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(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 CWARN("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 long flags)
567 struct obd_device *obd = exp->exp_obd;
568 struct mds_obd *mds = &obd->u.mds;
572 if (!(flags & OBD_OPT_MDS_CONNECTION)) {
573 if (!(exp->exp_flags & OBD_OPT_REAL_CLIENT)) {
574 atomic_inc(&mds->mds_real_clients);
575 CDEBUG(D_OTHER,"%s: peer from %s is real client (%d)\n",
576 obd->obd_name, exp->exp_client_uuid.uuid,
577 atomic_read(&mds->mds_real_clients));
578 exp->exp_flags |= OBD_OPT_REAL_CLIENT;
580 if (mds->mds_md_name)
581 rc = mds_md_connect(obd, mds->mds_md_name);
586 static int mds_init_export(struct obd_export *exp)
588 struct mds_export_data *med = &exp->exp_mds_data;
590 INIT_LIST_HEAD(&med->med_open_head);
591 spin_lock_init(&med->med_open_lock);
595 static int mds_destroy_export(struct obd_export *export)
597 struct obd_device *obd = export->exp_obd;
598 struct mds_export_data *med = &export->exp_mds_data;
599 struct lvfs_run_ctxt saved;
603 mds_free_export_data(med);
604 target_destroy_export(export);
606 if (obd_uuid_equals(&export->exp_client_uuid, &obd->obd_uuid))
609 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
611 /* Close any open files (which may also cause orphan unlinking). */
612 spin_lock(&med->med_open_lock);
613 while (!list_empty(&med->med_open_head)) {
614 struct list_head *tmp = med->med_open_head.next;
615 struct mds_file_data *mfd =
616 list_entry(tmp, struct mds_file_data, mfd_list);
617 struct lustre_id sid;
619 BDEVNAME_DECLARE_STORAGE(btmp);
621 /* bug 1579: fix force-closing for 2.5 */
622 struct dentry *dentry = mfd->mfd_dentry;
624 list_del(&mfd->mfd_list);
625 spin_unlock(&med->med_open_lock);
627 down(&dentry->d_inode->i_sem);
628 rc = mds_read_inode_sid(obd, dentry->d_inode, &sid);
629 up(&dentry->d_inode->i_sem);
631 CERROR("Can't read inode self id, inode %lu, "
632 "rc %d\n", dentry->d_inode->i_ino, rc);
633 memset(&sid, 0, sizeof(sid));
636 /* If you change this message, be sure to update
637 * replay_single:test_46 */
638 CERROR("force closing client file handle for %.*s (%s:"
639 DLID4")\n", dentry->d_name.len, dentry->d_name.name,
640 ll_bdevname(dentry->d_inode->i_sb, btmp),
643 /* child inode->i_alloc_sem protects orphan_dec_test and
644 * is_orphan race, mds_mfd_close drops it */
645 DOWN_WRITE_I_ALLOC_SEM(dentry->d_inode);
646 rc = mds_mfd_close(NULL, 0, obd, mfd,
647 !(export->exp_flags & OBD_OPT_FAILOVER));
649 CDEBUG(D_INODE, "Error closing file: %d\n", rc);
650 spin_lock(&med->med_open_lock);
652 spin_unlock(&med->med_open_lock);
653 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
657 mds_client_free(export, !(export->exp_flags & OBD_OPT_FAILOVER));
661 static int mds_disconnect(struct obd_export *exp, unsigned long flags)
663 unsigned long irqflags;
664 struct obd_device *obd;
669 LASSERT(exp != NULL);
670 obd = class_exp2obd(exp);
672 CDEBUG(D_IOCTL, "invalid client cookie "LPX64"\n",
673 exp->exp_handle.h_cookie);
679 * suppress any inter-mds requests durring disconnecting lmv if this is
680 * detected --force mode. This is needed to avoid endless recovery.
682 if (atomic_read(&mds->mds_real_clients) > 0 &&
683 !(exp->exp_flags & OBD_OPT_REAL_CLIENT))
684 flags |= OBD_OPT_FORCE;
686 if (!(exp->exp_flags & OBD_OPT_REAL_CLIENT)
687 && !atomic_read(&mds->mds_real_clients)) {
688 /* there was no client at all */
689 mds_md_disconnect(obd, flags);
692 if ((exp->exp_flags & OBD_OPT_REAL_CLIENT)
693 && atomic_dec_and_test(&mds->mds_real_clients)) {
694 /* time to drop LMV connections */
695 CDEBUG(D_OTHER, "%s: last real client %s disconnected. "
696 "Disconnnect from LMV now\n",
697 obd->obd_name, exp->exp_client_uuid.uuid);
698 mds_md_disconnect(obd, flags);
701 spin_lock_irqsave(&exp->exp_lock, irqflags);
702 exp->exp_flags = flags;
703 spin_unlock_irqrestore(&exp->exp_lock, irqflags);
705 /* disconnect early so that clients can't keep using export */
706 rc = class_disconnect(exp, flags);
707 ldlm_cancel_locks_for_export(exp);
709 /* complete all outstanding replies */
710 spin_lock_irqsave(&exp->exp_lock, irqflags);
711 while (!list_empty(&exp->exp_outstanding_replies)) {
712 struct ptlrpc_reply_state *rs =
713 list_entry(exp->exp_outstanding_replies.next,
714 struct ptlrpc_reply_state, rs_exp_list);
715 struct ptlrpc_service *svc = rs->rs_srv_ni->sni_service;
717 spin_lock(&svc->srv_lock);
718 list_del_init(&rs->rs_exp_list);
719 ptlrpc_schedule_difficult_reply(rs);
720 spin_unlock(&svc->srv_lock);
722 spin_unlock_irqrestore(&exp->exp_lock, irqflags);
726 static int mds_getstatus(struct ptlrpc_request *req)
728 struct mds_obd *mds = mds_req2mds(req);
729 struct mds_body *body;
733 size = sizeof(*body);
735 rc = lustre_pack_reply(req, 1, &size, NULL);
736 if (rc || OBD_FAIL_CHECK(OBD_FAIL_MDS_GETSTATUS_PACK)) {
737 CERROR("mds: out of memory for message: size=%d\n", size);
738 req->rq_status = -ENOMEM; /* superfluous? */
742 body = lustre_msg_buf(req->rq_repmsg, 0, sizeof(*body));
743 body->valid |= OBD_MD_FID;
745 memcpy(&body->id1, &mds->mds_rootid, sizeof(body->id1));
748 * the last_committed and last_xid fields are filled in for all replies
749 * already - no need to do so here also.
754 int mds_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
755 void *data, int flag)
760 if (flag == LDLM_CB_CANCELING) {
761 /* Don't need to do anything here. */
765 /* XXX layering violation! -phil */
766 l_lock(&lock->l_resource->lr_namespace->ns_lock);
769 * get this: if mds_blocking_ast is racing with mds_intent_policy, such
770 * that mds_blocking_ast is called just before l_i_p takes the ns_lock,
771 * then by the time we get the lock, we might not be the correct
772 * blocking function anymore. So check, and return early, if so.
774 if (lock->l_blocking_ast != mds_blocking_ast) {
775 l_unlock(&lock->l_resource->lr_namespace->ns_lock);
779 lock->l_flags |= LDLM_FL_CBPENDING;
780 do_ast = (!lock->l_readers && !lock->l_writers);
781 l_unlock(&lock->l_resource->lr_namespace->ns_lock);
784 struct lustre_handle lockh;
787 LDLM_DEBUG(lock, "already unused, calling ldlm_cli_cancel");
788 ldlm_lock2handle(lock, &lockh);
789 rc = ldlm_cli_cancel(&lockh);
791 CERROR("ldlm_cli_cancel: %d\n", rc);
793 LDLM_DEBUG(lock, "Lock still has references, will be "
799 static int mds_convert_md(struct obd_device *obd, struct inode *inode,
800 void *md, int size, int mea)
804 if (S_ISREG(inode->i_mode)) {
805 rc = mds_convert_lov_ea(obd, inode, md, size);
806 } else if (S_ISDIR(inode->i_mode)) {
808 rc = mds_convert_mea_ea(obd, inode, md, size);
810 rc = mds_convert_lov_ea(obd, inode, md, size);
813 CERROR("Invalid EA format (nor LOV or MEA) "
814 "is detected. Inode %lu/%u\n",
815 inode->i_ino, inode->i_generation);
821 int mds_get_md(struct obd_device *obd, struct inode *inode,
822 void *md, int *size, int lock, int mea)
831 rc = fsfilt_get_md(obd, inode, md, *size,
832 (mea ? EA_MEA : EA_LOV));
834 CERROR("Error %d reading eadata for ino %lu\n",
838 rc = mds_convert_md(obd, inode, md,
854 /* Call with lock=1 if you want mds_pack_md to take the i_sem.
855 * Call with lock=0 if the caller has already taken the i_sem. */
856 int mds_pack_md(struct obd_device *obd, struct lustre_msg *msg, int offset,
857 struct mds_body *body, struct inode *inode, int lock, int mea)
859 struct mds_obd *mds = &obd->u.mds;
865 lmm = lustre_msg_buf(msg, offset, 0);
867 /* Some problem with getting eadata when I sized the reply
869 CDEBUG(D_INFO, "no space reserved for inode %lu MD\n",
873 lmm_size = msg->buflens[offset];
875 /* I don't really like this, but it is a sanity check on the client
876 * MD request. However, if the client doesn't know how much space
877 * to reserve for the MD, it shouldn't be bad to have too much space.
879 if (lmm_size > mds->mds_max_mdsize) {
880 CWARN("Reading MD for inode %lu of %d bytes > max %d\n",
881 inode->i_ino, lmm_size, mds->mds_max_mdsize);
885 rc = mds_get_md(obd, inode, lmm, &lmm_size, lock, mea);
887 if (S_ISDIR(inode->i_mode))
888 body->valid |= OBD_MD_FLDIREA;
890 body->valid |= OBD_MD_FLEASIZE;
893 body->valid |= OBD_MD_MEA;
895 body->eadatasize = lmm_size;
901 int mds_pack_link(struct dentry *dentry, struct ptlrpc_request *req,
902 struct mds_body *repbody, int reply_off)
904 struct inode *inode = dentry->d_inode;
909 symname = lustre_msg_buf(req->rq_repmsg, reply_off + 1,0);
910 LASSERT(symname != NULL);
911 len = req->rq_repmsg->buflens[reply_off + 1];
913 rc = inode->i_op->readlink(dentry, symname, len);
915 CERROR("readlink failed: %d\n", rc);
916 } else if (rc != len - 1) {
917 CERROR ("Unexpected readlink rc %d: expecting %d\n",
921 CDEBUG(D_INODE, "read symlink dest %s\n", symname);
922 repbody->valid |= OBD_MD_LINKNAME;
923 repbody->eadatasize = rc + 1;
924 symname[rc] = 0; /* NULL terminate */
931 int mds_pack_ea(struct dentry *dentry, struct ptlrpc_request *req,
932 struct mds_body *repbody, int req_off, int reply_off)
934 struct inode *inode = dentry->d_inode;
940 ea_name = lustre_msg_string(req->rq_reqmsg, req_off + 1, 0);
941 len = req->rq_repmsg->buflens[reply_off + 1];
943 value = lustre_msg_buf(req->rq_repmsg, reply_off + 1, len);
946 if (inode->i_op && inode->i_op->getxattr)
947 rc = inode->i_op->getxattr(dentry, ea_name, value, len);
950 if (rc != -ENODATA && rc != -EOPNOTSUPP)
951 CERROR("getxattr failed: %d", rc);
953 repbody->valid |= OBD_MD_FLEA;
954 repbody->eadatasize = rc;
961 int mds_pack_ealist(struct dentry *dentry, struct ptlrpc_request *req,
962 struct mds_body *repbody, int reply_off)
964 struct inode *inode = dentry->d_inode;
969 len = req->rq_repmsg->buflens[reply_off + 1];
971 value = lustre_msg_buf(req->rq_repmsg, reply_off + 1, len);
974 if (inode->i_op && inode->i_op->getxattr)
975 rc = inode->i_op->listxattr(dentry, value, len);
978 CERROR("listxattr failed: %d", rc);
980 repbody->valid |= OBD_MD_FLEALIST;
981 repbody->eadatasize = rc;
987 int mds_pack_acl(struct obd_device *obd, struct lustre_msg *repmsg, int offset,
988 struct mds_body *body, struct inode *inode)
990 struct dentry de = { .d_inode = inode };
991 __u32 buflen, *sizep;
996 if (!inode->i_op->getxattr)
999 buflen = repmsg->buflens[offset + 1];
1000 buf = lustre_msg_buf(repmsg, offset + 1, buflen);
1002 size = inode->i_op->getxattr(&de, XATTR_NAME_ACL_ACCESS, buf, buflen);
1003 if (size == -ENODATA || size == -EOPNOTSUPP)
1009 sizep = lustre_msg_buf(repmsg, offset, 4);
1011 CERROR("can't locate returned acl size buf\n");
1015 *sizep = cpu_to_le32(size);
1016 body->valid |= OBD_MD_FLACL_ACCESS;
1022 * here we take simple rule: once uid/fsuid is root, we also squash
1023 * the gid/fsgid, don't care setuid/setgid attributes.
1025 int mds_squash_root(struct mds_obd *mds, struct mds_req_sec_desc *rsd,
1028 if (!mds->mds_squash_uid || *peernid == mds->mds_nosquash_nid)
1031 if (rsd->rsd_uid && rsd->rsd_fsuid)
1034 CDEBUG(D_SEC, "squash req from "LPX64":"
1035 "(%u:%u-%u:%u/%x)=>(%u:%u-%u:%u/%x)\n", *peernid,
1036 rsd->rsd_uid, rsd->rsd_gid,
1037 rsd->rsd_fsuid, rsd->rsd_fsgid, rsd->rsd_cap,
1038 rsd->rsd_uid ? rsd->rsd_uid : mds->mds_squash_uid,
1039 rsd->rsd_uid ? rsd->rsd_gid : mds->mds_squash_gid,
1040 rsd->rsd_fsuid ? rsd->rsd_fsuid : mds->mds_squash_uid,
1041 rsd->rsd_fsuid ? rsd->rsd_fsgid : mds->mds_squash_gid,
1042 rsd->rsd_cap & ~CAP_FS_MASK);
1044 if (rsd->rsd_uid == 0) {
1045 rsd->rsd_uid = mds->mds_squash_uid;
1046 rsd->rsd_gid = mds->mds_squash_gid;
1048 if (rsd->rsd_fsuid == 0) {
1049 rsd->rsd_fsuid = mds->mds_squash_uid;
1050 rsd->rsd_fsgid = mds->mds_squash_gid;
1052 rsd->rsd_cap &= ~CAP_FS_MASK;
1057 static int mds_getattr_internal(struct obd_device *obd, struct dentry *dentry,
1058 struct ptlrpc_request *req, int req_off,
1059 struct mds_body *reqbody, int reply_off)
1061 struct mds_export_data *med = &req->rq_export->u.eu_mds_data;
1062 struct inode *inode = dentry->d_inode;
1063 struct mds_body *body;
1067 if (inode == NULL && !(dentry->d_flags & DCACHE_CROSS_REF))
1070 body = lustre_msg_buf(req->rq_repmsg, reply_off, sizeof(*body));
1071 LASSERT(body != NULL); /* caller prepped reply */
1073 if (dentry->d_flags & DCACHE_CROSS_REF) {
1074 mds_pack_dentry2body(obd, body, dentry,
1075 (reqbody->valid & OBD_MD_FID) ? 1 : 0);
1076 CDEBUG(D_OTHER, "cross reference: "DLID4"\n",
1081 mds_pack_inode2body(obd, body, inode,
1082 (reqbody->valid & OBD_MD_FID) ? 1 : 0);
1084 if ((S_ISREG(inode->i_mode) && (reqbody->valid & OBD_MD_FLEASIZE)) ||
1085 (S_ISDIR(inode->i_mode) && (reqbody->valid & OBD_MD_FLDIREA))) {
1087 /* guessing what kind og attribute do we need. */
1088 int is_mea = (S_ISDIR(inode->i_mode) &&
1089 (reqbody->valid & OBD_MD_MEA) != 0);
1091 rc = mds_pack_md(obd, req->rq_repmsg, reply_off + 1,
1092 body, inode, 1, is_mea);
1094 /* if we have LOV EA data, the OST holds size, atime, mtime. */
1095 if (!(body->valid & OBD_MD_FLEASIZE) &&
1096 !(body->valid & OBD_MD_FLDIREA))
1097 body->valid |= (OBD_MD_FLSIZE | OBD_MD_FLBLOCKS |
1098 OBD_MD_FLATIME | OBD_MD_FLMTIME);
1099 } else if (S_ISLNK(inode->i_mode) &&
1100 (reqbody->valid & OBD_MD_LINKNAME) != 0) {
1101 rc = mds_pack_link(dentry, req, body, reply_off);
1102 } else if (reqbody->valid & OBD_MD_FLEA) {
1103 rc = mds_pack_ea(dentry, req, body, req_off, reply_off);
1104 } else if (reqbody->valid & OBD_MD_FLEALIST) {
1105 rc = mds_pack_ealist(dentry, req, body, reply_off);
1108 if (reqbody->valid & OBD_MD_FLACL_ACCESS) {
1109 int inc = (reqbody->valid & OBD_MD_FLEASIZE) ? 2 : 1;
1110 rc = mds_pack_acl(obd, req->rq_repmsg, reply_off + inc,
1115 mds_body_do_reverse_map(med, body);
1120 static int mds_getattr_pack_msg_cf(struct ptlrpc_request *req,
1121 struct dentry *dentry,
1124 int rc = 0, size[1] = {sizeof(struct mds_body)};
1127 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_GETATTR_PACK)) {
1128 CERROR("failed MDS_GETATTR_PACK test\n");
1129 req->rq_status = -ENOMEM;
1133 rc = lustre_pack_reply(req, 1, size, NULL);
1135 CERROR("lustre_pack_reply failed: rc %d\n", rc);
1136 GOTO(out, req->rq_status = rc);
1144 static int mds_getattr_pack_msg(struct ptlrpc_request *req, struct dentry *de,
1147 struct inode *inode = de->d_inode;
1148 struct mds_obd *mds = mds_req2mds(req);
1149 struct mds_body *body;
1150 int rc = 0, size[4] = {sizeof(*body)}, bufcount = 1;
1153 body = lustre_msg_buf(req->rq_reqmsg, offset, sizeof(*body));
1154 LASSERT(body != NULL); /* checked by caller */
1155 LASSERT_REQSWABBED(req, offset); /* swabbed by caller */
1157 if ((S_ISREG(inode->i_mode) && (body->valid & OBD_MD_FLEASIZE)) ||
1158 (S_ISDIR(inode->i_mode) && (body->valid & OBD_MD_FLDIREA))) {
1161 down(&inode->i_sem);
1162 rc = fsfilt_get_md(req->rq_export->exp_obd, inode, NULL, 0,
1163 ((body->valid & OBD_MD_MEA) ? EA_MEA : EA_LOV));
1166 if (rc != -ENODATA && rc != -EOPNOTSUPP)
1167 CERROR("error getting inode %lu MD: rc = %d\n",
1170 } else if (rc > mds->mds_max_mdsize) {
1172 CERROR("MD size %d larger than maximum possible %u\n",
1173 rc, mds->mds_max_mdsize);
1175 size[bufcount] = rc;
1178 } else if (S_ISLNK(inode->i_mode) && (body->valid & OBD_MD_LINKNAME)) {
1179 if (inode->i_size + 1 != body->eadatasize)
1180 CERROR("symlink size: %Lu, reply space: %d\n",
1181 inode->i_size + 1, body->eadatasize);
1182 size[bufcount] = min_t(int, inode->i_size+1, body->eadatasize);
1184 CDEBUG(D_INODE, "symlink size: %Lu, reply space: %d\n",
1185 inode->i_size + 1, body->eadatasize);
1186 } else if ((body->valid & OBD_MD_FLEA)) {
1187 char *ea_name = lustre_msg_string(req->rq_reqmsg,
1190 if (inode->i_op && inode->i_op->getxattr)
1191 rc = inode->i_op->getxattr(de, ea_name, NULL, 0);
1194 if (rc != -ENODATA && rc != -EOPNOTSUPP)
1195 CERROR("error getting inode %lu EA: rc = %d\n",
1199 size[bufcount] = min_t(int, body->eadatasize, rc);
1202 } else if (body->valid & OBD_MD_FLEALIST) {
1204 if (inode->i_op && inode->i_op->getxattr)
1205 rc = inode->i_op->listxattr(de, NULL, 0);
1208 if (rc != -ENODATA && rc != -EOPNOTSUPP)
1209 CERROR("error getting inode %lu EA: rc = %d\n",
1213 size[bufcount] = min_t(int, body->eadatasize, rc);
1218 /* may co-exist with OBD_MD_FLEASIZE */
1219 if (body->valid & OBD_MD_FLACL_ACCESS) {
1220 size[bufcount++] = 4;
1221 size[bufcount++] = xattr_acl_size(LL_ACL_MAX_ENTRIES);
1224 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_GETATTR_PACK)) {
1225 CERROR("failed MDS_GETATTR_PACK test\n");
1226 req->rq_status = -ENOMEM;
1227 GOTO(out, rc = -ENOMEM);
1230 rc = lustre_pack_reply(req, bufcount, size, NULL);
1232 CERROR("out of memory\n");
1233 GOTO(out, req->rq_status = rc);
1241 int mds_check_mds_num(struct obd_device *obd, struct inode *inode,
1242 char *name, int namelen)
1244 struct mea *mea = NULL;
1245 int mea_size, rc = 0;
1248 rc = mds_md_get_attr(obd, inode, &mea, &mea_size);
1253 * dir is already splitted, check if requested filename should
1254 * live at this MDS or at another one.
1256 int i = mea_name2idx(mea, name, namelen - 1);
1257 if (mea->mea_master != id_group(&mea->mea_ids[i])) {
1259 "inapropriate MDS(%d) for %s. should be "
1260 "%lu(%d)\n", mea->mea_master, name,
1261 (unsigned long)id_group(&mea->mea_ids[i]), i);
1267 OBD_FREE(mea, mea_size);
1271 static int mds_getattr_lock(struct ptlrpc_request *req, int offset,
1272 struct lustre_handle *child_lockh, int child_part)
1274 struct obd_device *obd = req->rq_export->exp_obd;
1275 struct mds_obd *mds = &obd->u.mds;
1276 struct ldlm_reply *rep = NULL;
1277 struct lvfs_run_ctxt saved;
1278 struct mds_req_sec_desc *rsd;
1279 struct mds_body *body;
1280 struct dentry *dparent = NULL, *dchild = NULL;
1281 struct lvfs_ucred uc = {NULL, NULL,};
1282 struct lustre_handle parent_lockh[2] = {{0}, {0}};
1283 unsigned int namesize;
1284 int rc = 0, cleanup_phase = 0, resent_req = 0, update_mode, reply_offset;
1288 LASSERT(!strcmp(obd->obd_type->typ_name, LUSTRE_MDS_NAME));
1289 MD_COUNTER_INCREMENT(obd, getattr_lock);
1291 rsd = lustre_swab_mds_secdesc(req, MDS_REQ_SECDESC_OFF);
1293 CERROR("Can't unpack security desc\n");
1297 /* swab now, before anyone looks inside the request. */
1298 body = lustre_swab_reqbuf(req, offset, sizeof(*body),
1299 lustre_swab_mds_body);
1301 CERROR("Can't swab mds_body\n");
1302 GOTO(cleanup, rc = -EFAULT);
1305 LASSERT_REQSWAB(req, offset + 1);
1306 name = lustre_msg_string(req->rq_reqmsg, offset + 1, 0);
1308 CERROR("Can't unpack name\n");
1309 GOTO(cleanup, rc = -EFAULT);
1311 namesize = req->rq_reqmsg->buflens[offset + 1];
1313 /* namesize less than 2 means we have empty name, probably came from
1314 revalidate by cfid, so no point in having name to be set */
1318 LASSERT (offset == 1 || offset == 3);
1320 rep = lustre_msg_buf(req->rq_repmsg, 0, sizeof (*rep));
1326 rc = mds_init_ucred(&uc, req, rsd);
1331 push_ctxt(&saved, &obd->obd_lvfs_ctxt, &uc);
1332 cleanup_phase = 1; /* kernel context */
1333 intent_set_disposition(rep, DISP_LOOKUP_EXECD);
1335 LASSERT(namesize > 0);
1336 if (child_lockh->cookie != 0) {
1337 LASSERT(lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT);
1342 if (body->valid == OBD_MD_FLID) {
1343 struct mds_body *mds_reply;
1344 int size = sizeof(*mds_reply);
1348 dparent = mds_id2dentry(obd, &body->id1, NULL);
1349 if (IS_ERR(dparent)) {
1350 rc = PTR_ERR(dparent);
1355 * the user requested ONLY the inode number, so do a raw lookup.
1357 rc = lustre_pack_reply(req, 1, &size, NULL);
1359 CERROR("out of memory\n");
1363 dir = dparent->d_inode;
1364 LASSERT(dir->i_op->lookup_raw != NULL);
1365 rc = dir->i_op->lookup_raw(dir, name, namesize - 1, &inum);
1367 mds_reply = lustre_msg_buf(req->rq_repmsg, 0,
1368 sizeof(*mds_reply));
1370 id_ino(&mds_reply->id1) = inum;
1371 mds_reply->valid = OBD_MD_FLID;
1376 if (resent_req == 0) {
1377 LASSERT(id_fid(&body->id1) != 0);
1379 rc = mds_get_parent_child_locked(obd, mds, &body->id1,
1380 parent_lockh, &dparent,
1382 MDS_INODELOCK_UPDATE,
1385 child_lockh, &dchild,
1386 LCK_PR, child_part);
1390 cleanup_phase = 2; /* dchild, dparent, locks */
1393 * let's make sure this name should leave on this mds
1396 rc = mds_check_mds_num(obd, dparent->d_inode, name, namesize);
1400 /* we have no dentry here, drop LOOKUP bit */
1401 /* FIXME: we need MDS_INODELOCK_LOOKUP or not. */
1402 child_part &= ~MDS_INODELOCK_LOOKUP;
1403 CDEBUG(D_OTHER, "%s: retrieve attrs for "DLID4"\n",
1404 obd->obd_name, OLID4(&body->id1));
1406 dchild = mds_id2locked_dentry(obd, &body->id1, NULL,
1407 LCK_PR, parent_lockh,
1410 MDS_INODELOCK_UPDATE);
1411 if (IS_ERR(dchild)) {
1412 CERROR("can't find inode with id "DLID4", err = %d\n",
1413 OLID4(&body->id1), (int)PTR_ERR(dchild));
1414 GOTO(cleanup, rc = PTR_ERR(dchild));
1416 memcpy(child_lockh, parent_lockh, sizeof(parent_lockh[0]));
1419 struct ldlm_lock *granted_lock;
1421 DEBUG_REQ(D_DLMTRACE, req, "resent, not enqueuing new locks");
1422 granted_lock = ldlm_handle2lock(child_lockh);
1424 LASSERTF(granted_lock != NULL, LPU64"/%lu lockh "LPX64"\n",
1425 id_fid(&body->id1), (unsigned long)id_group(&body->id1),
1426 child_lockh->cookie);
1429 /* usual named request */
1430 dparent = mds_id2dentry(obd, &body->id1, NULL);
1431 LASSERT(!IS_ERR(dparent));
1432 dchild = ll_lookup_one_len(name, dparent, namesize - 1);
1433 if (IS_ERR(dchild)) {
1434 DEBUG_REQ(D_ERROR, req, "resent, not enqueuing new locks");
1435 CDEBUG(D_ERROR, "lock against [%lu:%lu]/%*s\n",
1436 (unsigned long) id_ino(&body->id1),
1437 (unsigned long) id_gen(&body->id1),
1438 namesize - 1, name);
1440 LASSERT(!IS_ERR(dchild));
1442 /* client wants to get attr. by id */
1443 dchild = mds_id2dentry(obd, &body->id1, NULL);
1444 if (IS_ERR(dchild)) {
1445 DEBUG_REQ(D_ERROR, req, "resent, not enqueuing new locks");
1446 CDEBUG(D_ERROR, "lock against [%lu:%lu]\n",
1447 (unsigned long) id_ino(&body->id1),
1448 (unsigned long) id_gen(&body->id1));
1450 LASSERT(!IS_ERR(dchild));
1452 LDLM_LOCK_PUT(granted_lock);
1455 cleanup_phase = 2; /* dchild, dparent, locks */
1457 if (!DENTRY_VALID(dchild)) {
1458 intent_set_disposition(rep, DISP_LOOKUP_NEG);
1460 * in the intent case, the policy clears this error: the
1461 * disposition is enough.
1466 intent_set_disposition(rep, DISP_LOOKUP_POS);
1469 if (req->rq_repmsg == NULL) {
1470 if (dchild->d_flags & DCACHE_CROSS_REF)
1471 rc = mds_getattr_pack_msg_cf(req, dchild, offset);
1473 rc = mds_getattr_pack_msg(req, dchild, offset);
1475 CERROR ("mds_getattr_pack_msg: %d\n", rc);
1480 rc = mds_getattr_internal(obd, dchild, req, offset, body, reply_offset);
1481 GOTO(cleanup, rc); /* returns the lock to the client */
1484 switch (cleanup_phase) {
1486 if (resent_req == 0) {
1487 if (rc && DENTRY_VALID(dchild))
1488 ldlm_lock_decref(child_lockh, LCK_PR);
1490 ldlm_lock_decref(parent_lockh, LCK_PR);
1492 if (parent_lockh[1].cookie != 0)
1493 ldlm_lock_decref(parent_lockh + 1, update_mode);
1500 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, &uc);
1502 mds_exit_ucred(&uc);
1507 static int mds_getattr(struct ptlrpc_request *req, int offset)
1509 struct obd_device *obd = req->rq_export->exp_obd;
1510 struct lvfs_run_ctxt saved;
1512 struct mds_req_sec_desc *rsd;
1513 struct mds_body *body;
1514 struct lvfs_ucred uc = {NULL, NULL,};
1518 MD_COUNTER_INCREMENT(obd, getattr);
1520 rsd = lustre_swab_mds_secdesc(req, MDS_REQ_SECDESC_OFF);
1522 CERROR("Can't unpack security desc\n");
1526 body = lustre_swab_reqbuf(req, offset, sizeof(*body),
1527 lustre_swab_mds_body);
1529 CERROR ("Can't unpack body\n");
1533 rc = mds_init_ucred(&uc, req, rsd);
1535 mds_exit_ucred(&uc);
1539 push_ctxt(&saved, &obd->obd_lvfs_ctxt, &uc);
1540 de = mds_id2dentry(obd, &body->id1, NULL);
1542 rc = req->rq_status = PTR_ERR(de);
1546 rc = mds_getattr_pack_msg(req, de, offset);
1548 CERROR("mds_getattr_pack_msg: %d\n", rc);
1552 req->rq_status = mds_getattr_internal(obd, de, req, offset, body, 0);
1557 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, &uc);
1558 mds_exit_ucred(&uc);
1562 static int mds_obd_statfs(struct obd_device *obd, struct obd_statfs *osfs,
1563 unsigned long max_age)
1568 spin_lock(&obd->obd_osfs_lock);
1569 rc = fsfilt_statfs(obd, obd->u.mds.mds_sb, max_age);
1571 memcpy(osfs, &obd->obd_osfs, sizeof(*osfs));
1572 spin_unlock(&obd->obd_osfs_lock);
1577 static int mds_statfs(struct ptlrpc_request *req)
1579 struct obd_device *obd = req->rq_export->exp_obd;
1580 int rc, size = sizeof(struct obd_statfs);
1583 /* This will trigger a watchdog timeout */
1584 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_STATFS_LCW_SLEEP,
1585 (MDS_SERVICE_WATCHDOG_TIMEOUT / 1000) + 1);
1587 rc = lustre_pack_reply(req, 1, &size, NULL);
1588 if (rc || OBD_FAIL_CHECK(OBD_FAIL_MDS_STATFS_PACK)) {
1589 CERROR("mds: statfs lustre_pack_reply failed: rc = %d\n", rc);
1593 OBD_COUNTER_INCREMENT(obd, statfs);
1595 /* We call this so that we can cache a bit - 1 jiffie worth */
1596 rc = mds_obd_statfs(obd, lustre_msg_buf(req->rq_repmsg, 0, size),
1599 CERROR("mds_obd_statfs failed: rc %d\n", rc);
1605 req->rq_status = rc;
1609 static int mds_sync(struct ptlrpc_request *req, int offset)
1611 struct obd_device *obd = req->rq_export->exp_obd;
1612 struct mds_obd *mds = &obd->u.mds;
1613 struct mds_body *body;
1614 int rc, size = sizeof(*body);
1617 body = lustre_swab_reqbuf(req, offset, sizeof(*body),
1618 lustre_swab_mds_body);
1620 GOTO(out, rc = -EPROTO);
1622 rc = lustre_pack_reply(req, 1, &size, NULL);
1623 if (rc || OBD_FAIL_CHECK(OBD_FAIL_MDS_SYNC_PACK)) {
1624 CERROR("fsync lustre_pack_reply failed: rc = %d\n", rc);
1628 if (id_ino(&body->id1) == 0) {
1629 /* an id of zero is taken to mean "sync whole filesystem" */
1630 rc = fsfilt_sync(obd, mds->mds_sb);
1634 /* just any file to grab fsync method - "file" arg unused */
1635 struct file *file = mds->mds_rcvd_filp;
1636 struct mds_body *rep_body;
1639 de = mds_id2dentry(obd, &body->id1, NULL);
1641 GOTO(out, rc = PTR_ERR(de));
1643 rc = file->f_op->fsync(NULL, de, 1);
1647 rep_body = lustre_msg_buf(req->rq_repmsg, 0, sizeof(*rep_body));
1648 mds_pack_inode2body(obd, rep_body, de->d_inode,
1649 (body->valid & OBD_MD_FID) ? 1 : 0);
1655 req->rq_status = rc;
1659 /* mds_readpage does not take a DLM lock on the inode, because the client must
1660 * already have a PR lock.
1662 * If we were to take another one here, a deadlock will result, if another
1663 * thread is already waiting for a PW lock. */
1664 static int mds_readpage(struct ptlrpc_request *req, int offset)
1666 struct obd_device *obd = req->rq_export->exp_obd;
1667 struct vfsmount *mnt;
1670 struct mds_req_sec_desc *rsd;
1671 struct mds_body *body, *repbody;
1672 struct lvfs_run_ctxt saved;
1673 int rc, size = sizeof(*repbody);
1674 struct lvfs_ucred uc = {NULL, NULL,};
1677 rc = lustre_pack_reply(req, 1, &size, NULL);
1678 if (rc || OBD_FAIL_CHECK(OBD_FAIL_MDS_READPAGE_PACK)) {
1679 CERROR("mds: out of memory\n");
1680 GOTO(out, rc = -ENOMEM);
1683 rsd = lustre_swab_mds_secdesc(req, MDS_REQ_SECDESC_OFF);
1685 CERROR("Can't unpack security desc\n");
1686 GOTO (out, rc = -EFAULT);
1689 body = lustre_swab_reqbuf(req, offset, sizeof(*body),
1690 lustre_swab_mds_body);
1692 CERROR("Can't unpack body\n");
1693 GOTO (out, rc = -EFAULT);
1696 rc = mds_init_ucred(&uc, req, rsd);
1701 push_ctxt(&saved, &obd->obd_lvfs_ctxt, &uc);
1702 de = mds_id2dentry(obd, &body->id1, &mnt);
1704 GOTO(out_pop, rc = PTR_ERR(de));
1706 CDEBUG(D_INODE, "ino %lu\n", de->d_inode->i_ino);
1708 file = dentry_open(de, mnt, O_RDONLY | O_LARGEFILE);
1709 /* note: in case of an error, dentry_open puts dentry */
1711 GOTO(out_pop, rc = PTR_ERR(file));
1713 /* body->size is actually the offset -eeb */
1714 if ((body->size & (de->d_inode->i_blksize - 1)) != 0) {
1715 CERROR("offset "LPU64" not on a block boundary of %lu\n",
1716 body->size, de->d_inode->i_blksize);
1717 GOTO(out_file, rc = -EFAULT);
1720 /* body->nlink is actually the #bytes to read -eeb */
1721 if (body->nlink & (de->d_inode->i_blksize - 1)) {
1722 CERROR("size %u is not multiple of blocksize %lu\n",
1723 body->nlink, de->d_inode->i_blksize);
1724 GOTO(out_file, rc = -EFAULT);
1727 repbody = lustre_msg_buf(req->rq_repmsg, 0, sizeof (*repbody));
1728 repbody->size = file->f_dentry->d_inode->i_size;
1729 repbody->valid = OBD_MD_FLSIZE;
1731 /* to make this asynchronous make sure that the handling function
1732 doesn't send a reply when this function completes. Instead a
1733 callback function would send the reply */
1734 /* body->size is actually the offset -eeb */
1735 rc = mds_sendpage(req, file, body->size, body->nlink);
1739 filp_close(file, 0);
1741 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, &uc);
1743 mds_exit_ucred(&uc);
1744 req->rq_status = rc;
1748 /* update master MDS ID, which is stored in local inode EA. */
1749 int mds_update_mid(struct obd_device *obd, struct lustre_id *id,
1750 void *data, int data_len)
1752 struct mds_obd *mds = &obd->u.mds;
1753 struct dentry *dentry;
1761 dentry = mds_id2dentry(obd, id, NULL);
1763 GOTO(out, rc = PTR_ERR(dentry));
1765 if (!dentry->d_inode) {
1766 CERROR("Can't find object "DLID4".\n",
1768 GOTO(out_dentry, rc = -EINVAL);
1771 handle = fsfilt_start(obd, dentry->d_inode,
1772 FSFILT_OP_SETATTR, NULL);
1774 GOTO(out_dentry, rc = PTR_ERR(handle));
1776 rc = mds_update_inode_mid(obd, dentry->d_inode, handle,
1777 (struct lustre_id *)data);
1779 CERROR("Can't update inode "DLID4" master id, "
1780 "error = %d.\n", OLID4(id), rc);
1781 GOTO(out_commit, rc);
1786 fsfilt_commit(obd, mds->mds_sb, dentry->d_inode,
1793 EXPORT_SYMBOL(mds_update_mid);
1795 /* read master MDS ID, which is stored in local inode EA. */
1796 int mds_read_mid(struct obd_device *obd, struct lustre_id *id,
1797 void *data, int data_len)
1799 struct dentry *dentry;
1806 dentry = mds_id2dentry(obd, id, NULL);
1808 GOTO(out, rc = PTR_ERR(dentry));
1810 if (!dentry->d_inode) {
1811 CERROR("Can't find object "DLID4".\n",
1813 GOTO(out_dentry, rc = -EINVAL);
1816 down(&dentry->d_inode->i_sem);
1817 rc = mds_read_inode_mid(obd, dentry->d_inode,
1818 (struct lustre_id *)data);
1819 up(&dentry->d_inode->i_sem);
1821 CERROR("Can't read inode "DLID4" master id, "
1822 "error = %d.\n", OLID4(id), rc);
1823 GOTO(out_dentry, rc);
1832 EXPORT_SYMBOL(mds_read_mid);
1834 int mds_reint(struct ptlrpc_request *req, int offset,
1835 struct lustre_handle *lockh)
1837 struct mds_update_record *rec;
1838 struct mds_req_sec_desc *rsd;
1842 OBD_ALLOC(rec, sizeof(*rec));
1846 rsd = lustre_swab_mds_secdesc(req, MDS_REQ_SECDESC_OFF);
1848 CERROR("Can't unpack security desc\n");
1849 GOTO(out, rc = -EFAULT);
1852 rc = mds_update_unpack(req, offset, rec);
1853 if (rc || OBD_FAIL_CHECK(OBD_FAIL_MDS_REINT_UNPACK)) {
1854 CERROR("invalid record\n");
1855 GOTO(out, req->rq_status = -EINVAL);
1858 rc = mds_init_ucred(&rec->ur_uc, req, rsd);
1863 /* rc will be used to interrupt a for loop over multiple records */
1864 rc = mds_reint_rec(rec, offset, req, lockh);
1867 mds_exit_ucred(&rec->ur_uc);
1868 OBD_FREE(rec, sizeof(*rec));
1872 static int mds_filter_recovery_request(struct ptlrpc_request *req,
1873 struct obd_device *obd, int *process)
1875 switch (req->rq_reqmsg->opc) {
1876 case MDS_CONNECT: /* This will never get here, but for completeness. */
1877 case OST_CONNECT: /* This will never get here, but for completeness. */
1878 case MDS_DISCONNECT:
1879 case OST_DISCONNECT:
1884 case MDS_SYNC: /* used in unmounting */
1889 *process = target_queue_recovery_request(req, obd);
1893 DEBUG_REQ(D_ERROR, req, "not permitted during recovery");
1895 /* XXX what should we set rq_status to here? */
1896 req->rq_status = -EAGAIN;
1897 RETURN(ptlrpc_error(req));
1901 static char *reint_names[] = {
1902 [REINT_SETATTR] "setattr",
1903 [REINT_CREATE] "create",
1904 [REINT_LINK] "link",
1905 [REINT_UNLINK] "unlink",
1906 [REINT_RENAME] "rename",
1907 [REINT_OPEN] "open",
1910 #define FILTER_VALID_FLAGS (OBD_MD_FLTYPE | OBD_MD_FLMODE | OBD_MD_FLGENER | \
1911 OBD_MD_FLSIZE | OBD_MD_FLBLOCKS | OBD_MD_FLBLKSZ| \
1912 OBD_MD_FLATIME | OBD_MD_FLMTIME | OBD_MD_FLCTIME| \
1915 static void reconstruct_create(struct ptlrpc_request *req)
1917 struct mds_export_data *med = &req->rq_export->exp_mds_data;
1918 struct mds_client_data *mcd = med->med_mcd;
1919 struct dentry *dentry;
1920 struct ost_body *body;
1921 struct lustre_id id;
1925 /* copy rc, transno and disp; steal locks */
1926 mds_req_from_mcd(req, mcd);
1927 if (req->rq_status) {
1935 id_ino(&id) = mcd->mcd_last_data;
1936 LASSERT(id_ino(&id) != 0);
1938 dentry = mds_id2dentry(req2obd(req), &id, NULL);
1939 if (IS_ERR(dentry)) {
1940 CERROR("can't find inode "LPU64"\n", id_ino(&id));
1941 req->rq_status = PTR_ERR(dentry);
1946 CWARN("reconstruct reply for x"LPU64" (remote ino) "LPU64" -> %lu/%u\n",
1947 req->rq_xid, id_ino(&id), dentry->d_inode->i_ino,
1948 dentry->d_inode->i_generation);
1950 body = lustre_msg_buf(req->rq_repmsg, 0, sizeof (*body));
1951 obdo_from_inode(&body->oa, dentry->d_inode, FILTER_VALID_FLAGS);
1952 body->oa.o_id = dentry->d_inode->i_ino;
1953 body->oa.o_generation = dentry->d_inode->i_generation;
1954 body->oa.o_valid |= OBD_MD_FLID | OBD_MD_FLGENER;
1956 down(&dentry->d_inode->i_sem);
1957 rc = mds_read_inode_sid(req2obd(req), dentry->d_inode, &id);
1958 up(&dentry->d_inode->i_sem);
1960 CERROR("Can't read inode self id, inode %lu, "
1961 "rc %d\n", dentry->d_inode->i_ino, rc);
1965 body->oa.o_fid = id_fid(&id);
1966 body->oa.o_mds = id_group(&id);
1972 static int mdt_obj_create(struct ptlrpc_request *req)
1974 struct obd_device *obd = req->rq_export->exp_obd;
1975 struct mds_obd *mds = &obd->u.mds;
1976 struct ost_body *body, *repbody;
1977 char idname[LL_ID_NAMELEN];
1978 int size = sizeof(*repbody);
1979 struct inode *parent_inode;
1980 struct lvfs_run_ctxt saved;
1981 int rc, cleanup_phase = 0;
1982 struct dentry *new = NULL;
1983 struct dentry_params dp;
1984 int mealen, flags = 0;
1985 struct lvfs_ucred uc;
1986 struct lustre_id id;
1988 void *handle = NULL;
1989 unsigned long cr_inum = 0;
1992 DEBUG_REQ(D_HA, req, "create remote object");
1993 parent_inode = mds->mds_unnamed_dir->d_inode;
1995 body = lustre_swab_reqbuf(req, 0, sizeof(*body),
1996 lustre_swab_ost_body);
2000 rc = lustre_pack_reply(req, 1, &size, NULL);
2004 MDS_CHECK_RESENT(req, reconstruct_create(req));
2007 uc.luc_ginfo = NULL;
2008 uc.luc_uid = body->oa.o_uid;
2009 uc.luc_gid = body->oa.o_gid;
2010 uc.luc_fsuid = body->oa.o_uid;
2011 uc.luc_fsgid = body->oa.o_gid;
2013 push_ctxt(&saved, &obd->obd_lvfs_ctxt, &uc);
2014 repbody = lustre_msg_buf(req->rq_repmsg, 0, sizeof(*repbody));
2016 /* in REPLAY case inum should be given (client or other MDS fills it) */
2017 if (body->oa.o_id && ((body->oa.o_flags & OBD_FL_RECREATE_OBJS) ||
2018 (lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY))) {
2020 * this is re-create request from MDS holding directory name.
2021 * we have to lookup given ino/gen first. if it exists (good
2022 * case) then there is nothing to do. if it does not then we
2023 * have to recreate it.
2025 id_ino(&id) = body->oa.o_id;
2026 id_gen(&id) = body->oa.o_generation;
2028 new = mds_id2dentry(obd, &id, NULL);
2029 if (!IS_ERR(new) && new->d_inode) {
2030 struct lustre_id sid;
2032 CWARN("mkdir() repairing is on its way: %lu/%lu\n",
2033 (unsigned long)id_ino(&id), (unsigned long)id_gen(&id));
2035 obdo_from_inode(&repbody->oa, new->d_inode,
2036 FILTER_VALID_FLAGS);
2038 repbody->oa.o_id = new->d_inode->i_ino;
2039 repbody->oa.o_generation = new->d_inode->i_generation;
2040 repbody->oa.o_valid |= OBD_MD_FLID | OBD_MD_FLGENER;
2043 down(&new->d_inode->i_sem);
2044 rc = mds_read_inode_sid(obd, new->d_inode, &sid);
2045 up(&new->d_inode->i_sem);
2047 CERROR("Can't read inode self id "
2048 "inode %lu, rc %d.\n",
2049 new->d_inode->i_ino, rc);
2053 repbody->oa.o_fid = id_fid(&sid);
2054 repbody->oa.o_mds = id_group(&sid);
2055 LASSERT(id_fid(&sid) != 0);
2058 * here we could use fid passed in body->oa.o_fid and
2059 * thus avoid mds_read_inode_sid().
2061 cr_inum = new->d_inode->i_ino;
2062 GOTO(cleanup, rc = 0);
2066 down(&parent_inode->i_sem);
2067 handle = fsfilt_start(obd, parent_inode, FSFILT_OP_MKDIR, NULL);
2068 if (IS_ERR(handle)) {
2069 up(&parent_inode->i_sem);
2070 CERROR("fsfilt_start() failed, rc = %d\n",
2071 (int)PTR_ERR(handle));
2072 GOTO(cleanup, rc = PTR_ERR(handle));
2074 cleanup_phase = 1; /* transaction */
2077 rc = sprintf(idname, "%u.%u", ll_insecure_random_int(), current->pid);
2078 new = lookup_one_len(idname, mds->mds_unnamed_dir, rc);
2080 CERROR("%s: can't lookup new inode (%s) for mkdir: %d\n",
2081 obd->obd_name, idname, (int) PTR_ERR(new));
2082 fsfilt_commit(obd, mds->mds_sb, new->d_inode, handle, 0);
2083 up(&parent_inode->i_sem);
2084 RETURN(PTR_ERR(new));
2085 } else if (new->d_inode) {
2086 CERROR("%s: name exists. repeat\n", obd->obd_name);
2090 new->d_fsdata = (void *)&dp;
2094 if ((lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY) ||
2095 (body->oa.o_flags & OBD_FL_RECREATE_OBJS)) {
2096 LASSERT(body->oa.o_id != 0);
2097 dp.p_inum = body->oa.o_id;
2098 DEBUG_REQ(D_HA, req, "replay create obj %lu/%lu",
2099 (unsigned long)body->oa.o_id,
2100 (unsigned long)body->oa.o_generation);
2103 rc = vfs_mkdir(parent_inode, new, body->oa.o_mode);
2105 if ((body->oa.o_flags & OBD_FL_RECREATE_OBJS) ||
2106 lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY) {
2107 new->d_inode->i_generation = body->oa.o_generation;
2108 mark_inode_dirty(new->d_inode);
2111 * avoiding asserts in cache flush case, as
2112 * @body->oa.o_id should be zero.
2114 if (body->oa.o_id) {
2115 LASSERTF(body->oa.o_id == new->d_inode->i_ino,
2116 "BUG 3550: failed to recreate obj "
2117 LPU64" -> %lu\n", body->oa.o_id,
2118 new->d_inode->i_ino);
2120 LASSERTF(body->oa.o_generation ==
2121 new->d_inode->i_generation,
2122 "BUG 3550: failed to recreate obj/gen "
2123 LPU64"/%u -> %lu/%u\n", body->oa.o_id,
2124 body->oa.o_generation,
2125 new->d_inode->i_ino,
2126 new->d_inode->i_generation);
2130 obdo_from_inode(&repbody->oa, new->d_inode, FILTER_VALID_FLAGS);
2131 repbody->oa.o_id = new->d_inode->i_ino;
2132 repbody->oa.o_generation = new->d_inode->i_generation;
2133 repbody->oa.o_valid |= OBD_MD_FLID | OBD_MD_FLGENER | OBD_MD_FID;
2135 if ((body->oa.o_flags & OBD_FL_RECREATE_OBJS) ||
2136 lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY) {
2137 id_group(&id) = mds->mds_num;
2139 LASSERT(body->oa.o_fid != 0);
2140 id_fid(&id) = body->oa.o_fid;
2142 LASSERT(body->oa.o_id != 0);
2143 id_ino(&id) = repbody->oa.o_id;
2144 id_gen(&id) = repbody->oa.o_generation;
2146 down(&new->d_inode->i_sem);
2147 rc = mds_update_inode_sid(obd, new->d_inode, handle, &id);
2148 up(&new->d_inode->i_sem);
2151 * make sure, that fid is up-to-date.
2153 mds_set_last_fid(obd, id_fid(&id));
2156 * allocate new sid, as object is created from scratch
2157 * and this is not replay.
2159 down(&new->d_inode->i_sem);
2160 rc = mds_alloc_inode_sid(obd, new->d_inode, handle, &id);
2161 up(&new->d_inode->i_sem);
2164 CERROR("Can't update lustre ID for inode %lu, "
2165 "error = %d\n", new->d_inode->i_ino, rc);
2169 /* initializing o_fid after it is allocated. */
2170 repbody->oa.o_fid = id_fid(&id);
2171 repbody->oa.o_mds = id_group(&id);
2173 rc = fsfilt_del_dir_entry(obd, new);
2174 up(&parent_inode->i_sem);
2176 CERROR("can't remove name for object: %d\n", rc);
2180 cleanup_phase = 2; /* created directory object */
2182 CDEBUG(D_OTHER, "created dirobj: %lu/%lu mode %o\n",
2183 (unsigned long)new->d_inode->i_ino,
2184 (unsigned long)new->d_inode->i_generation,
2185 (unsigned)new->d_inode->i_mode);
2186 cr_inum = new->d_inode->i_ino;
2188 up(&parent_inode->i_sem);
2189 CERROR("%s: can't create dirobj: %d\n", obd->obd_name, rc);
2193 if (body->oa.o_valid & OBD_MD_FLID) {
2194 /* this is new object for splitted dir. We have to prevent
2195 * recursive splitting on it -bzzz */
2196 mealen = obd_size_diskmd(mds->mds_md_exp, NULL);
2198 OBD_ALLOC(mea, mealen);
2200 GOTO(cleanup, rc = -ENOMEM);
2202 mea->mea_magic = MEA_MAGIC_ALL_CHARS;
2203 mea->mea_master = 0;
2206 down(&new->d_inode->i_sem);
2207 rc = fsfilt_set_md(obd, new->d_inode, handle,
2208 mea, mealen, EA_MEA);
2209 up(&new->d_inode->i_sem);
2211 CERROR("fsfilt_set_md() failed, "
2214 OBD_FREE(mea, mealen);
2216 CDEBUG(D_OTHER, "%s: mark non-splittable %lu/%u - %d\n",
2217 obd->obd_name, new->d_inode->i_ino,
2218 new->d_inode->i_generation, flags);
2219 } else if (body->oa.o_easize) {
2220 /* we pass LCK_EX to split routine to signal that we have
2221 * exclusive access to the directory. simple because nobody
2222 * knows it already exists -bzzz */
2223 rc = mds_try_to_split_dir(obd, new, NULL,
2224 body->oa.o_easize, LCK_EX);
2226 CERROR("Can't split directory %lu, error = %d.\n",
2227 new->d_inode->i_ino, rc);
2235 switch (cleanup_phase) {
2236 case 2: /* object has been created, but we'll may want to replay it later */
2238 ptlrpc_require_repack(req);
2239 case 1: /* transaction */
2240 rc = mds_finish_transno(mds, parent_inode, handle,
2245 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, &uc);
2249 static int mdt_get_info(struct ptlrpc_request *req)
2251 struct obd_export *exp = req->rq_export;
2256 key = lustre_msg_buf(req->rq_reqmsg, 0, 1);
2258 DEBUG_REQ(D_HA, req, "no get_info key");
2261 keylen = req->rq_reqmsg->buflens[0];
2263 if ((keylen < strlen("mdsize") || strcmp(key, "mdsize") != 0) &&
2264 (keylen < strlen("mdsnum") || strcmp(key, "mdsnum") != 0) &&
2265 (keylen < strlen("rootid") || strcmp(key, "rootid") != 0))
2268 if (keylen >= strlen("rootid") && !strcmp(key, "rootid")) {
2269 struct lustre_id *reply;
2270 int size = sizeof(*reply);
2272 rc = lustre_pack_reply(req, 1, &size, NULL);
2276 reply = lustre_msg_buf(req->rq_repmsg, 0, size);
2277 rc = obd_get_info(exp, keylen, key, &size, reply);
2280 int size = sizeof(*reply);
2282 rc = lustre_pack_reply(req, 1, &size, NULL);
2286 reply = lustre_msg_buf(req->rq_repmsg, 0, size);
2287 rc = obd_get_info(exp, keylen, key, &size, reply);
2290 req->rq_repmsg->status = 0;
2294 static int mds_set_info(struct obd_export *exp, __u32 keylen,
2295 void *key, __u32 vallen, void *val)
2297 struct obd_device *obd;
2298 struct mds_obd *mds;
2302 obd = class_exp2obd(exp);
2304 CDEBUG(D_IOCTL, "invalid client cookie "LPX64"\n",
2305 exp->exp_handle.h_cookie);
2310 if (keylen >= strlen("mds_type") &&
2311 memcmp(key, "mds_type", keylen) == 0) {
2315 CDEBUG(D_IOCTL, "set mds type to %x\n", *(int*)val);
2317 mds->mds_obd_type = *(int*)val;
2318 group = FILTER_GROUP_FIRST_MDS + mds->mds_obd_type;
2319 valsize = sizeof(group);
2321 /* mds number has been changed, so the corresponding obdfilter
2322 * exp need to be changed too. */
2323 rc = obd_set_info(mds->mds_dt_exp, strlen("mds_conn"),
2324 "mds_conn", valsize, &group);
2327 CDEBUG(D_IOCTL, "invalid key\n");
2331 static int mdt_set_info(struct ptlrpc_request *req)
2334 struct obd_export *exp = req->rq_export;
2335 int keylen, rc = 0, vallen;
2338 key = lustre_msg_buf(req->rq_reqmsg, 0, 1);
2340 DEBUG_REQ(D_HA, req, "no set_info key");
2343 keylen = req->rq_reqmsg->buflens[0];
2345 if (keylen == strlen("mds_type") &&
2346 memcmp(key, "mds_type", keylen) == 0) {
2347 rc = lustre_pack_reply(req, 0, NULL, NULL);
2351 val = lustre_msg_buf(req->rq_reqmsg, 1, 0);
2352 vallen = req->rq_reqmsg->buflens[1];
2354 rc = obd_set_info(exp, keylen, key, vallen, val);
2355 req->rq_repmsg->status = 0;
2358 CDEBUG(D_IOCTL, "invalid key\n");
2362 static void mds_revoke_export_locks(struct obd_export *exp)
2364 struct ldlm_namespace *ns = exp->exp_obd->obd_namespace;
2365 struct list_head *locklist = &exp->exp_ldlm_data.led_held_locks;
2366 struct ldlm_lock *lock, *next;
2367 struct ldlm_lock_desc desc;
2369 if (!exp->u.eu_mds_data.med_remote)
2373 l_lock(&ns->ns_lock);
2374 list_for_each_entry_safe(lock, next, locklist, l_export_chain) {
2375 if (lock->l_req_mode != lock->l_granted_mode)
2378 LASSERT(lock->l_resource);
2379 if (lock->l_resource->lr_type != LDLM_IBITS &&
2380 lock->l_resource->lr_type != LDLM_PLAIN)
2383 if (lock->l_flags & LDLM_FL_AST_SENT)
2386 lock->l_flags |= LDLM_FL_AST_SENT;
2388 /* the desc just pretend to exclusive */
2389 ldlm_lock2desc(lock, &desc);
2390 desc.l_req_mode = LCK_EX;
2391 desc.l_granted_mode = 0;
2393 lock->l_blocking_ast(lock, &desc, NULL, LDLM_CB_BLOCKING);
2395 l_unlock(&ns->ns_lock);
2399 static int mds_msg_check_version(struct lustre_msg *msg)
2405 case MDS_DISCONNECT:
2407 rc = lustre_msg_check_version(msg, LUSTRE_OBD_VERSION);
2409 CERROR("bad opc %u version %08x, expecting %08x\n",
2410 msg->opc, msg->version, LUSTRE_OBD_VERSION);
2415 case MDS_GETATTR_LOCK:
2419 case MDS_DONE_WRITING:
2422 rc = lustre_msg_check_version(msg, LUSTRE_MDS_VERSION);
2424 CERROR("bad opc %u version %08x, expecting %08x\n",
2425 msg->opc, msg->version, LUSTRE_MDS_VERSION);
2429 case LDLM_BL_CALLBACK:
2430 case LDLM_CP_CALLBACK:
2431 rc = lustre_msg_check_version(msg, LUSTRE_DLM_VERSION);
2433 CERROR("bad opc %u version %08x, expecting %08x\n",
2434 msg->opc, msg->version, LUSTRE_DLM_VERSION);
2436 case OBD_LOG_CANCEL:
2437 case LLOG_ORIGIN_HANDLE_OPEN:
2438 case LLOG_ORIGIN_HANDLE_NEXT_BLOCK:
2439 case LLOG_ORIGIN_HANDLE_PREV_BLOCK:
2440 case LLOG_ORIGIN_HANDLE_READ_HEADER:
2441 case LLOG_ORIGIN_HANDLE_CLOSE:
2443 rc = lustre_msg_check_version(msg, LUSTRE_LOG_VERSION);
2445 CERROR("bad opc %u version %08x, expecting %08x\n",
2446 msg->opc, msg->version, LUSTRE_LOG_VERSION);
2452 rc = lustre_msg_check_version(msg, LUSTRE_OBD_VERSION);
2454 CERROR("bad opc %u version %08x, expecting %08x\n",
2455 msg->opc, msg->version, LUSTRE_OBD_VERSION);
2458 case SEC_INIT_CONTINUE:
2463 CERROR("MDS unknown opcode %d\n", msg->opc);
2471 int mds_handle(struct ptlrpc_request *req)
2473 int should_process, fail = OBD_FAIL_MDS_ALL_REPLY_NET;
2474 struct obd_device *obd = NULL;
2475 struct mds_obd *mds = NULL; /* quell gcc overwarning */
2479 OBD_FAIL_RETURN(OBD_FAIL_MDS_ALL_REQUEST_NET | OBD_FAIL_ONCE, 0);
2481 rc = mds_msg_check_version(req->rq_reqmsg);
2483 CERROR("MDS drop mal-formed request\n");
2487 /* Security opc should NOT trigger any recovery events */
2488 if (req->rq_reqmsg->opc == SEC_INIT ||
2489 req->rq_reqmsg->opc == SEC_INIT_CONTINUE) {
2490 if (!req->rq_export)
2493 mds_req_add_idmapping(req, &req->rq_export->exp_mds_data);
2494 mds_revoke_export_locks(req->rq_export);
2496 } else if (req->rq_reqmsg->opc == SEC_FINI) {
2497 if (!req->rq_export)
2500 mds_req_del_idmapping(req, &req->rq_export->exp_mds_data);
2501 mds_revoke_export_locks(req->rq_export);
2505 LASSERT(current->journal_info == NULL);
2506 /* XXX identical to OST */
2507 if (req->rq_reqmsg->opc != MDS_CONNECT) {
2508 struct mds_export_data *med;
2511 if (req->rq_export == NULL) {
2512 CERROR("operation %d on unconnected MDS from %s\n",
2513 req->rq_reqmsg->opc,
2515 req->rq_status = -ENOTCONN;
2516 GOTO(out, rc = -ENOTCONN);
2519 med = &req->rq_export->exp_mds_data;
2520 obd = req->rq_export->exp_obd;
2523 /* sanity check: if the xid matches, the request must
2524 * be marked as a resent or replayed */
2525 if (req->rq_xid == le64_to_cpu(med->med_mcd->mcd_last_xid) ||
2526 req->rq_xid == le64_to_cpu(med->med_mcd->mcd_last_close_xid)) {
2527 LASSERTF(lustre_msg_get_flags(req->rq_reqmsg) &
2528 (MSG_RESENT | MSG_REPLAY),
2529 "rq_xid "LPU64" matches last_xid, "
2530 "expected RESENT flag\n",
2533 /* else: note the opposite is not always true; a
2534 * RESENT req after a failover will usually not match
2535 * the last_xid, since it was likely never
2536 * committed. A REPLAYed request will almost never
2537 * match the last xid, however it could for a
2538 * committed, but still retained, open. */
2540 spin_lock_bh(&obd->obd_processing_task_lock);
2541 recovering = obd->obd_recovering;
2542 spin_unlock_bh(&obd->obd_processing_task_lock);
2544 rc = mds_filter_recovery_request(req, obd,
2546 if (rc || should_process == 0) {
2548 } else if (should_process < 0) {
2549 req->rq_status = should_process;
2550 rc = ptlrpc_error(req);
2556 switch (req->rq_reqmsg->opc) {
2558 DEBUG_REQ(D_INODE, req, "connect");
2559 OBD_FAIL_RETURN(OBD_FAIL_MDS_CONNECT_NET, 0);
2560 rc = target_handle_connect(req);
2562 struct mds_export_data *med;
2564 LASSERT(req->rq_export);
2565 med = &req->rq_export->u.eu_mds_data;
2566 mds_init_export_data(req, med);
2567 mds_req_add_idmapping(req, med);
2569 /* Now that we have an export, set mds. */
2570 obd = req->rq_export->exp_obd;
2571 mds = mds_req2mds(req);
2575 case MDS_DISCONNECT:
2576 DEBUG_REQ(D_INODE, req, "disconnect");
2577 OBD_FAIL_RETURN(OBD_FAIL_MDS_DISCONNECT_NET, 0);
2578 rc = target_handle_disconnect(req);
2579 req->rq_status = rc; /* superfluous? */
2583 DEBUG_REQ(D_INODE, req, "getstatus");
2584 OBD_FAIL_RETURN(OBD_FAIL_MDS_GETSTATUS_NET, 0);
2585 rc = mds_getstatus(req);
2589 DEBUG_REQ(D_INODE, req, "getattr");
2590 OBD_FAIL_RETURN(OBD_FAIL_MDS_GETATTR_NET, 0);
2591 rc = mds_getattr(req, MDS_REQ_REC_OFF);
2594 case MDS_GETATTR_LOCK: {
2595 struct lustre_handle lockh;
2596 DEBUG_REQ(D_INODE, req, "getattr_lock");
2597 OBD_FAIL_RETURN(OBD_FAIL_MDS_GETATTR_LOCK_NET, 0);
2599 /* If this request gets a reconstructed reply, we won't be
2600 * acquiring any new locks in mds_getattr_lock, so we don't
2604 rc = mds_getattr_lock(req, MDS_REQ_REC_OFF, &lockh,
2605 MDS_INODELOCK_UPDATE);
2606 /* this non-intent call (from an ioctl) is special */
2607 req->rq_status = rc;
2608 if (rc == 0 && lockh.cookie)
2609 ldlm_lock_decref(&lockh, LCK_PR);
2613 DEBUG_REQ(D_INODE, req, "statfs");
2614 OBD_FAIL_RETURN(OBD_FAIL_MDS_STATFS_NET, 0);
2615 rc = mds_statfs(req);
2619 DEBUG_REQ(D_INODE, req, "readpage");
2620 OBD_FAIL_RETURN(OBD_FAIL_MDS_READPAGE_NET, 0);
2621 rc = mds_readpage(req, MDS_REQ_REC_OFF);
2623 if (OBD_FAIL_CHECK_ONCE(OBD_FAIL_MDS_SENDPAGE)) {
2624 if (req->rq_reply_state) {
2625 lustre_free_reply_state (req->rq_reply_state);
2626 req->rq_reply_state = NULL;
2633 __u32 *opcp = lustre_msg_buf(req->rq_reqmsg, MDS_REQ_REC_OFF,
2636 int size[3] = {sizeof(struct mds_body), mds->mds_max_mdsize,
2637 mds->mds_max_cookiesize};
2640 /* NB only peek inside req now; mds_reint() will swab it */
2642 CERROR ("Can't inspect opcode\n");
2647 if (lustre_msg_swabbed (req->rq_reqmsg))
2650 DEBUG_REQ(D_INODE, req, "reint %d (%s)", opc,
2651 (opc < sizeof(reint_names) / sizeof(reint_names[0]) ||
2652 reint_names[opc] == NULL) ? reint_names[opc] :
2655 OBD_FAIL_RETURN(OBD_FAIL_MDS_REINT_NET, 0);
2657 if (opc == REINT_UNLINK || opc == REINT_RENAME)
2659 else if (opc == REINT_OPEN)
2664 rc = lustre_pack_reply(req, bufcount, size, NULL);
2668 rc = mds_reint(req, MDS_REQ_REC_OFF, NULL);
2669 fail = OBD_FAIL_MDS_REINT_NET_REP;
2674 DEBUG_REQ(D_INODE, req, "close");
2675 OBD_FAIL_RETURN(OBD_FAIL_MDS_CLOSE_NET, 0);
2676 rc = mds_close(req, MDS_REQ_REC_OFF);
2679 case MDS_DONE_WRITING:
2680 DEBUG_REQ(D_INODE, req, "done_writing");
2681 OBD_FAIL_RETURN(OBD_FAIL_MDS_DONE_WRITING_NET, 0);
2682 rc = mds_done_writing(req, MDS_REQ_REC_OFF);
2686 DEBUG_REQ(D_INODE, req, "pin");
2687 OBD_FAIL_RETURN(OBD_FAIL_MDS_PIN_NET, 0);
2688 rc = mds_pin(req, MDS_REQ_REC_OFF);
2692 DEBUG_REQ(D_INODE, req, "sync");
2693 OBD_FAIL_RETURN(OBD_FAIL_MDS_SYNC_NET, 0);
2694 rc = mds_sync(req, MDS_REQ_REC_OFF);
2698 DEBUG_REQ(D_INODE, req, "ping");
2699 rc = target_handle_ping(req);
2702 case OBD_LOG_CANCEL:
2703 CDEBUG(D_INODE, "log cancel\n");
2704 OBD_FAIL_RETURN(OBD_FAIL_OBD_LOG_CANCEL_NET, 0);
2705 rc = -ENOTSUPP; /* la la la */
2709 DEBUG_REQ(D_INODE, req, "enqueue");
2710 OBD_FAIL_RETURN(OBD_FAIL_LDLM_ENQUEUE, 0);
2711 rc = ldlm_handle_enqueue(req, ldlm_server_completion_ast,
2712 ldlm_server_blocking_ast, NULL);
2713 fail = OBD_FAIL_LDLM_REPLY;
2716 DEBUG_REQ(D_INODE, req, "convert");
2717 OBD_FAIL_RETURN(OBD_FAIL_LDLM_CONVERT, 0);
2718 rc = ldlm_handle_convert(req);
2720 case LDLM_BL_CALLBACK:
2721 case LDLM_CP_CALLBACK:
2722 DEBUG_REQ(D_INODE, req, "callback");
2723 CERROR("callbacks should not happen on MDS\n");
2725 OBD_FAIL_RETURN(OBD_FAIL_LDLM_BL_CALLBACK, 0);
2727 case LLOG_ORIGIN_HANDLE_OPEN:
2728 DEBUG_REQ(D_INODE, req, "llog_init");
2729 OBD_FAIL_RETURN(OBD_FAIL_OBD_LOGD_NET, 0);
2730 rc = llog_origin_handle_open(req);
2732 case LLOG_ORIGIN_HANDLE_NEXT_BLOCK:
2733 DEBUG_REQ(D_INODE, req, "llog next block");
2734 OBD_FAIL_RETURN(OBD_FAIL_OBD_LOGD_NET, 0);
2735 rc = llog_origin_handle_next_block(req);
2737 case LLOG_ORIGIN_HANDLE_PREV_BLOCK:
2738 DEBUG_REQ(D_INODE, req, "llog prev block");
2739 OBD_FAIL_RETURN(OBD_FAIL_OBD_LOGD_NET, 0);
2740 rc = llog_origin_handle_prev_block(req);
2742 case LLOG_ORIGIN_HANDLE_READ_HEADER:
2743 DEBUG_REQ(D_INODE, req, "llog read header");
2744 OBD_FAIL_RETURN(OBD_FAIL_OBD_LOGD_NET, 0);
2745 rc = llog_origin_handle_read_header(req);
2747 case LLOG_ORIGIN_HANDLE_CLOSE:
2748 DEBUG_REQ(D_INODE, req, "llog close");
2749 OBD_FAIL_RETURN(OBD_FAIL_OBD_LOGD_NET, 0);
2750 rc = llog_origin_handle_close(req);
2753 DEBUG_REQ(D_INODE, req, "ost_create");
2754 rc = mdt_obj_create(req);
2757 DEBUG_REQ(D_INODE, req, "get_info");
2758 rc = mdt_get_info(req);
2761 DEBUG_REQ(D_INODE, req, "set_info");
2762 rc = mdt_set_info(req);
2765 CDEBUG(D_INODE, "write\n");
2766 OBD_FAIL_RETURN(OBD_FAIL_OST_BRW_NET, 0);
2767 rc = ost_brw_write(req, NULL);
2768 LASSERT(current->journal_info == NULL);
2769 /* mdt_brw sends its own replies */
2773 DEBUG_REQ(D_INODE, req, "llog catinfo");
2774 OBD_FAIL_RETURN(OBD_FAIL_OBD_LOGD_NET, 0);
2775 rc = llog_catinfo(req);
2778 req->rq_status = -ENOTSUPP;
2779 rc = ptlrpc_error(req);
2783 LASSERT(current->journal_info == NULL);
2787 /* If we're DISCONNECTing, the mds_export_data is already freed */
2788 if (!rc && req->rq_reqmsg->opc != MDS_DISCONNECT) {
2789 struct mds_export_data *med = &req->rq_export->exp_mds_data;
2790 struct obd_device *obd = list_entry(mds, struct obd_device,
2792 req->rq_repmsg->last_xid =
2793 le64_to_cpu(med->med_mcd->mcd_last_xid);
2795 if (!obd->obd_no_transno) {
2796 req->rq_repmsg->last_committed =
2797 obd->obd_last_committed;
2799 DEBUG_REQ(D_IOCTL, req,
2800 "not sending last_committed update");
2802 CDEBUG(D_INFO, "last_transno "LPU64", last_committed "LPU64
2804 mds->mds_last_transno, obd->obd_last_committed,
2809 if (lustre_msg_get_flags(req->rq_reqmsg) & MSG_LAST_REPLAY) {
2810 if (obd && obd->obd_recovering) {
2811 DEBUG_REQ(D_HA, req, "LAST_REPLAY, queuing reply");
2812 return target_queue_final_reply(req, rc);
2814 /* Lost a race with recovery; let the error path DTRT. */
2815 rc = req->rq_status = -ENOTCONN;
2818 target_send_reply(req, rc, fail);
2822 /* Update the server data on disk. This stores the new mount_count and also the
2823 * last_rcvd value to disk. If we don't have a clean shutdown, then the server
2824 * last_rcvd value may be less than that of the clients. This will alert us
2825 * that we may need to do client recovery.
2827 * Also assumes for mds_last_transno that we are not modifying it (no locking).
2829 int mds_update_server_data(struct obd_device *obd, int force_sync)
2831 struct mds_obd *mds = &obd->u.mds;
2832 struct mds_server_data *msd = mds->mds_server_data;
2833 struct file *filp = mds->mds_rcvd_filp;
2834 struct lvfs_run_ctxt saved;
2839 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
2840 msd->msd_last_transno = cpu_to_le64(mds->mds_last_transno);
2842 CDEBUG(D_SUPER, "MDS mount_count is "LPU64", last_transno is "LPU64"\n",
2843 mds->mds_mount_count, mds->mds_last_transno);
2844 rc = fsfilt_write_record(obd, filp, msd, sizeof(*msd), &off, force_sync);
2846 CERROR("error writing MDS server data: rc = %d\n", rc);
2847 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
2852 /* saves last allocated fid counter to file. */
2853 int mds_update_last_fid(struct obd_device *obd, void *handle,
2856 struct mds_obd *mds = &obd->u.mds;
2857 struct file *filp = mds->mds_fid_filp;
2858 struct lvfs_run_ctxt saved;
2864 spin_lock(&mds->mds_last_fid_lock);
2865 last_fid = mds->mds_last_fid;
2866 spin_unlock(&mds->mds_last_fid_lock);
2868 CDEBUG(D_SUPER, "MDS last_fid is #"LPU64"\n",
2872 fsfilt_add_journal_cb(obd, mds->mds_sb, last_fid,
2873 handle, mds_commit_last_fid_cb,
2877 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
2878 rc = fsfilt_write_record(obd, filp, &last_fid, sizeof(last_fid),
2880 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
2883 CERROR("error writing MDS last_fid #"LPU64
2884 ", err = %d\n", last_fid, rc);
2888 CDEBUG(D_SUPER, "wrote fid #"LPU64" at idx "
2889 "%llu: err = %d\n", last_fid, off, rc);
2894 void mds_set_last_fid(struct obd_device *obd, __u64 fid)
2896 struct mds_obd *mds = &obd->u.mds;
2898 spin_lock(&mds->mds_last_fid_lock);
2899 if (fid > mds->mds_last_fid)
2900 mds->mds_last_fid = fid;
2901 spin_unlock(&mds->mds_last_fid_lock);
2904 void mds_commit_last_transno_cb(struct obd_device *obd,
2905 __u64 transno, void *data,
2908 obd_transno_commit_cb(obd, transno, error);
2911 void mds_commit_last_fid_cb(struct obd_device *obd,
2912 __u64 fid, void *data,
2916 CERROR("%s: fid "LPD64" commit error: %d\n",
2917 obd->obd_name, fid, error);
2921 CDEBUG(D_HA, "%s: fid "LPD64" committed\n",
2922 obd->obd_name, fid);
2925 __u64 mds_alloc_fid(struct obd_device *obd)
2927 struct mds_obd *mds = &obd->u.mds;
2930 spin_lock(&mds->mds_last_fid_lock);
2931 fid = ++mds->mds_last_fid;
2932 spin_unlock(&mds->mds_last_fid_lock);
2938 * allocates new lustre_id on passed @inode and saves it to inode EA.
2940 int mds_alloc_inode_sid(struct obd_device *obd, struct inode *inode,
2941 void *handle, struct lustre_id *id)
2943 struct mds_obd *mds = &obd->u.mds;
2944 int alloc = 0, rc = 0;
2947 LASSERT(obd != NULL);
2948 LASSERT(inode != NULL);
2951 OBD_ALLOC(id, sizeof(*id));
2957 id_group(id) = mds->mds_num;
2958 id_fid(id) = mds_alloc_fid(obd);
2959 id_ino(id) = inode->i_ino;
2960 id_gen(id) = inode->i_generation;
2961 id_type(id) = (S_IFMT & inode->i_mode);
2963 rc = mds_update_inode_sid(obd, inode, handle, id);
2965 CERROR("Can't update inode FID EA, "
2970 OBD_FREE(id, sizeof(*id));
2975 * reads inode self id from inode EA. Probably later this should be replaced by
2976 * caching inode self id to avoid raeding it every time it is needed.
2978 int mds_read_inode_sid(struct obd_device *obd, struct inode *inode,
2979 struct lustre_id *id)
2984 LASSERT(id != NULL);
2985 LASSERT(obd != NULL);
2986 LASSERT(inode != NULL);
2988 rc = fsfilt_get_md(obd, inode, &id->li_fid,
2989 sizeof(id->li_fid), EA_SID);
2991 CERROR("fsfilt_get_md() failed, "
3004 /* updates inode self id in EA. */
3005 int mds_update_inode_sid(struct obd_device *obd, struct inode *inode,
3006 void *handle, struct lustre_id *id)
3011 LASSERT(id != NULL);
3012 LASSERT(obd != NULL);
3013 LASSERT(inode != NULL);
3015 rc = fsfilt_set_md(obd, inode, handle, &id->li_fid,
3016 sizeof(id->li_fid), EA_SID);
3018 CERROR("fsfilt_set_md() failed, rc = %d\n", rc);
3026 * reads inode id on master MDS. This is usualy done by CMOBD to update requests
3027 * to master MDS by correct store cookie, needed to find inode on master MDS
3030 int mds_read_inode_mid(struct obd_device *obd, struct inode *inode,
3031 struct lustre_id *id)
3036 LASSERT(id != NULL);
3037 LASSERT(obd != NULL);
3038 LASSERT(inode != NULL);
3040 rc = fsfilt_get_md(obd, inode, id, sizeof(*id), EA_MID);
3042 CERROR("fsfilt_get_md() failed, rc = %d\n", rc);
3055 * updates master inode id. Usualy this is done by CMOBD after an inode is
3056 * created and relationship between cache MDS and master one should be
3059 int mds_update_inode_mid(struct obd_device *obd, struct inode *inode,
3060 void *handle, struct lustre_id *id)
3065 LASSERT(id != NULL);
3066 LASSERT(obd != NULL);
3067 LASSERT(inode != NULL);
3069 rc = fsfilt_set_md(obd, inode, handle, id,
3070 sizeof(*id), EA_MID);
3072 CERROR("fsfilt_set_md() failed, "
3080 /* mount the file system (secretly) */
3081 static int mds_setup(struct obd_device *obd, obd_count len, void *buf)
3083 struct lustre_cfg* lcfg = buf;
3084 struct mds_obd *mds = &obd->u.mds;
3085 struct lvfs_obd_ctxt *lvfs_ctxt = NULL;
3086 char *options = NULL;
3087 struct vfsmount *mnt;
3094 if (!lcfg->lcfg_inlbuf1 || !lcfg->lcfg_inlbuf2)
3095 RETURN(rc = -EINVAL);
3097 obd->obd_fsops = fsfilt_get_ops(lcfg->lcfg_inlbuf2);
3098 if (IS_ERR(obd->obd_fsops))
3099 RETURN(rc = PTR_ERR(obd->obd_fsops));
3101 mds->mds_max_mdsize = sizeof(struct lov_mds_md);
3103 page = __get_free_page(GFP_KERNEL);
3107 options = (char *)page;
3108 memset(options, 0, PAGE_SIZE);
3111 * here we use "iopen_nopriv" hardcoded, because it affects MDS utility
3112 * and the rest of options are passed by mount options. Probably this
3113 * should be moved to somewhere else like startup scripts or lconf. */
3114 sprintf(options, "iopen_nopriv");
3115 if (lcfg->lcfg_inllen4 > 0 && lcfg->lcfg_inlbuf4)
3116 sprintf(options + strlen(options), ",%s",
3117 lcfg->lcfg_inlbuf4);
3119 /* we have to know mdsnum before touching underlying fs -bzzz */
3120 atomic_set(&mds->mds_open_count, 0);
3121 sema_init(&mds->mds_md_sem, 1);
3122 mds->mds_md_connected = 0;
3123 mds->mds_md_name = NULL;
3125 if (lcfg->lcfg_inllen5 > 0 && lcfg->lcfg_inlbuf5 &&
3126 strncmp(lcfg->lcfg_inlbuf5, "dumb", lcfg->lcfg_inllen5)) {
3129 CDEBUG(D_OTHER, "MDS: %s is master for %s\n",
3130 obd->obd_name, lcfg->lcfg_inlbuf5);
3132 generate_random_uuid(uuid);
3133 class_uuid_unparse(uuid, &mds->mds_md_uuid);
3135 OBD_ALLOC(mds->mds_md_name, lcfg->lcfg_inllen5);
3136 if (mds->mds_md_name == NULL)
3137 RETURN(rc = -ENOMEM);
3139 memcpy(mds->mds_md_name, lcfg->lcfg_inlbuf5,
3140 lcfg->lcfg_inllen5);
3142 rc = mds_md_connect(obd, mds->mds_md_name);
3144 OBD_FREE(mds->mds_md_name, lcfg->lcfg_inllen5);
3149 mds->mds_obd_type = MDS_MASTER_OBD;
3151 if (lcfg->lcfg_inllen6 > 0 && lcfg->lcfg_inlbuf6 &&
3152 strncmp(lcfg->lcfg_inlbuf6, "dumb", lcfg->lcfg_inllen6)) {
3153 if (!memcmp(lcfg->lcfg_inlbuf6, "master", strlen("master"))) {
3154 mds->mds_obd_type = MDS_MASTER_OBD;
3155 } else if (!memcmp(lcfg->lcfg_inlbuf6, "cache", strlen("cache"))) {
3156 mds->mds_obd_type = MDS_CACHE_OBD;
3160 rc = lvfs_mount_fs(lcfg->lcfg_inlbuf1, lcfg->lcfg_inlbuf2,
3161 options, 0, &lvfs_ctxt);
3165 if (rc || !lvfs_ctxt) {
3166 CERROR("lvfs_mount_fs failed: rc = %d\n", rc);
3170 mnt = lvfs_ctxt->loc_mnt;
3171 mds->mds_lvfs_ctxt = lvfs_ctxt;
3172 ll_clear_rdonly(ll_sbdev(mnt->mnt_sb));
3174 CDEBUG(D_SUPER, "%s: mnt = %p\n", lcfg->lcfg_inlbuf1, mnt);
3176 sema_init(&mds->mds_epoch_sem, 1);
3177 atomic_set(&mds->mds_real_clients, 0);
3178 spin_lock_init(&mds->mds_transno_lock);
3179 spin_lock_init(&mds->mds_last_fid_lock);
3180 sema_init(&mds->mds_orphan_recovery_sem, 1);
3181 mds->mds_max_cookiesize = sizeof(struct llog_cookie);
3183 sprintf(ns_name, "mds-%s", obd->obd_uuid.uuid);
3184 obd->obd_namespace = ldlm_namespace_new(ns_name, LDLM_NAMESPACE_SERVER);
3186 if (obd->obd_namespace == NULL) {
3187 mds_cleanup(obd, 0);
3188 GOTO(err_put, rc = -ENOMEM);
3190 ldlm_register_intent(obd->obd_namespace, mds_intent_policy);
3192 rc = mds_fs_setup(obd, mnt);
3194 CERROR("%s: MDS filesystem method init failed: rc = %d\n",
3199 rc = llog_start_commit_thread();
3203 if (lcfg->lcfg_inllen3 > 0 && lcfg->lcfg_inlbuf3 &&
3204 strncmp(lcfg->lcfg_inlbuf3, "dumb", lcfg->lcfg_inllen3)) {
3207 generate_random_uuid(uuid);
3208 class_uuid_unparse(uuid, &mds->mds_dt_uuid);
3210 OBD_ALLOC(mds->mds_profile, lcfg->lcfg_inllen3);
3211 if (mds->mds_profile == NULL)
3212 GOTO(err_fs, rc = -ENOMEM);
3214 memcpy(mds->mds_profile, lcfg->lcfg_inlbuf3,
3215 lcfg->lcfg_inllen3);
3219 * setup root dir and files ID dir if lmv already connected, or there is
3222 if (mds->mds_md_exp || (lcfg->lcfg_inllen3 > 0 && lcfg->lcfg_inlbuf3 &&
3223 strncmp(lcfg->lcfg_inlbuf3, "dumb", lcfg->lcfg_inllen3)))
3225 rc = mds_fs_setup_rootid(obd);
3229 rc = mds_fs_setup_virtid(obd);
3234 ptlrpc_init_client(LDLM_CB_REQUEST_PORTAL, LDLM_CB_REPLY_PORTAL,
3235 "mds_ldlm_client", &obd->obd_ldlm_client);
3236 obd->obd_replayable = 1;
3238 rc = mds_postsetup(obd);
3245 /* No extra cleanup needed for llog_init_commit_thread() */
3246 mds_fs_cleanup(obd, 0);
3248 ldlm_namespace_free(obd->obd_namespace, 0);
3249 obd->obd_namespace = NULL;
3252 lvfs_umount_fs(mds->mds_lvfs_ctxt);
3256 fsfilt_put_ops(obd->obd_fsops);
3260 static int mds_postsetup(struct obd_device *obd)
3262 struct mds_obd *mds = &obd->u.mds;
3266 rc = obd_llog_setup(obd, &obd->obd_llogs, LLOG_CONFIG_ORIG_CTXT,
3267 obd, 0, NULL, &llog_lvfs_ops);
3271 if (mds->mds_profile) {
3272 struct llog_ctxt *lgctxt;
3273 struct lvfs_run_ctxt saved;
3274 struct lustre_profile *lprof;
3275 struct config_llog_instance cfg;
3277 cfg.cfg_instance = NULL;
3278 cfg.cfg_uuid = mds->mds_dt_uuid;
3279 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
3281 lgctxt = llog_get_context(&obd->obd_llogs, LLOG_CONFIG_ORIG_CTXT);
3283 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
3284 GOTO(err_llog, rc = -EINVAL);
3287 rc = class_config_process_llog(lgctxt, mds->mds_profile, &cfg);
3288 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
3293 lprof = class_get_profile(mds->mds_profile);
3294 if (lprof == NULL) {
3295 CERROR("No profile found: %s\n", mds->mds_profile);
3296 GOTO(err_cleanup, rc = -ENOENT);
3298 rc = mds_dt_connect(obd, lprof->lp_lov);
3300 GOTO(err_cleanup, rc);
3302 rc = mds_md_postsetup(obd);
3304 GOTO(err_cleanup, rc);
3311 obd_llog_cleanup(llog_get_context(&obd->obd_llogs,
3312 LLOG_CONFIG_ORIG_CTXT));
3316 int mds_postrecov(struct obd_device *obd)
3318 struct mds_obd *mds = &obd->u.mds;
3319 struct llog_ctxt *ctxt;
3320 int rc, item = 0, valsize;
3324 LASSERT(!obd->obd_recovering);
3325 ctxt = llog_get_context(&obd->obd_llogs, LLOG_UNLINK_ORIG_CTXT);
3326 LASSERT(ctxt != NULL);
3328 /* set nextid first, so we are sure it happens */
3329 rc = mds_dt_set_nextid(obd);
3331 CERROR("%s: mds_dt_set_nextid() failed\n", obd->obd_name);
3335 /* clean PENDING dir */
3336 rc = mds_cleanup_orphans(obd);
3341 group = FILTER_GROUP_FIRST_MDS + mds->mds_num;
3342 valsize = sizeof(group);
3343 rc = obd_set_info(mds->mds_dt_exp, strlen("mds_conn"), "mds_conn",
3348 rc = llog_connect(ctxt, obd->u.mds.mds_dt_desc.ld_tgt_count,
3351 CERROR("%s: failed at llog_origin_connect: %d\n",
3356 /* remove the orphaned precreated objects */
3357 rc = mds_dt_clearorphans(mds, NULL /* all OSTs */);
3362 RETURN(rc < 0 ? rc : item);
3365 /* cleanup all llogging subsystems */
3366 rc = obd_llog_finish(obd, &obd->obd_llogs,
3367 mds->mds_dt_desc.ld_tgt_count);
3369 CERROR("%s: failed to cleanup llogging subsystems\n",
3374 int mds_dt_clean(struct obd_device *obd)
3376 struct mds_obd *mds = &obd->u.mds;
3379 if (mds->mds_profile) {
3381 struct llog_ctxt *llctx;
3382 struct lvfs_run_ctxt saved;
3383 struct config_llog_instance cfg;
3384 int len = strlen(mds->mds_profile) + sizeof("-clean") + 1;
3386 OBD_ALLOC(cln_prof, len);
3387 sprintf(cln_prof, "%s-clean", mds->mds_profile);
3389 cfg.cfg_instance = NULL;
3390 cfg.cfg_uuid = mds->mds_dt_uuid;
3392 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
3393 llctx = llog_get_context(&obd->obd_llogs,
3394 LLOG_CONFIG_ORIG_CTXT);
3395 class_config_process_llog(llctx, cln_prof, &cfg);
3396 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
3398 OBD_FREE(cln_prof, len);
3399 OBD_FREE(mds->mds_profile, strlen(mds->mds_profile) + 1);
3400 mds->mds_profile = NULL;
3405 int mds_md_clean(struct obd_device *obd)
3407 struct mds_obd *mds = &obd->u.mds;
3410 if (mds->mds_md_name) {
3411 OBD_FREE(mds->mds_md_name, strlen(mds->mds_md_name) + 1);
3412 mds->mds_md_name = NULL;
3417 static int mds_precleanup(struct obd_device *obd, int flags)
3423 mds_dt_disconnect(obd, flags);
3425 obd_llog_cleanup(llog_get_context(&obd->obd_llogs, LLOG_CONFIG_ORIG_CTXT));
3429 extern void lgss_svc_cache_purge_all(void);
3430 static int mds_cleanup(struct obd_device *obd, int flags)
3432 struct mds_obd *mds = &obd->u.mds;
3435 if (mds->mds_sb == NULL)
3438 mds_update_server_data(obd, 1);
3439 mds_update_last_fid(obd, NULL, 1);
3441 if (mds->mds_dt_objids != NULL) {
3442 int size = mds->mds_dt_desc.ld_tgt_count *
3444 OBD_FREE(mds->mds_dt_objids, size);
3446 mds_fs_cleanup(obd, flags);
3450 /* 2 seems normal on mds, (may_umount() also expects 2
3451 fwiw), but we only see 1 at this point in obdfilter. */
3452 lvfs_umount_fs(mds->mds_lvfs_ctxt);
3456 ldlm_namespace_free(obd->obd_namespace, flags & OBD_OPT_FORCE);
3458 spin_lock_bh(&obd->obd_processing_task_lock);
3459 if (obd->obd_recovering) {
3460 target_cancel_recovery_timer(obd);
3461 obd->obd_recovering = 0;
3463 spin_unlock_bh(&obd->obd_processing_task_lock);
3466 fsfilt_put_ops(obd->obd_fsops);
3470 lgss_svc_cache_purge_all();
3475 static int set_security(const char *value, char **sec)
3479 if (!strcmp(value, "null"))
3481 else if (!strcmp(value, "krb5i"))
3483 else if (!strcmp(value, "krb5p"))
3486 CERROR("Unrecognized value, force use NULL\n");
3493 static int mds_process_config(struct obd_device *obd, obd_count len, void *buf)
3495 struct lustre_cfg *lcfg = buf;
3496 struct mds_obd *mds = &obd->u.mds;
3500 switch(lcfg->lcfg_command) {
3501 case LCFG_SET_SECURITY: {
3502 if (!lcfg->lcfg_inllen1 || !lcfg->lcfg_inllen2)
3503 GOTO(out, rc = -EINVAL);
3505 if (!strcmp(lcfg->lcfg_inlbuf1, "mds_mds_sec"))
3506 rc = set_security(lcfg->lcfg_inlbuf2,
3508 else if (!strcmp(lcfg->lcfg_inlbuf1, "mds_ost_sec"))
3509 rc = set_security(lcfg->lcfg_inlbuf2,
3512 CERROR("Unrecognized key\n");
3518 CERROR("Unknown command: %d\n", lcfg->lcfg_command);
3519 GOTO(out, rc = -EINVAL);
3527 static void fixup_handle_for_resent_req(struct ptlrpc_request *req,
3529 struct ldlm_lock *new_lock,
3530 struct ldlm_lock **old_lock,
3531 struct lustre_handle *lockh)
3533 struct obd_export *exp = req->rq_export;
3534 struct obd_device *obd = exp->exp_obd;
3535 struct ldlm_request *dlmreq =
3536 lustre_msg_buf(req->rq_reqmsg, offset, sizeof (*dlmreq));
3537 struct lustre_handle remote_hdl = dlmreq->lock_handle1;
3538 struct list_head *iter;
3540 if (!(lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT))
3543 l_lock(&obd->obd_namespace->ns_lock);
3544 list_for_each(iter, &exp->exp_ldlm_data.led_held_locks) {
3545 struct ldlm_lock *lock;
3546 lock = list_entry(iter, struct ldlm_lock, l_export_chain);
3547 if (lock == new_lock)
3549 if (lock->l_remote_handle.cookie == remote_hdl.cookie) {
3550 lockh->cookie = lock->l_handle.h_cookie;
3551 LDLM_DEBUG(lock, "restoring lock cookie");
3552 DEBUG_REQ(D_HA, req, "restoring lock cookie "LPX64,
3555 *old_lock = LDLM_LOCK_GET(lock);
3556 l_unlock(&obd->obd_namespace->ns_lock);
3560 l_unlock(&obd->obd_namespace->ns_lock);
3562 /* If the xid matches, then we know this is a resent request,
3563 * and allow it. (It's probably an OPEN, for which we don't
3566 le64_to_cpu(exp->exp_mds_data.med_mcd->mcd_last_xid))
3570 le64_to_cpu(exp->exp_mds_data.med_mcd->mcd_last_close_xid))
3573 /* This remote handle isn't enqueued, so we never received or
3574 * processed this request. Clear MSG_RESENT, because it can
3575 * be handled like any normal request now. */
3577 lustre_msg_clear_flags(req->rq_reqmsg, MSG_RESENT);
3579 DEBUG_REQ(D_HA, req, "no existing lock with rhandle "LPX64,
3583 int intent_disposition(struct ldlm_reply *rep, int flag)
3587 return (rep->lock_policy_res1 & flag);
3590 void intent_set_disposition(struct ldlm_reply *rep, int flag)
3594 rep->lock_policy_res1 |= flag;
3597 static int mds_intent_policy(struct ldlm_namespace *ns,
3598 struct ldlm_lock **lockp, void *req_cookie,
3599 ldlm_mode_t mode, int flags, void *data)
3601 struct ptlrpc_request *req = req_cookie;
3602 struct ldlm_lock *lock = *lockp;
3603 struct ldlm_intent *it;
3604 struct mds_obd *mds = &req->rq_export->exp_obd->u.mds;
3605 struct ldlm_reply *rep;
3606 struct lustre_handle lockh[2] = {{0}, {0}};
3607 struct ldlm_lock *new_lock = NULL;
3608 int getattr_part = MDS_INODELOCK_UPDATE;
3609 int rc, reply_buffers;
3610 int repsize[5] = {sizeof(struct ldlm_reply),
3611 sizeof(struct mds_body),
3612 mds->mds_max_mdsize};
3614 int offset = MDS_REQ_INTENT_REC_OFF;
3617 LASSERT(req != NULL);
3618 MD_COUNTER_INCREMENT(req->rq_export->exp_obd, intent_lock);
3620 if (req->rq_reqmsg->bufcount <= MDS_REQ_INTENT_IT_OFF) {
3621 /* No intent was provided */
3622 int size = sizeof(struct ldlm_reply);
3623 rc = lustre_pack_reply(req, 1, &size, NULL);
3628 it = lustre_swab_reqbuf(req, MDS_REQ_INTENT_IT_OFF, sizeof(*it),
3629 lustre_swab_ldlm_intent);
3631 CERROR("Intent missing\n");
3632 RETURN(req->rq_status = -EFAULT);
3635 LDLM_DEBUG(lock, "intent policy, opc: %s", ldlm_it2str(it->opc));
3638 if (it->opc & ( IT_OPEN | IT_GETATTR | IT_LOOKUP | IT_CHDIR )) {
3641 repsize[4] = xattr_acl_size(LL_ACL_MAX_ENTRIES);
3644 rc = lustre_pack_reply(req, reply_buffers, repsize, NULL);
3646 RETURN(req->rq_status = rc);
3648 rep = lustre_msg_buf(req->rq_repmsg, 0, sizeof(*rep));
3649 LASSERT(rep != NULL);
3651 intent_set_disposition(rep, DISP_IT_EXECD);
3653 /* execute policy */
3654 switch ((long)it->opc) {
3656 case IT_CREAT|IT_OPEN:
3657 fixup_handle_for_resent_req(req, MDS_REQ_INTENT_LOCKREQ_OFF,
3659 /* XXX swab here to assert that an mds_open reint
3660 * packet is following */
3661 fixup_handle_for_resent_req(req, MDS_REQ_INTENT_LOCKREQ_OFF,
3663 rep->lock_policy_res2 = mds_reint(req, offset, lockh);
3665 if (rep->lock_policy_res2) {
3667 * mds_open() returns ENOLCK where it should return
3668 * zero, but it has no lock to return.
3670 if (rep->lock_policy_res2 == ENOLCK)
3671 rep->lock_policy_res2 = 0;
3673 RETURN(ELDLM_LOCK_ABORTED);
3677 * IT_OPEN may return lock on cross-node dentry that we want to
3678 * hold during attr retrival -bzzz
3680 if (lockh[0].cookie == 0)
3681 RETURN(ELDLM_LOCK_ABORTED);
3685 getattr_part = MDS_INODELOCK_LOOKUP;
3688 getattr_part |= MDS_INODELOCK_LOOKUP;
3690 fixup_handle_for_resent_req(req, MDS_REQ_INTENT_LOCKREQ_OFF,
3691 lock, &new_lock, lockh);
3692 rep->lock_policy_res2 = mds_getattr_lock(req, offset, lockh,
3694 /* FIXME: LDLM can set req->rq_status. MDS sets
3695 policy_res{1,2} with disposition and status.
3696 - replay: returns 0 & req->status is old status
3697 - otherwise: returns req->status */
3698 if (intent_disposition(rep, DISP_LOOKUP_NEG))
3699 rep->lock_policy_res2 = 0;
3700 if (!intent_disposition(rep, DISP_LOOKUP_POS) ||
3701 rep->lock_policy_res2)
3702 RETURN(ELDLM_LOCK_ABORTED);
3703 if (req->rq_status != 0) {
3705 rep->lock_policy_res2 = req->rq_status;
3706 RETURN(ELDLM_LOCK_ABORTED);
3710 rc = mds_lock_and_check_slave(offset, req, lockh);
3711 if ((rep->lock_policy_res2 = rc)) {
3713 rep->lock_policy_res2 = 0;
3714 RETURN(ELDLM_LOCK_ABORTED);
3718 CERROR("Unhandled intent "LPD64"\n", it->opc);
3722 /* By this point, whatever function we called above must have either
3723 * filled in 'lockh', been an intent replay, or returned an error. We
3724 * want to allow replayed RPCs to not get a lock, since we would just
3725 * drop it below anyways because lock replay is done separately by the
3726 * client afterwards. For regular RPCs we want to give the new lock to
3727 * the client instead of whatever lock it was about to get. */
3728 if (new_lock == NULL)
3729 new_lock = ldlm_handle2lock(&lockh[0]);
3730 if (new_lock == NULL && (flags & LDLM_FL_INTENT_ONLY))
3733 LASSERTF(new_lock != NULL, "op "LPX64" lockh "LPX64"\n",
3734 it->opc, lockh[0].cookie);
3736 /* If we've already given this lock to a client once, then we should
3737 * have no readers or writers. Otherwise, we should have one reader
3738 * _or_ writer ref (which will be zeroed below) before returning the
3739 * lock to a client. */
3740 if (new_lock->l_export == req->rq_export) {
3741 LASSERT(new_lock->l_readers + new_lock->l_writers == 0);
3743 LASSERT(new_lock->l_export == NULL);
3744 LASSERT(new_lock->l_readers + new_lock->l_writers == 1);
3749 if (new_lock->l_export == req->rq_export) {
3750 /* Already gave this to the client, which means that we
3751 * reconstructed a reply. */
3752 LASSERT(lustre_msg_get_flags(req->rq_reqmsg) &
3754 RETURN(ELDLM_LOCK_REPLACED);
3757 /* Fixup the lock to be given to the client */
3758 l_lock(&new_lock->l_resource->lr_namespace->ns_lock);
3759 new_lock->l_readers = 0;
3760 new_lock->l_writers = 0;
3762 new_lock->l_export = class_export_get(req->rq_export);
3763 list_add(&new_lock->l_export_chain,
3764 &new_lock->l_export->exp_ldlm_data.led_held_locks);
3766 new_lock->l_blocking_ast = lock->l_blocking_ast;
3767 new_lock->l_completion_ast = lock->l_completion_ast;
3769 memcpy(&new_lock->l_remote_handle, &lock->l_remote_handle,
3770 sizeof(lock->l_remote_handle));
3772 new_lock->l_flags &= ~LDLM_FL_LOCAL;
3774 LDLM_LOCK_PUT(new_lock);
3775 l_unlock(&new_lock->l_resource->lr_namespace->ns_lock);
3777 RETURN(ELDLM_LOCK_REPLACED);
3780 int mds_attach(struct obd_device *dev, obd_count len, void *data)
3782 struct lprocfs_static_vars lvars;
3785 lprocfs_init_multi_vars(0, &lvars);
3787 rc = lprocfs_obd_attach(dev, lvars.obd_vars);
3791 return lprocfs_alloc_md_stats(dev, 0);
3794 int mds_detach(struct obd_device *dev)
3796 lprocfs_free_md_stats(dev);
3797 return lprocfs_obd_detach(dev);
3800 int mdt_attach(struct obd_device *dev, obd_count len, void *data)
3802 struct lprocfs_static_vars lvars;
3804 lprocfs_init_multi_vars(1, &lvars);
3805 return lprocfs_obd_attach(dev, lvars.obd_vars);
3808 int mdt_detach(struct obd_device *dev)
3810 return lprocfs_obd_detach(dev);
3813 static int mdt_setup(struct obd_device *obd, obd_count len, void *buf)
3815 struct mds_obd *mds = &obd->u.mds;
3820 ptlrpc_init_svc(MDS_NBUFS, MDS_BUFSIZE, MDS_MAXREQSIZE,
3821 MDS_REQUEST_PORTAL, MDC_REPLY_PORTAL,
3822 MDS_SERVICE_WATCHDOG_TIMEOUT,
3823 mds_handle, "mds", obd->obd_proc_entry);
3825 if (!mds->mds_service) {
3826 CERROR("failed to start service\n");
3830 rc = ptlrpc_start_n_threads(obd, mds->mds_service, MDT_NUM_THREADS,
3833 GOTO(err_thread, rc);
3835 mds->mds_setattr_service =
3836 ptlrpc_init_svc(MDS_NBUFS, MDS_BUFSIZE, MDS_MAXREQSIZE,
3837 MDS_SETATTR_PORTAL, MDC_REPLY_PORTAL,
3838 MDS_SERVICE_WATCHDOG_TIMEOUT,
3839 mds_handle, "mds_setattr",
3840 obd->obd_proc_entry);
3841 if (!mds->mds_setattr_service) {
3842 CERROR("failed to start getattr service\n");
3843 GOTO(err_thread, rc = -ENOMEM);
3846 rc = ptlrpc_start_n_threads(obd, mds->mds_setattr_service,
3847 MDT_NUM_THREADS, "ll_mdt_attr");
3849 GOTO(err_thread2, rc);
3851 mds->mds_readpage_service =
3852 ptlrpc_init_svc(MDS_NBUFS, MDS_BUFSIZE, MDS_MAXREQSIZE,
3853 MDS_READPAGE_PORTAL, MDC_REPLY_PORTAL,
3854 MDS_SERVICE_WATCHDOG_TIMEOUT,
3855 mds_handle, "mds_readpage",
3856 obd->obd_proc_entry);
3857 if (!mds->mds_readpage_service) {
3858 CERROR("failed to start readpage service\n");
3859 GOTO(err_thread2, rc = -ENOMEM);
3862 rc = ptlrpc_start_n_threads(obd, mds->mds_readpage_service,
3863 MDT_NUM_THREADS, "ll_mdt_rdpg");
3866 GOTO(err_thread3, rc);
3871 ptlrpc_unregister_service(mds->mds_readpage_service);
3873 ptlrpc_unregister_service(mds->mds_setattr_service);
3875 ptlrpc_unregister_service(mds->mds_service);
3879 static int mdt_cleanup(struct obd_device *obd, int flags)
3881 struct mds_obd *mds = &obd->u.mds;
3884 ptlrpc_stop_all_threads(mds->mds_readpage_service);
3885 ptlrpc_unregister_service(mds->mds_readpage_service);
3887 ptlrpc_stop_all_threads(mds->mds_setattr_service);
3888 ptlrpc_unregister_service(mds->mds_setattr_service);
3890 ptlrpc_stop_all_threads(mds->mds_service);
3891 ptlrpc_unregister_service(mds->mds_service);
3896 static struct dentry *mds_lvfs_id2dentry(__u64 ino, __u32 gen,
3897 __u64 gr, void *data)
3899 struct lustre_id id;
3900 struct obd_device *obd = data;
3904 return mds_id2dentry(obd, &id, NULL);
3907 static int mds_get_info(struct obd_export *exp, __u32 keylen,
3908 void *key, __u32 *valsize, void *val)
3910 struct obd_device *obd;
3911 struct mds_obd *mds;
3914 obd = class_exp2obd(exp);
3918 CDEBUG(D_IOCTL, "invalid client cookie "LPX64"\n",
3919 exp->exp_handle.h_cookie);
3923 if (keylen >= strlen("reint_log") && memcmp(key, "reint_log", 9) == 0) {
3924 /* get log_context handle. */
3925 unsigned long *llh_handle = val;
3926 *valsize = sizeof(unsigned long);
3927 *llh_handle = (unsigned long)obd->obd_llog_ctxt[LLOG_REINT_ORIG_CTXT];
3930 if (keylen >= strlen("cache_sb") && memcmp(key, "cache_sb", 8) == 0) {
3931 /* get log_context handle. */
3932 unsigned long *sb = val;
3933 *valsize = sizeof(unsigned long);
3934 *sb = (unsigned long)obd->u.mds.mds_sb;
3938 if (keylen >= strlen("mdsize") && memcmp(key, "mdsize", keylen) == 0) {
3939 __u32 *mdsize = val;
3940 *valsize = sizeof(*mdsize);
3941 *mdsize = mds->mds_max_mdsize;
3945 if (keylen >= strlen("mdsnum") && strcmp(key, "mdsnum") == 0) {
3946 __u32 *mdsnum = val;
3947 *valsize = sizeof(*mdsnum);
3948 *mdsnum = mds->mds_num;
3952 if (keylen >= strlen("rootid") && strcmp(key, "rootid") == 0) {
3953 struct lustre_id *rootid = val;
3954 *valsize = sizeof(struct lustre_id);
3955 *rootid = mds->mds_rootid;
3959 CDEBUG(D_IOCTL, "invalid key\n");
3963 struct lvfs_callback_ops mds_lvfs_ops = {
3964 l_id2dentry: mds_lvfs_id2dentry,
3967 int mds_preprw(int cmd, struct obd_export *exp, struct obdo *oa,
3968 int objcount, struct obd_ioobj *obj,
3969 int niocount, struct niobuf_remote *nb,
3970 struct niobuf_local *res,
3971 struct obd_trans_info *oti);
3973 int mds_commitrw(int cmd, struct obd_export *exp, struct obdo *oa,
3974 int objcount, struct obd_ioobj *obj, int niocount,
3975 struct niobuf_local *res, struct obd_trans_info *oti,
3978 /* use obd ops to offer management infrastructure */
3979 static struct obd_ops mds_obd_ops = {
3980 .o_owner = THIS_MODULE,
3981 .o_attach = mds_attach,
3982 .o_detach = mds_detach,
3983 .o_connect = mds_connect,
3984 .o_connect_post = mds_connect_post,
3985 .o_init_export = mds_init_export,
3986 .o_destroy_export = mds_destroy_export,
3987 .o_disconnect = mds_disconnect,
3988 .o_setup = mds_setup,
3989 .o_precleanup = mds_precleanup,
3990 .o_cleanup = mds_cleanup,
3991 .o_process_config = mds_process_config,
3992 .o_postrecov = mds_postrecov,
3993 .o_statfs = mds_obd_statfs,
3994 .o_iocontrol = mds_iocontrol,
3995 .o_create = mds_obd_create,
3996 .o_destroy = mds_obd_destroy,
3997 .o_llog_init = mds_llog_init,
3998 .o_llog_finish = mds_llog_finish,
3999 .o_notify = mds_notify,
4000 .o_get_info = mds_get_info,
4001 .o_set_info = mds_set_info,
4002 .o_preprw = mds_preprw,
4003 .o_commitrw = mds_commitrw,
4006 static struct obd_ops mdt_obd_ops = {
4007 .o_owner = THIS_MODULE,
4008 .o_attach = mdt_attach,
4009 .o_detach = mdt_detach,
4010 .o_setup = mdt_setup,
4011 .o_cleanup = mdt_cleanup,
4014 static int __init mds_init(void)
4016 struct lprocfs_static_vars lvars;
4018 mds_init_lsd_cache();
4020 lprocfs_init_multi_vars(0, &lvars);
4021 class_register_type(&mds_obd_ops, NULL, lvars.module_vars,
4023 lprocfs_init_multi_vars(1, &lvars);
4024 class_register_type(&mdt_obd_ops, NULL, lvars.module_vars,
4030 static void /*__exit*/ mds_exit(void)
4032 mds_cleanup_lsd_cache();
4034 class_unregister_type(LUSTRE_MDS_NAME);
4035 class_unregister_type(LUSTRE_MDT_NAME);
4038 MODULE_AUTHOR("Cluster File Systems, Inc. <info@clusterfs.com>");
4039 MODULE_DESCRIPTION("Lustre Metadata Server (MDS)");
4040 MODULE_LICENSE("GPL");
4042 module_init(mds_init);
4043 module_exit(mds_exit);