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 OBD_PAGE_ALLOC(pages[i], 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 OBD_PAGE_FREE(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 OBD_FAIL_RETURN(OBD_FAIL_MDS_GETSTATUS_PACK, req->rq_status = -ENOMEM);
519 rc = lustre_pack_reply(req, 2, size, NULL);
521 RETURN(req->rq_status = rc);
523 body = lustre_msg_buf(req->rq_repmsg, REPLY_REC_OFF, sizeof(*body));
524 memcpy(&body->fid1, &mds->mds_rootfid, sizeof(body->fid1));
526 /* the last_committed and last_xid fields are filled in for all
527 * replies already - no need to do so here also.
532 /* get the LOV EA from @inode and store it into @md. It can be at most
533 * @size bytes, and @size is updated with the actual EA size.
534 * The EA size is also returned on success, and -ve errno on failure.
535 * If there is no EA then 0 is returned. */
536 int mds_get_md(struct obd_device *obd, struct inode *inode, void *md,
543 LOCK_INODE_MUTEX(inode);
544 rc = fsfilt_get_md(obd, inode, md, *size, "lov");
547 CERROR("Error %d reading eadata for ino %lu\n",
551 rc = mds_convert_lov_ea(obd, inode, md, lmm_size);
563 UNLOCK_INODE_MUTEX(inode);
569 /* Call with lock=1 if you want mds_pack_md to take the i_mutex.
570 * Call with lock=0 if the caller has already taken the i_mutex. */
571 int mds_pack_md(struct obd_device *obd, struct lustre_msg *msg, int offset,
572 struct mds_body *body, struct inode *inode, int lock)
574 struct mds_obd *mds = &obd->u.mds;
580 lmm = lustre_msg_buf(msg, offset, 0);
582 /* Some problem with getting eadata when I sized the reply
584 CDEBUG(D_INFO, "no space reserved for inode %lu MD\n",
588 lmm_size = lustre_msg_buflen(msg, offset);
590 /* I don't really like this, but it is a sanity check on the client
591 * MD request. However, if the client doesn't know how much space
592 * to reserve for the MD, it shouldn't be bad to have too much space.
594 if (lmm_size > mds->mds_max_mdsize) {
595 CWARN("Reading MD for inode %lu of %d bytes > max %d\n",
596 inode->i_ino, lmm_size, mds->mds_max_mdsize);
600 rc = mds_get_md(obd, inode, lmm, &lmm_size, lock);
602 if (S_ISDIR(inode->i_mode))
603 body->valid |= OBD_MD_FLDIREA;
605 body->valid |= OBD_MD_FLEASIZE;
606 body->eadatasize = lmm_size;
613 #ifdef CONFIG_FS_POSIX_ACL
615 int mds_pack_posix_acl(struct inode *inode, struct lustre_msg *repmsg,
616 struct mds_body *repbody, int repoff)
618 struct dentry de = { .d_inode = inode };
622 LASSERT(repbody->aclsize == 0);
623 LASSERT(lustre_msg_bufcount(repmsg) > repoff);
625 buflen = lustre_msg_buflen(repmsg, repoff);
629 if (!inode->i_op || !inode->i_op->getxattr)
632 rc = inode->i_op->getxattr(&de, MDS_XATTR_NAME_ACL_ACCESS,
633 lustre_msg_buf(repmsg, repoff, buflen),
637 repbody->aclsize = rc;
638 else if (rc != -ENODATA) {
639 CERROR("buflen %d, get acl: %d\n", buflen, rc);
644 repbody->valid |= OBD_MD_FLACL;
648 #define mds_pack_posix_acl(inode, repmsg, repbody, repoff) 0
651 int mds_pack_acl(struct mds_export_data *med, struct inode *inode,
652 struct lustre_msg *repmsg, struct mds_body *repbody,
655 return mds_pack_posix_acl(inode, repmsg, repbody, repoff);
658 static int mds_getattr_internal(struct obd_device *obd, struct dentry *dentry,
659 struct ptlrpc_request *req,
660 struct mds_body *reqbody, int reply_off)
662 struct mds_body *body;
663 struct inode *inode = dentry->d_inode;
670 body = lustre_msg_buf(req->rq_repmsg, reply_off, sizeof(*body));
671 LASSERT(body != NULL); /* caller prepped reply */
673 mds_pack_inode2fid(&body->fid1, inode);
674 body->flags = reqbody->flags; /* copy MDS_BFLAG_EXT_FLAGS if present */
675 mds_pack_inode2body(body, inode);
678 if ((S_ISREG(inode->i_mode) && (reqbody->valid & OBD_MD_FLEASIZE)) ||
679 (S_ISDIR(inode->i_mode) && (reqbody->valid & OBD_MD_FLDIREA))) {
680 rc = mds_pack_md(obd, req->rq_repmsg, reply_off, body,
683 /* If we have LOV EA data, the OST holds size, atime, mtime */
684 if (!(body->valid & OBD_MD_FLEASIZE) &&
685 !(body->valid & OBD_MD_FLDIREA))
686 body->valid |= (OBD_MD_FLSIZE | OBD_MD_FLBLOCKS |
687 OBD_MD_FLATIME | OBD_MD_FLMTIME);
689 lustre_shrink_reply(req, reply_off, body->eadatasize, 0);
690 if (body->eadatasize)
692 } else if (S_ISLNK(inode->i_mode) &&
693 (reqbody->valid & OBD_MD_LINKNAME) != 0) {
694 char *symname = lustre_msg_buf(req->rq_repmsg, reply_off, 0);
697 LASSERT (symname != NULL); /* caller prepped reply */
698 len = lustre_msg_buflen(req->rq_repmsg, reply_off);
700 rc = inode->i_op->readlink(dentry, symname, len);
702 CERROR("readlink failed: %d\n", rc);
703 } else if (rc != len - 1) {
704 CERROR ("Unexpected readlink rc %d: expecting %d\n",
708 CDEBUG(D_INODE, "read symlink dest %s\n", symname);
709 body->valid |= OBD_MD_LINKNAME;
710 body->eadatasize = rc + 1;
711 symname[rc] = 0; /* NULL terminate */
715 } else if (reqbody->valid == OBD_MD_FLFLAGS &&
716 reqbody->flags & MDS_BFLAG_EXT_FLAGS) {
719 /* We only return the full set of flags on ioctl, otherwise we
720 * get enough flags from the inode in mds_pack_inode2body(). */
721 rc = fsfilt_iocontrol(obd, inode, NULL, EXT3_IOC_GETFLAGS,
724 body->flags = flags | MDS_BFLAG_EXT_FLAGS;
727 if (reqbody->valid & OBD_MD_FLMODEASIZE) {
728 struct mds_obd *mds = mds_req2mds(req);
729 body->max_cookiesize = mds->mds_max_cookiesize;
730 body->max_mdsize = mds->mds_max_mdsize;
731 body->valid |= OBD_MD_FLMODEASIZE;
737 #ifdef CONFIG_FS_POSIX_ACL
738 if ((req->rq_export->exp_connect_flags & OBD_CONNECT_ACL) &&
739 (reqbody->valid & OBD_MD_FLACL)) {
740 rc = mds_pack_acl(&req->rq_export->exp_mds_data,
741 inode, req->rq_repmsg,
744 lustre_shrink_reply(req, reply_off, body->aclsize, 0);
753 static int mds_getattr_pack_msg(struct ptlrpc_request *req, struct inode *inode,
756 struct mds_obd *mds = mds_req2mds(req);
757 struct mds_body *body;
758 int rc, bufcount = 2;
759 int size[4] = { sizeof(struct ptlrpc_body), sizeof(*body) };
762 LASSERT(offset == REQ_REC_OFF); /* non-intent */
764 body = lustre_msg_buf(req->rq_reqmsg, offset, sizeof(*body));
765 LASSERT(body != NULL); /* checked by caller */
766 LASSERT(lustre_req_swabbed(req, offset)); /* swabbed by caller */
768 if ((S_ISREG(inode->i_mode) && (body->valid & OBD_MD_FLEASIZE)) ||
769 (S_ISDIR(inode->i_mode) && (body->valid & OBD_MD_FLDIREA))) {
770 LOCK_INODE_MUTEX(inode);
771 rc = fsfilt_get_md(req->rq_export->exp_obd, inode, NULL, 0,
773 UNLOCK_INODE_MUTEX(inode);
774 CDEBUG(D_INODE, "got %d bytes MD data for inode %lu\n",
777 if (rc != -ENODATA) {
778 CERROR("error getting inode %lu MD: rc = %d\n",
783 } else if (rc > mds->mds_max_mdsize) {
785 CERROR("MD size %d larger than maximum possible %u\n",
786 rc, mds->mds_max_mdsize);
791 } else if (S_ISLNK(inode->i_mode) && (body->valid & OBD_MD_LINKNAME)) {
792 if (i_size_read(inode) + 1 != body->eadatasize)
793 CERROR("symlink size: %Lu, reply space: %d\n",
794 i_size_read(inode) + 1, body->eadatasize);
795 size[bufcount] = min_t(int, i_size_read(inode) + 1,
798 CDEBUG(D_INODE, "symlink size: %Lu, reply space: %d\n",
799 i_size_read(inode) + 1, body->eadatasize);
802 #ifdef CONFIG_FS_POSIX_ACL
803 if ((req->rq_export->exp_connect_flags & OBD_CONNECT_ACL) &&
804 (body->valid & OBD_MD_FLACL)) {
805 struct dentry de = { .d_inode = inode };
808 if (inode->i_op && inode->i_op->getxattr) {
809 rc = inode->i_op->getxattr(&de, MDS_XATTR_NAME_ACL_ACCESS,
813 if (rc != -ENODATA) {
814 CERROR("got acl size: %d\n", rc);
824 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_GETATTR_PACK)) {
825 CERROR("failed MDS_GETATTR_PACK test\n");
826 req->rq_status = -ENOMEM;
830 rc = lustre_pack_reply(req, bufcount, size, NULL);
839 static int mds_getattr_lock(struct ptlrpc_request *req, int offset,
840 int child_part, struct lustre_handle *child_lockh)
842 struct obd_device *obd = req->rq_export->exp_obd;
843 struct mds_obd *mds = &obd->u.mds;
844 struct ldlm_reply *rep = NULL;
845 struct lvfs_run_ctxt saved;
846 struct mds_body *body;
847 struct dentry *dparent = NULL, *dchild = NULL;
848 struct lvfs_ucred uc = {0,};
849 struct lustre_handle parent_lockh;
851 int rc = 0, cleanup_phase = 0, resent_req = 0;
855 LASSERT(!strcmp(obd->obd_type->typ_name, LUSTRE_MDS_NAME));
857 /* Swab now, before anyone looks inside the request */
858 body = lustre_swab_reqbuf(req, offset, sizeof(*body),
859 lustre_swab_mds_body);
861 CERROR("Can't swab mds_body\n");
865 lustre_set_req_swabbed(req, offset + 1);
866 name = lustre_msg_string(req->rq_reqmsg, offset + 1, 0);
868 CERROR("Can't unpack name\n");
871 namesize = lustre_msg_buflen(req->rq_reqmsg, offset + 1);
872 /* namesize less than 2 means we have empty name, probably came from
873 revalidate by cfid, so no point in having name to be set */
877 rc = mds_init_ucred(&uc, req, offset);
881 LASSERT(offset == REQ_REC_OFF || offset == DLM_INTENT_REC_OFF);
882 /* if requests were at offset 2, the getattr reply goes back at 1 */
883 if (offset == DLM_INTENT_REC_OFF) {
884 rep = lustre_msg_buf(req->rq_repmsg, DLM_LOCKREPLY_OFF,
886 offset = DLM_REPLY_REC_OFF;
889 push_ctxt(&saved, &obd->obd_lvfs_ctxt, &uc);
890 cleanup_phase = 1; /* kernel context */
891 intent_set_disposition(rep, DISP_LOOKUP_EXECD);
893 /* FIXME: handle raw lookup */
895 if (body->valid == OBD_MD_FLID) {
896 struct mds_body *mds_reply;
897 int size = sizeof(*mds_reply);
899 // The user requested ONLY the inode number, so do a raw lookup
900 rc = lustre_pack_reply(req, 1, &size, NULL);
902 CERROR("out of memory\n");
906 rc = dir->i_op->lookup_raw(dir, name, namesize - 1, &inum);
908 mds_reply = lustre_msg_buf(req->rq_repmsg, offset,
910 mds_reply->fid1.id = inum;
911 mds_reply->valid = OBD_MD_FLID;
916 if (lustre_handle_is_used(child_lockh)) {
917 LASSERT(lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT);
921 if (resent_req == 0) {
923 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_RESEND, obd_timeout * 2);
924 rc = mds_get_parent_child_locked(obd, &obd->u.mds,
928 MDS_INODELOCK_UPDATE,
930 child_lockh, &dchild,
933 /* For revalidate by fid we always take UPDATE lock */
934 dchild = mds_fid2locked_dentry(obd, &body->fid2, NULL,
939 rc = PTR_ERR(dchild);
944 struct ldlm_lock *granted_lock;
945 struct ll_fid child_fid;
946 struct ldlm_resource *res;
947 DEBUG_REQ(D_DLMTRACE, req, "resent, not enqueuing new locks");
948 granted_lock = ldlm_handle2lock(child_lockh);
949 LASSERTF(granted_lock != NULL, LPU64"/%u lockh "LPX64"\n",
950 body->fid1.id, body->fid1.generation,
951 child_lockh->cookie);
954 res = granted_lock->l_resource;
955 child_fid.id = res->lr_name.name[0];
956 child_fid.generation = res->lr_name.name[1];
957 dchild = mds_fid2dentry(&obd->u.mds, &child_fid, NULL);
958 LASSERT(!IS_ERR(dchild));
959 LDLM_LOCK_PUT(granted_lock);
962 cleanup_phase = 2; /* dchild, dparent, locks */
964 if (dchild->d_inode == NULL) {
965 intent_set_disposition(rep, DISP_LOOKUP_NEG);
966 /* in the intent case, the policy clears this error:
967 the disposition is enough */
968 GOTO(cleanup, rc = -ENOENT);
970 intent_set_disposition(rep, DISP_LOOKUP_POS);
973 if (req->rq_repmsg == NULL) {
974 rc = mds_getattr_pack_msg(req, dchild->d_inode, offset);
976 CERROR ("mds_getattr_pack_msg: %d\n", rc);
981 rc = mds_getattr_internal(obd, dchild, req, body, offset);
982 GOTO(cleanup, rc); /* returns the lock to the client */
985 switch (cleanup_phase) {
987 if (resent_req == 0) {
988 if (rc && dchild->d_inode)
989 ldlm_lock_decref(child_lockh, LCK_CR);
991 ldlm_lock_decref(&parent_lockh, LCK_CR);
997 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, &uc);
999 mds_exit_ucred(&uc, mds);
1000 if (req->rq_reply_state == NULL) {
1001 int rc2 = lustre_pack_reply(req, 1, NULL, NULL);
1004 req->rq_status = rc;
1010 static int mds_getattr(struct ptlrpc_request *req, int offset)
1012 struct mds_obd *mds = mds_req2mds(req);
1013 struct obd_device *obd = req->rq_export->exp_obd;
1014 struct lvfs_run_ctxt saved;
1016 struct mds_body *body;
1017 struct lvfs_ucred uc = {0,};
1021 OBD_COUNTER_INCREMENT(obd, getattr);
1023 body = lustre_swab_reqbuf(req, offset, sizeof(*body),
1024 lustre_swab_mds_body);
1028 rc = mds_init_ucred(&uc, req, offset);
1030 GOTO(out_ucred, rc);
1032 push_ctxt(&saved, &obd->obd_lvfs_ctxt, &uc);
1033 de = mds_fid2dentry(mds, &body->fid1, NULL);
1035 rc = req->rq_status = PTR_ERR(de);
1039 rc = mds_getattr_pack_msg(req, de->d_inode, offset);
1041 CERROR("mds_getattr_pack_msg: %d\n", rc);
1045 req->rq_status = mds_getattr_internal(obd, de, req, body,
1051 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, &uc);
1053 if (req->rq_reply_state == NULL) {
1054 int rc2 = lustre_pack_reply(req, 1, NULL, NULL);
1057 req->rq_status = rc;
1059 mds_exit_ucred(&uc, mds);
1063 static int mds_obd_statfs(struct obd_device *obd, struct obd_statfs *osfs,
1068 spin_lock(&obd->obd_osfs_lock);
1069 rc = fsfilt_statfs(obd, obd->u.obt.obt_sb, max_age);
1071 memcpy(osfs, &obd->obd_osfs, sizeof(*osfs));
1072 spin_unlock(&obd->obd_osfs_lock);
1077 static int mds_statfs(struct ptlrpc_request *req)
1079 struct obd_device *obd = req->rq_export->exp_obd;
1080 int rc, size[2] = { sizeof(struct ptlrpc_body),
1081 sizeof(struct obd_statfs) };
1084 /* This will trigger a watchdog timeout */
1085 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_STATFS_LCW_SLEEP,
1086 (MDS_SERVICE_WATCHDOG_TIMEOUT / 1000) + 1);
1087 OBD_COUNTER_INCREMENT(obd, statfs);
1089 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_STATFS_PACK))
1090 GOTO(out, rc = -ENOMEM);
1091 rc = lustre_pack_reply(req, 2, size, NULL);
1095 /* We call this so that we can cache a bit - 1 jiffie worth */
1096 rc = mds_obd_statfs(obd, lustre_msg_buf(req->rq_repmsg, REPLY_REC_OFF,
1097 size[REPLY_REC_OFF]),
1098 cfs_time_current_64() - HZ);
1100 CERROR("mds_obd_statfs failed: rc %d\n", rc);
1106 req->rq_status = rc;
1110 static int mds_sync(struct ptlrpc_request *req, int offset)
1112 struct obd_device *obd = req->rq_export->exp_obd;
1113 struct mds_obd *mds = &obd->u.mds;
1114 struct mds_body *body;
1115 int rc, size[2] = { sizeof(struct ptlrpc_body), sizeof(*body) };
1118 body = lustre_swab_reqbuf(req, offset, sizeof(*body),
1119 lustre_swab_mds_body);
1121 GOTO(out, rc = -EFAULT);
1123 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_SYNC_PACK))
1124 GOTO(out, rc = -ENOMEM);
1125 rc = lustre_pack_reply(req, 2, size, NULL);
1129 if (body->fid1.id == 0) {
1130 /* a fid of zero is taken to mean "sync whole filesystem" */
1131 rc = fsfilt_sync(obd, obd->u.obt.obt_sb);
1136 de = mds_fid2dentry(mds, &body->fid1, NULL);
1138 GOTO(out, rc = PTR_ERR(de));
1140 /* The file parameter isn't used for anything */
1141 if (de->d_inode->i_fop && de->d_inode->i_fop->fsync)
1142 rc = de->d_inode->i_fop->fsync(NULL, de, 1);
1144 body = lustre_msg_buf(req->rq_repmsg, REPLY_REC_OFF,
1146 mds_pack_inode2fid(&body->fid1, de->d_inode);
1147 mds_pack_inode2body(body, de->d_inode);
1154 req->rq_status = rc;
1158 /* mds_readpage does not take a DLM lock on the inode, because the client must
1159 * already have a PR lock.
1161 * If we were to take another one here, a deadlock will result, if another
1162 * thread is already waiting for a PW lock. */
1163 static int mds_readpage(struct ptlrpc_request *req, int offset)
1165 struct obd_device *obd = req->rq_export->exp_obd;
1166 struct mds_obd *mds = &obd->u.mds;
1167 struct vfsmount *mnt;
1170 struct mds_body *body, *repbody;
1171 struct lvfs_run_ctxt saved;
1172 int rc, size[2] = { sizeof(struct ptlrpc_body), sizeof(*repbody) };
1173 struct lvfs_ucred uc = {0,};
1176 OBD_FAIL_RETURN(OBD_FAIL_MDS_READPAGE_PACK, -ENOMEM);
1177 rc = lustre_pack_reply(req, 2, size, NULL);
1181 body = lustre_swab_reqbuf(req, offset, sizeof(*body),
1182 lustre_swab_mds_body);
1184 GOTO (out, rc = -EFAULT);
1186 rc = mds_init_ucred(&uc, req, offset);
1190 push_ctxt(&saved, &obd->obd_lvfs_ctxt, &uc);
1191 de = mds_fid2dentry(&obd->u.mds, &body->fid1, &mnt);
1193 GOTO(out_pop, rc = PTR_ERR(de));
1195 CDEBUG(D_INODE, "ino %lu\n", de->d_inode->i_ino);
1197 file = dentry_open(de, mnt, O_RDONLY | O_LARGEFILE);
1198 /* note: in case of an error, dentry_open puts dentry */
1200 GOTO(out_pop, rc = PTR_ERR(file));
1202 /* body->size is actually the offset -eeb */
1203 if ((body->size & (de->d_inode->i_sb->s_blocksize - 1)) != 0) {
1204 CERROR("offset "LPU64" not on a block boundary of %lu\n",
1205 body->size, de->d_inode->i_sb->s_blocksize);
1206 GOTO(out_file, rc = -EFAULT);
1209 /* body->nlink is actually the #bytes to read -eeb */
1210 if (body->nlink & (de->d_inode->i_sb->s_blocksize - 1)) {
1211 CERROR("size %u is not multiple of blocksize %lu\n",
1212 body->nlink, de->d_inode->i_sb->s_blocksize);
1213 GOTO(out_file, rc = -EFAULT);
1216 repbody = lustre_msg_buf(req->rq_repmsg, REPLY_REC_OFF,
1218 repbody->size = i_size_read(file->f_dentry->d_inode);
1219 repbody->valid = OBD_MD_FLSIZE;
1221 /* to make this asynchronous make sure that the handling function
1222 doesn't send a reply when this function completes. Instead a
1223 callback function would send the reply */
1224 /* body->size is actually the offset -eeb */
1225 rc = mds_sendpage(req, file, body->size, body->nlink);
1228 filp_close(file, 0);
1230 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, &uc);
1232 mds_exit_ucred(&uc, mds);
1233 req->rq_status = rc;
1237 int mds_reint(struct ptlrpc_request *req, int offset,
1238 struct lustre_handle *lockh)
1240 struct mds_update_record *rec; /* 116 bytes on the stack? no sir! */
1243 OBD_ALLOC(rec, sizeof(*rec));
1247 rc = mds_update_unpack(req, offset, rec);
1248 if (rc || OBD_FAIL_CHECK(OBD_FAIL_MDS_REINT_UNPACK)) {
1249 CERROR("invalid record\n");
1250 GOTO(out, req->rq_status = -EINVAL);
1253 /* rc will be used to interrupt a for loop over multiple records */
1254 rc = mds_reint_rec(rec, offset, req, lockh);
1256 OBD_FREE(rec, sizeof(*rec));
1260 int mds_filter_recovery_request(struct ptlrpc_request *req,
1261 struct obd_device *obd, int *process)
1263 switch (lustre_msg_get_opc(req->rq_reqmsg)) {
1264 case MDS_CONNECT: /* This will never get here, but for completeness. */
1265 case OST_CONNECT: /* This will never get here, but for completeness. */
1266 case MDS_DISCONNECT:
1267 case OST_DISCONNECT:
1272 case MDS_DONE_WRITING:
1273 case MDS_SYNC: /* used in unmounting */
1279 *process = target_queue_recovery_request(req, obd);
1283 DEBUG_REQ(D_ERROR, req, "not permitted during recovery");
1288 EXPORT_SYMBOL(mds_filter_recovery_request);
1290 static char *reint_names[] = {
1291 [REINT_SETATTR] "setattr",
1292 [REINT_CREATE] "create",
1293 [REINT_LINK] "link",
1294 [REINT_UNLINK] "unlink",
1295 [REINT_RENAME] "rename",
1296 [REINT_OPEN] "open",
1299 static int mds_set_info_rpc(struct obd_export *exp, struct ptlrpc_request *req)
1302 int keylen, vallen, rc = 0;
1305 key = lustre_msg_buf(req->rq_reqmsg, REQ_REC_OFF, 1);
1307 DEBUG_REQ(D_HA, req, "no set_info key");
1310 keylen = lustre_msg_buflen(req->rq_reqmsg, REQ_REC_OFF);
1312 val = lustre_msg_buf(req->rq_reqmsg, REQ_REC_OFF + 1, 0);
1313 vallen = lustre_msg_buflen(req->rq_reqmsg, REQ_REC_OFF + 1);
1315 rc = lustre_pack_reply(req, 1, NULL, NULL);
1319 lustre_msg_set_status(req->rq_repmsg, 0);
1321 if (KEY_IS("read-only")) {
1322 if (val == NULL || vallen < sizeof(__u32)) {
1323 DEBUG_REQ(D_HA, req, "no set_info val");
1328 exp->exp_connect_flags |= OBD_CONNECT_RDONLY;
1330 exp->exp_connect_flags &= ~OBD_CONNECT_RDONLY;
1338 static int mds_handle_quotacheck(struct ptlrpc_request *req)
1340 struct obd_quotactl *oqctl;
1344 oqctl = lustre_swab_reqbuf(req, REQ_REC_OFF, sizeof(*oqctl),
1345 lustre_swab_obd_quotactl);
1349 rc = lustre_pack_reply(req, 1, NULL, NULL);
1353 req->rq_status = obd_quotacheck(req->rq_export, oqctl);
1357 static int mds_handle_quotactl(struct ptlrpc_request *req)
1359 struct obd_quotactl *oqctl, *repoqc;
1360 int rc, size[2] = { sizeof(struct ptlrpc_body), sizeof(*repoqc) };
1363 oqctl = lustre_swab_reqbuf(req, REQ_REC_OFF, sizeof(*oqctl),
1364 lustre_swab_obd_quotactl);
1368 rc = lustre_pack_reply(req, 2, size, NULL);
1372 repoqc = lustre_msg_buf(req->rq_repmsg, REPLY_REC_OFF, sizeof(*repoqc));
1374 req->rq_status = obd_quotactl(req->rq_export, oqctl);
1379 int mds_msg_check_version(struct lustre_msg *msg)
1383 switch (lustre_msg_get_opc(msg)) {
1385 case MDS_DISCONNECT:
1388 case SEC_CTX_INIT_CONT:
1390 rc = lustre_msg_check_version(msg, LUSTRE_OBD_VERSION);
1392 CERROR("bad opc %u version %08x, expecting %08x\n",
1393 lustre_msg_get_opc(msg),
1394 lustre_msg_get_version(msg),
1395 LUSTRE_OBD_VERSION);
1399 case MDS_GETATTR_NAME:
1406 case MDS_DONE_WRITING:
1412 case MDS_QUOTACHECK:
1418 rc = lustre_msg_check_version(msg, LUSTRE_MDS_VERSION);
1420 CERROR("bad opc %u version %08x, expecting %08x\n",
1421 lustre_msg_get_opc(msg),
1422 lustre_msg_get_version(msg),
1423 LUSTRE_MDS_VERSION);
1427 case LDLM_BL_CALLBACK:
1428 case LDLM_CP_CALLBACK:
1429 rc = lustre_msg_check_version(msg, LUSTRE_DLM_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_DLM_VERSION);
1436 case OBD_LOG_CANCEL:
1437 case LLOG_ORIGIN_HANDLE_CREATE:
1438 case LLOG_ORIGIN_HANDLE_NEXT_BLOCK:
1439 case LLOG_ORIGIN_HANDLE_READ_HEADER:
1440 case LLOG_ORIGIN_HANDLE_CLOSE:
1441 case LLOG_ORIGIN_HANDLE_DESTROY:
1442 case LLOG_ORIGIN_HANDLE_PREV_BLOCK:
1444 rc = lustre_msg_check_version(msg, LUSTRE_LOG_VERSION);
1446 CERROR("bad opc %u version %08x, expecting %08x\n",
1447 lustre_msg_get_opc(msg),
1448 lustre_msg_get_version(msg),
1449 LUSTRE_LOG_VERSION);
1452 CERROR("MDS unknown opcode %d\n", lustre_msg_get_opc(msg));
1457 EXPORT_SYMBOL(mds_msg_check_version);
1459 int mds_handle(struct ptlrpc_request *req)
1461 int should_process, fail = OBD_FAIL_MDS_ALL_REPLY_NET;
1463 struct mds_obd *mds = NULL; /* quell gcc overwarning */
1464 struct obd_device *obd = NULL;
1467 OBD_FAIL_RETURN(OBD_FAIL_MDS_ALL_REQUEST_NET | OBD_FAIL_ONCE, 0);
1469 LASSERT(current->journal_info == NULL);
1471 rc = mds_msg_check_version(req->rq_reqmsg);
1473 CERROR("MDS drop mal-formed request\n");
1477 /* XXX identical to OST */
1478 if (lustre_msg_get_opc(req->rq_reqmsg) != MDS_CONNECT) {
1479 struct mds_export_data *med;
1482 if (req->rq_export == NULL) {
1483 CERROR("operation %d on unconnected MDS from %s\n",
1484 lustre_msg_get_opc(req->rq_reqmsg),
1485 libcfs_id2str(req->rq_peer));
1486 req->rq_status = -ENOTCONN;
1487 GOTO(out, rc = -ENOTCONN);
1490 med = &req->rq_export->exp_mds_data;
1491 obd = req->rq_export->exp_obd;
1492 mds = mds_req2mds(req);
1494 /* sanity check: if the xid matches, the request must
1495 * be marked as a resent or replayed */
1496 if (req->rq_xid == le64_to_cpu(med->med_mcd->mcd_last_xid) ||
1497 req->rq_xid == le64_to_cpu(med->med_mcd->mcd_last_close_xid))
1498 if (!(lustre_msg_get_flags(req->rq_reqmsg) &
1499 (MSG_RESENT | MSG_REPLAY))) {
1500 CERROR("rq_xid "LPU64" matches last_xid, "
1501 "expected RESENT flag\n",
1503 req->rq_status = -ENOTCONN;
1504 GOTO(out, rc = -EFAULT);
1506 /* else: note the opposite is not always true; a
1507 * RESENT req after a failover will usually not match
1508 * the last_xid, since it was likely never
1509 * committed. A REPLAYed request will almost never
1510 * match the last xid, however it could for a
1511 * committed, but still retained, open. */
1513 /* Check for aborted recovery. */
1514 spin_lock_bh(&obd->obd_processing_task_lock);
1515 recovering = obd->obd_recovering;
1516 spin_unlock_bh(&obd->obd_processing_task_lock);
1518 rc = mds_filter_recovery_request(req, obd,
1520 if (rc || !should_process)
1522 else if (should_process < 0) {
1523 req->rq_status = should_process;
1524 rc = ptlrpc_error(req);
1530 switch (lustre_msg_get_opc(req->rq_reqmsg)) {
1532 DEBUG_REQ(D_INODE, req, "connect");
1533 OBD_FAIL_RETURN(OBD_FAIL_MDS_CONNECT_NET, 0);
1534 rc = target_handle_connect(req);
1536 /* Now that we have an export, set mds. */
1538 * XXX nikita: these assignments are useless: mds is
1539 * never used below, and obd is only used for
1540 * MSG_LAST_REPLAY case, which never happens for
1543 obd = req->rq_export->exp_obd;
1544 mds = mds_req2mds(req);
1548 case MDS_DISCONNECT:
1549 DEBUG_REQ(D_INODE, req, "disconnect");
1550 OBD_FAIL_RETURN(OBD_FAIL_MDS_DISCONNECT_NET, 0);
1551 rc = target_handle_disconnect(req);
1552 req->rq_status = rc; /* superfluous? */
1556 DEBUG_REQ(D_INODE, req, "getstatus");
1557 OBD_FAIL_RETURN(OBD_FAIL_MDS_GETSTATUS_NET, 0);
1558 rc = mds_getstatus(req);
1562 DEBUG_REQ(D_INODE, req, "getattr");
1563 OBD_FAIL_RETURN(OBD_FAIL_MDS_GETATTR_NET, 0);
1564 rc = mds_getattr(req, REQ_REC_OFF);
1568 DEBUG_REQ(D_INODE, req, "setxattr");
1569 OBD_FAIL_RETURN(OBD_FAIL_MDS_SETXATTR_NET, 0);
1570 rc = mds_setxattr(req);
1574 DEBUG_REQ(D_INODE, req, "getxattr");
1575 OBD_FAIL_RETURN(OBD_FAIL_MDS_GETXATTR_NET, 0);
1576 rc = mds_getxattr(req);
1579 case MDS_GETATTR_NAME: {
1580 struct lustre_handle lockh = { 0 };
1581 DEBUG_REQ(D_INODE, req, "getattr_name");
1582 OBD_FAIL_RETURN(OBD_FAIL_MDS_GETATTR_NAME_NET, 0);
1584 /* If this request gets a reconstructed reply, we won't be
1585 * acquiring any new locks in mds_getattr_lock, so we don't
1588 rc = mds_getattr_lock(req, REQ_REC_OFF, MDS_INODELOCK_UPDATE,
1590 /* this non-intent call (from an ioctl) is special */
1591 req->rq_status = rc;
1592 if (rc == 0 && lustre_handle_is_used(&lockh))
1593 ldlm_lock_decref(&lockh, LCK_CR);
1597 DEBUG_REQ(D_INODE, req, "statfs");
1598 OBD_FAIL_RETURN(OBD_FAIL_MDS_STATFS_NET, 0);
1599 rc = mds_statfs(req);
1603 DEBUG_REQ(D_INODE, req, "readpage");
1604 OBD_FAIL_RETURN(OBD_FAIL_MDS_READPAGE_NET, 0);
1605 rc = mds_readpage(req, REQ_REC_OFF);
1607 if (OBD_FAIL_CHECK_ONCE(OBD_FAIL_MDS_SENDPAGE)) {
1614 __u32 *opcp = lustre_msg_buf(req->rq_reqmsg, REQ_REC_OFF,
1617 int size[4] = { sizeof(struct ptlrpc_body),
1618 sizeof(struct mds_body),
1619 mds->mds_max_mdsize,
1620 mds->mds_max_cookiesize };
1623 /* NB only peek inside req now; mds_reint() will swab it */
1625 CERROR ("Can't inspect opcode\n");
1630 if (lustre_msg_swabbed(req->rq_reqmsg))
1633 DEBUG_REQ(D_INODE, req, "reint %d (%s)", opc,
1634 (opc < sizeof(reint_names) / sizeof(reint_names[0]) ||
1635 reint_names[opc] == NULL) ? reint_names[opc] :
1638 OBD_FAIL_RETURN(OBD_FAIL_MDS_REINT_NET, 0);
1640 if (opc == REINT_UNLINK || opc == REINT_RENAME)
1642 else if (opc == REINT_OPEN)
1647 rc = lustre_pack_reply(req, bufcount, size, NULL);
1651 rc = mds_reint(req, REQ_REC_OFF, NULL);
1652 fail = OBD_FAIL_MDS_REINT_NET_REP;
1657 DEBUG_REQ(D_INODE, req, "close");
1658 OBD_FAIL_RETURN(OBD_FAIL_MDS_CLOSE_NET, 0);
1659 rc = mds_close(req, REQ_REC_OFF);
1662 case MDS_DONE_WRITING:
1663 DEBUG_REQ(D_INODE, req, "done_writing");
1664 OBD_FAIL_RETURN(OBD_FAIL_MDS_DONE_WRITING_NET, 0);
1665 rc = mds_done_writing(req, REQ_REC_OFF);
1669 DEBUG_REQ(D_INODE, req, "pin");
1670 OBD_FAIL_RETURN(OBD_FAIL_MDS_PIN_NET, 0);
1671 rc = mds_pin(req, REQ_REC_OFF);
1675 DEBUG_REQ(D_INODE, req, "sync");
1676 OBD_FAIL_RETURN(OBD_FAIL_MDS_SYNC_NET, 0);
1677 rc = mds_sync(req, REQ_REC_OFF);
1681 DEBUG_REQ(D_INODE, req, "set_info");
1682 rc = mds_set_info_rpc(req->rq_export, req);
1685 case MDS_QUOTACHECK:
1686 DEBUG_REQ(D_INODE, req, "quotacheck");
1687 OBD_FAIL_RETURN(OBD_FAIL_MDS_QUOTACHECK_NET, 0);
1688 rc = mds_handle_quotacheck(req);
1692 DEBUG_REQ(D_INODE, req, "quotactl");
1693 OBD_FAIL_RETURN(OBD_FAIL_MDS_QUOTACTL_NET, 0);
1694 rc = mds_handle_quotactl(req);
1698 DEBUG_REQ(D_INODE, req, "ping");
1699 rc = target_handle_ping(req);
1702 case OBD_LOG_CANCEL:
1703 CDEBUG(D_INODE, "log cancel\n");
1704 OBD_FAIL_RETURN(OBD_FAIL_OBD_LOG_CANCEL_NET, 0);
1705 rc = -ENOTSUPP; /* la la la */
1709 DEBUG_REQ(D_INODE, req, "enqueue");
1710 OBD_FAIL_RETURN(OBD_FAIL_LDLM_ENQUEUE, 0);
1711 rc = ldlm_handle_enqueue(req, ldlm_server_completion_ast,
1712 ldlm_server_blocking_ast, NULL);
1713 fail = OBD_FAIL_LDLM_REPLY;
1716 DEBUG_REQ(D_INODE, req, "convert");
1717 OBD_FAIL_RETURN(OBD_FAIL_LDLM_CONVERT, 0);
1718 rc = ldlm_handle_convert(req);
1720 case LDLM_BL_CALLBACK:
1721 case LDLM_CP_CALLBACK:
1722 DEBUG_REQ(D_INODE, req, "callback");
1723 CERROR("callbacks should not happen on MDS\n");
1725 OBD_FAIL_RETURN(OBD_FAIL_LDLM_BL_CALLBACK, 0);
1727 case LLOG_ORIGIN_HANDLE_CREATE:
1728 DEBUG_REQ(D_INODE, req, "llog_init");
1729 OBD_FAIL_RETURN(OBD_FAIL_OBD_LOGD_NET, 0);
1730 rc = llog_origin_handle_create(req);
1732 case LLOG_ORIGIN_HANDLE_DESTROY:
1733 DEBUG_REQ(D_INODE, req, "llog_init");
1734 OBD_FAIL_RETURN(OBD_FAIL_OBD_LOGD_NET, 0);
1735 rc = llog_origin_handle_destroy(req);
1737 case LLOG_ORIGIN_HANDLE_NEXT_BLOCK:
1738 DEBUG_REQ(D_INODE, req, "llog next block");
1739 OBD_FAIL_RETURN(OBD_FAIL_OBD_LOGD_NET, 0);
1740 rc = llog_origin_handle_next_block(req);
1742 case LLOG_ORIGIN_HANDLE_PREV_BLOCK:
1743 DEBUG_REQ(D_INODE, req, "llog prev block");
1744 OBD_FAIL_RETURN(OBD_FAIL_OBD_LOGD_NET, 0);
1745 rc = llog_origin_handle_prev_block(req);
1747 case LLOG_ORIGIN_HANDLE_READ_HEADER:
1748 DEBUG_REQ(D_INODE, req, "llog read header");
1749 OBD_FAIL_RETURN(OBD_FAIL_OBD_LOGD_NET, 0);
1750 rc = llog_origin_handle_read_header(req);
1752 case LLOG_ORIGIN_HANDLE_CLOSE:
1753 DEBUG_REQ(D_INODE, req, "llog close");
1754 OBD_FAIL_RETURN(OBD_FAIL_OBD_LOGD_NET, 0);
1755 rc = llog_origin_handle_close(req);
1758 DEBUG_REQ(D_INODE, req, "llog catinfo");
1759 OBD_FAIL_RETURN(OBD_FAIL_OBD_LOGD_NET, 0);
1760 rc = llog_catinfo(req);
1763 req->rq_status = -ENOTSUPP;
1764 rc = ptlrpc_error(req);
1768 LASSERT(current->journal_info == NULL);
1770 /* If we're DISCONNECTing, the mds_export_data is already freed */
1771 if (!rc && lustre_msg_get_opc(req->rq_reqmsg) != MDS_DISCONNECT) {
1772 struct mds_export_data *med = &req->rq_export->exp_mds_data;
1774 /* I don't think last_xid is used for anyway, so I'm not sure
1775 if we need to care about last_close_xid here.*/
1776 lustre_msg_set_last_xid(req->rq_repmsg,
1777 le64_to_cpu(med->med_mcd->mcd_last_xid));
1779 target_committed_to_req(req);
1785 target_send_reply(req, rc, fail);
1789 /* Update the server data on disk. This stores the new mount_count and
1790 * also the last_rcvd value to disk. If we don't have a clean shutdown,
1791 * then the server last_rcvd value may be less than that of the clients.
1792 * This will alert us that we may need to do client recovery.
1794 * Also assumes for mds_last_transno that we are not modifying it (no locking).
1796 int mds_update_server_data(struct obd_device *obd, int force_sync)
1798 struct mds_obd *mds = &obd->u.mds;
1799 struct lr_server_data *lsd = mds->mds_server_data;
1800 struct file *filp = mds->mds_rcvd_filp;
1801 struct lvfs_run_ctxt saved;
1806 CDEBUG(D_SUPER, "MDS mount_count is "LPU64", last_transno is "LPU64"\n",
1807 mds->mds_mount_count, mds->mds_last_transno);
1809 spin_lock(&mds->mds_transno_lock);
1810 lsd->lsd_last_transno = cpu_to_le64(mds->mds_last_transno);
1811 spin_unlock(&mds->mds_transno_lock);
1813 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
1814 rc = fsfilt_write_record(obd, filp, lsd, sizeof(*lsd), &off,force_sync);
1815 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
1817 CERROR("error writing MDS server data: rc = %d\n", rc);
1821 static void fsoptions_to_mds_flags(struct mds_obd *mds, char *options)
1831 while (*p && *p != ',')
1835 if (len == sizeof("user_xattr") - 1 &&
1836 memcmp(options, "user_xattr", len) == 0) {
1837 mds->mds_fl_user_xattr = 1;
1838 LCONSOLE_INFO("Enabling user_xattr\n");
1839 } else if (len == sizeof("nouser_xattr") - 1 &&
1840 memcmp(options, "nouser_xattr", len) == 0) {
1841 mds->mds_fl_user_xattr = 0;
1842 LCONSOLE_INFO("Disabling user_xattr\n");
1843 } else if (len == sizeof("acl") - 1 &&
1844 memcmp(options, "acl", len) == 0) {
1845 #ifdef CONFIG_FS_POSIX_ACL
1846 mds->mds_fl_acl = 1;
1847 LCONSOLE_INFO("Enabling ACL\n");
1849 CWARN("ignoring unsupported acl mount option\n");
1851 } else if (len == sizeof("noacl") - 1 &&
1852 memcmp(options, "noacl", len) == 0) {
1853 #ifdef CONFIG_FS_POSIX_ACL
1854 mds->mds_fl_acl = 0;
1855 LCONSOLE_INFO("Disabling ACL\n");
1862 static int mds_lov_presetup (struct mds_obd *mds, struct lustre_cfg *lcfg)
1867 rc = llog_start_commit_thread();
1871 if (lcfg->lcfg_bufcount >= 4 && LUSTRE_CFG_BUFLEN(lcfg, 3) > 0) {
1874 ll_generate_random_uuid(uuid);
1875 class_uuid_unparse(uuid, &mds->mds_lov_uuid);
1877 OBD_ALLOC(mds->mds_profile, LUSTRE_CFG_BUFLEN(lcfg, 3));
1878 if (mds->mds_profile == NULL)
1881 strncpy(mds->mds_profile, lustre_cfg_string(lcfg, 3),
1882 LUSTRE_CFG_BUFLEN(lcfg, 3));
1887 /* mount the file system (secretly). lustre_cfg parameters are:
1893 static int mds_setup(struct obd_device *obd, struct lustre_cfg* lcfg)
1895 struct lprocfs_static_vars lvars;
1896 struct mds_obd *mds = &obd->u.mds;
1897 struct lustre_mount_info *lmi;
1898 struct vfsmount *mnt;
1899 struct lustre_sb_info *lsi;
1900 struct obd_uuid uuid;
1907 /* setup 1:/dev/loop/0 2:ext3 3:mdsA 4:errors=remount-ro,iopen_nopriv */
1909 CLASSERT(offsetof(struct obd_device, u.obt) ==
1910 offsetof(struct obd_device, u.mds.mds_obt));
1912 if (lcfg->lcfg_bufcount < 3)
1915 if (LUSTRE_CFG_BUFLEN(lcfg, 1) == 0 || LUSTRE_CFG_BUFLEN(lcfg, 2) == 0)
1918 lmi = server_get_mount(obd->obd_name);
1920 CERROR("Not mounted in lustre_fill_super?\n");
1924 /* We mounted in lustre_fill_super.
1925 lcfg bufs 1, 2, 4 (device, fstype, mount opts) are ignored.*/
1927 lsi = s2lsi(lmi->lmi_sb);
1928 fsoptions_to_mds_flags(mds, lsi->lsi_ldd->ldd_mount_opts);
1929 fsoptions_to_mds_flags(mds, lsi->lsi_lmd->lmd_opts);
1931 obd->obd_fsops = fsfilt_get_ops(MT_STR(lsi->lsi_ldd));
1932 if (IS_ERR(obd->obd_fsops))
1933 GOTO(err_put, rc = PTR_ERR(obd->obd_fsops));
1935 CDEBUG(D_SUPER, "%s: mnt = %p\n", lustre_cfg_string(lcfg, 1), mnt);
1937 LASSERT(!lvfs_check_rdonly(lvfs_sbdev(mnt->mnt_sb)));
1939 sema_init(&mds->mds_epoch_sem, 1);
1940 spin_lock_init(&mds->mds_transno_lock);
1941 mds->mds_max_mdsize = sizeof(struct lov_mds_md);
1942 mds->mds_max_cookiesize = sizeof(struct llog_cookie);
1943 mds->mds_atime_diff = MAX_ATIME_DIFF;
1944 mds->mds_evict_ost_nids = 1;
1946 sprintf(ns_name, "mds-%s", obd->obd_uuid.uuid);
1947 obd->obd_namespace = ldlm_namespace_new(ns_name, LDLM_NAMESPACE_SERVER,
1948 LDLM_NAMESPACE_GREEDY);
1949 if (obd->obd_namespace == NULL) {
1951 GOTO(err_ops, rc = -ENOMEM);
1953 ldlm_register_intent(obd->obd_namespace, mds_intent_policy);
1955 lprocfs_init_vars(mds, &lvars);
1956 if (lprocfs_obd_setup(obd, lvars.obd_vars) == 0 &&
1957 lprocfs_alloc_obd_stats(obd, LPROC_MDS_LAST) == 0) {
1958 /* Init private stats here */
1959 mds_stats_counter_init(obd->obd_stats);
1960 obd->obd_proc_exports = proc_mkdir("exports",
1961 obd->obd_proc_entry);
1964 rc = mds_fs_setup(obd, mnt);
1966 CERROR("%s: MDS filesystem method init failed: rc = %d\n",
1971 rc = mds_lov_presetup(mds, lcfg);
1975 ptlrpc_init_client(LDLM_CB_REQUEST_PORTAL, LDLM_CB_REPLY_PORTAL,
1976 "mds_ldlm_client", &obd->obd_ldlm_client);
1977 obd->obd_replayable = 1;
1979 rc = lquota_setup(mds_quota_interface_ref, obd);
1984 mds->mds_group_hash = upcall_cache_init(obd->obd_name);
1985 if (IS_ERR(mds->mds_group_hash)) {
1986 rc = PTR_ERR(mds->mds_group_hash);
1987 mds->mds_group_hash = NULL;
1988 GOTO(err_qctxt, rc);
1992 /* Don't wait for mds_postrecov trying to clear orphans */
1993 obd->obd_async_recov = 1;
1994 rc = mds_postsetup(obd);
1995 /* Bug 11557 - allow async abort_recov start
1996 FIXME can remove most of this obd_async_recov plumbing
1997 obd->obd_async_recov = 0;
2000 GOTO(err_qctxt, rc);
2002 uuid_ptr = fsfilt_uuid(obd, obd->u.obt.obt_sb);
2003 if (uuid_ptr != NULL) {
2004 class_uuid_unparse(uuid_ptr, &uuid);
2010 label = fsfilt_get_label(obd, obd->u.obt.obt_sb);
2011 if (obd->obd_recovering) {
2012 LCONSOLE_WARN("MDT %s now serving %s (%s%s%s), but will be in "
2013 "recovery until %d %s reconnect, or if no clients"
2014 " reconnect for %d:%.02d; during that time new "
2015 "clients will not be allowed to connect. "
2016 "Recovery progress can be monitored by watching "
2017 "/proc/fs/lustre/mds/%s/recovery_status.\n",
2018 obd->obd_name, lustre_cfg_string(lcfg, 1),
2019 label ?: "", label ? "/" : "", str,
2020 obd->obd_max_recoverable_clients,
2021 (obd->obd_max_recoverable_clients == 1) ?
2022 "client" : "clients",
2023 (int)(OBD_RECOVERY_TIMEOUT) / 60,
2024 (int)(OBD_RECOVERY_TIMEOUT) % 60,
2027 LCONSOLE_INFO("MDT %s now serving %s (%s%s%s) with recovery "
2028 "%s\n", obd->obd_name, lustre_cfg_string(lcfg, 1),
2029 label ?: "", label ? "/" : "", str,
2030 obd->obd_replayable ? "enabled" : "disabled");
2033 if (ldlm_timeout == LDLM_TIMEOUT_DEFAULT)
2039 lquota_cleanup(mds_quota_interface_ref, obd);
2041 /* No extra cleanup needed for llog_init_commit_thread() */
2042 mds_fs_cleanup(obd);
2044 upcall_cache_cleanup(mds->mds_group_hash);
2045 mds->mds_group_hash = NULL;
2048 lprocfs_obd_cleanup(obd);
2049 lprocfs_free_obd_stats(obd);
2050 ldlm_namespace_free(obd->obd_namespace, 0);
2051 obd->obd_namespace = NULL;
2053 fsfilt_put_ops(obd->obd_fsops);
2055 server_put_mount(obd->obd_name, mnt);
2056 obd->u.obt.obt_sb = NULL;
2060 static int mds_lov_clean(struct obd_device *obd)
2062 struct mds_obd *mds = &obd->u.mds;
2063 struct obd_device *osc = mds->mds_osc_obd;
2066 if (mds->mds_profile) {
2067 class_del_profile(mds->mds_profile);
2068 OBD_FREE(mds->mds_profile, strlen(mds->mds_profile) + 1);
2069 mds->mds_profile = NULL;
2072 /* There better be a lov */
2076 RETURN(PTR_ERR(osc));
2078 obd_register_observer(osc, NULL);
2080 /* Give lov our same shutdown flags */
2081 osc->obd_force = obd->obd_force;
2082 osc->obd_fail = obd->obd_fail;
2084 /* Cleanup the lov */
2085 obd_disconnect(mds->mds_osc_exp);
2086 class_manual_cleanup(osc);
2087 mds->mds_osc_exp = NULL;
2092 static int mds_postsetup(struct obd_device *obd)
2094 struct mds_obd *mds = &obd->u.mds;
2098 rc = llog_setup(obd, NULL, LLOG_CONFIG_ORIG_CTXT, obd, 0, NULL,
2103 rc = llog_setup(obd, NULL, LLOG_LOVEA_ORIG_CTXT, obd, 0, NULL,
2108 if (mds->mds_profile) {
2109 struct lustre_profile *lprof;
2110 /* The profile defines which osc and mdc to connect to, for a
2111 client. We reuse that here to figure out the name of the
2112 lov to use (and ignore lprof->lp_md).
2113 The profile was set in the config log with
2114 LCFG_MOUNTOPT profilenm oscnm mdcnm */
2115 lprof = class_get_profile(mds->mds_profile);
2116 if (lprof == NULL) {
2117 CERROR("No profile found: %s\n", mds->mds_profile);
2118 GOTO(err_cleanup, rc = -ENOENT);
2120 rc = mds_lov_connect(obd, lprof->lp_dt);
2122 GOTO(err_cleanup, rc);
2129 llog_cleanup(llog_get_context(obd, LLOG_CONFIG_ORIG_CTXT));
2130 llog_cleanup(llog_get_context(obd, LLOG_LOVEA_ORIG_CTXT));
2134 int mds_postrecov(struct obd_device *obd)
2142 LASSERT(!obd->obd_recovering);
2143 LASSERT(llog_get_context(obd, LLOG_MDS_OST_ORIG_CTXT) != NULL);
2145 /* set nextid first, so we are sure it happens */
2146 mutex_down(&obd->obd_dev_sem);
2147 rc = mds_lov_set_nextid(obd);
2148 mutex_up(&obd->obd_dev_sem);
2150 CERROR("%s: mds_lov_set_nextid failed %d\n",
2155 /* clean PENDING dir */
2156 if (strncmp(obd->obd_name, MDD_OBD_NAME, strlen(MDD_OBD_NAME)))
2157 rc = mds_cleanup_pending(obd);
2161 /* FIXME Does target_finish_recovery really need this to block? */
2162 /* Notify the LOV, which will in turn call mds_notify for each tgt */
2163 /* This means that we have to hack obd_notify to think we're obd_set_up
2164 during mds_lov_connect. */
2165 obd_notify(obd->u.mds.mds_osc_obd, NULL,
2166 obd->obd_async_recov ? OBD_NOTIFY_SYNC_NONBLOCK :
2167 OBD_NOTIFY_SYNC, NULL);
2169 /* quota recovery */
2170 lquota_recovery(mds_quota_interface_ref, obd);
2176 /* We need to be able to stop an mds_lov_synchronize */
2177 static int mds_lov_early_clean(struct obd_device *obd)
2179 struct mds_obd *mds = &obd->u.mds;
2180 struct obd_device *osc = mds->mds_osc_obd;
2182 if (!osc || (!obd->obd_force && !obd->obd_fail))
2185 CDEBUG(D_HA, "abort inflight\n");
2186 return (obd_precleanup(osc, OBD_CLEANUP_EARLY));
2189 static int mds_precleanup(struct obd_device *obd, enum obd_cleanup_stage stage)
2195 case OBD_CLEANUP_EARLY:
2197 case OBD_CLEANUP_EXPORTS:
2198 /*XXX Use this for mdd mds cleanup, so comment out
2199 *this target_cleanup_recovery for this tmp MDD MDS
2201 if (strncmp(obd->obd_name, MDD_OBD_NAME, strlen(MDD_OBD_NAME)))
2202 target_cleanup_recovery(obd);
2203 mds_lov_early_clean(obd);
2205 case OBD_CLEANUP_SELF_EXP:
2206 mds_lov_disconnect(obd);
2208 llog_cleanup(llog_get_context(obd, LLOG_CONFIG_ORIG_CTXT));
2209 llog_cleanup(llog_get_context(obd, LLOG_LOVEA_ORIG_CTXT));
2210 rc = obd_llog_finish(obd, 0);
2212 case OBD_CLEANUP_OBD:
2218 static int mds_cleanup(struct obd_device *obd)
2220 struct mds_obd *mds = &obd->u.mds;
2221 lvfs_sbdev_type save_dev;
2224 if (obd->u.obt.obt_sb == NULL)
2226 save_dev = lvfs_sbdev(obd->u.obt.obt_sb);
2228 if (mds->mds_osc_exp)
2229 /* lov export was disconnected by mds_lov_clean;
2230 we just need to drop our ref */
2231 class_export_put(mds->mds_osc_exp);
2233 lprocfs_obd_cleanup(obd);
2234 lprocfs_free_obd_stats(obd);
2236 lquota_cleanup(mds_quota_interface_ref, obd);
2238 mds_update_server_data(obd, 1);
2239 if (mds->mds_lov_objids != NULL)
2240 OBD_FREE(mds->mds_lov_objids, mds->mds_lov_objids_size);
2241 mds_fs_cleanup(obd);
2244 upcall_cache_cleanup(mds->mds_group_hash);
2245 mds->mds_group_hash = NULL;
2248 server_put_mount(obd->obd_name, mds->mds_vfsmnt);
2249 obd->u.obt.obt_sb = NULL;
2251 ldlm_namespace_free(obd->obd_namespace, obd->obd_force);
2253 spin_lock_bh(&obd->obd_processing_task_lock);
2254 if (obd->obd_recovering) {
2255 target_cancel_recovery_timer(obd);
2256 obd->obd_recovering = 0;
2258 spin_unlock_bh(&obd->obd_processing_task_lock);
2260 fsfilt_put_ops(obd->obd_fsops);
2262 LCONSOLE_INFO("MDT %s has stopped.\n", obd->obd_name);
2267 static void fixup_handle_for_resent_req(struct ptlrpc_request *req, int offset,
2268 struct ldlm_lock *new_lock,
2269 struct ldlm_lock **old_lock,
2270 struct lustre_handle *lockh)
2272 struct obd_export *exp = req->rq_export;
2273 struct ldlm_request *dlmreq =
2274 lustre_msg_buf(req->rq_reqmsg, offset, sizeof(*dlmreq));
2275 struct lustre_handle remote_hdl = dlmreq->lock_handle[0];
2276 struct list_head *iter;
2278 if (!(lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT))
2281 spin_lock(&exp->exp_ldlm_data.led_lock);
2282 list_for_each(iter, &exp->exp_ldlm_data.led_held_locks) {
2283 struct ldlm_lock *lock;
2284 lock = list_entry(iter, struct ldlm_lock, l_export_chain);
2285 if (lock == new_lock)
2287 if (lock->l_remote_handle.cookie == remote_hdl.cookie) {
2288 lockh->cookie = lock->l_handle.h_cookie;
2289 LDLM_DEBUG(lock, "restoring lock cookie");
2290 DEBUG_REQ(D_DLMTRACE, req,"restoring lock cookie "LPX64,
2293 *old_lock = LDLM_LOCK_GET(lock);
2294 spin_unlock(&exp->exp_ldlm_data.led_lock);
2298 spin_unlock(&exp->exp_ldlm_data.led_lock);
2300 /* If the xid matches, then we know this is a resent request,
2301 * and allow it. (It's probably an OPEN, for which we don't
2304 le64_to_cpu(exp->exp_mds_data.med_mcd->mcd_last_xid))
2308 le64_to_cpu(exp->exp_mds_data.med_mcd->mcd_last_close_xid))
2311 /* This remote handle isn't enqueued, so we never received or
2312 * processed this request. Clear MSG_RESENT, because it can
2313 * be handled like any normal request now. */
2315 lustre_msg_clear_flags(req->rq_reqmsg, MSG_RESENT);
2317 DEBUG_REQ(D_DLMTRACE, req, "no existing lock with rhandle "LPX64,
2321 int intent_disposition(struct ldlm_reply *rep, int flag)
2325 return (rep->lock_policy_res1 & flag);
2328 void intent_set_disposition(struct ldlm_reply *rep, int flag)
2332 rep->lock_policy_res1 |= flag;
2335 static int mds_intent_policy(struct ldlm_namespace *ns,
2336 struct ldlm_lock **lockp, void *req_cookie,
2337 ldlm_mode_t mode, int flags, void *data)
2339 struct ptlrpc_request *req = req_cookie;
2340 struct ldlm_lock *lock = *lockp;
2341 struct ldlm_intent *it;
2342 struct mds_obd *mds = &req->rq_export->exp_obd->u.mds;
2343 struct ldlm_reply *rep;
2344 struct lustre_handle lockh = { 0 };
2345 struct ldlm_lock *new_lock = NULL;
2346 int getattr_part = MDS_INODELOCK_UPDATE;
2347 int repsize[5] = { [MSG_PTLRPC_BODY_OFF] = sizeof(struct ptlrpc_body),
2348 [DLM_LOCKREPLY_OFF] = sizeof(struct ldlm_reply),
2349 [DLM_REPLY_REC_OFF] = sizeof(struct mds_body),
2350 [DLM_REPLY_REC_OFF+1] = mds->mds_max_mdsize };
2351 int repbufcnt = 4, rc;
2354 LASSERT(req != NULL);
2356 if (lustre_msg_bufcount(req->rq_reqmsg) <= DLM_INTENT_IT_OFF) {
2357 /* No intent was provided */
2358 rc = lustre_pack_reply(req, 2, repsize, NULL);
2364 it = lustre_swab_reqbuf(req, DLM_INTENT_IT_OFF, sizeof(*it),
2365 lustre_swab_ldlm_intent);
2367 CERROR("Intent missing\n");
2368 RETURN(req->rq_status = -EFAULT);
2371 LDLM_DEBUG(lock, "intent policy, opc: %s", ldlm_it2str(it->opc));
2373 if ((req->rq_export->exp_connect_flags & OBD_CONNECT_ACL) &&
2374 (it->opc & (IT_OPEN | IT_GETATTR | IT_LOOKUP)))
2375 /* we should never allow OBD_CONNECT_ACL if not configured */
2376 repsize[repbufcnt++] = LUSTRE_POSIX_ACL_MAX_SIZE;
2377 else if (it->opc & IT_UNLINK)
2378 repsize[repbufcnt++] = mds->mds_max_cookiesize;
2380 rc = lustre_pack_reply(req, repbufcnt, repsize, NULL);
2382 RETURN(req->rq_status = rc);
2384 rep = lustre_msg_buf(req->rq_repmsg, DLM_LOCKREPLY_OFF, sizeof(*rep));
2385 intent_set_disposition(rep, DISP_IT_EXECD);
2388 /* execute policy */
2389 switch ((long)it->opc) {
2391 case IT_CREAT|IT_OPEN:
2392 mds_counter_incr(req->rq_export, LPROC_MDS_OPEN);
2393 fixup_handle_for_resent_req(req, DLM_LOCKREQ_OFF, lock, NULL,
2395 /* XXX swab here to assert that an mds_open reint
2396 * packet is following */
2397 rep->lock_policy_res2 = mds_reint(req, DLM_INTENT_REC_OFF,
2400 /* We abort the lock if the lookup was negative and
2401 * we did not make it to the OPEN portion */
2402 if (!intent_disposition(rep, DISP_LOOKUP_EXECD))
2403 RETURN(ELDLM_LOCK_ABORTED);
2404 if (intent_disposition(rep, DISP_LOOKUP_NEG) &&
2405 !intent_disposition(rep, DISP_OPEN_OPEN))
2408 /* If there was an error of some sort or if we are not
2409 * returning any locks */
2410 if (rep->lock_policy_res2 ||
2411 !intent_disposition(rep, DISP_OPEN_LOCK))
2412 RETURN(ELDLM_LOCK_ABORTED);
2415 getattr_part = MDS_INODELOCK_LOOKUP;
2417 getattr_part |= MDS_INODELOCK_LOOKUP;
2418 OBD_COUNTER_INCREMENT(req->rq_export->exp_obd, getattr);
2420 fixup_handle_for_resent_req(req, DLM_LOCKREQ_OFF, lock,
2423 /* INODEBITS_INTEROP: if this lock was converted from a
2424 * plain lock (client does not support inodebits), then
2425 * child lock must be taken with both lookup and update
2426 * bits set for all operations.
2428 if (!(req->rq_export->exp_connect_flags & OBD_CONNECT_IBITS))
2429 getattr_part = MDS_INODELOCK_LOOKUP |
2430 MDS_INODELOCK_UPDATE;
2432 rep->lock_policy_res2 = mds_getattr_lock(req,DLM_INTENT_REC_OFF,
2433 getattr_part, &lockh);
2434 /* FIXME: LDLM can set req->rq_status. MDS sets
2435 policy_res{1,2} with disposition and status.
2436 - replay: returns 0 & req->status is old status
2437 - otherwise: returns req->status */
2438 if (intent_disposition(rep, DISP_LOOKUP_NEG))
2439 rep->lock_policy_res2 = 0;
2440 if (!intent_disposition(rep, DISP_LOOKUP_POS) ||
2441 rep->lock_policy_res2)
2442 RETURN(ELDLM_LOCK_ABORTED);
2443 if (req->rq_status != 0) {
2445 rep->lock_policy_res2 = req->rq_status;
2446 RETURN(ELDLM_LOCK_ABORTED);
2450 CERROR("Unhandled intent "LPD64"\n", it->opc);
2454 /* By this point, whatever function we called above must have either
2455 * filled in 'lockh', been an intent replay, or returned an error. We
2456 * want to allow replayed RPCs to not get a lock, since we would just
2457 * drop it below anyways because lock replay is done separately by the
2458 * client afterwards. For regular RPCs we want to give the new lock to
2459 * the client instead of whatever lock it was about to get. */
2460 if (new_lock == NULL)
2461 new_lock = ldlm_handle2lock(&lockh);
2462 if (new_lock == NULL && (flags & LDLM_FL_INTENT_ONLY))
2465 LASSERTF(new_lock != NULL, "op "LPX64" lockh "LPX64"\n",
2466 it->opc, lockh.cookie);
2468 /* If we've already given this lock to a client once, then we should
2469 * have no readers or writers. Otherwise, we should have one reader
2470 * _or_ writer ref (which will be zeroed below) before returning the
2471 * lock to a client. */
2472 if (new_lock->l_export == req->rq_export) {
2473 LASSERT(new_lock->l_readers + new_lock->l_writers == 0);
2475 LASSERT(new_lock->l_export == NULL);
2476 LASSERT(new_lock->l_readers + new_lock->l_writers == 1);
2481 if (new_lock->l_export == req->rq_export) {
2482 /* Already gave this to the client, which means that we
2483 * reconstructed a reply. */
2484 LASSERT(lustre_msg_get_flags(req->rq_reqmsg) &
2486 RETURN(ELDLM_LOCK_REPLACED);
2489 /* Fixup the lock to be given to the client */
2490 lock_res_and_lock(new_lock);
2491 new_lock->l_readers = 0;
2492 new_lock->l_writers = 0;
2494 new_lock->l_export = class_export_get(req->rq_export);
2495 spin_lock(&req->rq_export->exp_ldlm_data.led_lock);
2496 list_add(&new_lock->l_export_chain,
2497 &new_lock->l_export->exp_ldlm_data.led_held_locks);
2498 spin_unlock(&req->rq_export->exp_ldlm_data.led_lock);
2500 new_lock->l_blocking_ast = lock->l_blocking_ast;
2501 new_lock->l_completion_ast = lock->l_completion_ast;
2503 memcpy(&new_lock->l_remote_handle, &lock->l_remote_handle,
2504 sizeof(lock->l_remote_handle));
2506 new_lock->l_flags &= ~LDLM_FL_LOCAL;
2508 unlock_res_and_lock(new_lock);
2509 LDLM_LOCK_PUT(new_lock);
2511 RETURN(ELDLM_LOCK_REPLACED);
2514 static int mdt_setup(struct obd_device *obd, struct lustre_cfg *lcfg)
2516 struct mds_obd *mds = &obd->u.mds;
2517 struct lprocfs_static_vars lvars;
2518 int mds_min_threads;
2519 int mds_max_threads;
2523 lprocfs_init_vars(mdt, &lvars);
2524 lprocfs_obd_setup(obd, lvars.obd_vars);
2526 sema_init(&mds->mds_health_sem, 1);
2528 if (mds_num_threads) {
2529 /* If mds_num_threads is set, it is the min and the max. */
2530 if (mds_num_threads > MDS_THREADS_MAX)
2531 mds_num_threads = MDS_THREADS_MAX;
2532 if (mds_num_threads < MDS_THREADS_MIN)
2533 mds_num_threads = MDS_THREADS_MIN;
2534 mds_max_threads = mds_min_threads = mds_num_threads;
2536 /* Base min threads on memory and cpus */
2537 mds_min_threads = num_possible_cpus() * num_physpages >>
2538 (27 - CFS_PAGE_SHIFT);
2539 if (mds_min_threads < MDS_THREADS_MIN)
2540 mds_min_threads = MDS_THREADS_MIN;
2541 /* Largest auto threads start value */
2542 if (mds_min_threads > 32)
2543 mds_min_threads = 32;
2544 mds_max_threads = min(MDS_THREADS_MAX, mds_min_threads * 4);
2548 ptlrpc_init_svc(MDS_NBUFS, MDS_BUFSIZE, MDS_MAXREQSIZE,
2549 MDS_MAXREPSIZE, MDS_REQUEST_PORTAL,
2550 MDC_REPLY_PORTAL, MDS_SERVICE_WATCHDOG_TIMEOUT,
2551 mds_handle, LUSTRE_MDS_NAME,
2552 obd->obd_proc_entry, NULL,
2553 mds_min_threads, mds_max_threads, "ll_mdt", 0);
2555 if (!mds->mds_service) {
2556 CERROR("failed to start service\n");
2557 GOTO(err_lprocfs, rc = -ENOMEM);
2560 rc = ptlrpc_start_threads(obd, mds->mds_service);
2562 GOTO(err_thread, rc);
2564 mds->mds_setattr_service =
2565 ptlrpc_init_svc(MDS_NBUFS, MDS_BUFSIZE, MDS_MAXREQSIZE,
2566 MDS_MAXREPSIZE, MDS_SETATTR_PORTAL,
2567 MDC_REPLY_PORTAL, MDS_SERVICE_WATCHDOG_TIMEOUT,
2568 mds_handle, "mds_setattr",
2569 obd->obd_proc_entry, NULL,
2570 mds_min_threads, mds_max_threads,
2572 if (!mds->mds_setattr_service) {
2573 CERROR("failed to start getattr service\n");
2574 GOTO(err_thread, rc = -ENOMEM);
2577 rc = ptlrpc_start_threads(obd, mds->mds_setattr_service);
2579 GOTO(err_thread2, rc);
2581 mds->mds_readpage_service =
2582 ptlrpc_init_svc(MDS_NBUFS, MDS_BUFSIZE, MDS_MAXREQSIZE,
2583 MDS_MAXREPSIZE, MDS_READPAGE_PORTAL,
2584 MDC_REPLY_PORTAL, MDS_SERVICE_WATCHDOG_TIMEOUT,
2585 mds_handle, "mds_readpage",
2586 obd->obd_proc_entry, NULL,
2587 MDS_THREADS_MIN_READPAGE, mds_max_threads,
2589 if (!mds->mds_readpage_service) {
2590 CERROR("failed to start readpage service\n");
2591 GOTO(err_thread2, rc = -ENOMEM);
2594 rc = ptlrpc_start_threads(obd, mds->mds_readpage_service);
2597 GOTO(err_thread3, rc);
2599 ping_evictor_start();
2604 ptlrpc_unregister_service(mds->mds_readpage_service);
2605 mds->mds_readpage_service = NULL;
2607 ptlrpc_unregister_service(mds->mds_setattr_service);
2608 mds->mds_setattr_service = NULL;
2610 ptlrpc_unregister_service(mds->mds_service);
2611 mds->mds_service = NULL;
2613 lprocfs_obd_cleanup(obd);
2617 static int mdt_cleanup(struct obd_device *obd)
2619 struct mds_obd *mds = &obd->u.mds;
2622 ping_evictor_stop();
2624 down(&mds->mds_health_sem);
2625 ptlrpc_unregister_service(mds->mds_readpage_service);
2626 ptlrpc_unregister_service(mds->mds_setattr_service);
2627 ptlrpc_unregister_service(mds->mds_service);
2628 mds->mds_readpage_service = NULL;
2629 mds->mds_setattr_service = NULL;
2630 mds->mds_service = NULL;
2631 up(&mds->mds_health_sem);
2633 lprocfs_obd_cleanup(obd);
2638 static int mdt_health_check(struct obd_device *obd)
2640 struct mds_obd *mds = &obd->u.mds;
2643 down(&mds->mds_health_sem);
2644 rc |= ptlrpc_service_health_check(mds->mds_readpage_service);
2645 rc |= ptlrpc_service_health_check(mds->mds_setattr_service);
2646 rc |= ptlrpc_service_health_check(mds->mds_service);
2647 up(&mds->mds_health_sem);
2650 * health_check to return 0 on healthy
2651 * and 1 on unhealthy.
2659 static struct dentry *mds_lvfs_fid2dentry(__u64 id, __u32 gen, __u64 gr,
2662 struct obd_device *obd = data;
2665 fid.generation = gen;
2666 return mds_fid2dentry(&obd->u.mds, &fid, NULL);
2669 static int mds_health_check(struct obd_device *obd)
2671 struct obd_device_target *odt = &obd->u.obt;
2672 #ifdef USE_HEALTH_CHECK_WRITE
2673 struct mds_obd *mds = &obd->u.mds;
2677 if (odt->obt_sb->s_flags & MS_RDONLY)
2680 #ifdef USE_HEALTH_CHECK_WRITE
2681 LASSERT(mds->mds_health_check_filp != NULL);
2682 rc |= !!lvfs_check_io_health(obd, mds->mds_health_check_filp);
2687 static int mds_process_config(struct obd_device *obd, obd_count len, void *buf)
2689 struct lustre_cfg *lcfg = buf;
2690 struct lprocfs_static_vars lvars;
2693 lprocfs_init_vars(mds, &lvars);
2695 rc = class_process_proc_param(PARAM_MDT, lvars.obd_vars, lcfg, obd);
2699 struct lvfs_callback_ops mds_lvfs_ops = {
2700 l_fid2dentry: mds_lvfs_fid2dentry,
2703 /* use obd ops to offer management infrastructure */
2704 static struct obd_ops mds_obd_ops = {
2705 .o_owner = THIS_MODULE,
2706 .o_connect = mds_connect,
2707 .o_reconnect = mds_reconnect,
2708 .o_init_export = mds_init_export,
2709 .o_destroy_export = mds_destroy_export,
2710 .o_disconnect = mds_disconnect,
2711 .o_setup = mds_setup,
2712 .o_precleanup = mds_precleanup,
2713 .o_cleanup = mds_cleanup,
2714 .o_postrecov = mds_postrecov,
2715 .o_statfs = mds_obd_statfs,
2716 .o_iocontrol = mds_iocontrol,
2717 .o_create = mds_obd_create,
2718 .o_destroy = mds_obd_destroy,
2719 .o_llog_init = mds_llog_init,
2720 .o_llog_finish = mds_llog_finish,
2721 .o_notify = mds_notify,
2722 .o_health_check = mds_health_check,
2723 .o_process_config = mds_process_config,
2726 static struct obd_ops mdt_obd_ops = {
2727 .o_owner = THIS_MODULE,
2728 .o_setup = mdt_setup,
2729 .o_cleanup = mdt_cleanup,
2730 .o_health_check = mdt_health_check,
2733 quota_interface_t *mds_quota_interface_ref;
2734 extern quota_interface_t mds_quota_interface;
2736 static __attribute__((unused)) int __init mds_init(void)
2739 struct lprocfs_static_vars lvars;
2741 request_module("lquota");
2742 mds_quota_interface_ref = PORTAL_SYMBOL_GET(mds_quota_interface);
2743 rc = lquota_init(mds_quota_interface_ref);
2745 if (mds_quota_interface_ref)
2746 PORTAL_SYMBOL_PUT(mds_quota_interface);
2749 init_obd_quota_ops(mds_quota_interface_ref, &mds_obd_ops);
2751 lprocfs_init_vars(mds, &lvars);
2752 class_register_type(&mds_obd_ops, NULL,
2753 lvars.module_vars, LUSTRE_MDS_NAME, NULL);
2754 lprocfs_init_vars(mdt, &lvars);
2755 mdt_obd_ops = mdt_obd_ops; //make compiler happy
2756 // class_register_type(&mdt_obd_ops, NULL,
2757 // lvars.module_vars, LUSTRE_MDT_NAME, NULL);
2762 static __attribute__((unused)) void /*__exit*/ mds_exit(void)
2764 lquota_exit(mds_quota_interface_ref);
2765 if (mds_quota_interface_ref)
2766 PORTAL_SYMBOL_PUT(mds_quota_interface);
2768 class_unregister_type(LUSTRE_MDS_NAME);
2769 // class_unregister_type(LUSTRE_MDT_NAME);
2771 /*mds still need lov setup here*/
2772 static int mds_cmd_setup(struct obd_device *obd, struct lustre_cfg *lcfg)
2774 struct mds_obd *mds = &obd->u.mds;
2775 struct lvfs_run_ctxt saved;
2777 struct vfsmount *mnt;
2778 struct lustre_sb_info *lsi;
2779 struct lustre_mount_info *lmi;
2780 struct dentry *dentry;
2785 CDEBUG(D_INFO, "obd %s setup \n", obd->obd_name);
2786 if (strncmp(obd->obd_name, MDD_OBD_NAME, strlen(MDD_OBD_NAME)))
2789 if (lcfg->lcfg_bufcount < 5) {
2790 CERROR("invalid arg for setup %s\n", MDD_OBD_NAME);
2793 dev = lustre_cfg_string(lcfg, 4);
2794 lmi = server_get_mount(dev);
2795 LASSERT(lmi != NULL);
2797 lsi = s2lsi(lmi->lmi_sb);
2799 /* FIXME: MDD LOV initialize objects.
2800 * we need only lmi here but not get mount
2801 * OSD did mount already, so put mount back
2803 atomic_dec(&lsi->lsi_mounts);
2806 obd->obd_fsops = fsfilt_get_ops(MT_STR(lsi->lsi_ldd));
2807 mds_init_ctxt(obd, mnt);
2809 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
2810 dentry = simple_mkdir(current->fs->pwd, "OBJECTS", 0777, 1);
2811 if (IS_ERR(dentry)) {
2812 rc = PTR_ERR(dentry);
2813 CERROR("cannot create OBJECTS directory: rc = %d\n", rc);
2814 GOTO(err_putfs, rc);
2816 mds->mds_objects_dir = dentry;
2818 dentry = lookup_one_len("__iopen__", current->fs->pwd,
2819 strlen("__iopen__"));
2820 if (IS_ERR(dentry)) {
2821 rc = PTR_ERR(dentry);
2822 CERROR("cannot lookup __iopen__ directory: rc = %d\n", rc);
2823 GOTO(err_objects, rc);
2826 mds->mds_fid_de = dentry;
2827 if (!dentry->d_inode || is_bad_inode(dentry->d_inode)) {
2829 CERROR("__iopen__ directory has no inode? rc = %d\n", rc);
2833 /* open and test the lov objd file */
2834 file = filp_open(LOV_OBJID, O_RDWR | O_CREAT, 0644);
2837 CERROR("cannot open/create %s file: rc = %d\n", LOV_OBJID, rc);
2838 GOTO(err_fid, rc = PTR_ERR(file));
2840 mds->mds_lov_objid_filp = 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);
2847 rc = mds_lov_presetup(mds, lcfg);
2849 GOTO(err_objects, rc);
2851 /* Don't wait for mds_postrecov trying to clear orphans */
2852 obd->obd_async_recov = 1;
2853 rc = mds_postsetup(obd);
2854 /* Bug 11557 - allow async abort_recov start
2855 FIXME can remove most of this obd_async_recov plumbing
2856 obd->obd_async_recov = 0;
2860 GOTO(err_objects, rc);
2862 mds->mds_max_mdsize = sizeof(struct lov_mds_md);
2863 mds->mds_max_cookiesize = sizeof(struct llog_cookie);
2866 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
2869 if (mds->mds_lov_objid_filp &&
2870 filp_close((struct file *)mds->mds_lov_objid_filp, 0))
2871 CERROR("can't close %s after error\n", LOV_OBJID);
2873 dput(mds->mds_fid_de);
2875 dput(mds->mds_objects_dir);
2877 fsfilt_put_ops(obd->obd_fsops);
2881 static int mds_cmd_cleanup(struct obd_device *obd)
2883 struct mds_obd *mds = &obd->u.mds;
2884 struct lvfs_run_ctxt saved;
2889 LCONSOLE_WARN("%s: shutting down for failover; client state "
2890 "will be preserved.\n", obd->obd_name);
2892 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
2893 if (mds->mds_lov_objid_filp) {
2894 rc = filp_close((struct file *)mds->mds_lov_objid_filp, 0);
2895 mds->mds_lov_objid_filp = NULL;
2897 CERROR("%s file won't close, rc=%d\n", LOV_OBJID, rc);
2899 if (mds->mds_objects_dir != NULL) {
2900 l_dput(mds->mds_objects_dir);
2901 mds->mds_objects_dir = NULL;
2904 if (mds->mds_lov_objids != NULL)
2905 OBD_FREE(mds->mds_lov_objids, mds->mds_lov_objids_size);
2907 shrink_dcache_parent(mds->mds_fid_de);
2908 dput(mds->mds_fid_de);
2909 LL_DQUOT_OFF(obd->u.obt.obt_sb);
2910 fsfilt_put_ops(obd->obd_fsops);
2912 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
2917 static int mds_cmd_health_check(struct obd_device *obd)
2922 static struct obd_ops mds_cmd_obd_ops = {
2923 .o_owner = THIS_MODULE,
2924 .o_setup = mds_cmd_setup,
2925 .o_cleanup = mds_cmd_cleanup,
2926 .o_precleanup = mds_precleanup,
2927 .o_create = mds_obd_create,
2928 .o_destroy = mds_obd_destroy,
2929 .o_llog_init = mds_llog_init,
2930 .o_llog_finish = mds_llog_finish,
2931 .o_notify = mds_notify,
2932 .o_postrecov = mds_postrecov,
2933 // .o_health_check = mds_cmd_health_check,
2936 static int __init mds_cmd_init(void)
2938 struct lprocfs_static_vars lvars;
2940 lprocfs_init_vars(mds, &lvars);
2941 class_register_type(&mds_cmd_obd_ops, NULL, lvars.module_vars,
2942 LUSTRE_MDS_NAME, NULL);
2947 static void /*__exit*/ mds_cmd_exit(void)
2949 class_unregister_type(LUSTRE_MDS_NAME);
2952 MODULE_AUTHOR("Cluster File Systems, Inc. <info@clusterfs.com>");
2953 MODULE_DESCRIPTION("Lustre Metadata Server (MDS)");
2954 MODULE_LICENSE("GPL");
2956 module_init(mds_cmd_init);
2957 module_exit(mds_cmd_exit);