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 /* Group 0 is no longer a legal group, to catch uninitialized IDs */
83 #define FILTER_MIN_GROUPS FILTER_GROUP_MDS0
84 static struct lvfs_callback_ops filter_lvfs_ops;
85 cfs_mem_cache_t *ll_fmd_cachep;
87 static void filter_commit_cb(struct obd_device *obd, __u64 transno,
88 void *cb_data, int error)
90 obd_transno_commit_cb(obd, transno, error);
93 /* Assumes caller has already pushed us into the kernel context. */
94 int filter_finish_transno(struct obd_export *exp, struct obd_trans_info *oti,
95 int rc, int force_sync)
97 struct filter_obd *filter = &exp->exp_obd->u.filter;
98 struct filter_export_data *fed = &exp->exp_filter_data;
99 struct lsd_client_data *lcd = fed->fed_lcd;
102 int err, log_pri = D_RPCTRACE;
104 /* Propagate error code. */
108 if (!exp->exp_obd->obd_replayable || oti == NULL)
111 /* we don't allocate new transnos for replayed requests */
112 if (oti->oti_transno == 0) {
113 spin_lock(&filter->fo_translock);
114 last_rcvd = le64_to_cpu(filter->fo_fsd->lsd_last_transno) + 1;
115 filter->fo_fsd->lsd_last_transno = cpu_to_le64(last_rcvd);
116 spin_unlock(&filter->fo_translock);
117 oti->oti_transno = last_rcvd;
119 spin_lock(&filter->fo_translock);
120 last_rcvd = oti->oti_transno;
121 if (last_rcvd > le64_to_cpu(filter->fo_fsd->lsd_last_transno))
122 filter->fo_fsd->lsd_last_transno =
123 cpu_to_le64(last_rcvd);
124 spin_unlock(&filter->fo_translock);
126 lcd->lcd_last_transno = cpu_to_le64(last_rcvd);
128 /* could get xid from oti, if it's ever needed */
129 lcd->lcd_last_xid = 0;
131 off = fed->fed_lr_off;
133 CERROR("%s: client idx %d is %lld\n", exp->exp_obd->obd_name,
134 fed->fed_lr_idx, fed->fed_lr_off);
138 force_sync = fsfilt_add_journal_cb(exp->exp_obd,
144 err = fsfilt_write_record(exp->exp_obd, filter->fo_rcvd_filp,
145 lcd, sizeof(*lcd), &off,
146 force_sync | exp->exp_need_sync);
148 filter_commit_cb(exp->exp_obd, last_rcvd, NULL, err);
156 CDEBUG(log_pri, "wrote trans "LPU64" for client %s at #%d: err = %d\n",
157 last_rcvd, lcd->lcd_uuid, fed->fed_lr_idx, err);
162 void f_dput(struct dentry *dentry)
164 /* Can't go inside filter_ddelete because it can block */
165 CDEBUG(D_INODE, "putting %s: %p, count = %d\n",
166 dentry->d_name.name, dentry, atomic_read(&dentry->d_count) - 1);
167 LASSERT(atomic_read(&dentry->d_count) > 0);
172 static void init_brw_stats(struct brw_stats *brw_stats)
175 for (i = 0; i < BRW_LAST; i++)
176 spin_lock_init(&brw_stats->hist[i].oh_lock);
179 static int lprocfs_init_rw_stats(struct obd_device *obd,
180 struct lprocfs_stats **stats)
184 num_stats = (sizeof(*obd->obd_type->typ_dt_ops) / sizeof(void *)) +
185 LPROC_FILTER_LAST - 1;
186 *stats = lprocfs_alloc_stats(num_stats, 0);
190 lprocfs_init_ops_stats(LPROC_FILTER_LAST, *stats);
191 lprocfs_counter_init(*stats, LPROC_FILTER_READ_BYTES,
192 LPROCFS_CNTR_AVGMINMAX, "read_bytes", "bytes");
193 lprocfs_counter_init(*stats, LPROC_FILTER_WRITE_BYTES,
194 LPROCFS_CNTR_AVGMINMAX, "write_bytes", "bytes");
199 /* brw_stats are 2128, ops are 3916, ldlm are 204, so 6248 bytes per client,
200 plus the procfs overhead :( */
201 static int filter_export_stats_init(struct obd_device *obd,
202 struct obd_export *exp,
205 struct filter_export_data *fed = &exp->exp_filter_data;
209 init_brw_stats(&fed->fed_brw_stats);
211 if (obd_uuid_equals(&exp->exp_client_uuid, &obd->obd_uuid))
212 /* Self-export gets no proc entry */
215 rc = lprocfs_exp_setup(exp, client_nid, &newnid);
220 struct nid_stat *tmp = exp->exp_nid_stats;
221 LASSERT(tmp != NULL);
223 OBD_ALLOC(tmp->nid_brw_stats, sizeof(struct brw_stats));
224 if (tmp->nid_brw_stats == NULL)
227 init_brw_stats(tmp->nid_brw_stats);
228 rc = lprocfs_seq_create(exp->exp_nid_stats->nid_proc, "brw_stats",
229 0644, &filter_per_nid_stats_fops,
232 CWARN("Error adding the brw_stats file\n");
234 rc = lprocfs_init_rw_stats(obd, &exp->exp_nid_stats->nid_stats);
238 rc = lprocfs_register_stats(tmp->nid_proc, "stats",
247 /* Add client data to the FILTER. We use a bitmap to locate a free space
248 * in the last_rcvd file if cl_idx is -1 (i.e. a new client).
249 * Otherwise, we have just read the data from the last_rcvd file and
250 * we know its offset. */
251 static int filter_client_add(struct obd_device *obd, struct obd_export *exp,
254 struct filter_obd *filter = &obd->u.filter;
255 struct filter_export_data *fed = &exp->exp_filter_data;
256 unsigned long *bitmap = filter->fo_last_rcvd_slots;
257 int new_client = (cl_idx == -1);
261 LASSERT(bitmap != NULL);
262 LASSERTF(cl_idx > -2, "%d\n", cl_idx);
265 if (strcmp(fed->fed_lcd->lcd_uuid, obd->obd_uuid.uuid) == 0)
268 /* the bitmap operations can handle cl_idx > sizeof(long) * 8, so
269 * there's no need for extra complication here
272 cl_idx = find_first_zero_bit(bitmap, LR_MAX_CLIENTS);
274 if (cl_idx >= LR_MAX_CLIENTS) {
275 CERROR("no room for %u client - fix LR_MAX_CLIENTS\n",
279 if (test_and_set_bit(cl_idx, bitmap)) {
280 cl_idx = find_next_zero_bit(bitmap, LR_MAX_CLIENTS,
285 if (test_and_set_bit(cl_idx, bitmap)) {
286 CERROR("FILTER client %d: bit already set in bitmap!\n",
292 fed->fed_lr_idx = cl_idx;
293 fed->fed_lr_off = le32_to_cpu(filter->fo_fsd->lsd_client_start) +
294 cl_idx * le16_to_cpu(filter->fo_fsd->lsd_client_size);
295 LASSERTF(fed->fed_lr_off > 0, "fed_lr_off = %llu\n", fed->fed_lr_off);
297 CDEBUG(D_INFO, "client at index %d (%llu) with UUID '%s' added\n",
298 fed->fed_lr_idx, fed->fed_lr_off, fed->fed_lcd->lcd_uuid);
301 struct lvfs_run_ctxt saved;
302 loff_t off = fed->fed_lr_off;
306 CDEBUG(D_INFO, "writing client lcd at idx %u (%llu) (len %u)\n",
307 fed->fed_lr_idx,off,(unsigned int)sizeof(*fed->fed_lcd));
309 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
310 /* Transaction needed to fix bug 1403 */
311 handle = fsfilt_start(obd,
312 filter->fo_rcvd_filp->f_dentry->d_inode,
313 FSFILT_OP_SETATTR, NULL);
314 if (IS_ERR(handle)) {
315 rc = PTR_ERR(handle);
316 CERROR("unable to start transaction: rc %d\n", rc);
318 rc = fsfilt_add_journal_cb(obd, 0, handle,
319 target_client_add_cb, exp);
321 spin_lock(&exp->exp_lock);
322 exp->exp_need_sync = 1;
323 spin_unlock(&exp->exp_lock);
325 rc = fsfilt_write_record(obd, filter->fo_rcvd_filp,
327 sizeof(*fed->fed_lcd),
328 &off, rc /* sync if no cb */);
330 filter->fo_rcvd_filp->f_dentry->d_inode,
333 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
336 CERROR("error writing %s client idx %u: rc %d\n",
337 LAST_RCVD, fed->fed_lr_idx, rc);
344 static int filter_client_free(struct obd_export *exp)
346 struct filter_export_data *fed = &exp->exp_filter_data;
347 struct filter_obd *filter = &exp->exp_obd->u.filter;
348 struct obd_device *obd = exp->exp_obd;
349 struct lsd_client_data zero_lcd;
350 struct lvfs_run_ctxt saved;
355 if (fed->fed_lcd == NULL)
358 /* XXX if lcd_uuid were a real obd_uuid, I could use obd_uuid_equals */
359 if (strcmp(fed->fed_lcd->lcd_uuid, obd->obd_uuid.uuid ) == 0)
362 CDEBUG(D_INFO, "freeing client at idx %u, offset %lld with UUID '%s'\n",
363 fed->fed_lr_idx, fed->fed_lr_off, fed->fed_lcd->lcd_uuid);
365 LASSERT(filter->fo_last_rcvd_slots != NULL);
367 off = fed->fed_lr_off;
369 /* Don't clear fed_lr_idx here as it is likely also unset. At worst
370 * we leak a client slot that will be cleaned on the next recovery. */
372 CERROR("%s: client idx %d has med_off %lld\n",
373 obd->obd_name, fed->fed_lr_idx, off);
374 GOTO(free, rc = -EINVAL);
377 /* Clear the bit _after_ zeroing out the client so we don't
378 race with filter_client_add and zero out new clients.*/
379 if (!test_bit(fed->fed_lr_idx, filter->fo_last_rcvd_slots)) {
380 CERROR("FILTER client %u: bit already clear in bitmap!!\n",
385 if (!(exp->exp_flags & OBD_OPT_FAILOVER)) {
386 memset(&zero_lcd, 0, sizeof zero_lcd);
387 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
388 rc = fsfilt_write_record(obd, filter->fo_rcvd_filp, &zero_lcd,
389 sizeof(zero_lcd), &off,
390 (!exp->exp_libclient ||
391 exp->exp_need_sync));
393 /* update server's transno */
394 filter_update_server_data(obd, filter->fo_rcvd_filp,
396 !exp->exp_libclient);
397 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
399 CDEBUG(rc == 0 ? D_INFO : D_ERROR,
400 "zeroing out client %s at idx %u (%llu) in %s rc %d\n",
401 fed->fed_lcd->lcd_uuid, fed->fed_lr_idx, fed->fed_lr_off,
405 if (!test_and_clear_bit(fed->fed_lr_idx, filter->fo_last_rcvd_slots)) {
406 CERROR("FILTER client %u: bit already clear in bitmap!!\n",
413 OBD_FREE_PTR(fed->fed_lcd);
419 /* drop fmd reference, free it if last ref. must be called with fed_lock held.*/
420 static inline void filter_fmd_put_nolock(struct filter_export_data *fed,
421 struct filter_mod_data *fmd)
423 LASSERT_SPIN_LOCKED(&fed->fed_lock);
424 if (--fmd->fmd_refcount == 0) {
425 /* XXX when we have persistent reservations and the handle
426 * is stored herein we need to drop it here. */
427 fed->fed_mod_count--;
428 list_del(&fmd->fmd_list);
429 OBD_SLAB_FREE(fmd, ll_fmd_cachep, sizeof(*fmd));
433 /* drop fmd reference, free it if last ref */
434 void filter_fmd_put(struct obd_export *exp, struct filter_mod_data *fmd)
436 struct filter_export_data *fed;
441 fed = &exp->exp_filter_data;
442 spin_lock(&fed->fed_lock);
443 filter_fmd_put_nolock(fed, fmd); /* caller reference */
444 spin_unlock(&fed->fed_lock);
447 /* expire entries from the end of the list if there are too many
448 * or they are too old */
449 static void filter_fmd_expire_nolock(struct filter_obd *filter,
450 struct filter_export_data *fed,
451 struct filter_mod_data *keep)
453 struct filter_mod_data *fmd, *tmp;
455 list_for_each_entry_safe(fmd, tmp, &fed->fed_mod_list, fmd_list) {
459 if (time_before(jiffies, fmd->fmd_expire) &&
460 fed->fed_mod_count < filter->fo_fmd_max_num)
463 list_del_init(&fmd->fmd_list);
464 filter_fmd_put_nolock(fed, fmd); /* list reference */
468 void filter_fmd_expire(struct obd_export *exp)
470 spin_lock(&exp->exp_filter_data.fed_lock);
471 filter_fmd_expire_nolock(&exp->exp_obd->u.filter,
472 &exp->exp_filter_data, NULL);
473 spin_unlock(&exp->exp_filter_data.fed_lock);
476 /* find specified objid, group in export fmd list.
477 * caller must hold fed_lock and take fmd reference itself */
478 static struct filter_mod_data *filter_fmd_find_nolock(struct filter_obd *filter,
479 struct filter_export_data *fed,
480 obd_id objid, obd_gr group)
482 struct filter_mod_data *found = NULL, *fmd;
484 LASSERT_SPIN_LOCKED(&fed->fed_lock);
486 list_for_each_entry_reverse(fmd, &fed->fed_mod_list, fmd_list) {
487 if (fmd->fmd_id == objid && fmd->fmd_gr == group) {
489 list_del(&fmd->fmd_list);
490 list_add_tail(&fmd->fmd_list, &fed->fed_mod_list);
491 fmd->fmd_expire = jiffies + filter->fo_fmd_max_age;
496 filter_fmd_expire_nolock(filter, fed, found);
501 /* Find fmd based on objid and group, or return NULL if not found. */
502 struct filter_mod_data *filter_fmd_find(struct obd_export *exp,
503 obd_id objid, obd_gr group)
505 struct filter_mod_data *fmd;
507 spin_lock(&exp->exp_filter_data.fed_lock);
508 fmd = filter_fmd_find_nolock(&exp->exp_obd->u.filter,
509 &exp->exp_filter_data, objid, group);
511 fmd->fmd_refcount++; /* caller reference */
512 spin_unlock(&exp->exp_filter_data.fed_lock);
517 /* Find fmd based on objid and group, or create a new one if none is found.
518 * It is possible for this function to return NULL under memory pressure,
519 * or if objid = 0 is passed (which will only cause old entries to expire).
520 * Currently this is not fatal because any fmd state is transient and
521 * may also be freed when it gets sufficiently old. */
522 struct filter_mod_data *filter_fmd_get(struct obd_export *exp,
523 obd_id objid, obd_gr group)
525 struct filter_export_data *fed = &exp->exp_filter_data;
526 struct filter_mod_data *found = NULL, *fmd_new = NULL;
528 OBD_SLAB_ALLOC(fmd_new, ll_fmd_cachep, CFS_ALLOC_IO, sizeof(*fmd_new));
530 spin_lock(&fed->fed_lock);
531 found = filter_fmd_find_nolock(&exp->exp_obd->u.filter,fed,objid,group);
534 list_add_tail(&fmd_new->fmd_list, &fed->fed_mod_list);
535 fmd_new->fmd_id = objid;
536 fmd_new->fmd_gr = group;
537 fmd_new->fmd_refcount++; /* list reference */
539 fed->fed_mod_count++;
541 OBD_SLAB_FREE(fmd_new, ll_fmd_cachep, sizeof(*fmd_new));
545 found->fmd_refcount++; /* caller reference */
546 found->fmd_expire = jiffies +
547 exp->exp_obd->u.filter.fo_fmd_max_age;
550 spin_unlock(&fed->fed_lock);
556 /* drop fmd list reference so it will disappear when last reference is put.
557 * This isn't so critical because it would in fact only affect the one client
558 * that is doing the unlink and at worst we have an stale entry referencing
559 * an object that should never be used again. */
560 static void filter_fmd_drop(struct obd_export *exp, obd_id objid, obd_gr group)
562 struct filter_mod_data *found = NULL;
564 spin_lock(&exp->exp_filter_data.fed_lock);
565 found = filter_fmd_find_nolock(&exp->exp_filter_data, objid, group);
567 list_del_init(&found->fmd_list);
568 filter_fmd_put_nolock(&exp->exp_filter_data, found);
570 spin_unlock(&exp->exp_filter_data.fed_lock);
573 #define filter_fmd_drop(exp, objid, group)
576 /* remove all entries from fmd list */
577 static void filter_fmd_cleanup(struct obd_export *exp)
579 struct filter_export_data *fed = &exp->exp_filter_data;
580 struct filter_mod_data *fmd = NULL, *tmp;
582 spin_lock(&fed->fed_lock);
583 list_for_each_entry_safe(fmd, tmp, &fed->fed_mod_list, fmd_list) {
584 list_del_init(&fmd->fmd_list);
585 filter_fmd_put_nolock(fed, fmd);
587 spin_unlock(&fed->fed_lock);
590 static int filter_init_export(struct obd_export *exp)
592 spin_lock_init(&exp->exp_filter_data.fed_lock);
593 CFS_INIT_LIST_HEAD(&exp->exp_filter_data.fed_mod_list);
595 spin_lock(&exp->exp_lock);
596 exp->exp_connecting = 1;
597 spin_unlock(&exp->exp_lock);
599 return ldlm_init_export(exp);
602 static int filter_free_server_data(struct filter_obd *filter)
604 OBD_FREE(filter->fo_fsd, sizeof(*filter->fo_fsd));
605 filter->fo_fsd = NULL;
606 OBD_FREE(filter->fo_last_rcvd_slots, LR_MAX_CLIENTS / 8);
607 filter->fo_last_rcvd_slots = NULL;
611 /* assumes caller is already in kernel ctxt */
612 int filter_update_server_data(struct obd_device *obd, struct file *filp,
613 struct lr_server_data *fsd, int force_sync)
619 CDEBUG(D_INODE, "server uuid : %s\n", fsd->lsd_uuid);
620 CDEBUG(D_INODE, "server last_rcvd : "LPU64"\n",
621 le64_to_cpu(fsd->lsd_last_transno));
622 CDEBUG(D_INODE, "server last_mount: "LPU64"\n",
623 le64_to_cpu(fsd->lsd_mount_count));
625 fsd->lsd_compat14 = fsd->lsd_last_transno;
626 rc = fsfilt_write_record(obd, filp, fsd, sizeof(*fsd), &off, force_sync);
628 CERROR("error writing lr_server_data: rc = %d\n", rc);
633 int filter_update_last_objid(struct obd_device *obd, obd_gr group,
636 struct filter_obd *filter = &obd->u.filter;
642 if (filter->fo_last_objid_files[group] == NULL) {
643 CERROR("Object group "LPU64" not fully setup; not updating "
644 "last_objid\n", group);
648 CDEBUG(D_INODE, "%s: server last_objid for group "LPU64": "LPU64"\n",
649 obd->obd_name, group, filter->fo_last_objids[group]);
651 tmp = cpu_to_le64(filter->fo_last_objids[group]);
652 rc = fsfilt_write_record(obd, filter->fo_last_objid_files[group],
653 &tmp, sizeof(tmp), &off, force_sync);
655 CERROR("error writing group "LPU64" last objid: rc = %d\n",
659 extern int ost_handle(struct ptlrpc_request *req);
660 /* assumes caller has already in kernel ctxt */
661 static int filter_init_server_data(struct obd_device *obd, struct file * filp)
663 struct filter_obd *filter = &obd->u.filter;
664 struct lr_server_data *fsd;
665 struct lsd_client_data *lcd = NULL;
666 struct inode *inode = filp->f_dentry->d_inode;
667 unsigned long last_rcvd_size = i_size_read(inode);
673 /* ensure padding in the struct is the correct size */
674 CLASSERT (offsetof(struct lr_server_data, lsd_padding) +
675 sizeof(fsd->lsd_padding) == LR_SERVER_SIZE);
676 CLASSERT (offsetof(struct lsd_client_data, lcd_padding) +
677 sizeof(lcd->lcd_padding) == LR_CLIENT_SIZE);
679 OBD_ALLOC(fsd, sizeof(*fsd));
682 filter->fo_fsd = fsd;
684 OBD_ALLOC(filter->fo_last_rcvd_slots, LR_MAX_CLIENTS / 8);
685 if (filter->fo_last_rcvd_slots == NULL) {
686 OBD_FREE(fsd, sizeof(*fsd));
690 if (last_rcvd_size == 0) {
691 LCONSOLE_WARN("%s: new disk, initializing\n", obd->obd_name);
693 memcpy(fsd->lsd_uuid, obd->obd_uuid.uuid,sizeof(fsd->lsd_uuid));
694 fsd->lsd_last_transno = 0;
695 mount_count = fsd->lsd_mount_count = 0;
696 fsd->lsd_server_size = cpu_to_le32(LR_SERVER_SIZE);
697 fsd->lsd_client_start = cpu_to_le32(LR_CLIENT_START);
698 fsd->lsd_client_size = cpu_to_le16(LR_CLIENT_SIZE);
699 fsd->lsd_subdir_count = cpu_to_le16(FILTER_SUBDIR_COUNT);
700 filter->fo_subdir_count = FILTER_SUBDIR_COUNT;
701 fsd->lsd_feature_incompat = cpu_to_le32(OBD_INCOMPAT_OST);
703 rc = fsfilt_read_record(obd, filp, fsd, sizeof(*fsd), &off);
705 CDEBUG(D_INODE,"OBD filter: error reading %s: rc %d\n",
709 if (strcmp(fsd->lsd_uuid, obd->obd_uuid.uuid) != 0) {
710 LCONSOLE_ERROR_MSG(0x134, "Trying to start OBD %s "
711 "using the wrong disk %s. Were the "
712 "/dev/ assignments rearranged?\n",
713 obd->obd_uuid.uuid, fsd->lsd_uuid);
714 GOTO(err_fsd, rc = -EINVAL);
716 mount_count = le64_to_cpu(fsd->lsd_mount_count);
717 filter->fo_subdir_count = le16_to_cpu(fsd->lsd_subdir_count);
719 /* Assume old last_rcvd format unless I_C_LR is set */
720 if (!(fsd->lsd_feature_incompat &
721 cpu_to_le32(OBD_INCOMPAT_COMMON_LR)))
722 fsd->lsd_last_transno = fsd->lsd_compat14;
726 if (fsd->lsd_feature_incompat & ~cpu_to_le32(FILTER_INCOMPAT_SUPP)) {
727 CERROR("%s: unsupported incompat filesystem feature(s) %x\n",
728 obd->obd_name, le32_to_cpu(fsd->lsd_feature_incompat) &
729 ~FILTER_INCOMPAT_SUPP);
730 GOTO(err_fsd, rc = -EINVAL);
732 if (fsd->lsd_feature_rocompat & ~cpu_to_le32(FILTER_ROCOMPAT_SUPP)) {
733 CERROR("%s: unsupported read-only filesystem feature(s) %x\n",
734 obd->obd_name, le32_to_cpu(fsd->lsd_feature_rocompat) &
735 ~FILTER_ROCOMPAT_SUPP);
736 /* Do something like remount filesystem read-only */
737 GOTO(err_fsd, rc = -EINVAL);
740 CDEBUG(D_INODE, "%s: server last_transno : "LPU64"\n",
741 obd->obd_name, le64_to_cpu(fsd->lsd_last_transno));
742 CDEBUG(D_INODE, "%s: server mount_count: "LPU64"\n",
743 obd->obd_name, mount_count + 1);
744 CDEBUG(D_INODE, "%s: server data size: %u\n",
745 obd->obd_name, le32_to_cpu(fsd->lsd_server_size));
746 CDEBUG(D_INODE, "%s: per-client data start: %u\n",
747 obd->obd_name, le32_to_cpu(fsd->lsd_client_start));
748 CDEBUG(D_INODE, "%s: per-client data size: %u\n",
749 obd->obd_name, le32_to_cpu(fsd->lsd_client_size));
750 CDEBUG(D_INODE, "%s: server subdir_count: %u\n",
751 obd->obd_name, le16_to_cpu(fsd->lsd_subdir_count));
752 CDEBUG(D_INODE, "%s: last_rcvd clients: %lu\n", obd->obd_name,
753 last_rcvd_size <= le32_to_cpu(fsd->lsd_client_start) ? 0 :
754 (last_rcvd_size - le32_to_cpu(fsd->lsd_client_start)) /
755 le16_to_cpu(fsd->lsd_client_size));
757 if (!obd->obd_replayable) {
758 CWARN("%s: recovery support OFF\n", obd->obd_name);
762 for (cl_idx = 0, off = le32_to_cpu(fsd->lsd_client_start);
763 off < last_rcvd_size; cl_idx++) {
765 struct obd_export *exp;
766 struct filter_export_data *fed;
771 GOTO(err_client, rc = -ENOMEM);
774 /* Don't assume off is incremented properly by
775 * fsfilt_read_record(), in case sizeof(*lcd)
776 * isn't the same as fsd->lsd_client_size. */
777 off = le32_to_cpu(fsd->lsd_client_start) +
778 cl_idx * le16_to_cpu(fsd->lsd_client_size);
779 rc = fsfilt_read_record(obd, filp, lcd, sizeof(*lcd), &off);
781 CERROR("error reading FILT %s idx %d off %llu: rc %d\n",
782 LAST_RCVD, cl_idx, off, rc);
783 break; /* read error shouldn't cause startup to fail */
786 if (lcd->lcd_uuid[0] == '\0') {
787 CDEBUG(D_INFO, "skipping zeroed client at offset %d\n",
792 last_rcvd = le64_to_cpu(lcd->lcd_last_transno);
794 /* These exports are cleaned up by filter_disconnect(), so they
795 * need to be set up like real exports as filter_connect() does.
797 exp = class_new_export(obd, (struct obd_uuid *)lcd->lcd_uuid);
799 CDEBUG(D_HA, "RCVRNG CLIENT uuid: %s idx: %d lr: "LPU64
800 " srv lr: "LPU64"\n", lcd->lcd_uuid, cl_idx,
801 last_rcvd, le64_to_cpu(fsd->lsd_last_transno));
803 if (PTR_ERR(exp) == -EALREADY) {
804 /* export already exists, zero out this one */
805 CERROR("Zeroing out duplicate export due to "
807 lcd->lcd_uuid[0] = '\0';
809 GOTO(err_client, rc = PTR_ERR(exp));
812 fed = &exp->exp_filter_data;
814 fed->fed_group = 0; /* will be assigned at connect */
815 filter_export_stats_init(obd, exp, NULL);
816 rc = filter_client_add(obd, exp, cl_idx);
817 /* can't fail for existing client */
818 LASSERTF(rc == 0, "rc = %d\n", rc);
821 spin_lock(&exp->exp_lock);
822 exp->exp_connecting = 0;
823 exp->exp_in_recovery = 0;
824 spin_unlock(&exp->exp_lock);
825 obd->obd_max_recoverable_clients++;
826 class_export_put(exp);
829 /* Need to check last_rcvd even for duplicated exports. */
830 CDEBUG(D_OTHER, "client at idx %d has last_rcvd = "LPU64"\n",
833 if (last_rcvd > le64_to_cpu(fsd->lsd_last_transno))
834 fsd->lsd_last_transno = cpu_to_le64(last_rcvd);
840 obd->obd_last_committed = le64_to_cpu(fsd->lsd_last_transno);
842 target_recovery_init(obd, ost_handle);
845 filter->fo_mount_count = mount_count + 1;
846 fsd->lsd_mount_count = cpu_to_le64(filter->fo_mount_count);
848 /* save it, so mount count and last_transno is current */
849 rc = filter_update_server_data(obd, filp, filter->fo_fsd, 1);
851 GOTO(err_client, rc);
856 target_recovery_fini(obd);
858 filter_free_server_data(filter);
862 static int filter_cleanup_groups(struct obd_device *obd)
864 struct filter_obd *filter = &obd->u.filter;
866 struct dentry *dentry;
870 if (filter->fo_dentry_O_groups != NULL) {
871 for (i = 0; i < filter->fo_group_count; i++) {
872 dentry = filter->fo_dentry_O_groups[i];
876 OBD_FREE(filter->fo_dentry_O_groups,
877 filter->fo_group_count *
878 sizeof(*filter->fo_dentry_O_groups));
879 filter->fo_dentry_O_groups = NULL;
881 if (filter->fo_last_objid_files != NULL) {
882 for (i = 0; i < filter->fo_group_count; i++) {
883 filp = filter->fo_last_objid_files[i];
887 OBD_FREE(filter->fo_last_objid_files,
888 filter->fo_group_count *
889 sizeof(*filter->fo_last_objid_files));
890 filter->fo_last_objid_files = NULL;
892 if (filter->fo_dentry_O_sub != NULL) {
893 for (i = 0; i < filter->fo_group_count; i++) {
894 for (j = 0; j < filter->fo_subdir_count; j++) {
895 dentry = filter->fo_dentry_O_sub[i].dentry[j];
900 OBD_FREE(filter->fo_dentry_O_sub,
901 filter->fo_group_count *
902 sizeof(*filter->fo_dentry_O_sub));
903 filter->fo_dentry_O_sub = NULL;
905 if (filter->fo_last_objids != NULL) {
906 OBD_FREE(filter->fo_last_objids,
907 filter->fo_group_count *
908 sizeof(*filter->fo_last_objids));
909 filter->fo_last_objids = NULL;
911 if (filter->fo_dentry_O != NULL) {
912 f_dput(filter->fo_dentry_O);
913 filter->fo_dentry_O = NULL;
918 static int filter_update_last_group(struct obd_device *obd, int group)
920 struct filter_obd *filter = &obd->u.filter;
921 struct file *filp = NULL;
922 int last_group = 0, rc;
926 if (group <= filter->fo_committed_group)
929 filp = filp_open("LAST_GROUP", O_RDWR, 0700);
933 CERROR("cannot open LAST_GROUP: rc = %d\n", rc);
937 rc = fsfilt_read_record(obd, filp, &last_group, sizeof(__u32), &off);
939 CDEBUG(D_INODE, "error reading LAST_GROUP: rc %d\n",rc);
942 LASSERT(off == 0 || last_group >= FILTER_MIN_GROUPS);
943 CDEBUG(D_INODE, "%s: previous %d, new %d\n",
944 obd->obd_name, last_group, group);
948 /* must be sync: bXXXX */
949 rc = fsfilt_write_record(obd, filp, &last_group, sizeof(__u32), &off, 1);
951 CDEBUG(D_INODE, "error updating LAST_GROUP: rc %d\n", rc);
955 filter->fo_committed_group = group;
962 static int filter_read_group_internal(struct obd_device *obd, int group,
965 struct filter_obd *filter = &obd->u.filter;
966 __u64 *new_objids = NULL;
967 struct filter_subdirs *new_subdirs = NULL, *tmp_subdirs = NULL;
968 struct dentry **new_groups = NULL;
969 struct file **new_files = NULL;
970 struct dentry *dentry;
972 int old_count = filter->fo_group_count, rc, stage = 0, i;
978 snprintf(name, 24, "%d", group);
982 dentry = ll_lookup_one_len(name, filter->fo_dentry_O,
984 if (IS_ERR(dentry)) {
985 CERROR("Cannot lookup expected object group %d: %ld\n",
986 group, PTR_ERR(dentry));
987 RETURN(PTR_ERR(dentry));
990 dentry = simple_mkdir(filter->fo_dentry_O, filter->fo_vfsmnt,
992 if (IS_ERR(dentry)) {
993 CERROR("cannot lookup/create O/%s: rc = %ld\n", name,
995 RETURN(PTR_ERR(dentry));
1000 snprintf(name, 24, "O/%d/LAST_ID", group);
1002 filp = filp_open(name, O_CREAT | O_RDWR, 0700);
1004 CERROR("cannot create %s: rc = %ld\n", name, PTR_ERR(filp));
1005 GOTO(cleanup, rc = PTR_ERR(filp));
1009 rc = fsfilt_read_record(obd, filp, &last_objid, sizeof(__u64), &off);
1011 CDEBUG(D_INODE, "error reading %s: rc %d\n", name, rc);
1015 if (filter->fo_subdir_count) {
1016 OBD_ALLOC(tmp_subdirs, sizeof(*tmp_subdirs));
1017 if (tmp_subdirs == NULL)
1018 GOTO(cleanup, rc = -ENOMEM);
1021 for (i = 0; i < filter->fo_subdir_count; i++) {
1023 snprintf(dir, sizeof(dir), "d%u", i);
1025 tmp_subdirs->dentry[i] = simple_mkdir(dentry,
1028 if (IS_ERR(tmp_subdirs->dentry[i])) {
1029 rc = PTR_ERR(tmp_subdirs->dentry[i]);
1030 CERROR("can't lookup/create O/%d/%s: rc = %d\n",
1035 CDEBUG(D_INODE, "got/created O/%d/%s: %p\n", group, dir,
1036 tmp_subdirs->dentry[i]);
1040 /* 'group' is an index; we need an array of length 'group + 1' */
1041 if (group + 1 > old_count) {
1042 OBD_ALLOC(new_objids, len * sizeof(*new_objids));
1043 OBD_ALLOC(new_subdirs, len * sizeof(*new_subdirs));
1044 OBD_ALLOC(new_groups, len * sizeof(*new_groups));
1045 OBD_ALLOC(new_files, len * sizeof(*new_files));
1047 if (new_objids == NULL || new_subdirs == NULL ||
1048 new_groups == NULL || new_files == NULL)
1049 GOTO(cleanup, rc = -ENOMEM);
1052 memcpy(new_objids, filter->fo_last_objids,
1053 old_count * sizeof(*new_objids));
1054 memcpy(new_subdirs, filter->fo_dentry_O_sub,
1055 old_count * sizeof(*new_subdirs));
1056 memcpy(new_groups, filter->fo_dentry_O_groups,
1057 old_count * sizeof(*new_groups));
1058 memcpy(new_files, filter->fo_last_objid_files,
1059 old_count * sizeof(*new_files));
1061 OBD_FREE(filter->fo_last_objids,
1062 old_count * sizeof(*new_objids));
1063 OBD_FREE(filter->fo_dentry_O_sub,
1064 old_count * sizeof(*new_subdirs));
1065 OBD_FREE(filter->fo_dentry_O_groups,
1066 old_count * sizeof(*new_groups));
1067 OBD_FREE(filter->fo_last_objid_files,
1068 old_count * sizeof(*new_files));
1070 filter->fo_last_objids = new_objids;
1071 filter->fo_dentry_O_sub = new_subdirs;
1072 filter->fo_dentry_O_groups = new_groups;
1073 filter->fo_last_objid_files = new_files;
1074 filter->fo_group_count = len;
1077 filter->fo_dentry_O_groups[group] = dentry;
1078 filter->fo_last_objid_files[group] = filp;
1079 if (filter->fo_subdir_count) {
1080 filter->fo_dentry_O_sub[group] = *tmp_subdirs;
1081 OBD_FREE(tmp_subdirs, sizeof(*tmp_subdirs));
1084 filter_update_last_group(obd, group);
1086 if (i_size_read(filp->f_dentry->d_inode) == 0) {
1087 filter->fo_last_objids[group] = FILTER_INIT_OBJID;
1088 rc = filter_update_last_objid(obd, group, 1);
1092 filter->fo_last_objids[group] = le64_to_cpu(last_objid);
1093 CDEBUG(D_INODE, "%s: server last_objid group %d: "LPU64"\n",
1094 obd->obd_name, group, last_objid);
1099 if (new_objids != NULL)
1100 OBD_FREE(new_objids, len * sizeof(*new_objids));
1101 if (new_subdirs != NULL)
1102 OBD_FREE(new_subdirs, len * sizeof(*new_subdirs));
1103 if (new_groups != NULL)
1104 OBD_FREE(new_groups, len * sizeof(*new_groups));
1105 if (new_files != NULL)
1106 OBD_FREE(new_files, len * sizeof(*new_files));
1108 if (filter->fo_subdir_count) {
1109 for (i = 0; i < filter->fo_subdir_count; i++) {
1110 if (tmp_subdirs->dentry[i] != NULL)
1111 dput(tmp_subdirs->dentry[i]);
1113 OBD_FREE(tmp_subdirs, sizeof(*tmp_subdirs));
1116 filp_close(filp, 0);
1123 static int filter_read_groups(struct obd_device *obd, int last_group,
1126 struct filter_obd *filter = &obd->u.filter;
1127 int old_count, group, rc = 0;
1129 down(&filter->fo_init_lock);
1130 old_count = filter->fo_group_count;
1131 for (group = old_count; group <= last_group; group++) {
1133 continue; /* no group zero */
1135 rc = filter_read_group_internal(obd, group, create);
1139 up(&filter->fo_init_lock);
1143 /* FIXME: object groups */
1144 static int filter_prep_groups(struct obd_device *obd)
1146 struct filter_obd *filter = &obd->u.filter;
1147 struct dentry *dentry, *O_dentry;
1149 int last_group, rc = 0, cleanup_phase = 0;
1153 O_dentry = simple_mkdir(current->fs->pwd, filter->fo_vfsmnt,
1155 CDEBUG(D_INODE, "got/created O: %p\n", O_dentry);
1156 if (IS_ERR(O_dentry)) {
1157 rc = PTR_ERR(O_dentry);
1158 CERROR("cannot open/create O: rc = %d\n", rc);
1161 filter->fo_dentry_O = O_dentry;
1162 cleanup_phase = 1; /* O_dentry */
1164 /* Lookup "R" to tell if we're on an old OST FS and need to convert
1165 * from O/R/<dir>/<objid> to O/0/<dir>/<objid>. This can be removed
1166 * some time post 1.0 when all old-style OSTs have converted along
1167 * with the init_objid hack. */
1168 dentry = ll_lookup_one_len("R", O_dentry, 1);
1170 GOTO(cleanup, rc = PTR_ERR(dentry));
1171 if (dentry->d_inode && S_ISDIR(dentry->d_inode->i_mode)) {
1172 struct dentry *O0_dentry = lookup_one_len("0", O_dentry, 1);
1175 CWARN("converting OST to new object layout\n");
1176 if (IS_ERR(O0_dentry)) {
1177 rc = PTR_ERR(O0_dentry);
1178 CERROR("error looking up O/0: rc %d\n", rc);
1179 GOTO(cleanup_R, rc);
1182 if (O0_dentry->d_inode) {
1183 CERROR("Both O/R and O/0 exist. Fix manually.\n");
1184 GOTO(cleanup_O0, rc = -EEXIST);
1187 LOCK_INODE_MUTEX(O_dentry->d_inode);
1188 rc = ll_vfs_rename(O_dentry->d_inode, dentry, filter->fo_vfsmnt,
1189 O_dentry->d_inode, O0_dentry,
1191 UNLOCK_INODE_MUTEX(O_dentry->d_inode);
1194 CERROR("error renaming O/R to O/0: rc %d\n", rc);
1195 GOTO(cleanup_O0, rc);
1197 filter->fo_fsd->lsd_feature_incompat |=
1198 cpu_to_le32(OBD_INCOMPAT_GROUPS);
1199 rc = filter_update_server_data(obd, filter->fo_rcvd_filp,
1201 GOTO(cleanup_O0, rc);
1213 cleanup_phase = 2; /* groups */
1215 /* we have to initialize all groups before first connections from
1216 * clients because they may send create/destroy for any group -bzzz */
1217 filp = filp_open("LAST_GROUP", O_CREAT | O_RDWR, 0700);
1219 CERROR("cannot create LAST_GROUP: rc = %ld\n", PTR_ERR(filp));
1220 GOTO(cleanup, rc = PTR_ERR(filp));
1222 cleanup_phase = 3; /* filp */
1224 rc = fsfilt_read_record(obd, filp, &last_group, sizeof(__u32), &off);
1226 CDEBUG(D_INODE, "error reading LAST_GROUP: rc %d\n", rc);
1230 last_group = FILTER_MIN_GROUPS;
1232 LASSERT(last_group >= FILTER_MIN_GROUPS);
1235 CWARN("%s: initialize groups [%d,%d]\n", obd->obd_name,
1236 FILTER_MIN_GROUPS, last_group);
1237 filter->fo_committed_group = last_group;
1238 rc = filter_read_groups(obd, last_group, 1);
1242 filp_close(filp, 0);
1246 switch (cleanup_phase) {
1248 filp_close(filp, 0);
1250 filter_cleanup_groups(obd);
1252 f_dput(filter->fo_dentry_O);
1253 filter->fo_dentry_O = NULL;
1261 /* setup the object store with correct subdirectories */
1262 static int filter_prep(struct obd_device *obd)
1264 struct lvfs_run_ctxt saved;
1265 struct filter_obd *filter = &obd->u.filter;
1267 struct inode *inode;
1271 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
1272 file = filp_open(LAST_RCVD, O_RDWR | O_CREAT | O_LARGEFILE, 0700);
1273 if (!file || IS_ERR(file)) {
1275 CERROR("OBD filter: cannot open/create %s: rc = %d\n",
1279 filter->fo_rcvd_filp = file;
1280 if (!S_ISREG(file->f_dentry->d_inode->i_mode)) {
1281 CERROR("%s is not a regular file!: mode = %o\n", LAST_RCVD,
1282 file->f_dentry->d_inode->i_mode);
1283 GOTO(err_filp, rc = -ENOENT);
1286 inode = file->f_dentry->d_parent->d_inode;
1287 /* We use i_op->unlink directly in filter_vfs_unlink() */
1288 if (!inode->i_op || !inode->i_op->create || !inode->i_op->unlink) {
1289 CERROR("%s: filesystem does not support create/unlink ops\n",
1291 GOTO(err_filp, rc = -EOPNOTSUPP);
1294 rc = filter_init_server_data(obd, file);
1296 CERROR("cannot read %s: rc = %d\n", LAST_RCVD, rc);
1299 /* open and create health check io file*/
1300 file = filp_open(HEALTH_CHECK, O_RDWR | O_CREAT, 0644);
1303 CERROR("OBD filter: cannot open/create %s rc = %d\n",
1305 GOTO(err_server_data, rc);
1307 filter->fo_health_check_filp = file;
1308 if (!S_ISREG(file->f_dentry->d_inode->i_mode)) {
1309 CERROR("%s is not a regular file!: mode = %o\n", HEALTH_CHECK,
1310 file->f_dentry->d_inode->i_mode);
1311 GOTO(err_health_check, rc = -ENOENT);
1313 rc = lvfs_check_io_health(obd, file);
1315 GOTO(err_health_check, rc);
1317 rc = filter_prep_groups(obd);
1319 GOTO(err_health_check, rc);
1321 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
1326 if (filp_close(filter->fo_health_check_filp, 0))
1327 CERROR("can't close %s after error\n", HEALTH_CHECK);
1328 filter->fo_health_check_filp = NULL;
1330 target_recovery_fini(obd);
1331 filter_free_server_data(filter);
1333 if (filp_close(filter->fo_rcvd_filp, 0))
1334 CERROR("can't close %s after error\n", LAST_RCVD);
1335 filter->fo_rcvd_filp = NULL;
1339 /* cleanup the filter: write last used object id to status file */
1340 static void filter_post(struct obd_device *obd)
1342 struct lvfs_run_ctxt saved;
1343 struct filter_obd *filter = &obd->u.filter;
1346 /* XXX: filter_update_lastobjid used to call fsync_dev. It might be
1347 * best to start a transaction with h_sync, because we removed this
1350 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
1351 rc = filter_update_server_data(obd, filter->fo_rcvd_filp,
1354 CERROR("error writing server data: rc = %d\n", rc);
1356 for (i = 1; i < filter->fo_group_count; i++) {
1357 rc = filter_update_last_objid(obd, i,
1358 (i == filter->fo_group_count - 1));
1360 CERROR("error writing group %d lastobjid: rc = %d\n",
1364 rc = filp_close(filter->fo_rcvd_filp, 0);
1365 filter->fo_rcvd_filp = NULL;
1367 CERROR("error closing %s: rc = %d\n", LAST_RCVD, rc);
1369 rc = filp_close(filter->fo_health_check_filp, 0);
1370 filter->fo_health_check_filp = NULL;
1372 CERROR("error closing %s: rc = %d\n", HEALTH_CHECK, rc);
1374 filter_cleanup_groups(obd);
1375 filter_free_server_data(filter);
1376 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
1378 filter_free_capa_keys(filter);
1379 cleanup_capa_hash(filter->fo_capa_hash);
1382 static void filter_set_last_id(struct filter_obd *filter,
1383 obd_id id, obd_gr group)
1385 LASSERT(filter->fo_fsd != NULL);
1386 LASSERT(group <= filter->fo_group_count);
1388 spin_lock(&filter->fo_objidlock);
1389 filter->fo_last_objids[group] = id;
1390 spin_unlock(&filter->fo_objidlock);
1393 obd_id filter_last_id(struct filter_obd *filter, obd_gr group)
1396 LASSERT(filter->fo_fsd != NULL);
1397 LASSERT(group <= filter->fo_group_count);
1399 /* FIXME: object groups */
1400 spin_lock(&filter->fo_objidlock);
1401 id = filter->fo_last_objids[group];
1402 spin_unlock(&filter->fo_objidlock);
1407 static int filter_lock_dentry(struct obd_device *obd, struct dentry *dparent)
1409 LOCK_INODE_MUTEX(dparent->d_inode);
1413 /* We never dget the object parent, so DON'T dput it either */
1414 struct dentry *filter_parent(struct obd_device *obd, obd_gr group, obd_id objid)
1416 struct filter_obd *filter = &obd->u.filter;
1417 struct filter_subdirs *subdirs;
1418 LASSERT(group < filter->fo_group_count); /* FIXME: object groups */
1420 if (group > 0 || filter->fo_subdir_count == 0)
1421 return filter->fo_dentry_O_groups[group];
1423 subdirs = &filter->fo_dentry_O_sub[group];
1424 return subdirs->dentry[objid & (filter->fo_subdir_count - 1)];
1427 /* We never dget the object parent, so DON'T dput it either */
1428 struct dentry *filter_parent_lock(struct obd_device *obd, obd_gr group,
1431 unsigned long now = jiffies;
1432 struct dentry *dparent = filter_parent(obd, group, objid);
1435 if (IS_ERR(dparent))
1437 if (dparent == NULL)
1438 return ERR_PTR(-ENOENT);
1440 rc = filter_lock_dentry(obd, dparent);
1441 fsfilt_check_slow(obd, now, "parent lock");
1442 return rc ? ERR_PTR(rc) : dparent;
1445 /* We never dget the object parent, so DON'T dput it either */
1446 static void filter_parent_unlock(struct dentry *dparent)
1448 UNLOCK_INODE_MUTEX(dparent->d_inode);
1451 /* How to get files, dentries, inodes from object id's.
1453 * If dir_dentry is passed, the caller has already locked the parent
1454 * appropriately for this operation (normally a write lock). If
1455 * dir_dentry is NULL, we do a read lock while we do the lookup to
1456 * avoid races with create/destroy and such changing the directory
1457 * internal to the filesystem code. */
1458 struct dentry *filter_fid2dentry(struct obd_device *obd,
1459 struct dentry *dir_dentry,
1460 obd_gr group, obd_id id)
1462 struct dentry *dparent = dir_dentry;
1463 struct dentry *dchild;
1468 if (OBD_FAIL_CHECK(OBD_FAIL_OST_ENOENT) &&
1469 obd->u.filter.fo_destroys_in_progress == 0) {
1470 /* don't fail lookups for orphan recovery, it causes
1471 * later LBUGs when objects still exist during precreate */
1472 CDEBUG(D_INFO, "*** obd_fail_loc=%x ***\n",OBD_FAIL_OST_ENOENT);
1473 RETURN(ERR_PTR(-ENOENT));
1476 CERROR("fatal: invalid object id 0\n");
1477 RETURN(ERR_PTR(-ESTALE));
1480 len = sprintf(name, LPU64, id);
1481 if (dir_dentry == NULL) {
1482 dparent = filter_parent_lock(obd, group, id);
1483 if (IS_ERR(dparent)) {
1484 CERROR("%s: error getting object "LPU64":"LPU64
1485 " parent: rc %ld\n", obd->obd_name,
1486 id, group, PTR_ERR(dparent));
1490 CDEBUG(D_INODE, "looking up object O/%.*s/%s\n",
1491 dparent->d_name.len, dparent->d_name.name, name);
1492 dchild = /*ll_*/lookup_one_len(name, dparent, len);
1493 if (dir_dentry == NULL)
1494 filter_parent_unlock(dparent);
1495 if (IS_ERR(dchild)) {
1496 CERROR("%s: child lookup error %ld\n", obd->obd_name,
1501 if (dchild->d_inode != NULL && is_bad_inode(dchild->d_inode)) {
1502 CERROR("%s: got bad object "LPU64" inode %lu\n",
1503 obd->obd_name, id, dchild->d_inode->i_ino);
1505 RETURN(ERR_PTR(-ENOENT));
1508 CDEBUG(D_INODE, "got child objid %s: %p, count = %d\n",
1509 name, dchild, atomic_read(&dchild->d_count));
1511 LASSERT(atomic_read(&dchild->d_count) > 0);
1516 static int filter_prepare_destroy(struct obd_device *obd, obd_id objid,
1519 struct lustre_handle lockh;
1520 int flags = LDLM_AST_DISCARD_DATA, rc;
1521 struct ldlm_res_id res_id;
1522 ldlm_policy_data_t policy = { .l_extent = { 0, OBD_OBJECT_EOF } };
1525 osc_build_res_name(objid, group, &res_id);
1526 /* Tell the clients that the object is gone now and that they should
1527 * throw away any cached pages. */
1528 rc = ldlm_cli_enqueue_local(obd->obd_namespace, &res_id, LDLM_EXTENT,
1529 &policy, LCK_PW, &flags, ldlm_blocking_ast,
1530 ldlm_completion_ast, NULL, NULL, 0, NULL,
1533 /* We only care about the side-effects, just drop the lock. */
1535 ldlm_lock_decref(&lockh, LCK_PW);
1540 /* This is vfs_unlink() without down(i_sem). If we call regular vfs_unlink()
1541 * we have 2.6 lock ordering issues with filter_commitrw_write() as it takes
1542 * i_sem before starting a handle, while filter_destroy() + vfs_unlink do the
1543 * reverse. Caller must take i_sem before starting the transaction and we
1544 * drop it here before the inode is removed from the dentry. bug 4180/6984 */
1545 int filter_vfs_unlink(struct inode *dir, struct dentry *dentry,
1546 struct vfsmount *mnt)
1551 /* don't need dir->i_zombie for 2.4, it is for rename/unlink of dir
1552 * itself we already hold dir->i_mutex for child create/unlink ops */
1553 LASSERT(dentry->d_inode != NULL);
1554 LASSERT(TRYLOCK_INODE_MUTEX(dir) == 0);
1555 LASSERT(TRYLOCK_INODE_MUTEX(dentry->d_inode) == 0);
1559 if (/*!dentry->d_inode ||*/dentry->d_parent->d_inode != dir)
1560 GOTO(out, rc = -ENOENT);
1562 rc = ll_permission(dir, MAY_WRITE | MAY_EXEC, NULL);
1567 GOTO(out, rc = -EPERM);
1569 /* check_sticky() */
1570 if ((dentry->d_inode->i_uid != current->fsuid &&
1571 !cfs_capable(CFS_CAP_FOWNER)) || IS_APPEND(dentry->d_inode) ||
1572 IS_IMMUTABLE(dentry->d_inode))
1573 GOTO(out, rc = -EPERM);
1575 /* NOTE: This might need to go outside i_mutex, though it isn't clear if
1576 * that was done because of journal_start (which is already done
1577 * here) or some other ordering issue. */
1580 rc = ll_security_inode_unlink(dir, dentry, mnt);
1584 rc = dir->i_op->unlink(dir, dentry);
1586 /* need to drop i_mutex before we lose inode reference */
1587 UNLOCK_INODE_MUTEX(dentry->d_inode);
1594 /* Caller must hold LCK_PW on parent and push us into kernel context.
1595 * Caller must hold child i_mutex, we drop it always.
1596 * Caller is also required to ensure that dchild->d_inode exists. */
1597 static int filter_destroy_internal(struct obd_device *obd, obd_id objid,
1598 obd_gr group, struct dentry *dparent,
1599 struct dentry *dchild)
1601 struct inode *inode = dchild->d_inode;
1602 struct filter_obd *filter = &obd->u.filter;
1605 if (inode->i_nlink != 1 || atomic_read(&inode->i_count) != 1) {
1606 CERROR("destroying objid %.*s ino %lu nlink %lu count %d\n",
1607 dchild->d_name.len, dchild->d_name.name, inode->i_ino,
1608 (unsigned long)inode->i_nlink,
1609 atomic_read(&inode->i_count));
1612 rc = filter_vfs_unlink(dparent->d_inode, dchild, filter->fo_vfsmnt);
1614 CERROR("error unlinking objid %.*s: rc %d\n",
1615 dchild->d_name.len, dchild->d_name.name, rc);
1619 struct filter_intent_args {
1620 struct ldlm_lock **victim;
1625 static enum interval_iter filter_intent_cb(struct interval_node *n,
1628 struct ldlm_interval *node = (struct ldlm_interval *)n;
1629 struct filter_intent_args *arg = (struct filter_intent_args*)args;
1630 __u64 size = arg->size;
1631 struct ldlm_lock **v = arg->victim;
1632 struct ldlm_lock *lck;
1634 /* If the interval is lower than the current file size,
1636 if (interval_high(n) <= size)
1637 return INTERVAL_ITER_STOP;
1639 list_for_each_entry(lck, &node->li_group, l_sl_policy) {
1640 /* Don't send glimpse ASTs to liblustre clients.
1641 * They aren't listening for them, and they do
1642 * entirely synchronous I/O anyways. */
1643 if (lck->l_export == NULL ||
1644 lck->l_export->exp_libclient == 1)
1647 if (*arg->liblustre)
1648 *arg->liblustre = 0;
1651 *v = LDLM_LOCK_GET(lck);
1652 } else if ((*v)->l_policy_data.l_extent.start <
1653 lck->l_policy_data.l_extent.start) {
1655 *v = LDLM_LOCK_GET(lck);
1658 /* the same policy group - every lock has the
1659 * same extent, so needn't do it any more */
1663 return INTERVAL_ITER_CONT;
1666 static int filter_intent_policy(struct ldlm_namespace *ns,
1667 struct ldlm_lock **lockp, void *req_cookie,
1668 ldlm_mode_t mode, int flags, void *data)
1670 CFS_LIST_HEAD(rpc_list);
1671 struct ptlrpc_request *req = req_cookie;
1672 struct ldlm_lock *lock = *lockp, *l = NULL;
1673 struct ldlm_resource *res = lock->l_resource;
1674 ldlm_processing_policy policy;
1675 struct ost_lvb *res_lvb, *reply_lvb;
1676 struct ldlm_reply *rep;
1678 int idx, rc, tmpflags = 0, only_liblustre = 1;
1679 struct ldlm_interval_tree *tree;
1680 struct filter_intent_args arg;
1681 __u32 repsize[3] = { [MSG_PTLRPC_BODY_OFF] = sizeof(struct ptlrpc_body),
1682 [DLM_LOCKREPLY_OFF] = sizeof(*rep),
1683 [DLM_REPLY_REC_OFF] = sizeof(*reply_lvb) };
1686 policy = ldlm_get_processing_policy(res);
1687 LASSERT(policy != NULL);
1688 LASSERT(req != NULL);
1690 rc = lustre_pack_reply(req, 3, repsize, NULL);
1692 RETURN(req->rq_status = rc);
1694 rep = lustre_msg_buf(req->rq_repmsg, DLM_LOCKREPLY_OFF, sizeof(*rep));
1695 LASSERT(rep != NULL);
1697 reply_lvb = lustre_msg_buf(req->rq_repmsg, DLM_REPLY_REC_OFF,
1698 sizeof(*reply_lvb));
1699 LASSERT(reply_lvb != NULL);
1701 //fixup_handle_for_resent_req(req, lock, &lockh);
1703 /* Call the extent policy function to see if our request can be
1704 * granted, or is blocked.
1705 * If the OST lock has LDLM_FL_HAS_INTENT set, it means a glimpse
1706 * lock, and should not be granted if the lock will be blocked.
1709 LASSERT(ns == res->lr_namespace);
1711 rc = policy(lock, &tmpflags, 0, &err, &rpc_list);
1712 check_res_locked(res);
1714 /* FIXME: we should change the policy function slightly, to not make
1715 * this list at all, since we just turn around and free it */
1716 while (!list_empty(&rpc_list)) {
1717 struct ldlm_lock *wlock =
1718 list_entry(rpc_list.next, struct ldlm_lock, l_cp_ast);
1719 LASSERT((lock->l_flags & LDLM_FL_AST_SENT) == 0);
1720 LASSERT(lock->l_flags & LDLM_FL_CP_REQD);
1721 lock->l_flags &= ~LDLM_FL_CP_REQD;
1722 list_del_init(&wlock->l_cp_ast);
1723 LDLM_LOCK_PUT(wlock);
1726 /* The lock met with no resistance; we're finished. */
1727 if (rc == LDLM_ITER_CONTINUE) {
1728 /* do not grant locks to the liblustre clients: they cannot
1729 * handle ASTs robustly. We need to do this while still
1730 * holding ns_lock to avoid the lock remaining on the res_link
1731 * list (and potentially being added to l_pending_list by an
1732 * AST) when we are going to drop this lock ASAP. */
1733 if (lock->l_export->exp_libclient ||
1734 OBD_FAIL_TIMEOUT(OBD_FAIL_LDLM_GLIMPSE, 2)) {
1735 ldlm_resource_unlink_lock(lock);
1736 err = ELDLM_LOCK_ABORTED;
1738 err = ELDLM_LOCK_REPLACED;
1744 /* Do not grant any lock, but instead send GL callbacks. The extent
1745 * policy nicely created a list of all PW locks for us. We will choose
1746 * the highest of those which are larger than the size in the LVB, if
1747 * any, and perform a glimpse callback. */
1748 res_lvb = res->lr_lvb_data;
1749 LASSERT(res_lvb != NULL);
1750 *reply_lvb = *res_lvb;
1753 * ->ns_lock guarantees that no new locks are granted, and,
1754 * therefore, that res->lr_lvb_data cannot increase beyond the
1755 * end of already granted lock. As a result, it is safe to
1756 * check against "stale" reply_lvb->lvb_size value without
1759 arg.size = reply_lvb->lvb_size;
1761 arg.liblustre = &only_liblustre;
1762 for (idx = 0; idx < LCK_MODE_NUM; idx++) {
1763 tree = &res->lr_itree[idx];
1764 if (tree->lit_mode == LCK_PR)
1767 interval_iterate_reverse(tree->lit_root,
1768 filter_intent_cb, &arg);
1772 /* There were no PW locks beyond the size in the LVB; finished. */
1774 if (only_liblustre) {
1775 /* If we discovered a liblustre client with a PW lock,
1776 * however, the LVB may be out of date! The LVB is
1777 * updated only on glimpse (which we don't do for
1778 * liblustre clients) and cancel (which the client
1779 * obviously has not yet done). So if it has written
1780 * data but kept the lock, the LVB is stale and needs
1781 * to be updated from disk.
1783 * Of course, this will all disappear when we switch to
1784 * taking liblustre locks on the OST. */
1785 ldlm_res_lvbo_update(res, NULL, 0, 1);
1787 RETURN(ELDLM_LOCK_ABORTED);
1791 * This check is for lock taken in filter_prepare_destroy() that does
1792 * not have l_glimpse_ast set. So the logic is: if there is a lock
1793 * with no l_glimpse_ast set, this object is being destroyed already.
1795 * Hence, if you are grabbing DLM locks on the server, always set
1796 * non-NULL glimpse_ast (e.g., ldlm_request.c:ldlm_glimpse_ast()).
1798 if (l->l_glimpse_ast == NULL) {
1799 /* We are racing with unlink(); just return -ENOENT */
1800 rep->lock_policy_res1 = -ENOENT;
1804 LASSERTF(l->l_glimpse_ast != NULL, "l == %p", l);
1805 rc = l->l_glimpse_ast(l, NULL); /* this will update the LVB */
1806 /* Update the LVB from disk if the AST failed (this is a legal race) */
1808 * XXX nikita: situation when ldlm_server_glimpse_ast() failed before
1809 * sending ast is not handled. This can result in lost client writes.
1812 ldlm_res_lvbo_update(res, NULL, 0, 1);
1815 *reply_lvb = *res_lvb;
1821 RETURN(ELDLM_LOCK_ABORTED);
1825 * per-obd_device iobuf pool.
1827 * To avoid memory deadlocks in low-memory setups, amount of dynamic
1828 * allocations in write-path has to be minimized (see bug 5137).
1830 * Pages, niobuf_local's and niobuf_remote's are pre-allocated and attached to
1831 * OST threads (see ost_thread_{init,done}()).
1833 * "iobuf's" used by filter cannot be attached to OST thread, however, because
1834 * at the OST layer there are only (potentially) multiple obd_device of type
1835 * unknown at the time of OST thread creation.
1837 * Instead array of iobuf's is attached to struct filter_obd (->fo_iobuf_pool
1838 * field). This array has size OST_MAX_THREADS, so that each OST thread uses
1839 * it's very own iobuf.
1843 * filter_kiobuf_pool_init()
1845 * filter_kiobuf_pool_done()
1847 * filter_iobuf_get()
1849 * operate on this array. They are "generic" in a sense that they don't depend
1850 * on actual type of iobuf's (the latter depending on Linux kernel version).
1854 * destroy pool created by filter_iobuf_pool_init
1856 static void filter_iobuf_pool_done(struct filter_obd *filter)
1858 struct filter_iobuf **pool;
1863 pool = filter->fo_iobuf_pool;
1865 for (i = 0; i < filter->fo_iobuf_count; ++ i) {
1866 if (pool[i] != NULL)
1867 filter_free_iobuf(pool[i]);
1869 OBD_FREE(pool, filter->fo_iobuf_count * sizeof pool[0]);
1870 filter->fo_iobuf_pool = NULL;
1876 * pre-allocate pool of iobuf's to be used by filter_{prep,commit}rw_write().
1878 static int filter_iobuf_pool_init(struct filter_obd *filter)
1885 OBD_ALLOC_GFP(filter->fo_iobuf_pool, OSS_THREADS_MAX * sizeof(*pool),
1887 if (filter->fo_iobuf_pool == NULL)
1890 filter->fo_iobuf_count = OSS_THREADS_MAX;
1895 /* Return iobuf allocated for @thread_id. We don't know in advance how
1896 * many threads there will be so we allocate a large empty array and only
1897 * fill in those slots that are actually in use.
1898 * If we haven't allocated a pool entry for this thread before, do so now. */
1899 void *filter_iobuf_get(struct filter_obd *filter, struct obd_trans_info *oti)
1901 int thread_id = oti ? oti->oti_thread_id : -1;
1902 struct filter_iobuf *pool = NULL;
1903 struct filter_iobuf **pool_place = NULL;
1905 if (thread_id >= 0) {
1906 LASSERT(thread_id < filter->fo_iobuf_count);
1907 pool = *(pool_place = &filter->fo_iobuf_pool[thread_id]);
1910 if (unlikely(pool == NULL)) {
1911 pool = filter_alloc_iobuf(filter, OBD_BRW_WRITE,
1912 PTLRPC_MAX_BRW_PAGES);
1913 if (pool_place != NULL)
1920 /* mount the file system (secretly). lustre_cfg parameters are:
1923 * 3 = flags: failover=f, failout=n
1926 int filter_common_setup(struct obd_device *obd, struct lustre_cfg* lcfg,
1929 struct filter_obd *filter = &obd->u.filter;
1930 struct vfsmount *mnt;
1931 struct lustre_mount_info *lmi;
1932 struct obd_uuid uuid;
1940 if (lcfg->lcfg_bufcount < 3 ||
1941 LUSTRE_CFG_BUFLEN(lcfg, 1) < 1 ||
1942 LUSTRE_CFG_BUFLEN(lcfg, 2) < 1)
1945 lmi = server_get_mount(obd->obd_name);
1947 /* We already mounted in lustre_fill_super.
1948 lcfg bufs 1, 2, 4 (device, fstype, mount opts) are ignored.*/
1949 struct lustre_sb_info *lsi = s2lsi(lmi->lmi_sb);
1951 obd->obd_fsops = fsfilt_get_ops(MT_STR(lsi->lsi_ldd));
1953 /* old path - used by lctl */
1954 CERROR("Using old MDS mount method\n");
1955 mnt = ll_kern_mount(lustre_cfg_string(lcfg, 2),
1956 MS_NOATIME|MS_NODIRATIME,
1957 lustre_cfg_string(lcfg, 1), option);
1960 LCONSOLE_ERROR_MSG(0x135, "Can't mount disk %s (%d)\n",
1961 lustre_cfg_string(lcfg, 1), rc);
1965 obd->obd_fsops = fsfilt_get_ops(lustre_cfg_string(lcfg, 2));
1967 if (IS_ERR(obd->obd_fsops))
1968 GOTO(err_mntput, rc = PTR_ERR(obd->obd_fsops));
1970 rc = filter_iobuf_pool_init(filter);
1974 LASSERT(!lvfs_check_rdonly(lvfs_sbdev(mnt->mnt_sb)));
1976 /* failover is the default */
1977 obd->obd_replayable = 1;
1979 if (lcfg->lcfg_bufcount > 3 && LUSTRE_CFG_BUFLEN(lcfg, 3) > 0) {
1980 str = lustre_cfg_string(lcfg, 3);
1981 if (strchr(str, 'n')) {
1982 CWARN("%s: recovery disabled\n", obd->obd_name);
1983 obd->obd_replayable = 0;
1987 filter->fo_vfsmnt = mnt;
1988 obd->u.obt.obt_sb = mnt->mnt_sb;
1989 filter->fo_fstype = mnt->mnt_sb->s_type->name;
1990 CDEBUG(D_SUPER, "%s: mnt = %p\n", filter->fo_fstype, mnt);
1992 fsfilt_setup(obd, obd->u.obt.obt_sb);
1994 OBD_SET_CTXT_MAGIC(&obd->obd_lvfs_ctxt);
1995 obd->obd_lvfs_ctxt.pwdmnt = mnt;
1996 obd->obd_lvfs_ctxt.pwd = mnt->mnt_root;
1997 obd->obd_lvfs_ctxt.fs = get_ds();
1998 obd->obd_lvfs_ctxt.cb_ops = filter_lvfs_ops;
2000 init_mutex(&filter->fo_init_lock);
2001 filter->fo_committed_group = 0;
2003 rc = filter_prep(obd);
2007 filter->fo_destroys_in_progress = 0;
2008 for (i = 0; i < 32; i++)
2009 sema_init(&filter->fo_create_locks[i], 1);
2011 spin_lock_init(&filter->fo_translock);
2012 spin_lock_init(&filter->fo_objidlock);
2013 CFS_INIT_LIST_HEAD(&filter->fo_export_list);
2014 sema_init(&filter->fo_alloc_lock, 1);
2015 init_brw_stats(&filter->fo_filter_stats);
2016 filter->fo_readcache_max_filesize = FILTER_MAX_CACHE_SIZE;
2017 filter->fo_fmd_max_num = FILTER_FMD_MAX_NUM_DEFAULT;
2018 filter->fo_fmd_max_age = FILTER_FMD_MAX_AGE_DEFAULT;
2020 CFS_INIT_LIST_HEAD(&filter->fo_llog_list);
2021 spin_lock_init(&filter->fo_llog_list_lock);
2023 filter->fo_sptlrpc_lock = RW_LOCK_UNLOCKED;
2024 sptlrpc_rule_set_init(&filter->fo_sptlrpc_rset);
2026 filter->fo_fl_oss_capa = 0;
2027 CFS_INIT_LIST_HEAD(&filter->fo_capa_keys);
2028 filter->fo_capa_hash = init_capa_hash();
2029 if (filter->fo_capa_hash == NULL)
2030 GOTO(err_ops, rc = -ENOMEM);
2032 sprintf(ns_name, "filter-%s", obd->obd_uuid.uuid);
2033 obd->obd_namespace = ldlm_namespace_new(obd, ns_name, LDLM_NAMESPACE_SERVER,
2034 LDLM_NAMESPACE_GREEDY);
2035 if (obd->obd_namespace == NULL)
2036 GOTO(err_post, rc = -ENOMEM);
2037 obd->obd_namespace->ns_lvbp = obd;
2038 obd->obd_namespace->ns_lvbo = &filter_lvbo;
2039 ldlm_register_intent(obd->obd_namespace, filter_intent_policy);
2041 ptlrpc_init_client(LDLM_CB_REQUEST_PORTAL, LDLM_CB_REPLY_PORTAL,
2042 "filter_ldlm_cb_client", &obd->obd_ldlm_client);
2044 rc = llog_cat_initialize(obd, &obd->obd_olg, 1, NULL);
2046 CERROR("failed to setup llogging subsystems\n");
2050 rc = lquota_setup(filter_quota_interface_ref, obd);
2054 q = bdev_get_queue(mnt->mnt_sb->s_bdev);
2055 if (q->max_sectors < q->max_hw_sectors &&
2056 q->max_sectors < PTLRPC_MAX_BRW_SIZE >> 9)
2057 LCONSOLE_INFO("%s: underlying device %s should be tuned "
2058 "for larger I/O requests: max_sectors = %u "
2059 "could be up to max_hw_sectors=%u\n",
2060 obd->obd_name, mnt->mnt_sb->s_id,
2061 q->max_sectors, q->max_hw_sectors);
2063 uuid_ptr = fsfilt_uuid(obd, obd->u.obt.obt_sb);
2064 if (uuid_ptr != NULL) {
2065 class_uuid_unparse(uuid_ptr, &uuid);
2071 label = fsfilt_get_label(obd, obd->u.obt.obt_sb);
2073 if (obd->obd_recovering) {
2074 LCONSOLE_WARN("OST %s now serving %s (%s%s%s), but will be in "
2075 "recovery for at least %d:%.02d, or until %d "
2076 "client%s reconnect. During this time new clients"
2077 " will not be allowed to connect. "
2078 "Recovery progress can be monitored by watching "
2079 "/proc/fs/lustre/obdfilter/%s/recovery_status.\n",
2080 obd->obd_name, lustre_cfg_string(lcfg, 1),
2081 label ?: "", label ? "/" : "", str,
2082 obd->obd_recovery_timeout / 60,
2083 obd->obd_recovery_timeout % 60,
2084 obd->obd_max_recoverable_clients,
2085 (obd->obd_max_recoverable_clients == 1) ? "":"s",
2088 LCONSOLE_INFO("OST %s now serving %s (%s%s%s) with recovery "
2089 "%s\n", obd->obd_name, lustre_cfg_string(lcfg, 1),
2090 label ?: "", label ? "/" : "", str,
2091 obd->obd_replayable ? "enabled" : "disabled");
2099 fsfilt_put_ops(obd->obd_fsops);
2100 filter_iobuf_pool_done(filter);
2102 server_put_mount(obd->obd_name, mnt);
2103 obd->u.obt.obt_sb = 0;
2107 static int filter_setup(struct obd_device *obd, struct lustre_cfg* lcfg)
2109 struct lprocfs_static_vars lvars;
2114 CLASSERT(offsetof(struct obd_device, u.obt) ==
2115 offsetof(struct obd_device, u.filter.fo_obt));
2117 if (!LUSTRE_CFG_BUFLEN(lcfg, 1) || !LUSTRE_CFG_BUFLEN(lcfg, 2))
2120 /* 2.6.9 selinux wants a full option page for do_kern_mount (bug6471) */
2121 OBD_PAGE_ALLOC(page, CFS_ALLOC_STD);
2124 addr = (unsigned long)cfs_page_address(page);
2125 clear_page((void *)addr);
2127 /* lprocfs must be setup before the filter so state can be safely added
2128 * to /proc incrementally as the filter is setup */
2129 lprocfs_filter_init_vars(&lvars);
2130 if (lprocfs_obd_setup(obd, lvars.obd_vars) == 0 &&
2131 lprocfs_alloc_obd_stats(obd, LPROC_FILTER_LAST) == 0) {
2132 /* Init obdfilter private stats here */
2133 lprocfs_counter_init(obd->obd_stats, LPROC_FILTER_READ_BYTES,
2134 LPROCFS_CNTR_AVGMINMAX,
2135 "read_bytes", "bytes");
2136 lprocfs_counter_init(obd->obd_stats, LPROC_FILTER_WRITE_BYTES,
2137 LPROCFS_CNTR_AVGMINMAX,
2138 "write_bytes", "bytes");
2140 lproc_filter_attach_seqstat(obd);
2141 obd->obd_proc_exports_entry = lprocfs_register("exports",
2142 obd->obd_proc_entry,
2144 if (IS_ERR(obd->obd_proc_exports_entry)) {
2145 rc = PTR_ERR(obd->obd_proc_exports_entry);
2146 CERROR("error %d setting up lprocfs for %s\n",
2148 obd->obd_proc_exports_entry = NULL;
2151 if (obd->obd_proc_exports_entry)
2152 lprocfs_add_simple(obd->obd_proc_exports_entry, "clear",
2153 lprocfs_nid_stats_clear_read,
2154 lprocfs_nid_stats_clear_write, obd, NULL);
2156 memcpy((void *)addr, lustre_cfg_buf(lcfg, 4),
2157 LUSTRE_CFG_BUFLEN(lcfg, 4));
2158 rc = filter_common_setup(obd, lcfg, (void *)addr);
2159 OBD_PAGE_FREE(page);
2162 lprocfs_remove_proc_entry("clear", obd->obd_proc_exports_entry);
2163 lprocfs_free_per_client_stats(obd);
2164 lprocfs_free_obd_stats(obd);
2165 lprocfs_obd_cleanup(obd);
2171 static struct llog_operations filter_mds_ost_repl_logops;
2173 static struct llog_operations filter_size_orig_logops = {
2174 .lop_setup = llog_obd_origin_setup,
2175 .lop_cleanup = llog_obd_origin_cleanup,
2176 .lop_add = llog_obd_origin_add
2179 static int filter_olg_fini(struct obd_llog_group *olg)
2181 struct llog_ctxt *ctxt;
2182 int rc = 0, rc2 = 0;
2185 ctxt = llog_group_get_ctxt(olg, LLOG_MDS_OST_REPL_CTXT);
2187 rc = llog_cleanup(ctxt);
2189 ctxt = llog_group_get_ctxt(olg, LLOG_SIZE_ORIG_CTXT);
2191 rc2 = llog_cleanup(ctxt);
2199 filter_olg_init(struct obd_device *obd, struct obd_llog_group *olg,
2200 struct obd_device *tgt)
2205 rc = llog_setup(obd, olg, LLOG_MDS_OST_REPL_CTXT, tgt, 0, NULL,
2206 &filter_mds_ost_repl_logops);
2210 rc = llog_setup(obd, olg, LLOG_SIZE_ORIG_CTXT, tgt, 0, NULL,
2211 &filter_size_orig_logops);
2217 filter_olg_fini(olg);
2222 * Init the default olg, which is embeded in the obd_device, for filter.
2225 filter_default_olg_init(struct obd_device *obd, struct obd_llog_group *olg,
2226 struct obd_device *tgt)
2228 struct filter_obd *filter = &obd->u.filter;
2229 struct llog_ctxt *ctxt;
2233 filter->fo_lcm = llog_recov_thread_init(obd->obd_name);
2234 if (!filter->fo_lcm)
2237 filter_mds_ost_repl_logops = llog_client_ops;
2238 filter_mds_ost_repl_logops.lop_cancel = llog_obd_repl_cancel;
2239 filter_mds_ost_repl_logops.lop_connect = llog_obd_repl_connect;
2240 filter_mds_ost_repl_logops.lop_sync = llog_obd_repl_sync;
2242 rc = filter_olg_init(obd, olg, tgt);
2244 GOTO(cleanup_lcm, rc);
2246 ctxt = llog_group_get_ctxt(olg, LLOG_MDS_OST_REPL_CTXT);
2248 CERROR("Can't get ctxt for %p:%x\n", olg,
2249 LLOG_MDS_OST_REPL_CTXT);
2250 GOTO(cleanup_olg, rc = -ENODEV);
2252 ctxt->loc_lcm = filter->fo_lcm;
2253 ctxt->llog_proc_cb = filter_recov_log_mds_ost_cb;
2254 llog_ctxt_put(ctxt);
2258 filter_olg_fini(olg);
2260 llog_recov_thread_fini(filter->fo_lcm, 1);
2261 filter->fo_lcm = NULL;
2266 filter_llog_init(struct obd_device *obd, struct obd_llog_group *olg,
2267 struct obd_device *tgt, int count, struct llog_catid *catid,
2268 struct obd_uuid *uuid)
2270 struct filter_obd *filter = &obd->u.filter;
2271 struct llog_ctxt *ctxt;
2275 LASSERT(olg != NULL);
2276 if (olg == &obd->obd_olg)
2277 return filter_default_olg_init(obd, olg, tgt);
2279 LASSERT(filter->fo_lcm != NULL);
2280 rc = filter_olg_init(obd, olg, tgt);
2283 ctxt = llog_group_get_ctxt(olg, LLOG_MDS_OST_REPL_CTXT);
2285 CERROR("Can't get ctxt for %p:%x\n", olg,
2286 LLOG_MDS_OST_REPL_CTXT);
2287 filter_olg_fini(olg);
2290 ctxt->llog_proc_cb = filter_recov_log_mds_ost_cb;
2291 ctxt->loc_lcm = filter->fo_lcm;
2292 llog_ctxt_put(ctxt);
2296 static int filter_llog_finish(struct obd_device *obd, int count)
2298 struct filter_obd *filter = &obd->u.filter;
2299 struct llog_ctxt *ctxt;
2302 ctxt = llog_group_get_ctxt(&obd->obd_olg, LLOG_MDS_OST_REPL_CTXT);
2303 LASSERT(ctxt != NULL);
2304 mutex_down(&ctxt->loc_sem);
2305 if (ctxt->loc_imp) {
2307 * Balance class_import_get() in llog_receptor_accept(). This
2308 * is safe to do here, as llog is already synchronized and its
2311 class_import_put(ctxt->loc_imp);
2312 ctxt->loc_imp = NULL;
2314 mutex_up(&ctxt->loc_sem);
2315 llog_ctxt_put(ctxt);
2317 if (filter->fo_lcm) {
2318 llog_recov_thread_fini(filter->fo_lcm, obd->obd_force);
2319 filter->fo_lcm = NULL;
2321 RETURN(filter_olg_fini(&obd->obd_olg));
2325 * Find the group llog according to group index in the llog group list.
2327 static struct obd_llog_group *
2328 filter_find_olg_internal(struct filter_obd *filter, int group)
2330 struct obd_llog_group *olg;
2332 LASSERT_SPIN_LOCKED(&filter->fo_llog_list_lock);
2333 list_for_each_entry(olg, &filter->fo_llog_list, olg_list) {
2334 if (olg->olg_group == group)
2341 * Find the group llog according to group index on the filter
2343 struct obd_llog_group *filter_find_olg(struct obd_device *obd, int group)
2345 struct obd_llog_group *olg = NULL;
2346 struct filter_obd *filter;
2348 filter = &obd->u.filter;
2350 if (group == OBD_LLOG_GROUP)
2351 RETURN(&obd->obd_olg);
2353 spin_lock(&filter->fo_llog_list_lock);
2354 olg = filter_find_olg_internal(filter, group);
2355 spin_unlock(&filter->fo_llog_list_lock);
2360 * Find the llog_group of the filter according to the group. If it can not
2361 * find, create the llog_group, which only happens when mds is being synced
2364 struct obd_llog_group *filter_find_create_olg(struct obd_device *obd, int group)
2366 struct obd_llog_group *olg = NULL;
2367 struct filter_obd *filter;
2370 filter = &obd->u.filter;
2372 if (group == OBD_LLOG_GROUP)
2373 RETURN(&obd->obd_olg);
2375 spin_lock(&filter->fo_llog_list_lock);
2376 olg = filter_find_olg_internal(filter, group);
2378 if (olg->olg_initializing) {
2379 GOTO(out_unlock, olg = ERR_PTR(-EBUSY));
2381 GOTO(out_unlock, olg);
2386 GOTO(out_unlock, olg = ERR_PTR(-ENOMEM));
2388 llog_group_init(olg, group);
2389 list_add(&olg->olg_list, &filter->fo_llog_list);
2390 olg->olg_initializing = 1;
2391 spin_unlock(&filter->fo_llog_list_lock);
2393 rc = llog_cat_initialize(obd, olg, 1, NULL);
2395 spin_lock(&filter->fo_llog_list_lock);
2396 list_del(&olg->olg_list);
2397 spin_unlock(&filter->fo_llog_list_lock);
2399 GOTO(out, olg = ERR_PTR(-ENOMEM));
2401 spin_lock(&filter->fo_llog_list_lock);
2402 olg->olg_initializing = 0;
2403 spin_unlock(&filter->fo_llog_list_lock);
2404 CDEBUG(D_OTHER, "%s: new llog group %u (0x%p)\n",
2405 obd->obd_name, group, olg);
2410 spin_unlock(&filter->fo_llog_list_lock);
2414 static int filter_llog_connect(struct obd_export *exp,
2415 struct llogd_conn_body *body)
2417 struct obd_device *obd = exp->exp_obd;
2418 struct llog_ctxt *ctxt;
2419 struct obd_llog_group *olg;
2423 CDEBUG(D_OTHER, "handle connect for %s: %u/%u/%u\n", obd->obd_name,
2424 (unsigned) body->lgdc_logid.lgl_ogr,
2425 (unsigned) body->lgdc_logid.lgl_oid,
2426 (unsigned) body->lgdc_logid.lgl_ogen);
2428 olg = filter_find_olg(obd, body->lgdc_logid.lgl_ogr);
2430 CERROR(" %s: can not find olg of group %d\n",
2431 obd->obd_name, (int)body->lgdc_logid.lgl_ogr);
2434 llog_group_set_export(olg, exp);
2436 ctxt = llog_group_get_ctxt(olg, body->lgdc_ctxt_idx);
2437 LASSERTF(ctxt != NULL, "ctxt is not null, ctxt idx %d \n",
2438 body->lgdc_ctxt_idx);
2439 rc = llog_connect(ctxt, 1, &body->lgdc_logid,
2440 &body->lgdc_gen, NULL);
2441 llog_ctxt_put(ctxt);
2443 CERROR("failed to connect rc %d idx %d\n", rc,
2444 body->lgdc_ctxt_idx);
2449 static int filter_llog_preclean(struct obd_device *obd)
2451 struct obd_llog_group *olg, *tmp;
2452 struct filter_obd *filter;
2453 struct list_head remove_list;
2457 rc = obd_llog_finish(obd, 0);
2459 CERROR("failed to cleanup llogging subsystem\n");
2461 filter = &obd->u.filter;
2462 CFS_INIT_LIST_HEAD(&remove_list);
2464 spin_lock(&filter->fo_llog_list_lock);
2465 while (!list_empty(&filter->fo_llog_list)) {
2466 olg = list_entry(filter->fo_llog_list.next,
2467 struct obd_llog_group, olg_list);
2468 list_del(&olg->olg_list);
2469 list_add(&olg->olg_list, &remove_list);
2471 spin_unlock(&filter->fo_llog_list_lock);
2473 list_for_each_entry_safe(olg, tmp, &remove_list, olg_list) {
2474 list_del_init(&olg->olg_list);
2475 rc = filter_olg_fini(olg);
2477 CERROR("failed to cleanup llogging subsystem for %u\n",
2485 static int filter_precleanup(struct obd_device *obd,
2486 enum obd_cleanup_stage stage)
2492 case OBD_CLEANUP_EARLY:
2494 case OBD_CLEANUP_EXPORTS:
2495 target_cleanup_recovery(obd);
2496 rc = filter_llog_preclean(obd);
2502 static int filter_cleanup(struct obd_device *obd)
2504 struct filter_obd *filter = &obd->u.filter;
2508 LCONSOLE_WARN("%s: shutting down for failover; client state "
2509 "will be preserved.\n", obd->obd_name);
2511 if (!list_empty(&obd->obd_exports)) {
2512 CERROR("%s: still has clients!\n", obd->obd_name);
2513 class_disconnect_exports(obd);
2514 if (!list_empty(&obd->obd_exports)) {
2515 CERROR("still has exports after forced cleanup?\n");
2520 lprocfs_remove_proc_entry("clear", obd->obd_proc_exports_entry);
2521 lprocfs_free_per_client_stats(obd);
2522 lprocfs_free_obd_stats(obd);
2523 lprocfs_obd_cleanup(obd);
2524 lquota_cleanup(filter_quota_interface_ref, obd);
2526 /* Stop recovery before namespace cleanup. */
2527 target_stop_recovery_thread(obd);
2528 target_cleanup_recovery(obd);
2530 ldlm_namespace_free(obd->obd_namespace, NULL, obd->obd_force);
2531 obd->obd_namespace = NULL;
2533 sptlrpc_rule_set_free(&filter->fo_sptlrpc_rset);
2535 if (obd->u.obt.obt_sb == NULL)
2540 LL_DQUOT_OFF(obd->u.obt.obt_sb);
2541 shrink_dcache_sb(obd->u.obt.obt_sb);
2543 server_put_mount(obd->obd_name, filter->fo_vfsmnt);
2544 obd->u.obt.obt_sb = NULL;
2546 fsfilt_put_ops(obd->obd_fsops);
2548 filter_iobuf_pool_done(filter);
2550 LCONSOLE_INFO("OST %s has stopped.\n", obd->obd_name);
2555 static int filter_connect_internal(struct obd_export *exp,
2556 struct obd_connect_data *data)
2558 struct filter_export_data *fed = &exp->exp_filter_data;
2563 CDEBUG(D_RPCTRACE, "%s: cli %s/%p ocd_connect_flags: "LPX64
2564 " ocd_version: %x ocd_grant: %d ocd_index: %u\n",
2565 exp->exp_obd->obd_name, exp->exp_client_uuid.uuid, exp,
2566 data->ocd_connect_flags, data->ocd_version,
2567 data->ocd_grant, data->ocd_index);
2569 if (fed->fed_group != 0 && fed->fed_group != data->ocd_group) {
2570 CWARN("!!! This export (nid %s) used object group %d "
2571 "earlier; now it's trying to use group %d! This could "
2572 "be a bug in the MDS. Please report to "
2573 "http://bugzilla.lustre.org/\n",
2574 obd_export_nid2str(exp), fed->fed_group,data->ocd_group);
2577 fed->fed_group = data->ocd_group;
2579 data->ocd_connect_flags &= OST_CONNECT_SUPPORTED;
2580 exp->exp_connect_flags = data->ocd_connect_flags;
2581 data->ocd_version = LUSTRE_VERSION_CODE;
2583 if (exp->exp_connect_flags & OBD_CONNECT_GRANT) {
2584 obd_size left, want;
2586 spin_lock(&exp->exp_obd->obd_osfs_lock);
2587 left = filter_grant_space_left(exp);
2588 want = data->ocd_grant;
2589 filter_grant(exp, fed->fed_grant, want, left);
2590 data->ocd_grant = fed->fed_grant;
2591 spin_unlock(&exp->exp_obd->obd_osfs_lock);
2593 CDEBUG(D_CACHE, "%s: cli %s/%p ocd_grant: %d want: "
2594 LPU64" left: "LPU64"\n", exp->exp_obd->obd_name,
2595 exp->exp_client_uuid.uuid, exp,
2596 data->ocd_grant, want, left);
2599 if (data->ocd_connect_flags & OBD_CONNECT_INDEX) {
2600 struct filter_obd *filter = &exp->exp_obd->u.filter;
2601 struct lr_server_data *lsd = filter->fo_fsd;
2602 int index = le32_to_cpu(lsd->lsd_ost_index);
2604 if (!(lsd->lsd_feature_compat &
2605 cpu_to_le32(OBD_COMPAT_OST))) {
2606 /* this will only happen on the first connect */
2607 lsd->lsd_ost_index = cpu_to_le32(data->ocd_index);
2608 lsd->lsd_feature_compat |= cpu_to_le32(OBD_COMPAT_OST);
2609 filter_update_server_data(exp->exp_obd,
2610 filter->fo_rcvd_filp, lsd, 1);
2611 } else if (index != data->ocd_index) {
2612 LCONSOLE_ERROR_MSG(0x136, "Connection from %s to index"
2613 " %u doesn't match actual OST index"
2614 " %u in last_rcvd file, bad "
2616 obd_export_nid2str(exp), index,
2622 if (OBD_FAIL_CHECK(OBD_FAIL_OST_BRW_SIZE)) {
2623 data->ocd_brw_size = 65536;
2624 } else if (data->ocd_connect_flags & OBD_CONNECT_BRW_SIZE) {
2625 data->ocd_brw_size = min(data->ocd_brw_size,
2626 (__u32)(PTLRPC_MAX_BRW_PAGES << CFS_PAGE_SHIFT));
2627 LASSERT(data->ocd_brw_size);
2630 if (data->ocd_connect_flags & OBD_CONNECT_CKSUM) {
2631 __u32 cksum_types = data->ocd_cksum_types;
2633 /* The client set in ocd_cksum_types the checksum types it
2634 * supports. We have to mask off the algorithms that we don't
2636 if (cksum_types & OBD_CKSUM_ALL)
2637 data->ocd_cksum_types &= OBD_CKSUM_ALL;
2639 data->ocd_cksum_types = OBD_CKSUM_CRC32;
2641 CDEBUG(D_RPCTRACE, "%s: cli %s supports cksum type %x, return "
2642 "%x\n", exp->exp_obd->obd_name,
2643 obd_export_nid2str(exp), cksum_types,
2644 data->ocd_cksum_types);
2646 /* This client does not support OBD_CONNECT_CKSUM
2647 * fall back to CRC32 */
2648 CDEBUG(D_RPCTRACE, "%s: cli %s does not support "
2649 "OBD_CONNECT_CKSUM, CRC32 will be used\n",
2650 exp->exp_obd->obd_name,
2651 obd_export_nid2str(exp));
2654 /* FIXME: Do the same with the MDS UUID and fsd_peeruuid.
2655 * FIXME: We don't strictly need the COMPAT flag for that,
2656 * FIXME: as fsd_peeruuid[0] will tell us if that is set.
2657 * FIXME: We needed it for the index, as index 0 is valid. */
2662 static int filter_reconnect(const struct lu_env *env,
2663 struct obd_export *exp, struct obd_device *obd,
2664 struct obd_uuid *cluuid,
2665 struct obd_connect_data *data)
2670 if (exp == NULL || obd == NULL || cluuid == NULL)
2673 rc = filter_connect_internal(exp, data);
2678 /* nearly identical to mds_connect */
2679 static int filter_connect(const struct lu_env *env,
2680 struct lustre_handle *conn, struct obd_device *obd,
2681 struct obd_uuid *cluuid,
2682 struct obd_connect_data *data, void *localdata)
2684 struct lvfs_run_ctxt saved;
2685 struct obd_export *exp;
2686 struct filter_export_data *fed;
2687 struct lsd_client_data *lcd = NULL;
2692 if (conn == NULL || obd == NULL || cluuid == NULL)
2695 rc = class_connect(conn, obd, cluuid);
2698 exp = class_conn2export(conn);
2699 LASSERT(exp != NULL);
2701 fed = &exp->exp_filter_data;
2703 rc = filter_connect_internal(exp, data);
2707 filter_export_stats_init(obd, exp, localdata);
2708 if (obd->obd_replayable) {
2709 OBD_ALLOC(lcd, sizeof(*lcd));
2711 CERROR("filter: out of memory for client data\n");
2712 GOTO(cleanup, rc = -ENOMEM);
2715 memcpy(lcd->lcd_uuid, cluuid, sizeof(lcd->lcd_uuid));
2717 rc = filter_client_add(obd, exp, -1);
2722 group = data->ocd_group;
2726 CWARN("%s: Received MDS connection ("LPX64"); group %d\n",
2727 obd->obd_name, exp->exp_handle.h_cookie, group);
2729 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
2730 rc = filter_read_groups(obd, group, 1);
2731 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
2733 CERROR("can't read group %u\n", group);
2743 fed->fed_lcd = NULL;
2745 class_disconnect(exp);
2747 class_export_put(exp);
2753 /* Do extra sanity checks for grant accounting. We do this at connect,
2754 * disconnect, and statfs RPC time, so it shouldn't be too bad. We can
2755 * always get rid of it or turn it off when we know accounting is good. */
2756 static void filter_grant_sanity_check(struct obd_device *obd, const char *func)
2758 struct filter_export_data *fed;
2759 struct obd_export *exp;
2760 obd_size maxsize = obd->obd_osfs.os_blocks * obd->obd_osfs.os_bsize;
2761 obd_size tot_dirty = 0, tot_pending = 0, tot_granted = 0;
2762 obd_size fo_tot_dirty, fo_tot_pending, fo_tot_granted;
2764 if (list_empty(&obd->obd_exports))
2767 /* We don't want to do this for large machines that do lots of
2768 mounts or unmounts. It burns... */
2769 if (obd->obd_num_exports > 100)
2772 spin_lock(&obd->obd_osfs_lock);
2773 spin_lock(&obd->obd_dev_lock);
2774 list_for_each_entry(exp, &obd->obd_exports, exp_obd_chain) {
2776 fed = &exp->exp_filter_data;
2777 if (fed->fed_grant < 0 || fed->fed_pending < 0 ||
2780 if (maxsize > 0) { /* we may not have done a statfs yet */
2781 LASSERTF(fed->fed_grant + fed->fed_pending <= maxsize,
2782 "%s: cli %s/%p %ld+%ld > "LPU64"\n", func,
2783 exp->exp_client_uuid.uuid, exp,
2784 fed->fed_grant, fed->fed_pending, maxsize);
2785 LASSERTF(fed->fed_dirty <= maxsize,
2786 "%s: cli %s/%p %ld > "LPU64"\n", func,
2787 exp->exp_client_uuid.uuid, exp,
2788 fed->fed_dirty, maxsize);
2791 CERROR("%s: cli %s/%p dirty %ld pend %ld grant %ld\n",
2792 obd->obd_name, exp->exp_client_uuid.uuid, exp,
2793 fed->fed_dirty, fed->fed_pending,fed->fed_grant);
2795 CDEBUG(D_CACHE, "%s: cli %s/%p dirty %ld pend %ld grant %ld\n",
2796 obd->obd_name, exp->exp_client_uuid.uuid, exp,
2797 fed->fed_dirty, fed->fed_pending,fed->fed_grant);
2798 tot_granted += fed->fed_grant + fed->fed_pending;
2799 tot_pending += fed->fed_pending;
2800 tot_dirty += fed->fed_dirty;
2802 fo_tot_granted = obd->u.filter.fo_tot_granted;
2803 fo_tot_pending = obd->u.filter.fo_tot_pending;
2804 fo_tot_dirty = obd->u.filter.fo_tot_dirty;
2805 spin_unlock(&obd->obd_dev_lock);
2806 spin_unlock(&obd->obd_osfs_lock);
2808 /* Do these assertions outside the spinlocks so we don't kill system */
2809 if (tot_granted != fo_tot_granted)
2810 CERROR("%s: tot_granted "LPU64" != fo_tot_granted "LPU64"\n",
2811 func, tot_granted, fo_tot_granted);
2812 if (tot_pending != fo_tot_pending)
2813 CERROR("%s: tot_pending "LPU64" != fo_tot_pending "LPU64"\n",
2814 func, tot_pending, fo_tot_pending);
2815 if (tot_dirty != fo_tot_dirty)
2816 CERROR("%s: tot_dirty "LPU64" != fo_tot_dirty "LPU64"\n",
2817 func, tot_dirty, fo_tot_dirty);
2818 if (tot_pending > tot_granted)
2819 CERROR("%s: tot_pending "LPU64" > tot_granted "LPU64"\n",
2820 func, tot_pending, tot_granted);
2821 if (tot_granted > maxsize)
2822 CERROR("%s: tot_granted "LPU64" > maxsize "LPU64"\n",
2823 func, tot_granted, maxsize);
2824 if (tot_dirty > maxsize)
2825 CERROR("%s: tot_dirty "LPU64" > maxsize "LPU64"\n",
2826 func, tot_dirty, maxsize);
2829 /* Remove this client from the grant accounting totals. We also remove
2830 * the export from the obd device under the osfs and dev locks to ensure
2831 * that the filter_grant_sanity_check() calculations are always valid.
2832 * The client should do something similar when it invalidates its import. */
2833 static void filter_grant_discard(struct obd_export *exp)
2835 struct obd_device *obd = exp->exp_obd;
2836 struct filter_obd *filter = &obd->u.filter;
2837 struct filter_export_data *fed = &exp->exp_filter_data;
2839 spin_lock(&obd->obd_osfs_lock);
2840 spin_lock(&obd->obd_dev_lock);
2841 list_del_init(&exp->exp_obd_chain);
2842 spin_unlock(&obd->obd_dev_lock);
2844 LASSERTF(filter->fo_tot_granted >= fed->fed_grant,
2845 "%s: tot_granted "LPU64" cli %s/%p fed_grant %ld\n",
2846 obd->obd_name, filter->fo_tot_granted,
2847 exp->exp_client_uuid.uuid, exp, fed->fed_grant);
2848 filter->fo_tot_granted -= fed->fed_grant;
2849 LASSERTF(filter->fo_tot_pending >= fed->fed_pending,
2850 "%s: tot_pending "LPU64" cli %s/%p fed_pending %ld\n",
2851 obd->obd_name, filter->fo_tot_pending,
2852 exp->exp_client_uuid.uuid, exp, fed->fed_pending);
2853 /* fo_tot_pending is handled in filter_grant_commit as bulk finishes */
2854 LASSERTF(filter->fo_tot_dirty >= fed->fed_dirty,
2855 "%s: tot_dirty "LPU64" cli %s/%p fed_dirty %ld\n",
2856 obd->obd_name, filter->fo_tot_dirty,
2857 exp->exp_client_uuid.uuid, exp, fed->fed_dirty);
2858 filter->fo_tot_dirty -= fed->fed_dirty;
2862 spin_unlock(&obd->obd_osfs_lock);
2865 static int filter_destroy_export(struct obd_export *exp)
2869 if (exp->exp_filter_data.fed_pending)
2870 CERROR("%s: cli %s/%p has %lu pending on destroyed export\n",
2871 exp->exp_obd->obd_name, exp->exp_client_uuid.uuid,
2872 exp, exp->exp_filter_data.fed_pending);
2874 /* Not ported yet the b1_6 quota functionality
2875 * lquota_clearinfo(filter_quota_interface_ref, exp, exp->exp_obd);
2878 target_destroy_export(exp);
2879 ldlm_destroy_export(exp);
2881 if (obd_uuid_equals(&exp->exp_client_uuid, &exp->exp_obd->obd_uuid))
2885 if (exp->exp_obd->obd_replayable)
2886 filter_client_free(exp);
2888 fsfilt_sync(exp->exp_obd, exp->exp_obd->u.obt.obt_sb);
2890 filter_grant_discard(exp);
2891 filter_fmd_cleanup(exp);
2893 if (!(exp->exp_flags & OBD_OPT_FORCE))
2894 filter_grant_sanity_check(exp->exp_obd, __FUNCTION__);
2899 static void filter_sync_llogs(struct obd_device *obd, struct obd_export *dexp)
2901 struct obd_llog_group *olg_min, *olg;
2902 struct filter_obd *filter;
2903 int worked = 0, group;
2904 struct llog_ctxt *ctxt;
2907 filter = &obd->u.filter;
2909 /* we can't sync log holding spinlock. also, we do not want to get
2910 * into livelock. so we do following: loop over MDS's exports in
2911 * group order and skip already synced llogs -bzzz */
2913 /* look for group with min. number, but > worked */
2916 spin_lock(&filter->fo_llog_list_lock);
2917 list_for_each_entry(olg, &filter->fo_llog_list, olg_list) {
2918 if (olg->olg_group <= worked) {
2919 /* this group is already synced */
2922 if (group < olg->olg_group) {
2923 /* we have group with smaller number to sync */
2926 /* store current minimal group */
2928 group = olg->olg_group;
2930 spin_unlock(&filter->fo_llog_list_lock);
2932 if (olg_min == NULL)
2935 worked = olg_min->olg_group;
2936 if (olg_min->olg_exp &&
2937 (dexp == olg_min->olg_exp || dexp == NULL)) {
2939 ctxt = llog_group_get_ctxt(olg_min,
2940 LLOG_MDS_OST_REPL_CTXT);
2941 LASSERT(ctxt != NULL);
2942 err = llog_sync(ctxt, olg_min->olg_exp);
2943 llog_ctxt_put(ctxt);
2945 CERROR("error flushing logs to MDS: rc %d\n",
2948 } while (olg_min != NULL);
2951 /* also incredibly similar to mds_disconnect */
2952 static int filter_disconnect(struct obd_export *exp)
2954 struct obd_device *obd = exp->exp_obd;
2959 class_export_get(exp);
2961 if (!(exp->exp_flags & OBD_OPT_FORCE))
2962 filter_grant_sanity_check(obd, __FUNCTION__);
2963 filter_grant_discard(exp);
2965 /* Disconnect early so that clients can't keep using export */
2966 rc = class_disconnect(exp);
2967 if (exp->exp_obd->obd_namespace != NULL)
2968 ldlm_cancel_locks_for_export(exp);
2970 fsfilt_sync(obd, obd->u.obt.obt_sb);
2972 lprocfs_exp_cleanup(exp);
2974 /* flush any remaining cancel messages out to the target */
2975 filter_sync_llogs(obd, exp);
2976 class_export_put(exp);
2980 /* reverse import is changed, sync all cancels */
2981 static void filter_revimp_update(struct obd_export *exp)
2986 class_export_get(exp);
2988 /* flush any remaining cancel messages out to the target */
2989 filter_sync_llogs(exp->exp_obd, exp);
2990 class_export_put(exp);
2994 static int filter_ping(struct obd_export *exp)
2996 filter_fmd_expire(exp);
3001 struct dentry *__filter_oa2dentry(struct obd_device *obd, struct obdo *oa,
3002 const char *what, int quiet)
3004 struct dentry *dchild = NULL;
3007 if (oa->o_valid & OBD_MD_FLGROUP)
3010 dchild = filter_fid2dentry(obd, NULL, group, oa->o_id);
3012 if (IS_ERR(dchild)) {
3013 CERROR("%s error looking up object: "LPU64":"LPU64"\n",
3014 what, group, oa->o_id);
3018 if (dchild->d_inode == NULL) {
3020 CERROR("%s: %s on non-existent object: "LPU64"\n",
3021 obd->obd_name, what, oa->o_id);
3023 RETURN(ERR_PTR(-ENOENT));
3029 static int filter_getattr(struct obd_export *exp, struct obd_info *oinfo)
3031 struct dentry *dentry = NULL;
3032 struct obd_device *obd;
3036 rc = filter_auth_capa(exp, NULL, oinfo_mdsno(oinfo),
3037 oinfo_capa(oinfo), CAPA_OPC_META_READ);
3041 obd = class_exp2obd(exp);
3043 CDEBUG(D_IOCTL, "invalid client export %p\n", exp);
3047 dentry = filter_oa2dentry(obd, oinfo->oi_oa);
3049 RETURN(PTR_ERR(dentry));
3051 /* Limit the valid bits in the return data to what we actually use */
3052 oinfo->oi_oa->o_valid = OBD_MD_FLID;
3053 obdo_from_inode(oinfo->oi_oa, dentry->d_inode, FILTER_VALID_FLAGS);
3059 /* this should be enabled/disabled in condition to enabled/disabled large
3060 * inodes (fast EAs) in backing store FS. */
3061 int filter_update_fidea(struct obd_export *exp, struct inode *inode,
3062 void *handle, struct obdo *oa)
3064 struct obd_device *obd = exp->exp_obd;
3068 if (oa->o_valid & OBD_MD_FLFID) {
3069 struct filter_fid ff;
3071 if (!(oa->o_valid & OBD_MD_FLGROUP))
3073 /* packing fid and converting it to LE for storing into EA.
3074 * Here ->o_stripe_idx should be filled by LOV and rest of
3075 * fields - by client. */
3076 ff.ff_fid.id = cpu_to_le64(oa->o_fid);
3077 ff.ff_fid.f_type = cpu_to_le32(oa->o_stripe_idx);
3078 ff.ff_fid.generation = cpu_to_le32(oa->o_generation);
3079 ff.ff_objid = cpu_to_le64(oa->o_id);
3080 ff.ff_group = cpu_to_le64(oa->o_gr);
3082 CDEBUG(D_INODE, "storing filter fid EA ("LPU64"/%u/%u"
3083 LPU64"/"LPU64")\n", oa->o_fid, oa->o_stripe_idx,
3084 oa->o_generation, oa->o_id, oa->o_gr);
3086 rc = fsfilt_set_md(obd, inode, handle, &ff, sizeof(ff), "fid");
3088 CERROR("store fid in object failed! rc: %d\n", rc);
3090 CDEBUG(D_HA, "OSS object without fid info!\n");
3096 /* this is called from filter_truncate() until we have filter_punch() */
3097 int filter_setattr_internal(struct obd_export *exp, struct dentry *dentry,
3098 struct obdo *oa, struct obd_trans_info *oti)
3100 unsigned int orig_ids[MAXQUOTAS] = {0, 0};
3101 struct llog_cookie *fcc = NULL;
3102 struct filter_obd *filter;
3103 int rc, err, locked = 0, sync = 0;
3104 unsigned int ia_valid;
3105 struct inode *inode;
3110 LASSERT(dentry != NULL);
3111 LASSERT(!IS_ERR(dentry));
3113 inode = dentry->d_inode;
3114 LASSERT(inode != NULL);
3116 filter = &exp->exp_obd->u.filter;
3117 iattr_from_obdo(&iattr, oa, oa->o_valid);
3118 ia_valid = iattr.ia_valid;
3120 if (oa->o_valid & OBD_MD_FLCOOKIE) {
3121 OBD_ALLOC(fcc, sizeof(*fcc));
3123 *fcc = oa->o_lcookie;
3126 if (ia_valid & ATTR_SIZE || ia_valid & (ATTR_UID | ATTR_GID)) {
3128 LOCK_INODE_MUTEX(inode);
3132 /* If the inode still has SUID+SGID bits set (see filter_precreate())
3133 * then we will accept the UID+GID sent by the client during write for
3134 * initializing the ownership of this inode. We only allow this to
3135 * happen once so clear these bits in setattr. In 2.6 kernels it is
3136 * possible to get ATTR_UID and ATTR_GID separately, so we only clear
3137 * the flags that are actually being set. */
3138 if (ia_valid & (ATTR_UID | ATTR_GID)) {
3139 CDEBUG(D_INODE, "update UID/GID to %lu/%lu\n",
3140 (unsigned long)oa->o_uid, (unsigned long)oa->o_gid);
3142 if ((inode->i_mode & S_ISUID) && (ia_valid & ATTR_UID)) {
3143 if (!(ia_valid & ATTR_MODE)) {
3144 iattr.ia_mode = inode->i_mode;
3145 iattr.ia_valid |= ATTR_MODE;
3147 iattr.ia_mode &= ~S_ISUID;
3149 if ((inode->i_mode & S_ISGID) && (ia_valid & ATTR_GID)) {
3150 if (!(iattr.ia_valid & ATTR_MODE)) {
3151 iattr.ia_mode = inode->i_mode;
3152 iattr.ia_valid |= ATTR_MODE;
3154 iattr.ia_mode &= ~S_ISGID;
3157 orig_ids[USRQUOTA] = inode->i_uid;
3158 orig_ids[GRPQUOTA] = inode->i_gid;
3159 handle = fsfilt_start_log(exp->exp_obd, inode,
3160 FSFILT_OP_SETATTR, oti, 1);
3162 GOTO(out_unlock, rc = PTR_ERR(handle));
3164 /* update inode EA only once when inode is suid bit marked. As
3165 * on 2.6.x UID and GID may be set separately, we check here
3166 * only one of them to avoid double setting. */
3167 if (inode->i_mode & S_ISUID)
3168 filter_update_fidea(exp, inode, handle, oa);
3170 handle = fsfilt_start(exp->exp_obd, inode,
3171 FSFILT_OP_SETATTR, oti);
3173 GOTO(out_unlock, rc = PTR_ERR(handle));
3175 if (oa->o_valid & OBD_MD_FLFLAGS) {
3176 rc = fsfilt_iocontrol(exp->exp_obd, inode, NULL,
3177 EXT3_IOC_SETFLAGS, (long)&oa->o_flags);
3179 rc = fsfilt_setattr(exp->exp_obd, dentry, handle, &iattr, 1);
3181 /* set cancel cookie callback function */
3182 sync = fsfilt_add_journal_cb(exp->exp_obd, 0, handle,
3183 filter_cancel_cookies_cb,
3187 if (OBD_FAIL_CHECK(OBD_FAIL_OST_SETATTR_CREDITS))
3188 fsfilt_extend(exp->exp_obd, inode, 0, handle);
3190 /* The truncate might have used up our transaction credits. Make
3191 * sure we have one left for the last_rcvd update. */
3192 err = fsfilt_extend(exp->exp_obd, inode, 1, handle);
3194 rc = filter_finish_transno(exp, oti, rc, sync);
3196 filter_cancel_cookies_cb(exp->exp_obd, 0, fcc, rc);
3200 err = fsfilt_commit(exp->exp_obd, inode, handle, 0);
3202 CERROR("error on commit, err = %d\n", err);
3210 /* Let's flush truncated page on disk immediately, then we can
3211 * avoid need to search for page aliases before directio writes
3212 * and this sort of stuff at expense of somewhat slower
3213 * truncates not on a page boundary. I believe this is the only
3214 * place in filter code that can lead to pages getting to
3215 * pagecache so far. */
3216 filter_clear_truncated_page(inode);
3217 UNLOCK_INODE_MUTEX(inode);
3224 UNLOCK_INODE_MUTEX(inode);
3227 OBD_FREE(fcc, sizeof(*fcc));
3229 /* trigger quota release */
3230 if (ia_valid & (ATTR_SIZE | ATTR_UID | ATTR_GID)) {
3231 unsigned int cur_ids[MAXQUOTAS] = {oa->o_uid, oa->o_gid};
3232 int rc2 = lquota_adjust(filter_quota_interface_ref,
3233 exp->exp_obd, cur_ids,
3234 orig_ids, rc, FSFILT_OP_SETATTR);
3235 CDEBUG(rc2 ? D_ERROR : D_QUOTA,
3236 "filter adjust qunit. (rc:%d)\n", rc2);
3241 /* this is called from filter_truncate() until we have filter_punch() */
3242 int filter_setattr(struct obd_export *exp, struct obd_info *oinfo,
3243 struct obd_trans_info *oti)
3245 struct ldlm_res_id res_id;
3246 struct filter_mod_data *fmd;
3247 struct lvfs_run_ctxt saved;
3248 struct filter_obd *filter;
3249 struct ldlm_resource *res;
3250 struct dentry *dentry;
3254 osc_build_res_name(oinfo->oi_oa->o_id, oinfo->oi_oa->o_gr, &res_id);
3255 rc = filter_auth_capa(exp, NULL, oinfo_mdsno(oinfo),
3256 oinfo_capa(oinfo), CAPA_OPC_META_WRITE);
3260 /* This would be very bad - accidentally truncating a file when
3261 * changing the time or similar - bug 12203. */
3262 if (oinfo->oi_oa->o_valid & OBD_MD_FLSIZE &&
3263 oinfo->oi_policy.l_extent.end != OBD_OBJECT_EOF) {
3264 static char mdsinum[48];
3266 if (oinfo->oi_oa->o_valid & OBD_MD_FLFID)
3267 snprintf(mdsinum, sizeof(mdsinum) - 1,
3268 " of inode "LPU64"/%u", oinfo->oi_oa->o_fid,
3269 oinfo->oi_oa->o_generation);
3273 CERROR("%s: setattr from %s trying to truncate objid "LPU64
3275 exp->exp_obd->obd_name, obd_export_nid2str(exp),
3276 oinfo->oi_oa->o_id, mdsinum);
3280 dentry = __filter_oa2dentry(exp->exp_obd, oinfo->oi_oa,
3283 RETURN(PTR_ERR(dentry));
3285 filter = &exp->exp_obd->u.filter;
3286 push_ctxt(&saved, &exp->exp_obd->obd_lvfs_ctxt, NULL);
3289 if (oinfo->oi_oa->o_valid &
3290 (OBD_MD_FLMTIME | OBD_MD_FLATIME | OBD_MD_FLCTIME)) {
3291 fmd = filter_fmd_get(exp,oinfo->oi_oa->o_id,oinfo->oi_oa->o_gr);
3292 if (fmd && fmd->fmd_mactime_xid < oti->oti_xid)
3293 fmd->fmd_mactime_xid = oti->oti_xid;
3294 filter_fmd_put(exp, fmd);
3297 /* setting objects attributes (including owner/group) */
3298 rc = filter_setattr_internal(exp, dentry, oinfo->oi_oa, oti);
3300 GOTO(out_unlock, rc);
3302 res = ldlm_resource_get(exp->exp_obd->obd_namespace, NULL,
3303 &res_id, LDLM_EXTENT, 0);
3306 rc = ldlm_res_lvbo_update(res, NULL, 0, 0);
3307 ldlm_resource_putref(res);
3310 oinfo->oi_oa->o_valid = OBD_MD_FLID;
3312 /* Quota release need uid/gid info */
3313 obdo_from_inode(oinfo->oi_oa, dentry->d_inode,
3314 FILTER_VALID_FLAGS | OBD_MD_FLUID | OBD_MD_FLGID);
3320 pop_ctxt(&saved, &exp->exp_obd->obd_lvfs_ctxt, NULL);
3324 /* XXX identical to osc_unpackmd */
3325 static int filter_unpackmd(struct obd_export *exp, struct lov_stripe_md **lsmp,
3326 struct lov_mds_md *lmm, int lmm_bytes)
3332 if (lmm_bytes < sizeof (*lmm)) {
3333 CERROR("lov_mds_md too small: %d, need %d\n",
3334 lmm_bytes, (int)sizeof(*lmm));
3337 /* XXX LOV_MAGIC etc check? */
3339 if (lmm->lmm_object_id == cpu_to_le64(0)) {
3340 CERROR("lov_mds_md: zero lmm_object_id\n");
3345 lsm_size = lov_stripe_md_size(1);
3349 if (*lsmp != NULL && lmm == NULL) {
3350 OBD_FREE((*lsmp)->lsm_oinfo[0], sizeof(struct lov_oinfo));
3351 OBD_FREE(*lsmp, lsm_size);
3356 if (*lsmp == NULL) {
3357 OBD_ALLOC(*lsmp, lsm_size);
3361 OBD_ALLOC((*lsmp)->lsm_oinfo[0], sizeof(struct lov_oinfo));
3362 if ((*lsmp)->lsm_oinfo[0] == NULL) {
3363 OBD_FREE(*lsmp, lsm_size);
3366 loi_init((*lsmp)->lsm_oinfo[0]);
3370 /* XXX zero *lsmp? */
3371 (*lsmp)->lsm_object_id = le64_to_cpu (lmm->lmm_object_id);
3372 LASSERT((*lsmp)->lsm_object_id);
3375 (*lsmp)->lsm_maxbytes = LUSTRE_STRIPE_MAXBYTES;
3380 /* caller must hold fo_create_locks[oa->o_gr] */
3381 static int filter_destroy_precreated(struct obd_export *exp, struct obdo *oa,
3382 struct filter_obd *filter)
3384 struct obdo doa; /* XXX obdo on stack */
3390 LASSERT(oa->o_gr != 0);
3391 LASSERT(oa->o_valid & OBD_MD_FLGROUP);
3392 LASSERT(down_trylock(&filter->fo_create_locks[oa->o_gr]) != 0);
3394 memset(&doa, 0, sizeof(doa));
3396 doa.o_valid |= OBD_MD_FLGROUP;
3397 doa.o_gr = oa->o_gr;
3398 doa.o_mode = S_IFREG;
3400 if (!test_bit(doa.o_gr, &filter->fo_destroys_in_progress)) {
3401 CERROR("%s:["LPU64"] destroys_in_progress already cleared\n",
3402 exp->exp_obd->obd_name, doa.o_gr);
3406 last = filter_last_id(filter, doa.o_gr);
3408 CWARN("%s: deleting orphan objects from "LPU64" to "LPU64"\n",
3409 exp->exp_obd->obd_name, oa->o_id + 1, last);
3411 for (id = last; id > oa->o_id; id--) {
3413 rc = filter_destroy(exp, &doa, NULL, NULL, NULL);
3414 if (rc && rc != -ENOENT) /* this is pretty fatal... */
3415 CEMERG("error destroying precreate objid "LPU64": %d\n",
3417 filter_set_last_id(filter, id - 1, doa.o_gr);
3418 /* update last_id on disk periodically so that if we restart
3419 * we don't need to re-scan all of the just-deleted objects. */
3420 if ((id & 511) == 0)
3421 filter_update_last_objid(exp->exp_obd, doa.o_gr, 0);
3424 CDEBUG(D_HA, "%s: after destroy: set last_objids["LPU64"] = "LPU64"\n",
3425 exp->exp_obd->obd_name, doa.o_gr, oa->o_id);
3427 rc = filter_update_last_objid(exp->exp_obd, doa.o_gr, 1);
3428 clear_bit(doa.o_gr, &filter->fo_destroys_in_progress);
3433 static int filter_precreate(struct obd_device *obd, struct obdo *oa,
3434 obd_gr group, int *num);
3435 /* returns a negative error or a nonnegative number of files to create */
3436 static int filter_handle_precreate(struct obd_export *exp, struct obdo *oa,
3437 obd_gr group, struct obd_trans_info *oti)
3439 struct obd_device *obd = exp->exp_obd;
3440 struct filter_obd *filter = &obd->u.filter;
3444 /* delete orphans request */
3445 if ((oa->o_valid & OBD_MD_FLFLAGS) && (oa->o_flags & OBD_FL_DELORPHAN)){
3446 if (oti->oti_conn_cnt < exp->exp_conn_cnt) {
3447 CERROR("%s: dropping old orphan cleanup request\n",
3451 /* This causes inflight precreates to abort and drop lock */
3452 set_bit(group, &filter->fo_destroys_in_progress);
3453 down(&filter->fo_create_locks[group]);
3454 if (!test_bit(group, &filter->fo_destroys_in_progress)) {
3455 CERROR("%s:["LPU64"] destroys_in_progress already cleared\n",
3456 exp->exp_obd->obd_name, group);
3457 up(&filter->fo_create_locks[group]);
3460 diff = oa->o_id - filter_last_id(filter, group);
3461 CDEBUG(D_HA, "filter_last_id() = "LPU64" -> diff = %d\n",
3462 filter_last_id(filter, group), diff);
3464 if (-diff > OST_MAX_PRECREATE) {
3465 CERROR("%s: ignoring bogus orphan destroy request: "
3466 "obdid "LPU64" last_id "LPU64"\n", obd->obd_name,
3467 oa->o_id, filter_last_id(filter, group));
3468 /* FIXME: should reset precreate_next_id on MDS */
3469 GOTO(out, rc = -EINVAL);
3472 rc = filter_destroy_precreated(exp, oa, filter);
3474 CERROR("%s: unable to write lastobjid, but "
3475 "orphans were deleted\n", obd->obd_name);
3478 /* XXX: Used by MDS for the first time! */
3479 clear_bit(group, &filter->fo_destroys_in_progress);
3482 down(&filter->fo_create_locks[group]);
3483 if (oti->oti_conn_cnt < exp->exp_conn_cnt) {
3484 CERROR("%s: dropping old precreate request\n",
3488 /* only precreate if group == 0 and o_id is specfied */
3489 if (group < FILTER_GROUP_MDS0 || oa->o_id == 0)
3492 diff = oa->o_id - filter_last_id(filter, group);
3493 CDEBUG(D_RPCTRACE, "filter_last_id() = "LPU64" -> diff = %d\n",
3494 filter_last_id(filter, group), diff);
3496 LASSERTF(diff >= 0,"%s: "LPU64" - "LPU64" = %d\n",obd->obd_name,
3497 oa->o_id, filter_last_id(filter, group), diff);
3501 oa->o_id = filter_last_id(&obd->u.filter, group);
3502 rc = filter_precreate(obd, oa, group, &diff);
3503 oa->o_id = filter_last_id(&obd->u.filter, group);
3505 oa->o_valid = OBD_MD_FLID | OBD_MD_FLGROUP;
3508 /* else diff == 0 */
3511 up(&filter->fo_create_locks[group]);
3515 static int filter_statfs(struct obd_device *obd, struct obd_statfs *osfs,
3516 __u64 max_age, __u32 flags)
3518 struct filter_obd *filter = &obd->u.filter;
3519 int blockbits = obd->u.obt.obt_sb->s_blocksize_bits;
3523 /* at least try to account for cached pages. its still racey and
3524 * might be under-reporting if clients haven't announced their
3525 * caches with brw recently */
3526 spin_lock(&obd->obd_osfs_lock);
3527 rc = fsfilt_statfs(obd, obd->u.obt.obt_sb, max_age);
3528 memcpy(osfs, &obd->obd_osfs, sizeof(*osfs));
3529 spin_unlock(&obd->obd_osfs_lock);
3531 CDEBUG(D_SUPER | D_CACHE, "blocks cached "LPU64" granted "LPU64
3532 " pending "LPU64" free "LPU64" avail "LPU64"\n",
3533 filter->fo_tot_dirty, filter->fo_tot_granted,
3534 filter->fo_tot_pending,
3535 osfs->os_bfree << blockbits, osfs->os_bavail << blockbits);
3537 filter_grant_sanity_check(obd, __FUNCTION__);
3539 osfs->os_bavail -= min(osfs->os_bavail, GRANT_FOR_LLOG(obd) +
3540 ((filter->fo_tot_dirty + filter->fo_tot_pending +
3541 osfs->os_bsize - 1) >> blockbits));
3543 /* set EROFS to state field if FS is mounted as RDONLY. The goal is to
3544 * stop creating files on MDS if OST is not good shape to create
3546 osfs->os_state = (filter->fo_obt.obt_sb->s_flags & MS_RDONLY) ?
3551 static int filter_use_existing_obj(struct obd_device *obd,
3552 struct dentry *dchild, void **handle,
3555 struct inode *inode = dchild->d_inode;
3559 if ((inode->i_mode & (S_ISUID | S_ISGID)) == (S_ISUID|S_ISGID))
3562 *handle = fsfilt_start_log(obd, inode, FSFILT_OP_SETATTR, NULL, 1);
3563 if (IS_ERR(*handle))
3564 return PTR_ERR(*handle);
3566 iattr.ia_valid = ATTR_MODE;
3567 iattr.ia_mode = S_ISUID | S_ISGID |0666;
3568 rc = fsfilt_setattr(obd, dchild, *handle, &iattr, 1);
3576 /* We rely on the fact that only one thread will be creating files in a given
3577 * group at a time, which is why we don't need an atomic filter_get_new_id.
3578 * Even if we had that atomic function, the following race would exist:
3580 * thread 1: gets id x from filter_next_id
3581 * thread 2: gets id (x + 1) from filter_next_id
3582 * thread 2: creates object (x + 1)
3583 * thread 1: tries to create object x, gets -ENOSPC
3585 * Caller must hold fo_create_locks[group]
3587 static int filter_precreate(struct obd_device *obd, struct obdo *oa,
3588 obd_gr group, int *num)
3590 struct dentry *dchild = NULL, *dparent = NULL;
3591 struct filter_obd *filter;
3592 struct obd_statfs *osfs;
3593 int err = 0, rc = 0, recreate_obj = 0, i;
3594 cfs_time_t enough_time = cfs_time_shift(DISK_TIMEOUT/2);
3596 void *handle = NULL;
3599 filter = &obd->u.filter;
3601 LASSERT(down_trylock(&filter->fo_create_locks[group]) != 0);
3603 OBD_FAIL_TIMEOUT(OBD_FAIL_TGT_DELAY_PRECREATE, obd_timeout / 2);
3605 if ((oa->o_valid & OBD_MD_FLFLAGS) &&
3606 (oa->o_flags & OBD_FL_RECREATE_OBJS)) {
3609 OBD_ALLOC(osfs, sizeof(*osfs));
3612 rc = filter_statfs(obd, osfs, cfs_time_current_64() - HZ, 0);
3613 if (rc == 0 && osfs->os_bavail < (osfs->os_blocks >> 10)) {
3614 CDEBUG(D_RPCTRACE,"%s: not enough space for create "
3615 LPU64"\n", obd->obd_name, osfs->os_bavail <<
3616 filter->fo_vfsmnt->mnt_sb->s_blocksize_bits);
3620 OBD_FREE(osfs, sizeof(*osfs));
3625 CDEBUG(D_RPCTRACE, "%s: precreating %d objects in group "LPU64
3626 " at "LPU64"\n", obd->obd_name, *num, group, oa->o_id);
3628 for (i = 0; i < *num && err == 0; i++) {
3629 int cleanup_phase = 0;
3631 if (test_bit(group, &filter->fo_destroys_in_progress)) {
3632 CWARN("%s: create aborted by destroy\n",
3641 last_id = filter_last_id(filter, group);
3642 if (next_id > last_id) {
3643 CERROR("Error: Trying to recreate obj greater"
3644 "than last id "LPD64" > "LPD64"\n",
3646 GOTO(cleanup, rc = -EINVAL);
3649 next_id = filter_last_id(filter, group) + 1;
3651 CDEBUG(D_INFO, "precreate objid "LPU64"\n", next_id);
3653 dparent = filter_parent_lock(obd, group, next_id);
3654 if (IS_ERR(dparent))
3655 GOTO(cleanup, rc = PTR_ERR(dparent));
3656 cleanup_phase = 1; /* filter_parent_unlock(dparent) */
3658 dchild = filter_fid2dentry(obd, dparent, group, next_id);
3660 GOTO(cleanup, rc = PTR_ERR(dchild));
3661 cleanup_phase = 2; /* f_dput(dchild) */
3663 if (dchild->d_inode != NULL) {
3664 /* This would only happen if lastobjid was bad on disk*/
3665 /* Could also happen if recreating missing obj but it
3666 * already exists. */
3668 CERROR("%s: recreating existing object %.*s?\n",
3669 obd->obd_name, dchild->d_name.len,
3670 dchild->d_name.name);
3672 /* Use these existing objects if they are
3674 if (dchild->d_inode->i_size == 0) {
3675 rc = filter_use_existing_obj(obd,dchild,
3676 &handle, &cleanup_phase);
3683 CERROR("%s: Serious error: objid %.*s already "
3684 "exists; is this filesystem corrupt?\n",
3685 obd->obd_name, dchild->d_name.len,
3686 dchild->d_name.name);
3689 GOTO(cleanup, rc = -EEXIST);
3692 handle = fsfilt_start_log(obd, dparent->d_inode,
3693 FSFILT_OP_CREATE, NULL, 1);
3695 GOTO(cleanup, rc = PTR_ERR(handle));
3698 /* We mark object SUID+SGID to flag it for accepting UID+GID
3699 * from client on first write. Currently the permission bits
3700 * on the OST are never used, so this is OK. */
3701 rc = ll_vfs_create(dparent->d_inode, dchild,
3702 S_IFREG | S_ISUID | S_ISGID | 0666, NULL);
3704 CERROR("create failed rc = %d\n", rc);
3709 if (!recreate_obj) {
3710 filter_set_last_id(filter, next_id, group);
3711 err = filter_update_last_objid(obd, group, 0);
3713 CERROR("unable to write lastobjid "
3714 "but file created\n");
3718 switch(cleanup_phase) {
3720 err = fsfilt_commit(obd, dparent->d_inode, handle, 0);
3722 CERROR("error on commit, err = %d\n", err);
3729 filter_parent_unlock(dparent);
3736 if (time_after(jiffies, enough_time)) {
3738 "%s: precreate slow - want %d got %d \n",
3739 obd->obd_name, *num, i);
3746 "%s: created %d objects for group "LPU64": "LPU64" rc %d\n",
3747 obd->obd_name, i, group, filter->fo_last_objids[group], rc);
3752 static int filter_create(struct obd_export *exp, struct obdo *oa,
3753 struct lov_stripe_md **ea, struct obd_trans_info *oti)
3755 struct filter_export_data *fed;
3756 struct obd_device *obd = NULL;
3757 struct filter_obd *filter;
3758 struct lvfs_run_ctxt saved;
3759 struct lov_stripe_md *lsm = NULL;
3760 int rc = 0, diff, group = oa->o_gr;
3763 if (!(oa->o_valid & OBD_MD_FLGROUP) || group == 0) {
3764 CERROR("!!! nid %s sent invalid object group %d\n",
3765 obd_export_nid2str(exp), group);
3770 fed = &exp->exp_filter_data;
3771 filter = &obd->u.filter;
3773 if (fed->fed_group != group) {
3774 CERROR("!!! this export (nid %s) used object group %d "
3775 "earlier; now it's trying to use group %d! This could "
3776 "be a bug in the MDS. Please report to "
3777 "http://bugzilla.lustre.org/\n",
3778 obd_export_nid2str(exp), fed->fed_group, group);
3782 CDEBUG(D_INFO, "filter_create(od->o_gr="LPU64",od->o_id="LPU64")\n",
3783 oa->o_gr, oa->o_id);
3787 rc = obd_alloc_memmd(exp, &lsm);
3794 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
3796 if ((oa->o_valid & OBD_MD_FLFLAGS) &&
3797 (oa->o_flags & OBD_FL_RECREATE_OBJS)) {
3798 if (oa->o_id > filter_last_id(filter, oa->o_gr)) {
3799 CERROR("recreate objid "LPU64" > last id "LPU64"\n",
3800 oa->o_id, filter_last_id(filter,
3805 down(&filter->fo_create_locks[oa->o_gr]);
3806 rc = filter_precreate(obd, oa, oa->o_gr, &diff);
3807 up(&filter->fo_create_locks[oa->o_gr]);
3810 rc = filter_handle_precreate(exp, oa, oa->o_gr, oti);
3813 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
3814 if (rc && ea != NULL && *ea != lsm) {
3815 obd_free_memmd(exp, &lsm);
3816 } else if (rc == 0 && ea != NULL) {
3817 /* XXX LOV STACKING: the lsm that is passed to us from
3818 * LOV does not have valid lsm_oinfo data structs, so
3819 * don't go touching that. This needs to be fixed in a
3821 lsm->lsm_object_id = oa->o_id;
3828 int filter_destroy(struct obd_export *exp, struct obdo *oa,
3829 struct lov_stripe_md *md, struct obd_trans_info *oti,
3830 struct obd_export *md_exp)
3832 unsigned int qcids[MAXQUOTAS] = {0, 0};
3833 struct obd_device *obd;
3834 struct filter_obd *filter;
3835 struct dentry *dchild = NULL, *dparent = NULL;
3836 struct lvfs_run_ctxt saved;
3837 void *handle = NULL;
3838 struct llog_cookie *fcc = NULL;
3839 int rc, rc2, cleanup_phase = 0, sync = 0;
3843 LASSERT(oa->o_valid & OBD_MD_FLGROUP);
3846 filter = &obd->u.filter;
3848 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
3851 dchild = filter_fid2dentry(obd, NULL, oa->o_gr, oa->o_id);
3853 GOTO(cleanup, rc = PTR_ERR(dchild));
3856 if (dchild->d_inode == NULL) {
3857 CDEBUG(D_INODE, "destroying non-existent object "LPU64"\n",
3859 /* If object already gone, cancel cookie right now */
3860 if (oa->o_valid & OBD_MD_FLCOOKIE) {
3861 struct llog_ctxt *ctxt;
3862 struct obd_llog_group *olg;
3863 fcc = &oa->o_lcookie;
3864 olg = filter_find_olg(obd, oa->o_gr);
3866 CERROR(" %s: can not find olg of group %d\n",
3867 obd->obd_name, (int)oa->o_gr);
3868 GOTO(cleanup, rc = PTR_ERR(olg));
3870 llog_group_set_export(olg, exp);
3872 ctxt = llog_group_get_ctxt(olg, fcc->lgc_subsys + 1);
3873 llog_cancel(ctxt, NULL, 1, fcc, 0);
3874 llog_ctxt_put(ctxt);
3875 fcc = NULL; /* we didn't allocate fcc, don't free it */
3877 GOTO(cleanup, rc = -ENOENT);
3880 filter_prepare_destroy(obd, oa->o_id, oa->o_gr);
3882 /* Our MDC connection is established by the MDS to us */
3883 if (oa->o_valid & OBD_MD_FLCOOKIE) {
3884 OBD_ALLOC(fcc, sizeof(*fcc));
3886 *fcc = oa->o_lcookie;
3888 DQUOT_INIT(dchild->d_inode);
3890 /* we're gonna truncate it first in order to avoid possible deadlock:
3892 * open trasaction open transaction
3893 * down(i_zombie) down(i_zombie)
3894 * restart transaction
3895 * (see BUG 4180) -bzzz
3897 LOCK_INODE_MUTEX(dchild->d_inode);
3898 handle = fsfilt_start_log(obd, dchild->d_inode, FSFILT_OP_SETATTR,
3900 if (IS_ERR(handle)) {
3901 UNLOCK_INODE_MUTEX(dchild->d_inode);
3902 GOTO(cleanup, rc = PTR_ERR(handle));
3905 iattr.ia_valid = ATTR_SIZE;
3907 rc = fsfilt_setattr(obd, dchild, handle, &iattr, 1);
3908 rc2 = fsfilt_commit(obd, dchild->d_inode, handle, 0);
3909 UNLOCK_INODE_MUTEX(dchild->d_inode);
3913 GOTO(cleanup, rc = rc2);
3915 /* We don't actually need to lock the parent until we are unlinking
3916 * here, and not while truncating above. That avoids holding the
3917 * parent lock for a long time during truncate, which can block other
3918 * threads from doing anything to objects in that directory. bug 7171 */
3919 dparent = filter_parent_lock(obd, oa->o_gr, oa->o_id);
3920 if (IS_ERR(dparent))
3921 GOTO(cleanup, rc = PTR_ERR(dparent));
3922 cleanup_phase = 3; /* filter_parent_unlock */
3924 LOCK_INODE_MUTEX(dchild->d_inode);
3925 handle = fsfilt_start_log(obd, dparent->d_inode,FSFILT_OP_UNLINK,oti,1);
3926 if (IS_ERR(handle)) {
3927 UNLOCK_INODE_MUTEX(dchild->d_inode);
3928 GOTO(cleanup, rc = PTR_ERR(handle));
3930 cleanup_phase = 4; /* fsfilt_commit */
3932 /* Quota release need uid/gid of inode */
3933 obdo_from_inode(oa, dchild->d_inode, OBD_MD_FLUID|OBD_MD_FLGID);
3935 filter_fmd_drop(exp, oa->o_id, oa->o_gr);
3937 /* this drops dchild->d_inode->i_mutex unconditionally */
3938 rc = filter_destroy_internal(obd, oa->o_id, oa->o_gr, dparent, dchild);
3942 switch(cleanup_phase) {
3945 sync = fsfilt_add_journal_cb(obd, 0, oti ?
3946 oti->oti_handle : handle,
3947 filter_cancel_cookies_cb,
3949 /* If add_journal_cb failed, then filter_finish_transno
3950 * will commit the handle and we will do a sync
3951 * on commit. then we call callback directly to free
3954 rc = filter_finish_transno(exp, oti, rc, sync);
3956 filter_cancel_cookies_cb(obd, 0, fcc, rc);
3959 rc2 = fsfilt_commit(obd, dparent->d_inode, handle, 0);
3961 CERROR("error on commit, err = %d\n", rc2);
3968 filter_parent_unlock(dparent);
3972 OBD_FREE(fcc, sizeof(*fcc));
3974 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
3977 CERROR("invalid cleanup_phase %d\n", cleanup_phase);
3981 /* trigger quota release */
3982 qcids[USRQUOTA] = oa->o_uid;
3983 qcids[GRPQUOTA] = oa->o_gid;
3984 rc2 = lquota_adjust(filter_quota_interface_ref, obd, qcids, NULL, rc,
3988 CDEBUG(D_QUOTA, "filter adjust qunit! (rc:%d)\n", rc2);
3992 /* NB start and end are used for punch, but not truncate */
3993 static int filter_truncate(struct obd_export *exp, struct obd_info *oinfo,
3994 struct obd_trans_info *oti,
3995 struct ptlrpc_request_set *rqset)
4000 if (oinfo->oi_policy.l_extent.end != OBD_OBJECT_EOF) {
4001 CERROR("PUNCH not supported, only truncate: end = "LPX64"\n",
4002 oinfo->oi_policy.l_extent.end);
4006 CDEBUG(D_INODE, "calling truncate for object "LPU64", valid = "LPX64
4007 ", o_size = "LPD64"\n", oinfo->oi_oa->o_id,
4008 oinfo->oi_oa->o_valid, oinfo->oi_policy.l_extent.start);
4010 rc = filter_auth_capa(exp, NULL, oinfo_mdsno(oinfo),
4011 oinfo_capa(oinfo), CAPA_OPC_OSS_TRUNC);
4015 oinfo->oi_oa->o_size = oinfo->oi_policy.l_extent.start;
4016 rc = filter_setattr(exp, oinfo, oti);
4020 static int filter_sync(struct obd_export *exp, struct obdo *oa,
4021 struct lov_stripe_md *lsm, obd_off start, obd_off end,
4024 struct lvfs_run_ctxt saved;
4025 struct filter_obd *filter;
4026 struct dentry *dentry;
4030 rc = filter_auth_capa(exp, NULL, obdo_mdsno(oa),
4031 (struct lustre_capa *)capa, CAPA_OPC_OSS_WRITE);
4035 filter = &exp->exp_obd->u.filter;
4037 /* an objid of zero is taken to mean "sync whole filesystem" */
4038 if (!oa || !(oa->o_valid & OBD_MD_FLID)) {
4039 rc = fsfilt_sync(exp->exp_obd, filter->fo_obt.obt_sb);
4040 /* flush any remaining cancel messages out to the target */
4041 filter_sync_llogs(exp->exp_obd, exp);
4045 dentry = filter_oa2dentry(exp->exp_obd, oa);
4047 RETURN(PTR_ERR(dentry));
4049 push_ctxt(&saved, &exp->exp_obd->obd_lvfs_ctxt, NULL);
4051 LOCK_INODE_MUTEX(dentry->d_inode);
4053 rc = filemap_fdatawrite(dentry->d_inode->i_mapping);
4055 /* just any file to grab fsync method - "file" arg unused */
4056 struct file *file = filter->fo_rcvd_filp;
4058 if (file->f_op && file->f_op->fsync)
4059 rc = file->f_op->fsync(NULL, dentry, 1);
4061 rc2 = filemap_fdatawait(dentry->d_inode->i_mapping);
4065 UNLOCK_INODE_MUTEX(dentry->d_inode);
4067 oa->o_valid = OBD_MD_FLID;
4068 obdo_from_inode(oa, dentry->d_inode, FILTER_VALID_FLAGS);
4070 pop_ctxt(&saved, &exp->exp_obd->obd_lvfs_ctxt, NULL);
4076 static int filter_get_info(struct obd_export *exp, __u32 keylen,
4077 void *key, __u32 *vallen, void *val,
4078 struct lov_stripe_md *lsm)
4080 struct obd_device *obd;
4083 obd = class_exp2obd(exp);
4085 CDEBUG(D_IOCTL, "invalid client export %p\n", exp);
4089 if (KEY_IS(KEY_BLOCKSIZE)) {
4090 __u32 *blocksize = val;
4092 if (*vallen < sizeof(*blocksize))
4094 *blocksize = obd->u.obt.obt_sb->s_blocksize;
4096 *vallen = sizeof(*blocksize);
4100 if (KEY_IS(KEY_BLOCKSIZE_BITS)) {
4101 __u32 *blocksize_bits = val;
4102 if (blocksize_bits) {
4103 if (*vallen < sizeof(*blocksize_bits))
4105 *blocksize_bits = obd->u.obt.obt_sb->s_blocksize_bits;
4107 *vallen = sizeof(*blocksize_bits);
4111 if (KEY_IS(KEY_LAST_ID)) {
4112 obd_id *last_id = val;
4113 /* FIXME: object groups */
4115 if (*vallen < sizeof(*last_id))
4117 *last_id = filter_last_id(&obd->u.filter,
4118 exp->exp_filter_data.fed_group);
4120 *vallen = sizeof(*last_id);
4124 if (KEY_IS(KEY_FIEMAP)) {
4125 struct ll_fiemap_info_key *fm_key = key;
4126 struct dentry *dentry;
4127 struct ll_user_fiemap *fiemap = val;
4128 struct lvfs_run_ctxt saved;
4131 if (fiemap == NULL) {
4132 *vallen = fiemap_count_to_size(
4133 fm_key->fiemap.fm_extent_count);
4137 dentry = __filter_oa2dentry(exp->exp_obd, &fm_key->oa,
4140 RETURN(PTR_ERR(dentry));
4142 memcpy(fiemap, &fm_key->fiemap, sizeof(*fiemap));
4143 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
4144 rc = fsfilt_iocontrol(obd, dentry->d_inode, NULL,
4145 EXT3_IOC_FIEMAP, (long)fiemap);
4150 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
4156 CDEBUG(D_IOCTL, "invalid key\n");
4160 static int filter_set_info_async(struct obd_export *exp, __u32 keylen,
4161 void *key, __u32 vallen, void *val,
4162 struct ptlrpc_request_set *set)
4164 struct obd_device *obd;
4165 struct obd_llog_group *olg;
4166 struct llog_ctxt *ctxt;
4172 CDEBUG(D_IOCTL, "invalid export %p\n", exp);
4176 if (KEY_IS(KEY_CAPA_KEY)) {
4177 rc = filter_update_capa_key(obd, (struct lustre_capa_key *)val);
4179 CERROR("filter update capability key failed: %d\n", rc);
4183 if (KEY_IS(KEY_REVIMP_UPD)) {
4184 filter_revimp_update(exp);
4188 if (!KEY_IS(KEY_MDS_CONN))
4191 LCONSOLE_WARN("%s: received MDS connection from %s\n", obd->obd_name,
4192 obd_export_nid2str(exp));
4193 obd->u.filter.fo_mdc_conn.cookie = exp->exp_handle.h_cookie;
4195 /* setup llog imports */
4196 LASSERT(val != NULL);
4197 group = (int)(*(__u32 *)val);
4198 LASSERT(group >= FILTER_GROUP_MDS0);
4200 olg = filter_find_create_olg(obd, group);
4202 RETURN(PTR_ERR(olg));
4204 llog_group_set_export(olg, exp);
4206 ctxt = llog_group_get_ctxt(olg, LLOG_MDS_OST_REPL_CTXT);
4207 LASSERTF(ctxt != NULL, "ctxt is null\n"),
4209 rc = llog_receptor_accept(ctxt, exp->exp_imp_reverse);
4210 llog_ctxt_put(ctxt);
4212 lquota_setinfo(filter_quota_interface_ref, exp, obd);
4217 int filter_iocontrol(unsigned int cmd, struct obd_export *exp,
4218 int len, void *karg, void *uarg)
4220 struct obd_device *obd = exp->exp_obd;
4221 struct obd_ioctl_data *data = karg;
4225 case OBD_IOC_ABORT_RECOVERY: {
4226 CERROR("aborting recovery for device %s\n", obd->obd_name);
4227 target_stop_recovery_thread(obd);
4231 case OBD_IOC_SYNC: {
4232 CDEBUG(D_RPCTRACE, "syncing ost %s\n", obd->obd_name);
4233 rc = fsfilt_sync(obd, obd->u.obt.obt_sb);
4237 case OBD_IOC_SET_READONLY: {
4239 struct super_block *sb = obd->u.obt.obt_sb;
4240 struct inode *inode = sb->s_root->d_inode;
4241 BDEVNAME_DECLARE_STORAGE(tmp);
4242 CERROR("*** setting device %s read-only ***\n",
4243 ll_bdevname(sb, tmp));
4245 handle = fsfilt_start(obd, inode, FSFILT_OP_MKNOD, NULL);
4246 if (!IS_ERR(handle))
4247 rc = fsfilt_commit(obd, inode, handle, 1);
4249 CDEBUG(D_HA, "syncing ost %s\n", obd->obd_name);
4250 rc = fsfilt_sync(obd, obd->u.obt.obt_sb);
4252 lvfs_set_rdonly(obd, obd->u.obt.obt_sb);
4256 case OBD_IOC_CATLOGLIST: {
4257 rc = llog_catalog_list(obd, 1, data);
4261 case OBD_IOC_LLOG_CANCEL:
4262 case OBD_IOC_LLOG_REMOVE:
4263 case OBD_IOC_LLOG_INFO:
4264 case OBD_IOC_LLOG_PRINT: {
4265 /* FIXME to be finished */
4266 RETURN(-EOPNOTSUPP);
4268 struct llog_ctxt *ctxt = NULL;
4270 push_ctxt(&saved, &ctxt->loc_exp->exp_obd->obd_lvfs_ctxt, NULL);
4271 rc = llog_ioctl(ctxt, cmd, data);
4272 pop_ctxt(&saved, &ctxt->loc_exp->exp_obd->obd_lvfs_ctxt, NULL);
4285 static int filter_health_check(struct obd_device *obd)
4287 #ifdef USE_HEALTH_CHECK_WRITE
4288 struct filter_obd *filter = &obd->u.filter;
4293 * health_check to return 0 on healthy
4294 * and 1 on unhealthy.
4296 if (obd->u.obt.obt_sb->s_flags & MS_RDONLY)
4299 #ifdef USE_HEALTH_CHECK_WRITE
4300 LASSERT(filter->fo_health_check_filp != NULL);
4301 rc |= !!lvfs_check_io_health(obd, filter->fo_health_check_filp);
4306 static struct dentry *filter_lvfs_fid2dentry(__u64 id, __u32 gen, __u64 gr,
4309 return filter_fid2dentry(data, NULL, gr, id);
4312 static int filter_process_config(struct obd_device *obd, obd_count len,
4315 struct lustre_cfg *lcfg = buf;
4316 struct lprocfs_static_vars lvars;
4319 switch (lcfg->lcfg_command) {
4320 case LCFG_SPTLRPC_CONF: {
4321 struct filter_obd *filter = &obd->u.filter;
4322 struct sptlrpc_conf_log *log;
4323 struct sptlrpc_rule_set tmp_rset;
4325 log = sptlrpc_conf_log_extract(lcfg);
4331 sptlrpc_rule_set_init(&tmp_rset);
4333 rc = sptlrpc_rule_set_from_log(&tmp_rset, log);
4335 CERROR("obd %s: failed get sptlrpc rules: %d\n",
4340 write_lock(&filter->fo_sptlrpc_lock);
4341 sptlrpc_rule_set_free(&filter->fo_sptlrpc_rset);
4342 filter->fo_sptlrpc_rset = tmp_rset;
4343 write_unlock(&filter->fo_sptlrpc_lock);
4345 sptlrpc_target_update_exp_flavor(obd, &tmp_rset);
4349 lprocfs_filter_init_vars(&lvars);
4351 rc = class_process_proc_param(PARAM_OST, lvars.obd_vars,
4359 static struct lvfs_callback_ops filter_lvfs_ops = {
4360 l_fid2dentry: filter_lvfs_fid2dentry,
4363 static struct obd_ops filter_obd_ops = {
4364 .o_owner = THIS_MODULE,
4365 .o_get_info = filter_get_info,
4366 .o_set_info_async = filter_set_info_async,
4367 .o_setup = filter_setup,
4368 .o_precleanup = filter_precleanup,
4369 .o_cleanup = filter_cleanup,
4370 .o_connect = filter_connect,
4371 .o_reconnect = filter_reconnect,
4372 .o_disconnect = filter_disconnect,
4373 .o_ping = filter_ping,
4374 .o_init_export = filter_init_export,
4375 .o_destroy_export = filter_destroy_export,
4376 .o_statfs = filter_statfs,
4377 .o_getattr = filter_getattr,
4378 .o_unpackmd = filter_unpackmd,
4379 .o_create = filter_create,
4380 .o_setattr = filter_setattr,
4381 .o_destroy = filter_destroy,
4382 .o_brw = filter_brw,
4383 .o_punch = filter_truncate,
4384 .o_sync = filter_sync,
4385 .o_preprw = filter_preprw,
4386 .o_commitrw = filter_commitrw,
4387 .o_llog_init = filter_llog_init,
4388 .o_llog_connect = filter_llog_connect,
4389 .o_llog_finish = filter_llog_finish,
4390 .o_iocontrol = filter_iocontrol,
4391 .o_health_check = filter_health_check,
4392 .o_process_config = filter_process_config,
4395 quota_interface_t *filter_quota_interface_ref;
4396 extern quota_interface_t filter_quota_interface;
4398 static int __init obdfilter_init(void)
4400 struct lprocfs_static_vars lvars;
4403 lprocfs_filter_init_vars(&lvars);
4405 request_module("lquota");
4406 OBD_ALLOC(obdfilter_created_scratchpad,
4407 OBDFILTER_CREATED_SCRATCHPAD_ENTRIES *
4408 sizeof(*obdfilter_created_scratchpad));
4409 if (obdfilter_created_scratchpad == NULL)
4412 ll_fmd_cachep = cfs_mem_cache_create("ll_fmd_cache",
4413 sizeof(struct filter_mod_data),
4416 GOTO(out, rc = -ENOMEM);
4418 filter_quota_interface_ref = PORTAL_SYMBOL_GET(filter_quota_interface);
4419 init_obd_quota_ops(filter_quota_interface_ref, &filter_obd_ops);
4421 rc = class_register_type(&filter_obd_ops, NULL, lvars.module_vars,
4422 LUSTRE_OST_NAME, NULL);
4426 err = cfs_mem_cache_destroy(ll_fmd_cachep);
4427 LASSERTF(err == 0, "Cannot destroy ll_fmd_cachep: rc %d\n",err);
4428 ll_fmd_cachep = NULL;
4430 if (filter_quota_interface_ref)
4431 PORTAL_SYMBOL_PUT(filter_quota_interface);
4433 OBD_FREE(obdfilter_created_scratchpad,
4434 OBDFILTER_CREATED_SCRATCHPAD_ENTRIES *
4435 sizeof(*obdfilter_created_scratchpad));
4441 static void __exit obdfilter_exit(void)
4443 if (filter_quota_interface_ref)
4444 PORTAL_SYMBOL_PUT(filter_quota_interface);
4446 if (ll_fmd_cachep) {
4447 int rc = cfs_mem_cache_destroy(ll_fmd_cachep);
4448 LASSERTF(rc == 0, "Cannot destroy ll_fmd_cachep: rc %d\n", rc);
4449 ll_fmd_cachep = NULL;
4452 class_unregister_type(LUSTRE_OST_NAME);
4453 OBD_FREE(obdfilter_created_scratchpad,
4454 OBDFILTER_CREATED_SCRATCHPAD_ENTRIES *
4455 sizeof(*obdfilter_created_scratchpad));
4458 MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
4459 MODULE_DESCRIPTION("Lustre Filtering OBD driver");
4460 MODULE_LICENSE("GPL");
4462 module_init(obdfilter_init);
4463 module_exit(obdfilter_exit);