1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
4 * Copyright (C) 2001-2003 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/lprocfs_status.h>
40 #include "mdc_internal.h"
42 #define REQUEST_MINOR 244
44 static int mdc_cleanup(struct obd_device *obd, int flags);
46 extern int mds_queue_req(struct ptlrpc_request *);
47 /* Helper that implements most of mdc_getstatus and signal_completed_replay. */
48 /* XXX this should become mdc_get_info("key"), sending MDS_GET_INFO RPC */
49 static int send_getstatus(struct obd_import *imp, struct ll_fid *rootfid,
50 int level, int msg_flags)
52 struct ptlrpc_request *req;
53 struct mds_body *body;
54 int rc, size = sizeof(*body);
57 req = ptlrpc_prep_req(imp, MDS_GETSTATUS, 1, &size, NULL);
59 GOTO(out, rc = -ENOMEM);
61 body = lustre_msg_buf(req->rq_reqmsg, 0, sizeof (*body));
62 req->rq_send_state = level;
63 req->rq_replen = lustre_msg_size(1, &size);
65 mdc_pack_req_body(req);
66 req->rq_reqmsg->flags |= msg_flags;
67 rc = ptlrpc_queue_wait(req);
70 body = lustre_swab_repbuf (req, 0, sizeof (*body),
71 lustre_swab_mds_body);
73 CERROR ("Can't extract mds_body\n");
74 GOTO (out, rc = -EPROTO);
77 memcpy(rootfid, &body->fid1, sizeof(*rootfid));
79 CDEBUG(D_NET, "root ino="LPU64", last_committed="LPU64
80 ", last_xid="LPU64"\n",
81 rootfid->id, req->rq_repmsg->last_committed,
82 req->rq_repmsg->last_xid);
87 ptlrpc_req_finished(req);
91 /* This should be mdc_get_info("rootfid") */
92 int mdc_getstatus(struct obd_export *exp, struct ll_fid *rootfid)
94 return send_getstatus(class_exp2cliimp(exp), rootfid, LUSTRE_IMP_FULL,
98 int mdc_getattr_common(struct obd_export *exp, unsigned int ea_size,
99 struct ptlrpc_request *req)
101 struct mds_body *body;
104 int size[2] = {sizeof(*body), 0};
108 /* request message already built */
111 size[bufcount++] = ea_size;
112 CDEBUG(D_INODE, "reserved %u bytes for MD/symlink in packet\n",
115 req->rq_replen = lustre_msg_size(bufcount, size);
117 mdc_get_rpc_lock(exp->exp_obd->u.cli.cl_rpc_lock, NULL);
118 rc = ptlrpc_queue_wait(req);
119 mdc_put_rpc_lock(exp->exp_obd->u.cli.cl_rpc_lock, NULL);
123 body = lustre_swab_repbuf (req, 0, sizeof (*body),
124 lustre_swab_mds_body);
126 CERROR ("Can't unpack mds_body\n");
130 CDEBUG(D_NET, "mode: %o\n", body->mode);
132 LASSERT_REPSWAB (req, 1);
133 if (body->eadatasize != 0) {
134 /* reply indicates presence of eadata; check it's there... */
135 eadata = lustre_msg_buf (req->rq_repmsg, 1, body->eadatasize);
136 if (eadata == NULL) {
137 CERROR ("Missing/short eadata\n");
145 int mdc_getattr(struct obd_export *exp, struct ll_fid *fid,
146 unsigned long valid, unsigned int ea_size,
147 struct ptlrpc_request **request)
149 struct ptlrpc_request *req;
150 struct mds_body *body;
151 int size = sizeof(*body);
155 /* XXX do we need to make another request here? We just did a getattr
156 * to do the lookup in the first place.
158 req = ptlrpc_prep_req(class_exp2cliimp(exp), MDS_GETATTR, 1, &size,
161 GOTO(out, rc = -ENOMEM);
163 body = lustre_msg_buf(req->rq_reqmsg, 0, sizeof (*body));
164 memcpy(&body->fid1, fid, sizeof(*fid));
166 body->eadatasize = ea_size;
167 mdc_pack_req_body(req);
169 rc = mdc_getattr_common(exp, ea_size, req);
171 ptlrpc_req_finished (req);
179 int mdc_getattr_name(struct obd_export *exp, struct ll_fid *fid,
180 char *filename, int namelen, unsigned long valid,
181 unsigned int ea_size, struct ptlrpc_request **request)
183 struct ptlrpc_request *req;
184 struct mds_body *body;
185 int rc, size[2] = {sizeof(*body), namelen};
188 req = ptlrpc_prep_req(class_exp2cliimp(exp), MDS_GETATTR_NAME, 2,
191 GOTO(out, rc = -ENOMEM);
193 body = lustre_msg_buf(req->rq_reqmsg, 0, sizeof (*body));
194 memcpy(&body->fid1, fid, sizeof(*fid));
196 body->eadatasize = ea_size;
197 mdc_pack_req_body(req);
199 LASSERT (strnlen (filename, namelen) == namelen - 1);
200 memcpy(lustre_msg_buf(req->rq_reqmsg, 1, namelen), filename, namelen);
202 rc = mdc_getattr_common(exp, ea_size, req);
204 ptlrpc_req_finished (req);
212 /* This should be called with both the request and the reply still packed. */
213 void mdc_store_inode_generation(struct ptlrpc_request *req, int reqoff,
216 struct mds_rec_create *rec =
217 lustre_msg_buf(req->rq_reqmsg, reqoff, sizeof(*rec));
218 struct mds_body *body =
219 lustre_msg_buf(req->rq_repmsg, repoff, sizeof(*body));
221 LASSERT (rec != NULL);
222 LASSERT (body != NULL);
224 memcpy(&rec->cr_replayfid, &body->fid1, sizeof rec->cr_replayfid);
225 DEBUG_REQ(D_HA, req, "storing generation %u for ino "LPU64,
226 rec->cr_replayfid.generation, rec->cr_replayfid.id);
229 int mdc_req2lustre_md(struct ptlrpc_request *req, int offset,
230 struct obd_export *exp,
231 struct lustre_md *md)
237 memset(md, 0, sizeof(*md));
239 md->body = lustre_msg_buf(req->rq_repmsg, offset, sizeof (*md->body));
240 LASSERT (md->body != NULL);
241 LASSERT_REPSWABBED (req, offset);
243 if (md->body->valid & OBD_MD_FLEASIZE) {
245 struct lov_mds_md *lmm;
247 LASSERT(S_ISREG(md->body->mode));
249 if (md->body->eadatasize == 0) {
250 CERROR ("OBD_MD_FLEASIZE set, but eadatasize 0\n");
253 lmmsize = md->body->eadatasize;
254 lmm = lustre_msg_buf(req->rq_repmsg, offset + 1, lmmsize);
255 LASSERT (lmm != NULL);
256 LASSERT_REPSWABBED (req, offset + 1);
258 rc = obd_unpackmd(exp, &md->lsm, lmm, lmmsize);
260 LASSERT (rc >= sizeof (*md->lsm));
267 static void mdc_commit_open(struct ptlrpc_request *req)
269 struct mdc_open_data *mod = req->rq_cb_data;
273 if (mod->mod_close_req != NULL)
274 mod->mod_close_req->rq_cb_data = NULL;
276 if (mod->mod_och != NULL)
277 mod->mod_och->och_mod = NULL;
279 OBD_FREE(mod, sizeof(*mod));
280 req->rq_cb_data = NULL;
283 static void mdc_replay_open(struct ptlrpc_request *req)
285 struct mdc_open_data *mod = req->rq_cb_data;
286 struct obd_client_handle *och;
287 struct ptlrpc_request *close_req;
288 struct lustre_handle old;
289 struct mds_body *body;
292 body = lustre_swab_repbuf(req, 1, sizeof(*body), lustre_swab_mds_body);
293 LASSERT (body != NULL);
296 DEBUG_REQ(D_ERROR, req,
297 "can't properly replay without open data");
304 struct lustre_handle *file_fh;
305 LASSERT(och->och_magic == OBD_CLIENT_HANDLE_MAGIC);
306 file_fh = &och->och_fh;
307 CDEBUG(D_HA, "updating handle from "LPX64" to "LPX64"\n",
308 file_fh->cookie, body->handle.cookie);
309 memcpy(&old, file_fh, sizeof(old));
310 memcpy(file_fh, &body->handle, sizeof(*file_fh));
313 close_req = mod->mod_close_req;
314 if (close_req != NULL) {
315 struct mds_body *close_body;
316 LASSERT(close_req->rq_reqmsg->opc == MDS_CLOSE);
317 close_body = lustre_msg_buf(close_req->rq_reqmsg, 0,
318 sizeof(*close_body));
320 LASSERT(!memcmp(&old, &close_body->handle, sizeof old));
321 DEBUG_REQ(D_HA, close_req, "updating close body with new fh");
322 memcpy(&close_body->handle, &body->handle,
323 sizeof(close_body->handle));
329 void mdc_set_open_replay_data(struct obd_client_handle *och,
330 struct ptlrpc_request *open_req)
332 struct mdc_open_data *mod;
333 struct mds_rec_create *rec =
334 lustre_msg_buf(open_req->rq_reqmsg, 2, sizeof(*rec));
335 struct mds_body *body =
336 lustre_msg_buf(open_req->rq_repmsg, 1, sizeof(*body));
338 LASSERT(rec != NULL);
339 /* outgoing messages always in my byte order */
340 LASSERT(body != NULL);
341 /* incoming message in my byte order (it's been swabbed) */
342 LASSERT_REPSWABBED(open_req, 1);
344 OBD_ALLOC(mod, sizeof(*mod));
346 DEBUG_REQ(D_ERROR, open_req, "can't allocate mdc_open_data");
352 mod->mod_open_req = open_req;
354 memcpy(&rec->cr_replayfid, &body->fid1, sizeof rec->cr_replayfid);
355 open_req->rq_replay_cb = mdc_replay_open;
356 open_req->rq_commit_cb = mdc_commit_open;
357 open_req->rq_cb_data = mod;
358 DEBUG_REQ(D_HA, open_req, "set up replay data");
361 void mdc_clear_open_replay_data(struct obd_client_handle *och)
363 struct mdc_open_data *mod = och->och_mod;
365 /* Don't free the structure now (it happens in mdc_commit_open, after
366 * we're sure we won't need to fix up the close request in the future),
367 * but make sure that replay doesn't poke at the och, which is about to
369 LASSERT(mod != (void *)0x5a5a5a5a);
375 static void mdc_commit_close(struct ptlrpc_request *req)
377 struct mdc_open_data *mod = req->rq_cb_data;
378 struct ptlrpc_request *open_req;
379 struct obd_import *imp = req->rq_import;
381 DEBUG_REQ(D_HA, req, "close req committed");
385 mod->mod_close_req = NULL;
386 req->rq_cb_data = NULL;
387 req->rq_commit_cb = NULL;
389 open_req = mod->mod_open_req;
390 LASSERT(open_req != NULL);
391 LASSERT(open_req != (void *)0x5a5a5a5a);
393 DEBUG_REQ(D_HA, open_req, "open req balanced");
394 LASSERT(open_req->rq_transno != 0);
395 LASSERT(open_req->rq_import == imp);
397 /* We no longer want to preserve this for transno-unconditional
399 spin_lock(&open_req->rq_lock);
400 open_req->rq_replay = 0;
401 spin_unlock(&open_req->rq_lock);
404 static int mdc_close_interpret(struct ptlrpc_request *req, void *data, int rc)
406 union ptlrpc_async_args *aa = data;
407 struct mdc_rpc_lock *rpc_lock = aa->pointer_arg[0];
409 mdc_put_rpc_lock(rpc_lock, NULL);
410 wake_up(&req->rq_reply_waitq);
414 /* We can't use ptlrpc_check_reply, because we don't want to wake up for
415 * anything but a reply or an error. */
416 static int mdc_close_check_reply(struct ptlrpc_request *req)
421 spin_lock_irqsave(&req->rq_lock, flags);
422 if (PTLRPC_REQUEST_COMPLETE(req)) {
425 spin_unlock_irqrestore (&req->rq_lock, flags);
429 static int go_back_to_sleep(void *unused)
434 int mdc_close(struct obd_export *exp, struct obdo *obdo,
435 struct obd_client_handle *och, struct ptlrpc_request **request)
437 struct mds_body *body;
438 struct obd_device *obd = class_exp2obd(exp);
439 int reqsize = sizeof(*body);
440 int rc, repsize[3] = {sizeof(*body),
441 obd->u.cli.cl_max_mds_easize,
442 obd->u.cli.cl_max_mds_cookiesize};
443 struct ptlrpc_request *req;
444 struct mdc_open_data *mod;
445 struct l_wait_info lwi;
446 struct mdc_rpc_lock *rpc_lock = obd->u.cli.cl_rpc_lock;
449 req = ptlrpc_prep_req(class_exp2cliimp(exp), MDS_CLOSE, 1, &reqsize,
452 GOTO(out, rc = -ENOMEM);
454 /* Ensure that this close's handle is fixed up during replay. */
455 LASSERT(och != NULL);
457 if (likely(mod != NULL)) {
458 mod->mod_close_req = req;
459 DEBUG_REQ(D_HA, mod->mod_open_req, "matched open req %p",
462 CDEBUG(D_HA, "couldn't find open req; expecting close error\n");
465 body = lustre_msg_buf(req->rq_reqmsg, 0, sizeof(*body));
466 mdc_pack_fid(&body->fid1, obdo->o_id, 0, obdo->o_mode);
467 memcpy(&body->handle, &och->och_fh, sizeof(body->handle));
468 body->size = obdo->o_size;
469 body->blocks = obdo->o_blocks;
470 body->flags = obdo->o_flags;
471 body->valid = obdo->o_valid;
473 req->rq_replen = lustre_msg_size(3, repsize);
474 req->rq_commit_cb = mdc_commit_close;
475 LASSERT(req->rq_cb_data == NULL);
476 req->rq_cb_data = mod;
478 /* We hand a ref to the rpcd here, so we need another one of our own. */
479 ptlrpc_request_addref(req);
481 mdc_get_rpc_lock(rpc_lock, NULL);
482 req->rq_interpret_reply = mdc_close_interpret;
483 req->rq_async_args.pointer_arg[0] = rpc_lock;
484 ptlrpcd_add_req(req);
485 lwi = LWI_TIMEOUT_INTR(MAX(req->rq_timeout * HZ, 1), go_back_to_sleep,
487 rc = l_wait_event(req->rq_reply_waitq, mdc_close_check_reply(req),
491 rc = req->rq_repmsg->status;
492 if (req->rq_repmsg->type == PTL_RPC_MSG_ERR) {
493 DEBUG_REQ(D_ERROR, req, "type == PTL_RPC_MSG_ERR, err = %d", rc);
496 } else if (mod == NULL) {
497 CERROR("Unexpected: can't find mdc_open_data, but the close "
498 "succeeded. Please tell CFS.\n");
508 int mdc_done_writing(struct obd_export *exp, struct obdo *obdo)
510 struct ptlrpc_request *req;
511 struct mds_body *body;
512 int rc, size = sizeof(*body);
515 req = ptlrpc_prep_req(class_exp2cliimp(exp), MDS_DONE_WRITING, 1,
520 body = lustre_msg_buf(req->rq_reqmsg, 0, sizeof(*body));
521 mdc_pack_fid(&body->fid1, obdo->o_id, 0, obdo->o_mode);
522 body->size = obdo->o_size;
523 body->blocks = obdo->o_blocks;
524 body->flags = obdo->o_flags;
525 body->valid = obdo->o_valid;
526 // memcpy(&body->handle, &och->och_fh, sizeof(body->handle));
528 req->rq_replen = lustre_msg_size(1, &size);
530 rc = ptlrpc_queue_wait(req);
531 ptlrpc_req_finished(req);
535 int mdc_readpage(struct obd_export *exp, struct ll_fid *mdc_fid, __u64 offset,
536 struct page *page, struct ptlrpc_request **request)
538 struct obd_import *imp = class_exp2cliimp(exp);
539 struct ptlrpc_request *req = NULL;
540 struct ptlrpc_bulk_desc *desc = NULL;
541 struct mds_body *body;
542 int rc, size = sizeof(*body);
545 CDEBUG(D_INODE, "inode: %ld\n", (long)mdc_fid->id);
547 req = ptlrpc_prep_req(imp, MDS_READPAGE, 1, &size, NULL);
549 GOTO(out, rc = -ENOMEM);
550 /* XXX FIXME bug 249 */
551 req->rq_request_portal = MDS_READPAGE_PORTAL;
553 desc = ptlrpc_prep_bulk_imp(req, BULK_PUT_SINK, MDS_BULK_PORTAL);
555 GOTO(out, rc = -ENOMEM);
556 /* NB req now owns desc and will free it when it gets freed */
558 rc = ptlrpc_prep_bulk_page(desc, page, 0, PAGE_CACHE_SIZE);
562 mdc_readdir_pack(req, offset, PAGE_CACHE_SIZE, mdc_fid);
564 req->rq_replen = lustre_msg_size(1, &size);
565 rc = ptlrpc_queue_wait(req);
568 LASSERT(desc->bd_page_count == 1);
569 body = lustre_swab_repbuf(req, 0, sizeof(*body),
570 lustre_swab_mds_body);
572 CERROR("Can't unpack mds_body\n");
573 GOTO(out, rc = -EPROTO);
583 static int mdc_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
584 void *karg, void *uarg)
586 struct obd_device *obd = exp->exp_obd;
587 struct obd_ioctl_data *data = karg;
588 struct obd_import *imp = obd->u.cli.cl_import;
589 struct llog_ctxt *ctxt;
596 case OBD_IOC_CLIENT_RECOVER:
597 rc = ptlrpc_recover_import(imp, data->ioc_inlbuf1);
601 case IOC_OSC_SET_ACTIVE:
602 rc = ptlrpc_set_import_active(imp, data->ioc_offset);
604 case OBD_IOC_PARSE: {
605 ctxt = llog_get_context(exp->exp_obd, LLOG_CONFIG_REPL_CTXT);
606 rc = class_config_parse_llog(ctxt, data->ioc_inlbuf1, NULL);
610 case OBD_IOC_LLOG_INFO:
611 case OBD_IOC_LLOG_PRINT: {
612 ctxt = llog_get_context(obd, LLOG_CONFIG_REPL_CTXT);
613 rc = llog_ioctl(ctxt, cmd, data);
619 CERROR("osc_ioctl(): unrecognised ioctl %#x\n", cmd);
620 GOTO(out, rc = -ENOTTY);
627 int mdc_set_info(struct obd_export *exp, obd_count keylen,
628 void *key, obd_count vallen, void *val)
632 if (keylen == strlen("initial_recov") &&
633 memcmp(key, "initial_recov", strlen("initial_recov")) == 0) {
634 struct obd_import *imp = exp->exp_obd->u.cli.cl_import;
635 if (vallen != sizeof(int))
637 imp->imp_initial_recov = *(int *)val;
638 CDEBUG(D_HA, "%s: set imp_no_init_recov = %d\n",
639 exp->exp_obd->obd_name,
640 imp->imp_initial_recov);
647 static int mdc_statfs(struct obd_device *obd, struct obd_statfs *osfs,
648 unsigned long max_age)
650 struct ptlrpc_request *req;
651 struct obd_statfs *msfs;
652 int rc, size = sizeof(*msfs);
655 /* We could possibly pass max_age in the request (as an absolute
656 * timestamp or a "seconds.usec ago") so the target can avoid doing
657 * extra calls into the filesystem if that isn't necessary (e.g.
658 * during mount that would help a bit). Having relative timestamps
659 * is not so great if request processing is slow, while absolute
660 * timestamps are not ideal because they need time synchronization. */
661 req = ptlrpc_prep_req(obd->u.cli.cl_import, MDS_STATFS, 0, NULL, NULL);
665 req->rq_replen = lustre_msg_size(1, &size);
667 mdc_get_rpc_lock(obd->u.cli.cl_rpc_lock, NULL);
668 rc = ptlrpc_queue_wait(req);
669 mdc_put_rpc_lock(obd->u.cli.cl_rpc_lock, NULL);
674 msfs = lustre_swab_repbuf(req, 0, sizeof(*msfs),lustre_swab_obd_statfs);
676 CERROR("Can't unpack obd_statfs\n");
677 GOTO(out, rc = -EPROTO);
680 memcpy(osfs, msfs, sizeof (*msfs));
683 ptlrpc_req_finished(req);
688 static int mdc_pin(struct obd_export *exp, obd_id ino, __u32 gen, int type,
689 struct obd_client_handle *handle, int flag)
691 struct ptlrpc_request *req;
692 struct mds_body *body;
693 int rc, size = sizeof(*body);
696 req = ptlrpc_prep_req(class_exp2cliimp(exp), MDS_PIN, 1, &size, NULL);
700 body = lustre_msg_buf(req->rq_reqmsg, 0, sizeof (*body));
701 mdc_pack_fid(&body->fid1, ino, gen, type);
704 req->rq_replen = lustre_msg_size(1, &size);
706 mdc_get_rpc_lock(exp->exp_obd->u.cli.cl_rpc_lock, NULL);
707 rc = ptlrpc_queue_wait(req);
708 mdc_put_rpc_lock(exp->exp_obd->u.cli.cl_rpc_lock, NULL);
710 CERROR("pin failed: %d\n", rc);
711 ptlrpc_req_finished(req);
715 body = lustre_swab_repbuf(req, 0, sizeof(*body), lustre_swab_mds_body);
717 ptlrpc_req_finished(req);
721 memcpy(&handle->och_fh, &body->handle, sizeof(body->handle));
722 handle->och_magic = OBD_CLIENT_HANDLE_MAGIC;
724 OBD_ALLOC(handle->och_mod, sizeof(*handle->och_mod));
725 if (handle->och_mod == NULL) {
726 DEBUG_REQ(D_ERROR, req, "can't allocate mdc_open_data");
729 handle->och_mod->mod_open_req = req; /* will be dropped by unpin */
734 static int mdc_unpin(struct obd_export *exp,
735 struct obd_client_handle *handle, int flag)
737 struct ptlrpc_request *req;
738 struct mds_body *body;
739 int rc, size = sizeof(*body);
742 if (handle->och_magic != OBD_CLIENT_HANDLE_MAGIC)
745 req = ptlrpc_prep_req(class_exp2cliimp(exp), MDS_CLOSE, 1, &size, NULL);
749 body = lustre_msg_buf(req->rq_reqmsg, 0, sizeof(*body));
750 memcpy(&body->handle, &handle->och_fh, sizeof(body->handle));
753 req->rq_replen = lustre_msg_size(0, NULL);
754 mdc_get_rpc_lock(exp->exp_obd->u.cli.cl_rpc_lock, NULL);
755 rc = ptlrpc_queue_wait(req);
756 mdc_put_rpc_lock(exp->exp_obd->u.cli.cl_rpc_lock, NULL);
759 CERROR("unpin failed: %d\n", rc);
761 ptlrpc_req_finished(req);
762 ptlrpc_req_finished(handle->och_mod->mod_open_req);
763 OBD_FREE(handle->och_mod, sizeof(*handle->och_mod));
767 int mdc_sync(struct obd_export *exp, struct ll_fid *fid,
768 struct ptlrpc_request **request)
770 struct ptlrpc_request *req;
771 struct mds_body *body;
772 int size = sizeof(*body);
776 req = ptlrpc_prep_req(class_exp2cliimp(exp), MDS_SYNC, 1,&size,NULL);
778 RETURN(rc = -ENOMEM);
781 body = lustre_msg_buf(req->rq_reqmsg, 0, sizeof (*body));
782 memcpy(&body->fid1, fid, sizeof(*fid));
783 mdc_pack_req_body(req);
786 req->rq_replen = lustre_msg_size(1, &size);
788 rc = ptlrpc_queue_wait(req);
789 if (rc || request == NULL)
790 ptlrpc_req_finished(req);
797 static int mdc_attach(struct obd_device *dev, obd_count len, void *data)
799 struct lprocfs_static_vars lvars;
801 lprocfs_init_vars(mdc, &lvars);
802 return lprocfs_obd_attach(dev, lvars.obd_vars);
805 static int mdc_detach(struct obd_device *dev)
807 return lprocfs_obd_detach(dev);
810 static int mdc_setup(struct obd_device *obd, obd_count len, void *buf)
812 struct client_obd *cli = &obd->u.cli;
816 OBD_ALLOC(cli->cl_rpc_lock, sizeof (*cli->cl_rpc_lock));
817 if (!cli->cl_rpc_lock)
819 mdc_init_rpc_lock(cli->cl_rpc_lock);
823 OBD_ALLOC(cli->cl_setattr_lock, sizeof (*cli->cl_setattr_lock));
824 if (!cli->cl_setattr_lock)
825 GOTO(out_free_rpc, rc = -ENOMEM);
826 mdc_init_rpc_lock(cli->cl_setattr_lock);
828 rc = client_obd_setup(obd, len, buf);
830 OBD_FREE(cli->cl_setattr_lock, sizeof (*cli->cl_setattr_lock));
832 OBD_FREE(cli->cl_rpc_lock, sizeof (*cli->cl_rpc_lock));
835 rc = obd_llog_init(obd, obd, 0, NULL);
838 CERROR("failed to setup llogging subsystems\n");
844 int mdc_init_ea_size(struct obd_device *obd, char *lov_name)
846 struct client_obd *cli = &obd->u.cli;
847 struct obd_device *lov_obd;
848 struct obd_export *exp;
849 struct lustre_handle conn;
850 struct lov_desc desc;
854 lov_obd = class_name2obd(lov_name);
856 CERROR("MDC cannot locate LOV %s!\n", lov_name);
860 rc = obd_connect(&conn, lov_obd, &obd->obd_uuid);
862 CERROR("MDC failed connect to LOV %s (%d)\n", lov_name, rc);
865 exp = class_conn2export(&conn);
867 valsize = sizeof(desc);
868 rc = obd_get_info(exp, strlen("lovdesc") + 1, "lovdesc",
871 cli->cl_max_mds_easize = obd_size_diskmd(exp, NULL);
872 cli->cl_max_mds_cookiesize = desc.ld_tgt_count *
873 sizeof(struct llog_cookie);
875 obd_disconnect(exp, 0);
879 static int mdc_precleanup(struct obd_device *obd, int flags)
883 rc = obd_llog_finish(obd, 0);
885 CERROR("failed to cleanup llogging subsystems\n");
890 static int mdc_cleanup(struct obd_device *obd, int flags)
892 struct client_obd *cli = &obd->u.cli;
894 OBD_FREE(cli->cl_rpc_lock, sizeof (*cli->cl_rpc_lock));
895 OBD_FREE(cli->cl_setattr_lock, sizeof (*cli->cl_setattr_lock));
899 return client_obd_cleanup(obd, flags);
903 static int mdc_llog_init(struct obd_device *obd, struct obd_device *tgt,
904 int count, struct llog_logid *logid)
906 struct llog_ctxt *ctxt;
910 rc = llog_setup(obd, LLOG_CONFIG_REPL_CTXT, tgt, 0, NULL,
913 ctxt = llog_get_context(obd, LLOG_CONFIG_REPL_CTXT);
914 ctxt->loc_imp = obd->u.cli.cl_import;
920 static int mdc_llog_finish(struct obd_device *obd, int count)
925 rc = llog_cleanup(llog_get_context(obd, LLOG_CONFIG_REPL_CTXT));
929 struct obd_ops mdc_obd_ops = {
930 o_owner: THIS_MODULE,
931 o_attach: mdc_attach,
932 o_detach: mdc_detach,
934 o_precleanup: mdc_precleanup,
935 o_cleanup: mdc_cleanup,
936 o_connect: client_connect_import,
937 o_disconnect: client_disconnect_export,
938 o_iocontrol: mdc_iocontrol,
939 o_set_info: mdc_set_info,
940 o_statfs: mdc_statfs,
943 o_llog_init: mdc_llog_init,
944 o_llog_finish: mdc_llog_finish,
947 int __init mdc_init(void)
949 struct lprocfs_static_vars lvars;
950 lprocfs_init_vars(mdc, &lvars);
951 return class_register_type(&mdc_obd_ops, lvars.module_vars,
955 static void /*__exit*/ mdc_exit(void)
957 class_unregister_type(LUSTRE_MDC_NAME);
961 MODULE_AUTHOR("Cluster File Systems, Inc. <info@clusterfs.com>");
962 MODULE_DESCRIPTION("Lustre Metadata Client");
963 MODULE_LICENSE("GPL");
965 EXPORT_SYMBOL(mdc_req2lustre_md);
966 EXPORT_SYMBOL(mdc_change_cbdata);
967 EXPORT_SYMBOL(mdc_getstatus);
968 EXPORT_SYMBOL(mdc_getattr);
969 EXPORT_SYMBOL(mdc_getattr_name);
970 EXPORT_SYMBOL(mdc_create);
971 EXPORT_SYMBOL(mdc_unlink);
972 EXPORT_SYMBOL(mdc_rename);
973 EXPORT_SYMBOL(mdc_link);
974 EXPORT_SYMBOL(mdc_readpage);
975 EXPORT_SYMBOL(mdc_setattr);
976 EXPORT_SYMBOL(mdc_close);
977 EXPORT_SYMBOL(mdc_done_writing);
978 EXPORT_SYMBOL(mdc_sync);
979 EXPORT_SYMBOL(mdc_set_open_replay_data);
980 EXPORT_SYMBOL(mdc_clear_open_replay_data);
981 EXPORT_SYMBOL(mdc_store_inode_generation);
982 EXPORT_SYMBOL(mdc_init_ea_size);
984 module_init(mdc_init);
985 module_exit(mdc_exit);