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/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>
53 #include <linux/lustre_acl.h>
54 #include <obd_class.h>
55 #include <lustre_dlm.h>
57 #include <lustre_fsfilt.h>
58 #include <lprocfs_status.h>
59 #include <lustre_commit_confd.h>
60 #include <lustre_quota.h>
61 #include <lustre_disk.h>
62 #include <lustre_param.h>
64 #include "mds_internal.h"
67 CFS_MODULE_PARM(mds_num_threads, "i", int, 0444,
68 "number of MDS service threads to start");
70 static int mds_intent_policy(struct ldlm_namespace *ns,
71 struct ldlm_lock **lockp, void *req_cookie,
72 ldlm_mode_t mode, int flags, void *data);
73 static int mds_postsetup(struct obd_device *obd);
74 static int mds_cleanup(struct obd_device *obd);
76 /* Assumes caller has already pushed into the kernel filesystem context */
77 static int mds_sendpage(struct ptlrpc_request *req, struct file *file,
78 loff_t offset, int count)
80 struct ptlrpc_bulk_desc *desc;
81 struct l_wait_info lwi;
83 int rc = 0, npages, i, tmpcount, tmpsize = 0;
86 LASSERT((offset & ~CFS_PAGE_MASK) == 0); /* I'm dubious about this */
88 npages = (count + CFS_PAGE_SIZE - 1) >> CFS_PAGE_SHIFT;
89 OBD_ALLOC(pages, sizeof(*pages) * npages);
91 GOTO(out, rc = -ENOMEM);
93 desc = ptlrpc_prep_bulk_exp(req, npages, BULK_PUT_SOURCE,
96 GOTO(out_free, rc = -ENOMEM);
98 for (i = 0, tmpcount = count; i < npages; i++, tmpcount -= tmpsize) {
99 tmpsize = tmpcount > CFS_PAGE_SIZE ? CFS_PAGE_SIZE : tmpcount;
101 pages[i] = cfs_alloc_page(CFS_ALLOC_STD);
102 if (pages[i] == NULL)
103 GOTO(cleanup_buf, rc = -ENOMEM);
105 ptlrpc_prep_bulk_page(desc, pages[i], 0, tmpsize);
108 for (i = 0, tmpcount = count; i < npages; i++, tmpcount -= tmpsize) {
109 tmpsize = tmpcount > CFS_PAGE_SIZE ? CFS_PAGE_SIZE : tmpcount;
110 CDEBUG(D_EXT2, "reading %u@%llu from dir %lu (size %llu)\n",
111 tmpsize, offset, file->f_dentry->d_inode->i_ino,
112 file->f_dentry->d_inode->i_size);
114 rc = fsfilt_readpage(req->rq_export->exp_obd, file,
115 kmap(pages[i]), tmpsize, &offset);
119 GOTO(cleanup_buf, rc = -EIO);
122 LASSERT(desc->bd_nob == count);
124 rc = ptlrpc_start_bulk_transfer(desc);
126 GOTO(cleanup_buf, rc);
128 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_SENDPAGE)) {
129 CERROR("obd_fail_loc=%x, fail operation rc=%d\n",
130 OBD_FAIL_MDS_SENDPAGE, rc);
131 GOTO(abort_bulk, rc);
134 lwi = LWI_TIMEOUT(obd_timeout * HZ / 4, NULL, NULL);
135 rc = l_wait_event(desc->bd_waitq, !ptlrpc_bulk_active(desc), &lwi);
136 LASSERT (rc == 0 || rc == -ETIMEDOUT);
139 if (desc->bd_success &&
140 desc->bd_nob_transferred == count)
141 GOTO(cleanup_buf, rc);
143 rc = -ETIMEDOUT; /* XXX should this be a different errno? */
146 DEBUG_REQ(D_ERROR, req, "bulk failed: %s %d(%d), evicting %s@%s",
147 (rc == -ETIMEDOUT) ? "timeout" : "network error",
148 desc->bd_nob_transferred, count,
149 req->rq_export->exp_client_uuid.uuid,
150 req->rq_export->exp_connection->c_remote_uuid.uuid);
152 class_fail_export(req->rq_export);
156 ptlrpc_abort_bulk (desc);
158 for (i = 0; i < npages; i++)
160 __cfs_free_page(pages[i]);
162 ptlrpc_free_bulk(desc);
164 OBD_FREE(pages, sizeof(*pages) * npages);
169 /* only valid locked dentries or errors should be returned */
170 struct dentry *mds_fid2locked_dentry(struct obd_device *obd, struct ll_fid *fid,
171 struct vfsmount **mnt, int lock_mode,
172 struct lustre_handle *lockh,
175 struct mds_obd *mds = &obd->u.mds;
176 struct dentry *de = mds_fid2dentry(mds, fid, mnt), *retval = de;
177 struct ldlm_res_id res_id = { .name = {0} };
178 int flags = LDLM_FL_ATOMIC_CB, rc;
179 ldlm_policy_data_t policy = { .l_inodebits = { lockpart} };
185 res_id.name[0] = de->d_inode->i_ino;
186 res_id.name[1] = de->d_inode->i_generation;
187 rc = ldlm_cli_enqueue_local(obd->obd_namespace, &res_id,
188 LDLM_IBITS, &policy, lock_mode, &flags,
189 ldlm_blocking_ast, ldlm_completion_ast,
190 NULL, NULL, 0, NULL, lockh);
191 if (rc != ELDLM_OK) {
193 retval = ERR_PTR(-EIO); /* XXX translate ldlm code */
199 /* Look up an entry by inode number. */
200 /* this function ONLY returns valid dget'd dentries with an initialized inode
202 struct dentry *mds_fid2dentry(struct mds_obd *mds, struct ll_fid *fid,
203 struct vfsmount **mnt)
206 unsigned long ino = fid->id;
207 __u32 generation = fid->generation;
209 struct dentry *result;
212 RETURN(ERR_PTR(-ESTALE));
214 snprintf(fid_name, sizeof(fid_name), "0x%lx", ino);
216 CDEBUG(D_DENTRY, "--> mds_fid2dentry: ino/gen %lu/%u, sb %p\n",
217 ino, generation, mds->mds_obt.obt_sb);
219 /* under ext3 this is neither supposed to return bad inodes
221 result = ll_lookup_one_len(fid_name, mds->mds_fid_de, strlen(fid_name));
225 inode = result->d_inode;
227 RETURN(ERR_PTR(-ENOENT));
229 if (inode->i_generation == 0 || inode->i_nlink == 0) {
230 LCONSOLE_WARN("Found inode with zero generation or link -- this"
231 " may indicate disk corruption (inode: %lu/%u, "
232 "link %lu, count %d)\n", inode->i_ino,
233 inode->i_generation,(unsigned long)inode->i_nlink,
234 atomic_read(&inode->i_count));
236 RETURN(ERR_PTR(-ENOENT));
239 if (generation && inode->i_generation != generation) {
240 /* we didn't find the right inode.. */
241 CDEBUG(D_INODE, "found wrong generation: inode %lu, link: %lu, "
242 "count: %d, generation %u/%u\n", inode->i_ino,
243 (unsigned long)inode->i_nlink,
244 atomic_read(&inode->i_count), inode->i_generation,
247 RETURN(ERR_PTR(-ENOENT));
251 *mnt = mds->mds_vfsmnt;
258 static int mds_connect_internal(struct obd_export *exp,
259 struct obd_connect_data *data)
261 struct obd_device *obd = exp->exp_obd;
263 data->ocd_connect_flags &= MDT_CONNECT_SUPPORTED;
264 data->ocd_ibits_known &= MDS_INODELOCK_FULL;
266 /* If no known bits (which should not happen, probably,
267 as everybody should support LOOKUP and UPDATE bits at least)
268 revert to compat mode with plain locks. */
269 if (!data->ocd_ibits_known &&
270 data->ocd_connect_flags & OBD_CONNECT_IBITS)
271 data->ocd_connect_flags &= ~OBD_CONNECT_IBITS;
273 if (!obd->u.mds.mds_fl_acl)
274 data->ocd_connect_flags &= ~OBD_CONNECT_ACL;
276 if (!obd->u.mds.mds_fl_user_xattr)
277 data->ocd_connect_flags &= ~OBD_CONNECT_XATTR;
279 exp->exp_connect_flags = data->ocd_connect_flags;
280 data->ocd_version = LUSTRE_VERSION_CODE;
281 exp->exp_mds_data.med_ibits_known = data->ocd_ibits_known;
284 if (obd->u.mds.mds_fl_acl &&
285 ((exp->exp_connect_flags & OBD_CONNECT_ACL) == 0)) {
286 CWARN("%s: MDS requires ACL support but client does not\n",
293 static int mds_reconnect(struct obd_export *exp, struct obd_device *obd,
294 struct obd_uuid *cluuid,
295 struct obd_connect_data *data)
300 if (exp == NULL || obd == NULL || cluuid == NULL)
303 rc = mds_connect_internal(exp, data);
308 /* Establish a connection to the MDS.
310 * This will set up an export structure for the client to hold state data
311 * about that client, like open files, the last operation number it did
312 * on the server, etc.
314 static int mds_connect(const struct lu_env *env,
315 struct lustre_handle *conn, struct obd_device *obd,
316 struct obd_uuid *cluuid, struct obd_connect_data *data)
318 struct obd_export *exp;
319 struct mds_export_data *med;
320 struct mds_client_data *mcd = NULL;
324 if (!conn || !obd || !cluuid)
327 /* XXX There is a small race between checking the list and adding a
328 * new connection for the same UUID, but the real threat (list
329 * corruption when multiple different clients connect) is solved.
331 * There is a second race between adding the export to the list,
332 * and filling in the client data below. Hence skipping the case
333 * of NULL mcd above. We should already be controlling multiple
334 * connects at the client, and we can't hold the spinlock over
335 * memory allocations without risk of deadlocking.
337 rc = class_connect(conn, obd, cluuid);
340 exp = class_conn2export(conn);
342 med = &exp->exp_mds_data;
344 rc = mds_connect_internal(exp, data);
348 OBD_ALLOC(mcd, sizeof(*mcd));
350 GOTO(out, rc = -ENOMEM);
352 memcpy(mcd->mcd_uuid, cluuid, sizeof(mcd->mcd_uuid));
355 rc = mds_client_add(obd, exp, -1);
361 OBD_FREE(mcd, sizeof(*mcd));
364 class_disconnect(exp);
366 class_export_put(exp);
372 int mds_init_export(struct obd_export *exp)
374 struct mds_export_data *med = &exp->exp_mds_data;
376 INIT_LIST_HEAD(&med->med_open_head);
377 spin_lock_init(&med->med_open_lock);
379 spin_lock(&exp->exp_lock);
380 exp->exp_connecting = 1;
381 spin_unlock(&exp->exp_lock);
386 static int mds_destroy_export(struct obd_export *export)
388 struct mds_export_data *med;
389 struct obd_device *obd = export->exp_obd;
390 struct mds_obd *mds = &obd->u.mds;
391 struct lvfs_run_ctxt saved;
392 struct lov_mds_md *lmm;
393 struct llog_cookie *logcookies;
397 med = &export->exp_mds_data;
398 target_destroy_export(export);
400 if (obd_uuid_equals(&export->exp_client_uuid, &obd->obd_uuid))
403 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
404 /* Close any open files (which may also cause orphan unlinking). */
406 OBD_ALLOC(lmm, mds->mds_max_mdsize);
408 CWARN("%s: allocation failure during cleanup; can not force "
409 "close file handles on this service.\n", obd->obd_name);
410 GOTO(out, rc = -ENOMEM);
413 OBD_ALLOC(logcookies, mds->mds_max_cookiesize);
414 if (logcookies == NULL) {
415 CWARN("%s: allocation failure during cleanup; can not force "
416 "close file handles on this service.\n", obd->obd_name);
417 OBD_FREE(lmm, mds->mds_max_mdsize);
418 GOTO(out_lmm, rc = -ENOMEM);
421 spin_lock(&med->med_open_lock);
422 while (!list_empty(&med->med_open_head)) {
423 struct list_head *tmp = med->med_open_head.next;
424 struct mds_file_data *mfd =
425 list_entry(tmp, struct mds_file_data, mfd_list);
426 int lmm_size = mds->mds_max_mdsize;
427 umode_t mode = mfd->mfd_dentry->d_inode->i_mode;
430 /* Remove mfd handle so it can't be found again.
431 * We are consuming the mfd_list reference here. */
432 mds_mfd_unlink(mfd, 0);
433 spin_unlock(&med->med_open_lock);
435 /* If you change this message, be sure to update
436 * replay_single:test_46 */
437 CDEBUG(D_INODE|D_IOCTL, "%s: force closing file handle for "
438 "%.*s (ino %lu)\n", obd->obd_name,
439 mfd->mfd_dentry->d_name.len,mfd->mfd_dentry->d_name.name,
440 mfd->mfd_dentry->d_inode->i_ino);
442 rc = mds_get_md(obd, mfd->mfd_dentry->d_inode, lmm, &lmm_size, 1);
444 CWARN("mds_get_md failure, rc=%d\n", rc);
446 valid |= OBD_MD_FLEASIZE;
448 /* child orphan sem protects orphan_dec_test and
449 * is_orphan race, mds_mfd_close drops it */
450 MDS_DOWN_WRITE_ORPHAN_SEM(mfd->mfd_dentry->d_inode);
451 rc = mds_mfd_close(NULL, REQ_REC_OFF, obd, mfd,
452 !(export->exp_flags & OBD_OPT_FAILOVER),
453 lmm, lmm_size, logcookies,
454 mds->mds_max_cookiesize,
458 CDEBUG(D_INODE|D_IOCTL, "Error closing file: %d\n", rc);
460 if (valid & OBD_MD_FLCOOKIE) {
461 rc = mds_osc_destroy_orphan(obd, mode, lmm,
462 lmm_size, logcookies, 1);
464 CDEBUG(D_INODE, "%s: destroy of orphan failed,"
465 " rc = %d\n", obd->obd_name, rc);
468 valid &= ~OBD_MD_FLCOOKIE;
471 spin_lock(&med->med_open_lock);
473 spin_unlock(&med->med_open_lock);
475 OBD_FREE(logcookies, mds->mds_max_cookiesize);
477 OBD_FREE(lmm, mds->mds_max_mdsize);
479 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
480 mds_client_free(export);
484 static int mds_disconnect(struct obd_export *exp)
490 class_export_get(exp);
492 /* Disconnect early so that clients can't keep using export */
493 rc = class_disconnect(exp);
494 if (exp->exp_obd->obd_namespace != NULL)
495 ldlm_cancel_locks_for_export(exp);
497 /* complete all outstanding replies */
498 spin_lock(&exp->exp_lock);
499 while (!list_empty(&exp->exp_outstanding_replies)) {
500 struct ptlrpc_reply_state *rs =
501 list_entry(exp->exp_outstanding_replies.next,
502 struct ptlrpc_reply_state, rs_exp_list);
503 struct ptlrpc_service *svc = rs->rs_service;
505 spin_lock(&svc->srv_lock);
506 list_del_init(&rs->rs_exp_list);
507 ptlrpc_schedule_difficult_reply(rs);
508 spin_unlock(&svc->srv_lock);
510 spin_unlock(&exp->exp_lock);
512 class_export_put(exp);
516 static int mds_getstatus(struct ptlrpc_request *req)
518 struct mds_obd *mds = mds_req2mds(req);
519 struct mds_body *body;
520 int rc, size[2] = { sizeof(struct ptlrpc_body), sizeof(*body) };
523 rc = lustre_pack_reply(req, 2, size, NULL);
524 if (rc || OBD_FAIL_CHECK(OBD_FAIL_MDS_GETSTATUS_PACK)) {
525 CERROR("mds: out of memory for message\n");
526 req->rq_status = -ENOMEM; /* superfluous? */
530 body = lustre_msg_buf(req->rq_repmsg, REPLY_REC_OFF, sizeof(*body));
531 memcpy(&body->fid1, &mds->mds_rootfid, sizeof(body->fid1));
533 /* the last_committed and last_xid fields are filled in for all
534 * replies already - no need to do so here also.
539 /* get the LOV EA from @inode and store it into @md. It can be at most
540 * @size bytes, and @size is updated with the actual EA size.
541 * The EA size is also returned on success, and -ve errno on failure.
542 * If there is no EA then 0 is returned. */
543 int mds_get_md(struct obd_device *obd, struct inode *inode, void *md,
550 LOCK_INODE_MUTEX(inode);
551 rc = fsfilt_get_md(obd, inode, md, *size, "lov");
554 CERROR("Error %d reading eadata for ino %lu\n",
558 rc = mds_convert_lov_ea(obd, inode, md, lmm_size);
570 UNLOCK_INODE_MUTEX(inode);
576 /* Call with lock=1 if you want mds_pack_md to take the i_mutex.
577 * Call with lock=0 if the caller has already taken the i_mutex. */
578 int mds_pack_md(struct obd_device *obd, struct lustre_msg *msg, int offset,
579 struct mds_body *body, struct inode *inode, int lock)
581 struct mds_obd *mds = &obd->u.mds;
587 lmm = lustre_msg_buf(msg, offset, 0);
589 /* Some problem with getting eadata when I sized the reply
591 CDEBUG(D_INFO, "no space reserved for inode %lu MD\n",
595 lmm_size = lustre_msg_buflen(msg, offset);
597 /* I don't really like this, but it is a sanity check on the client
598 * MD request. However, if the client doesn't know how much space
599 * to reserve for the MD, it shouldn't be bad to have too much space.
601 if (lmm_size > mds->mds_max_mdsize) {
602 CWARN("Reading MD for inode %lu of %d bytes > max %d\n",
603 inode->i_ino, lmm_size, mds->mds_max_mdsize);
607 rc = mds_get_md(obd, inode, lmm, &lmm_size, lock);
609 if (S_ISDIR(inode->i_mode))
610 body->valid |= OBD_MD_FLDIREA;
612 body->valid |= OBD_MD_FLEASIZE;
613 body->eadatasize = lmm_size;
620 #ifdef CONFIG_FS_POSIX_ACL
622 int mds_pack_posix_acl(struct inode *inode, struct lustre_msg *repmsg,
623 struct mds_body *repbody, int repoff)
625 struct dentry de = { .d_inode = inode };
629 LASSERT(repbody->aclsize == 0);
630 LASSERT(lustre_msg_bufcount(repmsg) > repoff);
632 buflen = lustre_msg_buflen(repmsg, repoff);
636 if (!inode->i_op || !inode->i_op->getxattr)
640 rc = inode->i_op->getxattr(&de, MDS_XATTR_NAME_ACL_ACCESS,
641 lustre_msg_buf(repmsg, repoff, buflen),
646 repbody->aclsize = rc;
647 else if (rc != -ENODATA) {
648 CERROR("buflen %d, get acl: %d\n", buflen, rc);
653 repbody->valid |= OBD_MD_FLACL;
657 #define mds_pack_posix_acl(inode, repmsg, repbody, repoff) 0
660 int mds_pack_acl(struct mds_export_data *med, struct inode *inode,
661 struct lustre_msg *repmsg, struct mds_body *repbody,
664 return mds_pack_posix_acl(inode, repmsg, repbody, repoff);
667 static int mds_getattr_internal(struct obd_device *obd, struct dentry *dentry,
668 struct ptlrpc_request *req,
669 struct mds_body *reqbody, int reply_off)
671 struct mds_body *body;
672 struct inode *inode = dentry->d_inode;
679 body = lustre_msg_buf(req->rq_repmsg, reply_off, sizeof(*body));
680 LASSERT(body != NULL); /* caller prepped reply */
682 mds_pack_inode2fid(&body->fid1, inode);
683 body->flags = reqbody->flags; /* copy MDS_BFLAG_EXT_FLAGS if present */
684 mds_pack_inode2body(body, inode);
687 if ((S_ISREG(inode->i_mode) && (reqbody->valid & OBD_MD_FLEASIZE)) ||
688 (S_ISDIR(inode->i_mode) && (reqbody->valid & OBD_MD_FLDIREA))) {
689 rc = mds_pack_md(obd, req->rq_repmsg, reply_off, body,
692 /* If we have LOV EA data, the OST holds size, atime, mtime */
693 if (!(body->valid & OBD_MD_FLEASIZE) &&
694 !(body->valid & OBD_MD_FLDIREA))
695 body->valid |= (OBD_MD_FLSIZE | OBD_MD_FLBLOCKS |
696 OBD_MD_FLATIME | OBD_MD_FLMTIME);
698 lustre_shrink_reply(req, reply_off, body->eadatasize, 0);
699 if (body->eadatasize)
701 } else if (S_ISLNK(inode->i_mode) &&
702 (reqbody->valid & OBD_MD_LINKNAME) != 0) {
703 char *symname = lustre_msg_buf(req->rq_repmsg, reply_off, 0);
706 LASSERT (symname != NULL); /* caller prepped reply */
707 len = lustre_msg_buflen(req->rq_repmsg, reply_off);
709 rc = inode->i_op->readlink(dentry, symname, len);
711 CERROR("readlink failed: %d\n", rc);
712 } else if (rc != len - 1) {
713 CERROR ("Unexpected readlink rc %d: expecting %d\n",
717 CDEBUG(D_INODE, "read symlink dest %s\n", symname);
718 body->valid |= OBD_MD_LINKNAME;
719 body->eadatasize = rc + 1;
720 symname[rc] = 0; /* NULL terminate */
724 } else if (reqbody->valid == OBD_MD_FLFLAGS &&
725 reqbody->flags & MDS_BFLAG_EXT_FLAGS) {
728 /* We only return the full set of flags on ioctl, otherwise we
729 * get enough flags from the inode in mds_pack_inode2body(). */
730 rc = fsfilt_iocontrol(obd, inode, NULL, EXT3_IOC_GETFLAGS,
733 body->flags = flags | MDS_BFLAG_EXT_FLAGS;
736 if (reqbody->valid & OBD_MD_FLMODEASIZE) {
737 struct mds_obd *mds = mds_req2mds(req);
738 body->max_cookiesize = mds->mds_max_cookiesize;
739 body->max_mdsize = mds->mds_max_mdsize;
740 body->valid |= OBD_MD_FLMODEASIZE;
746 #ifdef CONFIG_FS_POSIX_ACL
747 if ((req->rq_export->exp_connect_flags & OBD_CONNECT_ACL) &&
748 (reqbody->valid & OBD_MD_FLACL)) {
749 rc = mds_pack_acl(&req->rq_export->exp_mds_data,
750 inode, req->rq_repmsg,
753 lustre_shrink_reply(req, reply_off, body->aclsize, 0);
762 static int mds_getattr_pack_msg(struct ptlrpc_request *req, struct inode *inode,
765 struct mds_obd *mds = mds_req2mds(req);
766 struct mds_body *body;
767 int rc, bufcount = 2;
768 int size[4] = { sizeof(struct ptlrpc_body), sizeof(*body) };
771 LASSERT(offset == REQ_REC_OFF); /* non-intent */
773 body = lustre_msg_buf(req->rq_reqmsg, offset, sizeof(*body));
774 LASSERT(body != NULL); /* checked by caller */
775 LASSERT_REQSWABBED(req, offset); /* swabbed by caller */
777 if ((S_ISREG(inode->i_mode) && (body->valid & OBD_MD_FLEASIZE)) ||
778 (S_ISDIR(inode->i_mode) && (body->valid & OBD_MD_FLDIREA))) {
779 LOCK_INODE_MUTEX(inode);
780 rc = fsfilt_get_md(req->rq_export->exp_obd, inode, NULL, 0,
782 UNLOCK_INODE_MUTEX(inode);
783 CDEBUG(D_INODE, "got %d bytes MD data for inode %lu\n",
786 if (rc != -ENODATA) {
787 CERROR("error getting inode %lu MD: rc = %d\n",
792 } else if (rc > mds->mds_max_mdsize) {
794 CERROR("MD size %d larger than maximum possible %u\n",
795 rc, mds->mds_max_mdsize);
800 } else if (S_ISLNK(inode->i_mode) && (body->valid & OBD_MD_LINKNAME)) {
801 if (inode->i_size + 1 != body->eadatasize)
802 CERROR("symlink size: %Lu, reply space: %d\n",
803 inode->i_size + 1, body->eadatasize);
804 size[bufcount] = min_t(int, inode->i_size+1, body->eadatasize);
806 CDEBUG(D_INODE, "symlink size: %Lu, reply space: %d\n",
807 inode->i_size + 1, body->eadatasize);
810 #ifdef CONFIG_FS_POSIX_ACL
811 if ((req->rq_export->exp_connect_flags & OBD_CONNECT_ACL) &&
812 (body->valid & OBD_MD_FLACL)) {
813 struct dentry de = { .d_inode = inode };
816 if (inode->i_op && inode->i_op->getxattr) {
818 rc = inode->i_op->getxattr(&de, MDS_XATTR_NAME_ACL_ACCESS,
823 if (rc != -ENODATA) {
824 CERROR("got acl size: %d\n", rc);
834 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_GETATTR_PACK)) {
835 CERROR("failed MDS_GETATTR_PACK test\n");
836 req->rq_status = -ENOMEM;
840 rc = lustre_pack_reply(req, bufcount, size, NULL);
842 CERROR("lustre_pack_reply failed: rc %d\n", rc);
850 static int mds_getattr_lock(struct ptlrpc_request *req, int offset,
851 int child_part, struct lustre_handle *child_lockh)
853 struct obd_device *obd = req->rq_export->exp_obd;
854 struct mds_obd *mds = &obd->u.mds;
855 struct ldlm_reply *rep = NULL;
856 struct lvfs_run_ctxt saved;
857 struct mds_body *body;
858 struct dentry *dparent = NULL, *dchild = NULL;
859 struct lvfs_ucred uc = {0,};
860 struct lustre_handle parent_lockh;
862 int rc = 0, cleanup_phase = 0, resent_req = 0;
866 LASSERT(!strcmp(obd->obd_type->typ_name, LUSTRE_MDS_NAME));
868 /* Swab now, before anyone looks inside the request */
869 body = lustre_swab_reqbuf(req, offset, sizeof(*body),
870 lustre_swab_mds_body);
872 CERROR("Can't swab mds_body\n");
876 LASSERT_REQSWAB(req, offset + 1);
877 name = lustre_msg_string(req->rq_reqmsg, offset + 1, 0);
879 CERROR("Can't unpack name\n");
882 namesize = lustre_msg_buflen(req->rq_reqmsg, offset + 1);
883 /* namesize less than 2 means we have empty name, probably came from
884 revalidate by cfid, so no point in having name to be set */
888 rc = mds_init_ucred(&uc, req, offset);
892 LASSERT(offset == REQ_REC_OFF || offset == DLM_INTENT_REC_OFF);
893 /* if requests were at offset 2, the getattr reply goes back at 1 */
894 if (offset == DLM_INTENT_REC_OFF) {
895 rep = lustre_msg_buf(req->rq_repmsg, DLM_LOCKREPLY_OFF,
897 offset = DLM_REPLY_REC_OFF;
900 push_ctxt(&saved, &obd->obd_lvfs_ctxt, &uc);
901 cleanup_phase = 1; /* kernel context */
902 intent_set_disposition(rep, DISP_LOOKUP_EXECD);
904 /* FIXME: handle raw lookup */
906 if (body->valid == OBD_MD_FLID) {
907 struct mds_body *mds_reply;
908 int size = sizeof(*mds_reply);
910 // The user requested ONLY the inode number, so do a raw lookup
911 rc = lustre_pack_reply(req, 1, &size, NULL);
913 CERROR("out of memory\n");
917 rc = dir->i_op->lookup_raw(dir, name, namesize - 1, &inum);
919 mds_reply = lustre_msg_buf(req->rq_repmsg, offset,
921 mds_reply->fid1.id = inum;
922 mds_reply->valid = OBD_MD_FLID;
927 if (lustre_handle_is_used(child_lockh)) {
928 LASSERT(lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT);
932 if (resent_req == 0) {
934 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_RESEND, obd_timeout * 2);
935 rc = mds_get_parent_child_locked(obd, &obd->u.mds,
939 MDS_INODELOCK_UPDATE,
941 child_lockh, &dchild,
944 /* For revalidate by fid we always take UPDATE lock */
945 dchild = mds_fid2locked_dentry(obd, &body->fid2, NULL,
950 rc = PTR_ERR(dchild);
955 struct ldlm_lock *granted_lock;
956 struct ll_fid child_fid;
957 struct ldlm_resource *res;
958 DEBUG_REQ(D_DLMTRACE, req, "resent, not enqueuing new locks");
959 granted_lock = ldlm_handle2lock(child_lockh);
960 LASSERTF(granted_lock != NULL, LPU64"/%u lockh "LPX64"\n",
961 body->fid1.id, body->fid1.generation,
962 child_lockh->cookie);
965 res = granted_lock->l_resource;
966 child_fid.id = res->lr_name.name[0];
967 child_fid.generation = res->lr_name.name[1];
968 dchild = mds_fid2dentry(&obd->u.mds, &child_fid, NULL);
969 LASSERT(!IS_ERR(dchild));
970 LDLM_LOCK_PUT(granted_lock);
973 cleanup_phase = 2; /* dchild, dparent, locks */
975 if (dchild->d_inode == NULL) {
976 intent_set_disposition(rep, DISP_LOOKUP_NEG);
977 /* in the intent case, the policy clears this error:
978 the disposition is enough */
979 GOTO(cleanup, rc = -ENOENT);
981 intent_set_disposition(rep, DISP_LOOKUP_POS);
984 if (req->rq_repmsg == NULL) {
985 rc = mds_getattr_pack_msg(req, dchild->d_inode, offset);
987 CERROR ("mds_getattr_pack_msg: %d\n", rc);
992 rc = mds_getattr_internal(obd, dchild, req, body, offset);
993 GOTO(cleanup, rc); /* returns the lock to the client */
996 switch (cleanup_phase) {
998 if (resent_req == 0) {
999 if (rc && dchild->d_inode)
1000 ldlm_lock_decref(child_lockh, LCK_CR);
1002 ldlm_lock_decref(&parent_lockh, LCK_CR);
1008 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, &uc);
1010 mds_exit_ucred(&uc, mds);
1011 if (req->rq_reply_state == NULL) {
1012 req->rq_status = rc;
1013 lustre_pack_reply(req, 1, NULL, NULL);
1019 static int mds_getattr(struct ptlrpc_request *req, int offset)
1021 struct mds_obd *mds = mds_req2mds(req);
1022 struct obd_device *obd = req->rq_export->exp_obd;
1023 struct lvfs_run_ctxt saved;
1025 struct mds_body *body;
1026 struct lvfs_ucred uc = {0,};
1030 OBD_COUNTER_INCREMENT(obd, getattr);
1032 body = lustre_swab_reqbuf(req, offset, sizeof(*body),
1033 lustre_swab_mds_body);
1037 rc = mds_init_ucred(&uc, req, offset);
1039 GOTO(out_ucred, rc);
1041 push_ctxt(&saved, &obd->obd_lvfs_ctxt, &uc);
1042 de = mds_fid2dentry(mds, &body->fid1, NULL);
1044 rc = req->rq_status = PTR_ERR(de);
1048 rc = mds_getattr_pack_msg(req, de->d_inode, offset);
1050 CERROR("mds_getattr_pack_msg: %d\n", rc);
1054 req->rq_status = mds_getattr_internal(obd, de, req, body,
1060 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, &uc);
1062 if (req->rq_reply_state == NULL) {
1063 req->rq_status = rc;
1064 lustre_pack_reply(req, 1, NULL, NULL);
1066 mds_exit_ucred(&uc, mds);
1070 static int mds_obd_statfs(struct obd_device *obd, struct obd_statfs *osfs,
1075 spin_lock(&obd->obd_osfs_lock);
1076 rc = fsfilt_statfs(obd, obd->u.obt.obt_sb, max_age);
1078 memcpy(osfs, &obd->obd_osfs, sizeof(*osfs));
1079 spin_unlock(&obd->obd_osfs_lock);
1084 static int mds_statfs(struct ptlrpc_request *req)
1086 struct obd_device *obd = req->rq_export->exp_obd;
1087 int rc, size[2] = { sizeof(struct ptlrpc_body),
1088 sizeof(struct obd_statfs) };
1091 /* This will trigger a watchdog timeout */
1092 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_STATFS_LCW_SLEEP,
1093 (MDS_SERVICE_WATCHDOG_TIMEOUT / 1000) + 1);
1094 OBD_COUNTER_INCREMENT(obd, statfs);
1096 rc = lustre_pack_reply(req, 2, size, NULL);
1097 if (rc || OBD_FAIL_CHECK(OBD_FAIL_MDS_STATFS_PACK)) {
1098 CERROR("mds: statfs lustre_pack_reply failed: rc = %d\n", rc);
1102 /* We call this so that we can cache a bit - 1 jiffie worth */
1103 rc = mds_obd_statfs(obd, lustre_msg_buf(req->rq_repmsg, REPLY_REC_OFF,
1104 size[REPLY_REC_OFF]),
1105 cfs_time_current_64() - HZ);
1107 CERROR("mds_obd_statfs failed: rc %d\n", rc);
1113 req->rq_status = rc;
1117 static int mds_sync(struct ptlrpc_request *req, int offset)
1119 struct obd_device *obd = req->rq_export->exp_obd;
1120 struct mds_obd *mds = &obd->u.mds;
1121 struct mds_body *body;
1122 int rc, size[2] = { sizeof(struct ptlrpc_body), sizeof(*body) };
1125 body = lustre_swab_reqbuf(req, offset, sizeof(*body),
1126 lustre_swab_mds_body);
1128 GOTO(out, rc = -EFAULT);
1130 rc = lustre_pack_reply(req, 2, size, NULL);
1131 if (rc || OBD_FAIL_CHECK(OBD_FAIL_MDS_SYNC_PACK)) {
1132 CERROR("fsync lustre_pack_reply failed: rc = %d\n", rc);
1136 if (body->fid1.id == 0) {
1137 /* a fid of zero is taken to mean "sync whole filesystem" */
1138 rc = fsfilt_sync(obd, obd->u.obt.obt_sb);
1143 de = mds_fid2dentry(mds, &body->fid1, NULL);
1145 GOTO(out, rc = PTR_ERR(de));
1147 /* The file parameter isn't used for anything */
1148 if (de->d_inode->i_fop && de->d_inode->i_fop->fsync)
1149 rc = de->d_inode->i_fop->fsync(NULL, de, 1);
1151 body = lustre_msg_buf(req->rq_repmsg, REPLY_REC_OFF,
1153 mds_pack_inode2fid(&body->fid1, de->d_inode);
1154 mds_pack_inode2body(body, de->d_inode);
1161 req->rq_status = rc;
1165 /* mds_readpage does not take a DLM lock on the inode, because the client must
1166 * already have a PR lock.
1168 * If we were to take another one here, a deadlock will result, if another
1169 * thread is already waiting for a PW lock. */
1170 static int mds_readpage(struct ptlrpc_request *req, int offset)
1172 struct obd_device *obd = req->rq_export->exp_obd;
1173 struct mds_obd *mds = &obd->u.mds;
1174 struct vfsmount *mnt;
1177 struct mds_body *body, *repbody;
1178 struct lvfs_run_ctxt saved;
1179 int rc, size[2] = { sizeof(struct ptlrpc_body), sizeof(*repbody) };
1180 struct lvfs_ucred uc = {0,};
1183 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_READPAGE_PACK))
1186 rc = lustre_pack_reply(req, 2, size, NULL);
1188 CERROR("error packing readpage reply: rc %d\n", rc);
1192 body = lustre_swab_reqbuf(req, offset, sizeof(*body),
1193 lustre_swab_mds_body);
1195 GOTO (out, rc = -EFAULT);
1197 rc = mds_init_ucred(&uc, req, offset);
1201 push_ctxt(&saved, &obd->obd_lvfs_ctxt, &uc);
1202 de = mds_fid2dentry(&obd->u.mds, &body->fid1, &mnt);
1204 GOTO(out_pop, rc = PTR_ERR(de));
1206 CDEBUG(D_INODE, "ino %lu\n", de->d_inode->i_ino);
1208 file = dentry_open(de, mnt, O_RDONLY | O_LARGEFILE);
1209 /* note: in case of an error, dentry_open puts dentry */
1211 GOTO(out_pop, rc = PTR_ERR(file));
1213 /* body->size is actually the offset -eeb */
1214 if ((body->size & (de->d_inode->i_sb->s_blocksize - 1)) != 0) {
1215 CERROR("offset "LPU64" not on a block boundary of %lu\n",
1216 body->size, de->d_inode->i_sb->s_blocksize);
1217 GOTO(out_file, rc = -EFAULT);
1220 /* body->nlink is actually the #bytes to read -eeb */
1221 if (body->nlink & (de->d_inode->i_sb->s_blocksize - 1)) {
1222 CERROR("size %u is not multiple of blocksize %lu\n",
1223 body->nlink, de->d_inode->i_sb->s_blocksize);
1224 GOTO(out_file, rc = -EFAULT);
1227 repbody = lustre_msg_buf(req->rq_repmsg, REPLY_REC_OFF,
1229 repbody->size = file->f_dentry->d_inode->i_size;
1230 repbody->valid = OBD_MD_FLSIZE;
1232 /* to make this asynchronous make sure that the handling function
1233 doesn't send a reply when this function completes. Instead a
1234 callback function would send the reply */
1235 /* body->size is actually the offset -eeb */
1236 rc = mds_sendpage(req, file, body->size, body->nlink);
1239 filp_close(file, 0);
1241 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, &uc);
1243 mds_exit_ucred(&uc, mds);
1244 req->rq_status = rc;
1248 int mds_reint(struct ptlrpc_request *req, int offset,
1249 struct lustre_handle *lockh)
1251 struct mds_update_record *rec; /* 116 bytes on the stack? no sir! */
1254 OBD_ALLOC(rec, sizeof(*rec));
1258 rc = mds_update_unpack(req, offset, rec);
1259 if (rc || OBD_FAIL_CHECK(OBD_FAIL_MDS_REINT_UNPACK)) {
1260 CERROR("invalid record\n");
1261 GOTO(out, req->rq_status = -EINVAL);
1264 /* rc will be used to interrupt a for loop over multiple records */
1265 rc = mds_reint_rec(rec, offset, req, lockh);
1267 OBD_FREE(rec, sizeof(*rec));
1271 int mds_filter_recovery_request(struct ptlrpc_request *req,
1272 struct obd_device *obd, int *process)
1274 switch (lustre_msg_get_opc(req->rq_reqmsg)) {
1275 case MDS_CONNECT: /* This will never get here, but for completeness. */
1276 case OST_CONNECT: /* This will never get here, but for completeness. */
1277 case MDS_DISCONNECT:
1278 case OST_DISCONNECT:
1283 case MDS_DONE_WRITING:
1284 case MDS_SYNC: /* used in unmounting */
1290 *process = target_queue_recovery_request(req, obd);
1294 DEBUG_REQ(D_ERROR, req, "not permitted during recovery");
1299 EXPORT_SYMBOL(mds_filter_recovery_request);
1301 static char *reint_names[] = {
1302 [REINT_SETATTR] "setattr",
1303 [REINT_CREATE] "create",
1304 [REINT_LINK] "link",
1305 [REINT_UNLINK] "unlink",
1306 [REINT_RENAME] "rename",
1307 [REINT_OPEN] "open",
1310 static int mds_set_info_rpc(struct obd_export *exp, struct ptlrpc_request *req)
1317 key = lustre_msg_buf(req->rq_reqmsg, REQ_REC_OFF, 1);
1319 DEBUG_REQ(D_HA, req, "no set_info key");
1322 keylen = lustre_msg_buflen(req->rq_reqmsg, REQ_REC_OFF);
1324 val = lustre_msg_buf(req->rq_reqmsg, REQ_REC_OFF + 1, sizeof(*val));
1326 DEBUG_REQ(D_HA, req, "no set_info val");
1330 rc = lustre_pack_reply(req, 1, NULL, NULL);
1333 lustre_msg_set_status(req->rq_repmsg, 0);
1335 if (keylen < strlen("read-only") ||
1336 memcmp(key, "read-only", keylen) != 0)
1340 exp->exp_connect_flags |= OBD_CONNECT_RDONLY;
1342 exp->exp_connect_flags &= ~OBD_CONNECT_RDONLY;
1347 static int mds_handle_quotacheck(struct ptlrpc_request *req)
1349 struct obd_quotactl *oqctl;
1353 oqctl = lustre_swab_reqbuf(req, REQ_REC_OFF, sizeof(*oqctl),
1354 lustre_swab_obd_quotactl);
1358 rc = lustre_pack_reply(req, 1, NULL, NULL);
1360 CERROR("mds: out of memory while packing quotacheck reply\n");
1364 req->rq_status = obd_quotacheck(req->rq_export, oqctl);
1368 static int mds_handle_quotactl(struct ptlrpc_request *req)
1370 struct obd_quotactl *oqctl, *repoqc;
1371 int rc, size[2] = { sizeof(struct ptlrpc_body), sizeof(*repoqc) };
1374 oqctl = lustre_swab_reqbuf(req, REQ_REC_OFF, sizeof(*oqctl),
1375 lustre_swab_obd_quotactl);
1379 rc = lustre_pack_reply(req, 2, size, NULL);
1383 repoqc = lustre_msg_buf(req->rq_repmsg, REPLY_REC_OFF, sizeof(*repoqc));
1385 req->rq_status = obd_quotactl(req->rq_export, oqctl);
1390 int mds_msg_check_version(struct lustre_msg *msg)
1394 switch (lustre_msg_get_opc(msg)) {
1396 case MDS_DISCONNECT:
1399 case SEC_CTX_INIT_CONT:
1401 rc = lustre_msg_check_version(msg, LUSTRE_OBD_VERSION);
1403 CERROR("bad opc %u version %08x, expecting %08x\n",
1404 lustre_msg_get_opc(msg),
1405 lustre_msg_get_version(msg),
1406 LUSTRE_OBD_VERSION);
1410 case MDS_GETATTR_NAME:
1417 case MDS_DONE_WRITING:
1423 case MDS_QUOTACHECK:
1429 rc = lustre_msg_check_version(msg, LUSTRE_MDS_VERSION);
1431 CERROR("bad opc %u version %08x, expecting %08x\n",
1432 lustre_msg_get_opc(msg),
1433 lustre_msg_get_version(msg),
1434 LUSTRE_MDS_VERSION);
1438 case LDLM_BL_CALLBACK:
1439 case LDLM_CP_CALLBACK:
1440 rc = lustre_msg_check_version(msg, LUSTRE_DLM_VERSION);
1442 CERROR("bad opc %u version %08x, expecting %08x\n",
1443 lustre_msg_get_opc(msg),
1444 lustre_msg_get_version(msg),
1445 LUSTRE_DLM_VERSION);
1447 case OBD_LOG_CANCEL:
1448 case LLOG_ORIGIN_HANDLE_CREATE:
1449 case LLOG_ORIGIN_HANDLE_NEXT_BLOCK:
1450 case LLOG_ORIGIN_HANDLE_READ_HEADER:
1451 case LLOG_ORIGIN_HANDLE_CLOSE:
1452 case LLOG_ORIGIN_HANDLE_DESTROY:
1453 case LLOG_ORIGIN_HANDLE_PREV_BLOCK:
1455 rc = lustre_msg_check_version(msg, LUSTRE_LOG_VERSION);
1457 CERROR("bad opc %u version %08x, expecting %08x\n",
1458 lustre_msg_get_opc(msg),
1459 lustre_msg_get_version(msg),
1460 LUSTRE_LOG_VERSION);
1463 CERROR("MDS unknown opcode %d\n", lustre_msg_get_opc(msg));
1468 EXPORT_SYMBOL(mds_msg_check_version);
1470 int mds_handle(struct ptlrpc_request *req)
1472 int should_process, fail = OBD_FAIL_MDS_ALL_REPLY_NET;
1474 struct mds_obd *mds = NULL; /* quell gcc overwarning */
1475 struct obd_device *obd = NULL;
1478 OBD_FAIL_RETURN(OBD_FAIL_MDS_ALL_REQUEST_NET | OBD_FAIL_ONCE, 0);
1480 LASSERT(current->journal_info == NULL);
1482 rc = mds_msg_check_version(req->rq_reqmsg);
1484 CERROR("MDS drop mal-formed request\n");
1488 /* XXX identical to OST */
1489 if (lustre_msg_get_opc(req->rq_reqmsg) != MDS_CONNECT) {
1490 struct mds_export_data *med;
1493 if (req->rq_export == NULL) {
1494 CERROR("operation %d on unconnected MDS from %s\n",
1495 lustre_msg_get_opc(req->rq_reqmsg),
1496 libcfs_id2str(req->rq_peer));
1497 req->rq_status = -ENOTCONN;
1498 GOTO(out, rc = -ENOTCONN);
1501 med = &req->rq_export->exp_mds_data;
1502 obd = req->rq_export->exp_obd;
1503 mds = mds_req2mds(req);
1505 /* sanity check: if the xid matches, the request must
1506 * be marked as a resent or replayed */
1507 if (req->rq_xid == le64_to_cpu(med->med_mcd->mcd_last_xid) ||
1508 req->rq_xid == le64_to_cpu(med->med_mcd->mcd_last_close_xid))
1509 if (!(lustre_msg_get_flags(req->rq_reqmsg) &
1510 (MSG_RESENT | MSG_REPLAY))) {
1511 CERROR("rq_xid "LPU64" matches last_xid, "
1512 "expected RESENT flag\n",
1514 req->rq_status = -ENOTCONN;
1515 GOTO(out, rc = -EFAULT);
1517 /* else: note the opposite is not always true; a
1518 * RESENT req after a failover will usually not match
1519 * the last_xid, since it was likely never
1520 * committed. A REPLAYed request will almost never
1521 * match the last xid, however it could for a
1522 * committed, but still retained, open. */
1524 /* Check for aborted recovery. */
1525 spin_lock_bh(&obd->obd_processing_task_lock);
1526 recovering = obd->obd_recovering;
1527 spin_unlock_bh(&obd->obd_processing_task_lock);
1529 rc = mds_filter_recovery_request(req, obd,
1531 if (rc || !should_process)
1533 else if (should_process < 0) {
1534 req->rq_status = should_process;
1535 rc = ptlrpc_error(req);
1541 switch (lustre_msg_get_opc(req->rq_reqmsg)) {
1543 DEBUG_REQ(D_INODE, req, "connect");
1544 OBD_FAIL_RETURN(OBD_FAIL_MDS_CONNECT_NET, 0);
1545 rc = target_handle_connect(req);
1547 /* Now that we have an export, set mds. */
1549 * XXX nikita: these assignments are useless: mds is
1550 * never used below, and obd is only used for
1551 * MSG_LAST_REPLAY case, which never happens for
1554 obd = req->rq_export->exp_obd;
1555 mds = mds_req2mds(req);
1559 case MDS_DISCONNECT:
1560 DEBUG_REQ(D_INODE, req, "disconnect");
1561 OBD_FAIL_RETURN(OBD_FAIL_MDS_DISCONNECT_NET, 0);
1562 rc = target_handle_disconnect(req);
1563 req->rq_status = rc; /* superfluous? */
1567 DEBUG_REQ(D_INODE, req, "getstatus");
1568 OBD_FAIL_RETURN(OBD_FAIL_MDS_GETSTATUS_NET, 0);
1569 rc = mds_getstatus(req);
1573 DEBUG_REQ(D_INODE, req, "getattr");
1574 OBD_FAIL_RETURN(OBD_FAIL_MDS_GETATTR_NET, 0);
1575 rc = mds_getattr(req, REQ_REC_OFF);
1579 DEBUG_REQ(D_INODE, req, "setxattr");
1580 OBD_FAIL_RETURN(OBD_FAIL_MDS_SETXATTR_NET, 0);
1581 rc = mds_setxattr(req);
1585 DEBUG_REQ(D_INODE, req, "getxattr");
1586 OBD_FAIL_RETURN(OBD_FAIL_MDS_GETXATTR_NET, 0);
1587 rc = mds_getxattr(req);
1590 case MDS_GETATTR_NAME: {
1591 struct lustre_handle lockh = { 0 };
1592 DEBUG_REQ(D_INODE, req, "getattr_name");
1593 OBD_FAIL_RETURN(OBD_FAIL_MDS_GETATTR_NAME_NET, 0);
1595 /* If this request gets a reconstructed reply, we won't be
1596 * acquiring any new locks in mds_getattr_lock, so we don't
1599 rc = mds_getattr_lock(req, REQ_REC_OFF, MDS_INODELOCK_UPDATE,
1601 /* this non-intent call (from an ioctl) is special */
1602 req->rq_status = rc;
1603 if (rc == 0 && lustre_handle_is_used(&lockh))
1604 ldlm_lock_decref(&lockh, LCK_CR);
1608 DEBUG_REQ(D_INODE, req, "statfs");
1609 OBD_FAIL_RETURN(OBD_FAIL_MDS_STATFS_NET, 0);
1610 rc = mds_statfs(req);
1614 DEBUG_REQ(D_INODE, req, "readpage");
1615 OBD_FAIL_RETURN(OBD_FAIL_MDS_READPAGE_NET, 0);
1616 rc = mds_readpage(req, REQ_REC_OFF);
1618 if (OBD_FAIL_CHECK_ONCE(OBD_FAIL_MDS_SENDPAGE)) {
1625 __u32 *opcp = lustre_msg_buf(req->rq_reqmsg, REQ_REC_OFF,
1628 int size[4] = { sizeof(struct ptlrpc_body),
1629 sizeof(struct mds_body),
1630 mds->mds_max_mdsize,
1631 mds->mds_max_cookiesize };
1634 /* NB only peek inside req now; mds_reint() will swab it */
1636 CERROR ("Can't inspect opcode\n");
1641 if (lustre_msg_swabbed(req->rq_reqmsg))
1644 DEBUG_REQ(D_INODE, req, "reint %d (%s)", opc,
1645 (opc < sizeof(reint_names) / sizeof(reint_names[0]) ||
1646 reint_names[opc] == NULL) ? reint_names[opc] :
1649 OBD_FAIL_RETURN(OBD_FAIL_MDS_REINT_NET, 0);
1651 if (opc == REINT_UNLINK || opc == REINT_RENAME)
1653 else if (opc == REINT_OPEN)
1658 rc = lustre_pack_reply(req, bufcount, size, NULL);
1662 rc = mds_reint(req, REQ_REC_OFF, NULL);
1663 fail = OBD_FAIL_MDS_REINT_NET_REP;
1668 DEBUG_REQ(D_INODE, req, "close");
1669 OBD_FAIL_RETURN(OBD_FAIL_MDS_CLOSE_NET, 0);
1670 rc = mds_close(req, REQ_REC_OFF);
1673 case MDS_DONE_WRITING:
1674 DEBUG_REQ(D_INODE, req, "done_writing");
1675 OBD_FAIL_RETURN(OBD_FAIL_MDS_DONE_WRITING_NET, 0);
1676 rc = mds_done_writing(req, REQ_REC_OFF);
1680 DEBUG_REQ(D_INODE, req, "pin");
1681 OBD_FAIL_RETURN(OBD_FAIL_MDS_PIN_NET, 0);
1682 rc = mds_pin(req, REQ_REC_OFF);
1686 DEBUG_REQ(D_INODE, req, "sync");
1687 OBD_FAIL_RETURN(OBD_FAIL_MDS_SYNC_NET, 0);
1688 rc = mds_sync(req, REQ_REC_OFF);
1692 DEBUG_REQ(D_INODE, req, "set_info");
1693 rc = mds_set_info_rpc(req->rq_export, req);
1696 case MDS_QUOTACHECK:
1697 DEBUG_REQ(D_INODE, req, "quotacheck");
1698 OBD_FAIL_RETURN(OBD_FAIL_MDS_QUOTACHECK_NET, 0);
1699 rc = mds_handle_quotacheck(req);
1703 DEBUG_REQ(D_INODE, req, "quotactl");
1704 OBD_FAIL_RETURN(OBD_FAIL_MDS_QUOTACTL_NET, 0);
1705 rc = mds_handle_quotactl(req);
1709 DEBUG_REQ(D_INODE, req, "ping");
1710 rc = target_handle_ping(req);
1713 case OBD_LOG_CANCEL:
1714 CDEBUG(D_INODE, "log cancel\n");
1715 OBD_FAIL_RETURN(OBD_FAIL_OBD_LOG_CANCEL_NET, 0);
1716 rc = -ENOTSUPP; /* la la la */
1720 DEBUG_REQ(D_INODE, req, "enqueue");
1721 OBD_FAIL_RETURN(OBD_FAIL_LDLM_ENQUEUE, 0);
1722 rc = ldlm_handle_enqueue(req, ldlm_server_completion_ast,
1723 ldlm_server_blocking_ast, NULL);
1724 fail = OBD_FAIL_LDLM_REPLY;
1727 DEBUG_REQ(D_INODE, req, "convert");
1728 OBD_FAIL_RETURN(OBD_FAIL_LDLM_CONVERT, 0);
1729 rc = ldlm_handle_convert(req);
1731 case LDLM_BL_CALLBACK:
1732 case LDLM_CP_CALLBACK:
1733 DEBUG_REQ(D_INODE, req, "callback");
1734 CERROR("callbacks should not happen on MDS\n");
1736 OBD_FAIL_RETURN(OBD_FAIL_LDLM_BL_CALLBACK, 0);
1738 case LLOG_ORIGIN_HANDLE_CREATE:
1739 DEBUG_REQ(D_INODE, req, "llog_init");
1740 OBD_FAIL_RETURN(OBD_FAIL_OBD_LOGD_NET, 0);
1741 rc = llog_origin_handle_create(req);
1743 case LLOG_ORIGIN_HANDLE_DESTROY:
1744 DEBUG_REQ(D_INODE, req, "llog_init");
1745 OBD_FAIL_RETURN(OBD_FAIL_OBD_LOGD_NET, 0);
1746 rc = llog_origin_handle_destroy(req);
1748 case LLOG_ORIGIN_HANDLE_NEXT_BLOCK:
1749 DEBUG_REQ(D_INODE, req, "llog next block");
1750 OBD_FAIL_RETURN(OBD_FAIL_OBD_LOGD_NET, 0);
1751 rc = llog_origin_handle_next_block(req);
1753 case LLOG_ORIGIN_HANDLE_PREV_BLOCK:
1754 DEBUG_REQ(D_INODE, req, "llog prev block");
1755 OBD_FAIL_RETURN(OBD_FAIL_OBD_LOGD_NET, 0);
1756 rc = llog_origin_handle_prev_block(req);
1758 case LLOG_ORIGIN_HANDLE_READ_HEADER:
1759 DEBUG_REQ(D_INODE, req, "llog read header");
1760 OBD_FAIL_RETURN(OBD_FAIL_OBD_LOGD_NET, 0);
1761 rc = llog_origin_handle_read_header(req);
1763 case LLOG_ORIGIN_HANDLE_CLOSE:
1764 DEBUG_REQ(D_INODE, req, "llog close");
1765 OBD_FAIL_RETURN(OBD_FAIL_OBD_LOGD_NET, 0);
1766 rc = llog_origin_handle_close(req);
1769 DEBUG_REQ(D_INODE, req, "llog catinfo");
1770 OBD_FAIL_RETURN(OBD_FAIL_OBD_LOGD_NET, 0);
1771 rc = llog_catinfo(req);
1774 req->rq_status = -ENOTSUPP;
1775 rc = ptlrpc_error(req);
1779 LASSERT(current->journal_info == NULL);
1781 /* If we're DISCONNECTing, the mds_export_data is already freed */
1782 if (!rc && lustre_msg_get_opc(req->rq_reqmsg) != MDS_DISCONNECT) {
1783 struct mds_export_data *med = &req->rq_export->exp_mds_data;
1785 /* I don't think last_xid is used for anyway, so I'm not sure
1786 if we need to care about last_close_xid here.*/
1787 lustre_msg_set_last_xid(req->rq_repmsg,
1788 le64_to_cpu(med->med_mcd->mcd_last_xid));
1790 target_committed_to_req(req);
1796 target_send_reply(req, rc, fail);
1800 /* Update the server data on disk. This stores the new mount_count and
1801 * also the last_rcvd value to disk. If we don't have a clean shutdown,
1802 * then the server last_rcvd value may be less than that of the clients.
1803 * This will alert us that we may need to do client recovery.
1805 * Also assumes for mds_last_transno that we are not modifying it (no locking).
1807 int mds_update_server_data(struct obd_device *obd, int force_sync)
1809 struct mds_obd *mds = &obd->u.mds;
1810 struct lr_server_data *lsd = mds->mds_server_data;
1811 struct file *filp = mds->mds_rcvd_filp;
1812 struct lvfs_run_ctxt saved;
1817 CDEBUG(D_SUPER, "MDS mount_count is "LPU64", last_transno is "LPU64"\n",
1818 mds->mds_mount_count, mds->mds_last_transno);
1820 spin_lock(&mds->mds_transno_lock);
1821 lsd->lsd_last_transno = cpu_to_le64(mds->mds_last_transno);
1822 spin_unlock(&mds->mds_transno_lock);
1824 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
1825 rc = fsfilt_write_record(obd, filp, lsd, sizeof(*lsd), &off,force_sync);
1826 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
1828 CERROR("error writing MDS server data: rc = %d\n", rc);
1832 static void fsoptions_to_mds_flags(struct mds_obd *mds, char *options)
1842 while (*p && *p != ',')
1846 if (len == sizeof("user_xattr") - 1 &&
1847 memcmp(options, "user_xattr", len) == 0) {
1848 mds->mds_fl_user_xattr = 1;
1849 LCONSOLE_INFO("Enabling user_xattr\n");
1850 } else if (len == sizeof("nouser_xattr") - 1 &&
1851 memcmp(options, "nouser_xattr", len) == 0) {
1852 mds->mds_fl_user_xattr = 0;
1853 LCONSOLE_INFO("Disabling user_xattr\n");
1854 } else if (len == sizeof("acl") - 1 &&
1855 memcmp(options, "acl", len) == 0) {
1856 #ifdef CONFIG_FS_POSIX_ACL
1857 mds->mds_fl_acl = 1;
1858 LCONSOLE_INFO("Enabling ACL\n");
1860 CWARN("ignoring unsupported acl mount option\n");
1862 } else if (len == sizeof("noacl") - 1 &&
1863 memcmp(options, "noacl", len) == 0) {
1864 #ifdef CONFIG_FS_POSIX_ACL
1865 mds->mds_fl_acl = 0;
1866 LCONSOLE_INFO("Disabling ACL\n");
1873 static int mds_lov_presetup (struct mds_obd *mds, struct lustre_cfg *lcfg)
1878 rc = llog_start_commit_thread();
1882 if (lcfg->lcfg_bufcount >= 4 && LUSTRE_CFG_BUFLEN(lcfg, 3) > 0) {
1885 ll_generate_random_uuid(uuid);
1886 class_uuid_unparse(uuid, &mds->mds_lov_uuid);
1888 OBD_ALLOC(mds->mds_profile, LUSTRE_CFG_BUFLEN(lcfg, 3));
1889 if (mds->mds_profile == NULL)
1892 strncpy(mds->mds_profile, lustre_cfg_string(lcfg, 3),
1893 LUSTRE_CFG_BUFLEN(lcfg, 3));
1898 /* mount the file system (secretly). lustre_cfg parameters are:
1904 static int mds_setup(struct obd_device *obd, struct lustre_cfg* lcfg)
1906 struct lprocfs_static_vars lvars;
1907 struct mds_obd *mds = &obd->u.mds;
1908 struct lustre_mount_info *lmi;
1909 struct vfsmount *mnt;
1910 struct lustre_sb_info *lsi;
1911 struct obd_uuid uuid;
1918 /* setup 1:/dev/loop/0 2:ext3 3:mdsA 4:errors=remount-ro,iopen_nopriv */
1920 CLASSERT(offsetof(struct obd_device, u.obt) ==
1921 offsetof(struct obd_device, u.mds.mds_obt));
1923 if (lcfg->lcfg_bufcount < 3)
1926 if (LUSTRE_CFG_BUFLEN(lcfg, 1) == 0 || LUSTRE_CFG_BUFLEN(lcfg, 2) == 0)
1929 lmi = server_get_mount(obd->obd_name);
1931 CERROR("Not mounted in lustre_fill_super?\n");
1935 /* We mounted in lustre_fill_super.
1936 lcfg bufs 1, 2, 4 (device, fstype, mount opts) are ignored.*/
1938 lsi = s2lsi(lmi->lmi_sb);
1939 fsoptions_to_mds_flags(mds, lsi->lsi_ldd->ldd_mount_opts);
1940 fsoptions_to_mds_flags(mds, lsi->lsi_lmd->lmd_opts);
1942 obd->obd_fsops = fsfilt_get_ops(MT_STR(lsi->lsi_ldd));
1943 if (IS_ERR(obd->obd_fsops))
1944 GOTO(err_put, rc = PTR_ERR(obd->obd_fsops));
1946 CDEBUG(D_SUPER, "%s: mnt = %p\n", lustre_cfg_string(lcfg, 1), mnt);
1948 LASSERT(!lvfs_check_rdonly(lvfs_sbdev(mnt->mnt_sb)));
1950 sema_init(&mds->mds_epoch_sem, 1);
1951 spin_lock_init(&mds->mds_transno_lock);
1952 mds->mds_max_mdsize = sizeof(struct lov_mds_md);
1953 mds->mds_max_cookiesize = sizeof(struct llog_cookie);
1954 mds->mds_atime_diff = MAX_ATIME_DIFF;
1956 sprintf(ns_name, "mds-%s", obd->obd_uuid.uuid);
1957 obd->obd_namespace = ldlm_namespace_new(ns_name, LDLM_NAMESPACE_SERVER);
1958 if (obd->obd_namespace == NULL) {
1960 GOTO(err_ops, rc = -ENOMEM);
1962 ldlm_register_intent(obd->obd_namespace, mds_intent_policy);
1964 lprocfs_init_vars(mds, &lvars);
1965 if (lprocfs_obd_setup(obd, lvars.obd_vars) == 0 &&
1966 lprocfs_alloc_obd_stats(obd, LPROC_MDS_LAST) == 0) {
1967 /* Init private stats here */
1968 mds_stats_counter_init(obd->obd_stats);
1969 obd->obd_proc_exports = proc_mkdir("exports",
1970 obd->obd_proc_entry);
1973 rc = mds_fs_setup(obd, mnt);
1975 CERROR("%s: MDS filesystem method init failed: rc = %d\n",
1980 rc = mds_lov_presetup(mds, lcfg);
1984 ptlrpc_init_client(LDLM_CB_REQUEST_PORTAL, LDLM_CB_REPLY_PORTAL,
1985 "mds_ldlm_client", &obd->obd_ldlm_client);
1986 obd->obd_replayable = 1;
1988 rc = lquota_setup(mds_quota_interface_ref, obd);
1993 mds->mds_group_hash = upcall_cache_init(obd->obd_name);
1994 if (IS_ERR(mds->mds_group_hash)) {
1995 rc = PTR_ERR(mds->mds_group_hash);
1996 mds->mds_group_hash = NULL;
1997 GOTO(err_qctxt, rc);
2001 /* Don't wait for mds_postrecov trying to clear orphans */
2002 obd->obd_async_recov = 1;
2003 rc = mds_postsetup(obd);
2004 /* Bug 11557 - allow async abort_recov start
2005 FIXME can remove most of this obd_async_recov plumbing
2006 obd->obd_async_recov = 0;
2009 GOTO(err_qctxt, rc);
2011 uuid_ptr = fsfilt_uuid(obd, obd->u.obt.obt_sb);
2012 if (uuid_ptr != NULL) {
2013 class_uuid_unparse(uuid_ptr, &uuid);
2019 label = fsfilt_get_label(obd, obd->u.obt.obt_sb);
2020 if (obd->obd_recovering) {
2021 LCONSOLE_WARN("MDT %s now serving %s (%s%s%s), but will be in "
2022 "recovery until %d %s reconnect, or if no clients"
2023 " reconnect for %d:%.02d; during that time new "
2024 "clients will not be allowed to connect. "
2025 "Recovery progress can be monitored by watching "
2026 "/proc/fs/lustre/mds/%s/recovery_status.\n",
2027 obd->obd_name, lustre_cfg_string(lcfg, 1),
2028 label ?: "", label ? "/" : "", str,
2029 obd->obd_max_recoverable_clients,
2030 (obd->obd_max_recoverable_clients == 1) ?
2031 "client" : "clients",
2032 (int)(OBD_RECOVERY_TIMEOUT) / 60,
2033 (int)(OBD_RECOVERY_TIMEOUT) % 60,
2036 LCONSOLE_INFO("MDT %s now serving %s (%s%s%s) with recovery "
2037 "%s\n", obd->obd_name, lustre_cfg_string(lcfg, 1),
2038 label ?: "", label ? "/" : "", str,
2039 obd->obd_replayable ? "enabled" : "disabled");
2042 if (ldlm_timeout == LDLM_TIMEOUT_DEFAULT)
2048 lquota_cleanup(mds_quota_interface_ref, obd);
2050 /* No extra cleanup needed for llog_init_commit_thread() */
2051 mds_fs_cleanup(obd);
2053 upcall_cache_cleanup(mds->mds_group_hash);
2054 mds->mds_group_hash = NULL;
2057 lprocfs_obd_cleanup(obd);
2058 lprocfs_free_obd_stats(obd);
2059 ldlm_namespace_free(obd->obd_namespace, 0);
2060 obd->obd_namespace = NULL;
2062 fsfilt_put_ops(obd->obd_fsops);
2064 server_put_mount(obd->obd_name, mnt);
2065 obd->u.obt.obt_sb = NULL;
2069 static int mds_lov_clean(struct obd_device *obd)
2071 struct mds_obd *mds = &obd->u.mds;
2072 struct obd_device *osc = mds->mds_osc_obd;
2075 if (mds->mds_profile) {
2076 class_del_profile(mds->mds_profile);
2077 OBD_FREE(mds->mds_profile, strlen(mds->mds_profile) + 1);
2078 mds->mds_profile = NULL;
2081 /* There better be a lov */
2085 RETURN(PTR_ERR(osc));
2087 obd_register_observer(osc, NULL);
2089 /* Give lov our same shutdown flags */
2090 osc->obd_force = obd->obd_force;
2091 osc->obd_fail = obd->obd_fail;
2093 /* Cleanup the lov */
2094 obd_disconnect(mds->mds_osc_exp);
2095 class_manual_cleanup(osc);
2096 mds->mds_osc_exp = NULL;
2101 static int mds_postsetup(struct obd_device *obd)
2103 struct mds_obd *mds = &obd->u.mds;
2107 rc = llog_setup(obd, NULL, LLOG_CONFIG_ORIG_CTXT, obd, 0, NULL,
2112 rc = llog_setup(obd, NULL, LLOG_LOVEA_ORIG_CTXT, obd, 0, NULL,
2117 if (mds->mds_profile) {
2118 struct lustre_profile *lprof;
2119 /* The profile defines which osc and mdc to connect to, for a
2120 client. We reuse that here to figure out the name of the
2121 lov to use (and ignore lprof->lp_md).
2122 The profile was set in the config log with
2123 LCFG_MOUNTOPT profilenm oscnm mdcnm */
2124 lprof = class_get_profile(mds->mds_profile);
2125 if (lprof == NULL) {
2126 CERROR("No profile found: %s\n", mds->mds_profile);
2127 GOTO(err_cleanup, rc = -ENOENT);
2129 rc = mds_lov_connect(obd, lprof->lp_dt);
2131 GOTO(err_cleanup, rc);
2138 llog_cleanup(llog_get_context(obd, LLOG_CONFIG_ORIG_CTXT));
2139 llog_cleanup(llog_get_context(obd, LLOG_LOVEA_ORIG_CTXT));
2143 int mds_postrecov(struct obd_device *obd)
2151 LASSERT(!obd->obd_recovering);
2152 LASSERT(llog_get_context(obd, LLOG_MDS_OST_ORIG_CTXT) != NULL);
2154 /* FIXME why not put this in the synchronize? */
2155 /* set nextid first, so we are sure it happens */
2156 rc = mds_lov_set_nextid(obd);
2158 CERROR("%s: mds_lov_set_nextid failed %d\n",
2163 /* clean PENDING dir */
2164 if (strncmp(obd->obd_name, MDD_OBD_NAME, strlen(MDD_OBD_NAME)))
2165 rc = mds_cleanup_pending(obd);
2169 /* FIXME Does target_finish_recovery really need this to block? */
2170 /* Notify the LOV, which will in turn call mds_notify for each tgt */
2171 /* This means that we have to hack obd_notify to think we're obd_set_up
2172 during mds_lov_connect. */
2173 obd_notify(obd->u.mds.mds_osc_obd, NULL,
2174 obd->obd_async_recov ? OBD_NOTIFY_SYNC_NONBLOCK :
2175 OBD_NOTIFY_SYNC, NULL);
2177 /* quota recovery */
2178 lquota_recovery(mds_quota_interface_ref, obd);
2184 /* We need to be able to stop an mds_lov_synchronize */
2185 static int mds_lov_early_clean(struct obd_device *obd)
2187 struct mds_obd *mds = &obd->u.mds;
2188 struct obd_device *osc = mds->mds_osc_obd;
2190 if (!osc || (!obd->obd_force && !obd->obd_fail))
2193 CDEBUG(D_HA, "abort inflight\n");
2194 return (obd_precleanup(osc, OBD_CLEANUP_EARLY));
2197 static int mds_precleanup(struct obd_device *obd, enum obd_cleanup_stage stage)
2203 case OBD_CLEANUP_EARLY:
2205 case OBD_CLEANUP_EXPORTS:
2206 /*XXX Use this for mdd mds cleanup, so comment out
2207 *this target_cleanup_recovery for this tmp MDD MDS
2209 if (strncmp(obd->obd_name, MDD_OBD_NAME, strlen(MDD_OBD_NAME)))
2210 target_cleanup_recovery(obd);
2211 mds_lov_early_clean(obd);
2213 case OBD_CLEANUP_SELF_EXP:
2214 mds_lov_disconnect(obd);
2216 llog_cleanup(llog_get_context(obd, LLOG_CONFIG_ORIG_CTXT));
2217 llog_cleanup(llog_get_context(obd, LLOG_LOVEA_ORIG_CTXT));
2218 rc = obd_llog_finish(obd, 0);
2220 case OBD_CLEANUP_OBD:
2226 static int mds_cleanup(struct obd_device *obd)
2228 struct mds_obd *mds = &obd->u.mds;
2229 lvfs_sbdev_type save_dev;
2232 if (obd->u.obt.obt_sb == NULL)
2234 save_dev = lvfs_sbdev(obd->u.obt.obt_sb);
2236 if (mds->mds_osc_exp)
2237 /* lov export was disconnected by mds_lov_clean;
2238 we just need to drop our ref */
2239 class_export_put(mds->mds_osc_exp);
2241 lprocfs_obd_cleanup(obd);
2242 lprocfs_free_obd_stats(obd);
2244 lquota_cleanup(mds_quota_interface_ref, obd);
2246 mds_update_server_data(obd, 1);
2247 if (mds->mds_lov_objids != NULL)
2248 OBD_FREE(mds->mds_lov_objids, mds->mds_lov_objids_size);
2249 mds_fs_cleanup(obd);
2252 upcall_cache_cleanup(mds->mds_group_hash);
2253 mds->mds_group_hash = NULL;
2256 server_put_mount(obd->obd_name, mds->mds_vfsmnt);
2257 obd->u.obt.obt_sb = NULL;
2259 ldlm_namespace_free(obd->obd_namespace, obd->obd_force);
2261 spin_lock_bh(&obd->obd_processing_task_lock);
2262 if (obd->obd_recovering) {
2263 target_cancel_recovery_timer(obd);
2264 obd->obd_recovering = 0;
2266 spin_unlock_bh(&obd->obd_processing_task_lock);
2268 fsfilt_put_ops(obd->obd_fsops);
2270 LCONSOLE_INFO("MDT %s has stopped.\n", obd->obd_name);
2275 static void fixup_handle_for_resent_req(struct ptlrpc_request *req, int offset,
2276 struct ldlm_lock *new_lock,
2277 struct ldlm_lock **old_lock,
2278 struct lustre_handle *lockh)
2280 struct obd_export *exp = req->rq_export;
2281 struct ldlm_request *dlmreq =
2282 lustre_msg_buf(req->rq_reqmsg, offset, sizeof(*dlmreq));
2283 struct lustre_handle remote_hdl = dlmreq->lock_handle[0];
2284 struct list_head *iter;
2286 if (!(lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT))
2289 spin_lock(&exp->exp_ldlm_data.led_lock);
2290 list_for_each(iter, &exp->exp_ldlm_data.led_held_locks) {
2291 struct ldlm_lock *lock;
2292 lock = list_entry(iter, struct ldlm_lock, l_export_chain);
2293 if (lock == new_lock)
2295 if (lock->l_remote_handle.cookie == remote_hdl.cookie) {
2296 lockh->cookie = lock->l_handle.h_cookie;
2297 LDLM_DEBUG(lock, "restoring lock cookie");
2298 DEBUG_REQ(D_HA, req, "restoring lock cookie "LPX64,
2301 *old_lock = LDLM_LOCK_GET(lock);
2302 spin_unlock(&exp->exp_ldlm_data.led_lock);
2306 spin_unlock(&exp->exp_ldlm_data.led_lock);
2308 /* If the xid matches, then we know this is a resent request,
2309 * and allow it. (It's probably an OPEN, for which we don't
2312 le64_to_cpu(exp->exp_mds_data.med_mcd->mcd_last_xid))
2316 le64_to_cpu(exp->exp_mds_data.med_mcd->mcd_last_close_xid))
2319 /* This remote handle isn't enqueued, so we never received or
2320 * processed this request. Clear MSG_RESENT, because it can
2321 * be handled like any normal request now. */
2323 lustre_msg_clear_flags(req->rq_reqmsg, MSG_RESENT);
2325 DEBUG_REQ(D_HA, req, "no existing lock with rhandle "LPX64,
2329 int intent_disposition(struct ldlm_reply *rep, int flag)
2333 return (rep->lock_policy_res1 & flag);
2336 void intent_set_disposition(struct ldlm_reply *rep, int flag)
2340 rep->lock_policy_res1 |= flag;
2343 static int mds_intent_policy(struct ldlm_namespace *ns,
2344 struct ldlm_lock **lockp, void *req_cookie,
2345 ldlm_mode_t mode, int flags, void *data)
2347 struct ptlrpc_request *req = req_cookie;
2348 struct ldlm_lock *lock = *lockp;
2349 struct ldlm_intent *it;
2350 struct mds_obd *mds = &req->rq_export->exp_obd->u.mds;
2351 struct ldlm_reply *rep;
2352 struct lustre_handle lockh = { 0 };
2353 struct ldlm_lock *new_lock = NULL;
2354 int getattr_part = MDS_INODELOCK_UPDATE;
2355 int repsize[5] = { [MSG_PTLRPC_BODY_OFF] = sizeof(struct ptlrpc_body),
2356 [DLM_LOCKREPLY_OFF] = sizeof(struct ldlm_reply),
2357 [DLM_REPLY_REC_OFF] = sizeof(struct mds_body),
2358 [DLM_REPLY_REC_OFF+1] = mds->mds_max_mdsize };
2359 int repbufcnt = 4, rc;
2362 LASSERT(req != NULL);
2364 if (lustre_msg_bufcount(req->rq_reqmsg) <= DLM_INTENT_IT_OFF) {
2365 /* No intent was provided */
2366 rc = lustre_pack_reply(req, 2, repsize, NULL);
2371 it = lustre_swab_reqbuf(req, DLM_INTENT_IT_OFF, sizeof(*it),
2372 lustre_swab_ldlm_intent);
2374 CERROR("Intent missing\n");
2375 RETURN(req->rq_status = -EFAULT);
2378 LDLM_DEBUG(lock, "intent policy, opc: %s", ldlm_it2str(it->opc));
2380 if ((req->rq_export->exp_connect_flags & OBD_CONNECT_ACL) &&
2381 (it->opc & (IT_OPEN | IT_GETATTR | IT_LOOKUP)))
2382 /* we should never allow OBD_CONNECT_ACL if not configured */
2383 repsize[repbufcnt++] = LUSTRE_POSIX_ACL_MAX_SIZE;
2384 else if (it->opc & IT_UNLINK)
2385 repsize[repbufcnt++] = mds->mds_max_cookiesize;
2387 rc = lustre_pack_reply(req, repbufcnt, repsize, NULL);
2389 RETURN(req->rq_status = rc);
2391 rep = lustre_msg_buf(req->rq_repmsg, DLM_LOCKREPLY_OFF, sizeof(*rep));
2392 intent_set_disposition(rep, DISP_IT_EXECD);
2395 /* execute policy */
2396 switch ((long)it->opc) {
2398 case IT_CREAT|IT_OPEN:
2399 mds_counter_incr(req->rq_export, LPROC_MDS_OPEN);
2400 fixup_handle_for_resent_req(req, DLM_LOCKREQ_OFF, lock, NULL,
2402 /* XXX swab here to assert that an mds_open reint
2403 * packet is following */
2404 rep->lock_policy_res2 = mds_reint(req, DLM_INTENT_REC_OFF,
2407 /* We abort the lock if the lookup was negative and
2408 * we did not make it to the OPEN portion */
2409 if (!intent_disposition(rep, DISP_LOOKUP_EXECD))
2410 RETURN(ELDLM_LOCK_ABORTED);
2411 if (intent_disposition(rep, DISP_LOOKUP_NEG) &&
2412 !intent_disposition(rep, DISP_OPEN_OPEN))
2415 /* If there was an error of some sort or if we are not
2416 * returning any locks */
2417 if (rep->lock_policy_res2 ||
2418 !intent_disposition(rep, DISP_OPEN_LOCK))
2419 RETURN(ELDLM_LOCK_ABORTED);
2422 getattr_part = MDS_INODELOCK_LOOKUP;
2424 getattr_part |= MDS_INODELOCK_LOOKUP;
2425 OBD_COUNTER_INCREMENT(req->rq_export->exp_obd, getattr);
2427 fixup_handle_for_resent_req(req, DLM_LOCKREQ_OFF, lock,
2430 /* INODEBITS_INTEROP: if this lock was converted from a
2431 * plain lock (client does not support inodebits), then
2432 * child lock must be taken with both lookup and update
2433 * bits set for all operations.
2435 if (!(req->rq_export->exp_connect_flags & OBD_CONNECT_IBITS))
2436 getattr_part = MDS_INODELOCK_LOOKUP |
2437 MDS_INODELOCK_UPDATE;
2439 rep->lock_policy_res2 = mds_getattr_lock(req,DLM_INTENT_REC_OFF,
2440 getattr_part, &lockh);
2441 /* FIXME: LDLM can set req->rq_status. MDS sets
2442 policy_res{1,2} with disposition and status.
2443 - replay: returns 0 & req->status is old status
2444 - otherwise: returns req->status */
2445 if (intent_disposition(rep, DISP_LOOKUP_NEG))
2446 rep->lock_policy_res2 = 0;
2447 if (!intent_disposition(rep, DISP_LOOKUP_POS) ||
2448 rep->lock_policy_res2)
2449 RETURN(ELDLM_LOCK_ABORTED);
2450 if (req->rq_status != 0) {
2452 rep->lock_policy_res2 = req->rq_status;
2453 RETURN(ELDLM_LOCK_ABORTED);
2457 CERROR("Unhandled intent "LPD64"\n", it->opc);
2461 /* By this point, whatever function we called above must have either
2462 * filled in 'lockh', been an intent replay, or returned an error. We
2463 * want to allow replayed RPCs to not get a lock, since we would just
2464 * drop it below anyways because lock replay is done separately by the
2465 * client afterwards. For regular RPCs we want to give the new lock to
2466 * the client instead of whatever lock it was about to get. */
2467 if (new_lock == NULL)
2468 new_lock = ldlm_handle2lock(&lockh);
2469 if (new_lock == NULL && (flags & LDLM_FL_INTENT_ONLY))
2472 LASSERTF(new_lock != NULL, "op "LPX64" lockh "LPX64"\n",
2473 it->opc, lockh.cookie);
2475 /* If we've already given this lock to a client once, then we should
2476 * have no readers or writers. Otherwise, we should have one reader
2477 * _or_ writer ref (which will be zeroed below) before returning the
2478 * lock to a client. */
2479 if (new_lock->l_export == req->rq_export) {
2480 LASSERT(new_lock->l_readers + new_lock->l_writers == 0);
2482 LASSERT(new_lock->l_export == NULL);
2483 LASSERT(new_lock->l_readers + new_lock->l_writers == 1);
2488 if (new_lock->l_export == req->rq_export) {
2489 /* Already gave this to the client, which means that we
2490 * reconstructed a reply. */
2491 LASSERT(lustre_msg_get_flags(req->rq_reqmsg) &
2493 RETURN(ELDLM_LOCK_REPLACED);
2496 /* Fixup the lock to be given to the client */
2497 lock_res_and_lock(new_lock);
2498 new_lock->l_readers = 0;
2499 new_lock->l_writers = 0;
2501 new_lock->l_export = class_export_get(req->rq_export);
2502 spin_lock(&req->rq_export->exp_ldlm_data.led_lock);
2503 list_add(&new_lock->l_export_chain,
2504 &new_lock->l_export->exp_ldlm_data.led_held_locks);
2505 spin_unlock(&req->rq_export->exp_ldlm_data.led_lock);
2507 new_lock->l_blocking_ast = lock->l_blocking_ast;
2508 new_lock->l_completion_ast = lock->l_completion_ast;
2510 memcpy(&new_lock->l_remote_handle, &lock->l_remote_handle,
2511 sizeof(lock->l_remote_handle));
2513 new_lock->l_flags &= ~LDLM_FL_LOCAL;
2515 unlock_res_and_lock(new_lock);
2516 LDLM_LOCK_PUT(new_lock);
2518 RETURN(ELDLM_LOCK_REPLACED);
2521 static int mdt_setup(struct obd_device *obd, struct lustre_cfg *lcfg)
2523 struct mds_obd *mds = &obd->u.mds;
2524 struct lprocfs_static_vars lvars;
2525 int mds_min_threads;
2526 int mds_max_threads;
2530 lprocfs_init_vars(mdt, &lvars);
2531 lprocfs_obd_setup(obd, lvars.obd_vars);
2533 sema_init(&mds->mds_health_sem, 1);
2535 if (mds_num_threads) {
2536 /* If mds_num_threads is set, it is the min and the max. */
2537 if (mds_num_threads > MDS_THREADS_MAX)
2538 mds_num_threads = MDS_THREADS_MAX;
2539 if (mds_num_threads < MDS_THREADS_MIN)
2540 mds_num_threads = MDS_THREADS_MIN;
2541 mds_max_threads = mds_min_threads = mds_num_threads;
2543 /* Base min threads on memory and cpus */
2544 mds_min_threads = smp_num_cpus * num_physpages >>
2545 (27 - CFS_PAGE_SHIFT);
2546 if (mds_min_threads < MDS_THREADS_MIN)
2547 mds_min_threads = MDS_THREADS_MIN;
2548 /* Largest auto threads start value */
2549 if (mds_min_threads > 32)
2550 mds_min_threads = 32;
2551 mds_max_threads = min(MDS_THREADS_MAX, mds_min_threads * 4);
2555 ptlrpc_init_svc(MDS_NBUFS, MDS_BUFSIZE, MDS_MAXREQSIZE,
2556 MDS_MAXREPSIZE, MDS_REQUEST_PORTAL,
2557 MDC_REPLY_PORTAL, MDS_SERVICE_WATCHDOG_TIMEOUT,
2558 mds_handle, LUSTRE_MDS_NAME,
2559 obd->obd_proc_entry, NULL,
2560 mds_min_threads, mds_max_threads, "ll_mdt", 0);
2562 if (!mds->mds_service) {
2563 CERROR("failed to start service\n");
2564 GOTO(err_lprocfs, rc = -ENOMEM);
2567 rc = ptlrpc_start_threads(obd, mds->mds_service);
2569 GOTO(err_thread, rc);
2571 mds->mds_setattr_service =
2572 ptlrpc_init_svc(MDS_NBUFS, MDS_BUFSIZE, MDS_MAXREQSIZE,
2573 MDS_MAXREPSIZE, MDS_SETATTR_PORTAL,
2574 MDC_REPLY_PORTAL, MDS_SERVICE_WATCHDOG_TIMEOUT,
2575 mds_handle, "mds_setattr",
2576 obd->obd_proc_entry, NULL,
2577 mds_min_threads, mds_max_threads,
2579 if (!mds->mds_setattr_service) {
2580 CERROR("failed to start getattr service\n");
2581 GOTO(err_thread, rc = -ENOMEM);
2584 rc = ptlrpc_start_threads(obd, mds->mds_setattr_service);
2586 GOTO(err_thread2, rc);
2588 mds->mds_readpage_service =
2589 ptlrpc_init_svc(MDS_NBUFS, MDS_BUFSIZE, MDS_MAXREQSIZE,
2590 MDS_MAXREPSIZE, MDS_READPAGE_PORTAL,
2591 MDC_REPLY_PORTAL, MDS_SERVICE_WATCHDOG_TIMEOUT,
2592 mds_handle, "mds_readpage",
2593 obd->obd_proc_entry, NULL,
2594 MDS_THREADS_MIN_READPAGE, mds_max_threads,
2596 if (!mds->mds_readpage_service) {
2597 CERROR("failed to start readpage service\n");
2598 GOTO(err_thread2, rc = -ENOMEM);
2601 rc = ptlrpc_start_threads(obd, mds->mds_readpage_service);
2604 GOTO(err_thread3, rc);
2606 ping_evictor_start();
2611 ptlrpc_unregister_service(mds->mds_readpage_service);
2612 mds->mds_readpage_service = NULL;
2614 ptlrpc_unregister_service(mds->mds_setattr_service);
2615 mds->mds_setattr_service = NULL;
2617 ptlrpc_unregister_service(mds->mds_service);
2618 mds->mds_service = NULL;
2620 lprocfs_obd_cleanup(obd);
2624 static int mdt_cleanup(struct obd_device *obd)
2626 struct mds_obd *mds = &obd->u.mds;
2629 ping_evictor_stop();
2631 down(&mds->mds_health_sem);
2632 ptlrpc_unregister_service(mds->mds_readpage_service);
2633 ptlrpc_unregister_service(mds->mds_setattr_service);
2634 ptlrpc_unregister_service(mds->mds_service);
2635 mds->mds_readpage_service = NULL;
2636 mds->mds_setattr_service = NULL;
2637 mds->mds_service = NULL;
2638 up(&mds->mds_health_sem);
2640 lprocfs_obd_cleanup(obd);
2645 static int mdt_health_check(struct obd_device *obd)
2647 struct mds_obd *mds = &obd->u.mds;
2650 down(&mds->mds_health_sem);
2651 rc |= ptlrpc_service_health_check(mds->mds_readpage_service);
2652 rc |= ptlrpc_service_health_check(mds->mds_setattr_service);
2653 rc |= ptlrpc_service_health_check(mds->mds_service);
2654 up(&mds->mds_health_sem);
2657 * health_check to return 0 on healthy
2658 * and 1 on unhealthy.
2666 static struct dentry *mds_lvfs_fid2dentry(__u64 id, __u32 gen, __u64 gr,
2669 struct obd_device *obd = data;
2672 fid.generation = gen;
2673 return mds_fid2dentry(&obd->u.mds, &fid, NULL);
2676 static int mds_health_check(struct obd_device *obd)
2678 struct obd_device_target *odt = &obd->u.obt;
2679 #ifdef USE_HEALTH_CHECK_WRITE
2680 struct mds_obd *mds = &obd->u.mds;
2684 if (odt->obt_sb->s_flags & MS_RDONLY)
2687 #ifdef USE_HEALTH_CHECK_WRITE
2688 LASSERT(mds->mds_health_check_filp != NULL);
2689 rc |= !!lvfs_check_io_health(obd, mds->mds_health_check_filp);
2694 static int mds_process_config(struct obd_device *obd, obd_count len, void *buf)
2696 struct lustre_cfg *lcfg = buf;
2697 struct lprocfs_static_vars lvars;
2700 lprocfs_init_vars(mds, &lvars);
2702 rc = class_process_proc_param(PARAM_MDT, lvars.obd_vars, lcfg, obd);
2706 struct lvfs_callback_ops mds_lvfs_ops = {
2707 l_fid2dentry: mds_lvfs_fid2dentry,
2710 /* use obd ops to offer management infrastructure */
2711 static struct obd_ops mds_obd_ops = {
2712 .o_owner = THIS_MODULE,
2713 .o_connect = mds_connect,
2714 .o_reconnect = mds_reconnect,
2715 .o_init_export = mds_init_export,
2716 .o_destroy_export = mds_destroy_export,
2717 .o_disconnect = mds_disconnect,
2718 .o_setup = mds_setup,
2719 .o_precleanup = mds_precleanup,
2720 .o_cleanup = mds_cleanup,
2721 .o_postrecov = mds_postrecov,
2722 .o_statfs = mds_obd_statfs,
2723 .o_iocontrol = mds_iocontrol,
2724 .o_create = mds_obd_create,
2725 .o_destroy = mds_obd_destroy,
2726 .o_llog_init = mds_llog_init,
2727 .o_llog_finish = mds_llog_finish,
2728 .o_notify = mds_notify,
2729 .o_health_check = mds_health_check,
2730 .o_process_config = mds_process_config,
2733 static struct obd_ops mdt_obd_ops = {
2734 .o_owner = THIS_MODULE,
2735 .o_setup = mdt_setup,
2736 .o_cleanup = mdt_cleanup,
2737 .o_health_check = mdt_health_check,
2740 quota_interface_t *mds_quota_interface_ref;
2741 extern quota_interface_t mds_quota_interface;
2743 static __attribute__((unused)) int __init mds_init(void)
2746 struct lprocfs_static_vars lvars;
2748 request_module("lquota");
2749 mds_quota_interface_ref = PORTAL_SYMBOL_GET(mds_quota_interface);
2750 rc = lquota_init(mds_quota_interface_ref);
2752 if (mds_quota_interface_ref)
2753 PORTAL_SYMBOL_PUT(mds_quota_interface);
2756 init_obd_quota_ops(mds_quota_interface_ref, &mds_obd_ops);
2758 lprocfs_init_vars(mds, &lvars);
2759 class_register_type(&mds_obd_ops, NULL,
2760 lvars.module_vars, LUSTRE_MDS_NAME, NULL);
2761 lprocfs_init_vars(mdt, &lvars);
2762 mdt_obd_ops = mdt_obd_ops; //make compiler happy
2763 // class_register_type(&mdt_obd_ops, NULL,
2764 // lvars.module_vars, LUSTRE_MDT_NAME, NULL);
2769 static __attribute__((unused)) void /*__exit*/ mds_exit(void)
2771 lquota_exit(mds_quota_interface_ref);
2772 if (mds_quota_interface_ref)
2773 PORTAL_SYMBOL_PUT(mds_quota_interface);
2775 class_unregister_type(LUSTRE_MDS_NAME);
2776 // class_unregister_type(LUSTRE_MDT_NAME);
2778 /*mds still need lov setup here*/
2779 static int mds_cmd_setup(struct obd_device *obd, struct lustre_cfg *lcfg)
2781 struct mds_obd *mds = &obd->u.mds;
2782 struct lvfs_run_ctxt saved;
2784 struct vfsmount *mnt;
2785 struct lustre_sb_info *lsi;
2786 struct lustre_mount_info *lmi;
2787 struct dentry *dentry;
2792 CDEBUG(D_INFO, "obd %s setup \n", obd->obd_name);
2793 if (strncmp(obd->obd_name, MDD_OBD_NAME, strlen(MDD_OBD_NAME)))
2796 if (lcfg->lcfg_bufcount < 5) {
2797 CERROR("invalid arg for setup %s\n", MDD_OBD_NAME);
2800 dev = lustre_cfg_string(lcfg, 4);
2801 lmi = server_get_mount(dev);
2802 LASSERT(lmi != NULL);
2804 lsi = s2lsi(lmi->lmi_sb);
2806 /* FIXME: MDD LOV initialize objects.
2807 * we need only lmi here but not get mount
2808 * OSD did mount already, so put mount back
2810 atomic_dec(&lsi->lsi_mounts);
2813 obd->obd_fsops = fsfilt_get_ops(MT_STR(lsi->lsi_ldd));
2814 mds_init_ctxt(obd, mnt);
2816 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
2817 dentry = simple_mkdir(current->fs->pwd, "OBJECTS", 0777, 1);
2818 if (IS_ERR(dentry)) {
2819 rc = PTR_ERR(dentry);
2820 CERROR("cannot create OBJECTS directory: rc = %d\n", rc);
2821 GOTO(err_putfs, rc);
2823 mds->mds_objects_dir = dentry;
2825 dentry = lookup_one_len("__iopen__", current->fs->pwd,
2826 strlen("__iopen__"));
2827 if (IS_ERR(dentry)) {
2828 rc = PTR_ERR(dentry);
2829 CERROR("cannot lookup __iopen__ directory: rc = %d\n", rc);
2830 GOTO(err_objects, rc);
2833 mds->mds_fid_de = dentry;
2834 if (!dentry->d_inode || is_bad_inode(dentry->d_inode)) {
2836 CERROR("__iopen__ directory has no inode? rc = %d\n", rc);
2840 /* open and test the lov objd file */
2841 file = filp_open(LOV_OBJID, O_RDWR | O_CREAT, 0644);
2844 CERROR("cannot open/create %s file: rc = %d\n", LOV_OBJID, rc);
2845 GOTO(err_fid, rc = PTR_ERR(file));
2847 mds->mds_lov_objid_filp = file;
2848 if (!S_ISREG(file->f_dentry->d_inode->i_mode)) {
2849 CERROR("%s is not a regular file!: mode = %o\n", LOV_OBJID,
2850 file->f_dentry->d_inode->i_mode);
2851 GOTO(err_lov_objid, rc = -ENOENT);
2854 rc = mds_lov_presetup(mds, lcfg);
2856 GOTO(err_objects, rc);
2858 /* Don't wait for mds_postrecov trying to clear orphans */
2859 obd->obd_async_recov = 1;
2860 rc = mds_postsetup(obd);
2861 /* Bug 11557 - allow async abort_recov start
2862 FIXME can remove most of this obd_async_recov plumbing
2863 obd->obd_async_recov = 0;
2867 GOTO(err_objects, rc);
2869 mds->mds_max_mdsize = sizeof(struct lov_mds_md);
2870 mds->mds_max_cookiesize = sizeof(struct llog_cookie);
2873 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
2876 if (mds->mds_lov_objid_filp &&
2877 filp_close((struct file *)mds->mds_lov_objid_filp, 0))
2878 CERROR("can't close %s after error\n", LOV_OBJID);
2880 dput(mds->mds_fid_de);
2882 dput(mds->mds_objects_dir);
2884 fsfilt_put_ops(obd->obd_fsops);
2888 static int mds_cmd_cleanup(struct obd_device *obd)
2890 struct mds_obd *mds = &obd->u.mds;
2891 struct lvfs_run_ctxt saved;
2896 LCONSOLE_WARN("%s: shutting down for failover; client state "
2897 "will be preserved.\n", obd->obd_name);
2899 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
2900 if (mds->mds_lov_objid_filp) {
2901 rc = filp_close((struct file *)mds->mds_lov_objid_filp, 0);
2902 mds->mds_lov_objid_filp = NULL;
2904 CERROR("%s file won't close, rc=%d\n", LOV_OBJID, rc);
2906 if (mds->mds_objects_dir != NULL) {
2907 l_dput(mds->mds_objects_dir);
2908 mds->mds_objects_dir = NULL;
2911 if (mds->mds_lov_objids != NULL)
2912 OBD_FREE(mds->mds_lov_objids, mds->mds_lov_objids_size);
2914 shrink_dcache_parent(mds->mds_fid_de);
2915 dput(mds->mds_fid_de);
2916 LL_DQUOT_OFF(obd->u.obt.obt_sb);
2917 fsfilt_put_ops(obd->obd_fsops);
2919 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
2924 static int mds_cmd_health_check(struct obd_device *obd)
2929 static struct obd_ops mds_cmd_obd_ops = {
2930 .o_owner = THIS_MODULE,
2931 .o_setup = mds_cmd_setup,
2932 .o_cleanup = mds_cmd_cleanup,
2933 .o_precleanup = mds_precleanup,
2934 .o_create = mds_obd_create,
2935 .o_destroy = mds_obd_destroy,
2936 .o_llog_init = mds_llog_init,
2937 .o_llog_finish = mds_llog_finish,
2938 .o_notify = mds_notify,
2939 .o_postrecov = mds_postrecov,
2940 // .o_health_check = mds_cmd_health_check,
2943 static int __init mds_cmd_init(void)
2945 struct lprocfs_static_vars lvars;
2947 lprocfs_init_vars(mds, &lvars);
2948 class_register_type(&mds_cmd_obd_ops, NULL, lvars.module_vars,
2949 LUSTRE_MDS_NAME, NULL);
2954 static void /*__exit*/ mds_cmd_exit(void)
2956 class_unregister_type(LUSTRE_MDS_NAME);
2959 MODULE_AUTHOR("Cluster File Systems, Inc. <info@clusterfs.com>");
2960 MODULE_DESCRIPTION("Lustre Metadata Server (MDS)");
2961 MODULE_LICENSE("GPL");
2963 module_init(mds_cmd_init);
2964 module_exit(mds_cmd_exit);