1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
4 * linux/fs/obdfilter/filter.c
6 * Copyright (c) 2001-2003 Cluster File Systems, Inc.
7 * Author: Peter Braam <braam@clusterfs.com>
8 * Author: Andreas Dilger <adilger@clusterfs.com>
10 * This file is part of Lustre, http://www.lustre.org.
12 * Lustre is free software; you can redistribute it and/or
13 * modify it under the terms of version 2 of the GNU General Public
14 * License as published by the Free Software Foundation.
16 * Lustre is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with Lustre; if not, write to the Free Software
23 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
27 * Invariant: Get O/R i_mutex for lookup, if needed, before any journal ops
28 * (which need to get journal_lock, may block if journal full).
30 * Invariant: Call filter_start_transno() before any journal ops to avoid the
31 * same deadlock problem. We can (and want) to get rid of the
32 * transno sem in favour of the dir/inode i_mutex to avoid single
33 * threaded operation on the OST.
36 #define DEBUG_SUBSYSTEM S_FILTER
38 #ifndef AUTOCONF_INCLUDED
39 #include <linux/config.h>
41 #include <linux/module.h>
43 #include <linux/dcache.h>
44 #include <linux/init.h>
45 #include <linux/version.h>
46 #include <linux/sched.h>
47 #include <linux/mount.h>
48 #include <linux/buffer_head.h>
50 #include <obd_cksum.h>
51 #include <obd_class.h>
53 #include <lustre_dlm.h>
54 #include <lustre_fsfilt.h>
55 #include <lprocfs_status.h>
56 #include <lustre_log.h>
57 #include <lustre_commit_confd.h>
58 #include <libcfs/list.h>
59 #include <lustre_disk.h>
60 #include <lustre_quota.h>
61 #include <linux/slab.h>
62 #include <lustre_param.h>
64 #include "filter_internal.h"
66 /* Group 0 is no longer a legal group, to catch uninitialized IDs */
67 #define FILTER_MIN_GROUPS FILTER_GROUP_MDS0
68 static struct lvfs_callback_ops filter_lvfs_ops;
69 cfs_mem_cache_t *ll_fmd_cachep;
71 static void filter_commit_cb(struct obd_device *obd, __u64 transno,
72 void *cb_data, int error)
74 obd_transno_commit_cb(obd, transno, error);
77 /* Assumes caller has already pushed us into the kernel context. */
78 int filter_finish_transno(struct obd_export *exp, struct obd_trans_info *oti,
79 int rc, int force_sync)
81 struct filter_obd *filter = &exp->exp_obd->u.filter;
82 struct filter_export_data *fed = &exp->exp_filter_data;
83 struct filter_client_data *fcd = fed->fed_fcd;
86 int err, log_pri = D_RPCTRACE;
88 /* Propagate error code. */
92 if (!exp->exp_obd->obd_replayable || oti == NULL)
95 /* we don't allocate new transnos for replayed requests */
96 if (oti->oti_transno == 0) {
97 spin_lock(&filter->fo_translock);
98 last_rcvd = le64_to_cpu(filter->fo_fsd->lsd_last_transno) + 1;
99 filter->fo_fsd->lsd_last_transno = cpu_to_le64(last_rcvd);
100 spin_unlock(&filter->fo_translock);
101 oti->oti_transno = last_rcvd;
103 spin_lock(&filter->fo_translock);
104 last_rcvd = oti->oti_transno;
105 if (last_rcvd > le64_to_cpu(filter->fo_fsd->lsd_last_transno))
106 filter->fo_fsd->lsd_last_transno =
107 cpu_to_le64(last_rcvd);
108 spin_unlock(&filter->fo_translock);
110 fcd->fcd_last_rcvd = cpu_to_le64(last_rcvd);
112 /* could get xid from oti, if it's ever needed */
113 fcd->fcd_last_xid = 0;
115 off = fed->fed_lr_off;
117 CERROR("%s: client idx %d is %lld\n", exp->exp_obd->obd_name,
118 fed->fed_lr_idx, fed->fed_lr_off);
122 force_sync = fsfilt_add_journal_cb(exp->exp_obd,
128 err = fsfilt_write_record(exp->exp_obd, filter->fo_rcvd_filp,
129 fcd, sizeof(*fcd), &off,
130 force_sync | exp->exp_need_sync);
132 filter_commit_cb(exp->exp_obd, last_rcvd, NULL, err);
140 CDEBUG(log_pri, "wrote trans "LPU64" for client %s at #%d: err = %d\n",
141 last_rcvd, fcd->fcd_uuid, fed->fed_lr_idx, err);
146 void f_dput(struct dentry *dentry)
148 /* Can't go inside filter_ddelete because it can block */
149 CDEBUG(D_INODE, "putting %s: %p, count = %d\n",
150 dentry->d_name.name, dentry, atomic_read(&dentry->d_count) - 1);
151 LASSERT(atomic_read(&dentry->d_count) > 0);
156 static void init_brw_stats(struct brw_stats *brw_stats)
159 for (i = 0; i < BRW_LAST; i++)
160 spin_lock_init(&brw_stats->hist[i].oh_lock);
163 /* brw_stats are 2128, ops are 3916, ldlm are 204, so 6248 bytes per client,
164 plus the procfs overhead :( */
165 static int filter_export_stats_init(struct obd_device *obd,
166 struct obd_export *exp)
168 struct filter_export_data *fed = &exp->exp_filter_data;
169 struct proc_dir_entry *brw_entry;
173 init_brw_stats(&fed->fed_brw_stats);
175 if (obd_uuid_equals(&exp->exp_client_uuid, &obd->obd_uuid))
176 /* Self-export gets no proc entry */
179 rc = lprocfs_exp_setup(exp);
183 /* Create a per export proc entry for brw_stats */
184 brw_entry = create_proc_entry("brw_stats", 0644, exp->exp_proc);
185 if (brw_entry == NULL)
187 brw_entry->proc_fops = &filter_per_export_stats_fops;
188 brw_entry->data = fed;
190 /* Create a per export proc entry for ops stats */
191 num_stats = (sizeof(*obd->obd_type->typ_dt_ops) / sizeof(void *)) +
192 LPROC_FILTER_LAST - 1;
193 exp->exp_ops_stats = lprocfs_alloc_stats(num_stats,
194 LPROCFS_STATS_FLAG_NOPERCPU);
195 if (exp->exp_ops_stats == NULL)
197 lprocfs_init_ops_stats(LPROC_FILTER_LAST, exp->exp_ops_stats);
198 lprocfs_counter_init(exp->exp_ops_stats, LPROC_FILTER_READ_BYTES,
199 LPROCFS_CNTR_AVGMINMAX, "read_bytes", "bytes");
200 lprocfs_counter_init(exp->exp_ops_stats, LPROC_FILTER_WRITE_BYTES,
201 LPROCFS_CNTR_AVGMINMAX, "write_bytes", "bytes");
202 lprocfs_register_stats(exp->exp_proc, "stats", exp->exp_ops_stats);
206 /* Add client data to the FILTER. We use a bitmap to locate a free space
207 * in the last_rcvd file if cl_idx is -1 (i.e. a new client).
208 * Otherwise, we have just read the data from the last_rcvd file and
209 * we know its offset. */
210 static int filter_client_add(struct obd_device *obd, struct obd_export *exp,
213 struct filter_obd *filter = &obd->u.filter;
214 struct filter_export_data *fed = &exp->exp_filter_data;
215 unsigned long *bitmap = filter->fo_last_rcvd_slots;
216 int new_client = (cl_idx == -1);
220 LASSERT(bitmap != NULL);
221 LASSERTF(cl_idx > -2, "%d\n", cl_idx);
224 if (strcmp(fed->fed_fcd->fcd_uuid, obd->obd_uuid.uuid) == 0)
227 /* the bitmap operations can handle cl_idx > sizeof(long) * 8, so
228 * there's no need for extra complication here
231 cl_idx = find_first_zero_bit(bitmap, LR_MAX_CLIENTS);
233 if (cl_idx >= LR_MAX_CLIENTS) {
234 CERROR("no room for %u client - fix LR_MAX_CLIENTS\n",
238 if (test_and_set_bit(cl_idx, bitmap)) {
239 cl_idx = find_next_zero_bit(bitmap, LR_MAX_CLIENTS,
244 if (test_and_set_bit(cl_idx, bitmap)) {
245 CERROR("FILTER client %d: bit already set in bitmap!\n",
251 fed->fed_lr_idx = cl_idx;
252 fed->fed_lr_off = le32_to_cpu(filter->fo_fsd->lsd_client_start) +
253 cl_idx * le16_to_cpu(filter->fo_fsd->lsd_client_size);
254 LASSERTF(fed->fed_lr_off > 0, "fed_lr_off = %llu\n", fed->fed_lr_off);
256 CDEBUG(D_INFO, "client at index %d (%llu) with UUID '%s' added\n",
257 fed->fed_lr_idx, fed->fed_lr_off, fed->fed_fcd->fcd_uuid);
260 struct lvfs_run_ctxt saved;
261 loff_t off = fed->fed_lr_off;
265 CDEBUG(D_INFO, "writing client fcd at idx %u (%llu) (len %u)\n",
266 fed->fed_lr_idx,off,(unsigned int)sizeof(*fed->fed_fcd));
268 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
269 /* Transaction needed to fix bug 1403 */
270 handle = fsfilt_start(obd,
271 filter->fo_rcvd_filp->f_dentry->d_inode,
272 FSFILT_OP_SETATTR, NULL);
273 if (IS_ERR(handle)) {
274 rc = PTR_ERR(handle);
275 CERROR("unable to start transaction: rc %d\n", rc);
277 rc = fsfilt_add_journal_cb(obd, 0, handle,
278 target_client_add_cb, exp);
280 spin_lock(&exp->exp_lock);
281 exp->exp_need_sync = 1;
282 spin_unlock(&exp->exp_lock);
284 rc = fsfilt_write_record(obd, filter->fo_rcvd_filp,
286 sizeof(*fed->fed_fcd),
287 &off, rc /* sync if no cb */);
289 filter->fo_rcvd_filp->f_dentry->d_inode,
292 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
295 CERROR("error writing %s client idx %u: rc %d\n",
296 LAST_RCVD, fed->fed_lr_idx, rc);
303 static int filter_client_free(struct obd_export *exp)
305 struct filter_export_data *fed = &exp->exp_filter_data;
306 struct filter_obd *filter = &exp->exp_obd->u.filter;
307 struct obd_device *obd = exp->exp_obd;
308 struct filter_client_data zero_fcd;
309 struct lvfs_run_ctxt saved;
314 if (fed->fed_fcd == NULL)
317 /* XXX if fcd_uuid were a real obd_uuid, I could use obd_uuid_equals */
318 if (strcmp(fed->fed_fcd->fcd_uuid, obd->obd_uuid.uuid ) == 0)
321 CDEBUG(D_INFO, "freeing client at idx %u, offset %lld with UUID '%s'\n",
322 fed->fed_lr_idx, fed->fed_lr_off, fed->fed_fcd->fcd_uuid);
324 LASSERT(filter->fo_last_rcvd_slots != NULL);
326 off = fed->fed_lr_off;
328 /* Don't clear fed_lr_idx here as it is likely also unset. At worst
329 * we leak a client slot that will be cleaned on the next recovery. */
331 CERROR("%s: client idx %d has med_off %lld\n",
332 obd->obd_name, fed->fed_lr_idx, off);
333 GOTO(free, rc = -EINVAL);
336 /* Clear the bit _after_ zeroing out the client so we don't
337 race with filter_client_add and zero out new clients.*/
338 if (!test_bit(fed->fed_lr_idx, filter->fo_last_rcvd_slots)) {
339 CERROR("FILTER client %u: bit already clear in bitmap!!\n",
344 if (!(exp->exp_flags & OBD_OPT_FAILOVER)) {
345 memset(&zero_fcd, 0, sizeof zero_fcd);
346 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
347 rc = fsfilt_write_record(obd, filter->fo_rcvd_filp, &zero_fcd,
348 sizeof(zero_fcd), &off,
349 (!exp->exp_libclient ||
350 exp->exp_need_sync));
352 /* update server's transno */
353 filter_update_server_data(obd, filter->fo_rcvd_filp,
355 !exp->exp_libclient);
356 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
358 CDEBUG(rc == 0 ? D_INFO : D_ERROR,
359 "zeroing out client %s at idx %u (%llu) in %s rc %d\n",
360 fed->fed_fcd->fcd_uuid, fed->fed_lr_idx, fed->fed_lr_off,
364 if (!test_and_clear_bit(fed->fed_lr_idx, filter->fo_last_rcvd_slots)) {
365 CERROR("FILTER client %u: bit already clear in bitmap!!\n",
372 OBD_FREE(fed->fed_fcd, sizeof(*fed->fed_fcd));
378 /* drop fmd reference, free it if last ref. must be called with fed_lock held.*/
379 static inline void filter_fmd_put_nolock(struct filter_export_data *fed,
380 struct filter_mod_data *fmd)
382 LASSERT_SPIN_LOCKED(&fed->fed_lock);
383 if (--fmd->fmd_refcount == 0) {
384 /* XXX when we have persistent reservations and the handle
385 * is stored herein we need to drop it here. */
386 fed->fed_mod_count--;
387 list_del(&fmd->fmd_list);
388 OBD_SLAB_FREE(fmd, ll_fmd_cachep, sizeof(*fmd));
392 /* drop fmd reference, free it if last ref */
393 void filter_fmd_put(struct obd_export *exp, struct filter_mod_data *fmd)
395 struct filter_export_data *fed;
400 fed = &exp->exp_filter_data;
401 spin_lock(&fed->fed_lock);
402 filter_fmd_put_nolock(fed, fmd); /* caller reference */
403 spin_unlock(&fed->fed_lock);
406 /* expire entries from the end of the list if there are too many
407 * or they are too old */
408 static void filter_fmd_expire_nolock(struct filter_obd *filter,
409 struct filter_export_data *fed,
410 struct filter_mod_data *keep)
412 struct filter_mod_data *fmd, *tmp;
414 list_for_each_entry_safe(fmd, tmp, &fed->fed_mod_list, fmd_list) {
418 if (time_before(jiffies, fmd->fmd_expire) &&
419 fed->fed_mod_count < filter->fo_fmd_max_num)
422 list_del_init(&fmd->fmd_list);
423 filter_fmd_put_nolock(fed, fmd); /* list reference */
427 void filter_fmd_expire(struct obd_export *exp)
429 spin_lock(&exp->exp_filter_data.fed_lock);
430 filter_fmd_expire_nolock(&exp->exp_obd->u.filter,
431 &exp->exp_filter_data, NULL);
432 spin_unlock(&exp->exp_filter_data.fed_lock);
435 /* find specified objid, group in export fmd list.
436 * caller must hold fed_lock and take fmd reference itself */
437 static struct filter_mod_data *filter_fmd_find_nolock(struct filter_obd *filter,
438 struct filter_export_data *fed,
439 obd_id objid, obd_gr group)
441 struct filter_mod_data *found = NULL, *fmd;
443 LASSERT_SPIN_LOCKED(&fed->fed_lock);
445 list_for_each_entry_reverse(fmd, &fed->fed_mod_list, fmd_list) {
446 if (fmd->fmd_id == objid && fmd->fmd_gr == group) {
448 list_del(&fmd->fmd_list);
449 list_add_tail(&fmd->fmd_list, &fed->fed_mod_list);
450 fmd->fmd_expire = jiffies + filter->fo_fmd_max_age;
455 filter_fmd_expire_nolock(filter, fed, found);
460 /* Find fmd based on objid and group, or return NULL if not found. */
461 struct filter_mod_data *filter_fmd_find(struct obd_export *exp,
462 obd_id objid, obd_gr group)
464 struct filter_mod_data *fmd;
466 spin_lock(&exp->exp_filter_data.fed_lock);
467 fmd = filter_fmd_find_nolock(&exp->exp_obd->u.filter,
468 &exp->exp_filter_data, objid, group);
470 fmd->fmd_refcount++; /* caller reference */
471 spin_unlock(&exp->exp_filter_data.fed_lock);
476 /* Find fmd based on objid and group, or create a new one if none is found.
477 * It is possible for this function to return NULL under memory pressure,
478 * or if objid = 0 is passed (which will only cause old entries to expire).
479 * Currently this is not fatal because any fmd state is transient and
480 * may also be freed when it gets sufficiently old. */
481 struct filter_mod_data *filter_fmd_get(struct obd_export *exp,
482 obd_id objid, obd_gr group)
484 struct filter_export_data *fed = &exp->exp_filter_data;
485 struct filter_mod_data *found = NULL, *fmd_new = NULL;
487 OBD_SLAB_ALLOC(fmd_new, ll_fmd_cachep, CFS_ALLOC_IO, sizeof(*fmd_new));
489 spin_lock(&fed->fed_lock);
490 found = filter_fmd_find_nolock(&exp->exp_obd->u.filter,fed,objid,group);
493 list_add_tail(&fmd_new->fmd_list, &fed->fed_mod_list);
494 fmd_new->fmd_id = objid;
495 fmd_new->fmd_gr = group;
496 fmd_new->fmd_refcount++; /* list reference */
498 fed->fed_mod_count++;
500 OBD_SLAB_FREE(fmd_new, ll_fmd_cachep, sizeof(*fmd_new));
504 found->fmd_refcount++; /* caller reference */
505 found->fmd_expire = jiffies +
506 exp->exp_obd->u.filter.fo_fmd_max_age;
509 spin_unlock(&fed->fed_lock);
515 /* drop fmd list reference so it will disappear when last reference is put.
516 * This isn't so critical because it would in fact only affect the one client
517 * that is doing the unlink and at worst we have an stale entry referencing
518 * an object that should never be used again. */
519 static void filter_fmd_drop(struct obd_export *exp, obd_id objid, obd_gr group)
521 struct filter_mod_data *found = NULL;
523 spin_lock(&exp->exp_filter_data.fed_lock);
524 found = filter_fmd_find_nolock(&exp->exp_filter_data, objid, group);
526 list_del_init(&found->fmd_list);
527 filter_fmd_put_nolock(&exp->exp_filter_data, found);
529 spin_unlock(&exp->exp_filter_data.fed_lock);
532 #define filter_fmd_drop(exp, objid, group)
535 /* remove all entries from fmd list */
536 static void filter_fmd_cleanup(struct obd_export *exp)
538 struct filter_export_data *fed = &exp->exp_filter_data;
539 struct filter_mod_data *fmd = NULL, *tmp;
541 spin_lock(&fed->fed_lock);
542 list_for_each_entry_safe(fmd, tmp, &fed->fed_mod_list, fmd_list) {
543 list_del_init(&fmd->fmd_list);
544 filter_fmd_put_nolock(fed, fmd);
546 spin_unlock(&fed->fed_lock);
549 static int filter_init_export(struct obd_export *exp)
551 spin_lock_init(&exp->exp_filter_data.fed_lock);
552 CFS_INIT_LIST_HEAD(&exp->exp_filter_data.fed_mod_list);
554 spin_lock(&exp->exp_lock);
555 exp->exp_connecting = 1;
556 spin_unlock(&exp->exp_lock);
561 static int filter_free_server_data(struct filter_obd *filter)
563 OBD_FREE(filter->fo_fsd, sizeof(*filter->fo_fsd));
564 filter->fo_fsd = NULL;
565 OBD_FREE(filter->fo_last_rcvd_slots, LR_MAX_CLIENTS / 8);
566 filter->fo_last_rcvd_slots = NULL;
570 /* assumes caller is already in kernel ctxt */
571 int filter_update_server_data(struct obd_device *obd, struct file *filp,
572 struct lr_server_data *fsd, int force_sync)
578 CDEBUG(D_INODE, "server uuid : %s\n", fsd->lsd_uuid);
579 CDEBUG(D_INODE, "server last_rcvd : "LPU64"\n",
580 le64_to_cpu(fsd->lsd_last_transno));
581 CDEBUG(D_INODE, "server last_mount: "LPU64"\n",
582 le64_to_cpu(fsd->lsd_mount_count));
584 fsd->lsd_compat14 = fsd->lsd_last_transno;
585 rc = fsfilt_write_record(obd, filp, fsd, sizeof(*fsd), &off, force_sync);
587 CERROR("error writing lr_server_data: rc = %d\n", rc);
592 int filter_update_last_objid(struct obd_device *obd, obd_gr group,
595 struct filter_obd *filter = &obd->u.filter;
601 if (filter->fo_last_objid_files[group] == NULL) {
602 CERROR("Object group "LPU64" not fully setup; not updating "
603 "last_objid\n", group);
607 CDEBUG(D_INODE, "%s: server last_objid for group "LPU64": "LPU64"\n",
608 obd->obd_name, group, filter->fo_last_objids[group]);
610 tmp = cpu_to_le64(filter->fo_last_objids[group]);
611 rc = fsfilt_write_record(obd, filter->fo_last_objid_files[group],
612 &tmp, sizeof(tmp), &off, force_sync);
614 CERROR("error writing group "LPU64" last objid: rc = %d\n",
618 extern int ost_handle(struct ptlrpc_request *req);
619 /* assumes caller has already in kernel ctxt */
620 static int filter_init_server_data(struct obd_device *obd, struct file * filp)
622 struct filter_obd *filter = &obd->u.filter;
623 struct lr_server_data *fsd;
624 struct filter_client_data *fcd = NULL;
625 struct inode *inode = filp->f_dentry->d_inode;
626 unsigned long last_rcvd_size = i_size_read(inode);
632 /* ensure padding in the struct is the correct size */
633 CLASSERT (offsetof(struct lr_server_data, lsd_padding) +
634 sizeof(fsd->lsd_padding) == LR_SERVER_SIZE);
635 CLASSERT (offsetof(struct filter_client_data, fcd_padding) +
636 sizeof(fcd->fcd_padding) == LR_CLIENT_SIZE);
638 OBD_ALLOC(fsd, sizeof(*fsd));
641 filter->fo_fsd = fsd;
643 OBD_ALLOC(filter->fo_last_rcvd_slots, LR_MAX_CLIENTS / 8);
644 if (filter->fo_last_rcvd_slots == NULL) {
645 OBD_FREE(fsd, sizeof(*fsd));
649 if (last_rcvd_size == 0) {
650 LCONSOLE_WARN("%s: new disk, initializing\n", obd->obd_name);
652 memcpy(fsd->lsd_uuid, obd->obd_uuid.uuid,sizeof(fsd->lsd_uuid));
653 fsd->lsd_last_transno = 0;
654 mount_count = fsd->lsd_mount_count = 0;
655 fsd->lsd_server_size = cpu_to_le32(LR_SERVER_SIZE);
656 fsd->lsd_client_start = cpu_to_le32(LR_CLIENT_START);
657 fsd->lsd_client_size = cpu_to_le16(LR_CLIENT_SIZE);
658 fsd->lsd_subdir_count = cpu_to_le16(FILTER_SUBDIR_COUNT);
659 filter->fo_subdir_count = FILTER_SUBDIR_COUNT;
660 fsd->lsd_feature_incompat = cpu_to_le32(OBD_INCOMPAT_OST);
662 rc = fsfilt_read_record(obd, filp, fsd, sizeof(*fsd), &off);
664 CDEBUG(D_INODE,"OBD filter: error reading %s: rc %d\n",
668 if (strcmp(fsd->lsd_uuid, obd->obd_uuid.uuid) != 0) {
669 LCONSOLE_ERROR_MSG(0x134, "Trying to start OBD %s "
670 "using the wrong disk %s. Were the "
671 "/dev/ assignments rearranged?\n",
672 obd->obd_uuid.uuid, fsd->lsd_uuid);
673 GOTO(err_fsd, rc = -EINVAL);
675 mount_count = le64_to_cpu(fsd->lsd_mount_count);
676 filter->fo_subdir_count = le16_to_cpu(fsd->lsd_subdir_count);
678 /* Assume old last_rcvd format unless I_C_LR is set */
679 if (!(fsd->lsd_feature_incompat &
680 cpu_to_le32(OBD_INCOMPAT_COMMON_LR)))
681 fsd->lsd_last_transno = fsd->lsd_compat14;
685 if (fsd->lsd_feature_incompat & ~cpu_to_le32(FILTER_INCOMPAT_SUPP)) {
686 CERROR("%s: unsupported incompat filesystem feature(s) %x\n",
687 obd->obd_name, le32_to_cpu(fsd->lsd_feature_incompat) &
688 ~FILTER_INCOMPAT_SUPP);
689 GOTO(err_fsd, rc = -EINVAL);
691 if (fsd->lsd_feature_rocompat & ~cpu_to_le32(FILTER_ROCOMPAT_SUPP)) {
692 CERROR("%s: unsupported read-only filesystem feature(s) %x\n",
693 obd->obd_name, le32_to_cpu(fsd->lsd_feature_rocompat) &
694 ~FILTER_ROCOMPAT_SUPP);
695 /* Do something like remount filesystem read-only */
696 GOTO(err_fsd, rc = -EINVAL);
699 CDEBUG(D_INODE, "%s: server last_transno : "LPU64"\n",
700 obd->obd_name, le64_to_cpu(fsd->lsd_last_transno));
701 CDEBUG(D_INODE, "%s: server mount_count: "LPU64"\n",
702 obd->obd_name, mount_count + 1);
703 CDEBUG(D_INODE, "%s: server data size: %u\n",
704 obd->obd_name, le32_to_cpu(fsd->lsd_server_size));
705 CDEBUG(D_INODE, "%s: per-client data start: %u\n",
706 obd->obd_name, le32_to_cpu(fsd->lsd_client_start));
707 CDEBUG(D_INODE, "%s: per-client data size: %u\n",
708 obd->obd_name, le32_to_cpu(fsd->lsd_client_size));
709 CDEBUG(D_INODE, "%s: server subdir_count: %u\n",
710 obd->obd_name, le16_to_cpu(fsd->lsd_subdir_count));
711 CDEBUG(D_INODE, "%s: last_rcvd clients: %lu\n", obd->obd_name,
712 last_rcvd_size <= le32_to_cpu(fsd->lsd_client_start) ? 0 :
713 (last_rcvd_size - le32_to_cpu(fsd->lsd_client_start)) /
714 le16_to_cpu(fsd->lsd_client_size));
716 if (!obd->obd_replayable) {
717 CWARN("%s: recovery support OFF\n", obd->obd_name);
721 for (cl_idx = 0, off = le32_to_cpu(fsd->lsd_client_start);
722 off < last_rcvd_size; cl_idx++) {
724 struct obd_export *exp;
725 struct filter_export_data *fed;
728 OBD_ALLOC(fcd, sizeof(*fcd));
730 GOTO(err_client, rc = -ENOMEM);
733 /* Don't assume off is incremented properly by
734 * fsfilt_read_record(), in case sizeof(*fcd)
735 * isn't the same as fsd->lsd_client_size. */
736 off = le32_to_cpu(fsd->lsd_client_start) +
737 cl_idx * le16_to_cpu(fsd->lsd_client_size);
738 rc = fsfilt_read_record(obd, filp, fcd, sizeof(*fcd), &off);
740 CERROR("error reading FILT %s idx %d off %llu: rc %d\n",
741 LAST_RCVD, cl_idx, off, rc);
742 break; /* read error shouldn't cause startup to fail */
745 if (fcd->fcd_uuid[0] == '\0') {
746 CDEBUG(D_INFO, "skipping zeroed client at offset %d\n",
751 last_rcvd = le64_to_cpu(fcd->fcd_last_rcvd);
753 /* These exports are cleaned up by filter_disconnect(), so they
754 * need to be set up like real exports as filter_connect() does.
756 exp = class_new_export(obd, (struct obd_uuid *)fcd->fcd_uuid);
758 CDEBUG(D_HA, "RCVRNG CLIENT uuid: %s idx: %d lr: "LPU64
759 " srv lr: "LPU64" fcd_group %d\n", fcd->fcd_uuid, cl_idx,
760 last_rcvd, le64_to_cpu(fsd->lsd_last_transno),
761 le32_to_cpu(fcd->fcd_group));
763 if (PTR_ERR(exp) == -EALREADY) {
764 /* export already exists, zero out this one */
765 CERROR("Zeroing out duplicate export due to "
767 fcd->fcd_uuid[0] = '\0';
769 GOTO(err_client, rc = PTR_ERR(exp));
772 fed = &exp->exp_filter_data;
774 fed->fed_group = le32_to_cpu(fcd->fcd_group);
775 filter_export_stats_init(obd, exp);
776 rc = filter_client_add(obd, exp, cl_idx);
777 /* can't fail for existing client */
778 LASSERTF(rc == 0, "rc = %d\n", rc);
781 spin_lock(&exp->exp_lock);
782 exp->exp_connecting = 0;
783 exp->exp_in_recovery = 0;
784 spin_unlock(&exp->exp_lock);
785 obd->obd_max_recoverable_clients++;
786 class_export_put(exp);
789 /* Need to check last_rcvd even for duplicated exports. */
790 CDEBUG(D_OTHER, "client at idx %d has last_rcvd = "LPU64"\n",
793 if (last_rcvd > le64_to_cpu(fsd->lsd_last_transno))
794 fsd->lsd_last_transno = cpu_to_le64(last_rcvd);
798 OBD_FREE(fcd, sizeof(*fcd));
800 obd->obd_last_committed = le64_to_cpu(fsd->lsd_last_transno);
802 target_recovery_init(obd, ost_handle);
805 filter->fo_mount_count = mount_count + 1;
806 fsd->lsd_mount_count = cpu_to_le64(filter->fo_mount_count);
808 /* save it, so mount count and last_transno is current */
809 rc = filter_update_server_data(obd, filp, filter->fo_fsd, 1);
811 GOTO(err_client, rc);
816 target_recovery_fini(obd);
818 filter_free_server_data(filter);
822 static int filter_cleanup_groups(struct obd_device *obd)
824 struct filter_obd *filter = &obd->u.filter;
826 struct dentry *dentry;
830 if (filter->fo_dentry_O_groups != NULL) {
831 for (i = 0; i < filter->fo_group_count; i++) {
832 dentry = filter->fo_dentry_O_groups[i];
836 OBD_FREE(filter->fo_dentry_O_groups,
837 filter->fo_group_count *
838 sizeof(*filter->fo_dentry_O_groups));
839 filter->fo_dentry_O_groups = NULL;
841 if (filter->fo_last_objid_files != NULL) {
842 for (i = 0; i < filter->fo_group_count; i++) {
843 filp = filter->fo_last_objid_files[i];
847 OBD_FREE(filter->fo_last_objid_files,
848 filter->fo_group_count *
849 sizeof(*filter->fo_last_objid_files));
850 filter->fo_last_objid_files = NULL;
852 if (filter->fo_dentry_O_sub != NULL) {
853 for (i = 0; i < filter->fo_group_count; i++) {
854 for (j = 0; j < filter->fo_subdir_count; j++) {
855 dentry = filter->fo_dentry_O_sub[i].dentry[j];
860 OBD_FREE(filter->fo_dentry_O_sub,
861 filter->fo_group_count *
862 sizeof(*filter->fo_dentry_O_sub));
863 filter->fo_dentry_O_sub = NULL;
865 if (filter->fo_last_objids != NULL) {
866 OBD_FREE(filter->fo_last_objids,
867 filter->fo_group_count *
868 sizeof(*filter->fo_last_objids));
869 filter->fo_last_objids = NULL;
871 if (filter->fo_dentry_O != NULL) {
872 f_dput(filter->fo_dentry_O);
873 filter->fo_dentry_O = NULL;
878 static int filter_update_last_group(struct obd_device *obd, int group)
880 struct filter_obd *filter = &obd->u.filter;
881 struct file *filp = NULL;
882 int last_group = 0, rc;
886 if (group <= filter->fo_committed_group)
889 filp = filp_open("LAST_GROUP", O_RDWR, 0700);
893 CERROR("cannot open LAST_GROUP: rc = %d\n", rc);
897 rc = fsfilt_read_record(obd, filp, &last_group, sizeof(__u32), &off);
899 CDEBUG(D_INODE, "error reading LAST_GROUP: rc %d\n",rc);
902 LASSERT(off == 0 || last_group >= FILTER_MIN_GROUPS);
903 CDEBUG(D_INODE, "%s: previous %d, new %d\n",
904 obd->obd_name, last_group, group);
908 /* must be sync: bXXXX */
909 rc = fsfilt_write_record(obd, filp, &last_group, sizeof(__u32), &off, 1);
911 CDEBUG(D_INODE, "error updating LAST_GROUP: rc %d\n", rc);
915 filter->fo_committed_group = group;
922 static int filter_read_group_internal(struct obd_device *obd, int group,
925 struct filter_obd *filter = &obd->u.filter;
926 __u64 *new_objids = NULL;
927 struct filter_subdirs *new_subdirs = NULL, *tmp_subdirs = NULL;
928 struct dentry **new_groups = NULL;
929 struct file **new_files = NULL;
930 struct dentry *dentry;
932 int old_count = filter->fo_group_count, rc, stage = 0, i;
938 snprintf(name, 24, "%d", group);
942 dentry = ll_lookup_one_len(name, filter->fo_dentry_O,
944 if (IS_ERR(dentry)) {
945 CERROR("Cannot lookup expected object group %d: %ld\n",
946 group, PTR_ERR(dentry));
947 RETURN(PTR_ERR(dentry));
950 dentry = simple_mkdir(filter->fo_dentry_O, name, 0700, 1);
951 if (IS_ERR(dentry)) {
952 CERROR("cannot lookup/create O/%s: rc = %ld\n", name,
954 RETURN(PTR_ERR(dentry));
959 snprintf(name, 24, "O/%d/LAST_ID", group);
961 filp = filp_open(name, O_CREAT | O_RDWR, 0700);
963 CERROR("cannot create %s: rc = %ld\n", name, PTR_ERR(filp));
964 GOTO(cleanup, rc = PTR_ERR(filp));
968 rc = fsfilt_read_record(obd, filp, &last_objid, sizeof(__u64), &off);
970 CDEBUG(D_INODE, "error reading %s: rc %d\n", name, rc);
974 if (filter->fo_subdir_count) {
975 OBD_ALLOC(tmp_subdirs, sizeof(*tmp_subdirs));
976 if (tmp_subdirs == NULL)
977 GOTO(cleanup, rc = -ENOMEM);
980 for (i = 0; i < filter->fo_subdir_count; i++) {
982 snprintf(dir, sizeof(dir), "d%u", i);
984 tmp_subdirs->dentry[i] = simple_mkdir(dentry, dir, 0700, 1);
985 if (IS_ERR(tmp_subdirs->dentry[i])) {
986 rc = PTR_ERR(tmp_subdirs->dentry[i]);
987 CERROR("can't lookup/create O/%d/%s: rc = %d\n",
992 CDEBUG(D_INODE, "got/created O/%d/%s: %p\n", group, dir,
993 tmp_subdirs->dentry[i]);
997 /* 'group' is an index; we need an array of length 'group + 1' */
998 if (group + 1 > old_count) {
999 OBD_ALLOC(new_objids, len * sizeof(*new_objids));
1000 OBD_ALLOC(new_subdirs, len * sizeof(*new_subdirs));
1001 OBD_ALLOC(new_groups, len * sizeof(*new_groups));
1002 OBD_ALLOC(new_files, len * sizeof(*new_files));
1004 if (new_objids == NULL || new_subdirs == NULL ||
1005 new_groups == NULL || new_files == NULL)
1006 GOTO(cleanup, rc = -ENOMEM);
1009 memcpy(new_objids, filter->fo_last_objids,
1010 old_count * sizeof(*new_objids));
1011 memcpy(new_subdirs, filter->fo_dentry_O_sub,
1012 old_count * sizeof(*new_subdirs));
1013 memcpy(new_groups, filter->fo_dentry_O_groups,
1014 old_count * sizeof(*new_groups));
1015 memcpy(new_files, filter->fo_last_objid_files,
1016 old_count * sizeof(*new_files));
1018 OBD_FREE(filter->fo_last_objids,
1019 old_count * sizeof(*new_objids));
1020 OBD_FREE(filter->fo_dentry_O_sub,
1021 old_count * sizeof(*new_subdirs));
1022 OBD_FREE(filter->fo_dentry_O_groups,
1023 old_count * sizeof(*new_groups));
1024 OBD_FREE(filter->fo_last_objid_files,
1025 old_count * sizeof(*new_files));
1027 filter->fo_last_objids = new_objids;
1028 filter->fo_dentry_O_sub = new_subdirs;
1029 filter->fo_dentry_O_groups = new_groups;
1030 filter->fo_last_objid_files = new_files;
1031 filter->fo_group_count = len;
1034 filter->fo_dentry_O_groups[group] = dentry;
1035 filter->fo_last_objid_files[group] = filp;
1036 if (filter->fo_subdir_count) {
1037 filter->fo_dentry_O_sub[group] = *tmp_subdirs;
1038 OBD_FREE(tmp_subdirs, sizeof(*tmp_subdirs));
1041 filter_update_last_group(obd, group);
1043 if (i_size_read(filp->f_dentry->d_inode) == 0) {
1044 filter->fo_last_objids[group] = FILTER_INIT_OBJID;
1045 rc = filter_update_last_objid(obd, group, 1);
1049 filter->fo_last_objids[group] = le64_to_cpu(last_objid);
1050 CDEBUG(D_INODE, "%s: server last_objid group %d: "LPU64"\n",
1051 obd->obd_name, group, last_objid);
1056 if (new_objids != NULL)
1057 OBD_FREE(new_objids, len * sizeof(*new_objids));
1058 if (new_subdirs != NULL)
1059 OBD_FREE(new_subdirs, len * sizeof(*new_subdirs));
1060 if (new_groups != NULL)
1061 OBD_FREE(new_groups, len * sizeof(*new_groups));
1062 if (new_files != NULL)
1063 OBD_FREE(new_files, len * sizeof(*new_files));
1065 if (filter->fo_subdir_count) {
1066 for (i = 0; i < filter->fo_subdir_count; i++) {
1067 if (tmp_subdirs->dentry[i] != NULL)
1068 dput(tmp_subdirs->dentry[i]);
1070 OBD_FREE(tmp_subdirs, sizeof(*tmp_subdirs));
1073 filp_close(filp, 0);
1080 static int filter_read_groups(struct obd_device *obd, int last_group,
1083 struct filter_obd *filter = &obd->u.filter;
1084 int old_count, group, rc = 0;
1086 down(&filter->fo_init_lock);
1087 old_count = filter->fo_group_count;
1088 for (group = old_count; group <= last_group; group++) {
1090 continue; /* no group zero */
1092 rc = filter_read_group_internal(obd, group, create);
1096 up(&filter->fo_init_lock);
1100 /* FIXME: object groups */
1101 static int filter_prep_groups(struct obd_device *obd)
1103 struct filter_obd *filter = &obd->u.filter;
1104 struct dentry *dentry, *O_dentry;
1106 int last_group, rc = 0, cleanup_phase = 0;
1110 O_dentry = simple_mkdir(current->fs->pwd, "O", 0700, 1);
1111 CDEBUG(D_INODE, "got/created O: %p\n", O_dentry);
1112 if (IS_ERR(O_dentry)) {
1113 rc = PTR_ERR(O_dentry);
1114 CERROR("cannot open/create O: rc = %d\n", rc);
1117 filter->fo_dentry_O = O_dentry;
1118 cleanup_phase = 1; /* O_dentry */
1120 /* Lookup "R" to tell if we're on an old OST FS and need to convert
1121 * from O/R/<dir>/<objid> to O/0/<dir>/<objid>. This can be removed
1122 * some time post 1.0 when all old-style OSTs have converted along
1123 * with the init_objid hack. */
1124 dentry = ll_lookup_one_len("R", O_dentry, 1);
1126 GOTO(cleanup, rc = PTR_ERR(dentry));
1127 if (dentry->d_inode && S_ISDIR(dentry->d_inode->i_mode)) {
1128 struct dentry *O0_dentry = lookup_one_len("0", O_dentry, 1);
1131 CWARN("converting OST to new object layout\n");
1132 if (IS_ERR(O0_dentry)) {
1133 rc = PTR_ERR(O0_dentry);
1134 CERROR("error looking up O/0: rc %d\n", rc);
1135 GOTO(cleanup_R, rc);
1138 if (O0_dentry->d_inode) {
1139 CERROR("Both O/R and O/0 exist. Fix manually.\n");
1140 GOTO(cleanup_O0, rc = -EEXIST);
1143 LOCK_INODE_MUTEX(O_dentry->d_inode);
1144 rc = vfs_rename(O_dentry->d_inode, dentry,
1145 O_dentry->d_inode, O0_dentry);
1146 UNLOCK_INODE_MUTEX(O_dentry->d_inode);
1149 CERROR("error renaming O/R to O/0: rc %d\n", rc);
1150 GOTO(cleanup_O0, rc);
1152 filter->fo_fsd->lsd_feature_incompat |=
1153 cpu_to_le32(OBD_INCOMPAT_GROUPS);
1154 rc = filter_update_server_data(obd, filter->fo_rcvd_filp,
1156 GOTO(cleanup_O0, rc);
1168 cleanup_phase = 2; /* groups */
1170 /* we have to initialize all groups before first connections from
1171 * clients because they may send create/destroy for any group -bzzz */
1172 filp = filp_open("LAST_GROUP", O_CREAT | O_RDWR, 0700);
1174 CERROR("cannot create LAST_GROUP: rc = %ld\n", PTR_ERR(filp));
1175 GOTO(cleanup, rc = PTR_ERR(filp));
1177 cleanup_phase = 3; /* filp */
1179 rc = fsfilt_read_record(obd, filp, &last_group, sizeof(__u32), &off);
1181 CDEBUG(D_INODE, "error reading LAST_GROUP: rc %d\n", rc);
1185 last_group = FILTER_MIN_GROUPS;
1187 LASSERT(last_group >= FILTER_MIN_GROUPS);
1190 CWARN("%s: initialize groups [%d,%d]\n", obd->obd_name,
1191 FILTER_MIN_GROUPS, last_group);
1192 filter->fo_committed_group = last_group;
1193 rc = filter_read_groups(obd, last_group, 1);
1197 filp_close(filp, 0);
1201 switch (cleanup_phase) {
1203 filp_close(filp, 0);
1205 filter_cleanup_groups(obd);
1207 f_dput(filter->fo_dentry_O);
1208 filter->fo_dentry_O = NULL;
1216 /* setup the object store with correct subdirectories */
1217 static int filter_prep(struct obd_device *obd)
1219 struct lvfs_run_ctxt saved;
1220 struct filter_obd *filter = &obd->u.filter;
1222 struct inode *inode;
1226 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
1227 file = filp_open(LAST_RCVD, O_RDWR | O_CREAT | O_LARGEFILE, 0700);
1228 if (!file || IS_ERR(file)) {
1230 CERROR("OBD filter: cannot open/create %s: rc = %d\n",
1234 filter->fo_rcvd_filp = file;
1235 if (!S_ISREG(file->f_dentry->d_inode->i_mode)) {
1236 CERROR("%s is not a regular file!: mode = %o\n", LAST_RCVD,
1237 file->f_dentry->d_inode->i_mode);
1238 GOTO(err_filp, rc = -ENOENT);
1241 inode = file->f_dentry->d_parent->d_inode;
1242 /* We use i_op->unlink directly in filter_vfs_unlink() */
1243 if (!inode->i_op || !inode->i_op->create || !inode->i_op->unlink) {
1244 CERROR("%s: filesystem does not support create/unlink ops\n",
1246 GOTO(err_filp, rc = -EOPNOTSUPP);
1249 rc = filter_init_server_data(obd, file);
1251 CERROR("cannot read %s: rc = %d\n", LAST_RCVD, rc);
1254 /* open and create health check io file*/
1255 file = filp_open(HEALTH_CHECK, O_RDWR | O_CREAT, 0644);
1258 CERROR("OBD filter: cannot open/create %s rc = %d\n",
1260 GOTO(err_server_data, rc);
1262 filter->fo_health_check_filp = file;
1263 if (!S_ISREG(file->f_dentry->d_inode->i_mode)) {
1264 CERROR("%s is not a regular file!: mode = %o\n", HEALTH_CHECK,
1265 file->f_dentry->d_inode->i_mode);
1266 GOTO(err_health_check, rc = -ENOENT);
1268 rc = lvfs_check_io_health(obd, file);
1270 GOTO(err_health_check, rc);
1272 rc = filter_prep_groups(obd);
1274 GOTO(err_health_check, rc);
1276 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
1281 if (filp_close(filter->fo_health_check_filp, 0))
1282 CERROR("can't close %s after error\n", HEALTH_CHECK);
1283 filter->fo_health_check_filp = NULL;
1285 target_recovery_fini(obd);
1286 filter_free_server_data(filter);
1288 if (filp_close(filter->fo_rcvd_filp, 0))
1289 CERROR("can't close %s after error\n", LAST_RCVD);
1290 filter->fo_rcvd_filp = NULL;
1294 /* cleanup the filter: write last used object id to status file */
1295 static void filter_post(struct obd_device *obd)
1297 struct lvfs_run_ctxt saved;
1298 struct filter_obd *filter = &obd->u.filter;
1301 /* XXX: filter_update_lastobjid used to call fsync_dev. It might be
1302 * best to start a transaction with h_sync, because we removed this
1305 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
1306 rc = filter_update_server_data(obd, filter->fo_rcvd_filp,
1309 CERROR("error writing server data: rc = %d\n", rc);
1311 for (i = 1; i < filter->fo_group_count; i++) {
1312 rc = filter_update_last_objid(obd, i,
1313 (i == filter->fo_group_count - 1));
1315 CERROR("error writing group %d lastobjid: rc = %d\n",
1319 rc = filp_close(filter->fo_rcvd_filp, 0);
1320 filter->fo_rcvd_filp = NULL;
1322 CERROR("error closing %s: rc = %d\n", LAST_RCVD, rc);
1324 rc = filp_close(filter->fo_health_check_filp, 0);
1325 filter->fo_health_check_filp = NULL;
1327 CERROR("error closing %s: rc = %d\n", HEALTH_CHECK, rc);
1329 filter_cleanup_groups(obd);
1330 filter_free_server_data(filter);
1331 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
1333 filter_free_capa_keys(filter);
1334 cleanup_capa_hash(filter->fo_capa_hash);
1337 static void filter_set_last_id(struct filter_obd *filter,
1338 obd_id id, obd_gr group)
1340 LASSERT(filter->fo_fsd != NULL);
1341 LASSERT(group <= filter->fo_group_count);
1343 spin_lock(&filter->fo_objidlock);
1344 filter->fo_last_objids[group] = id;
1345 spin_unlock(&filter->fo_objidlock);
1348 obd_id filter_last_id(struct filter_obd *filter, obd_gr group)
1351 LASSERT(filter->fo_fsd != NULL);
1352 LASSERT(group <= filter->fo_group_count);
1354 /* FIXME: object groups */
1355 spin_lock(&filter->fo_objidlock);
1356 id = filter->fo_last_objids[group];
1357 spin_unlock(&filter->fo_objidlock);
1362 static int filter_lock_dentry(struct obd_device *obd, struct dentry *dparent)
1364 LOCK_INODE_MUTEX(dparent->d_inode);
1368 /* We never dget the object parent, so DON'T dput it either */
1369 struct dentry *filter_parent(struct obd_device *obd, obd_gr group, obd_id objid)
1371 struct filter_obd *filter = &obd->u.filter;
1372 struct filter_subdirs *subdirs;
1373 LASSERT(group < filter->fo_group_count); /* FIXME: object groups */
1375 if (group > 0 || filter->fo_subdir_count == 0)
1376 return filter->fo_dentry_O_groups[group];
1378 subdirs = &filter->fo_dentry_O_sub[group];
1379 return subdirs->dentry[objid & (filter->fo_subdir_count - 1)];
1382 /* We never dget the object parent, so DON'T dput it either */
1383 struct dentry *filter_parent_lock(struct obd_device *obd, obd_gr group,
1386 unsigned long now = jiffies;
1387 struct dentry *dparent = filter_parent(obd, group, objid);
1390 if (IS_ERR(dparent))
1392 if (dparent == NULL)
1393 return ERR_PTR(-ENOENT);
1395 rc = filter_lock_dentry(obd, dparent);
1396 fsfilt_check_slow(obd, now, obd_timeout, "parent lock");
1397 return rc ? ERR_PTR(rc) : dparent;
1400 /* We never dget the object parent, so DON'T dput it either */
1401 static void filter_parent_unlock(struct dentry *dparent)
1403 UNLOCK_INODE_MUTEX(dparent->d_inode);
1406 /* How to get files, dentries, inodes from object id's.
1408 * If dir_dentry is passed, the caller has already locked the parent
1409 * appropriately for this operation (normally a write lock). If
1410 * dir_dentry is NULL, we do a read lock while we do the lookup to
1411 * avoid races with create/destroy and such changing the directory
1412 * internal to the filesystem code. */
1413 struct dentry *filter_fid2dentry(struct obd_device *obd,
1414 struct dentry *dir_dentry,
1415 obd_gr group, obd_id id)
1417 struct dentry *dparent = dir_dentry;
1418 struct dentry *dchild;
1423 if (OBD_FAIL_CHECK(OBD_FAIL_OST_ENOENT) &&
1424 obd->u.filter.fo_destroys_in_progress == 0) {
1425 /* don't fail lookups for orphan recovery, it causes
1426 * later LBUGs when objects still exist during precreate */
1427 CDEBUG(D_INFO, "*** obd_fail_loc=%x ***\n",OBD_FAIL_OST_ENOENT);
1428 RETURN(ERR_PTR(-ENOENT));
1431 CERROR("fatal: invalid object id 0\n");
1432 RETURN(ERR_PTR(-ESTALE));
1435 len = sprintf(name, LPU64, id);
1436 if (dir_dentry == NULL) {
1437 dparent = filter_parent_lock(obd, group, id);
1438 if (IS_ERR(dparent)) {
1439 CERROR("%s: error getting object "LPU64":"LPU64
1440 " parent: rc %ld\n", obd->obd_name,
1441 id, group, PTR_ERR(dparent));
1445 CDEBUG(D_INODE, "looking up object O/%.*s/%s\n",
1446 dparent->d_name.len, dparent->d_name.name, name);
1447 dchild = /*ll_*/lookup_one_len(name, dparent, len);
1448 if (dir_dentry == NULL)
1449 filter_parent_unlock(dparent);
1450 if (IS_ERR(dchild)) {
1451 CERROR("%s: child lookup error %ld\n", obd->obd_name,
1456 if (dchild->d_inode != NULL && is_bad_inode(dchild->d_inode)) {
1457 CERROR("%s: got bad object "LPU64" inode %lu\n",
1458 obd->obd_name, id, dchild->d_inode->i_ino);
1460 RETURN(ERR_PTR(-ENOENT));
1463 CDEBUG(D_INODE, "got child objid %s: %p, count = %d\n",
1464 name, dchild, atomic_read(&dchild->d_count));
1466 LASSERT(atomic_read(&dchild->d_count) > 0);
1471 static int filter_prepare_destroy(struct obd_device *obd, obd_id objid,
1474 struct lustre_handle lockh;
1475 int flags = LDLM_AST_DISCARD_DATA, rc;
1476 struct ldlm_res_id res_id = { .name = { objid, 0, group, 0} };
1477 ldlm_policy_data_t policy = { .l_extent = { 0, OBD_OBJECT_EOF } };
1480 /* Tell the clients that the object is gone now and that they should
1481 * throw away any cached pages. */
1482 rc = ldlm_cli_enqueue_local(obd->obd_namespace, &res_id, LDLM_EXTENT,
1483 &policy, LCK_PW, &flags, ldlm_blocking_ast,
1484 ldlm_completion_ast, NULL, NULL, 0, NULL,
1487 /* We only care about the side-effects, just drop the lock. */
1489 ldlm_lock_decref(&lockh, LCK_PW);
1494 /* This is vfs_unlink() without down(i_sem). If we call regular vfs_unlink()
1495 * we have 2.6 lock ordering issues with filter_commitrw_write() as it takes
1496 * i_sem before starting a handle, while filter_destroy() + vfs_unlink do the
1497 * reverse. Caller must take i_sem before starting the transaction and we
1498 * drop it here before the inode is removed from the dentry. bug 4180/6984 */
1499 int filter_vfs_unlink(struct inode *dir, struct dentry *dentry)
1504 /* don't need dir->i_zombie for 2.4, it is for rename/unlink of dir
1505 * itself we already hold dir->i_mutex for child create/unlink ops */
1506 LASSERT(dentry->d_inode != NULL);
1507 LASSERT(TRYLOCK_INODE_MUTEX(dir) == 0);
1508 LASSERT(TRYLOCK_INODE_MUTEX(dentry->d_inode) == 0);
1512 if (/*!dentry->d_inode ||*/dentry->d_parent->d_inode != dir)
1513 GOTO(out, rc = -ENOENT);
1515 rc = ll_permission(dir, MAY_WRITE | MAY_EXEC, NULL);
1520 GOTO(out, rc = -EPERM);
1522 /* check_sticky() */
1523 if ((dentry->d_inode->i_uid != current->fsuid && !capable(CAP_FOWNER))||
1524 IS_APPEND(dentry->d_inode) || IS_IMMUTABLE(dentry->d_inode))
1525 GOTO(out, rc = -EPERM);
1527 /* NOTE: This might need to go outside i_mutex, though it isn't clear if
1528 * that was done because of journal_start (which is already done
1529 * here) or some other ordering issue. */
1532 rc = security_inode_unlink(dir, dentry);
1536 rc = dir->i_op->unlink(dir, dentry);
1538 /* need to drop i_mutex before we lose inode reference */
1539 UNLOCK_INODE_MUTEX(dentry->d_inode);
1546 /* Caller must hold LCK_PW on parent and push us into kernel context.
1547 * Caller must hold child i_mutex, we drop it always.
1548 * Caller is also required to ensure that dchild->d_inode exists. */
1549 static int filter_destroy_internal(struct obd_device *obd, obd_id objid,
1550 obd_gr group, struct dentry *dparent,
1551 struct dentry *dchild)
1553 struct inode *inode = dchild->d_inode;
1556 if (inode->i_nlink != 1 || atomic_read(&inode->i_count) != 1) {
1557 CERROR("destroying objid %.*s ino %lu nlink %lu count %d\n",
1558 dchild->d_name.len, dchild->d_name.name, inode->i_ino,
1559 (unsigned long)inode->i_nlink,
1560 atomic_read(&inode->i_count));
1563 rc = filter_vfs_unlink(dparent->d_inode, dchild);
1565 CERROR("error unlinking objid %.*s: rc %d\n",
1566 dchild->d_name.len, dchild->d_name.name, rc);
1570 struct filter_intent_args {
1571 struct ldlm_lock **victim;
1576 static enum interval_iter filter_intent_cb(struct interval_node *n,
1579 struct ldlm_interval *node = (struct ldlm_interval *)n;
1580 struct filter_intent_args *arg = (struct filter_intent_args*)args;
1581 __u64 size = arg->size;
1582 struct ldlm_lock **v = arg->victim;
1583 struct ldlm_lock *lck;
1585 /* If the interval is lower than the current file size,
1587 if (interval_high(n) <= size)
1588 return INTERVAL_ITER_STOP;
1590 list_for_each_entry(lck, &node->li_group, l_sl_policy) {
1591 /* Don't send glimpse ASTs to liblustre clients.
1592 * They aren't listening for them, and they do
1593 * entirely synchronous I/O anyways. */
1594 if (lck->l_export == NULL ||
1595 lck->l_export->exp_libclient == 1)
1598 if (*arg->liblustre)
1599 *arg->liblustre = 0;
1602 *v = LDLM_LOCK_GET(lck);
1603 } else if ((*v)->l_policy_data.l_extent.start <
1604 lck->l_policy_data.l_extent.start) {
1606 *v = LDLM_LOCK_GET(lck);
1609 /* the same policy group - every lock has the
1610 * same extent, so needn't do it any more */
1614 return INTERVAL_ITER_CONT;
1617 static int filter_intent_policy(struct ldlm_namespace *ns,
1618 struct ldlm_lock **lockp, void *req_cookie,
1619 ldlm_mode_t mode, int flags, void *data)
1621 struct list_head rpc_list = CFS_LIST_HEAD_INIT(rpc_list);
1622 struct ptlrpc_request *req = req_cookie;
1623 struct ldlm_lock *lock = *lockp, *l = NULL;
1624 struct ldlm_resource *res = lock->l_resource;
1625 ldlm_processing_policy policy;
1626 struct ost_lvb *res_lvb, *reply_lvb;
1627 struct ldlm_reply *rep;
1629 int idx, rc, tmpflags = 0, only_liblustre = 1;
1630 struct ldlm_interval_tree *tree;
1631 struct filter_intent_args arg;
1632 int repsize[3] = { [MSG_PTLRPC_BODY_OFF] = sizeof(struct ptlrpc_body),
1633 [DLM_LOCKREPLY_OFF] = sizeof(*rep),
1634 [DLM_REPLY_REC_OFF] = sizeof(*reply_lvb) };
1637 policy = ldlm_get_processing_policy(res);
1638 LASSERT(policy != NULL);
1639 LASSERT(req != NULL);
1641 rc = lustre_pack_reply(req, 3, repsize, NULL);
1643 RETURN(req->rq_status = rc);
1645 rep = lustre_msg_buf(req->rq_repmsg, DLM_LOCKREPLY_OFF, sizeof(*rep));
1646 LASSERT(rep != NULL);
1648 reply_lvb = lustre_msg_buf(req->rq_repmsg, DLM_REPLY_REC_OFF,
1649 sizeof(*reply_lvb));
1650 LASSERT(reply_lvb != NULL);
1652 //fixup_handle_for_resent_req(req, lock, &lockh);
1654 /* If we grant any lock at all, it will be a whole-file read lock.
1655 * Call the extent policy function to see if our request can be
1656 * granted, or is blocked.
1657 * If the OST lock has LDLM_FL_HAS_INTENT set, it means a glimpse lock
1659 lock->l_policy_data.l_extent.start = 0;
1660 lock->l_policy_data.l_extent.end = OBD_OBJECT_EOF;
1661 lock->l_req_mode = LCK_PR;
1663 LASSERT(ns == res->lr_namespace);
1665 rc = policy(lock, &tmpflags, 0, &err, &rpc_list);
1666 check_res_locked(res);
1668 /* FIXME: we should change the policy function slightly, to not make
1669 * this list at all, since we just turn around and free it */
1670 while (!list_empty(&rpc_list)) {
1671 struct ldlm_lock *wlock =
1672 list_entry(rpc_list.next, struct ldlm_lock, l_cp_ast);
1673 LASSERT((lock->l_flags & LDLM_FL_AST_SENT) == 0);
1674 LASSERT(lock->l_flags & LDLM_FL_CP_REQD);
1675 lock->l_flags &= ~LDLM_FL_CP_REQD;
1676 list_del_init(&wlock->l_cp_ast);
1677 LDLM_LOCK_PUT(wlock);
1680 /* The lock met with no resistance; we're finished. */
1681 if (rc == LDLM_ITER_CONTINUE) {
1682 /* do not grant locks to the liblustre clients: they cannot
1683 * handle ASTs robustly. We need to do this while still
1684 * holding ns_lock to avoid the lock remaining on the res_link
1685 * list (and potentially being added to l_pending_list by an
1686 * AST) when we are going to drop this lock ASAP. */
1687 if (lock->l_export->exp_libclient ||
1688 OBD_FAIL_TIMEOUT(OBD_FAIL_LDLM_GLIMPSE, 2)) {
1689 ldlm_resource_unlink_lock(lock);
1690 err = ELDLM_LOCK_ABORTED;
1692 err = ELDLM_LOCK_REPLACED;
1698 /* Do not grant any lock, but instead send GL callbacks. The extent
1699 * policy nicely created a list of all PW locks for us. We will choose
1700 * the highest of those which are larger than the size in the LVB, if
1701 * any, and perform a glimpse callback. */
1702 res_lvb = res->lr_lvb_data;
1703 LASSERT(res_lvb != NULL);
1704 *reply_lvb = *res_lvb;
1707 * ->ns_lock guarantees that no new locks are granted, and,
1708 * therefore, that res->lr_lvb_data cannot increase beyond the
1709 * end of already granted lock. As a result, it is safe to
1710 * check against "stale" reply_lvb->lvb_size value without
1713 arg.size = reply_lvb->lvb_size;
1715 arg.liblustre = &only_liblustre;
1716 for (idx = 0; idx < LCK_MODE_NUM; idx++) {
1717 tree = &res->lr_itree[idx];
1718 if (tree->lit_mode == LCK_PR)
1721 interval_iterate_reverse(tree->lit_root,
1722 filter_intent_cb, &arg);
1726 /* There were no PW locks beyond the size in the LVB; finished. */
1728 if (only_liblustre) {
1729 /* If we discovered a liblustre client with a PW lock,
1730 * however, the LVB may be out of date! The LVB is
1731 * updated only on glimpse (which we don't do for
1732 * liblustre clients) and cancel (which the client
1733 * obviously has not yet done). So if it has written
1734 * data but kept the lock, the LVB is stale and needs
1735 * to be updated from disk.
1737 * Of course, this will all disappear when we switch to
1738 * taking liblustre locks on the OST. */
1739 ldlm_res_lvbo_update(res, NULL, 0, 1);
1741 RETURN(ELDLM_LOCK_ABORTED);
1745 * This check is for lock taken in filter_prepare_destroy() that does
1746 * not have l_glimpse_ast set. So the logic is: if there is a lock
1747 * with no l_glimpse_ast set, this object is being destroyed already.
1749 * Hence, if you are grabbing DLM locks on the server, always set
1750 * non-NULL glimpse_ast (e.g., ldlm_request.c:ldlm_glimpse_ast()).
1752 if (l->l_glimpse_ast == NULL) {
1753 /* We are racing with unlink(); just return -ENOENT */
1754 rep->lock_policy_res1 = -ENOENT;
1758 LASSERTF(l->l_glimpse_ast != NULL, "l == %p", l);
1759 rc = l->l_glimpse_ast(l, NULL); /* this will update the LVB */
1760 /* Update the LVB from disk if the AST failed (this is a legal race) */
1762 * XXX nikita: situation when ldlm_server_glimpse_ast() failed before
1763 * sending ast is not handled. This can result in lost client writes.
1766 ldlm_res_lvbo_update(res, NULL, 0, 1);
1769 *reply_lvb = *res_lvb;
1775 RETURN(ELDLM_LOCK_ABORTED);
1779 * per-obd_device iobuf pool.
1781 * To avoid memory deadlocks in low-memory setups, amount of dynamic
1782 * allocations in write-path has to be minimized (see bug 5137).
1784 * Pages, niobuf_local's and niobuf_remote's are pre-allocated and attached to
1785 * OST threads (see ost_thread_{init,done}()).
1787 * "iobuf's" used by filter cannot be attached to OST thread, however, because
1788 * at the OST layer there are only (potentially) multiple obd_device of type
1789 * unknown at the time of OST thread creation.
1791 * Instead array of iobuf's is attached to struct filter_obd (->fo_iobuf_pool
1792 * field). This array has size OST_MAX_THREADS, so that each OST thread uses
1793 * it's very own iobuf.
1797 * filter_kiobuf_pool_init()
1799 * filter_kiobuf_pool_done()
1801 * filter_iobuf_get()
1803 * operate on this array. They are "generic" in a sense that they don't depend
1804 * on actual type of iobuf's (the latter depending on Linux kernel version).
1808 * destroy pool created by filter_iobuf_pool_init
1810 static void filter_iobuf_pool_done(struct filter_obd *filter)
1812 struct filter_iobuf **pool;
1817 pool = filter->fo_iobuf_pool;
1819 for (i = 0; i < filter->fo_iobuf_count; ++ i) {
1820 if (pool[i] != NULL)
1821 filter_free_iobuf(pool[i]);
1823 OBD_FREE(pool, filter->fo_iobuf_count * sizeof pool[0]);
1824 filter->fo_iobuf_pool = NULL;
1830 * pre-allocate pool of iobuf's to be used by filter_{prep,commit}rw_write().
1832 static int filter_iobuf_pool_init(struct filter_obd *filter)
1839 OBD_ALLOC_GFP(filter->fo_iobuf_pool, OSS_THREADS_MAX * sizeof(*pool),
1841 if (filter->fo_iobuf_pool == NULL)
1844 filter->fo_iobuf_count = OSS_THREADS_MAX;
1849 /* Return iobuf allocated for @thread_id. We don't know in advance how
1850 * many threads there will be so we allocate a large empty array and only
1851 * fill in those slots that are actually in use.
1852 * If we haven't allocated a pool entry for this thread before, do so now. */
1853 void *filter_iobuf_get(struct filter_obd *filter, struct obd_trans_info *oti)
1855 int thread_id = oti ? oti->oti_thread_id : -1;
1856 struct filter_iobuf *pool = NULL;
1857 struct filter_iobuf **pool_place = NULL;
1859 if (thread_id >= 0) {
1860 LASSERT(thread_id < filter->fo_iobuf_count);
1861 pool = *(pool_place = &filter->fo_iobuf_pool[thread_id]);
1864 if (unlikely(pool == NULL)) {
1865 pool = filter_alloc_iobuf(filter, OBD_BRW_WRITE,
1866 PTLRPC_MAX_BRW_PAGES);
1867 if (pool_place != NULL)
1874 /* mount the file system (secretly). lustre_cfg parameters are:
1877 * 3 = flags: failover=f, failout=n
1880 int filter_common_setup(struct obd_device *obd, struct lustre_cfg* lcfg,
1883 struct filter_obd *filter = &obd->u.filter;
1884 struct vfsmount *mnt;
1885 struct lustre_mount_info *lmi;
1886 struct obd_uuid uuid;
1893 if (lcfg->lcfg_bufcount < 3 ||
1894 LUSTRE_CFG_BUFLEN(lcfg, 1) < 1 ||
1895 LUSTRE_CFG_BUFLEN(lcfg, 2) < 1)
1898 lmi = server_get_mount(obd->obd_name);
1900 /* We already mounted in lustre_fill_super.
1901 lcfg bufs 1, 2, 4 (device, fstype, mount opts) are ignored.*/
1902 struct lustre_sb_info *lsi = s2lsi(lmi->lmi_sb);
1904 obd->obd_fsops = fsfilt_get_ops(MT_STR(lsi->lsi_ldd));
1906 /* old path - used by lctl */
1907 CERROR("Using old MDS mount method\n");
1908 mnt = ll_kern_mount(lustre_cfg_string(lcfg, 2),
1909 MS_NOATIME|MS_NODIRATIME,
1910 lustre_cfg_string(lcfg, 1), option);
1913 LCONSOLE_ERROR_MSG(0x135, "Can't mount disk %s (%d)\n",
1914 lustre_cfg_string(lcfg, 1), rc);
1918 obd->obd_fsops = fsfilt_get_ops(lustre_cfg_string(lcfg, 2));
1920 if (IS_ERR(obd->obd_fsops))
1921 GOTO(err_mntput, rc = PTR_ERR(obd->obd_fsops));
1923 rc = filter_iobuf_pool_init(filter);
1927 LASSERT(!lvfs_check_rdonly(lvfs_sbdev(mnt->mnt_sb)));
1929 /* failover is the default */
1930 obd->obd_replayable = 1;
1932 if (lcfg->lcfg_bufcount > 3 && LUSTRE_CFG_BUFLEN(lcfg, 3) > 0) {
1933 str = lustre_cfg_string(lcfg, 3);
1934 if (strchr(str, 'n')) {
1935 CWARN("%s: recovery disabled\n", obd->obd_name);
1936 obd->obd_replayable = 0;
1940 filter->fo_vfsmnt = mnt;
1941 obd->u.obt.obt_sb = mnt->mnt_sb;
1942 filter->fo_fstype = mnt->mnt_sb->s_type->name;
1943 CDEBUG(D_SUPER, "%s: mnt = %p\n", filter->fo_fstype, mnt);
1945 fsfilt_setup(obd, obd->u.obt.obt_sb);
1947 OBD_SET_CTXT_MAGIC(&obd->obd_lvfs_ctxt);
1948 obd->obd_lvfs_ctxt.pwdmnt = mnt;
1949 obd->obd_lvfs_ctxt.pwd = mnt->mnt_root;
1950 obd->obd_lvfs_ctxt.fs = get_ds();
1951 obd->obd_lvfs_ctxt.cb_ops = filter_lvfs_ops;
1953 sema_init(&filter->fo_init_lock, 1);
1954 filter->fo_committed_group = 0;
1956 rc = filter_prep(obd);
1960 filter->fo_destroys_in_progress = 0;
1961 for (i = 0; i < 32; i++)
1962 sema_init(&filter->fo_create_locks[i], 1);
1964 spin_lock_init(&filter->fo_translock);
1965 spin_lock_init(&filter->fo_objidlock);
1966 CFS_INIT_LIST_HEAD(&filter->fo_export_list);
1967 sema_init(&filter->fo_alloc_lock, 1);
1968 init_brw_stats(&filter->fo_filter_stats);
1969 filter->fo_readcache_max_filesize = FILTER_MAX_CACHE_SIZE;
1970 filter->fo_fmd_max_num = FILTER_FMD_MAX_NUM_DEFAULT;
1971 filter->fo_fmd_max_age = FILTER_FMD_MAX_AGE_DEFAULT;
1973 CFS_INIT_LIST_HEAD(&filter->fo_llog_list);
1974 spin_lock_init(&filter->fo_llog_list_lock);
1976 filter->fo_sptlrpc_lock = RW_LOCK_UNLOCKED;
1977 sptlrpc_rule_set_init(&filter->fo_sptlrpc_rset);
1979 filter->fo_fl_oss_capa = 0;
1980 CFS_INIT_LIST_HEAD(&filter->fo_capa_keys);
1981 filter->fo_capa_hash = init_capa_hash();
1982 if (filter->fo_capa_hash == NULL)
1983 GOTO(err_ops, rc = -ENOMEM);
1985 sprintf(ns_name, "filter-%s", obd->obd_uuid.uuid);
1986 obd->obd_namespace = ldlm_namespace_new(ns_name, LDLM_NAMESPACE_SERVER,
1987 LDLM_NAMESPACE_GREEDY);
1988 if (obd->obd_namespace == NULL)
1989 GOTO(err_post, rc = -ENOMEM);
1990 obd->obd_namespace->ns_lvbp = obd;
1991 obd->obd_namespace->ns_lvbo = &filter_lvbo;
1992 ldlm_register_intent(obd->obd_namespace, filter_intent_policy);
1994 ptlrpc_init_client(LDLM_CB_REQUEST_PORTAL, LDLM_CB_REPLY_PORTAL,
1995 "filter_ldlm_cb_client", &obd->obd_ldlm_client);
1997 rc = llog_cat_initialize(obd, &obd->obd_olg, 1, NULL);
1999 CERROR("failed to setup llogging subsystems\n");
2003 rc = lquota_setup(filter_quota_interface_ref, obd);
2007 uuid_ptr = fsfilt_uuid(obd, obd->u.obt.obt_sb);
2008 if (uuid_ptr != NULL) {
2009 class_uuid_unparse(uuid_ptr, &uuid);
2015 label = fsfilt_get_label(obd, obd->u.obt.obt_sb);
2017 if (obd->obd_recovering) {
2018 LCONSOLE_WARN("OST %s now serving %s (%s%s%s), but will be in "
2019 "recovery until %d %s reconnect, or if no clients"
2020 " reconnect for %d:%.02d; during that time new "
2021 "clients will not be allowed to connect. "
2022 "Recovery progress can be monitored by watching "
2023 "/proc/fs/lustre/obdfilter/%s/recovery_status.\n",
2024 obd->obd_name, lustre_cfg_string(lcfg, 1),
2025 label ?: "", label ? "/" : "", str,
2026 obd->obd_max_recoverable_clients,
2027 (obd->obd_max_recoverable_clients == 1)
2028 ? "client" : "clients",
2029 (int)(OBD_RECOVERY_TIMEOUT) / 60,
2030 (int)(OBD_RECOVERY_TIMEOUT) % 60,
2033 LCONSOLE_INFO("OST %s now serving %s (%s%s%s) with recovery "
2034 "%s\n", obd->obd_name, lustre_cfg_string(lcfg, 1),
2035 label ?: "", label ? "/" : "", str,
2036 obd->obd_replayable ? "enabled" : "disabled");
2044 fsfilt_put_ops(obd->obd_fsops);
2045 filter_iobuf_pool_done(filter);
2047 server_put_mount(obd->obd_name, mnt);
2048 obd->u.obt.obt_sb = 0;
2052 static int filter_setup(struct obd_device *obd, struct lustre_cfg* lcfg)
2054 struct lprocfs_static_vars lvars;
2059 CLASSERT(offsetof(struct obd_device, u.obt) ==
2060 offsetof(struct obd_device, u.filter.fo_obt));
2062 if (!LUSTRE_CFG_BUFLEN(lcfg, 1) || !LUSTRE_CFG_BUFLEN(lcfg, 2))
2065 /* 2.6.9 selinux wants a full option page for do_kern_mount (bug6471) */
2066 OBD_PAGE_ALLOC(page, CFS_ALLOC_STD);
2069 addr = (unsigned long)cfs_page_address(page);
2070 clear_page((void *)addr);
2072 /* lprocfs must be setup before the filter so state can be safely added
2073 * to /proc incrementally as the filter is setup */
2074 lprocfs_filter_init_vars(&lvars);
2075 if (lprocfs_obd_setup(obd, lvars.obd_vars) == 0 &&
2076 lprocfs_alloc_obd_stats(obd, LPROC_FILTER_LAST) == 0) {
2077 /* Init obdfilter private stats here */
2078 lprocfs_counter_init(obd->obd_stats, LPROC_FILTER_READ_BYTES,
2079 LPROCFS_CNTR_AVGMINMAX,
2080 "read_bytes", "bytes");
2081 lprocfs_counter_init(obd->obd_stats, LPROC_FILTER_WRITE_BYTES,
2082 LPROCFS_CNTR_AVGMINMAX,
2083 "write_bytes", "bytes");
2085 lproc_filter_attach_seqstat(obd);
2086 obd->obd_proc_exports = proc_mkdir("exports",
2087 obd->obd_proc_entry);
2090 memcpy((void *)addr, lustre_cfg_buf(lcfg, 4),
2091 LUSTRE_CFG_BUFLEN(lcfg, 4));
2092 rc = filter_common_setup(obd, lcfg, (void *)addr);
2093 OBD_PAGE_FREE(page);
2096 lprocfs_obd_cleanup(obd);
2097 lprocfs_free_obd_stats(obd);
2103 static struct llog_operations filter_mds_ost_repl_logops /* initialized below*/;
2104 static struct llog_operations filter_size_orig_logops = {
2105 lop_setup: llog_obd_origin_setup,
2106 lop_cleanup: llog_obd_origin_cleanup,
2107 lop_add: llog_obd_origin_add
2110 static int filter_llog_init(struct obd_device *obd, int group,
2111 struct obd_device *tgt, int count,
2112 struct llog_catid *catid,
2113 struct obd_uuid *uuid)
2115 struct filter_obd *filter = &obd->u.filter;
2116 struct obd_llog_group *olg;
2117 struct llog_ctxt *ctxt;
2121 olg = filter_find_olg(obd, group);
2123 RETURN(PTR_ERR(olg));
2125 if (group == OBD_LLOG_GROUP) {
2126 LASSERT(filter->fo_lcm == NULL);
2127 OBD_ALLOC(filter->fo_lcm, sizeof(struct llog_commit_master));
2128 if (!filter->fo_lcm)
2131 rc = llog_init_commit_master((struct llog_commit_master *)
2136 filter_mds_ost_repl_logops = llog_client_ops;
2137 filter_mds_ost_repl_logops.lop_cancel = llog_obd_repl_cancel;
2138 filter_mds_ost_repl_logops.lop_connect = llog_repl_connect;
2139 filter_mds_ost_repl_logops.lop_sync = llog_obd_repl_sync;
2141 LASSERT(filter->fo_lcm != NULL);
2143 rc = llog_setup(obd, olg, LLOG_MDS_OST_REPL_CTXT, tgt, 0, NULL,
2144 &filter_mds_ost_repl_logops);
2148 /* FIXME - assign unlink_cb for filter's recovery */
2150 ctxt = llog_group_get_ctxt(olg, LLOG_MDS_OST_REPL_CTXT);
2152 LASSERT(ctxt != NULL);
2153 ctxt->llog_proc_cb = filter_recov_log_mds_ost_cb;
2154 ctxt->loc_lcm = obd->u.filter.fo_lcm;
2155 rc = llog_start_commit_thread(ctxt->loc_lcm);
2156 llog_ctxt_put(ctxt);
2160 rc = llog_setup(obd, olg, LLOG_SIZE_ORIG_CTXT, tgt, 0, NULL,
2161 &filter_size_orig_logops);
2165 llog_cleanup_commit_master(filter->fo_lcm, 0);
2166 OBD_FREE(filter->fo_lcm, sizeof(struct llog_commit_master));
2167 filter->fo_lcm = NULL;
2172 static int filter_group_llog_finish(struct obd_llog_group *olg)
2174 struct llog_ctxt *ctxt;
2175 int rc = 0, rc2 = 0;
2178 ctxt = llog_group_get_ctxt(olg, LLOG_MDS_OST_REPL_CTXT);
2180 rc = llog_cleanup(ctxt);
2182 ctxt = llog_group_get_ctxt(olg, LLOG_SIZE_ORIG_CTXT);
2184 rc2 = llog_cleanup(ctxt);
2191 static int filter_llog_finish(struct obd_device *obd, int count)
2196 if (obd->u.filter.fo_lcm) {
2197 llog_cleanup_commit_master((struct llog_commit_master *)
2198 obd->u.filter.fo_lcm, 0);
2199 OBD_FREE(obd->u.filter.fo_lcm,
2200 sizeof(struct llog_commit_master));
2201 obd->u.filter.fo_lcm = NULL;
2203 /* finish obd llog group */
2204 rc = filter_group_llog_finish(&obd->obd_olg);
2209 struct obd_llog_group *filter_find_olg(struct obd_device *obd, int group)
2211 struct obd_llog_group *olg, *nolg;
2212 struct filter_obd *filter;
2215 filter = &obd->u.filter;
2217 if (group == OBD_LLOG_GROUP)
2218 RETURN(&obd->obd_olg);
2220 spin_lock(&filter->fo_llog_list_lock);
2221 list_for_each_entry(olg, &filter->fo_llog_list, olg_list) {
2222 if (olg->olg_group == group) {
2223 spin_unlock(&filter->fo_llog_list_lock);
2227 spin_unlock(&filter->fo_llog_list_lock);
2231 RETURN(ERR_PTR(-ENOMEM));
2233 llog_group_init(olg, group);
2234 spin_lock(&filter->fo_llog_list_lock);
2235 list_for_each_entry(nolg, &filter->fo_llog_list, olg_list) {
2236 LASSERT(nolg->olg_group != group);
2238 list_add(&olg->olg_list, &filter->fo_llog_list);
2239 spin_unlock(&filter->fo_llog_list_lock);
2241 rc = llog_cat_initialize(obd, olg, 1, NULL);
2243 spin_lock(&filter->fo_llog_list_lock);
2244 list_del(&olg->olg_list);
2245 spin_unlock(&filter->fo_llog_list_lock);
2247 RETURN(ERR_PTR(rc));
2249 CDEBUG(D_OTHER, "%s: new llog group %u (0x%p)\n",
2250 obd->obd_name, group, olg);
2255 static int filter_llog_connect(struct obd_export *exp,
2256 struct llogd_conn_body *body)
2258 struct obd_device *obd = exp->exp_obd;
2259 struct llog_ctxt *ctxt;
2260 struct obd_llog_group *olg;
2264 CDEBUG(D_OTHER, "handle connect for %s: %u/%u/%u\n", obd->obd_name,
2265 (unsigned) body->lgdc_logid.lgl_ogr,
2266 (unsigned) body->lgdc_logid.lgl_oid,
2267 (unsigned) body->lgdc_logid.lgl_ogen);
2269 olg = filter_find_olg(obd, body->lgdc_logid.lgl_ogr);
2271 RETURN(PTR_ERR(olg));
2272 llog_group_set_export(olg, exp);
2274 ctxt = llog_group_get_ctxt(olg, body->lgdc_ctxt_idx);
2275 LASSERTF(ctxt != NULL, "ctxt is not null, ctxt idx %d \n",
2276 body->lgdc_ctxt_idx);
2277 rc = llog_connect(ctxt, 1, &body->lgdc_logid,
2278 &body->lgdc_gen, NULL);
2279 llog_ctxt_put(ctxt);
2281 CERROR("failed to connect rc %d idx %d\n", rc,
2282 body->lgdc_ctxt_idx);
2287 static int filter_llog_preclean (struct obd_device *obd)
2289 struct obd_llog_group *olg;
2290 struct filter_obd *filter;
2294 rc = obd_llog_finish(obd, 0);
2296 CERROR("failed to cleanup llogging subsystem\n");
2298 filter = &obd->u.filter;
2299 spin_lock(&filter->fo_llog_list_lock);
2300 while (!list_empty(&filter->fo_llog_list)) {
2301 olg = list_entry(filter->fo_llog_list.next,
2302 struct obd_llog_group, olg_list);
2303 list_del(&olg->olg_list);
2304 spin_unlock(&filter->fo_llog_list_lock);
2306 rc = filter_group_llog_finish(olg);
2308 CERROR("failed to cleanup llogging subsystem for %u\n",
2311 spin_lock(&filter->fo_llog_list_lock);
2313 spin_unlock(&filter->fo_llog_list_lock);
2318 static int filter_precleanup(struct obd_device *obd,
2319 enum obd_cleanup_stage stage)
2325 case OBD_CLEANUP_EARLY:
2327 case OBD_CLEANUP_EXPORTS:
2328 target_cleanup_recovery(obd);
2329 rc = filter_llog_preclean(obd);
2331 case OBD_CLEANUP_SELF_EXP:
2333 case OBD_CLEANUP_OBD:
2339 static int filter_cleanup(struct obd_device *obd)
2341 struct filter_obd *filter = &obd->u.filter;
2345 LCONSOLE_WARN("%s: shutting down for failover; client state "
2346 "will be preserved.\n", obd->obd_name);
2348 if (!list_empty(&obd->obd_exports)) {
2349 CERROR("%s: still has clients!\n", obd->obd_name);
2350 class_disconnect_exports(obd);
2351 if (!list_empty(&obd->obd_exports)) {
2352 CERROR("still has exports after forced cleanup?\n");
2357 lprocfs_obd_cleanup(obd);
2358 lprocfs_free_obd_stats(obd);
2359 lquota_cleanup(filter_quota_interface_ref, obd);
2361 /* Stop recovery before namespace cleanup. */
2362 target_stop_recovery_thread(obd);
2363 target_cleanup_recovery(obd);
2365 ldlm_namespace_free(obd->obd_namespace, obd->obd_force);
2367 sptlrpc_rule_set_free(&filter->fo_sptlrpc_rset);
2369 if (obd->u.obt.obt_sb == NULL)
2374 shrink_dcache_parent(obd->u.obt.obt_sb->s_root);
2376 LL_DQUOT_OFF(obd->u.obt.obt_sb);
2378 server_put_mount(obd->obd_name, filter->fo_vfsmnt);
2379 obd->u.obt.obt_sb = NULL;
2381 fsfilt_put_ops(obd->obd_fsops);
2383 filter_iobuf_pool_done(filter);
2385 LCONSOLE_INFO("OST %s has stopped.\n", obd->obd_name);
2390 static int filter_connect_internal(struct obd_export *exp,
2391 struct obd_connect_data *data)
2396 CDEBUG(D_RPCTRACE, "%s: cli %s/%p ocd_connect_flags: "LPX64
2397 " ocd_version: %x ocd_grant: %d ocd_index: %u\n",
2398 exp->exp_obd->obd_name, exp->exp_client_uuid.uuid, exp,
2399 data->ocd_connect_flags, data->ocd_version,
2400 data->ocd_grant, data->ocd_index);
2402 data->ocd_connect_flags &= OST_CONNECT_SUPPORTED;
2403 exp->exp_connect_flags = data->ocd_connect_flags;
2404 data->ocd_version = LUSTRE_VERSION_CODE;
2406 if ((exp->exp_connect_flags & OBD_CONNECT_FID) == 0) {
2407 CWARN("%s: OST requires FID support (flag="LPX64
2408 "), but client not\n",
2409 exp->exp_obd->obd_name,
2410 exp->exp_connect_flags);
2414 if (exp->exp_connect_flags & OBD_CONNECT_GRANT) {
2415 struct filter_export_data *fed = &exp->exp_filter_data;
2416 obd_size left, want;
2418 spin_lock(&exp->exp_obd->obd_osfs_lock);
2419 left = filter_grant_space_left(exp);
2420 want = data->ocd_grant;
2421 filter_grant(exp, fed->fed_grant, want, left);
2422 data->ocd_grant = fed->fed_grant;
2423 spin_unlock(&exp->exp_obd->obd_osfs_lock);
2425 CDEBUG(D_CACHE, "%s: cli %s/%p ocd_grant: %d want: "
2426 LPU64" left: "LPU64"\n", exp->exp_obd->obd_name,
2427 exp->exp_client_uuid.uuid, exp,
2428 data->ocd_grant, want, left);
2431 if (data->ocd_connect_flags & OBD_CONNECT_INDEX) {
2432 struct filter_obd *filter = &exp->exp_obd->u.filter;
2433 struct lr_server_data *lsd = filter->fo_fsd;
2434 int index = le32_to_cpu(lsd->lsd_ost_index);
2436 if (!(lsd->lsd_feature_compat &
2437 cpu_to_le32(OBD_COMPAT_OST))) {
2438 /* this will only happen on the first connect */
2439 lsd->lsd_ost_index = cpu_to_le32(data->ocd_index);
2440 lsd->lsd_feature_compat |= cpu_to_le32(OBD_COMPAT_OST);
2441 filter_update_server_data(exp->exp_obd,
2442 filter->fo_rcvd_filp, lsd, 1);
2443 } else if (index != data->ocd_index) {
2444 LCONSOLE_ERROR_MSG(0x136, "Connection from %s to index"
2445 " %u doesn't match actual OST index"
2446 " %u in last_rcvd file, bad "
2448 obd_export_nid2str(exp), index,
2454 if (OBD_FAIL_CHECK(OBD_FAIL_OST_BRW_SIZE)) {
2455 data->ocd_brw_size = 65536;
2456 } else if (data->ocd_connect_flags & OBD_CONNECT_BRW_SIZE) {
2457 data->ocd_brw_size = min(data->ocd_brw_size,
2458 (__u32)(PTLRPC_MAX_BRW_PAGES << CFS_PAGE_SHIFT));
2459 LASSERT(data->ocd_brw_size);
2462 if (data->ocd_connect_flags & OBD_CONNECT_CKSUM) {
2463 __u32 cksum_types = data->ocd_cksum_types;
2465 /* The client set in ocd_cksum_types the checksum types it
2466 * supports. We have to mask off the algorithms that we don't
2468 if (cksum_types & OBD_CKSUM_ALL)
2469 data->ocd_cksum_types &= OBD_CKSUM_ALL;
2471 data->ocd_cksum_types = OBD_CKSUM_CRC32;
2473 CDEBUG(D_RPCTRACE, "%s: cli %s supports cksum type %x, return "
2474 "%x\n", exp->exp_obd->obd_name,
2475 obd_export_nid2str(exp), cksum_types,
2476 data->ocd_cksum_types);
2478 /* This client does not support OBD_CONNECT_CKSUM
2479 * fall back to CRC32 */
2480 CDEBUG(D_RPCTRACE, "%s: cli %s does not support "
2481 "OBD_CONNECT_CKSUM, CRC32 will be used\n",
2482 exp->exp_obd->obd_name,
2483 obd_export_nid2str(exp));
2486 /* FIXME: Do the same with the MDS UUID and fsd_peeruuid.
2487 * FIXME: We don't strictly need the COMPAT flag for that,
2488 * FIXME: as fsd_peeruuid[0] will tell us if that is set.
2489 * FIXME: We needed it for the index, as index 0 is valid. */
2494 static int filter_reconnect(const struct lu_env *env,
2495 struct obd_export *exp, struct obd_device *obd,
2496 struct obd_uuid *cluuid,
2497 struct obd_connect_data *data)
2502 if (exp == NULL || obd == NULL || cluuid == NULL)
2505 rc = filter_connect_internal(exp, data);
2510 /* nearly identical to mds_connect */
2511 static int filter_connect(const struct lu_env *env,
2512 struct lustre_handle *conn, struct obd_device *obd,
2513 struct obd_uuid *cluuid,
2514 struct obd_connect_data *data)
2516 struct lvfs_run_ctxt saved;
2517 struct obd_export *exp;
2518 struct filter_export_data *fed;
2519 struct filter_client_data *fcd = NULL;
2524 if (conn == NULL || obd == NULL || cluuid == NULL)
2527 rc = class_connect(conn, obd, cluuid);
2530 exp = class_conn2export(conn);
2531 LASSERT(exp != NULL);
2533 fed = &exp->exp_filter_data;
2535 rc = filter_connect_internal(exp, data);
2539 filter_export_stats_init(obd, exp);
2540 group = data->ocd_group;
2541 if (obd->obd_replayable) {
2542 OBD_ALLOC(fcd, sizeof(*fcd));
2544 CERROR("filter: out of memory for client data\n");
2545 GOTO(cleanup, rc = -ENOMEM);
2548 memcpy(fcd->fcd_uuid, cluuid, sizeof(fcd->fcd_uuid));
2550 fed->fed_fcd->fcd_group = group;
2551 rc = filter_client_add(obd, exp, -1);
2555 CWARN("%s: Received MDS connection ("LPX64"); group %d\n",
2556 obd->obd_name, exp->exp_handle.h_cookie, group);
2560 if (fed->fed_group != 0 && fed->fed_group != group) {
2561 CERROR("!!! This export (nid %s) used object group %d "
2562 "earlier; now it's trying to use group %d! This could "
2563 "be a bug in the MDS. Tell CFS.\n",
2564 obd_export_nid2str(exp), fed->fed_group, group);
2565 GOTO(cleanup, rc = -EPROTO);
2567 fed->fed_group = group;
2569 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
2570 rc = filter_read_groups(obd, group, 1);
2571 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
2573 CERROR("can't read group %u\n", group);
2582 OBD_FREE(fcd, sizeof(*fcd));
2583 fed->fed_fcd = NULL;
2585 class_disconnect(exp);
2587 class_export_put(exp);
2593 /* Do extra sanity checks for grant accounting. We do this at connect,
2594 * disconnect, and statfs RPC time, so it shouldn't be too bad. We can
2595 * always get rid of it or turn it off when we know accounting is good. */
2596 static void filter_grant_sanity_check(struct obd_device *obd, const char *func)
2598 struct filter_export_data *fed;
2599 struct obd_export *exp;
2600 obd_size maxsize = obd->obd_osfs.os_blocks * obd->obd_osfs.os_bsize;
2601 obd_size tot_dirty = 0, tot_pending = 0, tot_granted = 0;
2602 obd_size fo_tot_dirty, fo_tot_pending, fo_tot_granted;
2604 if (list_empty(&obd->obd_exports))
2607 /* We don't want to do this for large machines that do lots of
2608 mounts or unmounts. It burns... */
2609 if (obd->obd_num_exports > 100)
2612 spin_lock(&obd->obd_osfs_lock);
2613 spin_lock(&obd->obd_dev_lock);
2614 list_for_each_entry(exp, &obd->obd_exports, exp_obd_chain) {
2616 fed = &exp->exp_filter_data;
2617 if (fed->fed_grant < 0 || fed->fed_pending < 0 ||
2620 if (maxsize > 0) { /* we may not have done a statfs yet */
2621 LASSERTF(fed->fed_grant + fed->fed_pending <= maxsize,
2622 "%s: cli %s/%p %ld+%ld > "LPU64"\n", func,
2623 exp->exp_client_uuid.uuid, exp,
2624 fed->fed_grant, fed->fed_pending, maxsize);
2625 LASSERTF(fed->fed_dirty <= maxsize,
2626 "%s: cli %s/%p %ld > "LPU64"\n", func,
2627 exp->exp_client_uuid.uuid, exp,
2628 fed->fed_dirty, maxsize);
2631 CERROR("%s: cli %s/%p dirty %ld pend %ld grant %ld\n",
2632 obd->obd_name, exp->exp_client_uuid.uuid, exp,
2633 fed->fed_dirty, fed->fed_pending,fed->fed_grant);
2635 CDEBUG(D_CACHE, "%s: cli %s/%p dirty %ld pend %ld grant %ld\n",
2636 obd->obd_name, exp->exp_client_uuid.uuid, exp,
2637 fed->fed_dirty, fed->fed_pending,fed->fed_grant);
2638 tot_granted += fed->fed_grant + fed->fed_pending;
2639 tot_pending += fed->fed_pending;
2640 tot_dirty += fed->fed_dirty;
2642 fo_tot_granted = obd->u.filter.fo_tot_granted;
2643 fo_tot_pending = obd->u.filter.fo_tot_pending;
2644 fo_tot_dirty = obd->u.filter.fo_tot_dirty;
2645 spin_unlock(&obd->obd_dev_lock);
2646 spin_unlock(&obd->obd_osfs_lock);
2648 /* Do these assertions outside the spinlocks so we don't kill system */
2649 if (tot_granted != fo_tot_granted)
2650 CERROR("%s: tot_granted "LPU64" != fo_tot_granted "LPU64"\n",
2651 func, tot_granted, fo_tot_granted);
2652 if (tot_pending != fo_tot_pending)
2653 CERROR("%s: tot_pending "LPU64" != fo_tot_pending "LPU64"\n",
2654 func, tot_pending, fo_tot_pending);
2655 if (tot_dirty != fo_tot_dirty)
2656 CERROR("%s: tot_dirty "LPU64" != fo_tot_dirty "LPU64"\n",
2657 func, tot_dirty, fo_tot_dirty);
2658 if (tot_pending > tot_granted)
2659 CERROR("%s: tot_pending "LPU64" > tot_granted "LPU64"\n",
2660 func, tot_pending, tot_granted);
2661 if (tot_granted > maxsize)
2662 CERROR("%s: tot_granted "LPU64" > maxsize "LPU64"\n",
2663 func, tot_granted, maxsize);
2664 if (tot_dirty > maxsize)
2665 CERROR("%s: tot_dirty "LPU64" > maxsize "LPU64"\n",
2666 func, tot_dirty, maxsize);
2669 /* Remove this client from the grant accounting totals. We also remove
2670 * the export from the obd device under the osfs and dev locks to ensure
2671 * that the filter_grant_sanity_check() calculations are always valid.
2672 * The client should do something similar when it invalidates its import. */
2673 static void filter_grant_discard(struct obd_export *exp)
2675 struct obd_device *obd = exp->exp_obd;
2676 struct filter_obd *filter = &obd->u.filter;
2677 struct filter_export_data *fed = &exp->exp_filter_data;
2679 spin_lock(&obd->obd_osfs_lock);
2680 spin_lock(&obd->obd_dev_lock);
2681 list_del_init(&exp->exp_obd_chain);
2682 spin_unlock(&obd->obd_dev_lock);
2684 LASSERTF(filter->fo_tot_granted >= fed->fed_grant,
2685 "%s: tot_granted "LPU64" cli %s/%p fed_grant %ld\n",
2686 obd->obd_name, filter->fo_tot_granted,
2687 exp->exp_client_uuid.uuid, exp, fed->fed_grant);
2688 filter->fo_tot_granted -= fed->fed_grant;
2689 LASSERTF(filter->fo_tot_pending >= fed->fed_pending,
2690 "%s: tot_pending "LPU64" cli %s/%p fed_pending %ld\n",
2691 obd->obd_name, filter->fo_tot_pending,
2692 exp->exp_client_uuid.uuid, exp, fed->fed_pending);
2693 /* fo_tot_pending is handled in filter_grant_commit as bulk finishes */
2694 LASSERTF(filter->fo_tot_dirty >= fed->fed_dirty,
2695 "%s: tot_dirty "LPU64" cli %s/%p fed_dirty %ld\n",
2696 obd->obd_name, filter->fo_tot_dirty,
2697 exp->exp_client_uuid.uuid, exp, fed->fed_dirty);
2698 filter->fo_tot_dirty -= fed->fed_dirty;
2702 spin_unlock(&obd->obd_osfs_lock);
2705 static int filter_destroy_export(struct obd_export *exp)
2709 if (exp->exp_filter_data.fed_pending)
2710 CERROR("%s: cli %s/%p has %lu pending on destroyed export\n",
2711 exp->exp_obd->obd_name, exp->exp_client_uuid.uuid,
2712 exp, exp->exp_filter_data.fed_pending);
2714 /* Not ported yet the b1_6 quota functionality
2715 * lquota_clearinfo(filter_quota_interface_ref, exp, exp->exp_obd);
2718 target_destroy_export(exp);
2720 if (obd_uuid_equals(&exp->exp_client_uuid, &exp->exp_obd->obd_uuid))
2723 lprocfs_exp_cleanup(exp);
2725 if (exp->exp_obd->obd_replayable)
2726 filter_client_free(exp);
2728 fsfilt_sync(exp->exp_obd, exp->exp_obd->u.obt.obt_sb);
2730 filter_grant_discard(exp);
2731 filter_fmd_cleanup(exp);
2733 if (!(exp->exp_flags & OBD_OPT_FORCE))
2734 filter_grant_sanity_check(exp->exp_obd, __FUNCTION__);
2739 static void filter_sync_llogs(struct obd_device *obd, struct obd_export *dexp)
2741 struct obd_llog_group *olg_min, *olg;
2742 struct filter_obd *filter;
2743 int worked = 0, group;
2744 struct llog_ctxt *ctxt;
2747 filter = &obd->u.filter;
2749 /* we can't sync log holding spinlock. also, we do not want to get
2750 * into livelock. so we do following: loop over MDS's exports in
2751 * group order and skip already synced llogs -bzzz */
2753 /* look for group with min. number, but > worked */
2756 spin_lock(&filter->fo_llog_list_lock);
2757 list_for_each_entry(olg, &filter->fo_llog_list, olg_list) {
2758 if (olg->olg_group <= worked) {
2759 /* this group is already synced */
2762 if (group < olg->olg_group) {
2763 /* we have group with smaller number to sync */
2766 /* store current minimal group */
2768 group = olg->olg_group;
2770 spin_unlock(&filter->fo_llog_list_lock);
2772 if (olg_min == NULL)
2775 worked = olg_min->olg_group;
2776 if (olg_min->olg_exp &&
2777 (dexp == olg_min->olg_exp || dexp == NULL)) {
2779 ctxt = llog_group_get_ctxt(olg_min,
2780 LLOG_MDS_OST_REPL_CTXT);
2781 LASSERT(ctxt != NULL);
2782 err = llog_sync(ctxt, olg_min->olg_exp);
2783 llog_ctxt_put(ctxt);
2785 CERROR("error flushing logs to MDS: rc %d\n",
2788 } while (olg_min != NULL);
2791 /* also incredibly similar to mds_disconnect */
2792 static int filter_disconnect(struct obd_export *exp)
2794 struct obd_device *obd = exp->exp_obd;
2799 class_export_get(exp);
2801 if (!(exp->exp_flags & OBD_OPT_FORCE))
2802 filter_grant_sanity_check(obd, __FUNCTION__);
2803 filter_grant_discard(exp);
2805 /* Disconnect early so that clients can't keep using export */
2806 rc = class_disconnect(exp);
2807 if (exp->exp_obd->obd_namespace != NULL)
2808 ldlm_cancel_locks_for_export(exp);
2810 fsfilt_sync(obd, obd->u.obt.obt_sb);
2812 /* flush any remaining cancel messages out to the target */
2813 filter_sync_llogs(obd, exp);
2814 class_export_put(exp);
2818 /* reverse import is changed, sync all cancels */
2819 static void filter_revimp_update(struct obd_export *exp)
2824 class_export_get(exp);
2826 /* flush any remaining cancel messages out to the target */
2827 filter_sync_llogs(exp->exp_obd, exp);
2828 class_export_put(exp);
2832 static int filter_ping(struct obd_export *exp)
2834 filter_fmd_expire(exp);
2839 struct dentry *__filter_oa2dentry(struct obd_device *obd, struct obdo *oa,
2840 const char *what, int quiet)
2842 struct dentry *dchild = NULL;
2845 if (oa->o_valid & OBD_MD_FLGROUP)
2848 dchild = filter_fid2dentry(obd, NULL, group, oa->o_id);
2850 if (IS_ERR(dchild)) {
2851 CERROR("%s error looking up object: "LPU64":"LPU64"\n",
2852 what, group, oa->o_id);
2856 if (dchild->d_inode == NULL) {
2858 CERROR("%s: %s on non-existent object: "LPU64"\n",
2859 obd->obd_name, what, oa->o_id);
2861 RETURN(ERR_PTR(-ENOENT));
2867 static int filter_getattr(struct obd_export *exp, struct obd_info *oinfo)
2869 struct dentry *dentry = NULL;
2870 struct obd_device *obd;
2874 rc = filter_auth_capa(exp, NULL, oinfo_mdsno(oinfo),
2875 oinfo_capa(oinfo), CAPA_OPC_META_READ);
2879 obd = class_exp2obd(exp);
2881 CDEBUG(D_IOCTL, "invalid client export %p\n", exp);
2885 dentry = filter_oa2dentry(obd, oinfo->oi_oa);
2887 RETURN(PTR_ERR(dentry));
2889 /* Limit the valid bits in the return data to what we actually use */
2890 oinfo->oi_oa->o_valid = OBD_MD_FLID;
2891 obdo_from_inode(oinfo->oi_oa, dentry->d_inode, FILTER_VALID_FLAGS);
2897 /* this should be enabled/disabled in condition to enabled/disabled large
2898 * inodes (fast EAs) in backing store FS. */
2899 int filter_update_fidea(struct obd_export *exp, struct inode *inode,
2900 void *handle, struct obdo *oa)
2902 struct obd_device *obd = exp->exp_obd;
2906 if (oa->o_valid & OBD_MD_FLFID) {
2907 struct filter_fid ff;
2909 if (!(oa->o_valid & OBD_MD_FLGROUP))
2911 /* packing fid and converting it to LE for storing into EA.
2912 * Here ->o_stripe_idx should be filled by LOV and rest of
2913 * fields - by client. */
2914 ff.ff_fid.id = cpu_to_le64(oa->o_fid);
2915 ff.ff_fid.f_type = cpu_to_le32(oa->o_stripe_idx);
2916 ff.ff_fid.generation = cpu_to_le32(oa->o_generation);
2917 ff.ff_objid = cpu_to_le64(oa->o_id);
2918 ff.ff_group = cpu_to_le64(oa->o_gr);
2920 CDEBUG(D_INODE, "storing filter fid EA ("LPU64"/%u/%u"
2921 LPU64"/"LPU64")\n", oa->o_fid, oa->o_stripe_idx,
2922 oa->o_generation, oa->o_id, oa->o_gr);
2924 rc = fsfilt_set_md(obd, inode, handle, &ff, sizeof(ff), "fid");
2926 CERROR("store fid in object failed! rc: %d\n", rc);
2928 CDEBUG(D_HA, "OSS object without fid info!\n");
2934 /* this is called from filter_truncate() until we have filter_punch() */
2935 int filter_setattr_internal(struct obd_export *exp, struct dentry *dentry,
2936 struct obdo *oa, struct obd_trans_info *oti)
2938 unsigned int orig_ids[MAXQUOTAS] = {0, 0};
2939 struct llog_cookie *fcc = NULL;
2940 struct filter_obd *filter;
2941 int rc, err, locked = 0, sync = 0;
2942 unsigned int ia_valid;
2943 struct inode *inode;
2948 LASSERT(dentry != NULL);
2949 LASSERT(!IS_ERR(dentry));
2951 inode = dentry->d_inode;
2952 LASSERT(inode != NULL);
2954 filter = &exp->exp_obd->u.filter;
2955 iattr_from_obdo(&iattr, oa, oa->o_valid);
2956 ia_valid = iattr.ia_valid;
2958 if (oa->o_valid & OBD_MD_FLCOOKIE) {
2959 OBD_ALLOC(fcc, sizeof(*fcc));
2961 memcpy(fcc, obdo_logcookie(oa), sizeof(*fcc));
2964 if (ia_valid & ATTR_SIZE || ia_valid & (ATTR_UID | ATTR_GID)) {
2966 LOCK_INODE_MUTEX(inode);
2970 /* If the inode still has SUID+SGID bits set (see filter_precreate())
2971 * then we will accept the UID+GID sent by the client during write for
2972 * initializing the ownership of this inode. We only allow this to
2973 * happen once so clear these bits in setattr. In 2.6 kernels it is
2974 * possible to get ATTR_UID and ATTR_GID separately, so we only clear
2975 * the flags that are actually being set. */
2976 if (ia_valid & (ATTR_UID | ATTR_GID)) {
2977 CDEBUG(D_INODE, "update UID/GID to %lu/%lu\n",
2978 (unsigned long)oa->o_uid, (unsigned long)oa->o_gid);
2980 if ((inode->i_mode & S_ISUID) && (ia_valid & ATTR_UID)) {
2981 if (!(ia_valid & ATTR_MODE)) {
2982 iattr.ia_mode = inode->i_mode;
2983 iattr.ia_valid |= ATTR_MODE;
2985 iattr.ia_mode &= ~S_ISUID;
2987 if ((inode->i_mode & S_ISGID) && (ia_valid & ATTR_GID)) {
2988 if (!(iattr.ia_valid & ATTR_MODE)) {
2989 iattr.ia_mode = inode->i_mode;
2990 iattr.ia_valid |= ATTR_MODE;
2992 iattr.ia_mode &= ~S_ISGID;
2995 orig_ids[USRQUOTA] = inode->i_uid;
2996 orig_ids[GRPQUOTA] = inode->i_gid;
2997 handle = fsfilt_start_log(exp->exp_obd, inode,
2998 FSFILT_OP_SETATTR, oti, 1);
3000 GOTO(out_unlock, rc = PTR_ERR(handle));
3002 /* update inode EA only once when inode is suid bit marked. As
3003 * on 2.6.x UID and GID may be set separately, we check here
3004 * only one of them to avoid double setting. */
3005 if (inode->i_mode & S_ISUID)
3006 filter_update_fidea(exp, inode, handle, oa);
3008 handle = fsfilt_start(exp->exp_obd, inode,
3009 FSFILT_OP_SETATTR, oti);
3011 GOTO(out_unlock, rc = PTR_ERR(handle));
3013 if (oa->o_valid & OBD_MD_FLFLAGS) {
3014 rc = fsfilt_iocontrol(exp->exp_obd, inode, NULL,
3015 EXT3_IOC_SETFLAGS, (long)&oa->o_flags);
3017 rc = fsfilt_setattr(exp->exp_obd, dentry, handle, &iattr, 1);
3019 /* set cancel cookie callback function */
3020 sync = fsfilt_add_journal_cb(exp->exp_obd, 0, handle,
3021 filter_cancel_cookies_cb,
3025 if (OBD_FAIL_CHECK(OBD_FAIL_OST_SETATTR_CREDITS))
3026 fsfilt_extend(exp->exp_obd, inode, 0, handle);
3028 /* The truncate might have used up our transaction credits. Make
3029 * sure we have one left for the last_rcvd update. */
3030 err = fsfilt_extend(exp->exp_obd, inode, 1, handle);
3032 rc = filter_finish_transno(exp, oti, rc, sync);
3034 filter_cancel_cookies_cb(exp->exp_obd, 0, fcc, rc);
3038 err = fsfilt_commit(exp->exp_obd, inode, handle, 0);
3040 CERROR("error on commit, err = %d\n", err);
3048 /* Let's flush truncated page on disk immediately, then we can
3049 * avoid need to search for page aliases before directio writes
3050 * and this sort of stuff at expense of somewhat slower
3051 * truncates not on a page boundary. I believe this is the only
3052 * place in filter code that can lead to pages getting to
3053 * pagecache so far. */
3054 filter_clear_truncated_page(inode);
3055 UNLOCK_INODE_MUTEX(inode);
3062 UNLOCK_INODE_MUTEX(inode);
3065 OBD_FREE(fcc, sizeof(*fcc));
3067 /* trigger quota release */
3068 if (ia_valid & (ATTR_SIZE | ATTR_UID | ATTR_GID)) {
3069 unsigned int cur_ids[MAXQUOTAS] = {oa->o_uid, oa->o_gid};
3070 int rc2 = lquota_adjust(filter_quota_interface_ref,
3071 exp->exp_obd, cur_ids,
3072 orig_ids, rc, FSFILT_OP_SETATTR);
3073 CDEBUG(rc2 ? D_ERROR : D_QUOTA,
3074 "filter adjust qunit. (rc:%d)\n", rc2);
3079 /* this is called from filter_truncate() until we have filter_punch() */
3080 int filter_setattr(struct obd_export *exp, struct obd_info *oinfo,
3081 struct obd_trans_info *oti)
3083 struct ldlm_res_id res_id = { .name = { oinfo->oi_oa->o_id, 0,
3084 oinfo->oi_oa->o_gr, 0 } };
3085 struct filter_mod_data *fmd;
3086 struct lvfs_run_ctxt saved;
3087 struct filter_obd *filter;
3088 struct ldlm_resource *res;
3089 struct dentry *dentry;
3093 rc = filter_auth_capa(exp, NULL, oinfo_mdsno(oinfo),
3094 oinfo_capa(oinfo), CAPA_OPC_META_WRITE);
3098 dentry = __filter_oa2dentry(exp->exp_obd, oinfo->oi_oa,
3101 RETURN(PTR_ERR(dentry));
3103 filter = &exp->exp_obd->u.filter;
3104 push_ctxt(&saved, &exp->exp_obd->obd_lvfs_ctxt, NULL);
3107 if (oinfo->oi_oa->o_valid &
3108 (OBD_MD_FLMTIME | OBD_MD_FLATIME | OBD_MD_FLCTIME)) {
3109 fmd = filter_fmd_get(exp,oinfo->oi_oa->o_id,oinfo->oi_oa->o_gr);
3110 if (fmd && fmd->fmd_mactime_xid < oti->oti_xid)
3111 fmd->fmd_mactime_xid = oti->oti_xid;
3112 filter_fmd_put(exp, fmd);
3115 /* setting objects attributes (including owner/group) */
3116 rc = filter_setattr_internal(exp, dentry, oinfo->oi_oa, oti);
3118 GOTO(out_unlock, rc);
3120 res = ldlm_resource_get(exp->exp_obd->obd_namespace, NULL,
3121 &res_id, LDLM_EXTENT, 0);
3124 rc = ldlm_res_lvbo_update(res, NULL, 0, 0);
3125 ldlm_resource_putref(res);
3128 oinfo->oi_oa->o_valid = OBD_MD_FLID;
3130 /* Quota release need uid/gid info */
3131 obdo_from_inode(oinfo->oi_oa, dentry->d_inode,
3132 FILTER_VALID_FLAGS | OBD_MD_FLUID | OBD_MD_FLGID);
3138 pop_ctxt(&saved, &exp->exp_obd->obd_lvfs_ctxt, NULL);
3142 /* XXX identical to osc_unpackmd */
3143 static int filter_unpackmd(struct obd_export *exp, struct lov_stripe_md **lsmp,
3144 struct lov_mds_md *lmm, int lmm_bytes)
3150 if (lmm_bytes < sizeof (*lmm)) {
3151 CERROR("lov_mds_md too small: %d, need %d\n",
3152 lmm_bytes, (int)sizeof(*lmm));
3155 /* XXX LOV_MAGIC etc check? */
3157 if (lmm->lmm_object_id == cpu_to_le64(0)) {
3158 CERROR("lov_mds_md: zero lmm_object_id\n");
3163 lsm_size = lov_stripe_md_size(1);
3167 if (*lsmp != NULL && lmm == NULL) {
3168 OBD_FREE((*lsmp)->lsm_oinfo[0], sizeof(struct lov_oinfo));
3169 OBD_FREE(*lsmp, lsm_size);
3174 if (*lsmp == NULL) {
3175 OBD_ALLOC(*lsmp, lsm_size);
3179 OBD_ALLOC((*lsmp)->lsm_oinfo[0], sizeof(struct lov_oinfo));
3180 if ((*lsmp)->lsm_oinfo[0] == NULL) {
3181 OBD_FREE(*lsmp, lsm_size);
3184 loi_init((*lsmp)->lsm_oinfo[0]);
3188 /* XXX zero *lsmp? */
3189 (*lsmp)->lsm_object_id = le64_to_cpu (lmm->lmm_object_id);
3190 LASSERT((*lsmp)->lsm_object_id);
3193 (*lsmp)->lsm_maxbytes = LUSTRE_STRIPE_MAXBYTES;
3198 /* caller must hold fo_create_locks[oa->o_gr] */
3199 static int filter_destroy_precreated(struct obd_export *exp, struct obdo *oa,
3200 struct filter_obd *filter)
3202 struct obdo doa; /* XXX obdo on stack */
3208 LASSERT(oa->o_gr != 0);
3209 LASSERT(oa->o_valid & OBD_MD_FLGROUP);
3210 LASSERT(down_trylock(&filter->fo_create_locks[oa->o_gr]) != 0);
3212 memset(&doa, 0, sizeof(doa));
3214 doa.o_valid |= OBD_MD_FLGROUP;
3215 doa.o_gr = oa->o_gr;
3216 doa.o_mode = S_IFREG;
3218 if (!test_bit(doa.o_gr, &filter->fo_destroys_in_progress)) {
3219 CERROR("%s:["LPU64"] destroys_in_progress already cleared\n",
3220 exp->exp_obd->obd_name, doa.o_gr);
3224 last = filter_last_id(filter, doa.o_gr);
3226 CWARN("%s: deleting orphan objects from "LPU64" to "LPU64"\n",
3227 exp->exp_obd->obd_name, oa->o_id + 1, last);
3229 for (id = last; id > oa->o_id; id--) {
3231 rc = filter_destroy(exp, &doa, NULL, NULL, NULL);
3232 if (rc && rc != -ENOENT) /* this is pretty fatal... */
3233 CEMERG("error destroying precreate objid "LPU64": %d\n",
3235 filter_set_last_id(filter, id - 1, doa.o_gr);
3236 /* update last_id on disk periodically so that if we restart
3237 * we don't need to re-scan all of the just-deleted objects. */
3238 if ((id & 511) == 0)
3239 filter_update_last_objid(exp->exp_obd, doa.o_gr, 0);
3242 CDEBUG(D_HA, "%s: after destroy: set last_objids["LPU64"] = "LPU64"\n",
3243 exp->exp_obd->obd_name, doa.o_gr, oa->o_id);
3245 rc = filter_update_last_objid(exp->exp_obd, doa.o_gr, 1);
3246 clear_bit(doa.o_gr, &filter->fo_destroys_in_progress);
3251 static int filter_precreate(struct obd_device *obd, struct obdo *oa,
3252 obd_gr group, int *num);
3253 /* returns a negative error or a nonnegative number of files to create */
3254 static int filter_handle_precreate(struct obd_export *exp, struct obdo *oa,
3255 obd_gr group, struct obd_trans_info *oti)
3257 struct obd_device *obd = exp->exp_obd;
3258 struct filter_obd *filter = &obd->u.filter;
3262 /* delete orphans request */
3263 if ((oa->o_valid & OBD_MD_FLFLAGS) && (oa->o_flags & OBD_FL_DELORPHAN)){
3264 if (oti->oti_conn_cnt < exp->exp_conn_cnt) {
3265 CERROR("%s: dropping old orphan cleanup request\n",
3269 /* This causes inflight precreates to abort and drop lock */
3270 set_bit(group, &filter->fo_destroys_in_progress);
3271 down(&filter->fo_create_locks[group]);
3272 if (!test_bit(group, &filter->fo_destroys_in_progress)) {
3273 CERROR("%s:["LPU64"] destroys_in_progress already cleared\n",
3274 exp->exp_obd->obd_name, group);
3275 up(&filter->fo_create_locks[group]);
3278 diff = oa->o_id - filter_last_id(filter, group);
3279 CDEBUG(D_HA, "filter_last_id() = "LPU64" -> diff = %d\n",
3280 filter_last_id(filter, group), diff);
3282 if (-diff > OST_MAX_PRECREATE) {
3283 CERROR("%s: ignoring bogus orphan destroy request: "
3284 "obdid "LPU64" last_id "LPU64"\n", obd->obd_name,
3285 oa->o_id, filter_last_id(filter, group));
3286 /* FIXME: should reset precreate_next_id on MDS */
3287 GOTO(out, rc = -EINVAL);
3290 rc = filter_destroy_precreated(exp, oa, filter);
3292 CERROR("%s: unable to write lastobjid, but "
3293 "orphans were deleted\n", obd->obd_name);
3296 /* XXX: Used by MDS for the first time! */
3297 clear_bit(group, &filter->fo_destroys_in_progress);
3300 down(&filter->fo_create_locks[group]);
3301 if (oti->oti_conn_cnt < exp->exp_conn_cnt) {
3302 CERROR("%s: dropping old precreate request\n",
3306 /* only precreate if group == 0 and o_id is specfied */
3307 if (group < FILTER_GROUP_MDS0 || oa->o_id == 0)
3310 diff = oa->o_id - filter_last_id(filter, group);
3311 CDEBUG(D_RPCTRACE, "filter_last_id() = "LPU64" -> diff = %d\n",
3312 filter_last_id(filter, group), diff);
3314 LASSERTF(diff >= 0,"%s: "LPU64" - "LPU64" = %d\n",obd->obd_name,
3315 oa->o_id, filter_last_id(filter, group), diff);
3319 oa->o_id = filter_last_id(&obd->u.filter, group);
3320 rc = filter_precreate(obd, oa, group, &diff);
3321 oa->o_id = filter_last_id(&obd->u.filter, group);
3323 oa->o_valid = OBD_MD_FLID | OBD_MD_FLGROUP;
3326 /* else diff == 0 */
3329 up(&filter->fo_create_locks[group]);
3333 static int filter_statfs(struct obd_device *obd, struct obd_statfs *osfs,
3334 __u64 max_age, __u32 flags)
3336 struct filter_obd *filter = &obd->u.filter;
3337 int blockbits = obd->u.obt.obt_sb->s_blocksize_bits;
3341 /* at least try to account for cached pages. its still racey and
3342 * might be under-reporting if clients haven't announced their
3343 * caches with brw recently */
3344 spin_lock(&obd->obd_osfs_lock);
3345 rc = fsfilt_statfs(obd, obd->u.obt.obt_sb, max_age);
3346 memcpy(osfs, &obd->obd_osfs, sizeof(*osfs));
3347 spin_unlock(&obd->obd_osfs_lock);
3349 CDEBUG(D_SUPER | D_CACHE, "blocks cached "LPU64" granted "LPU64
3350 " pending "LPU64" free "LPU64" avail "LPU64"\n",
3351 filter->fo_tot_dirty, filter->fo_tot_granted,
3352 filter->fo_tot_pending,
3353 osfs->os_bfree << blockbits, osfs->os_bavail << blockbits);
3355 filter_grant_sanity_check(obd, __FUNCTION__);
3357 osfs->os_bavail -= min(osfs->os_bavail, GRANT_FOR_LLOG(obd) +
3358 ((filter->fo_tot_dirty + filter->fo_tot_pending +
3359 osfs->os_bsize - 1) >> blockbits));
3361 /* set EROFS to state field if FS is mounted as RDONLY. The goal is to
3362 * stop creating files on MDS if OST is not good shape to create
3364 osfs->os_state = (filter->fo_obt.obt_sb->s_flags & MS_RDONLY) ?
3369 static int filter_use_existing_obj(struct obd_device *obd,
3370 struct dentry *dchild, void **handle,
3373 struct inode *inode = dchild->d_inode;
3377 if ((inode->i_mode & (S_ISUID | S_ISGID)) == (S_ISUID|S_ISGID))
3380 *handle = fsfilt_start_log(obd, inode, FSFILT_OP_SETATTR, NULL, 1);
3381 if (IS_ERR(*handle))
3382 return PTR_ERR(*handle);
3384 iattr.ia_valid = ATTR_MODE;
3385 iattr.ia_mode = S_ISUID | S_ISGID |0666;
3386 rc = fsfilt_setattr(obd, dchild, *handle, &iattr, 1);
3394 /* We rely on the fact that only one thread will be creating files in a given
3395 * group at a time, which is why we don't need an atomic filter_get_new_id.
3396 * Even if we had that atomic function, the following race would exist:
3398 * thread 1: gets id x from filter_next_id
3399 * thread 2: gets id (x + 1) from filter_next_id
3400 * thread 2: creates object (x + 1)
3401 * thread 1: tries to create object x, gets -ENOSPC
3403 * Caller must hold fo_create_locks[group]
3405 static int filter_precreate(struct obd_device *obd, struct obdo *oa,
3406 obd_gr group, int *num)
3408 struct dentry *dchild = NULL, *dparent = NULL;
3409 struct filter_obd *filter;
3410 struct obd_statfs *osfs;
3411 int err = 0, rc = 0, recreate_obj = 0, i;
3412 unsigned long enough_time = jiffies + min(obd_timeout * HZ / 4, 10U*HZ);
3414 void *handle = NULL;
3417 filter = &obd->u.filter;
3419 LASSERT(down_trylock(&filter->fo_create_locks[group]) != 0);
3421 OBD_FAIL_TIMEOUT(OBD_FAIL_TGT_DELAY_PRECREATE, obd_timeout / 2);
3423 if ((oa->o_valid & OBD_MD_FLFLAGS) &&
3424 (oa->o_flags & OBD_FL_RECREATE_OBJS)) {
3427 OBD_ALLOC(osfs, sizeof(*osfs));
3430 rc = filter_statfs(obd, osfs, cfs_time_current_64() - HZ, 0);
3431 if (rc == 0 && osfs->os_bavail < (osfs->os_blocks >> 10)) {
3432 CDEBUG(D_RPCTRACE,"%s: not enough space for create "
3433 LPU64"\n", obd->obd_name, osfs->os_bavail <<
3434 filter->fo_vfsmnt->mnt_sb->s_blocksize_bits);
3438 OBD_FREE(osfs, sizeof(*osfs));
3443 CDEBUG(D_RPCTRACE, "%s: precreating %d objects in group "LPU64
3444 " at "LPU64"\n", obd->obd_name, *num, group, oa->o_id);
3446 for (i = 0; i < *num && err == 0; i++) {
3447 int cleanup_phase = 0;
3449 if (test_bit(group, &filter->fo_destroys_in_progress)) {
3450 CWARN("%s: create aborted by destroy\n",
3459 last_id = filter_last_id(filter, group);
3460 if (next_id > last_id) {
3461 CERROR("Error: Trying to recreate obj greater"
3462 "than last id "LPD64" > "LPD64"\n",
3464 GOTO(cleanup, rc = -EINVAL);
3467 next_id = filter_last_id(filter, group) + 1;
3469 CDEBUG(D_INFO, "precreate objid "LPU64"\n", next_id);
3471 dparent = filter_parent_lock(obd, group, next_id);
3472 if (IS_ERR(dparent))
3473 GOTO(cleanup, rc = PTR_ERR(dparent));
3474 cleanup_phase = 1; /* filter_parent_unlock(dparent) */
3476 dchild = filter_fid2dentry(obd, dparent, group, next_id);
3478 GOTO(cleanup, rc = PTR_ERR(dchild));
3479 cleanup_phase = 2; /* f_dput(dchild) */
3481 if (dchild->d_inode != NULL) {
3482 /* This would only happen if lastobjid was bad on disk*/
3483 /* Could also happen if recreating missing obj but it
3484 * already exists. */
3486 CERROR("%s: recreating existing object %.*s?\n",
3487 obd->obd_name, dchild->d_name.len,
3488 dchild->d_name.name);
3490 /* Use these existing objects if they are
3492 if (dchild->d_inode->i_size == 0) {
3493 rc = filter_use_existing_obj(obd,dchild,
3494 &handle, &cleanup_phase);
3501 CERROR("%s: Serious error: objid %.*s already "
3502 "exists; is this filesystem corrupt?\n",
3503 obd->obd_name, dchild->d_name.len,
3504 dchild->d_name.name);
3507 GOTO(cleanup, rc = -EEXIST);
3510 handle = fsfilt_start_log(obd, dparent->d_inode,
3511 FSFILT_OP_CREATE, NULL, 1);
3513 GOTO(cleanup, rc = PTR_ERR(handle));
3516 /* We mark object SUID+SGID to flag it for accepting UID+GID
3517 * from client on first write. Currently the permission bits
3518 * on the OST are never used, so this is OK. */
3519 rc = ll_vfs_create(dparent->d_inode, dchild,
3520 S_IFREG | S_ISUID | S_ISGID | 0666, NULL);
3522 CERROR("create failed rc = %d\n", rc);
3527 if (!recreate_obj) {
3528 filter_set_last_id(filter, next_id, group);
3529 err = filter_update_last_objid(obd, group, 0);
3531 CERROR("unable to write lastobjid "
3532 "but file created\n");
3536 switch(cleanup_phase) {
3538 err = fsfilt_commit(obd, dparent->d_inode, handle, 0);
3540 CERROR("error on commit, err = %d\n", err);
3547 filter_parent_unlock(dparent);
3554 if (time_after(jiffies, enough_time)) {
3556 "%s: precreate slow - want %d got %d \n",
3557 obd->obd_name, *num, i);
3564 "%s: created %d objects for group "LPU64": "LPU64" rc %d\n",
3565 obd->obd_name, i, group, filter->fo_last_objids[group], rc);
3570 static int filter_create(struct obd_export *exp, struct obdo *oa,
3571 struct lov_stripe_md **ea, struct obd_trans_info *oti)
3573 struct filter_export_data *fed;
3574 struct obd_device *obd = NULL;
3575 struct filter_obd *filter;
3576 struct lvfs_run_ctxt saved;
3577 struct lov_stripe_md *lsm = NULL;
3578 int rc = 0, diff, group = oa->o_gr;
3581 if (!(oa->o_valid & OBD_MD_FLGROUP) || group == 0) {
3582 CERROR("!!! nid %s sent invalid object group %d\n",
3583 obd_export_nid2str(exp), group);
3588 fed = &exp->exp_filter_data;
3589 filter = &obd->u.filter;
3591 if (fed->fed_group != group) {
3592 CERROR("!!! this export (nid %s) used object group %d "
3593 "earlier; now it's trying to use group %d! This could "
3594 "be a bug in the MDS. Tell CFS.\n",
3595 obd_export_nid2str(exp), fed->fed_group, group);
3599 CDEBUG(D_INFO, "filter_create(od->o_gr="LPU64",od->o_id="LPU64")\n",
3600 oa->o_gr, oa->o_id);
3604 rc = obd_alloc_memmd(exp, &lsm);
3611 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
3613 if ((oa->o_valid & OBD_MD_FLFLAGS) &&
3614 (oa->o_flags & OBD_FL_RECREATE_OBJS)) {
3615 if (oa->o_id > filter_last_id(filter, oa->o_gr)) {
3616 CERROR("recreate objid "LPU64" > last id "LPU64"\n",
3617 oa->o_id, filter_last_id(filter,
3622 down(&filter->fo_create_locks[oa->o_gr]);
3623 rc = filter_precreate(obd, oa, oa->o_gr, &diff);
3624 up(&filter->fo_create_locks[oa->o_gr]);
3627 rc = filter_handle_precreate(exp, oa, oa->o_gr, oti);
3630 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
3631 if (rc && ea != NULL && *ea != lsm) {
3632 obd_free_memmd(exp, &lsm);
3633 } else if (rc == 0 && ea != NULL) {
3634 /* XXX LOV STACKING: the lsm that is passed to us from
3635 * LOV does not have valid lsm_oinfo data structs, so
3636 * don't go touching that. This needs to be fixed in a
3638 lsm->lsm_object_id = oa->o_id;
3645 int filter_destroy(struct obd_export *exp, struct obdo *oa,
3646 struct lov_stripe_md *md, struct obd_trans_info *oti,
3647 struct obd_export *md_exp)
3649 unsigned int qcids[MAXQUOTAS] = {0, 0};
3650 struct obd_device *obd;
3651 struct filter_obd *filter;
3652 struct dentry *dchild = NULL, *dparent = NULL;
3653 struct lvfs_run_ctxt saved;
3654 void *handle = NULL;
3655 struct llog_cookie *fcc = NULL;
3656 int rc, rc2, cleanup_phase = 0, sync = 0;
3660 LASSERT(oa->o_valid & OBD_MD_FLGROUP);
3663 filter = &obd->u.filter;
3665 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
3668 dchild = filter_fid2dentry(obd, NULL, oa->o_gr, oa->o_id);
3670 GOTO(cleanup, rc = PTR_ERR(dchild));
3673 if (dchild->d_inode == NULL) {
3674 CDEBUG(D_INODE, "destroying non-existent object "LPU64"\n",
3676 /* If object already gone, cancel cookie right now */
3677 if (oa->o_valid & OBD_MD_FLCOOKIE) {
3678 struct llog_ctxt *ctxt;
3679 struct obd_llog_group *olg;
3680 fcc = obdo_logcookie(oa);
3681 olg = filter_find_olg(obd, oa->o_gr);
3683 GOTO(cleanup, rc = PTR_ERR(olg));
3684 llog_group_set_export(olg, exp);
3686 ctxt = llog_group_get_ctxt(olg, fcc->lgc_subsys + 1);
3687 llog_cancel(ctxt, NULL, 1, fcc, 0);
3688 llog_ctxt_put(ctxt);
3689 fcc = NULL; /* we didn't allocate fcc, don't free it */
3691 GOTO(cleanup, rc = -ENOENT);
3694 filter_prepare_destroy(obd, oa->o_id, oa->o_gr);
3696 /* Our MDC connection is established by the MDS to us */
3697 if (oa->o_valid & OBD_MD_FLCOOKIE) {
3698 OBD_ALLOC(fcc, sizeof(*fcc));
3700 memcpy(fcc, obdo_logcookie(oa), sizeof(*fcc));
3702 DQUOT_INIT(dchild->d_inode);
3704 /* we're gonna truncate it first in order to avoid possible deadlock:
3706 * open trasaction open transaction
3707 * down(i_zombie) down(i_zombie)
3708 * restart transaction
3709 * (see BUG 4180) -bzzz
3711 LOCK_INODE_MUTEX(dchild->d_inode);
3712 handle = fsfilt_start_log(obd, dchild->d_inode, FSFILT_OP_SETATTR,
3714 if (IS_ERR(handle)) {
3715 UNLOCK_INODE_MUTEX(dchild->d_inode);
3716 GOTO(cleanup, rc = PTR_ERR(handle));
3719 iattr.ia_valid = ATTR_SIZE;
3721 rc = fsfilt_setattr(obd, dchild, handle, &iattr, 1);
3722 rc2 = fsfilt_commit(obd, dchild->d_inode, handle, 0);
3723 UNLOCK_INODE_MUTEX(dchild->d_inode);
3727 GOTO(cleanup, rc = rc2);
3729 /* We don't actually need to lock the parent until we are unlinking
3730 * here, and not while truncating above. That avoids holding the
3731 * parent lock for a long time during truncate, which can block other
3732 * threads from doing anything to objects in that directory. bug 7171 */
3733 dparent = filter_parent_lock(obd, oa->o_gr, oa->o_id);
3734 if (IS_ERR(dparent))
3735 GOTO(cleanup, rc = PTR_ERR(dparent));
3736 cleanup_phase = 3; /* filter_parent_unlock */
3738 LOCK_INODE_MUTEX(dchild->d_inode);
3739 handle = fsfilt_start_log(obd, dparent->d_inode,FSFILT_OP_UNLINK,oti,1);
3740 if (IS_ERR(handle)) {
3741 UNLOCK_INODE_MUTEX(dchild->d_inode);
3742 GOTO(cleanup, rc = PTR_ERR(handle));
3744 cleanup_phase = 4; /* fsfilt_commit */
3746 /* Quota release need uid/gid of inode */
3747 obdo_from_inode(oa, dchild->d_inode, OBD_MD_FLUID|OBD_MD_FLGID);
3749 filter_fmd_drop(exp, oa->o_id, oa->o_gr);
3751 /* this drops dchild->d_inode->i_mutex unconditionally */
3752 rc = filter_destroy_internal(obd, oa->o_id, oa->o_gr, dparent, dchild);
3756 switch(cleanup_phase) {
3759 sync = fsfilt_add_journal_cb(obd, 0, oti ?
3760 oti->oti_handle : handle,
3761 filter_cancel_cookies_cb,
3763 /* If add_journal_cb failed, then filter_finish_transno
3764 * will commit the handle and we will do a sync
3765 * on commit. then we call callback directly to free
3768 rc = filter_finish_transno(exp, oti, rc, sync);
3770 filter_cancel_cookies_cb(obd, 0, fcc, rc);
3773 rc2 = fsfilt_commit(obd, dparent->d_inode, handle, 0);
3775 CERROR("error on commit, err = %d\n", rc2);
3782 filter_parent_unlock(dparent);
3786 OBD_FREE(fcc, sizeof(*fcc));
3788 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
3791 CERROR("invalid cleanup_phase %d\n", cleanup_phase);
3795 /* trigger quota release */
3796 qcids[USRQUOTA] = oa->o_uid;
3797 qcids[GRPQUOTA] = oa->o_gid;
3798 rc2 = lquota_adjust(filter_quota_interface_ref, obd, qcids, NULL, rc,
3802 CDEBUG(D_QUOTA, "filter adjust qunit! (rc:%d)\n", rc2);
3806 /* NB start and end are used for punch, but not truncate */
3807 static int filter_truncate(struct obd_export *exp, struct obd_info *oinfo,
3808 struct obd_trans_info *oti,
3809 struct ptlrpc_request_set *rqset)
3814 if (oinfo->oi_policy.l_extent.end != OBD_OBJECT_EOF) {
3815 CERROR("PUNCH not supported, only truncate: end = "LPX64"\n",
3816 oinfo->oi_policy.l_extent.end);
3820 CDEBUG(D_INODE, "calling truncate for object "LPU64", valid = "LPX64
3821 ", o_size = "LPD64"\n", oinfo->oi_oa->o_id,
3822 oinfo->oi_oa->o_valid, oinfo->oi_policy.l_extent.start);
3824 rc = filter_auth_capa(exp, NULL, oinfo_mdsno(oinfo),
3825 oinfo_capa(oinfo), CAPA_OPC_OSS_TRUNC);
3829 oinfo->oi_oa->o_size = oinfo->oi_policy.l_extent.start;
3830 rc = filter_setattr(exp, oinfo, oti);
3834 static int filter_sync(struct obd_export *exp, struct obdo *oa,
3835 struct lov_stripe_md *lsm, obd_off start, obd_off end,
3838 struct lvfs_run_ctxt saved;
3839 struct filter_obd *filter;
3840 struct dentry *dentry;
3844 rc = filter_auth_capa(exp, NULL, obdo_mdsno(oa),
3845 (struct lustre_capa *)capa, CAPA_OPC_OSS_WRITE);
3849 filter = &exp->exp_obd->u.filter;
3851 /* an objid of zero is taken to mean "sync whole filesystem" */
3852 if (!oa || !(oa->o_valid & OBD_MD_FLID)) {
3853 rc = fsfilt_sync(exp->exp_obd, filter->fo_obt.obt_sb);
3854 /* flush any remaining cancel messages out to the target */
3855 filter_sync_llogs(exp->exp_obd, exp);
3859 dentry = filter_oa2dentry(exp->exp_obd, oa);
3861 RETURN(PTR_ERR(dentry));
3863 push_ctxt(&saved, &exp->exp_obd->obd_lvfs_ctxt, NULL);
3865 LOCK_INODE_MUTEX(dentry->d_inode);
3867 rc = filemap_fdatawrite(dentry->d_inode->i_mapping);
3869 /* just any file to grab fsync method - "file" arg unused */
3870 struct file *file = filter->fo_rcvd_filp;
3872 if (file->f_op && file->f_op->fsync)
3873 rc = file->f_op->fsync(NULL, dentry, 1);
3875 rc2 = filemap_fdatawait(dentry->d_inode->i_mapping);
3879 UNLOCK_INODE_MUTEX(dentry->d_inode);
3881 oa->o_valid = OBD_MD_FLID;
3882 obdo_from_inode(oa, dentry->d_inode, FILTER_VALID_FLAGS);
3884 pop_ctxt(&saved, &exp->exp_obd->obd_lvfs_ctxt, NULL);
3890 static int filter_get_info(struct obd_export *exp, __u32 keylen,
3891 void *key, __u32 *vallen, void *val)
3893 struct obd_device *obd;
3896 obd = class_exp2obd(exp);
3898 CDEBUG(D_IOCTL, "invalid client export %p\n", exp);
3902 if (KEY_IS("blocksize")) {
3903 __u32 *blocksize = val;
3905 if (*vallen < sizeof(*blocksize))
3907 *blocksize = obd->u.obt.obt_sb->s_blocksize;
3909 *vallen = sizeof(*blocksize);
3913 if (KEY_IS("blocksize_bits")) {
3914 __u32 *blocksize_bits = val;
3915 if (blocksize_bits) {
3916 if (*vallen < sizeof(*blocksize_bits))
3918 *blocksize_bits = obd->u.obt.obt_sb->s_blocksize_bits;
3920 *vallen = sizeof(*blocksize_bits);
3924 if (KEY_IS("last_id")) {
3925 obd_id *last_id = val;
3926 /* FIXME: object groups */
3928 if (*vallen < sizeof(*last_id))
3930 *last_id = filter_last_id(&obd->u.filter,
3931 exp->exp_filter_data.fed_group);
3933 *vallen = sizeof(*last_id);
3937 CDEBUG(D_IOCTL, "invalid key\n");
3941 static int filter_set_info_async(struct obd_export *exp, __u32 keylen,
3942 void *key, __u32 vallen, void *val,
3943 struct ptlrpc_request_set *set)
3945 struct obd_device *obd;
3946 struct obd_llog_group *olg;
3947 struct llog_ctxt *ctxt;
3953 CDEBUG(D_IOCTL, "invalid export %p\n", exp);
3957 if (KEY_IS(KEY_CAPA_KEY)) {
3958 rc = filter_update_capa_key(obd, (struct lustre_capa_key *)val);
3960 CERROR("filter update capability key failed: %d\n", rc);
3964 if (KEY_IS(KEY_REVIMP_UPD)) {
3965 filter_revimp_update(exp);
3969 if (!KEY_IS(KEY_MDS_CONN))
3972 LCONSOLE_WARN("%s: received MDS connection from %s\n", obd->obd_name,
3973 obd_export_nid2str(exp));
3974 obd->u.filter.fo_mdc_conn.cookie = exp->exp_handle.h_cookie;
3976 /* setup llog imports */
3977 LASSERT(val != NULL);
3978 group = (int)(*(__u32 *)val);
3979 LASSERT(group >= FILTER_GROUP_MDS0);
3981 olg = filter_find_olg(obd, group);
3983 RETURN(PTR_ERR(olg));
3984 llog_group_set_export(olg, exp);
3986 ctxt = llog_group_get_ctxt(olg, LLOG_MDS_OST_REPL_CTXT);
3987 LASSERTF(ctxt != NULL, "ctxt is null\n"),
3989 rc = llog_receptor_accept(ctxt, exp->exp_imp_reverse);
3990 llog_ctxt_put(ctxt);
3992 lquota_setinfo(filter_quota_interface_ref, exp, obd);
3997 int filter_iocontrol(unsigned int cmd, struct obd_export *exp,
3998 int len, void *karg, void *uarg)
4000 struct obd_device *obd = exp->exp_obd;
4001 struct obd_ioctl_data *data = karg;
4005 case OBD_IOC_ABORT_RECOVERY: {
4006 CERROR("aborting recovery for device %s\n", obd->obd_name);
4007 target_stop_recovery_thread(obd);
4011 case OBD_IOC_SYNC: {
4012 CDEBUG(D_RPCTRACE, "syncing ost %s\n", obd->obd_name);
4013 rc = fsfilt_sync(obd, obd->u.obt.obt_sb);
4017 case OBD_IOC_SET_READONLY: {
4019 struct super_block *sb = obd->u.obt.obt_sb;
4020 struct inode *inode = sb->s_root->d_inode;
4021 BDEVNAME_DECLARE_STORAGE(tmp);
4022 CERROR("*** setting device %s read-only ***\n",
4023 ll_bdevname(sb, tmp));
4025 handle = fsfilt_start(obd, inode, FSFILT_OP_MKNOD, NULL);
4026 if (!IS_ERR(handle))
4027 rc = fsfilt_commit(obd, inode, handle, 1);
4029 CDEBUG(D_HA, "syncing ost %s\n", obd->obd_name);
4030 rc = fsfilt_sync(obd, obd->u.obt.obt_sb);
4032 lvfs_set_rdonly(obd, obd->u.obt.obt_sb);
4036 case OBD_IOC_CATLOGLIST: {
4037 rc = llog_catalog_list(obd, 1, data);
4041 case OBD_IOC_LLOG_CANCEL:
4042 case OBD_IOC_LLOG_REMOVE:
4043 case OBD_IOC_LLOG_INFO:
4044 case OBD_IOC_LLOG_PRINT: {
4045 /* FIXME to be finished */
4046 RETURN(-EOPNOTSUPP);
4048 struct llog_ctxt *ctxt = NULL;
4050 push_ctxt(&saved, &ctxt->loc_exp->exp_obd->obd_lvfs_ctxt, NULL);
4051 rc = llog_ioctl(ctxt, cmd, data);
4052 pop_ctxt(&saved, &ctxt->loc_exp->exp_obd->obd_lvfs_ctxt, NULL);
4065 static int filter_health_check(struct obd_device *obd)
4067 #ifdef USE_HEALTH_CHECK_WRITE
4068 struct filter_obd *filter = &obd->u.filter;
4073 * health_check to return 0 on healthy
4074 * and 1 on unhealthy.
4076 if (obd->u.obt.obt_sb->s_flags & MS_RDONLY)
4079 #ifdef USE_HEALTH_CHECK_WRITE
4080 LASSERT(filter->fo_health_check_filp != NULL);
4081 rc |= !!lvfs_check_io_health(obd, filter->fo_health_check_filp);
4086 static struct dentry *filter_lvfs_fid2dentry(__u64 id, __u32 gen, __u64 gr,
4089 return filter_fid2dentry(data, NULL, gr, id);
4092 static int filter_process_config(struct obd_device *obd, obd_count len,
4095 struct lustre_cfg *lcfg = buf;
4096 struct lprocfs_static_vars lvars;
4099 switch (lcfg->lcfg_command) {
4100 case LCFG_SPTLRPC_CONF: {
4101 struct filter_obd *filter = &obd->u.filter;
4102 struct sptlrpc_conf_log *log;
4103 struct sptlrpc_rule_set tmp_rset;
4105 log = sptlrpc_conf_log_extract(lcfg);
4111 sptlrpc_rule_set_init(&tmp_rset);
4113 rc = sptlrpc_rule_set_from_log(&tmp_rset, log);
4115 CERROR("obd %s: failed get sptlrpc rules: %d\n",
4120 write_lock(&filter->fo_sptlrpc_lock);
4121 sptlrpc_rule_set_free(&filter->fo_sptlrpc_rset);
4122 filter->fo_sptlrpc_rset = tmp_rset;
4123 write_unlock(&filter->fo_sptlrpc_lock);
4125 sptlrpc_target_update_exp_flavor(obd, &tmp_rset);
4129 lprocfs_filter_init_vars(&lvars);
4131 rc = class_process_proc_param(PARAM_OST, lvars.obd_vars,
4139 static struct lvfs_callback_ops filter_lvfs_ops = {
4140 l_fid2dentry: filter_lvfs_fid2dentry,
4143 static struct obd_ops filter_obd_ops = {
4144 .o_owner = THIS_MODULE,
4145 .o_get_info = filter_get_info,
4146 .o_set_info_async = filter_set_info_async,
4147 .o_setup = filter_setup,
4148 .o_precleanup = filter_precleanup,
4149 .o_cleanup = filter_cleanup,
4150 .o_connect = filter_connect,
4151 .o_reconnect = filter_reconnect,
4152 .o_disconnect = filter_disconnect,
4153 .o_ping = filter_ping,
4154 .o_init_export = filter_init_export,
4155 .o_destroy_export = filter_destroy_export,
4156 .o_statfs = filter_statfs,
4157 .o_getattr = filter_getattr,
4158 .o_unpackmd = filter_unpackmd,
4159 .o_create = filter_create,
4160 .o_setattr = filter_setattr,
4161 .o_destroy = filter_destroy,
4162 .o_brw = filter_brw,
4163 .o_punch = filter_truncate,
4164 .o_sync = filter_sync,
4165 .o_preprw = filter_preprw,
4166 .o_commitrw = filter_commitrw,
4167 .o_llog_init = filter_llog_init,
4168 .o_llog_connect = filter_llog_connect,
4169 .o_llog_finish = filter_llog_finish,
4170 .o_iocontrol = filter_iocontrol,
4171 .o_health_check = filter_health_check,
4172 .o_process_config = filter_process_config,
4175 quota_interface_t *filter_quota_interface_ref;
4176 extern quota_interface_t filter_quota_interface;
4178 static int __init obdfilter_init(void)
4180 struct lprocfs_static_vars lvars;
4183 lprocfs_filter_init_vars(&lvars);
4185 request_module("lquota");
4186 OBD_ALLOC(obdfilter_created_scratchpad,
4187 OBDFILTER_CREATED_SCRATCHPAD_ENTRIES *
4188 sizeof(*obdfilter_created_scratchpad));
4189 if (obdfilter_created_scratchpad == NULL)
4192 ll_fmd_cachep = cfs_mem_cache_create("ll_fmd_cache",
4193 sizeof(struct filter_mod_data),
4196 GOTO(out, rc = -ENOMEM);
4198 filter_quota_interface_ref = PORTAL_SYMBOL_GET(filter_quota_interface);
4199 init_obd_quota_ops(filter_quota_interface_ref, &filter_obd_ops);
4201 rc = class_register_type(&filter_obd_ops, NULL, lvars.module_vars,
4202 LUSTRE_OST_NAME, NULL);
4206 err = cfs_mem_cache_destroy(ll_fmd_cachep);
4207 LASSERTF(err == 0, "Cannot destroy ll_fmd_cachep: rc %d\n",err);
4208 ll_fmd_cachep = NULL;
4210 if (filter_quota_interface_ref)
4211 PORTAL_SYMBOL_PUT(filter_quota_interface);
4213 OBD_FREE(obdfilter_created_scratchpad,
4214 OBDFILTER_CREATED_SCRATCHPAD_ENTRIES *
4215 sizeof(*obdfilter_created_scratchpad));
4221 static void __exit obdfilter_exit(void)
4223 if (filter_quota_interface_ref)
4224 PORTAL_SYMBOL_PUT(filter_quota_interface);
4226 if (ll_fmd_cachep) {
4227 int rc = cfs_mem_cache_destroy(ll_fmd_cachep);
4228 LASSERTF(rc == 0, "Cannot destroy ll_fmd_cachep: rc %d\n", rc);
4229 ll_fmd_cachep = NULL;
4232 class_unregister_type(LUSTRE_OST_NAME);
4233 OBD_FREE(obdfilter_created_scratchpad,
4234 OBDFILTER_CREATED_SCRATCHPAD_ENTRIES *
4235 sizeof(*obdfilter_created_scratchpad));
4238 MODULE_AUTHOR("Cluster File Systems, Inc. <info@clusterfs.com>");
4239 MODULE_DESCRIPTION("Lustre Filtering OBD driver");
4240 MODULE_LICENSE("GPL");
4242 module_init(obdfilter_init);
4243 module_exit(obdfilter_exit);