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 <obd_class.h>
54 #include <lustre_dlm.h>
56 #include <lustre_fsfilt.h>
57 #include <lprocfs_status.h>
58 #include <lustre_commit_confd.h>
59 #include <lustre_quota.h>
60 #include <lustre_disk.h>
61 #include <lustre_param.h>
63 #include "mds_internal.h"
66 CFS_MODULE_PARM(mds_num_threads, "i", int, 0444,
67 "number of MDS service threads to start");
69 static int mds_intent_policy(struct ldlm_namespace *ns,
70 struct ldlm_lock **lockp, void *req_cookie,
71 ldlm_mode_t mode, int flags, void *data);
72 static int mds_postsetup(struct obd_device *obd);
73 static int mds_cleanup(struct obd_device *obd);
75 /* Assumes caller has already pushed into the kernel filesystem context */
76 static int mds_sendpage(struct ptlrpc_request *req, struct file *file,
77 loff_t offset, int count)
79 struct ptlrpc_bulk_desc *desc;
80 struct l_wait_info lwi;
82 int rc = 0, npages, i, tmpcount, tmpsize = 0;
85 LASSERT((offset & ~CFS_PAGE_MASK) == 0); /* I'm dubious about this */
87 npages = (count + CFS_PAGE_SIZE - 1) >> CFS_PAGE_SHIFT;
88 OBD_ALLOC(pages, sizeof(*pages) * npages);
90 GOTO(out, rc = -ENOMEM);
92 desc = ptlrpc_prep_bulk_exp(req, npages, BULK_PUT_SOURCE,
95 GOTO(out_free, rc = -ENOMEM);
97 for (i = 0, tmpcount = count; i < npages; i++, tmpcount -= tmpsize) {
98 tmpsize = tmpcount > CFS_PAGE_SIZE ? CFS_PAGE_SIZE : tmpcount;
100 pages[i] = alloc_pages(GFP_KERNEL, 0);
101 if (pages[i] == NULL)
102 GOTO(cleanup_buf, rc = -ENOMEM);
104 ptlrpc_prep_bulk_page(desc, pages[i], 0, tmpsize);
107 for (i = 0, tmpcount = count; i < npages; i++, tmpcount -= tmpsize) {
108 tmpsize = tmpcount > CFS_PAGE_SIZE ? CFS_PAGE_SIZE : tmpcount;
109 CDEBUG(D_EXT2, "reading %u@%llu from dir %lu (size %llu)\n",
110 tmpsize, offset, file->f_dentry->d_inode->i_ino,
111 file->f_dentry->d_inode->i_size);
113 rc = fsfilt_readpage(req->rq_export->exp_obd, file,
114 kmap(pages[i]), tmpsize, &offset);
118 GOTO(cleanup_buf, rc = -EIO);
121 LASSERT(desc->bd_nob == count);
123 rc = ptlrpc_start_bulk_transfer(desc);
125 GOTO(cleanup_buf, rc);
127 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_SENDPAGE)) {
128 CERROR("obd_fail_loc=%x, fail operation rc=%d\n",
129 OBD_FAIL_MDS_SENDPAGE, rc);
130 GOTO(abort_bulk, rc);
133 lwi = LWI_TIMEOUT(obd_timeout * HZ / 4, NULL, NULL);
134 rc = l_wait_event(desc->bd_waitq, !ptlrpc_bulk_active(desc), &lwi);
135 LASSERT (rc == 0 || rc == -ETIMEDOUT);
138 if (desc->bd_success &&
139 desc->bd_nob_transferred == count)
140 GOTO(cleanup_buf, rc);
142 rc = -ETIMEDOUT; /* XXX should this be a different errno? */
145 DEBUG_REQ(D_ERROR, req, "bulk failed: %s %d(%d), evicting %s@%s\n",
146 (rc == -ETIMEDOUT) ? "timeout" : "network error",
147 desc->bd_nob_transferred, count,
148 req->rq_export->exp_client_uuid.uuid,
149 req->rq_export->exp_connection->c_remote_uuid.uuid);
151 class_fail_export(req->rq_export);
155 ptlrpc_abort_bulk (desc);
157 for (i = 0; i < npages; i++)
159 __free_pages(pages[i], 0);
161 ptlrpc_free_bulk(desc);
163 OBD_FREE(pages, sizeof(*pages) * npages);
168 /* only valid locked dentries or errors should be returned */
169 struct dentry *mds_fid2locked_dentry(struct obd_device *obd, struct ll_fid *fid,
170 struct vfsmount **mnt, int lock_mode,
171 struct lustre_handle *lockh,
172 char *name, int namelen, __u64 lockpart)
174 struct mds_obd *mds = &obd->u.mds;
175 struct dentry *de = mds_fid2dentry(mds, fid, mnt), *retval = de;
176 struct ldlm_res_id res_id = { .name = {0} };
177 int flags = LDLM_FL_ATOMIC_CB, rc;
178 ldlm_policy_data_t policy = { .l_inodebits = { lockpart} };
184 res_id.name[0] = de->d_inode->i_ino;
185 res_id.name[1] = de->d_inode->i_generation;
186 rc = ldlm_cli_enqueue_local(obd->obd_namespace, res_id,
187 LDLM_IBITS, &policy, lock_mode, &flags,
188 ldlm_blocking_ast, ldlm_completion_ast,
189 NULL, NULL, 0, NULL, lockh);
190 if (rc != ELDLM_OK) {
192 retval = ERR_PTR(-EIO); /* XXX translate ldlm code */
198 /* Look up an entry by inode number. */
199 /* this function ONLY returns valid dget'd dentries with an initialized inode
201 struct dentry *mds_fid2dentry(struct mds_obd *mds, struct ll_fid *fid,
202 struct vfsmount **mnt)
205 unsigned long ino = fid->id;
206 __u32 generation = fid->generation;
208 struct dentry *result;
211 RETURN(ERR_PTR(-ESTALE));
213 snprintf(fid_name, sizeof(fid_name), "0x%lx", ino);
215 CDEBUG(D_DENTRY, "--> mds_fid2dentry: ino/gen %lu/%u, sb %p\n",
216 ino, generation, mds->mds_obt.obt_sb);
218 /* under ext3 this is neither supposed to return bad inodes
220 result = ll_lookup_one_len(fid_name, mds->mds_fid_de, strlen(fid_name));
224 inode = result->d_inode;
226 RETURN(ERR_PTR(-ENOENT));
228 if (inode->i_generation == 0 || inode->i_nlink == 0) {
229 LCONSOLE_WARN("Found inode with zero generation or link -- this"
230 " may indicate disk corruption (inode: %lu/%u, "
231 "link %lu, count %d)\n", inode->i_ino,
232 inode->i_generation,(unsigned long)inode->i_nlink,
233 atomic_read(&inode->i_count));
235 RETURN(ERR_PTR(-ENOENT));
238 if (generation && inode->i_generation != generation) {
239 /* we didn't find the right inode.. */
240 CDEBUG(D_INODE, "found wrong generation: inode %lu, link: %lu, "
241 "count: %d, generation %u/%u\n", inode->i_ino,
242 (unsigned long)inode->i_nlink,
243 atomic_read(&inode->i_count), inode->i_generation,
246 RETURN(ERR_PTR(-ENOENT));
250 *mnt = mds->mds_vfsmnt;
257 static int mds_connect_internal(struct obd_export *exp,
258 struct obd_connect_data *data)
260 struct obd_device *obd = exp->exp_obd;
262 data->ocd_connect_flags &= MDS_CONNECT_SUPPORTED;
263 data->ocd_ibits_known &= MDS_INODELOCK_FULL;
265 /* If no known bits (which should not happen, probably,
266 as everybody should support LOOKUP and UPDATE bits at least)
267 revert to compat mode with plain locks. */
268 if (!data->ocd_ibits_known &&
269 data->ocd_connect_flags & OBD_CONNECT_IBITS)
270 data->ocd_connect_flags &= ~OBD_CONNECT_IBITS;
272 if (!obd->u.mds.mds_fl_acl)
273 data->ocd_connect_flags &= ~OBD_CONNECT_ACL;
275 if (!obd->u.mds.mds_fl_user_xattr)
276 data->ocd_connect_flags &= ~OBD_CONNECT_XATTR;
278 exp->exp_connect_flags = data->ocd_connect_flags;
279 data->ocd_version = LUSTRE_VERSION_CODE;
280 exp->exp_mds_data.med_ibits_known = data->ocd_ibits_known;
283 if (obd->u.mds.mds_fl_acl &&
284 ((exp->exp_connect_flags & OBD_CONNECT_ACL) == 0)) {
285 CWARN("%s: MDS requires ACL support but client does not\n",
292 static int mds_reconnect(struct obd_export *exp, struct obd_device *obd,
293 struct obd_uuid *cluuid,
294 struct obd_connect_data *data)
299 if (exp == NULL || obd == NULL || cluuid == NULL)
302 rc = mds_connect_internal(exp, data);
307 /* Establish a connection to the MDS.
309 * This will set up an export structure for the client to hold state data
310 * about that client, like open files, the last operation number it did
311 * on the server, etc.
313 static int mds_connect(struct lustre_handle *conn, struct obd_device *obd,
314 struct obd_uuid *cluuid, struct obd_connect_data *data)
316 struct obd_export *exp;
317 struct mds_export_data *med;
318 struct mds_client_data *mcd = NULL;
319 int rc, abort_recovery;
322 if (!conn || !obd || !cluuid)
325 /* Check for aborted recovery. */
326 spin_lock_bh(&obd->obd_processing_task_lock);
327 abort_recovery = obd->obd_abort_recovery;
328 spin_unlock_bh(&obd->obd_processing_task_lock);
330 target_abort_recovery(obd);
332 /* XXX There is a small race between checking the list and adding a
333 * new connection for the same UUID, but the real threat (list
334 * corruption when multiple different clients connect) is solved.
336 * There is a second race between adding the export to the list,
337 * and filling in the client data below. Hence skipping the case
338 * of NULL mcd above. We should already be controlling multiple
339 * connects at the client, and we can't hold the spinlock over
340 * memory allocations without risk of deadlocking.
342 rc = class_connect(conn, obd, cluuid);
345 exp = class_conn2export(conn);
347 med = &exp->exp_mds_data;
349 rc = mds_connect_internal(exp, data);
353 OBD_ALLOC(mcd, sizeof(*mcd));
355 GOTO(out, rc = -ENOMEM);
357 memcpy(mcd->mcd_uuid, cluuid, sizeof(mcd->mcd_uuid));
360 rc = mds_client_add(obd, exp, -1);
366 OBD_FREE(mcd, sizeof(*mcd));
369 class_disconnect(exp);
371 class_export_put(exp);
377 int mds_init_export(struct obd_export *exp)
379 struct mds_export_data *med = &exp->exp_mds_data;
381 INIT_LIST_HEAD(&med->med_open_head);
382 spin_lock_init(&med->med_open_lock);
384 spin_lock(&exp->exp_lock);
385 exp->exp_connecting = 1;
386 spin_unlock(&exp->exp_lock);
391 static int mds_destroy_export(struct obd_export *export)
393 struct mds_export_data *med;
394 struct obd_device *obd = export->exp_obd;
395 struct mds_obd *mds = &obd->u.mds;
396 struct lvfs_run_ctxt saved;
397 struct lov_mds_md *lmm;
398 struct llog_cookie *logcookies;
402 med = &export->exp_mds_data;
403 target_destroy_export(export);
405 if (obd_uuid_equals(&export->exp_client_uuid, &obd->obd_uuid))
408 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
409 /* Close any open files (which may also cause orphan unlinking). */
411 OBD_ALLOC(lmm, mds->mds_max_mdsize);
413 CWARN("%s: allocation failure during cleanup; can not force "
414 "close file handles on this service.\n", obd->obd_name);
415 GOTO(out, rc = -ENOMEM);
418 OBD_ALLOC(logcookies, mds->mds_max_cookiesize);
419 if (logcookies == NULL) {
420 CWARN("%s: allocation failure during cleanup; can not force "
421 "close file handles on this service.\n", obd->obd_name);
422 OBD_FREE(lmm, mds->mds_max_mdsize);
423 GOTO(out, rc = -ENOMEM);
426 spin_lock(&med->med_open_lock);
427 while (!list_empty(&med->med_open_head)) {
428 struct list_head *tmp = med->med_open_head.next;
429 struct mds_file_data *mfd =
430 list_entry(tmp, struct mds_file_data, mfd_list);
431 int lmm_size = mds->mds_max_mdsize;
432 umode_t mode = mfd->mfd_dentry->d_inode->i_mode;
435 /* Remove mfd handle so it can't be found again.
436 * We are consuming the mfd_list reference here. */
437 mds_mfd_unlink(mfd, 0);
438 spin_unlock(&med->med_open_lock);
440 /* If you change this message, be sure to update
441 * replay_single:test_46 */
442 CDEBUG(D_INODE|D_IOCTL, "%s: force closing file handle for "
443 "%.*s (ino %lu)\n", obd->obd_name,
444 mfd->mfd_dentry->d_name.len,mfd->mfd_dentry->d_name.name,
445 mfd->mfd_dentry->d_inode->i_ino);
447 rc = mds_get_md(obd, mfd->mfd_dentry->d_inode, lmm,&lmm_size,1);
449 CWARN("mds_get_md failure, rc=%d\n", rc);
451 valid |= OBD_MD_FLEASIZE;
453 /* child orphan sem protects orphan_dec_test and
454 * is_orphan race, mds_mfd_close drops it */
455 MDS_DOWN_WRITE_ORPHAN_SEM(mfd->mfd_dentry->d_inode);
457 rc = mds_mfd_close(NULL, REQ_REC_OFF, obd, mfd,
458 !(export->exp_flags & OBD_OPT_FAILOVER),
459 lmm, lmm_size, logcookies,
460 mds->mds_max_cookiesize,
464 CDEBUG(D_INODE|D_IOCTL, "Error closing file: %d\n", rc);
466 if (valid & OBD_MD_FLCOOKIE) {
467 rc = mds_osc_destroy_orphan(obd, mode, lmm,
468 lmm_size, logcookies, 1);
470 CDEBUG(D_INODE, "%s: destroy of orphan failed,"
471 " rc = %d\n", obd->obd_name, rc);
474 valid &= ~OBD_MD_FLCOOKIE;
477 spin_lock(&med->med_open_lock);
480 OBD_FREE(logcookies, mds->mds_max_cookiesize);
481 OBD_FREE(lmm, mds->mds_max_mdsize);
483 spin_unlock(&med->med_open_lock);
485 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
486 mds_client_free(export);
492 static int mds_disconnect(struct obd_export *exp)
498 class_export_get(exp);
500 /* Disconnect early so that clients can't keep using export */
501 rc = class_disconnect(exp);
502 if (exp->exp_obd->obd_namespace != NULL)
503 ldlm_cancel_locks_for_export(exp);
505 /* complete all outstanding replies */
506 spin_lock(&exp->exp_lock);
507 while (!list_empty(&exp->exp_outstanding_replies)) {
508 struct ptlrpc_reply_state *rs =
509 list_entry(exp->exp_outstanding_replies.next,
510 struct ptlrpc_reply_state, rs_exp_list);
511 struct ptlrpc_service *svc = rs->rs_service;
513 spin_lock(&svc->srv_lock);
514 list_del_init(&rs->rs_exp_list);
515 ptlrpc_schedule_difficult_reply(rs);
516 spin_unlock(&svc->srv_lock);
518 spin_unlock(&exp->exp_lock);
520 class_export_put(exp);
524 static int mds_getstatus(struct ptlrpc_request *req)
526 struct mds_obd *mds = mds_req2mds(req);
527 struct mds_body *body;
528 int rc, size[2] = { sizeof(struct ptlrpc_body), sizeof(*body) };
531 rc = lustre_pack_reply(req, 2, size, NULL);
532 if (rc || OBD_FAIL_CHECK(OBD_FAIL_MDS_GETSTATUS_PACK)) {
533 CERROR("mds: out of memory for message\n");
534 req->rq_status = -ENOMEM; /* superfluous? */
538 body = lustre_msg_buf(req->rq_repmsg, REPLY_REC_OFF, sizeof(*body));
539 memcpy(&body->fid1, &mds->mds_rootfid, sizeof(body->fid1));
541 /* the last_committed and last_xid fields are filled in for all
542 * replies already - no need to do so here also.
547 /* get the LOV EA from @inode and store it into @md. It can be at most
548 * @size bytes, and @size is updated with the actual EA size.
549 * The EA size is also returned on success, and -ve errno on failure.
550 * If there is no EA then 0 is returned. */
551 int mds_get_md(struct obd_device *obd, struct inode *inode, void *md,
558 LOCK_INODE_MUTEX(inode);
559 rc = fsfilt_get_md(obd, inode, md, *size, "lov");
562 CERROR("Error %d reading eadata for ino %lu\n",
566 rc = mds_convert_lov_ea(obd, inode, md, lmm_size);
578 UNLOCK_INODE_MUTEX(inode);
584 /* Call with lock=1 if you want mds_pack_md to take the i_mutex.
585 * Call with lock=0 if the caller has already taken the i_mutex. */
586 int mds_pack_md(struct obd_device *obd, struct lustre_msg *msg, int offset,
587 struct mds_body *body, struct inode *inode, int lock)
589 struct mds_obd *mds = &obd->u.mds;
595 lmm = lustre_msg_buf(msg, offset, 0);
597 /* Some problem with getting eadata when I sized the reply
599 CDEBUG(D_INFO, "no space reserved for inode %lu MD\n",
603 lmm_size = lustre_msg_buflen(msg, offset);
605 /* I don't really like this, but it is a sanity check on the client
606 * MD request. However, if the client doesn't know how much space
607 * to reserve for the MD, it shouldn't be bad to have too much space.
609 if (lmm_size > mds->mds_max_mdsize) {
610 CWARN("Reading MD for inode %lu of %d bytes > max %d\n",
611 inode->i_ino, lmm_size, mds->mds_max_mdsize);
615 rc = mds_get_md(obd, inode, lmm, &lmm_size, lock);
617 if (S_ISDIR(inode->i_mode))
618 body->valid |= OBD_MD_FLDIREA;
620 body->valid |= OBD_MD_FLEASIZE;
621 body->eadatasize = lmm_size;
628 #ifdef CONFIG_FS_POSIX_ACL
630 int mds_pack_posix_acl(struct inode *inode, struct lustre_msg *repmsg,
631 struct mds_body *repbody, int repoff)
633 struct dentry de = { .d_inode = inode };
637 LASSERT(repbody->aclsize == 0);
638 LASSERT(lustre_msg_bufcount(repmsg) > repoff);
640 buflen = lustre_msg_buflen(repmsg, repoff);
644 if (!inode->i_op || !inode->i_op->getxattr)
648 rc = inode->i_op->getxattr(&de, MDS_XATTR_NAME_ACL_ACCESS,
649 lustre_msg_buf(repmsg, repoff, buflen),
654 repbody->aclsize = rc;
655 else if (rc != -ENODATA) {
656 CERROR("buflen %d, get acl: %d\n", buflen, rc);
661 repbody->valid |= OBD_MD_FLACL;
665 #define mds_pack_posix_acl(inode, repmsg, repbody, repoff) 0
668 int mds_pack_acl(struct mds_export_data *med, struct inode *inode,
669 struct lustre_msg *repmsg, struct mds_body *repbody,
672 return mds_pack_posix_acl(inode, repmsg, repbody, repoff);
675 static int mds_getattr_internal(struct obd_device *obd, struct dentry *dentry,
676 struct ptlrpc_request *req,
677 struct mds_body *reqbody, int reply_off)
679 struct mds_body *body;
680 struct inode *inode = dentry->d_inode;
687 body = lustre_msg_buf(req->rq_repmsg, reply_off, sizeof(*body));
688 LASSERT(body != NULL); /* caller prepped reply */
690 mds_pack_inode2fid(&body->fid1, inode);
691 body->flags = reqbody->flags; /* copy MDS_BFLAG_EXT_FLAGS if present */
692 mds_pack_inode2body(body, inode);
695 if ((S_ISREG(inode->i_mode) && (reqbody->valid & OBD_MD_FLEASIZE)) ||
696 (S_ISDIR(inode->i_mode) && (reqbody->valid & OBD_MD_FLDIREA))) {
697 rc = mds_pack_md(obd, req->rq_repmsg, reply_off, body,
700 /* If we have LOV EA data, the OST holds size, atime, mtime */
701 if (!(body->valid & OBD_MD_FLEASIZE) &&
702 !(body->valid & OBD_MD_FLDIREA))
703 body->valid |= (OBD_MD_FLSIZE | OBD_MD_FLBLOCKS |
704 OBD_MD_FLATIME | OBD_MD_FLMTIME);
706 lustre_shrink_reply(req, reply_off, body->eadatasize, 0);
707 if (body->eadatasize)
709 } else if (S_ISLNK(inode->i_mode) &&
710 (reqbody->valid & OBD_MD_LINKNAME) != 0) {
711 char *symname = lustre_msg_buf(req->rq_repmsg, reply_off, 0);
714 LASSERT (symname != NULL); /* caller prepped reply */
715 len = lustre_msg_buflen(req->rq_repmsg, reply_off);
717 rc = inode->i_op->readlink(dentry, symname, len);
719 CERROR("readlink failed: %d\n", rc);
720 } else if (rc != len - 1) {
721 CERROR ("Unexpected readlink rc %d: expecting %d\n",
725 CDEBUG(D_INODE, "read symlink dest %s\n", symname);
726 body->valid |= OBD_MD_LINKNAME;
727 body->eadatasize = rc + 1;
728 symname[rc] = 0; /* NULL terminate */
732 } else if (reqbody->valid == OBD_MD_FLFLAGS &&
733 reqbody->flags & MDS_BFLAG_EXT_FLAGS) {
736 /* We only return the full set of flags on ioctl, otherwise we
737 * get enough flags from the inode in mds_pack_inode2body(). */
738 rc = fsfilt_iocontrol(obd, inode, NULL, EXT3_IOC_GETFLAGS,
741 body->flags = flags | MDS_BFLAG_EXT_FLAGS;
744 if (reqbody->valid & OBD_MD_FLMODEASIZE) {
745 struct mds_obd *mds = mds_req2mds(req);
746 body->max_cookiesize = mds->mds_max_cookiesize;
747 body->max_mdsize = mds->mds_max_mdsize;
748 body->valid |= OBD_MD_FLMODEASIZE;
754 #ifdef CONFIG_FS_POSIX_ACL
755 if ((req->rq_export->exp_connect_flags & OBD_CONNECT_ACL) &&
756 (reqbody->valid & OBD_MD_FLACL)) {
757 rc = mds_pack_acl(&req->rq_export->exp_mds_data,
758 inode, req->rq_repmsg,
761 lustre_shrink_reply(req, reply_off, body->aclsize, 0);
770 static int mds_getattr_pack_msg(struct ptlrpc_request *req, struct inode *inode,
773 struct mds_obd *mds = mds_req2mds(req);
774 struct mds_body *body;
775 int rc, bufcount = 2;
776 int size[4] = { sizeof(struct ptlrpc_body), sizeof(*body) };
779 LASSERT(offset == REQ_REC_OFF); /* non-intent */
781 body = lustre_msg_buf(req->rq_reqmsg, offset, sizeof(*body));
782 LASSERT(body != NULL); /* checked by caller */
783 LASSERT_REQSWABBED(req, offset); /* swabbed by caller */
785 if ((S_ISREG(inode->i_mode) && (body->valid & OBD_MD_FLEASIZE)) ||
786 (S_ISDIR(inode->i_mode) && (body->valid & OBD_MD_FLDIREA))) {
787 LOCK_INODE_MUTEX(inode);
788 rc = fsfilt_get_md(req->rq_export->exp_obd, inode, NULL, 0,
790 UNLOCK_INODE_MUTEX(inode);
791 CDEBUG(D_INODE, "got %d bytes MD data for inode %lu\n",
794 if (rc != -ENODATA) {
795 CERROR("error getting inode %lu MD: rc = %d\n",
800 } else if (rc > mds->mds_max_mdsize) {
802 CERROR("MD size %d larger than maximum possible %u\n",
803 rc, mds->mds_max_mdsize);
808 } else if (S_ISLNK(inode->i_mode) && (body->valid & OBD_MD_LINKNAME)) {
809 if (inode->i_size + 1 != body->eadatasize)
810 CERROR("symlink size: %Lu, reply space: %d\n",
811 inode->i_size + 1, body->eadatasize);
812 size[bufcount] = min_t(int, inode->i_size+1, body->eadatasize);
814 CDEBUG(D_INODE, "symlink size: %Lu, reply space: %d\n",
815 inode->i_size + 1, body->eadatasize);
818 #ifdef CONFIG_FS_POSIX_ACL
819 if ((req->rq_export->exp_connect_flags & OBD_CONNECT_ACL) &&
820 (body->valid & OBD_MD_FLACL)) {
821 struct dentry de = { .d_inode = inode };
824 if (inode->i_op && inode->i_op->getxattr) {
826 rc = inode->i_op->getxattr(&de, MDS_XATTR_NAME_ACL_ACCESS,
831 if (rc != -ENODATA) {
832 CERROR("got acl size: %d\n", rc);
842 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_GETATTR_PACK)) {
843 CERROR("failed MDS_GETATTR_PACK test\n");
844 req->rq_status = -ENOMEM;
848 rc = lustre_pack_reply(req, bufcount, size, NULL);
850 CERROR("lustre_pack_reply failed: rc %d\n", rc);
858 static int mds_getattr_lock(struct ptlrpc_request *req, int offset,
859 int child_part, struct lustre_handle *child_lockh)
861 struct obd_device *obd = req->rq_export->exp_obd;
862 struct mds_obd *mds = &obd->u.mds;
863 struct ldlm_reply *rep = NULL;
864 struct lvfs_run_ctxt saved;
865 struct mds_body *body;
866 struct dentry *dparent = NULL, *dchild = NULL;
867 struct lvfs_ucred uc = {NULL,};
868 struct lustre_handle parent_lockh;
870 int rc = 0, cleanup_phase = 0, resent_req = 0;
874 LASSERT(!strcmp(obd->obd_type->typ_name, LUSTRE_MDS_NAME));
876 /* Swab now, before anyone looks inside the request */
877 body = lustre_swab_reqbuf(req, offset, sizeof(*body),
878 lustre_swab_mds_body);
880 CERROR("Can't swab mds_body\n");
884 LASSERT_REQSWAB(req, offset + 1);
885 name = lustre_msg_string(req->rq_reqmsg, offset + 1, 0);
887 CERROR("Can't unpack name\n");
890 namesize = lustre_msg_buflen(req->rq_reqmsg, offset + 1);
891 /* namesize less than 2 means we have empty name, probably came from
892 revalidate by cfid, so no point in having name to be set */
896 rc = mds_init_ucred(&uc, req, offset);
900 LASSERT(offset == REQ_REC_OFF || offset == DLM_INTENT_REC_OFF);
901 /* if requests were at offset 2, the getattr reply goes back at 1 */
902 if (offset == DLM_INTENT_REC_OFF) {
903 rep = lustre_msg_buf(req->rq_repmsg, DLM_LOCKREPLY_OFF,
905 offset = DLM_REPLY_REC_OFF;
908 push_ctxt(&saved, &obd->obd_lvfs_ctxt, &uc);
909 cleanup_phase = 1; /* kernel context */
910 intent_set_disposition(rep, DISP_LOOKUP_EXECD);
912 /* FIXME: handle raw lookup */
914 if (body->valid == OBD_MD_FLID) {
915 struct mds_body *mds_reply;
916 int size = sizeof(*mds_reply);
918 // The user requested ONLY the inode number, so do a raw lookup
919 rc = lustre_pack_reply(req, 1, &size, NULL);
921 CERROR("out of memory\n");
925 rc = dir->i_op->lookup_raw(dir, name, namesize - 1, &inum);
927 mds_reply = lustre_msg_buf(req->rq_repmsg, offset,
929 mds_reply->fid1.id = inum;
930 mds_reply->valid = OBD_MD_FLID;
935 if (lustre_handle_is_used(child_lockh)) {
936 LASSERT(lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT);
940 if (resent_req == 0) {
942 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_RESEND, obd_timeout*2);
943 rc = mds_get_parent_child_locked(obd, &obd->u.mds,
947 MDS_INODELOCK_UPDATE,
949 child_lockh, &dchild,
952 /* For revalidate by fid we always take UPDATE lock */
953 dchild = mds_fid2locked_dentry(obd, &body->fid2, NULL,
955 NULL, 0, child_part);
958 rc = PTR_ERR(dchild);
963 struct ldlm_lock *granted_lock;
964 struct ll_fid child_fid;
965 struct ldlm_resource *res;
966 DEBUG_REQ(D_DLMTRACE, req, "resent, not enqueuing new locks");
967 granted_lock = ldlm_handle2lock(child_lockh);
968 LASSERTF(granted_lock != NULL, LPU64"/%u lockh "LPX64"\n",
969 body->fid1.id, body->fid1.generation,
970 child_lockh->cookie);
973 res = granted_lock->l_resource;
974 child_fid.id = res->lr_name.name[0];
975 child_fid.generation = res->lr_name.name[1];
976 dchild = mds_fid2dentry(&obd->u.mds, &child_fid, NULL);
977 LASSERT(!IS_ERR(dchild));
978 LDLM_LOCK_PUT(granted_lock);
981 cleanup_phase = 2; /* dchild, dparent, locks */
983 if (dchild->d_inode == NULL) {
984 intent_set_disposition(rep, DISP_LOOKUP_NEG);
985 /* in the intent case, the policy clears this error:
986 the disposition is enough */
987 GOTO(cleanup, rc = -ENOENT);
989 intent_set_disposition(rep, DISP_LOOKUP_POS);
992 if (req->rq_repmsg == NULL) {
993 rc = mds_getattr_pack_msg(req, dchild->d_inode, offset);
995 CERROR ("mds_getattr_pack_msg: %d\n", rc);
1000 rc = mds_getattr_internal(obd, dchild, req, body, offset);
1001 GOTO(cleanup, rc); /* returns the lock to the client */
1004 switch (cleanup_phase) {
1006 if (resent_req == 0) {
1007 if (rc && dchild->d_inode)
1008 ldlm_lock_decref(child_lockh, LCK_CR);
1010 ldlm_lock_decref(&parent_lockh, LCK_CR);
1016 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, &uc);
1018 mds_exit_ucred(&uc, mds);
1019 if (req->rq_reply_state == NULL) {
1020 req->rq_status = rc;
1021 lustre_pack_reply(req, 1, NULL, NULL);
1027 static int mds_getattr(struct ptlrpc_request *req, int offset)
1029 struct mds_obd *mds = mds_req2mds(req);
1030 struct obd_device *obd = req->rq_export->exp_obd;
1031 struct lvfs_run_ctxt saved;
1033 struct mds_body *body;
1034 struct lvfs_ucred uc = { NULL, };
1038 OBD_COUNTER_INCREMENT(obd, getattr);
1040 body = lustre_swab_reqbuf(req, offset, sizeof(*body),
1041 lustre_swab_mds_body);
1045 rc = mds_init_ucred(&uc, req, offset);
1047 GOTO(out_ucred, rc);
1049 push_ctxt(&saved, &obd->obd_lvfs_ctxt, &uc);
1050 de = mds_fid2dentry(mds, &body->fid1, NULL);
1052 rc = req->rq_status = PTR_ERR(de);
1056 rc = mds_getattr_pack_msg(req, de->d_inode, offset);
1058 CERROR("mds_getattr_pack_msg: %d\n", rc);
1062 req->rq_status = mds_getattr_internal(obd, de, req, body,REPLY_REC_OFF);
1067 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, &uc);
1069 if (req->rq_reply_state == NULL) {
1070 req->rq_status = rc;
1071 lustre_pack_reply(req, 1, NULL, NULL);
1073 mds_exit_ucred(&uc, mds);
1077 static int mds_obd_statfs(struct obd_device *obd, struct obd_statfs *osfs,
1082 spin_lock(&obd->obd_osfs_lock);
1083 rc = fsfilt_statfs(obd, obd->u.obt.obt_sb, max_age);
1085 memcpy(osfs, &obd->obd_osfs, sizeof(*osfs));
1086 spin_unlock(&obd->obd_osfs_lock);
1091 static int mds_statfs(struct ptlrpc_request *req)
1093 struct obd_device *obd = req->rq_export->exp_obd;
1094 int rc, size[2] = { sizeof(struct ptlrpc_body),
1095 sizeof(struct obd_statfs) };
1098 /* This will trigger a watchdog timeout */
1099 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_STATFS_LCW_SLEEP,
1100 (MDS_SERVICE_WATCHDOG_TIMEOUT / 1000) + 1);
1101 OBD_COUNTER_INCREMENT(obd, statfs);
1103 rc = lustre_pack_reply(req, 2, size, NULL);
1104 if (rc || OBD_FAIL_CHECK(OBD_FAIL_MDS_STATFS_PACK)) {
1105 CERROR("mds: statfs lustre_pack_reply failed: rc = %d\n", rc);
1109 /* We call this so that we can cache a bit - 1 jiffie worth */
1110 rc = mds_obd_statfs(obd, lustre_msg_buf(req->rq_repmsg, REPLY_REC_OFF,
1111 size[REPLY_REC_OFF]),
1112 cfs_time_current_64() - HZ);
1114 CERROR("mds_obd_statfs failed: rc %d\n", rc);
1120 req->rq_status = rc;
1124 static int mds_sync(struct ptlrpc_request *req, int offset)
1126 struct obd_device *obd = req->rq_export->exp_obd;
1127 struct mds_obd *mds = &obd->u.mds;
1128 struct mds_body *body;
1129 int rc, size[2] = { sizeof(struct ptlrpc_body), sizeof(*body) };
1132 body = lustre_swab_reqbuf(req, offset, sizeof(*body),
1133 lustre_swab_mds_body);
1135 GOTO(out, rc = -EFAULT);
1137 rc = lustre_pack_reply(req, 2, size, NULL);
1138 if (rc || OBD_FAIL_CHECK(OBD_FAIL_MDS_SYNC_PACK)) {
1139 CERROR("fsync lustre_pack_reply failed: rc = %d\n", rc);
1143 if (body->fid1.id == 0) {
1144 /* a fid of zero is taken to mean "sync whole filesystem" */
1145 rc = fsfilt_sync(obd, obd->u.obt.obt_sb);
1150 de = mds_fid2dentry(mds, &body->fid1, NULL);
1152 GOTO(out, rc = PTR_ERR(de));
1154 /* The file parameter isn't used for anything */
1155 if (de->d_inode->i_fop && de->d_inode->i_fop->fsync)
1156 rc = de->d_inode->i_fop->fsync(NULL, de, 1);
1158 body = lustre_msg_buf(req->rq_repmsg, REPLY_REC_OFF,
1160 mds_pack_inode2fid(&body->fid1, de->d_inode);
1161 mds_pack_inode2body(body, de->d_inode);
1168 req->rq_status = rc;
1172 /* mds_readpage does not take a DLM lock on the inode, because the client must
1173 * already have a PR lock.
1175 * If we were to take another one here, a deadlock will result, if another
1176 * thread is already waiting for a PW lock. */
1177 static int mds_readpage(struct ptlrpc_request *req, int offset)
1179 struct obd_device *obd = req->rq_export->exp_obd;
1180 struct mds_obd *mds = &obd->u.mds;
1181 struct vfsmount *mnt;
1184 struct mds_body *body, *repbody;
1185 struct lvfs_run_ctxt saved;
1186 int rc, size[2] = { sizeof(struct ptlrpc_body), sizeof(*repbody) };
1187 struct lvfs_ucred uc = {NULL,};
1190 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_READPAGE_PACK))
1193 rc = lustre_pack_reply(req, 2, size, NULL);
1195 CERROR("error packing readpage reply: rc %d\n", rc);
1199 body = lustre_swab_reqbuf(req, offset, sizeof(*body),
1200 lustre_swab_mds_body);
1202 GOTO (out, rc = -EFAULT);
1204 rc = mds_init_ucred(&uc, req, offset);
1208 push_ctxt(&saved, &obd->obd_lvfs_ctxt, &uc);
1209 de = mds_fid2dentry(&obd->u.mds, &body->fid1, &mnt);
1211 GOTO(out_pop, rc = PTR_ERR(de));
1213 CDEBUG(D_INODE, "ino %lu\n", de->d_inode->i_ino);
1215 file = dentry_open(de, mnt, O_RDONLY | O_LARGEFILE);
1216 /* note: in case of an error, dentry_open puts dentry */
1218 GOTO(out_pop, rc = PTR_ERR(file));
1220 /* body->size is actually the offset -eeb */
1221 if ((body->size & (de->d_inode->i_blksize - 1)) != 0) {
1222 CERROR("offset "LPU64" not on a block boundary of %lu\n",
1223 body->size, de->d_inode->i_blksize);
1224 GOTO(out_file, rc = -EFAULT);
1227 /* body->nlink is actually the #bytes to read -eeb */
1228 if (body->nlink & (de->d_inode->i_blksize - 1)) {
1229 CERROR("size %u is not multiple of blocksize %lu\n",
1230 body->nlink, de->d_inode->i_blksize);
1231 GOTO(out_file, rc = -EFAULT);
1234 repbody = lustre_msg_buf(req->rq_repmsg, REPLY_REC_OFF,
1236 repbody->size = file->f_dentry->d_inode->i_size;
1237 repbody->valid = OBD_MD_FLSIZE;
1239 /* to make this asynchronous make sure that the handling function
1240 doesn't send a reply when this function completes. Instead a
1241 callback function would send the reply */
1242 /* body->size is actually the offset -eeb */
1243 rc = mds_sendpage(req, file, body->size, body->nlink);
1246 filp_close(file, 0);
1248 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, &uc);
1250 mds_exit_ucred(&uc, mds);
1251 req->rq_status = rc;
1255 int mds_reint(struct ptlrpc_request *req, int offset,
1256 struct lustre_handle *lockh)
1258 struct mds_update_record *rec; /* 116 bytes on the stack? no sir! */
1261 OBD_ALLOC(rec, sizeof(*rec));
1265 rc = mds_update_unpack(req, offset, rec);
1266 if (rc || OBD_FAIL_CHECK(OBD_FAIL_MDS_REINT_UNPACK)) {
1267 CERROR("invalid record\n");
1268 GOTO(out, req->rq_status = -EINVAL);
1271 /* rc will be used to interrupt a for loop over multiple records */
1272 rc = mds_reint_rec(rec, offset, req, lockh);
1274 OBD_FREE(rec, sizeof(*rec));
1278 static int mds_filter_recovery_request(struct ptlrpc_request *req,
1279 struct obd_device *obd, int *process)
1281 switch (lustre_msg_get_opc(req->rq_reqmsg)) {
1282 case MDS_CONNECT: /* This will never get here, but for completeness. */
1283 case OST_CONNECT: /* This will never get here, but for completeness. */
1284 case MDS_DISCONNECT:
1285 case OST_DISCONNECT:
1290 case MDS_SYNC: /* used in unmounting */
1294 *process = target_queue_recovery_request(req, obd);
1298 DEBUG_REQ(D_ERROR, req, "not permitted during recovery");
1300 /* XXX what should we set rq_status to here? */
1301 req->rq_status = -EAGAIN;
1302 RETURN(ptlrpc_error(req));
1306 static char *reint_names[] = {
1307 [REINT_SETATTR] "setattr",
1308 [REINT_CREATE] "create",
1309 [REINT_LINK] "link",
1310 [REINT_UNLINK] "unlink",
1311 [REINT_RENAME] "rename",
1312 [REINT_OPEN] "open",
1315 static int mds_set_info_rpc(struct obd_export *exp, struct ptlrpc_request *req)
1322 key = lustre_msg_buf(req->rq_reqmsg, REQ_REC_OFF, 1);
1324 DEBUG_REQ(D_HA, req, "no set_info key");
1327 keylen = lustre_msg_buflen(req->rq_reqmsg, REQ_REC_OFF);
1329 val = lustre_msg_buf(req->rq_reqmsg, REQ_REC_OFF + 1, sizeof(*val));
1331 DEBUG_REQ(D_HA, req, "no set_info val");
1335 rc = lustre_pack_reply(req, 1, NULL, NULL);
1338 lustre_msg_set_status(req->rq_repmsg, 0);
1340 if (keylen < strlen("read-only") ||
1341 memcmp(key, "read-only", keylen) != 0)
1345 exp->exp_connect_flags |= OBD_CONNECT_RDONLY;
1347 exp->exp_connect_flags &= ~OBD_CONNECT_RDONLY;
1352 static int mds_handle_quotacheck(struct ptlrpc_request *req)
1354 struct obd_quotactl *oqctl;
1358 oqctl = lustre_swab_reqbuf(req, REQ_REC_OFF, sizeof(*oqctl),
1359 lustre_swab_obd_quotactl);
1363 rc = lustre_pack_reply(req, 1, NULL, NULL);
1365 CERROR("mds: out of memory while packing quotacheck reply\n");
1369 req->rq_status = obd_quotacheck(req->rq_export, oqctl);
1373 static int mds_handle_quotactl(struct ptlrpc_request *req)
1375 struct obd_quotactl *oqctl, *repoqc;
1376 int rc, size[2] = { sizeof(struct ptlrpc_body), sizeof(*repoqc) };
1379 oqctl = lustre_swab_reqbuf(req, REQ_REC_OFF, sizeof(*oqctl),
1380 lustre_swab_obd_quotactl);
1384 rc = lustre_pack_reply(req, 2, size, NULL);
1388 repoqc = lustre_msg_buf(req->rq_repmsg, REPLY_REC_OFF, sizeof(*repoqc));
1390 req->rq_status = obd_quotactl(req->rq_export, oqctl);
1395 static int mds_msg_check_version(struct lustre_msg *msg)
1399 switch (lustre_msg_get_opc(msg)) {
1401 case MDS_DISCONNECT:
1403 rc = lustre_msg_check_version(msg, LUSTRE_OBD_VERSION);
1405 CERROR("bad opc %u version %08x, expecting %08x\n",
1406 lustre_msg_get_opc(msg),
1407 lustre_msg_get_version(msg),
1408 LUSTRE_OBD_VERSION);
1412 case MDS_GETATTR_NAME:
1417 case MDS_DONE_WRITING:
1423 case MDS_QUOTACHECK:
1427 rc = lustre_msg_check_version(msg, LUSTRE_MDS_VERSION);
1429 CERROR("bad opc %u version %08x, expecting %08x\n",
1430 lustre_msg_get_opc(msg),
1431 lustre_msg_get_version(msg),
1432 LUSTRE_MDS_VERSION);
1436 case LDLM_BL_CALLBACK:
1437 case LDLM_CP_CALLBACK:
1438 rc = lustre_msg_check_version(msg, LUSTRE_DLM_VERSION);
1440 CERROR("bad opc %u version %08x, expecting %08x\n",
1441 lustre_msg_get_opc(msg),
1442 lustre_msg_get_version(msg),
1443 LUSTRE_DLM_VERSION);
1445 case OBD_LOG_CANCEL:
1446 case LLOG_ORIGIN_HANDLE_CREATE:
1447 case LLOG_ORIGIN_HANDLE_NEXT_BLOCK:
1448 case LLOG_ORIGIN_HANDLE_READ_HEADER:
1449 case LLOG_ORIGIN_HANDLE_CLOSE:
1450 case LLOG_ORIGIN_HANDLE_DESTROY:
1451 case LLOG_ORIGIN_HANDLE_PREV_BLOCK:
1453 rc = lustre_msg_check_version(msg, LUSTRE_LOG_VERSION);
1455 CERROR("bad opc %u version %08x, expecting %08x\n",
1456 lustre_msg_get_opc(msg),
1457 lustre_msg_get_version(msg),
1458 LUSTRE_LOG_VERSION);
1461 CERROR("MDS unknown opcode %d\n", lustre_msg_get_opc(msg));
1467 int mds_handle(struct ptlrpc_request *req)
1469 int should_process, fail = OBD_FAIL_MDS_ALL_REPLY_NET;
1471 struct mds_obd *mds = NULL; /* quell gcc overwarning */
1472 struct obd_device *obd = NULL;
1475 OBD_FAIL_RETURN(OBD_FAIL_MDS_ALL_REQUEST_NET | OBD_FAIL_ONCE, 0);
1477 LASSERT(current->journal_info == NULL);
1479 rc = mds_msg_check_version(req->rq_reqmsg);
1481 CERROR("MDS drop mal-formed request\n");
1485 /* XXX identical to OST */
1486 if (lustre_msg_get_opc(req->rq_reqmsg) != MDS_CONNECT) {
1487 struct mds_export_data *med;
1488 int recovering, abort_recovery;
1490 if (req->rq_export == NULL) {
1491 CERROR("operation %d on unconnected MDS from %s\n",
1492 lustre_msg_get_opc(req->rq_reqmsg),
1493 libcfs_id2str(req->rq_peer));
1494 req->rq_status = -ENOTCONN;
1495 GOTO(out, rc = -ENOTCONN);
1498 med = &req->rq_export->exp_mds_data;
1499 obd = req->rq_export->exp_obd;
1502 /* sanity check: if the xid matches, the request must
1503 * be marked as a resent or replayed */
1504 if (req->rq_xid == le64_to_cpu(med->med_mcd->mcd_last_xid) ||
1505 req->rq_xid == le64_to_cpu(med->med_mcd->mcd_last_close_xid))
1506 if (!(lustre_msg_get_flags(req->rq_reqmsg) &
1507 (MSG_RESENT | MSG_REPLAY))) {
1508 CERROR("rq_xid "LPU64" matches last_xid, "
1509 "expected RESENT flag\n",
1511 req->rq_status = -ENOTCONN;
1512 GOTO(out, rc = -EFAULT);
1514 /* else: note the opposite is not always true; a
1515 * RESENT req after a failover will usually not match
1516 * the last_xid, since it was likely never
1517 * committed. A REPLAYed request will almost never
1518 * match the last xid, however it could for a
1519 * committed, but still retained, open. */
1521 /* Check for aborted recovery. */
1522 spin_lock_bh(&obd->obd_processing_task_lock);
1523 abort_recovery = obd->obd_abort_recovery;
1524 recovering = obd->obd_recovering;
1525 spin_unlock_bh(&obd->obd_processing_task_lock);
1526 if (abort_recovery) {
1527 target_abort_recovery(obd);
1528 } else if (recovering) {
1529 rc = mds_filter_recovery_request(req, obd,
1531 if (rc || !should_process)
1536 switch (lustre_msg_get_opc(req->rq_reqmsg)) {
1538 DEBUG_REQ(D_INODE, req, "connect");
1539 OBD_FAIL_RETURN(OBD_FAIL_MDS_CONNECT_NET, 0);
1540 rc = target_handle_connect(req, mds_handle);
1542 /* Now that we have an export, set mds. */
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 if (lustre_msg_get_flags(req->rq_reqmsg) & MSG_LAST_REPLAY) {
1786 if (obd && obd->obd_recovering) {
1787 DEBUG_REQ(D_HA, req, "LAST_REPLAY, queuing reply");
1788 return target_queue_final_reply(req, rc);
1790 /* Lost a race with recovery; let the error path DTRT. */
1791 rc = req->rq_status = -ENOTCONN;
1794 target_send_reply(req, rc, fail);
1798 /* Update the server data on disk. This stores the new mount_count and
1799 * also the last_rcvd value to disk. If we don't have a clean shutdown,
1800 * then the server last_rcvd value may be less than that of the clients.
1801 * This will alert us that we may need to do client recovery.
1803 * Also assumes for mds_last_transno that we are not modifying it (no locking).
1805 int mds_update_server_data(struct obd_device *obd, int force_sync)
1807 struct mds_obd *mds = &obd->u.mds;
1808 struct lr_server_data *lsd = mds->mds_server_data;
1809 struct file *filp = mds->mds_rcvd_filp;
1810 struct lvfs_run_ctxt saved;
1815 CDEBUG(D_SUPER, "MDS mount_count is "LPU64", last_transno is "LPU64"\n",
1816 mds->mds_mount_count, mds->mds_last_transno);
1818 spin_lock(&mds->mds_transno_lock);
1819 lsd->lsd_last_transno = cpu_to_le64(mds->mds_last_transno);
1820 spin_unlock(&mds->mds_transno_lock);
1822 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
1823 rc = fsfilt_write_record(obd, filp, lsd, sizeof(*lsd), &off,force_sync);
1824 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
1826 CERROR("error writing MDS server data: rc = %d\n", rc);
1831 static void fsoptions_to_mds_flags(struct mds_obd *mds, char *options)
1841 while (*p && *p != ',')
1845 if (len == sizeof("user_xattr") - 1 &&
1846 memcmp(options, "user_xattr", len) == 0) {
1847 mds->mds_fl_user_xattr = 1;
1848 LCONSOLE_INFO("Enabling user_xattr\n");
1849 } else if (len == sizeof("nouser_xattr") - 1 &&
1850 memcmp(options, "nouser_xattr", len) == 0) {
1851 mds->mds_fl_user_xattr = 0;
1852 LCONSOLE_INFO("Disabling user_xattr\n");
1853 } else if (len == sizeof("acl") - 1 &&
1854 memcmp(options, "acl", len) == 0) {
1855 #ifdef CONFIG_FS_POSIX_ACL
1856 mds->mds_fl_acl = 1;
1857 LCONSOLE_INFO("Enabling ACL\n");
1859 CWARN("ignoring unsupported acl mount option\n");
1861 } else if (len == sizeof("noacl") - 1 &&
1862 memcmp(options, "noacl", len) == 0) {
1863 #ifdef CONFIG_FS_POSIX_ACL
1864 mds->mds_fl_acl = 0;
1865 LCONSOLE_INFO("Disabling ACL\n");
1873 /* mount the file system (secretly). lustre_cfg parameters are:
1879 static int mds_setup(struct obd_device *obd, obd_count len, void *buf)
1881 struct lprocfs_static_vars lvars;
1882 struct lustre_cfg* lcfg = buf;
1883 struct mds_obd *mds = &obd->u.mds;
1884 struct lustre_sb_info *lsi;
1885 struct lustre_mount_info *lmi;
1886 struct vfsmount *mnt;
1887 struct obd_uuid uuid;
1894 /* setup 1:/dev/loop/0 2:ext3 3:mdsA 4:errors=remount-ro,iopen_nopriv */
1896 CLASSERT(offsetof(struct obd_device, u.obt) ==
1897 offsetof(struct obd_device, u.mds.mds_obt));
1899 if (lcfg->lcfg_bufcount < 3)
1902 if (LUSTRE_CFG_BUFLEN(lcfg, 1) == 0 || LUSTRE_CFG_BUFLEN(lcfg, 2) == 0)
1905 lmi = server_get_mount(obd->obd_name);
1907 CERROR("Not mounted in lustre_fill_super?\n");
1911 /* We mounted in lustre_fill_super.
1912 lcfg bufs 1, 2, 4 (device, fstype, mount opts) are ignored.*/
1913 lsi = s2lsi(lmi->lmi_sb);
1914 fsoptions_to_mds_flags(mds, lsi->lsi_ldd->ldd_mount_opts);
1915 fsoptions_to_mds_flags(mds, lsi->lsi_lmd->lmd_opts);
1917 obd->obd_fsops = fsfilt_get_ops(MT_STR(lsi->lsi_ldd));
1918 if (IS_ERR(obd->obd_fsops))
1919 GOTO(err_put, rc = PTR_ERR(obd->obd_fsops));
1921 CDEBUG(D_SUPER, "%s: mnt = %p\n", lustre_cfg_string(lcfg, 1), mnt);
1923 LASSERT(!lvfs_check_rdonly(lvfs_sbdev(mnt->mnt_sb)));
1925 sema_init(&mds->mds_epoch_sem, 1);
1926 spin_lock_init(&mds->mds_transno_lock);
1927 mds->mds_max_mdsize = sizeof(struct lov_mds_md);
1928 mds->mds_max_cookiesize = sizeof(struct llog_cookie);
1929 mds->mds_atime_diff = MAX_ATIME_DIFF;
1931 sprintf(ns_name, "mds-%s", obd->obd_uuid.uuid);
1932 obd->obd_namespace = ldlm_namespace_new(ns_name, LDLM_NAMESPACE_SERVER);
1933 if (obd->obd_namespace == NULL) {
1935 GOTO(err_ops, rc = -ENOMEM);
1937 ldlm_register_intent(obd->obd_namespace, mds_intent_policy);
1939 rc = mds_fs_setup(obd, mnt);
1941 CERROR("%s: MDS filesystem method init failed: rc = %d\n",
1946 rc = llog_start_commit_thread();
1950 if (lcfg->lcfg_bufcount >= 4 && LUSTRE_CFG_BUFLEN(lcfg, 3) > 0) {
1953 ll_generate_random_uuid(uuid);
1954 class_uuid_unparse(uuid, &mds->mds_lov_uuid);
1956 OBD_ALLOC(mds->mds_profile, LUSTRE_CFG_BUFLEN(lcfg, 3));
1957 if (mds->mds_profile == NULL)
1958 GOTO(err_fs, rc = -ENOMEM);
1960 strncpy(mds->mds_profile, lustre_cfg_string(lcfg, 3),
1961 LUSTRE_CFG_BUFLEN(lcfg, 3));
1964 ptlrpc_init_client(LDLM_CB_REQUEST_PORTAL, LDLM_CB_REPLY_PORTAL,
1965 "mds_ldlm_client", &obd->obd_ldlm_client);
1966 obd->obd_replayable = 1;
1968 rc = lquota_setup(mds_quota_interface_ref, obd);
1972 mds->mds_group_hash = upcall_cache_init(obd->obd_name);
1973 if (IS_ERR(mds->mds_group_hash)) {
1974 rc = PTR_ERR(mds->mds_group_hash);
1975 mds->mds_group_hash = NULL;
1976 GOTO(err_qctxt, rc);
1979 /* Don't wait for mds_postrecov trying to clear orphans */
1980 obd->obd_async_recov = 1;
1981 rc = mds_postsetup(obd);
1982 /* Bug 11557 - allow async abort_recov start
1983 FIXME can remove most of this obd_async_recov plumbing
1984 obd->obd_async_recov = 0;
1987 GOTO(err_qctxt, rc);
1989 lprocfs_init_vars(mds, &lvars);
1990 if (lprocfs_obd_setup(obd, lvars.obd_vars) == 0 &&
1991 lprocfs_alloc_obd_stats(obd, LPROC_MDS_LAST) == 0) {
1992 /* Init private stats here */
1993 mds_stats_counter_init(obd->obd_stats);
1994 obd->obd_proc_exports = proc_mkdir("exports",
1995 obd->obd_proc_entry);
1998 uuid_ptr = fsfilt_uuid(obd, obd->u.obt.obt_sb);
1999 if (uuid_ptr != NULL) {
2000 class_uuid_unparse(uuid_ptr, &uuid);
2006 label = fsfilt_get_label(obd, obd->u.obt.obt_sb);
2007 if (obd->obd_recovering) {
2008 LCONSOLE_WARN("MDT %s now serving %s (%s%s%s), but will be in "
2009 "recovery until %d %s reconnect, or if no clients"
2010 " reconnect for %d:%.02d; during that time new "
2011 "clients will not be allowed to connect. "
2012 "Recovery progress can be monitored by watching "
2013 "/proc/fs/lustre/mds/%s/recovery_status.\n",
2014 obd->obd_name, lustre_cfg_string(lcfg, 1),
2015 label ?: "", label ? "/" : "", str,
2016 obd->obd_recoverable_clients,
2017 (obd->obd_recoverable_clients == 1) ?
2018 "client" : "clients",
2019 (int)(OBD_RECOVERY_TIMEOUT) / 60,
2020 (int)(OBD_RECOVERY_TIMEOUT) % 60,
2023 LCONSOLE_INFO("MDT %s now serving %s (%s%s%s) with recovery "
2024 "%s\n", obd->obd_name, lustre_cfg_string(lcfg, 1),
2025 label ?: "", label ? "/" : "", str,
2026 obd->obd_replayable ? "enabled" : "disabled");
2029 if (ldlm_timeout == LDLM_TIMEOUT_DEFAULT)
2035 lquota_cleanup(mds_quota_interface_ref, obd);
2037 /* No extra cleanup needed for llog_init_commit_thread() */
2038 mds_fs_cleanup(obd);
2039 upcall_cache_cleanup(mds->mds_group_hash);
2040 mds->mds_group_hash = NULL;
2042 ldlm_namespace_free(obd->obd_namespace, 0);
2043 obd->obd_namespace = NULL;
2045 fsfilt_put_ops(obd->obd_fsops);
2047 server_put_mount(obd->obd_name, mnt);
2048 obd->u.obt.obt_sb = NULL;
2052 static int mds_lov_clean(struct obd_device *obd)
2054 struct mds_obd *mds = &obd->u.mds;
2055 struct obd_device *osc = mds->mds_osc_obd;
2058 if (mds->mds_profile) {
2059 class_del_profile(mds->mds_profile);
2060 OBD_FREE(mds->mds_profile, strlen(mds->mds_profile) + 1);
2061 mds->mds_profile = NULL;
2064 /* There better be a lov */
2068 RETURN(PTR_ERR(osc));
2070 obd_register_observer(osc, NULL);
2072 /* Give lov our same shutdown flags */
2073 osc->obd_force = obd->obd_force;
2074 osc->obd_fail = obd->obd_fail;
2076 /* Cleanup the lov */
2077 obd_disconnect(mds->mds_osc_exp);
2078 class_manual_cleanup(osc);
2079 mds->mds_osc_exp = NULL;
2084 static int mds_postsetup(struct obd_device *obd)
2086 struct mds_obd *mds = &obd->u.mds;
2090 rc = llog_setup(obd, LLOG_CONFIG_ORIG_CTXT, obd, 0, NULL,
2095 rc = llog_setup(obd, LLOG_LOVEA_ORIG_CTXT, obd, 0, NULL,
2100 if (mds->mds_profile) {
2101 struct lustre_profile *lprof;
2102 /* The profile defines which osc and mdc to connect to, for a
2103 client. We reuse that here to figure out the name of the
2104 lov to use (and ignore lprof->lp_mdc).
2105 The profile was set in the config log with
2106 LCFG_MOUNTOPT profilenm oscnm mdcnm */
2107 lprof = class_get_profile(mds->mds_profile);
2108 if (lprof == NULL) {
2109 CERROR("No profile found: %s\n", mds->mds_profile);
2110 GOTO(err_cleanup, rc = -ENOENT);
2112 rc = mds_lov_connect(obd, lprof->lp_osc);
2114 GOTO(err_cleanup, rc);
2121 llog_cleanup(llog_get_context(obd, LLOG_CONFIG_ORIG_CTXT));
2122 llog_cleanup(llog_get_context(obd, LLOG_LOVEA_ORIG_CTXT));
2126 int mds_postrecov(struct obd_device *obd)
2134 LASSERT(!obd->obd_recovering);
2135 LASSERT(llog_get_context(obd, LLOG_MDS_OST_ORIG_CTXT) != NULL);
2137 /* FIXME why not put this in the synchronize? */
2138 /* set nextid first, so we are sure it happens */
2139 rc = mds_lov_set_nextid(obd);
2141 CERROR("%s: mds_lov_set_nextid failed %d\n",
2146 /* clean PENDING dir */
2147 rc = mds_cleanup_pending(obd);
2151 /* FIXME Does target_finish_recovery really need this to block? */
2152 /* Notify the LOV, which will in turn call mds_notify for each tgt */
2153 /* This means that we have to hack obd_notify to think we're obd_set_up
2154 during mds_lov_connect. */
2155 obd_notify(obd->u.mds.mds_osc_obd, NULL,
2156 obd->obd_async_recov ? OBD_NOTIFY_SYNC_NONBLOCK :
2157 OBD_NOTIFY_SYNC, NULL);
2159 /* quota recovery */
2160 lquota_recovery(mds_quota_interface_ref, obd);
2166 /* We need to be able to stop an mds_lov_synchronize */
2167 static int mds_lov_early_clean(struct obd_device *obd)
2169 struct mds_obd *mds = &obd->u.mds;
2170 struct obd_device *osc = mds->mds_osc_obd;
2172 if (!osc || (!obd->obd_force && !obd->obd_fail))
2175 CDEBUG(D_HA, "abort inflight\n");
2176 return (obd_precleanup(osc, OBD_CLEANUP_EARLY));
2179 static int mds_precleanup(struct obd_device *obd, enum obd_cleanup_stage stage)
2185 case OBD_CLEANUP_EARLY:
2187 case OBD_CLEANUP_EXPORTS:
2188 target_cleanup_recovery(obd);
2189 mds_lov_early_clean(obd);
2191 case OBD_CLEANUP_SELF_EXP:
2192 mds_lov_disconnect(obd);
2194 llog_cleanup(llog_get_context(obd, LLOG_CONFIG_ORIG_CTXT));
2195 llog_cleanup(llog_get_context(obd, LLOG_LOVEA_ORIG_CTXT));
2196 rc = obd_llog_finish(obd, 0);
2198 case OBD_CLEANUP_OBD:
2204 static int mds_cleanup(struct obd_device *obd)
2206 struct mds_obd *mds = &obd->u.mds;
2207 lvfs_sbdev_type save_dev;
2210 if (obd->u.obt.obt_sb == NULL)
2212 save_dev = lvfs_sbdev(obd->u.obt.obt_sb);
2214 if (mds->mds_osc_exp)
2215 /* lov export was disconnected by mds_lov_clean;
2216 we just need to drop our ref */
2217 class_export_put(mds->mds_osc_exp);
2219 lprocfs_obd_cleanup(obd);
2220 lprocfs_free_obd_stats(obd);
2222 lquota_cleanup(mds_quota_interface_ref, obd);
2224 mds_update_server_data(obd, 1);
2225 if (mds->mds_lov_objids != NULL)
2226 OBD_FREE(mds->mds_lov_objids, mds->mds_lov_objids_size);
2227 mds_fs_cleanup(obd);
2229 upcall_cache_cleanup(mds->mds_group_hash);
2230 mds->mds_group_hash = NULL;
2232 server_put_mount(obd->obd_name, mds->mds_vfsmnt);
2233 obd->u.obt.obt_sb = NULL;
2235 ldlm_namespace_free(obd->obd_namespace, obd->obd_force);
2237 spin_lock_bh(&obd->obd_processing_task_lock);
2238 if (obd->obd_recovering) {
2239 target_cancel_recovery_timer(obd);
2240 obd->obd_recovering = 0;
2242 spin_unlock_bh(&obd->obd_processing_task_lock);
2244 fsfilt_put_ops(obd->obd_fsops);
2246 LCONSOLE_INFO("MDT %s has stopped.\n", obd->obd_name);
2251 static void fixup_handle_for_resent_req(struct ptlrpc_request *req, int offset,
2252 struct ldlm_lock *new_lock,
2253 struct ldlm_lock **old_lock,
2254 struct lustre_handle *lockh)
2256 struct obd_export *exp = req->rq_export;
2257 struct ldlm_request *dlmreq =
2258 lustre_msg_buf(req->rq_reqmsg, offset, sizeof(*dlmreq));
2259 struct lustre_handle remote_hdl = dlmreq->lock_handle1;
2260 struct list_head *iter;
2262 if (!(lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT))
2265 spin_lock(&exp->exp_ldlm_data.led_lock);
2266 list_for_each(iter, &exp->exp_ldlm_data.led_held_locks) {
2267 struct ldlm_lock *lock;
2268 lock = list_entry(iter, struct ldlm_lock, l_export_chain);
2269 if (lock == new_lock)
2271 if (lock->l_remote_handle.cookie == remote_hdl.cookie) {
2272 lockh->cookie = lock->l_handle.h_cookie;
2273 LDLM_DEBUG(lock, "restoring lock cookie");
2274 DEBUG_REQ(D_HA, req, "restoring lock cookie "LPX64,
2277 *old_lock = LDLM_LOCK_GET(lock);
2278 spin_unlock(&exp->exp_ldlm_data.led_lock);
2282 spin_unlock(&exp->exp_ldlm_data.led_lock);
2284 /* If the xid matches, then we know this is a resent request,
2285 * and allow it. (It's probably an OPEN, for which we don't
2288 le64_to_cpu(exp->exp_mds_data.med_mcd->mcd_last_xid))
2292 le64_to_cpu(exp->exp_mds_data.med_mcd->mcd_last_close_xid))
2295 /* This remote handle isn't enqueued, so we never received or
2296 * processed this request. Clear MSG_RESENT, because it can
2297 * be handled like any normal request now. */
2299 lustre_msg_clear_flags(req->rq_reqmsg, MSG_RESENT);
2301 DEBUG_REQ(D_HA, req, "no existing lock with rhandle "LPX64,
2305 int intent_disposition(struct ldlm_reply *rep, int flag)
2309 return (rep->lock_policy_res1 & flag);
2312 void intent_set_disposition(struct ldlm_reply *rep, int flag)
2316 rep->lock_policy_res1 |= flag;
2319 static int mds_intent_policy(struct ldlm_namespace *ns,
2320 struct ldlm_lock **lockp, void *req_cookie,
2321 ldlm_mode_t mode, int flags, void *data)
2323 struct ptlrpc_request *req = req_cookie;
2324 struct ldlm_lock *lock = *lockp;
2325 struct ldlm_intent *it;
2326 struct mds_obd *mds = &req->rq_export->exp_obd->u.mds;
2327 struct ldlm_reply *rep;
2328 struct lustre_handle lockh = { 0 };
2329 struct ldlm_lock *new_lock = NULL;
2330 int getattr_part = MDS_INODELOCK_UPDATE;
2331 int repsize[5] = { [MSG_PTLRPC_BODY_OFF] = sizeof(struct ptlrpc_body),
2332 [DLM_LOCKREPLY_OFF] = sizeof(struct ldlm_reply),
2333 [DLM_REPLY_REC_OFF] = sizeof(struct mds_body),
2334 [DLM_REPLY_REC_OFF+1] = mds->mds_max_mdsize };
2335 int repbufcnt = 4, rc;
2338 LASSERT(req != NULL);
2340 if (lustre_msg_bufcount(req->rq_reqmsg) <= DLM_INTENT_IT_OFF) {
2341 /* No intent was provided */
2342 rc = lustre_pack_reply(req, 2, repsize, NULL);
2347 it = lustre_swab_reqbuf(req, DLM_INTENT_IT_OFF, sizeof(*it),
2348 lustre_swab_ldlm_intent);
2350 CERROR("Intent missing\n");
2351 RETURN(req->rq_status = -EFAULT);
2354 LDLM_DEBUG(lock, "intent policy, opc: %s", ldlm_it2str(it->opc));
2356 if ((req->rq_export->exp_connect_flags & OBD_CONNECT_ACL) &&
2357 (it->opc & (IT_OPEN | IT_GETATTR | IT_LOOKUP)))
2358 /* we should never allow OBD_CONNECT_ACL if not configured */
2359 repsize[repbufcnt++] = LUSTRE_POSIX_ACL_MAX_SIZE;
2360 else if (it->opc & IT_UNLINK)
2361 repsize[repbufcnt++] = mds->mds_max_cookiesize;
2363 rc = lustre_pack_reply(req, repbufcnt, repsize, NULL);
2365 RETURN(req->rq_status = rc);
2367 rep = lustre_msg_buf(req->rq_repmsg, DLM_LOCKREPLY_OFF, sizeof(*rep));
2368 intent_set_disposition(rep, DISP_IT_EXECD);
2371 /* execute policy */
2372 switch ((long)it->opc) {
2374 case IT_CREAT|IT_OPEN:
2375 mds_counter_incr(req->rq_export, LPROC_MDS_OPEN);
2376 fixup_handle_for_resent_req(req, DLM_LOCKREQ_OFF, lock, NULL,
2378 /* XXX swab here to assert that an mds_open reint
2379 * packet is following */
2380 rep->lock_policy_res2 = mds_reint(req, DLM_INTENT_REC_OFF,
2383 /* We abort the lock if the lookup was negative and
2384 * we did not make it to the OPEN portion */
2385 if (!intent_disposition(rep, DISP_LOOKUP_EXECD))
2386 RETURN(ELDLM_LOCK_ABORTED);
2387 if (intent_disposition(rep, DISP_LOOKUP_NEG) &&
2388 !intent_disposition(rep, DISP_OPEN_OPEN))
2391 /* If there was an error of some sort or if we are not
2392 * returning any locks */
2393 if (rep->lock_policy_res2 ||
2394 !intent_disposition(rep, DISP_OPEN_LOCK))
2395 RETURN(ELDLM_LOCK_ABORTED);
2398 getattr_part = MDS_INODELOCK_LOOKUP;
2400 getattr_part |= MDS_INODELOCK_LOOKUP;
2401 OBD_COUNTER_INCREMENT(req->rq_export->exp_obd, getattr);
2403 fixup_handle_for_resent_req(req, DLM_LOCKREQ_OFF, lock,
2406 /* INODEBITS_INTEROP: if this lock was converted from a
2407 * plain lock (client does not support inodebits), then
2408 * child lock must be taken with both lookup and update
2409 * bits set for all operations.
2411 if (!(req->rq_export->exp_connect_flags & OBD_CONNECT_IBITS))
2412 getattr_part = MDS_INODELOCK_LOOKUP |
2413 MDS_INODELOCK_UPDATE;
2415 rep->lock_policy_res2 = mds_getattr_lock(req,DLM_INTENT_REC_OFF,
2416 getattr_part, &lockh);
2417 /* FIXME: LDLM can set req->rq_status. MDS sets
2418 policy_res{1,2} with disposition and status.
2419 - replay: returns 0 & req->status is old status
2420 - otherwise: returns req->status */
2421 if (intent_disposition(rep, DISP_LOOKUP_NEG))
2422 rep->lock_policy_res2 = 0;
2423 if (!intent_disposition(rep, DISP_LOOKUP_POS) ||
2424 rep->lock_policy_res2)
2425 RETURN(ELDLM_LOCK_ABORTED);
2426 if (req->rq_status != 0) {
2428 rep->lock_policy_res2 = req->rq_status;
2429 RETURN(ELDLM_LOCK_ABORTED);
2433 CERROR("Unhandled intent "LPD64"\n", it->opc);
2437 /* By this point, whatever function we called above must have either
2438 * filled in 'lockh', been an intent replay, or returned an error. We
2439 * want to allow replayed RPCs to not get a lock, since we would just
2440 * drop it below anyways because lock replay is done separately by the
2441 * client afterwards. For regular RPCs we want to give the new lock to
2442 * the client instead of whatever lock it was about to get. */
2443 if (new_lock == NULL)
2444 new_lock = ldlm_handle2lock(&lockh);
2445 if (new_lock == NULL && (flags & LDLM_FL_INTENT_ONLY))
2448 LASSERTF(new_lock != NULL, "op "LPX64" lockh "LPX64"\n",
2449 it->opc, lockh.cookie);
2451 /* If we've already given this lock to a client once, then we should
2452 * have no readers or writers. Otherwise, we should have one reader
2453 * _or_ writer ref (which will be zeroed below) before returning the
2454 * lock to a client. */
2455 if (new_lock->l_export == req->rq_export) {
2456 LASSERT(new_lock->l_readers + new_lock->l_writers == 0);
2458 LASSERT(new_lock->l_export == NULL);
2459 LASSERT(new_lock->l_readers + new_lock->l_writers == 1);
2464 if (new_lock->l_export == req->rq_export) {
2465 /* Already gave this to the client, which means that we
2466 * reconstructed a reply. */
2467 LASSERT(lustre_msg_get_flags(req->rq_reqmsg) &
2469 RETURN(ELDLM_LOCK_REPLACED);
2472 /* Fixup the lock to be given to the client */
2473 lock_res_and_lock(new_lock);
2474 new_lock->l_readers = 0;
2475 new_lock->l_writers = 0;
2477 new_lock->l_export = class_export_get(req->rq_export);
2478 spin_lock(&req->rq_export->exp_ldlm_data.led_lock);
2479 list_add(&new_lock->l_export_chain,
2480 &new_lock->l_export->exp_ldlm_data.led_held_locks);
2481 spin_unlock(&req->rq_export->exp_ldlm_data.led_lock);
2483 new_lock->l_blocking_ast = lock->l_blocking_ast;
2484 new_lock->l_completion_ast = lock->l_completion_ast;
2486 memcpy(&new_lock->l_remote_handle, &lock->l_remote_handle,
2487 sizeof(lock->l_remote_handle));
2489 new_lock->l_flags &= ~LDLM_FL_LOCAL;
2491 unlock_res_and_lock(new_lock);
2492 LDLM_LOCK_PUT(new_lock);
2494 RETURN(ELDLM_LOCK_REPLACED);
2497 static int mdt_setup(struct obd_device *obd, obd_count len, void *buf)
2499 struct mds_obd *mds = &obd->u.mds;
2500 struct lprocfs_static_vars lvars;
2501 int mds_min_threads;
2502 int mds_max_threads;
2506 lprocfs_init_vars(mdt, &lvars);
2507 lprocfs_obd_setup(obd, lvars.obd_vars);
2509 sema_init(&mds->mds_health_sem, 1);
2511 if (mds_num_threads) {
2512 /* If mds_num_threads is set, it is the min and the max. */
2513 if (mds_num_threads > MDS_THREADS_MAX)
2514 mds_num_threads = MDS_THREADS_MAX;
2515 if (mds_num_threads < MDS_THREADS_MIN)
2516 mds_num_threads = MDS_THREADS_MIN;
2517 mds_max_threads = mds_min_threads = mds_num_threads;
2519 /* Base min threads on memory and cpus */
2520 mds_min_threads = smp_num_cpus * num_physpages >>
2521 (27 - CFS_PAGE_SHIFT);
2522 if (mds_min_threads < MDS_THREADS_MIN)
2523 mds_min_threads = MDS_THREADS_MIN;
2524 /* Largest auto threads start value */
2525 if (mds_min_threads > 32)
2526 mds_min_threads = 32;
2527 mds_max_threads = min(MDS_THREADS_MAX, mds_min_threads * 4);
2531 ptlrpc_init_svc(MDS_NBUFS, MDS_BUFSIZE, MDS_MAXREQSIZE,
2532 MDS_MAXREPSIZE, MDS_REQUEST_PORTAL,
2533 MDC_REPLY_PORTAL, MDS_SERVICE_WATCHDOG_TIMEOUT,
2534 mds_handle, LUSTRE_MDS_NAME,
2535 obd->obd_proc_entry, NULL,
2536 mds_min_threads, mds_max_threads, "ll_mdt");
2538 if (!mds->mds_service) {
2539 CERROR("failed to start service\n");
2540 GOTO(err_lprocfs, rc = -ENOMEM);
2543 rc = ptlrpc_start_threads(obd, mds->mds_service);
2545 GOTO(err_thread, rc);
2547 mds->mds_setattr_service =
2548 ptlrpc_init_svc(MDS_NBUFS, MDS_BUFSIZE, MDS_MAXREQSIZE,
2549 MDS_MAXREPSIZE, MDS_SETATTR_PORTAL,
2550 MDC_REPLY_PORTAL, MDS_SERVICE_WATCHDOG_TIMEOUT,
2551 mds_handle, "mds_setattr",
2552 obd->obd_proc_entry, NULL,
2553 mds_min_threads, mds_max_threads,
2555 if (!mds->mds_setattr_service) {
2556 CERROR("failed to start getattr service\n");
2557 GOTO(err_thread, rc = -ENOMEM);
2560 rc = ptlrpc_start_threads(obd, mds->mds_setattr_service);
2562 GOTO(err_thread2, rc);
2564 mds->mds_readpage_service =
2565 ptlrpc_init_svc(MDS_NBUFS, MDS_BUFSIZE, MDS_MAXREQSIZE,
2566 MDS_MAXREPSIZE, MDS_READPAGE_PORTAL,
2567 MDC_REPLY_PORTAL, MDS_SERVICE_WATCHDOG_TIMEOUT,
2568 mds_handle, "mds_readpage",
2569 obd->obd_proc_entry, NULL,
2570 MDS_THREADS_MIN_READPAGE, mds_max_threads,
2572 if (!mds->mds_readpage_service) {
2573 CERROR("failed to start readpage service\n");
2574 GOTO(err_thread2, rc = -ENOMEM);
2577 rc = ptlrpc_start_threads(obd, mds->mds_readpage_service);
2580 GOTO(err_thread3, rc);
2582 ping_evictor_start();
2587 ptlrpc_unregister_service(mds->mds_readpage_service);
2588 mds->mds_readpage_service = NULL;
2590 ptlrpc_unregister_service(mds->mds_setattr_service);
2591 mds->mds_setattr_service = NULL;
2593 ptlrpc_unregister_service(mds->mds_service);
2594 mds->mds_service = NULL;
2596 lprocfs_obd_cleanup(obd);
2600 static int mdt_cleanup(struct obd_device *obd)
2602 struct mds_obd *mds = &obd->u.mds;
2605 ping_evictor_stop();
2607 down(&mds->mds_health_sem);
2608 ptlrpc_unregister_service(mds->mds_readpage_service);
2609 ptlrpc_unregister_service(mds->mds_setattr_service);
2610 ptlrpc_unregister_service(mds->mds_service);
2611 mds->mds_readpage_service = NULL;
2612 mds->mds_setattr_service = NULL;
2613 mds->mds_service = NULL;
2614 up(&mds->mds_health_sem);
2616 lprocfs_obd_cleanup(obd);
2621 static int mdt_health_check(struct obd_device *obd)
2623 struct mds_obd *mds = &obd->u.mds;
2626 down(&mds->mds_health_sem);
2627 rc |= ptlrpc_service_health_check(mds->mds_readpage_service);
2628 rc |= ptlrpc_service_health_check(mds->mds_setattr_service);
2629 rc |= ptlrpc_service_health_check(mds->mds_service);
2630 up(&mds->mds_health_sem);
2633 * health_check to return 0 on healthy
2634 * and 1 on unhealthy.
2642 static struct dentry *mds_lvfs_fid2dentry(__u64 id, __u32 gen, __u64 gr,
2645 struct obd_device *obd = data;
2648 fid.generation = gen;
2649 return mds_fid2dentry(&obd->u.mds, &fid, NULL);
2652 static int mds_health_check(struct obd_device *obd)
2654 struct obd_device_target *odt = &obd->u.obt;
2655 struct mds_obd *mds = &obd->u.mds;
2658 if (odt->obt_sb->s_flags & MS_RDONLY)
2661 LASSERT(mds->mds_health_check_filp != NULL);
2662 rc |= !!lvfs_check_io_health(obd, mds->mds_health_check_filp);
2667 static int mds_process_config(struct obd_device *obd, obd_count len, void *buf)
2669 struct lustre_cfg *lcfg = buf;
2670 struct lprocfs_static_vars lvars;
2673 lprocfs_init_vars(mds, &lvars);
2675 rc = class_process_proc_param(PARAM_MDT, lvars.obd_vars, lcfg, obd);
2680 struct lvfs_callback_ops mds_lvfs_ops = {
2681 l_fid2dentry: mds_lvfs_fid2dentry,
2684 /* use obd ops to offer management infrastructure */
2685 static struct obd_ops mds_obd_ops = {
2686 .o_owner = THIS_MODULE,
2687 .o_connect = mds_connect,
2688 .o_reconnect = mds_reconnect,
2689 .o_init_export = mds_init_export,
2690 .o_destroy_export = mds_destroy_export,
2691 .o_disconnect = mds_disconnect,
2692 .o_setup = mds_setup,
2693 .o_precleanup = mds_precleanup,
2694 .o_cleanup = mds_cleanup,
2695 .o_postrecov = mds_postrecov,
2696 .o_statfs = mds_obd_statfs,
2697 .o_iocontrol = mds_iocontrol,
2698 .o_create = mds_obd_create,
2699 .o_destroy = mds_obd_destroy,
2700 .o_llog_init = mds_llog_init,
2701 .o_llog_finish = mds_llog_finish,
2702 .o_notify = mds_notify,
2703 .o_health_check = mds_health_check,
2704 .o_process_config = mds_process_config,
2707 static struct obd_ops mdt_obd_ops = {
2708 .o_owner = THIS_MODULE,
2709 .o_setup = mdt_setup,
2710 .o_cleanup = mdt_cleanup,
2711 .o_health_check = mdt_health_check,
2714 quota_interface_t *mds_quota_interface_ref;
2715 extern quota_interface_t mds_quota_interface;
2717 static int __init mds_init(void)
2720 struct lprocfs_static_vars lvars;
2722 request_module("lquota");
2723 mds_quota_interface_ref = PORTAL_SYMBOL_GET(mds_quota_interface);
2724 rc = lquota_init(mds_quota_interface_ref);
2726 if (mds_quota_interface_ref)
2727 PORTAL_SYMBOL_PUT(mds_quota_interface);
2730 init_obd_quota_ops(mds_quota_interface_ref, &mds_obd_ops);
2732 lprocfs_init_vars(mds, &lvars);
2733 class_register_type(&mds_obd_ops, lvars.module_vars, LUSTRE_MDS_NAME);
2734 lprocfs_init_vars(mdt, &lvars);
2735 class_register_type(&mdt_obd_ops, lvars.module_vars, LUSTRE_MDT_NAME);
2740 static void /*__exit*/ mds_exit(void)
2742 lquota_exit(mds_quota_interface_ref);
2743 if (mds_quota_interface_ref)
2744 PORTAL_SYMBOL_PUT(mds_quota_interface);
2746 class_unregister_type(LUSTRE_MDS_NAME);
2747 class_unregister_type(LUSTRE_MDT_NAME);
2750 MODULE_AUTHOR("Cluster File Systems, Inc. <info@clusterfs.com>");
2751 MODULE_DESCRIPTION("Lustre Metadata Server (MDS)");
2752 MODULE_LICENSE("GPL");
2754 module_init(mds_init);
2755 module_exit(mds_exit);