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);
217 /* Mask error for already created
225 struct nid_stat *tmp = exp->exp_nid_stats;
226 LASSERT(tmp != NULL);
228 OBD_ALLOC(tmp->nid_brw_stats, sizeof(struct brw_stats));
229 if (tmp->nid_brw_stats == NULL)
232 init_brw_stats(tmp->nid_brw_stats);
233 rc = lprocfs_seq_create(exp->exp_nid_stats->nid_proc, "brw_stats",
234 0644, &filter_per_nid_stats_fops,
237 CWARN("Error adding the brw_stats file\n");
239 rc = lprocfs_init_rw_stats(obd, &exp->exp_nid_stats->nid_stats);
243 rc = lprocfs_register_stats(tmp->nid_proc, "stats",
247 /* Always add in ldlm_stats */
248 tmp->nid_ldlm_stats = lprocfs_alloc_stats(LDLM_LAST_OPC -
250 if (tmp->nid_ldlm_stats == NULL)
253 lprocfs_init_ldlm_stats(tmp->nid_ldlm_stats);
254 rc = lprocfs_register_stats(tmp->nid_proc, "ldlm_stats",
255 tmp->nid_ldlm_stats);
263 /* Add client data to the FILTER. We use a bitmap to locate a free space
264 * in the last_rcvd file if cl_idx is -1 (i.e. a new client).
265 * Otherwise, we have just read the data from the last_rcvd file and
266 * we know its offset. */
267 static int filter_client_add(struct obd_device *obd, struct obd_export *exp,
270 struct filter_obd *filter = &obd->u.filter;
271 struct filter_export_data *fed = &exp->exp_filter_data;
272 unsigned long *bitmap = filter->fo_last_rcvd_slots;
273 int new_client = (cl_idx == -1);
277 LASSERT(bitmap != NULL);
278 LASSERTF(cl_idx > -2, "%d\n", cl_idx);
281 if (strcmp(fed->fed_lcd->lcd_uuid, obd->obd_uuid.uuid) == 0)
284 /* the bitmap operations can handle cl_idx > sizeof(long) * 8, so
285 * there's no need for extra complication here
288 cl_idx = find_first_zero_bit(bitmap, LR_MAX_CLIENTS);
290 if (cl_idx >= LR_MAX_CLIENTS) {
291 CERROR("no room for %u client - fix LR_MAX_CLIENTS\n",
295 if (test_and_set_bit(cl_idx, bitmap)) {
296 cl_idx = find_next_zero_bit(bitmap, LR_MAX_CLIENTS,
301 if (test_and_set_bit(cl_idx, bitmap)) {
302 CERROR("FILTER client %d: bit already set in bitmap!\n",
308 fed->fed_lr_idx = cl_idx;
309 fed->fed_lr_off = le32_to_cpu(filter->fo_fsd->lsd_client_start) +
310 cl_idx * le16_to_cpu(filter->fo_fsd->lsd_client_size);
311 LASSERTF(fed->fed_lr_off > 0, "fed_lr_off = %llu\n", fed->fed_lr_off);
313 CDEBUG(D_INFO, "client at index %d (%llu) with UUID '%s' added\n",
314 fed->fed_lr_idx, fed->fed_lr_off, fed->fed_lcd->lcd_uuid);
317 struct lvfs_run_ctxt saved;
318 loff_t off = fed->fed_lr_off;
322 CDEBUG(D_INFO, "writing client lcd at idx %u (%llu) (len %u)\n",
323 fed->fed_lr_idx,off,(unsigned int)sizeof(*fed->fed_lcd));
325 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
326 /* Transaction needed to fix bug 1403 */
327 handle = fsfilt_start(obd,
328 filter->fo_rcvd_filp->f_dentry->d_inode,
329 FSFILT_OP_SETATTR, NULL);
330 if (IS_ERR(handle)) {
331 rc = PTR_ERR(handle);
332 CERROR("unable to start transaction: rc %d\n", rc);
334 rc = fsfilt_add_journal_cb(obd, 0, handle,
335 target_client_add_cb, exp);
337 spin_lock(&exp->exp_lock);
338 exp->exp_need_sync = 1;
339 spin_unlock(&exp->exp_lock);
341 rc = fsfilt_write_record(obd, filter->fo_rcvd_filp,
343 sizeof(*fed->fed_lcd),
344 &off, rc /* sync if no cb */);
346 filter->fo_rcvd_filp->f_dentry->d_inode,
349 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
352 CERROR("error writing %s client idx %u: rc %d\n",
353 LAST_RCVD, fed->fed_lr_idx, rc);
360 static int filter_client_free(struct obd_export *exp)
362 struct filter_export_data *fed = &exp->exp_filter_data;
363 struct filter_obd *filter = &exp->exp_obd->u.filter;
364 struct obd_device *obd = exp->exp_obd;
365 struct lsd_client_data zero_lcd;
366 struct lvfs_run_ctxt saved;
371 if (fed->fed_lcd == NULL)
374 /* XXX if lcd_uuid were a real obd_uuid, I could use obd_uuid_equals */
375 if (strcmp(fed->fed_lcd->lcd_uuid, obd->obd_uuid.uuid ) == 0)
378 CDEBUG(D_INFO, "freeing client at idx %u, offset %lld with UUID '%s'\n",
379 fed->fed_lr_idx, fed->fed_lr_off, fed->fed_lcd->lcd_uuid);
381 LASSERT(filter->fo_last_rcvd_slots != NULL);
383 off = fed->fed_lr_off;
385 /* Don't clear fed_lr_idx here as it is likely also unset. At worst
386 * we leak a client slot that will be cleaned on the next recovery. */
388 CERROR("%s: client idx %d has med_off %lld\n",
389 obd->obd_name, fed->fed_lr_idx, off);
390 GOTO(free, rc = -EINVAL);
393 /* Clear the bit _after_ zeroing out the client so we don't
394 race with filter_client_add and zero out new clients.*/
395 if (!test_bit(fed->fed_lr_idx, filter->fo_last_rcvd_slots)) {
396 CERROR("FILTER client %u: bit already clear in bitmap!!\n",
401 if (!(exp->exp_flags & OBD_OPT_FAILOVER)) {
402 memset(&zero_lcd, 0, sizeof zero_lcd);
403 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
404 rc = fsfilt_write_record(obd, filter->fo_rcvd_filp, &zero_lcd,
405 sizeof(zero_lcd), &off,
406 (!exp->exp_libclient ||
407 exp->exp_need_sync));
409 /* update server's transno */
410 filter_update_server_data(obd, filter->fo_rcvd_filp,
412 !exp->exp_libclient);
413 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
415 CDEBUG(rc == 0 ? D_INFO : D_ERROR,
416 "zeroing out client %s at idx %u (%llu) in %s rc %d\n",
417 fed->fed_lcd->lcd_uuid, fed->fed_lr_idx, fed->fed_lr_off,
421 if (!test_and_clear_bit(fed->fed_lr_idx, filter->fo_last_rcvd_slots)) {
422 CERROR("FILTER client %u: bit already clear in bitmap!!\n",
429 OBD_FREE_PTR(fed->fed_lcd);
435 /* drop fmd reference, free it if last ref. must be called with fed_lock held.*/
436 static inline void filter_fmd_put_nolock(struct filter_export_data *fed,
437 struct filter_mod_data *fmd)
439 LASSERT_SPIN_LOCKED(&fed->fed_lock);
440 if (--fmd->fmd_refcount == 0) {
441 /* XXX when we have persistent reservations and the handle
442 * is stored herein we need to drop it here. */
443 fed->fed_mod_count--;
444 list_del(&fmd->fmd_list);
445 OBD_SLAB_FREE(fmd, ll_fmd_cachep, sizeof(*fmd));
449 /* drop fmd reference, free it if last ref */
450 void filter_fmd_put(struct obd_export *exp, struct filter_mod_data *fmd)
452 struct filter_export_data *fed;
457 fed = &exp->exp_filter_data;
458 spin_lock(&fed->fed_lock);
459 filter_fmd_put_nolock(fed, fmd); /* caller reference */
460 spin_unlock(&fed->fed_lock);
463 /* expire entries from the end of the list if there are too many
464 * or they are too old */
465 static void filter_fmd_expire_nolock(struct filter_obd *filter,
466 struct filter_export_data *fed,
467 struct filter_mod_data *keep)
469 struct filter_mod_data *fmd, *tmp;
471 list_for_each_entry_safe(fmd, tmp, &fed->fed_mod_list, fmd_list) {
475 if (time_before(jiffies, fmd->fmd_expire) &&
476 fed->fed_mod_count < filter->fo_fmd_max_num)
479 list_del_init(&fmd->fmd_list);
480 filter_fmd_put_nolock(fed, fmd); /* list reference */
484 void filter_fmd_expire(struct obd_export *exp)
486 spin_lock(&exp->exp_filter_data.fed_lock);
487 filter_fmd_expire_nolock(&exp->exp_obd->u.filter,
488 &exp->exp_filter_data, NULL);
489 spin_unlock(&exp->exp_filter_data.fed_lock);
492 /* find specified objid, group in export fmd list.
493 * caller must hold fed_lock and take fmd reference itself */
494 static struct filter_mod_data *filter_fmd_find_nolock(struct filter_obd *filter,
495 struct filter_export_data *fed,
496 obd_id objid, obd_gr group)
498 struct filter_mod_data *found = NULL, *fmd;
500 LASSERT_SPIN_LOCKED(&fed->fed_lock);
502 list_for_each_entry_reverse(fmd, &fed->fed_mod_list, fmd_list) {
503 if (fmd->fmd_id == objid && fmd->fmd_gr == group) {
505 list_del(&fmd->fmd_list);
506 list_add_tail(&fmd->fmd_list, &fed->fed_mod_list);
507 fmd->fmd_expire = jiffies + filter->fo_fmd_max_age;
512 filter_fmd_expire_nolock(filter, fed, found);
517 /* Find fmd based on objid and group, or return NULL if not found. */
518 struct filter_mod_data *filter_fmd_find(struct obd_export *exp,
519 obd_id objid, obd_gr group)
521 struct filter_mod_data *fmd;
523 spin_lock(&exp->exp_filter_data.fed_lock);
524 fmd = filter_fmd_find_nolock(&exp->exp_obd->u.filter,
525 &exp->exp_filter_data, objid, group);
527 fmd->fmd_refcount++; /* caller reference */
528 spin_unlock(&exp->exp_filter_data.fed_lock);
533 /* Find fmd based on objid and group, or create a new one if none is found.
534 * It is possible for this function to return NULL under memory pressure,
535 * or if objid = 0 is passed (which will only cause old entries to expire).
536 * Currently this is not fatal because any fmd state is transient and
537 * may also be freed when it gets sufficiently old. */
538 struct filter_mod_data *filter_fmd_get(struct obd_export *exp,
539 obd_id objid, obd_gr group)
541 struct filter_export_data *fed = &exp->exp_filter_data;
542 struct filter_mod_data *found = NULL, *fmd_new = NULL;
544 OBD_SLAB_ALLOC(fmd_new, ll_fmd_cachep, CFS_ALLOC_IO, sizeof(*fmd_new));
546 spin_lock(&fed->fed_lock);
547 found = filter_fmd_find_nolock(&exp->exp_obd->u.filter,fed,objid,group);
550 list_add_tail(&fmd_new->fmd_list, &fed->fed_mod_list);
551 fmd_new->fmd_id = objid;
552 fmd_new->fmd_gr = group;
553 fmd_new->fmd_refcount++; /* list reference */
555 fed->fed_mod_count++;
557 OBD_SLAB_FREE(fmd_new, ll_fmd_cachep, sizeof(*fmd_new));
561 found->fmd_refcount++; /* caller reference */
562 found->fmd_expire = jiffies +
563 exp->exp_obd->u.filter.fo_fmd_max_age;
566 spin_unlock(&fed->fed_lock);
572 /* drop fmd list reference so it will disappear when last reference is put.
573 * This isn't so critical because it would in fact only affect the one client
574 * that is doing the unlink and at worst we have an stale entry referencing
575 * an object that should never be used again. */
576 static void filter_fmd_drop(struct obd_export *exp, obd_id objid, obd_gr group)
578 struct filter_mod_data *found = NULL;
580 spin_lock(&exp->exp_filter_data.fed_lock);
581 found = filter_fmd_find_nolock(&exp->exp_filter_data, objid, group);
583 list_del_init(&found->fmd_list);
584 filter_fmd_put_nolock(&exp->exp_filter_data, found);
586 spin_unlock(&exp->exp_filter_data.fed_lock);
589 #define filter_fmd_drop(exp, objid, group)
592 /* remove all entries from fmd list */
593 static void filter_fmd_cleanup(struct obd_export *exp)
595 struct filter_export_data *fed = &exp->exp_filter_data;
596 struct filter_mod_data *fmd = NULL, *tmp;
598 spin_lock(&fed->fed_lock);
599 list_for_each_entry_safe(fmd, tmp, &fed->fed_mod_list, fmd_list) {
600 list_del_init(&fmd->fmd_list);
601 filter_fmd_put_nolock(fed, fmd);
603 spin_unlock(&fed->fed_lock);
606 static int filter_init_export(struct obd_export *exp)
608 spin_lock_init(&exp->exp_filter_data.fed_lock);
609 CFS_INIT_LIST_HEAD(&exp->exp_filter_data.fed_mod_list);
611 spin_lock(&exp->exp_lock);
612 exp->exp_connecting = 1;
613 spin_unlock(&exp->exp_lock);
615 return ldlm_init_export(exp);
618 static int filter_free_server_data(struct filter_obd *filter)
620 OBD_FREE(filter->fo_fsd, sizeof(*filter->fo_fsd));
621 filter->fo_fsd = NULL;
622 OBD_FREE(filter->fo_last_rcvd_slots, LR_MAX_CLIENTS / 8);
623 filter->fo_last_rcvd_slots = NULL;
627 /* assumes caller is already in kernel ctxt */
628 int filter_update_server_data(struct obd_device *obd, struct file *filp,
629 struct lr_server_data *fsd, int force_sync)
635 CDEBUG(D_INODE, "server uuid : %s\n", fsd->lsd_uuid);
636 CDEBUG(D_INODE, "server last_rcvd : "LPU64"\n",
637 le64_to_cpu(fsd->lsd_last_transno));
638 CDEBUG(D_INODE, "server last_mount: "LPU64"\n",
639 le64_to_cpu(fsd->lsd_mount_count));
641 fsd->lsd_compat14 = fsd->lsd_last_transno;
642 rc = fsfilt_write_record(obd, filp, fsd, sizeof(*fsd), &off, force_sync);
644 CERROR("error writing lr_server_data: rc = %d\n", rc);
649 int filter_update_last_objid(struct obd_device *obd, obd_gr group,
652 struct filter_obd *filter = &obd->u.filter;
658 if (filter->fo_last_objid_files[group] == NULL) {
659 CERROR("Object group "LPU64" not fully setup; not updating "
660 "last_objid\n", group);
664 CDEBUG(D_INODE, "%s: server last_objid for group "LPU64": "LPU64"\n",
665 obd->obd_name, group, filter->fo_last_objids[group]);
667 tmp = cpu_to_le64(filter->fo_last_objids[group]);
668 rc = fsfilt_write_record(obd, filter->fo_last_objid_files[group],
669 &tmp, sizeof(tmp), &off, force_sync);
671 CERROR("error writing group "LPU64" last objid: rc = %d\n",
675 extern int ost_handle(struct ptlrpc_request *req);
676 /* assumes caller has already in kernel ctxt */
677 static int filter_init_server_data(struct obd_device *obd, struct file * filp)
679 struct filter_obd *filter = &obd->u.filter;
680 struct lr_server_data *fsd;
681 struct lsd_client_data *lcd = NULL;
682 struct inode *inode = filp->f_dentry->d_inode;
683 unsigned long last_rcvd_size = i_size_read(inode);
689 /* ensure padding in the struct is the correct size */
690 CLASSERT (offsetof(struct lr_server_data, lsd_padding) +
691 sizeof(fsd->lsd_padding) == LR_SERVER_SIZE);
692 CLASSERT (offsetof(struct lsd_client_data, lcd_padding) +
693 sizeof(lcd->lcd_padding) == LR_CLIENT_SIZE);
695 OBD_ALLOC(fsd, sizeof(*fsd));
698 filter->fo_fsd = fsd;
700 OBD_ALLOC(filter->fo_last_rcvd_slots, LR_MAX_CLIENTS / 8);
701 if (filter->fo_last_rcvd_slots == NULL) {
702 OBD_FREE(fsd, sizeof(*fsd));
706 if (last_rcvd_size == 0) {
707 LCONSOLE_WARN("%s: new disk, initializing\n", obd->obd_name);
709 memcpy(fsd->lsd_uuid, obd->obd_uuid.uuid,sizeof(fsd->lsd_uuid));
710 fsd->lsd_last_transno = 0;
711 mount_count = fsd->lsd_mount_count = 0;
712 fsd->lsd_server_size = cpu_to_le32(LR_SERVER_SIZE);
713 fsd->lsd_client_start = cpu_to_le32(LR_CLIENT_START);
714 fsd->lsd_client_size = cpu_to_le16(LR_CLIENT_SIZE);
715 fsd->lsd_subdir_count = cpu_to_le16(FILTER_SUBDIR_COUNT);
716 filter->fo_subdir_count = FILTER_SUBDIR_COUNT;
717 fsd->lsd_feature_incompat = cpu_to_le32(OBD_INCOMPAT_OST);
719 rc = fsfilt_read_record(obd, filp, fsd, sizeof(*fsd), &off);
721 CDEBUG(D_INODE,"OBD filter: error reading %s: rc %d\n",
725 if (strcmp(fsd->lsd_uuid, obd->obd_uuid.uuid) != 0) {
726 LCONSOLE_ERROR_MSG(0x134, "Trying to start OBD %s "
727 "using the wrong disk %s. Were the "
728 "/dev/ assignments rearranged?\n",
729 obd->obd_uuid.uuid, fsd->lsd_uuid);
730 GOTO(err_fsd, rc = -EINVAL);
732 mount_count = le64_to_cpu(fsd->lsd_mount_count);
733 filter->fo_subdir_count = le16_to_cpu(fsd->lsd_subdir_count);
735 /* Assume old last_rcvd format unless I_C_LR is set */
736 if (!(fsd->lsd_feature_incompat &
737 cpu_to_le32(OBD_INCOMPAT_COMMON_LR)))
738 fsd->lsd_last_transno = fsd->lsd_compat14;
742 if (fsd->lsd_feature_incompat & ~cpu_to_le32(FILTER_INCOMPAT_SUPP)) {
743 CERROR("%s: unsupported incompat filesystem feature(s) %x\n",
744 obd->obd_name, le32_to_cpu(fsd->lsd_feature_incompat) &
745 ~FILTER_INCOMPAT_SUPP);
746 GOTO(err_fsd, rc = -EINVAL);
748 if (fsd->lsd_feature_rocompat & ~cpu_to_le32(FILTER_ROCOMPAT_SUPP)) {
749 CERROR("%s: unsupported read-only filesystem feature(s) %x\n",
750 obd->obd_name, le32_to_cpu(fsd->lsd_feature_rocompat) &
751 ~FILTER_ROCOMPAT_SUPP);
752 /* Do something like remount filesystem read-only */
753 GOTO(err_fsd, rc = -EINVAL);
756 CDEBUG(D_INODE, "%s: server last_transno : "LPU64"\n",
757 obd->obd_name, le64_to_cpu(fsd->lsd_last_transno));
758 CDEBUG(D_INODE, "%s: server mount_count: "LPU64"\n",
759 obd->obd_name, mount_count + 1);
760 CDEBUG(D_INODE, "%s: server data size: %u\n",
761 obd->obd_name, le32_to_cpu(fsd->lsd_server_size));
762 CDEBUG(D_INODE, "%s: per-client data start: %u\n",
763 obd->obd_name, le32_to_cpu(fsd->lsd_client_start));
764 CDEBUG(D_INODE, "%s: per-client data size: %u\n",
765 obd->obd_name, le32_to_cpu(fsd->lsd_client_size));
766 CDEBUG(D_INODE, "%s: server subdir_count: %u\n",
767 obd->obd_name, le16_to_cpu(fsd->lsd_subdir_count));
768 CDEBUG(D_INODE, "%s: last_rcvd clients: %lu\n", obd->obd_name,
769 last_rcvd_size <= le32_to_cpu(fsd->lsd_client_start) ? 0 :
770 (last_rcvd_size - le32_to_cpu(fsd->lsd_client_start)) /
771 le16_to_cpu(fsd->lsd_client_size));
773 if (!obd->obd_replayable) {
774 CWARN("%s: recovery support OFF\n", obd->obd_name);
778 for (cl_idx = 0, off = le32_to_cpu(fsd->lsd_client_start);
779 off < last_rcvd_size; cl_idx++) {
781 struct obd_export *exp;
782 struct filter_export_data *fed;
787 GOTO(err_client, rc = -ENOMEM);
790 /* Don't assume off is incremented properly by
791 * fsfilt_read_record(), in case sizeof(*lcd)
792 * isn't the same as fsd->lsd_client_size. */
793 off = le32_to_cpu(fsd->lsd_client_start) +
794 cl_idx * le16_to_cpu(fsd->lsd_client_size);
795 rc = fsfilt_read_record(obd, filp, lcd, sizeof(*lcd), &off);
797 CERROR("error reading FILT %s idx %d off %llu: rc %d\n",
798 LAST_RCVD, cl_idx, off, rc);
799 break; /* read error shouldn't cause startup to fail */
802 if (lcd->lcd_uuid[0] == '\0') {
803 CDEBUG(D_INFO, "skipping zeroed client at offset %d\n",
808 last_rcvd = le64_to_cpu(lcd->lcd_last_transno);
810 /* These exports are cleaned up by filter_disconnect(), so they
811 * need to be set up like real exports as filter_connect() does.
813 exp = class_new_export(obd, (struct obd_uuid *)lcd->lcd_uuid);
815 CDEBUG(D_HA, "RCVRNG CLIENT uuid: %s idx: %d lr: "LPU64
816 " srv lr: "LPU64"\n", lcd->lcd_uuid, cl_idx,
817 last_rcvd, le64_to_cpu(fsd->lsd_last_transno));
819 if (PTR_ERR(exp) == -EALREADY) {
820 /* export already exists, zero out this one */
821 CERROR("Zeroing out duplicate export due to "
823 lcd->lcd_uuid[0] = '\0';
825 GOTO(err_client, rc = PTR_ERR(exp));
828 fed = &exp->exp_filter_data;
830 fed->fed_group = 0; /* will be assigned at connect */
831 filter_export_stats_init(obd, exp, NULL);
832 rc = filter_client_add(obd, exp, cl_idx);
833 /* can't fail for existing client */
834 LASSERTF(rc == 0, "rc = %d\n", rc);
837 spin_lock(&exp->exp_lock);
838 exp->exp_connecting = 0;
839 exp->exp_in_recovery = 0;
840 spin_unlock(&exp->exp_lock);
841 obd->obd_max_recoverable_clients++;
842 class_export_put(exp);
845 /* Need to check last_rcvd even for duplicated exports. */
846 CDEBUG(D_OTHER, "client at idx %d has last_rcvd = "LPU64"\n",
849 if (last_rcvd > le64_to_cpu(fsd->lsd_last_transno))
850 fsd->lsd_last_transno = cpu_to_le64(last_rcvd);
856 obd->obd_last_committed = le64_to_cpu(fsd->lsd_last_transno);
858 target_recovery_init(obd, ost_handle);
861 filter->fo_mount_count = mount_count + 1;
862 fsd->lsd_mount_count = cpu_to_le64(filter->fo_mount_count);
864 /* save it, so mount count and last_transno is current */
865 rc = filter_update_server_data(obd, filp, filter->fo_fsd, 1);
867 GOTO(err_client, rc);
872 target_recovery_fini(obd);
874 filter_free_server_data(filter);
878 static int filter_cleanup_groups(struct obd_device *obd)
880 struct filter_obd *filter = &obd->u.filter;
882 struct dentry *dentry;
886 if (filter->fo_dentry_O_groups != NULL) {
887 for (i = 0; i < filter->fo_group_count; i++) {
888 dentry = filter->fo_dentry_O_groups[i];
892 OBD_FREE(filter->fo_dentry_O_groups,
893 filter->fo_group_count *
894 sizeof(*filter->fo_dentry_O_groups));
895 filter->fo_dentry_O_groups = NULL;
897 if (filter->fo_last_objid_files != NULL) {
898 for (i = 0; i < filter->fo_group_count; i++) {
899 filp = filter->fo_last_objid_files[i];
903 OBD_FREE(filter->fo_last_objid_files,
904 filter->fo_group_count *
905 sizeof(*filter->fo_last_objid_files));
906 filter->fo_last_objid_files = NULL;
908 if (filter->fo_dentry_O_sub != NULL) {
909 for (i = 0; i < filter->fo_group_count; i++) {
910 for (j = 0; j < filter->fo_subdir_count; j++) {
911 dentry = filter->fo_dentry_O_sub[i].dentry[j];
916 OBD_FREE(filter->fo_dentry_O_sub,
917 filter->fo_group_count *
918 sizeof(*filter->fo_dentry_O_sub));
919 filter->fo_dentry_O_sub = NULL;
921 if (filter->fo_last_objids != NULL) {
922 OBD_FREE(filter->fo_last_objids,
923 filter->fo_group_count *
924 sizeof(*filter->fo_last_objids));
925 filter->fo_last_objids = NULL;
927 if (filter->fo_dentry_O != NULL) {
928 f_dput(filter->fo_dentry_O);
929 filter->fo_dentry_O = NULL;
934 static int filter_update_last_group(struct obd_device *obd, int group)
936 struct filter_obd *filter = &obd->u.filter;
937 struct file *filp = NULL;
938 int last_group = 0, rc;
942 if (group <= filter->fo_committed_group)
945 filp = filp_open("LAST_GROUP", O_RDWR, 0700);
949 CERROR("cannot open LAST_GROUP: rc = %d\n", rc);
953 rc = fsfilt_read_record(obd, filp, &last_group, sizeof(__u32), &off);
955 CDEBUG(D_INODE, "error reading LAST_GROUP: rc %d\n",rc);
958 LASSERT(off == 0 || last_group >= FILTER_MIN_GROUPS);
959 CDEBUG(D_INODE, "%s: previous %d, new %d\n",
960 obd->obd_name, last_group, group);
964 /* must be sync: bXXXX */
965 rc = fsfilt_write_record(obd, filp, &last_group, sizeof(__u32), &off, 1);
967 CDEBUG(D_INODE, "error updating LAST_GROUP: rc %d\n", rc);
971 filter->fo_committed_group = group;
978 static int filter_read_group_internal(struct obd_device *obd, int group,
981 struct filter_obd *filter = &obd->u.filter;
982 __u64 *new_objids = NULL;
983 struct filter_subdirs *new_subdirs = NULL, *tmp_subdirs = NULL;
984 struct dentry **new_groups = NULL;
985 struct file **new_files = NULL;
986 struct dentry *dentry;
988 int old_count = filter->fo_group_count, rc, stage = 0, i;
994 snprintf(name, 24, "%d", group);
998 dentry = ll_lookup_one_len(name, filter->fo_dentry_O,
1000 if (IS_ERR(dentry)) {
1001 CERROR("Cannot lookup expected object group %d: %ld\n",
1002 group, PTR_ERR(dentry));
1003 RETURN(PTR_ERR(dentry));
1006 dentry = simple_mkdir(filter->fo_dentry_O, filter->fo_vfsmnt,
1008 if (IS_ERR(dentry)) {
1009 CERROR("cannot lookup/create O/%s: rc = %ld\n", name,
1011 RETURN(PTR_ERR(dentry));
1016 snprintf(name, 24, "O/%d/LAST_ID", group);
1018 filp = filp_open(name, O_CREAT | O_RDWR, 0700);
1020 CERROR("cannot create %s: rc = %ld\n", name, PTR_ERR(filp));
1021 GOTO(cleanup, rc = PTR_ERR(filp));
1025 rc = fsfilt_read_record(obd, filp, &last_objid, sizeof(__u64), &off);
1027 CDEBUG(D_INODE, "error reading %s: rc %d\n", name, rc);
1031 if (filter->fo_subdir_count) {
1032 OBD_ALLOC(tmp_subdirs, sizeof(*tmp_subdirs));
1033 if (tmp_subdirs == NULL)
1034 GOTO(cleanup, rc = -ENOMEM);
1037 for (i = 0; i < filter->fo_subdir_count; i++) {
1039 snprintf(dir, sizeof(dir), "d%u", i);
1041 tmp_subdirs->dentry[i] = simple_mkdir(dentry,
1044 if (IS_ERR(tmp_subdirs->dentry[i])) {
1045 rc = PTR_ERR(tmp_subdirs->dentry[i]);
1046 CERROR("can't lookup/create O/%d/%s: rc = %d\n",
1051 CDEBUG(D_INODE, "got/created O/%d/%s: %p\n", group, dir,
1052 tmp_subdirs->dentry[i]);
1056 /* 'group' is an index; we need an array of length 'group + 1' */
1057 if (group + 1 > old_count) {
1058 OBD_ALLOC(new_objids, len * sizeof(*new_objids));
1059 OBD_ALLOC(new_subdirs, len * sizeof(*new_subdirs));
1060 OBD_ALLOC(new_groups, len * sizeof(*new_groups));
1061 OBD_ALLOC(new_files, len * sizeof(*new_files));
1063 if (new_objids == NULL || new_subdirs == NULL ||
1064 new_groups == NULL || new_files == NULL)
1065 GOTO(cleanup, rc = -ENOMEM);
1068 memcpy(new_objids, filter->fo_last_objids,
1069 old_count * sizeof(*new_objids));
1070 memcpy(new_subdirs, filter->fo_dentry_O_sub,
1071 old_count * sizeof(*new_subdirs));
1072 memcpy(new_groups, filter->fo_dentry_O_groups,
1073 old_count * sizeof(*new_groups));
1074 memcpy(new_files, filter->fo_last_objid_files,
1075 old_count * sizeof(*new_files));
1077 OBD_FREE(filter->fo_last_objids,
1078 old_count * sizeof(*new_objids));
1079 OBD_FREE(filter->fo_dentry_O_sub,
1080 old_count * sizeof(*new_subdirs));
1081 OBD_FREE(filter->fo_dentry_O_groups,
1082 old_count * sizeof(*new_groups));
1083 OBD_FREE(filter->fo_last_objid_files,
1084 old_count * sizeof(*new_files));
1086 filter->fo_last_objids = new_objids;
1087 filter->fo_dentry_O_sub = new_subdirs;
1088 filter->fo_dentry_O_groups = new_groups;
1089 filter->fo_last_objid_files = new_files;
1090 filter->fo_group_count = len;
1093 filter->fo_dentry_O_groups[group] = dentry;
1094 filter->fo_last_objid_files[group] = filp;
1095 if (filter->fo_subdir_count) {
1096 filter->fo_dentry_O_sub[group] = *tmp_subdirs;
1097 OBD_FREE(tmp_subdirs, sizeof(*tmp_subdirs));
1100 filter_update_last_group(obd, group);
1102 if (i_size_read(filp->f_dentry->d_inode) == 0) {
1103 filter->fo_last_objids[group] = FILTER_INIT_OBJID;
1104 rc = filter_update_last_objid(obd, group, 1);
1108 filter->fo_last_objids[group] = le64_to_cpu(last_objid);
1109 CDEBUG(D_INODE, "%s: server last_objid group %d: "LPU64"\n",
1110 obd->obd_name, group, last_objid);
1115 if (new_objids != NULL)
1116 OBD_FREE(new_objids, len * sizeof(*new_objids));
1117 if (new_subdirs != NULL)
1118 OBD_FREE(new_subdirs, len * sizeof(*new_subdirs));
1119 if (new_groups != NULL)
1120 OBD_FREE(new_groups, len * sizeof(*new_groups));
1121 if (new_files != NULL)
1122 OBD_FREE(new_files, len * sizeof(*new_files));
1124 if (filter->fo_subdir_count) {
1125 for (i = 0; i < filter->fo_subdir_count; i++) {
1126 if (tmp_subdirs->dentry[i] != NULL)
1127 dput(tmp_subdirs->dentry[i]);
1129 OBD_FREE(tmp_subdirs, sizeof(*tmp_subdirs));
1132 filp_close(filp, 0);
1139 static int filter_read_groups(struct obd_device *obd, int last_group,
1142 struct filter_obd *filter = &obd->u.filter;
1143 int old_count, group, rc = 0;
1145 down(&filter->fo_init_lock);
1146 old_count = filter->fo_group_count;
1147 for (group = old_count; group <= last_group; group++) {
1149 continue; /* no group zero */
1151 rc = filter_read_group_internal(obd, group, create);
1155 up(&filter->fo_init_lock);
1159 /* FIXME: object groups */
1160 static int filter_prep_groups(struct obd_device *obd)
1162 struct filter_obd *filter = &obd->u.filter;
1163 struct dentry *dentry, *O_dentry;
1165 int last_group, rc = 0, cleanup_phase = 0;
1169 O_dentry = simple_mkdir(current->fs->pwd, filter->fo_vfsmnt,
1171 CDEBUG(D_INODE, "got/created O: %p\n", O_dentry);
1172 if (IS_ERR(O_dentry)) {
1173 rc = PTR_ERR(O_dentry);
1174 CERROR("cannot open/create O: rc = %d\n", rc);
1177 filter->fo_dentry_O = O_dentry;
1178 cleanup_phase = 1; /* O_dentry */
1180 /* Lookup "R" to tell if we're on an old OST FS and need to convert
1181 * from O/R/<dir>/<objid> to O/0/<dir>/<objid>. This can be removed
1182 * some time post 1.0 when all old-style OSTs have converted along
1183 * with the init_objid hack. */
1184 dentry = ll_lookup_one_len("R", O_dentry, 1);
1186 GOTO(cleanup, rc = PTR_ERR(dentry));
1187 if (dentry->d_inode && S_ISDIR(dentry->d_inode->i_mode)) {
1188 struct dentry *O0_dentry = lookup_one_len("0", O_dentry, 1);
1191 CWARN("converting OST to new object layout\n");
1192 if (IS_ERR(O0_dentry)) {
1193 rc = PTR_ERR(O0_dentry);
1194 CERROR("error looking up O/0: rc %d\n", rc);
1195 GOTO(cleanup_R, rc);
1198 if (O0_dentry->d_inode) {
1199 CERROR("Both O/R and O/0 exist. Fix manually.\n");
1200 GOTO(cleanup_O0, rc = -EEXIST);
1203 LOCK_INODE_MUTEX(O_dentry->d_inode);
1204 rc = ll_vfs_rename(O_dentry->d_inode, dentry, filter->fo_vfsmnt,
1205 O_dentry->d_inode, O0_dentry,
1207 UNLOCK_INODE_MUTEX(O_dentry->d_inode);
1210 CERROR("error renaming O/R to O/0: rc %d\n", rc);
1211 GOTO(cleanup_O0, rc);
1213 filter->fo_fsd->lsd_feature_incompat |=
1214 cpu_to_le32(OBD_INCOMPAT_GROUPS);
1215 rc = filter_update_server_data(obd, filter->fo_rcvd_filp,
1217 GOTO(cleanup_O0, rc);
1229 cleanup_phase = 2; /* groups */
1231 /* we have to initialize all groups before first connections from
1232 * clients because they may send create/destroy for any group -bzzz */
1233 filp = filp_open("LAST_GROUP", O_CREAT | O_RDWR, 0700);
1235 CERROR("cannot create LAST_GROUP: rc = %ld\n", PTR_ERR(filp));
1236 GOTO(cleanup, rc = PTR_ERR(filp));
1238 cleanup_phase = 3; /* filp */
1240 rc = fsfilt_read_record(obd, filp, &last_group, sizeof(__u32), &off);
1242 CDEBUG(D_INODE, "error reading LAST_GROUP: rc %d\n", rc);
1246 last_group = FILTER_MIN_GROUPS;
1248 LASSERT(last_group >= FILTER_MIN_GROUPS);
1251 CWARN("%s: initialize groups [%d,%d]\n", obd->obd_name,
1252 FILTER_MIN_GROUPS, last_group);
1253 filter->fo_committed_group = last_group;
1254 rc = filter_read_groups(obd, last_group, 1);
1258 filp_close(filp, 0);
1262 switch (cleanup_phase) {
1264 filp_close(filp, 0);
1266 filter_cleanup_groups(obd);
1268 f_dput(filter->fo_dentry_O);
1269 filter->fo_dentry_O = NULL;
1277 /* setup the object store with correct subdirectories */
1278 static int filter_prep(struct obd_device *obd)
1280 struct lvfs_run_ctxt saved;
1281 struct filter_obd *filter = &obd->u.filter;
1283 struct inode *inode;
1287 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
1288 file = filp_open(LAST_RCVD, O_RDWR | O_CREAT | O_LARGEFILE, 0700);
1289 if (!file || IS_ERR(file)) {
1291 CERROR("OBD filter: cannot open/create %s: rc = %d\n",
1295 filter->fo_rcvd_filp = file;
1296 if (!S_ISREG(file->f_dentry->d_inode->i_mode)) {
1297 CERROR("%s is not a regular file!: mode = %o\n", LAST_RCVD,
1298 file->f_dentry->d_inode->i_mode);
1299 GOTO(err_filp, rc = -ENOENT);
1302 inode = file->f_dentry->d_parent->d_inode;
1303 /* We use i_op->unlink directly in filter_vfs_unlink() */
1304 if (!inode->i_op || !inode->i_op->create || !inode->i_op->unlink) {
1305 CERROR("%s: filesystem does not support create/unlink ops\n",
1307 GOTO(err_filp, rc = -EOPNOTSUPP);
1310 rc = filter_init_server_data(obd, file);
1312 CERROR("cannot read %s: rc = %d\n", LAST_RCVD, rc);
1315 /* open and create health check io file*/
1316 file = filp_open(HEALTH_CHECK, O_RDWR | O_CREAT, 0644);
1319 CERROR("OBD filter: cannot open/create %s rc = %d\n",
1321 GOTO(err_server_data, rc);
1323 filter->fo_health_check_filp = file;
1324 if (!S_ISREG(file->f_dentry->d_inode->i_mode)) {
1325 CERROR("%s is not a regular file!: mode = %o\n", HEALTH_CHECK,
1326 file->f_dentry->d_inode->i_mode);
1327 GOTO(err_health_check, rc = -ENOENT);
1329 rc = lvfs_check_io_health(obd, file);
1331 GOTO(err_health_check, rc);
1333 rc = filter_prep_groups(obd);
1335 GOTO(err_health_check, rc);
1337 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
1342 if (filp_close(filter->fo_health_check_filp, 0))
1343 CERROR("can't close %s after error\n", HEALTH_CHECK);
1344 filter->fo_health_check_filp = NULL;
1346 target_recovery_fini(obd);
1347 filter_free_server_data(filter);
1349 if (filp_close(filter->fo_rcvd_filp, 0))
1350 CERROR("can't close %s after error\n", LAST_RCVD);
1351 filter->fo_rcvd_filp = NULL;
1355 /* cleanup the filter: write last used object id to status file */
1356 static void filter_post(struct obd_device *obd)
1358 struct lvfs_run_ctxt saved;
1359 struct filter_obd *filter = &obd->u.filter;
1362 /* XXX: filter_update_lastobjid used to call fsync_dev. It might be
1363 * best to start a transaction with h_sync, because we removed this
1366 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
1367 rc = filter_update_server_data(obd, filter->fo_rcvd_filp,
1370 CERROR("error writing server data: rc = %d\n", rc);
1372 for (i = 1; i < filter->fo_group_count; i++) {
1373 rc = filter_update_last_objid(obd, i,
1374 (i == filter->fo_group_count - 1));
1376 CERROR("error writing group %d lastobjid: rc = %d\n",
1380 rc = filp_close(filter->fo_rcvd_filp, 0);
1381 filter->fo_rcvd_filp = NULL;
1383 CERROR("error closing %s: rc = %d\n", LAST_RCVD, rc);
1385 rc = filp_close(filter->fo_health_check_filp, 0);
1386 filter->fo_health_check_filp = NULL;
1388 CERROR("error closing %s: rc = %d\n", HEALTH_CHECK, rc);
1390 filter_cleanup_groups(obd);
1391 filter_free_server_data(filter);
1392 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
1394 filter_free_capa_keys(filter);
1395 cleanup_capa_hash(filter->fo_capa_hash);
1398 static void filter_set_last_id(struct filter_obd *filter,
1399 obd_id id, obd_gr group)
1401 LASSERT(filter->fo_fsd != NULL);
1402 LASSERT(group <= filter->fo_group_count);
1404 spin_lock(&filter->fo_objidlock);
1405 filter->fo_last_objids[group] = id;
1406 spin_unlock(&filter->fo_objidlock);
1409 obd_id filter_last_id(struct filter_obd *filter, obd_gr group)
1412 LASSERT(filter->fo_fsd != NULL);
1413 LASSERT(group <= filter->fo_group_count);
1415 /* FIXME: object groups */
1416 spin_lock(&filter->fo_objidlock);
1417 id = filter->fo_last_objids[group];
1418 spin_unlock(&filter->fo_objidlock);
1423 static int filter_lock_dentry(struct obd_device *obd, struct dentry *dparent)
1425 LOCK_INODE_MUTEX_PARENT(dparent->d_inode);
1429 /* We never dget the object parent, so DON'T dput it either */
1430 struct dentry *filter_parent(struct obd_device *obd, obd_gr group, obd_id objid)
1432 struct filter_obd *filter = &obd->u.filter;
1433 struct filter_subdirs *subdirs;
1434 LASSERT(group < filter->fo_group_count); /* FIXME: object groups */
1436 if ((group > 0 && group < FILTER_GROUP_MDS0) ||
1437 filter->fo_subdir_count == 0)
1438 return filter->fo_dentry_O_groups[group];
1440 subdirs = &filter->fo_dentry_O_sub[group];
1441 return subdirs->dentry[objid & (filter->fo_subdir_count - 1)];
1444 /* We never dget the object parent, so DON'T dput it either */
1445 struct dentry *filter_parent_lock(struct obd_device *obd, obd_gr group,
1448 unsigned long now = jiffies;
1449 struct dentry *dparent = filter_parent(obd, group, objid);
1452 if (IS_ERR(dparent))
1454 if (dparent == NULL)
1455 return ERR_PTR(-ENOENT);
1457 rc = filter_lock_dentry(obd, dparent);
1458 fsfilt_check_slow(obd, now, "parent lock");
1459 return rc ? ERR_PTR(rc) : dparent;
1462 /* We never dget the object parent, so DON'T dput it either */
1463 static void filter_parent_unlock(struct dentry *dparent)
1465 UNLOCK_INODE_MUTEX(dparent->d_inode);
1468 /* How to get files, dentries, inodes from object id's.
1470 * If dir_dentry is passed, the caller has already locked the parent
1471 * appropriately for this operation (normally a write lock). If
1472 * dir_dentry is NULL, we do a read lock while we do the lookup to
1473 * avoid races with create/destroy and such changing the directory
1474 * internal to the filesystem code. */
1475 struct dentry *filter_fid2dentry(struct obd_device *obd,
1476 struct dentry *dir_dentry,
1477 obd_gr group, obd_id id)
1479 struct dentry *dparent = dir_dentry;
1480 struct dentry *dchild;
1485 if (OBD_FAIL_CHECK(OBD_FAIL_OST_ENOENT) &&
1486 obd->u.filter.fo_destroys_in_progress == 0) {
1487 /* don't fail lookups for orphan recovery, it causes
1488 * later LBUGs when objects still exist during precreate */
1489 CDEBUG(D_INFO, "*** obd_fail_loc=%x ***\n",OBD_FAIL_OST_ENOENT);
1490 RETURN(ERR_PTR(-ENOENT));
1493 CERROR("fatal: invalid object id 0\n");
1494 RETURN(ERR_PTR(-ESTALE));
1497 len = sprintf(name, LPU64, id);
1498 if (dir_dentry == NULL) {
1499 dparent = filter_parent_lock(obd, group, id);
1500 if (IS_ERR(dparent)) {
1501 CERROR("%s: error getting object "LPU64":"LPU64
1502 " parent: rc %ld\n", obd->obd_name,
1503 id, group, PTR_ERR(dparent));
1507 CDEBUG(D_INODE, "looking up object O/%.*s/%s\n",
1508 dparent->d_name.len, dparent->d_name.name, name);
1509 dchild = /*ll_*/lookup_one_len(name, dparent, len);
1510 if (dir_dentry == NULL)
1511 filter_parent_unlock(dparent);
1512 if (IS_ERR(dchild)) {
1513 CERROR("%s: child lookup error %ld\n", obd->obd_name,
1518 if (dchild->d_inode != NULL && is_bad_inode(dchild->d_inode)) {
1519 CERROR("%s: got bad object "LPU64" inode %lu\n",
1520 obd->obd_name, id, dchild->d_inode->i_ino);
1522 RETURN(ERR_PTR(-ENOENT));
1525 CDEBUG(D_INODE, "got child objid %s: %p, count = %d\n",
1526 name, dchild, atomic_read(&dchild->d_count));
1528 LASSERT(atomic_read(&dchild->d_count) > 0);
1533 static int filter_prepare_destroy(struct obd_device *obd, obd_id objid,
1536 struct lustre_handle lockh;
1537 int flags = LDLM_AST_DISCARD_DATA, rc;
1538 struct ldlm_res_id res_id;
1539 ldlm_policy_data_t policy = { .l_extent = { 0, OBD_OBJECT_EOF } };
1542 osc_build_res_name(objid, group, &res_id);
1543 /* Tell the clients that the object is gone now and that they should
1544 * throw away any cached pages. */
1545 rc = ldlm_cli_enqueue_local(obd->obd_namespace, &res_id, LDLM_EXTENT,
1546 &policy, LCK_PW, &flags, ldlm_blocking_ast,
1547 ldlm_completion_ast, NULL, NULL, 0, NULL,
1550 /* We only care about the side-effects, just drop the lock. */
1552 ldlm_lock_decref(&lockh, LCK_PW);
1557 /* This is vfs_unlink() without down(i_sem). If we call regular vfs_unlink()
1558 * we have 2.6 lock ordering issues with filter_commitrw_write() as it takes
1559 * i_sem before starting a handle, while filter_destroy() + vfs_unlink do the
1560 * reverse. Caller must take i_sem before starting the transaction and we
1561 * drop it here before the inode is removed from the dentry. bug 4180/6984 */
1562 int filter_vfs_unlink(struct inode *dir, struct dentry *dentry,
1563 struct vfsmount *mnt)
1568 /* don't need dir->i_zombie for 2.4, it is for rename/unlink of dir
1569 * itself we already hold dir->i_mutex for child create/unlink ops */
1570 LASSERT(dentry->d_inode != NULL);
1571 LASSERT(TRYLOCK_INODE_MUTEX(dir) == 0);
1572 LASSERT(TRYLOCK_INODE_MUTEX(dentry->d_inode) == 0);
1576 if (/*!dentry->d_inode ||*/dentry->d_parent->d_inode != dir)
1577 GOTO(out, rc = -ENOENT);
1579 rc = ll_permission(dir, MAY_WRITE | MAY_EXEC, NULL);
1584 GOTO(out, rc = -EPERM);
1586 /* check_sticky() */
1587 if ((dentry->d_inode->i_uid != current->fsuid &&
1588 !cfs_capable(CFS_CAP_FOWNER)) || IS_APPEND(dentry->d_inode) ||
1589 IS_IMMUTABLE(dentry->d_inode))
1590 GOTO(out, rc = -EPERM);
1592 /* NOTE: This might need to go outside i_mutex, though it isn't clear if
1593 * that was done because of journal_start (which is already done
1594 * here) or some other ordering issue. */
1597 rc = ll_security_inode_unlink(dir, dentry, mnt);
1601 rc = dir->i_op->unlink(dir, dentry);
1603 /* need to drop i_mutex before we lose inode reference */
1604 UNLOCK_INODE_MUTEX(dentry->d_inode);
1611 /* Caller must hold LCK_PW on parent and push us into kernel context.
1612 * Caller must hold child i_mutex, we drop it always.
1613 * Caller is also required to ensure that dchild->d_inode exists. */
1614 static int filter_destroy_internal(struct obd_device *obd, obd_id objid,
1615 obd_gr group, struct dentry *dparent,
1616 struct dentry *dchild)
1618 struct inode *inode = dchild->d_inode;
1619 struct filter_obd *filter = &obd->u.filter;
1622 if (inode->i_nlink != 1 || atomic_read(&inode->i_count) != 1) {
1623 CERROR("destroying objid %.*s ino %lu nlink %lu count %d\n",
1624 dchild->d_name.len, dchild->d_name.name, inode->i_ino,
1625 (unsigned long)inode->i_nlink,
1626 atomic_read(&inode->i_count));
1629 rc = filter_vfs_unlink(dparent->d_inode, dchild, filter->fo_vfsmnt);
1631 CERROR("error unlinking objid %.*s: rc %d\n",
1632 dchild->d_name.len, dchild->d_name.name, rc);
1636 struct filter_intent_args {
1637 struct ldlm_lock **victim;
1642 static enum interval_iter filter_intent_cb(struct interval_node *n,
1645 struct ldlm_interval *node = (struct ldlm_interval *)n;
1646 struct filter_intent_args *arg = (struct filter_intent_args*)args;
1647 __u64 size = arg->size;
1648 struct ldlm_lock **v = arg->victim;
1649 struct ldlm_lock *lck;
1651 /* If the interval is lower than the current file size,
1653 if (interval_high(n) <= size)
1654 return INTERVAL_ITER_STOP;
1656 list_for_each_entry(lck, &node->li_group, l_sl_policy) {
1657 /* Don't send glimpse ASTs to liblustre clients.
1658 * They aren't listening for them, and they do
1659 * entirely synchronous I/O anyways. */
1660 if (lck->l_export == NULL ||
1661 lck->l_export->exp_libclient == 1)
1664 if (*arg->liblustre)
1665 *arg->liblustre = 0;
1668 *v = LDLM_LOCK_GET(lck);
1669 } else if ((*v)->l_policy_data.l_extent.start <
1670 lck->l_policy_data.l_extent.start) {
1671 LDLM_LOCK_RELEASE(*v);
1672 *v = LDLM_LOCK_GET(lck);
1675 /* the same policy group - every lock has the
1676 * same extent, so needn't do it any more */
1680 return INTERVAL_ITER_CONT;
1683 static int filter_intent_policy(struct ldlm_namespace *ns,
1684 struct ldlm_lock **lockp, void *req_cookie,
1685 ldlm_mode_t mode, int flags, void *data)
1687 CFS_LIST_HEAD(rpc_list);
1688 struct ptlrpc_request *req = req_cookie;
1689 struct ldlm_lock *lock = *lockp, *l = NULL;
1690 struct ldlm_resource *res = lock->l_resource;
1691 ldlm_processing_policy policy;
1692 struct ost_lvb *res_lvb, *reply_lvb;
1693 struct ldlm_reply *rep;
1695 int idx, rc, tmpflags = 0, only_liblustre = 1;
1696 struct ldlm_interval_tree *tree;
1697 struct filter_intent_args arg;
1698 __u32 repsize[3] = { [MSG_PTLRPC_BODY_OFF] = sizeof(struct ptlrpc_body),
1699 [DLM_LOCKREPLY_OFF] = sizeof(*rep),
1700 [DLM_REPLY_REC_OFF] = sizeof(*reply_lvb) };
1703 policy = ldlm_get_processing_policy(res);
1704 LASSERT(policy != NULL);
1705 LASSERT(req != NULL);
1707 rc = lustre_pack_reply(req, 3, repsize, NULL);
1709 RETURN(req->rq_status = rc);
1711 rep = lustre_msg_buf(req->rq_repmsg, DLM_LOCKREPLY_OFF, sizeof(*rep));
1712 LASSERT(rep != NULL);
1714 reply_lvb = lustre_msg_buf(req->rq_repmsg, DLM_REPLY_REC_OFF,
1715 sizeof(*reply_lvb));
1716 LASSERT(reply_lvb != NULL);
1718 //fixup_handle_for_resent_req(req, lock, &lockh);
1720 /* Call the extent policy function to see if our request can be
1721 * granted, or is blocked.
1722 * If the OST lock has LDLM_FL_HAS_INTENT set, it means a glimpse
1723 * lock, and should not be granted if the lock will be blocked.
1726 LASSERT(ns == res->lr_namespace);
1728 rc = policy(lock, &tmpflags, 0, &err, &rpc_list);
1729 check_res_locked(res);
1731 /* FIXME: we should change the policy function slightly, to not make
1732 * this list at all, since we just turn around and free it */
1733 while (!list_empty(&rpc_list)) {
1734 struct ldlm_lock *wlock =
1735 list_entry(rpc_list.next, struct ldlm_lock, l_cp_ast);
1736 LASSERT((lock->l_flags & LDLM_FL_AST_SENT) == 0);
1737 LASSERT(lock->l_flags & LDLM_FL_CP_REQD);
1738 lock->l_flags &= ~LDLM_FL_CP_REQD;
1739 list_del_init(&wlock->l_cp_ast);
1740 LDLM_LOCK_RELEASE(wlock);
1743 /* The lock met with no resistance; we're finished. */
1744 if (rc == LDLM_ITER_CONTINUE) {
1745 /* do not grant locks to the liblustre clients: they cannot
1746 * handle ASTs robustly. We need to do this while still
1747 * holding ns_lock to avoid the lock remaining on the res_link
1748 * list (and potentially being added to l_pending_list by an
1749 * AST) when we are going to drop this lock ASAP. */
1750 if (lock->l_export->exp_libclient ||
1751 OBD_FAIL_TIMEOUT(OBD_FAIL_LDLM_GLIMPSE, 2)) {
1752 ldlm_resource_unlink_lock(lock);
1753 err = ELDLM_LOCK_ABORTED;
1755 err = ELDLM_LOCK_REPLACED;
1761 /* Do not grant any lock, but instead send GL callbacks. The extent
1762 * policy nicely created a list of all PW locks for us. We will choose
1763 * the highest of those which are larger than the size in the LVB, if
1764 * any, and perform a glimpse callback. */
1765 res_lvb = res->lr_lvb_data;
1766 LASSERT(res_lvb != NULL);
1767 *reply_lvb = *res_lvb;
1770 * ->ns_lock guarantees that no new locks are granted, and,
1771 * therefore, that res->lr_lvb_data cannot increase beyond the
1772 * end of already granted lock. As a result, it is safe to
1773 * check against "stale" reply_lvb->lvb_size value without
1776 arg.size = reply_lvb->lvb_size;
1778 arg.liblustre = &only_liblustre;
1779 for (idx = 0; idx < LCK_MODE_NUM; idx++) {
1780 tree = &res->lr_itree[idx];
1781 if (tree->lit_mode == LCK_PR)
1784 interval_iterate_reverse(tree->lit_root,
1785 filter_intent_cb, &arg);
1789 /* There were no PW locks beyond the size in the LVB; finished. */
1791 if (only_liblustre) {
1792 /* If we discovered a liblustre client with a PW lock,
1793 * however, the LVB may be out of date! The LVB is
1794 * updated only on glimpse (which we don't do for
1795 * liblustre clients) and cancel (which the client
1796 * obviously has not yet done). So if it has written
1797 * data but kept the lock, the LVB is stale and needs
1798 * to be updated from disk.
1800 * Of course, this will all disappear when we switch to
1801 * taking liblustre locks on the OST. */
1802 ldlm_res_lvbo_update(res, NULL, 0, 1);
1804 RETURN(ELDLM_LOCK_ABORTED);
1808 * This check is for lock taken in filter_prepare_destroy() that does
1809 * not have l_glimpse_ast set. So the logic is: if there is a lock
1810 * with no l_glimpse_ast set, this object is being destroyed already.
1812 * Hence, if you are grabbing DLM locks on the server, always set
1813 * non-NULL glimpse_ast (e.g., ldlm_request.c:ldlm_glimpse_ast()).
1815 if (l->l_glimpse_ast == NULL) {
1816 /* We are racing with unlink(); just return -ENOENT */
1817 rep->lock_policy_res1 = -ENOENT;
1821 LASSERTF(l->l_glimpse_ast != NULL, "l == %p", l);
1822 rc = l->l_glimpse_ast(l, NULL); /* this will update the LVB */
1823 /* Update the LVB from disk if the AST failed (this is a legal race) */
1825 * XXX nikita: situation when ldlm_server_glimpse_ast() failed before
1826 * sending ast is not handled. This can result in lost client writes.
1829 ldlm_res_lvbo_update(res, NULL, 0, 1);
1832 *reply_lvb = *res_lvb;
1836 LDLM_LOCK_RELEASE(l);
1838 RETURN(ELDLM_LOCK_ABORTED);
1842 * per-obd_device iobuf pool.
1844 * To avoid memory deadlocks in low-memory setups, amount of dynamic
1845 * allocations in write-path has to be minimized (see bug 5137).
1847 * Pages, niobuf_local's and niobuf_remote's are pre-allocated and attached to
1848 * OST threads (see ost_thread_{init,done}()).
1850 * "iobuf's" used by filter cannot be attached to OST thread, however, because
1851 * at the OST layer there are only (potentially) multiple obd_device of type
1852 * unknown at the time of OST thread creation.
1854 * Instead array of iobuf's is attached to struct filter_obd (->fo_iobuf_pool
1855 * field). This array has size OST_MAX_THREADS, so that each OST thread uses
1856 * it's very own iobuf.
1860 * filter_kiobuf_pool_init()
1862 * filter_kiobuf_pool_done()
1864 * filter_iobuf_get()
1866 * operate on this array. They are "generic" in a sense that they don't depend
1867 * on actual type of iobuf's (the latter depending on Linux kernel version).
1871 * destroy pool created by filter_iobuf_pool_init
1873 static void filter_iobuf_pool_done(struct filter_obd *filter)
1875 struct filter_iobuf **pool;
1880 pool = filter->fo_iobuf_pool;
1882 for (i = 0; i < filter->fo_iobuf_count; ++ i) {
1883 if (pool[i] != NULL)
1884 filter_free_iobuf(pool[i]);
1886 OBD_FREE(pool, filter->fo_iobuf_count * sizeof pool[0]);
1887 filter->fo_iobuf_pool = NULL;
1893 * pre-allocate pool of iobuf's to be used by filter_{prep,commit}rw_write().
1895 static int filter_iobuf_pool_init(struct filter_obd *filter)
1902 OBD_ALLOC_GFP(filter->fo_iobuf_pool, OSS_THREADS_MAX * sizeof(*pool),
1904 if (filter->fo_iobuf_pool == NULL)
1907 filter->fo_iobuf_count = OSS_THREADS_MAX;
1912 /* Return iobuf allocated for @thread_id. We don't know in advance how
1913 * many threads there will be so we allocate a large empty array and only
1914 * fill in those slots that are actually in use.
1915 * If we haven't allocated a pool entry for this thread before, do so now. */
1916 void *filter_iobuf_get(struct filter_obd *filter, struct obd_trans_info *oti)
1918 int thread_id = oti ? oti->oti_thread_id : -1;
1919 struct filter_iobuf *pool = NULL;
1920 struct filter_iobuf **pool_place = NULL;
1922 if (thread_id >= 0) {
1923 LASSERT(thread_id < filter->fo_iobuf_count);
1924 pool = *(pool_place = &filter->fo_iobuf_pool[thread_id]);
1927 if (unlikely(pool == NULL)) {
1928 pool = filter_alloc_iobuf(filter, OBD_BRW_WRITE,
1929 PTLRPC_MAX_BRW_PAGES);
1930 if (pool_place != NULL)
1937 /* mount the file system (secretly). lustre_cfg parameters are:
1940 * 3 = flags: failover=f, failout=n
1943 int filter_common_setup(struct obd_device *obd, struct lustre_cfg* lcfg,
1946 struct filter_obd *filter = &obd->u.filter;
1947 struct vfsmount *mnt;
1948 struct lustre_mount_info *lmi;
1949 struct obd_uuid uuid;
1957 if (lcfg->lcfg_bufcount < 3 ||
1958 LUSTRE_CFG_BUFLEN(lcfg, 1) < 1 ||
1959 LUSTRE_CFG_BUFLEN(lcfg, 2) < 1)
1962 lmi = server_get_mount(obd->obd_name);
1964 /* We already mounted in lustre_fill_super.
1965 lcfg bufs 1, 2, 4 (device, fstype, mount opts) are ignored.*/
1966 struct lustre_sb_info *lsi = s2lsi(lmi->lmi_sb);
1968 obd->obd_fsops = fsfilt_get_ops(MT_STR(lsi->lsi_ldd));
1970 /* old path - used by lctl */
1971 CERROR("Using old MDS mount method\n");
1972 mnt = ll_kern_mount(lustre_cfg_string(lcfg, 2),
1973 MS_NOATIME|MS_NODIRATIME,
1974 lustre_cfg_string(lcfg, 1), option);
1977 LCONSOLE_ERROR_MSG(0x135, "Can't mount disk %s (%d)\n",
1978 lustre_cfg_string(lcfg, 1), rc);
1982 obd->obd_fsops = fsfilt_get_ops(lustre_cfg_string(lcfg, 2));
1984 if (IS_ERR(obd->obd_fsops))
1985 GOTO(err_mntput, rc = PTR_ERR(obd->obd_fsops));
1987 rc = filter_iobuf_pool_init(filter);
1991 LASSERT(!lvfs_check_rdonly(lvfs_sbdev(mnt->mnt_sb)));
1993 /* failover is the default */
1994 obd->obd_replayable = 1;
1996 if (lcfg->lcfg_bufcount > 3 && LUSTRE_CFG_BUFLEN(lcfg, 3) > 0) {
1997 str = lustre_cfg_string(lcfg, 3);
1998 if (strchr(str, 'n')) {
1999 CWARN("%s: recovery disabled\n", obd->obd_name);
2000 obd->obd_replayable = 0;
2004 filter->fo_vfsmnt = mnt;
2005 obd->u.obt.obt_sb = mnt->mnt_sb;
2006 filter->fo_fstype = mnt->mnt_sb->s_type->name;
2007 CDEBUG(D_SUPER, "%s: mnt = %p\n", filter->fo_fstype, mnt);
2009 fsfilt_setup(obd, obd->u.obt.obt_sb);
2011 OBD_SET_CTXT_MAGIC(&obd->obd_lvfs_ctxt);
2012 obd->obd_lvfs_ctxt.pwdmnt = mnt;
2013 obd->obd_lvfs_ctxt.pwd = mnt->mnt_root;
2014 obd->obd_lvfs_ctxt.fs = get_ds();
2015 obd->obd_lvfs_ctxt.cb_ops = filter_lvfs_ops;
2017 init_mutex(&filter->fo_init_lock);
2018 filter->fo_committed_group = 0;
2020 rc = filter_prep(obd);
2024 filter->fo_destroys_in_progress = 0;
2025 for (i = 0; i < 32; i++)
2026 sema_init(&filter->fo_create_locks[i], 1);
2028 spin_lock_init(&filter->fo_translock);
2029 spin_lock_init(&filter->fo_objidlock);
2030 CFS_INIT_LIST_HEAD(&filter->fo_export_list);
2031 sema_init(&filter->fo_alloc_lock, 1);
2032 init_brw_stats(&filter->fo_filter_stats);
2033 filter->fo_read_cache = 1; /* enable read-only cache by default */
2034 filter->fo_writethrough_cache = 0; /* disable writethrough cache */
2035 filter->fo_readcache_max_filesize = FILTER_MAX_CACHE_SIZE;
2036 filter->fo_fmd_max_num = FILTER_FMD_MAX_NUM_DEFAULT;
2037 filter->fo_fmd_max_age = FILTER_FMD_MAX_AGE_DEFAULT;
2039 CFS_INIT_LIST_HEAD(&filter->fo_llog_list);
2040 spin_lock_init(&filter->fo_llog_list_lock);
2042 rwlock_init(&filter->fo_sptlrpc_lock);
2043 sptlrpc_rule_set_init(&filter->fo_sptlrpc_rset);
2045 filter->fo_fl_oss_capa = 0;
2046 CFS_INIT_LIST_HEAD(&filter->fo_capa_keys);
2047 filter->fo_capa_hash = init_capa_hash();
2048 if (filter->fo_capa_hash == NULL)
2049 GOTO(err_ops, rc = -ENOMEM);
2051 sprintf(ns_name, "filter-%s", obd->obd_uuid.uuid);
2052 obd->obd_namespace = ldlm_namespace_new(obd, ns_name, LDLM_NAMESPACE_SERVER,
2053 LDLM_NAMESPACE_GREEDY);
2054 if (obd->obd_namespace == NULL)
2055 GOTO(err_post, rc = -ENOMEM);
2056 obd->obd_namespace->ns_lvbp = obd;
2057 obd->obd_namespace->ns_lvbo = &filter_lvbo;
2058 ldlm_register_intent(obd->obd_namespace, filter_intent_policy);
2060 ptlrpc_init_client(LDLM_CB_REQUEST_PORTAL, LDLM_CB_REPLY_PORTAL,
2061 "filter_ldlm_cb_client", &obd->obd_ldlm_client);
2063 rc = obd_llog_init(obd, &obd->obd_olg, obd, 1, NULL, NULL);
2065 CERROR("failed to setup llogging subsystems\n");
2069 rc = lquota_setup(filter_quota_interface_ref, obd);
2073 q = bdev_get_queue(mnt->mnt_sb->s_bdev);
2074 if (q->max_sectors < q->max_hw_sectors &&
2075 q->max_sectors < PTLRPC_MAX_BRW_SIZE >> 9)
2076 LCONSOLE_INFO("%s: underlying device %s should be tuned "
2077 "for larger I/O requests: max_sectors = %u "
2078 "could be up to max_hw_sectors=%u\n",
2079 obd->obd_name, mnt->mnt_sb->s_id,
2080 q->max_sectors, q->max_hw_sectors);
2082 uuid_ptr = fsfilt_uuid(obd, obd->u.obt.obt_sb);
2083 if (uuid_ptr != NULL) {
2084 class_uuid_unparse(uuid_ptr, &uuid);
2090 label = fsfilt_get_label(obd, obd->u.obt.obt_sb);
2092 if (obd->obd_recovering) {
2093 LCONSOLE_WARN("OST %s now serving %s (%s%s%s), but will be in "
2094 "recovery for at least %d:%.02d, or until %d "
2095 "client%s reconnect. During this time new clients"
2096 " will not be allowed to connect. "
2097 "Recovery progress can be monitored by watching "
2098 "/proc/fs/lustre/obdfilter/%s/recovery_status.\n",
2099 obd->obd_name, lustre_cfg_string(lcfg, 1),
2100 label ?: "", label ? "/" : "", str,
2101 obd->obd_recovery_timeout / 60,
2102 obd->obd_recovery_timeout % 60,
2103 obd->obd_max_recoverable_clients,
2104 (obd->obd_max_recoverable_clients == 1) ? "":"s",
2107 LCONSOLE_INFO("OST %s now serving %s (%s%s%s) with recovery "
2108 "%s\n", obd->obd_name, lustre_cfg_string(lcfg, 1),
2109 label ?: "", label ? "/" : "", str,
2110 obd->obd_replayable ? "enabled" : "disabled");
2118 fsfilt_put_ops(obd->obd_fsops);
2119 filter_iobuf_pool_done(filter);
2121 server_put_mount(obd->obd_name, mnt);
2122 obd->u.obt.obt_sb = 0;
2126 static int filter_setup(struct obd_device *obd, struct lustre_cfg* lcfg)
2128 struct lprocfs_static_vars lvars;
2133 CLASSERT(offsetof(struct obd_device, u.obt) ==
2134 offsetof(struct obd_device, u.filter.fo_obt));
2136 if (!LUSTRE_CFG_BUFLEN(lcfg, 1) || !LUSTRE_CFG_BUFLEN(lcfg, 2))
2139 /* 2.6.9 selinux wants a full option page for do_kern_mount (bug6471) */
2140 OBD_PAGE_ALLOC(page, CFS_ALLOC_STD);
2143 addr = (unsigned long)cfs_page_address(page);
2144 clear_page((void *)addr);
2146 /* lprocfs must be setup before the filter so state can be safely added
2147 * to /proc incrementally as the filter is setup */
2148 lprocfs_filter_init_vars(&lvars);
2149 if (lprocfs_obd_setup(obd, lvars.obd_vars) == 0 &&
2150 lprocfs_alloc_obd_stats(obd, LPROC_FILTER_LAST) == 0) {
2151 /* Init obdfilter private stats here */
2152 lprocfs_counter_init(obd->obd_stats, LPROC_FILTER_READ_BYTES,
2153 LPROCFS_CNTR_AVGMINMAX,
2154 "read_bytes", "bytes");
2155 lprocfs_counter_init(obd->obd_stats, LPROC_FILTER_WRITE_BYTES,
2156 LPROCFS_CNTR_AVGMINMAX,
2157 "write_bytes", "bytes");
2158 lprocfs_counter_init(obd->obd_stats, LPROC_FILTER_GET_PAGE,
2159 LPROCFS_CNTR_AVGMINMAX|LPROCFS_CNTR_STDDEV,
2160 "get_page", "usec");
2161 lprocfs_counter_init(obd->obd_stats, LPROC_FILTER_NO_PAGE,
2162 LPROCFS_CNTR_AVGMINMAX,
2163 "get_page_failures", "num");
2164 lprocfs_counter_init(obd->obd_stats, LPROC_FILTER_CACHE_ACCESS,
2165 LPROCFS_CNTR_AVGMINMAX,
2166 "cache_access", "pages");
2167 lprocfs_counter_init(obd->obd_stats, LPROC_FILTER_CACHE_HIT,
2168 LPROCFS_CNTR_AVGMINMAX,
2169 "cache_hit", "pages");
2170 lprocfs_counter_init(obd->obd_stats, LPROC_FILTER_CACHE_MISS,
2171 LPROCFS_CNTR_AVGMINMAX,
2172 "cache_miss", "pages");
2174 lproc_filter_attach_seqstat(obd);
2175 obd->obd_proc_exports_entry = lprocfs_register("exports",
2176 obd->obd_proc_entry,
2178 if (IS_ERR(obd->obd_proc_exports_entry)) {
2179 rc = PTR_ERR(obd->obd_proc_exports_entry);
2180 CERROR("error %d setting up lprocfs for %s\n",
2182 obd->obd_proc_exports_entry = NULL;
2185 if (obd->obd_proc_exports_entry)
2186 lprocfs_add_simple(obd->obd_proc_exports_entry, "clear",
2187 lprocfs_nid_stats_clear_read,
2188 lprocfs_nid_stats_clear_write, obd, NULL);
2190 memcpy((void *)addr, lustre_cfg_buf(lcfg, 4),
2191 LUSTRE_CFG_BUFLEN(lcfg, 4));
2192 rc = filter_common_setup(obd, lcfg, (void *)addr);
2193 OBD_PAGE_FREE(page);
2196 lprocfs_remove_proc_entry("clear", obd->obd_proc_exports_entry);
2197 lprocfs_free_per_client_stats(obd);
2198 lprocfs_free_obd_stats(obd);
2199 lprocfs_obd_cleanup(obd);
2205 static struct llog_operations filter_mds_ost_repl_logops;
2207 static struct llog_operations filter_size_orig_logops = {
2208 .lop_setup = llog_obd_origin_setup,
2209 .lop_cleanup = llog_obd_origin_cleanup,
2210 .lop_add = llog_obd_origin_add
2213 static int filter_olg_fini(struct obd_llog_group *olg)
2215 struct llog_ctxt *ctxt;
2216 int rc = 0, rc2 = 0;
2219 ctxt = llog_group_get_ctxt(olg, LLOG_MDS_OST_REPL_CTXT);
2221 rc = llog_cleanup(ctxt);
2223 ctxt = llog_group_get_ctxt(olg, LLOG_SIZE_ORIG_CTXT);
2225 rc2 = llog_cleanup(ctxt);
2233 filter_olg_init(struct obd_device *obd, struct obd_llog_group *olg,
2234 struct obd_device *tgt)
2239 rc = llog_setup(obd, olg, LLOG_MDS_OST_REPL_CTXT, tgt, 0, NULL,
2240 &filter_mds_ost_repl_logops);
2244 rc = llog_setup(obd, olg, LLOG_SIZE_ORIG_CTXT, tgt, 0, NULL,
2245 &filter_size_orig_logops);
2251 filter_olg_fini(olg);
2256 * Init the default olg, which is embeded in the obd_device, for filter.
2259 filter_default_olg_init(struct obd_device *obd, struct obd_llog_group *olg,
2260 struct obd_device *tgt)
2262 struct filter_obd *filter = &obd->u.filter;
2263 struct llog_ctxt *ctxt;
2267 filter->fo_lcm = llog_recov_thread_init(obd->obd_name);
2268 if (!filter->fo_lcm)
2271 filter_mds_ost_repl_logops = llog_client_ops;
2272 filter_mds_ost_repl_logops.lop_cancel = llog_obd_repl_cancel;
2273 filter_mds_ost_repl_logops.lop_connect = llog_obd_repl_connect;
2274 filter_mds_ost_repl_logops.lop_sync = llog_obd_repl_sync;
2276 rc = filter_olg_init(obd, olg, tgt);
2278 GOTO(cleanup_lcm, rc);
2280 ctxt = llog_group_get_ctxt(olg, LLOG_MDS_OST_REPL_CTXT);
2282 CERROR("Can't get ctxt for %p:%x\n", olg,
2283 LLOG_MDS_OST_REPL_CTXT);
2284 GOTO(cleanup_olg, rc = -ENODEV);
2286 ctxt->loc_lcm = filter->fo_lcm;
2287 ctxt->llog_proc_cb = filter_recov_log_mds_ost_cb;
2288 llog_ctxt_put(ctxt);
2292 filter_olg_fini(olg);
2294 llog_recov_thread_fini(filter->fo_lcm, 1);
2295 filter->fo_lcm = NULL;
2300 filter_llog_init(struct obd_device *obd, struct obd_llog_group *olg,
2301 struct obd_device *tgt, int count, struct llog_catid *catid,
2302 struct obd_uuid *uuid)
2304 struct filter_obd *filter = &obd->u.filter;
2305 struct llog_ctxt *ctxt;
2309 LASSERT(olg != NULL);
2310 if (olg == &obd->obd_olg)
2311 return filter_default_olg_init(obd, olg, tgt);
2313 LASSERT(filter->fo_lcm != NULL);
2314 rc = filter_olg_init(obd, olg, tgt);
2317 ctxt = llog_group_get_ctxt(olg, LLOG_MDS_OST_REPL_CTXT);
2319 CERROR("Can't get ctxt for %p:%x\n", olg,
2320 LLOG_MDS_OST_REPL_CTXT);
2321 filter_olg_fini(olg);
2324 ctxt->llog_proc_cb = filter_recov_log_mds_ost_cb;
2325 ctxt->loc_lcm = filter->fo_lcm;
2326 llog_ctxt_put(ctxt);
2330 static int filter_llog_finish(struct obd_device *obd, int count)
2332 struct filter_obd *filter = &obd->u.filter;
2333 struct llog_ctxt *ctxt;
2336 ctxt = llog_group_get_ctxt(&obd->obd_olg, LLOG_MDS_OST_REPL_CTXT);
2337 LASSERT(ctxt != NULL);
2338 mutex_down(&ctxt->loc_sem);
2339 if (ctxt->loc_imp) {
2341 * Balance class_import_get() in llog_receptor_accept(). This
2342 * is safe to do here, as llog is already synchronized and its
2345 class_import_put(ctxt->loc_imp);
2346 ctxt->loc_imp = NULL;
2348 mutex_up(&ctxt->loc_sem);
2349 llog_ctxt_put(ctxt);
2351 if (filter->fo_lcm) {
2352 llog_recov_thread_fini(filter->fo_lcm, obd->obd_force);
2353 filter->fo_lcm = NULL;
2355 RETURN(filter_olg_fini(&obd->obd_olg));
2359 * Find the group llog according to group index in the llog group list.
2361 static struct obd_llog_group *
2362 filter_find_olg_internal(struct filter_obd *filter, int group)
2364 struct obd_llog_group *olg;
2366 LASSERT_SPIN_LOCKED(&filter->fo_llog_list_lock);
2367 list_for_each_entry(olg, &filter->fo_llog_list, olg_list) {
2368 if (olg->olg_group == group)
2375 * Find the group llog according to group index on the filter
2377 struct obd_llog_group *filter_find_olg(struct obd_device *obd, int group)
2379 struct obd_llog_group *olg = NULL;
2380 struct filter_obd *filter;
2382 filter = &obd->u.filter;
2384 if (group == FILTER_GROUP_LLOG)
2385 RETURN(&obd->obd_olg);
2387 spin_lock(&filter->fo_llog_list_lock);
2388 olg = filter_find_olg_internal(filter, group);
2389 spin_unlock(&filter->fo_llog_list_lock);
2394 * Find the llog_group of the filter according to the group. If it can not
2395 * find, create the llog_group, which only happens when mds is being synced
2398 struct obd_llog_group *filter_find_create_olg(struct obd_device *obd, int group)
2400 struct obd_llog_group *olg = NULL;
2401 struct filter_obd *filter;
2404 filter = &obd->u.filter;
2406 if (group == FILTER_GROUP_LLOG)
2407 RETURN(&obd->obd_olg);
2409 spin_lock(&filter->fo_llog_list_lock);
2410 olg = filter_find_olg_internal(filter, group);
2412 if (olg->olg_initializing) {
2413 GOTO(out_unlock, olg = ERR_PTR(-EBUSY));
2415 GOTO(out_unlock, olg);
2420 GOTO(out_unlock, olg = ERR_PTR(-ENOMEM));
2422 llog_group_init(olg, group);
2423 list_add(&olg->olg_list, &filter->fo_llog_list);
2424 olg->olg_initializing = 1;
2425 spin_unlock(&filter->fo_llog_list_lock);
2427 rc = llog_cat_initialize(obd, olg, 1, NULL);
2429 spin_lock(&filter->fo_llog_list_lock);
2430 list_del(&olg->olg_list);
2431 spin_unlock(&filter->fo_llog_list_lock);
2433 GOTO(out, olg = ERR_PTR(-ENOMEM));
2435 spin_lock(&filter->fo_llog_list_lock);
2436 olg->olg_initializing = 0;
2437 spin_unlock(&filter->fo_llog_list_lock);
2438 CDEBUG(D_OTHER, "%s: new llog group %u (0x%p)\n",
2439 obd->obd_name, group, olg);
2444 spin_unlock(&filter->fo_llog_list_lock);
2448 static int filter_llog_connect(struct obd_export *exp,
2449 struct llogd_conn_body *body)
2451 struct obd_device *obd = exp->exp_obd;
2452 struct llog_ctxt *ctxt;
2453 struct obd_llog_group *olg;
2457 CDEBUG(D_OTHER, "%s: LLog connect for: "LPX64"/"LPX64":%x\n",
2458 obd->obd_name, body->lgdc_logid.lgl_oid,
2459 body->lgdc_logid.lgl_ogr, body->lgdc_logid.lgl_ogen);
2461 olg = filter_find_olg(obd, body->lgdc_logid.lgl_ogr);
2463 CERROR(" %s: can not find olg of group %d\n",
2464 obd->obd_name, (int)body->lgdc_logid.lgl_ogr);
2467 llog_group_set_export(olg, exp);
2469 ctxt = llog_group_get_ctxt(olg, body->lgdc_ctxt_idx);
2470 LASSERTF(ctxt != NULL, "ctxt is not null, ctxt idx %d \n",
2471 body->lgdc_ctxt_idx);
2473 CWARN("%s: Recovery from log "LPX64"/"LPX64":%x\n",
2474 obd->obd_name, body->lgdc_logid.lgl_oid,
2475 body->lgdc_logid.lgl_ogr, body->lgdc_logid.lgl_ogen);
2477 rc = llog_connect(ctxt, &body->lgdc_logid,
2478 &body->lgdc_gen, NULL);
2479 llog_ctxt_put(ctxt);
2481 CERROR("failed to connect rc %d idx %d\n", rc,
2482 body->lgdc_ctxt_idx);
2487 static int filter_llog_preclean(struct obd_device *obd)
2489 struct obd_llog_group *olg, *tmp;
2490 struct filter_obd *filter;
2491 struct list_head remove_list;
2495 rc = obd_llog_finish(obd, 0);
2497 CERROR("failed to cleanup llogging subsystem\n");
2499 filter = &obd->u.filter;
2500 CFS_INIT_LIST_HEAD(&remove_list);
2502 spin_lock(&filter->fo_llog_list_lock);
2503 while (!list_empty(&filter->fo_llog_list)) {
2504 olg = list_entry(filter->fo_llog_list.next,
2505 struct obd_llog_group, olg_list);
2506 list_del(&olg->olg_list);
2507 list_add(&olg->olg_list, &remove_list);
2509 spin_unlock(&filter->fo_llog_list_lock);
2511 list_for_each_entry_safe(olg, tmp, &remove_list, olg_list) {
2512 list_del_init(&olg->olg_list);
2513 rc = filter_olg_fini(olg);
2515 CERROR("failed to cleanup llogging subsystem for %u\n",
2523 static int filter_precleanup(struct obd_device *obd,
2524 enum obd_cleanup_stage stage)
2530 case OBD_CLEANUP_EARLY:
2532 case OBD_CLEANUP_EXPORTS:
2533 target_cleanup_recovery(obd);
2534 rc = filter_llog_preclean(obd);
2540 static int filter_cleanup(struct obd_device *obd)
2542 struct filter_obd *filter = &obd->u.filter;
2546 LCONSOLE_WARN("%s: shutting down for failover; client state "
2547 "will be preserved.\n", obd->obd_name);
2549 if (!list_empty(&obd->obd_exports)) {
2550 CERROR("%s: still has clients!\n", obd->obd_name);
2551 class_disconnect_exports(obd);
2552 if (!list_empty(&obd->obd_exports)) {
2553 CERROR("still has exports after forced cleanup?\n");
2558 lprocfs_remove_proc_entry("clear", obd->obd_proc_exports_entry);
2559 lprocfs_free_per_client_stats(obd);
2560 lprocfs_free_obd_stats(obd);
2561 lprocfs_obd_cleanup(obd);
2562 lquota_cleanup(filter_quota_interface_ref, obd);
2564 /* Stop recovery before namespace cleanup. */
2565 target_stop_recovery_thread(obd);
2566 target_cleanup_recovery(obd);
2568 ldlm_namespace_free(obd->obd_namespace, NULL, obd->obd_force);
2569 obd->obd_namespace = NULL;
2571 sptlrpc_rule_set_free(&filter->fo_sptlrpc_rset);
2573 if (obd->u.obt.obt_sb == NULL)
2578 LL_DQUOT_OFF(obd->u.obt.obt_sb);
2579 shrink_dcache_sb(obd->u.obt.obt_sb);
2581 server_put_mount(obd->obd_name, filter->fo_vfsmnt);
2582 obd->u.obt.obt_sb = NULL;
2584 fsfilt_put_ops(obd->obd_fsops);
2586 filter_iobuf_pool_done(filter);
2588 LCONSOLE_INFO("OST %s has stopped.\n", obd->obd_name);
2593 static int filter_connect_internal(struct obd_export *exp,
2594 struct obd_connect_data *data)
2596 struct filter_export_data *fed = &exp->exp_filter_data;
2601 CDEBUG(D_RPCTRACE, "%s: cli %s/%p ocd_connect_flags: "LPX64
2602 " ocd_version: %x ocd_grant: %d ocd_index: %u\n",
2603 exp->exp_obd->obd_name, exp->exp_client_uuid.uuid, exp,
2604 data->ocd_connect_flags, data->ocd_version,
2605 data->ocd_grant, data->ocd_index);
2607 if (fed->fed_group != 0 && fed->fed_group != data->ocd_group) {
2608 CWARN("!!! This export (nid %s) used object group %d "
2609 "earlier; now it's trying to use group %d! This could "
2610 "be a bug in the MDS. Please report to "
2611 "http://bugzilla.lustre.org/\n",
2612 obd_export_nid2str(exp), fed->fed_group,data->ocd_group);
2615 fed->fed_group = data->ocd_group;
2617 data->ocd_connect_flags &= OST_CONNECT_SUPPORTED;
2618 exp->exp_connect_flags = data->ocd_connect_flags;
2619 data->ocd_version = LUSTRE_VERSION_CODE;
2621 if (exp->exp_connect_flags & OBD_CONNECT_GRANT) {
2622 obd_size left, want;
2624 spin_lock(&exp->exp_obd->obd_osfs_lock);
2625 left = filter_grant_space_left(exp);
2626 want = data->ocd_grant;
2627 filter_grant(exp, fed->fed_grant, want, left);
2628 data->ocd_grant = fed->fed_grant;
2629 spin_unlock(&exp->exp_obd->obd_osfs_lock);
2631 CDEBUG(D_CACHE, "%s: cli %s/%p ocd_grant: %d want: "
2632 LPU64" left: "LPU64"\n", exp->exp_obd->obd_name,
2633 exp->exp_client_uuid.uuid, exp,
2634 data->ocd_grant, want, left);
2637 if (data->ocd_connect_flags & OBD_CONNECT_INDEX) {
2638 struct filter_obd *filter = &exp->exp_obd->u.filter;
2639 struct lr_server_data *lsd = filter->fo_fsd;
2640 int index = le32_to_cpu(lsd->lsd_ost_index);
2642 if (!(lsd->lsd_feature_compat &
2643 cpu_to_le32(OBD_COMPAT_OST))) {
2644 /* this will only happen on the first connect */
2645 lsd->lsd_ost_index = cpu_to_le32(data->ocd_index);
2646 lsd->lsd_feature_compat |= cpu_to_le32(OBD_COMPAT_OST);
2647 filter_update_server_data(exp->exp_obd,
2648 filter->fo_rcvd_filp, lsd, 1);
2649 } else if (index != data->ocd_index) {
2650 LCONSOLE_ERROR_MSG(0x136, "Connection from %s to index"
2651 " %u doesn't match actual OST index"
2652 " %u in last_rcvd file, bad "
2654 obd_export_nid2str(exp), index,
2660 if (OBD_FAIL_CHECK(OBD_FAIL_OST_BRW_SIZE)) {
2661 data->ocd_brw_size = 65536;
2662 } else if (data->ocd_connect_flags & OBD_CONNECT_BRW_SIZE) {
2663 data->ocd_brw_size = min(data->ocd_brw_size,
2664 (__u32)(PTLRPC_MAX_BRW_PAGES << CFS_PAGE_SHIFT));
2665 LASSERT(data->ocd_brw_size);
2668 if (data->ocd_connect_flags & OBD_CONNECT_CKSUM) {
2669 __u32 cksum_types = data->ocd_cksum_types;
2671 /* The client set in ocd_cksum_types the checksum types it
2672 * supports. We have to mask off the algorithms that we don't
2674 if (cksum_types & OBD_CKSUM_ALL)
2675 data->ocd_cksum_types &= OBD_CKSUM_ALL;
2677 data->ocd_cksum_types = OBD_CKSUM_CRC32;
2679 CDEBUG(D_RPCTRACE, "%s: cli %s supports cksum type %x, return "
2680 "%x\n", exp->exp_obd->obd_name,
2681 obd_export_nid2str(exp), cksum_types,
2682 data->ocd_cksum_types);
2684 /* This client does not support OBD_CONNECT_CKSUM
2685 * fall back to CRC32 */
2686 CDEBUG(D_RPCTRACE, "%s: cli %s does not support "
2687 "OBD_CONNECT_CKSUM, CRC32 will be used\n",
2688 exp->exp_obd->obd_name,
2689 obd_export_nid2str(exp));
2692 /* FIXME: Do the same with the MDS UUID and fsd_peeruuid.
2693 * FIXME: We don't strictly need the COMPAT flag for that,
2694 * FIXME: as fsd_peeruuid[0] will tell us if that is set.
2695 * FIXME: We needed it for the index, as index 0 is valid. */
2700 static int filter_reconnect(const struct lu_env *env,
2701 struct obd_export *exp, struct obd_device *obd,
2702 struct obd_uuid *cluuid,
2703 struct obd_connect_data *data,
2709 if (exp == NULL || obd == NULL || cluuid == NULL)
2712 rc = filter_connect_internal(exp, data);
2714 filter_export_stats_init(obd, exp, localdata);
2719 /* nearly identical to mds_connect */
2720 static int filter_connect(const struct lu_env *env,
2721 struct lustre_handle *conn, struct obd_device *obd,
2722 struct obd_uuid *cluuid,
2723 struct obd_connect_data *data, void *localdata)
2725 struct lvfs_run_ctxt saved;
2726 struct obd_export *exp;
2727 struct filter_export_data *fed;
2728 struct lsd_client_data *lcd = NULL;
2733 if (conn == NULL || obd == NULL || cluuid == NULL)
2736 rc = class_connect(conn, obd, cluuid);
2739 exp = class_conn2export(conn);
2740 LASSERT(exp != NULL);
2742 fed = &exp->exp_filter_data;
2744 rc = filter_connect_internal(exp, data);
2748 filter_export_stats_init(obd, exp, localdata);
2749 if (obd->obd_replayable) {
2750 OBD_ALLOC(lcd, sizeof(*lcd));
2752 CERROR("filter: out of memory for client data\n");
2753 GOTO(cleanup, rc = -ENOMEM);
2756 memcpy(lcd->lcd_uuid, cluuid, sizeof(lcd->lcd_uuid));
2758 rc = filter_client_add(obd, exp, -1);
2763 group = data->ocd_group;
2767 CWARN("%s: Received MDS connection ("LPX64"); group %d\n",
2768 obd->obd_name, exp->exp_handle.h_cookie, group);
2770 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
2771 rc = filter_read_groups(obd, group, 1);
2772 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
2774 CERROR("can't read group %u\n", group);
2784 fed->fed_lcd = NULL;
2786 class_disconnect(exp);
2788 class_export_put(exp);
2794 /* Do extra sanity checks for grant accounting. We do this at connect,
2795 * disconnect, and statfs RPC time, so it shouldn't be too bad. We can
2796 * always get rid of it or turn it off when we know accounting is good. */
2797 static void filter_grant_sanity_check(struct obd_device *obd, const char *func)
2799 struct filter_export_data *fed;
2800 struct obd_export *exp;
2801 obd_size maxsize = obd->obd_osfs.os_blocks * obd->obd_osfs.os_bsize;
2802 obd_size tot_dirty = 0, tot_pending = 0, tot_granted = 0;
2803 obd_size fo_tot_dirty, fo_tot_pending, fo_tot_granted;
2805 if (list_empty(&obd->obd_exports))
2808 /* We don't want to do this for large machines that do lots of
2809 mounts or unmounts. It burns... */
2810 if (obd->obd_num_exports > 100)
2813 spin_lock(&obd->obd_osfs_lock);
2814 spin_lock(&obd->obd_dev_lock);
2815 list_for_each_entry(exp, &obd->obd_exports, exp_obd_chain) {
2817 fed = &exp->exp_filter_data;
2818 if (fed->fed_grant < 0 || fed->fed_pending < 0 ||
2821 if (maxsize > 0) { /* we may not have done a statfs yet */
2822 LASSERTF(fed->fed_grant + fed->fed_pending <= maxsize,
2823 "%s: cli %s/%p %ld+%ld > "LPU64"\n", func,
2824 exp->exp_client_uuid.uuid, exp,
2825 fed->fed_grant, fed->fed_pending, maxsize);
2826 LASSERTF(fed->fed_dirty <= maxsize,
2827 "%s: cli %s/%p %ld > "LPU64"\n", func,
2828 exp->exp_client_uuid.uuid, exp,
2829 fed->fed_dirty, maxsize);
2832 CERROR("%s: cli %s/%p dirty %ld pend %ld grant %ld\n",
2833 obd->obd_name, exp->exp_client_uuid.uuid, exp,
2834 fed->fed_dirty, fed->fed_pending,fed->fed_grant);
2836 CDEBUG(D_CACHE, "%s: cli %s/%p dirty %ld pend %ld grant %ld\n",
2837 obd->obd_name, exp->exp_client_uuid.uuid, exp,
2838 fed->fed_dirty, fed->fed_pending,fed->fed_grant);
2839 tot_granted += fed->fed_grant + fed->fed_pending;
2840 tot_pending += fed->fed_pending;
2841 tot_dirty += fed->fed_dirty;
2843 fo_tot_granted = obd->u.filter.fo_tot_granted;
2844 fo_tot_pending = obd->u.filter.fo_tot_pending;
2845 fo_tot_dirty = obd->u.filter.fo_tot_dirty;
2846 spin_unlock(&obd->obd_dev_lock);
2847 spin_unlock(&obd->obd_osfs_lock);
2849 /* Do these assertions outside the spinlocks so we don't kill system */
2850 if (tot_granted != fo_tot_granted)
2851 CERROR("%s: tot_granted "LPU64" != fo_tot_granted "LPU64"\n",
2852 func, tot_granted, fo_tot_granted);
2853 if (tot_pending != fo_tot_pending)
2854 CERROR("%s: tot_pending "LPU64" != fo_tot_pending "LPU64"\n",
2855 func, tot_pending, fo_tot_pending);
2856 if (tot_dirty != fo_tot_dirty)
2857 CERROR("%s: tot_dirty "LPU64" != fo_tot_dirty "LPU64"\n",
2858 func, tot_dirty, fo_tot_dirty);
2859 if (tot_pending > tot_granted)
2860 CERROR("%s: tot_pending "LPU64" > tot_granted "LPU64"\n",
2861 func, tot_pending, tot_granted);
2862 if (tot_granted > maxsize)
2863 CERROR("%s: tot_granted "LPU64" > maxsize "LPU64"\n",
2864 func, tot_granted, maxsize);
2865 if (tot_dirty > maxsize)
2866 CERROR("%s: tot_dirty "LPU64" > maxsize "LPU64"\n",
2867 func, tot_dirty, maxsize);
2870 /* Remove this client from the grant accounting totals. We also remove
2871 * the export from the obd device under the osfs and dev locks to ensure
2872 * that the filter_grant_sanity_check() calculations are always valid.
2873 * The client should do something similar when it invalidates its import. */
2874 static void filter_grant_discard(struct obd_export *exp)
2876 struct obd_device *obd = exp->exp_obd;
2877 struct filter_obd *filter = &obd->u.filter;
2878 struct filter_export_data *fed = &exp->exp_filter_data;
2880 spin_lock(&obd->obd_osfs_lock);
2881 spin_lock(&obd->obd_dev_lock);
2882 list_del_init(&exp->exp_obd_chain);
2883 spin_unlock(&obd->obd_dev_lock);
2885 LASSERTF(filter->fo_tot_granted >= fed->fed_grant,
2886 "%s: tot_granted "LPU64" cli %s/%p fed_grant %ld\n",
2887 obd->obd_name, filter->fo_tot_granted,
2888 exp->exp_client_uuid.uuid, exp, fed->fed_grant);
2889 filter->fo_tot_granted -= fed->fed_grant;
2890 LASSERTF(filter->fo_tot_pending >= fed->fed_pending,
2891 "%s: tot_pending "LPU64" cli %s/%p fed_pending %ld\n",
2892 obd->obd_name, filter->fo_tot_pending,
2893 exp->exp_client_uuid.uuid, exp, fed->fed_pending);
2894 /* fo_tot_pending is handled in filter_grant_commit as bulk finishes */
2895 LASSERTF(filter->fo_tot_dirty >= fed->fed_dirty,
2896 "%s: tot_dirty "LPU64" cli %s/%p fed_dirty %ld\n",
2897 obd->obd_name, filter->fo_tot_dirty,
2898 exp->exp_client_uuid.uuid, exp, fed->fed_dirty);
2899 filter->fo_tot_dirty -= fed->fed_dirty;
2903 spin_unlock(&obd->obd_osfs_lock);
2906 static int filter_destroy_export(struct obd_export *exp)
2910 if (exp->exp_filter_data.fed_pending)
2911 CERROR("%s: cli %s/%p has %lu pending on destroyed export\n",
2912 exp->exp_obd->obd_name, exp->exp_client_uuid.uuid,
2913 exp, exp->exp_filter_data.fed_pending);
2915 /* Not ported yet the b1_6 quota functionality
2916 * lquota_clearinfo(filter_quota_interface_ref, exp, exp->exp_obd);
2919 target_destroy_export(exp);
2920 ldlm_destroy_export(exp);
2922 if (obd_uuid_equals(&exp->exp_client_uuid, &exp->exp_obd->obd_uuid))
2926 if (exp->exp_obd->obd_replayable)
2927 filter_client_free(exp);
2929 fsfilt_sync(exp->exp_obd, exp->exp_obd->u.obt.obt_sb);
2931 filter_grant_discard(exp);
2932 filter_fmd_cleanup(exp);
2934 if (!(exp->exp_flags & OBD_OPT_FORCE))
2935 filter_grant_sanity_check(exp->exp_obd, __FUNCTION__);
2940 static void filter_sync_llogs(struct obd_device *obd, struct obd_export *dexp)
2942 struct obd_llog_group *olg_min, *olg;
2943 struct filter_obd *filter;
2944 int worked = 0, group;
2945 struct llog_ctxt *ctxt;
2948 filter = &obd->u.filter;
2950 /* we can't sync log holding spinlock. also, we do not want to get
2951 * into livelock. so we do following: loop over MDS's exports in
2952 * group order and skip already synced llogs -bzzz */
2954 /* look for group with min. number, but > worked */
2957 spin_lock(&filter->fo_llog_list_lock);
2958 list_for_each_entry(olg, &filter->fo_llog_list, olg_list) {
2959 if (olg->olg_group <= worked) {
2960 /* this group is already synced */
2963 if (group < olg->olg_group) {
2964 /* we have group with smaller number to sync */
2967 /* store current minimal group */
2969 group = olg->olg_group;
2971 spin_unlock(&filter->fo_llog_list_lock);
2973 if (olg_min == NULL)
2976 worked = olg_min->olg_group;
2977 if (olg_min->olg_exp &&
2978 (dexp == olg_min->olg_exp || dexp == NULL)) {
2980 ctxt = llog_group_get_ctxt(olg_min,
2981 LLOG_MDS_OST_REPL_CTXT);
2982 LASSERT(ctxt != NULL);
2983 err = llog_sync(ctxt, olg_min->olg_exp);
2984 llog_ctxt_put(ctxt);
2986 CERROR("error flushing logs to MDS: rc %d\n",
2989 } while (olg_min != NULL);
2992 /* also incredibly similar to mds_disconnect */
2993 static int filter_disconnect(struct obd_export *exp)
2995 struct obd_device *obd = exp->exp_obd;
3000 class_export_get(exp);
3002 if (!(exp->exp_flags & OBD_OPT_FORCE))
3003 filter_grant_sanity_check(obd, __FUNCTION__);
3004 filter_grant_discard(exp);
3006 /* Disconnect early so that clients can't keep using export */
3007 rc = class_disconnect(exp);
3008 if (exp->exp_obd->obd_namespace != NULL)
3009 ldlm_cancel_locks_for_export(exp);
3011 fsfilt_sync(obd, obd->u.obt.obt_sb);
3013 lprocfs_exp_cleanup(exp);
3015 /* flush any remaining cancel messages out to the target */
3016 filter_sync_llogs(obd, exp);
3017 class_export_put(exp);
3021 /* reverse import is changed, sync all cancels */
3022 static void filter_revimp_update(struct obd_export *exp)
3027 class_export_get(exp);
3029 /* flush any remaining cancel messages out to the target */
3030 filter_sync_llogs(exp->exp_obd, exp);
3031 class_export_put(exp);
3035 static int filter_ping(struct obd_export *exp)
3037 filter_fmd_expire(exp);
3042 struct dentry *__filter_oa2dentry(struct obd_device *obd, struct obdo *oa,
3043 const char *what, int quiet)
3045 struct dentry *dchild = NULL;
3048 if (oa->o_valid & OBD_MD_FLGROUP)
3051 dchild = filter_fid2dentry(obd, NULL, group, oa->o_id);
3053 if (IS_ERR(dchild)) {
3054 CERROR("%s error looking up object: "LPU64":"LPU64"\n",
3055 what, group, oa->o_id);
3059 if (dchild->d_inode == NULL) {
3061 CERROR("%s: %s on non-existent object: "LPU64"\n",
3062 obd->obd_name, what, oa->o_id);
3064 RETURN(ERR_PTR(-ENOENT));
3070 static int filter_getattr(struct obd_export *exp, struct obd_info *oinfo)
3072 struct dentry *dentry = NULL;
3073 struct obd_device *obd;
3077 rc = filter_auth_capa(exp, NULL, oinfo_mdsno(oinfo),
3078 oinfo_capa(oinfo), CAPA_OPC_META_READ);
3082 obd = class_exp2obd(exp);
3084 CDEBUG(D_IOCTL, "invalid client export %p\n", exp);
3088 dentry = filter_oa2dentry(obd, oinfo->oi_oa);
3090 RETURN(PTR_ERR(dentry));
3092 /* Limit the valid bits in the return data to what we actually use */
3093 oinfo->oi_oa->o_valid = OBD_MD_FLID;
3094 obdo_from_inode(oinfo->oi_oa, dentry->d_inode, FILTER_VALID_FLAGS);
3100 /* this should be enabled/disabled in condition to enabled/disabled large
3101 * inodes (fast EAs) in backing store FS. */
3102 int filter_update_fidea(struct obd_export *exp, struct inode *inode,
3103 void *handle, struct obdo *oa)
3105 struct obd_device *obd = exp->exp_obd;
3109 if (oa->o_valid & OBD_MD_FLFID) {
3110 struct filter_fid ff;
3112 if (!(oa->o_valid & OBD_MD_FLGROUP))
3114 /* packing fid and converting it to LE for storing into EA.
3115 * Here ->o_stripe_idx should be filled by LOV and rest of
3116 * fields - by client. */
3117 ff.ff_fid.id = cpu_to_le64(oa->o_fid);
3118 ff.ff_fid.f_type = cpu_to_le32(oa->o_stripe_idx);
3119 ff.ff_fid.generation = cpu_to_le32(oa->o_generation);
3120 ff.ff_objid = cpu_to_le64(oa->o_id);
3121 ff.ff_group = cpu_to_le64(oa->o_gr);
3123 CDEBUG(D_INODE, "storing filter fid EA ("LPU64"/%u/%u"
3124 LPU64"/"LPU64")\n", oa->o_fid, oa->o_stripe_idx,
3125 oa->o_generation, oa->o_id, oa->o_gr);
3127 rc = fsfilt_set_md(obd, inode, handle, &ff, sizeof(ff), "fid");
3129 CERROR("store fid in object failed! rc: %d\n", rc);
3131 CDEBUG(D_HA, "OSS object without fid info!\n");
3137 /* this is called from filter_truncate() until we have filter_punch() */
3138 int filter_setattr_internal(struct obd_export *exp, struct dentry *dentry,
3139 struct obdo *oa, struct obd_trans_info *oti)
3141 unsigned int orig_ids[MAXQUOTAS] = {0, 0};
3142 struct llog_cookie *fcc = NULL;
3143 struct filter_obd *filter;
3144 int rc, err, locked = 0, sync = 0;
3145 unsigned int ia_valid;
3146 struct inode *inode;
3151 LASSERT(dentry != NULL);
3152 LASSERT(!IS_ERR(dentry));
3154 inode = dentry->d_inode;
3155 LASSERT(inode != NULL);
3157 filter = &exp->exp_obd->u.filter;
3158 iattr_from_obdo(&iattr, oa, oa->o_valid);
3159 ia_valid = iattr.ia_valid;
3161 if (oa->o_valid & OBD_MD_FLCOOKIE) {
3162 OBD_ALLOC(fcc, sizeof(*fcc));
3164 *fcc = oa->o_lcookie;
3167 if (ia_valid & ATTR_SIZE || ia_valid & (ATTR_UID | ATTR_GID)) {
3169 LOCK_INODE_MUTEX(inode);
3173 /* If the inode still has SUID+SGID bits set (see filter_precreate())
3174 * then we will accept the UID+GID sent by the client during write for
3175 * initializing the ownership of this inode. We only allow this to
3176 * happen once so clear these bits in setattr. In 2.6 kernels it is
3177 * possible to get ATTR_UID and ATTR_GID separately, so we only clear
3178 * the flags that are actually being set. */
3179 if (ia_valid & (ATTR_UID | ATTR_GID)) {
3180 CDEBUG(D_INODE, "update UID/GID to %lu/%lu\n",
3181 (unsigned long)oa->o_uid, (unsigned long)oa->o_gid);
3183 if ((inode->i_mode & S_ISUID) && (ia_valid & ATTR_UID)) {
3184 if (!(ia_valid & ATTR_MODE)) {
3185 iattr.ia_mode = inode->i_mode;
3186 iattr.ia_valid |= ATTR_MODE;
3188 iattr.ia_mode &= ~S_ISUID;
3190 if ((inode->i_mode & S_ISGID) && (ia_valid & ATTR_GID)) {
3191 if (!(iattr.ia_valid & ATTR_MODE)) {
3192 iattr.ia_mode = inode->i_mode;
3193 iattr.ia_valid |= ATTR_MODE;
3195 iattr.ia_mode &= ~S_ISGID;
3198 orig_ids[USRQUOTA] = inode->i_uid;
3199 orig_ids[GRPQUOTA] = inode->i_gid;
3200 handle = fsfilt_start_log(exp->exp_obd, inode,
3201 FSFILT_OP_SETATTR, oti, 1);
3203 GOTO(out_unlock, rc = PTR_ERR(handle));
3205 /* update inode EA only once when inode is suid bit marked. As
3206 * on 2.6.x UID and GID may be set separately, we check here
3207 * only one of them to avoid double setting. */
3208 if (inode->i_mode & S_ISUID)
3209 filter_update_fidea(exp, inode, handle, oa);
3211 handle = fsfilt_start(exp->exp_obd, inode,
3212 FSFILT_OP_SETATTR, oti);
3214 GOTO(out_unlock, rc = PTR_ERR(handle));
3216 if (oa->o_valid & OBD_MD_FLFLAGS) {
3217 rc = fsfilt_iocontrol(exp->exp_obd, inode, NULL,
3218 EXT3_IOC_SETFLAGS, (long)&oa->o_flags);
3220 rc = fsfilt_setattr(exp->exp_obd, dentry, handle, &iattr, 1);
3222 /* set cancel cookie callback function */
3223 sync = fsfilt_add_journal_cb(exp->exp_obd, 0, handle,
3224 filter_cancel_cookies_cb,
3228 if (OBD_FAIL_CHECK(OBD_FAIL_OST_SETATTR_CREDITS))
3229 fsfilt_extend(exp->exp_obd, inode, 0, handle);
3231 /* The truncate might have used up our transaction credits. Make
3232 * sure we have one left for the last_rcvd update. */
3233 err = fsfilt_extend(exp->exp_obd, inode, 1, handle);
3235 rc = filter_finish_transno(exp, oti, rc, sync);
3237 filter_cancel_cookies_cb(exp->exp_obd, 0, fcc, rc);
3241 err = fsfilt_commit(exp->exp_obd, inode, handle, 0);
3243 CERROR("error on commit, err = %d\n", err);
3251 /* truncate can leave dirty pages in the cache.
3252 * we'll take care of them in write path -bzzz */
3253 UNLOCK_INODE_MUTEX(inode);
3260 UNLOCK_INODE_MUTEX(inode);
3263 OBD_FREE(fcc, sizeof(*fcc));
3265 /* trigger quota release */
3266 if (ia_valid & (ATTR_SIZE | ATTR_UID | ATTR_GID)) {
3267 unsigned int cur_ids[MAXQUOTAS] = {oa->o_uid, oa->o_gid};
3268 int rc2 = lquota_adjust(filter_quota_interface_ref,
3269 exp->exp_obd, cur_ids,
3270 orig_ids, rc, FSFILT_OP_SETATTR);
3271 CDEBUG(rc2 ? D_ERROR : D_QUOTA,
3272 "filter adjust qunit. (rc:%d)\n", rc2);
3277 /* this is called from filter_truncate() until we have filter_punch() */
3278 int filter_setattr(struct obd_export *exp, struct obd_info *oinfo,
3279 struct obd_trans_info *oti)
3281 struct ldlm_res_id res_id;
3282 struct filter_mod_data *fmd;
3283 struct lvfs_run_ctxt saved;
3284 struct filter_obd *filter;
3285 struct ldlm_resource *res;
3286 struct dentry *dentry;
3290 osc_build_res_name(oinfo->oi_oa->o_id, oinfo->oi_oa->o_gr, &res_id);
3291 rc = filter_auth_capa(exp, NULL, oinfo_mdsno(oinfo),
3292 oinfo_capa(oinfo), CAPA_OPC_META_WRITE);
3296 /* This would be very bad - accidentally truncating a file when
3297 * changing the time or similar - bug 12203. */
3298 if (oinfo->oi_oa->o_valid & OBD_MD_FLSIZE &&
3299 oinfo->oi_policy.l_extent.end != OBD_OBJECT_EOF) {
3300 static char mdsinum[48];
3302 if (oinfo->oi_oa->o_valid & OBD_MD_FLFID)
3303 snprintf(mdsinum, sizeof(mdsinum) - 1,
3304 " of inode "LPU64"/%u", oinfo->oi_oa->o_fid,
3305 oinfo->oi_oa->o_generation);
3309 CERROR("%s: setattr from %s trying to truncate objid "LPU64
3311 exp->exp_obd->obd_name, obd_export_nid2str(exp),
3312 oinfo->oi_oa->o_id, mdsinum);
3316 dentry = __filter_oa2dentry(exp->exp_obd, oinfo->oi_oa,
3319 RETURN(PTR_ERR(dentry));
3321 filter = &exp->exp_obd->u.filter;
3322 push_ctxt(&saved, &exp->exp_obd->obd_lvfs_ctxt, NULL);
3325 if (oinfo->oi_oa->o_valid &
3326 (OBD_MD_FLMTIME | OBD_MD_FLATIME | OBD_MD_FLCTIME)) {
3327 fmd = filter_fmd_get(exp,oinfo->oi_oa->o_id,oinfo->oi_oa->o_gr);
3328 if (fmd && fmd->fmd_mactime_xid < oti->oti_xid)
3329 fmd->fmd_mactime_xid = oti->oti_xid;
3330 filter_fmd_put(exp, fmd);
3333 /* setting objects attributes (including owner/group) */
3334 rc = filter_setattr_internal(exp, dentry, oinfo->oi_oa, oti);
3336 GOTO(out_unlock, rc);
3338 res = ldlm_resource_get(exp->exp_obd->obd_namespace, NULL,
3339 &res_id, LDLM_EXTENT, 0);
3342 LDLM_RESOURCE_ADDREF(res);
3343 rc = ldlm_res_lvbo_update(res, NULL, 0, 0);
3344 LDLM_RESOURCE_DELREF(res);
3345 ldlm_resource_putref(res);
3348 oinfo->oi_oa->o_valid = OBD_MD_FLID;
3350 /* Quota release need uid/gid info */
3351 obdo_from_inode(oinfo->oi_oa, dentry->d_inode,
3352 FILTER_VALID_FLAGS | OBD_MD_FLUID | OBD_MD_FLGID);
3358 pop_ctxt(&saved, &exp->exp_obd->obd_lvfs_ctxt, NULL);
3362 /* XXX identical to osc_unpackmd */
3363 static int filter_unpackmd(struct obd_export *exp, struct lov_stripe_md **lsmp,
3364 struct lov_mds_md *lmm, int lmm_bytes)
3370 if (lmm_bytes < sizeof (*lmm)) {
3371 CERROR("lov_mds_md too small: %d, need %d\n",
3372 lmm_bytes, (int)sizeof(*lmm));
3375 /* XXX LOV_MAGIC etc check? */
3377 if (lmm->lmm_object_id == cpu_to_le64(0)) {
3378 CERROR("lov_mds_md: zero lmm_object_id\n");
3383 lsm_size = lov_stripe_md_size(1);
3387 if (*lsmp != NULL && lmm == NULL) {
3388 OBD_FREE((*lsmp)->lsm_oinfo[0], sizeof(struct lov_oinfo));
3389 OBD_FREE(*lsmp, lsm_size);
3394 if (*lsmp == NULL) {
3395 OBD_ALLOC(*lsmp, lsm_size);
3399 OBD_ALLOC((*lsmp)->lsm_oinfo[0], sizeof(struct lov_oinfo));
3400 if ((*lsmp)->lsm_oinfo[0] == NULL) {
3401 OBD_FREE(*lsmp, lsm_size);
3404 loi_init((*lsmp)->lsm_oinfo[0]);
3408 /* XXX zero *lsmp? */
3409 (*lsmp)->lsm_object_id = le64_to_cpu (lmm->lmm_object_id);
3410 LASSERT((*lsmp)->lsm_object_id);
3413 (*lsmp)->lsm_maxbytes = LUSTRE_STRIPE_MAXBYTES;
3418 /* caller must hold fo_create_locks[oa->o_gr] */
3419 static int filter_destroy_precreated(struct obd_export *exp, struct obdo *oa,
3420 struct filter_obd *filter)
3422 struct obdo doa; /* XXX obdo on stack */
3428 LASSERT(oa->o_gr != 0);
3429 LASSERT(oa->o_valid & OBD_MD_FLGROUP);
3430 LASSERT(down_trylock(&filter->fo_create_locks[oa->o_gr]) != 0);
3432 memset(&doa, 0, sizeof(doa));
3434 doa.o_valid |= OBD_MD_FLGROUP;
3435 doa.o_gr = oa->o_gr;
3436 doa.o_mode = S_IFREG;
3438 if (!test_bit(doa.o_gr, &filter->fo_destroys_in_progress)) {
3439 CERROR("%s:["LPU64"] destroys_in_progress already cleared\n",
3440 exp->exp_obd->obd_name, doa.o_gr);
3444 last = filter_last_id(filter, doa.o_gr);
3446 CWARN("%s: deleting orphan objects from "LPU64" to "LPU64"\n",
3447 exp->exp_obd->obd_name, oa->o_id + 1, last);
3449 for (id = last; id > oa->o_id; id--) {
3451 rc = filter_destroy(exp, &doa, NULL, NULL, NULL);
3452 if (rc && rc != -ENOENT) /* this is pretty fatal... */
3453 CEMERG("error destroying precreate objid "LPU64": %d\n",
3455 filter_set_last_id(filter, id - 1, doa.o_gr);
3456 /* update last_id on disk periodically so that if we restart
3457 * we don't need to re-scan all of the just-deleted objects. */
3458 if ((id & 511) == 0)
3459 filter_update_last_objid(exp->exp_obd, doa.o_gr, 0);
3462 CDEBUG(D_HA, "%s: after destroy: set last_objids["LPU64"] = "LPU64"\n",
3463 exp->exp_obd->obd_name, doa.o_gr, oa->o_id);
3465 rc = filter_update_last_objid(exp->exp_obd, doa.o_gr, 1);
3466 clear_bit(doa.o_gr, &filter->fo_destroys_in_progress);
3471 static int filter_precreate(struct obd_device *obd, struct obdo *oa,
3472 obd_gr group, int *num);
3473 /* returns a negative error or a nonnegative number of files to create */
3474 static int filter_handle_precreate(struct obd_export *exp, struct obdo *oa,
3475 obd_gr group, struct obd_trans_info *oti)
3477 struct obd_device *obd = exp->exp_obd;
3478 struct filter_obd *filter = &obd->u.filter;
3482 /* delete orphans request */
3483 if ((oa->o_valid & OBD_MD_FLFLAGS) && (oa->o_flags & OBD_FL_DELORPHAN)){
3484 if (oti->oti_conn_cnt < exp->exp_conn_cnt) {
3485 CERROR("%s: dropping old orphan cleanup request\n",
3489 /* This causes inflight precreates to abort and drop lock */
3490 set_bit(group, &filter->fo_destroys_in_progress);
3491 down(&filter->fo_create_locks[group]);
3492 if (!test_bit(group, &filter->fo_destroys_in_progress)) {
3493 CERROR("%s:["LPU64"] destroys_in_progress already cleared\n",
3494 exp->exp_obd->obd_name, group);
3495 up(&filter->fo_create_locks[group]);
3498 diff = oa->o_id - filter_last_id(filter, group);
3499 CDEBUG(D_HA, "filter_last_id() = "LPU64" -> diff = %d\n",
3500 filter_last_id(filter, group), diff);
3502 if (-diff > OST_MAX_PRECREATE) {
3503 CERROR("%s: ignoring bogus orphan destroy request: "
3504 "obdid "LPU64" last_id "LPU64"\n", obd->obd_name,
3505 oa->o_id, filter_last_id(filter, group));
3506 /* FIXME: should reset precreate_next_id on MDS */
3507 GOTO(out, rc = -EINVAL);
3510 rc = filter_destroy_precreated(exp, oa, filter);
3512 CERROR("%s: unable to write lastobjid, but "
3513 "orphans were deleted\n", obd->obd_name);
3516 /* XXX: Used by MDS for the first time! */
3517 clear_bit(group, &filter->fo_destroys_in_progress);
3520 down(&filter->fo_create_locks[group]);
3521 if (oti->oti_conn_cnt < exp->exp_conn_cnt) {
3522 CERROR("%s: dropping old precreate request\n",
3526 /* only precreate if group == 0 and o_id is specified */
3527 if (group < FILTER_GROUP_MDS0 || oa->o_id == 0)
3530 diff = oa->o_id - filter_last_id(filter, group);
3531 CDEBUG(D_RPCTRACE, "filter_last_id() = "LPU64" -> diff = %d\n",
3532 filter_last_id(filter, group), diff);
3534 LASSERTF(diff >= 0,"%s: "LPU64" - "LPU64" = %d\n",obd->obd_name,
3535 oa->o_id, filter_last_id(filter, group), diff);
3539 oa->o_id = filter_last_id(&obd->u.filter, group);
3540 rc = filter_precreate(obd, oa, group, &diff);
3541 oa->o_id = filter_last_id(&obd->u.filter, group);
3543 oa->o_valid = OBD_MD_FLID | OBD_MD_FLGROUP;
3546 /* else diff == 0 */
3549 up(&filter->fo_create_locks[group]);
3553 static int filter_statfs(struct obd_device *obd, struct obd_statfs *osfs,
3554 __u64 max_age, __u32 flags)
3556 struct filter_obd *filter = &obd->u.filter;
3557 int blockbits = obd->u.obt.obt_sb->s_blocksize_bits;
3561 /* at least try to account for cached pages. its still racey and
3562 * might be under-reporting if clients haven't announced their
3563 * caches with brw recently */
3564 spin_lock(&obd->obd_osfs_lock);
3565 rc = fsfilt_statfs(obd, obd->u.obt.obt_sb, max_age);
3566 memcpy(osfs, &obd->obd_osfs, sizeof(*osfs));
3567 spin_unlock(&obd->obd_osfs_lock);
3569 CDEBUG(D_SUPER | D_CACHE, "blocks cached "LPU64" granted "LPU64
3570 " pending "LPU64" free "LPU64" avail "LPU64"\n",
3571 filter->fo_tot_dirty, filter->fo_tot_granted,
3572 filter->fo_tot_pending,
3573 osfs->os_bfree << blockbits, osfs->os_bavail << blockbits);
3575 filter_grant_sanity_check(obd, __FUNCTION__);
3577 osfs->os_bavail -= min(osfs->os_bavail, GRANT_FOR_LLOG(obd) +
3578 ((filter->fo_tot_dirty + filter->fo_tot_pending +
3579 osfs->os_bsize - 1) >> blockbits));
3581 /* set EROFS to state field if FS is mounted as RDONLY. The goal is to
3582 * stop creating files on MDS if OST is not good shape to create
3584 osfs->os_state = (filter->fo_obt.obt_sb->s_flags & MS_RDONLY) ?
3589 static int filter_use_existing_obj(struct obd_device *obd,
3590 struct dentry *dchild, void **handle,
3593 struct inode *inode = dchild->d_inode;
3597 if ((inode->i_mode & (S_ISUID | S_ISGID)) == (S_ISUID|S_ISGID))
3600 *handle = fsfilt_start_log(obd, inode, FSFILT_OP_SETATTR, NULL, 1);
3601 if (IS_ERR(*handle))
3602 return PTR_ERR(*handle);
3604 iattr.ia_valid = ATTR_MODE;
3605 iattr.ia_mode = S_ISUID | S_ISGID |0666;
3606 rc = fsfilt_setattr(obd, dchild, *handle, &iattr, 1);
3614 /* We rely on the fact that only one thread will be creating files in a given
3615 * group at a time, which is why we don't need an atomic filter_get_new_id.
3616 * Even if we had that atomic function, the following race would exist:
3618 * thread 1: gets id x from filter_next_id
3619 * thread 2: gets id (x + 1) from filter_next_id
3620 * thread 2: creates object (x + 1)
3621 * thread 1: tries to create object x, gets -ENOSPC
3623 * Caller must hold fo_create_locks[group]
3625 static int filter_precreate(struct obd_device *obd, struct obdo *oa,
3626 obd_gr group, int *num)
3628 struct dentry *dchild = NULL, *dparent = NULL;
3629 struct filter_obd *filter;
3630 struct obd_statfs *osfs;
3631 int err = 0, rc = 0, recreate_obj = 0, i;
3632 cfs_time_t enough_time = cfs_time_shift(DISK_TIMEOUT/2);
3634 void *handle = NULL;
3637 filter = &obd->u.filter;
3639 LASSERT(down_trylock(&filter->fo_create_locks[group]) != 0);
3641 OBD_FAIL_TIMEOUT(OBD_FAIL_TGT_DELAY_PRECREATE, obd_timeout / 2);
3643 if ((oa->o_valid & OBD_MD_FLFLAGS) &&
3644 (oa->o_flags & OBD_FL_RECREATE_OBJS)) {
3647 OBD_ALLOC(osfs, sizeof(*osfs));
3650 rc = filter_statfs(obd, osfs, cfs_time_current_64() - HZ, 0);
3651 if (rc == 0 && osfs->os_bavail < (osfs->os_blocks >> 10)) {
3652 CDEBUG(D_RPCTRACE,"%s: not enough space for create "
3653 LPU64"\n", obd->obd_name, osfs->os_bavail <<
3654 filter->fo_vfsmnt->mnt_sb->s_blocksize_bits);
3658 OBD_FREE(osfs, sizeof(*osfs));
3663 CDEBUG(D_RPCTRACE, "%s: precreating %d objects in group "LPU64
3664 " at "LPU64"\n", obd->obd_name, *num, group, oa->o_id);
3666 for (i = 0; i < *num && err == 0; i++) {
3667 int cleanup_phase = 0;
3669 if (test_bit(group, &filter->fo_destroys_in_progress)) {
3670 CWARN("%s: create aborted by destroy\n",
3679 last_id = filter_last_id(filter, group);
3680 if (next_id > last_id) {
3681 CERROR("Error: Trying to recreate obj greater"
3682 "than last id "LPD64" > "LPD64"\n",
3684 GOTO(cleanup, rc = -EINVAL);
3687 next_id = filter_last_id(filter, group) + 1;
3689 dparent = filter_parent_lock(obd, group, next_id);
3690 if (IS_ERR(dparent))
3691 GOTO(cleanup, rc = PTR_ERR(dparent));
3692 cleanup_phase = 1; /* filter_parent_unlock(dparent) */
3694 dchild = filter_fid2dentry(obd, dparent, group, next_id);
3696 GOTO(cleanup, rc = PTR_ERR(dchild));
3697 cleanup_phase = 2; /* f_dput(dchild) */
3699 if (dchild->d_inode != NULL) {
3700 /* This would only happen if lastobjid was bad on disk*/
3701 /* Could also happen if recreating missing obj but it
3702 * already exists. */
3704 CERROR("%s: recreating existing object %.*s?\n",
3705 obd->obd_name, dchild->d_name.len,
3706 dchild->d_name.name);
3708 /* Use these existing objects if they are
3710 if (dchild->d_inode->i_size == 0) {
3711 rc = filter_use_existing_obj(obd,dchild,
3712 &handle, &cleanup_phase);
3719 CERROR("%s: Serious error: objid %.*s already "
3720 "exists; is this filesystem corrupt?\n",
3721 obd->obd_name, dchild->d_name.len,
3722 dchild->d_name.name);
3725 GOTO(cleanup, rc = -EEXIST);
3728 handle = fsfilt_start_log(obd, dparent->d_inode,
3729 FSFILT_OP_CREATE, NULL, 1);
3731 GOTO(cleanup, rc = PTR_ERR(handle));
3734 CDEBUG(D_INODE, "%s: filter_precreate(od->o_gr="LPU64
3735 ",od->o_id="LPU64")\n", obd->obd_name, group,
3738 /* We mark object SUID+SGID to flag it for accepting UID+GID
3739 * from client on first write. Currently the permission bits
3740 * on the OST are never used, so this is OK. */
3741 rc = ll_vfs_create(dparent->d_inode, dchild,
3742 S_IFREG | S_ISUID | S_ISGID | 0666, NULL);
3744 CERROR("create failed rc = %d\n", rc);
3749 if (!recreate_obj) {
3750 filter_set_last_id(filter, next_id, group);
3751 err = filter_update_last_objid(obd, group, 0);
3753 CERROR("unable to write lastobjid "
3754 "but file created\n");
3758 switch(cleanup_phase) {
3760 err = fsfilt_commit(obd, dparent->d_inode, handle, 0);
3762 CERROR("error on commit, err = %d\n", err);
3769 filter_parent_unlock(dparent);
3776 if (time_after(jiffies, enough_time)) {
3778 "%s: precreate slow - want %d got %d \n",
3779 obd->obd_name, *num, i);
3786 "%s: created %d objects for group "LPU64": "LPU64" rc %d\n",
3787 obd->obd_name, i, group, filter->fo_last_objids[group], rc);
3792 static int filter_create(struct obd_export *exp, struct obdo *oa,
3793 struct lov_stripe_md **ea, struct obd_trans_info *oti)
3795 struct obd_device *obd = exp->exp_obd;
3796 struct filter_export_data *fed;
3797 struct filter_obd *filter;
3798 struct lvfs_run_ctxt saved;
3799 struct lov_stripe_md *lsm = NULL;
3800 int rc = 0, diff, group = oa->o_gr;
3803 CDEBUG(D_INODE, "%s: filter_create(od->o_gr="LPU64",od->o_id="
3804 LPU64")\n", obd->obd_name, oa->o_gr, oa->o_id);
3806 if (!(oa->o_valid & OBD_MD_FLGROUP) || group == 0) {
3807 CERROR("!!! nid %s sent invalid object group %d\n",
3808 obd_export_nid2str(exp), group);
3812 fed = &exp->exp_filter_data;
3813 filter = &obd->u.filter;
3815 if (fed->fed_group != group) {
3816 CERROR("!!! this export (nid %s) used object group %d "
3817 "earlier; now it's trying to use group %d! This could "
3818 "be a bug in the MDS. Please report to "
3819 "http://bugzilla.lustre.org/\n",
3820 obd_export_nid2str(exp), fed->fed_group, group);
3827 rc = obd_alloc_memmd(exp, &lsm);
3834 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
3836 if ((oa->o_valid & OBD_MD_FLFLAGS) &&
3837 (oa->o_flags & OBD_FL_RECREATE_OBJS)) {
3838 if (oa->o_id > filter_last_id(filter, oa->o_gr)) {
3839 CERROR("recreate objid "LPU64" > last id "LPU64"\n",
3840 oa->o_id, filter_last_id(filter,
3845 down(&filter->fo_create_locks[oa->o_gr]);
3846 rc = filter_precreate(obd, oa, oa->o_gr, &diff);
3847 up(&filter->fo_create_locks[oa->o_gr]);
3850 rc = filter_handle_precreate(exp, oa, oa->o_gr, oti);
3853 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
3854 if (rc && ea != NULL && *ea != lsm) {
3855 obd_free_memmd(exp, &lsm);
3856 } else if (rc == 0 && ea != NULL) {
3857 /* XXX LOV STACKING: the lsm that is passed to us from
3858 * LOV does not have valid lsm_oinfo data structs, so
3859 * don't go touching that. This needs to be fixed in a
3861 lsm->lsm_object_id = oa->o_id;
3868 int filter_destroy(struct obd_export *exp, struct obdo *oa,
3869 struct lov_stripe_md *md, struct obd_trans_info *oti,
3870 struct obd_export *md_exp)
3872 unsigned int qcids[MAXQUOTAS] = {0, 0};
3873 struct obd_device *obd;
3874 struct filter_obd *filter;
3875 struct dentry *dchild = NULL, *dparent = NULL;
3876 struct lvfs_run_ctxt saved;
3877 void *handle = NULL;
3878 struct llog_cookie *fcc = NULL;
3879 int rc, rc2, cleanup_phase = 0, sync = 0;
3883 LASSERT(oa->o_valid & OBD_MD_FLGROUP);
3886 filter = &obd->u.filter;
3888 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
3891 CDEBUG(D_INODE, "%s: filter_destroy(od->o_gr="LPU64",od->o_id="
3892 LPU64")\n", obd->obd_name, oa->o_gr, oa->o_id);
3894 dchild = filter_fid2dentry(obd, NULL, oa->o_gr, oa->o_id);
3896 GOTO(cleanup, rc = PTR_ERR(dchild));
3899 if (dchild->d_inode == NULL) {
3900 CDEBUG(D_INODE, "destroying non-existent object "LPU64"\n",
3902 /* If object already gone, cancel cookie right now */
3903 if (oa->o_valid & OBD_MD_FLCOOKIE) {
3904 struct llog_ctxt *ctxt;
3905 struct obd_llog_group *olg;
3906 fcc = &oa->o_lcookie;
3907 olg = filter_find_olg(obd, oa->o_gr);
3909 CERROR(" %s: can not find olg of group %d\n",
3910 obd->obd_name, (int)oa->o_gr);
3911 GOTO(cleanup, rc = PTR_ERR(olg));
3913 llog_group_set_export(olg, exp);
3915 ctxt = llog_group_get_ctxt(olg, fcc->lgc_subsys + 1);
3916 llog_cancel(ctxt, NULL, 1, fcc, 0);
3917 llog_ctxt_put(ctxt);
3918 fcc = NULL; /* we didn't allocate fcc, don't free it */
3920 GOTO(cleanup, rc = -ENOENT);
3923 filter_prepare_destroy(obd, oa->o_id, oa->o_gr);
3925 /* Our MDC connection is established by the MDS to us */
3926 if (oa->o_valid & OBD_MD_FLCOOKIE) {
3927 OBD_ALLOC(fcc, sizeof(*fcc));
3929 *fcc = oa->o_lcookie;
3931 DQUOT_INIT(dchild->d_inode);
3933 /* we're gonna truncate it first in order to avoid possible deadlock:
3935 * open trasaction open transaction
3936 * down(i_zombie) down(i_zombie)
3937 * restart transaction
3938 * (see BUG 4180) -bzzz
3940 LOCK_INODE_MUTEX(dchild->d_inode);
3941 handle = fsfilt_start_log(obd, dchild->d_inode, FSFILT_OP_SETATTR,
3943 if (IS_ERR(handle)) {
3944 UNLOCK_INODE_MUTEX(dchild->d_inode);
3945 GOTO(cleanup, rc = PTR_ERR(handle));
3948 iattr.ia_valid = ATTR_SIZE;
3950 rc = fsfilt_setattr(obd, dchild, handle, &iattr, 1);
3951 rc2 = fsfilt_commit(obd, dchild->d_inode, handle, 0);
3952 UNLOCK_INODE_MUTEX(dchild->d_inode);
3956 GOTO(cleanup, rc = rc2);
3958 /* We don't actually need to lock the parent until we are unlinking
3959 * here, and not while truncating above. That avoids holding the
3960 * parent lock for a long time during truncate, which can block other
3961 * threads from doing anything to objects in that directory. bug 7171 */
3962 dparent = filter_parent_lock(obd, oa->o_gr, oa->o_id);
3963 if (IS_ERR(dparent))
3964 GOTO(cleanup, rc = PTR_ERR(dparent));
3965 cleanup_phase = 3; /* filter_parent_unlock */
3967 LOCK_INODE_MUTEX(dchild->d_inode);
3968 handle = fsfilt_start_log(obd, dparent->d_inode,FSFILT_OP_UNLINK,oti,1);
3969 if (IS_ERR(handle)) {
3970 UNLOCK_INODE_MUTEX(dchild->d_inode);
3971 GOTO(cleanup, rc = PTR_ERR(handle));
3973 cleanup_phase = 4; /* fsfilt_commit */
3975 /* Quota release need uid/gid of inode */
3976 obdo_from_inode(oa, dchild->d_inode, OBD_MD_FLUID|OBD_MD_FLGID);
3978 filter_fmd_drop(exp, oa->o_id, oa->o_gr);
3980 /* this drops dchild->d_inode->i_mutex unconditionally */
3981 rc = filter_destroy_internal(obd, oa->o_id, oa->o_gr, dparent, dchild);
3985 switch(cleanup_phase) {
3988 sync = fsfilt_add_journal_cb(obd, 0, oti ?
3989 oti->oti_handle : handle,
3990 filter_cancel_cookies_cb,
3992 /* If add_journal_cb failed, then filter_finish_transno
3993 * will commit the handle and we will do a sync
3994 * on commit. then we call callback directly to free
3997 rc = filter_finish_transno(exp, oti, rc, sync);
3999 filter_cancel_cookies_cb(obd, 0, fcc, rc);
4002 rc2 = fsfilt_commit(obd, dparent->d_inode, handle, 0);
4004 CERROR("error on commit, err = %d\n", rc2);
4011 filter_parent_unlock(dparent);
4015 OBD_FREE(fcc, sizeof(*fcc));
4017 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
4020 CERROR("invalid cleanup_phase %d\n", cleanup_phase);
4024 /* trigger quota release */
4025 qcids[USRQUOTA] = oa->o_uid;
4026 qcids[GRPQUOTA] = oa->o_gid;
4027 rc2 = lquota_adjust(filter_quota_interface_ref, obd, qcids, NULL, rc,
4031 CDEBUG(D_QUOTA, "filter adjust qunit! (rc:%d)\n", rc2);
4035 /* NB start and end are used for punch, but not truncate */
4036 static int filter_truncate(struct obd_export *exp, struct obd_info *oinfo,
4037 struct obd_trans_info *oti,
4038 struct ptlrpc_request_set *rqset)
4043 if (oinfo->oi_policy.l_extent.end != OBD_OBJECT_EOF) {
4044 CERROR("PUNCH not supported, only truncate: end = "LPX64"\n",
4045 oinfo->oi_policy.l_extent.end);
4049 CDEBUG(D_INODE, "calling truncate for object "LPU64", valid = "LPX64
4050 ", o_size = "LPD64"\n", oinfo->oi_oa->o_id,
4051 oinfo->oi_oa->o_valid, oinfo->oi_policy.l_extent.start);
4053 rc = filter_auth_capa(exp, NULL, oinfo_mdsno(oinfo),
4054 oinfo_capa(oinfo), CAPA_OPC_OSS_TRUNC);
4058 oinfo->oi_oa->o_size = oinfo->oi_policy.l_extent.start;
4059 rc = filter_setattr(exp, oinfo, oti);
4063 static int filter_sync(struct obd_export *exp, struct obdo *oa,
4064 struct lov_stripe_md *lsm, obd_off start, obd_off end,
4067 struct lvfs_run_ctxt saved;
4068 struct filter_obd *filter;
4069 struct dentry *dentry;
4073 rc = filter_auth_capa(exp, NULL, obdo_mdsno(oa),
4074 (struct lustre_capa *)capa, CAPA_OPC_OSS_WRITE);
4078 filter = &exp->exp_obd->u.filter;
4080 /* an objid of zero is taken to mean "sync whole filesystem" */
4081 if (!oa || !(oa->o_valid & OBD_MD_FLID)) {
4082 rc = fsfilt_sync(exp->exp_obd, filter->fo_obt.obt_sb);
4083 /* flush any remaining cancel messages out to the target */
4084 filter_sync_llogs(exp->exp_obd, exp);
4088 dentry = filter_oa2dentry(exp->exp_obd, oa);
4090 RETURN(PTR_ERR(dentry));
4092 push_ctxt(&saved, &exp->exp_obd->obd_lvfs_ctxt, NULL);
4094 LOCK_INODE_MUTEX(dentry->d_inode);
4096 rc = filemap_fdatawrite(dentry->d_inode->i_mapping);
4098 /* just any file to grab fsync method - "file" arg unused */
4099 struct file *file = filter->fo_rcvd_filp;
4101 if (file->f_op && file->f_op->fsync)
4102 rc = file->f_op->fsync(NULL, dentry, 1);
4104 rc2 = filemap_fdatawait(dentry->d_inode->i_mapping);
4108 UNLOCK_INODE_MUTEX(dentry->d_inode);
4110 oa->o_valid = OBD_MD_FLID;
4111 obdo_from_inode(oa, dentry->d_inode, FILTER_VALID_FLAGS);
4113 pop_ctxt(&saved, &exp->exp_obd->obd_lvfs_ctxt, NULL);
4119 static int filter_get_info(struct obd_export *exp, __u32 keylen,
4120 void *key, __u32 *vallen, void *val,
4121 struct lov_stripe_md *lsm)
4123 struct obd_device *obd;
4126 obd = class_exp2obd(exp);
4128 CDEBUG(D_IOCTL, "invalid client export %p\n", exp);
4132 if (KEY_IS(KEY_BLOCKSIZE)) {
4133 __u32 *blocksize = val;
4135 if (*vallen < sizeof(*blocksize))
4137 *blocksize = obd->u.obt.obt_sb->s_blocksize;
4139 *vallen = sizeof(*blocksize);
4143 if (KEY_IS(KEY_BLOCKSIZE_BITS)) {
4144 __u32 *blocksize_bits = val;
4145 if (blocksize_bits) {
4146 if (*vallen < sizeof(*blocksize_bits))
4148 *blocksize_bits = obd->u.obt.obt_sb->s_blocksize_bits;
4150 *vallen = sizeof(*blocksize_bits);
4154 if (KEY_IS(KEY_LAST_ID)) {
4155 obd_id *last_id = val;
4156 /* FIXME: object groups */
4158 if (*vallen < sizeof(*last_id))
4160 *last_id = filter_last_id(&obd->u.filter,
4161 exp->exp_filter_data.fed_group);
4163 *vallen = sizeof(*last_id);
4167 if (KEY_IS(KEY_FIEMAP)) {
4168 struct ll_fiemap_info_key *fm_key = key;
4169 struct dentry *dentry;
4170 struct ll_user_fiemap *fiemap = val;
4171 struct lvfs_run_ctxt saved;
4174 if (fiemap == NULL) {
4175 *vallen = fiemap_count_to_size(
4176 fm_key->fiemap.fm_extent_count);
4180 dentry = __filter_oa2dentry(exp->exp_obd, &fm_key->oa,
4183 RETURN(PTR_ERR(dentry));
4185 memcpy(fiemap, &fm_key->fiemap, sizeof(*fiemap));
4186 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
4187 rc = fsfilt_iocontrol(obd, dentry->d_inode, NULL,
4188 EXT3_IOC_FIEMAP, (long)fiemap);
4193 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
4199 CDEBUG(D_IOCTL, "invalid key\n");
4203 static int filter_set_info_async(struct obd_export *exp, __u32 keylen,
4204 void *key, __u32 vallen, void *val,
4205 struct ptlrpc_request_set *set)
4207 struct obd_device *obd;
4208 struct obd_llog_group *olg;
4209 struct llog_ctxt *ctxt;
4215 CDEBUG(D_IOCTL, "invalid export %p\n", exp);
4219 if (KEY_IS(KEY_CAPA_KEY)) {
4220 rc = filter_update_capa_key(obd, (struct lustre_capa_key *)val);
4222 CERROR("filter update capability key failed: %d\n", rc);
4226 if (KEY_IS(KEY_REVIMP_UPD)) {
4227 filter_revimp_update(exp);
4231 if (!KEY_IS(KEY_MDS_CONN))
4234 LCONSOLE_WARN("%s: received MDS connection from %s\n", obd->obd_name,
4235 obd_export_nid2str(exp));
4236 obd->u.filter.fo_mdc_conn.cookie = exp->exp_handle.h_cookie;
4238 /* setup llog imports */
4239 LASSERT(val != NULL);
4240 group = (int)(*(__u32 *)val);
4241 LASSERT(group >= FILTER_GROUP_MDS0);
4243 olg = filter_find_create_olg(obd, group);
4245 RETURN(PTR_ERR(olg));
4247 llog_group_set_export(olg, exp);
4249 ctxt = llog_group_get_ctxt(olg, LLOG_MDS_OST_REPL_CTXT);
4250 LASSERTF(ctxt != NULL, "ctxt is null\n");
4252 rc = llog_receptor_accept(ctxt, exp->exp_imp_reverse);
4253 llog_ctxt_put(ctxt);
4255 lquota_setinfo(filter_quota_interface_ref, exp, obd);
4260 int filter_iocontrol(unsigned int cmd, struct obd_export *exp,
4261 int len, void *karg, void *uarg)
4263 struct obd_device *obd = exp->exp_obd;
4264 struct obd_ioctl_data *data = karg;
4268 case OBD_IOC_ABORT_RECOVERY: {
4269 CERROR("aborting recovery for device %s\n", obd->obd_name);
4270 target_stop_recovery_thread(obd);
4274 case OBD_IOC_SYNC: {
4275 CDEBUG(D_RPCTRACE, "syncing ost %s\n", obd->obd_name);
4276 rc = fsfilt_sync(obd, obd->u.obt.obt_sb);
4280 case OBD_IOC_SET_READONLY: {
4282 struct super_block *sb = obd->u.obt.obt_sb;
4283 struct inode *inode = sb->s_root->d_inode;
4284 BDEVNAME_DECLARE_STORAGE(tmp);
4285 CERROR("*** setting device %s read-only ***\n",
4286 ll_bdevname(sb, tmp));
4288 handle = fsfilt_start(obd, inode, FSFILT_OP_MKNOD, NULL);
4289 if (!IS_ERR(handle))
4290 rc = fsfilt_commit(obd, inode, handle, 1);
4292 CDEBUG(D_HA, "syncing ost %s\n", obd->obd_name);
4293 rc = fsfilt_sync(obd, obd->u.obt.obt_sb);
4295 lvfs_set_rdonly(obd, obd->u.obt.obt_sb);
4299 case OBD_IOC_CATLOGLIST: {
4300 rc = llog_catalog_list(obd, 1, data);
4304 case OBD_IOC_LLOG_CANCEL:
4305 case OBD_IOC_LLOG_REMOVE:
4306 case OBD_IOC_LLOG_INFO:
4307 case OBD_IOC_LLOG_PRINT: {
4308 /* FIXME to be finished */
4309 RETURN(-EOPNOTSUPP);
4311 struct llog_ctxt *ctxt = NULL;
4313 push_ctxt(&saved, &ctxt->loc_exp->exp_obd->obd_lvfs_ctxt, NULL);
4314 rc = llog_ioctl(ctxt, cmd, data);
4315 pop_ctxt(&saved, &ctxt->loc_exp->exp_obd->obd_lvfs_ctxt, NULL);
4328 static int filter_health_check(struct obd_device *obd)
4330 #ifdef USE_HEALTH_CHECK_WRITE
4331 struct filter_obd *filter = &obd->u.filter;
4336 * health_check to return 0 on healthy
4337 * and 1 on unhealthy.
4339 if (obd->u.obt.obt_sb->s_flags & MS_RDONLY)
4342 #ifdef USE_HEALTH_CHECK_WRITE
4343 LASSERT(filter->fo_health_check_filp != NULL);
4344 rc |= !!lvfs_check_io_health(obd, filter->fo_health_check_filp);
4349 static struct dentry *filter_lvfs_fid2dentry(__u64 id, __u32 gen, __u64 gr,
4352 return filter_fid2dentry(data, NULL, gr, id);
4355 static int filter_process_config(struct obd_device *obd, obd_count len,
4358 struct lustre_cfg *lcfg = buf;
4359 struct lprocfs_static_vars lvars;
4362 switch (lcfg->lcfg_command) {
4363 case LCFG_SPTLRPC_CONF: {
4364 struct filter_obd *filter = &obd->u.filter;
4365 struct sptlrpc_conf_log *log;
4366 struct sptlrpc_rule_set tmp_rset;
4368 log = sptlrpc_conf_log_extract(lcfg);
4374 sptlrpc_rule_set_init(&tmp_rset);
4376 rc = sptlrpc_rule_set_from_log(&tmp_rset, log);
4378 CERROR("obd %s: failed get sptlrpc rules: %d\n",
4383 write_lock(&filter->fo_sptlrpc_lock);
4384 sptlrpc_rule_set_free(&filter->fo_sptlrpc_rset);
4385 filter->fo_sptlrpc_rset = tmp_rset;
4386 write_unlock(&filter->fo_sptlrpc_lock);
4388 sptlrpc_target_update_exp_flavor(obd, &tmp_rset);
4392 lprocfs_filter_init_vars(&lvars);
4394 rc = class_process_proc_param(PARAM_OST, lvars.obd_vars,
4402 static struct lvfs_callback_ops filter_lvfs_ops = {
4403 l_fid2dentry: filter_lvfs_fid2dentry,
4406 static struct obd_ops filter_obd_ops = {
4407 .o_owner = THIS_MODULE,
4408 .o_get_info = filter_get_info,
4409 .o_set_info_async = filter_set_info_async,
4410 .o_setup = filter_setup,
4411 .o_precleanup = filter_precleanup,
4412 .o_cleanup = filter_cleanup,
4413 .o_connect = filter_connect,
4414 .o_reconnect = filter_reconnect,
4415 .o_disconnect = filter_disconnect,
4416 .o_ping = filter_ping,
4417 .o_init_export = filter_init_export,
4418 .o_destroy_export = filter_destroy_export,
4419 .o_statfs = filter_statfs,
4420 .o_getattr = filter_getattr,
4421 .o_unpackmd = filter_unpackmd,
4422 .o_create = filter_create,
4423 .o_setattr = filter_setattr,
4424 .o_destroy = filter_destroy,
4425 .o_brw = filter_brw,
4426 .o_punch = filter_truncate,
4427 .o_sync = filter_sync,
4428 .o_preprw = filter_preprw,
4429 .o_commitrw = filter_commitrw,
4430 .o_llog_init = filter_llog_init,
4431 .o_llog_connect = filter_llog_connect,
4432 .o_llog_finish = filter_llog_finish,
4433 .o_iocontrol = filter_iocontrol,
4434 .o_health_check = filter_health_check,
4435 .o_process_config = filter_process_config,
4438 quota_interface_t *filter_quota_interface_ref;
4439 extern quota_interface_t filter_quota_interface;
4441 static int __init obdfilter_init(void)
4443 struct lprocfs_static_vars lvars;
4446 lprocfs_filter_init_vars(&lvars);
4448 request_module("lquota");
4449 OBD_ALLOC(obdfilter_created_scratchpad,
4450 OBDFILTER_CREATED_SCRATCHPAD_ENTRIES *
4451 sizeof(*obdfilter_created_scratchpad));
4452 if (obdfilter_created_scratchpad == NULL)
4455 ll_fmd_cachep = cfs_mem_cache_create("ll_fmd_cache",
4456 sizeof(struct filter_mod_data),
4459 GOTO(out, rc = -ENOMEM);
4461 filter_quota_interface_ref = PORTAL_SYMBOL_GET(filter_quota_interface);
4462 init_obd_quota_ops(filter_quota_interface_ref, &filter_obd_ops);
4464 rc = class_register_type(&filter_obd_ops, NULL, lvars.module_vars,
4465 LUSTRE_OST_NAME, NULL);
4469 err = cfs_mem_cache_destroy(ll_fmd_cachep);
4470 LASSERTF(err == 0, "Cannot destroy ll_fmd_cachep: rc %d\n",err);
4471 ll_fmd_cachep = NULL;
4473 if (filter_quota_interface_ref)
4474 PORTAL_SYMBOL_PUT(filter_quota_interface);
4476 OBD_FREE(obdfilter_created_scratchpad,
4477 OBDFILTER_CREATED_SCRATCHPAD_ENTRIES *
4478 sizeof(*obdfilter_created_scratchpad));
4484 static void __exit obdfilter_exit(void)
4486 if (filter_quota_interface_ref)
4487 PORTAL_SYMBOL_PUT(filter_quota_interface);
4489 if (ll_fmd_cachep) {
4490 int rc = cfs_mem_cache_destroy(ll_fmd_cachep);
4491 LASSERTF(rc == 0, "Cannot destroy ll_fmd_cachep: rc %d\n", rc);
4492 ll_fmd_cachep = NULL;
4495 class_unregister_type(LUSTRE_OST_NAME);
4496 OBD_FREE(obdfilter_created_scratchpad,
4497 OBDFILTER_CREATED_SCRATCHPAD_ENTRIES *
4498 sizeof(*obdfilter_created_scratchpad));
4501 MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
4502 MODULE_DESCRIPTION("Lustre Filtering OBD driver");
4503 MODULE_LICENSE("GPL");
4505 module_init(obdfilter_init);
4506 module_exit(obdfilter_exit);