1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
4 * Copyright (C) 2001-2004 Cluster File Systems, Inc.
6 * This file is part of Lustre, http://www.sf.net/projects/lustre/
8 * Lustre is free software; you can redistribute it and/or
9 * modify it under the terms of version 2 of the GNU General Public
10 * License as published by the Free Software Foundation.
12 * Lustre is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with Lustre; if not, write to the Free Software
19 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23 # define EXPORT_SYMTAB
25 #define DEBUG_SUBSYSTEM S_MDC
28 # include <linux/module.h>
29 # include <linux/pagemap.h>
30 # include <linux/miscdevice.h>
31 # include <linux/init.h>
33 # include <liblustre.h>
36 #include <linux/obd_class.h>
37 #include <linux/lustre_mds.h>
38 #include <linux/lustre_dlm.h>
39 #include <linux/lustre_sec.h>
40 #include <linux/lprocfs_status.h>
41 #include <linux/lustre_acl.h>
42 #include "mdc_internal.h"
44 #define REQUEST_MINOR 244
46 static int mdc_cleanup(struct obd_device *obd, int flags);
48 extern int mds_queue_req(struct ptlrpc_request *);
49 /* Helper that implements most of mdc_getstatus and signal_completed_replay. */
50 /* XXX this should become mdc_get_info("key"), sending MDS_GET_INFO RPC */
51 static int send_getstatus(struct obd_import *imp, struct lustre_id *rootid,
52 int level, int msg_flags)
54 struct ptlrpc_request *req;
55 struct mds_body *body;
56 int rc, size[2] = {0, sizeof(*body)};
59 //size[0] = lustre_secdesc_size();
61 req = ptlrpc_prep_req(imp, LUSTRE_MDS_VERSION, MDS_GETSTATUS,
64 GOTO(out, rc = -ENOMEM);
66 //lustre_pack_secdesc(req, size[0]);
68 body = lustre_msg_buf(req->rq_reqmsg, MDS_REQ_REC_OFF, sizeof (*body));
69 req->rq_send_state = level;
70 req->rq_replen = lustre_msg_size(1, &size[1]);
72 req->rq_reqmsg->flags |= msg_flags;
73 rc = ptlrpc_queue_wait(req);
76 body = lustre_swab_repbuf (req, 0, sizeof (*body),
77 lustre_swab_mds_body);
79 CERROR ("Can't extract mds_body\n");
80 GOTO (out, rc = -EPROTO);
83 memcpy(rootid, &body->id1, sizeof(*rootid));
85 CDEBUG(D_NET, "root ino="LPU64", last_committed="LPU64
86 ", last_xid="LPU64"\n", rootid->li_stc.u.e3s.l3s_ino,
87 req->rq_repmsg->last_committed, req->rq_repmsg->last_xid);
92 ptlrpc_req_finished(req);
96 /* This should be mdc_get_info("rootid") */
97 int mdc_getstatus(struct obd_export *exp, struct lustre_id *rootid)
99 return send_getstatus(class_exp2cliimp(exp), rootid,
103 int mdc_getattr_common(struct obd_export *exp, unsigned int ea_size,
104 struct ptlrpc_request *req)
106 struct mds_body *body, *reqbody;
109 int repsize[4] = {sizeof(*body)};
113 /* request message already built */
116 repsize[bufcount++] = ea_size;
117 CDEBUG(D_INODE, "reserved %u bytes for MD/symlink in packet\n",
121 reqbody = lustre_msg_buf(req->rq_reqmsg, 1, sizeof(*reqbody));
123 if (reqbody->valid & OBD_MD_FLACL_ACCESS) {
124 repsize[bufcount++] = 4;
125 repsize[bufcount++] = xattr_acl_size(LL_ACL_MAX_ENTRIES);
128 req->rq_replen = lustre_msg_size(bufcount, repsize);
130 mdc_get_rpc_lock(exp->exp_obd->u.cli.cl_rpc_lock, NULL);
131 rc = ptlrpc_queue_wait(req);
132 mdc_put_rpc_lock(exp->exp_obd->u.cli.cl_rpc_lock, NULL);
136 body = lustre_swab_repbuf (req, 0, sizeof (*body),
137 lustre_swab_mds_body);
139 CERROR ("Can't unpack mds_body\n");
143 CDEBUG(D_NET, "mode: %o\n", body->mode);
145 LASSERT_REPSWAB (req, 1);
147 /* Skip the check if getxattr/listxattr are called with no buffers */
148 if ((reqbody->valid & (OBD_MD_FLEA | OBD_MD_FLEALIST)) &&
149 (reqbody->eadatasize != 0)){
150 if (body->eadatasize != 0) {
151 /* reply indicates presence of eadata; check it's there... */
152 eadata = lustre_msg_buf (req->rq_repmsg, 1,
154 if (eadata == NULL) {
155 CERROR ("Missing/short eadata\n");
164 static int mdc_cancel_unused(struct obd_export *exp,
165 struct lov_stripe_md *lsm,
166 int flags, void *opaque)
168 struct obd_device *obd = class_exp2obd(exp);
171 RETURN(ldlm_cli_cancel_unused(obd->obd_namespace,
172 NULL, flags, opaque));
175 int mdc_getattr(struct obd_export *exp, struct lustre_id *id,
176 __u64 valid, const char *ea_name, int ea_namelen,
177 unsigned int ea_size, struct ptlrpc_request **request)
179 struct ptlrpc_request *req;
180 struct mds_body *body;
182 int size[3] = {0, sizeof(*body)};
186 /* XXX do we need to make another request here? We just did a getattr
187 * to do the lookup in the first place.
189 size[0] = lustre_secdesc_size();
191 LASSERT((ea_name != NULL) == (ea_namelen != 0));
192 if (valid & (OBD_MD_FLEA | OBD_MD_FLEALIST)) {
193 size[bufcount] = ea_namelen;
197 req = ptlrpc_prep_req(class_exp2cliimp(exp), LUSTRE_MDS_VERSION,
198 MDS_GETATTR, bufcount, size, NULL);
200 GOTO(out, rc = -ENOMEM);
202 lustre_pack_secdesc(req, size[0]);
204 body = lustre_msg_buf(req->rq_reqmsg, MDS_REQ_REC_OFF, sizeof (*body));
205 memcpy(&body->id1, id, sizeof(*id));
207 body->eadatasize = ea_size;
210 if (valid & OBD_MD_FLEA) {
211 LASSERT(strnlen(ea_name, ea_namelen) == (ea_namelen - 1));
212 memcpy(lustre_msg_buf(req->rq_reqmsg, 2, ea_namelen),
213 ea_name, ea_namelen);
216 rc = mdc_getattr_common(exp, ea_size, req);
218 ptlrpc_req_finished (req);
226 int mdc_getattr_lock(struct obd_export *exp, struct lustre_id *id,
227 char *filename, int namelen, __u64 valid,
228 unsigned int ea_size, struct ptlrpc_request **request)
230 struct ptlrpc_request *req;
231 struct mds_body *body;
232 int rc, size[3] = {0, sizeof(*body), namelen};
235 size[0] = lustre_secdesc_size();
237 req = ptlrpc_prep_req(class_exp2cliimp(exp), LUSTRE_MDS_VERSION,
238 MDS_GETATTR_LOCK, 3, size, NULL);
240 GOTO(out, rc = -ENOMEM);
242 lustre_pack_secdesc(req, size[0]);
244 body = lustre_msg_buf(req->rq_reqmsg, MDS_REQ_REC_OFF, sizeof (*body));
245 memcpy(&body->id1, id, sizeof(*id));
247 body->eadatasize = ea_size;
249 if (filename != NULL) {
250 LASSERT (strnlen (filename, namelen) == namelen - 1);
251 memcpy(lustre_msg_buf(req->rq_reqmsg, 2, namelen),
254 LASSERT(namelen == 1);
257 rc = mdc_getattr_common(exp, ea_size, req);
259 ptlrpc_req_finished (req);
267 /* This should be called with both the request and the reply still packed. */
268 int mdc_store_inode_generation(struct obd_export *exp,
269 struct ptlrpc_request *req,
270 int reqoff, int repoff)
272 struct mds_rec_create *rec =
273 lustre_msg_buf(req->rq_reqmsg, reqoff, sizeof(*rec));
274 struct mds_body *body =
275 lustre_msg_buf(req->rq_repmsg, repoff, sizeof(*body));
277 LASSERT (rec != NULL);
278 LASSERT (body != NULL);
280 memcpy(&rec->cr_replayid, &body->id1, sizeof(rec->cr_replayid));
281 DEBUG_REQ(D_HA, req, "storing generation for ino "DLID4,
282 OLID4(&rec->cr_replayid));
286 int mdc_req2lustre_md(struct obd_export *exp_lmv, struct ptlrpc_request *req,
287 unsigned int offset, struct obd_export *exp_lov,
288 struct lustre_md *md)
293 struct posix_acl *acl;
294 struct lov_mds_md *lmm;
298 memset(md, 0, sizeof(*md));
300 md->body = lustre_msg_buf(req->rq_repmsg, offset,
305 LASSERT_REPSWABBED(req, offset);
307 if (!(md->body->valid & OBD_MD_FLEASIZE) &&
308 !(md->body->valid & OBD_MD_FLDIREA))
311 if (S_ISREG(md->body->mode)) {
312 if (md->body->eadatasize == 0) {
313 CERROR("invalid EA size (0) is detected\n");
317 lmm = lustre_msg_buf(req->rq_repmsg, offset + 1,
318 md->body->eadatasize);
322 LASSERT(exp_lov != NULL);
324 rc = obd_unpackmd(exp_lov, &md->lsm, lmm,
325 md->body->eadatasize);
327 LASSERT(rc >= sizeof(*md->lsm));
330 } else if (S_ISDIR(md->body->mode)) {
331 /* dir can be non-splitted */
332 if (md->body->eadatasize == 0)
335 lmm = lustre_msg_buf(req->rq_repmsg, offset + 1,
336 md->body->eadatasize);
340 if (md->body->valid & OBD_MD_MEA) {
341 LASSERT(exp_lmv != NULL);
343 rc = obd_unpackmd(exp_lmv, (void *)&md->mea,
344 lmm, md->body->eadatasize);
346 LASSERT(rc >= sizeof(*md->mea));
351 LASSERT(S_ISCHR(md->body->mode) ||
352 S_ISBLK(md->body->mode) ||
353 S_ISFIFO(md->body->mode)||
354 S_ISLNK(md->body->mode) ||
355 S_ISSOCK(md->body->mode));
358 acl_off = (md->body->valid & OBD_MD_FLEASIZE) ? (offset + 2) :
361 if (md->body->valid & OBD_MD_FLACL_ACCESS) {
362 size = le32_to_cpu(*(__u32 *) lustre_msg_buf(req->rq_repmsg,
364 buf = lustre_msg_buf(req->rq_repmsg, acl_off + 1, size);
366 acl = posix_acl_from_xattr(buf, size);
369 CERROR("convert xattr to acl failed: %d\n", rc);
372 rc = posix_acl_valid(acl);
374 CERROR("acl valid error: %d\n", rc);
375 posix_acl_release(acl);
380 md->acl_access = acl;
385 static void mdc_commit_open(struct ptlrpc_request *req)
387 struct mdc_open_data *mod = req->rq_cb_data;
391 if (mod->mod_close_req != NULL)
392 mod->mod_close_req->rq_cb_data = NULL;
394 if (mod->mod_och != NULL)
395 mod->mod_och->och_mod = NULL;
397 OBD_FREE(mod, sizeof(*mod));
398 req->rq_cb_data = NULL;
401 static void mdc_replay_open(struct ptlrpc_request *req)
403 struct mdc_open_data *mod = req->rq_cb_data;
404 struct obd_client_handle *och;
405 struct ptlrpc_request *close_req;
406 struct lustre_handle old;
407 struct mds_body *body;
410 body = lustre_swab_repbuf(req, 1, sizeof(*body), lustre_swab_mds_body);
411 LASSERT (body != NULL);
414 DEBUG_REQ(D_ERROR, req,
415 "can't properly replay without open data");
422 struct lustre_handle *file_fh;
423 LASSERT(och->och_magic == OBD_CLIENT_HANDLE_MAGIC);
424 file_fh = &och->och_fh;
425 CDEBUG(D_HA, "updating handle from "LPX64" to "LPX64"\n",
426 file_fh->cookie, body->handle.cookie);
427 memcpy(&old, file_fh, sizeof(old));
428 memcpy(file_fh, &body->handle, sizeof(*file_fh));
431 close_req = mod->mod_close_req;
432 if (close_req != NULL) {
433 struct mds_body *close_body;
434 LASSERT(close_req->rq_reqmsg->opc == MDS_CLOSE);
435 close_body = lustre_msg_buf(close_req->rq_reqmsg,
437 sizeof(*close_body));
439 LASSERT(!memcmp(&old, &close_body->handle, sizeof old));
440 DEBUG_REQ(D_HA, close_req, "updating close body with new fh");
441 memcpy(&close_body->handle, &body->handle,
442 sizeof(close_body->handle));
448 int mdc_set_open_replay_data(struct obd_export *exp,
449 struct obd_client_handle *och,
450 struct ptlrpc_request *open_req)
452 struct mdc_open_data *mod;
453 struct mds_rec_create *rec;
454 struct mds_body *body;
456 rec = lustre_msg_buf(open_req->rq_reqmsg, MDS_REQ_INTENT_REC_OFF,
458 body = lustre_msg_buf(open_req->rq_repmsg, 1, sizeof(*body));
460 LASSERT(rec != NULL);
461 /* outgoing messages always in my byte order */
462 LASSERT(body != NULL);
463 /* incoming message in my byte order (it's been swabbed) */
464 LASSERT_REPSWABBED(open_req, 1);
466 OBD_ALLOC(mod, sizeof(*mod));
468 DEBUG_REQ(D_ERROR, open_req, "can't allocate mdc_open_data");
474 mod->mod_open_req = open_req;
476 memcpy(&rec->cr_replayid, &body->id1, sizeof rec->cr_replayid);
477 open_req->rq_replay_cb = mdc_replay_open;
478 open_req->rq_commit_cb = mdc_commit_open;
479 open_req->rq_cb_data = mod;
480 DEBUG_REQ(D_HA, open_req, "set up replay data");
484 int mdc_clear_open_replay_data(struct obd_export *exp,
485 struct obd_client_handle *och)
487 struct mdc_open_data *mod = och->och_mod;
489 /* Don't free the structure now (it happens in mdc_commit_open, after
490 * we're sure we won't need to fix up the close request in the future),
491 * but make sure that replay doesn't poke at the och, which is about to
493 LASSERT(mod != LP_POISON);
500 static void mdc_commit_close(struct ptlrpc_request *req)
502 struct mdc_open_data *mod = req->rq_cb_data;
503 struct ptlrpc_request *open_req;
504 struct obd_import *imp = req->rq_import;
506 DEBUG_REQ(D_HA, req, "close req committed");
510 mod->mod_close_req = NULL;
511 req->rq_cb_data = NULL;
512 req->rq_commit_cb = NULL;
514 open_req = mod->mod_open_req;
515 LASSERT(open_req != NULL);
516 LASSERT(open_req != LP_POISON);
517 LASSERT(open_req->rq_type != LI_POISON);
519 DEBUG_REQ(D_HA, open_req, "open req balanced");
520 if (open_req->rq_transno == 0) {
521 DEBUG_REQ(D_ERROR, open_req, "BUG 3892 open");
522 DEBUG_REQ(D_ERROR, req, "BUG 3892 close");
523 LASSERTF(open_req->rq_transno != 0, "BUG 3892");
525 LASSERT(open_req->rq_import == imp);
527 /* We no longer want to preserve this for transno-unconditional
529 spin_lock(&open_req->rq_lock);
530 open_req->rq_replay = 0;
531 spin_unlock(&open_req->rq_lock);
534 static int mdc_close_interpret(struct ptlrpc_request *req,
537 union ptlrpc_async_args *aa = data;
538 struct mdc_rpc_lock *close_lock;
539 struct obd_device *obd = aa->pointer_arg[1];
542 spin_lock_irqsave(&req->rq_lock, flags);
543 close_lock = aa->pointer_arg[0];
544 aa->pointer_arg[0] = NULL;
545 spin_unlock_irqrestore (&req->rq_lock, flags);
547 if (close_lock == NULL) {
548 CERROR("called with NULL close_lock\n");
550 mdc_put_rpc_lock(close_lock, NULL);
551 LASSERTF(close_lock == obd->u.cli.cl_close_lock, "%p != %p\n",
552 close_lock, obd->u.cli.cl_close_lock);
554 wake_up(&req->rq_reply_waitq);
558 /* We can't use ptlrpc_check_reply, because we don't want to wake up for
559 * anything but a reply or an error. */
560 static int mdc_close_check_reply(struct ptlrpc_request *req)
565 spin_lock_irqsave(&req->rq_lock, flags);
566 if (req->rq_async_args.pointer_arg[0] == NULL)
568 spin_unlock_irqrestore (&req->rq_lock, flags);
572 int mdc_close(struct obd_export *exp, struct obdo *oa,
573 struct obd_client_handle *och,
574 struct ptlrpc_request **request)
576 struct obd_device *obd = class_exp2obd(exp);
577 struct obd_import *imp = class_exp2cliimp(exp);
578 int reqsize[3] = {0, sizeof(struct mds_body),
579 obd->u.cli.cl_max_mds_cookiesize};
580 int rc, repsize[3] = {sizeof(struct mds_body),
581 obd->u.cli.cl_max_mds_easize,
582 obd->u.cli.cl_max_mds_cookiesize};
583 struct ptlrpc_request *req;
584 struct mdc_open_data *mod;
585 struct l_wait_info lwi;
588 if (imp->imp_connection == NULL) {
589 CERROR("request on not connected import %s\n",
590 imp->imp_obd->obd_name);
594 req = ptlrpc_prep_req(class_exp2cliimp(exp), LUSTRE_MDS_VERSION,
595 MDS_CLOSE, 3, reqsize, NULL);
597 GOTO(out, rc = -ENOMEM);
599 //reqsize[0] = lustre_secdesc_size();
600 //lustre_pack_secdesc(req, reqsize[0]);
602 /* Ensure that this close's handle is fixed up during replay. */
603 LASSERT(och != NULL);
605 if (likely(mod != NULL)) {
606 mod->mod_close_req = req;
607 LASSERT(mod->mod_open_req->rq_type != LI_POISON);
608 DEBUG_REQ(D_HA, mod->mod_open_req, "matched open");
610 CDEBUG(D_HA, "couldn't find open req; "
611 "expecting close error\n");
614 mdc_close_pack(req, 1, oa, oa->o_valid, och);
616 req->rq_replen = lustre_msg_size(3, repsize);
617 req->rq_commit_cb = mdc_commit_close;
618 LASSERT(req->rq_cb_data == NULL);
619 req->rq_cb_data = mod;
621 /* We hand a ref to the rpcd here, so we need another one of our own. */
622 ptlrpc_request_addref(req);
624 mdc_get_rpc_lock(obd->u.cli.cl_close_lock, NULL);
625 req->rq_interpret_reply = mdc_close_interpret;
626 req->rq_async_args.pointer_arg[0] = obd->u.cli.cl_close_lock;
627 req->rq_async_args.pointer_arg[1] = obd;
628 ptlrpcd_add_req(req);
630 lwi = LWI_TIMEOUT_INTR(MAX(req->rq_timeout * HZ, 1), NULL, NULL, NULL);
631 rc = l_wait_event(req->rq_reply_waitq, mdc_close_check_reply(req),
633 if (req->rq_repmsg == NULL) {
634 CDEBUG(D_HA, "request failed to send: %p, %d\n", req,
637 rc = req->rq_status ? req->rq_status : -EIO;
638 } else if (rc == 0) {
639 rc = req->rq_repmsg->status;
640 if (req->rq_repmsg->type == PTL_RPC_MSG_ERR) {
641 DEBUG_REQ(D_ERROR, req, "type == PTL_RPC_MSG_ERR, "
647 CERROR("Unexpected: can't find mdc_open_data, but "
648 "close succeeded. Please tell CFS.\n");
649 if (!lustre_swab_repbuf(req, 0, sizeof(struct mds_body),
650 lustre_swab_mds_body))
652 CERROR("Error unpacking mds_body\n");
657 if (req->rq_async_args.pointer_arg[0] != NULL) {
658 CERROR("returned without dropping close lock: rc %d, "
659 "dropping it now\n", rc);
660 mdc_close_interpret(req, &req->rq_async_args, rc);
669 int mdc_done_writing(struct obd_export *exp, struct obdo *obdo)
671 struct ptlrpc_request *req;
672 struct mds_body *body;
673 int rc, size[2] = {0, sizeof(*body)};
676 size[0] = lustre_secdesc_size();
678 req = ptlrpc_prep_req(class_exp2cliimp(exp), LUSTRE_MDS_VERSION,
679 MDS_DONE_WRITING, 2, size, NULL);
683 lustre_pack_secdesc(req, size[0]);
685 body = lustre_msg_buf(req->rq_reqmsg, MDS_REQ_REC_OFF,
688 mdc_pack_id(&body->id1, obdo->o_id, 0, obdo->o_mode,
689 obdo->o_mds, obdo->o_fid);
691 body->size = obdo->o_size;
692 body->blocks = obdo->o_blocks;
693 body->flags = obdo->o_flags;
694 body->valid = obdo->o_valid;
696 req->rq_replen = lustre_msg_size(1, &size[1]);
698 rc = ptlrpc_queue_wait(req);
699 ptlrpc_req_finished(req);
703 int mdc_readpage(struct obd_export *exp,
704 struct lustre_id *id,
705 __u64 offset, struct page *page,
706 struct ptlrpc_request **request)
708 struct obd_import *imp = class_exp2cliimp(exp);
709 struct ptlrpc_request *req = NULL;
710 struct ptlrpc_bulk_desc *desc = NULL;
711 struct mds_body *body;
712 int rc, size[2] = {0, sizeof(*body)};
715 CDEBUG(D_INODE, "inode: %ld\n", (long)id->li_stc.u.e3s.l3s_ino);
717 size[0] = lustre_secdesc_size();
719 req = ptlrpc_prep_req(imp, LUSTRE_MDS_VERSION, MDS_READPAGE,
722 GOTO(out, rc = -ENOMEM);
723 /* XXX FIXME bug 249 */
724 req->rq_request_portal = MDS_READPAGE_PORTAL;
726 lustre_pack_secdesc(req, size[0]);
728 desc = ptlrpc_prep_bulk_imp(req, 1, BULK_PUT_SINK, MDS_BULK_PORTAL);
730 GOTO(out, rc = -ENOMEM);
731 /* NB req now owns desc and will free it when it gets freed */
733 ptlrpc_prep_bulk_page(desc, page, 0, PAGE_CACHE_SIZE);
734 mdc_readdir_pack(req, 1, offset, PAGE_CACHE_SIZE, id);
736 req->rq_replen = lustre_msg_size(1, &size[1]);
737 rc = ptlrpc_queue_wait(req);
740 body = lustre_swab_repbuf(req, 0, sizeof (*body),
741 lustre_swab_mds_body);
743 CERROR("Can't unpack mds_body\n");
744 GOTO(out, rc = -EPROTO);
747 if (req->rq_bulk->bd_nob_transferred != PAGE_CACHE_SIZE) {
748 CERROR ("Unexpected # bytes transferred: %d"
750 req->rq_bulk->bd_nob_transferred,
752 GOTO (out, rc = -EPROTO);
762 static int mdc_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
763 void *karg, void *uarg)
765 struct obd_device *obd = exp->exp_obd;
766 struct obd_ioctl_data *data = karg;
767 struct obd_import *imp = obd->u.cli.cl_import;
768 struct llog_ctxt *ctxt;
772 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
775 if (!try_module_get(THIS_MODULE)) {
776 CERROR("Can't get module. Is it alive?");
781 case OBD_IOC_CLIENT_RECOVER:
782 rc = ptlrpc_recover_import(imp, data->ioc_inlbuf1);
786 case IOC_OSC_SET_ACTIVE:
787 rc = ptlrpc_set_import_active(imp, data->ioc_offset);
789 case IOC_OSC_CTL_RECOVERY:
790 rc = ptlrpc_import_control_recovery(imp, data->ioc_offset);
792 case OBD_IOC_PARSE: {
793 ctxt = llog_get_context(&exp->exp_obd->obd_llogs,
794 LLOG_CONFIG_REPL_CTXT);
795 rc = class_config_process_llog(ctxt, data->ioc_inlbuf1, NULL);
799 case OBD_IOC_LLOG_INFO:
800 case OBD_IOC_LLOG_PRINT: {
801 ctxt = llog_get_context(&obd->obd_llogs, LLOG_CONFIG_REPL_CTXT);
802 rc = llog_ioctl(ctxt, cmd, data);
808 CERROR("mdc_ioctl(): unrecognised ioctl %#x\n", cmd);
809 GOTO(out, rc = -ENOTTY);
812 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
815 module_put(THIS_MODULE);
821 int mdc_set_info(struct obd_export *exp, obd_count keylen,
822 void *key, obd_count vallen, void *val)
826 if (keylen == strlen("initial_recov") &&
827 memcmp(key, "initial_recov", strlen("initial_recov")) == 0) {
828 struct obd_import *imp = exp->exp_obd->u.cli.cl_import;
829 if (vallen != sizeof(int))
831 imp->imp_initial_recov = *(int *)val;
832 CDEBUG(D_HA, "%s: set imp_no_init_recov = %d\n",
833 exp->exp_obd->obd_name,
834 imp->imp_initial_recov);
836 } else if (keylen >= strlen("mds_type") && strcmp(key, "mds_type") == 0) {
837 struct ptlrpc_request *req;
838 char *bufs[2] = {key, val};
839 int rc, size[2] = {keylen, vallen};
841 req = ptlrpc_prep_req(class_exp2cliimp(exp), LUSTRE_OBD_VERSION,
842 OST_SET_INFO, 2, size, bufs);
846 req->rq_replen = lustre_msg_size(0, NULL);
847 rc = ptlrpc_queue_wait(req);
848 ptlrpc_req_finished(req);
850 } else if (keylen >= strlen("inter_mds") && strcmp(key, "inter_mds") == 0) {
851 struct obd_import *imp = class_exp2cliimp(exp);
852 imp->imp_server_timeout = 1;
853 CDEBUG(D_OTHER, "%s: timeout / 2\n", exp->exp_obd->obd_name);
855 } else if (keylen == strlen("sec") && memcmp(key, "sec", keylen) == 0) {
856 struct client_obd *cli = &exp->exp_obd->u.cli;
858 if (vallen == strlen("null") &&
859 memcmp(val, "null", vallen) == 0) {
860 cli->cl_sec_flavor = PTLRPC_SEC_NULL;
861 cli->cl_sec_subflavor = 0;
864 if (vallen == strlen("krb5i") &&
865 memcmp(val, "krb5i", vallen) == 0) {
866 cli->cl_sec_flavor = PTLRPC_SEC_GSS;
867 cli->cl_sec_subflavor = PTLRPC_SEC_GSS_KRB5I;
870 if (vallen == strlen("krb5p") &&
871 memcmp(val, "krb5p", vallen) == 0) {
872 cli->cl_sec_flavor = PTLRPC_SEC_GSS;
873 cli->cl_sec_subflavor = PTLRPC_SEC_GSS_KRB5P;
876 CERROR("unrecognized security type %s\n", (char*) val);
878 } else if (keylen == strlen("async") && memcmp(key, "async", keylen) == 0) {
879 struct client_obd *cl = &exp->exp_obd->u.cli;
880 if (vallen != sizeof(int))
882 cl->cl_async = *(int *)val;
883 CDEBUG(D_HA, "%s: set async = %d\n",
884 exp->exp_obd->obd_name, cl->cl_async);
890 static int mdc_statfs(struct obd_device *obd, struct obd_statfs *osfs,
891 unsigned long max_age)
893 struct obd_statfs *msfs;
894 struct ptlrpc_request *req;
895 int rc, size = sizeof(*msfs);
898 /* We could possibly pass max_age in the request (as an absolute
899 * timestamp or a "seconds.usec ago") so the target can avoid doing
900 * extra calls into the filesystem if that isn't necessary (e.g.
901 * during mount that would help a bit). Having relative timestamps
902 * is not so great if request processing is slow, while absolute
903 * timestamps are not ideal because they need time synchronization. */
904 req = ptlrpc_prep_req(obd->u.cli.cl_import, LUSTRE_MDS_VERSION,
905 MDS_STATFS, 0, NULL, NULL);
909 req->rq_replen = lustre_msg_size(1, &size);
911 mdc_get_rpc_lock(obd->u.cli.cl_rpc_lock, NULL);
912 rc = ptlrpc_queue_wait(req);
913 mdc_put_rpc_lock(obd->u.cli.cl_rpc_lock, NULL);
916 /* this can be LMV fake import, whcih is not connected. */
917 if (!req->rq_import->imp_connection)
918 memset(osfs, 0, sizeof(*osfs));
922 msfs = lustre_swab_repbuf(req, 0, sizeof(*msfs),
923 lustre_swab_obd_statfs);
925 CERROR("Can't unpack obd_statfs\n");
926 GOTO(out, rc = -EPROTO);
929 memcpy(osfs, msfs, sizeof (*msfs));
932 ptlrpc_req_finished(req);
936 static int mdc_pin(struct obd_export *exp, obd_id ino, __u32 gen, int type,
937 struct obd_client_handle *handle, int flag)
939 struct ptlrpc_request *req;
940 struct mds_body *body;
941 int rc, size[2] = {0, sizeof(*body)};
944 //size[0] = lustre_secdesc_size();
946 req = ptlrpc_prep_req(class_exp2cliimp(exp), LUSTRE_MDS_VERSION,
947 MDS_PIN, 2, size, NULL);
951 //lustre_pack_secdesc(req, size[0]);
953 body = lustre_msg_buf(req->rq_reqmsg,
954 MDS_REQ_REC_OFF, sizeof(*body));
956 /* FIXME-UMKA: here should be also mdsnum and fid. */
957 mdc_pack_id(&body->id1, ino, gen, type, 0, 0);
960 req->rq_replen = lustre_msg_size(1, &size[1]);
962 mdc_get_rpc_lock(exp->exp_obd->u.cli.cl_rpc_lock, NULL);
963 rc = ptlrpc_queue_wait(req);
964 mdc_put_rpc_lock(exp->exp_obd->u.cli.cl_rpc_lock, NULL);
966 CERROR("pin failed: %d\n", rc);
967 ptlrpc_req_finished(req);
971 body = lustre_swab_repbuf(req, 0, sizeof(*body), lustre_swab_mds_body);
973 ptlrpc_req_finished(req);
977 memcpy(&handle->och_fh, &body->handle, sizeof(body->handle));
978 handle->och_magic = OBD_CLIENT_HANDLE_MAGIC;
980 OBD_ALLOC(handle->och_mod, sizeof(*handle->och_mod));
981 if (handle->och_mod == NULL) {
982 DEBUG_REQ(D_ERROR, req, "can't allocate mdc_open_data");
985 handle->och_mod->mod_open_req = req; /* will be dropped by unpin */
990 static int mdc_unpin(struct obd_export *exp,
991 struct obd_client_handle *handle, int flag)
993 struct ptlrpc_request *req;
994 struct mds_body *body;
995 int rc, size[2] = {0, sizeof(*body)};
998 if (handle->och_magic != OBD_CLIENT_HANDLE_MAGIC)
1001 //size[0] = lustre_secdesc_size();
1003 req = ptlrpc_prep_req(class_exp2cliimp(exp), LUSTRE_MDS_VERSION,
1004 MDS_CLOSE, 2, size, NULL);
1008 //lustre_pack_secdesc(req, size[0]);
1010 body = lustre_msg_buf(req->rq_reqmsg, MDS_REQ_REC_OFF, sizeof(*body));
1011 memcpy(&body->handle, &handle->och_fh, sizeof(body->handle));
1014 req->rq_replen = lustre_msg_size(0, NULL);
1015 mdc_get_rpc_lock(exp->exp_obd->u.cli.cl_rpc_lock, NULL);
1016 rc = ptlrpc_queue_wait(req);
1017 mdc_put_rpc_lock(exp->exp_obd->u.cli.cl_rpc_lock, NULL);
1020 CERROR("unpin failed: %d\n", rc);
1022 ptlrpc_req_finished(req);
1023 ptlrpc_req_finished(handle->och_mod->mod_open_req);
1024 OBD_FREE(handle->och_mod, sizeof(*handle->och_mod));
1028 int mdc_sync(struct obd_export *exp, struct lustre_id *id,
1029 struct ptlrpc_request **request)
1031 struct ptlrpc_request *req;
1032 struct mds_body *body;
1033 int size[2] = {0, sizeof(*body)};
1037 //size[0] = lustre_secdesc_size();
1039 req = ptlrpc_prep_req(class_exp2cliimp(exp), LUSTRE_MDS_VERSION,
1040 MDS_SYNC, 2, size, NULL);
1042 RETURN(rc = -ENOMEM);
1044 //lustre_pack_secdesc(req, size[0]);
1047 body = lustre_msg_buf(req->rq_reqmsg, MDS_REQ_REC_OFF,
1049 memcpy(&body->id1, id, sizeof(*id));
1052 req->rq_replen = lustre_msg_size(1, &size[1]);
1054 rc = ptlrpc_queue_wait(req);
1055 if (rc || request == NULL)
1056 ptlrpc_req_finished(req);
1063 static int mdc_import_event(struct obd_device *obd, struct obd_import *imp,
1064 enum obd_import_event event)
1068 LASSERT(imp->imp_obd == obd);
1071 case IMP_EVENT_DISCON: {
1074 case IMP_EVENT_INACTIVE: {
1075 if (obd->obd_observer)
1076 rc = obd_notify(obd->obd_observer, obd, 0, 0);
1079 case IMP_EVENT_INVALIDATE: {
1080 struct ldlm_namespace *ns = obd->obd_namespace;
1082 ldlm_namespace_cleanup(ns, LDLM_FL_LOCAL_ONLY);
1086 case IMP_EVENT_ACTIVE: {
1087 if (obd->obd_observer)
1088 rc = obd_notify(obd->obd_observer, obd, 1, 0);
1092 CERROR("Unknown import event %d\n", event);
1098 static int mdc_attach(struct obd_device *dev, obd_count len, void *data)
1100 struct lprocfs_static_vars lvars;
1102 lprocfs_init_vars(mdc, &lvars);
1103 return lprocfs_obd_attach(dev, lvars.obd_vars);
1106 static int mdc_detach(struct obd_device *dev)
1108 return lprocfs_obd_detach(dev);
1111 static int mdc_setup(struct obd_device *obd, obd_count len, void *buf)
1113 struct client_obd *cli = &obd->u.cli;
1117 OBD_ALLOC(cli->cl_rpc_lock, sizeof (*cli->cl_rpc_lock));
1118 if (!cli->cl_rpc_lock)
1120 mdc_init_rpc_lock(cli->cl_rpc_lock);
1124 OBD_ALLOC(cli->cl_setattr_lock, sizeof (*cli->cl_setattr_lock));
1125 if (!cli->cl_setattr_lock)
1126 GOTO(err_rpc_lock, rc = -ENOMEM);
1127 mdc_init_rpc_lock(cli->cl_setattr_lock);
1129 OBD_ALLOC(cli->cl_close_lock, sizeof (*cli->cl_close_lock));
1130 if (!cli->cl_close_lock)
1131 GOTO(err_setattr_lock, rc = -ENOMEM);
1132 mdc_init_rpc_lock(cli->cl_close_lock);
1134 rc = client_obd_setup(obd, len, buf);
1136 GOTO(err_close_lock, rc);
1138 rc = obd_llog_init(obd, &obd->obd_llogs, obd, 0, NULL);
1140 mdc_cleanup(obd, 0);
1141 CERROR("failed to setup llogging subsystems\n");
1147 OBD_FREE(cli->cl_close_lock, sizeof (*cli->cl_close_lock));
1149 OBD_FREE(cli->cl_setattr_lock, sizeof (*cli->cl_setattr_lock));
1151 OBD_FREE(cli->cl_rpc_lock, sizeof (*cli->cl_rpc_lock));
1156 static int mdc_init_ea_size(struct obd_export *exp, int easize, int cookiesize)
1158 struct obd_device *obd = exp->exp_obd;
1159 struct client_obd *cli = &obd->u.cli;
1162 if (cli->cl_max_mds_easize < easize)
1163 cli->cl_max_mds_easize = easize;
1164 if (cli->cl_max_mds_cookiesize < cookiesize)
1165 cli->cl_max_mds_cookiesize = cookiesize;
1169 static int mdc_precleanup(struct obd_device *obd, int flags)
1173 rc = obd_llog_finish(obd, &obd->obd_llogs, 0);
1175 CERROR("failed to cleanup llogging subsystems\n");
1180 static int mdc_cleanup(struct obd_device *obd, int flags)
1182 struct client_obd *cli = &obd->u.cli;
1184 OBD_FREE(cli->cl_rpc_lock, sizeof (*cli->cl_rpc_lock));
1185 OBD_FREE(cli->cl_setattr_lock, sizeof (*cli->cl_setattr_lock));
1186 OBD_FREE(cli->cl_close_lock, sizeof (*cli->cl_close_lock));
1190 return client_obd_cleanup(obd, flags);
1194 static int mdc_llog_init(struct obd_device *obd, struct obd_llogs *llogs,
1195 struct obd_device *tgt, int count,
1196 struct llog_catid *logid)
1198 struct llog_ctxt *ctxt;
1202 rc = obd_llog_setup(obd, llogs, LLOG_CONFIG_REPL_CTXT, tgt, 0, NULL,
1205 ctxt = llog_get_context(llogs, LLOG_CONFIG_REPL_CTXT);
1206 ctxt->loc_imp = obd->u.cli.cl_import;
1212 static int mdc_llog_finish(struct obd_device *obd,
1213 struct obd_llogs *llogs, int count)
1218 rc = obd_llog_cleanup(llog_get_context(llogs, LLOG_CONFIG_REPL_CTXT));
1221 static struct obd_device *mdc_get_real_obd(struct obd_export *exp,
1222 struct lustre_id *id)
1225 RETURN(exp->exp_obd);
1228 static int mdc_get_info(struct obd_export *exp, __u32 keylen,
1229 void *key, __u32 *valsize, void *val)
1231 struct ptlrpc_request *req;
1232 char *bufs[1] = {key};
1236 if (!valsize || !val)
1239 if (keylen == strlen("remote_flag") && !strcmp(key, "remote_flag")) {
1240 struct obd_import *imp;
1241 struct obd_connect_data *data;
1243 imp = class_exp2cliimp(exp);
1249 if (imp->imp_state != LUSTRE_IMP_FULL) {
1250 CERROR("import state not full\n");
1254 data = &imp->imp_connect_data;
1255 if (data->ocd_connect_flags & OBD_CONNECT_REMOTE) {
1258 } else if (data->ocd_connect_flags & OBD_CONNECT_LOCAL) {
1262 CERROR("no remote flag set?\n");
1266 if ((keylen < strlen("mdsize") || strcmp(key, "mdsize") != 0) &&
1267 (keylen < strlen("mdsnum") || strcmp(key, "mdsnum") != 0) &&
1268 (keylen < strlen("rootid") || strcmp(key, "rootid") != 0))
1271 req = ptlrpc_prep_req(class_exp2cliimp(exp), LUSTRE_OBD_VERSION,
1272 OST_GET_INFO, 1, (int *)&keylen, bufs);
1276 req->rq_replen = lustre_msg_size(1, (int *)valsize);
1277 rc = ptlrpc_queue_wait(req);
1281 if (keylen >= strlen("rootid") && !strcmp(key, "rootid")) {
1282 struct lustre_id *reply;
1284 reply = lustre_swab_repbuf(req, 0, sizeof(*reply),
1285 lustre_swab_lustre_id);
1286 if (reply == NULL) {
1287 CERROR("Can't unpack %s\n", (char *)key);
1288 GOTO(out_req, rc = -EPROTO);
1291 *(struct lustre_id *)val = *reply;
1295 reply = lustre_swab_repbuf(req, 0, sizeof(*reply),
1296 lustre_swab_generic_32s);
1297 if (reply == NULL) {
1298 CERROR("Can't unpack %s\n", (char *)key);
1299 GOTO(out_req, rc = -EPROTO);
1301 *((__u32 *)val) = *reply;
1304 ptlrpc_req_finished(req);
1308 int mdc_obj_create(struct obd_export *exp, struct obdo *oa,
1309 void *acl, int acl_size,
1310 struct lov_stripe_md **ea, struct obd_trans_info *oti)
1312 struct ptlrpc_request *request;
1313 struct ost_body *body;
1315 int rc, size[2] = { sizeof(*body), acl_size };
1320 request = ptlrpc_prep_req(class_exp2cliimp(exp), LUSTRE_OBD_VERSION,
1321 OST_CREATE, 2, size, NULL);
1323 GOTO(out_req, rc = -ENOMEM);
1325 body = lustre_msg_buf(request->rq_reqmsg, 0, sizeof (*body));
1326 memcpy(&body->oa, oa, sizeof(body->oa));
1329 acl_buf = lustre_msg_buf(request->rq_reqmsg, 1, acl_size);
1330 memcpy(acl_buf, acl, acl_size);
1333 request->rq_replen = lustre_msg_size(1, size);
1334 rc = ptlrpc_queue_wait(request);
1338 body = lustre_swab_repbuf(request, 0, sizeof(*body),
1339 lustre_swab_ost_body);
1341 CERROR ("can't unpack ost_body\n");
1342 GOTO (out_req, rc = -EPROTO);
1345 memcpy(oa, &body->oa, sizeof(*oa));
1347 /* store ino/generation for recovery */
1348 body = lustre_msg_buf(request->rq_reqmsg, 0, sizeof (*body));
1349 body->oa.o_id = oa->o_id;
1350 body->oa.o_generation = oa->o_generation;
1351 body->oa.o_fid = oa->o_fid;
1352 body->oa.o_mds = oa->o_mds;
1354 CDEBUG(D_HA, "transno: "LPD64"\n", request->rq_repmsg->transno);
1357 ptlrpc_req_finished(request);
1361 int mdc_brw(int rw, struct obd_export *exp, struct obdo *oa,
1362 struct lov_stripe_md *ea, obd_count oa_bufs,
1363 struct brw_page *pgarr, struct obd_trans_info *oti)
1365 struct ptlrpc_bulk_desc *desc;
1366 struct niobuf_remote *niobuf;
1367 struct ptlrpc_request *req;
1368 struct obd_ioobj *ioobj;
1369 struct ost_body *body;
1373 opc = ((rw & OBD_BRW_WRITE) != 0) ? OST_WRITE : OST_READ;
1375 size[0] = sizeof(*body);
1376 size[1] = sizeof(*ioobj);
1377 size[2] = oa_bufs * sizeof(*niobuf);
1379 req = ptlrpc_prep_req(class_exp2cliimp(exp), LUSTRE_OBD_VERSION, opc,
1381 LASSERT(req != NULL);
1383 if (opc == OST_WRITE)
1384 desc = ptlrpc_prep_bulk_imp(req, oa_bufs, BULK_GET_SOURCE,
1387 desc = ptlrpc_prep_bulk_imp(req, oa_bufs, BULK_PUT_SINK,
1389 LASSERT(desc != NULL);
1391 body = lustre_msg_buf(req->rq_reqmsg, 0, sizeof(*body));
1392 ioobj = lustre_msg_buf(req->rq_reqmsg, 1, sizeof(*ioobj));
1393 niobuf = lustre_msg_buf(req->rq_reqmsg, 2, oa_bufs * sizeof(*niobuf));
1395 memcpy(&body->oa, oa, sizeof(*oa));
1396 obdo_to_ioobj(oa, ioobj);
1397 ioobj->ioo_bufcnt = oa_bufs;
1399 for (i = 0; i < oa_bufs; i++, niobuf++) {
1400 struct brw_page *pg = &pgarr[i];
1402 LASSERT(pg->count > 0);
1403 LASSERT((pg->disk_offset & ~PAGE_MASK) + pg->count <= PAGE_SIZE);
1405 ptlrpc_prep_bulk_page(desc, pg->pg, pg->disk_offset & ~PAGE_MASK,
1408 niobuf->offset = pg->disk_offset;
1409 niobuf->len = pg->count;
1410 niobuf->flags = pg->flag;
1413 /* size[0] still sizeof (*body) */
1414 if (opc == OST_WRITE) {
1415 /* 1 RC per niobuf */
1416 size[1] = sizeof(__u32) * oa_bufs;
1417 req->rq_replen = lustre_msg_size(2, size);
1419 /* 1 RC for the whole I/O */
1420 req->rq_replen = lustre_msg_size(1, size);
1422 err = ptlrpc_queue_wait(req);
1425 ptlrpc_req_finished(req);
1429 static int mdc_valid_attrs(struct obd_export *exp,
1430 struct lustre_id *id)
1432 struct ldlm_res_id res_id = { .name = {0} };
1433 struct obd_device *obd = exp->exp_obd;
1434 struct lustre_handle lockh;
1435 ldlm_policy_data_t policy;
1439 res_id.name[0] = id_fid(id);
1440 res_id.name[1] = id_group(id);
1441 policy.l_inodebits.bits = MDS_INODELOCK_UPDATE;
1443 CDEBUG(D_INFO, "trying to match res "LPU64"\n",
1446 /* FIXME use LDLM_FL_TEST_LOCK instead */
1447 flags = LDLM_FL_BLOCK_GRANTED | LDLM_FL_CBPENDING;
1448 if (ldlm_lock_match(obd->obd_namespace, flags, &res_id,
1449 LDLM_IBITS, &policy, LCK_PR, &lockh)) {
1450 ldlm_lock_decref(&lockh, LCK_PR);
1454 if (ldlm_lock_match(obd->obd_namespace, flags, &res_id,
1455 LDLM_IBITS, &policy, LCK_PW, &lockh)) {
1456 ldlm_lock_decref(&lockh, LCK_PW);
1462 static int mdc_change_cbdata_name(struct obd_export *exp,
1463 struct lustre_id *pid,
1464 char *name, int len,
1465 struct lustre_id *cid,
1466 ldlm_iterator_t it, void *data)
1469 rc = mdc_change_cbdata(exp, cid, it, data);
1473 struct obd_ops mdc_obd_ops = {
1474 .o_owner = THIS_MODULE,
1475 .o_attach = mdc_attach,
1476 .o_detach = mdc_detach,
1477 .o_setup = mdc_setup,
1478 .o_precleanup = mdc_precleanup,
1479 .o_cleanup = mdc_cleanup,
1480 .o_add_conn = client_import_add_conn,
1481 .o_del_conn = client_import_del_conn,
1482 .o_connect = client_connect_import,
1483 .o_disconnect = client_disconnect_export,
1484 .o_iocontrol = mdc_iocontrol,
1485 .o_packmd = mdc_packmd,
1486 .o_unpackmd = mdc_unpackmd,
1487 .o_statfs = mdc_statfs,
1489 .o_unpin = mdc_unpin,
1490 .o_import_event = mdc_import_event,
1491 .o_llog_init = mdc_llog_init,
1492 .o_llog_finish = mdc_llog_finish,
1493 .o_create = mdc_obj_create,
1494 .o_set_info = mdc_set_info,
1495 .o_get_info = mdc_get_info,
1497 .o_cancel_unused = mdc_cancel_unused,
1498 .o_init_ea_size = mdc_init_ea_size,
1501 struct md_ops mdc_md_ops = {
1502 .m_getstatus = mdc_getstatus,
1503 .m_getattr = mdc_getattr,
1504 .m_close = mdc_close,
1505 .m_create = mdc_create,
1506 .m_done_writing = mdc_done_writing,
1507 .m_enqueue = mdc_enqueue,
1508 .m_getattr_lock = mdc_getattr_lock,
1509 .m_intent_lock = mdc_intent_lock,
1511 .m_rename = mdc_rename,
1512 .m_setattr = mdc_setattr,
1514 .m_readpage = mdc_readpage,
1515 .m_unlink = mdc_unlink,
1516 .m_valid_attrs = mdc_valid_attrs,
1517 .m_req2lustre_md = mdc_req2lustre_md,
1518 .m_set_open_replay_data = mdc_set_open_replay_data,
1519 .m_clear_open_replay_data = mdc_clear_open_replay_data,
1520 .m_store_inode_generation = mdc_store_inode_generation,
1521 .m_set_lock_data = mdc_set_lock_data,
1522 .m_get_real_obd = mdc_get_real_obd,
1523 .m_change_cbdata_name = mdc_change_cbdata_name,
1524 .m_change_cbdata = mdc_change_cbdata,
1527 int __init mdc_init(void)
1529 struct lprocfs_static_vars lvars;
1530 lprocfs_init_vars(mdc, &lvars);
1531 return class_register_type(&mdc_obd_ops, &mdc_md_ops, lvars.module_vars,
1536 static void /*__exit*/ mdc_exit(void)
1538 class_unregister_type(LUSTRE_MDC_NAME);
1541 MODULE_AUTHOR("Cluster File Systems, Inc. <info@clusterfs.com>");
1542 MODULE_DESCRIPTION("Lustre Metadata Client");
1543 MODULE_LICENSE("GPL");
1545 EXPORT_SYMBOL(mdc_req2lustre_md);
1546 EXPORT_SYMBOL(mdc_change_cbdata);
1547 EXPORT_SYMBOL(mdc_getstatus);
1548 EXPORT_SYMBOL(mdc_getattr);
1549 EXPORT_SYMBOL(mdc_getattr_lock);
1550 EXPORT_SYMBOL(mdc_create);
1551 EXPORT_SYMBOL(mdc_unlink);
1552 EXPORT_SYMBOL(mdc_rename);
1553 EXPORT_SYMBOL(mdc_link);
1554 EXPORT_SYMBOL(mdc_readpage);
1555 EXPORT_SYMBOL(mdc_setattr);
1556 EXPORT_SYMBOL(mdc_close);
1557 EXPORT_SYMBOL(mdc_done_writing);
1558 EXPORT_SYMBOL(mdc_sync);
1559 EXPORT_SYMBOL(mdc_set_open_replay_data);
1560 EXPORT_SYMBOL(mdc_clear_open_replay_data);
1561 EXPORT_SYMBOL(mdc_store_inode_generation);
1563 module_init(mdc_init);
1564 module_exit(mdc_exit);