1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
6 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 only,
10 * as published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License version 2 for more details (a copy is included
16 * in the LICENSE file that accompanied this code).
18 * You should have received a copy of the GNU General Public License
19 * version 2 along with this program; If not, see
20 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
22 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
23 * CA 95054 USA or visit www.sun.com if you need additional information or
29 * Copyright 2008 Sun Microsystems, Inc. All rights reserved
30 * Use is subject to license terms.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
36 * lustre/obdfilter/filter.c
38 * Author: Peter Braam <braam@clusterfs.com>
39 * Author: Andreas Dilger <adilger@clusterfs.com>
43 * Invariant: Get O/R i_mutex for lookup, if needed, before any journal ops
44 * (which need to get journal_lock, may block if journal full).
46 * Invariant: Call filter_start_transno() before any journal ops to avoid the
47 * same deadlock problem. We can (and want) to get rid of the
48 * transno sem in favour of the dir/inode i_mutex to avoid single
49 * threaded operation on the OST.
52 #define DEBUG_SUBSYSTEM S_FILTER
54 #ifndef AUTOCONF_INCLUDED
55 #include <linux/config.h>
57 #include <linux/module.h>
59 #include <linux/dcache.h>
60 #include <linux/init.h>
61 #include <linux/version.h>
62 #include <linux/sched.h>
63 #include <linux/mount.h>
64 #include <linux/buffer_head.h>
66 #include <obd_cksum.h>
67 #include <obd_class.h>
69 #include <lustre_dlm.h>
70 #include <lustre_fsfilt.h>
71 #include <lprocfs_status.h>
72 #include <lustre_log.h>
73 #include <libcfs/list.h>
74 #include <lustre_disk.h>
75 #include <lustre_quota.h>
76 #include <linux/slab.h>
77 #include <lustre_param.h>
78 #include <lustre/ll_fiemap.h>
80 #include "filter_internal.h"
82 static struct lvfs_callback_ops filter_lvfs_ops;
83 cfs_mem_cache_t *ll_fmd_cachep;
85 static void filter_commit_cb(struct obd_device *obd, __u64 transno,
86 void *cb_data, int error)
88 struct obd_export *exp = cb_data;
89 LASSERT(exp->exp_obd == obd);
90 obd_transno_commit_cb(obd, transno, exp, error);
91 class_export_cb_put(exp);
94 int filter_version_get_check(struct obd_export *exp,
95 struct obd_trans_info *oti, struct inode *inode)
99 if (inode == NULL || oti == NULL)
102 curr_version = fsfilt_get_version(exp->exp_obd, inode);
103 if ((__s64)curr_version == -EOPNOTSUPP)
105 /* VBR: version is checked always because costs nothing */
106 if (oti->oti_pre_version != 0 &&
107 oti->oti_pre_version != curr_version) {
108 CDEBUG(D_INODE, "Version mismatch "LPX64" != "LPX64"\n",
109 oti->oti_pre_version, curr_version);
110 cfs_spin_lock(&exp->exp_lock);
111 exp->exp_vbr_failed = 1;
112 cfs_spin_unlock(&exp->exp_lock);
115 oti->oti_pre_version = curr_version;
119 /* Assumes caller has already pushed us into the kernel context. */
120 int filter_finish_transno(struct obd_export *exp, struct inode *inode,
121 struct obd_trans_info *oti, int rc, int force_sync)
123 struct filter_obd *filter = &exp->exp_obd->u.filter;
124 struct filter_export_data *fed = &exp->exp_filter_data;
125 struct lsd_client_data *lcd;
128 int err, log_pri = D_RPCTRACE;
130 /* Propagate error code. */
134 if (!exp->exp_obd->obd_replayable || oti == NULL)
137 cfs_mutex_down(&fed->fed_lcd_lock);
139 /* if the export has already been disconnected, we have no last_rcvd slot,
140 * update server data with latest transno then */
142 cfs_mutex_up(&fed->fed_lcd_lock);
143 CWARN("commit transaction for disconnected client %s: rc %d\n",
144 exp->exp_client_uuid.uuid, rc);
145 err = filter_update_server_data(exp->exp_obd,
146 filter->fo_rcvd_filp,
151 /* we don't allocate new transnos for replayed requests */
152 cfs_spin_lock(&filter->fo_translock);
153 if (oti->oti_transno == 0) {
154 last_rcvd = le64_to_cpu(filter->fo_fsd->lsd_last_transno) + 1;
155 filter->fo_fsd->lsd_last_transno = cpu_to_le64(last_rcvd);
157 last_rcvd = oti->oti_transno;
158 if (last_rcvd > le64_to_cpu(filter->fo_fsd->lsd_last_transno))
159 filter->fo_fsd->lsd_last_transno =
160 cpu_to_le64(last_rcvd);
162 oti->oti_transno = last_rcvd;
164 LASSERT(last_rcvd >= le64_to_cpu(lcd->lcd_last_transno));
165 lcd->lcd_last_transno = cpu_to_le64(last_rcvd);
166 lcd->lcd_pre_versions[0] = cpu_to_le64(oti->oti_pre_version);
167 lcd->lcd_last_xid = cpu_to_le64(oti->oti_xid);
168 cfs_spin_unlock(&filter->fo_translock);
171 fsfilt_set_version(exp->exp_obd, inode, last_rcvd);
173 off = fed->fed_lr_off;
175 CERROR("%s: client idx %d is %lld\n", exp->exp_obd->obd_name,
176 fed->fed_lr_idx, fed->fed_lr_off);
179 class_export_cb_get(exp); /* released when the cb is called */
181 force_sync = fsfilt_add_journal_cb(exp->exp_obd,
187 err = fsfilt_write_record(exp->exp_obd, filter->fo_rcvd_filp,
188 lcd, sizeof(*lcd), &off,
189 force_sync | exp->exp_need_sync);
191 filter_commit_cb(exp->exp_obd, last_rcvd, exp, err);
199 CDEBUG(log_pri, "wrote trans "LPU64" for client %s at #%d: err = %d\n",
200 last_rcvd, lcd->lcd_uuid, fed->fed_lr_idx, err);
201 cfs_mutex_up(&fed->fed_lcd_lock);
205 void f_dput(struct dentry *dentry)
207 /* Can't go inside filter_ddelete because it can block */
208 CDEBUG(D_INODE, "putting %s: %p, count = %d\n",
209 dentry->d_name.name, dentry, atomic_read(&dentry->d_count) - 1);
210 LASSERT(atomic_read(&dentry->d_count) > 0);
215 static void init_brw_stats(struct brw_stats *brw_stats)
218 for (i = 0; i < BRW_LAST; i++)
219 cfs_spin_lock_init(&brw_stats->hist[i].oh_lock);
222 static int lprocfs_init_rw_stats(struct obd_device *obd,
223 struct lprocfs_stats **stats)
227 num_stats = (sizeof(*obd->obd_type->typ_dt_ops) / sizeof(void *)) +
228 LPROC_FILTER_LAST - 1;
229 *stats = lprocfs_alloc_stats(num_stats, LPROCFS_STATS_FLAG_NOPERCPU);
233 lprocfs_init_ops_stats(LPROC_FILTER_LAST, *stats);
234 lprocfs_counter_init(*stats, LPROC_FILTER_READ_BYTES,
235 LPROCFS_CNTR_AVGMINMAX, "read_bytes", "bytes");
236 lprocfs_counter_init(*stats, LPROC_FILTER_WRITE_BYTES,
237 LPROCFS_CNTR_AVGMINMAX, "write_bytes", "bytes");
242 /* brw_stats are 2128, ops are 3916, ldlm are 204, so 6248 bytes per client,
243 plus the procfs overhead :( */
244 static int filter_export_stats_init(struct obd_device *obd,
245 struct obd_export *exp,
251 if (obd_uuid_equals(&exp->exp_client_uuid, &obd->obd_uuid))
252 /* Self-export gets no proc entry */
255 rc = lprocfs_exp_setup(exp, client_nid, &newnid);
257 /* Mask error for already created
265 struct nid_stat *tmp = exp->exp_nid_stats;
266 LASSERT(tmp != NULL);
268 OBD_ALLOC(tmp->nid_brw_stats, sizeof(struct brw_stats));
269 if (tmp->nid_brw_stats == NULL)
272 init_brw_stats(tmp->nid_brw_stats);
273 rc = lprocfs_seq_create(exp->exp_nid_stats->nid_proc, "brw_stats",
274 0644, &filter_per_nid_stats_fops,
277 CWARN("Error adding the brw_stats file\n");
279 rc = lprocfs_init_rw_stats(obd, &exp->exp_nid_stats->nid_stats);
283 rc = lprocfs_register_stats(tmp->nid_proc, "stats",
287 /* Always add in ldlm_stats */
288 tmp->nid_ldlm_stats =
289 lprocfs_alloc_stats(LDLM_LAST_OPC - LDLM_FIRST_OPC,
290 LPROCFS_STATS_FLAG_NOPERCPU);
291 if (tmp->nid_ldlm_stats == NULL)
294 lprocfs_init_ldlm_stats(tmp->nid_ldlm_stats);
295 rc = lprocfs_register_stats(tmp->nid_proc, "ldlm_stats",
296 tmp->nid_ldlm_stats);
304 /* Add client data to the FILTER. We use a bitmap to locate a free space
305 * in the last_rcvd file if cl_idx is -1 (i.e. a new client).
306 * Otherwise, we have just read the data from the last_rcvd file and
307 * we know its offset. */
308 static int filter_client_add(struct obd_device *obd, struct obd_export *exp,
311 struct filter_obd *filter = &obd->u.filter;
312 struct filter_export_data *fed = &exp->exp_filter_data;
313 unsigned long *bitmap = filter->fo_last_rcvd_slots;
314 int new_client = (cl_idx == -1);
318 LASSERT(bitmap != NULL);
319 LASSERTF(cl_idx > -2, "%d\n", cl_idx);
322 if (strcmp(fed->fed_lcd->lcd_uuid, obd->obd_uuid.uuid) == 0)
325 /* the bitmap operations can handle cl_idx > sizeof(long) * 8, so
326 * there's no need for extra complication here
329 cl_idx = cfs_find_first_zero_bit(bitmap, LR_MAX_CLIENTS);
331 if (cl_idx >= LR_MAX_CLIENTS) {
332 CERROR("no room for %u client - fix LR_MAX_CLIENTS\n",
336 if (cfs_test_and_set_bit(cl_idx, bitmap)) {
337 cl_idx = cfs_find_next_zero_bit(bitmap, LR_MAX_CLIENTS,
342 if (cfs_test_and_set_bit(cl_idx, bitmap)) {
343 CERROR("FILTER client %d: bit already set in bitmap!\n",
349 fed->fed_lr_idx = cl_idx;
350 fed->fed_lr_off = le32_to_cpu(filter->fo_fsd->lsd_client_start) +
351 cl_idx * le16_to_cpu(filter->fo_fsd->lsd_client_size);
352 cfs_init_mutex(&fed->fed_lcd_lock);
353 LASSERTF(fed->fed_lr_off > 0, "fed_lr_off = %llu\n", fed->fed_lr_off);
355 CDEBUG(D_INFO, "client at index %d (%llu) with UUID '%s' added\n",
356 fed->fed_lr_idx, fed->fed_lr_off, fed->fed_lcd->lcd_uuid);
359 struct lvfs_run_ctxt saved;
360 loff_t off = fed->fed_lr_off;
364 CDEBUG(D_INFO, "writing client lcd at idx %u (%llu) (len %u)\n",
365 fed->fed_lr_idx,off,(unsigned int)sizeof(*fed->fed_lcd));
367 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
368 /* Transaction needed to fix bug 1403 */
369 handle = fsfilt_start(obd,
370 filter->fo_rcvd_filp->f_dentry->d_inode,
371 FSFILT_OP_SETATTR, NULL);
372 if (IS_ERR(handle)) {
373 rc = PTR_ERR(handle);
374 CERROR("unable to start transaction: rc %d\n", rc);
376 fed->fed_lcd->lcd_last_epoch =
377 filter->fo_fsd->lsd_start_epoch;
378 exp->exp_last_request_time = cfs_time_current_sec();
379 rc = fsfilt_add_journal_cb(obd, 0, handle,
380 target_client_add_cb,
381 class_export_cb_get(exp));
383 cfs_spin_lock(&exp->exp_lock);
384 exp->exp_need_sync = 1;
385 cfs_spin_unlock(&exp->exp_lock);
387 rc = fsfilt_write_record(obd, filter->fo_rcvd_filp,
389 sizeof(*fed->fed_lcd),
390 &off, rc /* sync if no cb */);
392 filter->fo_rcvd_filp->f_dentry->d_inode,
395 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
398 CERROR("error writing %s client idx %u: rc %d\n",
399 LAST_RCVD, fed->fed_lr_idx, rc);
406 struct lsd_client_data zero_lcd; /* globals are implicitly zeroed */
408 static int filter_client_free(struct obd_export *exp)
410 struct filter_export_data *fed = &exp->exp_filter_data;
411 struct filter_obd *filter = &exp->exp_obd->u.filter;
412 struct obd_device *obd = exp->exp_obd;
413 struct lvfs_run_ctxt saved;
414 struct lsd_client_data *lcd = fed->fed_lcd;
422 /* XXX if lcd_uuid were a real obd_uuid, I could use obd_uuid_equals */
423 if (strcmp(lcd->lcd_uuid, obd->obd_uuid.uuid ) == 0)
426 LASSERT(filter->fo_last_rcvd_slots != NULL);
428 off = fed->fed_lr_off;
430 CDEBUG(D_INFO, "freeing client at idx %u, offset %lld with UUID '%s'\n",
431 fed->fed_lr_idx, fed->fed_lr_off, lcd->lcd_uuid);
433 /* Don't clear fed_lr_idx here as it is likely also unset. At worst
434 * we leak a client slot that will be cleaned on the next recovery. */
436 CERROR("%s: client idx %d has med_off %lld\n",
437 obd->obd_name, fed->fed_lr_idx, off);
438 GOTO(free, rc = -EINVAL);
441 /* Clear the bit _after_ zeroing out the client so we don't
442 race with filter_client_add and zero out new clients.*/
443 if (!cfs_test_bit(fed->fed_lr_idx, filter->fo_last_rcvd_slots)) {
444 CERROR("FILTER client %u: bit already clear in bitmap!!\n",
449 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
450 /* Make sure the server's last_transno is up to date.
451 * This should be done before zeroing client slot so last_transno will
452 * be in server data or in client data in case of failure */
453 filter_update_server_data(obd, filter->fo_rcvd_filp, filter->fo_fsd);
455 cfs_mutex_down(&fed->fed_lcd_lock);
456 rc = fsfilt_write_record(obd, filter->fo_rcvd_filp, &zero_lcd,
457 sizeof(zero_lcd), &off, 0);
459 cfs_mutex_up(&fed->fed_lcd_lock);
460 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
462 CDEBUG(rc == 0 ? D_INFO : D_ERROR,
463 "zero out client %s at idx %u/%llu in %s, rc %d\n",
464 lcd->lcd_uuid, fed->fed_lr_idx, fed->fed_lr_off,
467 if (!cfs_test_and_clear_bit(fed->fed_lr_idx,
468 filter->fo_last_rcvd_slots)) {
469 CERROR("FILTER client %u: bit already clear in bitmap!!\n",
476 cfs_mutex_down(&fed->fed_lcd_lock);
478 cfs_mutex_up(&fed->fed_lcd_lock);
484 /* drop fmd reference, free it if last ref. must be called with fed_lock held.*/
485 static inline void filter_fmd_put_nolock(struct filter_export_data *fed,
486 struct filter_mod_data *fmd)
488 LASSERT_SPIN_LOCKED(&fed->fed_lock);
489 if (--fmd->fmd_refcount == 0) {
490 /* XXX when we have persistent reservations and the handle
491 * is stored herein we need to drop it here. */
492 fed->fed_mod_count--;
493 cfs_list_del(&fmd->fmd_list);
494 OBD_SLAB_FREE(fmd, ll_fmd_cachep, sizeof(*fmd));
498 /* drop fmd reference, free it if last ref */
499 void filter_fmd_put(struct obd_export *exp, struct filter_mod_data *fmd)
501 struct filter_export_data *fed;
506 fed = &exp->exp_filter_data;
507 cfs_spin_lock(&fed->fed_lock);
508 filter_fmd_put_nolock(fed, fmd); /* caller reference */
509 cfs_spin_unlock(&fed->fed_lock);
512 /* expire entries from the end of the list if there are too many
513 * or they are too old */
514 static void filter_fmd_expire_nolock(struct filter_obd *filter,
515 struct filter_export_data *fed,
516 struct filter_mod_data *keep)
518 struct filter_mod_data *fmd, *tmp;
520 cfs_list_for_each_entry_safe(fmd, tmp, &fed->fed_mod_list, fmd_list) {
524 if (cfs_time_before(jiffies, fmd->fmd_expire) &&
525 fed->fed_mod_count < filter->fo_fmd_max_num)
528 cfs_list_del_init(&fmd->fmd_list);
529 filter_fmd_put_nolock(fed, fmd); /* list reference */
533 void filter_fmd_expire(struct obd_export *exp)
535 cfs_spin_lock(&exp->exp_filter_data.fed_lock);
536 filter_fmd_expire_nolock(&exp->exp_obd->u.filter,
537 &exp->exp_filter_data, NULL);
538 cfs_spin_unlock(&exp->exp_filter_data.fed_lock);
541 /* find specified objid, group in export fmd list.
542 * caller must hold fed_lock and take fmd reference itself */
543 static struct filter_mod_data *filter_fmd_find_nolock(struct filter_obd *filter,
544 struct filter_export_data *fed,
545 obd_id objid, obd_gr group)
547 struct filter_mod_data *found = NULL, *fmd;
549 LASSERT_SPIN_LOCKED(&fed->fed_lock);
551 cfs_list_for_each_entry_reverse(fmd, &fed->fed_mod_list, fmd_list) {
552 if (fmd->fmd_id == objid && fmd->fmd_gr == group) {
554 cfs_list_del(&fmd->fmd_list);
555 cfs_list_add_tail(&fmd->fmd_list, &fed->fed_mod_list);
556 fmd->fmd_expire = jiffies + filter->fo_fmd_max_age;
561 filter_fmd_expire_nolock(filter, fed, found);
566 /* Find fmd based on objid and group, or return NULL if not found. */
567 struct filter_mod_data *filter_fmd_find(struct obd_export *exp,
568 obd_id objid, obd_gr group)
570 struct filter_mod_data *fmd;
572 cfs_spin_lock(&exp->exp_filter_data.fed_lock);
573 fmd = filter_fmd_find_nolock(&exp->exp_obd->u.filter,
574 &exp->exp_filter_data, objid, group);
576 fmd->fmd_refcount++; /* caller reference */
577 cfs_spin_unlock(&exp->exp_filter_data.fed_lock);
582 /* Find fmd based on objid and group, or create a new one if none is found.
583 * It is possible for this function to return NULL under memory pressure,
584 * or if objid = 0 is passed (which will only cause old entries to expire).
585 * Currently this is not fatal because any fmd state is transient and
586 * may also be freed when it gets sufficiently old. */
587 struct filter_mod_data *filter_fmd_get(struct obd_export *exp,
588 obd_id objid, obd_gr group)
590 struct filter_export_data *fed = &exp->exp_filter_data;
591 struct filter_mod_data *found = NULL, *fmd_new = NULL;
593 OBD_SLAB_ALLOC_PTR_GFP(fmd_new, ll_fmd_cachep, CFS_ALLOC_IO);
595 cfs_spin_lock(&fed->fed_lock);
596 found = filter_fmd_find_nolock(&exp->exp_obd->u.filter,fed,objid,group);
599 cfs_list_add_tail(&fmd_new->fmd_list,
601 fmd_new->fmd_id = objid;
602 fmd_new->fmd_gr = group;
603 fmd_new->fmd_refcount++; /* list reference */
605 fed->fed_mod_count++;
607 OBD_SLAB_FREE(fmd_new, ll_fmd_cachep, sizeof(*fmd_new));
611 found->fmd_refcount++; /* caller reference */
612 found->fmd_expire = jiffies +
613 exp->exp_obd->u.filter.fo_fmd_max_age;
616 cfs_spin_unlock(&fed->fed_lock);
622 /* drop fmd list reference so it will disappear when last reference is put.
623 * This isn't so critical because it would in fact only affect the one client
624 * that is doing the unlink and at worst we have an stale entry referencing
625 * an object that should never be used again. */
626 static void filter_fmd_drop(struct obd_export *exp, obd_id objid, obd_gr group)
628 struct filter_mod_data *found = NULL;
630 cfs_spin_lock(&exp->exp_filter_data.fed_lock);
631 found = filter_fmd_find_nolock(&exp->exp_filter_data, objid, group);
633 cfs_list_del_init(&found->fmd_list);
634 filter_fmd_put_nolock(&exp->exp_filter_data, found);
636 cfs_spin_unlock(&exp->exp_filter_data.fed_lock);
639 #define filter_fmd_drop(exp, objid, group)
642 /* remove all entries from fmd list */
643 static void filter_fmd_cleanup(struct obd_export *exp)
645 struct filter_export_data *fed = &exp->exp_filter_data;
646 struct filter_mod_data *fmd = NULL, *tmp;
648 cfs_spin_lock(&fed->fed_lock);
649 cfs_list_for_each_entry_safe(fmd, tmp, &fed->fed_mod_list, fmd_list) {
650 cfs_list_del_init(&fmd->fmd_list);
651 filter_fmd_put_nolock(fed, fmd);
653 cfs_spin_unlock(&fed->fed_lock);
656 static int filter_init_export(struct obd_export *exp)
658 cfs_spin_lock_init(&exp->exp_filter_data.fed_lock);
659 CFS_INIT_LIST_HEAD(&exp->exp_filter_data.fed_mod_list);
661 cfs_spin_lock(&exp->exp_lock);
662 exp->exp_connecting = 1;
663 cfs_spin_unlock(&exp->exp_lock);
665 return ldlm_init_export(exp);
668 static int filter_free_server_data(struct filter_obd *filter)
670 OBD_FREE_PTR(filter->fo_fsd);
671 filter->fo_fsd = NULL;
672 OBD_FREE(filter->fo_last_rcvd_slots, LR_MAX_CLIENTS / 8);
673 filter->fo_last_rcvd_slots = NULL;
677 /* assumes caller is already in kernel ctxt */
678 int filter_update_server_data(struct obd_device *obd, struct file *filp,
679 struct lr_server_data *fsd)
685 CDEBUG(D_INODE, "server uuid : %s\n", fsd->lsd_uuid);
686 CDEBUG(D_INODE, "server last_rcvd : "LPU64"\n",
687 le64_to_cpu(fsd->lsd_last_transno));
688 CDEBUG(D_INODE, "server last_mount: "LPU64"\n",
689 le64_to_cpu(fsd->lsd_mount_count));
691 rc = fsfilt_write_record(obd, filp, fsd, sizeof(*fsd), &off, 0);
693 CERROR("error writing lr_server_data: rc = %d\n", rc);
698 int filter_update_last_objid(struct obd_device *obd, obd_gr group,
701 struct filter_obd *filter = &obd->u.filter;
707 if (filter->fo_last_objid_files[group] == NULL) {
708 CERROR("Object group "LPU64" not fully setup; not updating "
709 "last_objid\n", group);
713 CDEBUG(D_INODE, "%s: server last_objid for group "LPU64": "LPU64"\n",
714 obd->obd_name, group, filter->fo_last_objids[group]);
716 tmp = cpu_to_le64(filter->fo_last_objids[group]);
717 rc = fsfilt_write_record(obd, filter->fo_last_objid_files[group],
718 &tmp, sizeof(tmp), &off, force_sync);
720 CERROR("error writing group "LPU64" last objid: rc = %d\n",
724 extern int ost_handle(struct ptlrpc_request *req);
725 /* assumes caller has already in kernel ctxt */
726 static int filter_init_server_data(struct obd_device *obd, struct file * filp)
728 struct filter_obd *filter = &obd->u.filter;
729 struct lr_server_data *fsd;
730 struct lsd_client_data *lcd = NULL;
731 struct inode *inode = filp->f_dentry->d_inode;
732 unsigned long last_rcvd_size = i_size_read(inode);
739 /* ensure padding in the struct is the correct size */
740 CLASSERT (offsetof(struct lr_server_data, lsd_padding) +
741 sizeof(fsd->lsd_padding) == LR_SERVER_SIZE);
742 CLASSERT (offsetof(struct lsd_client_data, lcd_padding) +
743 sizeof(lcd->lcd_padding) == LR_CLIENT_SIZE);
745 OBD_ALLOC(fsd, sizeof(*fsd));
748 filter->fo_fsd = fsd;
750 OBD_ALLOC(filter->fo_last_rcvd_slots, LR_MAX_CLIENTS / 8);
751 if (filter->fo_last_rcvd_slots == NULL) {
752 OBD_FREE(fsd, sizeof(*fsd));
756 if (last_rcvd_size == 0) {
757 LCONSOLE_WARN("%s: new disk, initializing\n", obd->obd_name);
759 memcpy(fsd->lsd_uuid, obd->obd_uuid.uuid,sizeof(fsd->lsd_uuid));
760 fsd->lsd_last_transno = 0;
761 mount_count = fsd->lsd_mount_count = 0;
762 fsd->lsd_server_size = cpu_to_le32(LR_SERVER_SIZE);
763 fsd->lsd_client_start = cpu_to_le32(LR_CLIENT_START);
764 fsd->lsd_client_size = cpu_to_le16(LR_CLIENT_SIZE);
765 fsd->lsd_subdir_count = cpu_to_le16(FILTER_SUBDIR_COUNT);
766 filter->fo_subdir_count = FILTER_SUBDIR_COUNT;
767 /* OBD_COMPAT_OST is set in filter_connect_internal when the
768 * MDS first connects and assigns the OST index number. */
769 fsd->lsd_feature_incompat = cpu_to_le32(OBD_INCOMPAT_COMMON_LR|
772 rc = fsfilt_read_record(obd, filp, fsd, sizeof(*fsd), &off);
774 CDEBUG(D_INODE,"OBD filter: error reading %s: rc %d\n",
778 if (strcmp(fsd->lsd_uuid, obd->obd_uuid.uuid) != 0) {
779 LCONSOLE_ERROR_MSG(0x134, "Trying to start OBD %s "
780 "using the wrong disk %s. Were the "
781 "/dev/ assignments rearranged?\n",
782 obd->obd_uuid.uuid, fsd->lsd_uuid);
783 GOTO(err_fsd, rc = -EINVAL);
785 mount_count = le64_to_cpu(fsd->lsd_mount_count);
786 filter->fo_subdir_count = le16_to_cpu(fsd->lsd_subdir_count);
788 /* Assume old last_rcvd format unless I_C_LR is set */
789 if (!(fsd->lsd_feature_incompat &
790 cpu_to_le32(OBD_INCOMPAT_COMMON_LR)))
791 fsd->lsd_last_transno = fsd->lsd_compat14;
793 /* OBD_COMPAT_OST is set in filter_connect_internal when the
794 * MDS first connects and assigns the OST index number. */
795 fsd->lsd_feature_incompat |= cpu_to_le32(OBD_INCOMPAT_COMMON_LR|
799 if (fsd->lsd_feature_incompat & ~cpu_to_le32(FILTER_INCOMPAT_SUPP)) {
800 CERROR("%s: unsupported incompat filesystem feature(s) %x\n",
801 obd->obd_name, le32_to_cpu(fsd->lsd_feature_incompat) &
802 ~FILTER_INCOMPAT_SUPP);
803 GOTO(err_fsd, rc = -EINVAL);
805 if (fsd->lsd_feature_rocompat & ~cpu_to_le32(FILTER_ROCOMPAT_SUPP)) {
806 CERROR("%s: unsupported read-only filesystem feature(s) %x\n",
807 obd->obd_name, le32_to_cpu(fsd->lsd_feature_rocompat) &
808 ~FILTER_ROCOMPAT_SUPP);
809 /* Do something like remount filesystem read-only */
810 GOTO(err_fsd, rc = -EINVAL);
813 start_epoch = le32_to_cpu(fsd->lsd_start_epoch);
815 CDEBUG(D_INODE, "%s: server start_epoch : %#x\n",
816 obd->obd_name, start_epoch);
817 CDEBUG(D_INODE, "%s: server last_transno : "LPX64"\n",
818 obd->obd_name, le64_to_cpu(fsd->lsd_last_transno));
819 CDEBUG(D_INODE, "%s: server mount_count: "LPU64"\n",
820 obd->obd_name, mount_count + 1);
821 CDEBUG(D_INODE, "%s: server data size: %u\n",
822 obd->obd_name, le32_to_cpu(fsd->lsd_server_size));
823 CDEBUG(D_INODE, "%s: per-client data start: %u\n",
824 obd->obd_name, le32_to_cpu(fsd->lsd_client_start));
825 CDEBUG(D_INODE, "%s: per-client data size: %u\n",
826 obd->obd_name, le32_to_cpu(fsd->lsd_client_size));
827 CDEBUG(D_INODE, "%s: server subdir_count: %u\n",
828 obd->obd_name, le16_to_cpu(fsd->lsd_subdir_count));
829 CDEBUG(D_INODE, "%s: last_rcvd clients: %lu\n", obd->obd_name,
830 last_rcvd_size <= le32_to_cpu(fsd->lsd_client_start) ? 0 :
831 (last_rcvd_size - le32_to_cpu(fsd->lsd_client_start)) /
832 le16_to_cpu(fsd->lsd_client_size));
834 if (!obd->obd_replayable) {
835 CWARN("%s: recovery support OFF\n", obd->obd_name);
839 for (cl_idx = 0, off = le32_to_cpu(fsd->lsd_client_start);
840 off < last_rcvd_size; cl_idx++) {
842 struct obd_export *exp;
843 struct filter_export_data *fed;
848 GOTO(err_client, rc = -ENOMEM);
851 /* Don't assume off is incremented properly by
852 * fsfilt_read_record(), in case sizeof(*lcd)
853 * isn't the same as fsd->lsd_client_size. */
854 off = le32_to_cpu(fsd->lsd_client_start) +
855 cl_idx * le16_to_cpu(fsd->lsd_client_size);
856 rc = fsfilt_read_record(obd, filp, lcd, sizeof(*lcd), &off);
858 CERROR("error reading FILT %s idx %d off %llu: rc %d\n",
859 LAST_RCVD, cl_idx, off, rc);
860 break; /* read error shouldn't cause startup to fail */
863 if (lcd->lcd_uuid[0] == '\0') {
864 CDEBUG(D_INFO, "skipping zeroed client at offset %d\n",
869 check_lcd(obd->obd_name, cl_idx, lcd);
871 last_rcvd = le64_to_cpu(lcd->lcd_last_transno);
873 /* These exports are cleaned up by filter_disconnect(), so they
874 * need to be set up like real exports as filter_connect() does.
876 exp = class_new_export(obd, (struct obd_uuid *)lcd->lcd_uuid);
878 CDEBUG(D_HA, "RCVRNG CLIENT uuid: %s idx: %d lr: "LPU64
879 " srv lr: "LPU64"\n", lcd->lcd_uuid, cl_idx,
880 last_rcvd, le64_to_cpu(fsd->lsd_last_transno));
882 if (PTR_ERR(exp) == -EALREADY) {
883 /* export already exists, zero out this one */
884 CERROR("Zeroing out duplicate export due to "
886 lcd->lcd_uuid[0] = '\0';
888 GOTO(err_client, rc = PTR_ERR(exp));
891 fed = &exp->exp_filter_data;
893 fed->fed_group = 0; /* will be assigned at connect */
894 filter_export_stats_init(obd, exp, NULL);
895 rc = filter_client_add(obd, exp, cl_idx);
896 /* can't fail for existing client */
897 LASSERTF(rc == 0, "rc = %d\n", rc);
899 /* VBR: set export last committed */
900 exp->exp_last_committed = last_rcvd;
901 cfs_spin_lock(&exp->exp_lock);
902 exp->exp_connecting = 0;
903 exp->exp_in_recovery = 0;
904 cfs_spin_unlock(&exp->exp_lock);
905 cfs_spin_lock_bh(&obd->obd_processing_task_lock);
906 obd->obd_max_recoverable_clients++;
907 cfs_spin_unlock_bh(&obd->obd_processing_task_lock);
909 class_export_put(exp);
912 /* Need to check last_rcvd even for duplicated exports. */
913 CDEBUG(D_OTHER, "client at idx %d has last_rcvd = "LPU64"\n",
916 if (last_rcvd > le64_to_cpu(fsd->lsd_last_transno))
917 fsd->lsd_last_transno = cpu_to_le64(last_rcvd);
923 obd->obd_last_committed = le64_to_cpu(fsd->lsd_last_transno);
925 filter->fo_mount_count = mount_count + 1;
926 fsd->lsd_mount_count = cpu_to_le64(filter->fo_mount_count);
928 /* save it, so mount count and last_transno is current */
929 rc = filter_update_server_data(obd, filp, filter->fo_fsd);
931 GOTO(err_client, rc);
936 class_disconnect_exports(obd);
938 filter_free_server_data(filter);
942 static int filter_cleanup_groups(struct obd_device *obd)
944 struct filter_obd *filter = &obd->u.filter;
946 struct dentry *dentry;
950 if (filter->fo_dentry_O_groups != NULL) {
951 for (i = 0; i < filter->fo_group_count; i++) {
952 dentry = filter->fo_dentry_O_groups[i];
956 OBD_FREE(filter->fo_dentry_O_groups,
957 filter->fo_group_count *
958 sizeof(*filter->fo_dentry_O_groups));
959 filter->fo_dentry_O_groups = NULL;
961 if (filter->fo_last_objid_files != NULL) {
962 for (i = 0; i < filter->fo_group_count; i++) {
963 filp = filter->fo_last_objid_files[i];
967 OBD_FREE(filter->fo_last_objid_files,
968 filter->fo_group_count *
969 sizeof(*filter->fo_last_objid_files));
970 filter->fo_last_objid_files = NULL;
972 if (filter->fo_dentry_O_sub != NULL) {
973 for (i = 0; i < filter->fo_group_count; i++) {
974 for (j = 0; j < filter->fo_subdir_count; j++) {
975 dentry = filter->fo_dentry_O_sub[i].dentry[j];
980 OBD_FREE(filter->fo_dentry_O_sub,
981 filter->fo_group_count *
982 sizeof(*filter->fo_dentry_O_sub));
983 filter->fo_dentry_O_sub = NULL;
985 if (filter->fo_last_objids != NULL) {
986 OBD_FREE(filter->fo_last_objids,
987 filter->fo_group_count *
988 sizeof(*filter->fo_last_objids));
989 filter->fo_last_objids = NULL;
991 if (filter->fo_dentry_O != NULL) {
992 f_dput(filter->fo_dentry_O);
993 filter->fo_dentry_O = NULL;
998 static int filter_update_last_group(struct obd_device *obd, int group)
1000 struct filter_obd *filter = &obd->u.filter;
1001 struct file *filp = NULL;
1002 int last_group = 0, rc;
1006 if (group <= filter->fo_committed_group)
1009 filp = filp_open("LAST_GROUP", O_RDWR, 0700);
1013 CERROR("cannot open LAST_GROUP: rc = %d\n", rc);
1017 rc = fsfilt_read_record(obd, filp, &last_group, sizeof(__u32), &off);
1019 CDEBUG(D_INODE, "error reading LAST_GROUP: rc %d\n",rc);
1023 CDEBUG(D_INODE, "%s: previous %d, new %d\n",
1024 obd->obd_name, last_group, group);
1028 /* must be sync: bXXXX */
1029 rc = fsfilt_write_record(obd, filp, &last_group, sizeof(__u32), &off, 1);
1031 CDEBUG(D_INODE, "error updating LAST_GROUP: rc %d\n", rc);
1035 filter->fo_committed_group = group;
1038 filp_close(filp, 0);
1042 static int filter_read_group_internal(struct obd_device *obd, int group,
1045 struct filter_obd *filter = &obd->u.filter;
1046 __u64 *new_objids = NULL;
1047 struct filter_subdirs *new_subdirs = NULL, *tmp_subdirs = NULL;
1048 struct dentry **new_groups = NULL;
1049 struct file **new_files = NULL;
1050 struct dentry *dentry;
1052 int old_count = filter->fo_group_count, rc, stage = 0, i;
1056 int len = group + 1;
1058 snprintf(name, 24, "%d", group);
1062 dentry = ll_lookup_one_len(name, filter->fo_dentry_O,
1064 if (IS_ERR(dentry)) {
1065 CERROR("Cannot lookup expected object group %d: %ld\n",
1066 group, PTR_ERR(dentry));
1067 RETURN(PTR_ERR(dentry));
1070 dentry = simple_mkdir(filter->fo_dentry_O, filter->fo_vfsmnt,
1072 if (IS_ERR(dentry)) {
1073 CERROR("cannot lookup/create O/%s: rc = %ld\n", name,
1075 RETURN(PTR_ERR(dentry));
1080 snprintf(name, 24, "O/%d/LAST_ID", group);
1082 filp = filp_open(name, O_CREAT | O_RDWR, 0700);
1084 CERROR("cannot create %s: rc = %ld\n", name, PTR_ERR(filp));
1085 GOTO(cleanup, rc = PTR_ERR(filp));
1089 rc = fsfilt_read_record(obd, filp, &last_objid, sizeof(__u64), &off);
1091 CDEBUG(D_INODE, "error reading %s: rc %d\n", name, rc);
1095 if (filter->fo_subdir_count && filter_group_is_mds(group)) {
1096 OBD_ALLOC(tmp_subdirs, sizeof(*tmp_subdirs));
1097 if (tmp_subdirs == NULL)
1098 GOTO(cleanup, rc = -ENOMEM);
1101 for (i = 0; i < filter->fo_subdir_count; i++) {
1103 snprintf(dir, sizeof(dir), "d%u", i);
1105 tmp_subdirs->dentry[i] = simple_mkdir(dentry,
1108 if (IS_ERR(tmp_subdirs->dentry[i])) {
1109 rc = PTR_ERR(tmp_subdirs->dentry[i]);
1110 CERROR("can't lookup/create O/%d/%s: rc = %d\n",
1115 CDEBUG(D_INODE, "got/created O/%d/%s: %p\n", group, dir,
1116 tmp_subdirs->dentry[i]);
1120 /* 'group' is an index; we need an array of length 'group + 1' */
1121 if (group + 1 > old_count) {
1122 OBD_ALLOC(new_objids, len * sizeof(*new_objids));
1123 OBD_ALLOC(new_subdirs, len * sizeof(*new_subdirs));
1124 OBD_ALLOC(new_groups, len * sizeof(*new_groups));
1125 OBD_ALLOC(new_files, len * sizeof(*new_files));
1127 if (new_objids == NULL || new_subdirs == NULL ||
1128 new_groups == NULL || new_files == NULL)
1129 GOTO(cleanup, rc = -ENOMEM);
1132 memcpy(new_objids, filter->fo_last_objids,
1133 old_count * sizeof(*new_objids));
1134 memcpy(new_subdirs, filter->fo_dentry_O_sub,
1135 old_count * sizeof(*new_subdirs));
1136 memcpy(new_groups, filter->fo_dentry_O_groups,
1137 old_count * sizeof(*new_groups));
1138 memcpy(new_files, filter->fo_last_objid_files,
1139 old_count * sizeof(*new_files));
1141 OBD_FREE(filter->fo_last_objids,
1142 old_count * sizeof(*new_objids));
1143 OBD_FREE(filter->fo_dentry_O_sub,
1144 old_count * sizeof(*new_subdirs));
1145 OBD_FREE(filter->fo_dentry_O_groups,
1146 old_count * sizeof(*new_groups));
1147 OBD_FREE(filter->fo_last_objid_files,
1148 old_count * sizeof(*new_files));
1150 filter->fo_last_objids = new_objids;
1151 filter->fo_dentry_O_sub = new_subdirs;
1152 filter->fo_dentry_O_groups = new_groups;
1153 filter->fo_last_objid_files = new_files;
1154 filter->fo_group_count = len;
1157 filter->fo_dentry_O_groups[group] = dentry;
1158 filter->fo_last_objid_files[group] = filp;
1159 if (filter->fo_subdir_count && filter_group_is_mds(group)) {
1160 filter->fo_dentry_O_sub[group] = *tmp_subdirs;
1161 OBD_FREE(tmp_subdirs, sizeof(*tmp_subdirs));
1164 filter_update_last_group(obd, group);
1166 if (i_size_read(filp->f_dentry->d_inode) == 0) {
1167 filter->fo_last_objids[group] = FILTER_INIT_OBJID;
1168 rc = filter_update_last_objid(obd, group, 1);
1172 filter->fo_last_objids[group] = le64_to_cpu(last_objid);
1173 CDEBUG(D_INODE, "%s: server last_objid group %d: "LPU64"\n",
1174 obd->obd_name, group, last_objid);
1179 if (new_objids != NULL)
1180 OBD_FREE(new_objids, len * sizeof(*new_objids));
1181 if (new_subdirs != NULL)
1182 OBD_FREE(new_subdirs, len * sizeof(*new_subdirs));
1183 if (new_groups != NULL)
1184 OBD_FREE(new_groups, len * sizeof(*new_groups));
1185 if (new_files != NULL)
1186 OBD_FREE(new_files, len * sizeof(*new_files));
1188 if (filter->fo_subdir_count && filter_group_is_mds(group)) {
1189 for (i = 0; i < filter->fo_subdir_count; i++) {
1190 if (tmp_subdirs->dentry[i] != NULL)
1191 dput(tmp_subdirs->dentry[i]);
1193 OBD_FREE(tmp_subdirs, sizeof(*tmp_subdirs));
1196 filp_close(filp, 0);
1203 static int filter_read_groups(struct obd_device *obd, int last_group,
1206 struct filter_obd *filter = &obd->u.filter;
1207 int old_count, group, rc = 0;
1209 cfs_down(&filter->fo_init_lock);
1210 old_count = filter->fo_group_count;
1211 for (group = old_count; group <= last_group; group++) {
1212 rc = filter_read_group_internal(obd, group, create);
1216 cfs_up(&filter->fo_init_lock);
1220 /* FIXME: object groups */
1221 static int filter_prep_groups(struct obd_device *obd)
1223 struct filter_obd *filter = &obd->u.filter;
1224 struct dentry *O_dentry;
1226 int last_group, rc = 0, cleanup_phase = 0;
1230 O_dentry = simple_mkdir(current->fs->pwd, filter->fo_vfsmnt,
1232 CDEBUG(D_INODE, "got/created O: %p\n", O_dentry);
1233 if (IS_ERR(O_dentry)) {
1234 rc = PTR_ERR(O_dentry);
1235 CERROR("cannot open/create O: rc = %d\n", rc);
1238 filter->fo_dentry_O = O_dentry;
1239 cleanup_phase = 1; /* O_dentry */
1241 /* we have to initialize all groups before first connections from
1242 * clients because they may send create/destroy for any group -bzzz */
1243 filp = filp_open("LAST_GROUP", O_CREAT | O_RDWR, 0700);
1245 CERROR("cannot create LAST_GROUP: rc = %ld\n", PTR_ERR(filp));
1246 GOTO(cleanup, rc = PTR_ERR(filp));
1248 cleanup_phase = 2; /* filp */
1250 rc = fsfilt_read_record(obd, filp, &last_group, sizeof(__u32), &off);
1252 CDEBUG(D_INODE, "error reading LAST_GROUP: rc %d\n", rc);
1257 last_group = FILTER_GROUP_MDS0;
1259 CWARN("%s: initialize groups [%d,%d]\n", obd->obd_name,
1260 FILTER_GROUP_MDS0, last_group);
1261 filter->fo_committed_group = last_group;
1262 rc = filter_read_groups(obd, last_group, 1);
1266 filp_close(filp, 0);
1270 switch (cleanup_phase) {
1272 filp_close(filp, 0);
1274 filter_cleanup_groups(obd);
1275 f_dput(filter->fo_dentry_O);
1276 filter->fo_dentry_O = NULL;
1284 /* setup the object store with correct subdirectories */
1285 static int filter_prep(struct obd_device *obd)
1287 struct lvfs_run_ctxt saved;
1288 struct filter_obd *filter = &obd->u.filter;
1290 struct inode *inode;
1294 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
1295 file = filp_open(LAST_RCVD, O_RDWR | O_CREAT | O_LARGEFILE, 0700);
1296 if (!file || IS_ERR(file)) {
1298 CERROR("OBD filter: cannot open/create %s: rc = %d\n",
1302 filter->fo_rcvd_filp = file;
1303 if (!S_ISREG(file->f_dentry->d_inode->i_mode)) {
1304 CERROR("%s is not a regular file!: mode = %o\n", LAST_RCVD,
1305 file->f_dentry->d_inode->i_mode);
1306 GOTO(err_filp, rc = -ENOENT);
1309 inode = file->f_dentry->d_parent->d_inode;
1310 /* We use i_op->unlink directly in filter_vfs_unlink() */
1311 if (!inode->i_op || !inode->i_op->create || !inode->i_op->unlink) {
1312 CERROR("%s: filesystem does not support create/unlink ops\n",
1314 GOTO(err_filp, rc = -EOPNOTSUPP);
1317 /** lu_target has very limited use in filter now */
1318 lut_init(NULL, &filter->fo_lut, obd, NULL);
1320 rc = filter_init_server_data(obd, file);
1322 CERROR("cannot read %s: rc = %d\n", LAST_RCVD, rc);
1326 target_recovery_init(&filter->fo_lut, ost_handle);
1328 /* open and create health check io file*/
1329 file = filp_open(HEALTH_CHECK, O_RDWR | O_CREAT, 0644);
1332 CERROR("OBD filter: cannot open/create %s rc = %d\n",
1334 GOTO(err_server_data, rc);
1336 filter->fo_obt.obt_health_check_filp = file;
1337 if (!S_ISREG(file->f_dentry->d_inode->i_mode)) {
1338 CERROR("%s is not a regular file!: mode = %o\n", HEALTH_CHECK,
1339 file->f_dentry->d_inode->i_mode);
1340 GOTO(err_health_check, rc = -ENOENT);
1342 rc = lvfs_check_io_health(obd, file);
1344 GOTO(err_health_check, rc);
1346 rc = filter_prep_groups(obd);
1348 GOTO(err_health_check, rc);
1350 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
1355 if (filp_close(filter->fo_obt.obt_health_check_filp, 0))
1356 CERROR("can't close %s after error\n", HEALTH_CHECK);
1357 filter->fo_obt.obt_health_check_filp = NULL;
1359 target_recovery_fini(obd);
1360 filter_free_server_data(filter);
1362 if (filp_close(filter->fo_rcvd_filp, 0))
1363 CERROR("can't close %s after error\n", LAST_RCVD);
1364 filter->fo_rcvd_filp = NULL;
1368 /* cleanup the filter: write last used object id to status file */
1369 static void filter_post(struct obd_device *obd)
1371 struct lvfs_run_ctxt saved;
1372 struct filter_obd *filter = &obd->u.filter;
1375 /* XXX: filter_update_lastobjid used to call fsync_dev. It might be
1376 * best to start a transaction with h_sync, because we removed this
1379 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
1380 rc = filter_update_server_data(obd, filter->fo_rcvd_filp,
1383 CERROR("error writing server data: rc = %d\n", rc);
1385 for (i = 0; i < filter->fo_group_count; i++) {
1386 rc = filter_update_last_objid(obd, i,
1387 (i == filter->fo_group_count - 1));
1389 CERROR("error writing group %d lastobjid: rc = %d\n",
1393 rc = filp_close(filter->fo_rcvd_filp, 0);
1394 filter->fo_rcvd_filp = NULL;
1396 CERROR("error closing %s: rc = %d\n", LAST_RCVD, rc);
1398 rc = filp_close(filter->fo_obt.obt_health_check_filp, 0);
1399 filter->fo_obt.obt_health_check_filp = NULL;
1401 CERROR("error closing %s: rc = %d\n", HEALTH_CHECK, rc);
1403 filter_cleanup_groups(obd);
1404 filter_free_server_data(filter);
1405 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
1407 filter_free_capa_keys(filter);
1408 cleanup_capa_hash(filter->fo_capa_hash);
1411 static void filter_set_last_id(struct filter_obd *filter,
1412 obd_id id, obd_gr group)
1414 LASSERT(filter->fo_fsd != NULL);
1415 LASSERT(group <= filter->fo_group_count);
1417 cfs_spin_lock(&filter->fo_objidlock);
1418 filter->fo_last_objids[group] = id;
1419 cfs_spin_unlock(&filter->fo_objidlock);
1422 obd_id filter_last_id(struct filter_obd *filter, obd_gr group)
1425 LASSERT(filter->fo_fsd != NULL);
1426 LASSERT(group <= filter->fo_group_count);
1428 /* FIXME: object groups */
1429 cfs_spin_lock(&filter->fo_objidlock);
1430 id = filter->fo_last_objids[group];
1431 cfs_spin_unlock(&filter->fo_objidlock);
1435 static int filter_lock_dentry(struct obd_device *obd, struct dentry *dparent)
1437 LOCK_INODE_MUTEX_PARENT(dparent->d_inode);
1441 /* We never dget the object parent, so DON'T dput it either */
1442 struct dentry *filter_parent(struct obd_device *obd, obd_gr group, obd_id objid)
1444 struct filter_obd *filter = &obd->u.filter;
1445 struct filter_subdirs *subdirs;
1446 LASSERT(group < filter->fo_group_count); /* FIXME: object groups */
1448 if (!filter_group_is_mds(group) || filter->fo_subdir_count == 0)
1449 return filter->fo_dentry_O_groups[group];
1451 subdirs = &filter->fo_dentry_O_sub[group];
1452 return subdirs->dentry[objid & (filter->fo_subdir_count - 1)];
1455 /* We never dget the object parent, so DON'T dput it either */
1456 struct dentry *filter_parent_lock(struct obd_device *obd, obd_gr group,
1459 unsigned long now = jiffies;
1460 struct dentry *dparent = filter_parent(obd, group, objid);
1463 if (IS_ERR(dparent))
1465 if (dparent == NULL)
1466 return ERR_PTR(-ENOENT);
1468 rc = filter_lock_dentry(obd, dparent);
1469 fsfilt_check_slow(obd, now, "parent lock");
1470 return rc ? ERR_PTR(rc) : dparent;
1473 /* We never dget the object parent, so DON'T dput it either */
1474 static void filter_parent_unlock(struct dentry *dparent)
1476 UNLOCK_INODE_MUTEX(dparent->d_inode);
1479 /* How to get files, dentries, inodes from object id's.
1481 * If dir_dentry is passed, the caller has already locked the parent
1482 * appropriately for this operation (normally a write lock). If
1483 * dir_dentry is NULL, we do a read lock while we do the lookup to
1484 * avoid races with create/destroy and such changing the directory
1485 * internal to the filesystem code. */
1486 struct dentry *filter_fid2dentry(struct obd_device *obd,
1487 struct dentry *dir_dentry,
1488 obd_gr group, obd_id id)
1490 struct dentry *dparent = dir_dentry;
1491 struct dentry *dchild;
1496 if (OBD_FAIL_CHECK(OBD_FAIL_OST_ENOENT) &&
1497 obd->u.filter.fo_destroys_in_progress == 0) {
1498 /* don't fail lookups for orphan recovery, it causes
1499 * later LBUGs when objects still exist during precreate */
1500 CDEBUG(D_INFO, "*** obd_fail_loc=%x ***\n",OBD_FAIL_OST_ENOENT);
1501 RETURN(ERR_PTR(-ENOENT));
1504 CERROR("fatal: invalid object id 0\n");
1505 RETURN(ERR_PTR(-ESTALE));
1508 len = sprintf(name, LPU64, id);
1509 if (dir_dentry == NULL) {
1510 dparent = filter_parent_lock(obd, group, id);
1511 if (IS_ERR(dparent)) {
1512 CERROR("%s: error getting object "LPU64":"LPU64
1513 " parent: rc %ld\n", obd->obd_name,
1514 id, group, PTR_ERR(dparent));
1518 CDEBUG(D_INODE, "looking up object O/%.*s/%s\n",
1519 dparent->d_name.len, dparent->d_name.name, name);
1520 dchild = /*ll_*/lookup_one_len(name, dparent, len);
1521 if (dir_dentry == NULL)
1522 filter_parent_unlock(dparent);
1523 if (IS_ERR(dchild)) {
1524 CERROR("%s: child lookup error %ld\n", obd->obd_name,
1529 if (dchild->d_inode != NULL && is_bad_inode(dchild->d_inode)) {
1530 CERROR("%s: got bad object "LPU64" inode %lu\n",
1531 obd->obd_name, id, dchild->d_inode->i_ino);
1533 RETURN(ERR_PTR(-ENOENT));
1536 CDEBUG(D_INODE, "got child objid %s: %p, count = %d\n",
1537 name, dchild, atomic_read(&dchild->d_count));
1539 LASSERT(atomic_read(&dchild->d_count) > 0);
1544 static int filter_prepare_destroy(struct obd_device *obd, obd_id objid,
1545 obd_id group, struct lustre_handle *lockh)
1547 int flags = LDLM_AST_DISCARD_DATA, rc;
1548 struct ldlm_res_id res_id;
1549 ldlm_policy_data_t policy = { .l_extent = { 0, OBD_OBJECT_EOF } };
1552 osc_build_res_name(objid, group, &res_id);
1553 /* Tell the clients that the object is gone now and that they should
1554 * throw away any cached pages. */
1555 rc = ldlm_cli_enqueue_local(obd->obd_namespace, &res_id, LDLM_EXTENT,
1556 &policy, LCK_PW, &flags, ldlm_blocking_ast,
1557 ldlm_completion_ast, NULL, NULL, 0, NULL,
1564 static void filter_fini_destroy(struct obd_device *obd,
1565 struct lustre_handle *lockh)
1568 ldlm_lock_decref(lockh, LCK_PW);
1571 /* This is vfs_unlink() without down(i_sem). If we call regular vfs_unlink()
1572 * we have 2.6 lock ordering issues with filter_commitrw_write() as it takes
1573 * i_sem before starting a handle, while filter_destroy() + vfs_unlink do the
1574 * reverse. Caller must take i_sem before starting the transaction and we
1575 * drop it here before the inode is removed from the dentry. bug 4180/6984 */
1576 int filter_vfs_unlink(struct inode *dir, struct dentry *dentry,
1577 struct vfsmount *mnt)
1582 /* don't need dir->i_zombie for 2.4, it is for rename/unlink of dir
1583 * itself we already hold dir->i_mutex for child create/unlink ops */
1584 LASSERT(dentry->d_inode != NULL);
1585 LASSERT(TRYLOCK_INODE_MUTEX(dir) == 0);
1586 LASSERT(TRYLOCK_INODE_MUTEX(dentry->d_inode) == 0);
1590 if (/*!dentry->d_inode ||*/dentry->d_parent->d_inode != dir)
1591 GOTO(out, rc = -ENOENT);
1593 rc = ll_permission(dir, MAY_WRITE | MAY_EXEC, NULL);
1598 GOTO(out, rc = -EPERM);
1600 /* check_sticky() */
1601 if ((dentry->d_inode->i_uid != current->fsuid &&
1602 !cfs_capable(CFS_CAP_FOWNER)) || IS_APPEND(dentry->d_inode) ||
1603 IS_IMMUTABLE(dentry->d_inode))
1604 GOTO(out, rc = -EPERM);
1606 /* NOTE: This might need to go outside i_mutex, though it isn't clear if
1607 * that was done because of journal_start (which is already done
1608 * here) or some other ordering issue. */
1611 rc = ll_security_inode_unlink(dir, dentry, mnt);
1615 rc = dir->i_op->unlink(dir, dentry);
1617 /* need to drop i_mutex before we lose inode reference */
1618 UNLOCK_INODE_MUTEX(dentry->d_inode);
1625 /* Caller must hold LCK_PW on parent and push us into kernel context.
1626 * Caller must hold child i_mutex, we drop it always.
1627 * Caller is also required to ensure that dchild->d_inode exists. */
1628 static int filter_destroy_internal(struct obd_device *obd, obd_id objid,
1629 obd_gr group, struct dentry *dparent,
1630 struct dentry *dchild)
1632 struct inode *inode = dchild->d_inode;
1633 struct filter_obd *filter = &obd->u.filter;
1636 if (inode->i_nlink != 1 || atomic_read(&inode->i_count) != 1) {
1637 CERROR("destroying objid %.*s ino %lu nlink %lu count %d\n",
1638 dchild->d_name.len, dchild->d_name.name, inode->i_ino,
1639 (unsigned long)inode->i_nlink,
1640 atomic_read(&inode->i_count));
1643 rc = filter_vfs_unlink(dparent->d_inode, dchild, filter->fo_vfsmnt);
1645 CERROR("error unlinking objid %.*s: rc %d\n",
1646 dchild->d_name.len, dchild->d_name.name, rc);
1650 struct filter_intent_args {
1651 struct ldlm_lock **victim;
1656 static enum interval_iter filter_intent_cb(struct interval_node *n,
1659 struct ldlm_interval *node = (struct ldlm_interval *)n;
1660 struct filter_intent_args *arg = (struct filter_intent_args*)args;
1661 __u64 size = arg->size;
1662 struct ldlm_lock **v = arg->victim;
1663 struct ldlm_lock *lck;
1665 /* If the interval is lower than the current file size,
1667 if (interval_high(n) <= size)
1668 return INTERVAL_ITER_STOP;
1670 cfs_list_for_each_entry(lck, &node->li_group, l_sl_policy) {
1671 /* Don't send glimpse ASTs to liblustre clients.
1672 * They aren't listening for them, and they do
1673 * entirely synchronous I/O anyways. */
1674 if (lck->l_export == NULL ||
1675 lck->l_export->exp_libclient == 1)
1678 if (*arg->liblustre)
1679 *arg->liblustre = 0;
1682 *v = LDLM_LOCK_GET(lck);
1683 } else if ((*v)->l_policy_data.l_extent.start <
1684 lck->l_policy_data.l_extent.start) {
1685 LDLM_LOCK_RELEASE(*v);
1686 *v = LDLM_LOCK_GET(lck);
1689 /* the same policy group - every lock has the
1690 * same extent, so needn't do it any more */
1694 return INTERVAL_ITER_CONT;
1697 static int filter_intent_policy(struct ldlm_namespace *ns,
1698 struct ldlm_lock **lockp, void *req_cookie,
1699 ldlm_mode_t mode, int flags, void *data)
1701 CFS_LIST_HEAD(rpc_list);
1702 struct ptlrpc_request *req = req_cookie;
1703 struct ldlm_lock *lock = *lockp, *l = NULL;
1704 struct ldlm_resource *res = lock->l_resource;
1705 ldlm_processing_policy policy;
1706 struct ost_lvb *res_lvb, *reply_lvb;
1707 struct ldlm_reply *rep;
1709 int idx, rc, tmpflags = 0, only_liblustre = 1;
1710 struct ldlm_interval_tree *tree;
1711 struct filter_intent_args arg;
1712 __u32 repsize[3] = { [MSG_PTLRPC_BODY_OFF] = sizeof(struct ptlrpc_body),
1713 [DLM_LOCKREPLY_OFF] = sizeof(*rep),
1714 [DLM_REPLY_REC_OFF] = sizeof(*reply_lvb) };
1717 policy = ldlm_get_processing_policy(res);
1718 LASSERT(policy != NULL);
1719 LASSERT(req != NULL);
1721 rc = lustre_pack_reply(req, 3, repsize, NULL);
1723 RETURN(req->rq_status = rc);
1725 rep = lustre_msg_buf(req->rq_repmsg, DLM_LOCKREPLY_OFF, sizeof(*rep));
1726 LASSERT(rep != NULL);
1728 reply_lvb = lustre_msg_buf(req->rq_repmsg, DLM_REPLY_REC_OFF,
1729 sizeof(*reply_lvb));
1730 LASSERT(reply_lvb != NULL);
1732 //fixup_handle_for_resent_req(req, lock, &lockh);
1734 /* Call the extent policy function to see if our request can be
1735 * granted, or is blocked.
1736 * If the OST lock has LDLM_FL_HAS_INTENT set, it means a glimpse
1737 * lock, and should not be granted if the lock will be blocked.
1740 LASSERT(ns == res->lr_namespace);
1742 rc = policy(lock, &tmpflags, 0, &err, &rpc_list);
1743 check_res_locked(res);
1745 /* FIXME: we should change the policy function slightly, to not make
1746 * this list at all, since we just turn around and free it */
1747 while (!cfs_list_empty(&rpc_list)) {
1748 struct ldlm_lock *wlock =
1749 cfs_list_entry(rpc_list.next, struct ldlm_lock,
1751 LASSERT((lock->l_flags & LDLM_FL_AST_SENT) == 0);
1752 LASSERT(lock->l_flags & LDLM_FL_CP_REQD);
1753 lock->l_flags &= ~LDLM_FL_CP_REQD;
1754 cfs_list_del_init(&wlock->l_cp_ast);
1755 LDLM_LOCK_RELEASE(wlock);
1758 /* The lock met with no resistance; we're finished. */
1759 if (rc == LDLM_ITER_CONTINUE) {
1760 /* do not grant locks to the liblustre clients: they cannot
1761 * handle ASTs robustly. We need to do this while still
1762 * holding ns_lock to avoid the lock remaining on the res_link
1763 * list (and potentially being added to l_pending_list by an
1764 * AST) when we are going to drop this lock ASAP. */
1765 if (lock->l_export->exp_libclient ||
1766 OBD_FAIL_TIMEOUT(OBD_FAIL_LDLM_GLIMPSE, 2)) {
1767 ldlm_resource_unlink_lock(lock);
1768 err = ELDLM_LOCK_ABORTED;
1770 err = ELDLM_LOCK_REPLACED;
1776 /* Do not grant any lock, but instead send GL callbacks. The extent
1777 * policy nicely created a list of all PW locks for us. We will choose
1778 * the highest of those which are larger than the size in the LVB, if
1779 * any, and perform a glimpse callback. */
1780 res_lvb = res->lr_lvb_data;
1781 LASSERT(res_lvb != NULL);
1782 *reply_lvb = *res_lvb;
1785 * ->ns_lock guarantees that no new locks are granted, and,
1786 * therefore, that res->lr_lvb_data cannot increase beyond the
1787 * end of already granted lock. As a result, it is safe to
1788 * check against "stale" reply_lvb->lvb_size value without
1791 arg.size = reply_lvb->lvb_size;
1793 arg.liblustre = &only_liblustre;
1794 for (idx = 0; idx < LCK_MODE_NUM; idx++) {
1795 tree = &res->lr_itree[idx];
1796 if (tree->lit_mode == LCK_PR)
1799 interval_iterate_reverse(tree->lit_root,
1800 filter_intent_cb, &arg);
1804 /* There were no PW locks beyond the size in the LVB; finished. */
1806 if (only_liblustre) {
1807 /* If we discovered a liblustre client with a PW lock,
1808 * however, the LVB may be out of date! The LVB is
1809 * updated only on glimpse (which we don't do for
1810 * liblustre clients) and cancel (which the client
1811 * obviously has not yet done). So if it has written
1812 * data but kept the lock, the LVB is stale and needs
1813 * to be updated from disk.
1815 * Of course, this will all disappear when we switch to
1816 * taking liblustre locks on the OST. */
1817 ldlm_res_lvbo_update(res, NULL, 1);
1819 RETURN(ELDLM_LOCK_ABORTED);
1823 * This check is for lock taken in filter_prepare_destroy() that does
1824 * not have l_glimpse_ast set. So the logic is: if there is a lock
1825 * with no l_glimpse_ast set, this object is being destroyed already.
1827 * Hence, if you are grabbing DLM locks on the server, always set
1828 * non-NULL glimpse_ast (e.g., ldlm_request.c:ldlm_glimpse_ast()).
1830 if (l->l_glimpse_ast == NULL) {
1831 /* We are racing with unlink(); just return -ENOENT */
1832 rep->lock_policy_res1 = -ENOENT;
1836 LASSERTF(l->l_glimpse_ast != NULL, "l == %p", l);
1837 rc = l->l_glimpse_ast(l, NULL); /* this will update the LVB */
1838 /* Update the LVB from disk if the AST failed (this is a legal race) */
1840 * XXX nikita: situation when ldlm_server_glimpse_ast() failed before
1841 * sending ast is not handled. This can result in lost client writes.
1844 ldlm_res_lvbo_update(res, NULL, 1);
1847 *reply_lvb = *res_lvb;
1851 LDLM_LOCK_RELEASE(l);
1853 RETURN(ELDLM_LOCK_ABORTED);
1857 * per-obd_device iobuf pool.
1859 * To avoid memory deadlocks in low-memory setups, amount of dynamic
1860 * allocations in write-path has to be minimized (see bug 5137).
1862 * Pages, niobuf_local's and niobuf_remote's are pre-allocated and attached to
1863 * OST threads (see ost_thread_{init,done}()).
1865 * "iobuf's" used by filter cannot be attached to OST thread, however, because
1866 * at the OST layer there are only (potentially) multiple obd_device of type
1867 * unknown at the time of OST thread creation.
1869 * Instead array of iobuf's is attached to struct filter_obd (->fo_iobuf_pool
1870 * field). This array has size OST_MAX_THREADS, so that each OST thread uses
1871 * it's very own iobuf.
1875 * filter_kiobuf_pool_init()
1877 * filter_kiobuf_pool_done()
1879 * filter_iobuf_get()
1881 * operate on this array. They are "generic" in a sense that they don't depend
1882 * on actual type of iobuf's (the latter depending on Linux kernel version).
1886 * destroy pool created by filter_iobuf_pool_init
1888 static void filter_iobuf_pool_done(struct filter_obd *filter)
1890 struct filter_iobuf **pool;
1895 pool = filter->fo_iobuf_pool;
1897 for (i = 0; i < filter->fo_iobuf_count; ++ i) {
1898 if (pool[i] != NULL)
1899 filter_free_iobuf(pool[i]);
1901 OBD_FREE(pool, filter->fo_iobuf_count * sizeof pool[0]);
1902 filter->fo_iobuf_pool = NULL;
1907 static int filter_adapt_sptlrpc_conf(struct obd_device *obd, int initial)
1909 struct filter_obd *filter = &obd->u.filter;
1910 struct sptlrpc_rule_set tmp_rset;
1913 sptlrpc_rule_set_init(&tmp_rset);
1914 rc = sptlrpc_conf_target_get_rules(obd, &tmp_rset, initial);
1916 CERROR("obd %s: failed get sptlrpc rules: %d\n",
1921 sptlrpc_target_update_exp_flavor(obd, &tmp_rset);
1923 cfs_write_lock(&filter->fo_sptlrpc_lock);
1924 sptlrpc_rule_set_free(&filter->fo_sptlrpc_rset);
1925 filter->fo_sptlrpc_rset = tmp_rset;
1926 cfs_write_unlock(&filter->fo_sptlrpc_lock);
1932 * pre-allocate pool of iobuf's to be used by filter_{prep,commit}rw_write().
1934 static int filter_iobuf_pool_init(struct filter_obd *filter)
1941 OBD_ALLOC_GFP(filter->fo_iobuf_pool, OSS_THREADS_MAX * sizeof(*pool),
1943 if (filter->fo_iobuf_pool == NULL)
1946 filter->fo_iobuf_count = OSS_THREADS_MAX;
1951 /* Return iobuf allocated for @thread_id. We don't know in advance how
1952 * many threads there will be so we allocate a large empty array and only
1953 * fill in those slots that are actually in use.
1954 * If we haven't allocated a pool entry for this thread before, do so now. */
1955 void *filter_iobuf_get(struct filter_obd *filter, struct obd_trans_info *oti)
1957 int thread_id = (oti && oti->oti_thread) ?
1958 oti->oti_thread->t_id : -1;
1959 struct filter_iobuf *pool = NULL;
1960 struct filter_iobuf **pool_place = NULL;
1962 if (thread_id >= 0) {
1963 LASSERT(thread_id < filter->fo_iobuf_count);
1964 pool = *(pool_place = &filter->fo_iobuf_pool[thread_id]);
1967 if (unlikely(pool == NULL)) {
1968 pool = filter_alloc_iobuf(filter, OBD_BRW_WRITE,
1969 PTLRPC_MAX_BRW_PAGES);
1970 if (pool_place != NULL)
1977 /* mount the file system (secretly). lustre_cfg parameters are:
1980 * 3 = flags: failover=f, failout=n
1983 int filter_common_setup(struct obd_device *obd, struct lustre_cfg* lcfg,
1986 struct filter_obd *filter = &obd->u.filter;
1987 struct vfsmount *mnt;
1988 struct lustre_mount_info *lmi;
1989 struct obd_uuid uuid;
1997 if (lcfg->lcfg_bufcount < 3 ||
1998 LUSTRE_CFG_BUFLEN(lcfg, 1) < 1 ||
1999 LUSTRE_CFG_BUFLEN(lcfg, 2) < 1)
2002 lmi = server_get_mount(obd->obd_name);
2004 /* We already mounted in lustre_fill_super.
2005 lcfg bufs 1, 2, 4 (device, fstype, mount opts) are ignored.*/
2006 struct lustre_sb_info *lsi = s2lsi(lmi->lmi_sb);
2008 obd->obd_fsops = fsfilt_get_ops(MT_STR(lsi->lsi_ldd));
2010 /* old path - used by lctl */
2011 CERROR("Using old MDS mount method\n");
2012 mnt = ll_kern_mount(lustre_cfg_string(lcfg, 2),
2013 MS_NOATIME|MS_NODIRATIME,
2014 lustre_cfg_string(lcfg, 1), option);
2017 LCONSOLE_ERROR_MSG(0x135, "Can't mount disk %s (%d)\n",
2018 lustre_cfg_string(lcfg, 1), rc);
2022 obd->obd_fsops = fsfilt_get_ops(lustre_cfg_string(lcfg, 2));
2024 if (IS_ERR(obd->obd_fsops))
2025 GOTO(err_mntput, rc = PTR_ERR(obd->obd_fsops));
2027 rc = filter_iobuf_pool_init(filter);
2031 if (lvfs_check_rdonly(lvfs_sbdev(mnt->mnt_sb))) {
2032 CERROR("%s: Underlying device is marked as read-only. "
2033 "Setup failed\n", obd->obd_name);
2034 GOTO(err_ops, rc = -EROFS);
2037 /* failover is the default */
2038 obd->obd_replayable = 1;
2040 if (lcfg->lcfg_bufcount > 3 && LUSTRE_CFG_BUFLEN(lcfg, 3) > 0) {
2041 str = lustre_cfg_string(lcfg, 3);
2042 if (strchr(str, 'n')) {
2043 CWARN("%s: recovery disabled\n", obd->obd_name);
2044 obd->obd_replayable = 0;
2048 filter->fo_vfsmnt = mnt;
2049 obd->u.obt.obt_sb = mnt->mnt_sb;
2050 filter->fo_fstype = mnt->mnt_sb->s_type->name;
2051 CDEBUG(D_SUPER, "%s: mnt = %p\n", filter->fo_fstype, mnt);
2053 fsfilt_setup(obd, obd->u.obt.obt_sb);
2055 OBD_SET_CTXT_MAGIC(&obd->obd_lvfs_ctxt);
2056 obd->obd_lvfs_ctxt.pwdmnt = mnt;
2057 obd->obd_lvfs_ctxt.pwd = mnt->mnt_root;
2058 obd->obd_lvfs_ctxt.fs = get_ds();
2059 obd->obd_lvfs_ctxt.cb_ops = filter_lvfs_ops;
2061 cfs_init_mutex(&filter->fo_init_lock);
2062 filter->fo_committed_group = 0;
2063 filter->fo_destroys_in_progress = 0;
2064 for (i = 0; i < 32; i++)
2065 cfs_sema_init(&filter->fo_create_locks[i], 1);
2067 cfs_spin_lock_init(&filter->fo_translock);
2068 cfs_spin_lock_init(&filter->fo_objidlock);
2069 CFS_INIT_LIST_HEAD(&filter->fo_export_list);
2070 cfs_sema_init(&filter->fo_alloc_lock, 1);
2071 init_brw_stats(&filter->fo_filter_stats);
2072 filter->fo_read_cache = 1; /* enable read-only cache by default */
2073 filter->fo_writethrough_cache = 1; /* enable writethrough cache */
2074 filter->fo_readcache_max_filesize = FILTER_MAX_CACHE_SIZE;
2075 filter->fo_fmd_max_num = FILTER_FMD_MAX_NUM_DEFAULT;
2076 filter->fo_fmd_max_age = FILTER_FMD_MAX_AGE_DEFAULT;
2078 rc = filter_prep(obd);
2082 CFS_INIT_LIST_HEAD(&filter->fo_llog_list);
2083 cfs_spin_lock_init(&filter->fo_llog_list_lock);
2085 filter->fo_fl_oss_capa = 1;
2087 CFS_INIT_LIST_HEAD(&filter->fo_capa_keys);
2088 filter->fo_capa_hash = init_capa_hash();
2089 if (filter->fo_capa_hash == NULL)
2090 GOTO(err_post, rc = -ENOMEM);
2092 sprintf(ns_name, "filter-%s", obd->obd_uuid.uuid);
2093 obd->obd_namespace = ldlm_namespace_new(obd, ns_name, LDLM_NAMESPACE_SERVER,
2094 LDLM_NAMESPACE_GREEDY);
2095 if (obd->obd_namespace == NULL)
2096 GOTO(err_post, rc = -ENOMEM);
2097 obd->obd_namespace->ns_lvbp = obd;
2098 obd->obd_namespace->ns_lvbo = &filter_lvbo;
2099 ldlm_register_intent(obd->obd_namespace, filter_intent_policy);
2101 ptlrpc_init_client(LDLM_CB_REQUEST_PORTAL, LDLM_CB_REPLY_PORTAL,
2102 "filter_ldlm_cb_client", &obd->obd_ldlm_client);
2104 rc = obd_llog_init(obd, &obd->obd_olg, obd, NULL);
2106 CERROR("failed to setup llogging subsystems\n");
2110 cfs_rwlock_init(&filter->fo_sptlrpc_lock);
2111 sptlrpc_rule_set_init(&filter->fo_sptlrpc_rset);
2112 /* do this after llog being initialized */
2113 filter_adapt_sptlrpc_conf(obd, 1);
2115 rc = lquota_setup(filter_quota_interface_ref, obd);
2119 q = bdev_get_queue(mnt->mnt_sb->s_bdev);
2120 if (q->max_sectors < q->max_hw_sectors &&
2121 q->max_sectors < PTLRPC_MAX_BRW_SIZE >> 9)
2122 LCONSOLE_INFO("%s: underlying device %s should be tuned "
2123 "for larger I/O requests: max_sectors = %u "
2124 "could be up to max_hw_sectors=%u\n",
2125 obd->obd_name, mnt->mnt_sb->s_id,
2126 q->max_sectors, q->max_hw_sectors);
2128 uuid_ptr = fsfilt_uuid(obd, obd->u.obt.obt_sb);
2129 if (uuid_ptr != NULL) {
2130 class_uuid_unparse(uuid_ptr, &uuid);
2136 label = fsfilt_get_label(obd, obd->u.obt.obt_sb);
2138 if (obd->obd_recovering) {
2139 LCONSOLE_WARN("OST %s now serving %s (%s%s%s), but will be in "
2140 "recovery for at least %d:%.02d, or until %d "
2141 "client%s reconnect%s.\n",
2142 obd->obd_name, lustre_cfg_string(lcfg, 1),
2143 label ?: "", label ? "/" : "", str,
2144 obd->obd_recovery_timeout / 60,
2145 obd->obd_recovery_timeout % 60,
2146 obd->obd_max_recoverable_clients,
2147 (obd->obd_max_recoverable_clients == 1) ? "":"s",
2148 (obd->obd_max_recoverable_clients == 1) ? "s":"");
2150 LCONSOLE_INFO("OST %s now serving %s (%s%s%s) with recovery "
2151 "%s\n", obd->obd_name, lustre_cfg_string(lcfg, 1),
2152 label ?: "", label ? "/" : "", str,
2153 obd->obd_replayable ? "enabled" : "disabled");
2161 fsfilt_put_ops(obd->obd_fsops);
2162 filter_iobuf_pool_done(filter);
2164 server_put_mount(obd->obd_name, mnt);
2165 obd->u.obt.obt_sb = 0;
2169 static int filter_setup(struct obd_device *obd, struct lustre_cfg* lcfg)
2171 struct lprocfs_static_vars lvars;
2176 CLASSERT(offsetof(struct obd_device, u.obt) ==
2177 offsetof(struct obd_device, u.filter.fo_obt));
2179 if (!LUSTRE_CFG_BUFLEN(lcfg, 1) || !LUSTRE_CFG_BUFLEN(lcfg, 2))
2182 /* 2.6.9 selinux wants a full option page for do_kern_mount (bug6471) */
2183 OBD_PAGE_ALLOC(page, CFS_ALLOC_STD);
2186 addr = (unsigned long)cfs_page_address(page);
2187 clear_page((void *)addr);
2189 /* lprocfs must be setup before the filter so state can be safely added
2190 * to /proc incrementally as the filter is setup */
2191 lprocfs_filter_init_vars(&lvars);
2192 if (lprocfs_obd_setup(obd, lvars.obd_vars) == 0 &&
2193 lprocfs_alloc_obd_stats(obd, LPROC_FILTER_LAST) == 0) {
2194 /* Init obdfilter private stats here */
2195 lprocfs_counter_init(obd->obd_stats, LPROC_FILTER_READ_BYTES,
2196 LPROCFS_CNTR_AVGMINMAX,
2197 "read_bytes", "bytes");
2198 lprocfs_counter_init(obd->obd_stats, LPROC_FILTER_WRITE_BYTES,
2199 LPROCFS_CNTR_AVGMINMAX,
2200 "write_bytes", "bytes");
2201 lprocfs_counter_init(obd->obd_stats, LPROC_FILTER_GET_PAGE,
2202 LPROCFS_CNTR_AVGMINMAX|LPROCFS_CNTR_STDDEV,
2203 "get_page", "usec");
2204 lprocfs_counter_init(obd->obd_stats, LPROC_FILTER_NO_PAGE,
2205 LPROCFS_CNTR_AVGMINMAX,
2206 "get_page_failures", "num");
2207 lprocfs_counter_init(obd->obd_stats, LPROC_FILTER_CACHE_ACCESS,
2208 LPROCFS_CNTR_AVGMINMAX,
2209 "cache_access", "pages");
2210 lprocfs_counter_init(obd->obd_stats, LPROC_FILTER_CACHE_HIT,
2211 LPROCFS_CNTR_AVGMINMAX,
2212 "cache_hit", "pages");
2213 lprocfs_counter_init(obd->obd_stats, LPROC_FILTER_CACHE_MISS,
2214 LPROCFS_CNTR_AVGMINMAX,
2215 "cache_miss", "pages");
2217 lproc_filter_attach_seqstat(obd);
2218 obd->obd_proc_exports_entry = lprocfs_register("exports",
2219 obd->obd_proc_entry,
2221 if (IS_ERR(obd->obd_proc_exports_entry)) {
2222 rc = PTR_ERR(obd->obd_proc_exports_entry);
2223 CERROR("error %d setting up lprocfs for %s\n",
2225 obd->obd_proc_exports_entry = NULL;
2228 if (obd->obd_proc_exports_entry)
2229 lprocfs_add_simple(obd->obd_proc_exports_entry, "clear",
2230 lprocfs_nid_stats_clear_read,
2231 lprocfs_nid_stats_clear_write, obd, NULL);
2233 memcpy((void *)addr, lustre_cfg_buf(lcfg, 4),
2234 LUSTRE_CFG_BUFLEN(lcfg, 4));
2235 rc = filter_common_setup(obd, lcfg, (void *)addr);
2236 OBD_PAGE_FREE(page);
2239 lprocfs_remove_proc_entry("clear", obd->obd_proc_exports_entry);
2240 lprocfs_free_per_client_stats(obd);
2241 lprocfs_free_obd_stats(obd);
2242 lprocfs_obd_cleanup(obd);
2248 static struct llog_operations filter_mds_ost_repl_logops;
2250 static struct llog_operations filter_size_orig_logops = {
2251 .lop_setup = llog_obd_origin_setup,
2252 .lop_cleanup = llog_obd_origin_cleanup,
2253 .lop_add = llog_obd_origin_add
2256 static int filter_olg_fini(struct obd_llog_group *olg)
2258 struct llog_ctxt *ctxt;
2259 int rc = 0, rc2 = 0;
2262 ctxt = llog_group_get_ctxt(olg, LLOG_MDS_OST_REPL_CTXT);
2264 rc = llog_cleanup(ctxt);
2266 ctxt = llog_group_get_ctxt(olg, LLOG_SIZE_ORIG_CTXT);
2268 rc2 = llog_cleanup(ctxt);
2273 ctxt = llog_group_get_ctxt(olg, LLOG_CONFIG_ORIG_CTXT);
2275 rc2 = llog_cleanup(ctxt);
2284 filter_olg_init(struct obd_device *obd, struct obd_llog_group *olg,
2285 struct obd_device *tgt)
2290 rc = llog_setup(obd, olg, LLOG_MDS_OST_REPL_CTXT, tgt, 0, NULL,
2291 &filter_mds_ost_repl_logops);
2295 rc = llog_setup(obd, olg, LLOG_SIZE_ORIG_CTXT, tgt, 0, NULL,
2296 &filter_size_orig_logops);
2302 filter_olg_fini(olg);
2307 * Init the default olg, which is embeded in the obd_device, for filter.
2310 filter_default_olg_init(struct obd_device *obd, struct obd_llog_group *olg,
2311 struct obd_device *tgt)
2313 struct filter_obd *filter = &obd->u.filter;
2314 struct llog_ctxt *ctxt;
2318 filter->fo_lcm = llog_recov_thread_init(obd->obd_name);
2319 if (!filter->fo_lcm)
2322 filter_mds_ost_repl_logops = llog_client_ops;
2323 filter_mds_ost_repl_logops.lop_cancel = llog_obd_repl_cancel;
2324 filter_mds_ost_repl_logops.lop_connect = llog_obd_repl_connect;
2325 filter_mds_ost_repl_logops.lop_sync = llog_obd_repl_sync;
2327 rc = filter_olg_init(obd, olg, tgt);
2329 GOTO(cleanup_lcm, rc);
2331 rc = llog_setup(obd, olg, LLOG_CONFIG_ORIG_CTXT, tgt, 0, NULL,
2334 GOTO(cleanup_olg, rc);
2336 ctxt = llog_group_get_ctxt(olg, LLOG_MDS_OST_REPL_CTXT);
2338 CERROR("Can't get ctxt for %p:%x\n", olg,
2339 LLOG_MDS_OST_REPL_CTXT);
2340 GOTO(cleanup_olg, rc = -ENODEV);
2342 ctxt->loc_lcm = lcm_get(filter->fo_lcm);
2343 ctxt->llog_proc_cb = filter_recov_log_mds_ost_cb;
2344 llog_ctxt_put(ctxt);
2348 filter_olg_fini(olg);
2350 llog_recov_thread_fini(filter->fo_lcm, 1);
2351 filter->fo_lcm = NULL;
2356 filter_llog_init(struct obd_device *obd, struct obd_llog_group *olg,
2357 struct obd_device *tgt, int *index)
2359 struct filter_obd *filter = &obd->u.filter;
2360 struct llog_ctxt *ctxt;
2364 LASSERT(olg != NULL);
2365 if (olg == &obd->obd_olg)
2366 return filter_default_olg_init(obd, olg, tgt);
2368 LASSERT(filter->fo_lcm != NULL);
2369 rc = filter_olg_init(obd, olg, tgt);
2372 ctxt = llog_group_get_ctxt(olg, LLOG_MDS_OST_REPL_CTXT);
2374 CERROR("Can't get ctxt for %p:%x\n", olg,
2375 LLOG_MDS_OST_REPL_CTXT);
2376 filter_olg_fini(olg);
2379 ctxt->llog_proc_cb = filter_recov_log_mds_ost_cb;
2380 ctxt->loc_lcm = lcm_get(filter->fo_lcm);
2381 llog_ctxt_put(ctxt);
2385 static int filter_llog_finish(struct obd_device *obd, int count)
2387 struct filter_obd *filter = &obd->u.filter;
2388 struct llog_ctxt *ctxt;
2391 ctxt = llog_group_get_ctxt(&obd->obd_olg, LLOG_MDS_OST_REPL_CTXT);
2394 * Make sure that no cached llcds left in recov_thread.
2395 * We actually do sync in disconnect time, but disconnect
2396 * may not come being marked rq_no_resend = 1.
2398 llog_sync(ctxt, NULL);
2401 * Balance class_import_get() in llog_receptor_accept().
2402 * This is safe to do, as llog is already synchronized
2403 * and its import may go.
2405 cfs_mutex_down(&ctxt->loc_sem);
2406 if (ctxt->loc_imp) {
2407 class_import_put(ctxt->loc_imp);
2408 ctxt->loc_imp = NULL;
2410 cfs_mutex_up(&ctxt->loc_sem);
2411 llog_ctxt_put(ctxt);
2414 if (filter->fo_lcm) {
2415 cfs_mutex_down(&ctxt->loc_sem);
2416 llog_recov_thread_fini(filter->fo_lcm, obd->obd_force);
2417 filter->fo_lcm = NULL;
2418 cfs_mutex_up(&ctxt->loc_sem);
2420 RETURN(filter_olg_fini(&obd->obd_olg));
2424 * Find the group llog according to group index in the llog group list.
2426 static struct obd_llog_group *
2427 filter_find_olg_internal(struct filter_obd *filter, int group)
2429 struct obd_llog_group *olg;
2431 LASSERT_SPIN_LOCKED(&filter->fo_llog_list_lock);
2432 cfs_list_for_each_entry(olg, &filter->fo_llog_list, olg_list) {
2433 if (olg->olg_group == group)
2440 * Find the group llog according to group index on the filter
2442 struct obd_llog_group *filter_find_olg(struct obd_device *obd, int group)
2444 struct obd_llog_group *olg = NULL;
2445 struct filter_obd *filter;
2447 filter = &obd->u.filter;
2449 if (group == FILTER_GROUP_LLOG)
2450 RETURN(&obd->obd_olg);
2452 cfs_spin_lock(&filter->fo_llog_list_lock);
2453 olg = filter_find_olg_internal(filter, group);
2454 cfs_spin_unlock(&filter->fo_llog_list_lock);
2459 * Find the llog_group of the filter according to the group. If it can not
2460 * find, create the llog_group, which only happens when mds is being synced
2463 struct obd_llog_group *filter_find_create_olg(struct obd_device *obd, int group)
2465 struct obd_llog_group *olg = NULL;
2466 struct filter_obd *filter;
2469 filter = &obd->u.filter;
2471 if (group == FILTER_GROUP_LLOG)
2472 RETURN(&obd->obd_olg);
2474 cfs_spin_lock(&filter->fo_llog_list_lock);
2475 olg = filter_find_olg_internal(filter, group);
2477 if (olg->olg_initializing) {
2478 GOTO(out_unlock, olg = ERR_PTR(-EBUSY));
2480 GOTO(out_unlock, olg);
2485 GOTO(out_unlock, olg = ERR_PTR(-ENOMEM));
2487 llog_group_init(olg, group);
2488 cfs_list_add(&olg->olg_list, &filter->fo_llog_list);
2489 olg->olg_initializing = 1;
2490 cfs_spin_unlock(&filter->fo_llog_list_lock);
2492 rc = obd_llog_init(obd, olg, obd, NULL);
2494 cfs_spin_lock(&filter->fo_llog_list_lock);
2495 cfs_list_del(&olg->olg_list);
2496 cfs_spin_unlock(&filter->fo_llog_list_lock);
2498 GOTO(out, olg = ERR_PTR(-ENOMEM));
2500 cfs_spin_lock(&filter->fo_llog_list_lock);
2501 olg->olg_initializing = 0;
2502 cfs_spin_unlock(&filter->fo_llog_list_lock);
2503 CDEBUG(D_OTHER, "%s: new llog group %u (0x%p)\n",
2504 obd->obd_name, group, olg);
2509 cfs_spin_unlock(&filter->fo_llog_list_lock);
2513 static int filter_llog_connect(struct obd_export *exp,
2514 struct llogd_conn_body *body)
2516 struct obd_device *obd = exp->exp_obd;
2517 struct llog_ctxt *ctxt;
2518 struct obd_llog_group *olg;
2522 CDEBUG(D_OTHER, "%s: LLog connect for: "LPX64"/"LPX64":%x\n",
2523 obd->obd_name, body->lgdc_logid.lgl_oid,
2524 body->lgdc_logid.lgl_ogr, body->lgdc_logid.lgl_ogen);
2526 olg = filter_find_olg(obd, body->lgdc_logid.lgl_ogr);
2528 CERROR(" %s: can not find olg of group %d\n",
2529 obd->obd_name, (int)body->lgdc_logid.lgl_ogr);
2532 llog_group_set_export(olg, exp);
2534 ctxt = llog_group_get_ctxt(olg, body->lgdc_ctxt_idx);
2535 LASSERTF(ctxt != NULL, "ctxt is not null, ctxt idx %d \n",
2536 body->lgdc_ctxt_idx);
2538 CWARN("%s: Recovery from log "LPX64"/"LPX64":%x\n",
2539 obd->obd_name, body->lgdc_logid.lgl_oid,
2540 body->lgdc_logid.lgl_ogr, body->lgdc_logid.lgl_ogen);
2542 cfs_spin_lock_bh(&obd->obd_processing_task_lock);
2543 obd->u.filter.fo_mds_ost_sync = 1;
2544 cfs_spin_unlock_bh(&obd->obd_processing_task_lock);
2545 rc = llog_connect(ctxt, &body->lgdc_logid,
2546 &body->lgdc_gen, NULL);
2547 llog_ctxt_put(ctxt);
2549 CERROR("failed to connect rc %d idx %d\n", rc,
2550 body->lgdc_ctxt_idx);
2555 static int filter_llog_preclean(struct obd_device *obd)
2557 struct obd_llog_group *olg, *tmp;
2558 struct filter_obd *filter;
2559 cfs_list_t remove_list;
2563 rc = obd_llog_finish(obd, 0);
2565 CERROR("failed to cleanup llogging subsystem\n");
2567 filter = &obd->u.filter;
2568 CFS_INIT_LIST_HEAD(&remove_list);
2570 cfs_spin_lock(&filter->fo_llog_list_lock);
2571 while (!cfs_list_empty(&filter->fo_llog_list)) {
2572 olg = cfs_list_entry(filter->fo_llog_list.next,
2573 struct obd_llog_group, olg_list);
2574 cfs_list_del(&olg->olg_list);
2575 cfs_list_add(&olg->olg_list, &remove_list);
2577 cfs_spin_unlock(&filter->fo_llog_list_lock);
2579 cfs_list_for_each_entry_safe(olg, tmp, &remove_list, olg_list) {
2580 cfs_list_del_init(&olg->olg_list);
2581 rc = filter_olg_fini(olg);
2583 CERROR("failed to cleanup llogging subsystem for %u\n",
2591 static int filter_precleanup(struct obd_device *obd,
2592 enum obd_cleanup_stage stage)
2598 case OBD_CLEANUP_EARLY:
2600 case OBD_CLEANUP_EXPORTS:
2601 /* Stop recovery before namespace cleanup. */
2602 target_recovery_fini(obd);
2603 rc = filter_llog_preclean(obd);
2609 static int filter_cleanup(struct obd_device *obd)
2611 struct filter_obd *filter = &obd->u.filter;
2615 LCONSOLE_WARN("%s: shutting down for failover; client state "
2616 "will be preserved.\n", obd->obd_name);
2618 obd_exports_barrier(obd);
2619 obd_zombie_barrier();
2621 lprocfs_remove_proc_entry("clear", obd->obd_proc_exports_entry);
2622 lprocfs_free_per_client_stats(obd);
2623 lprocfs_free_obd_stats(obd);
2624 lprocfs_obd_cleanup(obd);
2625 lquota_cleanup(filter_quota_interface_ref, obd);
2627 ldlm_namespace_free(obd->obd_namespace, NULL, obd->obd_force);
2628 obd->obd_namespace = NULL;
2630 sptlrpc_rule_set_free(&filter->fo_sptlrpc_rset);
2632 if (obd->u.obt.obt_sb == NULL)
2637 LL_DQUOT_OFF(obd->u.obt.obt_sb);
2638 shrink_dcache_sb(obd->u.obt.obt_sb);
2640 server_put_mount(obd->obd_name, filter->fo_vfsmnt);
2641 obd->u.obt.obt_sb = NULL;
2643 fsfilt_put_ops(obd->obd_fsops);
2645 filter_iobuf_pool_done(filter);
2647 LCONSOLE_INFO("OST %s has stopped.\n", obd->obd_name);
2652 static int filter_connect_internal(struct obd_export *exp,
2653 struct obd_connect_data *data,
2656 struct filter_export_data *fed = &exp->exp_filter_data;
2661 CDEBUG(D_RPCTRACE, "%s: cli %s/%p ocd_connect_flags: "LPX64
2662 " ocd_version: %x ocd_grant: %d ocd_index: %u\n",
2663 exp->exp_obd->obd_name, exp->exp_client_uuid.uuid, exp,
2664 data->ocd_connect_flags, data->ocd_version,
2665 data->ocd_grant, data->ocd_index);
2667 if (fed->fed_group != 0 && fed->fed_group != data->ocd_group) {
2668 CWARN("!!! This export (nid %s) used object group %d "
2669 "earlier; now it's trying to use group %d! This could "
2670 "be a bug in the MDS. Please report to "
2671 "http://bugzilla.lustre.org/\n",
2672 obd_export_nid2str(exp), fed->fed_group,data->ocd_group);
2675 fed->fed_group = data->ocd_group;
2677 data->ocd_connect_flags &= OST_CONNECT_SUPPORTED;
2678 exp->exp_connect_flags = data->ocd_connect_flags;
2679 data->ocd_version = LUSTRE_VERSION_CODE;
2681 /* Kindly make sure the SKIP_ORPHAN flag is from MDS. */
2682 if (!ergo(data->ocd_connect_flags & OBD_CONNECT_SKIP_ORPHAN,
2683 data->ocd_connect_flags & OBD_CONNECT_MDS))
2686 if (exp->exp_connect_flags & OBD_CONNECT_GRANT) {
2687 struct filter_obd *filter = &exp->exp_obd->u.filter;
2688 obd_size left, want;
2690 cfs_spin_lock(&exp->exp_obd->obd_osfs_lock);
2691 left = filter_grant_space_left(exp);
2692 want = data->ocd_grant;
2693 filter_grant(exp, fed->fed_grant, want, left, (reconnect == 0));
2694 data->ocd_grant = fed->fed_grant;
2695 cfs_spin_unlock(&exp->exp_obd->obd_osfs_lock);
2697 CDEBUG(D_CACHE, "%s: cli %s/%p ocd_grant: %d want: "
2698 LPU64" left: "LPU64"\n", exp->exp_obd->obd_name,
2699 exp->exp_client_uuid.uuid, exp,
2700 data->ocd_grant, want, left);
2702 filter->fo_tot_granted_clients ++;
2705 if (data->ocd_connect_flags & OBD_CONNECT_INDEX) {
2706 struct filter_obd *filter = &exp->exp_obd->u.filter;
2707 struct lr_server_data *lsd = filter->fo_fsd;
2708 int index = le32_to_cpu(lsd->lsd_ost_index);
2710 if (!(lsd->lsd_feature_compat &
2711 cpu_to_le32(OBD_COMPAT_OST))) {
2712 /* this will only happen on the first connect */
2713 lsd->lsd_ost_index = cpu_to_le32(data->ocd_index);
2714 lsd->lsd_feature_compat |= cpu_to_le32(OBD_COMPAT_OST);
2715 /* sync is not needed here as filter_client_add will
2716 * set exp_need_sync flag */
2717 filter_update_server_data(exp->exp_obd,
2718 filter->fo_rcvd_filp, lsd);
2719 } else if (index != data->ocd_index) {
2720 LCONSOLE_ERROR_MSG(0x136, "Connection from %s to index"
2721 " %u doesn't match actual OST index"
2722 " %u in last_rcvd file, bad "
2724 obd_export_nid2str(exp), index,
2728 /* FIXME: Do the same with the MDS UUID and fsd_peeruuid.
2729 * FIXME: We don't strictly need the COMPAT flag for that,
2730 * FIXME: as fsd_peeruuid[0] will tell us if that is set.
2731 * FIXME: We needed it for the index, as index 0 is valid. */
2734 if (OBD_FAIL_CHECK(OBD_FAIL_OST_BRW_SIZE)) {
2735 data->ocd_brw_size = 65536;
2736 } else if (data->ocd_connect_flags & OBD_CONNECT_BRW_SIZE) {
2737 data->ocd_brw_size = min(data->ocd_brw_size,
2738 (__u32)(PTLRPC_MAX_BRW_PAGES << CFS_PAGE_SHIFT));
2739 LASSERT(data->ocd_brw_size);
2742 if (data->ocd_connect_flags & OBD_CONNECT_CKSUM) {
2743 __u32 cksum_types = data->ocd_cksum_types;
2745 /* The client set in ocd_cksum_types the checksum types it
2746 * supports. We have to mask off the algorithms that we don't
2748 if (cksum_types & OBD_CKSUM_ALL)
2749 data->ocd_cksum_types &= OBD_CKSUM_ALL;
2751 data->ocd_cksum_types = OBD_CKSUM_CRC32;
2753 CDEBUG(D_RPCTRACE, "%s: cli %s supports cksum type %x, return "
2754 "%x\n", exp->exp_obd->obd_name,
2755 obd_export_nid2str(exp), cksum_types,
2756 data->ocd_cksum_types);
2758 /* This client does not support OBD_CONNECT_CKSUM
2759 * fall back to CRC32 */
2760 CDEBUG(D_RPCTRACE, "%s: cli %s does not support "
2761 "OBD_CONNECT_CKSUM, CRC32 will be used\n",
2762 exp->exp_obd->obd_name,
2763 obd_export_nid2str(exp));
2769 static int filter_reconnect(const struct lu_env *env,
2770 struct obd_export *exp, struct obd_device *obd,
2771 struct obd_uuid *cluuid,
2772 struct obd_connect_data *data,
2778 if (exp == NULL || obd == NULL || cluuid == NULL)
2781 rc = filter_connect_internal(exp, data, 1);
2783 filter_export_stats_init(obd, exp, localdata);
2788 /* nearly identical to mds_connect */
2789 static int filter_connect(const struct lu_env *env,
2790 struct obd_export **exp, struct obd_device *obd,
2791 struct obd_uuid *cluuid,
2792 struct obd_connect_data *data, void *localdata)
2794 struct lvfs_run_ctxt saved;
2795 struct lustre_handle conn = { 0 };
2796 struct obd_export *lexp;
2797 struct filter_export_data *fed;
2798 struct lsd_client_data *lcd = NULL;
2803 if (exp == NULL || obd == NULL || cluuid == NULL)
2806 rc = class_connect(&conn, obd, cluuid);
2809 lexp = class_conn2export(&conn);
2810 LASSERT(lexp != NULL);
2812 fed = &lexp->exp_filter_data;
2814 rc = filter_connect_internal(lexp, data, 0);
2818 filter_export_stats_init(obd, lexp, localdata);
2819 if (obd->obd_replayable) {
2820 OBD_ALLOC(lcd, sizeof(*lcd));
2822 CERROR("filter: out of memory for client data\n");
2823 GOTO(cleanup, rc = -ENOMEM);
2826 memcpy(lcd->lcd_uuid, cluuid, sizeof(lcd->lcd_uuid));
2828 rc = filter_client_add(obd, lexp, -1);
2833 group = data->ocd_group;
2835 CWARN("%s: Received MDS connection ("LPX64"); group %d\n",
2836 obd->obd_name, lexp->exp_handle.h_cookie, group);
2838 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
2839 rc = filter_read_groups(obd, group, 1);
2840 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
2842 CERROR("can't read group %u\n", group);
2852 fed->fed_lcd = NULL;
2854 class_disconnect(lexp);
2863 /* Do extra sanity checks for grant accounting. We do this at connect,
2864 * disconnect, and statfs RPC time, so it shouldn't be too bad. We can
2865 * always get rid of it or turn it off when we know accounting is good. */
2866 static void filter_grant_sanity_check(struct obd_device *obd, const char *func)
2868 struct filter_export_data *fed;
2869 struct obd_export *exp;
2870 obd_size maxsize = obd->obd_osfs.os_blocks * obd->obd_osfs.os_bsize;
2871 obd_size tot_dirty = 0, tot_pending = 0, tot_granted = 0;
2872 obd_size fo_tot_dirty, fo_tot_pending, fo_tot_granted;
2874 if (cfs_list_empty(&obd->obd_exports))
2877 /* We don't want to do this for large machines that do lots of
2878 mounts or unmounts. It burns... */
2879 if (obd->obd_num_exports > 100)
2882 cfs_spin_lock(&obd->obd_osfs_lock);
2883 cfs_spin_lock(&obd->obd_dev_lock);
2884 cfs_list_for_each_entry(exp, &obd->obd_exports, exp_obd_chain) {
2886 fed = &exp->exp_filter_data;
2887 if (fed->fed_grant < 0 || fed->fed_pending < 0 ||
2890 if (maxsize > 0) { /* we may not have done a statfs yet */
2891 LASSERTF(fed->fed_grant + fed->fed_pending <= maxsize,
2892 "%s: cli %s/%p %ld+%ld > "LPU64"\n", func,
2893 exp->exp_client_uuid.uuid, exp,
2894 fed->fed_grant, fed->fed_pending, maxsize);
2895 LASSERTF(fed->fed_dirty <= maxsize,
2896 "%s: cli %s/%p %ld > "LPU64"\n", func,
2897 exp->exp_client_uuid.uuid, exp,
2898 fed->fed_dirty, maxsize);
2901 CERROR("%s: cli %s/%p dirty %ld pend %ld grant %ld\n",
2902 obd->obd_name, exp->exp_client_uuid.uuid, exp,
2903 fed->fed_dirty, fed->fed_pending,fed->fed_grant);
2905 CDEBUG(D_CACHE, "%s: cli %s/%p dirty %ld pend %ld grant %ld\n",
2906 obd->obd_name, exp->exp_client_uuid.uuid, exp,
2907 fed->fed_dirty, fed->fed_pending,fed->fed_grant);
2908 tot_granted += fed->fed_grant + fed->fed_pending;
2909 tot_pending += fed->fed_pending;
2910 tot_dirty += fed->fed_dirty;
2912 fo_tot_granted = obd->u.filter.fo_tot_granted;
2913 fo_tot_pending = obd->u.filter.fo_tot_pending;
2914 fo_tot_dirty = obd->u.filter.fo_tot_dirty;
2915 cfs_spin_unlock(&obd->obd_dev_lock);
2916 cfs_spin_unlock(&obd->obd_osfs_lock);
2918 /* Do these assertions outside the spinlocks so we don't kill system */
2919 if (tot_granted != fo_tot_granted)
2920 CERROR("%s: tot_granted "LPU64" != fo_tot_granted "LPU64"\n",
2921 func, tot_granted, fo_tot_granted);
2922 if (tot_pending != fo_tot_pending)
2923 CERROR("%s: tot_pending "LPU64" != fo_tot_pending "LPU64"\n",
2924 func, tot_pending, fo_tot_pending);
2925 if (tot_dirty != fo_tot_dirty)
2926 CERROR("%s: tot_dirty "LPU64" != fo_tot_dirty "LPU64"\n",
2927 func, tot_dirty, fo_tot_dirty);
2928 if (tot_pending > tot_granted)
2929 CERROR("%s: tot_pending "LPU64" > tot_granted "LPU64"\n",
2930 func, tot_pending, tot_granted);
2931 if (tot_granted > maxsize)
2932 CERROR("%s: tot_granted "LPU64" > maxsize "LPU64"\n",
2933 func, tot_granted, maxsize);
2934 if (tot_dirty > maxsize)
2935 CERROR("%s: tot_dirty "LPU64" > maxsize "LPU64"\n",
2936 func, tot_dirty, maxsize);
2939 /* Remove this client from the grant accounting totals. We also remove
2940 * the export from the obd device under the osfs and dev locks to ensure
2941 * that the filter_grant_sanity_check() calculations are always valid.
2942 * The client should do something similar when it invalidates its import. */
2943 static void filter_grant_discard(struct obd_export *exp)
2945 struct obd_device *obd = exp->exp_obd;
2946 struct filter_obd *filter = &obd->u.filter;
2947 struct filter_export_data *fed = &exp->exp_filter_data;
2949 cfs_spin_lock(&obd->obd_osfs_lock);
2950 LASSERTF(filter->fo_tot_granted >= fed->fed_grant,
2951 "%s: tot_granted "LPU64" cli %s/%p fed_grant %ld\n",
2952 obd->obd_name, filter->fo_tot_granted,
2953 exp->exp_client_uuid.uuid, exp, fed->fed_grant);
2954 filter->fo_tot_granted -= fed->fed_grant;
2955 LASSERTF(filter->fo_tot_pending >= fed->fed_pending,
2956 "%s: tot_pending "LPU64" cli %s/%p fed_pending %ld\n",
2957 obd->obd_name, filter->fo_tot_pending,
2958 exp->exp_client_uuid.uuid, exp, fed->fed_pending);
2959 /* fo_tot_pending is handled in filter_grant_commit as bulk finishes */
2960 LASSERTF(filter->fo_tot_dirty >= fed->fed_dirty,
2961 "%s: tot_dirty "LPU64" cli %s/%p fed_dirty %ld\n",
2962 obd->obd_name, filter->fo_tot_dirty,
2963 exp->exp_client_uuid.uuid, exp, fed->fed_dirty);
2964 filter->fo_tot_dirty -= fed->fed_dirty;
2968 cfs_spin_unlock(&obd->obd_osfs_lock);
2971 static int filter_destroy_export(struct obd_export *exp)
2975 if (exp->exp_filter_data.fed_pending)
2976 CERROR("%s: cli %s/%p has %lu pending on destroyed export\n",
2977 exp->exp_obd->obd_name, exp->exp_client_uuid.uuid,
2978 exp, exp->exp_filter_data.fed_pending);
2980 lquota_clearinfo(filter_quota_interface_ref, exp, exp->exp_obd);
2982 target_destroy_export(exp);
2983 ldlm_destroy_export(exp);
2985 if (obd_uuid_equals(&exp->exp_client_uuid, &exp->exp_obd->obd_uuid))
2989 if (!exp->exp_obd->obd_replayable)
2990 fsfilt_sync(exp->exp_obd, exp->exp_obd->u.obt.obt_sb);
2992 filter_grant_discard(exp);
2993 filter_fmd_cleanup(exp);
2995 if (exp->exp_connect_flags & OBD_CONNECT_GRANT_SHRINK) {
2996 struct filter_obd *filter = &exp->exp_obd->u.filter;
2997 if (filter->fo_tot_granted_clients > 0)
2998 filter->fo_tot_granted_clients --;
3001 if (!(exp->exp_flags & OBD_OPT_FORCE))
3002 filter_grant_sanity_check(exp->exp_obd, __FUNCTION__);
3007 static void filter_sync_llogs(struct obd_device *obd, struct obd_export *dexp)
3009 struct obd_llog_group *olg_min, *olg;
3010 struct filter_obd *filter;
3011 int worked = -1, group;
3012 struct llog_ctxt *ctxt;
3015 filter = &obd->u.filter;
3017 /* we can't sync log holding spinlock. also, we do not want to get
3018 * into livelock. so we do following: loop over MDS's exports in
3019 * group order and skip already synced llogs -bzzz */
3021 /* look for group with min. number, but > worked */
3024 cfs_spin_lock(&filter->fo_llog_list_lock);
3025 cfs_list_for_each_entry(olg, &filter->fo_llog_list, olg_list) {
3026 if (olg->olg_group <= worked) {
3027 /* this group is already synced */
3030 if (group < olg->olg_group) {
3031 /* we have group with smaller number to sync */
3034 /* store current minimal group */
3036 group = olg->olg_group;
3038 cfs_spin_unlock(&filter->fo_llog_list_lock);
3040 if (olg_min == NULL)
3043 worked = olg_min->olg_group;
3044 if (olg_min->olg_exp &&
3045 (dexp == olg_min->olg_exp || dexp == NULL)) {
3047 ctxt = llog_group_get_ctxt(olg_min,
3048 LLOG_MDS_OST_REPL_CTXT);
3050 err = llog_sync(ctxt, olg_min->olg_exp);
3051 llog_ctxt_put(ctxt);
3053 CERROR("error flushing logs to MDS: "
3058 } while (olg_min != NULL);
3061 /* Also incredibly similar to mds_disconnect */
3062 static int filter_disconnect(struct obd_export *exp)
3064 struct obd_device *obd = exp->exp_obd;
3069 class_export_get(exp);
3071 if (!(exp->exp_flags & OBD_OPT_FORCE))
3072 filter_grant_sanity_check(obd, __FUNCTION__);
3073 filter_grant_discard(exp);
3075 /* Flush any remaining cancel messages out to the target */
3076 filter_sync_llogs(obd, exp);
3078 lquota_clearinfo(filter_quota_interface_ref, exp, exp->exp_obd);
3080 rc = server_disconnect_export(exp);
3082 if (exp->exp_obd->obd_replayable)
3083 filter_client_free(exp);
3085 fsfilt_sync(obd, obd->u.obt.obt_sb);
3087 class_export_put(exp);
3091 /* reverse import is changed, sync all cancels */
3092 static void filter_revimp_update(struct obd_export *exp)
3097 class_export_get(exp);
3099 /* flush any remaining cancel messages out to the target */
3100 filter_sync_llogs(exp->exp_obd, exp);
3101 class_export_put(exp);
3105 static int filter_ping(struct obd_export *exp)
3107 filter_fmd_expire(exp);
3111 struct dentry *__filter_oa2dentry(struct obd_device *obd, struct obdo *oa,
3112 const char *what, int quiet)
3114 struct dentry *dchild = NULL;
3117 if (oa->o_valid & OBD_MD_FLGROUP)
3120 dchild = filter_fid2dentry(obd, NULL, group, oa->o_id);
3122 if (IS_ERR(dchild)) {
3123 CERROR("%s error looking up object: "LPU64":"LPU64"\n",
3124 what, group, oa->o_id);
3128 if (dchild->d_inode == NULL) {
3130 CERROR("%s: %s on non-existent object: "LPU64"\n",
3131 obd->obd_name, what, oa->o_id);
3133 RETURN(ERR_PTR(-ENOENT));
3139 static int filter_getattr(struct obd_export *exp, struct obd_info *oinfo)
3141 struct dentry *dentry = NULL;
3142 struct obd_device *obd;
3146 LASSERT(oinfo->oi_oa->o_valid & OBD_MD_FLGROUP);
3147 rc = filter_auth_capa(exp, NULL, oinfo->oi_oa->o_gr,
3148 oinfo_capa(oinfo), CAPA_OPC_META_READ);
3152 obd = class_exp2obd(exp);
3154 CDEBUG(D_IOCTL, "invalid client export %p\n", exp);
3158 dentry = filter_oa2dentry(obd, oinfo->oi_oa);
3160 RETURN(PTR_ERR(dentry));
3162 /* Limit the valid bits in the return data to what we actually use */
3163 oinfo->oi_oa->o_valid = OBD_MD_FLID;
3164 obdo_from_inode(oinfo->oi_oa, dentry->d_inode, FILTER_VALID_FLAGS);
3170 /* this should be enabled/disabled in condition to enabled/disabled large
3171 * inodes (fast EAs) in backing store FS. */
3172 int filter_update_fidea(struct obd_export *exp, struct inode *inode,
3173 void *handle, struct obdo *oa)
3175 struct obd_device *obd = exp->exp_obd;
3179 if (oa->o_valid & OBD_MD_FLFID) {
3180 struct filter_fid ff;
3182 if (!(oa->o_valid & OBD_MD_FLGROUP))
3184 /* packing fid and converting it to LE for storing into EA.
3185 * Here ->o_stripe_idx should be filled by LOV and rest of
3186 * fields - by client. */
3187 ff.ff_fid.id = cpu_to_le64(oa->o_fid);
3188 ff.ff_fid.f_type = cpu_to_le32(oa->o_stripe_idx);
3189 ff.ff_fid.generation = cpu_to_le32(oa->o_generation);
3190 ff.ff_objid = cpu_to_le64(oa->o_id);
3191 ff.ff_group = cpu_to_le64(oa->o_gr);
3193 CDEBUG(D_INODE, "storing filter fid EA ("LPU64"/%u/%u"
3194 LPU64"/"LPU64")\n", oa->o_fid, oa->o_stripe_idx,
3195 oa->o_generation, oa->o_id, oa->o_gr);
3197 rc = fsfilt_set_md(obd, inode, handle, &ff, sizeof(ff), "fid");
3199 CERROR("store fid in object failed! rc: %d\n", rc);
3201 CDEBUG(D_HA, "OSS object without fid info!\n");
3207 /* this is called from filter_truncate() until we have filter_punch() */
3208 int filter_setattr_internal(struct obd_export *exp, struct dentry *dentry,
3209 struct obdo *oa, struct obd_trans_info *oti)
3211 unsigned int orig_ids[MAXQUOTAS] = {0, 0};
3212 struct llog_cookie *fcc = NULL;
3213 struct filter_obd *filter;
3214 int rc, err, sync = 0;
3215 loff_t old_size = 0;
3216 unsigned int ia_valid;
3217 struct inode *inode;
3218 struct page *page = NULL;
3223 LASSERT(dentry != NULL);
3224 LASSERT(!IS_ERR(dentry));
3226 inode = dentry->d_inode;
3227 LASSERT(inode != NULL);
3229 filter = &exp->exp_obd->u.filter;
3230 iattr_from_obdo(&iattr, oa, oa->o_valid);
3231 ia_valid = iattr.ia_valid;
3233 if (oa->o_valid & OBD_MD_FLCOOKIE) {
3234 OBD_ALLOC(fcc, sizeof(*fcc));
3236 *fcc = oa->o_lcookie;
3238 if (ia_valid & (ATTR_SIZE | ATTR_UID | ATTR_GID)) {
3240 /* Filter truncates and writes are serialized by
3241 * i_alloc_sem, see the comment in
3242 * filter_preprw_write.*/
3243 if (ia_valid & ATTR_SIZE)
3244 down_write(&inode->i_alloc_sem);
3245 LOCK_INODE_MUTEX(inode);
3246 old_size = i_size_read(inode);
3249 /* VBR: version recovery check */
3250 rc = filter_version_get_check(exp, oti, inode);
3252 GOTO(out_unlock, rc);
3254 /* Let's pin the last page so that ldiskfs_truncate
3255 * should not start GFP_FS allocation. */
3256 if (ia_valid & ATTR_SIZE) {
3257 page = grab_cache_page(inode->i_mapping,
3258 iattr.ia_size >> PAGE_CACHE_SHIFT);
3260 GOTO(out_unlock, rc = -ENOMEM);
3265 /* If the inode still has SUID+SGID bits set (see filter_precreate())
3266 * then we will accept the UID+GID sent by the client during write for
3267 * initializing the ownership of this inode. We only allow this to
3268 * happen once so clear these bits in setattr. In 2.6 kernels it is
3269 * possible to get ATTR_UID and ATTR_GID separately, so we only clear
3270 * the flags that are actually being set. */
3271 if (ia_valid & (ATTR_UID | ATTR_GID)) {
3272 CDEBUG(D_INODE, "update UID/GID to %lu/%lu\n",
3273 (unsigned long)oa->o_uid, (unsigned long)oa->o_gid);
3275 if ((inode->i_mode & S_ISUID) && (ia_valid & ATTR_UID)) {
3276 if (!(ia_valid & ATTR_MODE)) {
3277 iattr.ia_mode = inode->i_mode;
3278 iattr.ia_valid |= ATTR_MODE;
3280 iattr.ia_mode &= ~S_ISUID;
3282 if ((inode->i_mode & S_ISGID) && (ia_valid & ATTR_GID)) {
3283 if (!(iattr.ia_valid & ATTR_MODE)) {
3284 iattr.ia_mode = inode->i_mode;
3285 iattr.ia_valid |= ATTR_MODE;
3287 iattr.ia_mode &= ~S_ISGID;
3290 orig_ids[USRQUOTA] = inode->i_uid;
3291 orig_ids[GRPQUOTA] = inode->i_gid;
3292 handle = fsfilt_start_log(exp->exp_obd, inode,
3293 FSFILT_OP_SETATTR, oti, 1);
3295 GOTO(out_unlock, rc = PTR_ERR(handle));
3297 /* update inode EA only once when inode is suid bit marked. As
3298 * on 2.6.x UID and GID may be set separately, we check here
3299 * only one of them to avoid double setting. */
3300 if (inode->i_mode & S_ISUID)
3301 filter_update_fidea(exp, inode, handle, oa);
3303 handle = fsfilt_start(exp->exp_obd, inode,
3304 FSFILT_OP_SETATTR, oti);
3306 GOTO(out_unlock, rc = PTR_ERR(handle));
3308 if (oa->o_valid & OBD_MD_FLFLAGS) {
3309 rc = fsfilt_iocontrol(exp->exp_obd, dentry,
3310 FSFILT_IOC_SETFLAGS, (long)&oa->o_flags);
3312 rc = fsfilt_setattr(exp->exp_obd, dentry, handle, &iattr, 1);
3314 /* set cancel cookie callback function */
3315 sync = fsfilt_add_journal_cb(exp->exp_obd, 0, handle,
3316 filter_cancel_cookies_cb,
3320 if (OBD_FAIL_CHECK(OBD_FAIL_OST_SETATTR_CREDITS))
3321 fsfilt_extend(exp->exp_obd, inode, 0, handle);
3323 /* The truncate might have used up our transaction credits. Make
3324 * sure we have one left for the last_rcvd update. */
3325 err = fsfilt_extend(exp->exp_obd, inode, 1, handle);
3327 rc = filter_finish_transno(exp, inode, oti, rc, sync);
3329 filter_cancel_cookies_cb(exp->exp_obd, 0, fcc, rc);
3333 err = fsfilt_commit(exp->exp_obd, inode, handle, 0);
3335 CERROR("error on commit, err = %d\n", err);
3342 /* For a partial-page truncate flush the page to disk immediately
3343 * to avoid data corruption during direct disk write. b=17397 */
3344 if (!sync && (iattr.ia_valid & ATTR_SIZE) &&
3345 old_size != iattr.ia_size && (iattr.ia_size & ~CFS_PAGE_MASK)) {
3346 err = filemap_fdatawrite_range(inode->i_mapping, iattr.ia_size,
3356 page_cache_release(page);
3358 if (ia_valid & (ATTR_SIZE | ATTR_UID | ATTR_GID))
3359 UNLOCK_INODE_MUTEX(inode);
3360 if (ia_valid & ATTR_SIZE)
3361 up_write(&inode->i_alloc_sem);
3363 OBD_FREE(fcc, sizeof(*fcc));
3365 /* trigger quota release */
3366 if (ia_valid & (ATTR_SIZE | ATTR_UID | ATTR_GID)) {
3367 unsigned int cur_ids[MAXQUOTAS] = {oa->o_uid, oa->o_gid};
3368 int rc2 = lquota_adjust(filter_quota_interface_ref,
3369 exp->exp_obd, cur_ids,
3370 orig_ids, rc, FSFILT_OP_SETATTR);
3371 CDEBUG(rc2 ? D_ERROR : D_QUOTA,
3372 "filter adjust qunit. (rc:%d)\n", rc2);
3377 /* this is called from filter_truncate() until we have filter_punch() */
3378 int filter_setattr(struct obd_export *exp, struct obd_info *oinfo,
3379 struct obd_trans_info *oti)
3381 struct obdo *oa = oinfo->oi_oa;
3382 struct lustre_capa *capa = oinfo_capa(oinfo);
3383 struct ldlm_res_id res_id;
3384 struct filter_mod_data *fmd;
3385 struct lvfs_run_ctxt saved;
3386 struct filter_obd *filter;
3387 struct ldlm_resource *res;
3388 struct dentry *dentry;
3389 __u64 opc = CAPA_OPC_META_WRITE;
3393 if (oa->o_valid & OBD_FL_TRUNC)
3394 opc |= CAPA_OPC_OSS_TRUNC;
3396 LASSERT(oa->o_valid & OBD_MD_FLGROUP);
3397 rc = filter_auth_capa(exp, NULL, oa->o_gr, capa, opc);
3401 if (oa->o_valid & (OBD_MD_FLUID | OBD_MD_FLGID)) {
3402 rc = filter_capa_fixoa(exp, oa, oa->o_gr, capa);
3407 osc_build_res_name(oa->o_id, oa->o_gr, &res_id);
3408 /* This would be very bad - accidentally truncating a file when
3409 * changing the time or similar - bug 12203. */
3410 if (oa->o_valid & OBD_MD_FLSIZE &&
3411 oinfo->oi_policy.l_extent.end != OBD_OBJECT_EOF) {
3412 static char mdsinum[48];
3414 if (oa->o_valid & OBD_MD_FLFID)
3415 snprintf(mdsinum, sizeof(mdsinum) - 1,
3416 " of inode "LPU64"/%u", oa->o_fid,
3421 CERROR("%s: setattr from %s trying to truncate objid "LPU64
3423 exp->exp_obd->obd_name, obd_export_nid2str(exp),
3428 dentry = __filter_oa2dentry(exp->exp_obd, oa, __FUNCTION__, 1);
3430 RETURN(PTR_ERR(dentry));
3432 filter = &exp->exp_obd->u.filter;
3433 push_ctxt(&saved, &exp->exp_obd->obd_lvfs_ctxt, NULL);
3436 * We need to be atomic against a concurrent write
3437 * (which takes the semaphore for reading). fmd_mactime_xid
3438 * checks will have no effect if a write request with lower
3439 * xid starts just before a setattr and finishes later than
3440 * the setattr (see bug 21489, comment 27).
3443 (OBD_MD_FLMTIME | OBD_MD_FLATIME | OBD_MD_FLCTIME)) {
3444 down_write(&dentry->d_inode->i_alloc_sem);
3445 fmd = filter_fmd_get(exp, oa->o_id, oa->o_gr);
3446 if (fmd && fmd->fmd_mactime_xid < oti->oti_xid)
3447 fmd->fmd_mactime_xid = oti->oti_xid;
3448 filter_fmd_put(exp, fmd);
3449 up_write(&dentry->d_inode->i_alloc_sem);
3452 /* setting objects attributes (including owner/group) */
3453 rc = filter_setattr_internal(exp, dentry, oa, oti);
3455 GOTO(out_unlock, rc);
3457 res = ldlm_resource_get(exp->exp_obd->obd_namespace, NULL,
3458 &res_id, LDLM_EXTENT, 0);
3461 LDLM_RESOURCE_ADDREF(res);
3462 rc = ldlm_res_lvbo_update(res, NULL, 0);
3463 LDLM_RESOURCE_DELREF(res);
3464 ldlm_resource_putref(res);
3467 oa->o_valid = OBD_MD_FLID;
3469 /* Quota release need uid/gid info */
3470 obdo_from_inode(oa, dentry->d_inode,
3471 FILTER_VALID_FLAGS | OBD_MD_FLUID | OBD_MD_FLGID);
3476 pop_ctxt(&saved, &exp->exp_obd->obd_lvfs_ctxt, NULL);
3480 /* XXX identical to osc_unpackmd */
3481 static int filter_unpackmd(struct obd_export *exp, struct lov_stripe_md **lsmp,
3482 struct lov_mds_md *lmm, int lmm_bytes)
3488 if (lmm_bytes < sizeof (*lmm)) {
3489 CERROR("lov_mds_md too small: %d, need %d\n",
3490 lmm_bytes, (int)sizeof(*lmm));
3493 /* XXX LOV_MAGIC etc check? */
3495 if (lmm->lmm_object_id == cpu_to_le64(0)) {
3496 CERROR("lov_mds_md: zero lmm_object_id\n");
3501 lsm_size = lov_stripe_md_size(1);
3505 if (*lsmp != NULL && lmm == NULL) {
3506 OBD_FREE((*lsmp)->lsm_oinfo[0], sizeof(struct lov_oinfo));
3507 OBD_FREE(*lsmp, lsm_size);
3512 if (*lsmp == NULL) {
3513 OBD_ALLOC(*lsmp, lsm_size);
3517 OBD_ALLOC((*lsmp)->lsm_oinfo[0], sizeof(struct lov_oinfo));
3518 if ((*lsmp)->lsm_oinfo[0] == NULL) {
3519 OBD_FREE(*lsmp, lsm_size);
3522 loi_init((*lsmp)->lsm_oinfo[0]);
3526 /* XXX zero *lsmp? */
3527 (*lsmp)->lsm_object_id = le64_to_cpu (lmm->lmm_object_id);
3528 LASSERT((*lsmp)->lsm_object_id);
3531 (*lsmp)->lsm_maxbytes = LUSTRE_STRIPE_MAXBYTES;
3536 /* caller must hold fo_create_locks[oa->o_gr] */
3537 static int filter_destroy_precreated(struct obd_export *exp, struct obdo *oa,
3538 struct filter_obd *filter)
3540 struct obdo doa = { 0 }; /* XXX obdo on stack */
3547 LASSERT_MDS_GROUP(oa->o_gr);
3548 LASSERT(oa->o_valid & OBD_MD_FLGROUP);
3549 LASSERT(down_trylock(&filter->fo_create_locks[oa->o_gr]) != 0);
3551 memset(&doa, 0, sizeof(doa));
3553 doa.o_valid |= OBD_MD_FLGROUP;
3554 doa.o_gr = oa->o_gr;
3555 doa.o_mode = S_IFREG;
3557 if (!cfs_test_bit(doa.o_gr, &filter->fo_destroys_in_progress)) {
3558 CERROR("%s:["LPU64"] destroys_in_progress already cleared\n",
3559 exp->exp_obd->obd_name, doa.o_gr);
3563 last = filter_last_id(filter, doa.o_gr);
3565 skip_orphan = !!(exp->exp_connect_flags & OBD_CONNECT_SKIP_ORPHAN);
3567 CDEBUG(D_HA, "%s: deleting orphan objects from "LPU64" to "LPU64"%s\n",
3568 exp->exp_obd->obd_name, oa->o_id + 1, last,
3569 skip_orphan ? ", orphan objids won't be reused any more." : ".");
3571 for (id = last; id > oa->o_id; id--) {
3573 rc = filter_destroy(exp, &doa, NULL, NULL, NULL, NULL);
3574 if (rc && rc != -ENOENT) /* this is pretty fatal... */
3575 CEMERG("error destroying precreate objid "LPU64": %d\n",
3578 /* update last_id on disk periodically so that if we restart
3579 * we don't need to re-scan all of the just-deleted objects. */
3580 if ((id & 511) == 0 && !skip_orphan) {
3581 filter_set_last_id(filter, id - 1, doa.o_gr);
3582 filter_update_last_objid(exp->exp_obd, doa.o_gr, 0);
3586 CDEBUG(D_HA, "%s: after destroy: set last_objids["LPU64"] = "LPU64"\n",
3587 exp->exp_obd->obd_name, doa.o_gr, oa->o_id);
3590 filter_set_last_id(filter, id, doa.o_gr);
3591 rc = filter_update_last_objid(exp->exp_obd, doa.o_gr, 1);
3593 /* don't reuse orphan object, return last used objid */
3597 cfs_clear_bit(doa.o_gr, &filter->fo_destroys_in_progress);
3602 static int filter_precreate(struct obd_device *obd, struct obdo *oa,
3603 obd_gr group, int *num);
3604 /* returns a negative error or a nonnegative number of files to create */
3605 static int filter_handle_precreate(struct obd_export *exp, struct obdo *oa,
3606 obd_gr group, struct obd_trans_info *oti)
3608 struct obd_device *obd = exp->exp_obd;
3609 struct filter_obd *filter = &obd->u.filter;
3613 /* delete orphans request */
3614 if ((oa->o_valid & OBD_MD_FLFLAGS) && (oa->o_flags & OBD_FL_DELORPHAN)){
3615 obd_id last = filter_last_id(filter, group);
3617 if (oti->oti_conn_cnt < exp->exp_conn_cnt) {
3618 CERROR("%s: dropping old orphan cleanup request\n",
3622 /* This causes inflight precreates to abort and drop lock */
3623 cfs_set_bit(group, &filter->fo_destroys_in_progress);
3624 cfs_down(&filter->fo_create_locks[group]);
3625 if (!cfs_test_bit(group, &filter->fo_destroys_in_progress)) {
3626 CERROR("%s:["LPU64"] destroys_in_progress already cleared\n",
3627 exp->exp_obd->obd_name, group);
3628 cfs_up(&filter->fo_create_locks[group]);
3631 diff = oa->o_id - last;
3632 CDEBUG(D_HA, "filter_last_id() = "LPU64" -> diff = %d\n",
3635 if (-diff > OST_MAX_PRECREATE) {
3636 CERROR("%s: ignoring bogus orphan destroy request: "
3637 "obdid "LPU64" last_id "LPU64"\n", obd->obd_name,
3639 /* FIXME: should reset precreate_next_id on MDS */
3640 GOTO(out, rc = -EINVAL);
3643 rc = filter_destroy_precreated(exp, oa, filter);
3645 CERROR("%s: unable to write lastobjid, but "
3646 "orphans were deleted\n", obd->obd_name);
3649 /* XXX: Used by MDS for the first time! */
3650 cfs_clear_bit(group, &filter->fo_destroys_in_progress);
3653 cfs_down(&filter->fo_create_locks[group]);
3654 if (oti->oti_conn_cnt < exp->exp_conn_cnt) {
3655 CERROR("%s: dropping old precreate request\n",
3659 /* only precreate if group == 0 and o_id is specfied */
3660 if (!filter_group_is_mds(group) || oa->o_id == 0)
3663 diff = oa->o_id - filter_last_id(filter, group);
3664 CDEBUG(D_RPCTRACE, "filter_last_id() = "LPU64" -> diff = %d\n",
3665 filter_last_id(filter, group), diff);
3667 LASSERTF(diff >= 0,"%s: "LPU64" - "LPU64" = %d\n",obd->obd_name,
3668 oa->o_id, filter_last_id(filter, group), diff);
3672 oa->o_id = filter_last_id(&obd->u.filter, group);
3673 rc = filter_precreate(obd, oa, group, &diff);
3674 oa->o_id = filter_last_id(&obd->u.filter, group);
3676 oa->o_valid = OBD_MD_FLID | OBD_MD_FLGROUP;
3679 /* else diff == 0 */
3682 cfs_up(&filter->fo_create_locks[group]);
3686 static int filter_statfs(struct obd_device *obd, struct obd_statfs *osfs,
3687 __u64 max_age, __u32 flags)
3689 struct filter_obd *filter = &obd->u.filter;
3690 int blockbits = obd->u.obt.obt_sb->s_blocksize_bits;
3694 /* at least try to account for cached pages. its still racey and
3695 * might be under-reporting if clients haven't announced their
3696 * caches with brw recently */
3697 cfs_spin_lock(&obd->obd_osfs_lock);
3698 rc = fsfilt_statfs(obd, obd->u.obt.obt_sb, max_age);
3699 memcpy(osfs, &obd->obd_osfs, sizeof(*osfs));
3700 cfs_spin_unlock(&obd->obd_osfs_lock);
3702 CDEBUG(D_SUPER | D_CACHE, "blocks cached "LPU64" granted "LPU64
3703 " pending "LPU64" free "LPU64" avail "LPU64"\n",
3704 filter->fo_tot_dirty, filter->fo_tot_granted,
3705 filter->fo_tot_pending,
3706 osfs->os_bfree << blockbits, osfs->os_bavail << blockbits);
3708 filter_grant_sanity_check(obd, __FUNCTION__);
3710 osfs->os_bavail -= min(osfs->os_bavail, GRANT_FOR_LLOG(obd) +
3711 ((filter->fo_tot_dirty + filter->fo_tot_pending +
3712 osfs->os_bsize - 1) >> blockbits));
3714 if (OBD_FAIL_CHECK(OBD_FAIL_OST_ENOSPC)) {
3715 struct lr_server_data *lsd = filter->fo_fsd;
3716 int index = le32_to_cpu(lsd->lsd_ost_index);
3718 if (obd_fail_val == -1 ||
3719 index == obd_fail_val)
3720 osfs->os_bfree = osfs->os_bavail = 2;
3721 else if (obd_fail_loc & OBD_FAIL_ONCE)
3722 obd_fail_loc &= ~OBD_FAILED; /* reset flag */
3725 /* set EROFS to state field if FS is mounted as RDONLY. The goal is to
3726 * stop creating files on MDS if OST is not good shape to create
3730 if (filter->fo_obt.obt_sb->s_flags & MS_RDONLY)
3731 osfs->os_state = OS_STATE_READONLY;
3733 if (filter->fo_raid_degraded)
3734 osfs->os_state |= OS_STATE_DEGRADED;
3738 static int filter_use_existing_obj(struct obd_device *obd,
3739 struct dentry *dchild, void **handle,
3742 struct inode *inode = dchild->d_inode;
3746 if ((inode->i_mode & (S_ISUID | S_ISGID)) == (S_ISUID|S_ISGID))
3749 *handle = fsfilt_start_log(obd, inode, FSFILT_OP_SETATTR, NULL, 1);
3750 if (IS_ERR(*handle))
3751 return PTR_ERR(*handle);
3753 iattr.ia_valid = ATTR_MODE;
3754 iattr.ia_mode = S_ISUID | S_ISGID |0666;
3755 rc = fsfilt_setattr(obd, dchild, *handle, &iattr, 1);
3762 static __u64 filter_calc_free_inodes(struct obd_device *obd)
3765 __u64 os_ffree = -1;
3767 cfs_spin_lock(&obd->obd_osfs_lock);
3768 rc = fsfilt_statfs(obd, obd->u.obt.obt_sb, cfs_time_shift_64(1));
3770 os_ffree = obd->obd_osfs.os_ffree;
3771 cfs_spin_unlock(&obd->obd_osfs_lock);
3776 /* We rely on the fact that only one thread will be creating files in a given
3777 * group at a time, which is why we don't need an atomic filter_get_new_id.
3778 * Even if we had that atomic function, the following race would exist:
3780 * thread 1: gets id x from filter_next_id
3781 * thread 2: gets id (x + 1) from filter_next_id
3782 * thread 2: creates object (x + 1)
3783 * thread 1: tries to create object x, gets -ENOSPC
3785 * Caller must hold fo_create_locks[group]
3787 static int filter_precreate(struct obd_device *obd, struct obdo *oa,
3788 obd_gr group, int *num)
3790 struct dentry *dchild = NULL, *dparent = NULL;
3791 struct filter_obd *filter;
3792 struct obd_statfs *osfs;
3793 int err = 0, rc = 0, recreate_obj = 0, i;
3794 cfs_time_t enough_time = cfs_time_shift(DISK_TIMEOUT/2);
3797 void *handle = NULL;
3800 filter = &obd->u.filter;
3802 LASSERT(down_trylock(&filter->fo_create_locks[group]) != 0);
3804 OBD_FAIL_TIMEOUT(OBD_FAIL_TGT_DELAY_PRECREATE, obd_timeout / 2);
3806 if ((oa->o_valid & OBD_MD_FLFLAGS) &&
3807 (oa->o_flags & OBD_FL_RECREATE_OBJS)) {
3810 OBD_ALLOC(osfs, sizeof(*osfs));
3813 rc = filter_statfs(obd, osfs, cfs_time_current_64() - CFS_HZ,
3815 if (rc == 0 && osfs->os_bavail < (osfs->os_blocks >> 10)) {
3816 CDEBUG(D_RPCTRACE,"%s: not enough space for create "
3817 LPU64"\n", obd->obd_name, osfs->os_bavail <<
3818 filter->fo_vfsmnt->mnt_sb->s_blocksize_bits);
3822 OBD_FREE(osfs, sizeof(*osfs));
3827 CDEBUG(D_RPCTRACE, "%s: precreating %d objects in group "LPU64
3828 " at "LPU64"\n", obd->obd_name, *num, group, oa->o_id);
3830 for (i = 0; i < *num && err == 0; i++) {
3831 int cleanup_phase = 0;
3833 if (cfs_test_bit(group, &filter->fo_destroys_in_progress)) {
3834 CWARN("%s: create aborted by destroy\n",
3843 last_id = filter_last_id(filter, group);
3844 if (next_id > last_id) {
3845 CERROR("Error: Trying to recreate obj greater"
3846 "than last id "LPD64" > "LPD64"\n",
3848 GOTO(cleanup, rc = -EINVAL);
3851 next_id = filter_last_id(filter, group) + 1;
3853 dparent = filter_parent_lock(obd, group, next_id);
3854 if (IS_ERR(dparent))
3855 GOTO(cleanup, rc = PTR_ERR(dparent));
3856 cleanup_phase = 1; /* filter_parent_unlock(dparent) */
3858 dchild = filter_fid2dentry(obd, dparent, group, next_id);
3860 GOTO(cleanup, rc = PTR_ERR(dchild));
3861 cleanup_phase = 2; /* f_dput(dchild) */
3863 if (dchild->d_inode != NULL) {
3864 /* This would only happen if lastobjid was bad on disk*/
3865 /* Could also happen if recreating missing obj but it
3866 * already exists. */
3868 CERROR("%s: recreating existing object %.*s?\n",
3869 obd->obd_name, dchild->d_name.len,
3870 dchild->d_name.name);
3872 /* Use these existing objects if they are
3874 if (dchild->d_inode->i_size == 0) {
3875 rc = filter_use_existing_obj(obd,dchild,
3876 &handle, &cleanup_phase);
3883 CERROR("%s: Serious error: objid %.*s already "
3884 "exists; is this filesystem corrupt?\n",
3885 obd->obd_name, dchild->d_name.len,
3886 dchild->d_name.name);
3889 GOTO(cleanup, rc = -EEXIST);
3892 handle = fsfilt_start_log(obd, dparent->d_inode,
3893 FSFILT_OP_CREATE, NULL, 1);
3895 GOTO(cleanup, rc = PTR_ERR(handle));
3898 CDEBUG(D_INODE, "%s: filter_precreate(od->o_gr="LPU64
3899 ",od->o_id="LPU64")\n", obd->obd_name, group,
3902 /* We mark object SUID+SGID to flag it for accepting UID+GID
3903 * from client on first write. Currently the permission bits
3904 * on the OST are never used, so this is OK. */
3905 rc = ll_vfs_create(dparent->d_inode, dchild,
3906 S_IFREG | S_ISUID | S_ISGID | 0666, NULL);
3908 CERROR("create failed rc = %d\n", rc);
3909 if (rc == -ENOSPC) {
3910 os_ffree = filter_calc_free_inodes(obd);
3912 CERROR("%s: free inode "LPU64"\n",
3913 obd->obd_name, os_ffree);
3918 if (dchild->d_inode)
3919 CDEBUG(D_INFO, "objid "LPU64" got inum %lu\n", next_id,
3920 dchild->d_inode->i_ino);
3923 if (!recreate_obj) {
3924 filter_set_last_id(filter, next_id, group);
3925 err = filter_update_last_objid(obd, group, 0);
3927 CERROR("unable to write lastobjid "
3928 "but file created\n");
3932 switch(cleanup_phase) {
3934 err = fsfilt_commit(obd, dparent->d_inode, handle, 0);
3936 CERROR("error on commit, err = %d\n", err);
3943 filter_parent_unlock(dparent);
3950 if (cfs_time_after(jiffies, enough_time)) {
3952 "%s: precreate slow - want %d got %d \n",
3953 obd->obd_name, *num, i);
3960 "%s: created %d objects for group "LPU64": "LPU64" rc %d\n",
3961 obd->obd_name, i, group, filter->fo_last_objids[group], rc);
3966 static int filter_create(struct obd_export *exp, struct obdo *oa,
3967 struct lov_stripe_md **ea, struct obd_trans_info *oti)
3969 struct obd_device *obd = exp->exp_obd;
3970 struct filter_export_data *fed;
3971 struct filter_obd *filter;
3972 struct lvfs_run_ctxt saved;
3973 struct lov_stripe_md *lsm = NULL;
3974 int rc = 0, diff, group = oa->o_gr;
3977 CDEBUG(D_INODE, "%s: filter_create(od->o_gr="LPU64",od->o_id="
3978 LPU64")\n", obd->obd_name, oa->o_gr, oa->o_id);
3980 if (!(oa->o_valid & OBD_MD_FLGROUP)) {
3981 CERROR("!!! nid %s sent invalid object group %d\n",
3982 obd_export_nid2str(exp), group);
3986 fed = &exp->exp_filter_data;
3987 filter = &obd->u.filter;
3989 if (fed->fed_group != group) {
3990 CERROR("!!! this export (nid %s) used object group %d "
3991 "earlier; now it's trying to use group %d! This could "
3992 "be a bug in the MDS. Please report to "
3993 "http://bugzilla.lustre.org/\n",
3994 obd_export_nid2str(exp), fed->fed_group, group);
4001 rc = obd_alloc_memmd(exp, &lsm);
4008 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
4010 if ((oa->o_valid & OBD_MD_FLFLAGS) &&
4011 (oa->o_flags & OBD_FL_RECREATE_OBJS)) {
4012 if (oa->o_id > filter_last_id(filter, oa->o_gr)) {
4013 CERROR("recreate objid "LPU64" > last id "LPU64"\n",
4014 oa->o_id, filter_last_id(filter,
4019 cfs_down(&filter->fo_create_locks[oa->o_gr]);
4020 rc = filter_precreate(obd, oa, oa->o_gr, &diff);
4021 cfs_up(&filter->fo_create_locks[oa->o_gr]);
4024 rc = filter_handle_precreate(exp, oa, oa->o_gr, oti);
4027 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
4028 if (rc && ea != NULL && *ea != lsm) {
4029 obd_free_memmd(exp, &lsm);
4030 } else if (rc == 0 && ea != NULL) {
4031 /* XXX LOV STACKING: the lsm that is passed to us from
4032 * LOV does not have valid lsm_oinfo data structs, so
4033 * don't go touching that. This needs to be fixed in a
4035 lsm->lsm_object_id = oa->o_id;
4042 int filter_destroy(struct obd_export *exp, struct obdo *oa,
4043 struct lov_stripe_md *md, struct obd_trans_info *oti,
4044 struct obd_export *md_exp, void *capa)
4046 unsigned int qcids[MAXQUOTAS] = {0, 0};
4047 struct obd_device *obd;
4048 struct filter_obd *filter;
4049 struct dentry *dchild = NULL, *dparent = NULL;
4050 struct lustre_handle lockh = { 0 };
4051 struct lvfs_run_ctxt saved;
4052 void *handle = NULL;
4053 struct llog_cookie *fcc = NULL;
4054 int rc, rc2, cleanup_phase = 0, sync = 0;
4058 LASSERT(oa->o_valid & OBD_MD_FLGROUP);
4059 rc = filter_auth_capa(exp, NULL, oa->o_gr,
4060 (struct lustre_capa *)capa, CAPA_OPC_OSS_DESTROY);
4065 filter = &obd->u.filter;
4067 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
4070 CDEBUG(D_INODE, "%s: filter_destroy(od->o_gr="LPU64",od->o_id="
4071 LPU64")\n", obd->obd_name, oa->o_gr, oa->o_id);
4073 dchild = filter_fid2dentry(obd, NULL, oa->o_gr, oa->o_id);
4075 GOTO(cleanup, rc = PTR_ERR(dchild));
4078 if (dchild->d_inode == NULL) {
4079 CDEBUG(D_INODE, "destroying non-existent object "LPU64"\n",
4081 /* If object already gone, cancel cookie right now */
4082 if (oa->o_valid & OBD_MD_FLCOOKIE) {
4083 struct llog_ctxt *ctxt;
4084 struct obd_llog_group *olg;
4086 olg = filter_find_olg(obd, oa->o_gr);
4088 CERROR(" %s: can not find olg of group %d\n",
4089 obd->obd_name, (int)oa->o_gr);
4090 GOTO(cleanup, rc = PTR_ERR(olg));
4092 fcc = &oa->o_lcookie;
4093 ctxt = llog_group_get_ctxt(olg, fcc->lgc_subsys + 1);
4094 llog_cancel(ctxt, NULL, 1, fcc, 0);
4095 llog_ctxt_put(ctxt);
4096 fcc = NULL; /* we didn't allocate fcc, don't free it */
4098 GOTO(cleanup, rc = -ENOENT);
4101 filter_prepare_destroy(obd, oa->o_id, oa->o_gr, &lockh);
4103 /* Our MDC connection is established by the MDS to us */
4104 if (oa->o_valid & OBD_MD_FLCOOKIE) {
4105 OBD_ALLOC(fcc, sizeof(*fcc));
4107 *fcc = oa->o_lcookie;
4109 DQUOT_INIT(dchild->d_inode);
4111 /* we're gonna truncate it first in order to avoid possible deadlock:
4113 * open trasaction open transaction
4114 * down(i_zombie) down(i_zombie)
4115 * restart transaction
4116 * (see BUG 4180) -bzzz
4118 * take i_alloc_sem too to prevent other threads from writing to the
4119 * file while we are truncating it. This can cause lock ordering issue
4120 * between page lock, i_mutex & starting new journal handle.
4121 * (see bug 20321) -johann
4123 down_write(&dchild->d_inode->i_alloc_sem);
4124 LOCK_INODE_MUTEX(dchild->d_inode);
4126 /* VBR: version recovery check */
4127 rc = filter_version_get_check(exp, oti, dchild->d_inode);
4129 UNLOCK_INODE_MUTEX(dchild->d_inode);
4130 up_write(&dchild->d_inode->i_alloc_sem);
4134 handle = fsfilt_start_log(obd, dchild->d_inode, FSFILT_OP_SETATTR,
4136 if (IS_ERR(handle)) {
4137 UNLOCK_INODE_MUTEX(dchild->d_inode);
4138 up_write(&dchild->d_inode->i_alloc_sem);
4139 GOTO(cleanup, rc = PTR_ERR(handle));
4142 iattr.ia_valid = ATTR_SIZE;
4144 rc = fsfilt_setattr(obd, dchild, handle, &iattr, 1);
4145 rc2 = fsfilt_commit(obd, dchild->d_inode, handle, 0);
4146 UNLOCK_INODE_MUTEX(dchild->d_inode);
4147 up_write(&dchild->d_inode->i_alloc_sem);
4151 GOTO(cleanup, rc = rc2);
4153 /* We don't actually need to lock the parent until we are unlinking
4154 * here, and not while truncating above. That avoids holding the
4155 * parent lock for a long time during truncate, which can block other
4156 * threads from doing anything to objects in that directory. bug 7171 */
4157 dparent = filter_parent_lock(obd, oa->o_gr, oa->o_id);
4158 if (IS_ERR(dparent))
4159 GOTO(cleanup, rc = PTR_ERR(dparent));
4160 cleanup_phase = 3; /* filter_parent_unlock */
4162 LOCK_INODE_MUTEX(dchild->d_inode);
4163 handle = fsfilt_start_log(obd, dparent->d_inode,FSFILT_OP_UNLINK,oti,1);
4164 if (IS_ERR(handle)) {
4165 UNLOCK_INODE_MUTEX(dchild->d_inode);
4166 GOTO(cleanup, rc = PTR_ERR(handle));
4168 cleanup_phase = 4; /* fsfilt_commit */
4170 /* Quota release need uid/gid of inode */
4171 obdo_from_inode(oa, dchild->d_inode, OBD_MD_FLUID|OBD_MD_FLGID);
4173 filter_fmd_drop(exp, oa->o_id, oa->o_gr);
4175 /* this drops dchild->d_inode->i_mutex unconditionally */
4176 rc = filter_destroy_internal(obd, oa->o_id, oa->o_gr, dparent, dchild);
4180 switch(cleanup_phase) {
4183 sync = fsfilt_add_journal_cb(obd, 0, oti ?
4184 oti->oti_handle : handle,
4185 filter_cancel_cookies_cb,
4187 /* If add_journal_cb failed, then filter_finish_transno
4188 * will commit the handle and we will do a sync
4189 * on commit. then we call callback directly to free
4192 rc = filter_finish_transno(exp, NULL, oti, rc, sync);
4194 filter_cancel_cookies_cb(obd, 0, fcc, rc);
4197 rc2 = fsfilt_commit(obd, dparent->d_inode, handle, 0);
4199 CERROR("error on commit, err = %d\n", rc2);
4206 filter_parent_unlock(dparent);
4208 filter_fini_destroy(obd, &lockh);
4212 OBD_FREE(fcc, sizeof(*fcc));
4214 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
4217 CERROR("invalid cleanup_phase %d\n", cleanup_phase);
4221 /* trigger quota release */
4222 qcids[USRQUOTA] = oa->o_uid;
4223 qcids[GRPQUOTA] = oa->o_gid;
4224 rc2 = lquota_adjust(filter_quota_interface_ref, obd, qcids, NULL, rc,
4227 CERROR("filter adjust qunit! (rc:%d)\n", rc2);
4231 /* NB start and end are used for punch, but not truncate */
4232 static int filter_truncate(struct obd_export *exp, struct obd_info *oinfo,
4233 struct obd_trans_info *oti,
4234 struct ptlrpc_request_set *rqset)
4239 if (oinfo->oi_policy.l_extent.end != OBD_OBJECT_EOF) {
4240 CERROR("PUNCH not supported, only truncate: end = "LPX64"\n",
4241 oinfo->oi_policy.l_extent.end);
4245 CDEBUG(D_INODE, "calling truncate for object "LPU64", valid = "LPX64
4246 ", o_size = "LPD64"\n", oinfo->oi_oa->o_id,
4247 oinfo->oi_oa->o_valid, oinfo->oi_policy.l_extent.start);
4249 oinfo->oi_oa->o_size = oinfo->oi_policy.l_extent.start;
4250 oinfo->oi_oa->o_valid |= OBD_FL_TRUNC;
4251 rc = filter_setattr(exp, oinfo, oti);
4252 oinfo->oi_oa->o_valid &= ~OBD_FL_TRUNC;
4256 static int filter_sync(struct obd_export *exp, struct obdo *oa,
4257 struct lov_stripe_md *lsm, obd_off start, obd_off end,
4260 struct lvfs_run_ctxt saved;
4261 struct filter_obd *filter;
4262 struct dentry *dentry;
4266 LASSERT(oa->o_valid & OBD_MD_FLGROUP);
4267 rc = filter_auth_capa(exp, NULL, oa->o_gr,
4268 (struct lustre_capa *)capa, CAPA_OPC_OSS_WRITE);
4272 filter = &exp->exp_obd->u.filter;
4274 /* An objid of zero is taken to mean "sync whole filesystem" */
4275 if (!oa || !(oa->o_valid & OBD_MD_FLID)) {
4276 rc = fsfilt_sync(exp->exp_obd, filter->fo_obt.obt_sb);
4277 /* Flush any remaining cancel messages out to the target */
4278 filter_sync_llogs(exp->exp_obd, exp);
4282 dentry = filter_oa2dentry(exp->exp_obd, oa);
4284 RETURN(PTR_ERR(dentry));
4286 push_ctxt(&saved, &exp->exp_obd->obd_lvfs_ctxt, NULL);
4288 LOCK_INODE_MUTEX(dentry->d_inode);
4290 rc = filemap_fdatawrite(dentry->d_inode->i_mapping);
4292 /* just any file to grab fsync method - "file" arg unused */
4293 struct file *file = filter->fo_rcvd_filp;
4295 if (file->f_op && file->f_op->fsync)
4296 rc = file->f_op->fsync(NULL, dentry, 1);
4298 rc2 = filemap_fdatawait(dentry->d_inode->i_mapping);
4302 UNLOCK_INODE_MUTEX(dentry->d_inode);
4304 oa->o_valid = OBD_MD_FLID;
4305 obdo_from_inode(oa, dentry->d_inode, FILTER_VALID_FLAGS);
4307 pop_ctxt(&saved, &exp->exp_obd->obd_lvfs_ctxt, NULL);
4313 static int filter_get_info(struct obd_export *exp, __u32 keylen,
4314 void *key, __u32 *vallen, void *val,
4315 struct lov_stripe_md *lsm)
4317 struct obd_device *obd;
4320 obd = class_exp2obd(exp);
4322 CDEBUG(D_IOCTL, "invalid client export %p\n", exp);
4326 if (KEY_IS(KEY_BLOCKSIZE)) {
4327 __u32 *blocksize = val;
4329 if (*vallen < sizeof(*blocksize))
4331 *blocksize = obd->u.obt.obt_sb->s_blocksize;
4333 *vallen = sizeof(*blocksize);
4337 if (KEY_IS(KEY_BLOCKSIZE_BITS)) {
4338 __u32 *blocksize_bits = val;
4339 if (blocksize_bits) {
4340 if (*vallen < sizeof(*blocksize_bits))
4342 *blocksize_bits = obd->u.obt.obt_sb->s_blocksize_bits;
4344 *vallen = sizeof(*blocksize_bits);
4348 if (KEY_IS(KEY_LAST_ID)) {
4349 obd_id *last_id = val;
4350 /* FIXME: object groups */
4352 if (*vallen < sizeof(*last_id))
4354 *last_id = filter_last_id(&obd->u.filter,
4355 exp->exp_filter_data.fed_group);
4357 *vallen = sizeof(*last_id);
4361 if (KEY_IS(KEY_FIEMAP)) {
4362 struct ll_fiemap_info_key *fm_key = key;
4363 struct dentry *dentry;
4364 struct ll_user_fiemap *fiemap = val;
4365 struct lvfs_run_ctxt saved;
4368 if (fiemap == NULL) {
4369 *vallen = fiemap_count_to_size(
4370 fm_key->fiemap.fm_extent_count);
4374 dentry = __filter_oa2dentry(exp->exp_obd, &fm_key->oa,
4377 RETURN(PTR_ERR(dentry));
4379 memcpy(fiemap, &fm_key->fiemap, sizeof(*fiemap));
4380 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
4381 rc = fsfilt_iocontrol(obd, dentry, FSFILT_IOC_FIEMAP,
4383 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
4389 CDEBUG(D_IOCTL, "invalid key\n");
4393 static inline int filter_setup_llog_group(struct obd_export *exp,
4394 struct obd_device *obd,
4397 struct obd_llog_group *olg;
4398 struct llog_ctxt *ctxt;
4401 olg = filter_find_create_olg(obd, group);
4403 RETURN(PTR_ERR(olg));
4405 llog_group_set_export(olg, exp);
4407 ctxt = llog_group_get_ctxt(olg, LLOG_MDS_OST_REPL_CTXT);
4408 LASSERTF(ctxt != NULL, "ctxt is null\n");
4410 rc = llog_receptor_accept(ctxt, exp->exp_imp_reverse);
4411 llog_ctxt_put(ctxt);
4415 static int filter_set_grant_shrink(struct obd_export *exp,
4416 struct ost_body *body)
4418 /* handle shrink grant */
4419 cfs_spin_lock(&exp->exp_obd->obd_osfs_lock);
4420 filter_grant_incoming(exp, &body->oa);
4421 cfs_spin_unlock(&exp->exp_obd->obd_osfs_lock);
4427 static int filter_set_mds_conn(struct obd_export *exp, void *val)
4429 struct obd_device *obd;
4435 CDEBUG(D_IOCTL, "invalid export %p\n", exp);
4439 LCONSOLE_WARN("%s: received MDS connection from %s\n", obd->obd_name,
4440 obd_export_nid2str(exp));
4441 obd->u.filter.fo_mdc_conn.cookie = exp->exp_handle.h_cookie;
4443 /* setup llog imports */
4445 group = (int)(*(__u32 *)val);
4447 group = 0; /* default value */
4449 LASSERT_MDS_GROUP(group);
4450 rc = filter_setup_llog_group(exp, obd, group);
4454 if (group == FILTER_GROUP_MDS0) {
4455 /* setup llog group 1 for interop */
4456 filter_setup_llog_group(exp, obd, FILTER_GROUP_LLOG);
4459 lquota_setinfo(filter_quota_interface_ref, obd, exp);
4464 static int filter_set_info_async(struct obd_export *exp, __u32 keylen,
4465 void *key, __u32 vallen, void *val,
4466 struct ptlrpc_request_set *set)
4468 struct obd_device *obd;
4473 CDEBUG(D_IOCTL, "invalid export %p\n", exp);
4477 if (KEY_IS(KEY_CAPA_KEY)) {
4479 rc = filter_update_capa_key(obd, (struct lustre_capa_key *)val);
4481 CERROR("filter update capability key failed: %d\n", rc);
4485 if (KEY_IS(KEY_REVIMP_UPD)) {
4486 filter_revimp_update(exp);
4487 lquota_clearinfo(filter_quota_interface_ref, exp, exp->exp_obd);
4491 if (KEY_IS(KEY_SPTLRPC_CONF)) {
4492 filter_adapt_sptlrpc_conf(obd, 0);
4496 if (KEY_IS(KEY_MDS_CONN))
4497 RETURN(filter_set_mds_conn(exp, val));
4499 if (KEY_IS(KEY_GRANT_SHRINK))
4500 RETURN(filter_set_grant_shrink(exp, val));
4505 int filter_iocontrol(unsigned int cmd, struct obd_export *exp,
4506 int len, void *karg, void *uarg)
4508 struct obd_device *obd = exp->exp_obd;
4509 struct obd_ioctl_data *data = karg;
4513 case OBD_IOC_ABORT_RECOVERY: {
4514 LCONSOLE_WARN("%s: Aborting recovery.\n", obd->obd_name);
4515 target_stop_recovery_thread(obd);
4519 case OBD_IOC_SYNC: {
4520 CDEBUG(D_RPCTRACE, "syncing ost %s\n", obd->obd_name);
4521 rc = fsfilt_sync(obd, obd->u.obt.obt_sb);
4525 case OBD_IOC_SET_READONLY: {
4527 struct super_block *sb = obd->u.obt.obt_sb;
4528 struct inode *inode = sb->s_root->d_inode;
4529 BDEVNAME_DECLARE_STORAGE(tmp);
4530 CERROR("*** setting device %s read-only ***\n",
4531 ll_bdevname(sb, tmp));
4533 handle = fsfilt_start(obd, inode, FSFILT_OP_MKNOD, NULL);
4534 if (!IS_ERR(handle))
4535 rc = fsfilt_commit(obd, inode, handle, 1);
4537 CDEBUG(D_HA, "syncing ost %s\n", obd->obd_name);
4538 rc = fsfilt_sync(obd, obd->u.obt.obt_sb);
4540 lvfs_set_rdonly(obd, obd->u.obt.obt_sb);
4544 case OBD_IOC_CATLOGLIST: {
4545 rc = llog_catalog_list(obd, 1, data);
4549 case OBD_IOC_LLOG_CANCEL:
4550 case OBD_IOC_LLOG_REMOVE:
4551 case OBD_IOC_LLOG_INFO:
4552 case OBD_IOC_LLOG_PRINT: {
4553 /* FIXME to be finished */
4554 RETURN(-EOPNOTSUPP);
4556 struct llog_ctxt *ctxt = NULL;
4558 push_ctxt(&saved, &ctxt->loc_exp->exp_obd->obd_lvfs_ctxt, NULL);
4559 rc = llog_ioctl(ctxt, cmd, data);
4560 pop_ctxt(&saved, &ctxt->loc_exp->exp_obd->obd_lvfs_ctxt, NULL);
4573 static int filter_health_check(struct obd_device *obd)
4575 #ifdef USE_HEALTH_CHECK_WRITE
4576 struct filter_obd *filter = &obd->u.filter;
4581 * health_check to return 0 on healthy
4582 * and 1 on unhealthy.
4584 if (obd->u.obt.obt_sb->s_flags & MS_RDONLY)
4587 #ifdef USE_HEALTH_CHECK_WRITE
4588 LASSERT(filter->fo_obt.obt_health_check_filp != NULL);
4589 rc |= !!lvfs_check_io_health(obd, filter->fo_obt.obt_health_check_filp);
4594 static struct dentry *filter_lvfs_fid2dentry(__u64 id, __u32 gen, __u64 gr,
4597 return filter_fid2dentry(data, NULL, gr, id);
4600 static int filter_process_config(struct obd_device *obd, obd_count len,
4603 struct lustre_cfg *lcfg = buf;
4604 struct lprocfs_static_vars lvars;
4607 switch (lcfg->lcfg_command) {
4609 lprocfs_filter_init_vars(&lvars);
4611 rc = class_process_proc_param(PARAM_OST, lvars.obd_vars,
4621 static struct lvfs_callback_ops filter_lvfs_ops = {
4622 l_fid2dentry: filter_lvfs_fid2dentry,
4625 static struct obd_ops filter_obd_ops = {
4626 .o_owner = THIS_MODULE,
4627 .o_get_info = filter_get_info,
4628 .o_set_info_async = filter_set_info_async,
4629 .o_setup = filter_setup,
4630 .o_precleanup = filter_precleanup,
4631 .o_cleanup = filter_cleanup,
4632 .o_connect = filter_connect,
4633 .o_reconnect = filter_reconnect,
4634 .o_disconnect = filter_disconnect,
4635 .o_ping = filter_ping,
4636 .o_init_export = filter_init_export,
4637 .o_destroy_export = filter_destroy_export,
4638 .o_statfs = filter_statfs,
4639 .o_getattr = filter_getattr,
4640 .o_unpackmd = filter_unpackmd,
4641 .o_create = filter_create,
4642 .o_setattr = filter_setattr,
4643 .o_destroy = filter_destroy,
4644 .o_brw = filter_brw,
4645 .o_punch = filter_truncate,
4646 .o_sync = filter_sync,
4647 .o_preprw = filter_preprw,
4648 .o_commitrw = filter_commitrw,
4649 .o_llog_init = filter_llog_init,
4650 .o_llog_connect = filter_llog_connect,
4651 .o_llog_finish = filter_llog_finish,
4652 .o_iocontrol = filter_iocontrol,
4653 .o_health_check = filter_health_check,
4654 .o_process_config = filter_process_config,
4657 quota_interface_t *filter_quota_interface_ref;
4658 extern quota_interface_t filter_quota_interface;
4660 static int __init obdfilter_init(void)
4662 struct lprocfs_static_vars lvars;
4665 /** sanity check for group<->mdsno conversion */
4666 for (i = 0; i < 32; i++)
4667 LASSERT(objgrp_to_mdsno(mdt_to_obd_objgrp(i)) == i);
4669 lprocfs_filter_init_vars(&lvars);
4671 cfs_request_module("%s", "lquota");
4672 OBD_ALLOC(obdfilter_created_scratchpad,
4673 OBDFILTER_CREATED_SCRATCHPAD_ENTRIES *
4674 sizeof(*obdfilter_created_scratchpad));
4675 if (obdfilter_created_scratchpad == NULL)
4678 ll_fmd_cachep = cfs_mem_cache_create("ll_fmd_cache",
4679 sizeof(struct filter_mod_data),
4682 GOTO(out, rc = -ENOMEM);
4684 filter_quota_interface_ref = PORTAL_SYMBOL_GET(filter_quota_interface);
4685 init_obd_quota_ops(filter_quota_interface_ref, &filter_obd_ops);
4687 rc = class_register_type(&filter_obd_ops, NULL, lvars.module_vars,
4688 LUSTRE_OST_NAME, NULL);
4692 err = cfs_mem_cache_destroy(ll_fmd_cachep);
4693 LASSERTF(err == 0, "Cannot destroy ll_fmd_cachep: rc %d\n",err);
4694 ll_fmd_cachep = NULL;
4696 if (filter_quota_interface_ref)
4697 PORTAL_SYMBOL_PUT(filter_quota_interface);
4699 OBD_FREE(obdfilter_created_scratchpad,
4700 OBDFILTER_CREATED_SCRATCHPAD_ENTRIES *
4701 sizeof(*obdfilter_created_scratchpad));
4707 static void __exit obdfilter_exit(void)
4709 if (filter_quota_interface_ref)
4710 PORTAL_SYMBOL_PUT(filter_quota_interface);
4712 if (ll_fmd_cachep) {
4713 int rc = cfs_mem_cache_destroy(ll_fmd_cachep);
4714 LASSERTF(rc == 0, "Cannot destroy ll_fmd_cachep: rc %d\n", rc);
4715 ll_fmd_cachep = NULL;
4718 class_unregister_type(LUSTRE_OST_NAME);
4719 OBD_FREE(obdfilter_created_scratchpad,
4720 OBDFILTER_CREATED_SCRATCHPAD_ENTRIES *
4721 sizeof(*obdfilter_created_scratchpad));
4724 MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
4725 MODULE_DESCRIPTION("Lustre Filtering OBD driver");
4726 MODULE_LICENSE("GPL");
4728 module_init(obdfilter_init);
4729 module_exit(obdfilter_exit);