trans "LPU64" for client %s at #%d: err = %d\n",
158 last_rcvd, lcd->lcd_uuid, fed->fed_lr_idx, err);
163 void f_dput(struct dentry *dentry)
165 /* Can't go inside filter_ddelete because it can block */
166 CDEBUG(D_INODE, "putting %s: %p, count = %d\n",
167 dentry->d_name.name, dentry, atomic_read(&dentry->d_count) - 1);
168 LASSERT(atomic_read(&dentry->d_count) > 0);
173 static void init_brw_stats(struct brw_stats *brw_stats)
176 for (i = 0; i < BRW_LAST; i++)
177 spin_lock_init(&brw_stats->hist[i].oh_lock);
180 static int lprocfs_init_rw_stats(struct obd_device *obd,
181 struct lprocfs_stats **stats)
185 num_stats = (sizeof(*obd->obd_type->typ_dt_ops) / sizeof(void *)) +
186 LPROC_FILTER_LAST - 1;
187 *stats = lprocfs_alloc_stats(num_stats, 0);
191 lprocfs_init_ops_stats(LPROC_FILTER_LAST, *stats);
192 lprocfs_counter_init(*stats, LPROC_FILTER_READ_BYTES,
193 LPROCFS_CNTR_AVGMINMAX, "read_bytes", "bytes");
194 lprocfs_counter_init(*stats, LPROC_FILTER_WRITE_BYTES,
195 LPROCFS_CNTR_AVGMINMAX, "write_bytes", "bytes");
200 /* brw_stats are 2128, ops are 3916, ldlm are 204, so 6248 bytes per client,
201 plus the procfs overhead :( */
202 static int filter_export_stats_init(struct obd_device *obd,
203 struct obd_export *exp,
206 struct filter_export_data *fed = &exp->exp_filter_data;
210 init_brw_stats(&fed->fed_brw_stats);
212 if (obd_uuid_equals(&exp->exp_client_uuid, &obd->obd_uuid))
213 /* Self-export gets no proc entry */
216 rc = lprocfs_exp_setup(exp, client_nid, &newnid);
221 struct nid_stat *tmp = exp->exp_nid_stats;
222 LASSERT(tmp != NULL);
224 OBD_ALLOC(tmp->nid_brw_stats, sizeof(struct brw_stats));
225 if (tmp->nid_brw_stats == NULL)
228 init_brw_stats(tmp->nid_brw_stats);
229 rc = lprocfs_seq_create(exp->exp_nid_stats->nid_proc, "brw_stats",
230 0644, &filter_per_nid_stats_fops,
233 CWARN("Error adding the brw_stats file\n");
235 rc = lprocfs_init_rw_stats(obd, &exp->exp_nid_stats->nid_stats);
239 rc = lprocfs_register_stats(tmp->nid_proc, "stats",
248 /* Add client data to the FILTER. We use a bitmap to locate a free space
249 * in the last_rcvd file if cl_idx is -1 (i.e. a new client).
250 * Otherwise, we have just read the data from the last_rcvd file and
251 * we know its offset. */
252 static int filter_client_add(struct obd_device *obd, struct obd_export *exp,
255 struct filter_obd *filter = &obd->u.filter;
256 struct filter_export_data *fed = &exp->exp_filter_data;
257 unsigned long *bitmap = filter->fo_last_rcvd_slots;
258 int new_client = (cl_idx == -1);
262 LASSERT(bitmap != NULL);
263 LASSERTF(cl_idx > -2, "%d\n", cl_idx);
266 if (strcmp(fed->fed_lcd->lcd_uuid, obd->obd_uuid.uuid) == 0)
269 /* the bitmap operations can handle cl_idx > sizeof(long) * 8, so
270 * there's no need for extra complication here
273 cl_idx = find_first_zero_bit(bitmap, LR_MAX_CLIENTS);
275 if (cl_idx >= LR_MAX_CLIENTS) {
276 CERROR("no room for %u client - fix LR_MAX_CLIENTS\n",
280 if (test_and_set_bit(cl_idx, bitmap)) {
281 cl_idx = find_next_zero_bit(bitmap, LR_MAX_CLIENTS,
286 if (test_and_set_bit(cl_idx, bitmap)) {
287 CERROR("FILTER client %d: bit already set in bitmap!\n",
293 fed->fed_lr_idx = cl_idx;
294 fed->fed_lr_off = le32_to_cpu(filter->fo_fsd->lsd_client_start) +
295 cl_idx * le16_to_cpu(filter->fo_fsd->lsd_client_size);
296 LASSERTF(fed->fed_lr_off > 0, "fed_lr_off = %llu\n", fed->fed_lr_off);
298 CDEBUG(D_INFO, "client at index %d (%llu) with UUID '%s' added\n",
299 fed->fed_lr_idx, fed->fed_lr_off, fed->fed_lcd->lcd_uuid);
302 struct lvfs_run_ctxt saved;
303 loff_t off = fed->fed_lr_off;
307 CDEBUG(D_INFO, "writing client lcd at idx %u (%llu) (len %u)\n",
308 fed->fed_lr_idx,off,(unsigned int)sizeof(*fed->fed_lcd));
310 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
311 /* Transaction needed to fix bug 1403 */
312 handle = fsfilt_start(obd,
313 filter->fo_rcvd_filp->f_dentry->d_inode,
314 FSFILT_OP_SETATTR, NULL);
315 if (IS_ERR(handle)) {
316 rc = PTR_ERR(handle);
317 CERROR("unable to start transaction: rc %d\n", rc);
319 rc = fsfilt_add_journal_cb(obd, 0, handle,
320 target_client_add_cb, exp);
322 spin_lock(&exp->exp_lock);
323 exp->exp_need_sync = 1;
324 spin_unlock(&exp->exp_lock);
326 rc = fsfilt_write_record(obd, filter->fo_rcvd_filp,
328 sizeof(*fed->fed_lcd),
329 &off, rc /* sync if no cb */);
331 filter->fo_rcvd_filp->f_dentry->d_inode,
334 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
337 CERROR("error writing %s client idx %u: rc %d\n",
338 LAST_RCVD, fed->fed_lr_idx, rc);
345 static int filter_client_free(struct obd_export *exp)
347 struct filter_export_data *fed = &exp->exp_filter_data;
348 struct filter_obd *filter = &exp->exp_obd->u.filter;
349 struct obd_device *obd = exp->exp_obd;
350 struct lsd_client_data zero_lcd;
351 struct lvfs_run_ctxt saved;
356 if (fed->fed_lcd == NULL)
359 /* XXX if lcd_uuid were a real obd_uuid, I could use obd_uuid_equals */
360 if (strcmp(fed->fed_lcd->lcd_uuid, obd->obd_uuid.uuid ) == 0)
363 CDEBUG(D_INFO, "freeing client at idx %u, offset %lld with UUID '%s'\n",
364 fed->fed_lr_idx, fed->fed_lr_off, fed->fed_lcd->lcd_uuid);
366 LASSERT(filter->fo_last_rcvd_slots != NULL);
368 off = fed->fed_lr_off;
370 /* Don't clear fed_lr_idx here as it is likely also unset. At worst
371 * we leak a client slot that will be cleaned on the next recovery. */
373 CERROR("%s: client idx %d has med_off %lld\n",
374 obd->obd_name, fed->fed_lr_idx, off);
375 GOTO(free, rc = -EINVAL);
378 /* Clear the bit _after_ zeroing out the client so we don't
379 race with filter_client_add and zero out new clients.*/
380 if (!test_bit(fed->fed_lr_idx, filter->fo_last_rcvd_slots)) {
381 CERROR("FILTER client %u: bit already clear in bitmap!!\n",
386 if (!(exp->exp_flags & OBD_OPT_FAILOVER)) {
387 memset(&zero_lcd, 0, sizeof zero_lcd);
388 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
389 rc = fsfilt_write_record(obd, filter->fo_rcvd_filp, &zero_lcd,
390 sizeof(zero_lcd), &off,
391 (!exp->exp_libclient ||
392 exp->exp_need_sync));
394 /* update server's transno */
395 filter_update_server_data(obd, filter->fo_rcvd_filp,
397 !exp->exp_libclient);
398 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
400 CDEBUG(rc == 0 ? D_INFO : D_ERROR,
401 "zeroing out client %s at idx %u (%llu) in %s rc %d\n",
402 fed->fed_lcd->lcd_uuid, fed->fed_lr_idx, fed->fed_lr_off,
406 if (!test_and_clear_bit(fed->fed_lr_idx, filter->fo_last_rcvd_slots)) {
407 CERROR("FILTER client %u: bit already clear in bitmap!!\n",
414 OBD_FREE_PTR(fed->fed_lcd);
420 /* drop fmd reference, free it if last ref. must be called with fed_lock held.*/
421 static inline void filter_fmd_put_nolock(struct filter_export_data *fed,
422 struct filter_mod_data *fmd)
424 LASSERT_SPIN_LOCKED(&fed->fed_lock);
425 if (--fmd->fmd_refcount == 0) {
426 /* XXX when we have persistent reservations and the handle
427 * is stored herein we need to drop it here. */
428 fed->fed_mod_count--;
429 list_del(&fmd->fmd_list);
430 OBD_SLAB_FREE(fmd, ll_fmd_cachep, sizeof(*fmd));
434 /* drop fmd reference, free it if last ref */
435 void filter_fmd_put(struct obd_export *exp, struct filter_mod_data *fmd)
437 struct filter_export_data *fed;
442 fed = &exp->exp_filter_data;
443 spin_lock(&fed->fed_lock);
444 filter_fmd_put_nolock(fed, fmd); /* caller reference */
445 spin_unlock(&fed->fed_lock);
448 /* expire entries from the end of the list if there are too many
449 * or they are too old */
450 static void filter_fmd_expire_nolock(struct filter_obd *filter,
451 struct filter_export_data *fed,
452 struct filter_mod_data *keep)
454 struct filter_mod_data *fmd, *tmp;
456 list_for_each_entry_safe(fmd, tmp, &fed->fed_mod_list, fmd_list) {
460 if (time_before(jiffies, fmd->fmd_expire) &&
461 fed->fed_mod_count < filter->fo_fmd_max_num)
464 list_del_init(&fmd->fmd_list);
465 filter_fmd_put_nolock(fed, fmd); /* list reference */
469 void filter_fmd_expire(struct obd_export *exp)
471 spin_lock(&exp->exp_filter_data.fed_lock);
472 filter_fmd_expire_nolock(&exp->exp_obd->u.filter,
473 &exp->exp_filter_data, NULL);
474 spin_unlock(&exp->exp_filter_data.fed_lock);
477 /* find specified objid, group in export fmd list.
478 * caller must hold fed_lock and take fmd reference itself */
479 static struct filter_mod_data *filter_fmd_find_nolock(struct filter_obd *filter,
480 struct filter_export_data *fed,
481 obd_id objid, obd_gr group)
483 struct filter_mod_data *found = NULL, *fmd;
485 LASSERT_SPIN_LOCKED(&fed->fed_lock);
487 list_for_each_entry_reverse(fmd, &fed->fed_mod_list, fmd_list) {
488 if (fmd->fmd_id == objid && fmd->fmd_gr == group) {
490 list_del(&fmd->fmd_list);
491 list_add_tail(&fmd->fmd_list, &fed->fed_mod_list);
492 fmd->fmd_expire = jiffies + filter->fo_fmd_max_age;
497 filter_fmd_expire_nolock(filter, fed, found);
502 /* Find fmd based on objid and group, or return NULL if not found. */
503 struct filter_mod_data *filter_fmd_find(struct obd_export *exp,
504 obd_id objid, obd_gr group)
506 struct filter_mod_data *fmd;
508 spin_lock(&exp->exp_filter_data.fed_lock);
509 fmd = filter_fmd_find_nolock(&exp->exp_obd->u.filter,
510 &exp->exp_filter_data, objid, group);
512 fmd->fmd_refcount++; /* caller reference */
513 spin_unlock(&exp->exp_filter_data.fed_lock);
518 /* Find fmd based on objid and group, or create a new one if none is found.
519 * It is possible for this function to return NULL under memory pressure,
520 * or if objid = 0 is passed (which will only cause old entries to expire).
521 * Currently this is not fatal because any fmd state is transient and
522 * may also be freed when it gets sufficiently old. */
523 struct filter_mod_data *filter_fmd_get(struct obd_export *exp,
524 obd_id objid, obd_gr group)
526 struct filter_export_data *fed = &exp->exp_filter_data;
527 struct filter_mod_data *found = NULL, *fmd_new = NULL;
529 OBD_SLAB_ALLOC(fmd_new, ll_fmd_cachep, CFS_ALLOC_IO, sizeof(*fmd_new));
531 spin_lock(&fed->fed_lock);
532 found = filter_fmd_find_nolock(&exp->exp_obd->u.filter,fed,objid,group);
535 list_add_tail(&fmd_new->fmd_list, &fed->fed_mod_list);
536 fmd_new->fmd_id = objid;
537 fmd_new->fmd_gr = group;
538 fmd_new->fmd_refcount++; /* list reference */
540 fed->fed_mod_count++;
542 OBD_SLAB_FREE(fmd_new, ll_fmd_cachep, sizeof(*fmd_new));
546 found->fmd_refcount++; /* caller reference */
547 found->fmd_expire = jiffies +
548 exp->exp_obd->u.filter.fo_fmd_max_age;
551 spin_unlock(&fed->fed_lock);
557 /* drop fmd list reference so it will disappear when last reference is put.
558 * This isn't so critical because it would in fact only affect the one client
559 * that is doing the unlink and at worst we have an stale entry referencing
560 * an object that should never be used again. */
561 static void filter_fmd_drop(struct obd_export *exp, obd_id objid, obd_gr group)
563 struct filter_mod_data *found = NULL;
565 spin_lock(&exp->exp_filter_data.fed_lock);
566 found = filter_fmd_find_nolock(&exp->exp_filter_data, objid, group);
568 list_del_init(&found->fmd_list);
569 filter_fmd_put_nolock(&exp->exp_filter_data, found);
571 spin_unlock(&exp->exp_filter_data.fed_lock);
574 #define filter_fmd_drop(exp, objid, group)
577 /* remove all entries from fmd list */
578 static void filter_fmd_cleanup(struct obd_export *exp)
580 struct filter_export_data *fed = &exp->exp_filter_data;
581 struct filter_mod_data *fmd = NULL, *tmp;
583 spin_lock(&fed->fed_lock);
584 list_for_each_entry_safe(fmd, tmp, &fed->fed_mod_list, fmd_list) {
585 list_del_init(&fmd->fmd_list);
586 filter_fmd_put_nolock(fed, fmd);
588 spin_unlock(&fed->fed_lock);
591 static int filter_init_export(struct obd_export *exp)
593 spin_lock_init(&exp->exp_filter_data.fed_lock);
594 CFS_INIT_LIST_HEAD(&exp->exp_filter_data.fed_mod_list);
596 spin_lock(&exp->exp_lock);
597 exp->exp_connecting = 1;
598 spin_unlock(&exp->exp_lock);
603 static int filter_free_server_data(struct filter_obd *filter)
605 OBD_FREE(filter->fo_fsd, sizeof(*filter->fo_fsd));
606 filter->fo_fsd = NULL;
607 OBD_FREE(filter->fo_last_rcvd_slots, LR_MAX_CLIENTS / 8);
608 filter->fo_last_rcvd_slots = NULL;
612 /* assumes caller is already in kernel ctxt */
613 int filter_update_server_data(struct obd_device *obd, struct file *filp,
614 struct lr_server_data *fsd, int force_sync)
620 CDEBUG(D_INODE, "server uuid : %s\n", fsd->lsd_uuid);
621 CDEBUG(D_INODE, "server last_rcvd : "LPU64"\n",
622 le64_to_cpu(fsd->lsd_last_transno));
623 CDEBUG(D_INODE, "server last_mount: "LPU64"\n",
624 le64_to_cpu(fsd->lsd_mount_count));
626 fsd->lsd_compat14 = fsd->lsd_last_transno;
627 rc = fsfilt_write_record(obd, filp, fsd, sizeof(*fsd), &off, force_sync);
629 CERROR("error writing lr_server_data: rc = %d\n", rc);
634 int filter_update_last_objid(struct obd_device *obd, obd_gr group,
637 struct filter_obd *filter = &obd->u.filter;
643 if (filter->fo_last_objid_files[group] == NULL) {
644 CERROR("Object group "LPU64" not fully setup; not updating "
645 "last_objid\n", group);
649 CDEBUG(D_INODE, "%s: server last_objid for group "LPU64": "LPU64"\n",
650 obd->obd_name, group, filter->fo_last_objids[group]);
652 tmp = cpu_to_le64(filter->fo_last_objids[group]);
653 rc = fsfilt_write_record(obd, filter->fo_last_objid_files[group],
654 &tmp, sizeof(tmp), &off, force_sync);
656 CERROR("error writing group "LPU64" last objid: rc = %d\n",
660 extern int ost_handle(struct ptlrpc_request *req);
661 /* assumes caller has already in kernel ctxt */
662 static int filter_init_server_data(struct obd_device *obd, struct file * filp)
664 struct filter_obd *filter = &obd->u.filter;
665 struct lr_server_data *fsd;
666 struct lsd_client_data *lcd = NULL;
667 struct inode *inode = filp->f_dentry->d_inode;
668 unsigned long last_rcvd_size = i_size_read(inode);
674 /* ensure padding in the struct is the correct size */
675 CLASSERT (offsetof(struct lr_server_data, lsd_padding) +
676 sizeof(fsd->lsd_padding) == LR_SERVER_SIZE);
677 CLASSERT (offsetof(struct lsd_client_data, lcd_padding) +
678 sizeof(lcd->lcd_padding) == LR_CLIENT_SIZE);
680 OBD_ALLOC(fsd, sizeof(*fsd));
683 filter->fo_fsd = fsd;
685 OBD_ALLOC(filter->fo_last_rcvd_slots, LR_MAX_CLIENTS / 8);
686 if (filter->fo_last_rcvd_slots == NULL) {
687 OBD_FREE(fsd, sizeof(*fsd));
691 if (last_rcvd_size == 0) {
692 LCONSOLE_WARN("%s: new disk, initializing\n", obd->obd_name);
694 memcpy(fsd->lsd_uuid, obd->obd_uuid.uuid,sizeof(fsd->lsd_uuid));
695 fsd->lsd_last_transno = 0;
696 mount_count = fsd->lsd_mount_count = 0;
697 fsd->lsd_server_size = cpu_to_le32(LR_SERVER_SIZE);
698 fsd->lsd_client_start = cpu_to_le32(LR_CLIENT_START);
699 fsd->lsd_client_size = cpu_to_le16(LR_CLIENT_SIZE);
700 fsd->lsd_subdir_count = cpu_to_le16(FILTER_SUBDIR_COUNT);
701 filter->fo_subdir_count = FILTER_SUBDIR_COUNT;
702 fsd->lsd_feature_incompat = cpu_to_le32(OBD_INCOMPAT_OST);
704 rc = fsfilt_read_record(obd, filp, fsd, sizeof(*fsd), &off);
706 CDEBUG(D_INODE,"OBD filter: error reading %s: rc %d\n",
710 if (strcmp(fsd->lsd_uuid, obd->obd_uuid.uuid) != 0) {
711 LCONSOLE_ERROR_MSG(0x134, "Trying to start OBD %s "
712 "using the wrong disk %s. Were the "
713 "/dev/ assignments rearranged?\n",
714 obd->obd_uuid.uuid, fsd->lsd_uuid);
715 GOTO(err_fsd, rc = -EINVAL);
717 mount_count = le64_to_cpu(fsd->lsd_mount_count);
718 filter->fo_subdir_count = le16_to_cpu(fsd->lsd_subdir_count);
720 /* Assume old last_rcvd format unless I_C_LR is set */
721 if (!(fsd->lsd_feature_incompat &
722 cpu_to_le32(OBD_INCOMPAT_COMMON_LR)))
723 fsd->lsd_last_transno = fsd->lsd_compat14;
727 if (fsd->lsd_feature_incompat & ~cpu_to_le32(FILTER_INCOMPAT_SUPP)) {
728 CERROR("%s: unsupported incompat filesystem feature(s) %x\n",
729 obd->obd_name, le32_to_cpu(fsd->lsd_feature_incompat) &
730 ~FILTER_INCOMPAT_SUPP);
731 GOTO(err_fsd, rc = -EINVAL);
733 if (fsd->lsd_feature_rocompat & ~cpu_to_le32(FILTER_ROCOMPAT_SUPP)) {
734 CERROR("%s: unsupported read-only filesystem feature(s) %x\n",
735 obd->obd_name, le32_to_cpu(fsd->lsd_feature_rocompat) &
736 ~FILTER_ROCOMPAT_SUPP);
737 /* Do something like remount filesystem read-only */
738 GOTO(err_fsd, rc = -EINVAL);
741 CDEBUG(D_INODE, "%s: server last_transno : "LPU64"\n",
742 obd->obd_name, le64_to_cpu(fsd->lsd_last_transno));
743 CDEBUG(D_INODE, "%s: server mount_count: "LPU64"\n",
744 obd->obd_name, mount_count + 1);
745 CDEBUG(D_INODE, "%s: server data size: %u\n",
746 obd->obd_name, le32_to_cpu(fsd->lsd_server_size));
747 CDEBUG(D_INODE, "%s: per-client data start: %u\n",
748 obd->obd_name, le32_to_cpu(fsd->lsd_client_start));
749 CDEBUG(D_INODE, "%s: per-client data size: %u\n",
750 obd->obd_name, le32_to_cpu(fsd->lsd_client_size));
751 CDEBUG(D_INODE, "%s: server subdir_count: %u\n",
752 obd->obd_name, le16_to_cpu(fsd->lsd_subdir_count));
753 CDEBUG(D_INODE, "%s: last_rcvd clients: %lu\n", obd->obd_name,
754 last_rcvd_size <= le32_to_cpu(fsd->lsd_client_start) ? 0 :
755 (last_rcvd_size - le32_to_cpu(fsd->lsd_client_start)) /
756 le16_to_cpu(fsd->lsd_client_size));
758 if (!obd->obd_replayable) {
759 CWARN("%s: recovery support OFF\n", obd->obd_name);
763 for (cl_idx = 0, off = le32_to_cpu(fsd->lsd_client_start);
764 off < last_rcvd_size; cl_idx++) {
766 struct obd_export *exp;
767 struct filter_export_data *fed;
772 GOTO(err_client, rc = -ENOMEM);
775 /* Don't assume off is incremented properly by
776 * fsfilt_read_record(), in case sizeof(*lcd)
777 * isn't the same as fsd->lsd_client_size. */
778 off = le32_to_cpu(fsd->lsd_client_start) +
779 cl_idx * le16_to_cpu(fsd->lsd_client_size);
780 rc = fsfilt_read_record(obd, filp, lcd, sizeof(*lcd), &off);
782 CERROR("error reading FILT %s idx %d off %llu: rc %d\n",
783 LAST_RCVD, cl_idx, off, rc);
784 break; /* read error shouldn't cause startup to fail */
787 if (lcd->lcd_uuid[0] == '\0') {
788 CDEBUG(D_INFO, "skipping zeroed client at offset %d\n",
793 last_rcvd = le64_to_cpu(lcd->lcd_last_transno);
795 /* These exports are cleaned up by filter_disconnect(), so they
796 * need to be set up like real exports as filter_connect() does.
798 exp = class_new_export(obd, (struct obd_uuid *)lcd->lcd_uuid);
800 CDEBUG(D_HA, "RCVRNG CLIENT uuid: %s idx: %d lr: "LPU64
801 " srv lr: "LPU64"\n", lcd->lcd_uuid, cl_idx,
802 last_rcvd, le64_to_cpu(fsd->lsd_last_transno));
804 if (PTR_ERR(exp) == -EALREADY) {
805 /* export already exists, zero out this one */
806 CERROR("Zeroing out duplicate export due to "
808 lcd->lcd_uuid[0] = '\0';
810 GOTO(err_client, rc = PTR_ERR(exp));
813 fed = &exp->exp_filter_data;
815 fed->fed_group = 0; /* will be assigned at connect */
816 filter_export_stats_init(obd, exp, NULL);
817 rc = filter_client_add(obd, exp, cl_idx);
818 /* can't fail for existing client */
819 LASSERTF(rc == 0, "rc = %d\n", rc);
822 spin_lock(&exp->exp_lock);
823 exp->exp_connecting = 0;
824 exp->exp_in_recovery = 0;
825 spin_unlock(&exp->exp_lock);
826 obd->obd_max_recoverable_clients++;
827 class_export_put(exp);
830 /* Need to check last_rcvd even for duplicated exports. */
831 CDEBUG(D_OTHER, "client at idx %d has last_rcvd = "LPU64"\n",
834 if (last_rcvd > le64_to_cpu(fsd->lsd_last_transno))
835 fsd->lsd_last_transno = cpu_to_le64(last_rcvd);
841 obd->obd_last_committed = le64_to_cpu(fsd->lsd_last_transno);
843 target_recovery_init(obd, ost_handle);
846 filter->fo_mount_count = mount_count + 1;
847 fsd->lsd_mount_count = cpu_to_le64(filter->fo_mount_count);
849 /* save it, so mount count and last_transno is current */
850 rc = filter_update_server_data(obd, filp, filter->fo_fsd, 1);
852 GOTO(err_client, rc);
857 target_recovery_fini(obd);
859 filter_free_server_data(filter);
863 static int filter_cleanup_groups(struct obd_device *obd)
865 struct filter_obd *filter = &obd->u.filter;
867 struct dentry *dentry;
871 if (filter->fo_dentry_O_groups != NULL) {
872 for (i = 0; i < filter->fo_group_count; i++) {
873 dentry = filter->fo_dentry_O_groups[i];
877 OBD_FREE(filter->fo_dentry_O_groups,
878 filter->fo_group_count *
879 sizeof(*filter->fo_dentry_O_groups));
880 filter->fo_dentry_O_groups = NULL;
882 if (filter->fo_last_objid_files != NULL) {
883 for (i = 0; i < filter->fo_group_count; i++) {
884 filp = filter->fo_last_objid_files[i];
888 OBD_FREE(filter->fo_last_objid_files,
889 filter->fo_group_count *
890 sizeof(*filter->fo_last_objid_files));
891 filter->fo_last_objid_files = NULL;
893 if (filter->fo_dentry_O_sub != NULL) {
894 for (i = 0; i < filter->fo_group_count; i++) {
895 for (j = 0; j < filter->fo_subdir_count; j++) {
896 dentry = filter->fo_dentry_O_sub[i].dentry[j];
901 OBD_FREE(filter->fo_dentry_O_sub,
902 filter->fo_group_count *
903 sizeof(*filter->fo_dentry_O_sub));
904 filter->fo_dentry_O_sub = NULL;
906 if (filter->fo_last_objids != NULL) {
907 OBD_FREE(filter->fo_last_objids,
908 filter->fo_group_count *
909 sizeof(*filter->fo_last_objids));
910 filter->fo_last_objids = NULL;
912 if (filter->fo_dentry_O != NULL) {
913 f_dput(filter->fo_dentry_O);
914 filter->fo_dentry_O = NULL;
919 static int filter_update_last_group(struct obd_device *obd, int group)
921 struct filter_obd *filter = &obd->u.filter;
922 struct file *filp = NULL;
923 int last_group = 0, rc;
927 if (group <= filter->fo_committed_group)
930 filp = filp_open("LAST_GROUP", O_RDWR, 0700);
934 CERROR("cannot open LAST_GROUP: rc = %d\n", rc);
938 rc = fsfilt_read_record(obd, filp, &last_group, sizeof(__u32), &off);
940 CDEBUG(D_INODE, "error reading LAST_GROUP: rc %d\n",rc);
943 LASSERT(off == 0 || last_group >= FILTER_MIN_GROUPS);
944 CDEBUG(D_INODE, "%s: previous %d, new %d\n",
945 obd->obd_name, last_group, group);
949 /* must be sync: bXXXX */
950 rc = fsfilt_write_record(obd, filp, &last_group, sizeof(__u32), &off, 1);
952 CDEBUG(D_INODE, "error updating LAST_GROUP: rc %d\n", rc);
956 filter->fo_committed_group = group;
963 static int filter_read_group_internal(struct obd_device *obd, int group,
966 struct filter_obd *filter = &obd->u.filter;
967 __u64 *new_objids = NULL;
968 struct filter_subdirs *new_subdirs = NULL, *tmp_subdirs = NULL;
969 struct dentry **new_groups = NULL;
970 struct file **new_files = NULL;
971 struct dentry *dentry;
973 int old_count = filter->fo_group_count, rc, stage = 0, i;
979 snprintf(name, 24, "%d", group);
983 dentry = ll_lookup_one_len(name, filter->fo_dentry_O,
985 if (IS_ERR(dentry)) {
986 CERROR("Cannot lookup expected object group %d: %ld\n",
987 group, PTR_ERR(dentry));
988 RETURN(PTR_ERR(dentry));
991 dentry = simple_mkdir(filter->fo_dentry_O, filter->fo_vfsmnt,
993 if (IS_ERR(dentry)) {
994 CERROR("cannot lookup/create O/%s: rc = %ld\n", name,
996 RETURN(PTR_ERR(dentry));
1001 snprintf(name, 24, "O/%d/LAST_ID", group);
1003 filp = filp_open(name, O_CREAT | O_RDWR, 0700);
1005 CERROR("cannot create %s: rc = %ld\n", name, PTR_ERR(filp));
1006 GOTO(cleanup, rc = PTR_ERR(filp));
1010 rc = fsfilt_read_record(obd, filp, &last_objid, sizeof(__u64), &off);
1012 CDEBUG(D_INODE, "error reading %s: rc %d\n", name, rc);
1016 if (filter->fo_subdir_count) {
1017 OBD_ALLOC(tmp_subdirs, sizeof(*tmp_subdirs));
1018 if (tmp_subdirs == NULL)
1019 GOTO(cleanup, rc = -ENOMEM);
1022 for (i = 0; i < filter->fo_subdir_count; i++) {
1024 snprintf(dir, sizeof(dir), "d%u", i);
1026 tmp_subdirs->dentry[i] = simple_mkdir(dentry,
1029 if (IS_ERR(tmp_subdirs->dentry[i])) {
1030 rc = PTR_ERR(tmp_subdirs->dentry[i]);
1031 CERROR("can't lookup/create O/%d/%s: rc = %d\n",
1036 CDEBUG(D_INODE, "got/created O/%d/%s: %p\n", group, dir,
1037 tmp_subdirs->dentry[i]);
1041 /* 'group' is an index; we need an array of length 'group + 1' */
1042 if (group + 1 > old_count) {
1043 OBD_ALLOC(new_objids, len * sizeof(*new_objids));
1044 OBD_ALLOC(new_subdirs, len * sizeof(*new_subdirs));
1045 OBD_ALLOC(new_groups, len * sizeof(*new_groups));
1046 OBD_ALLOC(new_files, len * sizeof(*new_files));
1048 if (new_objids == NULL || new_subdirs == NULL ||
1049 new_groups == NULL || new_files == NULL)
1050 GOTO(cleanup, rc = -ENOMEM);
1053 memcpy(new_objids, filter->fo_last_objids,
1054 old_count * sizeof(*new_objids));
1055 memcpy(new_subdirs, filter->fo_dentry_O_sub,
1056 old_count * sizeof(*new_subdirs));
1057 memcpy(new_groups, filter->fo_dentry_O_groups,
1058 old_count * sizeof(*new_groups));
1059 memcpy(new_files, filter->fo_last_objid_files,
1060 old_count * sizeof(*new_files));
1062 OBD_FREE(filter->fo_last_objids,
1063 old_count * sizeof(*new_objids));
1064 OBD_FREE(filter->fo_dentry_O_sub,
1065 old_count * sizeof(*new_subdirs));
1066 OBD_FREE(filter->fo_dentry_O_groups,
1067 old_count * sizeof(*new_groups));
1068 OBD_FREE(filter->fo_last_objid_files,
1069 old_count * sizeof(*new_files));
1071 filter->fo_last_objids = new_objids;
1072 filter->fo_dentry_O_sub = new_subdirs;
1073 filter->fo_dentry_O_groups = new_groups;
1074 filter->fo_last_objid_files = new_files;
1075 filter->fo_group_count = len;
1078 filter->fo_dentry_O_groups[group] = dentry;
1079 filter->fo_last_objid_files[group] = filp;
1080 if (filter->fo_subdir_count) {
1081 filter->fo_dentry_O_sub[group] = *tmp_subdirs;
1082 OBD_FREE(tmp_subdirs, sizeof(*tmp_subdirs));
1085 filter_update_last_group(obd, group);
1087 if (i_size_read(filp->f_dentry->d_inode) == 0) {
1088 filter->fo_last_objids[group] = FILTER_INIT_OBJID;
1089 rc = filter_update_last_objid(obd, group, 1);
1093 filter->fo_last_objids[group] = le64_to_cpu(last_objid);
1094 CDEBUG(D_INODE, "%s: server last_objid group %d: "LPU64"\n",
1095 obd->obd_name, group, last_objid);
1100 if (new_objids != NULL)
1101 OBD_FREE(new_objids, len * sizeof(*new_objids));
1102 if (new_subdirs != NULL)
1103 OBD_FREE(new_subdirs, len * sizeof(*new_subdirs));
1104 if (new_groups != NULL)
1105 OBD_FREE(new_groups, len * sizeof(*new_groups));
1106 if (new_files != NULL)
1107 OBD_FREE(new_files, len * sizeof(*new_files));
1109 if (filter->fo_subdir_count) {
1110 for (i = 0; i < filter->fo_subdir_count; i++) {
1111 if (tmp_subdirs->dentry[i] != NULL)
1112 dput(tmp_subdirs->dentry[i]);
1114 OBD_FREE(tmp_subdirs, sizeof(*tmp_subdirs));
1117 filp_close(filp, 0);
1124 static int filter_read_groups(struct obd_device *obd, int last_group,
1127 struct filter_obd *filter = &obd->u.filter;
1128 int old_count, group, rc = 0;
1130 down(&filter->fo_init_lock);
1131 old_count = filter->fo_group_count;
1132 for (group = old_count; group <= last_group; group++) {
1134 continue; /* no group zero */
1136 rc = filter_read_group_internal(obd, group, create);
1140 up(&filter->fo_init_lock);
1144 /* FIXME: object groups */
1145 static int filter_prep_groups(struct obd_device *obd)
1147 struct filter_obd *filter = &obd->u.filter;
1148 struct dentry *dentry, *O_dentry;
1150 int last_group, rc = 0, cleanup_phase = 0;
1154 O_dentry = simple_mkdir(current->fs->pwd, filter->fo_vfsmnt,
1156 CDEBUG(D_INODE, "got/created O: %p\n", O_dentry);
1157 if (IS_ERR(O_dentry)) {
1158 rc = PTR_ERR(O_dentry);
1159 CERROR("cannot open/create O: rc = %d\n", rc);
1162 filter->fo_dentry_O = O_dentry;
1163 cleanup_phase = 1; /* O_dentry */
1165 /* Lookup "R" to tell if we're on an old OST FS and need to convert
1166 * from O/R/<dir>/<objid> to O/0/<dir>/<objid>. This can be removed
1167 * some time post 1.0 when all old-style OSTs have converted along
1168 * with the init_objid hack. */
1169 dentry = ll_lookup_one_len("R", O_dentry, 1);
1171 GOTO(cleanup, rc = PTR_ERR(dentry));
1172 if (dentry->d_inode && S_ISDIR(dentry->d_inode->i_mode)) {
1173 struct dentry *O0_dentry = lookup_one_len("0", O_dentry, 1);
1176 CWARN("converting OST to new object layout\n");
1177 if (IS_ERR(O0_dentry)) {
1178 rc = PTR_ERR(O0_dentry);
1179 CERROR("error looking up O/0: rc %d\n", rc);
1180 GOTO(cleanup_R, rc);
1183 if (O0_dentry->d_inode) {
1184 CERROR("Both O/R and O/0 exist. Fix manually.\n");
1185 GOTO(cleanup_O0, rc = -EEXIST);
1188 LOCK_INODE_MUTEX(O_dentry->d_inode);
1189 rc = ll_vfs_rename(O_dentry->d_inode, dentry, filter->fo_vfsmnt,
1190 O_dentry->d_inode, O0_dentry,
1192 UNLOCK_INODE_MUTEX(O_dentry->d_inode);
1195 CERROR("error renaming O/R to O/0: rc %d\n", rc);
1196 GOTO(cleanup_O0, rc);
1198 filter->fo_fsd->lsd_feature_incompat |=
1199 cpu_to_le32(OBD_INCOMPAT_GROUPS);
1200 rc = filter_update_server_data(obd, filter->fo_rcvd_filp,
1202 GOTO(cleanup_O0, rc);
1214 cleanup_phase = 2; /* groups */
1216 /* we have to initialize all groups before first connections from
1217 * clients because they may send create/destroy for any group -bzzz */
1218 filp = filp_open("LAST_GROUP", O_CREAT | O_RDWR, 0700);
1220 CERROR("cannot create LAST_GROUP: rc = %ld\n", PTR_ERR(filp));
1221 GOTO(cleanup, rc = PTR_ERR(filp));
1223 cleanup_phase = 3; /* filp */
1225 rc = fsfilt_read_record(obd, filp, &last_group, sizeof(__u32), &off);
1227 CDEBUG(D_INODE, "error reading LAST_GROUP: rc %d\n", rc);
1231 last_group = FILTER_MIN_GROUPS;
1233 LASSERT(last_group >= FILTER_MIN_GROUPS);
1236 CWARN("%s: initialize groups [%d,%d]\n", obd->obd_name,
1237 FILTER_MIN_GROUPS, last_group);
1238 filter->fo_committed_group = last_group;
1239 rc = filter_read_groups(obd, last_group, 1);
1243 filp_close(filp, 0);
1247 switch (cleanup_phase) {
1249 filp_close(filp, 0);
1251 filter_cleanup_groups(obd);
1253 f_dput(filter->fo_dentry_O);
1254 filter->fo_dentry_O = NULL;
1262 /* setup the object store with correct subdirectories */
1263 static int filter_prep(struct obd_device *obd)
1265 struct lvfs_run_ctxt saved;
1266 struct filter_obd *filter = &obd->u.filter;
1268 struct inode *inode;
1272 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
1273 file = filp_open(LAST_RCVD, O_RDWR | O_CREAT | O_LARGEFILE, 0700);
1274 if (!file || IS_ERR(file)) {
1276 CERROR("OBD filter: cannot open/create %s: rc = %d\n",
1280 filter->fo_rcvd_filp = file;
1281 if (!S_ISREG(file->f_dentry->d_inode->i_mode)) {
1282 CERROR("%s is not a regular file!: mode = %o\n", LAST_RCVD,
1283 file->f_dentry->d_inode->i_mode);
1284 GOTO(err_filp, rc = -ENOENT);
1287 inode = file->f_dentry->d_parent->d_inode;
1288 /* We use i_op->unlink directly in filter_vfs_unlink() */
1289 if (!inode->i_op || !inode->i_op->create || !inode->i_op->unlink) {
1290 CERROR("%s: filesystem does not support create/unlink ops\n",
1292 GOTO(err_filp, rc = -EOPNOTSUPP);
1295 rc = filter_init_server_data(obd, file);
1297 CERROR("cannot read %s: rc = %d\n", LAST_RCVD, rc);
1300 /* open and create health check io file*/
1301 file = filp_open(HEALTH_CHECK, O_RDWR | O_CREAT, 0644);
1304 CERROR("OBD filter: cannot open/create %s rc = %d\n",
1306 GOTO(err_server_data, rc);
1308 filter->fo_health_check_filp = file;
1309 if (!S_ISREG(file->f_dentry->d_inode->i_mode)) {
1310 CERROR("%s is not a regular file!: mode = %o\n", HEALTH_CHECK,
1311 file->f_dentry->d_inode->i_mode);
1312 GOTO(err_health_check, rc = -ENOENT);
1314 rc = lvfs_check_io_health(obd, file);
1316 GOTO(err_health_check, rc);
1318 rc = filter_prep_groups(obd);
1320 GOTO(err_health_check, rc);
1322 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
1327 if (filp_close(filter->fo_health_check_filp, 0))
1328 CERROR("can't close %s after error\n", HEALTH_CHECK);
1329 filter->fo_health_check_filp = NULL;
1331 target_recovery_fini(obd);
1332 filter_free_server_data(filter);
1334 if (filp_close(filter->fo_rcvd_filp, 0))
1335 CERROR("can't close %s after error\n", LAST_RCVD);
1336 filter->fo_rcvd_filp = NULL;
1340 /* cleanup the filter: write last used object id to status file */
1341 static void filter_post(struct obd_device *obd)
1343 struct lvfs_run_ctxt saved;
1344 struct filter_obd *filter = &obd->u.filter;
1347 /* XXX: filter_update_lastobjid used to call fsync_dev. It might be
1348 * best to start a transaction with h_sync, because we removed this
1351 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
1352 rc = filter_update_server_data(obd, filter->fo_rcvd_filp,
1355 CERROR("error writing server data: rc = %d\n", rc);
1357 for (i = 1; i < filter->fo_group_count; i++) {
1358 rc = filter_update_last_objid(obd, i,
1359 (i == filter->fo_group_count - 1));
1361 CERROR("error writing group %d lastobjid: rc = %d\n",
1365 rc = filp_close(filter->fo_rcvd_filp, 0);
1366 filter->fo_rcvd_filp = NULL;
1368 CERROR("error closing %s: rc = %d\n", LAST_RCVD, rc);
1370 rc = filp_close(filter->fo_health_check_filp, 0);
1371 filter->fo_health_check_filp = NULL;
1373 CERROR("error closing %s: rc = %d\n", HEALTH_CHECK, rc);
1375 filter_cleanup_groups(obd);
1376 filter_free_server_data(filter);
1377 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
1379 filter_free_capa_keys(filter);
1380 cleanup_capa_hash(filter->fo_capa_hash);
1383 static void filter_set_last_id(struct filter_obd *filter,
1384 obd_id id, obd_gr group)
1386 LASSERT(filter->fo_fsd != NULL);
1387 LASSERT(group <= filter->fo_group_count);
1389 spin_lock(&filter->fo_objidlock);
1390 filter->fo_last_objids[group] = id;
1391 spin_unlock(&filter->fo_objidlock);
1394 obd_id filter_last_id(struct filter_obd *filter, obd_gr group)
1397 LASSERT(filter->fo_fsd != NULL);
1398 LASSERT(group <= filter->fo_group_count);
1400 /* FIXME: object groups */
1401 spin_lock(&filter->fo_objidlock);
1402 id = filter->fo_last_objids[group];
1403 spin_unlock(&filter->fo_objidlock);
1408 static int filter_lock_dentry(struct obd_device *obd, struct dentry *dparent)
1410 LOCK_INODE_MUTEX(dparent->d_inode);
1414 /* We never dget the object parent, so DON'T dput it either */
1415 struct dentry *filter_parent(struct obd_device *obd, obd_gr group, obd_id objid)
1417 struct filter_obd *filter = &obd->u.filter;
1418 struct filter_subdirs *subdirs;
1419 LASSERT(group < filter->fo_group_count); /* FIXME: object groups */
1421 if (group > 0 || filter->fo_subdir_count == 0)
1422 return filter->fo_dentry_O_groups[group];
1424 subdirs = &filter->fo_dentry_O_sub[group];
1425 return subdirs->dentry[objid & (filter->fo_subdir_count - 1)];
1428 /* We never dget the object parent, so DON'T dput it either */
1429 struct dentry *filter_parent_lock(struct obd_device *obd, obd_gr group,
1432 unsigned long now = jiffies;
1433 struct dentry *dparent = filter_parent(obd, group, objid);
1436 if (IS_ERR(dparent))
1438 if (dparent == NULL)
1439 return ERR_PTR(-ENOENT);
1441 rc = filter_lock_dentry(obd, dparent);
1442 fsfilt_check_slow(obd, now, "parent lock");
1443 return rc ? ERR_PTR(rc) : dparent;
1446 /* We never dget the object parent, so DON'T dput it either */
1447 static void filter_parent_unlock(struct dentry *dparent)
1449 UNLOCK_INODE_MUTEX(dparent->d_inode);
1452 /* How to get files, dentries, inodes from object id's.
1454 * If dir_dentry is passed, the caller has already locked the parent
1455 * appropriately for this operation (normally a write lock). If
1456 * dir_dentry is NULL, we do a read lock while we do the lookup to
1457 * avoid races with create/destroy and such changing the directory
1458 * internal to the filesystem code. */
1459 struct dentry *filter_fid2dentry(struct obd_device *obd,
1460 struct dentry *dir_dentry,
1461 obd_gr group, obd_id id)
1463 struct dentry *dparent = dir_dentry;
1464 struct dentry *dchild;
1469 if (OBD_FAIL_CHECK(OBD_FAIL_OST_ENOENT) &&
1470 obd->u.filter.fo_destroys_in_progress == 0) {
1471 /* don't fail lookups for orphan recovery, it causes
1472 * later LBUGs when objects still exist during precreate */
1473 CDEBUG(D_INFO, "*** obd_fail_loc=%x ***\n",OBD_FAIL_OST_ENOENT);
1474 RETURN(ERR_PTR(-ENOENT));
1477 CERROR("fatal: invalid object id 0\n");
1478 RETURN(ERR_PTR(-ESTALE));
1481 len = sprintf(name, LPU64, id);
1482 if (dir_dentry == NULL) {
1483 dparent = filter_parent_lock(obd, group, id);
1484 if (IS_ERR(dparent)) {
1485 CERROR("%s: error getting object "LPU64":"LPU64
1486 " parent: rc %ld\n", obd->obd_name,
1487 id, group, PTR_ERR(dparent));
1491 CDEBUG(D_INODE, "looking up object O/%.*s/%s\n",
1492 dparent->d_name.len, dparent->d_name.name, name);
1493 dchild = /*ll_*/lookup_one_len(name, dparent, len);
1494 if (dir_dentry == NULL)
1495 filter_parent_unlock(dparent);
1496 if (IS_ERR(dchild)) {
1497 CERROR("%s: child lookup error %ld\n", obd->obd_name,
1502 if (dchild->d_inode != NULL && is_bad_inode(dchild->d_inode)) {
1503 CERROR("%s: got bad object "LPU64" inode %lu\n",
1504 obd->obd_name, id, dchild->d_inode->i_ino);
1506 RETURN(ERR_PTR(-ENOENT));
1509 CDEBUG(D_INODE, "got child objid %s: %p, count = %d\n",
1510 name, dchild, atomic_read(&dchild->d_count));
1512 LASSERT(atomic_read(&dchild->d_count) > 0);
1517 static int filter_prepare_destroy(struct obd_device *obd, obd_id objid,
1520 struct lustre_handle lockh;
1521 int flags = LDLM_AST_DISCARD_DATA, rc;
1522 struct ldlm_res_id res_id;
1523 ldlm_policy_data_t policy = { .l_extent = { 0, OBD_OBJECT_EOF } };
1526 osc_build_res_name(objid, group, &res_id);
1527 /* Tell the clients that the object is gone now and that they should
1528 * throw away any cached pages. */
1529 rc = ldlm_cli_enqueue_local(obd->obd_namespace, &res_id, LDLM_EXTENT,
1530 &policy, LCK_PW, &flags, ldlm_blocking_ast,
1531 ldlm_completion_ast, NULL, NULL, 0, NULL,
1534 /* We only care about the side-effects, just drop the lock. */
1536 ldlm_lock_decref(&lockh, LCK_PW);
1541 /* This is vfs_unlink() without down(i_sem). If we call regular vfs_unlink()
1542 * we have 2.6 lock ordering issues with filter_commitrw_write() as it takes
1543 * i_sem before starting a handle, while filter_destroy() + vfs_unlink do the
1544 * reverse. Caller must take i_sem before starting the transaction and we
1545 * drop it here before the inode is removed from the dentry. bug 4180/6984 */
1546 int filter_vfs_unlink(struct inode *dir, struct dentry *dentry,
1547 struct vfsmount *mnt)
1552 /* don't need dir->i_zombie for 2.4, it is for rename/unlink of dir
1553 * itself we already hold dir->i_mutex for child create/unlink ops */
1554 LASSERT(dentry->d_inode != NULL);
1555 LASSERT(TRYLOCK_INODE_MUTEX(dir) == 0);
1556 LASSERT(TRYLOCK_INODE_MUTEX(dentry->d_inode) == 0);
1560 if (/*!dentry->d_inode ||*/dentry->d_parent->d_inode != dir)
1561 GOTO(out, rc = -ENOENT);
1563 rc = ll_permission(dir, MAY_WRITE | MAY_EXEC, NULL);
1568 GOTO(out, rc = -EPERM);
1570 /* check_sticky() */
1571 if ((dentry->d_inode->i_uid != current->fsuid && !capable(CAP_FOWNER))||
1572 IS_APPEND(dentry->d_inode) || IS_IMMUTABLE(dentry->d_inode))
1573 GOTO(out, rc = -EPERM);
1575 /* NOTE: This might need to go outside i_mutex, though it isn't clear if
1576 * that was done because of journal_start (which is already done
1577 * here) or some other ordering issue. */
1580 rc = ll_security_inode_unlink(dir, dentry, mnt);
1584 rc = dir->i_op->unlink(dir, dentry);
1586 /* need to drop i_mutex before we lose inode reference */
1587 UNLOCK_INODE_MUTEX(dentry->d_inode);
1594 /* Caller must hold LCK_PW on parent and push us into kernel context.
1595 * Caller must hold child i_mutex, we drop it always.
1596 * Caller is also required to ensure that dchild->d_inode exists. */
1597 static int filter_destroy_internal(struct obd_device *obd, obd_id objid,
1598 obd_gr group, struct dentry *dparent,
1599 struct dentry *dchild)
1601 struct inode *inode = dchild->d_inode;
1602 struct filter_obd *filter = &obd->u.filter;
1605 if (inode->i_nlink != 1 || atomic_read(&inode->i_count) != 1) {
1606 CERROR("destroying objid %.*s ino %lu nlink %lu count %d\n",
1607 dchild->d_name.len, dchild->d_name.name, inode->i_ino,
1608 (unsigned long)inode->i_nlink,
1609 atomic_read(&inode->i_count));
1612 rc = filter_vfs_unlink(dparent->d_inode, dchild, filter->fo_vfsmnt);
1614 CERROR("error unlinking objid %.*s: rc %d\n",
1615 dchild->d_name.len, dchild->d_name.name, rc);
1619 struct filter_intent_args {
1620 struct ldlm_lock **victim;
1625 static enum interval_iter filter_intent_cb(struct interval_node *n,
1628 struct ldlm_interval *node = (struct ldlm_interval *)n;
1629 struct filter_intent_args *arg = (struct filter_intent_args*)args;
1630 __u64 size = arg->size;
1631 struct ldlm_lock **v = arg->victim;
1632 struct ldlm_lock *lck;
1634 /* If the interval is lower than the current file size,
1636 if (interval_high(n) <= size)
1637 return INTERVAL_ITER_STOP;
1639 list_for_each_entry(lck, &node->li_group, l_sl_policy) {
1640 /* Don't send glimpse ASTs to liblustre clients.
1641 * They aren't listening for them, and they do
1642 * entirely synchronous I/O anyways. */
1643 if (lck->l_export == NULL ||
1644 lck->l_export->exp_libclient == 1)
1647 if (*arg->liblustre)
1648 *arg->liblustre = 0;
1651 *v = LDLM_LOCK_GET(lck);
1652 } else if ((*v)->l_policy_data.l_extent.start <
1653 lck->l_policy_data.l_extent.start) {
1655 *v = LDLM_LOCK_GET(lck);
1658 /* the same policy group - every lock has the
1659 * same extent, so needn't do it any more */
1663 return INTERVAL_ITER_CONT;
1666 static int filter_intent_policy(struct ldlm_namespace *ns,
1667 struct ldlm_lock **lockp, void *req_cookie,
1668 ldlm_mode_t mode, int flags, void *data)
1670 CFS_LIST_HEAD(rpc_list);
1671 struct ptlrpc_request *req = req_cookie;
1672 struct ldlm_lock *lock = *lockp, *l = NULL;
1673 struct ldlm_resource *res = lock->l_resource;
1674 ldlm_processing_policy policy;
1675 struct ost_lvb *res_lvb, *reply_lvb;
1676 struct ldlm_reply *rep;
1678 int idx, rc, tmpflags = 0, only_liblustre = 1;
1679 struct ldlm_interval_tree *tree;
1680 struct filter_intent_args arg;
1681 __u32 repsize[3] = { [MSG_PTLRPC_BODY_OFF] = sizeof(struct ptlrpc_body),
1682 [DLM_LOCKREPLY_OFF] = sizeof(*rep),
1683 [DLM_REPLY_REC_OFF] = sizeof(*reply_lvb) };
1686 policy = ldlm_get_processing_policy(res);
1687 LASSERT(policy != NULL);
1688 LASSERT(req != NULL);
1690 rc = lustre_pack_reply(req, 3, repsize, NULL);
1692 RETURN(req->rq_status = rc);
1694 rep = lustre_msg_buf(req->rq_repmsg, DLM_LOCKREPLY_OFF, sizeof(*rep));
1695 LASSERT(rep != NULL);
1697 reply_lvb = lustre_msg_buf(req->rq_repmsg, DLM_REPLY_REC_OFF,
1698 sizeof(*reply_lvb));
1699 LASSERT(reply_lvb != NULL);
1701 //fixup_handle_for_resent_req(req, lock, &lockh);
1703 /* If we grant any lock at all, it will be a whole-file read lock.
1704 * Call the extent policy function to see if our request can be
1705 * granted, or is blocked.
1706 * If the OST lock has LDLM_FL_HAS_INTENT set, it means a glimpse lock
1708 lock->l_policy_data.l_extent.start = 0;
1709 lock->l_policy_data.l_extent.end = OBD_OBJECT_EOF;
1710 lock->l_req_mode = LCK_PR;
1712 LASSERT(ns == res->lr_namespace);
1714 rc = policy(lock, &tmpflags, 0, &err, &rpc_list);
1715 check_res_locked(res);
1717 /* FIXME: we should change the policy function slightly, to not make
1718 * this list at all, since we just turn around and free it */
1719 while (!list_empty(&rpc_list)) {
1720 struct ldlm_lock *wlock =
1721 list_entry(rpc_list.next, struct ldlm_lock, l_cp_ast);
1722 LASSERT((lock->l_flags & LDLM_FL_AST_SENT) == 0);
1723 LASSERT(lock->l_flags & LDLM_FL_CP_REQD);
1724 lock->l_flags &= ~LDLM_FL_CP_REQD;
1725 list_del_init(&wlock->l_cp_ast);
1726 LDLM_LOCK_PUT(wlock);
1729 /* The lock met with no resistance; we're finished. */
1730 if (rc == LDLM_ITER_CONTINUE) {
1731 /* do not grant locks to the liblustre clients: they cannot
1732 * handle ASTs robustly. We need to do this while still
1733 * holding ns_lock to avoid the lock remaining on the res_link
1734 * list (and potentially being added to l_pending_list by an
1735 * AST) when we are going to drop this lock ASAP. */
1736 if (lock->l_export->exp_libclient ||
1737 OBD_FAIL_TIMEOUT(OBD_FAIL_LDLM_GLIMPSE, 2)) {
1738 ldlm_resource_unlink_lock(lock);
1739 err = ELDLM_LOCK_ABORTED;
1741 err = ELDLM_LOCK_REPLACED;
1747 /* Do not grant any lock, but instead send GL callbacks. The extent
1748 * policy nicely created a list of all PW locks for us. We will choose
1749 * the highest of those which are larger than the size in the LVB, if
1750 * any, and perform a glimpse callback. */
1751 res_lvb = res->lr_lvb_data;
1752 LASSERT(res_lvb != NULL);
1753 *reply_lvb = *res_lvb;
1756 * ->ns_lock guarantees that no new locks are granted, and,
1757 * therefore, that res->lr_lvb_data cannot increase beyond the
1758 * end of already granted lock. As a result, it is safe to
1759 * check against "stale" reply_lvb->lvb_size value without
1762 arg.size = reply_lvb->lvb_size;
1764 arg.liblustre = &only_liblustre;
1765 for (idx = 0; idx < LCK_MODE_NUM; idx++) {
1766 tree = &res->lr_itree[idx];
1767 if (tree->lit_mode == LCK_PR)
1770 interval_iterate_reverse(tree->lit_root,
1771 filter_intent_cb, &arg);
1775 /* There were no PW locks beyond the size in the LVB; finished. */
1777 if (only_liblustre) {
1778 /* If we discovered a liblustre client with a PW lock,
1779 * however, the LVB may be out of date! The LVB is
1780 * updated only on glimpse (which we don't do for
1781 * liblustre clients) and cancel (which the client
1782 * obviously has not yet done). So if it has written
1783 * data but kept the lock, the LVB is stale and needs
1784 * to be updated from disk.
1786 * Of course, this will all disappear when we switch to
1787 * taking liblustre locks on the OST. */
1788 ldlm_res_lvbo_update(res, NULL, 0, 1);
1790 RETURN(ELDLM_LOCK_ABORTED);
1794 * This check is for lock taken in filter_prepare_destroy() that does
1795 * not have l_glimpse_ast set. So the logic is: if there is a lock
1796 * with no l_glimpse_ast set, this object is being destroyed already.
1798 * Hence, if you are grabbing DLM locks on the server, always set
1799 * non-NULL glimpse_ast (e.g., ldlm_request.c:ldlm_glimpse_ast()).
1801 if (l->l_glimpse_ast == NULL) {
1802 /* We are racing with unlink(); just return -ENOENT */
1803 rep->lock_policy_res1 = -ENOENT;
1807 LASSERTF(l->l_glimpse_ast != NULL, "l == %p", l);
1808 rc = l->l_glimpse_ast(l, NULL); /* this will update the LVB */
1809 /* Update the LVB from disk if the AST failed (this is a legal race) */
1811 * XXX nikita: situation when ldlm_server_glimpse_ast() failed before
1812 * sending ast is not handled. This can result in lost client writes.
1815 ldlm_res_lvbo_update(res, NULL, 0, 1);
1818 *reply_lvb = *res_lvb;
1824 RETURN(ELDLM_LOCK_ABORTED);
1828 * per-obd_device iobuf pool.
1830 * To avoid memory deadlocks in low-memory setups, amount of dynamic
1831 * allocations in write-path has to be minimized (see bug 5137).
1833 * Pages, niobuf_local's and niobuf_remote's are pre-allocated and attached to
1834 * OST threads (see ost_thread_{init,done}()).
1836 * "iobuf's" used by filter cannot be attached to OST thread, however, because
1837 * at the OST layer there are only (potentially) multiple obd_device of type
1838 * unknown at the time of OST thread creation.
1840 * Instead array of iobuf's is attached to struct filter_obd (->fo_iobuf_pool
1841 * field). This array has size OST_MAX_THREADS, so that each OST thread uses
1842 * it's very own iobuf.
1846 * filter_kiobuf_pool_init()
1848 * filter_kiobuf_pool_done()
1850 * filter_iobuf_get()
1852 * operate on this array. They are "generic" in a sense that they don't depend
1853 * on actual type of iobuf's (the latter depending on Linux kernel version).
1857 * destroy pool created by filter_iobuf_pool_init
1859 static void filter_iobuf_pool_done(struct filter_obd *filter)
1861 struct filter_iobuf **pool;
1866 pool = filter->fo_iobuf_pool;
1868 for (i = 0; i < filter->fo_iobuf_count; ++ i) {
1869 if (pool[i] != NULL)
1870 filter_free_iobuf(pool[i]);
1872 OBD_FREE(pool, filter->fo_iobuf_count * sizeof pool[0]);
1873 filter->fo_iobuf_pool = NULL;
1879 * pre-allocate pool of iobuf's to be used by filter_{prep,commit}rw_write().
1881 static int filter_iobuf_pool_init(struct filter_obd *filter)
1888 OBD_ALLOC_GFP(filter->fo_iobuf_pool, OSS_THREADS_MAX * sizeof(*pool),
1890 if (filter->fo_iobuf_pool == NULL)
1893 filter->fo_iobuf_count = OSS_THREADS_MAX;
1898 /* Return iobuf allocated for @thread_id. We don't know in advance how
1899 * many threads there will be so we allocate a large empty array and only
1900 * fill in those slots that are actually in use.
1901 * If we haven't allocated a pool entry for this thread before, do so now. */
1902 void *filter_iobuf_get(struct filter_obd *filter, struct obd_trans_info *oti)
1904 int thread_id = oti ? oti->oti_thread_id : -1;
1905 struct filter_iobuf *pool = NULL;
1906 struct filter_iobuf **pool_place = NULL;
1908 if (thread_id >= 0) {
1909 LASSERT(thread_id < filter->fo_iobuf_count);
1910 pool = *(pool_place = &filter->fo_iobuf_pool[thread_id]);
1913 if (unlikely(pool == NULL)) {
1914 pool = filter_alloc_iobuf(filter, OBD_BRW_WRITE,
1915 PTLRPC_MAX_BRW_PAGES);
1916 if (pool_place != NULL)
1923 /* mount the file system (secretly). lustre_cfg parameters are:
1926 * 3 = flags: failover=f, failout=n
1929 int filter_common_setup(struct obd_device *obd, struct lustre_cfg* lcfg,
1932 struct filter_obd *filter = &obd->u.filter;
1933 struct vfsmount *mnt;
1934 struct lustre_mount_info *lmi;
1935 struct obd_uuid uuid;
1943 if (lcfg->lcfg_bufcount < 3 ||
1944 LUSTRE_CFG_BUFLEN(lcfg, 1) < 1 ||
1945 LUSTRE_CFG_BUFLEN(lcfg, 2) < 1)
1948 lmi = server_get_mount(obd->obd_name);
1950 /* We already mounted in lustre_fill_super.
1951 lcfg bufs 1, 2, 4 (device, fstype, mount opts) are ignored.*/
1952 struct lustre_sb_info *lsi = s2lsi(lmi->lmi_sb);
1954 obd->obd_fsops = fsfilt_get_ops(MT_STR(lsi->lsi_ldd));
1956 /* old path - used by lctl */
1957 CERROR("Using old MDS mount method\n");
1958 mnt = ll_kern_mount(lustre_cfg_string(lcfg, 2),
1959 MS_NOATIME|MS_NODIRATIME,
1960 lustre_cfg_string(lcfg, 1), option);
1963 LCONSOLE_ERROR_MSG(0x135, "Can't mount disk %s (%d)\n",
1964 lustre_cfg_string(lcfg, 1), rc);
1968 obd->obd_fsops = fsfilt_get_ops(lustre_cfg_string(lcfg, 2));
1970 if (IS_ERR(obd->obd_fsops))
1971 GOTO(err_mntput, rc = PTR_ERR(obd->obd_fsops));
1973 rc = filter_iobuf_pool_init(filter);
1977 LASSERT(!lvfs_check_rdonly(lvfs_sbdev(mnt->mnt_sb)));
1979 /* failover is the default */
1980 obd->obd_replayable = 1;
1982 if (lcfg->lcfg_bufcount > 3 && LUSTRE_CFG_BUFLEN(lcfg, 3) > 0) {
1983 str = lustre_cfg_string(lcfg, 3);
1984 if (strchr(str, 'n')) {
1985 CWARN("%s: recovery disabled\n", obd->obd_name);
1986 obd->obd_replayable = 0;
1990 filter->fo_vfsmnt = mnt;
1991 obd->u.obt.obt_sb = mnt->mnt_sb;
1992 filter->fo_fstype = mnt->mnt_sb->s_type->name;
1993 CDEBUG(D_SUPER, "%s: mnt = %p\n", filter->fo_fstype, mnt);
1995 fsfilt_setup(obd, obd->u.obt.obt_sb);
1997 OBD_SET_CTXT_MAGIC(&obd->obd_lvfs_ctxt);
1998 obd->obd_lvfs_ctxt.pwdmnt = mnt;
1999 obd->obd_lvfs_ctxt.pwd = mnt->mnt_root;
2000 obd->obd_lvfs_ctxt.fs = get_ds();
2001 obd->obd_lvfs_ctxt.cb_ops = filter_lvfs_ops;
2003 init_mutex(&filter->fo_init_lock);
2004 filter->fo_committed_group = 0;
2006 rc = filter_prep(obd);
2010 filter->fo_destroys_in_progress = 0;
2011 for (i = 0; i < 32; i++)
2012 sema_init(&filter->fo_create_locks[i], 1);
2014 spin_lock_init(&filter->fo_translock);
2015 spin_lock_init(&filter->fo_objidlock);
2016 CFS_INIT_LIST_HEAD(&filter->fo_export_list);
2017 sema_init(&filter->fo_alloc_lock, 1);
2018 init_brw_stats(&filter->fo_filter_stats);
2019 filter->fo_readcache_max_filesize = FILTER_MAX_CACHE_SIZE;
2020 filter->fo_fmd_max_num = FILTER_FMD_MAX_NUM_DEFAULT;
2021 filter->fo_fmd_max_age = FILTER_FMD_MAX_AGE_DEFAULT;
2023 CFS_INIT_LIST_HEAD(&filter->fo_llog_list);
2024 spin_lock_init(&filter->fo_llog_list_lock);
2026 filter->fo_sptlrpc_lock = RW_LOCK_UNLOCKED;
2027 sptlrpc_rule_set_init(&filter->fo_sptlrpc_rset);
2029 filter->fo_fl_oss_capa = 0;
2030 CFS_INIT_LIST_HEAD(&filter->fo_capa_keys);
2031 filter->fo_capa_hash = init_capa_hash();
2032 if (filter->fo_capa_hash == NULL)
2033 GOTO(err_ops, rc = -ENOMEM);
2035 sprintf(ns_name, "filter-%s", obd->obd_uuid.uuid);
2036 obd->obd_namespace = ldlm_namespace_new(obd, ns_name, LDLM_NAMESPACE_SERVER,
2037 LDLM_NAMESPACE_GREEDY);
2038 if (obd->obd_namespace == NULL)
2039 GOTO(err_post, rc = -ENOMEM);
2040 obd->obd_namespace->ns_lvbp = obd;
2041 obd->obd_namespace->ns_lvbo = &filter_lvbo;
2042 ldlm_register_intent(obd->obd_namespace, filter_intent_policy);
2044 ptlrpc_init_client(LDLM_CB_REQUEST_PORTAL, LDLM_CB_REPLY_PORTAL,
2045 "filter_ldlm_cb_client", &obd->obd_ldlm_client);
2047 rc = llog_cat_initialize(obd, &obd->obd_olg, 1, NULL);
2049 CERROR("failed to setup llogging subsystems\n");
2053 rc = lquota_setup(filter_quota_interface_ref, obd);
2057 q = bdev_get_queue(mnt->mnt_sb->s_bdev);
2058 if (q->max_sectors < q->max_hw_sectors &&
2059 q->max_sectors < PTLRPC_MAX_BRW_SIZE >> 9)
2060 LCONSOLE_INFO("%s: underlying device %s should be tuned "
2061 "for larger I/O requests: max_sectors = %u "
2062 "could be up to max_hw_sectors=%u\n",
2063 obd->obd_name, mnt->mnt_sb->s_id,
2064 q->max_sectors, q->max_hw_sectors);
2066 uuid_ptr = fsfilt_uuid(obd, obd->u.obt.obt_sb);
2067 if (uuid_ptr != NULL) {
2068 class_uuid_unparse(uuid_ptr, &uuid);
2074 label = fsfilt_get_label(obd, obd->u.obt.obt_sb);
2076 if (obd->obd_recovering) {
2077 LCONSOLE_WARN("OST %s now serving %s (%s%s%s), but will be in "
2078 "recovery for at least %d:%.02d, or until %d "
2079 "client%s reconnect. During this time new clients"
2080 " will not be allowed to connect. "
2081 "Recovery progress can be monitored by watching "
2082 "/proc/fs/lustre/obdfilter/%s/recovery_status.\n",
2083 obd->obd_name, lustre_cfg_string(lcfg, 1),
2084 label ?: "", label ? "/" : "", str,
2085 obd->obd_recovery_timeout / 60,
2086 obd->obd_recovery_timeout % 60,
2087 obd->obd_max_recoverable_clients,
2088 (obd->obd_max_recoverable_clients == 1) ? "":"s",
2091 LCONSOLE_INFO("OST %s now serving %s (%s%s%s) with recovery "
2092 "%s\n", obd->obd_name, lustre_cfg_string(lcfg, 1),
2093 label ?: "", label ? "/" : "", str,
2094 obd->obd_replayable ? "enabled" : "disabled");
2102 fsfilt_put_ops(obd->obd_fsops);
2103 filter_iobuf_pool_done(filter);
2105 server_put_mount(obd->obd_name, mnt);
2106 obd->u.obt.obt_sb = 0;
2110 static int filter_setup(struct obd_device *obd, struct lustre_cfg* lcfg)
2112 struct lprocfs_static_vars lvars;
2117 CLASSERT(offsetof(struct obd_device, u.obt) ==
2118 offsetof(struct obd_device, u.filter.fo_obt));
2120 if (!LUSTRE_CFG_BUFLEN(lcfg, 1) || !LUSTRE_CFG_BUFLEN(lcfg, 2))
2123 /* 2.6.9 selinux wants a full option page for do_kern_mount (bug6471) */
2124 OBD_PAGE_ALLOC(page, CFS_ALLOC_STD);
2127 addr = (unsigned long)cfs_page_address(page);
2128 clear_page((void *)addr);
2130 /* lprocfs must be setup before the filter so state can be safely added
2131 * to /proc incrementally as the filter is setup */
2132 lprocfs_filter_init_vars(&lvars);
2133 if (lprocfs_obd_setup(obd, lvars.obd_vars) == 0 &&
2134 lprocfs_alloc_obd_stats(obd, LPROC_FILTER_LAST) == 0) {
2135 /* Init obdfilter private stats here */
2136 lprocfs_counter_init(obd->obd_stats, LPROC_FILTER_READ_BYTES,
2137 LPROCFS_CNTR_AVGMINMAX,
2138 "read_bytes", "bytes");
2139 lprocfs_counter_init(obd->obd_stats, LPROC_FILTER_WRITE_BYTES,
2140 LPROCFS_CNTR_AVGMINMAX,
2141 "write_bytes", "bytes");
2143 lproc_filter_attach_seqstat(obd);
2144 obd->obd_proc_exports_entry = lprocfs_register("exports",
2145 obd->obd_proc_entry,
2147 if (IS_ERR(obd->obd_proc_exports_entry)) {
2148 rc = PTR_ERR(obd->obd_proc_exports_entry);
2149 CERROR("error %d setting up lprocfs for %s\n",
2151 obd->obd_proc_exports_entry = NULL;
2154 if (obd->obd_proc_exports_entry)
2155 lprocfs_add_simple(obd->obd_proc_exports_entry, "clear",
2156 lprocfs_nid_stats_clear_read,
2157 lprocfs_nid_stats_clear_write, obd);
2159 memcpy((void *)addr, lustre_cfg_buf(lcfg, 4),
2160 LUSTRE_CFG_BUFLEN(lcfg, 4));
2161 rc = filter_common_setup(obd, lcfg, (void *)addr);
2162 OBD_PAGE_FREE(page);
2165 lprocfs_remove_proc_entry("clear", obd->obd_proc_exports_entry);
2166 lprocfs_free_per_client_stats(obd);
2167 lprocfs_free_obd_stats(obd);
2168 lprocfs_obd_cleanup(obd);
2174 static int filter_group_llog_finish(struct obd_llog_group *olg)
2176 struct llog_ctxt *ctxt;
2177 int rc = 0, rc2 = 0;
2180 ctxt = llog_group_get_ctxt(olg, LLOG_MDS_OST_REPL_CTXT);
2182 rc = llog_cleanup(ctxt);
2184 ctxt = llog_group_get_ctxt(olg, LLOG_SIZE_ORIG_CTXT);
2186 rc2 = llog_cleanup(ctxt);
2193 static struct llog_operations filter_mds_ost_repl_logops /* initialized below*/;
2194 static struct llog_operations filter_size_orig_logops = {
2195 lop_setup: llog_obd_origin_setup,
2196 lop_cleanup: llog_obd_origin_cleanup,
2197 lop_add: llog_obd_origin_add
2201 * Init obd_llog_group of the filter
2203 static int filter_olg_init(struct obd_device *obd, struct obd_llog_group *olg,
2204 struct obd_device *tgt)
2208 rc = llog_setup(obd, olg, LLOG_MDS_OST_REPL_CTXT, tgt, 0, NULL,
2209 &filter_mds_ost_repl_logops);
2213 rc = llog_setup(obd, olg, LLOG_SIZE_ORIG_CTXT, tgt, 0, NULL,
2214 &filter_size_orig_logops);
2219 filter_group_llog_finish(olg);
2224 * Init the default olg, which is embeded in the obd_device, for filter.
2227 filter_default_olg_init(struct obd_device *obd, struct obd_llog_group *olg,
2228 struct obd_device *tgt)
2230 struct filter_obd *filter = &obd->u.filter;
2231 struct llog_ctxt *ctxt;
2234 LASSERT(filter->fo_lcm == NULL);
2235 OBD_ALLOC(filter->fo_lcm, sizeof(struct llog_commit_master));
2236 if (!filter->fo_lcm)
2239 rc = llog_init_commit_master((struct llog_commit_master *)
2244 filter_mds_ost_repl_logops = llog_client_ops;
2245 filter_mds_ost_repl_logops.lop_cancel = llog_obd_repl_cancel;
2246 filter_mds_ost_repl_logops.lop_connect = llog_repl_connect;
2247 filter_mds_ost_repl_logops.lop_sync = llog_obd_repl_sync;
2249 rc = filter_olg_init(obd, olg, tgt);
2253 ctxt = llog_group_get_ctxt(olg, LLOG_MDS_OST_REPL_CTXT);
2254 LASSERT(ctxt != NULL);
2255 ctxt->llog_proc_cb = filter_recov_log_mds_ost_cb;
2256 ctxt->loc_lcm = obd->u.filter.fo_lcm;
2257 /* Only start log commit thread for default llog ctxt*/
2258 rc = llog_start_commit_thread(ctxt->loc_lcm);
2259 llog_ctxt_put(ctxt);
2264 llog_cleanup_commit_master(filter->fo_lcm, 0);
2265 OBD_FREE(filter->fo_lcm, sizeof(struct llog_commit_master));
2266 filter->fo_lcm = NULL;
2271 static int filter_llog_init(struct obd_device *obd, struct obd_llog_group *olg,
2272 struct obd_device *tgt, int count,
2273 struct llog_catid *catid,
2274 struct obd_uuid *uuid)
2276 struct filter_obd *filter = &obd->u.filter;
2277 struct llog_ctxt *ctxt;
2281 LASSERT(olg != NULL);
2282 if (olg == &obd->obd_olg)
2283 return filter_default_olg_init(obd, olg, tgt);
2285 /* For other group llog, which will be initialized in
2286 * llog_connect(after default_olg_init, so fo_lcm must
2287 * already be initialized */
2288 LASSERT(filter->fo_lcm != NULL);
2289 rc = filter_olg_init(obd, olg, tgt);
2292 ctxt = llog_group_get_ctxt(olg, LLOG_MDS_OST_REPL_CTXT);
2293 LASSERT(ctxt != NULL);
2294 ctxt->llog_proc_cb = filter_recov_log_mds_ost_cb;
2295 ctxt->loc_lcm = obd->u.filter.fo_lcm;
2296 llog_ctxt_put(ctxt);
2301 static int filter_llog_finish(struct obd_device *obd, int count)
2306 if (obd->u.filter.fo_lcm) {
2307 llog_cleanup_commit_master((struct llog_commit_master *)
2308 obd->u.filter.fo_lcm, 1);
2309 OBD_FREE(obd->u.filter.fo_lcm,
2310 sizeof(struct llog_commit_master));
2311 obd->u.filter.fo_lcm = NULL;
2313 /* finish obd llog group */
2314 rc = filter_group_llog_finish(&obd->obd_olg);
2320 * Find the group llog according to group index in the llog group list.
2322 static struct obd_llog_group *
2323 filter_find_olg_internal(struct filter_obd *filter, int group)
2325 struct obd_llog_group *olg;
2327 LASSERT_SPIN_LOCKED(&filter->fo_llog_list_lock);
2328 list_for_each_entry(olg, &filter->fo_llog_list, olg_list) {
2329 if (olg->olg_group == group)
2336 * Find the group llog according to group index on the filter
2338 struct obd_llog_group *filter_find_olg(struct obd_device *obd, int group)
2340 struct obd_llog_group *olg = NULL;
2341 struct filter_obd *filter;
2343 filter = &obd->u.filter;
2345 if (group == OBD_LLOG_GROUP)
2346 RETURN(&obd->obd_olg);
2348 spin_lock(&filter->fo_llog_list_lock);
2349 olg = filter_find_olg_internal(filter, group);
2350 spin_unlock(&filter->fo_llog_list_lock);
2355 * Find the llog_group of the filter according to the group. If it can not
2356 * find, create the llog_group, which only happens when mds is being synced
2359 struct obd_llog_group *filter_find_create_olg(struct obd_device *obd, int group)
2361 struct obd_llog_group *olg = NULL;
2362 struct filter_obd *filter;
2365 filter = &obd->u.filter;
2367 if (group == OBD_LLOG_GROUP)
2368 RETURN(&obd->obd_olg);
2370 spin_lock(&filter->fo_llog_list_lock);
2371 olg = filter_find_olg_internal(filter, group);
2373 if (olg->olg_initializing) {
2374 GOTO(out_unlock, olg = ERR_PTR(-EBUSY));
2376 GOTO(out_unlock, olg);
2381 GOTO(out_unlock, olg = ERR_PTR(-ENOMEM));
2383 llog_group_init(olg, group);
2384 list_add(&olg->olg_list, &filter->fo_llog_list);
2385 olg->olg_initializing = 1;
2386 spin_unlock(&filter->fo_llog_list_lock);
2388 rc = llog_cat_initialize(obd, olg, 1, NULL);
2390 spin_lock(&filter->fo_llog_list_lock);
2391 list_del(&olg->olg_list);
2392 spin_unlock(&filter->fo_llog_list_lock);
2394 GOTO(out, olg = ERR_PTR(-ENOMEM));
2396 spin_lock(&filter->fo_llog_list_lock);
2397 olg->olg_initializing = 0;
2398 spin_unlock(&filter->fo_llog_list_lock);
2399 CDEBUG(D_OTHER, "%s: new llog group %u (0x%p)\n",
2400 obd->obd_name, group, olg);
2405 spin_unlock(&filter->fo_llog_list_lock);
2409 static int filter_llog_connect(struct obd_export *exp,
2410 struct llogd_conn_body *body)
2412 struct obd_device *obd = exp->exp_obd;
2413 struct llog_ctxt *ctxt;
2414 struct obd_llog_group *olg;
2418 CDEBUG(D_OTHER, "handle connect for %s: %u/%u/%u\n", obd->obd_name,
2419 (unsigned) body->lgdc_logid.lgl_ogr,
2420 (unsigned) body->lgdc_logid.lgl_oid,
2421 (unsigned) body->lgdc_logid.lgl_ogen);
2423 olg = filter_find_olg(obd, body->lgdc_logid.lgl_ogr);
2425 CERROR(" %s: can not find olg of group %d\n",
2426 obd->obd_name, (int)body->lgdc_logid.lgl_ogr);
2429 llog_group_set_export(olg, exp);
2431 ctxt = llog_group_get_ctxt(olg, body->lgdc_ctxt_idx);
2432 LASSERTF(ctxt != NULL, "ctxt is not null, ctxt idx %d \n",
2433 body->lgdc_ctxt_idx);
2434 rc = llog_connect(ctxt, 1, &body->lgdc_logid,
2435 &body->lgdc_gen, NULL);
2436 llog_ctxt_put(ctxt);
2438 CERROR("failed to connect rc %d idx %d\n", rc,
2439 body->lgdc_ctxt_idx);
2444 static int filter_llog_preclean (struct obd_device *obd)
2446 struct obd_llog_group *olg, *tmp;
2447 struct filter_obd *filter;
2448 struct list_head remove_list;
2452 rc = obd_llog_finish(obd, 0);
2454 CERROR("failed to cleanup llogging subsystem\n");
2456 filter = &obd->u.filter;
2457 CFS_INIT_LIST_HEAD(&remove_list);
2459 spin_lock(&filter->fo_llog_list_lock);
2460 while (!list_empty(&filter->fo_llog_list)) {
2461 olg = list_entry(filter->fo_llog_list.next,
2462 struct obd_llog_group, olg_list);
2463 list_del(&olg->olg_list);
2464 list_add(&olg->olg_list, &remove_list);
2466 spin_unlock(&filter->fo_llog_list_lock);
2468 list_for_each_entry_safe(olg, tmp, &remove_list, olg_list) {
2469 list_del_init(&olg->olg_list);
2470 rc = filter_group_llog_finish(olg);
2472 CERROR("failed to cleanup llogging subsystem for %u\n",
2480 static int filter_precleanup(struct obd_device *obd,
2481 enum obd_cleanup_stage stage)
2487 case OBD_CLEANUP_EARLY:
2489 case OBD_CLEANUP_EXPORTS:
2490 target_cleanup_recovery(obd);
2491 rc = filter_llog_preclean(obd);
2497 static int filter_cleanup(struct obd_device *obd)
2499 struct filter_obd *filter = &obd->u.filter;
2503 LCONSOLE_WARN("%s: shutting down for failover; client state "
2504 "will be preserved.\n", obd->obd_name);
2506 if (!list_empty(&obd->obd_exports)) {
2507 CERROR("%s: still has clients!\n", obd->obd_name);
2508 class_disconnect_exports(obd);
2509 if (!list_empty(&obd->obd_exports)) {
2510 CERROR("still has exports after forced cleanup?\n");
2515 lprocfs_remove_proc_entry("clear", obd->obd_proc_exports_entry);
2516 lprocfs_free_per_client_stats(obd);
2517 lprocfs_free_obd_stats(obd);
2518 lprocfs_obd_cleanup(obd);
2519 lquota_cleanup(filter_quota_interface_ref, obd);
2521 /* Stop recovery before namespace cleanup. */
2522 target_stop_recovery_thread(obd);
2523 target_cleanup_recovery(obd);
2525 ldlm_namespace_free(obd->obd_namespace, NULL, obd->obd_force);
2526 obd->obd_namespace = NULL;
2528 sptlrpc_rule_set_free(&filter->fo_sptlrpc_rset);
2530 if (obd->u.obt.obt_sb == NULL)
2535 LL_DQUOT_OFF(obd->u.obt.obt_sb);
2536 shrink_dcache_sb(obd->u.obt.obt_sb);
2538 server_put_mount(obd->obd_name, filter->fo_vfsmnt);
2539 obd->u.obt.obt_sb = NULL;
2541 fsfilt_put_ops(obd->obd_fsops);
2543 filter_iobuf_pool_done(filter);
2545 LCONSOLE_INFO("OST %s has stopped.\n", obd->obd_name);
2550 static int filter_connect_internal(struct obd_export *exp,
2551 struct obd_connect_data *data)
2553 struct filter_export_data *fed = &exp->exp_filter_data;
2558 CDEBUG(D_RPCTRACE, "%s: cli %s/%p ocd_connect_flags: "LPX64
2559 " ocd_version: %x ocd_grant: %d ocd_index: %u\n",
2560 exp->exp_obd->obd_name, exp->exp_client_uuid.uuid, exp,
2561 data->ocd_connect_flags, data->ocd_version,
2562 data->ocd_grant, data->ocd_index);
2564 if (fed->fed_group != 0 && fed->fed_group != data->ocd_group) {
2565 CWARN("!!! This export (nid %s) used object group %d "
2566 "earlier; now it's trying to use group %d! This could "
2567 "be a bug in the MDS. Please report to "
2568 "http://bugzilla.lustre.org/\n",
2569 obd_export_nid2str(exp), fed->fed_group,data->ocd_group);
2572 fed->fed_group = data->ocd_group;
2574 data->ocd_connect_flags &= OST_CONNECT_SUPPORTED;
2575 exp->exp_connect_flags = data->ocd_connect_flags;
2576 data->ocd_version = LUSTRE_VERSION_CODE;
2578 if (exp->exp_connect_flags & OBD_CONNECT_GRANT) {
2579 obd_size left, want;
2581 spin_lock(&exp->exp_obd->obd_osfs_lock);
2582 left = filter_grant_space_left(exp);
2583 want = data->ocd_grant;
2584 filter_grant(exp, fed->fed_grant, want, left);
2585 data->ocd_grant = fed->fed_grant;
2586 spin_unlock(&exp->exp_obd->obd_osfs_lock);
2588 CDEBUG(D_CACHE, "%s: cli %s/%p ocd_grant: %d want: "
2589 LPU64" left: "LPU64"\n", exp->exp_obd->obd_name,
2590 exp->exp_client_uuid.uuid, exp,
2591 data->ocd_grant, want, left);
2594 if (data->ocd_connect_flags & OBD_CONNECT_INDEX) {
2595 struct filter_obd *filter = &exp->exp_obd->u.filter;
2596 struct lr_server_data *lsd = filter->fo_fsd;
2597 int index = le32_to_cpu(lsd->lsd_ost_index);
2599 if (!(lsd->lsd_feature_compat &
2600 cpu_to_le32(OBD_COMPAT_OST))) {
2601 /* this will only happen on the first connect */
2602 lsd->lsd_ost_index = cpu_to_le32(data->ocd_index);
2603 lsd->lsd_feature_compat |= cpu_to_le32(OBD_COMPAT_OST);
2604 filter_update_server_data(exp->exp_obd,
2605 filter->fo_rcvd_filp, lsd, 1);
2606 } else if (index != data->ocd_index) {
2607 LCONSOLE_ERROR_MSG(0x136, "Connection from %s to index"
2608 " %u doesn't match actual OST index"
2609 " %u in last_rcvd file, bad "
2611 obd_export_nid2str(exp), index,
2617 if (OBD_FAIL_CHECK(OBD_FAIL_OST_BRW_SIZE)) {
2618 data->ocd_brw_size = 65536;
2619 } else if (data->ocd_connect_flags & OBD_CONNECT_BRW_SIZE) {
2620 data->ocd_brw_size = min(data->ocd_brw_size,
2621 (__u32)(PTLRPC_MAX_BRW_PAGES << CFS_PAGE_SHIFT));
2622 LASSERT(data->ocd_brw_size);
2625 if (data->ocd_connect_flags & OBD_CONNECT_CKSUM) {
2626 __u32 cksum_types = data->ocd_cksum_types;
2628 /* The client set in ocd_cksum_types the checksum types it
2629 * supports. We have to mask off the algorithms that we don't
2631 if (cksum_types & OBD_CKSUM_ALL)
2632 data->ocd_cksum_types &= OBD_CKSUM_ALL;
2634 data->ocd_cksum_types = OBD_CKSUM_CRC32;
2636 CDEBUG(D_RPCTRACE, "%s: cli %s supports cksum type %x, return "
2637 "%x\n", exp->exp_obd->obd_name,
2638 obd_export_nid2str(exp), cksum_types,
2639 data->ocd_cksum_types);
2641 /* This client does not support OBD_CONNECT_CKSUM
2642 * fall back to CRC32 */
2643 CDEBUG(D_RPCTRACE, "%s: cli %s does not support "
2644 "OBD_CONNECT_CKSUM, CRC32 will be used\n",
2645 exp->exp_obd->obd_name,
2646 obd_export_nid2str(exp));
2649 /* FIXME: Do the same with the MDS UUID and fsd_peeruuid.
2650 * FIXME: We don't strictly need the COMPAT flag for that,
2651 * FIXME: as fsd_peeruuid[0] will tell us if that is set.
2652 * FIXME: We needed it for the index, as index 0 is valid. */
2657 static int filter_reconnect(const struct lu_env *env,
2658 struct obd_export *exp, struct obd_device *obd,
2659 struct obd_uuid *cluuid,
2660 struct obd_connect_data *data)
2665 if (exp == NULL || obd == NULL || cluuid == NULL)
2668 rc = filter_connect_internal(exp, data);
2673 /* nearly identical to mds_connect */
2674 static int filter_connect(const struct lu_env *env,
2675 struct lustre_handle *conn, struct obd_device *obd,
2676 struct obd_uuid *cluuid,
2677 struct obd_connect_data *data, void *localdata)
2679 struct lvfs_run_ctxt saved;
2680 struct obd_export *exp;
2681 struct filter_export_data *fed;
2682 struct lsd_client_data *lcd = NULL;
2687 if (conn == NULL || obd == NULL || cluuid == NULL)
2690 rc = class_connect(conn, obd, cluuid);
2693 exp = class_conn2export(conn);
2694 LASSERT(exp != NULL);
2696 fed = &exp->exp_filter_data;
2698 rc = filter_connect_internal(exp, data);
2702 filter_export_stats_init(obd, exp, localdata);
2703 if (obd->obd_replayable) {
2704 OBD_ALLOC(lcd, sizeof(*lcd));
2706 CERROR("filter: out of memory for client data\n");
2707 GOTO(cleanup, rc = -ENOMEM);
2710 memcpy(lcd->lcd_uuid, cluuid, sizeof(lcd->lcd_uuid));
2712 rc = filter_client_add(obd, exp, -1);
2717 group = data->ocd_group;
2721 CWARN("%s: Received MDS connection ("LPX64"); group %d\n",
2722 obd->obd_name, exp->exp_handle.h_cookie, group);
2724 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
2725 rc = filter_read_groups(obd, group, 1);
2726 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
2728 CERROR("can't read group %u\n", group);
2738 fed->fed_lcd = NULL;
2740 class_disconnect(exp);
2742 class_export_put(exp);
2748 /* Do extra sanity checks for grant accounting. We do this at connect,
2749 * disconnect, and statfs RPC time, so it shouldn't be too bad. We can
2750 * always get rid of it or turn it off when we know accounting is good. */
2751 static void filter_grant_sanity_check(struct obd_device *obd, const char *func)
2753 struct filter_export_data *fed;
2754 struct obd_export *exp;
2755 obd_size maxsize = obd->obd_osfs.os_blocks * obd->obd_osfs.os_bsize;
2756 obd_size tot_dirty = 0, tot_pending = 0, tot_granted = 0;
2757 obd_size fo_tot_dirty, fo_tot_pending, fo_tot_granted;
2759 if (list_empty(&obd->obd_exports))
2762 /* We don't want to do this for large machines that do lots of
2763 mounts or unmounts. It burns... */
2764 if (obd->obd_num_exports > 100)
2767 spin_lock(&obd->obd_osfs_lock);
2768 spin_lock(&obd->obd_dev_lock);
2769 list_for_each_entry(exp, &obd->obd_exports, exp_obd_chain) {
2771 fed = &exp->exp_filter_data;
2772 if (fed->fed_grant < 0 || fed->fed_pending < 0 ||
2775 if (maxsize > 0) { /* we may not have done a statfs yet */
2776 LASSERTF(fed->fed_grant + fed->fed_pending <= maxsize,
2777 "%s: cli %s/%p %ld+%ld > "LPU64"\n", func,
2778 exp->exp_client_uuid.uuid, exp,
2779 fed->fed_grant, fed->fed_pending, maxsize);
2780 LASSERTF(fed->fed_dirty <= maxsize,
2781 "%s: cli %s/%p %ld > "LPU64"\n", func,
2782 exp->exp_client_uuid.uuid, exp,
2783 fed->fed_dirty, maxsize);
2786 CERROR("%s: cli %s/%p dirty %ld pend %ld grant %ld\n",
2787 obd->obd_name, exp->exp_client_uuid.uuid, exp,
2788 fed->fed_dirty, fed->fed_pending,fed->fed_grant);
2790 CDEBUG(D_CACHE, "%s: cli %s/%p dirty %ld pend %ld grant %ld\n",
2791 obd->obd_name, exp->exp_client_uuid.uuid, exp,
2792 fed->fed_dirty, fed->fed_pending,fed->fed_grant);
2793 tot_granted += fed->fed_grant + fed->fed_pending;
2794 tot_pending += fed->fed_pending;
2795 tot_dirty += fed->fed_dirty;
2797 fo_tot_granted = obd->u.filter.fo_tot_granted;
2798 fo_tot_pending = obd->u.filter.fo_tot_pending;
2799 fo_tot_dirty = obd->u.filter.fo_tot_dirty;
2800 spin_unlock(&obd->obd_dev_lock);
2801 spin_unlock(&obd->obd_osfs_lock);
2803 /* Do these assertions outside the spinlocks so we don't kill system */
2804 if (tot_granted != fo_tot_granted)
2805 CERROR("%s: tot_granted "LPU64" != fo_tot_granted "LPU64"\n",
2806 func, tot_granted, fo_tot_granted);
2807 if (tot_pending != fo_tot_pending)
2808 CERROR("%s: tot_pending "LPU64" != fo_tot_pending "LPU64"\n",
2809 func, tot_pending, fo_tot_pending);
2810 if (tot_dirty != fo_tot_dirty)
2811 CERROR("%s: tot_dirty "LPU64" != fo_tot_dirty "LPU64"\n",
2812 func, tot_dirty, fo_tot_dirty);
2813 if (tot_pending > tot_granted)
2814 CERROR("%s: tot_pending "LPU64" > tot_granted "LPU64"\n",
2815 func, tot_pending, tot_granted);
2816 if (tot_granted > maxsize)
2817 CERROR("%s: tot_granted "LPU64" > maxsize "LPU64"\n",
2818 func, tot_granted, maxsize);
2819 if (tot_dirty > maxsize)
2820 CERROR("%s: tot_dirty "LPU64" > maxsize "LPU64"\n",
2821 func, tot_dirty, maxsize);
2824 /* Remove this client from the grant accounting totals. We also remove
2825 * the export from the obd device under the osfs and dev locks to ensure
2826 * that the filter_grant_sanity_check() calculations are always valid.
2827 * The client should do something similar when it invalidates its import. */
2828 static void filter_grant_discard(struct obd_export *exp)
2830 struct obd_device *obd = exp->exp_obd;
2831 struct filter_obd *filter = &obd->u.filter;
2832 struct filter_export_data *fed = &exp->exp_filter_data;
2834 spin_lock(&obd->obd_osfs_lock);
2835 spin_lock(&obd->obd_dev_lock);
2836 list_del_init(&exp->exp_obd_chain);
2837 spin_unlock(&obd->obd_dev_lock);
2839 LASSERTF(filter->fo_tot_granted >= fed->fed_grant,
2840 "%s: tot_granted "LPU64" cli %s/%p fed_grant %ld\n",
2841 obd->obd_name, filter->fo_tot_granted,
2842 exp->exp_client_uuid.uuid, exp, fed->fed_grant);
2843 filter->fo_tot_granted -= fed->fed_grant;
2844 LASSERTF(filter->fo_tot_pending >= fed->fed_pending,
2845 "%s: tot_pending "LPU64" cli %s/%p fed_pending %ld\n",
2846 obd->obd_name, filter->fo_tot_pending,
2847 exp->exp_client_uuid.uuid, exp, fed->fed_pending);
2848 /* fo_tot_pending is handled in filter_grant_commit as bulk finishes */
2849 LASSERTF(filter->fo_tot_dirty >= fed->fed_dirty,
2850 "%s: tot_dirty "LPU64" cli %s/%p fed_dirty %ld\n",
2851 obd->obd_name, filter->fo_tot_dirty,
2852 exp->exp_client_uuid.uuid, exp, fed->fed_dirty);
2853 filter->fo_tot_dirty -= fed->fed_dirty;
2857 spin_unlock(&obd->obd_osfs_lock);
2860 static int filter_destroy_export(struct obd_export *exp)
2864 if (exp->exp_filter_data.fed_pending)
2865 CERROR("%s: cli %s/%p has %lu pending on destroyed export\n",
2866 exp->exp_obd->obd_name, exp->exp_client_uuid.uuid,
2867 exp, exp->exp_filter_data.fed_pending);
2869 /* Not ported yet the b1_6 quota functionality
2870 * lquota_clearinfo(filter_quota_interface_ref, exp, exp->exp_obd);
2873 target_destroy_export(exp);
2875 if (obd_uuid_equals(&exp->exp_client_uuid, &exp->exp_obd->obd_uuid))
2878 lprocfs_exp_cleanup(exp);
2880 if (exp->exp_obd->obd_replayable)
2881 filter_client_free(exp);
2883 fsfilt_sync(exp->exp_obd, exp->exp_obd->u.obt.obt_sb);
2885 filter_grant_discard(exp);
2886 filter_fmd_cleanup(exp);
2888 if (!(exp->exp_flags & OBD_OPT_FORCE))
2889 filter_grant_sanity_check(exp->exp_obd, __FUNCTION__);
2894 static void filter_sync_llogs(struct obd_device *obd, struct obd_export *dexp)
2896 struct obd_llog_group *olg_min, *olg;
2897 struct filter_obd *filter;
2898 int worked = 0, group;
2899 struct llog_ctxt *ctxt;
2902 filter = &obd->u.filter;
2904 /* we can't sync log holding spinlock. also, we do not want to get
2905 * into livelock. so we do following: loop over MDS's exports in
2906 * group order and skip already synced llogs -bzzz */
2908 /* look for group with min. number, but > worked */
2911 spin_lock(&filter->fo_llog_list_lock);
2912 list_for_each_entry(olg, &filter->fo_llog_list, olg_list) {
2913 if (olg->olg_group <= worked) {
2914 /* this group is already synced */
2917 if (group < olg->olg_group) {
2918 /* we have group with smaller number to sync */
2921 /* store current minimal group */
2923 group = olg->olg_group;
2925 spin_unlock(&filter->fo_llog_list_lock);
2927 if (olg_min == NULL)
2930 worked = olg_min->olg_group;
2931 if (olg_min->olg_exp &&
2932 (dexp == olg_min->olg_exp || dexp == NULL)) {
2934 ctxt = llog_group_get_ctxt(olg_min,
2935 LLOG_MDS_OST_REPL_CTXT);
2936 LASSERT(ctxt != NULL);
2937 err = llog_sync(ctxt, olg_min->olg_exp);
2938 llog_ctxt_put(ctxt);
2940 CERROR("error flushing logs to MDS: rc %d\n",
2943 } while (olg_min != NULL);
2946 /* also incredibly similar to mds_disconnect */
2947 static int filter_disconnect(struct obd_export *exp)
2949 struct obd_device *obd = exp->exp_obd;
2954 class_export_get(exp);
2956 if (!(exp->exp_flags & OBD_OPT_FORCE))
2957 filter_grant_sanity_check(obd, __FUNCTION__);
2958 filter_grant_discard(exp);
2960 /* Disconnect early so that clients can't keep using export */
2961 rc = class_disconnect(exp);
2962 if (exp->exp_obd->obd_namespace != NULL)
2963 ldlm_cancel_locks_for_export(exp);
2965 fsfilt_sync(obd, obd->u.obt.obt_sb);
2967 /* flush any remaining cancel messages out to the target */
2968 filter_sync_llogs(obd, exp);
2969 class_export_put(exp);
2973 /* reverse import is changed, sync all cancels */
2974 static void filter_revimp_update(struct obd_export *exp)
2979 class_export_get(exp);
2981 /* flush any remaining cancel messages out to the target */
2982 filter_sync_llogs(exp->exp_obd, exp);
2983 class_export_put(exp);
2987 static int filter_ping(struct obd_export *exp)
2989 filter_fmd_expire(exp);
2994 struct dentry *__filter_oa2dentry(struct obd_device *obd, struct obdo *oa,
2995 const char *what, int quiet)
2997 struct dentry *dchild = NULL;
3000 if (oa->o_valid & OBD_MD_FLGROUP)
3003 dchild = filter_fid2dentry(obd, NULL, group, oa->o_id);
3005 if (IS_ERR(dchild)) {
3006 CERROR("%s error looking up object: "LPU64":"LPU64"\n",
3007 what, group, oa->o_id);
3011 if (dchild->d_inode == NULL) {
3013 CERROR("%s: %s on non-existent object: "LPU64"\n",
3014 obd->obd_name, what, oa->o_id);
3016 RETURN(ERR_PTR(-ENOENT));
3022 static int filter_getattr(struct obd_export *exp, struct obd_info *oinfo)
3024 struct dentry *dentry = NULL;
3025 struct obd_device *obd;
3029 rc = filter_auth_capa(exp, NULL, oinfo_mdsno(oinfo),
3030 oinfo_capa(oinfo), CAPA_OPC_META_READ);
3034 obd = class_exp2obd(exp);
3036 CDEBUG(D_IOCTL, "invalid client export %p\n", exp);
3040 dentry = filter_oa2dentry(obd, oinfo->oi_oa);
3042 RETURN(PTR_ERR(dentry));
3044 /* Limit the valid bits in the return data to what we actually use */
3045 oinfo->oi_oa->o_valid = OBD_MD_FLID;
3046 obdo_from_inode(oinfo->oi_oa, dentry->d_inode, FILTER_VALID_FLAGS);
3052 /* this should be enabled/disabled in condition to enabled/disabled large
3053 * inodes (fast EAs) in backing store FS. */
3054 int filter_update_fidea(struct obd_export *exp, struct inode *inode,
3055 void *handle, struct obdo *oa)
3057 struct obd_device *obd = exp->exp_obd;
3061 if (oa->o_valid & OBD_MD_FLFID) {
3062 struct filter_fid ff;
3064 if (!(oa->o_valid & OBD_MD_FLGROUP))
3066 /* packing fid and converting it to LE for storing into EA.
3067 * Here ->o_stripe_idx should be filled by LOV and rest of
3068 * fields - by client. */
3069 ff.ff_fid.id = cpu_to_le64(oa->o_fid);
3070 ff.ff_fid.f_type = cpu_to_le32(oa->o_stripe_idx);
3071 ff.ff_fid.generation = cpu_to_le32(oa->o_generation);
3072 ff.ff_objid = cpu_to_le64(oa->o_id);
3073 ff.ff_group = cpu_to_le64(oa->o_gr);
3075 CDEBUG(D_INODE, "storing filter fid EA ("LPU64"/%u/%u"
3076 LPU64"/"LPU64")\n", oa->o_fid, oa->o_stripe_idx,
3077 oa->o_generation, oa->o_id, oa->o_gr);
3079 rc = fsfilt_set_md(obd, inode, handle, &ff, sizeof(ff), "fid");
3081 CERROR("store fid in object failed! rc: %d\n", rc);
3083 CDEBUG(D_HA, "OSS object without fid info!\n");
3089 /* this is called from filter_truncate() until we have filter_punch() */
3090 int filter_setattr_internal(struct obd_export *exp, struct dentry *dentry,
3091 struct obdo *oa, struct obd_trans_info *oti)
3093 unsigned int orig_ids[MAXQUOTAS] = {0, 0};
3094 struct llog_cookie *fcc = NULL;
3095 struct filter_obd *filter;
3096 int rc, err, locked = 0, sync = 0;
3097 unsigned int ia_valid;
3098 struct inode *inode;
3103 LASSERT(dentry != NULL);
3104 LASSERT(!IS_ERR(dentry));
3106 inode = dentry->d_inode;
3107 LASSERT(inode != NULL);
3109 filter = &exp->exp_obd->u.filter;
3110 iattr_from_obdo(&iattr, oa, oa->o_valid);
3111 ia_valid = iattr.ia_valid;
3113 if (oa->o_valid & OBD_MD_FLCOOKIE) {
3114 OBD_ALLOC(fcc, sizeof(*fcc));
3116 memcpy(fcc, obdo_logcookie(oa), sizeof(*fcc));
3119 if (ia_valid & ATTR_SIZE || ia_valid & (ATTR_UID | ATTR_GID)) {
3121 LOCK_INODE_MUTEX(inode);
3125 /* If the inode still has SUID+SGID bits set (see filter_precreate())
3126 * then we will accept the UID+GID sent by the client during write for
3127 * initializing the ownership of this inode. We only allow this to
3128 * happen once so clear these bits in setattr. In 2.6 kernels it is
3129 * possible to get ATTR_UID and ATTR_GID separately, so we only clear
3130 * the flags that are actually being set. */
3131 if (ia_valid & (ATTR_UID | ATTR_GID)) {
3132 CDEBUG(D_INODE, "update UID/GID to %lu/%lu\n",
3133 (unsigned long)oa->o_uid, (unsigned long)oa->o_gid);
3135 if ((inode->i_mode & S_ISUID) && (ia_valid & ATTR_UID)) {
3136 if (!(ia_valid & ATTR_MODE)) {
3137 iattr.ia_mode = inode->i_mode;
3138 iattr.ia_valid |= ATTR_MODE;
3140 iattr.ia_mode &= ~S_ISUID;
3142 if ((inode->i_mode & S_ISGID) && (ia_valid & ATTR_GID)) {
3143 if (!(iattr.ia_valid & ATTR_MODE)) {
3144 iattr.ia_mode = inode->i_mode;
3145 iattr.ia_valid |= ATTR_MODE;
3147 iattr.ia_mode &= ~S_ISGID;
3150 orig_ids[USRQUOTA] = inode->i_uid;
3151 orig_ids[GRPQUOTA] = inode->i_gid;
3152 handle = fsfilt_start_log(exp->exp_obd, inode,
3153 FSFILT_OP_SETATTR, oti, 1);
3155 GOTO(out_unlock, rc = PTR_ERR(handle));
3157 /* update inode EA only once when inode is suid bit marked. As
3158 * on 2.6.x UID and GID may be set separately, we check here
3159 * only one of them to avoid double setting. */
3160 if (inode->i_mode & S_ISUID)
3161 filter_update_fidea(exp, inode, handle, oa);
3163 handle = fsfilt_start(exp->exp_obd, inode,
3164 FSFILT_OP_SETATTR, oti);
3166 GOTO(out_unlock, rc = PTR_ERR(handle));
3168 if (oa->o_valid & OBD_MD_FLFLAGS) {
3169 rc = fsfilt_iocontrol(exp->exp_obd, inode, NULL,
3170 EXT3_IOC_SETFLAGS, (long)&oa->o_flags);
3172 rc = fsfilt_setattr(exp->exp_obd, dentry, handle, &iattr, 1);
3174 /* set cancel cookie callback function */
3175 sync = fsfilt_add_journal_cb(exp->exp_obd, 0, handle,
3176 filter_cancel_cookies_cb,
3180 if (OBD_FAIL_CHECK(OBD_FAIL_OST_SETATTR_CREDITS))
3181 fsfilt_extend(exp->exp_obd, inode, 0, handle);
3183 /* The truncate might have used up our transaction credits. Make
3184 * sure we have one left for the last_rcvd update. */
3185 err = fsfilt_extend(exp->exp_obd, inode, 1, handle);
3187 rc = filter_finish_transno(exp, oti, rc, sync);
3189 filter_cancel_cookies_cb(exp->exp_obd, 0, fcc, rc);
3193 err = fsfilt_commit(exp->exp_obd, inode, handle, 0);
3195 CERROR("error on commit, err = %d\n", err);
3203 /* Let's flush truncated page on disk immediately, then we can
3204 * avoid need to search for page aliases before directio writes
3205 * and this sort of stuff at expense of somewhat slower
3206 * truncates not on a page boundary. I believe this is the only
3207 * place in filter code that can lead to pages getting to
3208 * pagecache so far. */
3209 filter_clear_truncated_page(inode);
3210 UNLOCK_INODE_MUTEX(inode);
3217 UNLOCK_INODE_MUTEX(inode);
3220 OBD_FREE(fcc, sizeof(*fcc));
3222 /* trigger quota release */
3223 if (ia_valid & (ATTR_SIZE | ATTR_UID | ATTR_GID)) {
3224 unsigned int cur_ids[MAXQUOTAS] = {oa->o_uid, oa->o_gid};
3225 int rc2 = lquota_adjust(filter_quota_interface_ref,
3226 exp->exp_obd, cur_ids,
3227 orig_ids, rc, FSFILT_OP_SETATTR);
3228 CDEBUG(rc2 ? D_ERROR : D_QUOTA,
3229 "filter adjust qunit. (rc:%d)\n", rc2);
3234 /* this is called from filter_truncate() until we have filter_punch() */
3235 int filter_setattr(struct obd_export *exp, struct obd_info *oinfo,
3236 struct obd_trans_info *oti)
3238 struct ldlm_res_id res_id;
3239 struct filter_mod_data *fmd;
3240 struct lvfs_run_ctxt saved;
3241 struct filter_obd *filter;
3242 struct ldlm_resource *res;
3243 struct dentry *dentry;
3247 osc_build_res_name(oinfo->oi_oa->o_id, oinfo->oi_oa->o_gr, &res_id);
3248 rc = filter_auth_capa(exp, NULL, oinfo_mdsno(oinfo),
3249 oinfo_capa(oinfo), CAPA_OPC_META_WRITE);
3253 /* This would be very bad - accidentally truncating a file when
3254 * changing the time or similar - bug 12203. */
3255 if (oinfo->oi_oa->o_valid & OBD_MD_FLSIZE &&
3256 oinfo->oi_policy.l_extent.end != OBD_OBJECT_EOF) {
3257 static char mdsinum[48];
3259 if (oinfo->oi_oa->o_valid & OBD_MD_FLFID)
3260 snprintf(mdsinum, sizeof(mdsinum) - 1,
3261 " of inode "LPU64"/%u", oinfo->oi_oa->o_fid,
3262 oinfo->oi_oa->o_generation);
3266 CERROR("%s: setattr from %s trying to truncate objid "LPU64
3268 exp->exp_obd->obd_name, obd_export_nid2str(exp),
3269 oinfo->oi_oa->o_id, mdsinum);
3273 dentry = __filter_oa2dentry(exp->exp_obd, oinfo->oi_oa,
3276 RETURN(PTR_ERR(dentry));
3278 filter = &exp->exp_obd->u.filter;
3279 push_ctxt(&saved, &exp->exp_obd->obd_lvfs_ctxt, NULL);
3282 if (oinfo->oi_oa->o_valid &
3283 (OBD_MD_FLMTIME | OBD_MD_FLATIME | OBD_MD_FLCTIME)) {
3284 fmd = filter_fmd_get(exp,oinfo->oi_oa->o_id,oinfo->oi_oa->o_gr);
3285 if (fmd && fmd->fmd_mactime_xid < oti->oti_xid)
3286 fmd->fmd_mactime_xid = oti->oti_xid;
3287 filter_fmd_put(exp, fmd);
3290 /* setting objects attributes (including owner/group) */
3291 rc = filter_setattr_internal(exp, dentry, oinfo->oi_oa, oti);
3293 GOTO(out_unlock, rc);
3295 res = ldlm_resource_get(exp->exp_obd->obd_namespace, NULL,
3296 &res_id, LDLM_EXTENT, 0);
3299 rc = ldlm_res_lvbo_update(res, NULL, 0, 0);
3300 ldlm_resource_putref(res);
3303 oinfo->oi_oa->o_valid = OBD_MD_FLID;
3305 /* Quota release need uid/gid info */
3306 obdo_from_inode(oinfo->oi_oa, dentry->d_inode,
3307 FILTER_VALID_FLAGS | OBD_MD_FLUID | OBD_MD_FLGID);
3313 pop_ctxt(&saved, &exp->exp_obd->obd_lvfs_ctxt, NULL);
3317 /* XXX identical to osc_unpackmd */
3318 static int filter_unpackmd(struct obd_export *exp, struct lov_stripe_md **lsmp,
3319 struct lov_mds_md *lmm, int lmm_bytes)
3325 if (lmm_bytes < sizeof (*lmm)) {
3326 CERROR("lov_mds_md too small: %d, need %d\n",
3327 lmm_bytes, (int)sizeof(*lmm));
3330 /* XXX LOV_MAGIC etc check? */
3332 if (lmm->lmm_object_id == cpu_to_le64(0)) {
3333 CERROR("lov_mds_md: zero lmm_object_id\n");
3338 lsm_size = lov_stripe_md_size(1);
3342 if (*lsmp != NULL && lmm == NULL) {
3343 OBD_FREE((*lsmp)->lsm_oinfo[0], sizeof(struct lov_oinfo));
3344 OBD_FREE(*lsmp, lsm_size);
3349 if (*lsmp == NULL) {
3350 OBD_ALLOC(*lsmp, lsm_size);
3354 OBD_ALLOC((*lsmp)->lsm_oinfo[0], sizeof(struct lov_oinfo));
3355 if ((*lsmp)->lsm_oinfo[0] == NULL) {
3356 OBD_FREE(*lsmp, lsm_size);
3359 loi_init((*lsmp)->lsm_oinfo[0]);
3363 /* XXX zero *lsmp? */
3364 (*lsmp)->lsm_object_id = le64_to_cpu (lmm->lmm_object_id);
3365 LASSERT((*lsmp)->lsm_object_id);
3368 (*lsmp)->lsm_maxbytes = LUSTRE_STRIPE_MAXBYTES;
3373 /* caller must hold fo_create_locks[oa->o_gr] */
3374 static int filter_destroy_precreated(struct obd_export *exp, struct obdo *oa,
3375 struct filter_obd *filter)
3377 struct obdo doa; /* XXX obdo on stack */
3383 LASSERT(oa->o_gr != 0);
3384 LASSERT(oa->o_valid & OBD_MD_FLGROUP);
3385 LASSERT(down_trylock(&filter->fo_create_locks[oa->o_gr]) != 0);
3387 memset(&doa, 0, sizeof(doa));
3389 doa.o_valid |= OBD_MD_FLGROUP;
3390 doa.o_gr = oa->o_gr;
3391 doa.o_mode = S_IFREG;
3393 if (!test_bit(doa.o_gr, &filter->fo_destroys_in_progress)) {
3394 CERROR("%s:["LPU64"] destroys_in_progress already cleared\n",
3395 exp->exp_obd->obd_name, doa.o_gr);
3399 last = filter_last_id(filter, doa.o_gr);
3401 CWARN("%s: deleting orphan objects from "LPU64" to "LPU64"\n",
3402 exp->exp_obd->obd_name, oa->o_id + 1, last);
3404 for (id = last; id > oa->o_id; id--) {
3406 rc = filter_destroy(exp, &doa, NULL, NULL, NULL);
3407 if (rc && rc != -ENOENT) /* this is pretty fatal... */
3408 CEMERG("error destroying precreate objid "LPU64": %d\n",
3410 filter_set_last_id(filter, id - 1, doa.o_gr);
3411 /* update last_id on disk periodically so that if we restart
3412 * we don't need to re-scan all of the just-deleted objects. */
3413 if ((id & 511) == 0)
3414 filter_update_last_objid(exp->exp_obd, doa.o_gr, 0);
3417 CDEBUG(D_HA, "%s: after destroy: set last_objids["LPU64"] = "LPU64"\n",
3418 exp->exp_obd->obd_name, doa.o_gr, oa->o_id);
3420 rc = filter_update_last_objid(exp->exp_obd, doa.o_gr, 1);
3421 clear_bit(doa.o_gr, &filter->fo_destroys_in_progress);
3426 static int filter_precreate(struct obd_device *obd, struct obdo *oa,
3427 obd_gr group, int *num);
3428 /* returns a negative error or a nonnegative number of files to create */
3429 static int filter_handle_precreate(struct obd_export *exp, struct obdo *oa,
3430 obd_gr group, struct obd_trans_info *oti)
3432 struct obd_device *obd = exp->exp_obd;
3433 struct filter_obd *filter = &obd->u.filter;
3437 /* delete orphans request */
3438 if ((oa->o_valid & OBD_MD_FLFLAGS) && (oa->o_flags & OBD_FL_DELORPHAN)){
3439 if (oti->oti_conn_cnt < exp->exp_conn_cnt) {
3440 CERROR("%s: dropping old orphan cleanup request\n",
3444 /* This causes inflight precreates to abort and drop lock */
3445 set_bit(group, &filter->fo_destroys_in_progress);
3446 down(&filter->fo_create_locks[group]);
3447 if (!test_bit(group, &filter->fo_destroys_in_progress)) {
3448 CERROR("%s:["LPU64"] destroys_in_progress already cleared\n",
3449 exp->exp_obd->obd_name, group);
3450 up(&filter->fo_create_locks[group]);
3453 diff = oa->o_id - filter_last_id(filter, group);
3454 CDEBUG(D_HA, "filter_last_id() = "LPU64" -> diff = %d\n",
3455 filter_last_id(filter, group), diff);
3457 if (-diff > OST_MAX_PRECREATE) {
3458 CERROR("%s: ignoring bogus orphan destroy request: "
3459 "obdid "LPU64" last_id "LPU64"\n", obd->obd_name,
3460 oa->o_id, filter_last_id(filter, group));
3461 /* FIXME: should reset precreate_next_id on MDS */
3462 GOTO(out, rc = -EINVAL);
3465 rc = filter_destroy_precreated(exp, oa, filter);
3467 CERROR("%s: unable to write lastobjid, but "
3468 "orphans were deleted\n", obd->obd_name);
3471 /* XXX: Used by MDS for the first time! */
3472 clear_bit(group, &filter->fo_destroys_in_progress);
3475 down(&filter->fo_create_locks[group]);
3476 if (oti->oti_conn_cnt < exp->exp_conn_cnt) {
3477 CERROR("%s: dropping old precreate request\n",
3481 /* only precreate if group == 0 and o_id is specfied */
3482 if (group < FILTER_GROUP_MDS0 || oa->o_id == 0)
3485 diff = oa->o_id - filter_last_id(filter, group);
3486 CDEBUG(D_RPCTRACE, "filter_last_id() = "LPU64" -> diff = %d\n",
3487 filter_last_id(filter, group), diff);
3489 LASSERTF(diff >= 0,"%s: "LPU64" - "LPU64" = %d\n",obd->obd_name,
3490 oa->o_id, filter_last_id(filter, group), diff);
3494 oa->o_id = filter_last_id(&obd->u.filter, group);
3495 rc = filter_precreate(obd, oa, group, &diff);
3496 oa->o_id = filter_last_id(&obd->u.filter, group);
3498 oa->o_valid = OBD_MD_FLID | OBD_MD_FLGROUP;
3501 /* else diff == 0 */
3504 up(&filter->fo_create_locks[group]);
3508 static int filter_statfs(struct obd_device *obd, struct obd_statfs *osfs,
3509 __u64 max_age, __u32 flags)
3511 struct filter_obd *filter = &obd->u.filter;
3512 int blockbits = obd->u.obt.obt_sb->s_blocksize_bits;
3516 /* at least try to account for cached pages. its still racey and
3517 * might be under-reporting if clients haven't announced their
3518 * caches with brw recently */
3519 spin_lock(&obd->obd_osfs_lock);
3520 rc = fsfilt_statfs(obd, obd->u.obt.obt_sb, max_age);
3521 memcpy(osfs, &obd->obd_osfs, sizeof(*osfs));
3522 spin_unlock(&obd->obd_osfs_lock);
3524 CDEBUG(D_SUPER | D_CACHE, "blocks cached "LPU64" granted "LPU64
3525 " pending "LPU64" free "LPU64" avail "LPU64"\n",
3526 filter->fo_tot_dirty, filter->fo_tot_granted,
3527 filter->fo_tot_pending,
3528 osfs->os_bfree << blockbits, osfs->os_bavail << blockbits);
3530 filter_grant_sanity_check(obd, __FUNCTION__);
3532 osfs->os_bavail -= min(osfs->os_bavail, GRANT_FOR_LLOG(obd) +
3533 ((filter->fo_tot_dirty + filter->fo_tot_pending +
3534 osfs->os_bsize - 1) >> blockbits));
3536 /* set EROFS to state field if FS is mounted as RDONLY. The goal is to
3537 * stop creating files on MDS if OST is not good shape to create
3539 osfs->os_state = (filter->fo_obt.obt_sb->s_flags & MS_RDONLY) ?
3544 static int filter_use_existing_obj(struct obd_device *obd,
3545 struct dentry *dchild, void **handle,
3548 struct inode *inode = dchild->d_inode;
3552 if ((inode->i_mode & (S_ISUID | S_ISGID)) == (S_ISUID|S_ISGID))
3555 *handle = fsfilt_start_log(obd, inode, FSFILT_OP_SETATTR, NULL, 1);
3556 if (IS_ERR(*handle))
3557 return PTR_ERR(*handle);
3559 iattr.ia_valid = ATTR_MODE;
3560 iattr.ia_mode = S_ISUID | S_ISGID |0666;
3561 rc = fsfilt_setattr(obd, dchild, *handle, &iattr, 1);
3569 /* We rely on the fact that only one thread will be creating files in a given
3570 * group at a time, which is why we don't need an atomic filter_get_new_id.
3571 * Even if we had that atomic function, the following race would exist:
3573 * thread 1: gets id x from filter_next_id
3574 * thread 2: gets id (x + 1) from filter_next_id
3575 * thread 2: creates object (x + 1)
3576 * thread 1: tries to create object x, gets -ENOSPC
3578 * Caller must hold fo_create_locks[group]
3580 static int filter_precreate(struct obd_device *obd, struct obdo *oa,
3581 obd_gr group, int *num)
3583 struct dentry *dchild = NULL, *dparent = NULL;
3584 struct filter_obd *filter;
3585 struct obd_statfs *osfs;
3586 int err = 0, rc = 0, recreate_obj = 0, i;
3587 cfs_time_t enough_time = cfs_time_shift(DISK_TIMEOUT/2);
3589 void *handle = NULL;
3592 filter = &obd->u.filter;
3594 LASSERT(down_trylock(&filter->fo_create_locks[group]) != 0);
3596 OBD_FAIL_TIMEOUT(OBD_FAIL_TGT_DELAY_PRECREATE, obd_timeout / 2);
3598 if ((oa->o_valid & OBD_MD_FLFLAGS) &&
3599 (oa->o_flags & OBD_FL_RECREATE_OBJS)) {
3602 OBD_ALLOC(osfs, sizeof(*osfs));
3605 rc = filter_statfs(obd, osfs, cfs_time_current_64() - HZ, 0);
3606 if (rc == 0 && osfs->os_bavail < (osfs->os_blocks >> 10)) {
3607 CDEBUG(D_RPCTRACE,"%s: not enough space for create "
3608 LPU64"\n", obd->obd_name, osfs->os_bavail <<
3609 filter->fo_vfsmnt->mnt_sb->s_blocksize_bits);
3613 OBD_FREE(osfs, sizeof(*osfs));
3618 CDEBUG(D_RPCTRACE, "%s: precreating %d objects in group "LPU64
3619 " at "LPU64"\n", obd->obd_name, *num, group, oa->o_id);
3621 for (i = 0; i < *num && err == 0; i++) {
3622 int cleanup_phase = 0;
3624 if (test_bit(group, &filter->fo_destroys_in_progress)) {
3625 CWARN("%s: create aborted by destroy\n",
3634 last_id = filter_last_id(filter, group);
3635 if (next_id > last_id) {
3636 CERROR("Error: Trying to recreate obj greater"
3637 "than last id "LPD64" > "LPD64"\n",
3639 GOTO(cleanup, rc = -EINVAL);
3642 next_id = filter_last_id(filter, group) + 1;
3644 CDEBUG(D_INFO, "precreate objid "LPU64"\n", next_id);
3646 dparent = filter_parent_lock(obd, group, next_id);
3647 if (IS_ERR(dparent))
3648 GOTO(cleanup, rc = PTR_ERR(dparent));
3649 cleanup_phase = 1; /* filter_parent_unlock(dparent) */
3651 dchild = filter_fid2dentry(obd, dparent, group, next_id);
3653 GOTO(cleanup, rc = PTR_ERR(dchild));
3654 cleanup_phase = 2; /* f_dput(dchild) */
3656 if (dchild->d_inode != NULL) {
3657 /* This would only happen if lastobjid was bad on disk*/
3658 /* Could also happen if recreating missing obj but it
3659 * already exists. */
3661 CERROR("%s: recreating existing object %.*s?\n",
3662 obd->obd_name, dchild->d_name.len,
3663 dchild->d_name.name);
3665 /* Use these existing objects if they are
3667 if (dchild->d_inode->i_size == 0) {
3668 rc = filter_use_existing_obj(obd,dchild,
3669 &handle, &cleanup_phase);
3676 CERROR("%s: Serious error: objid %.*s already "
3677 "exists; is this filesystem corrupt?\n",
3678 obd->obd_name, dchild->d_name.len,
3679 dchild->d_name.name);
3682 GOTO(cleanup, rc = -EEXIST);
3685 handle = fsfilt_start_log(obd, dparent->d_inode,
3686 FSFILT_OP_CREATE, NULL, 1);
3688 GOTO(cleanup, rc = PTR_ERR(handle));
3691 /* We mark object SUID+SGID to flag it for accepting UID+GID
3692 * from client on first write. Currently the permission bits
3693 * on the OST are never used, so this is OK. */
3694 rc = ll_vfs_create(dparent->d_inode, dchild,
3695 S_IFREG | S_ISUID | S_ISGID | 0666, NULL);
3697 CERROR("create failed rc = %d\n", rc);
3702 if (!recreate_obj) {
3703 filter_set_last_id(filter, next_id, group);
3704 err = filter_update_last_objid(obd, group, 0);
3706 CERROR("unable to write lastobjid "
3707 "but file created\n");
3711 switch(cleanup_phase) {
3713 err = fsfilt_commit(obd, dparent->d_inode, handle, 0);
3715 CERROR("error on commit, err = %d\n", err);
3722 filter_parent_unlock(dparent);
3729 if (time_after(jiffies, enough_time)) {
3731 "%s: precreate slow - want %d got %d \n",
3732 obd->obd_name, *num, i);
3739 "%s: created %d objects for group "LPU64": "LPU64" rc %d\n",
3740 obd->obd_name, i, group, filter->fo_last_objids[group], rc);
3745 static int filter_create(struct obd_export *exp, struct obdo *oa,
3746 struct lov_stripe_md **ea, struct obd_trans_info *oti)
3748 struct filter_export_data *fed;
3749 struct obd_device *obd = NULL;
3750 struct filter_obd *filter;
3751 struct lvfs_run_ctxt saved;
3752 struct lov_stripe_md *lsm = NULL;
3753 int rc = 0, diff, group = oa->o_gr;
3756 if (!(oa->o_valid & OBD_MD_FLGROUP) || group == 0) {
3757 CERROR("!!! nid %s sent invalid object group %d\n",
3758 obd_export_nid2str(exp), group);
3763 fed = &exp->exp_filter_data;
3764 filter = &obd->u.filter;
3766 if (fed->fed_group != group) {
3767 CERROR("!!! this export (nid %s) used object group %d "
3768 "earlier; now it's trying to use group %d! This could "
3769 "be a bug in the MDS. Please report to "
3770 "http://bugzilla.lustre.org/\n",
3771 obd_export_nid2str(exp), fed->fed_group, group);
3775 CDEBUG(D_INFO, "filter_create(od->o_gr="LPU64",od->o_id="LPU64")\n",
3776 oa->o_gr, oa->o_id);
3780 rc = obd_alloc_memmd(exp, &lsm);
3787 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
3789 if ((oa->o_valid & OBD_MD_FLFLAGS) &&
3790 (oa->o_flags & OBD_FL_RECREATE_OBJS)) {
3791 if (oa->o_id > filter_last_id(filter, oa->o_gr)) {
3792 CERROR("recreate objid "LPU64" > last id "LPU64"\n",
3793 oa->o_id, filter_last_id(filter,
3798 down(&filter->fo_create_locks[oa->o_gr]);
3799 rc = filter_precreate(obd, oa, oa->o_gr, &diff);
3800 up(&filter->fo_create_locks[oa->o_gr]);
3803 rc = filter_handle_precreate(exp, oa, oa->o_gr, oti);
3806 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
3807 if (rc && ea != NULL && *ea != lsm) {
3808 obd_free_memmd(exp, &lsm);
3809 } else if (rc == 0 && ea != NULL) {
3810 /* XXX LOV STACKING: the lsm that is passed to us from
3811 * LOV does not have valid lsm_oinfo data structs, so
3812 * don't go touching that. This needs to be fixed in a
3814 lsm->lsm_object_id = oa->o_id;
3821 int filter_destroy(struct obd_export *exp, struct obdo *oa,
3822 struct lov_stripe_md *md, struct obd_trans_info *oti,
3823 struct obd_export *md_exp)
3825 unsigned int qcids[MAXQUOTAS] = {0, 0};
3826 struct obd_device *obd;
3827 struct filter_obd *filter;
3828 struct dentry *dchild = NULL, *dparent = NULL;
3829 struct lvfs_run_ctxt saved;
3830 void *handle = NULL;
3831 struct llog_cookie *fcc = NULL;
3832 int rc, rc2, cleanup_phase = 0, sync = 0;
3836 LASSERT(oa->o_valid & OBD_MD_FLGROUP);
3839 filter = &obd->u.filter;
3841 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
3844 dchild = filter_fid2dentry(obd, NULL, oa->o_gr, oa->o_id);
3846 GOTO(cleanup, rc = PTR_ERR(dchild));
3849 if (dchild->d_inode == NULL) {
3850 CDEBUG(D_INODE, "destroying non-existent object "LPU64"\n",
3852 /* If object already gone, cancel cookie right now */
3853 if (oa->o_valid & OBD_MD_FLCOOKIE) {
3854 struct llog_ctxt *ctxt;
3855 struct obd_llog_group *olg;
3856 fcc = obdo_logcookie(oa);
3857 olg = filter_find_olg(obd, oa->o_gr);
3859 CERROR(" %s: can not find olg of group %d\n",
3860 obd->obd_name, (int)oa->o_gr);
3861 GOTO(cleanup, rc = PTR_ERR(olg));
3863 llog_group_set_export(olg, exp);
3865 ctxt = llog_group_get_ctxt(olg, fcc->lgc_subsys + 1);
3866 llog_cancel(ctxt, NULL, 1, fcc, 0);
3867 llog_ctxt_put(ctxt);
3868 fcc = NULL; /* we didn't allocate fcc, don't free it */
3870 GOTO(cleanup, rc = -ENOENT);
3873 filter_prepare_destroy(obd, oa->o_id, oa->o_gr);
3875 /* Our MDC connection is established by the MDS to us */
3876 if (oa->o_valid & OBD_MD_FLCOOKIE) {
3877 OBD_ALLOC(fcc, sizeof(*fcc));
3879 memcpy(fcc, obdo_logcookie(oa), sizeof(*fcc));
3881 DQUOT_INIT(dchild->d_inode);
3883 /* we're gonna truncate it first in order to avoid possible deadlock:
3885 * open trasaction open transaction
3886 * down(i_zombie) down(i_zombie)
3887 * restart transaction
3888 * (see BUG 4180) -bzzz
3890 LOCK_INODE_MUTEX(dchild->d_inode);
3891 handle = fsfilt_start_log(obd, dchild->d_inode, FSFILT_OP_SETATTR,
3893 if (IS_ERR(handle)) {
3894 UNLOCK_INODE_MUTEX(dchild->d_inode);
3895 GOTO(cleanup, rc = PTR_ERR(handle));
3898 iattr.ia_valid = ATTR_SIZE;
3900 rc = fsfilt_setattr(obd, dchild, handle, &iattr, 1);
3901 rc2 = fsfilt_commit(obd, dchild->d_inode, handle, 0);
3902 UNLOCK_INODE_MUTEX(dchild->d_inode);
3906 GOTO(cleanup, rc = rc2);
3908 /* We don't actually need to lock the parent until we are unlinking
3909 * here, and not while truncating above. That avoids holding the
3910 * parent lock for a long time during truncate, which can block other
3911 * threads from doing anything to objects in that directory. bug 7171 */
3912 dparent = filter_parent_lock(obd, oa->o_gr, oa->o_id);
3913 if (IS_ERR(dparent))
3914 GOTO(cleanup, rc = PTR_ERR(dparent));
3915 cleanup_phase = 3; /* filter_parent_unlock */
3917 LOCK_INODE_MUTEX(dchild->d_inode);
3918 handle = fsfilt_start_log(obd, dparent->d_inode,FSFILT_OP_UNLINK,oti,1);
3919 if (IS_ERR(handle)) {
3920 UNLOCK_INODE_MUTEX(dchild->d_inode);
3921 GOTO(cleanup, rc = PTR_ERR(handle));
3923 cleanup_phase = 4; /* fsfilt_commit */
3925 /* Quota release need uid/gid of inode */
3926 obdo_from_inode(oa, dchild->d_inode, OBD_MD_FLUID|OBD_MD_FLGID);
3928 filter_fmd_drop(exp, oa->o_id, oa->o_gr);
3930 /* this drops dchild->d_inode->i_mutex unconditionally */
3931 rc = filter_destroy_internal(obd, oa->o_id, oa->o_gr, dparent, dchild);
3935 switch(cleanup_phase) {
3938 sync = fsfilt_add_journal_cb(obd, 0, oti ?
3939 oti->oti_handle : handle,
3940 filter_cancel_cookies_cb,
3942 /* If add_journal_cb failed, then filter_finish_transno
3943 * will commit the handle and we will do a sync
3944 * on commit. then we call callback directly to free
3947 rc = filter_finish_transno(exp, oti, rc, sync);
3949 filter_cancel_cookies_cb(obd, 0, fcc, rc);
3952 rc2 = fsfilt_commit(obd, dparent->d_inode, handle, 0);
3954 CERROR("error on commit, err = %d\n", rc2);
3961 filter_parent_unlock(dparent);
3965 OBD_FREE(fcc, sizeof(*fcc));
3967 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
3970 CERROR("invalid cleanup_phase %d\n", cleanup_phase);
3974 /* trigger quota release */
3975 qcids[USRQUOTA] = oa->o_uid;
3976 qcids[GRPQUOTA] = oa->o_gid;
3977 rc2 = lquota_adjust(filter_quota_interface_ref, obd, qcids, NULL, rc,
3981 CDEBUG(D_QUOTA, "filter adjust qunit! (rc:%d)\n", rc2);
3985 /* NB start and end are used for punch, but not truncate */
3986 static int filter_truncate(struct obd_export *exp, struct obd_info *oinfo,
3987 struct obd_trans_info *oti,
3988 struct ptlrpc_request_set *rqset)
3993 if (oinfo->oi_policy.l_extent.end != OBD_OBJECT_EOF) {
3994 CERROR("PUNCH not supported, only truncate: end = "LPX64"\n",
3995 oinfo->oi_policy.l_extent.end);
3999 CDEBUG(D_INODE, "calling truncate for object "LPU64", valid = "LPX64
4000 ", o_size = "LPD64"\n", oinfo->oi_oa->o_id,
4001 oinfo->oi_oa->o_valid, oinfo->oi_policy.l_extent.start);
4003 rc = filter_auth_capa(exp, NULL, oinfo_mdsno(oinfo),
4004 oinfo_capa(oinfo), CAPA_OPC_OSS_TRUNC);
4008 oinfo->oi_oa->o_size = oinfo->oi_policy.l_extent.start;
4009 rc = filter_setattr(exp, oinfo, oti);
4013 static int filter_sync(struct obd_export *exp, struct obdo *oa,
4014 struct lov_stripe_md *lsm, obd_off start, obd_off end,
4017 struct lvfs_run_ctxt saved;
4018 struct filter_obd *filter;
4019 struct dentry *dentry;
4023 rc = filter_auth_capa(exp, NULL, obdo_mdsno(oa),
4024 (struct lustre_capa *)capa, CAPA_OPC_OSS_WRITE);
4028 filter = &exp->exp_obd->u.filter;
4030 /* an objid of zero is taken to mean "sync whole filesystem" */
4031 if (!oa || !(oa->o_valid & OBD_MD_FLID)) {
4032 rc = fsfilt_sync(exp->exp_obd, filter->fo_obt.obt_sb);
4033 /* flush any remaining cancel messages out to the target */
4034 filter_sync_llogs(exp->exp_obd, exp);
4038 dentry = filter_oa2dentry(exp->exp_obd, oa);
4040 RETURN(PTR_ERR(dentry));
4042 push_ctxt(&saved, &exp->exp_obd->obd_lvfs_ctxt, NULL);
4044 LOCK_INODE_MUTEX(dentry->d_inode);
4046 rc = filemap_fdatawrite(dentry->d_inode->i_mapping);
4048 /* just any file to grab fsync method - "file" arg unused */
4049 struct file *file = filter->fo_rcvd_filp;
4051 if (file->f_op && file->f_op->fsync)
4052 rc = file->f_op->fsync(NULL, dentry, 1);
4054 rc2 = filemap_fdatawait(dentry->d_inode->i_mapping);
4058 UNLOCK_INODE_MUTEX(dentry->d_inode);
4060 oa->o_valid = OBD_MD_FLID;
4061 obdo_from_inode(oa, dentry->d_inode, FILTER_VALID_FLAGS);
4063 pop_ctxt(&saved, &exp->exp_obd->obd_lvfs_ctxt, NULL);
4069 static int filter_get_info(struct obd_export *exp, __u32 keylen,
4070 void *key, __u32 *vallen, void *val,
4071 struct lov_stripe_md *lsm)
4073 struct obd_device *obd;
4076 obd = class_exp2obd(exp);
4078 CDEBUG(D_IOCTL, "invalid client export %p\n", exp);
4082 if (KEY_IS(KEY_BLOCKSIZE)) {
4083 __u32 *blocksize = val;
4085 if (*vallen < sizeof(*blocksize))
4087 *blocksize = obd->u.obt.obt_sb->s_blocksize;
4089 *vallen = sizeof(*blocksize);
4093 if (KEY_IS(KEY_BLOCKSIZE_BITS)) {
4094 __u32 *blocksize_bits = val;
4095 if (blocksize_bits) {
4096 if (*vallen < sizeof(*blocksize_bits))
4098 *blocksize_bits = obd->u.obt.obt_sb->s_blocksize_bits;
4100 *vallen = sizeof(*blocksize_bits);
4104 if (KEY_IS(KEY_LAST_ID)) {
4105 obd_id *last_id = val;
4106 /* FIXME: object groups */
4108 if (*vallen < sizeof(*last_id))
4110 *last_id = filter_last_id(&obd->u.filter,
4111 exp->exp_filter_data.fed_group);
4113 *vallen = sizeof(*last_id);
4117 CDEBUG(D_IOCTL, "invalid key\n");
4121 static int filter_set_info_async(struct obd_export *exp, __u32 keylen,
4122 void *key, __u32 vallen, void *val,
4123 struct ptlrpc_request_set *set)
4125 struct obd_device *obd;
4126 struct obd_llog_group *olg;
4127 struct llog_ctxt *ctxt;
4133 CDEBUG(D_IOCTL, "invalid export %p\n", exp);
4137 if (KEY_IS(KEY_CAPA_KEY)) {
4138 rc = filter_update_capa_key(obd, (struct lustre_capa_key *)val);
4140 CERROR("filter update capability key failed: %d\n", rc);
4144 if (KEY_IS(KEY_REVIMP_UPD)) {
4145 filter_revimp_update(exp);
4149 if (!KEY_IS(KEY_MDS_CONN))
4152 LCONSOLE_WARN("%s: received MDS connection from %s\n", obd->obd_name,
4153 obd_export_nid2str(exp));
4154 obd->u.filter.fo_mdc_conn.cookie = exp->exp_handle.h_cookie;
4156 /* setup llog imports */
4157 LASSERT(val != NULL);
4158 group = (int)(*(__u32 *)val);
4159 LASSERT(group >= FILTER_GROUP_MDS0);
4161 olg = filter_find_create_olg(obd, group);
4163 RETURN(PTR_ERR(olg));
4165 llog_group_set_export(olg, exp);
4167 ctxt = llog_group_get_ctxt(olg, LLOG_MDS_OST_REPL_CTXT);
4168 LASSERTF(ctxt != NULL, "ctxt is null\n"),
4170 rc = llog_receptor_accept(ctxt, exp->exp_imp_reverse);
4171 llog_ctxt_put(ctxt);
4173 lquota_setinfo(filter_quota_interface_ref, exp, obd);
4178 int filter_iocontrol(unsigned int cmd, struct obd_export *exp,
4179 int len, void *karg, void *uarg)
4181 struct obd_device *obd = exp->exp_obd;
4182 struct obd_ioctl_data *data = karg;
4186 case OBD_IOC_ABORT_RECOVERY: {
4187 CERROR("aborting recovery for device %s\n", obd->obd_name);
4188 target_stop_recovery_thread(obd);
4192 case OBD_IOC_SYNC: {
4193 CDEBUG(D_RPCTRACE, "syncing ost %s\n", obd->obd_name);
4194 rc = fsfilt_sync(obd, obd->u.obt.obt_sb);
4198 case OBD_IOC_SET_READONLY: {
4200 struct super_block *sb = obd->u.obt.obt_sb;
4201 struct inode *inode = sb->s_root->d_inode;
4202 BDEVNAME_DECLARE_STORAGE(tmp);
4203 CERROR("*** setting device %s read-only ***\n",
4204 ll_bdevname(sb, tmp));
4206 handle = fsfilt_start(obd, inode, FSFILT_OP_MKNOD, NULL);
4207 if (!IS_ERR(handle))
4208 rc = fsfilt_commit(obd, inode, handle, 1);
4210 CDEBUG(D_HA, "syncing ost %s\n", obd->obd_name);
4211 rc = fsfilt_sync(obd, obd->u.obt.obt_sb);
4213 lvfs_set_rdonly(obd, obd->u.obt.obt_sb);
4217 case OBD_IOC_CATLOGLIST: {
4218 rc = llog_catalog_list(obd, 1, data);
4222 case OBD_IOC_LLOG_CANCEL:
4223 case OBD_IOC_LLOG_REMOVE:
4224 case OBD_IOC_LLOG_INFO:
4225 case OBD_IOC_LLOG_PRINT: {
4226 /* FIXME to be finished */
4227 RETURN(-EOPNOTSUPP);
4229 struct llog_ctxt *ctxt = NULL;
4231 push_ctxt(&saved, &ctxt->loc_exp->exp_obd->obd_lvfs_ctxt, NULL);
4232 rc = llog_ioctl(ctxt, cmd, data);
4233 pop_ctxt(&saved, &ctxt->loc_exp->exp_obd->obd_lvfs_ctxt, NULL);
4246 static int filter_health_check(struct obd_device *obd)
4248 #ifdef USE_HEALTH_CHECK_WRITE
4249 struct filter_obd *filter = &obd->u.filter;
4254 * health_check to return 0 on healthy
4255 * and 1 on unhealthy.
4257 if (obd->u.obt.obt_sb->s_flags & MS_RDONLY)
4260 #ifdef USE_HEALTH_CHECK_WRITE
4261 LASSERT(filter->fo_health_check_filp != NULL);
4262 rc |= !!lvfs_check_io_health(obd, filter->fo_health_check_filp);
4267 static struct dentry *filter_lvfs_fid2dentry(__u64 id, __u32 gen, __u64 gr,
4270 return filter_fid2dentry(data, NULL, gr, id);
4273 static int filter_process_config(struct obd_device *obd, obd_count len,
4276 struct lustre_cfg *lcfg = buf;
4277 struct lprocfs_static_vars lvars;
4280 switch (lcfg->lcfg_command) {
4281 case LCFG_SPTLRPC_CONF: {
4282 struct filter_obd *filter = &obd->u.filter;
4283 struct sptlrpc_conf_log *log;
4284 struct sptlrpc_rule_set tmp_rset;
4286 log = sptlrpc_conf_log_extract(lcfg);
4292 sptlrpc_rule_set_init(&tmp_rset);
4294 rc = sptlrpc_rule_set_from_log(&tmp_rset, log);
4296 CERROR("obd %s: failed get sptlrpc rules: %d\n",
4301 write_lock(&filter->fo_sptlrpc_lock);
4302 sptlrpc_rule_set_free(&filter->fo_sptlrpc_rset);
4303 filter->fo_sptlrpc_rset = tmp_rset;
4304 write_unlock(&filter->fo_sptlrpc_lock);
4306 sptlrpc_target_update_exp_flavor(obd, &tmp_rset);
4310 lprocfs_filter_init_vars(&lvars);
4312 rc = class_process_proc_param(PARAM_OST, lvars.obd_vars,
4320 static struct lvfs_callback_ops filter_lvfs_ops = {
4321 l_fid2dentry: filter_lvfs_fid2dentry,
4324 static struct obd_ops filter_obd_ops = {
4325 .o_owner = THIS_MODULE,
4326 .o_get_info = filter_get_info,
4327 .o_set_info_async = filter_set_info_async,
4328 .o_setup = filter_setup,
4329 .o_precleanup = filter_precleanup,
4330 .o_cleanup = filter_cleanup,
4331 .o_connect = filter_connect,
4332 .o_reconnect = filter_reconnect,
4333 .o_disconnect = filter_disconnect,
4334 .o_ping = filter_ping,
4335 .o_init_export = filter_init_export,
4336 .o_destroy_export = filter_destroy_export,
4337 .o_statfs = filter_statfs,
4338 .o_getattr = filter_getattr,
4339 .o_unpackmd = filter_unpackmd,
4340 .o_create = filter_create,
4341 .o_setattr = filter_setattr,
4342 .o_destroy = filter_destroy,
4343 .o_brw = filter_brw,
4344 .o_punch = filter_truncate,
4345 .o_sync = filter_sync,
4346 .o_preprw = filter_preprw,
4347 .o_commitrw = filter_commitrw,
4348 .o_llog_init = filter_llog_init,
4349 .o_llog_connect = filter_llog_connect,
4350 .o_llog_finish = filter_llog_finish,
4351 .o_iocontrol = filter_iocontrol,
4352 .o_health_check = filter_health_check,
4353 .o_process_config = filter_process_config,
4356 quota_interface_t *filter_quota_interface_ref;
4357 extern quota_interface_t filter_quota_interface;
4359 static int __init obdfilter_init(void)
4361 struct lprocfs_static_vars lvars;
4364 lprocfs_filter_init_vars(&lvars);
4366 request_module("lquota");
4367 OBD_ALLOC(obdfilter_created_scratchpad,
4368 OBDFILTER_CREATED_SCRATCHPAD_ENTRIES *
4369 sizeof(*obdfilter_created_scratchpad));
4370 if (obdfilter_created_scratchpad == NULL)
4373 ll_fmd_cachep = cfs_mem_cache_create("ll_fmd_cache",
4374 sizeof(struct filter_mod_data),
4377 GOTO(out, rc = -ENOMEM);
4379 filter_quota_interface_ref = PORTAL_SYMBOL_GET(filter_quota_interface);
4380 init_obd_quota_ops(filter_quota_interface_ref, &filter_obd_ops);
4382 rc = class_register_type(&filter_obd_ops, NULL, lvars.module_vars,
4383 LUSTRE_OST_NAME, NULL);
4387 err = cfs_mem_cache_destroy(ll_fmd_cachep);
4388 LASSERTF(err == 0, "Cannot destroy ll_fmd_cachep: rc %d\n",err);
4389 ll_fmd_cachep = NULL;
4391 if (filter_quota_interface_ref)
4392 PORTAL_SYMBOL_PUT(filter_quota_interface);
4394 OBD_FREE(obdfilter_created_scratchpad,
4395 OBDFILTER_CREATED_SCRATCHPAD_ENTRIES *
4396 sizeof(*obdfilter_created_scratchpad));
4402 static void __exit obdfilter_exit(void)
4404 if (filter_quota_interface_ref)
4405 PORTAL_SYMBOL_PUT(filter_quota_interface);
4407 if (ll_fmd_cachep) {
4408 int rc = cfs_mem_cache_destroy(ll_fmd_cachep);
4409 LASSERTF(rc == 0, "Cannot destroy ll_fmd_cachep: rc %d\n", rc);
4410 ll_fmd_cachep = NULL;
4413 class_unregister_type(LUSTRE_OST_NAME);
4414 OBD_FREE(obdfilter_created_scratchpad,
4415 OBDFILTER_CREATED_SCRATCHPAD_ENTRIES *
4416 sizeof(*obdfilter_created_scratchpad));
4419 MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
4420 MODULE_DESCRIPTION("Lustre Filtering OBD driver");
4421 MODULE_LICENSE("GPL");
4423 module_init(obdfilter_init);
4424 module_exit(obdfilter_exit);