1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
5 * Lustre Metadata Server (mds) request handler
7 * Copyright (c) 2001-2003 Cluster File Systems, Inc.
8 * Author: Peter Braam <braam@clusterfs.com>
9 * Author: Andreas Dilger <adilger@clusterfs.com>
10 * Author: Phil Schwan <phil@clusterfs.com>
11 * Author: Mike Shaver <shaver@clusterfs.com>
13 * This file is part of Lustre, http://www.lustre.org.
15 * Lustre is free software; you can redistribute it and/or
16 * modify it under the terms of version 2 of the GNU General Public
17 * License as published by the Free Software Foundation.
19 * Lustre is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU General Public License for more details.
24 * You should have received a copy of the GNU General Public License
25 * along with Lustre; if not, write to the Free Software
26 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
30 # define EXPORT_SYMTAB
32 #define DEBUG_SUBSYSTEM S_MDS
34 #include <linux/module.h>
35 #include <linux/lustre_mds.h>
36 #include <linux/lustre_dlm.h>
37 #include <linux/init.h>
38 #include <linux/obd_class.h>
39 #include <linux/random.h>
41 #include <linux/jbd.h>
42 #include <linux/namei.h>
43 #include <linux/ext3_fs.h>
44 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0))
45 # include <linux/smp_lock.h>
46 # include <linux/buffer_head.h>
47 # include <linux/workqueue.h>
48 # include <linux/mount.h>
50 # include <linux/locks.h>
52 #include <linux/obd_lov.h>
53 #include <linux/obd_ost.h>
54 #include <linux/lustre_mds.h>
55 #include <linux/lustre_fsfilt.h>
56 #include <linux/lprocfs_status.h>
57 #include <linux/lustre_commit_confd.h>
58 #include <linux/lustre_acl.h>
59 #include "mds_internal.h"
61 static int mds_intent_policy(struct ldlm_namespace *ns,
62 struct ldlm_lock **lockp, void *req_cookie,
63 ldlm_mode_t mode, int flags, void *data);
64 static int mds_postsetup(struct obd_device *obd);
65 static int mds_cleanup(struct obd_device *obd, int flags);
68 /* Assumes caller has already pushed into the kernel filesystem context */
69 static int mds_sendpage(struct ptlrpc_request *req, struct file *file,
70 loff_t offset, int count)
72 struct ptlrpc_bulk_desc *desc;
73 struct l_wait_info lwi;
75 int rc = 0, npages, i, tmpcount, tmpsize = 0;
78 LASSERT((offset & (PAGE_SIZE - 1)) == 0); /* I'm dubious about this */
80 npages = (count + PAGE_SIZE - 1) >> PAGE_SHIFT;
81 OBD_ALLOC(pages, sizeof(*pages) * npages);
83 GOTO(out, rc = -ENOMEM);
85 desc = ptlrpc_prep_bulk_exp(req, npages, BULK_PUT_SOURCE,
88 GOTO(out_free, rc = -ENOMEM);
90 for (i = 0, tmpcount = count; i < npages; i++, tmpcount -= tmpsize) {
91 tmpsize = tmpcount > PAGE_SIZE ? PAGE_SIZE : tmpcount;
93 pages[i] = alloc_pages(GFP_KERNEL, 0);
95 GOTO(cleanup_buf, rc = -ENOMEM);
97 ptlrpc_prep_bulk_page(desc, pages[i], 0, tmpsize);
100 for (i = 0, tmpcount = count; i < npages; i++, tmpcount -= tmpsize) {
101 tmpsize = tmpcount > PAGE_SIZE ? PAGE_SIZE : tmpcount;
102 CDEBUG(D_EXT2, "reading %u@%llu from dir %lu (size %llu)\n",
103 tmpsize, offset, file->f_dentry->d_inode->i_ino,
104 file->f_dentry->d_inode->i_size);
106 rc = fsfilt_readpage(req->rq_export->exp_obd, file,
107 kmap(pages[i]), tmpsize, &offset);
111 GOTO(cleanup_buf, rc = -EIO);
114 LASSERT(desc->bd_nob == count);
116 rc = ptlrpc_start_bulk_transfer(desc);
118 GOTO(cleanup_buf, rc);
120 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_SENDPAGE)) {
121 CERROR("obd_fail_loc=%x, fail operation rc=%d\n",
122 OBD_FAIL_MDS_SENDPAGE, rc = -EIO);
123 GOTO(abort_bulk, rc);
126 lwi = LWI_TIMEOUT(obd_timeout * HZ / 4, NULL, NULL);
127 rc = l_wait_event(desc->bd_waitq, !ptlrpc_bulk_active(desc), &lwi);
128 LASSERT (rc == 0 || rc == -ETIMEDOUT);
131 if (desc->bd_success &&
132 desc->bd_nob_transferred == count)
133 GOTO(cleanup_buf, rc);
135 rc = -ETIMEDOUT; /* XXX should this be a different errno? */
138 DEBUG_REQ(D_ERROR, req, "bulk failed: %s %d(%d), evicting %s@%s\n",
139 (rc == -ETIMEDOUT) ? "timeout" : "network error",
140 desc->bd_nob_transferred, count,
141 req->rq_export->exp_client_uuid.uuid,
142 req->rq_export->exp_connection->c_remote_uuid.uuid);
144 ptlrpc_fail_export(req->rq_export);
148 ptlrpc_abort_bulk (desc);
150 for (i = 0; i < npages; i++)
152 __free_pages(pages[i], 0);
154 ptlrpc_free_bulk(desc);
156 OBD_FREE(pages, sizeof(*pages) * npages);
161 extern char *ldlm_lockname[];
163 int mds_lock_mode_for_dir(struct obd_device *obd,
164 struct dentry *dentry, int mode)
166 int ret_mode = 0, split;
168 /* any dir access needs couple locks:
169 * 1) on part of dir we gonna lookup/modify in
170 * 2) on a whole dir to protect it from concurrent splitting
171 * and to flush client's cache for readdir()
172 * so, for a given mode and dentry this routine decides what
173 * lock mode to use for lock #2:
174 * 1) if caller's gonna lookup in dir then we need to protect
175 * dir from being splitted only - LCK_CR
176 * 2) if caller's gonna modify dir then we need to protect
177 * dir from being splitted and to flush cache - LCK_CW
178 * 3) if caller's gonna modify dir and that dir seems ready
179 * for splitting then we need to protect it from any
180 * type of access (lookup/modify/split) - LCK_EX -bzzz */
182 split = mds_splitting_expected(obd, dentry);
185 * it is important to check here only for MDS_NO_SPLITTABLE. The reason
186 * is that MDS_NO_SPLITTABLE means dir is not splittable in principle
187 * and another thread will not split it on the quiet. But if we have
188 * MDS_NO_SPLIT_EXPECTED, this means, that dir may be splitted anytime,
189 * but not now (for current thread) and we should consider that it can
190 * happen soon and go that branch which can yield LCK_EX to protect from
191 * possible splitting.
193 if (split == MDS_NO_SPLITTABLE) {
195 * this inode won't be splitted. so we need not to protect from
196 * just flush client's cache on modification.
203 if (mode == LCK_EX) {
205 } else if (mode == LCK_PR) {
207 } else if (mode == LCK_PW) {
209 * caller gonna modify directory. We use concurrent
210 * write lock here to retract client's cache for
213 if (split == MDS_EXPECT_SPLIT) {
215 * splitting possible. serialize any access the
216 * idea is that first one seen dir is splittable
217 * is given exclusive lock and split
218 * directory. caller passes lock mode to
219 * mds_try_to_split_dir() and splitting would be
220 * done with exclusive lock only -bzzz.
222 CDEBUG(D_OTHER, "%s: gonna split %lu/%lu\n",
224 (unsigned long)dentry->d_inode->i_ino,
225 (unsigned long)dentry->d_inode->i_generation);
236 /* only valid locked dentries or errors should be returned */
237 struct dentry *mds_id2locked_dentry(struct obd_device *obd, struct lustre_id *id,
238 struct vfsmount **mnt, int lock_mode,
239 struct lustre_handle *lockh, int *mode,
240 char *name, int namelen, __u64 lockpart)
242 struct dentry *de = mds_id2dentry(obd, id, mnt), *retval = de;
243 ldlm_policy_data_t policy = { .l_inodebits = { lockpart } };
244 struct ldlm_res_id res_id = { .name = {0} };
252 res_id.name[0] = id_fid(id);
253 res_id.name[1] = id_group(id);
256 if (name && IS_PDIROPS(de->d_inode)) {
257 ldlm_policy_data_t cpolicy =
258 { .l_inodebits = { MDS_INODELOCK_UPDATE } };
259 LASSERT(mode != NULL);
260 *mode = mds_lock_mode_for_dir(obd, de, lock_mode);
262 rc = ldlm_cli_enqueue(NULL, NULL, obd->obd_namespace,
264 &cpolicy, *mode, &flags,
266 ldlm_completion_ast, NULL, NULL,
267 NULL, 0, NULL, lockh + 1);
268 if (rc != ELDLM_OK) {
270 RETURN(ERR_PTR(-ENOLCK));
275 res_id.name[2] = full_name_hash((unsigned char *)name, namelen);
277 CDEBUG(D_INFO, "take lock on "DLID4":"LPX64"\n",
278 OLID4(id), res_id.name[2]);
281 #warning "No PDIROPS support in the kernel"
283 rc = ldlm_cli_enqueue(NULL, NULL, obd->obd_namespace, res_id,
284 LDLM_IBITS, &policy, lock_mode, &flags,
285 mds_blocking_ast, ldlm_completion_ast,
286 NULL, NULL, NULL, 0, NULL, lockh);
287 if (rc != ELDLM_OK) {
289 retval = ERR_PTR(-EIO); /* XXX translate ldlm code */
292 ldlm_lock_decref(lockh + 1, *mode);
299 #ifndef DCACHE_DISCONNECTED
300 #define DCACHE_DISCONNECTED DCACHE_NFSD_DISCONNECTED
303 /* Look up an entry by inode number. This function ONLY returns valid dget'd
304 * dentries with an initialized inode or errors */
305 struct dentry *mds_id2dentry(struct obd_device *obd, struct lustre_id *id,
306 struct vfsmount **mnt)
308 unsigned long ino = (unsigned long)id_ino(id);
309 __u32 generation = (__u32)id_gen(id);
310 struct mds_obd *mds = &obd->u.mds;
311 struct dentry *result;
316 RETURN(ERR_PTR(-ESTALE));
318 snprintf(idname, sizeof(idname), "0x%lx", ino);
320 CDEBUG(D_DENTRY, "--> mds_id2dentry: ino/gen %lu/%u, sb %p\n",
321 ino, generation, mds->mds_sb);
323 /* under ext3 this is neither supposed to return bad inodes nor NULL
325 result = ll_lookup_one_len(idname, mds->mds_id_de,
330 inode = result->d_inode;
332 RETURN(ERR_PTR(-ENOENT));
334 if (is_bad_inode(inode)) {
335 CERROR("bad inode returned %lu/%u\n",
336 inode->i_ino, inode->i_generation);
338 RETURN(ERR_PTR(-ENOENT));
341 /* here we disabled generation check, as root inode i_generation
342 * of cache mds and real mds are different. */
343 if (inode->i_ino != id_ino(&mds->mds_rootid) && generation &&
344 inode->i_generation != generation) {
345 /* we didn't find the right inode.. */
346 CERROR("bad inode %lu, link: %lu, ct: %d, generation %u/%u\n",
347 inode->i_ino, (unsigned long)inode->i_nlink,
348 atomic_read(&inode->i_count), inode->i_generation,
351 RETURN(ERR_PTR(-ENOENT));
355 *mnt = mds->mds_vfsmnt;
363 int mds_req_add_idmapping(struct ptlrpc_request *req,
364 struct mds_export_data *med)
366 struct mds_req_sec_desc *rsd;
367 struct lustre_sec_desc *lsd;
370 if (!med->med_remote)
373 /* maybe we should do it more completely: invalidate the gss ctxt? */
374 if (req->rq_mapped_uid == MDS_IDMAP_NOTFOUND) {
375 CWARN("didn't find mapped uid\n");
379 rsd = lustre_swab_mds_secdesc(req, MDS_REQ_SECDESC_OFF);
381 CERROR("Can't unpack security desc\n");
385 lsd = mds_get_lsd(req->rq_mapped_uid);
387 CERROR("can't get LSD(%u), no mapping added\n",
392 rc = mds_idmap_add(med->med_idmap, rsd->rsd_uid, lsd->lsd_uid,
393 rsd->rsd_gid, lsd->lsd_gid);
399 int mds_req_del_idmapping(struct ptlrpc_request *req,
400 struct mds_export_data *med)
402 struct mds_req_sec_desc *rsd;
403 struct lustre_sec_desc *lsd;
406 if (!med->med_remote)
409 rsd = lustre_swab_mds_secdesc(req, MDS_REQ_SECDESC_OFF);
411 CERROR("Can't unpack security desc\n");
415 LASSERT(req->rq_mapped_uid != -1);
416 lsd = mds_get_lsd(req->rq_mapped_uid);
418 CERROR("can't get LSD(%u), no idmapping deleted\n",
423 rc = mds_idmap_del(med->med_idmap, rsd->rsd_uid, lsd->lsd_uid,
424 rsd->rsd_gid, lsd->lsd_gid);
429 static int mds_init_export_data(struct ptlrpc_request *req,
430 struct mds_export_data *med)
432 struct obd_connect_data *data, *reply;
433 int ask_remote, ask_local;
436 data = lustre_msg_buf(req->rq_reqmsg, 5, sizeof(*data));
437 reply = lustre_msg_buf(req->rq_repmsg, 0, sizeof(*data));
438 LASSERT(data && reply);
440 if (med->med_initialized) {
441 CDEBUG(D_SEC, "med already initialized, reconnect?\n");
445 ask_remote = data->ocd_connect_flags & OBD_CONNECT_REMOTE;
446 ask_local = data->ocd_connect_flags & OBD_CONNECT_LOCAL;
448 /* currently the policy is simple: satisfy client as possible
451 if (req->rq_auth_uid == -1) {
453 CWARN("null sec is used, force to be local\n");
457 if (!req->rq_remote_realm)
458 CWARN("local realm asked to be remote\n");
460 } else if (ask_local) {
461 if (req->rq_remote_realm)
462 CWARN("remote realm asked to be local\n");
465 med->med_remote = (req->rq_remote_realm != 0);
468 med->med_nllu = data->ocd_nllu[0];
469 med->med_nllg = data->ocd_nllu[1];
471 med->med_initialized = 1;
473 reply->ocd_connect_flags &= ~(OBD_CONNECT_REMOTE | OBD_CONNECT_LOCAL);
474 if (med->med_remote) {
476 med->med_idmap = mds_idmap_alloc();
479 CERROR("Failed to alloc idmap, following request from "
480 "this client will be refused\n");
482 reply->ocd_connect_flags |= OBD_CONNECT_REMOTE;
483 CDEBUG(D_SEC, "set client as remote\n");
485 reply->ocd_connect_flags |= OBD_CONNECT_LOCAL;
486 CDEBUG(D_SEC, "set client as local\n");
492 static void mds_free_export_data(struct mds_export_data *med)
497 LASSERT(med->med_remote);
498 mds_idmap_free(med->med_idmap);
499 med->med_idmap = NULL;
502 /* Establish a connection to the MDS.
504 * This will set up an export structure for the client to hold state data about
505 * that client, like open files, the last operation number it did on the server,
508 static int mds_connect(struct lustre_handle *conn, struct obd_device *obd,
509 struct obd_uuid *cluuid, struct obd_connect_data *data,
512 struct mds_export_data *med;
513 struct mds_client_data *mcd;
514 struct obd_export *exp;
518 if (!conn || !obd || !cluuid)
521 /* XXX There is a small race between checking the list and adding a new
522 * connection for the same UUID, but the real threat (list corruption
523 * when multiple different clients connect) is solved.
525 * There is a second race between adding the export to the list, and
526 * filling in the client data below. Hence skipping the case of NULL
527 * mcd above. We should already be controlling multiple connects at the
528 * client, and we can't hold the spinlock over memory allocations
529 * without risk of deadlocking.
531 rc = class_connect(conn, obd, cluuid);
534 exp = class_conn2export(conn);
536 LASSERT(exp != NULL);
537 med = &exp->exp_mds_data;
539 OBD_ALLOC(mcd, sizeof(*mcd));
541 CERROR("%s: out of memory for client data.\n",
543 GOTO(out, rc = -ENOMEM);
546 memcpy(mcd->mcd_uuid, cluuid, sizeof(mcd->mcd_uuid));
549 rc = mds_client_add(obd, &obd->u.mds, med, -1);
557 OBD_FREE(mcd, sizeof(*mcd));
558 class_disconnect(exp, 0);
560 class_export_put(exp);
565 static int mds_connect_post(struct obd_export *exp, unsigned initial,
568 struct obd_device *obd = exp->exp_obd;
569 struct mds_obd *mds = &obd->u.mds;
570 struct mds_export_data *med;
571 struct mds_client_data *mcd;
575 med = &exp->exp_mds_data;
579 /* some one reconnect initially, we have to reset
580 * data existing export can have. bug 6102 */
581 if (mcd->mcd_last_xid != 0)
582 CDEBUG(D_HA, "initial reconnect to existing export\n");
583 mcd->mcd_last_transno = 0;
584 mcd->mcd_last_xid = 0;
585 mcd->mcd_last_result = 0;
586 mcd->mcd_last_data = 0;
589 if (!(flags & OBD_OPT_MDS_CONNECTION)) {
590 if (!(exp->exp_flags & OBD_OPT_REAL_CLIENT)) {
591 atomic_inc(&mds->mds_real_clients);
592 CDEBUG(D_OTHER,"%s: peer from %s is real client (%d)\n",
593 obd->obd_name, exp->exp_client_uuid.uuid,
594 atomic_read(&mds->mds_real_clients));
595 exp->exp_flags |= OBD_OPT_REAL_CLIENT;
597 if (mds->mds_md_name)
598 rc = mds_md_connect(obd, mds->mds_md_name);
603 static int mds_init_export(struct obd_export *exp)
605 struct mds_export_data *med = &exp->exp_mds_data;
607 INIT_LIST_HEAD(&med->med_open_head);
608 spin_lock_init(&med->med_open_lock);
612 static int mds_destroy_export(struct obd_export *export)
614 struct obd_device *obd = export->exp_obd;
615 struct mds_export_data *med = &export->exp_mds_data;
616 struct lvfs_run_ctxt saved;
620 mds_free_export_data(med);
621 target_destroy_export(export);
623 if (obd_uuid_equals(&export->exp_client_uuid, &obd->obd_uuid))
626 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
628 /* Close any open files (which may also cause orphan unlinking). */
629 spin_lock(&med->med_open_lock);
630 while (!list_empty(&med->med_open_head)) {
631 struct list_head *tmp = med->med_open_head.next;
632 struct mds_file_data *mfd =
633 list_entry(tmp, struct mds_file_data, mfd_list);
634 struct lustre_id sid;
636 BDEVNAME_DECLARE_STORAGE(btmp);
638 /* bug 1579: fix force-closing for 2.5 */
639 struct dentry *dentry = mfd->mfd_dentry;
641 list_del(&mfd->mfd_list);
642 spin_unlock(&med->med_open_lock);
644 down(&dentry->d_inode->i_sem);
645 rc = mds_read_inode_sid(obd, dentry->d_inode, &sid);
646 up(&dentry->d_inode->i_sem);
648 CERROR("Can't read inode self id, inode %lu, "
649 "rc %d\n", dentry->d_inode->i_ino, rc);
650 memset(&sid, 0, sizeof(sid));
653 /* If you change this message, be sure to update
654 * replay_single:test_46 */
655 CERROR("force closing client file handle for %.*s (%s:"
656 DLID4")\n", dentry->d_name.len, dentry->d_name.name,
657 ll_bdevname(dentry->d_inode->i_sb, btmp),
660 /* child inode->i_alloc_sem protects orphan_dec_test and
661 * is_orphan race, mds_mfd_close drops it */
662 DOWN_WRITE_I_ALLOC_SEM(dentry->d_inode);
663 rc = mds_mfd_close(NULL, 0, obd, mfd,
664 !(export->exp_flags & OBD_OPT_FAILOVER));
666 CDEBUG(D_INODE, "Error closing file: %d\n", rc);
667 spin_lock(&med->med_open_lock);
669 spin_unlock(&med->med_open_lock);
670 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
674 mds_client_free(export, !(export->exp_flags & OBD_OPT_FAILOVER));
678 static int mds_disconnect(struct obd_export *exp, unsigned long flags)
680 unsigned long irqflags;
681 struct obd_device *obd;
686 LASSERT(exp != NULL);
687 obd = class_exp2obd(exp);
689 CDEBUG(D_IOCTL, "invalid client cookie "LPX64"\n",
690 exp->exp_handle.h_cookie);
696 * suppress any inter-mds requests durring disconnecting lmv if this is
697 * detected --force mode. This is needed to avoid endless recovery.
699 if (atomic_read(&mds->mds_real_clients) > 0 &&
700 !(exp->exp_flags & OBD_OPT_REAL_CLIENT))
701 flags |= OBD_OPT_FORCE;
703 if (!(exp->exp_flags & OBD_OPT_REAL_CLIENT)
704 && !atomic_read(&mds->mds_real_clients)) {
705 /* there was no client at all */
706 mds_md_disconnect(obd, flags);
709 if ((exp->exp_flags & OBD_OPT_REAL_CLIENT)
710 && atomic_dec_and_test(&mds->mds_real_clients)) {
711 /* time to drop LMV connections */
712 CDEBUG(D_OTHER, "%s: last real client %s disconnected. "
713 "Disconnnect from LMV now\n",
714 obd->obd_name, exp->exp_client_uuid.uuid);
715 mds_md_disconnect(obd, flags);
718 spin_lock_irqsave(&exp->exp_lock, irqflags);
719 exp->exp_flags = flags;
720 spin_unlock_irqrestore(&exp->exp_lock, irqflags);
722 /* disconnect early so that clients can't keep using export */
723 rc = class_disconnect(exp, flags);
724 ldlm_cancel_locks_for_export(exp);
726 /* complete all outstanding replies */
727 spin_lock_irqsave(&exp->exp_lock, irqflags);
728 while (!list_empty(&exp->exp_outstanding_replies)) {
729 struct ptlrpc_reply_state *rs =
730 list_entry(exp->exp_outstanding_replies.next,
731 struct ptlrpc_reply_state, rs_exp_list);
732 struct ptlrpc_service *svc = rs->rs_srv_ni->sni_service;
734 spin_lock(&svc->srv_lock);
735 list_del_init(&rs->rs_exp_list);
736 ptlrpc_schedule_difficult_reply(rs);
737 spin_unlock(&svc->srv_lock);
739 spin_unlock_irqrestore(&exp->exp_lock, irqflags);
743 static int mds_getstatus(struct ptlrpc_request *req)
745 struct mds_obd *mds = mds_req2mds(req);
746 struct mds_body *body;
750 size = sizeof(*body);
752 rc = lustre_pack_reply(req, 1, &size, NULL);
753 if (rc || OBD_FAIL_CHECK(OBD_FAIL_MDS_GETSTATUS_PACK)) {
754 CERROR("mds: out of memory for message: size=%d\n", size);
755 req->rq_status = -ENOMEM; /* superfluous? */
759 body = lustre_msg_buf(req->rq_repmsg, 0, sizeof(*body));
760 body->valid |= OBD_MD_FID;
762 memcpy(&body->id1, &mds->mds_rootid, sizeof(body->id1));
765 * the last_committed and last_xid fields are filled in for all replies
766 * already - no need to do so here also.
771 int mds_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
772 void *data, int flag)
777 if (flag == LDLM_CB_CANCELING) {
778 /* Don't need to do anything here. */
782 /* XXX layering violation! -phil */
783 l_lock(&lock->l_resource->lr_namespace->ns_lock);
786 * get this: if mds_blocking_ast is racing with mds_intent_policy, such
787 * that mds_blocking_ast is called just before l_i_p takes the ns_lock,
788 * then by the time we get the lock, we might not be the correct
789 * blocking function anymore. So check, and return early, if so.
791 if (lock->l_blocking_ast != mds_blocking_ast) {
792 l_unlock(&lock->l_resource->lr_namespace->ns_lock);
796 lock->l_flags |= LDLM_FL_CBPENDING;
797 do_ast = (!lock->l_readers && !lock->l_writers);
798 l_unlock(&lock->l_resource->lr_namespace->ns_lock);
801 struct lustre_handle lockh;
804 LDLM_DEBUG(lock, "already unused, calling ldlm_cli_cancel");
805 ldlm_lock2handle(lock, &lockh);
806 rc = ldlm_cli_cancel(&lockh);
808 CERROR("ldlm_cli_cancel: %d\n", rc);
810 LDLM_DEBUG(lock, "Lock still has references, will be "
816 static int mds_convert_md(struct obd_device *obd, struct inode *inode,
817 void *md, int size, int mea)
821 if (S_ISREG(inode->i_mode)) {
822 rc = mds_convert_lov_ea(obd, inode, md, size);
823 } else if (S_ISDIR(inode->i_mode)) {
825 rc = mds_convert_mea_ea(obd, inode, md, size);
827 rc = mds_convert_lov_ea(obd, inode, md, size);
830 CERROR("Invalid EA format (nor LOV or MEA) "
831 "is detected. Inode %lu/%u\n",
832 inode->i_ino, inode->i_generation);
838 int mds_get_md(struct obd_device *obd, struct inode *inode,
839 void *md, int *size, int lock, int mea)
848 rc = fsfilt_get_md(obd, inode, md, *size,
849 (mea ? EA_MEA : EA_LOV));
851 CERROR("Error %d reading eadata for ino %lu\n",
855 rc = mds_convert_md(obd, inode, md,
871 /* Call with lock=1 if you want mds_pack_md to take the i_sem.
872 * Call with lock=0 if the caller has already taken the i_sem. */
873 int mds_pack_md(struct obd_device *obd, struct lustre_msg *msg, int offset,
874 struct mds_body *body, struct inode *inode, int lock, int mea)
876 struct mds_obd *mds = &obd->u.mds;
882 lmm = lustre_msg_buf(msg, offset, 0);
884 /* Some problem with getting eadata when I sized the reply
886 CDEBUG(D_INFO, "no space reserved for inode %lu MD\n",
890 lmm_size = msg->buflens[offset];
892 /* I don't really like this, but it is a sanity check on the client
893 * MD request. However, if the client doesn't know how much space
894 * to reserve for the MD, it shouldn't be bad to have too much space.
896 if (lmm_size > mds->mds_max_mdsize) {
897 CWARN("Reading MD for inode %lu of %d bytes > max %d\n",
898 inode->i_ino, lmm_size, mds->mds_max_mdsize);
902 rc = mds_get_md(obd, inode, lmm, &lmm_size, lock, mea);
904 if (S_ISDIR(inode->i_mode))
905 body->valid |= OBD_MD_FLDIREA;
907 body->valid |= OBD_MD_FLEASIZE;
910 body->valid |= OBD_MD_MEA;
912 body->eadatasize = lmm_size;
918 int mds_pack_link(struct dentry *dentry, struct ptlrpc_request *req,
919 struct mds_body *repbody, int reply_off)
921 struct inode *inode = dentry->d_inode;
926 symname = lustre_msg_buf(req->rq_repmsg, reply_off + 1,0);
927 LASSERT(symname != NULL);
928 len = req->rq_repmsg->buflens[reply_off + 1];
930 rc = inode->i_op->readlink(dentry, symname, len);
932 CERROR("readlink failed: %d\n", rc);
933 } else if (rc != len - 1) {
934 CERROR ("Unexpected readlink rc %d: expecting %d\n",
938 CDEBUG(D_INODE, "read symlink dest %s\n", symname);
939 repbody->valid |= OBD_MD_LINKNAME;
940 repbody->eadatasize = rc + 1;
941 symname[rc] = 0; /* NULL terminate */
948 int mds_pack_ea(struct dentry *dentry, struct ptlrpc_request *req,
949 struct mds_body *repbody, int req_off, int reply_off)
951 struct inode *inode = dentry->d_inode;
957 ea_name = lustre_msg_string(req->rq_reqmsg, req_off + 1, 0);
958 len = req->rq_repmsg->buflens[reply_off + 1];
960 value = lustre_msg_buf(req->rq_repmsg, reply_off + 1, len);
963 if (inode->i_op && inode->i_op->getxattr)
964 rc = inode->i_op->getxattr(dentry, ea_name, value, len);
967 if (rc != -ENODATA && rc != -EOPNOTSUPP)
968 CERROR("getxattr failed: %d", rc);
970 repbody->valid |= OBD_MD_FLEA;
971 repbody->eadatasize = rc;
978 int mds_pack_ealist(struct dentry *dentry, struct ptlrpc_request *req,
979 struct mds_body *repbody, int reply_off)
981 struct inode *inode = dentry->d_inode;
986 len = req->rq_repmsg->buflens[reply_off + 1];
988 value = lustre_msg_buf(req->rq_repmsg, reply_off + 1, len);
991 if (inode->i_op && inode->i_op->getxattr)
992 rc = inode->i_op->listxattr(dentry, value, len);
995 CERROR("listxattr failed: %d", rc);
997 repbody->valid |= OBD_MD_FLEALIST;
998 repbody->eadatasize = rc;
1004 int mds_pack_acl(struct obd_device *obd, struct lustre_msg *repmsg, int offset,
1005 struct mds_body *body, struct inode *inode)
1007 struct dentry de = { .d_inode = inode };
1008 __u32 buflen, *sizep;
1013 if (!inode->i_op->getxattr)
1016 buflen = repmsg->buflens[offset + 1];
1017 buf = lustre_msg_buf(repmsg, offset + 1, buflen);
1019 size = inode->i_op->getxattr(&de, XATTR_NAME_ACL_ACCESS, buf, buflen);
1020 if (size == -ENODATA || size == -EOPNOTSUPP)
1026 sizep = lustre_msg_buf(repmsg, offset, 4);
1028 CERROR("can't locate returned acl size buf\n");
1032 *sizep = cpu_to_le32(size);
1033 body->valid |= OBD_MD_FLACL_ACCESS;
1039 * here we take simple rule: once uid/fsuid is root, we also squash
1040 * the gid/fsgid, don't care setuid/setgid attributes.
1042 int mds_squash_root(struct mds_obd *mds, struct mds_req_sec_desc *rsd,
1045 if (!mds->mds_squash_uid || *peernid == mds->mds_nosquash_nid)
1048 if (rsd->rsd_uid && rsd->rsd_fsuid)
1051 CDEBUG(D_SEC, "squash req from "LPX64":"
1052 "(%u:%u-%u:%u/%x)=>(%u:%u-%u:%u/%x)\n", *peernid,
1053 rsd->rsd_uid, rsd->rsd_gid,
1054 rsd->rsd_fsuid, rsd->rsd_fsgid, rsd->rsd_cap,
1055 rsd->rsd_uid ? rsd->rsd_uid : mds->mds_squash_uid,
1056 rsd->rsd_uid ? rsd->rsd_gid : mds->mds_squash_gid,
1057 rsd->rsd_fsuid ? rsd->rsd_fsuid : mds->mds_squash_uid,
1058 rsd->rsd_fsuid ? rsd->rsd_fsgid : mds->mds_squash_gid,
1059 rsd->rsd_cap & ~CAP_FS_MASK);
1061 if (rsd->rsd_uid == 0) {
1062 rsd->rsd_uid = mds->mds_squash_uid;
1063 rsd->rsd_gid = mds->mds_squash_gid;
1065 if (rsd->rsd_fsuid == 0) {
1066 rsd->rsd_fsuid = mds->mds_squash_uid;
1067 rsd->rsd_fsgid = mds->mds_squash_gid;
1069 rsd->rsd_cap &= ~CAP_FS_MASK;
1074 static int mds_getattr_internal(struct obd_device *obd, struct dentry *dentry,
1075 struct ptlrpc_request *req, int req_off,
1076 struct mds_body *reqbody, int reply_off)
1078 struct mds_export_data *med = &req->rq_export->u.eu_mds_data;
1079 struct inode *inode = dentry->d_inode;
1080 struct mds_body *body;
1084 if (inode == NULL && !(dentry->d_flags & DCACHE_CROSS_REF))
1087 body = lustre_msg_buf(req->rq_repmsg, reply_off, sizeof(*body));
1088 LASSERT(body != NULL); /* caller prepped reply */
1090 if (dentry->d_flags & DCACHE_CROSS_REF) {
1091 mds_pack_dentry2body(obd, body, dentry,
1092 (reqbody->valid & OBD_MD_FID) ? 1 : 0);
1093 CDEBUG(D_OTHER, "cross reference: "DLID4"\n",
1098 mds_pack_inode2body(obd, body, inode,
1099 (reqbody->valid & OBD_MD_FID) ? 1 : 0);
1101 if ((S_ISREG(inode->i_mode) && (reqbody->valid & OBD_MD_FLEASIZE)) ||
1102 (S_ISDIR(inode->i_mode) && (reqbody->valid & OBD_MD_FLDIREA))) {
1104 /* guessing what kind og attribute do we need. */
1105 int is_mea = (S_ISDIR(inode->i_mode) &&
1106 (reqbody->valid & OBD_MD_MEA) != 0);
1108 rc = mds_pack_md(obd, req->rq_repmsg, reply_off + 1,
1109 body, inode, 1, is_mea);
1111 /* if we have LOV EA data, the OST holds size, atime, mtime. */
1112 if (!(body->valid & OBD_MD_FLEASIZE) &&
1113 !(body->valid & OBD_MD_FLDIREA))
1114 body->valid |= (OBD_MD_FLSIZE | OBD_MD_FLBLOCKS |
1115 OBD_MD_FLATIME | OBD_MD_FLMTIME);
1116 } else if (S_ISLNK(inode->i_mode) &&
1117 (reqbody->valid & OBD_MD_LINKNAME) != 0) {
1118 rc = mds_pack_link(dentry, req, body, reply_off);
1119 } else if (reqbody->valid & OBD_MD_FLEA) {
1120 rc = mds_pack_ea(dentry, req, body, req_off, reply_off);
1121 } else if (reqbody->valid & OBD_MD_FLEALIST) {
1122 rc = mds_pack_ealist(dentry, req, body, reply_off);
1125 if (reqbody->valid & OBD_MD_FLACL_ACCESS) {
1126 int inc = (reqbody->valid & OBD_MD_FLEASIZE) ? 2 : 1;
1127 rc = mds_pack_acl(obd, req->rq_repmsg, reply_off + inc,
1132 mds_body_do_reverse_map(med, body);
1137 static int mds_getattr_pack_msg_cf(struct ptlrpc_request *req,
1138 struct dentry *dentry,
1141 int rc = 0, size[1] = {sizeof(struct mds_body)};
1144 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_GETATTR_PACK)) {
1145 CERROR("failed MDS_GETATTR_PACK test\n");
1146 req->rq_status = -ENOMEM;
1150 rc = lustre_pack_reply(req, 1, size, NULL);
1152 CERROR("lustre_pack_reply failed: rc %d\n", rc);
1153 GOTO(out, req->rq_status = rc);
1161 static int mds_getattr_pack_msg(struct ptlrpc_request *req, struct dentry *de,
1164 struct inode *inode = de->d_inode;
1165 struct mds_obd *mds = mds_req2mds(req);
1166 struct mds_body *body;
1167 int rc = 0, size[4] = {sizeof(*body)}, bufcount = 1;
1170 body = lustre_msg_buf(req->rq_reqmsg, offset, sizeof(*body));
1171 LASSERT(body != NULL); /* checked by caller */
1172 LASSERT_REQSWABBED(req, offset); /* swabbed by caller */
1174 if ((S_ISREG(inode->i_mode) && (body->valid & OBD_MD_FLEASIZE)) ||
1175 (S_ISDIR(inode->i_mode) && (body->valid & OBD_MD_FLDIREA))) {
1178 down(&inode->i_sem);
1179 rc = fsfilt_get_md(req->rq_export->exp_obd, inode, NULL, 0,
1180 ((body->valid & OBD_MD_MEA) ? EA_MEA : EA_LOV));
1183 if (rc != -ENODATA && rc != -EOPNOTSUPP)
1184 CERROR("error getting inode %lu MD: rc = %d\n",
1187 } else if (rc > mds->mds_max_mdsize) {
1189 CERROR("MD size %d larger than maximum possible %u\n",
1190 rc, mds->mds_max_mdsize);
1192 size[bufcount] = rc;
1195 } else if (S_ISLNK(inode->i_mode) && (body->valid & OBD_MD_LINKNAME)) {
1196 if (inode->i_size + 1 != body->eadatasize)
1197 CERROR("symlink size: %Lu, reply space: %d\n",
1198 inode->i_size + 1, body->eadatasize);
1199 size[bufcount] = min_t(int, inode->i_size+1, body->eadatasize);
1201 CDEBUG(D_INODE, "symlink size: %Lu, reply space: %d\n",
1202 inode->i_size + 1, body->eadatasize);
1203 } else if ((body->valid & OBD_MD_FLEA)) {
1204 char *ea_name = lustre_msg_string(req->rq_reqmsg,
1207 if (inode->i_op && inode->i_op->getxattr)
1208 rc = inode->i_op->getxattr(de, ea_name, NULL, 0);
1211 if (rc != -ENODATA && rc != -EOPNOTSUPP)
1212 CERROR("error getting inode %lu EA: rc = %d\n",
1216 size[bufcount] = min_t(int, body->eadatasize, rc);
1219 } else if (body->valid & OBD_MD_FLEALIST) {
1221 if (inode->i_op && inode->i_op->getxattr)
1222 rc = inode->i_op->listxattr(de, NULL, 0);
1225 if (rc != -ENODATA && rc != -EOPNOTSUPP)
1226 CERROR("error getting inode %lu EA: rc = %d\n",
1230 size[bufcount] = min_t(int, body->eadatasize, rc);
1235 /* may co-exist with OBD_MD_FLEASIZE */
1236 if (body->valid & OBD_MD_FLACL_ACCESS) {
1237 size[bufcount++] = 4;
1238 size[bufcount++] = xattr_acl_size(LL_ACL_MAX_ENTRIES);
1241 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_GETATTR_PACK)) {
1242 CERROR("failed MDS_GETATTR_PACK test\n");
1243 req->rq_status = -ENOMEM;
1244 GOTO(out, rc = -ENOMEM);
1247 rc = lustre_pack_reply(req, bufcount, size, NULL);
1249 CERROR("out of memory\n");
1250 GOTO(out, req->rq_status = rc);
1258 int mds_check_mds_num(struct obd_device *obd, struct inode *inode,
1259 char *name, int namelen)
1261 struct mea *mea = NULL;
1262 int mea_size, rc = 0;
1265 rc = mds_md_get_attr(obd, inode, &mea, &mea_size);
1270 * dir is already splitted, check if requested filename should
1271 * live at this MDS or at another one.
1273 int i = mea_name2idx(mea, name, namelen - 1);
1274 if (mea->mea_master != id_group(&mea->mea_ids[i])) {
1276 "inapropriate MDS(%d) for %s. should be "
1277 "%lu(%d)\n", mea->mea_master, name,
1278 (unsigned long)id_group(&mea->mea_ids[i]), i);
1284 OBD_FREE(mea, mea_size);
1288 static int mds_getattr_lock(struct ptlrpc_request *req, int offset,
1289 struct lustre_handle *child_lockh, int child_part)
1291 struct obd_device *obd = req->rq_export->exp_obd;
1292 struct mds_obd *mds = &obd->u.mds;
1293 struct ldlm_reply *rep = NULL;
1294 struct lvfs_run_ctxt saved;
1295 struct mds_req_sec_desc *rsd;
1296 struct mds_body *body;
1297 struct dentry *dparent = NULL, *dchild = NULL;
1298 struct lvfs_ucred uc = {NULL, NULL,};
1299 struct lustre_handle parent_lockh[2] = {{0}, {0}};
1300 unsigned int namesize;
1301 int rc = 0, cleanup_phase = 0, resent_req = 0, update_mode, reply_offset;
1305 LASSERT(!strcmp(obd->obd_type->typ_name, LUSTRE_MDS_NAME));
1306 MD_COUNTER_INCREMENT(obd, getattr_lock);
1308 rsd = lustre_swab_mds_secdesc(req, MDS_REQ_SECDESC_OFF);
1310 CERROR("Can't unpack security desc\n");
1314 /* swab now, before anyone looks inside the request. */
1315 body = lustre_swab_reqbuf(req, offset, sizeof(*body),
1316 lustre_swab_mds_body);
1318 CERROR("Can't swab mds_body\n");
1319 GOTO(cleanup, rc = -EFAULT);
1322 LASSERT_REQSWAB(req, offset + 1);
1323 name = lustre_msg_string(req->rq_reqmsg, offset + 1, 0);
1325 CERROR("Can't unpack name\n");
1326 GOTO(cleanup, rc = -EFAULT);
1328 namesize = req->rq_reqmsg->buflens[offset + 1];
1330 /* namesize less than 2 means we have empty name, probably came from
1331 revalidate by cfid, so no point in having name to be set */
1335 LASSERT (offset == 1 || offset == 3);
1337 rep = lustre_msg_buf(req->rq_repmsg, 0, sizeof (*rep));
1343 rc = mds_init_ucred(&uc, req, rsd);
1348 push_ctxt(&saved, &obd->obd_lvfs_ctxt, &uc);
1349 cleanup_phase = 1; /* kernel context */
1350 intent_set_disposition(rep, DISP_LOOKUP_EXECD);
1352 LASSERT(namesize > 0);
1353 if (child_lockh->cookie != 0) {
1354 LASSERT(lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT);
1359 if (body->valid == OBD_MD_FLID) {
1360 struct mds_body *mds_reply;
1361 int size = sizeof(*mds_reply);
1365 dparent = mds_id2dentry(obd, &body->id1, NULL);
1366 if (IS_ERR(dparent)) {
1367 rc = PTR_ERR(dparent);
1372 * the user requested ONLY the inode number, so do a raw lookup.
1374 rc = lustre_pack_reply(req, 1, &size, NULL);
1376 CERROR("out of memory\n");
1380 dir = dparent->d_inode;
1381 LASSERT(dir->i_op->lookup_raw != NULL);
1382 rc = dir->i_op->lookup_raw(dir, name, namesize - 1, &inum);
1384 mds_reply = lustre_msg_buf(req->rq_repmsg, 0,
1385 sizeof(*mds_reply));
1387 id_ino(&mds_reply->id1) = inum;
1388 mds_reply->valid = OBD_MD_FLID;
1393 if (resent_req == 0) {
1394 LASSERT(id_fid(&body->id1) != 0);
1396 rc = mds_get_parent_child_locked(obd, mds, &body->id1,
1397 parent_lockh, &dparent,
1399 MDS_INODELOCK_UPDATE,
1402 child_lockh, &dchild,
1403 LCK_PR, child_part);
1407 cleanup_phase = 2; /* dchild, dparent, locks */
1410 * let's make sure this name should leave on this mds
1413 rc = mds_check_mds_num(obd, dparent->d_inode, name, namesize);
1417 /* we have no dentry here, drop LOOKUP bit */
1418 /* FIXME: we need MDS_INODELOCK_LOOKUP or not. */
1419 child_part &= ~MDS_INODELOCK_LOOKUP;
1420 CDEBUG(D_OTHER, "%s: retrieve attrs for "DLID4"\n",
1421 obd->obd_name, OLID4(&body->id1));
1423 dchild = mds_id2locked_dentry(obd, &body->id1, NULL,
1424 LCK_PR, parent_lockh,
1427 MDS_INODELOCK_UPDATE);
1428 if (IS_ERR(dchild)) {
1429 CERROR("can't find inode with id "DLID4", err = %d\n",
1430 OLID4(&body->id1), (int)PTR_ERR(dchild));
1431 GOTO(cleanup, rc = PTR_ERR(dchild));
1433 memcpy(child_lockh, parent_lockh, sizeof(parent_lockh[0]));
1436 struct ldlm_lock *granted_lock;
1438 DEBUG_REQ(D_DLMTRACE, req, "resent, not enqueuing new locks");
1439 granted_lock = ldlm_handle2lock(child_lockh);
1441 LASSERTF(granted_lock != NULL, LPU64"/%lu lockh "LPX64"\n",
1442 id_fid(&body->id1), (unsigned long)id_group(&body->id1),
1443 child_lockh->cookie);
1446 /* usual named request */
1447 dparent = mds_id2dentry(obd, &body->id1, NULL);
1448 LASSERT(!IS_ERR(dparent));
1449 dchild = ll_lookup_one_len(name, dparent, namesize - 1);
1450 LASSERT(!IS_ERR(dchild));
1452 /* client wants to get attr. by id */
1453 dchild = mds_id2dentry(obd, &body->id1, NULL);
1454 LASSERT(!IS_ERR(dchild));
1456 LDLM_LOCK_PUT(granted_lock);
1459 cleanup_phase = 2; /* dchild, dparent, locks */
1461 if (!DENTRY_VALID(dchild)) {
1462 intent_set_disposition(rep, DISP_LOOKUP_NEG);
1464 * in the intent case, the policy clears this error: the
1465 * disposition is enough.
1470 intent_set_disposition(rep, DISP_LOOKUP_POS);
1473 if (req->rq_repmsg == NULL) {
1474 if (dchild->d_flags & DCACHE_CROSS_REF)
1475 rc = mds_getattr_pack_msg_cf(req, dchild, offset);
1477 rc = mds_getattr_pack_msg(req, dchild, offset);
1479 CERROR ("mds_getattr_pack_msg: %d\n", rc);
1484 rc = mds_getattr_internal(obd, dchild, req, offset, body, reply_offset);
1485 GOTO(cleanup, rc); /* returns the lock to the client */
1488 switch (cleanup_phase) {
1490 if (resent_req == 0) {
1491 if (rc && DENTRY_VALID(dchild))
1492 ldlm_lock_decref(child_lockh, LCK_PR);
1494 ldlm_lock_decref(parent_lockh, LCK_PR);
1496 if (parent_lockh[1].cookie != 0)
1497 ldlm_lock_decref(parent_lockh + 1, update_mode);
1504 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, &uc);
1506 mds_exit_ucred(&uc);
1511 static int mds_getattr(struct ptlrpc_request *req, int offset)
1513 struct obd_device *obd = req->rq_export->exp_obd;
1514 struct lvfs_run_ctxt saved;
1516 struct mds_req_sec_desc *rsd;
1517 struct mds_body *body;
1518 struct lvfs_ucred uc = {NULL, NULL,};
1522 MD_COUNTER_INCREMENT(obd, getattr);
1524 rsd = lustre_swab_mds_secdesc(req, MDS_REQ_SECDESC_OFF);
1526 CERROR("Can't unpack security desc\n");
1530 body = lustre_swab_reqbuf(req, offset, sizeof(*body),
1531 lustre_swab_mds_body);
1533 CERROR ("Can't unpack body\n");
1537 rc = mds_init_ucred(&uc, req, rsd);
1539 mds_exit_ucred(&uc);
1543 push_ctxt(&saved, &obd->obd_lvfs_ctxt, &uc);
1544 de = mds_id2dentry(obd, &body->id1, NULL);
1546 rc = req->rq_status = PTR_ERR(de);
1550 rc = mds_getattr_pack_msg(req, de, offset);
1552 CERROR("mds_getattr_pack_msg: %d\n", rc);
1556 req->rq_status = mds_getattr_internal(obd, de, req, offset, body, 0);
1561 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, &uc);
1562 mds_exit_ucred(&uc);
1566 static int mds_obd_statfs(struct obd_device *obd, struct obd_statfs *osfs,
1567 unsigned long max_age)
1572 spin_lock(&obd->obd_osfs_lock);
1573 rc = fsfilt_statfs(obd, obd->u.mds.mds_sb, max_age);
1575 memcpy(osfs, &obd->obd_osfs, sizeof(*osfs));
1576 spin_unlock(&obd->obd_osfs_lock);
1581 static int mds_statfs(struct ptlrpc_request *req)
1583 struct obd_device *obd = req->rq_export->exp_obd;
1584 int rc, size = sizeof(struct obd_statfs);
1587 /* This will trigger a watchdog timeout */
1588 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_STATFS_LCW_SLEEP,
1589 (MDS_SERVICE_WATCHDOG_TIMEOUT / 1000) + 1);
1591 rc = lustre_pack_reply(req, 1, &size, NULL);
1592 if (rc || OBD_FAIL_CHECK(OBD_FAIL_MDS_STATFS_PACK)) {
1593 CERROR("mds: statfs lustre_pack_reply failed: rc = %d\n", rc);
1597 OBD_COUNTER_INCREMENT(obd, statfs);
1599 /* We call this so that we can cache a bit - 1 jiffie worth */
1600 rc = mds_obd_statfs(obd, lustre_msg_buf(req->rq_repmsg, 0, size),
1603 CERROR("mds_obd_statfs failed: rc %d\n", rc);
1609 req->rq_status = rc;
1613 static int mds_sync(struct ptlrpc_request *req, int offset)
1615 struct obd_device *obd = req->rq_export->exp_obd;
1616 struct mds_obd *mds = &obd->u.mds;
1617 struct mds_body *body;
1618 int rc, size = sizeof(*body);
1621 body = lustre_swab_reqbuf(req, offset, sizeof(*body),
1622 lustre_swab_mds_body);
1624 GOTO(out, rc = -EPROTO);
1626 rc = lustre_pack_reply(req, 1, &size, NULL);
1627 if (rc || OBD_FAIL_CHECK(OBD_FAIL_MDS_SYNC_PACK)) {
1628 CERROR("fsync lustre_pack_reply failed: rc = %d\n", rc);
1632 if (id_ino(&body->id1) == 0) {
1633 /* an id of zero is taken to mean "sync whole filesystem" */
1634 rc = fsfilt_sync(obd, mds->mds_sb);
1638 /* just any file to grab fsync method - "file" arg unused */
1639 struct file *file = mds->mds_rcvd_filp;
1640 struct mds_body *rep_body;
1643 de = mds_id2dentry(obd, &body->id1, NULL);
1645 GOTO(out, rc = PTR_ERR(de));
1647 rc = file->f_op->fsync(NULL, de, 1);
1651 rep_body = lustre_msg_buf(req->rq_repmsg, 0, sizeof(*rep_body));
1652 mds_pack_inode2body(obd, rep_body, de->d_inode,
1653 (body->valid & OBD_MD_FID) ? 1 : 0);
1659 req->rq_status = rc;
1663 /* mds_readpage does not take a DLM lock on the inode, because the client must
1664 * already have a PR lock.
1666 * If we were to take another one here, a deadlock will result, if another
1667 * thread is already waiting for a PW lock. */
1668 static int mds_readpage(struct ptlrpc_request *req, int offset)
1670 struct obd_device *obd = req->rq_export->exp_obd;
1671 struct vfsmount *mnt;
1674 struct mds_req_sec_desc *rsd;
1675 struct mds_body *body, *repbody;
1676 struct lvfs_run_ctxt saved;
1677 int rc, size = sizeof(*repbody);
1678 struct lvfs_ucred uc = {NULL, NULL,};
1681 rc = lustre_pack_reply(req, 1, &size, NULL);
1682 if (rc || OBD_FAIL_CHECK(OBD_FAIL_MDS_READPAGE_PACK)) {
1683 CERROR("mds: out of memory\n");
1684 GOTO(out, rc = -ENOMEM);
1687 rsd = lustre_swab_mds_secdesc(req, MDS_REQ_SECDESC_OFF);
1689 CERROR("Can't unpack security desc\n");
1690 GOTO (out, rc = -EFAULT);
1693 body = lustre_swab_reqbuf(req, offset, sizeof(*body),
1694 lustre_swab_mds_body);
1696 CERROR("Can't unpack body\n");
1697 GOTO (out, rc = -EFAULT);
1700 rc = mds_init_ucred(&uc, req, rsd);
1705 push_ctxt(&saved, &obd->obd_lvfs_ctxt, &uc);
1706 de = mds_id2dentry(obd, &body->id1, &mnt);
1708 GOTO(out_pop, rc = PTR_ERR(de));
1710 CDEBUG(D_INODE, "ino %lu\n", de->d_inode->i_ino);
1712 file = dentry_open(de, mnt, O_RDONLY | O_LARGEFILE);
1713 /* note: in case of an error, dentry_open puts dentry */
1715 GOTO(out_pop, rc = PTR_ERR(file));
1717 /* body->size is actually the offset -eeb */
1718 if ((body->size & (de->d_inode->i_blksize - 1)) != 0) {
1719 CERROR("offset "LPU64" not on a block boundary of %lu\n",
1720 body->size, de->d_inode->i_blksize);
1721 GOTO(out_file, rc = -EFAULT);
1724 /* body->nlink is actually the #bytes to read -eeb */
1725 if (body->nlink & (de->d_inode->i_blksize - 1)) {
1726 CERROR("size %u is not multiple of blocksize %lu\n",
1727 body->nlink, de->d_inode->i_blksize);
1728 GOTO(out_file, rc = -EFAULT);
1731 repbody = lustre_msg_buf(req->rq_repmsg, 0, sizeof (*repbody));
1732 repbody->size = file->f_dentry->d_inode->i_size;
1733 repbody->valid = OBD_MD_FLSIZE;
1735 /* to make this asynchronous make sure that the handling function
1736 doesn't send a reply when this function completes. Instead a
1737 callback function would send the reply */
1738 /* body->size is actually the offset -eeb */
1739 rc = mds_sendpage(req, file, body->size, body->nlink);
1743 filp_close(file, 0);
1745 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, &uc);
1747 mds_exit_ucred(&uc);
1748 req->rq_status = rc;
1752 /* update master MDS ID, which is stored in local inode EA. */
1753 int mds_update_mid(struct obd_device *obd, struct lustre_id *id,
1754 void *data, int data_len)
1756 struct mds_obd *mds = &obd->u.mds;
1757 struct dentry *dentry;
1765 dentry = mds_id2dentry(obd, id, NULL);
1767 GOTO(out, rc = PTR_ERR(dentry));
1769 if (!dentry->d_inode) {
1770 CERROR("Can't find object "DLID4".\n",
1772 GOTO(out_dentry, rc = -EINVAL);
1775 handle = fsfilt_start(obd, dentry->d_inode,
1776 FSFILT_OP_SETATTR, NULL);
1778 GOTO(out_dentry, rc = PTR_ERR(handle));
1780 rc = mds_update_inode_mid(obd, dentry->d_inode, handle,
1781 (struct lustre_id *)data);
1783 CERROR("Can't update inode "DLID4" master id, "
1784 "error = %d.\n", OLID4(id), rc);
1785 GOTO(out_commit, rc);
1790 fsfilt_commit(obd, mds->mds_sb, dentry->d_inode,
1797 EXPORT_SYMBOL(mds_update_mid);
1799 /* read master MDS ID, which is stored in local inode EA. */
1800 int mds_read_mid(struct obd_device *obd, struct lustre_id *id,
1801 void *data, int data_len)
1803 struct dentry *dentry;
1810 dentry = mds_id2dentry(obd, id, NULL);
1812 GOTO(out, rc = PTR_ERR(dentry));
1814 if (!dentry->d_inode) {
1815 CERROR("Can't find object "DLID4".\n",
1817 GOTO(out_dentry, rc = -EINVAL);
1820 down(&dentry->d_inode->i_sem);
1821 rc = mds_read_inode_mid(obd, dentry->d_inode,
1822 (struct lustre_id *)data);
1823 up(&dentry->d_inode->i_sem);
1825 CERROR("Can't read inode "DLID4" master id, "
1826 "error = %d.\n", OLID4(id), rc);
1827 GOTO(out_dentry, rc);
1836 EXPORT_SYMBOL(mds_read_mid);
1838 int mds_reint(struct ptlrpc_request *req, int offset,
1839 struct lustre_handle *lockh)
1841 struct mds_update_record *rec;
1842 struct mds_req_sec_desc *rsd;
1846 OBD_ALLOC(rec, sizeof(*rec));
1850 rsd = lustre_swab_mds_secdesc(req, MDS_REQ_SECDESC_OFF);
1852 CERROR("Can't unpack security desc\n");
1853 GOTO(out, rc = -EFAULT);
1856 rc = mds_update_unpack(req, offset, rec);
1857 if (rc || OBD_FAIL_CHECK(OBD_FAIL_MDS_REINT_UNPACK)) {
1858 CERROR("invalid record\n");
1859 GOTO(out, req->rq_status = -EINVAL);
1862 rc = mds_init_ucred(&rec->ur_uc, req, rsd);
1867 /* rc will be used to interrupt a for loop over multiple records */
1868 rc = mds_reint_rec(rec, offset, req, lockh);
1871 mds_exit_ucred(&rec->ur_uc);
1872 OBD_FREE(rec, sizeof(*rec));
1876 static int mds_filter_recovery_request(struct ptlrpc_request *req,
1877 struct obd_device *obd, int *process)
1879 switch (req->rq_reqmsg->opc) {
1880 case MDS_CONNECT: /* This will never get here, but for completeness. */
1881 case OST_CONNECT: /* This will never get here, but for completeness. */
1882 case MDS_DISCONNECT:
1883 case OST_DISCONNECT:
1888 case MDS_SYNC: /* used in unmounting */
1893 *process = target_queue_recovery_request(req, obd);
1897 DEBUG_REQ(D_ERROR, req, "not permitted during recovery");
1899 /* XXX what should we set rq_status to here? */
1900 req->rq_status = -EAGAIN;
1901 RETURN(ptlrpc_error(req));
1905 static char *reint_names[] = {
1906 [REINT_SETATTR] "setattr",
1907 [REINT_CREATE] "create",
1908 [REINT_LINK] "link",
1909 [REINT_UNLINK] "unlink",
1910 [REINT_RENAME] "rename",
1911 [REINT_OPEN] "open",
1914 #define FILTER_VALID_FLAGS (OBD_MD_FLTYPE | OBD_MD_FLMODE | OBD_MD_FLGENER | \
1915 OBD_MD_FLSIZE | OBD_MD_FLBLOCKS | OBD_MD_FLBLKSZ| \
1916 OBD_MD_FLATIME | OBD_MD_FLMTIME | OBD_MD_FLCTIME| \
1919 static void reconstruct_create(struct ptlrpc_request *req)
1921 struct mds_export_data *med = &req->rq_export->exp_mds_data;
1922 struct mds_client_data *mcd = med->med_mcd;
1923 struct dentry *dentry;
1924 struct ost_body *body;
1925 struct lustre_id id;
1929 /* copy rc, transno and disp; steal locks */
1930 mds_req_from_mcd(req, mcd);
1931 if (req->rq_status) {
1939 id_ino(&id) = mcd->mcd_last_data;
1940 LASSERT(id_ino(&id) != 0);
1942 dentry = mds_id2dentry(req2obd(req), &id, NULL);
1943 if (IS_ERR(dentry)) {
1944 CERROR("can't find inode "LPU64"\n", id_ino(&id));
1945 req->rq_status = PTR_ERR(dentry);
1950 CWARN("reconstruct reply for x"LPU64" (remote ino) "LPU64" -> %lu/%u\n",
1951 req->rq_xid, id_ino(&id), dentry->d_inode->i_ino,
1952 dentry->d_inode->i_generation);
1954 body = lustre_msg_buf(req->rq_repmsg, 0, sizeof (*body));
1955 obdo_from_inode(&body->oa, dentry->d_inode, FILTER_VALID_FLAGS);
1956 body->oa.o_id = dentry->d_inode->i_ino;
1957 body->oa.o_generation = dentry->d_inode->i_generation;
1958 body->oa.o_valid |= OBD_MD_FLID | OBD_MD_FLGENER;
1960 down(&dentry->d_inode->i_sem);
1961 rc = mds_read_inode_sid(req2obd(req), dentry->d_inode, &id);
1962 up(&dentry->d_inode->i_sem);
1964 CERROR("Can't read inode self id, inode %lu, "
1965 "rc %d\n", dentry->d_inode->i_ino, rc);
1969 body->oa.o_fid = id_fid(&id);
1970 body->oa.o_mds = id_group(&id);
1976 static int mds_inode_init_acl(struct obd_device *obd, void *handle,
1977 struct dentry *de, void *xattr, int xattr_size)
1979 struct inode *inode = de->d_inode;
1980 struct posix_acl *acl;
1987 LASSERT(xattr_size > 0);
1989 if (!inode->i_op->getxattr || !inode->i_op->setxattr) {
1990 CERROR("backend fs dosen't support xattr\n");
1994 /* set default acl */
1995 if (S_ISDIR(inode->i_mode)) {
1996 rc = inode->i_op->setxattr(de, XATTR_NAME_ACL_DEFAULT,
1997 xattr, xattr_size, 0);
1999 CERROR("set default acl err: %d\n", rc);
2004 /* set access acl */
2005 acl = posix_acl_from_xattr(xattr, xattr_size);
2006 if (acl == NULL || IS_ERR(acl)) {
2007 CERROR("insane attr data\n");
2008 return PTR_ERR(acl);
2011 if (posix_acl_valid(acl)) {
2012 CERROR("default acl not valid: %d\n", rc);
2017 mode = inode->i_mode;
2018 rc = posix_acl_create_masq(acl, &mode);
2020 CERROR("create masq err %d\n", rc);
2024 if (inode->i_mode != mode) {
2025 struct iattr iattr = { .ia_valid = ATTR_MODE,
2029 rc2 = fsfilt_setattr(obd, de, handle, &iattr, 0);
2031 CERROR("setattr mode err: %d\n", rc2);
2038 /* we didn't change acl except mode bits of some
2039 * entries, so should be fit into original size.
2041 rc = posix_acl_to_xattr(acl, xattr, xattr_size);
2044 rc = inode->i_op->setxattr(de, XATTR_NAME_ACL_ACCESS,
2045 xattr, xattr_size, 0);
2047 CERROR("set access acl err: %d\n", rc);
2050 posix_acl_release(acl);
2054 static int mdt_obj_create(struct ptlrpc_request *req)
2056 struct obd_device *obd = req->rq_export->exp_obd;
2057 struct mds_obd *mds = &obd->u.mds;
2058 struct ost_body *body, *repbody;
2061 char idname[LL_ID_NAMELEN];
2062 int size = sizeof(*repbody);
2063 struct inode *parent_inode;
2064 struct lvfs_run_ctxt saved;
2065 int rc, cleanup_phase = 0;
2066 struct dentry *new = NULL;
2067 struct dentry_params dp;
2068 int mealen, flags = 0;
2069 struct lvfs_ucred uc;
2070 struct lustre_id id;
2072 void *handle = NULL;
2073 unsigned long cr_inum = 0;
2076 DEBUG_REQ(D_HA, req, "create remote object");
2077 parent_inode = mds->mds_unnamed_dir->d_inode;
2079 body = lustre_swab_reqbuf(req, 0, sizeof(*body),
2080 lustre_swab_ost_body);
2084 /* acl data is packed transparently, no swab here */
2085 LASSERT(req->rq_reqmsg->bufcount >= 2);
2086 acl_size = req->rq_reqmsg->buflens[1];
2088 acl = lustre_msg_buf(req->rq_reqmsg, 1, acl_size);
2090 CERROR("No default acl buf?\n");
2095 rc = lustre_pack_reply(req, 1, &size, NULL);
2099 MDS_CHECK_RESENT(req, reconstruct_create(req));
2102 uc.luc_ginfo = NULL;
2103 uc.luc_uid = body->oa.o_uid;
2104 uc.luc_gid = body->oa.o_gid;
2105 uc.luc_fsuid = body->oa.o_uid;
2106 uc.luc_fsgid = body->oa.o_gid;
2108 push_ctxt(&saved, &obd->obd_lvfs_ctxt, &uc);
2109 repbody = lustre_msg_buf(req->rq_repmsg, 0, sizeof(*repbody));
2111 /* in REPLAY case inum should be given (client or other MDS fills it) */
2112 if (body->oa.o_id && ((body->oa.o_flags & OBD_FL_RECREATE_OBJS) ||
2113 (lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY))) {
2115 * this is re-create request from MDS holding directory name.
2116 * we have to lookup given ino/gen first. if it exists (good
2117 * case) then there is nothing to do. if it does not then we
2118 * have to recreate it.
2120 id_ino(&id) = body->oa.o_id;
2121 id_gen(&id) = body->oa.o_generation;
2123 new = mds_id2dentry(obd, &id, NULL);
2124 if (!IS_ERR(new) && new->d_inode) {
2125 struct lustre_id sid;
2127 CWARN("mkdir() repairing is on its way: %lu/%lu\n",
2128 (unsigned long)id_ino(&id), (unsigned long)id_gen(&id));
2130 obdo_from_inode(&repbody->oa, new->d_inode,
2131 FILTER_VALID_FLAGS);
2133 repbody->oa.o_id = new->d_inode->i_ino;
2134 repbody->oa.o_generation = new->d_inode->i_generation;
2135 repbody->oa.o_valid |= OBD_MD_FLID | OBD_MD_FLGENER;
2138 down(&new->d_inode->i_sem);
2139 rc = mds_read_inode_sid(obd, new->d_inode, &sid);
2140 up(&new->d_inode->i_sem);
2142 CERROR("Can't read inode self id "
2143 "inode %lu, rc %d.\n",
2144 new->d_inode->i_ino, rc);
2148 repbody->oa.o_fid = id_fid(&sid);
2149 repbody->oa.o_mds = id_group(&sid);
2150 LASSERT(id_fid(&sid) != 0);
2153 * here we could use fid passed in body->oa.o_fid and
2154 * thus avoid mds_read_inode_sid().
2156 cr_inum = new->d_inode->i_ino;
2157 GOTO(cleanup, rc = 0);
2161 down(&parent_inode->i_sem);
2162 handle = fsfilt_start(obd, parent_inode, FSFILT_OP_MKDIR, NULL);
2163 if (IS_ERR(handle)) {
2164 up(&parent_inode->i_sem);
2165 CERROR("fsfilt_start() failed, rc = %d\n",
2166 (int)PTR_ERR(handle));
2167 GOTO(cleanup, rc = PTR_ERR(handle));
2169 cleanup_phase = 1; /* transaction */
2172 rc = sprintf(idname, "%u.%u", ll_insecure_random_int(), current->pid);
2173 new = lookup_one_len(idname, mds->mds_unnamed_dir, rc);
2175 CERROR("%s: can't lookup new inode (%s) for mkdir: %d\n",
2176 obd->obd_name, idname, (int) PTR_ERR(new));
2177 fsfilt_commit(obd, mds->mds_sb, new->d_inode, handle, 0);
2178 up(&parent_inode->i_sem);
2179 RETURN(PTR_ERR(new));
2180 } else if (new->d_inode) {
2181 CERROR("%s: name exists. repeat\n", obd->obd_name);
2185 new->d_fsdata = (void *)&dp;
2189 if ((lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY) ||
2190 (body->oa.o_flags & OBD_FL_RECREATE_OBJS)) {
2191 LASSERT(body->oa.o_id != 0);
2192 dp.p_inum = body->oa.o_id;
2193 DEBUG_REQ(D_HA, req, "replay create obj %lu/%lu",
2194 (unsigned long)body->oa.o_id,
2195 (unsigned long)body->oa.o_generation);
2198 rc = vfs_mkdir(parent_inode, new, body->oa.o_mode);
2201 rc = mds_inode_init_acl(obd, handle, new,
2204 up(&parent_inode->i_sem);
2208 if ((body->oa.o_flags & OBD_FL_RECREATE_OBJS) ||
2209 lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY) {
2210 new->d_inode->i_generation = body->oa.o_generation;
2211 mark_inode_dirty(new->d_inode);
2214 * avoiding asserts in cache flush case, as
2215 * @body->oa.o_id should be zero.
2217 if (body->oa.o_id) {
2218 LASSERTF(body->oa.o_id == new->d_inode->i_ino,
2219 "BUG 3550: failed to recreate obj "
2220 LPU64" -> %lu\n", body->oa.o_id,
2221 new->d_inode->i_ino);
2223 LASSERTF(body->oa.o_generation ==
2224 new->d_inode->i_generation,
2225 "BUG 3550: failed to recreate obj/gen "
2226 LPU64"/%u -> %lu/%u\n", body->oa.o_id,
2227 body->oa.o_generation,
2228 new->d_inode->i_ino,
2229 new->d_inode->i_generation);
2233 obdo_from_inode(&repbody->oa, new->d_inode, FILTER_VALID_FLAGS);
2234 repbody->oa.o_id = new->d_inode->i_ino;
2235 repbody->oa.o_generation = new->d_inode->i_generation;
2236 repbody->oa.o_valid |= OBD_MD_FLID | OBD_MD_FLGENER | OBD_MD_FID;
2238 if ((body->oa.o_flags & OBD_FL_RECREATE_OBJS) ||
2239 lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY) {
2240 id_group(&id) = mds->mds_num;
2242 LASSERT(body->oa.o_fid != 0);
2243 id_fid(&id) = body->oa.o_fid;
2245 LASSERT(body->oa.o_id != 0);
2246 id_ino(&id) = repbody->oa.o_id;
2247 id_gen(&id) = repbody->oa.o_generation;
2249 down(&new->d_inode->i_sem);
2250 rc = mds_update_inode_sid(obd, new->d_inode, handle, &id);
2251 up(&new->d_inode->i_sem);
2254 * make sure, that fid is up-to-date.
2256 mds_set_last_fid(obd, id_fid(&id));
2259 * allocate new sid, as object is created from scratch
2260 * and this is not replay.
2262 down(&new->d_inode->i_sem);
2263 rc = mds_alloc_inode_sid(obd, new->d_inode, handle, &id);
2264 up(&new->d_inode->i_sem);
2267 CERROR("Can't update lustre ID for inode %lu, "
2268 "error = %d\n", new->d_inode->i_ino, rc);
2272 /* initializing o_fid after it is allocated. */
2273 repbody->oa.o_fid = id_fid(&id);
2274 repbody->oa.o_mds = id_group(&id);
2276 rc = fsfilt_del_dir_entry(obd, new);
2277 up(&parent_inode->i_sem);
2279 CERROR("can't remove name for object: %d\n", rc);
2283 cleanup_phase = 2; /* created directory object */
2285 CDEBUG(D_OTHER, "created dirobj: %lu/%lu mode %o\n",
2286 (unsigned long)new->d_inode->i_ino,
2287 (unsigned long)new->d_inode->i_generation,
2288 (unsigned)new->d_inode->i_mode);
2289 cr_inum = new->d_inode->i_ino;
2291 up(&parent_inode->i_sem);
2292 CERROR("%s: can't create dirobj: %d\n", obd->obd_name, rc);
2296 if (body->oa.o_valid & OBD_MD_FLID) {
2297 /* this is new object for splitted dir. We have to prevent
2298 * recursive splitting on it -bzzz */
2299 mealen = obd_size_diskmd(mds->mds_md_exp, NULL);
2301 OBD_ALLOC(mea, mealen);
2303 GOTO(cleanup, rc = -ENOMEM);
2305 mea->mea_magic = MEA_MAGIC_ALL_CHARS;
2306 mea->mea_master = 0;
2309 down(&new->d_inode->i_sem);
2310 rc = fsfilt_set_md(obd, new->d_inode, handle,
2311 mea, mealen, EA_MEA);
2312 up(&new->d_inode->i_sem);
2314 CERROR("fsfilt_set_md() failed, "
2317 OBD_FREE(mea, mealen);
2319 CDEBUG(D_OTHER, "%s: mark non-splittable %lu/%u - %d\n",
2320 obd->obd_name, new->d_inode->i_ino,
2321 new->d_inode->i_generation, flags);
2322 } else if (body->oa.o_easize) {
2323 /* we pass LCK_EX to split routine to signal that we have
2324 * exclusive access to the directory. simple because nobody
2325 * knows it already exists -bzzz */
2326 rc = mds_try_to_split_dir(obd, new, NULL,
2327 body->oa.o_easize, LCK_EX);
2329 CERROR("Can't split directory %lu, error = %d.\n",
2330 new->d_inode->i_ino, rc);
2338 switch (cleanup_phase) {
2339 case 2: /* object has been created, but we'll may want to replay it later */
2341 ptlrpc_require_repack(req);
2342 case 1: /* transaction */
2343 rc = mds_finish_transno(mds, parent_inode, handle,
2348 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, &uc);
2352 static int mdt_get_info(struct ptlrpc_request *req)
2354 struct obd_export *exp = req->rq_export;
2359 key = lustre_msg_buf(req->rq_reqmsg, 0, 1);
2361 DEBUG_REQ(D_HA, req, "no get_info key");
2364 keylen = req->rq_reqmsg->buflens[0];
2366 if ((keylen < strlen("mdsize") || strcmp(key, "mdsize") != 0) &&
2367 (keylen < strlen("mdsnum") || strcmp(key, "mdsnum") != 0) &&
2368 (keylen < strlen("rootid") || strcmp(key, "rootid") != 0))
2371 if (keylen >= strlen("rootid") && !strcmp(key, "rootid")) {
2372 struct lustre_id *reply;
2373 int size = sizeof(*reply);
2375 rc = lustre_pack_reply(req, 1, &size, NULL);
2379 reply = lustre_msg_buf(req->rq_repmsg, 0, size);
2380 rc = obd_get_info(exp, keylen, key, (__u32 *)&size, reply);
2383 int size = sizeof(*reply);
2385 rc = lustre_pack_reply(req, 1, &size, NULL);
2389 reply = lustre_msg_buf(req->rq_repmsg, 0, size);
2390 rc = obd_get_info(exp, keylen, key, (__u32 *)&size, reply);
2393 req->rq_repmsg->status = 0;
2397 static int mds_set_info(struct obd_export *exp, __u32 keylen,
2398 void *key, __u32 vallen, void *val)
2400 struct obd_device *obd;
2401 struct mds_obd *mds;
2405 obd = class_exp2obd(exp);
2407 CDEBUG(D_IOCTL, "invalid client cookie "LPX64"\n",
2408 exp->exp_handle.h_cookie);
2413 if (keylen >= strlen("mds_type") &&
2414 memcmp(key, "mds_type", keylen) == 0) {
2418 CDEBUG(D_IOCTL, "set mds type to %x\n", *(int*)val);
2420 mds->mds_obd_type = *(int*)val;
2421 group = FILTER_GROUP_FIRST_MDS + mds->mds_obd_type;
2422 valsize = sizeof(group);
2424 /* mds number has been changed, so the corresponding obdfilter
2425 * exp need to be changed too. */
2426 rc = obd_set_info(mds->mds_dt_exp, strlen("mds_conn"),
2427 "mds_conn", valsize, &group);
2430 CDEBUG(D_IOCTL, "invalid key\n");
2434 static int mdt_set_info(struct ptlrpc_request *req)
2437 struct obd_export *exp = req->rq_export;
2438 int keylen, rc = 0, vallen;
2441 key = lustre_msg_buf(req->rq_reqmsg, 0, 1);
2443 DEBUG_REQ(D_HA, req, "no set_info key");
2446 keylen = req->rq_reqmsg->buflens[0];
2448 if (keylen == strlen("mds_type") &&
2449 memcmp(key, "mds_type", keylen) == 0) {
2450 rc = lustre_pack_reply(req, 0, NULL, NULL);
2454 val = lustre_msg_buf(req->rq_reqmsg, 1, 0);
2455 vallen = req->rq_reqmsg->buflens[1];
2457 rc = obd_set_info(exp, keylen, key, vallen, val);
2458 req->rq_repmsg->status = 0;
2461 CDEBUG(D_IOCTL, "invalid key\n");
2465 static void mds_revoke_export_locks(struct obd_export *exp)
2467 struct ldlm_namespace *ns = exp->exp_obd->obd_namespace;
2468 struct list_head *locklist = &exp->exp_ldlm_data.led_held_locks;
2469 struct ldlm_lock *lock, *next;
2470 struct ldlm_lock_desc desc;
2472 if (!exp->u.eu_mds_data.med_remote)
2476 l_lock(&ns->ns_lock);
2477 list_for_each_entry_safe(lock, next, locklist, l_export_chain) {
2478 if (lock->l_req_mode != lock->l_granted_mode)
2481 LASSERT(lock->l_resource);
2482 if (lock->l_resource->lr_type != LDLM_IBITS &&
2483 lock->l_resource->lr_type != LDLM_PLAIN)
2486 if (lock->l_flags & LDLM_FL_AST_SENT)
2489 lock->l_flags |= LDLM_FL_AST_SENT;
2491 /* the desc just pretend to exclusive */
2492 ldlm_lock2desc(lock, &desc);
2493 desc.l_req_mode = LCK_EX;
2494 desc.l_granted_mode = 0;
2496 lock->l_blocking_ast(lock, &desc, NULL, LDLM_CB_BLOCKING);
2498 l_unlock(&ns->ns_lock);
2502 static int mds_msg_check_version(struct lustre_msg *msg)
2508 case MDS_DISCONNECT:
2510 rc = lustre_msg_check_version(msg, LUSTRE_OBD_VERSION);
2512 CERROR("bad opc %u version %08x, expecting %08x\n",
2513 msg->opc, msg->version, LUSTRE_OBD_VERSION);
2518 case MDS_GETATTR_LOCK:
2522 case MDS_DONE_WRITING:
2525 rc = lustre_msg_check_version(msg, LUSTRE_MDS_VERSION);
2527 CERROR("bad opc %u version %08x, expecting %08x\n",
2528 msg->opc, msg->version, LUSTRE_MDS_VERSION);
2532 case LDLM_BL_CALLBACK:
2533 case LDLM_CP_CALLBACK:
2534 rc = lustre_msg_check_version(msg, LUSTRE_DLM_VERSION);
2536 CERROR("bad opc %u version %08x, expecting %08x\n",
2537 msg->opc, msg->version, LUSTRE_DLM_VERSION);
2539 case OBD_LOG_CANCEL:
2540 case LLOG_ORIGIN_HANDLE_OPEN:
2541 case LLOG_ORIGIN_HANDLE_NEXT_BLOCK:
2542 case LLOG_ORIGIN_HANDLE_PREV_BLOCK:
2543 case LLOG_ORIGIN_HANDLE_READ_HEADER:
2544 case LLOG_ORIGIN_HANDLE_CLOSE:
2546 rc = lustre_msg_check_version(msg, LUSTRE_LOG_VERSION);
2548 CERROR("bad opc %u version %08x, expecting %08x\n",
2549 msg->opc, msg->version, LUSTRE_LOG_VERSION);
2555 rc = lustre_msg_check_version(msg, LUSTRE_OBD_VERSION);
2557 CERROR("bad opc %u version %08x, expecting %08x\n",
2558 msg->opc, msg->version, LUSTRE_OBD_VERSION);
2561 case SEC_INIT_CONTINUE:
2566 CERROR("MDS unknown opcode %d\n", msg->opc);
2574 int mds_handle(struct ptlrpc_request *req)
2576 int should_process, fail = OBD_FAIL_MDS_ALL_REPLY_NET;
2577 struct obd_device *obd = NULL;
2578 struct mds_obd *mds = NULL; /* quell gcc overwarning */
2582 OBD_FAIL_RETURN(OBD_FAIL_MDS_ALL_REQUEST_NET | OBD_FAIL_ONCE, 0);
2584 rc = mds_msg_check_version(req->rq_reqmsg);
2586 CERROR("MDS drop mal-formed request\n");
2590 /* Security opc should NOT trigger any recovery events */
2591 if (req->rq_reqmsg->opc == SEC_INIT ||
2592 req->rq_reqmsg->opc == SEC_INIT_CONTINUE) {
2593 if (!req->rq_export)
2596 mds_req_add_idmapping(req, &req->rq_export->exp_mds_data);
2597 mds_revoke_export_locks(req->rq_export);
2599 } else if (req->rq_reqmsg->opc == SEC_FINI) {
2600 if (!req->rq_export)
2603 mds_req_del_idmapping(req, &req->rq_export->exp_mds_data);
2604 mds_revoke_export_locks(req->rq_export);
2608 LASSERT(current->journal_info == NULL);
2609 /* XXX identical to OST */
2610 if (req->rq_reqmsg->opc != MDS_CONNECT) {
2611 struct mds_export_data *med;
2614 if (req->rq_export == NULL) {
2615 CERROR("operation %d on unconnected MDS from %s\n",
2616 req->rq_reqmsg->opc,
2618 req->rq_status = -ENOTCONN;
2619 GOTO(out, rc = -ENOTCONN);
2622 med = &req->rq_export->exp_mds_data;
2623 obd = req->rq_export->exp_obd;
2626 /* sanity check: if the xid matches, the request must
2627 * be marked as a resent or replayed */
2628 if (req->rq_xid == le64_to_cpu(med->med_mcd->mcd_last_xid) ||
2629 req->rq_xid == le64_to_cpu(med->med_mcd->mcd_last_close_xid)) {
2630 LASSERTF(lustre_msg_get_flags(req->rq_reqmsg) &
2631 (MSG_RESENT | MSG_REPLAY),
2632 "rq_xid "LPU64" matches last_xid, "
2633 "expected RESENT flag\n",
2636 /* else: note the opposite is not always true; a
2637 * RESENT req after a failover will usually not match
2638 * the last_xid, since it was likely never
2639 * committed. A REPLAYed request will almost never
2640 * match the last xid, however it could for a
2641 * committed, but still retained, open. */
2643 spin_lock_bh(&obd->obd_processing_task_lock);
2644 recovering = obd->obd_recovering;
2645 spin_unlock_bh(&obd->obd_processing_task_lock);
2647 rc = mds_filter_recovery_request(req, obd,
2649 if (rc || should_process == 0) {
2651 } else if (should_process < 0) {
2652 req->rq_status = should_process;
2653 rc = ptlrpc_error(req);
2659 switch (req->rq_reqmsg->opc) {
2661 DEBUG_REQ(D_INODE, req, "connect");
2662 OBD_FAIL_RETURN(OBD_FAIL_MDS_CONNECT_NET, 0);
2663 rc = target_handle_connect(req);
2665 struct mds_export_data *med;
2667 LASSERT(req->rq_export);
2668 med = &req->rq_export->u.eu_mds_data;
2669 mds_init_export_data(req, med);
2670 mds_req_add_idmapping(req, med);
2672 /* Now that we have an export, set mds. */
2673 obd = req->rq_export->exp_obd;
2674 mds = mds_req2mds(req);
2678 case MDS_DISCONNECT:
2679 DEBUG_REQ(D_INODE, req, "disconnect");
2680 OBD_FAIL_RETURN(OBD_FAIL_MDS_DISCONNECT_NET, 0);
2681 rc = target_handle_disconnect(req);
2682 req->rq_status = rc; /* superfluous? */
2686 DEBUG_REQ(D_INODE, req, "getstatus");
2687 OBD_FAIL_RETURN(OBD_FAIL_MDS_GETSTATUS_NET, 0);
2688 rc = mds_getstatus(req);
2692 DEBUG_REQ(D_INODE, req, "getattr");
2693 OBD_FAIL_RETURN(OBD_FAIL_MDS_GETATTR_NET, 0);
2694 rc = mds_getattr(req, MDS_REQ_REC_OFF);
2697 case MDS_GETATTR_LOCK: {
2698 struct lustre_handle lockh;
2699 DEBUG_REQ(D_INODE, req, "getattr_lock");
2700 OBD_FAIL_RETURN(OBD_FAIL_MDS_GETATTR_LOCK_NET, 0);
2702 /* If this request gets a reconstructed reply, we won't be
2703 * acquiring any new locks in mds_getattr_lock, so we don't
2707 rc = mds_getattr_lock(req, MDS_REQ_REC_OFF, &lockh,
2708 MDS_INODELOCK_UPDATE);
2709 /* this non-intent call (from an ioctl) is special */
2710 req->rq_status = rc;
2711 if (rc == 0 && lockh.cookie)
2712 ldlm_lock_decref(&lockh, LCK_PR);
2716 DEBUG_REQ(D_INODE, req, "statfs");
2717 OBD_FAIL_RETURN(OBD_FAIL_MDS_STATFS_NET, 0);
2718 rc = mds_statfs(req);
2722 DEBUG_REQ(D_INODE, req, "readpage");
2723 OBD_FAIL_RETURN(OBD_FAIL_MDS_READPAGE_NET, 0);
2724 rc = mds_readpage(req, MDS_REQ_REC_OFF);
2726 if (OBD_FAIL_CHECK_ONCE(OBD_FAIL_MDS_SENDPAGE)) {
2727 if (req->rq_reply_state) {
2728 lustre_free_reply_state (req->rq_reply_state);
2729 req->rq_reply_state = NULL;
2736 __u32 *opcp = lustre_msg_buf(req->rq_reqmsg, MDS_REQ_REC_OFF,
2739 int size[3] = {sizeof(struct mds_body), mds->mds_max_mdsize,
2740 mds->mds_max_cookiesize};
2743 /* NB only peek inside req now; mds_reint() will swab it */
2745 CERROR ("Can't inspect opcode\n");
2750 if (lustre_msg_swabbed (req->rq_reqmsg))
2753 DEBUG_REQ(D_INODE, req, "reint %d (%s)", opc,
2754 (opc < sizeof(reint_names) / sizeof(reint_names[0]) ||
2755 reint_names[opc] == NULL) ? reint_names[opc] :
2758 OBD_FAIL_RETURN(OBD_FAIL_MDS_REINT_NET, 0);
2760 if (opc == REINT_UNLINK || opc == REINT_RENAME)
2762 else if (opc == REINT_OPEN)
2767 rc = lustre_pack_reply(req, bufcount, size, NULL);
2771 rc = mds_reint(req, MDS_REQ_REC_OFF, NULL);
2772 fail = OBD_FAIL_MDS_REINT_NET_REP;
2777 DEBUG_REQ(D_INODE, req, "close");
2778 OBD_FAIL_RETURN(OBD_FAIL_MDS_CLOSE_NET, 0);
2779 rc = mds_close(req, MDS_REQ_REC_OFF);
2782 case MDS_DONE_WRITING:
2783 DEBUG_REQ(D_INODE, req, "done_writing");
2784 OBD_FAIL_RETURN(OBD_FAIL_MDS_DONE_WRITING_NET, 0);
2785 rc = mds_done_writing(req, MDS_REQ_REC_OFF);
2789 DEBUG_REQ(D_INODE, req, "pin");
2790 OBD_FAIL_RETURN(OBD_FAIL_MDS_PIN_NET, 0);
2791 rc = mds_pin(req, MDS_REQ_REC_OFF);
2795 DEBUG_REQ(D_INODE, req, "sync");
2796 OBD_FAIL_RETURN(OBD_FAIL_MDS_SYNC_NET, 0);
2797 rc = mds_sync(req, MDS_REQ_REC_OFF);
2801 DEBUG_REQ(D_INODE, req, "ping");
2802 rc = target_handle_ping(req);
2805 case OBD_LOG_CANCEL:
2806 CDEBUG(D_INODE, "log cancel\n");
2807 OBD_FAIL_RETURN(OBD_FAIL_OBD_LOG_CANCEL_NET, 0);
2808 rc = -ENOTSUPP; /* la la la */
2812 DEBUG_REQ(D_INODE, req, "enqueue");
2813 OBD_FAIL_RETURN(OBD_FAIL_LDLM_ENQUEUE, 0);
2814 rc = ldlm_handle_enqueue(req, ldlm_server_completion_ast,
2815 ldlm_server_blocking_ast, NULL);
2816 fail = OBD_FAIL_LDLM_REPLY;
2819 DEBUG_REQ(D_INODE, req, "convert");
2820 OBD_FAIL_RETURN(OBD_FAIL_LDLM_CONVERT, 0);
2821 rc = ldlm_handle_convert(req);
2823 case LDLM_BL_CALLBACK:
2824 case LDLM_CP_CALLBACK:
2825 DEBUG_REQ(D_INODE, req, "callback");
2826 CERROR("callbacks should not happen on MDS\n");
2828 OBD_FAIL_RETURN(OBD_FAIL_LDLM_BL_CALLBACK, 0);
2830 case LLOG_ORIGIN_HANDLE_OPEN:
2831 DEBUG_REQ(D_INODE, req, "llog_init");
2832 OBD_FAIL_RETURN(OBD_FAIL_OBD_LOGD_NET, 0);
2833 rc = llog_origin_handle_open(req);
2835 case LLOG_ORIGIN_HANDLE_NEXT_BLOCK:
2836 DEBUG_REQ(D_INODE, req, "llog next block");
2837 OBD_FAIL_RETURN(OBD_FAIL_OBD_LOGD_NET, 0);
2838 rc = llog_origin_handle_next_block(req);
2840 case LLOG_ORIGIN_HANDLE_PREV_BLOCK:
2841 DEBUG_REQ(D_INODE, req, "llog prev block");
2842 OBD_FAIL_RETURN(OBD_FAIL_OBD_LOGD_NET, 0);
2843 rc = llog_origin_handle_prev_block(req);
2845 case LLOG_ORIGIN_HANDLE_READ_HEADER:
2846 DEBUG_REQ(D_INODE, req, "llog read header");
2847 OBD_FAIL_RETURN(OBD_FAIL_OBD_LOGD_NET, 0);
2848 rc = llog_origin_handle_read_header(req);
2850 case LLOG_ORIGIN_HANDLE_CLOSE:
2851 DEBUG_REQ(D_INODE, req, "llog close");
2852 OBD_FAIL_RETURN(OBD_FAIL_OBD_LOGD_NET, 0);
2853 rc = llog_origin_handle_close(req);
2856 DEBUG_REQ(D_INODE, req, "ost_create");
2857 rc = mdt_obj_create(req);
2860 DEBUG_REQ(D_INODE, req, "get_info");
2861 rc = mdt_get_info(req);
2864 DEBUG_REQ(D_INODE, req, "set_info");
2865 rc = mdt_set_info(req);
2868 CDEBUG(D_INODE, "write\n");
2869 OBD_FAIL_RETURN(OBD_FAIL_OST_BRW_NET, 0);
2870 rc = ost_brw_write(req, NULL);
2871 LASSERT(current->journal_info == NULL);
2872 /* mdt_brw sends its own replies */
2876 DEBUG_REQ(D_INODE, req, "llog catinfo");
2877 OBD_FAIL_RETURN(OBD_FAIL_OBD_LOGD_NET, 0);
2878 rc = llog_catinfo(req);
2881 req->rq_status = -ENOTSUPP;
2882 rc = ptlrpc_error(req);
2886 LASSERT(current->journal_info == NULL);
2890 /* If we're DISCONNECTing, the mds_export_data is already freed */
2891 if (!rc && req->rq_reqmsg->opc != MDS_DISCONNECT) {
2892 struct mds_export_data *med = &req->rq_export->exp_mds_data;
2893 struct obd_device *obd = list_entry(mds, struct obd_device,
2895 req->rq_repmsg->last_xid =
2896 le64_to_cpu(med->med_mcd->mcd_last_xid);
2898 if (!obd->obd_no_transno) {
2899 req->rq_repmsg->last_committed =
2900 obd->obd_last_committed;
2902 DEBUG_REQ(D_IOCTL, req,
2903 "not sending last_committed update");
2905 CDEBUG(D_INFO, "last_transno "LPU64", last_committed "LPU64
2907 mds->mds_last_transno, obd->obd_last_committed,
2913 target_send_reply(req, rc, fail);
2917 /* Update the server data on disk. This stores the new mount_count and also the
2918 * last_rcvd value to disk. If we don't have a clean shutdown, then the server
2919 * last_rcvd value may be less than that of the clients. This will alert us
2920 * that we may need to do client recovery.
2922 * Also assumes for mds_last_transno that we are not modifying it (no locking).
2924 int mds_update_server_data(struct obd_device *obd, int force_sync)
2926 struct mds_obd *mds = &obd->u.mds;
2927 struct mds_server_data *msd = mds->mds_server_data;
2928 struct file *filp = mds->mds_rcvd_filp;
2929 struct lvfs_run_ctxt saved;
2934 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
2935 msd->msd_last_transno = cpu_to_le64(mds->mds_last_transno);
2937 CDEBUG(D_SUPER, "MDS mount_count is "LPU64", last_transno is "LPU64"\n",
2938 mds->mds_mount_count, mds->mds_last_transno);
2939 rc = fsfilt_write_record(obd, filp, msd, sizeof(*msd), &off, force_sync);
2941 CERROR("error writing MDS server data: rc = %d\n", rc);
2942 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
2947 /* saves last allocated fid counter to file. */
2948 int mds_update_last_fid(struct obd_device *obd, void *handle,
2951 struct mds_obd *mds = &obd->u.mds;
2952 struct file *filp = mds->mds_fid_filp;
2953 struct lvfs_run_ctxt saved;
2959 spin_lock(&mds->mds_last_fid_lock);
2960 last_fid = mds->mds_last_fid;
2961 spin_unlock(&mds->mds_last_fid_lock);
2963 CDEBUG(D_SUPER, "MDS last_fid is #"LPU64"\n",
2967 fsfilt_add_journal_cb(obd, mds->mds_sb, last_fid,
2968 handle, mds_commit_last_fid_cb,
2972 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
2973 rc = fsfilt_write_record(obd, filp, &last_fid, sizeof(last_fid),
2975 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
2978 CERROR("error writing MDS last_fid #"LPU64
2979 ", err = %d\n", last_fid, rc);
2983 CDEBUG(D_SUPER, "wrote fid #"LPU64" at idx "
2984 "%llu: err = %d\n", last_fid, off, rc);
2989 void mds_set_last_fid(struct obd_device *obd, __u64 fid)
2991 struct mds_obd *mds = &obd->u.mds;
2993 spin_lock(&mds->mds_last_fid_lock);
2994 if (fid > mds->mds_last_fid)
2995 mds->mds_last_fid = fid;
2996 spin_unlock(&mds->mds_last_fid_lock);
2999 void mds_commit_last_transno_cb(struct obd_device *obd,
3000 __u64 transno, void *data,
3003 obd_transno_commit_cb(obd, transno, error);
3006 void mds_commit_last_fid_cb(struct obd_device *obd,
3007 __u64 fid, void *data,
3011 CERROR("%s: fid "LPD64" commit error: %d\n",
3012 obd->obd_name, fid, error);
3016 CDEBUG(D_HA, "%s: fid "LPD64" committed\n",
3017 obd->obd_name, fid);
3020 __u64 mds_alloc_fid(struct obd_device *obd)
3022 struct mds_obd *mds = &obd->u.mds;
3025 spin_lock(&mds->mds_last_fid_lock);
3026 fid = ++mds->mds_last_fid;
3027 spin_unlock(&mds->mds_last_fid_lock);
3033 * allocates new lustre_id on passed @inode and saves it to inode EA.
3035 int mds_alloc_inode_sid(struct obd_device *obd, struct inode *inode,
3036 void *handle, struct lustre_id *id)
3038 struct mds_obd *mds = &obd->u.mds;
3039 int alloc = 0, rc = 0;
3042 LASSERT(obd != NULL);
3043 LASSERT(inode != NULL);
3046 OBD_ALLOC(id, sizeof(*id));
3052 id_group(id) = mds->mds_num;
3053 id_fid(id) = mds_alloc_fid(obd);
3054 id_ino(id) = inode->i_ino;
3055 id_gen(id) = inode->i_generation;
3056 id_type(id) = (S_IFMT & inode->i_mode);
3058 rc = mds_update_inode_sid(obd, inode, handle, id);
3060 CERROR("Can't update inode FID EA, "
3065 OBD_FREE(id, sizeof(*id));
3070 * reads inode self id from inode EA. Probably later this should be replaced by
3071 * caching inode self id to avoid raeding it every time it is needed.
3073 int mds_read_inode_sid(struct obd_device *obd, struct inode *inode,
3074 struct lustre_id *id)
3079 LASSERT(id != NULL);
3080 LASSERT(obd != NULL);
3081 LASSERT(inode != NULL);
3083 rc = fsfilt_get_md(obd, inode, &id->li_fid,
3084 sizeof(id->li_fid), EA_SID);
3086 CERROR("fsfilt_get_md() failed, "
3099 /* updates inode self id in EA. */
3100 int mds_update_inode_sid(struct obd_device *obd, struct inode *inode,
3101 void *handle, struct lustre_id *id)
3106 LASSERT(id != NULL);
3107 LASSERT(obd != NULL);
3108 LASSERT(inode != NULL);
3110 rc = fsfilt_set_md(obd, inode, handle, &id->li_fid,
3111 sizeof(id->li_fid), EA_SID);
3113 CERROR("fsfilt_set_md() failed, rc = %d\n", rc);
3121 * reads inode id on master MDS. This is usualy done by CMOBD to update requests
3122 * to master MDS by correct store cookie, needed to find inode on master MDS
3125 int mds_read_inode_mid(struct obd_device *obd, struct inode *inode,
3126 struct lustre_id *id)
3131 LASSERT(id != NULL);
3132 LASSERT(obd != NULL);
3133 LASSERT(inode != NULL);
3135 rc = fsfilt_get_md(obd, inode, id, sizeof(*id), EA_MID);
3137 CERROR("fsfilt_get_md() failed, rc = %d\n", rc);
3150 * updates master inode id. Usualy this is done by CMOBD after an inode is
3151 * created and relationship between cache MDS and master one should be
3154 int mds_update_inode_mid(struct obd_device *obd, struct inode *inode,
3155 void *handle, struct lustre_id *id)
3160 LASSERT(id != NULL);
3161 LASSERT(obd != NULL);
3162 LASSERT(inode != NULL);
3164 rc = fsfilt_set_md(obd, inode, handle, id,
3165 sizeof(*id), EA_MID);
3167 CERROR("fsfilt_set_md() failed, "
3175 /* mount the file system (secretly) */
3176 static int mds_setup(struct obd_device *obd, obd_count len, void *buf)
3178 struct lustre_cfg* lcfg = buf;
3179 struct mds_obd *mds = &obd->u.mds;
3180 struct lvfs_obd_ctxt *lvfs_ctxt = NULL;
3181 char *options = NULL;
3182 struct vfsmount *mnt;
3188 if (lcfg->lcfg_bufcount < 3)
3189 RETURN(rc = -EINVAL);
3191 if (LUSTRE_CFG_BUFLEN(lcfg, 1) == 0 || LUSTRE_CFG_BUFLEN(lcfg, 2) == 0)
3192 RETURN(rc = -EINVAL);
3194 obd->obd_fsops = fsfilt_get_ops(lustre_cfg_string(lcfg, 2));
3195 if (IS_ERR(obd->obd_fsops))
3196 RETURN(rc = PTR_ERR(obd->obd_fsops));
3198 mds->mds_max_mdsize = sizeof(struct lov_mds_md);
3200 page = __get_free_page(GFP_KERNEL);
3204 options = (char *)page;
3205 memset(options, 0, PAGE_SIZE);
3208 * here we use "iopen_nopriv" hardcoded, because it affects MDS utility
3209 * and the rest of options are passed by mount options. Probably this
3210 * should be moved to somewhere else like startup scripts or lconf. */
3211 sprintf(options, "iopen_nopriv");
3213 if (LUSTRE_CFG_BUFLEN(lcfg, 4) > 0 && lustre_cfg_buf(lcfg, 4))
3214 sprintf(options + strlen(options), ",%s",
3215 lustre_cfg_string(lcfg, 4));
3217 /* we have to know mdsnum before touching underlying fs -bzzz */
3218 atomic_set(&mds->mds_open_count, 0);
3219 sema_init(&mds->mds_md_sem, 1);
3220 mds->mds_md_connected = 0;
3221 mds->mds_md_name = NULL;
3223 if (LUSTRE_CFG_BUFLEN(lcfg, 5) > 0 && lustre_cfg_buf(lcfg, 5) &&
3224 strncmp(lustre_cfg_string(lcfg, 5), "dumb", LUSTRE_CFG_BUFLEN(lcfg, 5))) {
3227 generate_random_uuid(uuid);
3228 class_uuid_unparse(uuid, &mds->mds_md_uuid);
3230 OBD_ALLOC(mds->mds_md_name, LUSTRE_CFG_BUFLEN(lcfg, 5));
3231 if (mds->mds_md_name == NULL)
3232 RETURN(rc = -ENOMEM);
3234 memcpy(mds->mds_md_name, lustre_cfg_buf(lcfg, 5),
3235 LUSTRE_CFG_BUFLEN(lcfg, 5));
3237 CDEBUG(D_OTHER, "MDS: %s is master for %s\n",
3238 obd->obd_name, mds->mds_md_name);
3240 rc = mds_md_connect(obd, mds->mds_md_name);
3242 OBD_FREE(mds->mds_md_name, LUSTRE_CFG_BUFLEN(lcfg, 5));
3247 mds->mds_obd_type = MDS_MASTER_OBD;
3249 if (LUSTRE_CFG_BUFLEN(lcfg, 6) > 0 && lustre_cfg_buf(lcfg, 6) &&
3250 strncmp(lustre_cfg_string(lcfg, 6), "dumb",
3251 LUSTRE_CFG_BUFLEN(lcfg, 6))) {
3252 if (!memcmp(lustre_cfg_string(lcfg, 6), "master",
3253 strlen("master"))) {
3254 mds->mds_obd_type = MDS_MASTER_OBD;
3255 } else if (!memcmp(lustre_cfg_string(lcfg, 6), "cache",
3257 mds->mds_obd_type = MDS_CACHE_OBD;
3261 rc = lvfs_mount_fs(lustre_cfg_string(lcfg, 1),
3262 lustre_cfg_string(lcfg, 2),
3263 options, 0, &lvfs_ctxt);
3267 if (rc || !lvfs_ctxt) {
3268 CERROR("lvfs_mount_fs failed: rc = %d\n", rc);
3272 mnt = lvfs_ctxt->loc_mnt;
3273 mds->mds_lvfs_ctxt = lvfs_ctxt;
3274 ll_clear_rdonly(ll_sbdev(mnt->mnt_sb));
3276 CDEBUG(D_SUPER, "%s: mnt = %p\n", lustre_cfg_string(lcfg, 1), mnt);
3278 sema_init(&mds->mds_epoch_sem, 1);
3279 atomic_set(&mds->mds_real_clients, 0);
3280 spin_lock_init(&mds->mds_transno_lock);
3281 spin_lock_init(&mds->mds_last_fid_lock);
3282 sema_init(&mds->mds_orphan_recovery_sem, 1);
3283 mds->mds_max_cookiesize = sizeof(struct llog_cookie);
3285 sprintf(ns_name, "mds-%s", obd->obd_uuid.uuid);
3286 obd->obd_namespace = ldlm_namespace_new(ns_name, LDLM_NAMESPACE_SERVER);
3288 if (obd->obd_namespace == NULL) {
3289 mds_cleanup(obd, 0);
3290 GOTO(err_put, rc = -ENOMEM);
3292 ldlm_register_intent(obd->obd_namespace, mds_intent_policy);
3294 rc = mds_fs_setup(obd, mnt);
3296 CERROR("%s: MDS filesystem method init failed: rc = %d\n",
3301 rc = llog_start_commit_thread();
3307 if (LUSTRE_CFG_BUFLEN(lcfg, 3) > 0 && lustre_cfg_buf(lcfg, 3) &&
3308 strncmp(lustre_cfg_string(lcfg, 3), "dumb",
3309 LUSTRE_CFG_BUFLEN(lcfg, 3))) {
3312 generate_random_uuid(uuid);
3313 class_uuid_unparse(uuid, &mds->mds_dt_uuid);
3315 OBD_ALLOC(mds->mds_profile, LUSTRE_CFG_BUFLEN(lcfg, 3));
3316 if (mds->mds_profile == NULL)
3317 GOTO(err_fs, rc = -ENOMEM);
3319 strncpy(mds->mds_profile, lustre_cfg_string(lcfg, 3),
3320 LUSTRE_CFG_BUFLEN(lcfg, 3));
3324 * setup root dir and files ID dir if lmv already connected, or there is
3327 if (mds->mds_md_exp || (LUSTRE_CFG_BUFLEN(lcfg, 3) > 0 &&
3328 lustre_cfg_buf(lcfg, 3) &&
3329 strncmp(lustre_cfg_string(lcfg, 3), "dumb",
3330 LUSTRE_CFG_BUFLEN(lcfg, 3)))) {
3331 rc = mds_fs_setup_rootid(obd);
3335 rc = mds_fs_setup_virtid(obd);
3340 ptlrpc_init_client(LDLM_CB_REQUEST_PORTAL, LDLM_CB_REPLY_PORTAL,
3341 "mds_ldlm_client", &obd->obd_ldlm_client);
3342 obd->obd_replayable = 1;
3344 rc = mds_postsetup(obd);
3351 /* No extra cleanup needed for llog_init_commit_thread() */
3352 mds_fs_cleanup(obd, 0);
3354 ldlm_namespace_free(obd->obd_namespace, 0);
3355 obd->obd_namespace = NULL;
3358 lvfs_umount_fs(mds->mds_lvfs_ctxt);
3362 fsfilt_put_ops(obd->obd_fsops);
3366 static int mds_postsetup(struct obd_device *obd)
3368 struct mds_obd *mds = &obd->u.mds;
3372 rc = obd_llog_setup(obd, &obd->obd_llogs, LLOG_CONFIG_ORIG_CTXT,
3373 obd, 0, NULL, &llog_lvfs_ops);
3377 if (mds->mds_profile) {
3378 struct llog_ctxt *lgctxt;
3379 struct lvfs_run_ctxt saved;
3380 struct lustre_profile *lprof;
3381 struct config_llog_instance cfg;
3383 cfg.cfg_instance = NULL;
3384 cfg.cfg_uuid = mds->mds_dt_uuid;
3385 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
3387 lgctxt = llog_get_context(&obd->obd_llogs, LLOG_CONFIG_ORIG_CTXT);
3389 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
3390 GOTO(err_llog, rc = -EINVAL);
3393 rc = class_config_process_llog(lgctxt, mds->mds_profile, &cfg);
3394 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
3399 lprof = class_get_profile(mds->mds_profile);
3400 if (lprof == NULL) {
3401 CERROR("No profile found: %s\n", mds->mds_profile);
3402 GOTO(err_cleanup, rc = -ENOENT);
3404 rc = mds_dt_connect(obd, lprof->lp_lov);
3406 GOTO(err_cleanup, rc);
3408 rc = mds_md_postsetup(obd);
3410 GOTO(err_cleanup, rc);
3417 obd_llog_cleanup(llog_get_context(&obd->obd_llogs,
3418 LLOG_CONFIG_ORIG_CTXT));
3422 int mds_postrecov_common(struct obd_device *obd)
3424 struct mds_obd *mds = &obd->u.mds;
3425 struct llog_ctxt *ctxt;
3426 int rc, item = 0, valsize;
3430 LASSERT(!obd->obd_recovering);
3431 ctxt = llog_get_context(&obd->obd_llogs, LLOG_UNLINK_ORIG_CTXT);
3432 LASSERT(ctxt != NULL);
3434 /* set nextid first, so we are sure it happens */
3435 rc = mds_dt_set_nextid(obd);
3437 CERROR("%s: mds_dt_set_nextid() failed\n", obd->obd_name);
3441 /* clean PENDING dir */
3442 rc = mds_cleanup_orphans(obd);
3447 group = FILTER_GROUP_FIRST_MDS + mds->mds_num;
3448 valsize = sizeof(group);
3449 rc = obd_set_info(mds->mds_dt_exp, strlen("mds_conn"), "mds_conn",
3454 rc = llog_connect(ctxt, obd->u.mds.mds_dt_desc.ld_tgt_count,
3457 CERROR("%s: failed at llog_origin_connect: %d\n",
3462 /* remove the orphaned precreated objects */
3463 rc = mds_dt_clearorphans(mds, NULL /* all OSTs */);
3468 RETURN(rc < 0 ? rc : item);
3471 /* cleanup all llogging subsystems */
3472 rc = obd_llog_finish(obd, &obd->obd_llogs,
3473 mds->mds_dt_desc.ld_tgt_count);
3475 CERROR("%s: failed to cleanup llogging subsystems\n",
3480 int mds_postrecov(struct obd_device *obd)
3484 rc = mds_postrecov_common(obd);
3486 rc = mds_md_reconnect(obd);
3490 int mds_dt_clean(struct obd_device *obd)
3492 struct mds_obd *mds = &obd->u.mds;
3495 if (mds->mds_profile) {
3497 struct llog_ctxt *llctx;
3498 struct lvfs_run_ctxt saved;
3499 struct config_llog_instance cfg;
3500 int len = strlen(mds->mds_profile) + sizeof("-clean") + 1;
3502 OBD_ALLOC(cln_prof, len);
3503 sprintf(cln_prof, "%s-clean", mds->mds_profile);
3505 cfg.cfg_instance = NULL;
3506 cfg.cfg_uuid = mds->mds_dt_uuid;
3508 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
3509 llctx = llog_get_context(&obd->obd_llogs,
3510 LLOG_CONFIG_ORIG_CTXT);
3511 class_config_process_llog(llctx, cln_prof, &cfg);
3512 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
3514 OBD_FREE(cln_prof, len);
3515 OBD_FREE(mds->mds_profile, strlen(mds->mds_profile) + 1);
3516 mds->mds_profile = NULL;
3521 int mds_md_clean(struct obd_device *obd)
3523 struct mds_obd *mds = &obd->u.mds;
3526 if (mds->mds_md_name) {
3527 OBD_FREE(mds->mds_md_name, strlen(mds->mds_md_name) + 1);
3528 mds->mds_md_name = NULL;
3533 static int mds_precleanup(struct obd_device *obd, int flags)
3539 mds_dt_disconnect(obd, flags);
3541 obd_llog_cleanup(llog_get_context(&obd->obd_llogs, LLOG_CONFIG_ORIG_CTXT));
3545 extern void lgss_svc_cache_purge_all(void);
3546 static int mds_cleanup(struct obd_device *obd, int flags)
3548 struct mds_obd *mds = &obd->u.mds;
3551 if (mds->mds_sb == NULL)
3554 mds_update_server_data(obd, 1);
3555 mds_update_last_fid(obd, NULL, 1);
3557 if (mds->mds_dt_objids != NULL) {
3558 int size = mds->mds_dt_desc.ld_tgt_count *
3560 OBD_FREE(mds->mds_dt_objids, size);
3562 mds_fs_cleanup(obd, flags);
3566 /* 2 seems normal on mds, (may_umount() also expects 2
3567 fwiw), but we only see 1 at this point in obdfilter. */
3568 lvfs_umount_fs(mds->mds_lvfs_ctxt);
3572 ldlm_namespace_free(obd->obd_namespace, flags & OBD_OPT_FORCE);
3574 spin_lock_bh(&obd->obd_processing_task_lock);
3575 if (obd->obd_recovering) {
3576 target_cancel_recovery_timer(obd);
3577 obd->obd_recovering = 0;
3579 spin_unlock_bh(&obd->obd_processing_task_lock);
3582 fsfilt_put_ops(obd->obd_fsops);
3586 lgss_svc_cache_purge_all();
3591 static int set_security(const char *value, char **sec)
3595 if (!strcmp(value, "null"))
3597 else if (!strcmp(value, "krb5i"))
3599 else if (!strcmp(value, "krb5p"))
3602 CERROR("Unrecognized value, force use NULL\n");
3609 static int mds_process_config(struct obd_device *obd, obd_count len, void *buf)
3611 struct lustre_cfg *lcfg = buf;
3612 struct mds_obd *mds = &obd->u.mds;
3616 switch(lcfg->lcfg_command) {
3617 case LCFG_SET_SECURITY: {
3618 if (LUSTRE_CFG_BUFLEN(lcfg, 1) || LUSTRE_CFG_BUFLEN(lcfg, 2))
3619 GOTO(out, rc = -EINVAL);
3621 if (!strcmp(lustre_cfg_string(lcfg, 1), "mds_mds_sec"))
3622 rc = set_security(lustre_cfg_string(lcfg, 2),
3624 else if (!strcmp(lustre_cfg_string(lcfg, 2), "mds_ost_sec"))
3625 rc = set_security(lustre_cfg_string(lcfg, 2),
3628 CERROR("Unrecognized key\n");
3634 CERROR("Unknown command: %d\n", lcfg->lcfg_command);
3635 GOTO(out, rc = -EINVAL);
3643 static void fixup_handle_for_resent_req(struct ptlrpc_request *req,
3645 struct ldlm_lock *new_lock,
3646 struct ldlm_lock **old_lock,
3647 struct lustre_handle *lockh)
3649 struct obd_export *exp = req->rq_export;
3650 struct obd_device *obd = exp->exp_obd;
3651 struct ldlm_request *dlmreq =
3652 lustre_msg_buf(req->rq_reqmsg, offset, sizeof (*dlmreq));
3653 struct lustre_handle remote_hdl = dlmreq->lock_handle1;
3654 struct list_head *iter;
3656 if (!(lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT))
3659 l_lock(&obd->obd_namespace->ns_lock);
3660 list_for_each(iter, &exp->exp_ldlm_data.led_held_locks) {
3661 struct ldlm_lock *lock;
3662 lock = list_entry(iter, struct ldlm_lock, l_export_chain);
3663 if (lock == new_lock)
3665 if (lock->l_remote_handle.cookie == remote_hdl.cookie) {
3666 lockh->cookie = lock->l_handle.h_cookie;
3667 LDLM_DEBUG(lock, "restoring lock cookie");
3668 DEBUG_REQ(D_HA, req, "restoring lock cookie "LPX64,
3671 *old_lock = LDLM_LOCK_GET(lock);
3672 l_unlock(&obd->obd_namespace->ns_lock);
3676 l_unlock(&obd->obd_namespace->ns_lock);
3678 /* If the xid matches, then we know this is a resent request,
3679 * and allow it. (It's probably an OPEN, for which we don't
3682 le64_to_cpu(exp->exp_mds_data.med_mcd->mcd_last_xid))
3686 le64_to_cpu(exp->exp_mds_data.med_mcd->mcd_last_close_xid))
3689 /* This remote handle isn't enqueued, so we never received or
3690 * processed this request. Clear MSG_RESENT, because it can
3691 * be handled like any normal request now. */
3693 lustre_msg_clear_flags(req->rq_reqmsg, MSG_RESENT);
3695 DEBUG_REQ(D_HA, req, "no existing lock with rhandle "LPX64,
3699 int intent_disposition(struct ldlm_reply *rep, int flag)
3703 return (rep->lock_policy_res1 & flag);
3706 void intent_set_disposition(struct ldlm_reply *rep, int flag)
3710 rep->lock_policy_res1 |= flag;
3713 static int mds_intent_policy(struct ldlm_namespace *ns,
3714 struct ldlm_lock **lockp, void *req_cookie,
3715 ldlm_mode_t mode, int flags, void *data)
3717 struct ptlrpc_request *req = req_cookie;
3718 struct ldlm_lock *lock = *lockp;
3719 struct ldlm_intent *it;
3720 struct mds_obd *mds = &req->rq_export->exp_obd->u.mds;
3721 struct ldlm_reply *rep;
3722 struct lustre_handle lockh[2] = {{0}, {0}};
3723 struct ldlm_lock *new_lock = NULL;
3724 int getattr_part = MDS_INODELOCK_UPDATE;
3725 int rc, reply_buffers;
3726 int repsize[5] = {sizeof(struct ldlm_reply),
3727 sizeof(struct mds_body),
3728 mds->mds_max_mdsize};
3730 int offset = MDS_REQ_INTENT_REC_OFF;
3733 LASSERT(req != NULL);
3734 MD_COUNTER_INCREMENT(req->rq_export->exp_obd, intent_lock);
3736 if (req->rq_reqmsg->bufcount <= MDS_REQ_INTENT_IT_OFF) {
3737 /* No intent was provided */
3738 int size = sizeof(struct ldlm_reply);
3739 rc = lustre_pack_reply(req, 1, &size, NULL);
3744 it = lustre_swab_reqbuf(req, MDS_REQ_INTENT_IT_OFF, sizeof(*it),
3745 lustre_swab_ldlm_intent);
3747 CERROR("Intent missing\n");
3748 RETURN(req->rq_status = -EFAULT);
3751 LDLM_DEBUG(lock, "intent policy, opc: %s", ldlm_it2str(it->opc));
3754 if (it->opc & ( IT_OPEN | IT_GETATTR | IT_LOOKUP | IT_CHDIR )) {
3757 repsize[4] = xattr_acl_size(LL_ACL_MAX_ENTRIES);
3760 rc = lustre_pack_reply(req, reply_buffers, repsize, NULL);
3762 RETURN(req->rq_status = rc);
3764 rep = lustre_msg_buf(req->rq_repmsg, 0, sizeof(*rep));
3765 LASSERT(rep != NULL);
3767 intent_set_disposition(rep, DISP_IT_EXECD);
3769 /* execute policy */
3770 switch ((long)it->opc) {
3772 case IT_CREAT|IT_OPEN:
3773 fixup_handle_for_resent_req(req, MDS_REQ_INTENT_LOCKREQ_OFF,
3775 /* XXX swab here to assert that an mds_open reint
3776 * packet is following */
3777 fixup_handle_for_resent_req(req, MDS_REQ_INTENT_LOCKREQ_OFF,
3779 rep->lock_policy_res2 = mds_reint(req, offset, lockh);
3781 if (rep->lock_policy_res2) {
3783 * mds_open() returns ENOLCK where it should return
3784 * zero, but it has no lock to return.
3786 if (rep->lock_policy_res2 == ENOLCK)
3787 rep->lock_policy_res2 = 0;
3789 RETURN(ELDLM_LOCK_ABORTED);
3793 * IT_OPEN may return lock on cross-node dentry that we want to
3794 * hold during attr retrival -bzzz
3796 if (lockh[0].cookie == 0)
3797 RETURN(ELDLM_LOCK_ABORTED);
3801 getattr_part = MDS_INODELOCK_LOOKUP;
3804 getattr_part |= MDS_INODELOCK_LOOKUP;
3806 fixup_handle_for_resent_req(req, MDS_REQ_INTENT_LOCKREQ_OFF,
3807 lock, &new_lock, lockh);
3808 rep->lock_policy_res2 = mds_getattr_lock(req, offset, lockh,
3810 /* FIXME: LDLM can set req->rq_status. MDS sets
3811 policy_res{1,2} with disposition and status.
3812 - replay: returns 0 & req->status is old status
3813 - otherwise: returns req->status */
3814 if (intent_disposition(rep, DISP_LOOKUP_NEG))
3815 rep->lock_policy_res2 = 0;
3816 if (!intent_disposition(rep, DISP_LOOKUP_POS) ||
3817 rep->lock_policy_res2)
3818 RETURN(ELDLM_LOCK_ABORTED);
3819 if (req->rq_status != 0) {
3821 rep->lock_policy_res2 = req->rq_status;
3822 RETURN(ELDLM_LOCK_ABORTED);
3826 rc = mds_lock_and_check_slave(offset, req, lockh);
3827 if ((rep->lock_policy_res2 = rc)) {
3829 rep->lock_policy_res2 = 0;
3830 RETURN(ELDLM_LOCK_ABORTED);
3834 CERROR("Unhandled intent "LPD64"\n", it->opc);
3838 /* By this point, whatever function we called above must have either
3839 * filled in 'lockh', been an intent replay, or returned an error. We
3840 * want to allow replayed RPCs to not get a lock, since we would just
3841 * drop it below anyways because lock replay is done separately by the
3842 * client afterwards. For regular RPCs we want to give the new lock to
3843 * the client instead of whatever lock it was about to get. */
3844 if (new_lock == NULL)
3845 new_lock = ldlm_handle2lock(&lockh[0]);
3846 if (new_lock == NULL && (flags & LDLM_FL_INTENT_ONLY))
3849 LASSERTF(new_lock != NULL, "op "LPX64" lockh "LPX64"\n",
3850 it->opc, lockh[0].cookie);
3852 /* If we've already given this lock to a client once, then we should
3853 * have no readers or writers. Otherwise, we should have one reader
3854 * _or_ writer ref (which will be zeroed below) before returning the
3855 * lock to a client. */
3856 if (new_lock->l_export == req->rq_export) {
3857 LASSERT(new_lock->l_readers + new_lock->l_writers == 0);
3859 LASSERT(new_lock->l_export == NULL);
3860 LASSERT(new_lock->l_readers + new_lock->l_writers == 1);
3865 if (new_lock->l_export == req->rq_export) {
3866 /* Already gave this to the client, which means that we
3867 * reconstructed a reply. */
3868 LASSERT(lustre_msg_get_flags(req->rq_reqmsg) &
3870 RETURN(ELDLM_LOCK_REPLACED);
3873 /* Fixup the lock to be given to the client */
3874 l_lock(&new_lock->l_resource->lr_namespace->ns_lock);
3875 new_lock->l_readers = 0;
3876 new_lock->l_writers = 0;
3878 new_lock->l_export = class_export_get(req->rq_export);
3879 list_add(&new_lock->l_export_chain,
3880 &new_lock->l_export->exp_ldlm_data.led_held_locks);
3882 new_lock->l_blocking_ast = lock->l_blocking_ast;
3883 new_lock->l_completion_ast = lock->l_completion_ast;
3885 memcpy(&new_lock->l_remote_handle, &lock->l_remote_handle,
3886 sizeof(lock->l_remote_handle));
3888 new_lock->l_flags &= ~LDLM_FL_LOCAL;
3890 LDLM_LOCK_PUT(new_lock);
3891 l_unlock(&new_lock->l_resource->lr_namespace->ns_lock);
3893 RETURN(ELDLM_LOCK_REPLACED);
3896 int mds_attach(struct obd_device *dev, obd_count len, void *data)
3898 struct lprocfs_static_vars lvars;
3901 lprocfs_init_multi_vars(0, &lvars);
3903 rc = lprocfs_obd_attach(dev, lvars.obd_vars);
3907 return lprocfs_alloc_md_stats(dev, 0);
3910 int mds_detach(struct obd_device *dev)
3912 lprocfs_free_md_stats(dev);
3913 return lprocfs_obd_detach(dev);
3916 int mdt_attach(struct obd_device *dev, obd_count len, void *data)
3918 struct lprocfs_static_vars lvars;
3920 lprocfs_init_multi_vars(1, &lvars);
3921 return lprocfs_obd_attach(dev, lvars.obd_vars);
3924 int mdt_detach(struct obd_device *dev)
3926 return lprocfs_obd_detach(dev);
3929 static int mdt_setup(struct obd_device *obd, obd_count len, void *buf)
3931 struct mds_obd *mds = &obd->u.mds;
3936 ptlrpc_init_svc(MDS_NBUFS, MDS_BUFSIZE, MDS_MAXREQSIZE,
3937 MDS_REQUEST_PORTAL, MDC_REPLY_PORTAL,
3938 MDS_SERVICE_WATCHDOG_TIMEOUT,
3939 mds_handle, "mds", obd->obd_proc_entry);
3941 if (!mds->mds_service) {
3942 CERROR("failed to start service\n");
3946 rc = ptlrpc_start_n_threads(obd, mds->mds_service, MDT_NUM_THREADS,
3949 GOTO(err_thread, rc);
3951 mds->mds_setattr_service =
3952 ptlrpc_init_svc(MDS_NBUFS, MDS_BUFSIZE, MDS_MAXREQSIZE,
3953 MDS_SETATTR_PORTAL, MDC_REPLY_PORTAL,
3954 MDS_SERVICE_WATCHDOG_TIMEOUT,
3955 mds_handle, "mds_setattr",
3956 obd->obd_proc_entry);
3957 if (!mds->mds_setattr_service) {
3958 CERROR("failed to start getattr service\n");
3959 GOTO(err_thread, rc = -ENOMEM);
3962 rc = ptlrpc_start_n_threads(obd, mds->mds_setattr_service,
3963 MDT_NUM_THREADS, "ll_mdt_attr");
3965 GOTO(err_thread2, rc);
3967 mds->mds_readpage_service =
3968 ptlrpc_init_svc(MDS_NBUFS, MDS_BUFSIZE, MDS_MAXREQSIZE,
3969 MDS_READPAGE_PORTAL, MDC_REPLY_PORTAL,
3970 MDS_SERVICE_WATCHDOG_TIMEOUT,
3971 mds_handle, "mds_readpage",
3972 obd->obd_proc_entry);
3973 if (!mds->mds_readpage_service) {
3974 CERROR("failed to start readpage service\n");
3975 GOTO(err_thread2, rc = -ENOMEM);
3978 rc = ptlrpc_start_n_threads(obd, mds->mds_readpage_service,
3979 MDT_NUM_THREADS, "ll_mdt_rdpg");
3982 GOTO(err_thread3, rc);
3987 ptlrpc_unregister_service(mds->mds_readpage_service);
3989 ptlrpc_unregister_service(mds->mds_setattr_service);
3991 ptlrpc_unregister_service(mds->mds_service);
3995 static int mdt_cleanup(struct obd_device *obd, int flags)
3997 struct mds_obd *mds = &obd->u.mds;
4000 ptlrpc_stop_all_threads(mds->mds_readpage_service);
4001 ptlrpc_unregister_service(mds->mds_readpage_service);
4003 ptlrpc_stop_all_threads(mds->mds_setattr_service);
4004 ptlrpc_unregister_service(mds->mds_setattr_service);
4006 ptlrpc_stop_all_threads(mds->mds_service);
4007 ptlrpc_unregister_service(mds->mds_service);
4012 static struct dentry *mds_lvfs_id2dentry(__u64 ino, __u32 gen,
4013 __u64 gr, void *data)
4015 struct lustre_id id;
4016 struct obd_device *obd = data;
4020 return mds_id2dentry(obd, &id, NULL);
4023 static int mds_get_info(struct obd_export *exp, __u32 keylen,
4024 void *key, __u32 *valsize, void *val)
4026 struct obd_device *obd;
4027 struct mds_obd *mds;
4030 obd = class_exp2obd(exp);
4034 CDEBUG(D_IOCTL, "invalid client cookie "LPX64"\n",
4035 exp->exp_handle.h_cookie);
4039 if (keylen >= strlen("reint_log") && memcmp(key, "reint_log", 9) == 0) {
4040 /* get log_context handle. */
4041 unsigned long *llh_handle = val;
4042 *valsize = sizeof(unsigned long);
4043 *llh_handle = (unsigned long)obd->obd_llog_ctxt[LLOG_REINT_ORIG_CTXT];
4046 if (keylen >= strlen("cache_sb") && memcmp(key, "cache_sb", 8) == 0) {
4047 /* get log_context handle. */
4048 unsigned long *sb = val;
4049 *valsize = sizeof(unsigned long);
4050 *sb = (unsigned long)obd->u.mds.mds_sb;
4054 if (keylen >= strlen("mdsize") && memcmp(key, "mdsize", keylen) == 0) {
4055 __u32 *mdsize = val;
4056 *valsize = sizeof(*mdsize);
4057 *mdsize = mds->mds_max_mdsize;
4061 if (keylen >= strlen("mdsnum") && strcmp(key, "mdsnum") == 0) {
4062 __u32 *mdsnum = val;
4063 *valsize = sizeof(*mdsnum);
4064 *mdsnum = mds->mds_num;
4068 if (keylen >= strlen("rootid") && strcmp(key, "rootid") == 0) {
4069 struct lustre_id *rootid = val;
4070 *valsize = sizeof(struct lustre_id);
4071 *rootid = mds->mds_rootid;
4075 CDEBUG(D_IOCTL, "invalid key\n");
4079 struct lvfs_callback_ops mds_lvfs_ops = {
4080 l_id2dentry: mds_lvfs_id2dentry,
4083 int mds_preprw(int cmd, struct obd_export *exp, struct obdo *oa,
4084 int objcount, struct obd_ioobj *obj,
4085 int niocount, struct niobuf_remote *nb,
4086 struct niobuf_local *res,
4087 struct obd_trans_info *oti);
4089 int mds_commitrw(int cmd, struct obd_export *exp, struct obdo *oa,
4090 int objcount, struct obd_ioobj *obj, int niocount,
4091 struct niobuf_local *res, struct obd_trans_info *oti,
4094 /* use obd ops to offer management infrastructure */
4095 static struct obd_ops mds_obd_ops = {
4096 .o_owner = THIS_MODULE,
4097 .o_attach = mds_attach,
4098 .o_detach = mds_detach,
4099 .o_connect = mds_connect,
4100 .o_connect_post = mds_connect_post,
4101 .o_init_export = mds_init_export,
4102 .o_destroy_export = mds_destroy_export,
4103 .o_disconnect = mds_disconnect,
4104 .o_setup = mds_setup,
4105 .o_precleanup = mds_precleanup,
4106 .o_cleanup = mds_cleanup,
4107 .o_process_config = mds_process_config,
4108 .o_postrecov = mds_postrecov,
4109 .o_statfs = mds_obd_statfs,
4110 .o_iocontrol = mds_iocontrol,
4111 .o_create = mds_obd_create,
4112 .o_destroy = mds_obd_destroy,
4113 .o_llog_init = mds_llog_init,
4114 .o_llog_finish = mds_llog_finish,
4115 .o_notify = mds_notify,
4116 .o_get_info = mds_get_info,
4117 .o_set_info = mds_set_info,
4118 .o_preprw = mds_preprw,
4119 .o_commitrw = mds_commitrw,
4122 static struct obd_ops mdt_obd_ops = {
4123 .o_owner = THIS_MODULE,
4124 .o_attach = mdt_attach,
4125 .o_detach = mdt_detach,
4126 .o_setup = mdt_setup,
4127 .o_cleanup = mdt_cleanup,
4130 static int __init mds_init(void)
4132 struct lprocfs_static_vars lvars;
4134 mds_init_lsd_cache();
4136 lprocfs_init_multi_vars(0, &lvars);
4137 class_register_type(&mds_obd_ops, NULL, lvars.module_vars,
4139 lprocfs_init_multi_vars(1, &lvars);
4140 class_register_type(&mdt_obd_ops, NULL, lvars.module_vars,
4146 static void /*__exit*/ mds_exit(void)
4148 mds_cleanup_lsd_cache();
4150 class_unregister_type(LUSTRE_MDS_NAME);
4151 class_unregister_type(LUSTRE_MDT_NAME);
4154 MODULE_AUTHOR("Cluster File Systems, Inc. <info@clusterfs.com>");
4155 MODULE_DESCRIPTION("Lustre Metadata Server (MDS)");
4156 MODULE_LICENSE("GPL");
4158 module_init(mds_init);
4159 module_exit(mds_exit);