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) 2001-2005 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 the Lustre file system, http://www.lustre.org
14 * Lustre is a trademark of Cluster File Systems, Inc.
16 * You may have signed or agreed to another license before downloading
17 * this software. If so, you are bound by the terms and conditions
18 * of that agreement, and the following does not apply to you. See the
19 * LICENSE file included with this distribution for more information.
21 * If you did not agree to a different license, then this copy of Lustre
22 * is open source software; you can redistribute it and/or modify it
23 * under the terms of version 2 of the GNU General Public License as
24 * published by the Free Software Foundation.
26 * In either case, Lustre is distributed in the hope that it will be
27 * useful, but WITHOUT ANY WARRANTY; without even the implied warranty
28 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
29 * license text for more details.
33 # define EXPORT_SYMTAB
35 #define DEBUG_SUBSYSTEM S_MDS
37 #include <lustre_mds.h>
38 #include <linux/module.h>
39 #include <linux/init.h>
40 #include <linux/random.h>
42 #include <linux/jbd.h>
43 #include <linux/smp_lock.h>
44 #include <linux/buffer_head.h>
45 #include <linux/workqueue.h>
46 #include <linux/mount.h>
48 #include <linux/lustre_acl.h>
49 #include <obd_class.h>
50 #include <lustre_dlm.h>
52 #include <lustre_fsfilt.h>
53 #include <lprocfs_status.h>
54 #include <lustre_commit_confd.h>
55 #include <lustre_quota.h>
56 #include <lustre_disk.h>
57 #include <lustre_param.h>
59 #include "mds_internal.h"
62 CFS_MODULE_PARM(mds_num_threads, "i", int, 0444,
63 "number of MDS service threads to start");
65 static int mds_intent_policy(struct ldlm_namespace *ns,
66 struct ldlm_lock **lockp, void *req_cookie,
67 ldlm_mode_t mode, int flags, void *data);
68 static int mds_postsetup(struct obd_device *obd);
69 static int mds_cleanup(struct obd_device *obd);
71 /* Assumes caller has already pushed into the kernel filesystem context */
72 static int mds_sendpage(struct ptlrpc_request *req, struct file *file,
73 loff_t offset, int count)
75 struct ptlrpc_bulk_desc *desc;
76 struct l_wait_info lwi;
78 int rc = 0, npages, i, tmpcount, tmpsize = 0;
81 LASSERT((offset & ~CFS_PAGE_MASK) == 0); /* I'm dubious about this */
83 npages = (count + CFS_PAGE_SIZE - 1) >> CFS_PAGE_SHIFT;
84 OBD_ALLOC(pages, sizeof(*pages) * npages);
86 GOTO(out, rc = -ENOMEM);
88 desc = ptlrpc_prep_bulk_exp(req, npages, BULK_PUT_SOURCE,
91 GOTO(out_free, rc = -ENOMEM);
93 for (i = 0, tmpcount = count; i < npages; i++, tmpcount -= tmpsize) {
94 tmpsize = tmpcount > CFS_PAGE_SIZE ? CFS_PAGE_SIZE : tmpcount;
96 pages[i] = cfs_alloc_page(CFS_ALLOC_STD);
98 GOTO(cleanup_buf, rc = -ENOMEM);
100 ptlrpc_prep_bulk_page(desc, pages[i], 0, tmpsize);
103 for (i = 0, tmpcount = count; i < npages; i++, tmpcount -= tmpsize) {
104 tmpsize = tmpcount > CFS_PAGE_SIZE ? CFS_PAGE_SIZE : tmpcount;
105 CDEBUG(D_EXT2, "reading %u@%llu from dir %lu (size %llu)\n",
106 tmpsize, offset, file->f_dentry->d_inode->i_ino,
107 i_size_read(file->f_dentry->d_inode));
109 rc = fsfilt_readpage(req->rq_export->exp_obd, file,
110 kmap(pages[i]), tmpsize, &offset);
114 GOTO(cleanup_buf, rc = -EIO);
117 LASSERT(desc->bd_nob == count);
119 rc = ptlrpc_start_bulk_transfer(desc);
121 GOTO(cleanup_buf, rc);
123 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_SENDPAGE)) {
124 CERROR("obd_fail_loc=%x, fail operation rc=%d\n",
125 OBD_FAIL_MDS_SENDPAGE, rc);
126 GOTO(abort_bulk, rc);
129 lwi = LWI_TIMEOUT(obd_timeout * HZ / 4, NULL, NULL);
130 rc = l_wait_event(desc->bd_waitq, !ptlrpc_bulk_active(desc), &lwi);
131 LASSERT (rc == 0 || rc == -ETIMEDOUT);
134 if (desc->bd_success &&
135 desc->bd_nob_transferred == count)
136 GOTO(cleanup_buf, rc);
138 rc = -ETIMEDOUT; /* XXX should this be a different errno? */
141 DEBUG_REQ(D_ERROR, req, "bulk failed: %s %d(%d), evicting %s@%s",
142 (rc == -ETIMEDOUT) ? "timeout" : "network error",
143 desc->bd_nob_transferred, count,
144 req->rq_export->exp_client_uuid.uuid,
145 req->rq_export->exp_connection->c_remote_uuid.uuid);
147 class_fail_export(req->rq_export);
151 ptlrpc_abort_bulk (desc);
153 for (i = 0; i < npages; i++)
155 __cfs_free_page(pages[i]);
157 ptlrpc_free_bulk(desc);
159 OBD_FREE(pages, sizeof(*pages) * npages);
164 /* only valid locked dentries or errors should be returned */
165 struct dentry *mds_fid2locked_dentry(struct obd_device *obd, struct ll_fid *fid,
166 struct vfsmount **mnt, int lock_mode,
167 struct lustre_handle *lockh,
170 struct mds_obd *mds = &obd->u.mds;
171 struct dentry *de = mds_fid2dentry(mds, fid, mnt), *retval = de;
172 struct ldlm_res_id res_id = { .name = {0} };
173 int flags = LDLM_FL_ATOMIC_CB, rc;
174 ldlm_policy_data_t policy = { .l_inodebits = { lockpart} };
180 res_id.name[0] = de->d_inode->i_ino;
181 res_id.name[1] = de->d_inode->i_generation;
182 rc = ldlm_cli_enqueue_local(obd->obd_namespace, &res_id,
183 LDLM_IBITS, &policy, lock_mode, &flags,
184 ldlm_blocking_ast, ldlm_completion_ast,
185 NULL, NULL, 0, NULL, lockh);
186 if (rc != ELDLM_OK) {
188 retval = ERR_PTR(-EIO); /* XXX translate ldlm code */
194 /* Look up an entry by inode number. */
195 /* this function ONLY returns valid dget'd dentries with an initialized inode
197 struct dentry *mds_fid2dentry(struct mds_obd *mds, struct ll_fid *fid,
198 struct vfsmount **mnt)
201 unsigned long ino = fid->id;
202 __u32 generation = fid->generation;
204 struct dentry *result;
207 RETURN(ERR_PTR(-ESTALE));
209 snprintf(fid_name, sizeof(fid_name), "0x%lx", ino);
211 CDEBUG(D_DENTRY, "--> mds_fid2dentry: ino/gen %lu/%u, sb %p\n",
212 ino, generation, mds->mds_obt.obt_sb);
214 /* under ext3 this is neither supposed to return bad inodes
216 result = ll_lookup_one_len(fid_name, mds->mds_fid_de, strlen(fid_name));
220 inode = result->d_inode;
222 RETURN(ERR_PTR(-ENOENT));
224 if (inode->i_generation == 0 || inode->i_nlink == 0) {
225 LCONSOLE_WARN("Found inode with zero generation or link -- this"
226 " may indicate disk corruption (inode: %lu/%u, "
227 "link %lu, count %d)\n", inode->i_ino,
228 inode->i_generation,(unsigned long)inode->i_nlink,
229 atomic_read(&inode->i_count));
231 RETURN(ERR_PTR(-ENOENT));
234 if (generation && inode->i_generation != generation) {
235 /* we didn't find the right inode.. */
236 CDEBUG(D_INODE, "found wrong generation: inode %lu, link: %lu, "
237 "count: %d, generation %u/%u\n", inode->i_ino,
238 (unsigned long)inode->i_nlink,
239 atomic_read(&inode->i_count), inode->i_generation,
242 RETURN(ERR_PTR(-ENOENT));
246 *mnt = mds->mds_vfsmnt;
253 static int mds_connect_internal(struct obd_export *exp,
254 struct obd_connect_data *data)
256 struct obd_device *obd = exp->exp_obd;
258 data->ocd_connect_flags &= MDT_CONNECT_SUPPORTED;
259 data->ocd_ibits_known &= MDS_INODELOCK_FULL;
261 /* If no known bits (which should not happen, probably,
262 as everybody should support LOOKUP and UPDATE bits at least)
263 revert to compat mode with plain locks. */
264 if (!data->ocd_ibits_known &&
265 data->ocd_connect_flags & OBD_CONNECT_IBITS)
266 data->ocd_connect_flags &= ~OBD_CONNECT_IBITS;
268 if (!obd->u.mds.mds_fl_acl)
269 data->ocd_connect_flags &= ~OBD_CONNECT_ACL;
271 if (!obd->u.mds.mds_fl_user_xattr)
272 data->ocd_connect_flags &= ~OBD_CONNECT_XATTR;
274 exp->exp_connect_flags = data->ocd_connect_flags;
275 data->ocd_version = LUSTRE_VERSION_CODE;
276 exp->exp_mds_data.med_ibits_known = data->ocd_ibits_known;
279 if (obd->u.mds.mds_fl_acl &&
280 ((exp->exp_connect_flags & OBD_CONNECT_ACL) == 0)) {
281 CWARN("%s: MDS requires ACL support but client does not\n",
288 static int mds_reconnect(struct obd_export *exp, struct obd_device *obd,
289 struct obd_uuid *cluuid,
290 struct obd_connect_data *data)
295 if (exp == NULL || obd == NULL || cluuid == NULL)
298 rc = mds_connect_internal(exp, data);
303 /* Establish a connection to the MDS.
305 * This will set up an export structure for the client to hold state data
306 * about that client, like open files, the last operation number it did
307 * on the server, etc.
309 static int mds_connect(const struct lu_env *env,
310 struct lustre_handle *conn, struct obd_device *obd,
311 struct obd_uuid *cluuid, struct obd_connect_data *data)
313 struct obd_export *exp;
314 struct mds_export_data *med;
315 struct mds_client_data *mcd = NULL;
319 if (!conn || !obd || !cluuid)
322 /* XXX There is a small race between checking the list and adding a
323 * new connection for the same UUID, but the real threat (list
324 * corruption when multiple different clients connect) is solved.
326 * There is a second race between adding the export to the list,
327 * and filling in the client data below. Hence skipping the case
328 * of NULL mcd above. We should already be controlling multiple
329 * connects at the client, and we can't hold the spinlock over
330 * memory allocations without risk of deadlocking.
332 rc = class_connect(conn, obd, cluuid);
335 exp = class_conn2export(conn);
337 med = &exp->exp_mds_data;
339 rc = mds_connect_internal(exp, data);
343 OBD_ALLOC(mcd, sizeof(*mcd));
345 GOTO(out, rc = -ENOMEM);
347 memcpy(mcd->mcd_uuid, cluuid, sizeof(mcd->mcd_uuid));
350 rc = mds_client_add(obd, exp, -1);
356 OBD_FREE(mcd, sizeof(*mcd));
359 class_disconnect(exp);
361 class_export_put(exp);
367 int mds_init_export(struct obd_export *exp)
369 struct mds_export_data *med = &exp->exp_mds_data;
371 INIT_LIST_HEAD(&med->med_open_head);
372 spin_lock_init(&med->med_open_lock);
374 spin_lock(&exp->exp_lock);
375 exp->exp_connecting = 1;
376 spin_unlock(&exp->exp_lock);
381 static int mds_destroy_export(struct obd_export *export)
383 struct mds_export_data *med;
384 struct obd_device *obd = export->exp_obd;
385 struct mds_obd *mds = &obd->u.mds;
386 struct lvfs_run_ctxt saved;
387 struct lov_mds_md *lmm;
388 struct llog_cookie *logcookies;
392 med = &export->exp_mds_data;
393 target_destroy_export(export);
395 if (obd_uuid_equals(&export->exp_client_uuid, &obd->obd_uuid))
398 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
399 /* Close any open files (which may also cause orphan unlinking). */
401 OBD_ALLOC(lmm, mds->mds_max_mdsize);
403 CWARN("%s: allocation failure during cleanup; can not force "
404 "close file handles on this service.\n", obd->obd_name);
405 GOTO(out, rc = -ENOMEM);
408 OBD_ALLOC(logcookies, mds->mds_max_cookiesize);
409 if (logcookies == NULL) {
410 CWARN("%s: allocation failure during cleanup; can not force "
411 "close file handles on this service.\n", obd->obd_name);
412 OBD_FREE(lmm, mds->mds_max_mdsize);
413 GOTO(out_lmm, rc = -ENOMEM);
416 spin_lock(&med->med_open_lock);
417 while (!list_empty(&med->med_open_head)) {
418 struct list_head *tmp = med->med_open_head.next;
419 struct mds_file_data *mfd =
420 list_entry(tmp, struct mds_file_data, mfd_list);
421 int lmm_size = mds->mds_max_mdsize;
422 umode_t mode = mfd->mfd_dentry->d_inode->i_mode;
425 /* Remove mfd handle so it can't be found again.
426 * We are consuming the mfd_list reference here. */
427 mds_mfd_unlink(mfd, 0);
428 spin_unlock(&med->med_open_lock);
430 /* If you change this message, be sure to update
431 * replay_single:test_46 */
432 CDEBUG(D_INODE|D_IOCTL, "%s: force closing file handle for "
433 "%.*s (ino %lu)\n", obd->obd_name,
434 mfd->mfd_dentry->d_name.len,mfd->mfd_dentry->d_name.name,
435 mfd->mfd_dentry->d_inode->i_ino);
437 rc = mds_get_md(obd, mfd->mfd_dentry->d_inode, lmm, &lmm_size, 1);
439 CWARN("mds_get_md failure, rc=%d\n", rc);
441 valid |= OBD_MD_FLEASIZE;
443 /* child orphan sem protects orphan_dec_test and
444 * is_orphan race, mds_mfd_close drops it */
445 MDS_DOWN_WRITE_ORPHAN_SEM(mfd->mfd_dentry->d_inode);
446 rc = mds_mfd_close(NULL, REQ_REC_OFF, obd, mfd,
447 !(export->exp_flags & OBD_OPT_FAILOVER),
448 lmm, lmm_size, logcookies,
449 mds->mds_max_cookiesize,
453 CDEBUG(D_INODE|D_IOCTL, "Error closing file: %d\n", rc);
455 if (valid & OBD_MD_FLCOOKIE) {
456 rc = mds_osc_destroy_orphan(obd, mode, lmm,
457 lmm_size, logcookies, 1);
459 CDEBUG(D_INODE, "%s: destroy of orphan failed,"
460 " rc = %d\n", obd->obd_name, rc);
463 valid &= ~OBD_MD_FLCOOKIE;
466 spin_lock(&med->med_open_lock);
468 spin_unlock(&med->med_open_lock);
470 OBD_FREE(logcookies, mds->mds_max_cookiesize);
472 OBD_FREE(lmm, mds->mds_max_mdsize);
474 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
475 mds_client_free(export);
479 static int mds_disconnect(struct obd_export *exp)
485 class_export_get(exp);
487 /* Disconnect early so that clients can't keep using export */
488 rc = class_disconnect(exp);
489 if (exp->exp_obd->obd_namespace != NULL)
490 ldlm_cancel_locks_for_export(exp);
492 /* complete all outstanding replies */
493 spin_lock(&exp->exp_lock);
494 while (!list_empty(&exp->exp_outstanding_replies)) {
495 struct ptlrpc_reply_state *rs =
496 list_entry(exp->exp_outstanding_replies.next,
497 struct ptlrpc_reply_state, rs_exp_list);
498 struct ptlrpc_service *svc = rs->rs_service;
500 spin_lock(&svc->srv_lock);
501 list_del_init(&rs->rs_exp_list);
502 ptlrpc_schedule_difficult_reply(rs);
503 spin_unlock(&svc->srv_lock);
505 spin_unlock(&exp->exp_lock);
507 class_export_put(exp);
511 static int mds_getstatus(struct ptlrpc_request *req)
513 struct mds_obd *mds = mds_req2mds(req);
514 struct mds_body *body;
515 int rc, size[2] = { sizeof(struct ptlrpc_body), sizeof(*body) };
518 rc = lustre_pack_reply(req, 2, size, NULL);
519 if (rc || OBD_FAIL_CHECK(OBD_FAIL_MDS_GETSTATUS_PACK)) {
520 CERROR("mds: out of memory for message\n");
521 req->rq_status = -ENOMEM; /* superfluous? */
525 body = lustre_msg_buf(req->rq_repmsg, REPLY_REC_OFF, sizeof(*body));
526 memcpy(&body->fid1, &mds->mds_rootfid, sizeof(body->fid1));
528 /* the last_committed and last_xid fields are filled in for all
529 * replies already - no need to do so here also.
534 /* get the LOV EA from @inode and store it into @md. It can be at most
535 * @size bytes, and @size is updated with the actual EA size.
536 * The EA size is also returned on success, and -ve errno on failure.
537 * If there is no EA then 0 is returned. */
538 int mds_get_md(struct obd_device *obd, struct inode *inode, void *md,
545 LOCK_INODE_MUTEX(inode);
546 rc = fsfilt_get_md(obd, inode, md, *size, "lov");
549 CERROR("Error %d reading eadata for ino %lu\n",
553 rc = mds_convert_lov_ea(obd, inode, md, lmm_size);
565 UNLOCK_INODE_MUTEX(inode);
571 /* Call with lock=1 if you want mds_pack_md to take the i_mutex.
572 * Call with lock=0 if the caller has already taken the i_mutex. */
573 int mds_pack_md(struct obd_device *obd, struct lustre_msg *msg, int offset,
574 struct mds_body *body, struct inode *inode, int lock)
576 struct mds_obd *mds = &obd->u.mds;
582 lmm = lustre_msg_buf(msg, offset, 0);
584 /* Some problem with getting eadata when I sized the reply
586 CDEBUG(D_INFO, "no space reserved for inode %lu MD\n",
590 lmm_size = lustre_msg_buflen(msg, offset);
592 /* I don't really like this, but it is a sanity check on the client
593 * MD request. However, if the client doesn't know how much space
594 * to reserve for the MD, it shouldn't be bad to have too much space.
596 if (lmm_size > mds->mds_max_mdsize) {
597 CWARN("Reading MD for inode %lu of %d bytes > max %d\n",
598 inode->i_ino, lmm_size, mds->mds_max_mdsize);
602 rc = mds_get_md(obd, inode, lmm, &lmm_size, lock);
604 if (S_ISDIR(inode->i_mode))
605 body->valid |= OBD_MD_FLDIREA;
607 body->valid |= OBD_MD_FLEASIZE;
608 body->eadatasize = lmm_size;
615 #ifdef CONFIG_FS_POSIX_ACL
617 int mds_pack_posix_acl(struct inode *inode, struct lustre_msg *repmsg,
618 struct mds_body *repbody, int repoff)
620 struct dentry de = { .d_inode = inode };
624 LASSERT(repbody->aclsize == 0);
625 LASSERT(lustre_msg_bufcount(repmsg) > repoff);
627 buflen = lustre_msg_buflen(repmsg, repoff);
631 if (!inode->i_op || !inode->i_op->getxattr)
634 rc = inode->i_op->getxattr(&de, MDS_XATTR_NAME_ACL_ACCESS,
635 lustre_msg_buf(repmsg, repoff, buflen),
639 repbody->aclsize = rc;
640 else if (rc != -ENODATA) {
641 CERROR("buflen %d, get acl: %d\n", buflen, rc);
646 repbody->valid |= OBD_MD_FLACL;
650 #define mds_pack_posix_acl(inode, repmsg, repbody, repoff) 0
653 int mds_pack_acl(struct mds_export_data *med, struct inode *inode,
654 struct lustre_msg *repmsg, struct mds_body *repbody,
657 return mds_pack_posix_acl(inode, repmsg, repbody, repoff);
660 static int mds_getattr_internal(struct obd_device *obd, struct dentry *dentry,
661 struct ptlrpc_request *req,
662 struct mds_body *reqbody, int reply_off)
664 struct mds_body *body;
665 struct inode *inode = dentry->d_inode;
672 body = lustre_msg_buf(req->rq_repmsg, reply_off, sizeof(*body));
673 LASSERT(body != NULL); /* caller prepped reply */
675 mds_pack_inode2fid(&body->fid1, inode);
676 body->flags = reqbody->flags; /* copy MDS_BFLAG_EXT_FLAGS if present */
677 mds_pack_inode2body(body, inode);
680 if ((S_ISREG(inode->i_mode) && (reqbody->valid & OBD_MD_FLEASIZE)) ||
681 (S_ISDIR(inode->i_mode) && (reqbody->valid & OBD_MD_FLDIREA))) {
682 rc = mds_pack_md(obd, req->rq_repmsg, reply_off, body,
685 /* If we have LOV EA data, the OST holds size, atime, mtime */
686 if (!(body->valid & OBD_MD_FLEASIZE) &&
687 !(body->valid & OBD_MD_FLDIREA))
688 body->valid |= (OBD_MD_FLSIZE | OBD_MD_FLBLOCKS |
689 OBD_MD_FLATIME | OBD_MD_FLMTIME);
691 lustre_shrink_reply(req, reply_off, body->eadatasize, 0);
692 if (body->eadatasize)
694 } else if (S_ISLNK(inode->i_mode) &&
695 (reqbody->valid & OBD_MD_LINKNAME) != 0) {
696 char *symname = lustre_msg_buf(req->rq_repmsg, reply_off, 0);
699 LASSERT (symname != NULL); /* caller prepped reply */
700 len = lustre_msg_buflen(req->rq_repmsg, reply_off);
702 rc = inode->i_op->readlink(dentry, symname, len);
704 CERROR("readlink failed: %d\n", rc);
705 } else if (rc != len - 1) {
706 CERROR ("Unexpected readlink rc %d: expecting %d\n",
710 CDEBUG(D_INODE, "read symlink dest %s\n", symname);
711 body->valid |= OBD_MD_LINKNAME;
712 body->eadatasize = rc + 1;
713 symname[rc] = 0; /* NULL terminate */
717 } else if (reqbody->valid == OBD_MD_FLFLAGS &&
718 reqbody->flags & MDS_BFLAG_EXT_FLAGS) {
721 /* We only return the full set of flags on ioctl, otherwise we
722 * get enough flags from the inode in mds_pack_inode2body(). */
723 rc = fsfilt_iocontrol(obd, inode, NULL, EXT3_IOC_GETFLAGS,
726 body->flags = flags | MDS_BFLAG_EXT_FLAGS;
729 if (reqbody->valid & OBD_MD_FLMODEASIZE) {
730 struct mds_obd *mds = mds_req2mds(req);
731 body->max_cookiesize = mds->mds_max_cookiesize;
732 body->max_mdsize = mds->mds_max_mdsize;
733 body->valid |= OBD_MD_FLMODEASIZE;
739 #ifdef CONFIG_FS_POSIX_ACL
740 if ((req->rq_export->exp_connect_flags & OBD_CONNECT_ACL) &&
741 (reqbody->valid & OBD_MD_FLACL)) {
742 rc = mds_pack_acl(&req->rq_export->exp_mds_data,
743 inode, req->rq_repmsg,
746 lustre_shrink_reply(req, reply_off, body->aclsize, 0);
755 static int mds_getattr_pack_msg(struct ptlrpc_request *req, struct inode *inode,
758 struct mds_obd *mds = mds_req2mds(req);
759 struct mds_body *body;
760 int rc, bufcount = 2;
761 int size[4] = { sizeof(struct ptlrpc_body), sizeof(*body) };
764 LASSERT(offset == REQ_REC_OFF); /* non-intent */
766 body = lustre_msg_buf(req->rq_reqmsg, offset, sizeof(*body));
767 LASSERT(body != NULL); /* checked by caller */
768 LASSERT_REQSWABBED(req, offset); /* swabbed by caller */
770 if ((S_ISREG(inode->i_mode) && (body->valid & OBD_MD_FLEASIZE)) ||
771 (S_ISDIR(inode->i_mode) && (body->valid & OBD_MD_FLDIREA))) {
772 LOCK_INODE_MUTEX(inode);
773 rc = fsfilt_get_md(req->rq_export->exp_obd, inode, NULL, 0,
775 UNLOCK_INODE_MUTEX(inode);
776 CDEBUG(D_INODE, "got %d bytes MD data for inode %lu\n",
779 if (rc != -ENODATA) {
780 CERROR("error getting inode %lu MD: rc = %d\n",
785 } else if (rc > mds->mds_max_mdsize) {
787 CERROR("MD size %d larger than maximum possible %u\n",
788 rc, mds->mds_max_mdsize);
793 } else if (S_ISLNK(inode->i_mode) && (body->valid & OBD_MD_LINKNAME)) {
794 if (i_size_read(inode) + 1 != body->eadatasize)
795 CERROR("symlink size: %Lu, reply space: %d\n",
796 i_size_read(inode) + 1, body->eadatasize);
797 size[bufcount] = min_t(int, i_size_read(inode) + 1,
800 CDEBUG(D_INODE, "symlink size: %Lu, reply space: %d\n",
801 i_size_read(inode) + 1, body->eadatasize);
804 #ifdef CONFIG_FS_POSIX_ACL
805 if ((req->rq_export->exp_connect_flags & OBD_CONNECT_ACL) &&
806 (body->valid & OBD_MD_FLACL)) {
807 struct dentry de = { .d_inode = inode };
810 if (inode->i_op && inode->i_op->getxattr) {
811 rc = inode->i_op->getxattr(&de, MDS_XATTR_NAME_ACL_ACCESS,
815 if (rc != -ENODATA) {
816 CERROR("got acl size: %d\n", rc);
826 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_GETATTR_PACK)) {
827 CERROR("failed MDS_GETATTR_PACK test\n");
828 req->rq_status = -ENOMEM;
832 rc = lustre_pack_reply(req, bufcount, size, NULL);
834 CERROR("lustre_pack_reply failed: rc %d\n", rc);
842 static int mds_getattr_lock(struct ptlrpc_request *req, int offset,
843 int child_part, struct lustre_handle *child_lockh)
845 struct obd_device *obd = req->rq_export->exp_obd;
846 struct mds_obd *mds = &obd->u.mds;
847 struct ldlm_reply *rep = NULL;
848 struct lvfs_run_ctxt saved;
849 struct mds_body *body;
850 struct dentry *dparent = NULL, *dchild = NULL;
851 struct lvfs_ucred uc = {0,};
852 struct lustre_handle parent_lockh;
854 int rc = 0, cleanup_phase = 0, resent_req = 0;
858 LASSERT(!strcmp(obd->obd_type->typ_name, LUSTRE_MDS_NAME));
860 /* Swab now, before anyone looks inside the request */
861 body = lustre_swab_reqbuf(req, offset, sizeof(*body),
862 lustre_swab_mds_body);
864 CERROR("Can't swab mds_body\n");
868 LASSERT_REQSWAB(req, offset + 1);
869 name = lustre_msg_string(req->rq_reqmsg, offset + 1, 0);
871 CERROR("Can't unpack name\n");
874 namesize = lustre_msg_buflen(req->rq_reqmsg, offset + 1);
875 /* namesize less than 2 means we have empty name, probably came from
876 revalidate by cfid, so no point in having name to be set */
880 rc = mds_init_ucred(&uc, req, offset);
884 LASSERT(offset == REQ_REC_OFF || offset == DLM_INTENT_REC_OFF);
885 /* if requests were at offset 2, the getattr reply goes back at 1 */
886 if (offset == DLM_INTENT_REC_OFF) {
887 rep = lustre_msg_buf(req->rq_repmsg, DLM_LOCKREPLY_OFF,
889 offset = DLM_REPLY_REC_OFF;
892 push_ctxt(&saved, &obd->obd_lvfs_ctxt, &uc);
893 cleanup_phase = 1; /* kernel context */
894 intent_set_disposition(rep, DISP_LOOKUP_EXECD);
896 /* FIXME: handle raw lookup */
898 if (body->valid == OBD_MD_FLID) {
899 struct mds_body *mds_reply;
900 int size = sizeof(*mds_reply);
902 // The user requested ONLY the inode number, so do a raw lookup
903 rc = lustre_pack_reply(req, 1, &size, NULL);
905 CERROR("out of memory\n");
909 rc = dir->i_op->lookup_raw(dir, name, namesize - 1, &inum);
911 mds_reply = lustre_msg_buf(req->rq_repmsg, offset,
913 mds_reply->fid1.id = inum;
914 mds_reply->valid = OBD_MD_FLID;
919 if (lustre_handle_is_used(child_lockh)) {
920 LASSERT(lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT);
924 if (resent_req == 0) {
926 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_RESEND, obd_timeout * 2);
927 rc = mds_get_parent_child_locked(obd, &obd->u.mds,
931 MDS_INODELOCK_UPDATE,
933 child_lockh, &dchild,
936 /* For revalidate by fid we always take UPDATE lock */
937 dchild = mds_fid2locked_dentry(obd, &body->fid2, NULL,
942 rc = PTR_ERR(dchild);
947 struct ldlm_lock *granted_lock;
948 struct ll_fid child_fid;
949 struct ldlm_resource *res;
950 DEBUG_REQ(D_DLMTRACE, req, "resent, not enqueuing new locks");
951 granted_lock = ldlm_handle2lock(child_lockh);
952 LASSERTF(granted_lock != NULL, LPU64"/%u lockh "LPX64"\n",
953 body->fid1.id, body->fid1.generation,
954 child_lockh->cookie);
957 res = granted_lock->l_resource;
958 child_fid.id = res->lr_name.name[0];
959 child_fid.generation = res->lr_name.name[1];
960 dchild = mds_fid2dentry(&obd->u.mds, &child_fid, NULL);
961 LASSERT(!IS_ERR(dchild));
962 LDLM_LOCK_PUT(granted_lock);
965 cleanup_phase = 2; /* dchild, dparent, locks */
967 if (dchild->d_inode == NULL) {
968 intent_set_disposition(rep, DISP_LOOKUP_NEG);
969 /* in the intent case, the policy clears this error:
970 the disposition is enough */
971 GOTO(cleanup, rc = -ENOENT);
973 intent_set_disposition(rep, DISP_LOOKUP_POS);
976 if (req->rq_repmsg == NULL) {
977 rc = mds_getattr_pack_msg(req, dchild->d_inode, offset);
979 CERROR ("mds_getattr_pack_msg: %d\n", rc);
984 rc = mds_getattr_internal(obd, dchild, req, body, offset);
985 GOTO(cleanup, rc); /* returns the lock to the client */
988 switch (cleanup_phase) {
990 if (resent_req == 0) {
991 if (rc && dchild->d_inode)
992 ldlm_lock_decref(child_lockh, LCK_CR);
994 ldlm_lock_decref(&parent_lockh, LCK_CR);
1000 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, &uc);
1002 mds_exit_ucred(&uc, mds);
1003 if (req->rq_reply_state == NULL) {
1004 req->rq_status = rc;
1005 lustre_pack_reply(req, 1, NULL, NULL);
1011 static int mds_getattr(struct ptlrpc_request *req, int offset)
1013 struct mds_obd *mds = mds_req2mds(req);
1014 struct obd_device *obd = req->rq_export->exp_obd;
1015 struct lvfs_run_ctxt saved;
1017 struct mds_body *body;
1018 struct lvfs_ucred uc = {0,};
1022 OBD_COUNTER_INCREMENT(obd, getattr);
1024 body = lustre_swab_reqbuf(req, offset, sizeof(*body),
1025 lustre_swab_mds_body);
1029 rc = mds_init_ucred(&uc, req, offset);
1031 GOTO(out_ucred, rc);
1033 push_ctxt(&saved, &obd->obd_lvfs_ctxt, &uc);
1034 de = mds_fid2dentry(mds, &body->fid1, NULL);
1036 rc = req->rq_status = PTR_ERR(de);
1040 rc = mds_getattr_pack_msg(req, de->d_inode, offset);
1042 CERROR("mds_getattr_pack_msg: %d\n", rc);
1046 req->rq_status = mds_getattr_internal(obd, de, req, body,
1052 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, &uc);
1054 if (req->rq_reply_state == NULL) {
1055 req->rq_status = rc;
1056 lustre_pack_reply(req, 1, NULL, NULL);
1058 mds_exit_ucred(&uc, mds);
1062 static int mds_obd_statfs(struct obd_device *obd, struct obd_statfs *osfs,
1067 spin_lock(&obd->obd_osfs_lock);
1068 rc = fsfilt_statfs(obd, obd->u.obt.obt_sb, max_age);
1070 memcpy(osfs, &obd->obd_osfs, sizeof(*osfs));
1071 spin_unlock(&obd->obd_osfs_lock);
1076 static int mds_statfs(struct ptlrpc_request *req)
1078 struct obd_device *obd = req->rq_export->exp_obd;
1079 int rc, size[2] = { sizeof(struct ptlrpc_body),
1080 sizeof(struct obd_statfs) };
1083 /* This will trigger a watchdog timeout */
1084 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_STATFS_LCW_SLEEP,
1085 (MDS_SERVICE_WATCHDOG_TIMEOUT / 1000) + 1);
1086 OBD_COUNTER_INCREMENT(obd, statfs);
1088 rc = lustre_pack_reply(req, 2, size, NULL);
1089 if (rc || OBD_FAIL_CHECK(OBD_FAIL_MDS_STATFS_PACK)) {
1090 CERROR("mds: statfs lustre_pack_reply failed: rc = %d\n", rc);
1094 /* We call this so that we can cache a bit - 1 jiffie worth */
1095 rc = mds_obd_statfs(obd, lustre_msg_buf(req->rq_repmsg, REPLY_REC_OFF,
1096 size[REPLY_REC_OFF]),
1097 cfs_time_current_64() - HZ);
1099 CERROR("mds_obd_statfs failed: rc %d\n", rc);
1105 req->rq_status = rc;
1109 static int mds_sync(struct ptlrpc_request *req, int offset)
1111 struct obd_device *obd = req->rq_export->exp_obd;
1112 struct mds_obd *mds = &obd->u.mds;
1113 struct mds_body *body;
1114 int rc, size[2] = { sizeof(struct ptlrpc_body), sizeof(*body) };
1117 body = lustre_swab_reqbuf(req, offset, sizeof(*body),
1118 lustre_swab_mds_body);
1120 GOTO(out, rc = -EFAULT);
1122 rc = lustre_pack_reply(req, 2, size, NULL);
1123 if (rc || OBD_FAIL_CHECK(OBD_FAIL_MDS_SYNC_PACK)) {
1124 CERROR("fsync lustre_pack_reply failed: rc = %d\n", rc);
1128 if (body->fid1.id == 0) {
1129 /* a fid of zero is taken to mean "sync whole filesystem" */
1130 rc = fsfilt_sync(obd, obd->u.obt.obt_sb);
1135 de = mds_fid2dentry(mds, &body->fid1, NULL);
1137 GOTO(out, rc = PTR_ERR(de));
1139 /* The file parameter isn't used for anything */
1140 if (de->d_inode->i_fop && de->d_inode->i_fop->fsync)
1141 rc = de->d_inode->i_fop->fsync(NULL, de, 1);
1143 body = lustre_msg_buf(req->rq_repmsg, REPLY_REC_OFF,
1145 mds_pack_inode2fid(&body->fid1, de->d_inode);
1146 mds_pack_inode2body(body, de->d_inode);
1153 req->rq_status = rc;
1157 /* mds_readpage does not take a DLM lock on the inode, because the client must
1158 * already have a PR lock.
1160 * If we were to take another one here, a deadlock will result, if another
1161 * thread is already waiting for a PW lock. */
1162 static int mds_readpage(struct ptlrpc_request *req, int offset)
1164 struct obd_device *obd = req->rq_export->exp_obd;
1165 struct mds_obd *mds = &obd->u.mds;
1166 struct vfsmount *mnt;
1169 struct mds_body *body, *repbody;
1170 struct lvfs_run_ctxt saved;
1171 int rc, size[2] = { sizeof(struct ptlrpc_body), sizeof(*repbody) };
1172 struct lvfs_ucred uc = {0,};
1175 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_READPAGE_PACK))
1178 rc = lustre_pack_reply(req, 2, size, NULL);
1180 CERROR("error packing readpage reply: rc %d\n", rc);
1184 body = lustre_swab_reqbuf(req, offset, sizeof(*body),
1185 lustre_swab_mds_body);
1187 GOTO (out, rc = -EFAULT);
1189 rc = mds_init_ucred(&uc, req, offset);
1193 push_ctxt(&saved, &obd->obd_lvfs_ctxt, &uc);
1194 de = mds_fid2dentry(&obd->u.mds, &body->fid1, &mnt);
1196 GOTO(out_pop, rc = PTR_ERR(de));
1198 CDEBUG(D_INODE, "ino %lu\n", de->d_inode->i_ino);
1200 file = dentry_open(de, mnt, O_RDONLY | O_LARGEFILE);
1201 /* note: in case of an error, dentry_open puts dentry */
1203 GOTO(out_pop, rc = PTR_ERR(file));
1205 /* body->size is actually the offset -eeb */
1206 if ((body->size & (de->d_inode->i_sb->s_blocksize - 1)) != 0) {
1207 CERROR("offset "LPU64" not on a block boundary of %lu\n",
1208 body->size, de->d_inode->i_sb->s_blocksize);
1209 GOTO(out_file, rc = -EFAULT);
1212 /* body->nlink is actually the #bytes to read -eeb */
1213 if (body->nlink & (de->d_inode->i_sb->s_blocksize - 1)) {
1214 CERROR("size %u is not multiple of blocksize %lu\n",
1215 body->nlink, de->d_inode->i_sb->s_blocksize);
1216 GOTO(out_file, rc = -EFAULT);
1219 repbody = lustre_msg_buf(req->rq_repmsg, REPLY_REC_OFF,
1221 repbody->size = i_size_read(file->f_dentry->d_inode);
1222 repbody->valid = OBD_MD_FLSIZE;
1224 /* to make this asynchronous make sure that the handling function
1225 doesn't send a reply when this function completes. Instead a
1226 callback function would send the reply */
1227 /* body->size is actually the offset -eeb */
1228 rc = mds_sendpage(req, file, body->size, body->nlink);
1231 filp_close(file, 0);
1233 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, &uc);
1235 mds_exit_ucred(&uc, mds);
1236 req->rq_status = rc;
1240 int mds_reint(struct ptlrpc_request *req, int offset,
1241 struct lustre_handle *lockh)
1243 struct mds_update_record *rec; /* 116 bytes on the stack? no sir! */
1246 OBD_ALLOC(rec, sizeof(*rec));
1250 rc = mds_update_unpack(req, offset, rec);
1251 if (rc || OBD_FAIL_CHECK(OBD_FAIL_MDS_REINT_UNPACK)) {
1252 CERROR("invalid record\n");
1253 GOTO(out, req->rq_status = -EINVAL);
1256 /* rc will be used to interrupt a for loop over multiple records */
1257 rc = mds_reint_rec(rec, offset, req, lockh);
1259 OBD_FREE(rec, sizeof(*rec));
1263 int mds_filter_recovery_request(struct ptlrpc_request *req,
1264 struct obd_device *obd, int *process)
1266 switch (lustre_msg_get_opc(req->rq_reqmsg)) {
1267 case MDS_CONNECT: /* This will never get here, but for completeness. */
1268 case OST_CONNECT: /* This will never get here, but for completeness. */
1269 case MDS_DISCONNECT:
1270 case OST_DISCONNECT:
1275 case MDS_DONE_WRITING:
1276 case MDS_SYNC: /* used in unmounting */
1282 *process = target_queue_recovery_request(req, obd);
1286 DEBUG_REQ(D_ERROR, req, "not permitted during recovery");
1291 EXPORT_SYMBOL(mds_filter_recovery_request);
1293 static char *reint_names[] = {
1294 [REINT_SETATTR] "setattr",
1295 [REINT_CREATE] "create",
1296 [REINT_LINK] "link",
1297 [REINT_UNLINK] "unlink",
1298 [REINT_RENAME] "rename",
1299 [REINT_OPEN] "open",
1302 static int mds_set_info_rpc(struct obd_export *exp, struct ptlrpc_request *req)
1309 key = lustre_msg_buf(req->rq_reqmsg, REQ_REC_OFF, 1);
1311 DEBUG_REQ(D_HA, req, "no set_info key");
1314 keylen = lustre_msg_buflen(req->rq_reqmsg, REQ_REC_OFF);
1316 val = lustre_msg_buf(req->rq_reqmsg, REQ_REC_OFF + 1, sizeof(*val));
1318 DEBUG_REQ(D_HA, req, "no set_info val");
1322 rc = lustre_pack_reply(req, 1, NULL, NULL);
1325 lustre_msg_set_status(req->rq_repmsg, 0);
1327 if (keylen < strlen("read-only") ||
1328 memcmp(key, "read-only", keylen) != 0)
1332 exp->exp_connect_flags |= OBD_CONNECT_RDONLY;
1334 exp->exp_connect_flags &= ~OBD_CONNECT_RDONLY;
1339 static int mds_handle_quotacheck(struct ptlrpc_request *req)
1341 struct obd_quotactl *oqctl;
1345 oqctl = lustre_swab_reqbuf(req, REQ_REC_OFF, sizeof(*oqctl),
1346 lustre_swab_obd_quotactl);
1350 rc = lustre_pack_reply(req, 1, NULL, NULL);
1352 CERROR("mds: out of memory while packing quotacheck reply\n");
1356 req->rq_status = obd_quotacheck(req->rq_export, oqctl);
1360 static int mds_handle_quotactl(struct ptlrpc_request *req)
1362 struct obd_quotactl *oqctl, *repoqc;
1363 int rc, size[2] = { sizeof(struct ptlrpc_body), sizeof(*repoqc) };
1366 oqctl = lustre_swab_reqbuf(req, REQ_REC_OFF, sizeof(*oqctl),
1367 lustre_swab_obd_quotactl);
1371 rc = lustre_pack_reply(req, 2, size, NULL);
1375 repoqc = lustre_msg_buf(req->rq_repmsg, REPLY_REC_OFF, sizeof(*repoqc));
1377 req->rq_status = obd_quotactl(req->rq_export, oqctl);
1382 int mds_msg_check_version(struct lustre_msg *msg)
1386 switch (lustre_msg_get_opc(msg)) {
1388 case MDS_DISCONNECT:
1391 case SEC_CTX_INIT_CONT:
1393 rc = lustre_msg_check_version(msg, LUSTRE_OBD_VERSION);
1395 CERROR("bad opc %u version %08x, expecting %08x\n",
1396 lustre_msg_get_opc(msg),
1397 lustre_msg_get_version(msg),
1398 LUSTRE_OBD_VERSION);
1402 case MDS_GETATTR_NAME:
1409 case MDS_DONE_WRITING:
1415 case MDS_QUOTACHECK:
1421 rc = lustre_msg_check_version(msg, LUSTRE_MDS_VERSION);
1423 CERROR("bad opc %u version %08x, expecting %08x\n",
1424 lustre_msg_get_opc(msg),
1425 lustre_msg_get_version(msg),
1426 LUSTRE_MDS_VERSION);
1430 case LDLM_BL_CALLBACK:
1431 case LDLM_CP_CALLBACK:
1432 rc = lustre_msg_check_version(msg, LUSTRE_DLM_VERSION);
1434 CERROR("bad opc %u version %08x, expecting %08x\n",
1435 lustre_msg_get_opc(msg),
1436 lustre_msg_get_version(msg),
1437 LUSTRE_DLM_VERSION);
1439 case OBD_LOG_CANCEL:
1440 case LLOG_ORIGIN_HANDLE_CREATE:
1441 case LLOG_ORIGIN_HANDLE_NEXT_BLOCK:
1442 case LLOG_ORIGIN_HANDLE_READ_HEADER:
1443 case LLOG_ORIGIN_HANDLE_CLOSE:
1444 case LLOG_ORIGIN_HANDLE_DESTROY:
1445 case LLOG_ORIGIN_HANDLE_PREV_BLOCK:
1447 rc = lustre_msg_check_version(msg, LUSTRE_LOG_VERSION);
1449 CERROR("bad opc %u version %08x, expecting %08x\n",
1450 lustre_msg_get_opc(msg),
1451 lustre_msg_get_version(msg),
1452 LUSTRE_LOG_VERSION);
1455 CERROR("MDS unknown opcode %d\n", lustre_msg_get_opc(msg));
1460 EXPORT_SYMBOL(mds_msg_check_version);
1462 int mds_handle(struct ptlrpc_request *req)
1464 int should_process, fail = OBD_FAIL_MDS_ALL_REPLY_NET;
1466 struct mds_obd *mds = NULL; /* quell gcc overwarning */
1467 struct obd_device *obd = NULL;
1470 OBD_FAIL_RETURN(OBD_FAIL_MDS_ALL_REQUEST_NET | OBD_FAIL_ONCE, 0);
1472 LASSERT(current->journal_info == NULL);
1474 rc = mds_msg_check_version(req->rq_reqmsg);
1476 CERROR("MDS drop mal-formed request\n");
1480 /* XXX identical to OST */
1481 if (lustre_msg_get_opc(req->rq_reqmsg) != MDS_CONNECT) {
1482 struct mds_export_data *med;
1485 if (req->rq_export == NULL) {
1486 CERROR("operation %d on unconnected MDS from %s\n",
1487 lustre_msg_get_opc(req->rq_reqmsg),
1488 libcfs_id2str(req->rq_peer));
1489 req->rq_status = -ENOTCONN;
1490 GOTO(out, rc = -ENOTCONN);
1493 med = &req->rq_export->exp_mds_data;
1494 obd = req->rq_export->exp_obd;
1495 mds = mds_req2mds(req);
1497 /* sanity check: if the xid matches, the request must
1498 * be marked as a resent or replayed */
1499 if (req->rq_xid == le64_to_cpu(med->med_mcd->mcd_last_xid) ||
1500 req->rq_xid == le64_to_cpu(med->med_mcd->mcd_last_close_xid))
1501 if (!(lustre_msg_get_flags(req->rq_reqmsg) &
1502 (MSG_RESENT | MSG_REPLAY))) {
1503 CERROR("rq_xid "LPU64" matches last_xid, "
1504 "expected RESENT flag\n",
1506 req->rq_status = -ENOTCONN;
1507 GOTO(out, rc = -EFAULT);
1509 /* else: note the opposite is not always true; a
1510 * RESENT req after a failover will usually not match
1511 * the last_xid, since it was likely never
1512 * committed. A REPLAYed request will almost never
1513 * match the last xid, however it could for a
1514 * committed, but still retained, open. */
1516 /* Check for aborted recovery. */
1517 spin_lock_bh(&obd->obd_processing_task_lock);
1518 recovering = obd->obd_recovering;
1519 spin_unlock_bh(&obd->obd_processing_task_lock);
1521 rc = mds_filter_recovery_request(req, obd,
1523 if (rc || !should_process)
1525 else if (should_process < 0) {
1526 req->rq_status = should_process;
1527 rc = ptlrpc_error(req);
1533 switch (lustre_msg_get_opc(req->rq_reqmsg)) {
1535 DEBUG_REQ(D_INODE, req, "connect");
1536 OBD_FAIL_RETURN(OBD_FAIL_MDS_CONNECT_NET, 0);
1537 rc = target_handle_connect(req);
1539 /* Now that we have an export, set mds. */
1541 * XXX nikita: these assignments are useless: mds is
1542 * never used below, and obd is only used for
1543 * MSG_LAST_REPLAY case, which never happens for
1546 obd = req->rq_export->exp_obd;
1547 mds = mds_req2mds(req);
1551 case MDS_DISCONNECT:
1552 DEBUG_REQ(D_INODE, req, "disconnect");
1553 OBD_FAIL_RETURN(OBD_FAIL_MDS_DISCONNECT_NET, 0);
1554 rc = target_handle_disconnect(req);
1555 req->rq_status = rc; /* superfluous? */
1559 DEBUG_REQ(D_INODE, req, "getstatus");
1560 OBD_FAIL_RETURN(OBD_FAIL_MDS_GETSTATUS_NET, 0);
1561 rc = mds_getstatus(req);
1565 DEBUG_REQ(D_INODE, req, "getattr");
1566 OBD_FAIL_RETURN(OBD_FAIL_MDS_GETATTR_NET, 0);
1567 rc = mds_getattr(req, REQ_REC_OFF);
1571 DEBUG_REQ(D_INODE, req, "setxattr");
1572 OBD_FAIL_RETURN(OBD_FAIL_MDS_SETXATTR_NET, 0);
1573 rc = mds_setxattr(req);
1577 DEBUG_REQ(D_INODE, req, "getxattr");
1578 OBD_FAIL_RETURN(OBD_FAIL_MDS_GETXATTR_NET, 0);
1579 rc = mds_getxattr(req);
1582 case MDS_GETATTR_NAME: {
1583 struct lustre_handle lockh = { 0 };
1584 DEBUG_REQ(D_INODE, req, "getattr_name");
1585 OBD_FAIL_RETURN(OBD_FAIL_MDS_GETATTR_NAME_NET, 0);
1587 /* If this request gets a reconstructed reply, we won't be
1588 * acquiring any new locks in mds_getattr_lock, so we don't
1591 rc = mds_getattr_lock(req, REQ_REC_OFF, MDS_INODELOCK_UPDATE,
1593 /* this non-intent call (from an ioctl) is special */
1594 req->rq_status = rc;
1595 if (rc == 0 && lustre_handle_is_used(&lockh))
1596 ldlm_lock_decref(&lockh, LCK_CR);
1600 DEBUG_REQ(D_INODE, req, "statfs");
1601 OBD_FAIL_RETURN(OBD_FAIL_MDS_STATFS_NET, 0);
1602 rc = mds_statfs(req);
1606 DEBUG_REQ(D_INODE, req, "readpage");
1607 OBD_FAIL_RETURN(OBD_FAIL_MDS_READPAGE_NET, 0);
1608 rc = mds_readpage(req, REQ_REC_OFF);
1610 if (OBD_FAIL_CHECK_ONCE(OBD_FAIL_MDS_SENDPAGE)) {
1617 __u32 *opcp = lustre_msg_buf(req->rq_reqmsg, REQ_REC_OFF,
1620 int size[4] = { sizeof(struct ptlrpc_body),
1621 sizeof(struct mds_body),
1622 mds->mds_max_mdsize,
1623 mds->mds_max_cookiesize };
1626 /* NB only peek inside req now; mds_reint() will swab it */
1628 CERROR ("Can't inspect opcode\n");
1633 if (lustre_msg_swabbed(req->rq_reqmsg))
1636 DEBUG_REQ(D_INODE, req, "reint %d (%s)", opc,
1637 (opc < sizeof(reint_names) / sizeof(reint_names[0]) ||
1638 reint_names[opc] == NULL) ? reint_names[opc] :
1641 OBD_FAIL_RETURN(OBD_FAIL_MDS_REINT_NET, 0);
1643 if (opc == REINT_UNLINK || opc == REINT_RENAME)
1645 else if (opc == REINT_OPEN)
1650 rc = lustre_pack_reply(req, bufcount, size, NULL);
1654 rc = mds_reint(req, REQ_REC_OFF, NULL);
1655 fail = OBD_FAIL_MDS_REINT_NET_REP;
1660 DEBUG_REQ(D_INODE, req, "close");
1661 OBD_FAIL_RETURN(OBD_FAIL_MDS_CLOSE_NET, 0);
1662 rc = mds_close(req, REQ_REC_OFF);
1665 case MDS_DONE_WRITING:
1666 DEBUG_REQ(D_INODE, req, "done_writing");
1667 OBD_FAIL_RETURN(OBD_FAIL_MDS_DONE_WRITING_NET, 0);
1668 rc = mds_done_writing(req, REQ_REC_OFF);
1672 DEBUG_REQ(D_INODE, req, "pin");
1673 OBD_FAIL_RETURN(OBD_FAIL_MDS_PIN_NET, 0);
1674 rc = mds_pin(req, REQ_REC_OFF);
1678 DEBUG_REQ(D_INODE, req, "sync");
1679 OBD_FAIL_RETURN(OBD_FAIL_MDS_SYNC_NET, 0);
1680 rc = mds_sync(req, REQ_REC_OFF);
1684 DEBUG_REQ(D_INODE, req, "set_info");
1685 rc = mds_set_info_rpc(req->rq_export, req);
1688 case MDS_QUOTACHECK:
1689 DEBUG_REQ(D_INODE, req, "quotacheck");
1690 OBD_FAIL_RETURN(OBD_FAIL_MDS_QUOTACHECK_NET, 0);
1691 rc = mds_handle_quotacheck(req);
1695 DEBUG_REQ(D_INODE, req, "quotactl");
1696 OBD_FAIL_RETURN(OBD_FAIL_MDS_QUOTACTL_NET, 0);
1697 rc = mds_handle_quotactl(req);
1701 DEBUG_REQ(D_INODE, req, "ping");
1702 rc = target_handle_ping(req);
1705 case OBD_LOG_CANCEL:
1706 CDEBUG(D_INODE, "log cancel\n");
1707 OBD_FAIL_RETURN(OBD_FAIL_OBD_LOG_CANCEL_NET, 0);
1708 rc = -ENOTSUPP; /* la la la */
1712 DEBUG_REQ(D_INODE, req, "enqueue");
1713 OBD_FAIL_RETURN(OBD_FAIL_LDLM_ENQUEUE, 0);
1714 rc = ldlm_handle_enqueue(req, ldlm_server_completion_ast,
1715 ldlm_server_blocking_ast, NULL);
1716 fail = OBD_FAIL_LDLM_REPLY;
1719 DEBUG_REQ(D_INODE, req, "convert");
1720 OBD_FAIL_RETURN(OBD_FAIL_LDLM_CONVERT, 0);
1721 rc = ldlm_handle_convert(req);
1723 case LDLM_BL_CALLBACK:
1724 case LDLM_CP_CALLBACK:
1725 DEBUG_REQ(D_INODE, req, "callback");
1726 CERROR("callbacks should not happen on MDS\n");
1728 OBD_FAIL_RETURN(OBD_FAIL_LDLM_BL_CALLBACK, 0);
1730 case LLOG_ORIGIN_HANDLE_CREATE:
1731 DEBUG_REQ(D_INODE, req, "llog_init");
1732 OBD_FAIL_RETURN(OBD_FAIL_OBD_LOGD_NET, 0);
1733 rc = llog_origin_handle_create(req);
1735 case LLOG_ORIGIN_HANDLE_DESTROY:
1736 DEBUG_REQ(D_INODE, req, "llog_init");
1737 OBD_FAIL_RETURN(OBD_FAIL_OBD_LOGD_NET, 0);
1738 rc = llog_origin_handle_destroy(req);
1740 case LLOG_ORIGIN_HANDLE_NEXT_BLOCK:
1741 DEBUG_REQ(D_INODE, req, "llog next block");
1742 OBD_FAIL_RETURN(OBD_FAIL_OBD_LOGD_NET, 0);
1743 rc = llog_origin_handle_next_block(req);
1745 case LLOG_ORIGIN_HANDLE_PREV_BLOCK:
1746 DEBUG_REQ(D_INODE, req, "llog prev block");
1747 OBD_FAIL_RETURN(OBD_FAIL_OBD_LOGD_NET, 0);
1748 rc = llog_origin_handle_prev_block(req);
1750 case LLOG_ORIGIN_HANDLE_READ_HEADER:
1751 DEBUG_REQ(D_INODE, req, "llog read header");
1752 OBD_FAIL_RETURN(OBD_FAIL_OBD_LOGD_NET, 0);
1753 rc = llog_origin_handle_read_header(req);
1755 case LLOG_ORIGIN_HANDLE_CLOSE:
1756 DEBUG_REQ(D_INODE, req, "llog close");
1757 OBD_FAIL_RETURN(OBD_FAIL_OBD_LOGD_NET, 0);
1758 rc = llog_origin_handle_close(req);
1761 DEBUG_REQ(D_INODE, req, "llog catinfo");
1762 OBD_FAIL_RETURN(OBD_FAIL_OBD_LOGD_NET, 0);
1763 rc = llog_catinfo(req);
1766 req->rq_status = -ENOTSUPP;
1767 rc = ptlrpc_error(req);
1771 LASSERT(current->journal_info == NULL);
1773 /* If we're DISCONNECTing, the mds_export_data is already freed */
1774 if (!rc && lustre_msg_get_opc(req->rq_reqmsg) != MDS_DISCONNECT) {
1775 struct mds_export_data *med = &req->rq_export->exp_mds_data;
1777 /* I don't think last_xid is used for anyway, so I'm not sure
1778 if we need to care about last_close_xid here.*/
1779 lustre_msg_set_last_xid(req->rq_repmsg,
1780 le64_to_cpu(med->med_mcd->mcd_last_xid));
1782 target_committed_to_req(req);
1788 target_send_reply(req, rc, fail);
1792 /* Update the server data on disk. This stores the new mount_count and
1793 * also the last_rcvd value to disk. If we don't have a clean shutdown,
1794 * then the server last_rcvd value may be less than that of the clients.
1795 * This will alert us that we may need to do client recovery.
1797 * Also assumes for mds_last_transno that we are not modifying it (no locking).
1799 int mds_update_server_data(struct obd_device *obd, int force_sync)
1801 struct mds_obd *mds = &obd->u.mds;
1802 struct lr_server_data *lsd = mds->mds_server_data;
1803 struct file *filp = mds->mds_rcvd_filp;
1804 struct lvfs_run_ctxt saved;
1809 CDEBUG(D_SUPER, "MDS mount_count is "LPU64", last_transno is "LPU64"\n",
1810 mds->mds_mount_count, mds->mds_last_transno);
1812 spin_lock(&mds->mds_transno_lock);
1813 lsd->lsd_last_transno = cpu_to_le64(mds->mds_last_transno);
1814 spin_unlock(&mds->mds_transno_lock);
1816 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
1817 rc = fsfilt_write_record(obd, filp, lsd, sizeof(*lsd), &off,force_sync);
1818 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
1820 CERROR("error writing MDS server data: rc = %d\n", rc);
1824 static void fsoptions_to_mds_flags(struct mds_obd *mds, char *options)
1834 while (*p && *p != ',')
1838 if (len == sizeof("user_xattr") - 1 &&
1839 memcmp(options, "user_xattr", len) == 0) {
1840 mds->mds_fl_user_xattr = 1;
1841 LCONSOLE_INFO("Enabling user_xattr\n");
1842 } else if (len == sizeof("nouser_xattr") - 1 &&
1843 memcmp(options, "nouser_xattr", len) == 0) {
1844 mds->mds_fl_user_xattr = 0;
1845 LCONSOLE_INFO("Disabling user_xattr\n");
1846 } else if (len == sizeof("acl") - 1 &&
1847 memcmp(options, "acl", len) == 0) {
1848 #ifdef CONFIG_FS_POSIX_ACL
1849 mds->mds_fl_acl = 1;
1850 LCONSOLE_INFO("Enabling ACL\n");
1852 CWARN("ignoring unsupported acl mount option\n");
1854 } else if (len == sizeof("noacl") - 1 &&
1855 memcmp(options, "noacl", len) == 0) {
1856 #ifdef CONFIG_FS_POSIX_ACL
1857 mds->mds_fl_acl = 0;
1858 LCONSOLE_INFO("Disabling ACL\n");
1865 static int mds_lov_presetup (struct mds_obd *mds, struct lustre_cfg *lcfg)
1870 rc = llog_start_commit_thread();
1874 if (lcfg->lcfg_bufcount >= 4 && LUSTRE_CFG_BUFLEN(lcfg, 3) > 0) {
1877 ll_generate_random_uuid(uuid);
1878 class_uuid_unparse(uuid, &mds->mds_lov_uuid);
1880 OBD_ALLOC(mds->mds_profile, LUSTRE_CFG_BUFLEN(lcfg, 3));
1881 if (mds->mds_profile == NULL)
1884 strncpy(mds->mds_profile, lustre_cfg_string(lcfg, 3),
1885 LUSTRE_CFG_BUFLEN(lcfg, 3));
1890 /* mount the file system (secretly). lustre_cfg parameters are:
1896 static int mds_setup(struct obd_device *obd, struct lustre_cfg* lcfg)
1898 struct lprocfs_static_vars lvars;
1899 struct mds_obd *mds = &obd->u.mds;
1900 struct lustre_mount_info *lmi;
1901 struct vfsmount *mnt;
1902 struct lustre_sb_info *lsi;
1903 struct obd_uuid uuid;
1910 /* setup 1:/dev/loop/0 2:ext3 3:mdsA 4:errors=remount-ro,iopen_nopriv */
1912 CLASSERT(offsetof(struct obd_device, u.obt) ==
1913 offsetof(struct obd_device, u.mds.mds_obt));
1915 if (lcfg->lcfg_bufcount < 3)
1918 if (LUSTRE_CFG_BUFLEN(lcfg, 1) == 0 || LUSTRE_CFG_BUFLEN(lcfg, 2) == 0)
1921 lmi = server_get_mount(obd->obd_name);
1923 CERROR("Not mounted in lustre_fill_super?\n");
1927 /* We mounted in lustre_fill_super.
1928 lcfg bufs 1, 2, 4 (device, fstype, mount opts) are ignored.*/
1930 lsi = s2lsi(lmi->lmi_sb);
1931 fsoptions_to_mds_flags(mds, lsi->lsi_ldd->ldd_mount_opts);
1932 fsoptions_to_mds_flags(mds, lsi->lsi_lmd->lmd_opts);
1934 obd->obd_fsops = fsfilt_get_ops(MT_STR(lsi->lsi_ldd));
1935 if (IS_ERR(obd->obd_fsops))
1936 GOTO(err_put, rc = PTR_ERR(obd->obd_fsops));
1938 CDEBUG(D_SUPER, "%s: mnt = %p\n", lustre_cfg_string(lcfg, 1), mnt);
1940 LASSERT(!lvfs_check_rdonly(lvfs_sbdev(mnt->mnt_sb)));
1942 sema_init(&mds->mds_epoch_sem, 1);
1943 spin_lock_init(&mds->mds_transno_lock);
1944 mds->mds_max_mdsize = sizeof(struct lov_mds_md);
1945 mds->mds_max_cookiesize = sizeof(struct llog_cookie);
1946 mds->mds_atime_diff = MAX_ATIME_DIFF;
1947 mds->mds_evict_ost_nids = 1;
1949 sprintf(ns_name, "mds-%s", obd->obd_uuid.uuid);
1950 obd->obd_namespace = ldlm_namespace_new(ns_name, LDLM_NAMESPACE_SERVER,
1951 LDLM_NAMESPACE_GREEDY);
1952 if (obd->obd_namespace == NULL) {
1954 GOTO(err_ops, rc = -ENOMEM);
1956 ldlm_register_intent(obd->obd_namespace, mds_intent_policy);
1958 lprocfs_init_vars(mds, &lvars);
1959 if (lprocfs_obd_setup(obd, lvars.obd_vars) == 0 &&
1960 lprocfs_alloc_obd_stats(obd, LPROC_MDS_LAST) == 0) {
1961 /* Init private stats here */
1962 mds_stats_counter_init(obd->obd_stats);
1963 obd->obd_proc_exports = proc_mkdir("exports",
1964 obd->obd_proc_entry);
1967 rc = mds_fs_setup(obd, mnt);
1969 CERROR("%s: MDS filesystem method init failed: rc = %d\n",
1974 rc = mds_lov_presetup(mds, lcfg);
1978 ptlrpc_init_client(LDLM_CB_REQUEST_PORTAL, LDLM_CB_REPLY_PORTAL,
1979 "mds_ldlm_client", &obd->obd_ldlm_client);
1980 obd->obd_replayable = 1;
1982 rc = lquota_setup(mds_quota_interface_ref, obd);
1987 mds->mds_group_hash = upcall_cache_init(obd->obd_name);
1988 if (IS_ERR(mds->mds_group_hash)) {
1989 rc = PTR_ERR(mds->mds_group_hash);
1990 mds->mds_group_hash = NULL;
1991 GOTO(err_qctxt, rc);
1995 /* Don't wait for mds_postrecov trying to clear orphans */
1996 obd->obd_async_recov = 1;
1997 rc = mds_postsetup(obd);
1998 /* Bug 11557 - allow async abort_recov start
1999 FIXME can remove most of this obd_async_recov plumbing
2000 obd->obd_async_recov = 0;
2003 GOTO(err_qctxt, rc);
2005 uuid_ptr = fsfilt_uuid(obd, obd->u.obt.obt_sb);
2006 if (uuid_ptr != NULL) {
2007 class_uuid_unparse(uuid_ptr, &uuid);
2013 label = fsfilt_get_label(obd, obd->u.obt.obt_sb);
2014 if (obd->obd_recovering) {
2015 LCONSOLE_WARN("MDT %s now serving %s (%s%s%s), but will be in "
2016 "recovery until %d %s reconnect, or if no clients"
2017 " reconnect for %d:%.02d; during that time new "
2018 "clients will not be allowed to connect. "
2019 "Recovery progress can be monitored by watching "
2020 "/proc/fs/lustre/mds/%s/recovery_status.\n",
2021 obd->obd_name, lustre_cfg_string(lcfg, 1),
2022 label ?: "", label ? "/" : "", str,
2023 obd->obd_max_recoverable_clients,
2024 (obd->obd_max_recoverable_clients == 1) ?
2025 "client" : "clients",
2026 (int)(OBD_RECOVERY_TIMEOUT) / 60,
2027 (int)(OBD_RECOVERY_TIMEOUT) % 60,
2030 LCONSOLE_INFO("MDT %s now serving %s (%s%s%s) with recovery "
2031 "%s\n", obd->obd_name, lustre_cfg_string(lcfg, 1),
2032 label ?: "", label ? "/" : "", str,
2033 obd->obd_replayable ? "enabled" : "disabled");
2036 if (ldlm_timeout == LDLM_TIMEOUT_DEFAULT)
2042 lquota_cleanup(mds_quota_interface_ref, obd);
2044 /* No extra cleanup needed for llog_init_commit_thread() */
2045 mds_fs_cleanup(obd);
2047 upcall_cache_cleanup(mds->mds_group_hash);
2048 mds->mds_group_hash = NULL;
2051 lprocfs_obd_cleanup(obd);
2052 lprocfs_free_obd_stats(obd);
2053 ldlm_namespace_free(obd->obd_namespace, 0);
2054 obd->obd_namespace = NULL;
2056 fsfilt_put_ops(obd->obd_fsops);
2058 server_put_mount(obd->obd_name, mnt);
2059 obd->u.obt.obt_sb = NULL;
2063 static int mds_lov_clean(struct obd_device *obd)
2065 struct mds_obd *mds = &obd->u.mds;
2066 struct obd_device *osc = mds->mds_osc_obd;
2069 if (mds->mds_profile) {
2070 class_del_profile(mds->mds_profile);
2071 OBD_FREE(mds->mds_profile, strlen(mds->mds_profile) + 1);
2072 mds->mds_profile = NULL;
2075 /* There better be a lov */
2079 RETURN(PTR_ERR(osc));
2081 obd_register_observer(osc, NULL);
2083 /* Give lov our same shutdown flags */
2084 osc->obd_force = obd->obd_force;
2085 osc->obd_fail = obd->obd_fail;
2087 /* Cleanup the lov */
2088 obd_disconnect(mds->mds_osc_exp);
2089 class_manual_cleanup(osc);
2090 mds->mds_osc_exp = NULL;
2095 static int mds_postsetup(struct obd_device *obd)
2097 struct mds_obd *mds = &obd->u.mds;
2101 rc = llog_setup(obd, NULL, LLOG_CONFIG_ORIG_CTXT, obd, 0, NULL,
2106 rc = llog_setup(obd, NULL, LLOG_LOVEA_ORIG_CTXT, obd, 0, NULL,
2111 if (mds->mds_profile) {
2112 struct lustre_profile *lprof;
2113 /* The profile defines which osc and mdc to connect to, for a
2114 client. We reuse that here to figure out the name of the
2115 lov to use (and ignore lprof->lp_md).
2116 The profile was set in the config log with
2117 LCFG_MOUNTOPT profilenm oscnm mdcnm */
2118 lprof = class_get_profile(mds->mds_profile);
2119 if (lprof == NULL) {
2120 CERROR("No profile found: %s\n", mds->mds_profile);
2121 GOTO(err_cleanup, rc = -ENOENT);
2123 rc = mds_lov_connect(obd, lprof->lp_dt);
2125 GOTO(err_cleanup, rc);
2132 llog_cleanup(llog_get_context(obd, LLOG_CONFIG_ORIG_CTXT));
2133 llog_cleanup(llog_get_context(obd, LLOG_LOVEA_ORIG_CTXT));
2137 int mds_postrecov(struct obd_device *obd)
2145 LASSERT(!obd->obd_recovering);
2146 LASSERT(llog_get_context(obd, LLOG_MDS_OST_ORIG_CTXT) != NULL);
2148 /* FIXME why not put this in the synchronize? */
2149 /* set nextid first, so we are sure it happens */
2150 rc = mds_lov_set_nextid(obd);
2152 CERROR("%s: mds_lov_set_nextid failed %d\n",
2157 /* clean PENDING dir */
2158 if (strncmp(obd->obd_name, MDD_OBD_NAME, strlen(MDD_OBD_NAME)))
2159 rc = mds_cleanup_pending(obd);
2163 /* FIXME Does target_finish_recovery really need this to block? */
2164 /* Notify the LOV, which will in turn call mds_notify for each tgt */
2165 /* This means that we have to hack obd_notify to think we're obd_set_up
2166 during mds_lov_connect. */
2167 obd_notify(obd->u.mds.mds_osc_obd, NULL,
2168 obd->obd_async_recov ? OBD_NOTIFY_SYNC_NONBLOCK :
2169 OBD_NOTIFY_SYNC, NULL);
2171 /* quota recovery */
2172 lquota_recovery(mds_quota_interface_ref, obd);
2178 /* We need to be able to stop an mds_lov_synchronize */
2179 static int mds_lov_early_clean(struct obd_device *obd)
2181 struct mds_obd *mds = &obd->u.mds;
2182 struct obd_device *osc = mds->mds_osc_obd;
2184 if (!osc || (!obd->obd_force && !obd->obd_fail))
2187 CDEBUG(D_HA, "abort inflight\n");
2188 return (obd_precleanup(osc, OBD_CLEANUP_EARLY));
2191 static int mds_precleanup(struct obd_device *obd, enum obd_cleanup_stage stage)
2197 case OBD_CLEANUP_EARLY:
2199 case OBD_CLEANUP_EXPORTS:
2200 /*XXX Use this for mdd mds cleanup, so comment out
2201 *this target_cleanup_recovery for this tmp MDD MDS
2203 if (strncmp(obd->obd_name, MDD_OBD_NAME, strlen(MDD_OBD_NAME)))
2204 target_cleanup_recovery(obd);
2205 mds_lov_early_clean(obd);
2207 case OBD_CLEANUP_SELF_EXP:
2208 mds_lov_disconnect(obd);
2210 llog_cleanup(llog_get_context(obd, LLOG_CONFIG_ORIG_CTXT));
2211 llog_cleanup(llog_get_context(obd, LLOG_LOVEA_ORIG_CTXT));
2212 rc = obd_llog_finish(obd, 0);
2214 case OBD_CLEANUP_OBD:
2220 static int mds_cleanup(struct obd_device *obd)
2222 struct mds_obd *mds = &obd->u.mds;
2223 lvfs_sbdev_type save_dev;
2226 if (obd->u.obt.obt_sb == NULL)
2228 save_dev = lvfs_sbdev(obd->u.obt.obt_sb);
2230 if (mds->mds_osc_exp)
2231 /* lov export was disconnected by mds_lov_clean;
2232 we just need to drop our ref */
2233 class_export_put(mds->mds_osc_exp);
2235 lprocfs_obd_cleanup(obd);
2236 lprocfs_free_obd_stats(obd);
2238 lquota_cleanup(mds_quota_interface_ref, obd);
2240 mds_update_server_data(obd, 1);
2241 if (mds->mds_lov_objids != NULL)
2242 OBD_FREE(mds->mds_lov_objids, mds_lov_objids_size(mds));
2243 mds_fs_cleanup(obd);
2246 upcall_cache_cleanup(mds->mds_group_hash);
2247 mds->mds_group_hash = NULL;
2250 server_put_mount(obd->obd_name, mds->mds_vfsmnt);
2251 obd->u.obt.obt_sb = NULL;
2253 ldlm_namespace_free(obd->obd_namespace, obd->obd_force);
2255 spin_lock_bh(&obd->obd_processing_task_lock);
2256 if (obd->obd_recovering) {
2257 target_cancel_recovery_timer(obd);
2258 obd->obd_recovering = 0;
2260 spin_unlock_bh(&obd->obd_processing_task_lock);
2262 fsfilt_put_ops(obd->obd_fsops);
2264 LCONSOLE_INFO("MDT %s has stopped.\n", obd->obd_name);
2269 static void fixup_handle_for_resent_req(struct ptlrpc_request *req, int offset,
2270 struct ldlm_lock *new_lock,
2271 struct ldlm_lock **old_lock,
2272 struct lustre_handle *lockh)
2274 struct obd_export *exp = req->rq_export;
2275 struct ldlm_request *dlmreq =
2276 lustre_msg_buf(req->rq_reqmsg, offset, sizeof(*dlmreq));
2277 struct lustre_handle remote_hdl = dlmreq->lock_handle[0];
2278 struct list_head *iter;
2280 if (!(lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT))
2283 spin_lock(&exp->exp_ldlm_data.led_lock);
2284 list_for_each(iter, &exp->exp_ldlm_data.led_held_locks) {
2285 struct ldlm_lock *lock;
2286 lock = list_entry(iter, struct ldlm_lock, l_export_chain);
2287 if (lock == new_lock)
2289 if (lock->l_remote_handle.cookie == remote_hdl.cookie) {
2290 lockh->cookie = lock->l_handle.h_cookie;
2291 LDLM_DEBUG(lock, "restoring lock cookie");
2292 DEBUG_REQ(D_HA, req, "restoring lock cookie "LPX64,
2295 *old_lock = LDLM_LOCK_GET(lock);
2296 spin_unlock(&exp->exp_ldlm_data.led_lock);
2300 spin_unlock(&exp->exp_ldlm_data.led_lock);
2302 /* If the xid matches, then we know this is a resent request,
2303 * and allow it. (It's probably an OPEN, for which we don't
2306 le64_to_cpu(exp->exp_mds_data.med_mcd->mcd_last_xid))
2310 le64_to_cpu(exp->exp_mds_data.med_mcd->mcd_last_close_xid))
2313 /* This remote handle isn't enqueued, so we never received or
2314 * processed this request. Clear MSG_RESENT, because it can
2315 * be handled like any normal request now. */
2317 lustre_msg_clear_flags(req->rq_reqmsg, MSG_RESENT);
2319 DEBUG_REQ(D_HA, req, "no existing lock with rhandle "LPX64,
2323 int intent_disposition(struct ldlm_reply *rep, int flag)
2327 return (rep->lock_policy_res1 & flag);
2330 void intent_set_disposition(struct ldlm_reply *rep, int flag)
2334 rep->lock_policy_res1 |= flag;
2337 static int mds_intent_policy(struct ldlm_namespace *ns,
2338 struct ldlm_lock **lockp, void *req_cookie,
2339 ldlm_mode_t mode, int flags, void *data)
2341 struct ptlrpc_request *req = req_cookie;
2342 struct ldlm_lock *lock = *lockp;
2343 struct ldlm_intent *it;
2344 struct mds_obd *mds = &req->rq_export->exp_obd->u.mds;
2345 struct ldlm_reply *rep;
2346 struct lustre_handle lockh = { 0 };
2347 struct ldlm_lock *new_lock = NULL;
2348 int getattr_part = MDS_INODELOCK_UPDATE;
2349 int repsize[5] = { [MSG_PTLRPC_BODY_OFF] = sizeof(struct ptlrpc_body),
2350 [DLM_LOCKREPLY_OFF] = sizeof(struct ldlm_reply),
2351 [DLM_REPLY_REC_OFF] = sizeof(struct mds_body),
2352 [DLM_REPLY_REC_OFF+1] = mds->mds_max_mdsize };
2353 int repbufcnt = 4, rc;
2356 LASSERT(req != NULL);
2358 if (lustre_msg_bufcount(req->rq_reqmsg) <= DLM_INTENT_IT_OFF) {
2359 /* No intent was provided */
2360 rc = lustre_pack_reply(req, 2, repsize, NULL);
2365 it = lustre_swab_reqbuf(req, DLM_INTENT_IT_OFF, sizeof(*it),
2366 lustre_swab_ldlm_intent);
2368 CERROR("Intent missing\n");
2369 RETURN(req->rq_status = -EFAULT);
2372 LDLM_DEBUG(lock, "intent policy, opc: %s", ldlm_it2str(it->opc));
2374 if ((req->rq_export->exp_connect_flags & OBD_CONNECT_ACL) &&
2375 (it->opc & (IT_OPEN | IT_GETATTR | IT_LOOKUP)))
2376 /* we should never allow OBD_CONNECT_ACL if not configured */
2377 repsize[repbufcnt++] = LUSTRE_POSIX_ACL_MAX_SIZE;
2378 else if (it->opc & IT_UNLINK)
2379 repsize[repbufcnt++] = mds->mds_max_cookiesize;
2381 rc = lustre_pack_reply(req, repbufcnt, repsize, NULL);
2383 RETURN(req->rq_status = rc);
2385 rep = lustre_msg_buf(req->rq_repmsg, DLM_LOCKREPLY_OFF, sizeof(*rep));
2386 intent_set_disposition(rep, DISP_IT_EXECD);
2389 /* execute policy */
2390 switch ((long)it->opc) {
2392 case IT_CREAT|IT_OPEN:
2393 mds_counter_incr(req->rq_export, LPROC_MDS_OPEN);
2394 fixup_handle_for_resent_req(req, DLM_LOCKREQ_OFF, lock, NULL,
2396 /* XXX swab here to assert that an mds_open reint
2397 * packet is following */
2398 rep->lock_policy_res2 = mds_reint(req, DLM_INTENT_REC_OFF,
2401 /* We abort the lock if the lookup was negative and
2402 * we did not make it to the OPEN portion */
2403 if (!intent_disposition(rep, DISP_LOOKUP_EXECD))
2404 RETURN(ELDLM_LOCK_ABORTED);
2405 if (intent_disposition(rep, DISP_LOOKUP_NEG) &&
2406 !intent_disposition(rep, DISP_OPEN_OPEN))
2409 /* If there was an error of some sort or if we are not
2410 * returning any locks */
2411 if (rep->lock_policy_res2 ||
2412 !intent_disposition(rep, DISP_OPEN_LOCK))
2413 RETURN(ELDLM_LOCK_ABORTED);
2416 getattr_part = MDS_INODELOCK_LOOKUP;
2418 getattr_part |= MDS_INODELOCK_LOOKUP;
2419 OBD_COUNTER_INCREMENT(req->rq_export->exp_obd, getattr);
2421 fixup_handle_for_resent_req(req, DLM_LOCKREQ_OFF, lock,
2424 /* INODEBITS_INTEROP: if this lock was converted from a
2425 * plain lock (client does not support inodebits), then
2426 * child lock must be taken with both lookup and update
2427 * bits set for all operations.
2429 if (!(req->rq_export->exp_connect_flags & OBD_CONNECT_IBITS))
2430 getattr_part = MDS_INODELOCK_LOOKUP |
2431 MDS_INODELOCK_UPDATE;
2433 rep->lock_policy_res2 = mds_getattr_lock(req,DLM_INTENT_REC_OFF,
2434 getattr_part, &lockh);
2435 /* FIXME: LDLM can set req->rq_status. MDS sets
2436 policy_res{1,2} with disposition and status.
2437 - replay: returns 0 & req->status is old status
2438 - otherwise: returns req->status */
2439 if (intent_disposition(rep, DISP_LOOKUP_NEG))
2440 rep->lock_policy_res2 = 0;
2441 if (!intent_disposition(rep, DISP_LOOKUP_POS) ||
2442 rep->lock_policy_res2)
2443 RETURN(ELDLM_LOCK_ABORTED);
2444 if (req->rq_status != 0) {
2446 rep->lock_policy_res2 = req->rq_status;
2447 RETURN(ELDLM_LOCK_ABORTED);
2451 CERROR("Unhandled intent "LPD64"\n", it->opc);
2455 /* By this point, whatever function we called above must have either
2456 * filled in 'lockh', been an intent replay, or returned an error. We
2457 * want to allow replayed RPCs to not get a lock, since we would just
2458 * drop it below anyways because lock replay is done separately by the
2459 * client afterwards. For regular RPCs we want to give the new lock to
2460 * the client instead of whatever lock it was about to get. */
2461 if (new_lock == NULL)
2462 new_lock = ldlm_handle2lock(&lockh);
2463 if (new_lock == NULL && (flags & LDLM_FL_INTENT_ONLY))
2466 LASSERTF(new_lock != NULL, "op "LPX64" lockh "LPX64"\n",
2467 it->opc, lockh.cookie);
2469 /* If we've already given this lock to a client once, then we should
2470 * have no readers or writers. Otherwise, we should have one reader
2471 * _or_ writer ref (which will be zeroed below) before returning the
2472 * lock to a client. */
2473 if (new_lock->l_export == req->rq_export) {
2474 LASSERT(new_lock->l_readers + new_lock->l_writers == 0);
2476 LASSERT(new_lock->l_export == NULL);
2477 LASSERT(new_lock->l_readers + new_lock->l_writers == 1);
2482 if (new_lock->l_export == req->rq_export) {
2483 /* Already gave this to the client, which means that we
2484 * reconstructed a reply. */
2485 LASSERT(lustre_msg_get_flags(req->rq_reqmsg) &
2487 RETURN(ELDLM_LOCK_REPLACED);
2490 /* Fixup the lock to be given to the client */
2491 lock_res_and_lock(new_lock);
2492 new_lock->l_readers = 0;
2493 new_lock->l_writers = 0;
2495 new_lock->l_export = class_export_get(req->rq_export);
2496 spin_lock(&req->rq_export->exp_ldlm_data.led_lock);
2497 list_add(&new_lock->l_export_chain,
2498 &new_lock->l_export->exp_ldlm_data.led_held_locks);
2499 spin_unlock(&req->rq_export->exp_ldlm_data.led_lock);
2501 new_lock->l_blocking_ast = lock->l_blocking_ast;
2502 new_lock->l_completion_ast = lock->l_completion_ast;
2504 memcpy(&new_lock->l_remote_handle, &lock->l_remote_handle,
2505 sizeof(lock->l_remote_handle));
2507 new_lock->l_flags &= ~LDLM_FL_LOCAL;
2509 unlock_res_and_lock(new_lock);
2510 LDLM_LOCK_PUT(new_lock);
2512 RETURN(ELDLM_LOCK_REPLACED);
2515 static int mdt_setup(struct obd_device *obd, struct lustre_cfg *lcfg)
2517 struct mds_obd *mds = &obd->u.mds;
2518 struct lprocfs_static_vars lvars;
2519 int mds_min_threads;
2520 int mds_max_threads;
2524 lprocfs_init_vars(mdt, &lvars);
2525 lprocfs_obd_setup(obd, lvars.obd_vars);
2527 sema_init(&mds->mds_health_sem, 1);
2529 if (mds_num_threads) {
2530 /* If mds_num_threads is set, it is the min and the max. */
2531 if (mds_num_threads > MDS_THREADS_MAX)
2532 mds_num_threads = MDS_THREADS_MAX;
2533 if (mds_num_threads < MDS_THREADS_MIN)
2534 mds_num_threads = MDS_THREADS_MIN;
2535 mds_max_threads = mds_min_threads = mds_num_threads;
2537 /* Base min threads on memory and cpus */
2538 mds_min_threads = num_possible_cpus() * num_physpages >>
2539 (27 - CFS_PAGE_SHIFT);
2540 if (mds_min_threads < MDS_THREADS_MIN)
2541 mds_min_threads = MDS_THREADS_MIN;
2542 /* Largest auto threads start value */
2543 if (mds_min_threads > 32)
2544 mds_min_threads = 32;
2545 mds_max_threads = min(MDS_THREADS_MAX, mds_min_threads * 4);
2549 ptlrpc_init_svc(MDS_NBUFS, MDS_BUFSIZE, MDS_MAXREQSIZE,
2550 MDS_MAXREPSIZE, MDS_REQUEST_PORTAL,
2551 MDC_REPLY_PORTAL, MDS_SERVICE_WATCHDOG_TIMEOUT,
2552 mds_handle, LUSTRE_MDS_NAME,
2553 obd->obd_proc_entry, NULL,
2554 mds_min_threads, mds_max_threads, "ll_mdt", 0);
2556 if (!mds->mds_service) {
2557 CERROR("failed to start service\n");
2558 GOTO(err_lprocfs, rc = -ENOMEM);
2561 rc = ptlrpc_start_threads(obd, mds->mds_service);
2563 GOTO(err_thread, rc);
2565 mds->mds_setattr_service =
2566 ptlrpc_init_svc(MDS_NBUFS, MDS_BUFSIZE, MDS_MAXREQSIZE,
2567 MDS_MAXREPSIZE, MDS_SETATTR_PORTAL,
2568 MDC_REPLY_PORTAL, MDS_SERVICE_WATCHDOG_TIMEOUT,
2569 mds_handle, "mds_setattr",
2570 obd->obd_proc_entry, NULL,
2571 mds_min_threads, mds_max_threads,
2573 if (!mds->mds_setattr_service) {
2574 CERROR("failed to start getattr service\n");
2575 GOTO(err_thread, rc = -ENOMEM);
2578 rc = ptlrpc_start_threads(obd, mds->mds_setattr_service);
2580 GOTO(err_thread2, rc);
2582 mds->mds_readpage_service =
2583 ptlrpc_init_svc(MDS_NBUFS, MDS_BUFSIZE, MDS_MAXREQSIZE,
2584 MDS_MAXREPSIZE, MDS_READPAGE_PORTAL,
2585 MDC_REPLY_PORTAL, MDS_SERVICE_WATCHDOG_TIMEOUT,
2586 mds_handle, "mds_readpage",
2587 obd->obd_proc_entry, NULL,
2588 MDS_THREADS_MIN_READPAGE, mds_max_threads,
2590 if (!mds->mds_readpage_service) {
2591 CERROR("failed to start readpage service\n");
2592 GOTO(err_thread2, rc = -ENOMEM);
2595 rc = ptlrpc_start_threads(obd, mds->mds_readpage_service);
2598 GOTO(err_thread3, rc);
2600 ping_evictor_start();
2605 ptlrpc_unregister_service(mds->mds_readpage_service);
2606 mds->mds_readpage_service = NULL;
2608 ptlrpc_unregister_service(mds->mds_setattr_service);
2609 mds->mds_setattr_service = NULL;
2611 ptlrpc_unregister_service(mds->mds_service);
2612 mds->mds_service = NULL;
2614 lprocfs_obd_cleanup(obd);
2618 static int mdt_cleanup(struct obd_device *obd)
2620 struct mds_obd *mds = &obd->u.mds;
2623 ping_evictor_stop();
2625 down(&mds->mds_health_sem);
2626 ptlrpc_unregister_service(mds->mds_readpage_service);
2627 ptlrpc_unregister_service(mds->mds_setattr_service);
2628 ptlrpc_unregister_service(mds->mds_service);
2629 mds->mds_readpage_service = NULL;
2630 mds->mds_setattr_service = NULL;
2631 mds->mds_service = NULL;
2632 up(&mds->mds_health_sem);
2634 lprocfs_obd_cleanup(obd);
2639 static int mdt_health_check(struct obd_device *obd)
2641 struct mds_obd *mds = &obd->u.mds;
2644 down(&mds->mds_health_sem);
2645 rc |= ptlrpc_service_health_check(mds->mds_readpage_service);
2646 rc |= ptlrpc_service_health_check(mds->mds_setattr_service);
2647 rc |= ptlrpc_service_health_check(mds->mds_service);
2648 up(&mds->mds_health_sem);
2651 * health_check to return 0 on healthy
2652 * and 1 on unhealthy.
2660 static struct dentry *mds_lvfs_fid2dentry(__u64 id, __u32 gen, __u64 gr,
2663 struct obd_device *obd = data;
2666 fid.generation = gen;
2667 return mds_fid2dentry(&obd->u.mds, &fid, NULL);
2670 static int mds_health_check(struct obd_device *obd)
2672 struct obd_device_target *odt = &obd->u.obt;
2673 #ifdef USE_HEALTH_CHECK_WRITE
2674 struct mds_obd *mds = &obd->u.mds;
2678 if (odt->obt_sb->s_flags & MS_RDONLY)
2681 #ifdef USE_HEALTH_CHECK_WRITE
2682 LASSERT(mds->mds_health_check_filp != NULL);
2683 rc |= !!lvfs_check_io_health(obd, mds->mds_health_check_filp);
2688 static int mds_process_config(struct obd_device *obd, obd_count len, void *buf)
2690 struct lustre_cfg *lcfg = buf;
2691 struct lprocfs_static_vars lvars;
2694 lprocfs_init_vars(mds, &lvars);
2696 rc = class_process_proc_param(PARAM_MDT, lvars.obd_vars, lcfg, obd);
2700 struct lvfs_callback_ops mds_lvfs_ops = {
2701 l_fid2dentry: mds_lvfs_fid2dentry,
2704 /* use obd ops to offer management infrastructure */
2705 static struct obd_ops mds_obd_ops = {
2706 .o_owner = THIS_MODULE,
2707 .o_connect = mds_connect,
2708 .o_reconnect = mds_reconnect,
2709 .o_init_export = mds_init_export,
2710 .o_destroy_export = mds_destroy_export,
2711 .o_disconnect = mds_disconnect,
2712 .o_setup = mds_setup,
2713 .o_precleanup = mds_precleanup,
2714 .o_cleanup = mds_cleanup,
2715 .o_postrecov = mds_postrecov,
2716 .o_statfs = mds_obd_statfs,
2717 .o_iocontrol = mds_iocontrol,
2718 .o_create = mds_obd_create,
2719 .o_destroy = mds_obd_destroy,
2720 .o_llog_init = mds_llog_init,
2721 .o_llog_finish = mds_llog_finish,
2722 .o_notify = mds_notify,
2723 .o_health_check = mds_health_check,
2724 .o_process_config = mds_process_config,
2727 static struct obd_ops mdt_obd_ops = {
2728 .o_owner = THIS_MODULE,
2729 .o_setup = mdt_setup,
2730 .o_cleanup = mdt_cleanup,
2731 .o_health_check = mdt_health_check,
2734 quota_interface_t *mds_quota_interface_ref;
2735 extern quota_interface_t mds_quota_interface;
2737 static __attribute__((unused)) int __init mds_init(void)
2740 struct lprocfs_static_vars lvars;
2742 request_module("lquota");
2743 mds_quota_interface_ref = PORTAL_SYMBOL_GET(mds_quota_interface);
2744 rc = lquota_init(mds_quota_interface_ref);
2746 if (mds_quota_interface_ref)
2747 PORTAL_SYMBOL_PUT(mds_quota_interface);
2750 init_obd_quota_ops(mds_quota_interface_ref, &mds_obd_ops);
2752 lprocfs_init_vars(mds, &lvars);
2753 class_register_type(&mds_obd_ops, NULL,
2754 lvars.module_vars, LUSTRE_MDS_NAME, NULL);
2755 lprocfs_init_vars(mdt, &lvars);
2756 mdt_obd_ops = mdt_obd_ops; //make compiler happy
2757 // class_register_type(&mdt_obd_ops, NULL,
2758 // lvars.module_vars, LUSTRE_MDT_NAME, NULL);
2763 static __attribute__((unused)) void /*__exit*/ mds_exit(void)
2765 lquota_exit(mds_quota_interface_ref);
2766 if (mds_quota_interface_ref)
2767 PORTAL_SYMBOL_PUT(mds_quota_interface);
2769 class_unregister_type(LUSTRE_MDS_NAME);
2770 // class_unregister_type(LUSTRE_MDT_NAME);
2772 /*mds still need lov setup here*/
2773 static int mds_cmd_setup(struct obd_device *obd, struct lustre_cfg *lcfg)
2775 struct mds_obd *mds = &obd->u.mds;
2776 struct lvfs_run_ctxt saved;
2778 struct vfsmount *mnt;
2779 struct lustre_sb_info *lsi;
2780 struct lustre_mount_info *lmi;
2781 struct dentry *dentry;
2786 CDEBUG(D_INFO, "obd %s setup \n", obd->obd_name);
2787 if (strncmp(obd->obd_name, MDD_OBD_NAME, strlen(MDD_OBD_NAME)))
2790 if (lcfg->lcfg_bufcount < 5) {
2791 CERROR("invalid arg for setup %s\n", MDD_OBD_NAME);
2794 dev = lustre_cfg_string(lcfg, 4);
2795 lmi = server_get_mount(dev);
2796 LASSERT(lmi != NULL);
2798 lsi = s2lsi(lmi->lmi_sb);
2800 /* FIXME: MDD LOV initialize objects.
2801 * we need only lmi here but not get mount
2802 * OSD did mount already, so put mount back
2804 atomic_dec(&lsi->lsi_mounts);
2807 obd->obd_fsops = fsfilt_get_ops(MT_STR(lsi->lsi_ldd));
2808 mds_init_ctxt(obd, mnt);
2810 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
2811 dentry = simple_mkdir(current->fs->pwd, "OBJECTS", 0777, 1);
2812 if (IS_ERR(dentry)) {
2813 rc = PTR_ERR(dentry);
2814 CERROR("cannot create OBJECTS directory: rc = %d\n", rc);
2815 GOTO(err_putfs, rc);
2817 mds->mds_objects_dir = dentry;
2819 dentry = lookup_one_len("__iopen__", current->fs->pwd,
2820 strlen("__iopen__"));
2821 if (IS_ERR(dentry)) {
2822 rc = PTR_ERR(dentry);
2823 CERROR("cannot lookup __iopen__ directory: rc = %d\n", rc);
2824 GOTO(err_objects, rc);
2827 mds->mds_fid_de = dentry;
2828 if (!dentry->d_inode || is_bad_inode(dentry->d_inode)) {
2830 CERROR("__iopen__ directory has no inode? rc = %d\n", rc);
2834 /* open and test the lov objd file */
2835 file = filp_open(LOV_OBJID, O_RDWR | O_CREAT, 0644);
2838 CERROR("cannot open/create %s file: rc = %d\n", LOV_OBJID, rc);
2839 GOTO(err_fid, rc = PTR_ERR(file));
2841 if (!S_ISREG(file->f_dentry->d_inode->i_mode)) {
2842 CERROR("%s is not a regular file!: mode = %o\n", LOV_OBJID,
2843 file->f_dentry->d_inode->i_mode);
2844 GOTO(err_lov_objid, rc = -ENOENT);
2846 init_rwsem(&mds->mds_lov_objids_sem);
2847 spin_lock_init(&mds->mds_lov_objids_lock);
2848 cfs_waitq_init(&mds->mds_lov_objids_wait);
2849 mds->mds_lov_objid_filp = file;
2851 rc = mds_lov_presetup(mds, lcfg);
2853 GOTO(err_objects, rc);
2855 /* Don't wait for mds_postrecov trying to clear orphans */
2856 obd->obd_async_recov = 1;
2857 rc = mds_postsetup(obd);
2858 /* Bug 11557 - allow async abort_recov start
2859 FIXME can remove most of this obd_async_recov plumbing
2860 obd->obd_async_recov = 0;
2864 GOTO(err_objects, rc);
2866 mds->mds_max_mdsize = sizeof(struct lov_mds_md);
2867 mds->mds_max_cookiesize = sizeof(struct llog_cookie);
2870 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
2873 if (mds->mds_lov_objid_filp &&
2874 filp_close((struct file *)mds->mds_lov_objid_filp, 0))
2875 CERROR("can't close %s after error\n", LOV_OBJID);
2877 dput(mds->mds_fid_de);
2879 dput(mds->mds_objects_dir);
2881 fsfilt_put_ops(obd->obd_fsops);
2885 static int mds_cmd_cleanup(struct obd_device *obd)
2887 struct mds_obd *mds = &obd->u.mds;
2888 struct lvfs_run_ctxt saved;
2893 LCONSOLE_WARN("%s: shutting down for failover; client state "
2894 "will be preserved.\n", obd->obd_name);
2896 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
2897 if (mds->mds_lov_objid_filp) {
2898 rc = filp_close((struct file *)mds->mds_lov_objid_filp, 0);
2899 mds->mds_lov_objid_filp = NULL;
2901 CERROR("%s file won't close, rc=%d\n", LOV_OBJID, rc);
2903 if (mds->mds_objects_dir != NULL) {
2904 l_dput(mds->mds_objects_dir);
2905 mds->mds_objects_dir = NULL;
2908 if (mds->mds_lov_objids != NULL)
2909 OBD_FREE(mds->mds_lov_objids, mds_lov_objids_size(mds));
2911 shrink_dcache_parent(mds->mds_fid_de);
2912 dput(mds->mds_fid_de);
2913 LL_DQUOT_OFF(obd->u.obt.obt_sb);
2914 fsfilt_put_ops(obd->obd_fsops);
2916 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
2921 static int mds_cmd_health_check(struct obd_device *obd)
2926 static struct obd_ops mds_cmd_obd_ops = {
2927 .o_owner = THIS_MODULE,
2928 .o_setup = mds_cmd_setup,
2929 .o_cleanup = mds_cmd_cleanup,
2930 .o_precleanup = mds_precleanup,
2931 .o_create = mds_obd_create,
2932 .o_destroy = mds_obd_destroy,
2933 .o_llog_init = mds_llog_init,
2934 .o_llog_finish = mds_llog_finish,
2935 .o_notify = mds_notify,
2936 .o_postrecov = mds_postrecov,
2937 // .o_health_check = mds_cmd_health_check,
2940 static int __init mds_cmd_init(void)
2942 struct lprocfs_static_vars lvars;
2944 lprocfs_init_vars(mds, &lvars);
2945 class_register_type(&mds_cmd_obd_ops, NULL, lvars.module_vars,
2946 LUSTRE_MDS_NAME, NULL);
2951 static void /*__exit*/ mds_cmd_exit(void)
2953 class_unregister_type(LUSTRE_MDS_NAME);
2956 MODULE_AUTHOR("Cluster File Systems, Inc. <info@clusterfs.com>");
2957 MODULE_DESCRIPTION("Lustre Metadata Server (MDS)");
2958 MODULE_LICENSE("GPL");
2960 module_init(mds_cmd_init);
2961 module_exit(mds_cmd_exit);