1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
6 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 only,
10 * as published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License version 2 for more details (a copy is included
16 * in the LICENSE file that accompanied this code).
18 * You should have received a copy of the GNU General Public License
19 * version 2 along with this program; If not, see
20 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
22 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
23 * CA 95054 USA or visit www.sun.com if you need additional information or
29 * Copyright 2008 Sun Microsystems, Inc. All rights reserved
30 * Use is subject to license terms.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
36 * lustre/obdfilter/filter.c
38 * Author: Peter Braam <braam@clusterfs.com>
39 * Author: Andreas Dilger <adilger@clusterfs.com>
43 * Invariant: Get O/R i_mutex for lookup, if needed, before any journal ops
44 * (which need to get journal_lock, may block if journal full).
46 * Invariant: Call filter_start_transno() before any journal ops to avoid the
47 * same deadlock problem. We can (and want) to get rid of the
48 * transno sem in favour of the dir/inode i_mutex to avoid single
49 * threaded operation on the OST.
52 #define DEBUG_SUBSYSTEM S_FILTER
54 #ifndef AUTOCONF_INCLUDED
55 #include <linux/config.h>
57 #include <linux/module.h>
59 #include <linux/dcache.h>
60 #include <linux/init.h>
61 #include <linux/version.h>
62 #include <linux/sched.h>
63 #include <linux/mount.h>
64 #include <linux/buffer_head.h>
66 #include <obd_cksum.h>
67 #include <obd_class.h>
69 #include <lustre_dlm.h>
70 #include <lustre_fsfilt.h>
71 #include <lprocfs_status.h>
72 #include <lustre_log.h>
73 #include <libcfs/list.h>
74 #include <lustre_disk.h>
75 #include <lustre_quota.h>
76 #include <linux/slab.h>
77 #include <lustre_param.h>
78 #include <lustre/ll_fiemap.h>
80 #include "filter_internal.h"
82 static struct lvfs_callback_ops filter_lvfs_ops;
83 cfs_mem_cache_t *ll_fmd_cachep;
85 static void filter_commit_cb(struct obd_device *obd, __u64 transno,
86 void *cb_data, int error)
88 struct obd_export *exp = cb_data;
89 LASSERT(exp->exp_obd == obd);
90 obd_transno_commit_cb(obd, transno, exp, error);
91 class_export_cb_put(exp);
94 int filter_version_get_check(struct obd_export *exp,
95 struct obd_trans_info *oti, struct inode *inode)
99 if (inode == NULL || oti == NULL)
102 curr_version = fsfilt_get_version(exp->exp_obd, inode);
103 if ((__s64)curr_version == -EOPNOTSUPP)
105 /* VBR: version is checked always because costs nothing */
106 if (oti->oti_pre_version != 0 &&
107 oti->oti_pre_version != curr_version) {
108 CDEBUG(D_INODE, "Version mismatch "LPX64" != "LPX64"\n",
109 oti->oti_pre_version, curr_version);
110 cfs_spin_lock(&exp->exp_lock);
111 exp->exp_vbr_failed = 1;
112 cfs_spin_unlock(&exp->exp_lock);
115 oti->oti_pre_version = curr_version;
119 /* Assumes caller has already pushed us into the kernel context. */
120 int filter_finish_transno(struct obd_export *exp, struct inode *inode,
121 struct obd_trans_info *oti, int rc, int force_sync)
123 struct filter_obd *filter = &exp->exp_obd->u.filter;
124 struct filter_export_data *fed = &exp->exp_filter_data;
125 struct lr_server_data *fsd = class_server_data(exp->exp_obd);
126 struct lsd_client_data *lcd;
129 int err, log_pri = D_RPCTRACE;
131 /* Propagate error code. */
135 if (!exp->exp_obd->obd_replayable || oti == NULL)
138 cfs_mutex_down(&fed->fed_lcd_lock);
140 /* if the export has already been disconnected, we have no last_rcvd slot,
141 * update server data with latest transno then */
143 cfs_mutex_up(&fed->fed_lcd_lock);
144 CWARN("commit transaction for disconnected client %s: rc %d\n",
145 exp->exp_client_uuid.uuid, rc);
146 err = filter_update_server_data(exp->exp_obd);
150 /* we don't allocate new transnos for replayed requests */
151 cfs_spin_lock(&filter->fo_translock);
152 if (oti->oti_transno == 0) {
153 last_rcvd = le64_to_cpu(fsd->lsd_last_transno) + 1;
154 fsd->lsd_last_transno = cpu_to_le64(last_rcvd);
156 last_rcvd = oti->oti_transno;
157 if (last_rcvd > le64_to_cpu(fsd->lsd_last_transno))
158 fsd->lsd_last_transno = cpu_to_le64(last_rcvd);
160 oti->oti_transno = last_rcvd;
162 LASSERT(last_rcvd >= le64_to_cpu(lcd->lcd_last_transno));
163 lcd->lcd_last_transno = cpu_to_le64(last_rcvd);
164 lcd->lcd_pre_versions[0] = cpu_to_le64(oti->oti_pre_version);
165 lcd->lcd_last_xid = cpu_to_le64(oti->oti_xid);
166 cfs_spin_unlock(&filter->fo_translock);
169 fsfilt_set_version(exp->exp_obd, inode, last_rcvd);
171 off = fed->fed_lr_off;
173 CERROR("%s: client idx %d is %lld\n", exp->exp_obd->obd_name,
174 fed->fed_lr_idx, fed->fed_lr_off);
177 class_export_cb_get(exp); /* released when the cb is called */
179 force_sync = fsfilt_add_journal_cb(exp->exp_obd,
185 err = fsfilt_write_record(exp->exp_obd, filter->fo_rcvd_filp,
186 lcd, sizeof(*lcd), &off,
187 force_sync | exp->exp_need_sync);
189 filter_commit_cb(exp->exp_obd, last_rcvd, exp, err);
197 CDEBUG(log_pri, "wrote trans "LPU64" for client %s at #%d: err = %d\n",
198 last_rcvd, lcd->lcd_uuid, fed->fed_lr_idx, err);
199 cfs_mutex_up(&fed->fed_lcd_lock);
203 void f_dput(struct dentry *dentry)
205 /* Can't go inside filter_ddelete because it can block */
206 CDEBUG(D_INODE, "putting %s: %p, count = %d\n",
207 dentry->d_name.name, dentry, atomic_read(&dentry->d_count) - 1);
208 LASSERT(atomic_read(&dentry->d_count) > 0);
213 static void init_brw_stats(struct brw_stats *brw_stats)
216 for (i = 0; i < BRW_LAST; i++)
217 cfs_spin_lock_init(&brw_stats->hist[i].oh_lock);
220 static int lprocfs_init_rw_stats(struct obd_device *obd,
221 struct lprocfs_stats **stats)
225 num_stats = (sizeof(*obd->obd_type->typ_dt_ops) / sizeof(void *)) +
226 LPROC_FILTER_LAST - 1;
227 *stats = lprocfs_alloc_stats(num_stats, LPROCFS_STATS_FLAG_NOPERCPU);
231 lprocfs_init_ops_stats(LPROC_FILTER_LAST, *stats);
232 lprocfs_counter_init(*stats, LPROC_FILTER_READ_BYTES,
233 LPROCFS_CNTR_AVGMINMAX, "read_bytes", "bytes");
234 lprocfs_counter_init(*stats, LPROC_FILTER_WRITE_BYTES,
235 LPROCFS_CNTR_AVGMINMAX, "write_bytes", "bytes");
240 /* brw_stats are 2128, ops are 3916, ldlm are 204, so 6248 bytes per client,
241 plus the procfs overhead :( */
242 static int filter_export_stats_init(struct obd_device *obd,
243 struct obd_export *exp,
249 if (obd_uuid_equals(&exp->exp_client_uuid, &obd->obd_uuid))
250 /* Self-export gets no proc entry */
253 rc = lprocfs_exp_setup(exp, client_nid, &newnid);
255 /* Mask error for already created
263 struct nid_stat *tmp = exp->exp_nid_stats;
264 LASSERT(tmp != NULL);
266 OBD_ALLOC(tmp->nid_brw_stats, sizeof(struct brw_stats));
267 if (tmp->nid_brw_stats == NULL)
268 GOTO(clean, rc = -ENOMEM);
270 init_brw_stats(tmp->nid_brw_stats);
271 rc = lprocfs_seq_create(exp->exp_nid_stats->nid_proc, "brw_stats",
272 0644, &filter_per_nid_stats_fops,
275 CWARN("Error adding the brw_stats file\n");
277 rc = lprocfs_init_rw_stats(obd, &exp->exp_nid_stats->nid_stats);
281 rc = lprocfs_register_stats(tmp->nid_proc, "stats",
285 /* Always add in ldlm_stats */
286 tmp->nid_ldlm_stats =
287 lprocfs_alloc_stats(LDLM_LAST_OPC - LDLM_FIRST_OPC,
288 LPROCFS_STATS_FLAG_NOPERCPU);
289 if (tmp->nid_ldlm_stats == NULL)
290 GOTO(clean, rc = -ENOMEM);
292 lprocfs_init_ldlm_stats(tmp->nid_ldlm_stats);
293 rc = lprocfs_register_stats(tmp->nid_proc, "ldlm_stats",
294 tmp->nid_ldlm_stats);
301 lprocfs_exp_cleanup(exp);
305 /* Add client data to the FILTER. We use a bitmap to locate a free space
306 * in the last_rcvd file if cl_idx is -1 (i.e. a new client).
307 * Otherwise, we have just read the data from the last_rcvd file and
308 * we know its offset. */
309 static int filter_client_add(struct obd_device *obd, struct obd_export *exp,
312 struct filter_obd *filter = &obd->u.filter;
313 struct filter_export_data *fed = &exp->exp_filter_data;
314 struct lr_server_data *fsd = class_server_data(obd);
315 unsigned long *bitmap = filter->fo_last_rcvd_slots;
316 int new_client = (cl_idx == -1);
320 LASSERT(bitmap != NULL);
321 LASSERTF(cl_idx > -2, "%d\n", cl_idx);
324 if (strcmp(fed->fed_lcd->lcd_uuid, obd->obd_uuid.uuid) == 0)
327 /* the bitmap operations can handle cl_idx > sizeof(long) * 8, so
328 * there's no need for extra complication here
331 cl_idx = cfs_find_first_zero_bit(bitmap, LR_MAX_CLIENTS);
333 if (cl_idx >= LR_MAX_CLIENTS) {
334 CERROR("no room for %u client - fix LR_MAX_CLIENTS\n",
338 if (cfs_test_and_set_bit(cl_idx, bitmap)) {
339 cl_idx = cfs_find_next_zero_bit(bitmap, LR_MAX_CLIENTS,
344 if (cfs_test_and_set_bit(cl_idx, bitmap)) {
345 CERROR("FILTER client %d: bit already set in bitmap!\n",
351 fed->fed_lr_idx = cl_idx;
352 fed->fed_lr_off = le32_to_cpu(fsd->lsd_client_start) +
353 cl_idx * le16_to_cpu(fsd->lsd_client_size);
354 cfs_init_mutex(&fed->fed_lcd_lock);
355 LASSERTF(fed->fed_lr_off > 0, "fed_lr_off = %llu\n", fed->fed_lr_off);
357 CDEBUG(D_INFO, "client at index %d (%llu) with UUID '%s' added\n",
358 fed->fed_lr_idx, fed->fed_lr_off, fed->fed_lcd->lcd_uuid);
361 struct lvfs_run_ctxt saved;
362 loff_t off = fed->fed_lr_off;
366 CDEBUG(D_INFO, "writing client lcd at idx %u (%llu) (len %u)\n",
367 fed->fed_lr_idx,off,(unsigned int)sizeof(*fed->fed_lcd));
369 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
370 /* Transaction needed to fix bug 1403 */
371 handle = fsfilt_start(obd,
372 filter->fo_rcvd_filp->f_dentry->d_inode,
373 FSFILT_OP_SETATTR, NULL);
374 if (IS_ERR(handle)) {
375 rc = PTR_ERR(handle);
376 CERROR("unable to start transaction: rc %d\n", rc);
378 fed->fed_lcd->lcd_last_epoch = fsd->lsd_start_epoch;
379 exp->exp_last_request_time = cfs_time_current_sec();
380 rc = fsfilt_add_journal_cb(obd, 0, handle,
381 target_client_add_cb,
382 class_export_cb_get(exp));
384 cfs_spin_lock(&exp->exp_lock);
385 exp->exp_need_sync = 1;
386 cfs_spin_unlock(&exp->exp_lock);
388 rc = fsfilt_write_record(obd, filter->fo_rcvd_filp,
390 sizeof(*fed->fed_lcd),
391 &off, rc /* sync if no cb */);
393 filter->fo_rcvd_filp->f_dentry->d_inode,
396 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
399 CERROR("error writing %s client idx %u: rc %d\n",
400 LAST_RCVD, fed->fed_lr_idx, rc);
407 static int filter_client_del(struct obd_export *exp)
409 struct filter_export_data *fed = &exp->exp_filter_data;
410 struct filter_obd *filter = &exp->exp_obd->u.filter;
411 struct obd_device *obd = exp->exp_obd;
412 struct lvfs_run_ctxt saved;
413 struct lsd_client_data *lcd = fed->fed_lcd;
421 /* XXX if lcd_uuid were a real obd_uuid, I could use obd_uuid_equals */
422 if (strcmp(lcd->lcd_uuid, obd->obd_uuid.uuid ) == 0)
425 LASSERT(filter->fo_last_rcvd_slots != NULL);
427 off = fed->fed_lr_off;
429 CDEBUG(D_INFO, "freeing client at idx %u, offset %lld with UUID '%s'\n",
430 fed->fed_lr_idx, fed->fed_lr_off, lcd->lcd_uuid);
432 /* Don't clear fed_lr_idx here as it is likely also unset. At worst
433 * we leak a client slot that will be cleaned on the next recovery. */
435 CERROR("%s: client idx %d has med_off %lld\n",
436 obd->obd_name, fed->fed_lr_idx, off);
437 GOTO(free, rc = -EINVAL);
440 /* Clear the bit _after_ zeroing out the client so we don't
441 race with filter_client_add and zero out new clients.*/
442 if (!cfs_test_bit(fed->fed_lr_idx, filter->fo_last_rcvd_slots)) {
443 CERROR("FILTER client %u: bit already clear in bitmap!!\n",
448 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
449 /* Make sure the server's last_transno is up to date.
450 * This should be done before zeroing client slot so last_transno will
451 * be in server data or in client data in case of failure */
452 filter_update_server_data(obd);
454 cfs_mutex_down(&fed->fed_lcd_lock);
455 memset(fed->fed_lcd->lcd_uuid, 0, sizeof fed->fed_lcd->lcd_uuid);
456 rc = fsfilt_write_record(obd, filter->fo_rcvd_filp,
458 sizeof(*fed->fed_lcd), &off, 0);
459 cfs_mutex_up(&fed->fed_lcd_lock);
460 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
462 CDEBUG(rc == 0 ? D_INFO : D_ERROR,
463 "zero out client %s at idx %u/%llu in %s, rc %d\n",
464 lcd->lcd_uuid, fed->fed_lr_idx, fed->fed_lr_off,
471 /* drop fmd reference, free it if last ref. must be called with fed_lock held.*/
472 static inline void filter_fmd_put_nolock(struct filter_export_data *fed,
473 struct filter_mod_data *fmd)
475 LASSERT_SPIN_LOCKED(&fed->fed_lock);
476 if (--fmd->fmd_refcount == 0) {
477 /* XXX when we have persistent reservations and the handle
478 * is stored herein we need to drop it here. */
479 fed->fed_mod_count--;
480 cfs_list_del(&fmd->fmd_list);
481 OBD_SLAB_FREE(fmd, ll_fmd_cachep, sizeof(*fmd));
485 /* drop fmd reference, free it if last ref */
486 void filter_fmd_put(struct obd_export *exp, struct filter_mod_data *fmd)
488 struct filter_export_data *fed;
493 fed = &exp->exp_filter_data;
494 cfs_spin_lock(&fed->fed_lock);
495 filter_fmd_put_nolock(fed, fmd); /* caller reference */
496 cfs_spin_unlock(&fed->fed_lock);
499 /* expire entries from the end of the list if there are too many
500 * or they are too old */
501 static void filter_fmd_expire_nolock(struct filter_obd *filter,
502 struct filter_export_data *fed,
503 struct filter_mod_data *keep)
505 struct filter_mod_data *fmd, *tmp;
507 cfs_list_for_each_entry_safe(fmd, tmp, &fed->fed_mod_list, fmd_list) {
511 if (cfs_time_before(jiffies, fmd->fmd_expire) &&
512 fed->fed_mod_count < filter->fo_fmd_max_num)
515 cfs_list_del_init(&fmd->fmd_list);
516 filter_fmd_put_nolock(fed, fmd); /* list reference */
520 void filter_fmd_expire(struct obd_export *exp)
522 cfs_spin_lock(&exp->exp_filter_data.fed_lock);
523 filter_fmd_expire_nolock(&exp->exp_obd->u.filter,
524 &exp->exp_filter_data, NULL);
525 cfs_spin_unlock(&exp->exp_filter_data.fed_lock);
528 /* find specified objid, group in export fmd list.
529 * caller must hold fed_lock and take fmd reference itself */
530 static struct filter_mod_data *filter_fmd_find_nolock(struct filter_obd *filter,
531 struct filter_export_data *fed,
532 obd_id objid, obd_gr group)
534 struct filter_mod_data *found = NULL, *fmd;
536 LASSERT_SPIN_LOCKED(&fed->fed_lock);
538 cfs_list_for_each_entry_reverse(fmd, &fed->fed_mod_list, fmd_list) {
539 if (fmd->fmd_id == objid && fmd->fmd_gr == group) {
541 cfs_list_del(&fmd->fmd_list);
542 cfs_list_add_tail(&fmd->fmd_list, &fed->fed_mod_list);
543 fmd->fmd_expire = jiffies + filter->fo_fmd_max_age;
548 filter_fmd_expire_nolock(filter, fed, found);
553 /* Find fmd based on objid and group, or return NULL if not found. */
554 struct filter_mod_data *filter_fmd_find(struct obd_export *exp,
555 obd_id objid, obd_gr group)
557 struct filter_mod_data *fmd;
559 cfs_spin_lock(&exp->exp_filter_data.fed_lock);
560 fmd = filter_fmd_find_nolock(&exp->exp_obd->u.filter,
561 &exp->exp_filter_data, objid, group);
563 fmd->fmd_refcount++; /* caller reference */
564 cfs_spin_unlock(&exp->exp_filter_data.fed_lock);
569 /* Find fmd based on objid and group, or create a new one if none is found.
570 * It is possible for this function to return NULL under memory pressure,
571 * or if objid = 0 is passed (which will only cause old entries to expire).
572 * Currently this is not fatal because any fmd state is transient and
573 * may also be freed when it gets sufficiently old. */
574 struct filter_mod_data *filter_fmd_get(struct obd_export *exp,
575 obd_id objid, obd_gr group)
577 struct filter_export_data *fed = &exp->exp_filter_data;
578 struct filter_mod_data *found = NULL, *fmd_new = NULL;
580 OBD_SLAB_ALLOC_PTR_GFP(fmd_new, ll_fmd_cachep, CFS_ALLOC_IO);
582 cfs_spin_lock(&fed->fed_lock);
583 found = filter_fmd_find_nolock(&exp->exp_obd->u.filter,fed,objid,group);
586 cfs_list_add_tail(&fmd_new->fmd_list,
588 fmd_new->fmd_id = objid;
589 fmd_new->fmd_gr = group;
590 fmd_new->fmd_refcount++; /* list reference */
592 fed->fed_mod_count++;
594 OBD_SLAB_FREE(fmd_new, ll_fmd_cachep, sizeof(*fmd_new));
598 found->fmd_refcount++; /* caller reference */
599 found->fmd_expire = jiffies +
600 exp->exp_obd->u.filter.fo_fmd_max_age;
603 cfs_spin_unlock(&fed->fed_lock);
609 /* drop fmd list reference so it will disappear when last reference is put.
610 * This isn't so critical because it would in fact only affect the one client
611 * that is doing the unlink and at worst we have an stale entry referencing
612 * an object that should never be used again. */
613 static void filter_fmd_drop(struct obd_export *exp, obd_id objid, obd_gr group)
615 struct filter_mod_data *found = NULL;
617 cfs_spin_lock(&exp->exp_filter_data.fed_lock);
618 found = filter_fmd_find_nolock(&exp->exp_filter_data, objid, group);
620 cfs_list_del_init(&found->fmd_list);
621 filter_fmd_put_nolock(&exp->exp_filter_data, found);
623 cfs_spin_unlock(&exp->exp_filter_data.fed_lock);
626 #define filter_fmd_drop(exp, objid, group)
629 /* remove all entries from fmd list */
630 static void filter_fmd_cleanup(struct obd_export *exp)
632 struct filter_export_data *fed = &exp->exp_filter_data;
633 struct filter_mod_data *fmd = NULL, *tmp;
635 cfs_spin_lock(&fed->fed_lock);
636 cfs_list_for_each_entry_safe(fmd, tmp, &fed->fed_mod_list, fmd_list) {
637 cfs_list_del_init(&fmd->fmd_list);
638 filter_fmd_put_nolock(fed, fmd);
640 cfs_spin_unlock(&fed->fed_lock);
643 static int filter_init_export(struct obd_export *exp)
645 cfs_spin_lock_init(&exp->exp_filter_data.fed_lock);
646 CFS_INIT_LIST_HEAD(&exp->exp_filter_data.fed_mod_list);
648 cfs_spin_lock(&exp->exp_lock);
649 exp->exp_connecting = 1;
650 cfs_spin_unlock(&exp->exp_lock);
652 return ldlm_init_export(exp);
655 static int filter_free_server_data(struct filter_obd *filter)
657 lut_fini(NULL, filter->fo_obt.obt_lut);
658 OBD_FREE_PTR(filter->fo_obt.obt_lut);
662 /* assumes caller is already in kernel ctxt */
663 int filter_update_server_data(struct obd_device *obd)
665 struct file *filp = obd->u.obt.obt_rcvd_filp;
666 struct lr_server_data *fsd = class_server_data(obd);
671 CDEBUG(D_INODE, "server uuid : %s\n", fsd->lsd_uuid);
672 CDEBUG(D_INODE, "server last_rcvd : "LPU64"\n",
673 le64_to_cpu(fsd->lsd_last_transno));
674 CDEBUG(D_INODE, "server last_mount: "LPU64"\n",
675 le64_to_cpu(fsd->lsd_mount_count));
677 rc = fsfilt_write_record(obd, filp, fsd, sizeof(*fsd), &off, 0);
679 CERROR("error writing lr_server_data: rc = %d\n", rc);
684 int filter_update_last_objid(struct obd_device *obd, obd_gr group,
687 struct filter_obd *filter = &obd->u.filter;
693 if (filter->fo_last_objid_files[group] == NULL) {
694 CERROR("Object group "LPU64" not fully setup; not updating "
695 "last_objid\n", group);
699 CDEBUG(D_INODE, "%s: server last_objid for group "LPU64": "LPU64"\n",
700 obd->obd_name, group, filter->fo_last_objids[group]);
702 tmp = cpu_to_le64(filter->fo_last_objids[group]);
703 rc = fsfilt_write_record(obd, filter->fo_last_objid_files[group],
704 &tmp, sizeof(tmp), &off, force_sync);
706 CERROR("error writing group "LPU64" last objid: rc = %d\n",
710 extern int ost_handle(struct ptlrpc_request *req);
711 /* assumes caller has already in kernel ctxt */
712 static int filter_init_server_data(struct obd_device *obd, struct file * filp)
714 struct filter_obd *filter = &obd->u.filter;
715 struct lr_server_data *fsd;
716 struct lsd_client_data *lcd = NULL;
717 struct inode *inode = filp->f_dentry->d_inode;
718 unsigned long last_rcvd_size = i_size_read(inode);
719 struct lu_target *lut;
726 /* ensure padding in the struct is the correct size */
727 CLASSERT (offsetof(struct lr_server_data, lsd_padding) +
728 sizeof(fsd->lsd_padding) == LR_SERVER_SIZE);
729 CLASSERT (offsetof(struct lsd_client_data, lcd_padding) +
730 sizeof(lcd->lcd_padding) == LR_CLIENT_SIZE);
732 /* allocate and initialize lu_target */
736 rc = lut_init(NULL, lut, obd, NULL);
739 fsd = class_server_data(obd);
740 if (last_rcvd_size == 0) {
741 LCONSOLE_WARN("%s: new disk, initializing\n", obd->obd_name);
743 memcpy(fsd->lsd_uuid, obd->obd_uuid.uuid,sizeof(fsd->lsd_uuid));
744 fsd->lsd_last_transno = 0;
745 mount_count = fsd->lsd_mount_count = 0;
746 fsd->lsd_server_size = cpu_to_le32(LR_SERVER_SIZE);
747 fsd->lsd_client_start = cpu_to_le32(LR_CLIENT_START);
748 fsd->lsd_client_size = cpu_to_le16(LR_CLIENT_SIZE);
749 fsd->lsd_subdir_count = cpu_to_le16(FILTER_SUBDIR_COUNT);
750 filter->fo_subdir_count = FILTER_SUBDIR_COUNT;
751 /* OBD_COMPAT_OST is set in filter_connect_internal when the
752 * MDS first connects and assigns the OST index number. */
753 fsd->lsd_feature_incompat = cpu_to_le32(OBD_INCOMPAT_COMMON_LR|
756 rc = fsfilt_read_record(obd, filp, fsd, sizeof(*fsd), &off);
758 CDEBUG(D_INODE,"OBD filter: error reading %s: rc %d\n",
762 if (strcmp(fsd->lsd_uuid, obd->obd_uuid.uuid) != 0) {
763 LCONSOLE_ERROR_MSG(0x134, "Trying to start OBD %s "
764 "using the wrong disk %s. Were the "
765 "/dev/ assignments rearranged?\n",
766 obd->obd_uuid.uuid, fsd->lsd_uuid);
767 GOTO(err_fsd, rc = -EINVAL);
769 mount_count = le64_to_cpu(fsd->lsd_mount_count);
770 filter->fo_subdir_count = le16_to_cpu(fsd->lsd_subdir_count);
772 /* Assume old last_rcvd format unless I_C_LR is set */
773 if (!(fsd->lsd_feature_incompat &
774 cpu_to_le32(OBD_INCOMPAT_COMMON_LR)))
775 fsd->lsd_last_transno = fsd->lsd_compat14;
777 /* OBD_COMPAT_OST is set in filter_connect_internal when the
778 * MDS first connects and assigns the OST index number. */
779 fsd->lsd_feature_incompat |= cpu_to_le32(OBD_INCOMPAT_COMMON_LR|
783 if (fsd->lsd_feature_incompat & ~cpu_to_le32(FILTER_INCOMPAT_SUPP)) {
784 CERROR("%s: unsupported incompat filesystem feature(s) %x\n",
785 obd->obd_name, le32_to_cpu(fsd->lsd_feature_incompat) &
786 ~FILTER_INCOMPAT_SUPP);
787 GOTO(err_fsd, rc = -EINVAL);
789 if (fsd->lsd_feature_rocompat & ~cpu_to_le32(FILTER_ROCOMPAT_SUPP)) {
790 CERROR("%s: unsupported read-only filesystem feature(s) %x\n",
791 obd->obd_name, le32_to_cpu(fsd->lsd_feature_rocompat) &
792 ~FILTER_ROCOMPAT_SUPP);
793 /* Do something like remount filesystem read-only */
794 GOTO(err_fsd, rc = -EINVAL);
797 start_epoch = le32_to_cpu(fsd->lsd_start_epoch);
799 CDEBUG(D_INODE, "%s: server start_epoch : %#x\n",
800 obd->obd_name, start_epoch);
801 CDEBUG(D_INODE, "%s: server last_transno : "LPX64"\n",
802 obd->obd_name, le64_to_cpu(fsd->lsd_last_transno));
803 CDEBUG(D_INODE, "%s: server mount_count: "LPU64"\n",
804 obd->obd_name, mount_count + 1);
805 CDEBUG(D_INODE, "%s: server data size: %u\n",
806 obd->obd_name, le32_to_cpu(fsd->lsd_server_size));
807 CDEBUG(D_INODE, "%s: per-client data start: %u\n",
808 obd->obd_name, le32_to_cpu(fsd->lsd_client_start));
809 CDEBUG(D_INODE, "%s: per-client data size: %u\n",
810 obd->obd_name, le32_to_cpu(fsd->lsd_client_size));
811 CDEBUG(D_INODE, "%s: server subdir_count: %u\n",
812 obd->obd_name, le16_to_cpu(fsd->lsd_subdir_count));
813 CDEBUG(D_INODE, "%s: last_rcvd clients: %lu\n", obd->obd_name,
814 last_rcvd_size <= le32_to_cpu(fsd->lsd_client_start) ? 0 :
815 (last_rcvd_size - le32_to_cpu(fsd->lsd_client_start)) /
816 le16_to_cpu(fsd->lsd_client_size));
818 if (!obd->obd_replayable) {
819 CWARN("%s: recovery support OFF\n", obd->obd_name);
823 for (cl_idx = 0, off = le32_to_cpu(fsd->lsd_client_start);
824 off < last_rcvd_size; cl_idx++) {
826 struct obd_export *exp;
827 struct filter_export_data *fed;
832 GOTO(err_client, rc = -ENOMEM);
835 /* Don't assume off is incremented properly by
836 * fsfilt_read_record(), in case sizeof(*lcd)
837 * isn't the same as fsd->lsd_client_size. */
838 off = le32_to_cpu(fsd->lsd_client_start) +
839 cl_idx * le16_to_cpu(fsd->lsd_client_size);
840 rc = fsfilt_read_record(obd, filp, lcd, sizeof(*lcd), &off);
842 CERROR("error reading FILT %s idx %d off %llu: rc %d\n",
843 LAST_RCVD, cl_idx, off, rc);
844 break; /* read error shouldn't cause startup to fail */
847 if (lcd->lcd_uuid[0] == '\0') {
848 CDEBUG(D_INFO, "skipping zeroed client at offset %d\n",
853 check_lcd(obd->obd_name, cl_idx, lcd);
855 last_rcvd = le64_to_cpu(lcd->lcd_last_transno);
857 /* These exports are cleaned up by filter_disconnect(), so they
858 * need to be set up like real exports as filter_connect() does.
860 exp = class_new_export(obd, (struct obd_uuid *)lcd->lcd_uuid);
862 CDEBUG(D_HA, "RCVRNG CLIENT uuid: %s idx: %d lr: "LPU64
863 " srv lr: "LPU64"\n", lcd->lcd_uuid, cl_idx,
864 last_rcvd, le64_to_cpu(fsd->lsd_last_transno));
866 if (PTR_ERR(exp) == -EALREADY) {
867 /* export already exists, zero out this one */
868 CERROR("Zeroing out duplicate export due to "
870 lcd->lcd_uuid[0] = '\0';
872 GOTO(err_client, rc = PTR_ERR(exp));
875 fed = &exp->exp_filter_data;
877 fed->fed_group = 0; /* will be assigned at connect */
878 filter_export_stats_init(obd, exp, NULL);
879 rc = filter_client_add(obd, exp, cl_idx);
880 /* can't fail for existing client */
881 LASSERTF(rc == 0, "rc = %d\n", rc);
883 /* VBR: set export last committed */
884 exp->exp_last_committed = last_rcvd;
885 cfs_spin_lock(&exp->exp_lock);
886 exp->exp_connecting = 0;
887 exp->exp_in_recovery = 0;
888 cfs_spin_unlock(&exp->exp_lock);
889 cfs_spin_lock_bh(&obd->obd_processing_task_lock);
890 obd->obd_max_recoverable_clients++;
891 cfs_spin_unlock_bh(&obd->obd_processing_task_lock);
893 class_export_put(exp);
896 /* Need to check last_rcvd even for duplicated exports. */
897 CDEBUG(D_OTHER, "client at idx %d has last_rcvd = "LPU64"\n",
900 if (last_rcvd > le64_to_cpu(fsd->lsd_last_transno))
901 fsd->lsd_last_transno = cpu_to_le64(last_rcvd);
907 obd->obd_last_committed = le64_to_cpu(fsd->lsd_last_transno);
909 filter->fo_mount_count = mount_count + 1;
910 fsd->lsd_mount_count = cpu_to_le64(filter->fo_mount_count);
912 /* save it, so mount count and last_transno is current */
913 rc = filter_update_server_data(obd);
915 GOTO(err_client, rc);
920 class_disconnect_exports(obd);
922 filter_free_server_data(filter);
926 static int filter_cleanup_groups(struct obd_device *obd)
928 struct filter_obd *filter = &obd->u.filter;
930 struct dentry *dentry;
934 if (filter->fo_dentry_O_groups != NULL) {
935 for (i = 0; i < filter->fo_group_count; i++) {
936 dentry = filter->fo_dentry_O_groups[i];
940 OBD_FREE(filter->fo_dentry_O_groups,
941 filter->fo_group_count *
942 sizeof(*filter->fo_dentry_O_groups));
943 filter->fo_dentry_O_groups = NULL;
945 if (filter->fo_last_objid_files != NULL) {
946 for (i = 0; i < filter->fo_group_count; i++) {
947 filp = filter->fo_last_objid_files[i];
951 OBD_FREE(filter->fo_last_objid_files,
952 filter->fo_group_count *
953 sizeof(*filter->fo_last_objid_files));
954 filter->fo_last_objid_files = NULL;
956 if (filter->fo_dentry_O_sub != NULL) {
957 for (i = 0; i < filter->fo_group_count; i++) {
958 for (j = 0; j < filter->fo_subdir_count; j++) {
959 dentry = filter->fo_dentry_O_sub[i].dentry[j];
964 OBD_FREE(filter->fo_dentry_O_sub,
965 filter->fo_group_count *
966 sizeof(*filter->fo_dentry_O_sub));
967 filter->fo_dentry_O_sub = NULL;
969 if (filter->fo_last_objids != NULL) {
970 OBD_FREE(filter->fo_last_objids,
971 filter->fo_group_count *
972 sizeof(*filter->fo_last_objids));
973 filter->fo_last_objids = NULL;
975 if (filter->fo_dentry_O != NULL) {
976 f_dput(filter->fo_dentry_O);
977 filter->fo_dentry_O = NULL;
982 static int filter_update_last_group(struct obd_device *obd, int group)
984 struct filter_obd *filter = &obd->u.filter;
985 struct file *filp = NULL;
986 int last_group = 0, rc;
990 if (group <= filter->fo_committed_group)
993 filp = filp_open("LAST_GROUP", O_RDWR, 0700);
997 CERROR("cannot open LAST_GROUP: rc = %d\n", rc);
1001 rc = fsfilt_read_record(obd, filp, &last_group, sizeof(__u32), &off);
1003 CDEBUG(D_INODE, "error reading LAST_GROUP: rc %d\n",rc);
1007 CDEBUG(D_INODE, "%s: previous %d, new %d\n",
1008 obd->obd_name, last_group, group);
1012 /* must be sync: bXXXX */
1013 rc = fsfilt_write_record(obd, filp, &last_group, sizeof(__u32), &off, 1);
1015 CDEBUG(D_INODE, "error updating LAST_GROUP: rc %d\n", rc);
1019 filter->fo_committed_group = group;
1022 filp_close(filp, 0);
1026 static int filter_read_group_internal(struct obd_device *obd, int group,
1029 struct filter_obd *filter = &obd->u.filter;
1030 __u64 *new_objids = NULL;
1031 struct filter_subdirs *new_subdirs = NULL, *tmp_subdirs = NULL;
1032 struct dentry **new_groups = NULL;
1033 struct file **new_files = NULL;
1034 struct dentry *dentry;
1036 int old_count = filter->fo_group_count, rc, stage = 0, i;
1040 int len = group + 1;
1042 snprintf(name, 24, "%d", group);
1046 dentry = ll_lookup_one_len(name, filter->fo_dentry_O,
1048 if (IS_ERR(dentry)) {
1049 CERROR("Cannot lookup expected object group %d: %ld\n",
1050 group, PTR_ERR(dentry));
1051 RETURN(PTR_ERR(dentry));
1054 dentry = simple_mkdir(filter->fo_dentry_O, filter->fo_vfsmnt,
1056 if (IS_ERR(dentry)) {
1057 CERROR("cannot lookup/create O/%s: rc = %ld\n", name,
1059 RETURN(PTR_ERR(dentry));
1064 snprintf(name, 24, "O/%d/LAST_ID", group);
1066 filp = filp_open(name, O_CREAT | O_RDWR, 0700);
1068 CERROR("cannot create %s: rc = %ld\n", name, PTR_ERR(filp));
1069 GOTO(cleanup, rc = PTR_ERR(filp));
1073 rc = fsfilt_read_record(obd, filp, &last_objid, sizeof(__u64), &off);
1075 CDEBUG(D_INODE, "error reading %s: rc %d\n", name, rc);
1079 if (filter->fo_subdir_count && filter_group_is_mds(group)) {
1080 OBD_ALLOC(tmp_subdirs, sizeof(*tmp_subdirs));
1081 if (tmp_subdirs == NULL)
1082 GOTO(cleanup, rc = -ENOMEM);
1085 for (i = 0; i < filter->fo_subdir_count; i++) {
1087 snprintf(dir, sizeof(dir), "d%u", i);
1089 tmp_subdirs->dentry[i] = simple_mkdir(dentry,
1092 if (IS_ERR(tmp_subdirs->dentry[i])) {
1093 rc = PTR_ERR(tmp_subdirs->dentry[i]);
1094 CERROR("can't lookup/create O/%d/%s: rc = %d\n",
1099 CDEBUG(D_INODE, "got/created O/%d/%s: %p\n", group, dir,
1100 tmp_subdirs->dentry[i]);
1104 /* 'group' is an index; we need an array of length 'group + 1' */
1105 if (group + 1 > old_count) {
1106 OBD_ALLOC(new_objids, len * sizeof(*new_objids));
1107 OBD_ALLOC(new_subdirs, len * sizeof(*new_subdirs));
1108 OBD_ALLOC(new_groups, len * sizeof(*new_groups));
1109 OBD_ALLOC(new_files, len * sizeof(*new_files));
1111 if (new_objids == NULL || new_subdirs == NULL ||
1112 new_groups == NULL || new_files == NULL)
1113 GOTO(cleanup, rc = -ENOMEM);
1116 memcpy(new_objids, filter->fo_last_objids,
1117 old_count * sizeof(*new_objids));
1118 memcpy(new_subdirs, filter->fo_dentry_O_sub,
1119 old_count * sizeof(*new_subdirs));
1120 memcpy(new_groups, filter->fo_dentry_O_groups,
1121 old_count * sizeof(*new_groups));
1122 memcpy(new_files, filter->fo_last_objid_files,
1123 old_count * sizeof(*new_files));
1125 OBD_FREE(filter->fo_last_objids,
1126 old_count * sizeof(*new_objids));
1127 OBD_FREE(filter->fo_dentry_O_sub,
1128 old_count * sizeof(*new_subdirs));
1129 OBD_FREE(filter->fo_dentry_O_groups,
1130 old_count * sizeof(*new_groups));
1131 OBD_FREE(filter->fo_last_objid_files,
1132 old_count * sizeof(*new_files));
1134 filter->fo_last_objids = new_objids;
1135 filter->fo_dentry_O_sub = new_subdirs;
1136 filter->fo_dentry_O_groups = new_groups;
1137 filter->fo_last_objid_files = new_files;
1138 filter->fo_group_count = len;
1141 filter->fo_dentry_O_groups[group] = dentry;
1142 filter->fo_last_objid_files[group] = filp;
1143 if (filter->fo_subdir_count && filter_group_is_mds(group)) {
1144 filter->fo_dentry_O_sub[group] = *tmp_subdirs;
1145 OBD_FREE(tmp_subdirs, sizeof(*tmp_subdirs));
1148 filter_update_last_group(obd, group);
1150 if (i_size_read(filp->f_dentry->d_inode) == 0) {
1151 filter->fo_last_objids[group] = FILTER_INIT_OBJID;
1152 rc = filter_update_last_objid(obd, group, 1);
1156 filter->fo_last_objids[group] = le64_to_cpu(last_objid);
1157 CDEBUG(D_INODE, "%s: server last_objid group %d: "LPU64"\n",
1158 obd->obd_name, group, last_objid);
1163 if (new_objids != NULL)
1164 OBD_FREE(new_objids, len * sizeof(*new_objids));
1165 if (new_subdirs != NULL)
1166 OBD_FREE(new_subdirs, len * sizeof(*new_subdirs));
1167 if (new_groups != NULL)
1168 OBD_FREE(new_groups, len * sizeof(*new_groups));
1169 if (new_files != NULL)
1170 OBD_FREE(new_files, len * sizeof(*new_files));
1172 if (filter->fo_subdir_count && filter_group_is_mds(group)) {
1173 for (i = 0; i < filter->fo_subdir_count; i++) {
1174 if (tmp_subdirs->dentry[i] != NULL)
1175 dput(tmp_subdirs->dentry[i]);
1177 OBD_FREE(tmp_subdirs, sizeof(*tmp_subdirs));
1180 filp_close(filp, 0);
1187 static int filter_read_groups(struct obd_device *obd, int last_group,
1190 struct filter_obd *filter = &obd->u.filter;
1191 int old_count, group, rc = 0;
1193 cfs_down(&filter->fo_init_lock);
1194 old_count = filter->fo_group_count;
1195 for (group = old_count; group <= last_group; group++) {
1196 rc = filter_read_group_internal(obd, group, create);
1200 cfs_up(&filter->fo_init_lock);
1204 /* FIXME: object groups */
1205 static int filter_prep_groups(struct obd_device *obd)
1207 struct filter_obd *filter = &obd->u.filter;
1208 struct dentry *O_dentry;
1210 int last_group, rc = 0, cleanup_phase = 0;
1214 O_dentry = simple_mkdir(current->fs->pwd, filter->fo_vfsmnt,
1216 CDEBUG(D_INODE, "got/created O: %p\n", O_dentry);
1217 if (IS_ERR(O_dentry)) {
1218 rc = PTR_ERR(O_dentry);
1219 CERROR("cannot open/create O: rc = %d\n", rc);
1222 filter->fo_dentry_O = O_dentry;
1223 cleanup_phase = 1; /* O_dentry */
1225 /* we have to initialize all groups before first connections from
1226 * clients because they may send create/destroy for any group -bzzz */
1227 filp = filp_open("LAST_GROUP", O_CREAT | O_RDWR, 0700);
1229 CERROR("cannot create LAST_GROUP: rc = %ld\n", PTR_ERR(filp));
1230 GOTO(cleanup, rc = PTR_ERR(filp));
1232 cleanup_phase = 2; /* filp */
1234 rc = fsfilt_read_record(obd, filp, &last_group, sizeof(__u32), &off);
1236 CDEBUG(D_INODE, "error reading LAST_GROUP: rc %d\n", rc);
1241 last_group = FILTER_GROUP_MDS0;
1243 CWARN("%s: initialize groups [%d,%d]\n", obd->obd_name,
1244 FILTER_GROUP_MDS0, last_group);
1245 filter->fo_committed_group = last_group;
1246 rc = filter_read_groups(obd, last_group, 1);
1250 filp_close(filp, 0);
1254 switch (cleanup_phase) {
1256 filp_close(filp, 0);
1258 filter_cleanup_groups(obd);
1259 f_dput(filter->fo_dentry_O);
1260 filter->fo_dentry_O = NULL;
1268 /* setup the object store with correct subdirectories */
1269 static int filter_prep(struct obd_device *obd)
1271 struct lvfs_run_ctxt saved;
1272 struct filter_obd *filter = &obd->u.filter;
1274 struct inode *inode;
1278 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
1279 file = filp_open(LAST_RCVD, O_RDWR | O_CREAT | O_LARGEFILE, 0700);
1280 if (!file || IS_ERR(file)) {
1282 CERROR("OBD filter: cannot open/create %s: rc = %d\n",
1286 filter->fo_rcvd_filp = file;
1287 if (!S_ISREG(file->f_dentry->d_inode->i_mode)) {
1288 CERROR("%s is not a regular file!: mode = %o\n", LAST_RCVD,
1289 file->f_dentry->d_inode->i_mode);
1290 GOTO(err_filp, rc = -ENOENT);
1293 inode = file->f_dentry->d_parent->d_inode;
1294 /* We use i_op->unlink directly in filter_vfs_unlink() */
1295 if (!inode->i_op || !inode->i_op->create || !inode->i_op->unlink) {
1296 CERROR("%s: filesystem does not support create/unlink ops\n",
1298 GOTO(err_filp, rc = -EOPNOTSUPP);
1301 rc = filter_init_server_data(obd, file);
1303 CERROR("cannot read %s: rc = %d\n", LAST_RCVD, rc);
1306 LASSERT(obd->u.obt.obt_lut);
1307 target_recovery_init(obd->u.obt.obt_lut, ost_handle);
1309 /* open and create health check io file*/
1310 file = filp_open(HEALTH_CHECK, O_RDWR | O_CREAT, 0644);
1313 CERROR("OBD filter: cannot open/create %s rc = %d\n",
1315 GOTO(err_server_data, rc);
1317 filter->fo_obt.obt_health_check_filp = file;
1318 if (!S_ISREG(file->f_dentry->d_inode->i_mode)) {
1319 CERROR("%s is not a regular file!: mode = %o\n", HEALTH_CHECK,
1320 file->f_dentry->d_inode->i_mode);
1321 GOTO(err_health_check, rc = -ENOENT);
1323 rc = lvfs_check_io_health(obd, file);
1325 GOTO(err_health_check, rc);
1327 rc = filter_prep_groups(obd);
1329 GOTO(err_health_check, rc);
1331 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
1336 if (filp_close(filter->fo_obt.obt_health_check_filp, 0))
1337 CERROR("can't close %s after error\n", HEALTH_CHECK);
1338 filter->fo_obt.obt_health_check_filp = NULL;
1340 target_recovery_fini(obd);
1341 filter_free_server_data(filter);
1343 if (filp_close(filter->fo_rcvd_filp, 0))
1344 CERROR("can't close %s after error\n", LAST_RCVD);
1345 filter->fo_rcvd_filp = NULL;
1349 /* cleanup the filter: write last used object id to status file */
1350 static void filter_post(struct obd_device *obd)
1352 struct lvfs_run_ctxt saved;
1353 struct filter_obd *filter = &obd->u.filter;
1356 /* XXX: filter_update_lastobjid used to call fsync_dev. It might be
1357 * best to start a transaction with h_sync, because we removed this
1360 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
1361 rc = filter_update_server_data(obd);
1363 CERROR("error writing server data: rc = %d\n", rc);
1365 for (i = 0; i < filter->fo_group_count; i++) {
1366 rc = filter_update_last_objid(obd, i,
1367 (i == filter->fo_group_count - 1));
1369 CERROR("error writing group %d lastobjid: rc = %d\n",
1373 rc = filp_close(filter->fo_rcvd_filp, 0);
1374 filter->fo_rcvd_filp = NULL;
1376 CERROR("error closing %s: rc = %d\n", LAST_RCVD, rc);
1378 rc = filp_close(filter->fo_obt.obt_health_check_filp, 0);
1379 filter->fo_obt.obt_health_check_filp = NULL;
1381 CERROR("error closing %s: rc = %d\n", HEALTH_CHECK, rc);
1383 filter_cleanup_groups(obd);
1384 filter_free_server_data(filter);
1385 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
1387 filter_free_capa_keys(filter);
1388 cleanup_capa_hash(filter->fo_capa_hash);
1391 static void filter_set_last_id(struct filter_obd *filter,
1392 obd_id id, obd_gr group)
1394 LASSERT(group <= filter->fo_group_count);
1396 cfs_spin_lock(&filter->fo_objidlock);
1397 filter->fo_last_objids[group] = id;
1398 cfs_spin_unlock(&filter->fo_objidlock);
1401 obd_id filter_last_id(struct filter_obd *filter, obd_gr group)
1404 LASSERT(group <= filter->fo_group_count);
1405 LASSERT(filter->fo_last_objids != NULL);
1407 /* FIXME: object groups */
1408 cfs_spin_lock(&filter->fo_objidlock);
1409 id = filter->fo_last_objids[group];
1410 cfs_spin_unlock(&filter->fo_objidlock);
1414 static int filter_lock_dentry(struct obd_device *obd, struct dentry *dparent)
1416 LOCK_INODE_MUTEX_PARENT(dparent->d_inode);
1420 /* We never dget the object parent, so DON'T dput it either */
1421 struct dentry *filter_parent(struct obd_device *obd, obd_gr group, obd_id objid)
1423 struct filter_obd *filter = &obd->u.filter;
1424 struct filter_subdirs *subdirs;
1425 LASSERT(group < filter->fo_group_count); /* FIXME: object groups */
1427 if (!filter_group_is_mds(group) || filter->fo_subdir_count == 0)
1428 return filter->fo_dentry_O_groups[group];
1430 subdirs = &filter->fo_dentry_O_sub[group];
1431 return subdirs->dentry[objid & (filter->fo_subdir_count - 1)];
1434 /* We never dget the object parent, so DON'T dput it either */
1435 struct dentry *filter_parent_lock(struct obd_device *obd, obd_gr group,
1438 unsigned long now = jiffies;
1439 struct dentry *dparent = filter_parent(obd, group, objid);
1442 if (IS_ERR(dparent))
1444 if (dparent == NULL)
1445 return ERR_PTR(-ENOENT);
1447 rc = filter_lock_dentry(obd, dparent);
1448 fsfilt_check_slow(obd, now, "parent lock");
1449 return rc ? ERR_PTR(rc) : dparent;
1452 /* We never dget the object parent, so DON'T dput it either */
1453 static void filter_parent_unlock(struct dentry *dparent)
1455 UNLOCK_INODE_MUTEX(dparent->d_inode);
1458 /* How to get files, dentries, inodes from object id's.
1460 * If dir_dentry is passed, the caller has already locked the parent
1461 * appropriately for this operation (normally a write lock). If
1462 * dir_dentry is NULL, we do a read lock while we do the lookup to
1463 * avoid races with create/destroy and such changing the directory
1464 * internal to the filesystem code. */
1465 struct dentry *filter_fid2dentry(struct obd_device *obd,
1466 struct dentry *dir_dentry,
1467 obd_gr group, obd_id id)
1469 struct dentry *dparent = dir_dentry;
1470 struct dentry *dchild;
1475 if (OBD_FAIL_CHECK(OBD_FAIL_OST_ENOENT) &&
1476 obd->u.filter.fo_destroys_in_progress == 0) {
1477 /* don't fail lookups for orphan recovery, it causes
1478 * later LBUGs when objects still exist during precreate */
1479 CDEBUG(D_INFO, "*** obd_fail_loc=%x ***\n",OBD_FAIL_OST_ENOENT);
1480 RETURN(ERR_PTR(-ENOENT));
1483 CERROR("fatal: invalid object id 0\n");
1484 RETURN(ERR_PTR(-ESTALE));
1487 len = sprintf(name, LPU64, id);
1488 if (dir_dentry == NULL) {
1489 dparent = filter_parent_lock(obd, group, id);
1490 if (IS_ERR(dparent)) {
1491 CERROR("%s: error getting object "LPU64":"LPU64
1492 " parent: rc %ld\n", obd->obd_name,
1493 id, group, PTR_ERR(dparent));
1497 CDEBUG(D_INODE, "looking up object O/%.*s/%s\n",
1498 dparent->d_name.len, dparent->d_name.name, name);
1499 dchild = /*ll_*/lookup_one_len(name, dparent, len);
1500 if (dir_dentry == NULL)
1501 filter_parent_unlock(dparent);
1502 if (IS_ERR(dchild)) {
1503 CERROR("%s: child lookup error %ld\n", obd->obd_name,
1508 if (dchild->d_inode != NULL && is_bad_inode(dchild->d_inode)) {
1509 CERROR("%s: got bad object "LPU64" inode %lu\n",
1510 obd->obd_name, id, dchild->d_inode->i_ino);
1512 RETURN(ERR_PTR(-ENOENT));
1515 CDEBUG(D_INODE, "got child objid %s: %p, count = %d\n",
1516 name, dchild, atomic_read(&dchild->d_count));
1518 LASSERT(atomic_read(&dchild->d_count) > 0);
1523 static int filter_prepare_destroy(struct obd_device *obd, obd_id objid,
1524 obd_id group, struct lustre_handle *lockh)
1526 int flags = LDLM_AST_DISCARD_DATA, rc;
1527 struct ldlm_res_id res_id;
1528 ldlm_policy_data_t policy = { .l_extent = { 0, OBD_OBJECT_EOF } };
1531 osc_build_res_name(objid, group, &res_id);
1532 /* Tell the clients that the object is gone now and that they should
1533 * throw away any cached pages. */
1534 rc = ldlm_cli_enqueue_local(obd->obd_namespace, &res_id, LDLM_EXTENT,
1535 &policy, LCK_PW, &flags, ldlm_blocking_ast,
1536 ldlm_completion_ast, NULL, NULL, 0, NULL,
1543 static void filter_fini_destroy(struct obd_device *obd,
1544 struct lustre_handle *lockh)
1546 if (lustre_handle_is_used(lockh))
1547 ldlm_lock_decref(lockh, LCK_PW);
1550 /* This is vfs_unlink() without down(i_sem). If we call regular vfs_unlink()
1551 * we have 2.6 lock ordering issues with filter_commitrw_write() as it takes
1552 * i_sem before starting a handle, while filter_destroy() + vfs_unlink do the
1553 * reverse. Caller must take i_sem before starting the transaction and we
1554 * drop it here before the inode is removed from the dentry. bug 4180/6984 */
1555 int filter_vfs_unlink(struct inode *dir, struct dentry *dentry,
1556 struct vfsmount *mnt)
1561 /* don't need dir->i_zombie for 2.4, it is for rename/unlink of dir
1562 * itself we already hold dir->i_mutex for child create/unlink ops */
1563 LASSERT(dentry->d_inode != NULL);
1564 LASSERT(TRYLOCK_INODE_MUTEX(dir) == 0);
1565 LASSERT(TRYLOCK_INODE_MUTEX(dentry->d_inode) == 0);
1569 if (/*!dentry->d_inode ||*/dentry->d_parent->d_inode != dir)
1570 GOTO(out, rc = -ENOENT);
1572 rc = ll_permission(dir, MAY_WRITE | MAY_EXEC, NULL);
1577 GOTO(out, rc = -EPERM);
1579 /* check_sticky() */
1580 if ((dentry->d_inode->i_uid != current->fsuid &&
1581 !cfs_capable(CFS_CAP_FOWNER)) || IS_APPEND(dentry->d_inode) ||
1582 IS_IMMUTABLE(dentry->d_inode))
1583 GOTO(out, rc = -EPERM);
1585 /* NOTE: This might need to go outside i_mutex, though it isn't clear if
1586 * that was done because of journal_start (which is already done
1587 * here) or some other ordering issue. */
1590 rc = ll_security_inode_unlink(dir, dentry, mnt);
1594 rc = dir->i_op->unlink(dir, dentry);
1596 /* need to drop i_mutex before we lose inode reference */
1597 UNLOCK_INODE_MUTEX(dentry->d_inode);
1604 /* Caller must hold LCK_PW on parent and push us into kernel context.
1605 * Caller must hold child i_mutex, we drop it always.
1606 * Caller is also required to ensure that dchild->d_inode exists. */
1607 static int filter_destroy_internal(struct obd_device *obd, obd_id objid,
1608 obd_gr group, struct dentry *dparent,
1609 struct dentry *dchild)
1611 struct inode *inode = dchild->d_inode;
1612 struct filter_obd *filter = &obd->u.filter;
1615 if (inode->i_nlink != 1 || atomic_read(&inode->i_count) != 1) {
1616 CERROR("destroying objid %.*s ino %lu nlink %lu count %d\n",
1617 dchild->d_name.len, dchild->d_name.name, inode->i_ino,
1618 (unsigned long)inode->i_nlink,
1619 atomic_read(&inode->i_count));
1622 rc = filter_vfs_unlink(dparent->d_inode, dchild, filter->fo_vfsmnt);
1624 CERROR("error unlinking objid %.*s: rc %d\n",
1625 dchild->d_name.len, dchild->d_name.name, rc);
1629 struct filter_intent_args {
1630 struct ldlm_lock **victim;
1635 static enum interval_iter filter_intent_cb(struct interval_node *n,
1638 struct ldlm_interval *node = (struct ldlm_interval *)n;
1639 struct filter_intent_args *arg = (struct filter_intent_args*)args;
1640 __u64 size = arg->size;
1641 struct ldlm_lock **v = arg->victim;
1642 struct ldlm_lock *lck;
1644 /* If the interval is lower than the current file size,
1646 if (interval_high(n) <= size)
1647 return INTERVAL_ITER_STOP;
1649 cfs_list_for_each_entry(lck, &node->li_group, l_sl_policy) {
1650 /* Don't send glimpse ASTs to liblustre clients.
1651 * They aren't listening for them, and they do
1652 * entirely synchronous I/O anyways. */
1653 if (lck->l_export == NULL ||
1654 lck->l_export->exp_libclient == 1)
1657 if (*arg->liblustre)
1658 *arg->liblustre = 0;
1661 *v = LDLM_LOCK_GET(lck);
1662 } else if ((*v)->l_policy_data.l_extent.start <
1663 lck->l_policy_data.l_extent.start) {
1664 LDLM_LOCK_RELEASE(*v);
1665 *v = LDLM_LOCK_GET(lck);
1668 /* the same policy group - every lock has the
1669 * same extent, so needn't do it any more */
1673 return INTERVAL_ITER_CONT;
1676 static int filter_intent_policy(struct ldlm_namespace *ns,
1677 struct ldlm_lock **lockp, void *req_cookie,
1678 ldlm_mode_t mode, int flags, void *data)
1680 CFS_LIST_HEAD(rpc_list);
1681 struct ptlrpc_request *req = req_cookie;
1682 struct ldlm_lock *lock = *lockp, *l = NULL;
1683 struct ldlm_resource *res = lock->l_resource;
1684 ldlm_processing_policy policy;
1685 struct ost_lvb *res_lvb, *reply_lvb;
1686 struct ldlm_reply *rep;
1688 int idx, rc, tmpflags = 0, only_liblustre = 1;
1689 struct ldlm_interval_tree *tree;
1690 struct filter_intent_args arg;
1691 __u32 repsize[3] = { [MSG_PTLRPC_BODY_OFF] = sizeof(struct ptlrpc_body),
1692 [DLM_LOCKREPLY_OFF] = sizeof(*rep),
1693 [DLM_REPLY_REC_OFF] = sizeof(*reply_lvb) };
1696 policy = ldlm_get_processing_policy(res);
1697 LASSERT(policy != NULL);
1698 LASSERT(req != NULL);
1700 rc = lustre_pack_reply(req, 3, repsize, NULL);
1702 RETURN(req->rq_status = rc);
1704 rep = lustre_msg_buf(req->rq_repmsg, DLM_LOCKREPLY_OFF, sizeof(*rep));
1705 LASSERT(rep != NULL);
1707 reply_lvb = lustre_msg_buf(req->rq_repmsg, DLM_REPLY_REC_OFF,
1708 sizeof(*reply_lvb));
1709 LASSERT(reply_lvb != NULL);
1711 //fixup_handle_for_resent_req(req, lock, &lockh);
1713 /* Call the extent policy function to see if our request can be
1714 * granted, or is blocked.
1715 * If the OST lock has LDLM_FL_HAS_INTENT set, it means a glimpse
1716 * lock, and should not be granted if the lock will be blocked.
1719 LASSERT(ns == res->lr_namespace);
1721 rc = policy(lock, &tmpflags, 0, &err, &rpc_list);
1722 check_res_locked(res);
1724 /* FIXME: we should change the policy function slightly, to not make
1725 * this list at all, since we just turn around and free it */
1726 while (!cfs_list_empty(&rpc_list)) {
1727 struct ldlm_lock *wlock =
1728 cfs_list_entry(rpc_list.next, struct ldlm_lock,
1730 LASSERT((lock->l_flags & LDLM_FL_AST_SENT) == 0);
1731 LASSERT(lock->l_flags & LDLM_FL_CP_REQD);
1732 lock->l_flags &= ~LDLM_FL_CP_REQD;
1733 cfs_list_del_init(&wlock->l_cp_ast);
1734 LDLM_LOCK_RELEASE(wlock);
1737 /* The lock met with no resistance; we're finished. */
1738 if (rc == LDLM_ITER_CONTINUE) {
1739 /* do not grant locks to the liblustre clients: they cannot
1740 * handle ASTs robustly. We need to do this while still
1741 * holding ns_lock to avoid the lock remaining on the res_link
1742 * list (and potentially being added to l_pending_list by an
1743 * AST) when we are going to drop this lock ASAP. */
1744 if (lock->l_export->exp_libclient ||
1745 OBD_FAIL_TIMEOUT(OBD_FAIL_LDLM_GLIMPSE, 2)) {
1746 ldlm_resource_unlink_lock(lock);
1747 err = ELDLM_LOCK_ABORTED;
1749 err = ELDLM_LOCK_REPLACED;
1755 /* Do not grant any lock, but instead send GL callbacks. The extent
1756 * policy nicely created a list of all PW locks for us. We will choose
1757 * the highest of those which are larger than the size in the LVB, if
1758 * any, and perform a glimpse callback. */
1759 res_lvb = res->lr_lvb_data;
1760 LASSERT(res_lvb != NULL);
1761 *reply_lvb = *res_lvb;
1764 * ->ns_lock guarantees that no new locks are granted, and,
1765 * therefore, that res->lr_lvb_data cannot increase beyond the
1766 * end of already granted lock. As a result, it is safe to
1767 * check against "stale" reply_lvb->lvb_size value without
1770 arg.size = reply_lvb->lvb_size;
1772 arg.liblustre = &only_liblustre;
1773 for (idx = 0; idx < LCK_MODE_NUM; idx++) {
1774 tree = &res->lr_itree[idx];
1775 if (tree->lit_mode == LCK_PR)
1778 interval_iterate_reverse(tree->lit_root,
1779 filter_intent_cb, &arg);
1783 /* There were no PW locks beyond the size in the LVB; finished. */
1785 if (only_liblustre) {
1786 /* If we discovered a liblustre client with a PW lock,
1787 * however, the LVB may be out of date! The LVB is
1788 * updated only on glimpse (which we don't do for
1789 * liblustre clients) and cancel (which the client
1790 * obviously has not yet done). So if it has written
1791 * data but kept the lock, the LVB is stale and needs
1792 * to be updated from disk.
1794 * Of course, this will all disappear when we switch to
1795 * taking liblustre locks on the OST. */
1796 ldlm_res_lvbo_update(res, NULL, 1);
1798 RETURN(ELDLM_LOCK_ABORTED);
1802 * This check is for lock taken in filter_prepare_destroy() that does
1803 * not have l_glimpse_ast set. So the logic is: if there is a lock
1804 * with no l_glimpse_ast set, this object is being destroyed already.
1806 * Hence, if you are grabbing DLM locks on the server, always set
1807 * non-NULL glimpse_ast (e.g., ldlm_request.c:ldlm_glimpse_ast()).
1809 if (l->l_glimpse_ast == NULL) {
1810 /* We are racing with unlink(); just return -ENOENT */
1811 rep->lock_policy_res1 = -ENOENT;
1815 LASSERTF(l->l_glimpse_ast != NULL, "l == %p", l);
1816 rc = l->l_glimpse_ast(l, NULL); /* this will update the LVB */
1817 /* Update the LVB from disk if the AST failed (this is a legal race) */
1819 * XXX nikita: situation when ldlm_server_glimpse_ast() failed before
1820 * sending ast is not handled. This can result in lost client writes.
1823 ldlm_res_lvbo_update(res, NULL, 1);
1826 *reply_lvb = *res_lvb;
1830 LDLM_LOCK_RELEASE(l);
1832 RETURN(ELDLM_LOCK_ABORTED);
1836 * per-obd_device iobuf pool.
1838 * To avoid memory deadlocks in low-memory setups, amount of dynamic
1839 * allocations in write-path has to be minimized (see bug 5137).
1841 * Pages, niobuf_local's and niobuf_remote's are pre-allocated and attached to
1842 * OST threads (see ost_thread_{init,done}()).
1844 * "iobuf's" used by filter cannot be attached to OST thread, however, because
1845 * at the OST layer there are only (potentially) multiple obd_device of type
1846 * unknown at the time of OST thread creation.
1848 * Instead array of iobuf's is attached to struct filter_obd (->fo_iobuf_pool
1849 * field). This array has size OST_MAX_THREADS, so that each OST thread uses
1850 * it's very own iobuf.
1854 * filter_kiobuf_pool_init()
1856 * filter_kiobuf_pool_done()
1858 * filter_iobuf_get()
1860 * operate on this array. They are "generic" in a sense that they don't depend
1861 * on actual type of iobuf's (the latter depending on Linux kernel version).
1865 * destroy pool created by filter_iobuf_pool_init
1867 static void filter_iobuf_pool_done(struct filter_obd *filter)
1869 struct filter_iobuf **pool;
1874 pool = filter->fo_iobuf_pool;
1876 for (i = 0; i < filter->fo_iobuf_count; ++ i) {
1877 if (pool[i] != NULL)
1878 filter_free_iobuf(pool[i]);
1880 OBD_FREE(pool, filter->fo_iobuf_count * sizeof pool[0]);
1881 filter->fo_iobuf_pool = NULL;
1886 static int filter_adapt_sptlrpc_conf(struct obd_device *obd, int initial)
1888 struct filter_obd *filter = &obd->u.filter;
1889 struct sptlrpc_rule_set tmp_rset;
1892 sptlrpc_rule_set_init(&tmp_rset);
1893 rc = sptlrpc_conf_target_get_rules(obd, &tmp_rset, initial);
1895 CERROR("obd %s: failed get sptlrpc rules: %d\n",
1900 sptlrpc_target_update_exp_flavor(obd, &tmp_rset);
1902 cfs_write_lock(&filter->fo_sptlrpc_lock);
1903 sptlrpc_rule_set_free(&filter->fo_sptlrpc_rset);
1904 filter->fo_sptlrpc_rset = tmp_rset;
1905 cfs_write_unlock(&filter->fo_sptlrpc_lock);
1911 * pre-allocate pool of iobuf's to be used by filter_{prep,commit}rw_write().
1913 static int filter_iobuf_pool_init(struct filter_obd *filter)
1920 OBD_ALLOC_GFP(filter->fo_iobuf_pool, OSS_THREADS_MAX * sizeof(*pool),
1922 if (filter->fo_iobuf_pool == NULL)
1925 filter->fo_iobuf_count = OSS_THREADS_MAX;
1930 /* Return iobuf allocated for @thread_id. We don't know in advance how
1931 * many threads there will be so we allocate a large empty array and only
1932 * fill in those slots that are actually in use.
1933 * If we haven't allocated a pool entry for this thread before, do so now. */
1934 void *filter_iobuf_get(struct filter_obd *filter, struct obd_trans_info *oti)
1936 int thread_id = (oti && oti->oti_thread) ?
1937 oti->oti_thread->t_id : -1;
1938 struct filter_iobuf *pool = NULL;
1939 struct filter_iobuf **pool_place = NULL;
1941 if (thread_id >= 0) {
1942 LASSERT(thread_id < filter->fo_iobuf_count);
1943 pool = *(pool_place = &filter->fo_iobuf_pool[thread_id]);
1946 if (unlikely(pool == NULL)) {
1947 pool = filter_alloc_iobuf(filter, OBD_BRW_WRITE,
1948 PTLRPC_MAX_BRW_PAGES);
1949 if (pool_place != NULL)
1956 /* mount the file system (secretly). lustre_cfg parameters are:
1959 * 3 = flags: failover=f, failout=n
1962 int filter_common_setup(struct obd_device *obd, struct lustre_cfg* lcfg,
1965 struct filter_obd *filter = &obd->u.filter;
1966 struct vfsmount *mnt;
1967 struct lustre_mount_info *lmi;
1968 struct obd_uuid uuid;
1976 if (lcfg->lcfg_bufcount < 3 ||
1977 LUSTRE_CFG_BUFLEN(lcfg, 1) < 1 ||
1978 LUSTRE_CFG_BUFLEN(lcfg, 2) < 1)
1981 lmi = server_get_mount(obd->obd_name);
1983 /* We already mounted in lustre_fill_super.
1984 lcfg bufs 1, 2, 4 (device, fstype, mount opts) are ignored.*/
1985 struct lustre_sb_info *lsi = s2lsi(lmi->lmi_sb);
1987 obd->obd_fsops = fsfilt_get_ops(MT_STR(lsi->lsi_ldd));
1989 /* old path - used by lctl */
1990 CERROR("Using old MDS mount method\n");
1991 mnt = ll_kern_mount(lustre_cfg_string(lcfg, 2),
1992 MS_NOATIME|MS_NODIRATIME,
1993 lustre_cfg_string(lcfg, 1), option);
1996 LCONSOLE_ERROR_MSG(0x135, "Can't mount disk %s (%d)\n",
1997 lustre_cfg_string(lcfg, 1), rc);
2001 obd->obd_fsops = fsfilt_get_ops(lustre_cfg_string(lcfg, 2));
2003 if (IS_ERR(obd->obd_fsops))
2004 GOTO(err_mntput, rc = PTR_ERR(obd->obd_fsops));
2006 rc = filter_iobuf_pool_init(filter);
2010 if (lvfs_check_rdonly(lvfs_sbdev(mnt->mnt_sb))) {
2011 CERROR("%s: Underlying device is marked as read-only. "
2012 "Setup failed\n", obd->obd_name);
2013 GOTO(err_ops, rc = -EROFS);
2016 /* failover is the default */
2017 obd->obd_replayable = 1;
2019 if (lcfg->lcfg_bufcount > 3 && LUSTRE_CFG_BUFLEN(lcfg, 3) > 0) {
2020 str = lustre_cfg_string(lcfg, 3);
2021 if (strchr(str, 'n')) {
2022 CWARN("%s: recovery disabled\n", obd->obd_name);
2023 obd->obd_replayable = 0;
2027 filter->fo_vfsmnt = mnt;
2028 obd->u.obt.obt_sb = mnt->mnt_sb;
2029 filter->fo_fstype = mnt->mnt_sb->s_type->name;
2030 CDEBUG(D_SUPER, "%s: mnt = %p\n", filter->fo_fstype, mnt);
2032 fsfilt_setup(obd, obd->u.obt.obt_sb);
2034 OBD_SET_CTXT_MAGIC(&obd->obd_lvfs_ctxt);
2035 obd->obd_lvfs_ctxt.pwdmnt = mnt;
2036 obd->obd_lvfs_ctxt.pwd = mnt->mnt_root;
2037 obd->obd_lvfs_ctxt.fs = get_ds();
2038 obd->obd_lvfs_ctxt.cb_ops = filter_lvfs_ops;
2040 cfs_init_mutex(&filter->fo_init_lock);
2041 filter->fo_committed_group = 0;
2042 filter->fo_destroys_in_progress = 0;
2043 for (i = 0; i < 32; i++)
2044 cfs_sema_init(&filter->fo_create_locks[i], 1);
2046 cfs_spin_lock_init(&filter->fo_objidlock);
2047 CFS_INIT_LIST_HEAD(&filter->fo_export_list);
2048 cfs_sema_init(&filter->fo_alloc_lock, 1);
2049 init_brw_stats(&filter->fo_filter_stats);
2050 filter->fo_read_cache = 1; /* enable read-only cache by default */
2051 filter->fo_writethrough_cache = 1; /* enable writethrough cache */
2052 filter->fo_readcache_max_filesize = FILTER_MAX_CACHE_SIZE;
2053 filter->fo_fmd_max_num = FILTER_FMD_MAX_NUM_DEFAULT;
2054 filter->fo_fmd_max_age = FILTER_FMD_MAX_AGE_DEFAULT;
2056 rc = filter_prep(obd);
2060 CFS_INIT_LIST_HEAD(&filter->fo_llog_list);
2061 cfs_spin_lock_init(&filter->fo_llog_list_lock);
2063 filter->fo_fl_oss_capa = 1;
2065 CFS_INIT_LIST_HEAD(&filter->fo_capa_keys);
2066 filter->fo_capa_hash = init_capa_hash();
2067 if (filter->fo_capa_hash == NULL)
2068 GOTO(err_post, rc = -ENOMEM);
2070 sprintf(ns_name, "filter-%s", obd->obd_uuid.uuid);
2071 obd->obd_namespace = ldlm_namespace_new(obd, ns_name, LDLM_NAMESPACE_SERVER,
2072 LDLM_NAMESPACE_GREEDY);
2073 if (obd->obd_namespace == NULL)
2074 GOTO(err_post, rc = -ENOMEM);
2075 obd->obd_namespace->ns_lvbp = obd;
2076 obd->obd_namespace->ns_lvbo = &filter_lvbo;
2077 ldlm_register_intent(obd->obd_namespace, filter_intent_policy);
2079 ptlrpc_init_client(LDLM_CB_REQUEST_PORTAL, LDLM_CB_REPLY_PORTAL,
2080 "filter_ldlm_cb_client", &obd->obd_ldlm_client);
2082 rc = obd_llog_init(obd, &obd->obd_olg, obd, NULL);
2084 CERROR("failed to setup llogging subsystems\n");
2088 cfs_rwlock_init(&filter->fo_sptlrpc_lock);
2089 sptlrpc_rule_set_init(&filter->fo_sptlrpc_rset);
2090 /* do this after llog being initialized */
2091 filter_adapt_sptlrpc_conf(obd, 1);
2093 rc = lquota_setup(filter_quota_interface_ref, obd);
2097 q = bdev_get_queue(mnt->mnt_sb->s_bdev);
2098 if (q->max_sectors < q->max_hw_sectors &&
2099 q->max_sectors < PTLRPC_MAX_BRW_SIZE >> 9)
2100 LCONSOLE_INFO("%s: underlying device %s should be tuned "
2101 "for larger I/O requests: max_sectors = %u "
2102 "could be up to max_hw_sectors=%u\n",
2103 obd->obd_name, mnt->mnt_sb->s_id,
2104 q->max_sectors, q->max_hw_sectors);
2106 uuid_ptr = fsfilt_uuid(obd, obd->u.obt.obt_sb);
2107 if (uuid_ptr != NULL) {
2108 class_uuid_unparse(uuid_ptr, &uuid);
2114 label = fsfilt_get_label(obd, obd->u.obt.obt_sb);
2115 LCONSOLE_INFO("%s: Now serving %s %s%s with recovery %s\n",
2116 obd->obd_name, label ?: str, lmi ? "on " : "",
2117 lmi ? s2lsi(lmi->lmi_sb)->lsi_lmd->lmd_dev : "",
2118 obd->obd_replayable ? "enabled" : "disabled");
2120 if (obd->obd_recovering)
2121 LCONSOLE_WARN("%s: Will be in recovery for at least %d:%.02d, "
2122 "or until %d client%s reconnect%s\n",
2124 obd->obd_recovery_timeout / 60,
2125 obd->obd_recovery_timeout % 60,
2126 obd->obd_max_recoverable_clients,
2127 (obd->obd_max_recoverable_clients == 1) ? "" : "s",
2128 (obd->obd_max_recoverable_clients == 1) ? "s": "");
2136 fsfilt_put_ops(obd->obd_fsops);
2137 filter_iobuf_pool_done(filter);
2139 server_put_mount(obd->obd_name, mnt);
2140 obd->u.obt.obt_sb = 0;
2144 static int filter_setup(struct obd_device *obd, struct lustre_cfg* lcfg)
2146 struct lprocfs_static_vars lvars;
2151 CLASSERT(offsetof(struct obd_device, u.obt) ==
2152 offsetof(struct obd_device, u.filter.fo_obt));
2154 if (!LUSTRE_CFG_BUFLEN(lcfg, 1) || !LUSTRE_CFG_BUFLEN(lcfg, 2))
2157 /* 2.6.9 selinux wants a full option page for do_kern_mount (bug6471) */
2158 OBD_PAGE_ALLOC(page, CFS_ALLOC_STD);
2161 addr = (unsigned long)cfs_page_address(page);
2162 clear_page((void *)addr);
2164 /* lprocfs must be setup before the filter so state can be safely added
2165 * to /proc incrementally as the filter is setup */
2166 lprocfs_filter_init_vars(&lvars);
2167 if (lprocfs_obd_setup(obd, lvars.obd_vars) == 0 &&
2168 lprocfs_alloc_obd_stats(obd, LPROC_FILTER_LAST) == 0) {
2169 /* Init obdfilter private stats here */
2170 lprocfs_counter_init(obd->obd_stats, LPROC_FILTER_READ_BYTES,
2171 LPROCFS_CNTR_AVGMINMAX,
2172 "read_bytes", "bytes");
2173 lprocfs_counter_init(obd->obd_stats, LPROC_FILTER_WRITE_BYTES,
2174 LPROCFS_CNTR_AVGMINMAX,
2175 "write_bytes", "bytes");
2176 lprocfs_counter_init(obd->obd_stats, LPROC_FILTER_GET_PAGE,
2177 LPROCFS_CNTR_AVGMINMAX|LPROCFS_CNTR_STDDEV,
2178 "get_page", "usec");
2179 lprocfs_counter_init(obd->obd_stats, LPROC_FILTER_NO_PAGE,
2180 LPROCFS_CNTR_AVGMINMAX,
2181 "get_page_failures", "num");
2182 lprocfs_counter_init(obd->obd_stats, LPROC_FILTER_CACHE_ACCESS,
2183 LPROCFS_CNTR_AVGMINMAX,
2184 "cache_access", "pages");
2185 lprocfs_counter_init(obd->obd_stats, LPROC_FILTER_CACHE_HIT,
2186 LPROCFS_CNTR_AVGMINMAX,
2187 "cache_hit", "pages");
2188 lprocfs_counter_init(obd->obd_stats, LPROC_FILTER_CACHE_MISS,
2189 LPROCFS_CNTR_AVGMINMAX,
2190 "cache_miss", "pages");
2192 lproc_filter_attach_seqstat(obd);
2193 obd->obd_proc_exports_entry = lprocfs_register("exports",
2194 obd->obd_proc_entry,
2196 if (IS_ERR(obd->obd_proc_exports_entry)) {
2197 rc = PTR_ERR(obd->obd_proc_exports_entry);
2198 CERROR("error %d setting up lprocfs for %s\n",
2200 obd->obd_proc_exports_entry = NULL;
2203 if (obd->obd_proc_exports_entry)
2204 lprocfs_add_simple(obd->obd_proc_exports_entry, "clear",
2205 lprocfs_nid_stats_clear_read,
2206 lprocfs_nid_stats_clear_write, obd, NULL);
2208 memcpy((void *)addr, lustre_cfg_buf(lcfg, 4),
2209 LUSTRE_CFG_BUFLEN(lcfg, 4));
2210 rc = filter_common_setup(obd, lcfg, (void *)addr);
2211 OBD_PAGE_FREE(page);
2214 lprocfs_remove_proc_entry("clear", obd->obd_proc_exports_entry);
2215 lprocfs_free_per_client_stats(obd);
2216 lprocfs_free_obd_stats(obd);
2217 lprocfs_obd_cleanup(obd);
2223 static struct llog_operations filter_mds_ost_repl_logops;
2225 static struct llog_operations filter_size_orig_logops = {
2226 .lop_setup = llog_obd_origin_setup,
2227 .lop_cleanup = llog_obd_origin_cleanup,
2228 .lop_add = llog_obd_origin_add
2231 static int filter_olg_fini(struct obd_llog_group *olg)
2233 struct llog_ctxt *ctxt;
2234 int rc = 0, rc2 = 0;
2237 ctxt = llog_group_get_ctxt(olg, LLOG_MDS_OST_REPL_CTXT);
2239 rc = llog_cleanup(ctxt);
2241 ctxt = llog_group_get_ctxt(olg, LLOG_SIZE_ORIG_CTXT);
2243 rc2 = llog_cleanup(ctxt);
2248 ctxt = llog_group_get_ctxt(olg, LLOG_CONFIG_ORIG_CTXT);
2250 rc2 = llog_cleanup(ctxt);
2259 filter_olg_init(struct obd_device *obd, struct obd_llog_group *olg,
2260 struct obd_device *tgt)
2265 rc = llog_setup(obd, olg, LLOG_MDS_OST_REPL_CTXT, tgt, 0, NULL,
2266 &filter_mds_ost_repl_logops);
2270 rc = llog_setup(obd, olg, LLOG_SIZE_ORIG_CTXT, tgt, 0, NULL,
2271 &filter_size_orig_logops);
2277 filter_olg_fini(olg);
2282 * Init the default olg, which is embeded in the obd_device, for filter.
2285 filter_default_olg_init(struct obd_device *obd, struct obd_llog_group *olg,
2286 struct obd_device *tgt)
2288 struct filter_obd *filter = &obd->u.filter;
2289 struct llog_ctxt *ctxt;
2293 filter->fo_lcm = llog_recov_thread_init(obd->obd_name);
2294 if (!filter->fo_lcm)
2297 filter_mds_ost_repl_logops = llog_client_ops;
2298 filter_mds_ost_repl_logops.lop_cancel = llog_obd_repl_cancel;
2299 filter_mds_ost_repl_logops.lop_connect = llog_obd_repl_connect;
2300 filter_mds_ost_repl_logops.lop_sync = llog_obd_repl_sync;
2302 rc = filter_olg_init(obd, olg, tgt);
2304 GOTO(cleanup_lcm, rc);
2306 rc = llog_setup(obd, olg, LLOG_CONFIG_ORIG_CTXT, tgt, 0, NULL,
2309 GOTO(cleanup_olg, rc);
2311 ctxt = llog_group_get_ctxt(olg, LLOG_MDS_OST_REPL_CTXT);
2313 CERROR("Can't get ctxt for %p:%x\n", olg,
2314 LLOG_MDS_OST_REPL_CTXT);
2315 GOTO(cleanup_olg, rc = -ENODEV);
2317 ctxt->loc_lcm = lcm_get(filter->fo_lcm);
2318 ctxt->llog_proc_cb = filter_recov_log_mds_ost_cb;
2319 llog_ctxt_put(ctxt);
2323 filter_olg_fini(olg);
2325 llog_recov_thread_fini(filter->fo_lcm, 1);
2326 filter->fo_lcm = NULL;
2331 filter_llog_init(struct obd_device *obd, struct obd_llog_group *olg,
2332 struct obd_device *tgt, int *index)
2334 struct filter_obd *filter = &obd->u.filter;
2335 struct llog_ctxt *ctxt;
2339 LASSERT(olg != NULL);
2340 if (olg == &obd->obd_olg)
2341 return filter_default_olg_init(obd, olg, tgt);
2343 LASSERT(filter->fo_lcm != NULL);
2344 rc = filter_olg_init(obd, olg, tgt);
2347 ctxt = llog_group_get_ctxt(olg, LLOG_MDS_OST_REPL_CTXT);
2349 CERROR("Can't get ctxt for %p:%x\n", olg,
2350 LLOG_MDS_OST_REPL_CTXT);
2351 filter_olg_fini(olg);
2354 ctxt->llog_proc_cb = filter_recov_log_mds_ost_cb;
2355 ctxt->loc_lcm = lcm_get(filter->fo_lcm);
2356 llog_ctxt_put(ctxt);
2360 static int filter_llog_finish(struct obd_device *obd, int count)
2362 struct filter_obd *filter = &obd->u.filter;
2363 struct llog_ctxt *ctxt;
2366 ctxt = llog_group_get_ctxt(&obd->obd_olg, LLOG_MDS_OST_REPL_CTXT);
2369 * Make sure that no cached llcds left in recov_thread.
2370 * We actually do sync in disconnect time, but disconnect
2371 * may not come being marked rq_no_resend = 1.
2373 llog_sync(ctxt, NULL);
2376 * Balance class_import_get() in llog_receptor_accept().
2377 * This is safe to do, as llog is already synchronized
2378 * and its import may go.
2380 cfs_mutex_down(&ctxt->loc_sem);
2381 if (ctxt->loc_imp) {
2382 class_import_put(ctxt->loc_imp);
2383 ctxt->loc_imp = NULL;
2385 cfs_mutex_up(&ctxt->loc_sem);
2386 llog_ctxt_put(ctxt);
2389 if (filter->fo_lcm) {
2390 cfs_mutex_down(&ctxt->loc_sem);
2391 llog_recov_thread_fini(filter->fo_lcm, obd->obd_force);
2392 filter->fo_lcm = NULL;
2393 cfs_mutex_up(&ctxt->loc_sem);
2395 RETURN(filter_olg_fini(&obd->obd_olg));
2399 * Find the group llog according to group index in the llog group list.
2401 static struct obd_llog_group *
2402 filter_find_olg_internal(struct filter_obd *filter, int group)
2404 struct obd_llog_group *olg;
2406 LASSERT_SPIN_LOCKED(&filter->fo_llog_list_lock);
2407 cfs_list_for_each_entry(olg, &filter->fo_llog_list, olg_list) {
2408 if (olg->olg_group == group)
2415 * Find the group llog according to group index on the filter
2417 struct obd_llog_group *filter_find_olg(struct obd_device *obd, int group)
2419 struct obd_llog_group *olg = NULL;
2420 struct filter_obd *filter;
2422 filter = &obd->u.filter;
2424 if (group == FILTER_GROUP_LLOG)
2425 RETURN(&obd->obd_olg);
2427 cfs_spin_lock(&filter->fo_llog_list_lock);
2428 olg = filter_find_olg_internal(filter, group);
2429 cfs_spin_unlock(&filter->fo_llog_list_lock);
2434 * Find the llog_group of the filter according to the group. If it can not
2435 * find, create the llog_group, which only happens when mds is being synced
2438 struct obd_llog_group *filter_find_create_olg(struct obd_device *obd, int group)
2440 struct obd_llog_group *olg = NULL;
2441 struct filter_obd *filter;
2444 filter = &obd->u.filter;
2446 if (group == FILTER_GROUP_LLOG)
2447 RETURN(&obd->obd_olg);
2449 cfs_spin_lock(&filter->fo_llog_list_lock);
2450 olg = filter_find_olg_internal(filter, group);
2452 if (olg->olg_initializing) {
2453 GOTO(out_unlock, olg = ERR_PTR(-EBUSY));
2455 GOTO(out_unlock, olg);
2460 GOTO(out_unlock, olg = ERR_PTR(-ENOMEM));
2462 llog_group_init(olg, group);
2463 cfs_list_add(&olg->olg_list, &filter->fo_llog_list);
2464 olg->olg_initializing = 1;
2465 cfs_spin_unlock(&filter->fo_llog_list_lock);
2467 rc = obd_llog_init(obd, olg, obd, NULL);
2469 cfs_spin_lock(&filter->fo_llog_list_lock);
2470 cfs_list_del(&olg->olg_list);
2471 cfs_spin_unlock(&filter->fo_llog_list_lock);
2473 GOTO(out, olg = ERR_PTR(-ENOMEM));
2475 cfs_spin_lock(&filter->fo_llog_list_lock);
2476 olg->olg_initializing = 0;
2477 cfs_spin_unlock(&filter->fo_llog_list_lock);
2478 CDEBUG(D_OTHER, "%s: new llog group %u (0x%p)\n",
2479 obd->obd_name, group, olg);
2484 cfs_spin_unlock(&filter->fo_llog_list_lock);
2488 static int filter_llog_connect(struct obd_export *exp,
2489 struct llogd_conn_body *body)
2491 struct obd_device *obd = exp->exp_obd;
2492 struct llog_ctxt *ctxt;
2493 struct obd_llog_group *olg;
2497 CDEBUG(D_OTHER, "%s: LLog connect for: "LPX64"/"LPX64":%x\n",
2498 obd->obd_name, body->lgdc_logid.lgl_oid,
2499 body->lgdc_logid.lgl_ogr, body->lgdc_logid.lgl_ogen);
2501 olg = filter_find_olg(obd, body->lgdc_logid.lgl_ogr);
2503 CERROR(" %s: can not find olg of group %d\n",
2504 obd->obd_name, (int)body->lgdc_logid.lgl_ogr);
2507 llog_group_set_export(olg, exp);
2509 ctxt = llog_group_get_ctxt(olg, body->lgdc_ctxt_idx);
2510 LASSERTF(ctxt != NULL, "ctxt is not null, ctxt idx %d \n",
2511 body->lgdc_ctxt_idx);
2513 CWARN("%s: Recovery from log "LPX64"/"LPX64":%x\n",
2514 obd->obd_name, body->lgdc_logid.lgl_oid,
2515 body->lgdc_logid.lgl_ogr, body->lgdc_logid.lgl_ogen);
2517 cfs_spin_lock_bh(&obd->obd_processing_task_lock);
2518 obd->u.filter.fo_mds_ost_sync = 1;
2519 cfs_spin_unlock_bh(&obd->obd_processing_task_lock);
2520 rc = llog_connect(ctxt, &body->lgdc_logid,
2521 &body->lgdc_gen, NULL);
2522 llog_ctxt_put(ctxt);
2524 CERROR("failed to connect rc %d idx %d\n", rc,
2525 body->lgdc_ctxt_idx);
2530 static int filter_llog_preclean(struct obd_device *obd)
2532 struct obd_llog_group *olg, *tmp;
2533 struct filter_obd *filter;
2534 cfs_list_t remove_list;
2538 rc = obd_llog_finish(obd, 0);
2540 CERROR("failed to cleanup llogging subsystem\n");
2542 filter = &obd->u.filter;
2543 CFS_INIT_LIST_HEAD(&remove_list);
2545 cfs_spin_lock(&filter->fo_llog_list_lock);
2546 while (!cfs_list_empty(&filter->fo_llog_list)) {
2547 olg = cfs_list_entry(filter->fo_llog_list.next,
2548 struct obd_llog_group, olg_list);
2549 cfs_list_del(&olg->olg_list);
2550 cfs_list_add(&olg->olg_list, &remove_list);
2552 cfs_spin_unlock(&filter->fo_llog_list_lock);
2554 cfs_list_for_each_entry_safe(olg, tmp, &remove_list, olg_list) {
2555 cfs_list_del_init(&olg->olg_list);
2556 rc = filter_olg_fini(olg);
2558 CERROR("failed to cleanup llogging subsystem for %u\n",
2566 static int filter_precleanup(struct obd_device *obd,
2567 enum obd_cleanup_stage stage)
2573 case OBD_CLEANUP_EARLY:
2575 case OBD_CLEANUP_EXPORTS:
2576 /* Stop recovery before namespace cleanup. */
2577 target_recovery_fini(obd);
2578 rc = filter_llog_preclean(obd);
2584 static int filter_cleanup(struct obd_device *obd)
2586 struct filter_obd *filter = &obd->u.filter;
2590 LCONSOLE_WARN("%s: shutting down for failover; client state "
2591 "will be preserved.\n", obd->obd_name);
2593 obd_exports_barrier(obd);
2594 obd_zombie_barrier();
2596 lprocfs_remove_proc_entry("clear", obd->obd_proc_exports_entry);
2597 lprocfs_free_per_client_stats(obd);
2598 lprocfs_free_obd_stats(obd);
2599 lprocfs_obd_cleanup(obd);
2600 lquota_cleanup(filter_quota_interface_ref, obd);
2602 ldlm_namespace_free(obd->obd_namespace, NULL, obd->obd_force);
2603 obd->obd_namespace = NULL;
2605 sptlrpc_rule_set_free(&filter->fo_sptlrpc_rset);
2607 if (obd->u.obt.obt_sb == NULL)
2612 LL_DQUOT_OFF(obd->u.obt.obt_sb);
2613 shrink_dcache_sb(obd->u.obt.obt_sb);
2615 server_put_mount(obd->obd_name, filter->fo_vfsmnt);
2616 obd->u.obt.obt_sb = NULL;
2618 fsfilt_put_ops(obd->obd_fsops);
2620 filter_iobuf_pool_done(filter);
2622 LCONSOLE_INFO("OST %s has stopped.\n", obd->obd_name);
2627 static int filter_connect_internal(struct obd_export *exp,
2628 struct obd_connect_data *data,
2631 struct filter_export_data *fed = &exp->exp_filter_data;
2636 CDEBUG(D_RPCTRACE, "%s: cli %s/%p ocd_connect_flags: "LPX64
2637 " ocd_version: %x ocd_grant: %d ocd_index: %u\n",
2638 exp->exp_obd->obd_name, exp->exp_client_uuid.uuid, exp,
2639 data->ocd_connect_flags, data->ocd_version,
2640 data->ocd_grant, data->ocd_index);
2642 if (fed->fed_group != 0 && fed->fed_group != data->ocd_group) {
2643 CWARN("!!! This export (nid %s) used object group %d "
2644 "earlier; now it's trying to use group %d! This could "
2645 "be a bug in the MDS. Please report to "
2646 "http://bugzilla.lustre.org/\n",
2647 obd_export_nid2str(exp), fed->fed_group,data->ocd_group);
2650 fed->fed_group = data->ocd_group;
2652 data->ocd_connect_flags &= OST_CONNECT_SUPPORTED;
2653 exp->exp_connect_flags = data->ocd_connect_flags;
2654 data->ocd_version = LUSTRE_VERSION_CODE;
2656 /* Kindly make sure the SKIP_ORPHAN flag is from MDS. */
2657 if (!ergo(data->ocd_connect_flags & OBD_CONNECT_SKIP_ORPHAN,
2658 data->ocd_connect_flags & OBD_CONNECT_MDS))
2661 if (exp->exp_connect_flags & OBD_CONNECT_GRANT) {
2662 struct filter_obd *filter = &exp->exp_obd->u.filter;
2663 obd_size left, want;
2665 cfs_spin_lock(&exp->exp_obd->obd_osfs_lock);
2666 left = filter_grant_space_left(exp);
2667 want = data->ocd_grant;
2668 filter_grant(exp, fed->fed_grant, want, left, (reconnect == 0));
2669 data->ocd_grant = fed->fed_grant;
2670 cfs_spin_unlock(&exp->exp_obd->obd_osfs_lock);
2672 CDEBUG(D_CACHE, "%s: cli %s/%p ocd_grant: %d want: "
2673 LPU64" left: "LPU64"\n", exp->exp_obd->obd_name,
2674 exp->exp_client_uuid.uuid, exp,
2675 data->ocd_grant, want, left);
2677 filter->fo_tot_granted_clients ++;
2680 if (data->ocd_connect_flags & OBD_CONNECT_INDEX) {
2681 struct lr_server_data *lsd = class_server_data(exp->exp_obd);
2682 int index = le32_to_cpu(lsd->lsd_ost_index);
2684 if (!(lsd->lsd_feature_compat &
2685 cpu_to_le32(OBD_COMPAT_OST))) {
2686 /* this will only happen on the first connect */
2687 lsd->lsd_ost_index = cpu_to_le32(data->ocd_index);
2688 lsd->lsd_feature_compat |= cpu_to_le32(OBD_COMPAT_OST);
2689 /* sync is not needed here as filter_client_add will
2690 * set exp_need_sync flag */
2691 filter_update_server_data(exp->exp_obd);
2692 } else if (index != data->ocd_index) {
2693 LCONSOLE_ERROR_MSG(0x136, "Connection from %s to index"
2694 " %u doesn't match actual OST index"
2695 " %u in last_rcvd file, bad "
2697 obd_export_nid2str(exp), index,
2701 /* FIXME: Do the same with the MDS UUID and fsd_peeruuid.
2702 * FIXME: We don't strictly need the COMPAT flag for that,
2703 * FIXME: as fsd_peeruuid[0] will tell us if that is set.
2704 * FIXME: We needed it for the index, as index 0 is valid. */
2707 if (OBD_FAIL_CHECK(OBD_FAIL_OST_BRW_SIZE)) {
2708 data->ocd_brw_size = 65536;
2709 } else if (data->ocd_connect_flags & OBD_CONNECT_BRW_SIZE) {
2710 data->ocd_brw_size = min(data->ocd_brw_size,
2711 (__u32)(PTLRPC_MAX_BRW_PAGES << CFS_PAGE_SHIFT));
2712 LASSERT(data->ocd_brw_size);
2715 if (data->ocd_connect_flags & OBD_CONNECT_CKSUM) {
2716 __u32 cksum_types = data->ocd_cksum_types;
2718 /* The client set in ocd_cksum_types the checksum types it
2719 * supports. We have to mask off the algorithms that we don't
2721 if (cksum_types & OBD_CKSUM_ALL)
2722 data->ocd_cksum_types &= OBD_CKSUM_ALL;
2724 data->ocd_cksum_types = OBD_CKSUM_CRC32;
2726 CDEBUG(D_RPCTRACE, "%s: cli %s supports cksum type %x, return "
2727 "%x\n", exp->exp_obd->obd_name,
2728 obd_export_nid2str(exp), cksum_types,
2729 data->ocd_cksum_types);
2731 /* This client does not support OBD_CONNECT_CKSUM
2732 * fall back to CRC32 */
2733 CDEBUG(D_RPCTRACE, "%s: cli %s does not support "
2734 "OBD_CONNECT_CKSUM, CRC32 will be used\n",
2735 exp->exp_obd->obd_name,
2736 obd_export_nid2str(exp));
2742 static int filter_reconnect(const struct lu_env *env,
2743 struct obd_export *exp, struct obd_device *obd,
2744 struct obd_uuid *cluuid,
2745 struct obd_connect_data *data,
2751 if (exp == NULL || obd == NULL || cluuid == NULL)
2754 rc = filter_connect_internal(exp, data, 1);
2756 filter_export_stats_init(obd, exp, localdata);
2761 /* nearly identical to mds_connect */
2762 static int filter_connect(const struct lu_env *env,
2763 struct obd_export **exp, struct obd_device *obd,
2764 struct obd_uuid *cluuid,
2765 struct obd_connect_data *data, void *localdata)
2767 struct lvfs_run_ctxt saved;
2768 struct lustre_handle conn = { 0 };
2769 struct obd_export *lexp;
2770 struct filter_export_data *fed;
2771 struct lsd_client_data *lcd = NULL;
2776 if (exp == NULL || obd == NULL || cluuid == NULL)
2779 rc = class_connect(&conn, obd, cluuid);
2782 lexp = class_conn2export(&conn);
2783 LASSERT(lexp != NULL);
2785 fed = &lexp->exp_filter_data;
2787 rc = filter_connect_internal(lexp, data, 0);
2791 filter_export_stats_init(obd, lexp, localdata);
2792 if (obd->obd_replayable) {
2793 OBD_ALLOC(lcd, sizeof(*lcd));
2795 CERROR("filter: out of memory for client data\n");
2796 GOTO(cleanup, rc = -ENOMEM);
2799 memcpy(lcd->lcd_uuid, cluuid, sizeof(lcd->lcd_uuid));
2801 rc = filter_client_add(obd, lexp, -1);
2806 group = data->ocd_group;
2808 CWARN("%s: Received MDS connection ("LPX64"); group %d\n",
2809 obd->obd_name, lexp->exp_handle.h_cookie, group);
2811 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
2812 rc = filter_read_groups(obd, group, 1);
2813 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
2815 CERROR("can't read group %u\n", group);
2825 fed->fed_lcd = NULL;
2827 class_disconnect(lexp);
2828 lprocfs_exp_cleanup(lexp);
2837 /* Do extra sanity checks for grant accounting. We do this at connect,
2838 * disconnect, and statfs RPC time, so it shouldn't be too bad. We can
2839 * always get rid of it or turn it off when we know accounting is good. */
2840 static void filter_grant_sanity_check(struct obd_device *obd, const char *func)
2842 struct filter_export_data *fed;
2843 struct obd_export *exp;
2844 obd_size maxsize = obd->obd_osfs.os_blocks * obd->obd_osfs.os_bsize;
2845 obd_size tot_dirty = 0, tot_pending = 0, tot_granted = 0;
2846 obd_size fo_tot_dirty, fo_tot_pending, fo_tot_granted;
2848 if (cfs_list_empty(&obd->obd_exports))
2851 /* We don't want to do this for large machines that do lots of
2852 mounts or unmounts. It burns... */
2853 if (obd->obd_num_exports > 100)
2856 cfs_spin_lock(&obd->obd_osfs_lock);
2857 cfs_spin_lock(&obd->obd_dev_lock);
2858 cfs_list_for_each_entry(exp, &obd->obd_exports, exp_obd_chain) {
2860 fed = &exp->exp_filter_data;
2861 if (fed->fed_grant < 0 || fed->fed_pending < 0 ||
2864 if (maxsize > 0) { /* we may not have done a statfs yet */
2865 LASSERTF(fed->fed_grant + fed->fed_pending <= maxsize,
2866 "%s: cli %s/%p %ld+%ld > "LPU64"\n", func,
2867 exp->exp_client_uuid.uuid, exp,
2868 fed->fed_grant, fed->fed_pending, maxsize);
2869 LASSERTF(fed->fed_dirty <= maxsize,
2870 "%s: cli %s/%p %ld > "LPU64"\n", func,
2871 exp->exp_client_uuid.uuid, exp,
2872 fed->fed_dirty, maxsize);
2875 CERROR("%s: cli %s/%p dirty %ld pend %ld grant %ld\n",
2876 obd->obd_name, exp->exp_client_uuid.uuid, exp,
2877 fed->fed_dirty, fed->fed_pending,fed->fed_grant);
2879 CDEBUG(D_CACHE, "%s: cli %s/%p dirty %ld pend %ld grant %ld\n",
2880 obd->obd_name, exp->exp_client_uuid.uuid, exp,
2881 fed->fed_dirty, fed->fed_pending,fed->fed_grant);
2882 tot_granted += fed->fed_grant + fed->fed_pending;
2883 tot_pending += fed->fed_pending;
2884 tot_dirty += fed->fed_dirty;
2886 fo_tot_granted = obd->u.filter.fo_tot_granted;
2887 fo_tot_pending = obd->u.filter.fo_tot_pending;
2888 fo_tot_dirty = obd->u.filter.fo_tot_dirty;
2889 cfs_spin_unlock(&obd->obd_dev_lock);
2890 cfs_spin_unlock(&obd->obd_osfs_lock);
2892 /* Do these assertions outside the spinlocks so we don't kill system */
2893 if (tot_granted != fo_tot_granted)
2894 CERROR("%s: tot_granted "LPU64" != fo_tot_granted "LPU64"\n",
2895 func, tot_granted, fo_tot_granted);
2896 if (tot_pending != fo_tot_pending)
2897 CERROR("%s: tot_pending "LPU64" != fo_tot_pending "LPU64"\n",
2898 func, tot_pending, fo_tot_pending);
2899 if (tot_dirty != fo_tot_dirty)
2900 CERROR("%s: tot_dirty "LPU64" != fo_tot_dirty "LPU64"\n",
2901 func, tot_dirty, fo_tot_dirty);
2902 if (tot_pending > tot_granted)
2903 CERROR("%s: tot_pending "LPU64" > tot_granted "LPU64"\n",
2904 func, tot_pending, tot_granted);
2905 if (tot_granted > maxsize)
2906 CERROR("%s: tot_granted "LPU64" > maxsize "LPU64"\n",
2907 func, tot_granted, maxsize);
2908 if (tot_dirty > maxsize)
2909 CERROR("%s: tot_dirty "LPU64" > maxsize "LPU64"\n",
2910 func, tot_dirty, maxsize);
2913 /* Remove this client from the grant accounting totals. We also remove
2914 * the export from the obd device under the osfs and dev locks to ensure
2915 * that the filter_grant_sanity_check() calculations are always valid.
2916 * The client should do something similar when it invalidates its import. */
2917 static void filter_grant_discard(struct obd_export *exp)
2919 struct obd_device *obd = exp->exp_obd;
2920 struct filter_obd *filter = &obd->u.filter;
2921 struct filter_export_data *fed = &exp->exp_filter_data;
2923 cfs_spin_lock(&obd->obd_osfs_lock);
2924 LASSERTF(filter->fo_tot_granted >= fed->fed_grant,
2925 "%s: tot_granted "LPU64" cli %s/%p fed_grant %ld\n",
2926 obd->obd_name, filter->fo_tot_granted,
2927 exp->exp_client_uuid.uuid, exp, fed->fed_grant);
2928 filter->fo_tot_granted -= fed->fed_grant;
2929 LASSERTF(filter->fo_tot_pending >= fed->fed_pending,
2930 "%s: tot_pending "LPU64" cli %s/%p fed_pending %ld\n",
2931 obd->obd_name, filter->fo_tot_pending,
2932 exp->exp_client_uuid.uuid, exp, fed->fed_pending);
2933 /* fo_tot_pending is handled in filter_grant_commit as bulk finishes */
2934 LASSERTF(filter->fo_tot_dirty >= fed->fed_dirty,
2935 "%s: tot_dirty "LPU64" cli %s/%p fed_dirty %ld\n",
2936 obd->obd_name, filter->fo_tot_dirty,
2937 exp->exp_client_uuid.uuid, exp, fed->fed_dirty);
2938 filter->fo_tot_dirty -= fed->fed_dirty;
2942 cfs_spin_unlock(&obd->obd_osfs_lock);
2945 static int filter_destroy_export(struct obd_export *exp)
2947 struct filter_export_data *fed = &exp->exp_filter_data;
2950 if (fed->fed_pending)
2951 CERROR("%s: cli %s/%p has %lu pending on destroyed export\n",
2952 exp->exp_obd->obd_name, exp->exp_client_uuid.uuid,
2953 exp, fed->fed_pending);
2955 lquota_clearinfo(filter_quota_interface_ref, exp, exp->exp_obd);
2957 target_destroy_export(exp);
2958 ldlm_destroy_export(exp);
2960 if (obd_uuid_equals(&exp->exp_client_uuid, &exp->exp_obd->obd_uuid))
2963 lut_client_free(exp);
2965 if (!exp->exp_obd->obd_replayable)
2966 fsfilt_sync(exp->exp_obd, exp->exp_obd->u.obt.obt_sb);
2968 filter_grant_discard(exp);
2969 filter_fmd_cleanup(exp);
2971 if (exp->exp_connect_flags & OBD_CONNECT_GRANT_SHRINK) {
2972 struct filter_obd *filter = &exp->exp_obd->u.filter;
2973 if (filter->fo_tot_granted_clients > 0)
2974 filter->fo_tot_granted_clients --;
2977 if (!(exp->exp_flags & OBD_OPT_FORCE))
2978 filter_grant_sanity_check(exp->exp_obd, __FUNCTION__);
2983 static void filter_sync_llogs(struct obd_device *obd, struct obd_export *dexp)
2985 struct obd_llog_group *olg_min, *olg;
2986 struct filter_obd *filter;
2987 int worked = -1, group;
2988 struct llog_ctxt *ctxt;
2991 filter = &obd->u.filter;
2993 /* we can't sync log holding spinlock. also, we do not want to get
2994 * into livelock. so we do following: loop over MDS's exports in
2995 * group order and skip already synced llogs -bzzz */
2997 /* look for group with min. number, but > worked */
3000 cfs_spin_lock(&filter->fo_llog_list_lock);
3001 cfs_list_for_each_entry(olg, &filter->fo_llog_list, olg_list) {
3002 if (olg->olg_group <= worked) {
3003 /* this group is already synced */
3006 if (group < olg->olg_group) {
3007 /* we have group with smaller number to sync */
3010 /* store current minimal group */
3012 group = olg->olg_group;
3014 cfs_spin_unlock(&filter->fo_llog_list_lock);
3016 if (olg_min == NULL)
3019 worked = olg_min->olg_group;
3020 if (olg_min->olg_exp &&
3021 (dexp == olg_min->olg_exp || dexp == NULL)) {
3023 ctxt = llog_group_get_ctxt(olg_min,
3024 LLOG_MDS_OST_REPL_CTXT);
3026 err = llog_sync(ctxt, olg_min->olg_exp);
3027 llog_ctxt_put(ctxt);
3029 CERROR("error flushing logs to MDS: "
3034 } while (olg_min != NULL);
3037 /* Also incredibly similar to mds_disconnect */
3038 static int filter_disconnect(struct obd_export *exp)
3040 struct obd_device *obd = exp->exp_obd;
3045 class_export_get(exp);
3047 if (!(exp->exp_flags & OBD_OPT_FORCE))
3048 filter_grant_sanity_check(obd, __FUNCTION__);
3049 filter_grant_discard(exp);
3051 /* Flush any remaining cancel messages out to the target */
3052 filter_sync_llogs(obd, exp);
3054 lquota_clearinfo(filter_quota_interface_ref, exp, exp->exp_obd);
3056 rc = server_disconnect_export(exp);
3058 if (exp->exp_obd->obd_replayable)
3059 filter_client_del(exp);
3061 fsfilt_sync(obd, obd->u.obt.obt_sb);
3063 class_export_put(exp);
3067 /* reverse import is changed, sync all cancels */
3068 static void filter_revimp_update(struct obd_export *exp)
3073 class_export_get(exp);
3075 /* flush any remaining cancel messages out to the target */
3076 filter_sync_llogs(exp->exp_obd, exp);
3077 class_export_put(exp);
3081 static int filter_ping(struct obd_export *exp)
3083 filter_fmd_expire(exp);
3087 struct dentry *__filter_oa2dentry(struct obd_device *obd, struct obdo *oa,
3088 const char *what, int quiet)
3090 struct dentry *dchild = NULL;
3093 if (oa->o_valid & OBD_MD_FLGROUP)
3096 dchild = filter_fid2dentry(obd, NULL, group, oa->o_id);
3098 if (IS_ERR(dchild)) {
3099 CERROR("%s error looking up object: "LPU64":"LPU64"\n",
3100 what, group, oa->o_id);
3104 if (dchild->d_inode == NULL) {
3106 CERROR("%s: %s on non-existent object: "LPU64"\n",
3107 obd->obd_name, what, oa->o_id);
3109 RETURN(ERR_PTR(-ENOENT));
3115 static int filter_getattr(struct obd_export *exp, struct obd_info *oinfo)
3117 struct dentry *dentry = NULL;
3118 struct obd_device *obd;
3122 LASSERT(oinfo->oi_oa->o_valid & OBD_MD_FLGROUP);
3123 rc = filter_auth_capa(exp, NULL, oinfo->oi_oa->o_gr,
3124 oinfo_capa(oinfo), CAPA_OPC_META_READ);
3128 obd = class_exp2obd(exp);
3130 CDEBUG(D_IOCTL, "invalid client export %p\n", exp);
3134 dentry = filter_oa2dentry(obd, oinfo->oi_oa);
3136 RETURN(PTR_ERR(dentry));
3138 /* Limit the valid bits in the return data to what we actually use */
3139 oinfo->oi_oa->o_valid = OBD_MD_FLID;
3140 obdo_from_inode(oinfo->oi_oa, dentry->d_inode, FILTER_VALID_FLAGS);
3146 /* this should be enabled/disabled in condition to enabled/disabled large
3147 * inodes (fast EAs) in backing store FS. */
3148 int filter_update_fidea(struct obd_export *exp, struct inode *inode,
3149 void *handle, struct obdo *oa)
3151 struct obd_device *obd = exp->exp_obd;
3155 if (oa->o_valid & OBD_MD_FLFID) {
3156 struct filter_fid ff;
3158 if (!(oa->o_valid & OBD_MD_FLGROUP))
3160 /* packing fid and converting it to LE for storing into EA.
3161 * Here ->o_stripe_idx should be filled by LOV and rest of
3162 * fields - by client. */
3163 ff.ff_fid.id = cpu_to_le64(oa->o_fid);
3164 ff.ff_fid.f_type = cpu_to_le32(oa->o_stripe_idx);
3165 ff.ff_fid.generation = cpu_to_le32(oa->o_generation);
3166 ff.ff_objid = cpu_to_le64(oa->o_id);
3167 ff.ff_group = cpu_to_le64(oa->o_gr);
3169 CDEBUG(D_INODE, "storing filter fid EA ("LPU64"/%u/%u"
3170 LPU64"/"LPU64")\n", oa->o_fid, oa->o_stripe_idx,
3171 oa->o_generation, oa->o_id, oa->o_gr);
3173 rc = fsfilt_set_md(obd, inode, handle, &ff, sizeof(ff), "fid");
3175 CERROR("store fid in object failed! rc: %d\n", rc);
3177 CDEBUG(D_HA, "OSS object without fid info!\n");
3183 /* this is called from filter_truncate() until we have filter_punch() */
3184 int filter_setattr_internal(struct obd_export *exp, struct dentry *dentry,
3185 struct obdo *oa, struct obd_trans_info *oti)
3187 unsigned int orig_ids[MAXQUOTAS] = {0, 0};
3188 struct llog_cookie *fcc = NULL;
3189 struct filter_obd *filter;
3190 int rc, err, sync = 0;
3191 loff_t old_size = 0;
3192 unsigned int ia_valid;
3193 struct inode *inode;
3194 struct page *page = NULL;
3199 LASSERT(dentry != NULL);
3200 LASSERT(!IS_ERR(dentry));
3202 inode = dentry->d_inode;
3203 LASSERT(inode != NULL);
3205 filter = &exp->exp_obd->u.filter;
3206 iattr_from_obdo(&iattr, oa, oa->o_valid);
3207 ia_valid = iattr.ia_valid;
3209 if (oa->o_valid & OBD_MD_FLCOOKIE) {
3210 OBD_ALLOC(fcc, sizeof(*fcc));
3212 *fcc = oa->o_lcookie;
3214 if (ia_valid & (ATTR_SIZE | ATTR_UID | ATTR_GID)) {
3216 /* Filter truncates and writes are serialized by
3217 * i_alloc_sem, see the comment in
3218 * filter_preprw_write.*/
3219 if (ia_valid & ATTR_SIZE)
3220 down_write(&inode->i_alloc_sem);
3221 LOCK_INODE_MUTEX(inode);
3222 old_size = i_size_read(inode);
3225 /* VBR: version recovery check */
3226 rc = filter_version_get_check(exp, oti, inode);
3228 GOTO(out_unlock, rc);
3230 /* Let's pin the last page so that ldiskfs_truncate
3231 * should not start GFP_FS allocation. */
3232 if (ia_valid & ATTR_SIZE) {
3233 page = grab_cache_page(inode->i_mapping,
3234 iattr.ia_size >> PAGE_CACHE_SHIFT);
3236 GOTO(out_unlock, rc = -ENOMEM);
3241 /* If the inode still has SUID+SGID bits set (see filter_precreate())
3242 * then we will accept the UID+GID sent by the client during write for
3243 * initializing the ownership of this inode. We only allow this to
3244 * happen once so clear these bits in setattr. In 2.6 kernels it is
3245 * possible to get ATTR_UID and ATTR_GID separately, so we only clear
3246 * the flags that are actually being set. */
3247 if (ia_valid & (ATTR_UID | ATTR_GID)) {
3248 CDEBUG(D_INODE, "update UID/GID to %lu/%lu\n",
3249 (unsigned long)oa->o_uid, (unsigned long)oa->o_gid);
3251 if ((inode->i_mode & S_ISUID) && (ia_valid & ATTR_UID)) {
3252 if (!(ia_valid & ATTR_MODE)) {
3253 iattr.ia_mode = inode->i_mode;
3254 iattr.ia_valid |= ATTR_MODE;
3256 iattr.ia_mode &= ~S_ISUID;
3258 if ((inode->i_mode & S_ISGID) && (ia_valid & ATTR_GID)) {
3259 if (!(iattr.ia_valid & ATTR_MODE)) {
3260 iattr.ia_mode = inode->i_mode;
3261 iattr.ia_valid |= ATTR_MODE;
3263 iattr.ia_mode &= ~S_ISGID;
3266 orig_ids[USRQUOTA] = inode->i_uid;
3267 orig_ids[GRPQUOTA] = inode->i_gid;
3268 handle = fsfilt_start_log(exp->exp_obd, inode,
3269 FSFILT_OP_SETATTR, oti, 1);
3271 GOTO(out_unlock, rc = PTR_ERR(handle));
3273 /* update inode EA only once when inode is suid bit marked. As
3274 * on 2.6.x UID and GID may be set separately, we check here
3275 * only one of them to avoid double setting. */
3276 if (inode->i_mode & S_ISUID)
3277 filter_update_fidea(exp, inode, handle, oa);
3279 handle = fsfilt_start(exp->exp_obd, inode,
3280 FSFILT_OP_SETATTR, oti);
3282 GOTO(out_unlock, rc = PTR_ERR(handle));
3284 if (oa->o_valid & OBD_MD_FLFLAGS) {
3285 rc = fsfilt_iocontrol(exp->exp_obd, dentry,
3286 FSFILT_IOC_SETFLAGS, (long)&oa->o_flags);
3288 rc = fsfilt_setattr(exp->exp_obd, dentry, handle, &iattr, 1);
3290 /* set cancel cookie callback function */
3291 sync = fsfilt_add_journal_cb(exp->exp_obd, 0, handle,
3292 filter_cancel_cookies_cb,
3296 if (OBD_FAIL_CHECK(OBD_FAIL_OST_SETATTR_CREDITS))
3297 fsfilt_extend(exp->exp_obd, inode, 0, handle);
3299 /* The truncate might have used up our transaction credits. Make
3300 * sure we have one left for the last_rcvd update. */
3301 err = fsfilt_extend(exp->exp_obd, inode, 1, handle);
3303 rc = filter_finish_transno(exp, inode, oti, rc, sync);
3305 filter_cancel_cookies_cb(exp->exp_obd, 0, fcc, rc);
3309 err = fsfilt_commit(exp->exp_obd, inode, handle, 0);
3311 CERROR("error on commit, err = %d\n", err);
3318 /* For a partial-page truncate flush the page to disk immediately
3319 * to avoid data corruption during direct disk write. b=17397 */
3320 if (!sync && (iattr.ia_valid & ATTR_SIZE) &&
3321 old_size != iattr.ia_size && (iattr.ia_size & ~CFS_PAGE_MASK)) {
3322 err = filemap_fdatawrite_range(inode->i_mapping, iattr.ia_size,
3332 page_cache_release(page);
3334 if (ia_valid & (ATTR_SIZE | ATTR_UID | ATTR_GID))
3335 UNLOCK_INODE_MUTEX(inode);
3336 if (ia_valid & ATTR_SIZE)
3337 up_write(&inode->i_alloc_sem);
3339 OBD_FREE(fcc, sizeof(*fcc));
3341 /* trigger quota release */
3342 if (ia_valid & (ATTR_SIZE | ATTR_UID | ATTR_GID)) {
3343 unsigned int cur_ids[MAXQUOTAS] = {oa->o_uid, oa->o_gid};
3344 int rc2 = lquota_adjust(filter_quota_interface_ref,
3345 exp->exp_obd, cur_ids,
3346 orig_ids, rc, FSFILT_OP_SETATTR);
3347 CDEBUG(rc2 ? D_ERROR : D_QUOTA,
3348 "filter adjust qunit. (rc:%d)\n", rc2);
3353 /* this is called from filter_truncate() until we have filter_punch() */
3354 int filter_setattr(struct obd_export *exp, struct obd_info *oinfo,
3355 struct obd_trans_info *oti)
3357 struct obdo *oa = oinfo->oi_oa;
3358 struct lustre_capa *capa = oinfo_capa(oinfo);
3359 struct ldlm_res_id res_id;
3360 struct filter_mod_data *fmd;
3361 struct lvfs_run_ctxt saved;
3362 struct filter_obd *filter;
3363 struct ldlm_resource *res;
3364 struct dentry *dentry;
3365 __u64 opc = CAPA_OPC_META_WRITE;
3369 if (oa->o_valid & OBD_FL_TRUNC)
3370 opc |= CAPA_OPC_OSS_TRUNC;
3372 LASSERT(oa->o_valid & OBD_MD_FLGROUP);
3373 rc = filter_auth_capa(exp, NULL, oa->o_gr, capa, opc);
3377 if (oa->o_valid & (OBD_MD_FLUID | OBD_MD_FLGID)) {
3378 rc = filter_capa_fixoa(exp, oa, oa->o_gr, capa);
3383 osc_build_res_name(oa->o_id, oa->o_gr, &res_id);
3384 /* This would be very bad - accidentally truncating a file when
3385 * changing the time or similar - bug 12203. */
3386 if (oa->o_valid & OBD_MD_FLSIZE &&
3387 oinfo->oi_policy.l_extent.end != OBD_OBJECT_EOF) {
3388 static char mdsinum[48];
3390 if (oa->o_valid & OBD_MD_FLFID)
3391 snprintf(mdsinum, sizeof(mdsinum) - 1,
3392 " of inode "LPU64"/%u", oa->o_fid,
3397 CERROR("%s: setattr from %s trying to truncate objid "LPU64
3399 exp->exp_obd->obd_name, obd_export_nid2str(exp),
3404 dentry = __filter_oa2dentry(exp->exp_obd, oa, __FUNCTION__, 1);
3406 RETURN(PTR_ERR(dentry));
3408 filter = &exp->exp_obd->u.filter;
3409 push_ctxt(&saved, &exp->exp_obd->obd_lvfs_ctxt, NULL);
3412 * We need to be atomic against a concurrent write
3413 * (which takes the semaphore for reading). fmd_mactime_xid
3414 * checks will have no effect if a write request with lower
3415 * xid starts just before a setattr and finishes later than
3416 * the setattr (see bug 21489, comment 27).
3419 (OBD_MD_FLMTIME | OBD_MD_FLATIME | OBD_MD_FLCTIME)) {
3420 down_write(&dentry->d_inode->i_alloc_sem);
3421 fmd = filter_fmd_get(exp, oa->o_id, oa->o_gr);
3422 if (fmd && fmd->fmd_mactime_xid < oti->oti_xid)
3423 fmd->fmd_mactime_xid = oti->oti_xid;
3424 filter_fmd_put(exp, fmd);
3425 up_write(&dentry->d_inode->i_alloc_sem);
3428 /* setting objects attributes (including owner/group) */
3429 rc = filter_setattr_internal(exp, dentry, oa, oti);
3431 GOTO(out_unlock, rc);
3433 res = ldlm_resource_get(exp->exp_obd->obd_namespace, NULL,
3434 &res_id, LDLM_EXTENT, 0);
3437 LDLM_RESOURCE_ADDREF(res);
3438 rc = ldlm_res_lvbo_update(res, NULL, 0);
3439 LDLM_RESOURCE_DELREF(res);
3440 ldlm_resource_putref(res);
3443 oa->o_valid = OBD_MD_FLID;
3445 /* Quota release need uid/gid info */
3446 obdo_from_inode(oa, dentry->d_inode,
3447 FILTER_VALID_FLAGS | OBD_MD_FLUID | OBD_MD_FLGID);
3452 pop_ctxt(&saved, &exp->exp_obd->obd_lvfs_ctxt, NULL);
3456 /* XXX identical to osc_unpackmd */
3457 static int filter_unpackmd(struct obd_export *exp, struct lov_stripe_md **lsmp,
3458 struct lov_mds_md *lmm, int lmm_bytes)
3464 if (lmm_bytes < sizeof (*lmm)) {
3465 CERROR("lov_mds_md too small: %d, need %d\n",
3466 lmm_bytes, (int)sizeof(*lmm));
3469 /* XXX LOV_MAGIC etc check? */
3471 if (lmm->lmm_object_id == cpu_to_le64(0)) {
3472 CERROR("lov_mds_md: zero lmm_object_id\n");
3477 lsm_size = lov_stripe_md_size(1);
3481 if (*lsmp != NULL && lmm == NULL) {
3482 OBD_FREE((*lsmp)->lsm_oinfo[0], sizeof(struct lov_oinfo));
3483 OBD_FREE(*lsmp, lsm_size);
3488 if (*lsmp == NULL) {
3489 OBD_ALLOC(*lsmp, lsm_size);
3493 OBD_ALLOC((*lsmp)->lsm_oinfo[0], sizeof(struct lov_oinfo));
3494 if ((*lsmp)->lsm_oinfo[0] == NULL) {
3495 OBD_FREE(*lsmp, lsm_size);
3498 loi_init((*lsmp)->lsm_oinfo[0]);
3502 /* XXX zero *lsmp? */
3503 (*lsmp)->lsm_object_id = le64_to_cpu (lmm->lmm_object_id);
3504 LASSERT((*lsmp)->lsm_object_id);
3507 (*lsmp)->lsm_maxbytes = LUSTRE_STRIPE_MAXBYTES;
3512 /* caller must hold fo_create_locks[oa->o_gr] */
3513 static int filter_destroy_precreated(struct obd_export *exp, struct obdo *oa,
3514 struct filter_obd *filter)
3516 struct obdo doa = { 0 }; /* XXX obdo on stack */
3523 LASSERT_MDS_GROUP(oa->o_gr);
3524 LASSERT(oa->o_valid & OBD_MD_FLGROUP);
3525 LASSERT(down_trylock(&filter->fo_create_locks[oa->o_gr]) != 0);
3527 memset(&doa, 0, sizeof(doa));
3529 doa.o_valid |= OBD_MD_FLGROUP;
3530 doa.o_gr = oa->o_gr;
3531 doa.o_mode = S_IFREG;
3533 if (!cfs_test_bit(doa.o_gr, &filter->fo_destroys_in_progress)) {
3534 CERROR("%s:["LPU64"] destroys_in_progress already cleared\n",
3535 exp->exp_obd->obd_name, doa.o_gr);
3539 last = filter_last_id(filter, doa.o_gr);
3541 skip_orphan = !!(exp->exp_connect_flags & OBD_CONNECT_SKIP_ORPHAN);
3543 CDEBUG(D_HA, "%s: deleting orphan objects from "LPU64" to "LPU64"%s\n",
3544 exp->exp_obd->obd_name, oa->o_id + 1, last,
3545 skip_orphan ? ", orphan objids won't be reused any more." : ".");
3547 for (id = last; id > oa->o_id; id--) {
3549 rc = filter_destroy(exp, &doa, NULL, NULL, NULL, NULL);
3550 if (rc && rc != -ENOENT) /* this is pretty fatal... */
3551 CEMERG("error destroying precreate objid "LPU64": %d\n",
3554 /* update last_id on disk periodically so that if we restart
3555 * we don't need to re-scan all of the just-deleted objects. */
3556 if ((id & 511) == 0 && !skip_orphan) {
3557 filter_set_last_id(filter, id - 1, doa.o_gr);
3558 filter_update_last_objid(exp->exp_obd, doa.o_gr, 0);
3562 CDEBUG(D_HA, "%s: after destroy: set last_objids["LPU64"] = "LPU64"\n",
3563 exp->exp_obd->obd_name, doa.o_gr, oa->o_id);
3566 filter_set_last_id(filter, id, doa.o_gr);
3567 rc = filter_update_last_objid(exp->exp_obd, doa.o_gr, 1);
3569 /* don't reuse orphan object, return last used objid */
3573 cfs_clear_bit(doa.o_gr, &filter->fo_destroys_in_progress);
3578 static int filter_precreate(struct obd_device *obd, struct obdo *oa,
3579 obd_gr group, int *num);
3580 /* returns a negative error or a nonnegative number of files to create */
3581 static int filter_handle_precreate(struct obd_export *exp, struct obdo *oa,
3582 obd_gr group, struct obd_trans_info *oti)
3584 struct obd_device *obd = exp->exp_obd;
3585 struct filter_obd *filter = &obd->u.filter;
3589 /* delete orphans request */
3590 if ((oa->o_valid & OBD_MD_FLFLAGS) && (oa->o_flags & OBD_FL_DELORPHAN)){
3591 obd_id last = filter_last_id(filter, group);
3593 if (oti->oti_conn_cnt < exp->exp_conn_cnt) {
3594 CERROR("%s: dropping old orphan cleanup request\n",
3598 /* This causes inflight precreates to abort and drop lock */
3599 cfs_set_bit(group, &filter->fo_destroys_in_progress);
3600 cfs_down(&filter->fo_create_locks[group]);
3601 if (!cfs_test_bit(group, &filter->fo_destroys_in_progress)) {
3602 CERROR("%s:["LPU64"] destroys_in_progress already cleared\n",
3603 exp->exp_obd->obd_name, group);
3604 cfs_up(&filter->fo_create_locks[group]);
3607 diff = oa->o_id - last;
3608 CDEBUG(D_HA, "filter_last_id() = "LPU64" -> diff = %d\n",
3611 if (-diff > OST_MAX_PRECREATE) {
3612 CERROR("%s: ignoring bogus orphan destroy request: "
3613 "obdid "LPU64" last_id "LPU64"\n", obd->obd_name,
3615 /* FIXME: should reset precreate_next_id on MDS */
3616 GOTO(out, rc = -EINVAL);
3619 rc = filter_destroy_precreated(exp, oa, filter);
3621 CERROR("%s: unable to write lastobjid, but "
3622 "orphans were deleted\n", obd->obd_name);
3625 /* XXX: Used by MDS for the first time! */
3626 cfs_clear_bit(group, &filter->fo_destroys_in_progress);
3629 cfs_down(&filter->fo_create_locks[group]);
3630 if (oti->oti_conn_cnt < exp->exp_conn_cnt) {
3631 CERROR("%s: dropping old precreate request\n",
3635 /* only precreate if group == 0 and o_id is specfied */
3636 if (!filter_group_is_mds(group) || oa->o_id == 0)
3639 diff = oa->o_id - filter_last_id(filter, group);
3640 CDEBUG(D_RPCTRACE, "filter_last_id() = "LPU64" -> diff = %d\n",
3641 filter_last_id(filter, group), diff);
3643 LASSERTF(diff >= 0,"%s: "LPU64" - "LPU64" = %d\n",obd->obd_name,
3644 oa->o_id, filter_last_id(filter, group), diff);
3648 oa->o_id = filter_last_id(&obd->u.filter, group);
3649 rc = filter_precreate(obd, oa, group, &diff);
3650 oa->o_id = filter_last_id(&obd->u.filter, group);
3652 oa->o_valid = OBD_MD_FLID | OBD_MD_FLGROUP;
3655 /* else diff == 0 */
3658 cfs_up(&filter->fo_create_locks[group]);
3662 static int filter_statfs(struct obd_device *obd, struct obd_statfs *osfs,
3663 __u64 max_age, __u32 flags)
3665 struct filter_obd *filter = &obd->u.filter;
3666 int blockbits = obd->u.obt.obt_sb->s_blocksize_bits;
3670 /* at least try to account for cached pages. its still racey and
3671 * might be under-reporting if clients haven't announced their
3672 * caches with brw recently */
3673 cfs_spin_lock(&obd->obd_osfs_lock);
3674 rc = fsfilt_statfs(obd, obd->u.obt.obt_sb, max_age);
3675 memcpy(osfs, &obd->obd_osfs, sizeof(*osfs));
3676 cfs_spin_unlock(&obd->obd_osfs_lock);
3678 CDEBUG(D_SUPER | D_CACHE, "blocks cached "LPU64" granted "LPU64
3679 " pending "LPU64" free "LPU64" avail "LPU64"\n",
3680 filter->fo_tot_dirty, filter->fo_tot_granted,
3681 filter->fo_tot_pending,
3682 osfs->os_bfree << blockbits, osfs->os_bavail << blockbits);
3684 filter_grant_sanity_check(obd, __FUNCTION__);
3686 osfs->os_bavail -= min(osfs->os_bavail, GRANT_FOR_LLOG(obd) +
3687 ((filter->fo_tot_dirty + filter->fo_tot_pending +
3688 osfs->os_bsize - 1) >> blockbits));
3690 if (OBD_FAIL_CHECK(OBD_FAIL_OST_ENOSPC)) {
3691 struct lr_server_data *lsd = class_server_data(obd);
3692 int index = le32_to_cpu(lsd->lsd_ost_index);
3694 if (obd_fail_val == -1 ||
3695 index == obd_fail_val)
3696 osfs->os_bfree = osfs->os_bavail = 2;
3697 else if (obd_fail_loc & OBD_FAIL_ONCE)
3698 obd_fail_loc &= ~OBD_FAILED; /* reset flag */
3701 /* set EROFS to state field if FS is mounted as RDONLY. The goal is to
3702 * stop creating files on MDS if OST is not good shape to create
3706 if (filter->fo_obt.obt_sb->s_flags & MS_RDONLY)
3707 osfs->os_state = OS_STATE_READONLY;
3709 if (filter->fo_raid_degraded)
3710 osfs->os_state |= OS_STATE_DEGRADED;
3714 static int filter_use_existing_obj(struct obd_device *obd,
3715 struct dentry *dchild, void **handle,
3718 struct inode *inode = dchild->d_inode;
3722 if ((inode->i_mode & (S_ISUID | S_ISGID)) == (S_ISUID|S_ISGID))
3725 *handle = fsfilt_start_log(obd, inode, FSFILT_OP_SETATTR, NULL, 1);
3726 if (IS_ERR(*handle))
3727 return PTR_ERR(*handle);
3729 iattr.ia_valid = ATTR_MODE;
3730 iattr.ia_mode = S_ISUID | S_ISGID |0666;
3731 rc = fsfilt_setattr(obd, dchild, *handle, &iattr, 1);
3738 static __u64 filter_calc_free_inodes(struct obd_device *obd)
3741 __u64 os_ffree = -1;
3743 cfs_spin_lock(&obd->obd_osfs_lock);
3744 rc = fsfilt_statfs(obd, obd->u.obt.obt_sb, cfs_time_shift_64(1));
3746 os_ffree = obd->obd_osfs.os_ffree;
3747 cfs_spin_unlock(&obd->obd_osfs_lock);
3752 /* We rely on the fact that only one thread will be creating files in a given
3753 * group at a time, which is why we don't need an atomic filter_get_new_id.
3754 * Even if we had that atomic function, the following race would exist:
3756 * thread 1: gets id x from filter_next_id
3757 * thread 2: gets id (x + 1) from filter_next_id
3758 * thread 2: creates object (x + 1)
3759 * thread 1: tries to create object x, gets -ENOSPC
3761 * Caller must hold fo_create_locks[group]
3763 static int filter_precreate(struct obd_device *obd, struct obdo *oa,
3764 obd_gr group, int *num)
3766 struct dentry *dchild = NULL, *dparent = NULL;
3767 struct filter_obd *filter;
3768 struct obd_statfs *osfs;
3769 int err = 0, rc = 0, recreate_obj = 0, i;
3770 cfs_time_t enough_time = cfs_time_shift(DISK_TIMEOUT/2);
3773 void *handle = NULL;
3776 filter = &obd->u.filter;
3778 LASSERT(down_trylock(&filter->fo_create_locks[group]) != 0);
3780 OBD_FAIL_TIMEOUT(OBD_FAIL_TGT_DELAY_PRECREATE, obd_timeout / 2);
3782 if ((oa->o_valid & OBD_MD_FLFLAGS) &&
3783 (oa->o_flags & OBD_FL_RECREATE_OBJS)) {
3786 OBD_ALLOC(osfs, sizeof(*osfs));
3789 rc = filter_statfs(obd, osfs, cfs_time_current_64() - CFS_HZ,
3791 if (rc == 0 && osfs->os_bavail < (osfs->os_blocks >> 10)) {
3792 CDEBUG(D_RPCTRACE,"%s: not enough space for create "
3793 LPU64"\n", obd->obd_name, osfs->os_bavail <<
3794 filter->fo_vfsmnt->mnt_sb->s_blocksize_bits);
3798 OBD_FREE(osfs, sizeof(*osfs));
3803 CDEBUG(D_RPCTRACE, "%s: precreating %d objects in group "LPU64
3804 " at "LPU64"\n", obd->obd_name, *num, group, oa->o_id);
3806 for (i = 0; i < *num && err == 0; i++) {
3807 int cleanup_phase = 0;
3809 if (cfs_test_bit(group, &filter->fo_destroys_in_progress)) {
3810 CWARN("%s: create aborted by destroy\n",
3819 last_id = filter_last_id(filter, group);
3820 if (next_id > last_id) {
3821 CERROR("Error: Trying to recreate obj greater"
3822 "than last id "LPD64" > "LPD64"\n",
3824 GOTO(cleanup, rc = -EINVAL);
3827 next_id = filter_last_id(filter, group) + 1;
3829 dparent = filter_parent_lock(obd, group, next_id);
3830 if (IS_ERR(dparent))
3831 GOTO(cleanup, rc = PTR_ERR(dparent));
3832 cleanup_phase = 1; /* filter_parent_unlock(dparent) */
3834 dchild = filter_fid2dentry(obd, dparent, group, next_id);
3836 GOTO(cleanup, rc = PTR_ERR(dchild));
3837 cleanup_phase = 2; /* f_dput(dchild) */
3839 if (dchild->d_inode != NULL) {
3840 /* This would only happen if lastobjid was bad on disk*/
3841 /* Could also happen if recreating missing obj but it
3842 * already exists. */
3844 CERROR("%s: recreating existing object %.*s?\n",
3845 obd->obd_name, dchild->d_name.len,
3846 dchild->d_name.name);
3848 /* Use these existing objects if they are
3850 if (dchild->d_inode->i_size == 0) {
3851 rc = filter_use_existing_obj(obd,dchild,
3852 &handle, &cleanup_phase);
3859 CERROR("%s: Serious error: objid %.*s already "
3860 "exists; is this filesystem corrupt?\n",
3861 obd->obd_name, dchild->d_name.len,
3862 dchild->d_name.name);
3865 GOTO(cleanup, rc = -EEXIST);
3868 handle = fsfilt_start_log(obd, dparent->d_inode,
3869 FSFILT_OP_CREATE, NULL, 1);
3871 GOTO(cleanup, rc = PTR_ERR(handle));
3874 CDEBUG(D_INODE, "%s: filter_precreate(od->o_gr="LPU64
3875 ",od->o_id="LPU64")\n", obd->obd_name, group,
3878 /* We mark object SUID+SGID to flag it for accepting UID+GID
3879 * from client on first write. Currently the permission bits
3880 * on the OST are never used, so this is OK. */
3881 rc = ll_vfs_create(dparent->d_inode, dchild,
3882 S_IFREG | S_ISUID | S_ISGID | 0666, NULL);
3884 CERROR("create failed rc = %d\n", rc);
3885 if (rc == -ENOSPC) {
3886 os_ffree = filter_calc_free_inodes(obd);
3888 CERROR("%s: free inode "LPU64"\n",
3889 obd->obd_name, os_ffree);
3894 if (dchild->d_inode)
3895 CDEBUG(D_INFO, "objid "LPU64" got inum %lu\n", next_id,
3896 dchild->d_inode->i_ino);
3899 if (!recreate_obj) {
3900 filter_set_last_id(filter, next_id, group);
3901 err = filter_update_last_objid(obd, group, 0);
3903 CERROR("unable to write lastobjid "
3904 "but file created\n");
3908 switch(cleanup_phase) {
3910 err = fsfilt_commit(obd, dparent->d_inode, handle, 0);
3912 CERROR("error on commit, err = %d\n", err);
3919 filter_parent_unlock(dparent);
3926 if (cfs_time_after(jiffies, enough_time)) {
3928 "%s: precreate slow - want %d got %d \n",
3929 obd->obd_name, *num, i);
3936 "%s: created %d objects for group "LPU64": "LPU64" rc %d\n",
3937 obd->obd_name, i, group, filter->fo_last_objids[group], rc);
3942 static int filter_create(struct obd_export *exp, struct obdo *oa,
3943 struct lov_stripe_md **ea, struct obd_trans_info *oti)
3945 struct obd_device *obd = exp->exp_obd;
3946 struct filter_export_data *fed;
3947 struct filter_obd *filter;
3948 struct lvfs_run_ctxt saved;
3949 struct lov_stripe_md *lsm = NULL;
3950 int rc = 0, diff, group = oa->o_gr;
3953 CDEBUG(D_INODE, "%s: filter_create(od->o_gr="LPU64",od->o_id="
3954 LPU64")\n", obd->obd_name, oa->o_gr, oa->o_id);
3956 if (!(oa->o_valid & OBD_MD_FLGROUP)) {
3957 CERROR("!!! nid %s sent invalid object group %d\n",
3958 obd_export_nid2str(exp), group);
3962 fed = &exp->exp_filter_data;
3963 filter = &obd->u.filter;
3965 if (fed->fed_group != group) {
3966 CERROR("!!! this export (nid %s) used object group %d "
3967 "earlier; now it's trying to use group %d! This could "
3968 "be a bug in the MDS. Please report to "
3969 "http://bugzilla.lustre.org/\n",
3970 obd_export_nid2str(exp), fed->fed_group, group);
3977 rc = obd_alloc_memmd(exp, &lsm);
3984 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
3986 if ((oa->o_valid & OBD_MD_FLFLAGS) &&
3987 (oa->o_flags & OBD_FL_RECREATE_OBJS)) {
3988 if (oa->o_id > filter_last_id(filter, oa->o_gr)) {
3989 CERROR("recreate objid "LPU64" > last id "LPU64"\n",
3990 oa->o_id, filter_last_id(filter,
3995 cfs_down(&filter->fo_create_locks[oa->o_gr]);
3996 rc = filter_precreate(obd, oa, oa->o_gr, &diff);
3997 cfs_up(&filter->fo_create_locks[oa->o_gr]);
4000 rc = filter_handle_precreate(exp, oa, oa->o_gr, oti);
4003 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
4004 if (rc && ea != NULL && *ea != lsm) {
4005 obd_free_memmd(exp, &lsm);
4006 } else if (rc == 0 && ea != NULL) {
4007 /* XXX LOV STACKING: the lsm that is passed to us from
4008 * LOV does not have valid lsm_oinfo data structs, so
4009 * don't go touching that. This needs to be fixed in a
4011 lsm->lsm_object_id = oa->o_id;
4018 int filter_destroy(struct obd_export *exp, struct obdo *oa,
4019 struct lov_stripe_md *md, struct obd_trans_info *oti,
4020 struct obd_export *md_exp, void *capa)
4022 unsigned int qcids[MAXQUOTAS] = {0, 0};
4023 struct obd_device *obd;
4024 struct filter_obd *filter;
4025 struct dentry *dchild = NULL, *dparent = NULL;
4026 struct lustre_handle lockh = { 0 };
4027 struct lvfs_run_ctxt saved;
4028 void *handle = NULL;
4029 struct llog_cookie *fcc = NULL;
4030 int rc, rc2, cleanup_phase = 0, sync = 0;
4034 LASSERT(oa->o_valid & OBD_MD_FLGROUP);
4035 rc = filter_auth_capa(exp, NULL, oa->o_gr,
4036 (struct lustre_capa *)capa, CAPA_OPC_OSS_DESTROY);
4041 filter = &obd->u.filter;
4043 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
4046 CDEBUG(D_INODE, "%s: filter_destroy(od->o_gr="LPU64",od->o_id="
4047 LPU64")\n", obd->obd_name, oa->o_gr, oa->o_id);
4049 dchild = filter_fid2dentry(obd, NULL, oa->o_gr, oa->o_id);
4051 GOTO(cleanup, rc = PTR_ERR(dchild));
4054 if (dchild->d_inode == NULL) {
4055 CDEBUG(D_INODE, "destroying non-existent object "LPU64"\n",
4057 /* If object already gone, cancel cookie right now */
4058 if (oa->o_valid & OBD_MD_FLCOOKIE) {
4059 struct llog_ctxt *ctxt;
4060 struct obd_llog_group *olg;
4062 olg = filter_find_olg(obd, oa->o_gr);
4064 CERROR(" %s: can not find olg of group %d\n",
4065 obd->obd_name, (int)oa->o_gr);
4066 GOTO(cleanup, rc = PTR_ERR(olg));
4068 fcc = &oa->o_lcookie;
4069 ctxt = llog_group_get_ctxt(olg, fcc->lgc_subsys + 1);
4070 llog_cancel(ctxt, NULL, 1, fcc, 0);
4071 llog_ctxt_put(ctxt);
4072 fcc = NULL; /* we didn't allocate fcc, don't free it */
4074 GOTO(cleanup, rc = -ENOENT);
4077 rc = filter_prepare_destroy(obd, oa->o_id, oa->o_gr, &lockh);
4081 /* Our MDC connection is established by the MDS to us */
4082 if (oa->o_valid & OBD_MD_FLCOOKIE) {
4083 OBD_ALLOC(fcc, sizeof(*fcc));
4085 *fcc = oa->o_lcookie;
4087 DQUOT_INIT(dchild->d_inode);
4089 /* we're gonna truncate it first in order to avoid possible deadlock:
4091 * open trasaction open transaction
4092 * down(i_zombie) down(i_zombie)
4093 * restart transaction
4094 * (see BUG 4180) -bzzz
4096 * take i_alloc_sem too to prevent other threads from writing to the
4097 * file while we are truncating it. This can cause lock ordering issue
4098 * between page lock, i_mutex & starting new journal handle.
4099 * (see bug 20321) -johann
4101 down_write(&dchild->d_inode->i_alloc_sem);
4102 LOCK_INODE_MUTEX(dchild->d_inode);
4104 /* VBR: version recovery check */
4105 rc = filter_version_get_check(exp, oti, dchild->d_inode);
4107 UNLOCK_INODE_MUTEX(dchild->d_inode);
4108 up_write(&dchild->d_inode->i_alloc_sem);
4112 handle = fsfilt_start_log(obd, dchild->d_inode, FSFILT_OP_SETATTR,
4114 if (IS_ERR(handle)) {
4115 UNLOCK_INODE_MUTEX(dchild->d_inode);
4116 up_write(&dchild->d_inode->i_alloc_sem);
4117 GOTO(cleanup, rc = PTR_ERR(handle));
4120 iattr.ia_valid = ATTR_SIZE;
4122 rc = fsfilt_setattr(obd, dchild, handle, &iattr, 1);
4123 rc2 = fsfilt_commit(obd, dchild->d_inode, handle, 0);
4124 UNLOCK_INODE_MUTEX(dchild->d_inode);
4125 up_write(&dchild->d_inode->i_alloc_sem);
4129 GOTO(cleanup, rc = rc2);
4131 /* We don't actually need to lock the parent until we are unlinking
4132 * here, and not while truncating above. That avoids holding the
4133 * parent lock for a long time during truncate, which can block other
4134 * threads from doing anything to objects in that directory. bug 7171 */
4135 dparent = filter_parent_lock(obd, oa->o_gr, oa->o_id);
4136 if (IS_ERR(dparent))
4137 GOTO(cleanup, rc = PTR_ERR(dparent));
4138 cleanup_phase = 3; /* filter_parent_unlock */
4140 LOCK_INODE_MUTEX(dchild->d_inode);
4141 handle = fsfilt_start_log(obd, dparent->d_inode,FSFILT_OP_UNLINK,oti,1);
4142 if (IS_ERR(handle)) {
4143 UNLOCK_INODE_MUTEX(dchild->d_inode);
4144 GOTO(cleanup, rc = PTR_ERR(handle));
4146 cleanup_phase = 4; /* fsfilt_commit */
4148 /* Quota release need uid/gid of inode */
4149 obdo_from_inode(oa, dchild->d_inode, OBD_MD_FLUID|OBD_MD_FLGID);
4151 filter_fmd_drop(exp, oa->o_id, oa->o_gr);
4153 /* this drops dchild->d_inode->i_mutex unconditionally */
4154 rc = filter_destroy_internal(obd, oa->o_id, oa->o_gr, dparent, dchild);
4158 switch(cleanup_phase) {
4161 sync = fsfilt_add_journal_cb(obd, 0, oti ?
4162 oti->oti_handle : handle,
4163 filter_cancel_cookies_cb,
4165 /* If add_journal_cb failed, then filter_finish_transno
4166 * will commit the handle and we will do a sync
4167 * on commit. then we call callback directly to free
4170 rc = filter_finish_transno(exp, NULL, oti, rc, sync);
4172 filter_cancel_cookies_cb(obd, 0, fcc, rc);
4175 rc2 = fsfilt_commit(obd, dparent->d_inode, handle, 0);
4177 CERROR("error on commit, err = %d\n", rc2);
4184 filter_parent_unlock(dparent);
4186 filter_fini_destroy(obd, &lockh);
4190 OBD_FREE(fcc, sizeof(*fcc));
4192 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
4195 CERROR("invalid cleanup_phase %d\n", cleanup_phase);
4199 /* trigger quota release */
4200 qcids[USRQUOTA] = oa->o_uid;
4201 qcids[GRPQUOTA] = oa->o_gid;
4202 rc2 = lquota_adjust(filter_quota_interface_ref, obd, qcids, NULL, rc,
4205 CERROR("filter adjust qunit! (rc:%d)\n", rc2);
4209 /* NB start and end are used for punch, but not truncate */
4210 static int filter_truncate(struct obd_export *exp, struct obd_info *oinfo,
4211 struct obd_trans_info *oti,
4212 struct ptlrpc_request_set *rqset)
4217 if (oinfo->oi_policy.l_extent.end != OBD_OBJECT_EOF) {
4218 CERROR("PUNCH not supported, only truncate: end = "LPX64"\n",
4219 oinfo->oi_policy.l_extent.end);
4223 CDEBUG(D_INODE, "calling truncate for object "LPU64", valid = "LPX64
4224 ", o_size = "LPD64"\n", oinfo->oi_oa->o_id,
4225 oinfo->oi_oa->o_valid, oinfo->oi_policy.l_extent.start);
4227 oinfo->oi_oa->o_size = oinfo->oi_policy.l_extent.start;
4228 oinfo->oi_oa->o_valid |= OBD_FL_TRUNC;
4229 rc = filter_setattr(exp, oinfo, oti);
4230 oinfo->oi_oa->o_valid &= ~OBD_FL_TRUNC;
4234 static int filter_sync(struct obd_export *exp, struct obdo *oa,
4235 struct lov_stripe_md *lsm, obd_off start, obd_off end,
4238 struct lvfs_run_ctxt saved;
4239 struct filter_obd *filter;
4240 struct dentry *dentry;
4244 LASSERT(oa->o_valid & OBD_MD_FLGROUP);
4245 rc = filter_auth_capa(exp, NULL, oa->o_gr,
4246 (struct lustre_capa *)capa, CAPA_OPC_OSS_WRITE);
4250 filter = &exp->exp_obd->u.filter;
4252 /* An objid of zero is taken to mean "sync whole filesystem" */
4253 if (!oa || !(oa->o_valid & OBD_MD_FLID)) {
4254 rc = fsfilt_sync(exp->exp_obd, filter->fo_obt.obt_sb);
4255 /* Flush any remaining cancel messages out to the target */
4256 filter_sync_llogs(exp->exp_obd, exp);
4260 dentry = filter_oa2dentry(exp->exp_obd, oa);
4262 RETURN(PTR_ERR(dentry));
4264 push_ctxt(&saved, &exp->exp_obd->obd_lvfs_ctxt, NULL);
4266 LOCK_INODE_MUTEX(dentry->d_inode);
4268 rc = filemap_fdatawrite(dentry->d_inode->i_mapping);
4270 /* just any file to grab fsync method - "file" arg unused */
4271 struct file *file = filter->fo_rcvd_filp;
4273 if (file->f_op && file->f_op->fsync)
4274 rc = file->f_op->fsync(NULL, dentry, 1);
4276 rc2 = filemap_fdatawait(dentry->d_inode->i_mapping);
4280 UNLOCK_INODE_MUTEX(dentry->d_inode);
4282 oa->o_valid = OBD_MD_FLID;
4283 obdo_from_inode(oa, dentry->d_inode, FILTER_VALID_FLAGS);
4285 pop_ctxt(&saved, &exp->exp_obd->obd_lvfs_ctxt, NULL);
4291 static int filter_get_info(struct obd_export *exp, __u32 keylen,
4292 void *key, __u32 *vallen, void *val,
4293 struct lov_stripe_md *lsm)
4295 struct obd_device *obd;
4298 obd = class_exp2obd(exp);
4300 CDEBUG(D_IOCTL, "invalid client export %p\n", exp);
4304 if (KEY_IS(KEY_BLOCKSIZE)) {
4305 __u32 *blocksize = val;
4307 if (*vallen < sizeof(*blocksize))
4309 *blocksize = obd->u.obt.obt_sb->s_blocksize;
4311 *vallen = sizeof(*blocksize);
4315 if (KEY_IS(KEY_BLOCKSIZE_BITS)) {
4316 __u32 *blocksize_bits = val;
4317 if (blocksize_bits) {
4318 if (*vallen < sizeof(*blocksize_bits))
4320 *blocksize_bits = obd->u.obt.obt_sb->s_blocksize_bits;
4322 *vallen = sizeof(*blocksize_bits);
4326 if (KEY_IS(KEY_LAST_ID)) {
4327 obd_id *last_id = val;
4328 /* FIXME: object groups */
4330 if (*vallen < sizeof(*last_id))
4332 *last_id = filter_last_id(&obd->u.filter,
4333 exp->exp_filter_data.fed_group);
4335 *vallen = sizeof(*last_id);
4339 if (KEY_IS(KEY_FIEMAP)) {
4340 struct ll_fiemap_info_key *fm_key = key;
4341 struct dentry *dentry;
4342 struct ll_user_fiemap *fiemap = val;
4343 struct lvfs_run_ctxt saved;
4346 if (fiemap == NULL) {
4347 *vallen = fiemap_count_to_size(
4348 fm_key->fiemap.fm_extent_count);
4352 dentry = __filter_oa2dentry(exp->exp_obd, &fm_key->oa,
4355 RETURN(PTR_ERR(dentry));
4357 memcpy(fiemap, &fm_key->fiemap, sizeof(*fiemap));
4358 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
4359 rc = fsfilt_iocontrol(obd, dentry, FSFILT_IOC_FIEMAP,
4361 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
4367 CDEBUG(D_IOCTL, "invalid key\n");
4371 static inline int filter_setup_llog_group(struct obd_export *exp,
4372 struct obd_device *obd,
4375 struct obd_llog_group *olg;
4376 struct llog_ctxt *ctxt;
4379 olg = filter_find_create_olg(obd, group);
4381 RETURN(PTR_ERR(olg));
4383 llog_group_set_export(olg, exp);
4385 ctxt = llog_group_get_ctxt(olg, LLOG_MDS_OST_REPL_CTXT);
4386 LASSERTF(ctxt != NULL, "ctxt is null\n");
4388 rc = llog_receptor_accept(ctxt, exp->exp_imp_reverse);
4389 llog_ctxt_put(ctxt);
4393 static int filter_set_grant_shrink(struct obd_export *exp,
4394 struct ost_body *body)
4396 /* handle shrink grant */
4397 cfs_spin_lock(&exp->exp_obd->obd_osfs_lock);
4398 filter_grant_incoming(exp, &body->oa);
4399 cfs_spin_unlock(&exp->exp_obd->obd_osfs_lock);
4405 static int filter_set_mds_conn(struct obd_export *exp, void *val)
4407 struct obd_device *obd;
4413 CDEBUG(D_IOCTL, "invalid export %p\n", exp);
4417 LCONSOLE_WARN("%s: received MDS connection from %s\n", obd->obd_name,
4418 obd_export_nid2str(exp));
4419 obd->u.filter.fo_mdc_conn.cookie = exp->exp_handle.h_cookie;
4421 /* setup llog imports */
4423 group = (int)(*(__u32 *)val);
4425 group = 0; /* default value */
4427 LASSERT_MDS_GROUP(group);
4428 rc = filter_setup_llog_group(exp, obd, group);
4432 if (group == FILTER_GROUP_MDS0) {
4433 /* setup llog group 1 for interop */
4434 filter_setup_llog_group(exp, obd, FILTER_GROUP_LLOG);
4437 lquota_setinfo(filter_quota_interface_ref, obd, exp);
4442 static int filter_set_info_async(struct obd_export *exp, __u32 keylen,
4443 void *key, __u32 vallen, void *val,
4444 struct ptlrpc_request_set *set)
4446 struct obd_device *obd;
4451 CDEBUG(D_IOCTL, "invalid export %p\n", exp);
4455 if (KEY_IS(KEY_CAPA_KEY)) {
4457 rc = filter_update_capa_key(obd, (struct lustre_capa_key *)val);
4459 CERROR("filter update capability key failed: %d\n", rc);
4463 if (KEY_IS(KEY_REVIMP_UPD)) {
4464 filter_revimp_update(exp);
4465 lquota_clearinfo(filter_quota_interface_ref, exp, exp->exp_obd);
4469 if (KEY_IS(KEY_SPTLRPC_CONF)) {
4470 filter_adapt_sptlrpc_conf(obd, 0);
4474 if (KEY_IS(KEY_MDS_CONN))
4475 RETURN(filter_set_mds_conn(exp, val));
4477 if (KEY_IS(KEY_GRANT_SHRINK))
4478 RETURN(filter_set_grant_shrink(exp, val));
4483 int filter_iocontrol(unsigned int cmd, struct obd_export *exp,
4484 int len, void *karg, void *uarg)
4486 struct obd_device *obd = exp->exp_obd;
4487 struct obd_ioctl_data *data = karg;
4491 case OBD_IOC_ABORT_RECOVERY: {
4492 LCONSOLE_WARN("%s: Aborting recovery.\n", obd->obd_name);
4493 target_stop_recovery_thread(obd);
4497 case OBD_IOC_SYNC: {
4498 CDEBUG(D_RPCTRACE, "syncing ost %s\n", obd->obd_name);
4499 rc = fsfilt_sync(obd, obd->u.obt.obt_sb);
4503 case OBD_IOC_SET_READONLY: {
4505 struct super_block *sb = obd->u.obt.obt_sb;
4506 struct inode *inode = sb->s_root->d_inode;
4507 BDEVNAME_DECLARE_STORAGE(tmp);
4508 CERROR("*** setting device %s read-only ***\n",
4509 ll_bdevname(sb, tmp));
4511 handle = fsfilt_start(obd, inode, FSFILT_OP_MKNOD, NULL);
4512 if (!IS_ERR(handle))
4513 rc = fsfilt_commit(obd, inode, handle, 1);
4515 CDEBUG(D_HA, "syncing ost %s\n", obd->obd_name);
4516 rc = fsfilt_sync(obd, obd->u.obt.obt_sb);
4518 lvfs_set_rdonly(obd, obd->u.obt.obt_sb);
4522 case OBD_IOC_CATLOGLIST: {
4523 rc = llog_catalog_list(obd, 1, data);
4527 case OBD_IOC_LLOG_CANCEL:
4528 case OBD_IOC_LLOG_REMOVE:
4529 case OBD_IOC_LLOG_INFO:
4530 case OBD_IOC_LLOG_PRINT: {
4531 /* FIXME to be finished */
4532 RETURN(-EOPNOTSUPP);
4534 struct llog_ctxt *ctxt = NULL;
4536 push_ctxt(&saved, &ctxt->loc_exp->exp_obd->obd_lvfs_ctxt, NULL);
4537 rc = llog_ioctl(ctxt, cmd, data);
4538 pop_ctxt(&saved, &ctxt->loc_exp->exp_obd->obd_lvfs_ctxt, NULL);
4551 static int filter_health_check(struct obd_device *obd)
4553 #ifdef USE_HEALTH_CHECK_WRITE
4554 struct filter_obd *filter = &obd->u.filter;
4559 * health_check to return 0 on healthy
4560 * and 1 on unhealthy.
4562 if (obd->u.obt.obt_sb->s_flags & MS_RDONLY)
4565 #ifdef USE_HEALTH_CHECK_WRITE
4566 LASSERT(filter->fo_obt.obt_health_check_filp != NULL);
4567 rc |= !!lvfs_check_io_health(obd, filter->fo_obt.obt_health_check_filp);
4572 static struct dentry *filter_lvfs_fid2dentry(__u64 id, __u32 gen, __u64 gr,
4575 return filter_fid2dentry(data, NULL, gr, id);
4578 static int filter_process_config(struct obd_device *obd, obd_count len,
4581 struct lustre_cfg *lcfg = buf;
4582 struct lprocfs_static_vars lvars;
4585 switch (lcfg->lcfg_command) {
4587 lprocfs_filter_init_vars(&lvars);
4589 rc = class_process_proc_param(PARAM_OST, lvars.obd_vars,
4599 static struct lvfs_callback_ops filter_lvfs_ops = {
4600 l_fid2dentry: filter_lvfs_fid2dentry,
4603 static struct obd_ops filter_obd_ops = {
4604 .o_owner = THIS_MODULE,
4605 .o_get_info = filter_get_info,
4606 .o_set_info_async = filter_set_info_async,
4607 .o_setup = filter_setup,
4608 .o_precleanup = filter_precleanup,
4609 .o_cleanup = filter_cleanup,
4610 .o_connect = filter_connect,
4611 .o_reconnect = filter_reconnect,
4612 .o_disconnect = filter_disconnect,
4613 .o_ping = filter_ping,
4614 .o_init_export = filter_init_export,
4615 .o_destroy_export = filter_destroy_export,
4616 .o_statfs = filter_statfs,
4617 .o_getattr = filter_getattr,
4618 .o_unpackmd = filter_unpackmd,
4619 .o_create = filter_create,
4620 .o_setattr = filter_setattr,
4621 .o_destroy = filter_destroy,
4622 .o_brw = filter_brw,
4623 .o_punch = filter_truncate,
4624 .o_sync = filter_sync,
4625 .o_preprw = filter_preprw,
4626 .o_commitrw = filter_commitrw,
4627 .o_llog_init = filter_llog_init,
4628 .o_llog_connect = filter_llog_connect,
4629 .o_llog_finish = filter_llog_finish,
4630 .o_iocontrol = filter_iocontrol,
4631 .o_health_check = filter_health_check,
4632 .o_process_config = filter_process_config,
4635 quota_interface_t *filter_quota_interface_ref;
4636 extern quota_interface_t filter_quota_interface;
4638 static int __init obdfilter_init(void)
4640 struct lprocfs_static_vars lvars;
4643 /** sanity check for group<->mdsno conversion */
4644 for (i = 0; i < 32; i++)
4645 LASSERT(objgrp_to_mdsno(mdt_to_obd_objgrp(i)) == i);
4647 lprocfs_filter_init_vars(&lvars);
4649 cfs_request_module("%s", "lquota");
4650 OBD_ALLOC(obdfilter_created_scratchpad,
4651 OBDFILTER_CREATED_SCRATCHPAD_ENTRIES *
4652 sizeof(*obdfilter_created_scratchpad));
4653 if (obdfilter_created_scratchpad == NULL)
4656 ll_fmd_cachep = cfs_mem_cache_create("ll_fmd_cache",
4657 sizeof(struct filter_mod_data),
4660 GOTO(out, rc = -ENOMEM);
4662 filter_quota_interface_ref = PORTAL_SYMBOL_GET(filter_quota_interface);
4663 init_obd_quota_ops(filter_quota_interface_ref, &filter_obd_ops);
4665 rc = class_register_type(&filter_obd_ops, NULL, lvars.module_vars,
4666 LUSTRE_OST_NAME, NULL);
4670 err = cfs_mem_cache_destroy(ll_fmd_cachep);
4671 LASSERTF(err == 0, "Cannot destroy ll_fmd_cachep: rc %d\n",err);
4672 ll_fmd_cachep = NULL;
4674 if (filter_quota_interface_ref)
4675 PORTAL_SYMBOL_PUT(filter_quota_interface);
4677 OBD_FREE(obdfilter_created_scratchpad,
4678 OBDFILTER_CREATED_SCRATCHPAD_ENTRIES *
4679 sizeof(*obdfilter_created_scratchpad));
4685 static void __exit obdfilter_exit(void)
4687 if (filter_quota_interface_ref)
4688 PORTAL_SYMBOL_PUT(filter_quota_interface);
4690 if (ll_fmd_cachep) {
4691 int rc = cfs_mem_cache_destroy(ll_fmd_cachep);
4692 LASSERTF(rc == 0, "Cannot destroy ll_fmd_cachep: rc %d\n", rc);
4693 ll_fmd_cachep = NULL;
4696 class_unregister_type(LUSTRE_OST_NAME);
4697 OBD_FREE(obdfilter_created_scratchpad,
4698 OBDFILTER_CREATED_SCRATCHPAD_ENTRIES *
4699 sizeof(*obdfilter_created_scratchpad));
4702 MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
4703 MODULE_DESCRIPTION("Lustre Filtering OBD driver");
4704 MODULE_LICENSE("GPL");
4706 module_init(obdfilter_init);
4707 module_exit(obdfilter_exit);