1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
6 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 only,
10 * as published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License version 2 for more details (a copy is included
16 * in the LICENSE file that accompanied this code).
18 * You should have received a copy of the GNU General Public License
19 * version 2 along with this program; If not, see
20 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
22 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
23 * CA 95054 USA or visit www.sun.com if you need additional information or
29 * Copyright 2008 Sun Microsystems, Inc. All rights reserved
30 * Use is subject to license terms.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
36 * lustre/obdfilter/filter.c
38 * Author: Peter Braam <braam@clusterfs.com>
39 * Author: Andreas Dilger <adilger@clusterfs.com>
43 * Invariant: Get O/R i_mutex for lookup, if needed, before any journal ops
44 * (which need to get journal_lock, may block if journal full).
46 * Invariant: Call filter_start_transno() before any journal ops to avoid the
47 * same deadlock problem. We can (and want) to get rid of the
48 * transno sem in favour of the dir/inode i_mutex to avoid single
49 * threaded operation on the OST.
52 #define DEBUG_SUBSYSTEM S_FILTER
54 #ifndef AUTOCONF_INCLUDED
55 #include <linux/config.h>
57 #include <linux/module.h>
59 #include <linux/dcache.h>
60 #include <linux/init.h>
61 #include <linux/version.h>
62 #include <linux/sched.h>
63 #include <linux/mount.h>
64 #include <linux/buffer_head.h>
66 #include <obd_cksum.h>
67 #include <obd_class.h>
69 #include <lustre_dlm.h>
70 #include <lustre_fsfilt.h>
71 #include <lprocfs_status.h>
72 #include <lustre_log.h>
73 #include <libcfs/list.h>
74 #include <lustre_disk.h>
75 #include <lustre_quota.h>
76 #include <linux/slab.h>
77 #include <lustre_param.h>
78 #include <lustre/ll_fiemap.h>
80 #include "filter_internal.h"
82 /* Group 0 is no longer a legal group, to catch uninitialized IDs */
83 #define FILTER_MIN_GROUPS FILTER_GROUP_MDS0
84 static struct lvfs_callback_ops filter_lvfs_ops;
85 cfs_mem_cache_t *ll_fmd_cachep;
87 static void filter_commit_cb(struct obd_device *obd, __u64 transno,
88 void *cb_data, int error)
90 obd_transno_commit_cb(obd, transno, error);
93 /* Assumes caller has already pushed us into the kernel context. */
94 int filter_finish_transno(struct obd_export *exp, struct obd_trans_info *oti,
95 int rc, int force_sync)
97 struct filter_obd *filter = &exp->exp_obd->u.filter;
98 struct filter_export_data *fed = &exp->exp_filter_data;
99 struct lsd_client_data *lcd = fed->fed_lcd;
102 int err, log_pri = D_RPCTRACE;
104 /* Propagate error code. */
108 if (!exp->exp_obd->obd_replayable || oti == NULL)
111 /* we don't allocate new transnos for replayed requests */
112 if (oti->oti_transno == 0) {
113 spin_lock(&filter->fo_translock);
114 last_rcvd = le64_to_cpu(filter->fo_fsd->lsd_last_transno) + 1;
115 filter->fo_fsd->lsd_last_transno = cpu_to_le64(last_rcvd);
116 spin_unlock(&filter->fo_translock);
117 oti->oti_transno = last_rcvd;
119 spin_lock(&filter->fo_translock);
120 last_rcvd = oti->oti_transno;
121 if (last_rcvd > le64_to_cpu(filter->fo_fsd->lsd_last_transno))
122 filter->fo_fsd->lsd_last_transno =
123 cpu_to_le64(last_rcvd);
124 spin_unlock(&filter->fo_translock);
126 lcd->lcd_last_transno = cpu_to_le64(last_rcvd);
128 /* could get xid from oti, if it's ever needed */
129 lcd->lcd_last_xid = 0;
131 off = fed->fed_lr_off;
133 CERROR("%s: client idx %d is %lld\n", exp->exp_obd->obd_name,
134 fed->fed_lr_idx, fed->fed_lr_off);
138 force_sync = fsfilt_add_journal_cb(exp->exp_obd,
144 err = fsfilt_write_record(exp->exp_obd, filter->fo_rcvd_filp,
145 lcd, sizeof(*lcd), &off,
146 force_sync | exp->exp_need_sync);
148 filter_commit_cb(exp->exp_obd, last_rcvd, NULL, err);
156 CDEBUG(log_pri, "wrote trans "LPU64" for client %s at #%d: err = %d\n",
157 last_rcvd, lcd->lcd_uuid, fed->fed_lr_idx, err);
162 void f_dput(struct dentry *dentry)
164 /* Can't go inside filter_ddelete because it can block */
165 CDEBUG(D_INODE, "putting %s: %p, count = %d\n",
166 dentry->d_name.name, dentry, atomic_read(&dentry->d_count) - 1);
167 LASSERT(atomic_read(&dentry->d_count) > 0);
172 static void init_brw_stats(struct brw_stats *brw_stats)
175 for (i = 0; i < BRW_LAST; i++)
176 spin_lock_init(&brw_stats->hist[i].oh_lock);
179 static int lprocfs_init_rw_stats(struct obd_device *obd,
180 struct lprocfs_stats **stats)
184 num_stats = (sizeof(*obd->obd_type->typ_dt_ops) / sizeof(void *)) +
185 LPROC_FILTER_LAST - 1;
186 *stats = lprocfs_alloc_stats(num_stats, 0);
190 lprocfs_init_ops_stats(LPROC_FILTER_LAST, *stats);
191 lprocfs_counter_init(*stats, LPROC_FILTER_READ_BYTES,
192 LPROCFS_CNTR_AVGMINMAX, "read_bytes", "bytes");
193 lprocfs_counter_init(*stats, LPROC_FILTER_WRITE_BYTES,
194 LPROCFS_CNTR_AVGMINMAX, "write_bytes", "bytes");
199 /* brw_stats are 2128, ops are 3916, ldlm are 204, so 6248 bytes per client,
200 plus the procfs overhead :( */
201 static int filter_export_stats_init(struct obd_device *obd,
202 struct obd_export *exp,
205 struct filter_export_data *fed = &exp->exp_filter_data;
209 init_brw_stats(&fed->fed_brw_stats);
211 if (obd_uuid_equals(&exp->exp_client_uuid, &obd->obd_uuid))
212 /* Self-export gets no proc entry */
215 rc = lprocfs_exp_setup(exp, client_nid, &newnid);
220 struct nid_stat *tmp = exp->exp_nid_stats;
221 LASSERT(tmp != NULL);
223 OBD_ALLOC(tmp->nid_brw_stats, sizeof(struct brw_stats));
224 if (tmp->nid_brw_stats == NULL)
227 init_brw_stats(tmp->nid_brw_stats);
228 rc = lprocfs_seq_create(exp->exp_nid_stats->nid_proc, "brw_stats",
229 0644, &filter_per_nid_stats_fops,
232 CWARN("Error adding the brw_stats file\n");
234 rc = lprocfs_init_rw_stats(obd, &exp->exp_nid_stats->nid_stats);
238 rc = lprocfs_register_stats(tmp->nid_proc, "stats",
247 /* Add client data to the FILTER. We use a bitmap to locate a free space
248 * in the last_rcvd file if cl_idx is -1 (i.e. a new client).
249 * Otherwise, we have just read the data from the last_rcvd file and
250 * we know its offset. */
251 static int filter_client_add(struct obd_device *obd, struct obd_export *exp,
254 struct filter_obd *filter = &obd->u.filter;
255 struct filter_export_data *fed = &exp->exp_filter_data;
256 unsigned long *bitmap = filter->fo_last_rcvd_slots;
257 int new_client = (cl_idx == -1);
261 LASSERT(bitmap != NULL);
262 LASSERTF(cl_idx > -2, "%d\n", cl_idx);
265 if (strcmp(fed->fed_lcd->lcd_uuid, obd->obd_uuid.uuid) == 0)
268 /* the bitmap operations can handle cl_idx > sizeof(long) * 8, so
269 * there's no need for extra complication here
272 cl_idx = find_first_zero_bit(bitmap, LR_MAX_CLIENTS);
274 if (cl_idx >= LR_MAX_CLIENTS) {
275 CERROR("no room for %u client - fix LR_MAX_CLIENTS\n",
279 if (test_and_set_bit(cl_idx, bitmap)) {
280 cl_idx = find_next_zero_bit(bitmap, LR_MAX_CLIENTS,
285 if (test_and_set_bit(cl_idx, bitmap)) {
286 CERROR("FILTER client %d: bit already set in bitmap!\n",
292 fed->fed_lr_idx = cl_idx;
293 fed->fed_lr_off = le32_to_cpu(filter->fo_fsd->lsd_client_start) +
294 cl_idx * le16_to_cpu(filter->fo_fsd->lsd_client_size);
295 LASSERTF(fed->fed_lr_off > 0, "fed_lr_off = %llu\n", fed->fed_lr_off);
297 CDEBUG(D_INFO, "client at index %d (%llu) with UUID '%s' added\n",
298 fed->fed_lr_idx, fed->fed_lr_off, fed->fed_lcd->lcd_uuid);
301 struct lvfs_run_ctxt saved;
302 loff_t off = fed->fed_lr_off;
306 CDEBUG(D_INFO, "writing client lcd at idx %u (%llu) (len %u)\n",
307 fed->fed_lr_idx,off,(unsigned int)sizeof(*fed->fed_lcd));
309 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
310 /* Transaction needed to fix bug 1403 */
311 handle = fsfilt_start(obd,
312 filter->fo_rcvd_filp->f_dentry->d_inode,
313 FSFILT_OP_SETATTR, NULL);
314 if (IS_ERR(handle)) {
315 rc = PTR_ERR(handle);
316 CERROR("unable to start transaction: rc %d\n", rc);
318 rc = fsfilt_add_journal_cb(obd, 0, handle,
319 target_client_add_cb, exp);
321 spin_lock(&exp->exp_lock);
322 exp->exp_need_sync = 1;
323 spin_unlock(&exp->exp_lock);
325 rc = fsfilt_write_record(obd, filter->fo_rcvd_filp,
327 sizeof(*fed->fed_lcd),
328 &off, rc /* sync if no cb */);
330 filter->fo_rcvd_filp->f_dentry->d_inode,
333 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
336 CERROR("error writing %s client idx %u: rc %d\n",
337 LAST_RCVD, fed->fed_lr_idx, rc);
344 static int filter_client_free(struct obd_export *exp)
346 struct filter_export_data *fed = &exp->exp_filter_data;
347 struct filter_obd *filter = &exp->exp_obd->u.filter;
348 struct obd_device *obd = exp->exp_obd;
349 struct lsd_client_data zero_lcd;
350 struct lvfs_run_ctxt saved;
355 if (fed->fed_lcd == NULL)
358 /* XXX if lcd_uuid were a real obd_uuid, I could use obd_uuid_equals */
359 if (strcmp(fed->fed_lcd->lcd_uuid, obd->obd_uuid.uuid ) == 0)
362 CDEBUG(D_INFO, "freeing client at idx %u, offset %lld with UUID '%s'\n",
363 fed->fed_lr_idx, fed->fed_lr_off, fed->fed_lcd->lcd_uuid);
365 LASSERT(filter->fo_last_rcvd_slots != NULL);
367 off = fed->fed_lr_off;
369 /* Don't clear fed_lr_idx here as it is likely also unset. At worst
370 * we leak a client slot that will be cleaned on the next recovery. */
372 CERROR("%s: client idx %d has med_off %lld\n",
373 obd->obd_name, fed->fed_lr_idx, off);
374 GOTO(free, rc = -EINVAL);
377 /* Clear the bit _after_ zeroing out the client so we don't
378 race with filter_client_add and zero out new clients.*/
379 if (!test_bit(fed->fed_lr_idx, filter->fo_last_rcvd_slots)) {
380 CERROR("FILTER client %u: bit already clear in bitmap!!\n",
385 if (!(exp->exp_flags & OBD_OPT_FAILOVER)) {
386 memset(&zero_lcd, 0, sizeof zero_lcd);
387 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
388 rc = fsfilt_write_record(obd, filter->fo_rcvd_filp, &zero_lcd,
389 sizeof(zero_lcd), &off,
390 (!exp->exp_libclient ||
391 exp->exp_need_sync));
393 /* update server's transno */
394 filter_update_server_data(obd, filter->fo_rcvd_filp,
396 !exp->exp_libclient);
397 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
399 CDEBUG(rc == 0 ? D_INFO : D_ERROR,
400 "zeroing out client %s at idx %u (%llu) in %s rc %d\n",
401 fed->fed_lcd->lcd_uuid, fed->fed_lr_idx, fed->fed_lr_off,
405 if (!test_and_clear_bit(fed->fed_lr_idx, filter->fo_last_rcvd_slots)) {
406 CERROR("FILTER client %u: bit already clear in bitmap!!\n",
413 OBD_FREE_PTR(fed->fed_lcd);
419 /* drop fmd reference, free it if last ref. must be called with fed_lock held.*/
420 static inline void filter_fmd_put_nolock(struct filter_export_data *fed,
421 struct filter_mod_data *fmd)
423 LASSERT_SPIN_LOCKED(&fed->fed_lock);
424 if (--fmd->fmd_refcount == 0) {
425 /* XXX when we have persistent reservations and the handle
426 * is stored herein we need to drop it here. */
427 fed->fed_mod_count--;
428 list_del(&fmd->fmd_list);
429 OBD_SLAB_FREE(fmd, ll_fmd_cachep, sizeof(*fmd));
433 /* drop fmd reference, free it if last ref */
434 void filter_fmd_put(struct obd_export *exp, struct filter_mod_data *fmd)
436 struct filter_export_data *fed;
441 fed = &exp->exp_filter_data;
442 spin_lock(&fed->fed_lock);
443 filter_fmd_put_nolock(fed, fmd); /* caller reference */
444 spin_unlock(&fed->fed_lock);
447 /* expire entries from the end of the list if there are too many
448 * or they are too old */
449 static void filter_fmd_expire_nolock(struct filter_obd *filter,
450 struct filter_export_data *fed,
451 struct filter_mod_data *keep)
453 struct filter_mod_data *fmd, *tmp;
455 list_for_each_entry_safe(fmd, tmp, &fed->fed_mod_list, fmd_list) {
459 if (time_before(jiffies, fmd->fmd_expire) &&
460 fed->fed_mod_count < filter->fo_fmd_max_num)
463 list_del_init(&fmd->fmd_list);
464 filter_fmd_put_nolock(fed, fmd); /* list reference */
468 void filter_fmd_expire(struct obd_export *exp)
470 spin_lock(&exp->exp_filter_data.fed_lock);
471 filter_fmd_expire_nolock(&exp->exp_obd->u.filter,
472 &exp->exp_filter_data, NULL);
473 spin_unlock(&exp->exp_filter_data.fed_lock);
476 /* find specified objid, group in export fmd list.
477 * caller must hold fed_lock and take fmd reference itself */
478 static struct filter_mod_data *filter_fmd_find_nolock(struct filter_obd *filter,
479 struct filter_export_data *fed,
480 obd_id objid, obd_gr group)
482 struct filter_mod_data *found = NULL, *fmd;
484 LASSERT_SPIN_LOCKED(&fed->fed_lock);
486 list_for_each_entry_reverse(fmd, &fed->fed_mod_list, fmd_list) {
487 if (fmd->fmd_id == objid && fmd->fmd_gr == group) {
489 list_del(&fmd->fmd_list);
490 list_add_tail(&fmd->fmd_list, &fed->fed_mod_list);
491 fmd->fmd_expire = jiffies + filter->fo_fmd_max_age;
496 filter_fmd_expire_nolock(filter, fed, found);
501 /* Find fmd based on objid and group, or return NULL if not found. */
502 struct filter_mod_data *filter_fmd_find(struct obd_export *exp,
503 obd_id objid, obd_gr group)
505 struct filter_mod_data *fmd;
507 spin_lock(&exp->exp_filter_data.fed_lock);
508 fmd = filter_fmd_find_nolock(&exp->exp_obd->u.filter,
509 &exp->exp_filter_data, objid, group);
511 fmd->fmd_refcount++; /* caller reference */
512 spin_unlock(&exp->exp_filter_data.fed_lock);
517 /* Find fmd based on objid and group, or create a new one if none is found.
518 * It is possible for this function to return NULL under memory pressure,
519 * or if objid = 0 is passed (which will only cause old entries to expire).
520 * Currently this is not fatal because any fmd state is transient and
521 * may also be freed when it gets sufficiently old. */
522 struct filter_mod_data *filter_fmd_get(struct obd_export *exp,
523 obd_id objid, obd_gr group)
525 struct filter_export_data *fed = &exp->exp_filter_data;
526 struct filter_mod_data *found = NULL, *fmd_new = NULL;
528 OBD_SLAB_ALLOC(fmd_new, ll_fmd_cachep, CFS_ALLOC_IO, sizeof(*fmd_new));
530 spin_lock(&fed->fed_lock);
531 found = filter_fmd_find_nolock(&exp->exp_obd->u.filter,fed,objid,group);
534 list_add_tail(&fmd_new->fmd_list, &fed->fed_mod_list);
535 fmd_new->fmd_id = objid;
536 fmd_new->fmd_gr = group;
537 fmd_new->fmd_refcount++; /* list reference */
539 fed->fed_mod_count++;
541 OBD_SLAB_FREE(fmd_new, ll_fmd_cachep, sizeof(*fmd_new));
545 found->fmd_refcount++; /* caller reference */
546 found->fmd_expire = jiffies +
547 exp->exp_obd->u.filter.fo_fmd_max_age;
550 spin_unlock(&fed->fed_lock);
556 /* drop fmd list reference so it will disappear when last reference is put.
557 * This isn't so critical because it would in fact only affect the one client
558 * that is doing the unlink and at worst we have an stale entry referencing
559 * an object that should never be used again. */
560 static void filter_fmd_drop(struct obd_export *exp, obd_id objid, obd_gr group)
562 struct filter_mod_data *found = NULL;
564 spin_lock(&exp->exp_filter_data.fed_lock);
565 found = filter_fmd_find_nolock(&exp->exp_filter_data, objid, group);
567 list_del_init(&found->fmd_list);
568 filter_fmd_put_nolock(&exp->exp_filter_data, found);
570 spin_unlock(&exp->exp_filter_data.fed_lock);
573 #define filter_fmd_drop(exp, objid, group)
576 /* remove all entries from fmd list */
577 static void filter_fmd_cleanup(struct obd_export *exp)
579 struct filter_export_data *fed = &exp->exp_filter_data;
580 struct filter_mod_data *fmd = NULL, *tmp;
582 spin_lock(&fed->fed_lock);
583 list_for_each_entry_safe(fmd, tmp, &fed->fed_mod_list, fmd_list) {
584 list_del_init(&fmd->fmd_list);
585 filter_fmd_put_nolock(fed, fmd);
587 spin_unlock(&fed->fed_lock);
590 static int filter_init_export(struct obd_export *exp)
592 spin_lock_init(&exp->exp_filter_data.fed_lock);
593 CFS_INIT_LIST_HEAD(&exp->exp_filter_data.fed_mod_list);
595 spin_lock(&exp->exp_lock);
596 exp->exp_connecting = 1;
597 spin_unlock(&exp->exp_lock);
599 return ldlm_init_export(exp);
602 static int filter_free_server_data(struct filter_obd *filter)
604 OBD_FREE(filter->fo_fsd, sizeof(*filter->fo_fsd));
605 filter->fo_fsd = NULL;
606 OBD_FREE(filter->fo_last_rcvd_slots, LR_MAX_CLIENTS / 8);
607 filter->fo_last_rcvd_slots = NULL;
611 /* assumes caller is already in kernel ctxt */
612 int filter_update_server_data(struct obd_device *obd, struct file *filp,
613 struct lr_server_data *fsd, int force_sync)
619 CDEBUG(D_INODE, "server uuid : %s\n", fsd->lsd_uuid);
620 CDEBUG(D_INODE, "server last_rcvd : "LPU64"\n",
621 le64_to_cpu(fsd->lsd_last_transno));
622 CDEBUG(D_INODE, "server last_mount: "LPU64"\n",
623 le64_to_cpu(fsd->lsd_mount_count));
625 fsd->lsd_compat14 = fsd->lsd_last_transno;
626 rc = fsfilt_write_record(obd, filp, fsd, sizeof(*fsd), &off, force_sync);
628 CERROR("error writing lr_server_data: rc = %d\n", rc);
633 int filter_update_last_objid(struct obd_device *obd, obd_gr group,
636 struct filter_obd *filter = &obd->u.filter;
642 if (filter->fo_last_objid_files[group] == NULL) {
643 CERROR("Object group "LPU64" not fully setup; not updating "
644 "last_objid\n", group);
648 CDEBUG(D_INODE, "%s: server last_objid for group "LPU64": "LPU64"\n",
649 obd->obd_name, group, filter->fo_last_objids[group]);
651 tmp = cpu_to_le64(filter->fo_last_objids[group]);
652 rc = fsfilt_write_record(obd, filter->fo_last_objid_files[group],
653 &tmp, sizeof(tmp), &off, force_sync);
655 CERROR("error writing group "LPU64" last objid: rc = %d\n",
659 extern int ost_handle(struct ptlrpc_request *req);
660 /* assumes caller has already in kernel ctxt */
661 static int filter_init_server_data(struct obd_device *obd, struct file * filp)
663 struct filter_obd *filter = &obd->u.filter;
664 struct lr_server_data *fsd;
665 struct lsd_client_data *lcd = NULL;
666 struct inode *inode = filp->f_dentry->d_inode;
667 unsigned long last_rcvd_size = i_size_read(inode);
673 /* ensure padding in the struct is the correct size */
674 CLASSERT (offsetof(struct lr_server_data, lsd_padding) +
675 sizeof(fsd->lsd_padding) == LR_SERVER_SIZE);
676 CLASSERT (offsetof(struct lsd_client_data, lcd_padding) +
677 sizeof(lcd->lcd_padding) == LR_CLIENT_SIZE);
679 OBD_ALLOC(fsd, sizeof(*fsd));
682 filter->fo_fsd = fsd;
684 OBD_ALLOC(filter->fo_last_rcvd_slots, LR_MAX_CLIENTS / 8);
685 if (filter->fo_last_rcvd_slots == NULL) {
686 OBD_FREE(fsd, sizeof(*fsd));
690 if (last_rcvd_size == 0) {
691 LCONSOLE_WARN("%s: new disk, initializing\n", obd->obd_name);
693 memcpy(fsd->lsd_uuid, obd->obd_uuid.uuid,sizeof(fsd->lsd_uuid));
694 fsd->lsd_last_transno = 0;
695 mount_count = fsd->lsd_mount_count = 0;
696 fsd->lsd_server_size = cpu_to_le32(LR_SERVER_SIZE);
697 fsd->lsd_client_start = cpu_to_le32(LR_CLIENT_START);
698 fsd->lsd_client_size = cpu_to_le16(LR_CLIENT_SIZE);
699 fsd->lsd_subdir_count = cpu_to_le16(FILTER_SUBDIR_COUNT);
700 filter->fo_subdir_count = FILTER_SUBDIR_COUNT;
701 fsd->lsd_feature_incompat = cpu_to_le32(OBD_INCOMPAT_OST);
703 rc = fsfilt_read_record(obd, filp, fsd, sizeof(*fsd), &off);
705 CDEBUG(D_INODE,"OBD filter: error reading %s: rc %d\n",
709 if (strcmp(fsd->lsd_uuid, obd->obd_uuid.uuid) != 0) {
710 LCONSOLE_ERROR_MSG(0x134, "Trying to start OBD %s "
711 "using the wrong disk %s. Were the "
712 "/dev/ assignments rearranged?\n",
713 obd->obd_uuid.uuid, fsd->lsd_uuid);
714 GOTO(err_fsd, rc = -EINVAL);
716 mount_count = le64_to_cpu(fsd->lsd_mount_count);
717 filter->fo_subdir_count = le16_to_cpu(fsd->lsd_subdir_count);
719 /* Assume old last_rcvd format unless I_C_LR is set */
720 if (!(fsd->lsd_feature_incompat &
721 cpu_to_le32(OBD_INCOMPAT_COMMON_LR)))
722 fsd->lsd_last_transno = fsd->lsd_compat14;
726 if (fsd->lsd_feature_incompat & ~cpu_to_le32(FILTER_INCOMPAT_SUPP)) {
727 CERROR("%s: unsupported incompat filesystem feature(s) %x\n",
728 obd->obd_name, le32_to_cpu(fsd->lsd_feature_incompat) &
729 ~FILTER_INCOMPAT_SUPP);
730 GOTO(err_fsd, rc = -EINVAL);
732 if (fsd->lsd_feature_rocompat & ~cpu_to_le32(FILTER_ROCOMPAT_SUPP)) {
733 CERROR("%s: unsupported read-only filesystem feature(s) %x\n",
734 obd->obd_name, le32_to_cpu(fsd->lsd_feature_rocompat) &
735 ~FILTER_ROCOMPAT_SUPP);
736 /* Do something like remount filesystem read-only */
737 GOTO(err_fsd, rc = -EINVAL);
740 CDEBUG(D_INODE, "%s: server last_transno : "LPU64"\n",
741 obd->obd_name, le64_to_cpu(fsd->lsd_last_transno));
742 CDEBUG(D_INODE, "%s: server mount_count: "LPU64"\n",
743 obd->obd_name, mount_count + 1);
744 CDEBUG(D_INODE, "%s: server data size: %u\n",
745 obd->obd_name, le32_to_cpu(fsd->lsd_server_size));
746 CDEBUG(D_INODE, "%s: per-client data start: %u\n",
747 obd->obd_name, le32_to_cpu(fsd->lsd_client_start));
748 CDEBUG(D_INODE, "%s: per-client data size: %u\n",
749 obd->obd_name, le32_to_cpu(fsd->lsd_client_size));
750 CDEBUG(D_INODE, "%s: server subdir_count: %u\n",
751 obd->obd_name, le16_to_cpu(fsd->lsd_subdir_count));
752 CDEBUG(D_INODE, "%s: last_rcvd clients: %lu\n", obd->obd_name,
753 last_rcvd_size <= le32_to_cpu(fsd->lsd_client_start) ? 0 :
754 (last_rcvd_size - le32_to_cpu(fsd->lsd_client_start)) /
755 le16_to_cpu(fsd->lsd_client_size));
757 if (!obd->obd_replayable) {
758 CWARN("%s: recovery support OFF\n", obd->obd_name);
762 for (cl_idx = 0, off = le32_to_cpu(fsd->lsd_client_start);
763 off < last_rcvd_size; cl_idx++) {
765 struct obd_export *exp;
766 struct filter_export_data *fed;
771 GOTO(err_client, rc = -ENOMEM);
774 /* Don't assume off is incremented properly by
775 * fsfilt_read_record(), in case sizeof(*lcd)
776 * isn't the same as fsd->lsd_client_size. */
777 off = le32_to_cpu(fsd->lsd_client_start) +
778 cl_idx * le16_to_cpu(fsd->lsd_client_size);
779 rc = fsfilt_read_record(obd, filp, lcd, sizeof(*lcd), &off);
781 CERROR("error reading FILT %s idx %d off %llu: rc %d\n",
782 LAST_RCVD, cl_idx, off, rc);
783 break; /* read error shouldn't cause startup to fail */
786 if (lcd->lcd_uuid[0] == '\0') {
787 CDEBUG(D_INFO, "skipping zeroed client at offset %d\n",
792 last_rcvd = le64_to_cpu(lcd->lcd_last_transno);
794 /* These exports are cleaned up by filter_disconnect(), so they
795 * need to be set up like real exports as filter_connect() does.
797 exp = class_new_export(obd, (struct obd_uuid *)lcd->lcd_uuid);
799 CDEBUG(D_HA, "RCVRNG CLIENT uuid: %s idx: %d lr: "LPU64
800 " srv lr: "LPU64"\n", lcd->lcd_uuid, cl_idx,
801 last_rcvd, le64_to_cpu(fsd->lsd_last_transno));
803 if (PTR_ERR(exp) == -EALREADY) {
804 /* export already exists, zero out this one */
805 CERROR("Zeroing out duplicate export due to "
807 lcd->lcd_uuid[0] = '\0';
809 GOTO(err_client, rc = PTR_ERR(exp));
812 fed = &exp->exp_filter_data;
814 fed->fed_group = 0; /* will be assigned at connect */
815 filter_export_stats_init(obd, exp, NULL);
816 rc = filter_client_add(obd, exp, cl_idx);
817 /* can't fail for existing client */
818 LASSERTF(rc == 0, "rc = %d\n", rc);
821 spin_lock(&exp->exp_lock);
822 exp->exp_connecting = 0;
823 exp->exp_in_recovery = 0;
824 spin_unlock(&exp->exp_lock);
825 obd->obd_max_recoverable_clients++;
826 class_export_put(exp);
829 /* Need to check last_rcvd even for duplicated exports. */
830 CDEBUG(D_OTHER, "client at idx %d has last_rcvd = "LPU64"\n",
833 if (last_rcvd > le64_to_cpu(fsd->lsd_last_transno))
834 fsd->lsd_last_transno = cpu_to_le64(last_rcvd);
840 obd->obd_last_committed = le64_to_cpu(fsd->lsd_last_transno);
842 target_recovery_init(obd, ost_handle);
845 filter->fo_mount_count = mount_count + 1;
846 fsd->lsd_mount_count = cpu_to_le64(filter->fo_mount_count);
848 /* save it, so mount count and last_transno is current */
849 rc = filter_update_server_data(obd, filp, filter->fo_fsd, 1);
851 GOTO(err_client, rc);
856 target_recovery_fini(obd);
858 filter_free_server_data(filter);
862 static int filter_cleanup_groups(struct obd_device *obd)
864 struct filter_obd *filter = &obd->u.filter;
866 struct dentry *dentry;
870 if (filter->fo_dentry_O_groups != NULL) {
871 for (i = 0; i < filter->fo_group_count; i++) {
872 dentry = filter->fo_dentry_O_groups[i];
876 OBD_FREE(filter->fo_dentry_O_groups,
877 filter->fo_group_count *
878 sizeof(*filter->fo_dentry_O_groups));
879 filter->fo_dentry_O_groups = NULL;
881 if (filter->fo_last_objid_files != NULL) {
882 for (i = 0; i < filter->fo_group_count; i++) {
883 filp = filter->fo_last_objid_files[i];
887 OBD_FREE(filter->fo_last_objid_files,
888 filter->fo_group_count *
889 sizeof(*filter->fo_last_objid_files));
890 filter->fo_last_objid_files = NULL;
892 if (filter->fo_dentry_O_sub != NULL) {
893 for (i = 0; i < filter->fo_group_count; i++) {
894 for (j = 0; j < filter->fo_subdir_count; j++) {
895 dentry = filter->fo_dentry_O_sub[i].dentry[j];
900 OBD_FREE(filter->fo_dentry_O_sub,
901 filter->fo_group_count *
902 sizeof(*filter->fo_dentry_O_sub));
903 filter->fo_dentry_O_sub = NULL;
905 if (filter->fo_last_objids != NULL) {
906 OBD_FREE(filter->fo_last_objids,
907 filter->fo_group_count *
908 sizeof(*filter->fo_last_objids));
909 filter->fo_last_objids = NULL;
911 if (filter->fo_dentry_O != NULL) {
912 f_dput(filter->fo_dentry_O);
913 filter->fo_dentry_O = NULL;
918 static int filter_update_last_group(struct obd_device *obd, int group)
920 struct filter_obd *filter = &obd->u.filter;
921 struct file *filp = NULL;
922 int last_group = 0, rc;
926 if (group <= filter->fo_committed_group)
929 filp = filp_open("LAST_GROUP", O_RDWR, 0700);
933 CERROR("cannot open LAST_GROUP: rc = %d\n", rc);
937 rc = fsfilt_read_record(obd, filp, &last_group, sizeof(__u32), &off);
939 CDEBUG(D_INODE, "error reading LAST_GROUP: rc %d\n",rc);
942 LASSERT(off == 0 || last_group >= FILTER_MIN_GROUPS);
943 CDEBUG(D_INODE, "%s: previous %d, new %d\n",
944 obd->obd_name, last_group, group);
948 /* must be sync: bXXXX */
949 rc = fsfilt_write_record(obd, filp, &last_group, sizeof(__u32), &off, 1);
951 CDEBUG(D_INODE, "error updating LAST_GROUP: rc %d\n", rc);
955 filter->fo_committed_group = group;
962 static int filter_read_group_internal(struct obd_device *obd, int group,
965 struct filter_obd *filter = &obd->u.filter;
966 __u64 *new_objids = NULL;
967 struct filter_subdirs *new_subdirs = NULL, *tmp_subdirs = NULL;
968 struct dentry **new_groups = NULL;
969 struct file **new_files = NULL;
970 struct dentry *dentry;
972 int old_count = filter->fo_group_count, rc, stage = 0, i;
978 snprintf(name, 24, "%d", group);
982 dentry = ll_lookup_one_len(name, filter->fo_dentry_O,
984 if (IS_ERR(dentry)) {
985 CERROR("Cannot lookup expected object group %d: %ld\n",
986 group, PTR_ERR(dentry));
987 RETURN(PTR_ERR(dentry));
990 dentry = simple_mkdir(filter->fo_dentry_O, filter->fo_vfsmnt,
992 if (IS_ERR(dentry)) {
993 CERROR("cannot lookup/create O/%s: rc = %ld\n", name,
995 RETURN(PTR_ERR(dentry));
1000 snprintf(name, 24, "O/%d/LAST_ID", group);
1002 filp = filp_open(name, O_CREAT | O_RDWR, 0700);
1004 CERROR("cannot create %s: rc = %ld\n", name, PTR_ERR(filp));
1005 GOTO(cleanup, rc = PTR_ERR(filp));
1009 rc = fsfilt_read_record(obd, filp, &last_objid, sizeof(__u64), &off);
1011 CDEBUG(D_INODE, "error reading %s: rc %d\n", name, rc);
1015 if (filter->fo_subdir_count) {
1016 OBD_ALLOC(tmp_subdirs, sizeof(*tmp_subdirs));
1017 if (tmp_subdirs == NULL)
1018 GOTO(cleanup, rc = -ENOMEM);
1021 for (i = 0; i < filter->fo_subdir_count; i++) {
1023 snprintf(dir, sizeof(dir), "d%u", i);
1025 tmp_subdirs->dentry[i] = simple_mkdir(dentry,
1028 if (IS_ERR(tmp_subdirs->dentry[i])) {
1029 rc = PTR_ERR(tmp_subdirs->dentry[i]);
1030 CERROR("can't lookup/create O/%d/%s: rc = %d\n",
1035 CDEBUG(D_INODE, "got/created O/%d/%s: %p\n", group, dir,
1036 tmp_subdirs->dentry[i]);
1040 /* 'group' is an index; we need an array of length 'group + 1' */
1041 if (group + 1 > old_count) {
1042 OBD_ALLOC(new_objids, len * sizeof(*new_objids));
1043 OBD_ALLOC(new_subdirs, len * sizeof(*new_subdirs));
1044 OBD_ALLOC(new_groups, len * sizeof(*new_groups));
1045 OBD_ALLOC(new_files, len * sizeof(*new_files));
1047 if (new_objids == NULL || new_subdirs == NULL ||
1048 new_groups == NULL || new_files == NULL)
1049 GOTO(cleanup, rc = -ENOMEM);
1052 memcpy(new_objids, filter->fo_last_objids,
1053 old_count * sizeof(*new_objids));
1054 memcpy(new_subdirs, filter->fo_dentry_O_sub,
1055 old_count * sizeof(*new_subdirs));
1056 memcpy(new_groups, filter->fo_dentry_O_groups,
1057 old_count * sizeof(*new_groups));
1058 memcpy(new_files, filter->fo_last_objid_files,
1059 old_count * sizeof(*new_files));
1061 OBD_FREE(filter->fo_last_objids,
1062 old_count * sizeof(*new_objids));
1063 OBD_FREE(filter->fo_dentry_O_sub,
1064 old_count * sizeof(*new_subdirs));
1065 OBD_FREE(filter->fo_dentry_O_groups,
1066 old_count * sizeof(*new_groups));
1067 OBD_FREE(filter->fo_last_objid_files,
1068 old_count * sizeof(*new_files));
1070 filter->fo_last_objids = new_objids;
1071 filter->fo_dentry_O_sub = new_subdirs;
1072 filter->fo_dentry_O_groups = new_groups;
1073 filter->fo_last_objid_files = new_files;
1074 filter->fo_group_count = len;
1077 filter->fo_dentry_O_groups[group] = dentry;
1078 filter->fo_last_objid_files[group] = filp;
1079 if (filter->fo_subdir_count) {
1080 filter->fo_dentry_O_sub[group] = *tmp_subdirs;
1081 OBD_FREE(tmp_subdirs, sizeof(*tmp_subdirs));
1084 filter_update_last_group(obd, group);
1086 if (i_size_read(filp->f_dentry->d_inode) == 0) {
1087 filter->fo_last_objids[group] = FILTER_INIT_OBJID;
1088 rc = filter_update_last_objid(obd, group, 1);
1092 filter->fo_last_objids[group] = le64_to_cpu(last_objid);
1093 CDEBUG(D_INODE, "%s: server last_objid group %d: "LPU64"\n",
1094 obd->obd_name, group, last_objid);
1099 if (new_objids != NULL)
1100 OBD_FREE(new_objids, len * sizeof(*new_objids));
1101 if (new_subdirs != NULL)
1102 OBD_FREE(new_subdirs, len * sizeof(*new_subdirs));
1103 if (new_groups != NULL)
1104 OBD_FREE(new_groups, len * sizeof(*new_groups));
1105 if (new_files != NULL)
1106 OBD_FREE(new_files, len * sizeof(*new_files));
1108 if (filter->fo_subdir_count) {
1109 for (i = 0; i < filter->fo_subdir_count; i++) {
1110 if (tmp_subdirs->dentry[i] != NULL)
1111 dput(tmp_subdirs->dentry[i]);
1113 OBD_FREE(tmp_subdirs, sizeof(*tmp_subdirs));
1116 filp_close(filp, 0);
1123 static int filter_read_groups(struct obd_device *obd, int last_group,
1126 struct filter_obd *filter = &obd->u.filter;
1127 int old_count, group, rc = 0;
1129 down(&filter->fo_init_lock);
1130 old_count = filter->fo_group_count;
1131 for (group = old_count; group <= last_group; group++) {
1133 continue; /* no group zero */
1135 rc = filter_read_group_internal(obd, group, create);
1139 up(&filter->fo_init_lock);
1143 /* FIXME: object groups */
1144 static int filter_prep_groups(struct obd_device *obd)
1146 struct filter_obd *filter = &obd->u.filter;
1147 struct dentry *dentry, *O_dentry;
1149 int last_group, rc = 0, cleanup_phase = 0;
1153 O_dentry = simple_mkdir(current->fs->pwd, filter->fo_vfsmnt,
1155 CDEBUG(D_INODE, "got/created O: %p\n", O_dentry);
1156 if (IS_ERR(O_dentry)) {
1157 rc = PTR_ERR(O_dentry);
1158 CERROR("cannot open/create O: rc = %d\n", rc);
1161 filter->fo_dentry_O = O_dentry;
1162 cleanup_phase = 1; /* O_dentry */
1164 /* Lookup "R" to tell if we're on an old OST FS and need to convert
1165 * from O/R/<dir>/<objid> to O/0/<dir>/<objid>. This can be removed
1166 * some time post 1.0 when all old-style OSTs have converted along
1167 * with the init_objid hack. */
1168 dentry = ll_lookup_one_len("R", O_dentry, 1);
1170 GOTO(cleanup, rc = PTR_ERR(dentry));
1171 if (dentry->d_inode && S_ISDIR(dentry->d_inode->i_mode)) {
1172 struct dentry *O0_dentry = lookup_one_len("0", O_dentry, 1);
1175 CWARN("converting OST to new object layout\n");
1176 if (IS_ERR(O0_dentry)) {
1177 rc = PTR_ERR(O0_dentry);
1178 CERROR("error looking up O/0: rc %d\n", rc);
1179 GOTO(cleanup_R, rc);
1182 if (O0_dentry->d_inode) {
1183 CERROR("Both O/R and O/0 exist. Fix manually.\n");
1184 GOTO(cleanup_O0, rc = -EEXIST);
1187 LOCK_INODE_MUTEX(O_dentry->d_inode);
1188 rc = ll_vfs_rename(O_dentry->d_inode, dentry, filter->fo_vfsmnt,
1189 O_dentry->d_inode, O0_dentry,
1191 UNLOCK_INODE_MUTEX(O_dentry->d_inode);
1194 CERROR("error renaming O/R to O/0: rc %d\n", rc);
1195 GOTO(cleanup_O0, rc);
1197 filter->fo_fsd->lsd_feature_incompat |=
1198 cpu_to_le32(OBD_INCOMPAT_GROUPS);
1199 rc = filter_update_server_data(obd, filter->fo_rcvd_filp,
1201 GOTO(cleanup_O0, rc);
1213 cleanup_phase = 2; /* groups */
1215 /* we have to initialize all groups before first connections from
1216 * clients because they may send create/destroy for any group -bzzz */
1217 filp = filp_open("LAST_GROUP", O_CREAT | O_RDWR, 0700);
1219 CERROR("cannot create LAST_GROUP: rc = %ld\n", PTR_ERR(filp));
1220 GOTO(cleanup, rc = PTR_ERR(filp));
1222 cleanup_phase = 3; /* filp */
1224 rc = fsfilt_read_record(obd, filp, &last_group, sizeof(__u32), &off);
1226 CDEBUG(D_INODE, "error reading LAST_GROUP: rc %d\n", rc);
1230 last_group = FILTER_MIN_GROUPS;
1232 LASSERT(last_group >= FILTER_MIN_GROUPS);
1235 CWARN("%s: initialize groups [%d,%d]\n", obd->obd_name,
1236 FILTER_MIN_GROUPS, last_group);
1237 filter->fo_committed_group = last_group;
1238 rc = filter_read_groups(obd, last_group, 1);
1242 filp_close(filp, 0);
1246 switch (cleanup_phase) {
1248 filp_close(filp, 0);
1250 filter_cleanup_groups(obd);
1252 f_dput(filter->fo_dentry_O);
1253 filter->fo_dentry_O = NULL;
1261 /* setup the object store with correct subdirectories */
1262 static int filter_prep(struct obd_device *obd)
1264 struct lvfs_run_ctxt saved;
1265 struct filter_obd *filter = &obd->u.filter;
1267 struct inode *inode;
1271 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
1272 file = filp_open(LAST_RCVD, O_RDWR | O_CREAT | O_LARGEFILE, 0700);
1273 if (!file || IS_ERR(file)) {
1275 CERROR("OBD filter: cannot open/create %s: rc = %d\n",
1279 filter->fo_rcvd_filp = file;
1280 if (!S_ISREG(file->f_dentry->d_inode->i_mode)) {
1281 CERROR("%s is not a regular file!: mode = %o\n", LAST_RCVD,
1282 file->f_dentry->d_inode->i_mode);
1283 GOTO(err_filp, rc = -ENOENT);
1286 inode = file->f_dentry->d_parent->d_inode;
1287 /* We use i_op->unlink directly in filter_vfs_unlink() */
1288 if (!inode->i_op || !inode->i_op->create || !inode->i_op->unlink) {
1289 CERROR("%s: filesystem does not support create/unlink ops\n",
1291 GOTO(err_filp, rc = -EOPNOTSUPP);
1294 rc = filter_init_server_data(obd, file);
1296 CERROR("cannot read %s: rc = %d\n", LAST_RCVD, rc);
1299 /* open and create health check io file*/
1300 file = filp_open(HEALTH_CHECK, O_RDWR | O_CREAT, 0644);
1303 CERROR("OBD filter: cannot open/create %s rc = %d\n",
1305 GOTO(err_server_data, rc);
1307 filter->fo_health_check_filp = file;
1308 if (!S_ISREG(file->f_dentry->d_inode->i_mode)) {
1309 CERROR("%s is not a regular file!: mode = %o\n", HEALTH_CHECK,
1310 file->f_dentry->d_inode->i_mode);
1311 GOTO(err_health_check, rc = -ENOENT);
1313 rc = lvfs_check_io_health(obd, file);
1315 GOTO(err_health_check, rc);
1317 rc = filter_prep_groups(obd);
1319 GOTO(err_health_check, rc);
1321 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
1326 if (filp_close(filter->fo_health_check_filp, 0))
1327 CERROR("can't close %s after error\n", HEALTH_CHECK);
1328 filter->fo_health_check_filp = NULL;
1330 target_recovery_fini(obd);
1331 filter_free_server_data(filter);
1333 if (filp_close(filter->fo_rcvd_filp, 0))
1334 CERROR("can't close %s after error\n", LAST_RCVD);
1335 filter->fo_rcvd_filp = NULL;
1339 /* cleanup the filter: write last used object id to status file */
1340 static void filter_post(struct obd_device *obd)
1342 struct lvfs_run_ctxt saved;
1343 struct filter_obd *filter = &obd->u.filter;
1346 /* XXX: filter_update_lastobjid used to call fsync_dev. It might be
1347 * best to start a transaction with h_sync, because we removed this
1350 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
1351 rc = filter_update_server_data(obd, filter->fo_rcvd_filp,
1354 CERROR("error writing server data: rc = %d\n", rc);
1356 for (i = 1; i < filter->fo_group_count; i++) {
1357 rc = filter_update_last_objid(obd, i,
1358 (i == filter->fo_group_count - 1));
1360 CERROR("error writing group %d lastobjid: rc = %d\n",
1364 rc = filp_close(filter->fo_rcvd_filp, 0);
1365 filter->fo_rcvd_filp = NULL;
1367 CERROR("error closing %s: rc = %d\n", LAST_RCVD, rc);
1369 rc = filp_close(filter->fo_health_check_filp, 0);
1370 filter->fo_health_check_filp = NULL;
1372 CERROR("error closing %s: rc = %d\n", HEALTH_CHECK, rc);
1374 filter_cleanup_groups(obd);
1375 filter_free_server_data(filter);
1376 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
1378 filter_free_capa_keys(filter);
1379 cleanup_capa_hash(filter->fo_capa_hash);
1382 static void filter_set_last_id(struct filter_obd *filter,
1383 obd_id id, obd_gr group)
1385 LASSERT(filter->fo_fsd != NULL);
1386 LASSERT(group <= filter->fo_group_count);
1388 spin_lock(&filter->fo_objidlock);
1389 filter->fo_last_objids[group] = id;
1390 spin_unlock(&filter->fo_objidlock);
1393 obd_id filter_last_id(struct filter_obd *filter, obd_gr group)
1396 LASSERT(filter->fo_fsd != NULL);
1397 LASSERT(group <= filter->fo_group_count);
1399 /* FIXME: object groups */
1400 spin_lock(&filter->fo_objidlock);
1401 id = filter->fo_last_objids[group];
1402 spin_unlock(&filter->fo_objidlock);
1407 static int filter_lock_dentry(struct obd_device *obd, struct dentry *dparent)
1409 LOCK_INODE_MUTEX_PARENT(dparent->d_inode);
1413 /* We never dget the object parent, so DON'T dput it either */
1414 struct dentry *filter_parent(struct obd_device *obd, obd_gr group, obd_id objid)
1416 struct filter_obd *filter = &obd->u.filter;
1417 struct filter_subdirs *subdirs;
1418 LASSERT(group < filter->fo_group_count); /* FIXME: object groups */
1420 if ((group > 0 && group < FILTER_GROUP_MDS0) ||
1421 filter->fo_subdir_count == 0)
1422 return filter->fo_dentry_O_groups[group];
1424 subdirs = &filter->fo_dentry_O_sub[group];
1425 return subdirs->dentry[objid & (filter->fo_subdir_count - 1)];
1428 /* We never dget the object parent, so DON'T dput it either */
1429 struct dentry *filter_parent_lock(struct obd_device *obd, obd_gr group,
1432 unsigned long now = jiffies;
1433 struct dentry *dparent = filter_parent(obd, group, objid);
1436 if (IS_ERR(dparent))
1438 if (dparent == NULL)
1439 return ERR_PTR(-ENOENT);
1441 rc = filter_lock_dentry(obd, dparent);
1442 fsfilt_check_slow(obd, now, "parent lock");
1443 return rc ? ERR_PTR(rc) : dparent;
1446 /* We never dget the object parent, so DON'T dput it either */
1447 static void filter_parent_unlock(struct dentry *dparent)
1449 UNLOCK_INODE_MUTEX(dparent->d_inode);
1452 /* How to get files, dentries, inodes from object id's.
1454 * If dir_dentry is passed, the caller has already locked the parent
1455 * appropriately for this operation (normally a write lock). If
1456 * dir_dentry is NULL, we do a read lock while we do the lookup to
1457 * avoid races with create/destroy and such changing the directory
1458 * internal to the filesystem code. */
1459 struct dentry *filter_fid2dentry(struct obd_device *obd,
1460 struct dentry *dir_dentry,
1461 obd_gr group, obd_id id)
1463 struct dentry *dparent = dir_dentry;
1464 struct dentry *dchild;
1469 if (OBD_FAIL_CHECK(OBD_FAIL_OST_ENOENT) &&
1470 obd->u.filter.fo_destroys_in_progress == 0) {
1471 /* don't fail lookups for orphan recovery, it causes
1472 * later LBUGs when objects still exist during precreate */
1473 CDEBUG(D_INFO, "*** obd_fail_loc=%x ***\n",OBD_FAIL_OST_ENOENT);
1474 RETURN(ERR_PTR(-ENOENT));
1477 CERROR("fatal: invalid object id 0\n");
1478 RETURN(ERR_PTR(-ESTALE));
1481 len = sprintf(name, LPU64, id);
1482 if (dir_dentry == NULL) {
1483 dparent = filter_parent_lock(obd, group, id);
1484 if (IS_ERR(dparent)) {
1485 CERROR("%s: error getting object "LPU64":"LPU64
1486 " parent: rc %ld\n", obd->obd_name,
1487 id, group, PTR_ERR(dparent));
1491 CDEBUG(D_INODE, "looking up object O/%.*s/%s\n",
1492 dparent->d_name.len, dparent->d_name.name, name);
1493 dchild = /*ll_*/lookup_one_len(name, dparent, len);
1494 if (dir_dentry == NULL)
1495 filter_parent_unlock(dparent);
1496 if (IS_ERR(dchild)) {
1497 CERROR("%s: child lookup error %ld\n", obd->obd_name,
1502 if (dchild->d_inode != NULL && is_bad_inode(dchild->d_inode)) {
1503 CERROR("%s: got bad object "LPU64" inode %lu\n",
1504 obd->obd_name, id, dchild->d_inode->i_ino);
1506 RETURN(ERR_PTR(-ENOENT));
1509 CDEBUG(D_INODE, "got child objid %s: %p, count = %d\n",
1510 name, dchild, atomic_read(&dchild->d_count));
1512 LASSERT(atomic_read(&dchild->d_count) > 0);
1517 static int filter_prepare_destroy(struct obd_device *obd, obd_id objid,
1520 struct lustre_handle lockh;
1521 int flags = LDLM_AST_DISCARD_DATA, rc;
1522 struct ldlm_res_id res_id;
1523 ldlm_policy_data_t policy = { .l_extent = { 0, OBD_OBJECT_EOF } };
1526 osc_build_res_name(objid, group, &res_id);
1527 /* Tell the clients that the object is gone now and that they should
1528 * throw away any cached pages. */
1529 rc = ldlm_cli_enqueue_local(obd->obd_namespace, &res_id, LDLM_EXTENT,
1530 &policy, LCK_PW, &flags, ldlm_blocking_ast,
1531 ldlm_completion_ast, NULL, NULL, 0, NULL,
1534 /* We only care about the side-effects, just drop the lock. */
1536 ldlm_lock_decref(&lockh, LCK_PW);
1541 /* This is vfs_unlink() without down(i_sem). If we call regular vfs_unlink()
1542 * we have 2.6 lock ordering issues with filter_commitrw_write() as it takes
1543 * i_sem before starting a handle, while filter_destroy() + vfs_unlink do the
1544 * reverse. Caller must take i_sem before starting the transaction and we
1545 * drop it here before the inode is removed from the dentry. bug 4180/6984 */
1546 int filter_vfs_unlink(struct inode *dir, struct dentry *dentry,
1547 struct vfsmount *mnt)
1552 /* don't need dir->i_zombie for 2.4, it is for rename/unlink of dir
1553 * itself we already hold dir->i_mutex for child create/unlink ops */
1554 LASSERT(dentry->d_inode != NULL);
1555 LASSERT(TRYLOCK_INODE_MUTEX(dir) == 0);
1556 LASSERT(TRYLOCK_INODE_MUTEX(dentry->d_inode) == 0);
1560 if (/*!dentry->d_inode ||*/dentry->d_parent->d_inode != dir)
1561 GOTO(out, rc = -ENOENT);
1563 rc = ll_permission(dir, MAY_WRITE | MAY_EXEC, NULL);
1568 GOTO(out, rc = -EPERM);
1570 /* check_sticky() */
1571 if ((dentry->d_inode->i_uid != current->fsuid &&
1572 !cfs_capable(CFS_CAP_FOWNER)) || IS_APPEND(dentry->d_inode) ||
1573 IS_IMMUTABLE(dentry->d_inode))
1574 GOTO(out, rc = -EPERM);
1576 /* NOTE: This might need to go outside i_mutex, though it isn't clear if
1577 * that was done because of journal_start (which is already done
1578 * here) or some other ordering issue. */
1581 rc = ll_security_inode_unlink(dir, dentry, mnt);
1585 rc = dir->i_op->unlink(dir, dentry);
1587 /* need to drop i_mutex before we lose inode reference */
1588 UNLOCK_INODE_MUTEX(dentry->d_inode);
1595 /* Caller must hold LCK_PW on parent and push us into kernel context.
1596 * Caller must hold child i_mutex, we drop it always.
1597 * Caller is also required to ensure that dchild->d_inode exists. */
1598 static int filter_destroy_internal(struct obd_device *obd, obd_id objid,
1599 obd_gr group, struct dentry *dparent,
1600 struct dentry *dchild)
1602 struct inode *inode = dchild->d_inode;
1603 struct filter_obd *filter = &obd->u.filter;
1606 if (inode->i_nlink != 1 || atomic_read(&inode->i_count) != 1) {
1607 CERROR("destroying objid %.*s ino %lu nlink %lu count %d\n",
1608 dchild->d_name.len, dchild->d_name.name, inode->i_ino,
1609 (unsigned long)inode->i_nlink,
1610 atomic_read(&inode->i_count));
1613 rc = filter_vfs_unlink(dparent->d_inode, dchild, filter->fo_vfsmnt);
1615 CERROR("error unlinking objid %.*s: rc %d\n",
1616 dchild->d_name.len, dchild->d_name.name, rc);
1620 struct filter_intent_args {
1621 struct ldlm_lock **victim;
1626 static enum interval_iter filter_intent_cb(struct interval_node *n,
1629 struct ldlm_interval *node = (struct ldlm_interval *)n;
1630 struct filter_intent_args *arg = (struct filter_intent_args*)args;
1631 __u64 size = arg->size;
1632 struct ldlm_lock **v = arg->victim;
1633 struct ldlm_lock *lck;
1635 /* If the interval is lower than the current file size,
1637 if (interval_high(n) <= size)
1638 return INTERVAL_ITER_STOP;
1640 list_for_each_entry(lck, &node->li_group, l_sl_policy) {
1641 /* Don't send glimpse ASTs to liblustre clients.
1642 * They aren't listening for them, and they do
1643 * entirely synchronous I/O anyways. */
1644 if (lck->l_export == NULL ||
1645 lck->l_export->exp_libclient == 1)
1648 if (*arg->liblustre)
1649 *arg->liblustre = 0;
1652 *v = LDLM_LOCK_GET(lck);
1653 } else if ((*v)->l_policy_data.l_extent.start <
1654 lck->l_policy_data.l_extent.start) {
1655 LDLM_LOCK_RELEASE(*v);
1656 *v = LDLM_LOCK_GET(lck);
1659 /* the same policy group - every lock has the
1660 * same extent, so needn't do it any more */
1664 return INTERVAL_ITER_CONT;
1667 static int filter_intent_policy(struct ldlm_namespace *ns,
1668 struct ldlm_lock **lockp, void *req_cookie,
1669 ldlm_mode_t mode, int flags, void *data)
1671 CFS_LIST_HEAD(rpc_list);
1672 struct ptlrpc_request *req = req_cookie;
1673 struct ldlm_lock *lock = *lockp, *l = NULL;
1674 struct ldlm_resource *res = lock->l_resource;
1675 ldlm_processing_policy policy;
1676 struct ost_lvb *res_lvb, *reply_lvb;
1677 struct ldlm_reply *rep;
1679 int idx, rc, tmpflags = 0, only_liblustre = 1;
1680 struct ldlm_interval_tree *tree;
1681 struct filter_intent_args arg;
1682 __u32 repsize[3] = { [MSG_PTLRPC_BODY_OFF] = sizeof(struct ptlrpc_body),
1683 [DLM_LOCKREPLY_OFF] = sizeof(*rep),
1684 [DLM_REPLY_REC_OFF] = sizeof(*reply_lvb) };
1687 policy = ldlm_get_processing_policy(res);
1688 LASSERT(policy != NULL);
1689 LASSERT(req != NULL);
1691 rc = lustre_pack_reply(req, 3, repsize, NULL);
1693 RETURN(req->rq_status = rc);
1695 rep = lustre_msg_buf(req->rq_repmsg, DLM_LOCKREPLY_OFF, sizeof(*rep));
1696 LASSERT(rep != NULL);
1698 reply_lvb = lustre_msg_buf(req->rq_repmsg, DLM_REPLY_REC_OFF,
1699 sizeof(*reply_lvb));
1700 LASSERT(reply_lvb != NULL);
1702 //fixup_handle_for_resent_req(req, lock, &lockh);
1704 /* Call the extent policy function to see if our request can be
1705 * granted, or is blocked.
1706 * If the OST lock has LDLM_FL_HAS_INTENT set, it means a glimpse
1707 * lock, and should not be granted if the lock will be blocked.
1710 LASSERT(ns == res->lr_namespace);
1712 rc = policy(lock, &tmpflags, 0, &err, &rpc_list);
1713 check_res_locked(res);
1715 /* FIXME: we should change the policy function slightly, to not make
1716 * this list at all, since we just turn around and free it */
1717 while (!list_empty(&rpc_list)) {
1718 struct ldlm_lock *wlock =
1719 list_entry(rpc_list.next, struct ldlm_lock, l_cp_ast);
1720 LASSERT((lock->l_flags & LDLM_FL_AST_SENT) == 0);
1721 LASSERT(lock->l_flags & LDLM_FL_CP_REQD);
1722 lock->l_flags &= ~LDLM_FL_CP_REQD;
1723 list_del_init(&wlock->l_cp_ast);
1724 LDLM_LOCK_RELEASE(wlock);
1727 /* The lock met with no resistance; we're finished. */
1728 if (rc == LDLM_ITER_CONTINUE) {
1729 /* do not grant locks to the liblustre clients: they cannot
1730 * handle ASTs robustly. We need to do this while still
1731 * holding ns_lock to avoid the lock remaining on the res_link
1732 * list (and potentially being added to l_pending_list by an
1733 * AST) when we are going to drop this lock ASAP. */
1734 if (lock->l_export->exp_libclient ||
1735 OBD_FAIL_TIMEOUT(OBD_FAIL_LDLM_GLIMPSE, 2)) {
1736 ldlm_resource_unlink_lock(lock);
1737 err = ELDLM_LOCK_ABORTED;
1739 err = ELDLM_LOCK_REPLACED;
1745 /* Do not grant any lock, but instead send GL callbacks. The extent
1746 * policy nicely created a list of all PW locks for us. We will choose
1747 * the highest of those which are larger than the size in the LVB, if
1748 * any, and perform a glimpse callback. */
1749 res_lvb = res->lr_lvb_data;
1750 LASSERT(res_lvb != NULL);
1751 *reply_lvb = *res_lvb;
1754 * ->ns_lock guarantees that no new locks are granted, and,
1755 * therefore, that res->lr_lvb_data cannot increase beyond the
1756 * end of already granted lock. As a result, it is safe to
1757 * check against "stale" reply_lvb->lvb_size value without
1760 arg.size = reply_lvb->lvb_size;
1762 arg.liblustre = &only_liblustre;
1763 for (idx = 0; idx < LCK_MODE_NUM; idx++) {
1764 tree = &res->lr_itree[idx];
1765 if (tree->lit_mode == LCK_PR)
1768 interval_iterate_reverse(tree->lit_root,
1769 filter_intent_cb, &arg);
1773 /* There were no PW locks beyond the size in the LVB; finished. */
1775 if (only_liblustre) {
1776 /* If we discovered a liblustre client with a PW lock,
1777 * however, the LVB may be out of date! The LVB is
1778 * updated only on glimpse (which we don't do for
1779 * liblustre clients) and cancel (which the client
1780 * obviously has not yet done). So if it has written
1781 * data but kept the lock, the LVB is stale and needs
1782 * to be updated from disk.
1784 * Of course, this will all disappear when we switch to
1785 * taking liblustre locks on the OST. */
1786 ldlm_res_lvbo_update(res, NULL, 0, 1);
1788 RETURN(ELDLM_LOCK_ABORTED);
1792 * This check is for lock taken in filter_prepare_destroy() that does
1793 * not have l_glimpse_ast set. So the logic is: if there is a lock
1794 * with no l_glimpse_ast set, this object is being destroyed already.
1796 * Hence, if you are grabbing DLM locks on the server, always set
1797 * non-NULL glimpse_ast (e.g., ldlm_request.c:ldlm_glimpse_ast()).
1799 if (l->l_glimpse_ast == NULL) {
1800 /* We are racing with unlink(); just return -ENOENT */
1801 rep->lock_policy_res1 = -ENOENT;
1805 LASSERTF(l->l_glimpse_ast != NULL, "l == %p", l);
1806 rc = l->l_glimpse_ast(l, NULL); /* this will update the LVB */
1807 /* Update the LVB from disk if the AST failed (this is a legal race) */
1809 * XXX nikita: situation when ldlm_server_glimpse_ast() failed before
1810 * sending ast is not handled. This can result in lost client writes.
1813 ldlm_res_lvbo_update(res, NULL, 0, 1);
1816 *reply_lvb = *res_lvb;
1820 LDLM_LOCK_RELEASE(l);
1822 RETURN(ELDLM_LOCK_ABORTED);
1826 * per-obd_device iobuf pool.
1828 * To avoid memory deadlocks in low-memory setups, amount of dynamic
1829 * allocations in write-path has to be minimized (see bug 5137).
1831 * Pages, niobuf_local's and niobuf_remote's are pre-allocated and attached to
1832 * OST threads (see ost_thread_{init,done}()).
1834 * "iobuf's" used by filter cannot be attached to OST thread, however, because
1835 * at the OST layer there are only (potentially) multiple obd_device of type
1836 * unknown at the time of OST thread creation.
1838 * Instead array of iobuf's is attached to struct filter_obd (->fo_iobuf_pool
1839 * field). This array has size OST_MAX_THREADS, so that each OST thread uses
1840 * it's very own iobuf.
1844 * filter_kiobuf_pool_init()
1846 * filter_kiobuf_pool_done()
1848 * filter_iobuf_get()
1850 * operate on this array. They are "generic" in a sense that they don't depend
1851 * on actual type of iobuf's (the latter depending on Linux kernel version).
1855 * destroy pool created by filter_iobuf_pool_init
1857 static void filter_iobuf_pool_done(struct filter_obd *filter)
1859 struct filter_iobuf **pool;
1864 pool = filter->fo_iobuf_pool;
1866 for (i = 0; i < filter->fo_iobuf_count; ++ i) {
1867 if (pool[i] != NULL)
1868 filter_free_iobuf(pool[i]);
1870 OBD_FREE(pool, filter->fo_iobuf_count * sizeof pool[0]);
1871 filter->fo_iobuf_pool = NULL;
1877 * pre-allocate pool of iobuf's to be used by filter_{prep,commit}rw_write().
1879 static int filter_iobuf_pool_init(struct filter_obd *filter)
1886 OBD_ALLOC_GFP(filter->fo_iobuf_pool, OSS_THREADS_MAX * sizeof(*pool),
1888 if (filter->fo_iobuf_pool == NULL)
1891 filter->fo_iobuf_count = OSS_THREADS_MAX;
1896 /* Return iobuf allocated for @thread_id. We don't know in advance how
1897 * many threads there will be so we allocate a large empty array and only
1898 * fill in those slots that are actually in use.
1899 * If we haven't allocated a pool entry for this thread before, do so now. */
1900 void *filter_iobuf_get(struct filter_obd *filter, struct obd_trans_info *oti)
1902 int thread_id = oti ? oti->oti_thread_id : -1;
1903 struct filter_iobuf *pool = NULL;
1904 struct filter_iobuf **pool_place = NULL;
1906 if (thread_id >= 0) {
1907 LASSERT(thread_id < filter->fo_iobuf_count);
1908 pool = *(pool_place = &filter->fo_iobuf_pool[thread_id]);
1911 if (unlikely(pool == NULL)) {
1912 pool = filter_alloc_iobuf(filter, OBD_BRW_WRITE,
1913 PTLRPC_MAX_BRW_PAGES);
1914 if (pool_place != NULL)
1921 /* mount the file system (secretly). lustre_cfg parameters are:
1924 * 3 = flags: failover=f, failout=n
1927 int filter_common_setup(struct obd_device *obd, struct lustre_cfg* lcfg,
1930 struct filter_obd *filter = &obd->u.filter;
1931 struct vfsmount *mnt;
1932 struct lustre_mount_info *lmi;
1933 struct obd_uuid uuid;
1941 if (lcfg->lcfg_bufcount < 3 ||
1942 LUSTRE_CFG_BUFLEN(lcfg, 1) < 1 ||
1943 LUSTRE_CFG_BUFLEN(lcfg, 2) < 1)
1946 lmi = server_get_mount(obd->obd_name);
1948 /* We already mounted in lustre_fill_super.
1949 lcfg bufs 1, 2, 4 (device, fstype, mount opts) are ignored.*/
1950 struct lustre_sb_info *lsi = s2lsi(lmi->lmi_sb);
1952 obd->obd_fsops = fsfilt_get_ops(MT_STR(lsi->lsi_ldd));
1954 /* old path - used by lctl */
1955 CERROR("Using old MDS mount method\n");
1956 mnt = ll_kern_mount(lustre_cfg_string(lcfg, 2),
1957 MS_NOATIME|MS_NODIRATIME,
1958 lustre_cfg_string(lcfg, 1), option);
1961 LCONSOLE_ERROR_MSG(0x135, "Can't mount disk %s (%d)\n",
1962 lustre_cfg_string(lcfg, 1), rc);
1966 obd->obd_fsops = fsfilt_get_ops(lustre_cfg_string(lcfg, 2));
1968 if (IS_ERR(obd->obd_fsops))
1969 GOTO(err_mntput, rc = PTR_ERR(obd->obd_fsops));
1971 rc = filter_iobuf_pool_init(filter);
1975 LASSERT(!lvfs_check_rdonly(lvfs_sbdev(mnt->mnt_sb)));
1977 /* failover is the default */
1978 obd->obd_replayable = 1;
1980 if (lcfg->lcfg_bufcount > 3 && LUSTRE_CFG_BUFLEN(lcfg, 3) > 0) {
1981 str = lustre_cfg_string(lcfg, 3);
1982 if (strchr(str, 'n')) {
1983 CWARN("%s: recovery disabled\n", obd->obd_name);
1984 obd->obd_replayable = 0;
1988 filter->fo_vfsmnt = mnt;
1989 obd->u.obt.obt_sb = mnt->mnt_sb;
1990 filter->fo_fstype = mnt->mnt_sb->s_type->name;
1991 CDEBUG(D_SUPER, "%s: mnt = %p\n", filter->fo_fstype, mnt);
1993 fsfilt_setup(obd, obd->u.obt.obt_sb);
1995 OBD_SET_CTXT_MAGIC(&obd->obd_lvfs_ctxt);
1996 obd->obd_lvfs_ctxt.pwdmnt = mnt;
1997 obd->obd_lvfs_ctxt.pwd = mnt->mnt_root;
1998 obd->obd_lvfs_ctxt.fs = get_ds();
1999 obd->obd_lvfs_ctxt.cb_ops = filter_lvfs_ops;
2001 init_mutex(&filter->fo_init_lock);
2002 filter->fo_committed_group = 0;
2004 rc = filter_prep(obd);
2008 filter->fo_destroys_in_progress = 0;
2009 for (i = 0; i < 32; i++)
2010 sema_init(&filter->fo_create_locks[i], 1);
2012 spin_lock_init(&filter->fo_translock);
2013 spin_lock_init(&filter->fo_objidlock);
2014 CFS_INIT_LIST_HEAD(&filter->fo_export_list);
2015 sema_init(&filter->fo_alloc_lock, 1);
2016 init_brw_stats(&filter->fo_filter_stats);
2017 filter->fo_read_cache = 1; /* enable read-only cache by default */
2018 filter->fo_writethrough_cache = 0; /* disable writethrough cache */
2019 filter->fo_readcache_max_filesize = FILTER_MAX_CACHE_SIZE;
2020 filter->fo_fmd_max_num = FILTER_FMD_MAX_NUM_DEFAULT;
2021 filter->fo_fmd_max_age = FILTER_FMD_MAX_AGE_DEFAULT;
2023 CFS_INIT_LIST_HEAD(&filter->fo_llog_list);
2024 spin_lock_init(&filter->fo_llog_list_lock);
2026 rwlock_init(&filter->fo_sptlrpc_lock);
2027 sptlrpc_rule_set_init(&filter->fo_sptlrpc_rset);
2029 filter->fo_fl_oss_capa = 0;
2030 CFS_INIT_LIST_HEAD(&filter->fo_capa_keys);
2031 filter->fo_capa_hash = init_capa_hash();
2032 if (filter->fo_capa_hash == NULL)
2033 GOTO(err_ops, rc = -ENOMEM);
2035 sprintf(ns_name, "filter-%s", obd->obd_uuid.uuid);
2036 obd->obd_namespace = ldlm_namespace_new(obd, ns_name, LDLM_NAMESPACE_SERVER,
2037 LDLM_NAMESPACE_GREEDY);
2038 if (obd->obd_namespace == NULL)
2039 GOTO(err_post, rc = -ENOMEM);
2040 obd->obd_namespace->ns_lvbp = obd;
2041 obd->obd_namespace->ns_lvbo = &filter_lvbo;
2042 ldlm_register_intent(obd->obd_namespace, filter_intent_policy);
2044 ptlrpc_init_client(LDLM_CB_REQUEST_PORTAL, LDLM_CB_REPLY_PORTAL,
2045 "filter_ldlm_cb_client", &obd->obd_ldlm_client);
2047 rc = obd_llog_init(obd, &obd->obd_olg, obd, 1, NULL, NULL);
2049 CERROR("failed to setup llogging subsystems\n");
2053 rc = lquota_setup(filter_quota_interface_ref, obd);
2057 q = bdev_get_queue(mnt->mnt_sb->s_bdev);
2058 if (q->max_sectors < q->max_hw_sectors &&
2059 q->max_sectors < PTLRPC_MAX_BRW_SIZE >> 9)
2060 LCONSOLE_INFO("%s: underlying device %s should be tuned "
2061 "for larger I/O requests: max_sectors = %u "
2062 "could be up to max_hw_sectors=%u\n",
2063 obd->obd_name, mnt->mnt_sb->s_id,
2064 q->max_sectors, q->max_hw_sectors);
2066 uuid_ptr = fsfilt_uuid(obd, obd->u.obt.obt_sb);
2067 if (uuid_ptr != NULL) {
2068 class_uuid_unparse(uuid_ptr, &uuid);
2074 label = fsfilt_get_label(obd, obd->u.obt.obt_sb);
2076 if (obd->obd_recovering) {
2077 LCONSOLE_WARN("OST %s now serving %s (%s%s%s), but will be in "
2078 "recovery for at least %d:%.02d, or until %d "
2079 "client%s reconnect. During this time new clients"
2080 " will not be allowed to connect. "
2081 "Recovery progress can be monitored by watching "
2082 "/proc/fs/lustre/obdfilter/%s/recovery_status.\n",
2083 obd->obd_name, lustre_cfg_string(lcfg, 1),
2084 label ?: "", label ? "/" : "", str,
2085 obd->obd_recovery_timeout / 60,
2086 obd->obd_recovery_timeout % 60,
2087 obd->obd_max_recoverable_clients,
2088 (obd->obd_max_recoverable_clients == 1) ? "":"s",
2091 LCONSOLE_INFO("OST %s now serving %s (%s%s%s) with recovery "
2092 "%s\n", obd->obd_name, lustre_cfg_string(lcfg, 1),
2093 label ?: "", label ? "/" : "", str,
2094 obd->obd_replayable ? "enabled" : "disabled");
2102 fsfilt_put_ops(obd->obd_fsops);
2103 filter_iobuf_pool_done(filter);
2105 server_put_mount(obd->obd_name, mnt);
2106 obd->u.obt.obt_sb = 0;
2110 static int filter_setup(struct obd_device *obd, struct lustre_cfg* lcfg)
2112 struct lprocfs_static_vars lvars;
2117 CLASSERT(offsetof(struct obd_device, u.obt) ==
2118 offsetof(struct obd_device, u.filter.fo_obt));
2120 if (!LUSTRE_CFG_BUFLEN(lcfg, 1) || !LUSTRE_CFG_BUFLEN(lcfg, 2))
2123 /* 2.6.9 selinux wants a full option page for do_kern_mount (bug6471) */
2124 OBD_PAGE_ALLOC(page, CFS_ALLOC_STD);
2127 addr = (unsigned long)cfs_page_address(page);
2128 clear_page((void *)addr);
2130 /* lprocfs must be setup before the filter so state can be safely added
2131 * to /proc incrementally as the filter is setup */
2132 lprocfs_filter_init_vars(&lvars);
2133 if (lprocfs_obd_setup(obd, lvars.obd_vars) == 0 &&
2134 lprocfs_alloc_obd_stats(obd, LPROC_FILTER_LAST) == 0) {
2135 /* Init obdfilter private stats here */
2136 lprocfs_counter_init(obd->obd_stats, LPROC_FILTER_READ_BYTES,
2137 LPROCFS_CNTR_AVGMINMAX,
2138 "read_bytes", "bytes");
2139 lprocfs_counter_init(obd->obd_stats, LPROC_FILTER_WRITE_BYTES,
2140 LPROCFS_CNTR_AVGMINMAX,
2141 "write_bytes", "bytes");
2142 lprocfs_counter_init(obd->obd_stats, LPROC_FILTER_GET_PAGE,
2143 LPROCFS_CNTR_AVGMINMAX|LPROCFS_CNTR_STDDEV,
2144 "get_page", "usec");
2145 lprocfs_counter_init(obd->obd_stats, LPROC_FILTER_NO_PAGE,
2146 LPROCFS_CNTR_AVGMINMAX,
2147 "get_page_failures", "num");
2148 lprocfs_counter_init(obd->obd_stats, LPROC_FILTER_CACHE_ACCESS,
2149 LPROCFS_CNTR_AVGMINMAX,
2150 "cache_access", "pages");
2151 lprocfs_counter_init(obd->obd_stats, LPROC_FILTER_CACHE_HIT,
2152 LPROCFS_CNTR_AVGMINMAX,
2153 "cache_hit", "pages");
2154 lprocfs_counter_init(obd->obd_stats, LPROC_FILTER_CACHE_MISS,
2155 LPROCFS_CNTR_AVGMINMAX,
2156 "cache_miss", "pages");
2158 lproc_filter_attach_seqstat(obd);
2159 obd->obd_proc_exports_entry = lprocfs_register("exports",
2160 obd->obd_proc_entry,
2162 if (IS_ERR(obd->obd_proc_exports_entry)) {
2163 rc = PTR_ERR(obd->obd_proc_exports_entry);
2164 CERROR("error %d setting up lprocfs for %s\n",
2166 obd->obd_proc_exports_entry = NULL;
2169 if (obd->obd_proc_exports_entry)
2170 lprocfs_add_simple(obd->obd_proc_exports_entry, "clear",
2171 lprocfs_nid_stats_clear_read,
2172 lprocfs_nid_stats_clear_write, obd, NULL);
2174 memcpy((void *)addr, lustre_cfg_buf(lcfg, 4),
2175 LUSTRE_CFG_BUFLEN(lcfg, 4));
2176 rc = filter_common_setup(obd, lcfg, (void *)addr);
2177 OBD_PAGE_FREE(page);
2180 lprocfs_remove_proc_entry("clear", obd->obd_proc_exports_entry);
2181 lprocfs_free_per_client_stats(obd);
2182 lprocfs_free_obd_stats(obd);
2183 lprocfs_obd_cleanup(obd);
2189 static struct llog_operations filter_mds_ost_repl_logops;
2191 static struct llog_operations filter_size_orig_logops = {
2192 .lop_setup = llog_obd_origin_setup,
2193 .lop_cleanup = llog_obd_origin_cleanup,
2194 .lop_add = llog_obd_origin_add
2197 static int filter_olg_fini(struct obd_llog_group *olg)
2199 struct llog_ctxt *ctxt;
2200 int rc = 0, rc2 = 0;
2203 ctxt = llog_group_get_ctxt(olg, LLOG_MDS_OST_REPL_CTXT);
2205 rc = llog_cleanup(ctxt);
2207 ctxt = llog_group_get_ctxt(olg, LLOG_SIZE_ORIG_CTXT);
2209 rc2 = llog_cleanup(ctxt);
2217 filter_olg_init(struct obd_device *obd, struct obd_llog_group *olg,
2218 struct obd_device *tgt)
2223 rc = llog_setup(obd, olg, LLOG_MDS_OST_REPL_CTXT, tgt, 0, NULL,
2224 &filter_mds_ost_repl_logops);
2228 rc = llog_setup(obd, olg, LLOG_SIZE_ORIG_CTXT, tgt, 0, NULL,
2229 &filter_size_orig_logops);
2235 filter_olg_fini(olg);
2240 * Init the default olg, which is embeded in the obd_device, for filter.
2243 filter_default_olg_init(struct obd_device *obd, struct obd_llog_group *olg,
2244 struct obd_device *tgt)
2246 struct filter_obd *filter = &obd->u.filter;
2247 struct llog_ctxt *ctxt;
2251 filter->fo_lcm = llog_recov_thread_init(obd->obd_name);
2252 if (!filter->fo_lcm)
2255 filter_mds_ost_repl_logops = llog_client_ops;
2256 filter_mds_ost_repl_logops.lop_cancel = llog_obd_repl_cancel;
2257 filter_mds_ost_repl_logops.lop_connect = llog_obd_repl_connect;
2258 filter_mds_ost_repl_logops.lop_sync = llog_obd_repl_sync;
2260 rc = filter_olg_init(obd, olg, tgt);
2262 GOTO(cleanup_lcm, rc);
2264 ctxt = llog_group_get_ctxt(olg, LLOG_MDS_OST_REPL_CTXT);
2266 CERROR("Can't get ctxt for %p:%x\n", olg,
2267 LLOG_MDS_OST_REPL_CTXT);
2268 GOTO(cleanup_olg, rc = -ENODEV);
2270 ctxt->loc_lcm = filter->fo_lcm;
2271 ctxt->llog_proc_cb = filter_recov_log_mds_ost_cb;
2272 llog_ctxt_put(ctxt);
2276 filter_olg_fini(olg);
2278 llog_recov_thread_fini(filter->fo_lcm, 1);
2279 filter->fo_lcm = NULL;
2284 filter_llog_init(struct obd_device *obd, struct obd_llog_group *olg,
2285 struct obd_device *tgt, int count, struct llog_catid *catid,
2286 struct obd_uuid *uuid)
2288 struct filter_obd *filter = &obd->u.filter;
2289 struct llog_ctxt *ctxt;
2293 LASSERT(olg != NULL);
2294 if (olg == &obd->obd_olg)
2295 return filter_default_olg_init(obd, olg, tgt);
2297 LASSERT(filter->fo_lcm != NULL);
2298 rc = filter_olg_init(obd, olg, tgt);
2301 ctxt = llog_group_get_ctxt(olg, LLOG_MDS_OST_REPL_CTXT);
2303 CERROR("Can't get ctxt for %p:%x\n", olg,
2304 LLOG_MDS_OST_REPL_CTXT);
2305 filter_olg_fini(olg);
2308 ctxt->llog_proc_cb = filter_recov_log_mds_ost_cb;
2309 ctxt->loc_lcm = filter->fo_lcm;
2310 llog_ctxt_put(ctxt);
2314 static int filter_llog_finish(struct obd_device *obd, int count)
2316 struct filter_obd *filter = &obd->u.filter;
2317 struct llog_ctxt *ctxt;
2320 ctxt = llog_group_get_ctxt(&obd->obd_olg, LLOG_MDS_OST_REPL_CTXT);
2321 LASSERT(ctxt != NULL);
2322 mutex_down(&ctxt->loc_sem);
2323 if (ctxt->loc_imp) {
2325 * Balance class_import_get() in llog_receptor_accept(). This
2326 * is safe to do here, as llog is already synchronized and its
2329 class_import_put(ctxt->loc_imp);
2330 ctxt->loc_imp = NULL;
2332 mutex_up(&ctxt->loc_sem);
2333 llog_ctxt_put(ctxt);
2335 if (filter->fo_lcm) {
2336 llog_recov_thread_fini(filter->fo_lcm, obd->obd_force);
2337 filter->fo_lcm = NULL;
2339 RETURN(filter_olg_fini(&obd->obd_olg));
2343 * Find the group llog according to group index in the llog group list.
2345 static struct obd_llog_group *
2346 filter_find_olg_internal(struct filter_obd *filter, int group)
2348 struct obd_llog_group *olg;
2350 LASSERT_SPIN_LOCKED(&filter->fo_llog_list_lock);
2351 list_for_each_entry(olg, &filter->fo_llog_list, olg_list) {
2352 if (olg->olg_group == group)
2359 * Find the group llog according to group index on the filter
2361 struct obd_llog_group *filter_find_olg(struct obd_device *obd, int group)
2363 struct obd_llog_group *olg = NULL;
2364 struct filter_obd *filter;
2366 filter = &obd->u.filter;
2368 if (group == FILTER_GROUP_LLOG)
2369 RETURN(&obd->obd_olg);
2371 spin_lock(&filter->fo_llog_list_lock);
2372 olg = filter_find_olg_internal(filter, group);
2373 spin_unlock(&filter->fo_llog_list_lock);
2378 * Find the llog_group of the filter according to the group. If it can not
2379 * find, create the llog_group, which only happens when mds is being synced
2382 struct obd_llog_group *filter_find_create_olg(struct obd_device *obd, int group)
2384 struct obd_llog_group *olg = NULL;
2385 struct filter_obd *filter;
2388 filter = &obd->u.filter;
2390 if (group == FILTER_GROUP_LLOG)
2391 RETURN(&obd->obd_olg);
2393 spin_lock(&filter->fo_llog_list_lock);
2394 olg = filter_find_olg_internal(filter, group);
2396 if (olg->olg_initializing) {
2397 GOTO(out_unlock, olg = ERR_PTR(-EBUSY));
2399 GOTO(out_unlock, olg);
2404 GOTO(out_unlock, olg = ERR_PTR(-ENOMEM));
2406 llog_group_init(olg, group);
2407 list_add(&olg->olg_list, &filter->fo_llog_list);
2408 olg->olg_initializing = 1;
2409 spin_unlock(&filter->fo_llog_list_lock);
2411 rc = llog_cat_initialize(obd, olg, 1, NULL);
2413 spin_lock(&filter->fo_llog_list_lock);
2414 list_del(&olg->olg_list);
2415 spin_unlock(&filter->fo_llog_list_lock);
2417 GOTO(out, olg = ERR_PTR(-ENOMEM));
2419 spin_lock(&filter->fo_llog_list_lock);
2420 olg->olg_initializing = 0;
2421 spin_unlock(&filter->fo_llog_list_lock);
2422 CDEBUG(D_OTHER, "%s: new llog group %u (0x%p)\n",
2423 obd->obd_name, group, olg);
2428 spin_unlock(&filter->fo_llog_list_lock);
2432 static int filter_llog_connect(struct obd_export *exp,
2433 struct llogd_conn_body *body)
2435 struct obd_device *obd = exp->exp_obd;
2436 struct llog_ctxt *ctxt;
2437 struct obd_llog_group *olg;
2441 CDEBUG(D_OTHER, "handle connect for %s: %u/%u/%u\n", obd->obd_name,
2442 (unsigned) body->lgdc_logid.lgl_ogr,
2443 (unsigned) body->lgdc_logid.lgl_oid,
2444 (unsigned) body->lgdc_logid.lgl_ogen);
2446 olg = filter_find_olg(obd, body->lgdc_logid.lgl_ogr);
2448 CERROR(" %s: can not find olg of group %d\n",
2449 obd->obd_name, (int)body->lgdc_logid.lgl_ogr);
2452 llog_group_set_export(olg, exp);
2454 ctxt = llog_group_get_ctxt(olg, body->lgdc_ctxt_idx);
2455 LASSERTF(ctxt != NULL, "ctxt is not null, ctxt idx %d \n",
2456 body->lgdc_ctxt_idx);
2457 rc = llog_connect(ctxt, 1, &body->lgdc_logid,
2458 &body->lgdc_gen, NULL);
2459 llog_ctxt_put(ctxt);
2461 CERROR("failed to connect rc %d idx %d\n", rc,
2462 body->lgdc_ctxt_idx);
2467 static int filter_llog_preclean(struct obd_device *obd)
2469 struct obd_llog_group *olg, *tmp;
2470 struct filter_obd *filter;
2471 struct list_head remove_list;
2475 rc = obd_llog_finish(obd, 0);
2477 CERROR("failed to cleanup llogging subsystem\n");
2479 filter = &obd->u.filter;
2480 CFS_INIT_LIST_HEAD(&remove_list);
2482 spin_lock(&filter->fo_llog_list_lock);
2483 while (!list_empty(&filter->fo_llog_list)) {
2484 olg = list_entry(filter->fo_llog_list.next,
2485 struct obd_llog_group, olg_list);
2486 list_del(&olg->olg_list);
2487 list_add(&olg->olg_list, &remove_list);
2489 spin_unlock(&filter->fo_llog_list_lock);
2491 list_for_each_entry_safe(olg, tmp, &remove_list, olg_list) {
2492 list_del_init(&olg->olg_list);
2493 rc = filter_olg_fini(olg);
2495 CERROR("failed to cleanup llogging subsystem for %u\n",
2503 static int filter_precleanup(struct obd_device *obd,
2504 enum obd_cleanup_stage stage)
2510 case OBD_CLEANUP_EARLY:
2512 case OBD_CLEANUP_EXPORTS:
2513 target_cleanup_recovery(obd);
2514 rc = filter_llog_preclean(obd);
2520 static int filter_cleanup(struct obd_device *obd)
2522 struct filter_obd *filter = &obd->u.filter;
2526 LCONSOLE_WARN("%s: shutting down for failover; client state "
2527 "will be preserved.\n", obd->obd_name);
2529 if (!list_empty(&obd->obd_exports)) {
2530 CERROR("%s: still has clients!\n", obd->obd_name);
2531 class_disconnect_exports(obd);
2532 if (!list_empty(&obd->obd_exports)) {
2533 CERROR("still has exports after forced cleanup?\n");
2538 lprocfs_remove_proc_entry("clear", obd->obd_proc_exports_entry);
2539 lprocfs_free_per_client_stats(obd);
2540 lprocfs_free_obd_stats(obd);
2541 lprocfs_obd_cleanup(obd);
2542 lquota_cleanup(filter_quota_interface_ref, obd);
2544 /* Stop recovery before namespace cleanup. */
2545 target_stop_recovery_thread(obd);
2546 target_cleanup_recovery(obd);
2548 ldlm_namespace_free(obd->obd_namespace, NULL, obd->obd_force);
2549 obd->obd_namespace = NULL;
2551 sptlrpc_rule_set_free(&filter->fo_sptlrpc_rset);
2553 if (obd->u.obt.obt_sb == NULL)
2558 LL_DQUOT_OFF(obd->u.obt.obt_sb);
2559 shrink_dcache_sb(obd->u.obt.obt_sb);
2561 server_put_mount(obd->obd_name, filter->fo_vfsmnt);
2562 obd->u.obt.obt_sb = NULL;
2564 fsfilt_put_ops(obd->obd_fsops);
2566 filter_iobuf_pool_done(filter);
2568 LCONSOLE_INFO("OST %s has stopped.\n", obd->obd_name);
2573 static int filter_connect_internal(struct obd_export *exp,
2574 struct obd_connect_data *data)
2576 struct filter_export_data *fed = &exp->exp_filter_data;
2581 CDEBUG(D_RPCTRACE, "%s: cli %s/%p ocd_connect_flags: "LPX64
2582 " ocd_version: %x ocd_grant: %d ocd_index: %u\n",
2583 exp->exp_obd->obd_name, exp->exp_client_uuid.uuid, exp,
2584 data->ocd_connect_flags, data->ocd_version,
2585 data->ocd_grant, data->ocd_index);
2587 if (fed->fed_group != 0 && fed->fed_group != data->ocd_group) {
2588 CWARN("!!! This export (nid %s) used object group %d "
2589 "earlier; now it's trying to use group %d! This could "
2590 "be a bug in the MDS. Please report to "
2591 "http://bugzilla.lustre.org/\n",
2592 obd_export_nid2str(exp), fed->fed_group,data->ocd_group);
2595 fed->fed_group = data->ocd_group;
2597 data->ocd_connect_flags &= OST_CONNECT_SUPPORTED;
2598 exp->exp_connect_flags = data->ocd_connect_flags;
2599 data->ocd_version = LUSTRE_VERSION_CODE;
2601 if (exp->exp_connect_flags & OBD_CONNECT_GRANT) {
2602 obd_size left, want;
2604 spin_lock(&exp->exp_obd->obd_osfs_lock);
2605 left = filter_grant_space_left(exp);
2606 want = data->ocd_grant;
2607 filter_grant(exp, fed->fed_grant, want, left);
2608 data->ocd_grant = fed->fed_grant;
2609 spin_unlock(&exp->exp_obd->obd_osfs_lock);
2611 CDEBUG(D_CACHE, "%s: cli %s/%p ocd_grant: %d want: "
2612 LPU64" left: "LPU64"\n", exp->exp_obd->obd_name,
2613 exp->exp_client_uuid.uuid, exp,
2614 data->ocd_grant, want, left);
2617 if (data->ocd_connect_flags & OBD_CONNECT_INDEX) {
2618 struct filter_obd *filter = &exp->exp_obd->u.filter;
2619 struct lr_server_data *lsd = filter->fo_fsd;
2620 int index = le32_to_cpu(lsd->lsd_ost_index);
2622 if (!(lsd->lsd_feature_compat &
2623 cpu_to_le32(OBD_COMPAT_OST))) {
2624 /* this will only happen on the first connect */
2625 lsd->lsd_ost_index = cpu_to_le32(data->ocd_index);
2626 lsd->lsd_feature_compat |= cpu_to_le32(OBD_COMPAT_OST);
2627 filter_update_server_data(exp->exp_obd,
2628 filter->fo_rcvd_filp, lsd, 1);
2629 } else if (index != data->ocd_index) {
2630 LCONSOLE_ERROR_MSG(0x136, "Connection from %s to index"
2631 " %u doesn't match actual OST index"
2632 " %u in last_rcvd file, bad "
2634 obd_export_nid2str(exp), index,
2640 if (OBD_FAIL_CHECK(OBD_FAIL_OST_BRW_SIZE)) {
2641 data->ocd_brw_size = 65536;
2642 } else if (data->ocd_connect_flags & OBD_CONNECT_BRW_SIZE) {
2643 data->ocd_brw_size = min(data->ocd_brw_size,
2644 (__u32)(PTLRPC_MAX_BRW_PAGES << CFS_PAGE_SHIFT));
2645 LASSERT(data->ocd_brw_size);
2648 if (data->ocd_connect_flags & OBD_CONNECT_CKSUM) {
2649 __u32 cksum_types = data->ocd_cksum_types;
2651 /* The client set in ocd_cksum_types the checksum types it
2652 * supports. We have to mask off the algorithms that we don't
2654 if (cksum_types & OBD_CKSUM_ALL)
2655 data->ocd_cksum_types &= OBD_CKSUM_ALL;
2657 data->ocd_cksum_types = OBD_CKSUM_CRC32;
2659 CDEBUG(D_RPCTRACE, "%s: cli %s supports cksum type %x, return "
2660 "%x\n", exp->exp_obd->obd_name,
2661 obd_export_nid2str(exp), cksum_types,
2662 data->ocd_cksum_types);
2664 /* This client does not support OBD_CONNECT_CKSUM
2665 * fall back to CRC32 */
2666 CDEBUG(D_RPCTRACE, "%s: cli %s does not support "
2667 "OBD_CONNECT_CKSUM, CRC32 will be used\n",
2668 exp->exp_obd->obd_name,
2669 obd_export_nid2str(exp));
2672 /* FIXME: Do the same with the MDS UUID and fsd_peeruuid.
2673 * FIXME: We don't strictly need the COMPAT flag for that,
2674 * FIXME: as fsd_peeruuid[0] will tell us if that is set.
2675 * FIXME: We needed it for the index, as index 0 is valid. */
2680 static int filter_reconnect(const struct lu_env *env,
2681 struct obd_export *exp, struct obd_device *obd,
2682 struct obd_uuid *cluuid,
2683 struct obd_connect_data *data)
2688 if (exp == NULL || obd == NULL || cluuid == NULL)
2691 rc = filter_connect_internal(exp, data);
2696 /* nearly identical to mds_connect */
2697 static int filter_connect(const struct lu_env *env,
2698 struct lustre_handle *conn, struct obd_device *obd,
2699 struct obd_uuid *cluuid,
2700 struct obd_connect_data *data, void *localdata)
2702 struct lvfs_run_ctxt saved;
2703 struct obd_export *exp;
2704 struct filter_export_data *fed;
2705 struct lsd_client_data *lcd = NULL;
2710 if (conn == NULL || obd == NULL || cluuid == NULL)
2713 rc = class_connect(conn, obd, cluuid);
2716 exp = class_conn2export(conn);
2717 LASSERT(exp != NULL);
2719 fed = &exp->exp_filter_data;
2721 rc = filter_connect_internal(exp, data);
2725 filter_export_stats_init(obd, exp, localdata);
2726 if (obd->obd_replayable) {
2727 OBD_ALLOC(lcd, sizeof(*lcd));
2729 CERROR("filter: out of memory for client data\n");
2730 GOTO(cleanup, rc = -ENOMEM);
2733 memcpy(lcd->lcd_uuid, cluuid, sizeof(lcd->lcd_uuid));
2735 rc = filter_client_add(obd, exp, -1);
2740 group = data->ocd_group;
2744 CWARN("%s: Received MDS connection ("LPX64"); group %d\n",
2745 obd->obd_name, exp->exp_handle.h_cookie, group);
2747 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
2748 rc = filter_read_groups(obd, group, 1);
2749 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
2751 CERROR("can't read group %u\n", group);
2761 fed->fed_lcd = NULL;
2763 class_disconnect(exp);
2765 class_export_put(exp);
2771 /* Do extra sanity checks for grant accounting. We do this at connect,
2772 * disconnect, and statfs RPC time, so it shouldn't be too bad. We can
2773 * always get rid of it or turn it off when we know accounting is good. */
2774 static void filter_grant_sanity_check(struct obd_device *obd, const char *func)
2776 struct filter_export_data *fed;
2777 struct obd_export *exp;
2778 obd_size maxsize = obd->obd_osfs.os_blocks * obd->obd_osfs.os_bsize;
2779 obd_size tot_dirty = 0, tot_pending = 0, tot_granted = 0;
2780 obd_size fo_tot_dirty, fo_tot_pending, fo_tot_granted;
2782 if (list_empty(&obd->obd_exports))
2785 /* We don't want to do this for large machines that do lots of
2786 mounts or unmounts. It burns... */
2787 if (obd->obd_num_exports > 100)
2790 spin_lock(&obd->obd_osfs_lock);
2791 spin_lock(&obd->obd_dev_lock);
2792 list_for_each_entry(exp, &obd->obd_exports, exp_obd_chain) {
2794 fed = &exp->exp_filter_data;
2795 if (fed->fed_grant < 0 || fed->fed_pending < 0 ||
2798 if (maxsize > 0) { /* we may not have done a statfs yet */
2799 LASSERTF(fed->fed_grant + fed->fed_pending <= maxsize,
2800 "%s: cli %s/%p %ld+%ld > "LPU64"\n", func,
2801 exp->exp_client_uuid.uuid, exp,
2802 fed->fed_grant, fed->fed_pending, maxsize);
2803 LASSERTF(fed->fed_dirty <= maxsize,
2804 "%s: cli %s/%p %ld > "LPU64"\n", func,
2805 exp->exp_client_uuid.uuid, exp,
2806 fed->fed_dirty, maxsize);
2809 CERROR("%s: cli %s/%p dirty %ld pend %ld grant %ld\n",
2810 obd->obd_name, exp->exp_client_uuid.uuid, exp,
2811 fed->fed_dirty, fed->fed_pending,fed->fed_grant);
2813 CDEBUG(D_CACHE, "%s: cli %s/%p dirty %ld pend %ld grant %ld\n",
2814 obd->obd_name, exp->exp_client_uuid.uuid, exp,
2815 fed->fed_dirty, fed->fed_pending,fed->fed_grant);
2816 tot_granted += fed->fed_grant + fed->fed_pending;
2817 tot_pending += fed->fed_pending;
2818 tot_dirty += fed->fed_dirty;
2820 fo_tot_granted = obd->u.filter.fo_tot_granted;
2821 fo_tot_pending = obd->u.filter.fo_tot_pending;
2822 fo_tot_dirty = obd->u.filter.fo_tot_dirty;
2823 spin_unlock(&obd->obd_dev_lock);
2824 spin_unlock(&obd->obd_osfs_lock);
2826 /* Do these assertions outside the spinlocks so we don't kill system */
2827 if (tot_granted != fo_tot_granted)
2828 CERROR("%s: tot_granted "LPU64" != fo_tot_granted "LPU64"\n",
2829 func, tot_granted, fo_tot_granted);
2830 if (tot_pending != fo_tot_pending)
2831 CERROR("%s: tot_pending "LPU64" != fo_tot_pending "LPU64"\n",
2832 func, tot_pending, fo_tot_pending);
2833 if (tot_dirty != fo_tot_dirty)
2834 CERROR("%s: tot_dirty "LPU64" != fo_tot_dirty "LPU64"\n",
2835 func, tot_dirty, fo_tot_dirty);
2836 if (tot_pending > tot_granted)
2837 CERROR("%s: tot_pending "LPU64" > tot_granted "LPU64"\n",
2838 func, tot_pending, tot_granted);
2839 if (tot_granted > maxsize)
2840 CERROR("%s: tot_granted "LPU64" > maxsize "LPU64"\n",
2841 func, tot_granted, maxsize);
2842 if (tot_dirty > maxsize)
2843 CERROR("%s: tot_dirty "LPU64" > maxsize "LPU64"\n",
2844 func, tot_dirty, maxsize);
2847 /* Remove this client from the grant accounting totals. We also remove
2848 * the export from the obd device under the osfs and dev locks to ensure
2849 * that the filter_grant_sanity_check() calculations are always valid.
2850 * The client should do something similar when it invalidates its import. */
2851 static void filter_grant_discard(struct obd_export *exp)
2853 struct obd_device *obd = exp->exp_obd;
2854 struct filter_obd *filter = &obd->u.filter;
2855 struct filter_export_data *fed = &exp->exp_filter_data;
2857 spin_lock(&obd->obd_osfs_lock);
2858 spin_lock(&obd->obd_dev_lock);
2859 list_del_init(&exp->exp_obd_chain);
2860 spin_unlock(&obd->obd_dev_lock);
2862 LASSERTF(filter->fo_tot_granted >= fed->fed_grant,
2863 "%s: tot_granted "LPU64" cli %s/%p fed_grant %ld\n",
2864 obd->obd_name, filter->fo_tot_granted,
2865 exp->exp_client_uuid.uuid, exp, fed->fed_grant);
2866 filter->fo_tot_granted -= fed->fed_grant;
2867 LASSERTF(filter->fo_tot_pending >= fed->fed_pending,
2868 "%s: tot_pending "LPU64" cli %s/%p fed_pending %ld\n",
2869 obd->obd_name, filter->fo_tot_pending,
2870 exp->exp_client_uuid.uuid, exp, fed->fed_pending);
2871 /* fo_tot_pending is handled in filter_grant_commit as bulk finishes */
2872 LASSERTF(filter->fo_tot_dirty >= fed->fed_dirty,
2873 "%s: tot_dirty "LPU64" cli %s/%p fed_dirty %ld\n",
2874 obd->obd_name, filter->fo_tot_dirty,
2875 exp->exp_client_uuid.uuid, exp, fed->fed_dirty);
2876 filter->fo_tot_dirty -= fed->fed_dirty;
2880 spin_unlock(&obd->obd_osfs_lock);
2883 static int filter_destroy_export(struct obd_export *exp)
2887 if (exp->exp_filter_data.fed_pending)
2888 CERROR("%s: cli %s/%p has %lu pending on destroyed export\n",
2889 exp->exp_obd->obd_name, exp->exp_client_uuid.uuid,
2890 exp, exp->exp_filter_data.fed_pending);
2892 /* Not ported yet the b1_6 quota functionality
2893 * lquota_clearinfo(filter_quota_interface_ref, exp, exp->exp_obd);
2896 target_destroy_export(exp);
2897 ldlm_destroy_export(exp);
2899 if (obd_uuid_equals(&exp->exp_client_uuid, &exp->exp_obd->obd_uuid))
2903 if (exp->exp_obd->obd_replayable)
2904 filter_client_free(exp);
2906 fsfilt_sync(exp->exp_obd, exp->exp_obd->u.obt.obt_sb);
2908 filter_grant_discard(exp);
2909 filter_fmd_cleanup(exp);
2911 if (!(exp->exp_flags & OBD_OPT_FORCE))
2912 filter_grant_sanity_check(exp->exp_obd, __FUNCTION__);
2917 static void filter_sync_llogs(struct obd_device *obd, struct obd_export *dexp)
2919 struct obd_llog_group *olg_min, *olg;
2920 struct filter_obd *filter;
2921 int worked = 0, group;
2922 struct llog_ctxt *ctxt;
2925 filter = &obd->u.filter;
2927 /* we can't sync log holding spinlock. also, we do not want to get
2928 * into livelock. so we do following: loop over MDS's exports in
2929 * group order and skip already synced llogs -bzzz */
2931 /* look for group with min. number, but > worked */
2934 spin_lock(&filter->fo_llog_list_lock);
2935 list_for_each_entry(olg, &filter->fo_llog_list, olg_list) {
2936 if (olg->olg_group <= worked) {
2937 /* this group is already synced */
2940 if (group < olg->olg_group) {
2941 /* we have group with smaller number to sync */
2944 /* store current minimal group */
2946 group = olg->olg_group;
2948 spin_unlock(&filter->fo_llog_list_lock);
2950 if (olg_min == NULL)
2953 worked = olg_min->olg_group;
2954 if (olg_min->olg_exp &&
2955 (dexp == olg_min->olg_exp || dexp == NULL)) {
2957 ctxt = llog_group_get_ctxt(olg_min,
2958 LLOG_MDS_OST_REPL_CTXT);
2959 LASSERT(ctxt != NULL);
2960 err = llog_sync(ctxt, olg_min->olg_exp);
2961 llog_ctxt_put(ctxt);
2963 CERROR("error flushing logs to MDS: rc %d\n",
2966 } while (olg_min != NULL);
2969 /* also incredibly similar to mds_disconnect */
2970 static int filter_disconnect(struct obd_export *exp)
2972 struct obd_device *obd = exp->exp_obd;
2977 class_export_get(exp);
2979 if (!(exp->exp_flags & OBD_OPT_FORCE))
2980 filter_grant_sanity_check(obd, __FUNCTION__);
2981 filter_grant_discard(exp);
2983 /* Disconnect early so that clients can't keep using export */
2984 rc = class_disconnect(exp);
2985 if (exp->exp_obd->obd_namespace != NULL)
2986 ldlm_cancel_locks_for_export(exp);
2988 fsfilt_sync(obd, obd->u.obt.obt_sb);
2990 lprocfs_exp_cleanup(exp);
2992 /* flush any remaining cancel messages out to the target */
2993 filter_sync_llogs(obd, exp);
2994 class_export_put(exp);
2998 /* reverse import is changed, sync all cancels */
2999 static void filter_revimp_update(struct obd_export *exp)
3004 class_export_get(exp);
3006 /* flush any remaining cancel messages out to the target */
3007 filter_sync_llogs(exp->exp_obd, exp);
3008 class_export_put(exp);
3012 static int filter_ping(struct obd_export *exp)
3014 filter_fmd_expire(exp);
3019 struct dentry *__filter_oa2dentry(struct obd_device *obd, struct obdo *oa,
3020 const char *what, int quiet)
3022 struct dentry *dchild = NULL;
3025 if (oa->o_valid & OBD_MD_FLGROUP)
3028 dchild = filter_fid2dentry(obd, NULL, group, oa->o_id);
3030 if (IS_ERR(dchild)) {
3031 CERROR("%s error looking up object: "LPU64":"LPU64"\n",
3032 what, group, oa->o_id);
3036 if (dchild->d_inode == NULL) {
3038 CERROR("%s: %s on non-existent object: "LPU64"\n",
3039 obd->obd_name, what, oa->o_id);
3041 RETURN(ERR_PTR(-ENOENT));
3047 static int filter_getattr(struct obd_export *exp, struct obd_info *oinfo)
3049 struct dentry *dentry = NULL;
3050 struct obd_device *obd;
3054 rc = filter_auth_capa(exp, NULL, oinfo_mdsno(oinfo),
3055 oinfo_capa(oinfo), CAPA_OPC_META_READ);
3059 obd = class_exp2obd(exp);
3061 CDEBUG(D_IOCTL, "invalid client export %p\n", exp);
3065 dentry = filter_oa2dentry(obd, oinfo->oi_oa);
3067 RETURN(PTR_ERR(dentry));
3069 /* Limit the valid bits in the return data to what we actually use */
3070 oinfo->oi_oa->o_valid = OBD_MD_FLID;
3071 obdo_from_inode(oinfo->oi_oa, dentry->d_inode, FILTER_VALID_FLAGS);
3077 /* this should be enabled/disabled in condition to enabled/disabled large
3078 * inodes (fast EAs) in backing store FS. */
3079 int filter_update_fidea(struct obd_export *exp, struct inode *inode,
3080 void *handle, struct obdo *oa)
3082 struct obd_device *obd = exp->exp_obd;
3086 if (oa->o_valid & OBD_MD_FLFID) {
3087 struct filter_fid ff;
3089 if (!(oa->o_valid & OBD_MD_FLGROUP))
3091 /* packing fid and converting it to LE for storing into EA.
3092 * Here ->o_stripe_idx should be filled by LOV and rest of
3093 * fields - by client. */
3094 ff.ff_fid.id = cpu_to_le64(oa->o_fid);
3095 ff.ff_fid.f_type = cpu_to_le32(oa->o_stripe_idx);
3096 ff.ff_fid.generation = cpu_to_le32(oa->o_generation);
3097 ff.ff_objid = cpu_to_le64(oa->o_id);
3098 ff.ff_group = cpu_to_le64(oa->o_gr);
3100 CDEBUG(D_INODE, "storing filter fid EA ("LPU64"/%u/%u"
3101 LPU64"/"LPU64")\n", oa->o_fid, oa->o_stripe_idx,
3102 oa->o_generation, oa->o_id, oa->o_gr);
3104 rc = fsfilt_set_md(obd, inode, handle, &ff, sizeof(ff), "fid");
3106 CERROR("store fid in object failed! rc: %d\n", rc);
3108 CDEBUG(D_HA, "OSS object without fid info!\n");
3114 /* this is called from filter_truncate() until we have filter_punch() */
3115 int filter_setattr_internal(struct obd_export *exp, struct dentry *dentry,
3116 struct obdo *oa, struct obd_trans_info *oti)
3118 unsigned int orig_ids[MAXQUOTAS] = {0, 0};
3119 struct llog_cookie *fcc = NULL;
3120 struct filter_obd *filter;
3121 int rc, err, locked = 0, sync = 0;
3122 unsigned int ia_valid;
3123 struct inode *inode;
3128 LASSERT(dentry != NULL);
3129 LASSERT(!IS_ERR(dentry));
3131 inode = dentry->d_inode;
3132 LASSERT(inode != NULL);
3134 filter = &exp->exp_obd->u.filter;
3135 iattr_from_obdo(&iattr, oa, oa->o_valid);
3136 ia_valid = iattr.ia_valid;
3138 if (oa->o_valid & OBD_MD_FLCOOKIE) {
3139 OBD_ALLOC(fcc, sizeof(*fcc));
3141 *fcc = oa->o_lcookie;
3144 if (ia_valid & ATTR_SIZE || ia_valid & (ATTR_UID | ATTR_GID)) {
3146 LOCK_INODE_MUTEX(inode);
3150 /* If the inode still has SUID+SGID bits set (see filter_precreate())
3151 * then we will accept the UID+GID sent by the client during write for
3152 * initializing the ownership of this inode. We only allow this to
3153 * happen once so clear these bits in setattr. In 2.6 kernels it is
3154 * possible to get ATTR_UID and ATTR_GID separately, so we only clear
3155 * the flags that are actually being set. */
3156 if (ia_valid & (ATTR_UID | ATTR_GID)) {
3157 CDEBUG(D_INODE, "update UID/GID to %lu/%lu\n",
3158 (unsigned long)oa->o_uid, (unsigned long)oa->o_gid);
3160 if ((inode->i_mode & S_ISUID) && (ia_valid & ATTR_UID)) {
3161 if (!(ia_valid & ATTR_MODE)) {
3162 iattr.ia_mode = inode->i_mode;
3163 iattr.ia_valid |= ATTR_MODE;
3165 iattr.ia_mode &= ~S_ISUID;
3167 if ((inode->i_mode & S_ISGID) && (ia_valid & ATTR_GID)) {
3168 if (!(iattr.ia_valid & ATTR_MODE)) {
3169 iattr.ia_mode = inode->i_mode;
3170 iattr.ia_valid |= ATTR_MODE;
3172 iattr.ia_mode &= ~S_ISGID;
3175 orig_ids[USRQUOTA] = inode->i_uid;
3176 orig_ids[GRPQUOTA] = inode->i_gid;
3177 handle = fsfilt_start_log(exp->exp_obd, inode,
3178 FSFILT_OP_SETATTR, oti, 1);
3180 GOTO(out_unlock, rc = PTR_ERR(handle));
3182 /* update inode EA only once when inode is suid bit marked. As
3183 * on 2.6.x UID and GID may be set separately, we check here
3184 * only one of them to avoid double setting. */
3185 if (inode->i_mode & S_ISUID)
3186 filter_update_fidea(exp, inode, handle, oa);
3188 handle = fsfilt_start(exp->exp_obd, inode,
3189 FSFILT_OP_SETATTR, oti);
3191 GOTO(out_unlock, rc = PTR_ERR(handle));
3193 if (oa->o_valid & OBD_MD_FLFLAGS) {
3194 rc = fsfilt_iocontrol(exp->exp_obd, inode, NULL,
3195 EXT3_IOC_SETFLAGS, (long)&oa->o_flags);
3197 rc = fsfilt_setattr(exp->exp_obd, dentry, handle, &iattr, 1);
3199 /* set cancel cookie callback function */
3200 sync = fsfilt_add_journal_cb(exp->exp_obd, 0, handle,
3201 filter_cancel_cookies_cb,
3205 if (OBD_FAIL_CHECK(OBD_FAIL_OST_SETATTR_CREDITS))
3206 fsfilt_extend(exp->exp_obd, inode, 0, handle);
3208 /* The truncate might have used up our transaction credits. Make
3209 * sure we have one left for the last_rcvd update. */
3210 err = fsfilt_extend(exp->exp_obd, inode, 1, handle);
3212 rc = filter_finish_transno(exp, oti, rc, sync);
3214 filter_cancel_cookies_cb(exp->exp_obd, 0, fcc, rc);
3218 err = fsfilt_commit(exp->exp_obd, inode, handle, 0);
3220 CERROR("error on commit, err = %d\n", err);
3228 /* truncate can leave dirty pages in the cache.
3229 * we'll take care of them in write path -bzzz */
3230 UNLOCK_INODE_MUTEX(inode);
3237 UNLOCK_INODE_MUTEX(inode);
3240 OBD_FREE(fcc, sizeof(*fcc));
3242 /* trigger quota release */
3243 if (ia_valid & (ATTR_SIZE | ATTR_UID | ATTR_GID)) {
3244 unsigned int cur_ids[MAXQUOTAS] = {oa->o_uid, oa->o_gid};
3245 int rc2 = lquota_adjust(filter_quota_interface_ref,
3246 exp->exp_obd, cur_ids,
3247 orig_ids, rc, FSFILT_OP_SETATTR);
3248 CDEBUG(rc2 ? D_ERROR : D_QUOTA,
3249 "filter adjust qunit. (rc:%d)\n", rc2);
3254 /* this is called from filter_truncate() until we have filter_punch() */
3255 int filter_setattr(struct obd_export *exp, struct obd_info *oinfo,
3256 struct obd_trans_info *oti)
3258 struct ldlm_res_id res_id;
3259 struct filter_mod_data *fmd;
3260 struct lvfs_run_ctxt saved;
3261 struct filter_obd *filter;
3262 struct ldlm_resource *res;
3263 struct dentry *dentry;
3267 osc_build_res_name(oinfo->oi_oa->o_id, oinfo->oi_oa->o_gr, &res_id);
3268 rc = filter_auth_capa(exp, NULL, oinfo_mdsno(oinfo),
3269 oinfo_capa(oinfo), CAPA_OPC_META_WRITE);
3273 /* This would be very bad - accidentally truncating a file when
3274 * changing the time or similar - bug 12203. */
3275 if (oinfo->oi_oa->o_valid & OBD_MD_FLSIZE &&
3276 oinfo->oi_policy.l_extent.end != OBD_OBJECT_EOF) {
3277 static char mdsinum[48];
3279 if (oinfo->oi_oa->o_valid & OBD_MD_FLFID)
3280 snprintf(mdsinum, sizeof(mdsinum) - 1,
3281 " of inode "LPU64"/%u", oinfo->oi_oa->o_fid,
3282 oinfo->oi_oa->o_generation);
3286 CERROR("%s: setattr from %s trying to truncate objid "LPU64
3288 exp->exp_obd->obd_name, obd_export_nid2str(exp),
3289 oinfo->oi_oa->o_id, mdsinum);
3293 dentry = __filter_oa2dentry(exp->exp_obd, oinfo->oi_oa,
3296 RETURN(PTR_ERR(dentry));
3298 filter = &exp->exp_obd->u.filter;
3299 push_ctxt(&saved, &exp->exp_obd->obd_lvfs_ctxt, NULL);
3302 if (oinfo->oi_oa->o_valid &
3303 (OBD_MD_FLMTIME | OBD_MD_FLATIME | OBD_MD_FLCTIME)) {
3304 fmd = filter_fmd_get(exp,oinfo->oi_oa->o_id,oinfo->oi_oa->o_gr);
3305 if (fmd && fmd->fmd_mactime_xid < oti->oti_xid)
3306 fmd->fmd_mactime_xid = oti->oti_xid;
3307 filter_fmd_put(exp, fmd);
3310 /* setting objects attributes (including owner/group) */
3311 rc = filter_setattr_internal(exp, dentry, oinfo->oi_oa, oti);
3313 GOTO(out_unlock, rc);
3315 res = ldlm_resource_get(exp->exp_obd->obd_namespace, NULL,
3316 &res_id, LDLM_EXTENT, 0);
3319 LDLM_RESOURCE_ADDREF(res);
3320 rc = ldlm_res_lvbo_update(res, NULL, 0, 0);
3321 LDLM_RESOURCE_DELREF(res);
3322 ldlm_resource_putref(res);
3325 oinfo->oi_oa->o_valid = OBD_MD_FLID;
3327 /* Quota release need uid/gid info */
3328 obdo_from_inode(oinfo->oi_oa, dentry->d_inode,
3329 FILTER_VALID_FLAGS | OBD_MD_FLUID | OBD_MD_FLGID);
3335 pop_ctxt(&saved, &exp->exp_obd->obd_lvfs_ctxt, NULL);
3339 /* XXX identical to osc_unpackmd */
3340 static int filter_unpackmd(struct obd_export *exp, struct lov_stripe_md **lsmp,
3341 struct lov_mds_md *lmm, int lmm_bytes)
3347 if (lmm_bytes < sizeof (*lmm)) {
3348 CERROR("lov_mds_md too small: %d, need %d\n",
3349 lmm_bytes, (int)sizeof(*lmm));
3352 /* XXX LOV_MAGIC etc check? */
3354 if (lmm->lmm_object_id == cpu_to_le64(0)) {
3355 CERROR("lov_mds_md: zero lmm_object_id\n");
3360 lsm_size = lov_stripe_md_size(1);
3364 if (*lsmp != NULL && lmm == NULL) {
3365 OBD_FREE((*lsmp)->lsm_oinfo[0], sizeof(struct lov_oinfo));
3366 OBD_FREE(*lsmp, lsm_size);
3371 if (*lsmp == NULL) {
3372 OBD_ALLOC(*lsmp, lsm_size);
3376 OBD_ALLOC((*lsmp)->lsm_oinfo[0], sizeof(struct lov_oinfo));
3377 if ((*lsmp)->lsm_oinfo[0] == NULL) {
3378 OBD_FREE(*lsmp, lsm_size);
3381 loi_init((*lsmp)->lsm_oinfo[0]);
3385 /* XXX zero *lsmp? */
3386 (*lsmp)->lsm_object_id = le64_to_cpu (lmm->lmm_object_id);
3387 LASSERT((*lsmp)->lsm_object_id);
3390 (*lsmp)->lsm_maxbytes = LUSTRE_STRIPE_MAXBYTES;
3395 /* caller must hold fo_create_locks[oa->o_gr] */
3396 static int filter_destroy_precreated(struct obd_export *exp, struct obdo *oa,
3397 struct filter_obd *filter)
3399 struct obdo doa; /* XXX obdo on stack */
3405 LASSERT(oa->o_gr != 0);
3406 LASSERT(oa->o_valid & OBD_MD_FLGROUP);
3407 LASSERT(down_trylock(&filter->fo_create_locks[oa->o_gr]) != 0);
3409 memset(&doa, 0, sizeof(doa));
3411 doa.o_valid |= OBD_MD_FLGROUP;
3412 doa.o_gr = oa->o_gr;
3413 doa.o_mode = S_IFREG;
3415 if (!test_bit(doa.o_gr, &filter->fo_destroys_in_progress)) {
3416 CERROR("%s:["LPU64"] destroys_in_progress already cleared\n",
3417 exp->exp_obd->obd_name, doa.o_gr);
3421 last = filter_last_id(filter, doa.o_gr);
3423 CWARN("%s: deleting orphan objects from "LPU64" to "LPU64"\n",
3424 exp->exp_obd->obd_name, oa->o_id + 1, last);
3426 for (id = last; id > oa->o_id; id--) {
3428 rc = filter_destroy(exp, &doa, NULL, NULL, NULL);
3429 if (rc && rc != -ENOENT) /* this is pretty fatal... */
3430 CEMERG("error destroying precreate objid "LPU64": %d\n",
3432 filter_set_last_id(filter, id - 1, doa.o_gr);
3433 /* update last_id on disk periodically so that if we restart
3434 * we don't need to re-scan all of the just-deleted objects. */
3435 if ((id & 511) == 0)
3436 filter_update_last_objid(exp->exp_obd, doa.o_gr, 0);
3439 CDEBUG(D_HA, "%s: after destroy: set last_objids["LPU64"] = "LPU64"\n",
3440 exp->exp_obd->obd_name, doa.o_gr, oa->o_id);
3442 rc = filter_update_last_objid(exp->exp_obd, doa.o_gr, 1);
3443 clear_bit(doa.o_gr, &filter->fo_destroys_in_progress);
3448 static int filter_precreate(struct obd_device *obd, struct obdo *oa,
3449 obd_gr group, int *num);
3450 /* returns a negative error or a nonnegative number of files to create */
3451 static int filter_handle_precreate(struct obd_export *exp, struct obdo *oa,
3452 obd_gr group, struct obd_trans_info *oti)
3454 struct obd_device *obd = exp->exp_obd;
3455 struct filter_obd *filter = &obd->u.filter;
3459 /* delete orphans request */
3460 if ((oa->o_valid & OBD_MD_FLFLAGS) && (oa->o_flags & OBD_FL_DELORPHAN)){
3461 if (oti->oti_conn_cnt < exp->exp_conn_cnt) {
3462 CERROR("%s: dropping old orphan cleanup request\n",
3466 /* This causes inflight precreates to abort and drop lock */
3467 set_bit(group, &filter->fo_destroys_in_progress);
3468 down(&filter->fo_create_locks[group]);
3469 if (!test_bit(group, &filter->fo_destroys_in_progress)) {
3470 CERROR("%s:["LPU64"] destroys_in_progress already cleared\n",
3471 exp->exp_obd->obd_name, group);
3472 up(&filter->fo_create_locks[group]);
3475 diff = oa->o_id - filter_last_id(filter, group);
3476 CDEBUG(D_HA, "filter_last_id() = "LPU64" -> diff = %d\n",
3477 filter_last_id(filter, group), diff);
3479 if (-diff > OST_MAX_PRECREATE) {
3480 CERROR("%s: ignoring bogus orphan destroy request: "
3481 "obdid "LPU64" last_id "LPU64"\n", obd->obd_name,
3482 oa->o_id, filter_last_id(filter, group));
3483 /* FIXME: should reset precreate_next_id on MDS */
3484 GOTO(out, rc = -EINVAL);
3487 rc = filter_destroy_precreated(exp, oa, filter);
3489 CERROR("%s: unable to write lastobjid, but "
3490 "orphans were deleted\n", obd->obd_name);
3493 /* XXX: Used by MDS for the first time! */
3494 clear_bit(group, &filter->fo_destroys_in_progress);
3497 down(&filter->fo_create_locks[group]);
3498 if (oti->oti_conn_cnt < exp->exp_conn_cnt) {
3499 CERROR("%s: dropping old precreate request\n",
3503 /* only precreate if group == 0 and o_id is specified */
3504 if (group < FILTER_GROUP_MDS0 || oa->o_id == 0)
3507 diff = oa->o_id - filter_last_id(filter, group);
3508 CDEBUG(D_RPCTRACE, "filter_last_id() = "LPU64" -> diff = %d\n",
3509 filter_last_id(filter, group), diff);
3511 LASSERTF(diff >= 0,"%s: "LPU64" - "LPU64" = %d\n",obd->obd_name,
3512 oa->o_id, filter_last_id(filter, group), diff);
3516 oa->o_id = filter_last_id(&obd->u.filter, group);
3517 rc = filter_precreate(obd, oa, group, &diff);
3518 oa->o_id = filter_last_id(&obd->u.filter, group);
3520 oa->o_valid = OBD_MD_FLID | OBD_MD_FLGROUP;
3523 /* else diff == 0 */
3526 up(&filter->fo_create_locks[group]);
3530 static int filter_statfs(struct obd_device *obd, struct obd_statfs *osfs,
3531 __u64 max_age, __u32 flags)
3533 struct filter_obd *filter = &obd->u.filter;
3534 int blockbits = obd->u.obt.obt_sb->s_blocksize_bits;
3538 /* at least try to account for cached pages. its still racey and
3539 * might be under-reporting if clients haven't announced their
3540 * caches with brw recently */
3541 spin_lock(&obd->obd_osfs_lock);
3542 rc = fsfilt_statfs(obd, obd->u.obt.obt_sb, max_age);
3543 memcpy(osfs, &obd->obd_osfs, sizeof(*osfs));
3544 spin_unlock(&obd->obd_osfs_lock);
3546 CDEBUG(D_SUPER | D_CACHE, "blocks cached "LPU64" granted "LPU64
3547 " pending "LPU64" free "LPU64" avail "LPU64"\n",
3548 filter->fo_tot_dirty, filter->fo_tot_granted,
3549 filter->fo_tot_pending,
3550 osfs->os_bfree << blockbits, osfs->os_bavail << blockbits);
3552 filter_grant_sanity_check(obd, __FUNCTION__);
3554 osfs->os_bavail -= min(osfs->os_bavail, GRANT_FOR_LLOG(obd) +
3555 ((filter->fo_tot_dirty + filter->fo_tot_pending +
3556 osfs->os_bsize - 1) >> blockbits));
3558 /* set EROFS to state field if FS is mounted as RDONLY. The goal is to
3559 * stop creating files on MDS if OST is not good shape to create
3561 osfs->os_state = (filter->fo_obt.obt_sb->s_flags & MS_RDONLY) ?
3566 static int filter_use_existing_obj(struct obd_device *obd,
3567 struct dentry *dchild, void **handle,
3570 struct inode *inode = dchild->d_inode;
3574 if ((inode->i_mode & (S_ISUID | S_ISGID)) == (S_ISUID|S_ISGID))
3577 *handle = fsfilt_start_log(obd, inode, FSFILT_OP_SETATTR, NULL, 1);
3578 if (IS_ERR(*handle))
3579 return PTR_ERR(*handle);
3581 iattr.ia_valid = ATTR_MODE;
3582 iattr.ia_mode = S_ISUID | S_ISGID |0666;
3583 rc = fsfilt_setattr(obd, dchild, *handle, &iattr, 1);
3591 /* We rely on the fact that only one thread will be creating files in a given
3592 * group at a time, which is why we don't need an atomic filter_get_new_id.
3593 * Even if we had that atomic function, the following race would exist:
3595 * thread 1: gets id x from filter_next_id
3596 * thread 2: gets id (x + 1) from filter_next_id
3597 * thread 2: creates object (x + 1)
3598 * thread 1: tries to create object x, gets -ENOSPC
3600 * Caller must hold fo_create_locks[group]
3602 static int filter_precreate(struct obd_device *obd, struct obdo *oa,
3603 obd_gr group, int *num)
3605 struct dentry *dchild = NULL, *dparent = NULL;
3606 struct filter_obd *filter;
3607 struct obd_statfs *osfs;
3608 int err = 0, rc = 0, recreate_obj = 0, i;
3609 cfs_time_t enough_time = cfs_time_shift(DISK_TIMEOUT/2);
3611 void *handle = NULL;
3614 filter = &obd->u.filter;
3616 LASSERT(down_trylock(&filter->fo_create_locks[group]) != 0);
3618 OBD_FAIL_TIMEOUT(OBD_FAIL_TGT_DELAY_PRECREATE, obd_timeout / 2);
3620 if ((oa->o_valid & OBD_MD_FLFLAGS) &&
3621 (oa->o_flags & OBD_FL_RECREATE_OBJS)) {
3624 OBD_ALLOC(osfs, sizeof(*osfs));
3627 rc = filter_statfs(obd, osfs, cfs_time_current_64() - HZ, 0);
3628 if (rc == 0 && osfs->os_bavail < (osfs->os_blocks >> 10)) {
3629 CDEBUG(D_RPCTRACE,"%s: not enough space for create "
3630 LPU64"\n", obd->obd_name, osfs->os_bavail <<
3631 filter->fo_vfsmnt->mnt_sb->s_blocksize_bits);
3635 OBD_FREE(osfs, sizeof(*osfs));
3640 CDEBUG(D_RPCTRACE, "%s: precreating %d objects in group "LPU64
3641 " at "LPU64"\n", obd->obd_name, *num, group, oa->o_id);
3643 for (i = 0; i < *num && err == 0; i++) {
3644 int cleanup_phase = 0;
3646 if (test_bit(group, &filter->fo_destroys_in_progress)) {
3647 CWARN("%s: create aborted by destroy\n",
3656 last_id = filter_last_id(filter, group);
3657 if (next_id > last_id) {
3658 CERROR("Error: Trying to recreate obj greater"
3659 "than last id "LPD64" > "LPD64"\n",
3661 GOTO(cleanup, rc = -EINVAL);
3664 next_id = filter_last_id(filter, group) + 1;
3666 CDEBUG(D_INFO, "precreate objid "LPU64"\n", next_id);
3668 dparent = filter_parent_lock(obd, group, next_id);
3669 if (IS_ERR(dparent))
3670 GOTO(cleanup, rc = PTR_ERR(dparent));
3671 cleanup_phase = 1; /* filter_parent_unlock(dparent) */
3673 dchild = filter_fid2dentry(obd, dparent, group, next_id);
3675 GOTO(cleanup, rc = PTR_ERR(dchild));
3676 cleanup_phase = 2; /* f_dput(dchild) */
3678 if (dchild->d_inode != NULL) {
3679 /* This would only happen if lastobjid was bad on disk*/
3680 /* Could also happen if recreating missing obj but it
3681 * already exists. */
3683 CERROR("%s: recreating existing object %.*s?\n",
3684 obd->obd_name, dchild->d_name.len,
3685 dchild->d_name.name);
3687 /* Use these existing objects if they are
3689 if (dchild->d_inode->i_size == 0) {
3690 rc = filter_use_existing_obj(obd,dchild,
3691 &handle, &cleanup_phase);
3698 CERROR("%s: Serious error: objid %.*s already "
3699 "exists; is this filesystem corrupt?\n",
3700 obd->obd_name, dchild->d_name.len,
3701 dchild->d_name.name);
3704 GOTO(cleanup, rc = -EEXIST);
3707 handle = fsfilt_start_log(obd, dparent->d_inode,
3708 FSFILT_OP_CREATE, NULL, 1);
3710 GOTO(cleanup, rc = PTR_ERR(handle));
3713 /* We mark object SUID+SGID to flag it for accepting UID+GID
3714 * from client on first write. Currently the permission bits
3715 * on the OST are never used, so this is OK. */
3716 rc = ll_vfs_create(dparent->d_inode, dchild,
3717 S_IFREG | S_ISUID | S_ISGID | 0666, NULL);
3719 CERROR("create failed rc = %d\n", rc);
3724 if (!recreate_obj) {
3725 filter_set_last_id(filter, next_id, group);
3726 err = filter_update_last_objid(obd, group, 0);
3728 CERROR("unable to write lastobjid "
3729 "but file created\n");
3733 switch(cleanup_phase) {
3735 err = fsfilt_commit(obd, dparent->d_inode, handle, 0);
3737 CERROR("error on commit, err = %d\n", err);
3744 filter_parent_unlock(dparent);
3751 if (time_after(jiffies, enough_time)) {
3753 "%s: precreate slow - want %d got %d \n",
3754 obd->obd_name, *num, i);
3761 "%s: created %d objects for group "LPU64": "LPU64" rc %d\n",
3762 obd->obd_name, i, group, filter->fo_last_objids[group], rc);
3767 static int filter_create(struct obd_export *exp, struct obdo *oa,
3768 struct lov_stripe_md **ea, struct obd_trans_info *oti)
3770 struct filter_export_data *fed;
3771 struct obd_device *obd = NULL;
3772 struct filter_obd *filter;
3773 struct lvfs_run_ctxt saved;
3774 struct lov_stripe_md *lsm = NULL;
3775 int rc = 0, diff, group = oa->o_gr;
3778 if (!(oa->o_valid & OBD_MD_FLGROUP) || group == 0) {
3779 CERROR("!!! nid %s sent invalid object group %d\n",
3780 obd_export_nid2str(exp), group);
3785 fed = &exp->exp_filter_data;
3786 filter = &obd->u.filter;
3788 if (fed->fed_group != group) {
3789 CERROR("!!! this export (nid %s) used object group %d "
3790 "earlier; now it's trying to use group %d! This could "
3791 "be a bug in the MDS. Please report to "
3792 "http://bugzilla.lustre.org/\n",
3793 obd_export_nid2str(exp), fed->fed_group, group);
3797 CDEBUG(D_INFO, "filter_create(od->o_gr="LPU64",od->o_id="LPU64")\n",
3798 oa->o_gr, oa->o_id);
3802 rc = obd_alloc_memmd(exp, &lsm);
3809 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
3811 if ((oa->o_valid & OBD_MD_FLFLAGS) &&
3812 (oa->o_flags & OBD_FL_RECREATE_OBJS)) {
3813 if (oa->o_id > filter_last_id(filter, oa->o_gr)) {
3814 CERROR("recreate objid "LPU64" > last id "LPU64"\n",
3815 oa->o_id, filter_last_id(filter,
3820 down(&filter->fo_create_locks[oa->o_gr]);
3821 rc = filter_precreate(obd, oa, oa->o_gr, &diff);
3822 up(&filter->fo_create_locks[oa->o_gr]);
3825 rc = filter_handle_precreate(exp, oa, oa->o_gr, oti);
3828 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
3829 if (rc && ea != NULL && *ea != lsm) {
3830 obd_free_memmd(exp, &lsm);
3831 } else if (rc == 0 && ea != NULL) {
3832 /* XXX LOV STACKING: the lsm that is passed to us from
3833 * LOV does not have valid lsm_oinfo data structs, so
3834 * don't go touching that. This needs to be fixed in a
3836 lsm->lsm_object_id = oa->o_id;
3843 int filter_destroy(struct obd_export *exp, struct obdo *oa,
3844 struct lov_stripe_md *md, struct obd_trans_info *oti,
3845 struct obd_export *md_exp)
3847 unsigned int qcids[MAXQUOTAS] = {0, 0};
3848 struct obd_device *obd;
3849 struct filter_obd *filter;
3850 struct dentry *dchild = NULL, *dparent = NULL;
3851 struct lvfs_run_ctxt saved;
3852 void *handle = NULL;
3853 struct llog_cookie *fcc = NULL;
3854 int rc, rc2, cleanup_phase = 0, sync = 0;
3858 LASSERT(oa->o_valid & OBD_MD_FLGROUP);
3861 filter = &obd->u.filter;
3863 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
3866 dchild = filter_fid2dentry(obd, NULL, oa->o_gr, oa->o_id);
3868 GOTO(cleanup, rc = PTR_ERR(dchild));
3871 if (dchild->d_inode == NULL) {
3872 CDEBUG(D_INODE, "destroying non-existent object "LPU64"\n",
3874 /* If object already gone, cancel cookie right now */
3875 if (oa->o_valid & OBD_MD_FLCOOKIE) {
3876 struct llog_ctxt *ctxt;
3877 struct obd_llog_group *olg;
3878 fcc = &oa->o_lcookie;
3879 olg = filter_find_olg(obd, oa->o_gr);
3881 CERROR(" %s: can not find olg of group %d\n",
3882 obd->obd_name, (int)oa->o_gr);
3883 GOTO(cleanup, rc = PTR_ERR(olg));
3885 llog_group_set_export(olg, exp);
3887 ctxt = llog_group_get_ctxt(olg, fcc->lgc_subsys + 1);
3888 llog_cancel(ctxt, NULL, 1, fcc, 0);
3889 llog_ctxt_put(ctxt);
3890 fcc = NULL; /* we didn't allocate fcc, don't free it */
3892 GOTO(cleanup, rc = -ENOENT);
3895 filter_prepare_destroy(obd, oa->o_id, oa->o_gr);
3897 /* Our MDC connection is established by the MDS to us */
3898 if (oa->o_valid & OBD_MD_FLCOOKIE) {
3899 OBD_ALLOC(fcc, sizeof(*fcc));
3901 *fcc = oa->o_lcookie;
3903 DQUOT_INIT(dchild->d_inode);
3905 /* we're gonna truncate it first in order to avoid possible deadlock:
3907 * open trasaction open transaction
3908 * down(i_zombie) down(i_zombie)
3909 * restart transaction
3910 * (see BUG 4180) -bzzz
3912 LOCK_INODE_MUTEX(dchild->d_inode);
3913 handle = fsfilt_start_log(obd, dchild->d_inode, FSFILT_OP_SETATTR,
3915 if (IS_ERR(handle)) {
3916 UNLOCK_INODE_MUTEX(dchild->d_inode);
3917 GOTO(cleanup, rc = PTR_ERR(handle));
3920 iattr.ia_valid = ATTR_SIZE;
3922 rc = fsfilt_setattr(obd, dchild, handle, &iattr, 1);
3923 rc2 = fsfilt_commit(obd, dchild->d_inode, handle, 0);
3924 UNLOCK_INODE_MUTEX(dchild->d_inode);
3928 GOTO(cleanup, rc = rc2);
3930 /* We don't actually need to lock the parent until we are unlinking
3931 * here, and not while truncating above. That avoids holding the
3932 * parent lock for a long time during truncate, which can block other
3933 * threads from doing anything to objects in that directory. bug 7171 */
3934 dparent = filter_parent_lock(obd, oa->o_gr, oa->o_id);
3935 if (IS_ERR(dparent))
3936 GOTO(cleanup, rc = PTR_ERR(dparent));
3937 cleanup_phase = 3; /* filter_parent_unlock */
3939 LOCK_INODE_MUTEX(dchild->d_inode);
3940 handle = fsfilt_start_log(obd, dparent->d_inode,FSFILT_OP_UNLINK,oti,1);
3941 if (IS_ERR(handle)) {
3942 UNLOCK_INODE_MUTEX(dchild->d_inode);
3943 GOTO(cleanup, rc = PTR_ERR(handle));
3945 cleanup_phase = 4; /* fsfilt_commit */
3947 /* Quota release need uid/gid of inode */
3948 obdo_from_inode(oa, dchild->d_inode, OBD_MD_FLUID|OBD_MD_FLGID);
3950 filter_fmd_drop(exp, oa->o_id, oa->o_gr);
3952 /* this drops dchild->d_inode->i_mutex unconditionally */
3953 rc = filter_destroy_internal(obd, oa->o_id, oa->o_gr, dparent, dchild);
3957 switch(cleanup_phase) {
3960 sync = fsfilt_add_journal_cb(obd, 0, oti ?
3961 oti->oti_handle : handle,
3962 filter_cancel_cookies_cb,
3964 /* If add_journal_cb failed, then filter_finish_transno
3965 * will commit the handle and we will do a sync
3966 * on commit. then we call callback directly to free
3969 rc = filter_finish_transno(exp, oti, rc, sync);
3971 filter_cancel_cookies_cb(obd, 0, fcc, rc);
3974 rc2 = fsfilt_commit(obd, dparent->d_inode, handle, 0);
3976 CERROR("error on commit, err = %d\n", rc2);
3983 filter_parent_unlock(dparent);
3987 OBD_FREE(fcc, sizeof(*fcc));
3989 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
3992 CERROR("invalid cleanup_phase %d\n", cleanup_phase);
3996 /* trigger quota release */
3997 qcids[USRQUOTA] = oa->o_uid;
3998 qcids[GRPQUOTA] = oa->o_gid;
3999 rc2 = lquota_adjust(filter_quota_interface_ref, obd, qcids, NULL, rc,
4003 CDEBUG(D_QUOTA, "filter adjust qunit! (rc:%d)\n", rc2);
4007 /* NB start and end are used for punch, but not truncate */
4008 static int filter_truncate(struct obd_export *exp, struct obd_info *oinfo,
4009 struct obd_trans_info *oti,
4010 struct ptlrpc_request_set *rqset)
4015 if (oinfo->oi_policy.l_extent.end != OBD_OBJECT_EOF) {
4016 CERROR("PUNCH not supported, only truncate: end = "LPX64"\n",
4017 oinfo->oi_policy.l_extent.end);
4021 CDEBUG(D_INODE, "calling truncate for object "LPU64", valid = "LPX64
4022 ", o_size = "LPD64"\n", oinfo->oi_oa->o_id,
4023 oinfo->oi_oa->o_valid, oinfo->oi_policy.l_extent.start);
4025 rc = filter_auth_capa(exp, NULL, oinfo_mdsno(oinfo),
4026 oinfo_capa(oinfo), CAPA_OPC_OSS_TRUNC);
4030 oinfo->oi_oa->o_size = oinfo->oi_policy.l_extent.start;
4031 rc = filter_setattr(exp, oinfo, oti);
4035 static int filter_sync(struct obd_export *exp, struct obdo *oa,
4036 struct lov_stripe_md *lsm, obd_off start, obd_off end,
4039 struct lvfs_run_ctxt saved;
4040 struct filter_obd *filter;
4041 struct dentry *dentry;
4045 rc = filter_auth_capa(exp, NULL, obdo_mdsno(oa),
4046 (struct lustre_capa *)capa, CAPA_OPC_OSS_WRITE);
4050 filter = &exp->exp_obd->u.filter;
4052 /* an objid of zero is taken to mean "sync whole filesystem" */
4053 if (!oa || !(oa->o_valid & OBD_MD_FLID)) {
4054 rc = fsfilt_sync(exp->exp_obd, filter->fo_obt.obt_sb);
4055 /* flush any remaining cancel messages out to the target */
4056 filter_sync_llogs(exp->exp_obd, exp);
4060 dentry = filter_oa2dentry(exp->exp_obd, oa);
4062 RETURN(PTR_ERR(dentry));
4064 push_ctxt(&saved, &exp->exp_obd->obd_lvfs_ctxt, NULL);
4066 LOCK_INODE_MUTEX(dentry->d_inode);
4068 rc = filemap_fdatawrite(dentry->d_inode->i_mapping);
4070 /* just any file to grab fsync method - "file" arg unused */
4071 struct file *file = filter->fo_rcvd_filp;
4073 if (file->f_op && file->f_op->fsync)
4074 rc = file->f_op->fsync(NULL, dentry, 1);
4076 rc2 = filemap_fdatawait(dentry->d_inode->i_mapping);
4080 UNLOCK_INODE_MUTEX(dentry->d_inode);
4082 oa->o_valid = OBD_MD_FLID;
4083 obdo_from_inode(oa, dentry->d_inode, FILTER_VALID_FLAGS);
4085 pop_ctxt(&saved, &exp->exp_obd->obd_lvfs_ctxt, NULL);
4091 static int filter_get_info(struct obd_export *exp, __u32 keylen,
4092 void *key, __u32 *vallen, void *val,
4093 struct lov_stripe_md *lsm)
4095 struct obd_device *obd;
4098 obd = class_exp2obd(exp);
4100 CDEBUG(D_IOCTL, "invalid client export %p\n", exp);
4104 if (KEY_IS(KEY_BLOCKSIZE)) {
4105 __u32 *blocksize = val;
4107 if (*vallen < sizeof(*blocksize))
4109 *blocksize = obd->u.obt.obt_sb->s_blocksize;
4111 *vallen = sizeof(*blocksize);
4115 if (KEY_IS(KEY_BLOCKSIZE_BITS)) {
4116 __u32 *blocksize_bits = val;
4117 if (blocksize_bits) {
4118 if (*vallen < sizeof(*blocksize_bits))
4120 *blocksize_bits = obd->u.obt.obt_sb->s_blocksize_bits;
4122 *vallen = sizeof(*blocksize_bits);
4126 if (KEY_IS(KEY_LAST_ID)) {
4127 obd_id *last_id = val;
4128 /* FIXME: object groups */
4130 if (*vallen < sizeof(*last_id))
4132 *last_id = filter_last_id(&obd->u.filter,
4133 exp->exp_filter_data.fed_group);
4135 *vallen = sizeof(*last_id);
4139 if (KEY_IS(KEY_FIEMAP)) {
4140 struct ll_fiemap_info_key *fm_key = key;
4141 struct dentry *dentry;
4142 struct ll_user_fiemap *fiemap = val;
4143 struct lvfs_run_ctxt saved;
4146 if (fiemap == NULL) {
4147 *vallen = fiemap_count_to_size(
4148 fm_key->fiemap.fm_extent_count);
4152 dentry = __filter_oa2dentry(exp->exp_obd, &fm_key->oa,
4155 RETURN(PTR_ERR(dentry));
4157 memcpy(fiemap, &fm_key->fiemap, sizeof(*fiemap));
4158 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
4159 rc = fsfilt_iocontrol(obd, dentry->d_inode, NULL,
4160 EXT3_IOC_FIEMAP, (long)fiemap);
4165 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
4171 CDEBUG(D_IOCTL, "invalid key\n");
4175 static int filter_set_info_async(struct obd_export *exp, __u32 keylen,
4176 void *key, __u32 vallen, void *val,
4177 struct ptlrpc_request_set *set)
4179 struct obd_device *obd;
4180 struct obd_llog_group *olg;
4181 struct llog_ctxt *ctxt;
4187 CDEBUG(D_IOCTL, "invalid export %p\n", exp);
4191 if (KEY_IS(KEY_CAPA_KEY)) {
4192 rc = filter_update_capa_key(obd, (struct lustre_capa_key *)val);
4194 CERROR("filter update capability key failed: %d\n", rc);
4198 if (KEY_IS(KEY_REVIMP_UPD)) {
4199 filter_revimp_update(exp);
4203 if (!KEY_IS(KEY_MDS_CONN))
4206 LCONSOLE_WARN("%s: received MDS connection from %s\n", obd->obd_name,
4207 obd_export_nid2str(exp));
4208 obd->u.filter.fo_mdc_conn.cookie = exp->exp_handle.h_cookie;
4210 /* setup llog imports */
4211 LASSERT(val != NULL);
4212 group = (int)(*(__u32 *)val);
4213 LASSERT(group >= FILTER_GROUP_MDS0);
4215 olg = filter_find_create_olg(obd, group);
4217 RETURN(PTR_ERR(olg));
4219 llog_group_set_export(olg, exp);
4221 ctxt = llog_group_get_ctxt(olg, LLOG_MDS_OST_REPL_CTXT);
4222 LASSERTF(ctxt != NULL, "ctxt is null\n");
4224 rc = llog_receptor_accept(ctxt, exp->exp_imp_reverse);
4225 llog_ctxt_put(ctxt);
4227 lquota_setinfo(filter_quota_interface_ref, exp, obd);
4232 int filter_iocontrol(unsigned int cmd, struct obd_export *exp,
4233 int len, void *karg, void *uarg)
4235 struct obd_device *obd = exp->exp_obd;
4236 struct obd_ioctl_data *data = karg;
4240 case OBD_IOC_ABORT_RECOVERY: {
4241 CERROR("aborting recovery for device %s\n", obd->obd_name);
4242 target_stop_recovery_thread(obd);
4246 case OBD_IOC_SYNC: {
4247 CDEBUG(D_RPCTRACE, "syncing ost %s\n", obd->obd_name);
4248 rc = fsfilt_sync(obd, obd->u.obt.obt_sb);
4252 case OBD_IOC_SET_READONLY: {
4254 struct super_block *sb = obd->u.obt.obt_sb;
4255 struct inode *inode = sb->s_root->d_inode;
4256 BDEVNAME_DECLARE_STORAGE(tmp);
4257 CERROR("*** setting device %s read-only ***\n",
4258 ll_bdevname(sb, tmp));
4260 handle = fsfilt_start(obd, inode, FSFILT_OP_MKNOD, NULL);
4261 if (!IS_ERR(handle))
4262 rc = fsfilt_commit(obd, inode, handle, 1);
4264 CDEBUG(D_HA, "syncing ost %s\n", obd->obd_name);
4265 rc = fsfilt_sync(obd, obd->u.obt.obt_sb);
4267 lvfs_set_rdonly(obd, obd->u.obt.obt_sb);
4271 case OBD_IOC_CATLOGLIST: {
4272 rc = llog_catalog_list(obd, 1, data);
4276 case OBD_IOC_LLOG_CANCEL:
4277 case OBD_IOC_LLOG_REMOVE:
4278 case OBD_IOC_LLOG_INFO:
4279 case OBD_IOC_LLOG_PRINT: {
4280 /* FIXME to be finished */
4281 RETURN(-EOPNOTSUPP);
4283 struct llog_ctxt *ctxt = NULL;
4285 push_ctxt(&saved, &ctxt->loc_exp->exp_obd->obd_lvfs_ctxt, NULL);
4286 rc = llog_ioctl(ctxt, cmd, data);
4287 pop_ctxt(&saved, &ctxt->loc_exp->exp_obd->obd_lvfs_ctxt, NULL);
4300 static int filter_health_check(struct obd_device *obd)
4302 #ifdef USE_HEALTH_CHECK_WRITE
4303 struct filter_obd *filter = &obd->u.filter;
4308 * health_check to return 0 on healthy
4309 * and 1 on unhealthy.
4311 if (obd->u.obt.obt_sb->s_flags & MS_RDONLY)
4314 #ifdef USE_HEALTH_CHECK_WRITE
4315 LASSERT(filter->fo_health_check_filp != NULL);
4316 rc |= !!lvfs_check_io_health(obd, filter->fo_health_check_filp);
4321 static struct dentry *filter_lvfs_fid2dentry(__u64 id, __u32 gen, __u64 gr,
4324 return filter_fid2dentry(data, NULL, gr, id);
4327 static int filter_process_config(struct obd_device *obd, obd_count len,
4330 struct lustre_cfg *lcfg = buf;
4331 struct lprocfs_static_vars lvars;
4334 switch (lcfg->lcfg_command) {
4335 case LCFG_SPTLRPC_CONF: {
4336 struct filter_obd *filter = &obd->u.filter;
4337 struct sptlrpc_conf_log *log;
4338 struct sptlrpc_rule_set tmp_rset;
4340 log = sptlrpc_conf_log_extract(lcfg);
4346 sptlrpc_rule_set_init(&tmp_rset);
4348 rc = sptlrpc_rule_set_from_log(&tmp_rset, log);
4350 CERROR("obd %s: failed get sptlrpc rules: %d\n",
4355 write_lock(&filter->fo_sptlrpc_lock);
4356 sptlrpc_rule_set_free(&filter->fo_sptlrpc_rset);
4357 filter->fo_sptlrpc_rset = tmp_rset;
4358 write_unlock(&filter->fo_sptlrpc_lock);
4360 sptlrpc_target_update_exp_flavor(obd, &tmp_rset);
4364 lprocfs_filter_init_vars(&lvars);
4366 rc = class_process_proc_param(PARAM_OST, lvars.obd_vars,
4374 static struct lvfs_callback_ops filter_lvfs_ops = {
4375 l_fid2dentry: filter_lvfs_fid2dentry,
4378 static struct obd_ops filter_obd_ops = {
4379 .o_owner = THIS_MODULE,
4380 .o_get_info = filter_get_info,
4381 .o_set_info_async = filter_set_info_async,
4382 .o_setup = filter_setup,
4383 .o_precleanup = filter_precleanup,
4384 .o_cleanup = filter_cleanup,
4385 .o_connect = filter_connect,
4386 .o_reconnect = filter_reconnect,
4387 .o_disconnect = filter_disconnect,
4388 .o_ping = filter_ping,
4389 .o_init_export = filter_init_export,
4390 .o_destroy_export = filter_destroy_export,
4391 .o_statfs = filter_statfs,
4392 .o_getattr = filter_getattr,
4393 .o_unpackmd = filter_unpackmd,
4394 .o_create = filter_create,
4395 .o_setattr = filter_setattr,
4396 .o_destroy = filter_destroy,
4397 .o_brw = filter_brw,
4398 .o_punch = filter_truncate,
4399 .o_sync = filter_sync,
4400 .o_preprw = filter_preprw,
4401 .o_commitrw = filter_commitrw,
4402 .o_llog_init = filter_llog_init,
4403 .o_llog_connect = filter_llog_connect,
4404 .o_llog_finish = filter_llog_finish,
4405 .o_iocontrol = filter_iocontrol,
4406 .o_health_check = filter_health_check,
4407 .o_process_config = filter_process_config,
4410 quota_interface_t *filter_quota_interface_ref;
4411 extern quota_interface_t filter_quota_interface;
4413 static int __init obdfilter_init(void)
4415 struct lprocfs_static_vars lvars;
4418 lprocfs_filter_init_vars(&lvars);
4420 request_module("lquota");
4421 OBD_ALLOC(obdfilter_created_scratchpad,
4422 OBDFILTER_CREATED_SCRATCHPAD_ENTRIES *
4423 sizeof(*obdfilter_created_scratchpad));
4424 if (obdfilter_created_scratchpad == NULL)
4427 ll_fmd_cachep = cfs_mem_cache_create("ll_fmd_cache",
4428 sizeof(struct filter_mod_data),
4431 GOTO(out, rc = -ENOMEM);
4433 filter_quota_interface_ref = PORTAL_SYMBOL_GET(filter_quota_interface);
4434 init_obd_quota_ops(filter_quota_interface_ref, &filter_obd_ops);
4436 rc = class_register_type(&filter_obd_ops, NULL, lvars.module_vars,
4437 LUSTRE_OST_NAME, NULL);
4441 err = cfs_mem_cache_destroy(ll_fmd_cachep);
4442 LASSERTF(err == 0, "Cannot destroy ll_fmd_cachep: rc %d\n",err);
4443 ll_fmd_cachep = NULL;
4445 if (filter_quota_interface_ref)
4446 PORTAL_SYMBOL_PUT(filter_quota_interface);
4448 OBD_FREE(obdfilter_created_scratchpad,
4449 OBDFILTER_CREATED_SCRATCHPAD_ENTRIES *
4450 sizeof(*obdfilter_created_scratchpad));
4456 static void __exit obdfilter_exit(void)
4458 if (filter_quota_interface_ref)
4459 PORTAL_SYMBOL_PUT(filter_quota_interface);
4461 if (ll_fmd_cachep) {
4462 int rc = cfs_mem_cache_destroy(ll_fmd_cachep);
4463 LASSERTF(rc == 0, "Cannot destroy ll_fmd_cachep: rc %d\n", rc);
4464 ll_fmd_cachep = NULL;
4467 class_unregister_type(LUSTRE_OST_NAME);
4468 OBD_FREE(obdfilter_created_scratchpad,
4469 OBDFILTER_CREATED_SCRATCHPAD_ENTRIES *
4470 sizeof(*obdfilter_created_scratchpad));
4473 MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
4474 MODULE_DESCRIPTION("Lustre Filtering OBD driver");
4475 MODULE_LICENSE("GPL");
4477 module_init(obdfilter_init);
4478 module_exit(obdfilter_exit);