1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
4 * Copyright (C) 2002, 2003 Cluster File Systems, Inc.
6 * This file is part of Lustre, http://www.lustre.org.
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_LMV
27 #include <linux/slab.h>
28 #include <linux/module.h>
29 #include <linux/init.h>
30 #include <linux/slab.h>
31 #include <linux/pagemap.h>
32 #include <asm/div64.h>
33 #include <linux/seq_file.h>
35 #include <liblustre.h>
37 #include <linux/ext2_fs.h>
39 #include <linux/obd_support.h>
40 #include <linux/lustre_lib.h>
41 #include <linux/lustre_net.h>
42 #include <linux/lustre_idl.h>
43 #include <linux/lustre_dlm.h>
44 #include <linux/lustre_mds.h>
45 #include <linux/obd_class.h>
46 #include <linux/obd_ost.h>
47 #include <linux/lprocfs_status.h>
48 #include <linux/lustre_fsfilt.h>
49 #include <linux/obd_lmv.h>
50 #include "lmv_internal.h"
54 * -EINVAL : UUID can't be found in the LMV's target list
55 * -ENOTCONN: The UUID is found, but the target connection is bad (!)
56 * -EBADF : The UUID is found, but the OBD of the wrong type (!)
58 static int lmv_set_mdc_active(struct lmv_obd *lmv, struct obd_uuid *uuid,
61 struct obd_device *obd;
62 struct lmv_tgt_desc *tgt;
66 CDEBUG(D_INFO, "Searching in lmv %p for uuid %s (activate=%d)\n",
67 lmv, uuid->uuid, activate);
69 spin_lock(&lmv->lmv_lock);
70 for (i = 0, tgt = lmv->tgts; i < lmv->desc.ld_tgt_count; i++, tgt++) {
71 if (tgt->ltd_exp == NULL)
74 CDEBUG(D_INFO, "lmv idx %d is %s conn "LPX64"\n",
75 i, tgt->uuid.uuid, tgt->ltd_exp->exp_handle.h_cookie);
76 if (strncmp(uuid->uuid, tgt->uuid.uuid, sizeof uuid->uuid) == 0)
80 if (i == lmv->desc.ld_tgt_count)
81 GOTO(out, rc = -EINVAL);
83 obd = class_exp2obd(tgt->ltd_exp);
85 GOTO(out, rc = -ENOTCONN);
87 CDEBUG(D_INFO, "Found OBD %s=%s device %d (%p) type %s at LMV idx %d\n",
88 obd->obd_name, obd->obd_uuid.uuid, obd->obd_minor, obd,
89 obd->obd_type->typ_name, i);
90 LASSERT(strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) == 0);
92 if (tgt->active == activate) {
93 CDEBUG(D_INFO, "OBD %p already %sactive!\n", obd,
94 activate ? "" : "in");
98 CDEBUG(D_INFO, "Marking OBD %p %sactive\n", obd, activate ? "" : "in");
100 tgt->active = activate;
102 lmv->desc.ld_active_tgt_count++;
104 lmv->desc.ld_active_tgt_count--;
108 spin_unlock(&lmv->lmv_lock);
112 static int lmv_notify(struct obd_device *obd, struct obd_device *watched,
116 struct obd_uuid *uuid;
118 if (strcmp(watched->obd_type->typ_name, LUSTRE_MDC_NAME)) {
119 CERROR("unexpected notification of %s %s!\n",
120 watched->obd_type->typ_name,
124 uuid = &watched->u.cli.cl_import->imp_target_uuid;
126 /* Set MDC as active before notifying the observer, so the
127 * observer can use the MDC normally.
129 rc = lmv_set_mdc_active(&obd->u.lmv, uuid, active);
131 CERROR("%sactivation of %s failed: %d\n",
132 active ? "" : "de", uuid->uuid, rc);
136 if (obd->obd_observer)
137 /* Pass the notification up the chain. */
138 rc = obd_notify(obd->obd_observer, watched, active);
143 int lmv_attach(struct obd_device *dev, obd_count len, void *data)
145 struct lprocfs_static_vars lvars;
149 lprocfs_init_vars(lmv, &lvars);
150 rc = lprocfs_obd_attach(dev, lvars.obd_vars);
153 struct proc_dir_entry *entry;
155 entry = create_proc_entry("target_obd", 0444, dev->obd_proc_entry);
158 /* entry->proc_fops = &lmv_proc_target_fops; */
165 int lmv_detach(struct obd_device *dev)
167 return lprocfs_obd_detach(dev);
170 /* This is fake connect function. Its purpose is to initialize lmv and
171 * say caller that everything is okay. Real connection will be performed
173 static int lmv_connect(struct lustre_handle *conn, struct obd_device *obd,
174 struct obd_uuid *cluuid)
176 struct lmv_obd *lmv = &obd->u.lmv;
177 struct obd_export *exp;
181 rc = class_connect(conn, obd, cluuid);
183 CERROR("class_connection() returned %d\n", rc);
187 exp = class_conn2export(conn);
188 /* We don't want to actually do the underlying connections more than
189 * once, so keep track. */
191 if (lmv->refcount > 1) {
192 class_export_put(exp);
196 lmv->cluuid = *cluuid;
203 void lmv_set_timeouts(struct obd_device *obd)
205 struct lmv_tgt_desc *tgts;
210 if (lmv->server_timeout == 0)
213 if (lmv->connected == 0)
216 for (i = 0, tgts = lmv->tgts; i < lmv->desc.ld_tgt_count; i++, tgts++) {
217 if (tgts->ltd_exp == NULL)
219 obd_set_info(tgts->ltd_exp, strlen("inter_mds"),
220 "inter_mds", 0, NULL);
224 /* Performs a check if passed obd is connected. If no - connect it. */
225 int lmv_check_connect(struct obd_device *obd) {
226 struct lmv_obd *lmv = &obd->u.lmv;
227 struct obd_uuid *cluuid;
228 struct lmv_tgt_desc *tgts;
229 struct obd_export *exp;
236 cluuid = &lmv->cluuid;
239 CDEBUG(D_OTHER, "time to connect %s to %s\n",
240 cluuid->uuid, obd->obd_name);
242 for (i = 0, tgts = lmv->tgts; i < lmv->desc.ld_tgt_count; i++, tgts++) {
243 struct obd_device *tgt_obd;
244 struct obd_uuid lmv_osc_uuid = { "LMV_OSC_UUID" };
245 struct lustre_handle conn = {0, };
247 LASSERT(tgts != NULL);
249 tgt_obd = class_find_client_obd(&tgts->uuid, LUSTRE_MDC_NAME,
252 CERROR("Target %s not attached\n", tgts->uuid.uuid);
253 GOTO(out_disc, rc = -EINVAL);
256 /* for MDS: don't connect to yourself */
257 if (obd_uuid_equals(&tgts->uuid, cluuid)) {
258 CDEBUG(D_OTHER, "don't connect back to %s\n",
260 tgts->ltd_exp = NULL;
264 CDEBUG(D_OTHER, "connect to %s(%s) - %s, %s FOR %s\n",
265 tgt_obd->obd_name, tgt_obd->obd_uuid.uuid,
266 tgts->uuid.uuid, obd->obd_uuid.uuid,
269 if (!tgt_obd->obd_set_up) {
270 CERROR("Target %s not set up\n", tgts->uuid.uuid);
271 GOTO(out_disc, rc = -EINVAL);
274 rc = obd_connect(&conn, tgt_obd, &lmv_osc_uuid);
276 CERROR("Target %s connect error %d\n",
277 tgts->uuid.uuid, rc);
280 tgts->ltd_exp = class_conn2export(&conn);
282 obd_init_ea_size(tgts->ltd_exp, lmv->max_easize,
283 lmv->max_cookiesize);
285 rc = obd_register_observer(tgt_obd, obd);
287 CERROR("Target %s register_observer error %d\n",
288 tgts->uuid.uuid, rc);
289 obd_disconnect(tgts->ltd_exp, 0);
293 lmv->desc.ld_active_tgt_count++;
296 CDEBUG(D_OTHER, "connected to %s(%s) successfully (%d)\n",
297 tgt_obd->obd_name, tgt_obd->obd_uuid.uuid,
298 atomic_read(&obd->obd_refcount));
301 lmv_set_timeouts(obd);
303 class_export_put(exp);
308 struct obd_uuid uuid;
310 --lmv->desc.ld_active_tgt_count;
312 /* save for CERROR below; (we know it's terminated) */
314 rc2 = obd_disconnect(tgts->ltd_exp, 0);
316 CERROR("error: LMV target %s disconnect on MDT idx %d: "
317 "rc = %d\n", uuid.uuid, i, rc2);
319 class_disconnect(exp, 0);
323 static int lmv_disconnect(struct obd_export *exp, int flags)
325 struct obd_device *obd = class_exp2obd(exp);
326 struct lmv_obd *lmv = &obd->u.lmv;
333 /* Only disconnect the underlying layers on the final disconnect. */
335 if (lmv->refcount != 0)
338 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
339 if (lmv->tgts[i].ltd_exp == NULL)
342 if (obd->obd_no_recov) {
343 /* Pass it on to our clients.
344 * XXX This should be an argument to disconnect,
345 * XXX not a back-door flag on the OBD. Ah well.
347 struct obd_device *mdc_obd;
348 mdc_obd = class_exp2obd(lmv->tgts[i].ltd_exp);
350 mdc_obd->obd_no_recov = 1;
353 CDEBUG(D_OTHER, "disconnected from %s(%s) successfully\n",
354 lmv->tgts[i].ltd_exp->exp_obd->obd_name,
355 lmv->tgts[i].ltd_exp->exp_obd->obd_uuid.uuid);
357 obd_register_observer(lmv->tgts[i].ltd_exp->exp_obd, NULL);
359 rc = obd_disconnect(lmv->tgts[i].ltd_exp, flags);
361 if (lmv->tgts[i].active) {
362 CERROR("Target %s disconnect error %d\n",
363 lmv->tgts[i].uuid.uuid, rc);
367 if (lmv->tgts[i].active) {
368 lmv->desc.ld_active_tgt_count--;
369 lmv->tgts[i].active = 0;
371 lmv->tgts[i].ltd_exp = NULL;
375 /* This is the case when no real connection is established by
376 * lmv_check_connect(). */
378 class_export_put(exp);
379 rc = class_disconnect(exp, 0);
383 static int lmv_iocontrol(unsigned int cmd, struct obd_export *exp,
384 int len, void *karg, void *uarg)
386 struct obd_device *obddev = class_exp2obd(exp);
387 struct lmv_obd *lmv = &obddev->u.lmv;
388 int i, rc = 0, set = 0;
392 if (lmv->desc.ld_tgt_count == 0)
395 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
398 err = obd_iocontrol(cmd, lmv->tgts[i].ltd_exp,
401 if (lmv->tgts[i].active) {
402 CERROR("error: iocontrol MDC %s on MDT"
403 "idx %d: err = %d\n",
404 lmv->tgts[i].uuid.uuid, i, err);
417 static int lmv_setup(struct obd_device *obd, obd_count len, void *buf)
419 struct lustre_cfg *lcfg = buf;
420 struct lmv_desc *desc;
421 struct lmv_obd *lmv = &obd->u.lmv;
422 struct obd_uuid *uuids;
423 struct lmv_tgt_desc *tgts;
428 if (lcfg->lcfg_inllen1 < 1) {
429 CERROR("LMV setup requires a descriptor\n");
433 if (lcfg->lcfg_inllen2 < 1) {
434 CERROR("LMV setup requires an OST UUID list\n");
438 desc = (struct lmv_desc *)lcfg->lcfg_inlbuf1;
439 if (sizeof(*desc) > lcfg->lcfg_inllen1) {
440 CERROR("descriptor size wrong: %d > %d\n",
441 (int)sizeof(*desc), lcfg->lcfg_inllen1);
445 uuids = (struct obd_uuid *)lcfg->lcfg_inlbuf2;
446 if (sizeof(*uuids) * desc->ld_tgt_count != lcfg->lcfg_inllen2) {
447 CERROR("UUID array size wrong: %u * %u != %u\n",
448 sizeof(*uuids), desc->ld_tgt_count, lcfg->lcfg_inllen2);
452 lmv->bufsize = sizeof(struct lmv_tgt_desc) * desc->ld_tgt_count;
453 OBD_ALLOC(lmv->tgts, lmv->bufsize);
454 if (lmv->tgts == NULL) {
455 CERROR("Out of memory\n");
460 spin_lock_init(&lmv->lmv_lock);
462 for (i = 0, tgts = lmv->tgts; i < desc->ld_tgt_count; i++, tgts++)
463 tgts->uuid = uuids[i];
465 lmv->max_easize = sizeof(struct ll_fid) *
466 desc->ld_tgt_count + sizeof(struct mea);
468 lmv->max_cookiesize = 0;
473 static int lmv_statfs(struct obd_device *obd, struct obd_statfs *osfs,
474 unsigned long max_age)
476 struct lmv_obd *lmv = &obd->u.lmv;
477 struct obd_statfs temp;
481 rc = lmv_check_connect(obd);
485 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
486 rc = obd_statfs(lmv->tgts[i].ltd_exp->exp_obd, &temp, max_age);
488 CERROR("can't stat MDS #%d (%s)\n", i,
489 lmv->tgts[i].ltd_exp->exp_obd->obd_name);
493 memcpy(osfs, &temp, sizeof(temp));
495 osfs->os_bavail += temp.os_bavail;
496 osfs->os_blocks += temp.os_blocks;
497 osfs->os_ffree += temp.os_ffree;
498 osfs->os_files += temp.os_files;
504 static int lmv_cleanup(struct obd_device *obd, int flags)
506 struct lmv_obd *lmv = &obd->u.lmv;
508 lmv_cleanup_objs(obd);
509 OBD_FREE(lmv->tgts, lmv->bufsize);
513 static int lmv_getstatus(struct obd_export *exp, struct ll_fid *fid)
515 struct obd_device *obd = exp->exp_obd;
516 struct lmv_obd *lmv = &obd->u.lmv;
519 rc = lmv_check_connect(obd);
522 rc = md_getstatus(lmv->tgts[0].ltd_exp, fid);
527 static int lmv_getattr(struct obd_export *exp, struct ll_fid *fid,
528 unsigned long valid, unsigned int ea_size,
529 struct ptlrpc_request **request)
531 struct obd_device *obd = exp->exp_obd;
532 struct lmv_obd *lmv = &obd->u.lmv;
533 int rc, i = fid->mds;
536 rc = lmv_check_connect(obd);
539 obj = lmv_grab_obj(obd, fid, 0);
540 CDEBUG(D_OTHER, "GETATTR for %lu/%lu/%lu %s\n",
541 (unsigned long) fid->mds,
542 (unsigned long) fid->id,
543 (unsigned long) fid->generation,
544 obj ? "(splitted)" : "");
546 LASSERT(fid->mds < lmv->desc.ld_tgt_count);
547 rc = md_getattr(lmv->tgts[i].ltd_exp, fid,
548 valid, ea_size, request);
549 if (rc == 0 && obj) {
550 /* we have to loop over dirobjs here and gather attrs
551 * for all the slaves */
552 #warning "attrs gathering here"
558 static int lmv_change_cbdata(struct obd_export *exp,
560 ldlm_iterator_t it, void *data)
562 struct obd_device *obd = exp->exp_obd;
563 struct lmv_obd *lmv = &obd->u.lmv;
567 rc = lmv_check_connect(obd);
570 CDEBUG(D_OTHER, "CBDATA for %lu/%lu/%lu\n",
571 (unsigned long) fid->mds,
572 (unsigned long) fid->id,
573 (unsigned long) fid->generation);
574 LASSERT(fid->mds < lmv->desc.ld_tgt_count);
575 rc = md_change_cbdata(lmv->tgts[fid->mds].ltd_exp, fid, it, data);
579 static int lmv_change_cbdata_name(struct obd_export *exp, struct ll_fid *pfid,
580 char *name, int len, struct ll_fid *cfid,
581 ldlm_iterator_t it, void *data)
583 struct obd_device *obd = exp->exp_obd;
584 struct lmv_obd *lmv = &obd->u.lmv;
588 rc = lmv_check_connect(obd);
591 LASSERT(pfid->mds < lmv->desc.ld_tgt_count);
592 LASSERT(cfid->mds < lmv->desc.ld_tgt_count);
593 CDEBUG(D_OTHER, "CBDATA for %lu/%lu/%lu:%*s -> %lu/%lu/%lu\n",
594 (unsigned long) pfid->mds, (unsigned long) pfid->id,
595 (unsigned long) pfid->generation, len, name,
596 (unsigned long) cfid->mds, (unsigned long) cfid->id,
597 (unsigned long) cfid->generation);
599 /* this is default mds for directory name belongs to */
601 obj = lmv_grab_obj(obd, pfid, 0);
603 /* directory is splitted. look for right mds for this name */
604 mds = raw_name2idx(obj->objcount, name, len);
607 rc = md_change_cbdata(lmv->tgts[mds].ltd_exp, cfid, it, data);
611 static int lmv_valid_attrs(struct obd_export *exp, struct ll_fid *fid)
613 struct obd_device *obd = exp->exp_obd;
614 struct lmv_obd *lmv = &obd->u.lmv;
617 rc = lmv_check_connect(obd);
620 CDEBUG(D_OTHER, "validate %lu/%lu/%lu\n",
621 (unsigned long) fid->mds,
622 (unsigned long) fid->id,
623 (unsigned long) fid->generation);
624 LASSERT(fid->mds < lmv->desc.ld_tgt_count);
625 rc = md_valid_attrs(lmv->tgts[fid->mds].ltd_exp, fid);
629 int lmv_close(struct obd_export *exp, struct obdo *obdo,
630 struct obd_client_handle *och,
631 struct ptlrpc_request **request)
633 struct obd_device *obd = exp->exp_obd;
634 struct lmv_obd *lmv = &obd->u.lmv;
635 int rc, i = obdo->o_mds;
637 rc = lmv_check_connect(obd);
640 LASSERT(i < lmv->desc.ld_tgt_count);
641 CDEBUG(D_OTHER, "CLOSE %lu/%lu/%lu\n", (unsigned long) obdo->o_mds,
642 (unsigned long) obdo->o_id, (unsigned long) obdo->o_generation);
643 rc = md_close(lmv->tgts[i].ltd_exp, obdo, och, request);
647 int lmv_get_mea_and_update_object(struct obd_export *exp, struct ll_fid *fid)
649 struct obd_device *obd = exp->exp_obd;
650 struct lmv_obd *lmv = &obd->u.lmv;
651 struct ptlrpc_request *req = NULL;
657 mealen = MEA_SIZE_LMV(lmv);
659 valid = OBD_MD_FLEASIZE | OBD_MD_FLDIREA;
661 /* time to update mea of parent fid */
662 rc = md_getattr(lmv->tgts[fid->mds].ltd_exp, fid,
663 valid, mealen, &req);
665 CERROR("md_getattr() failed, rc = %d\n", rc);
669 rc = mdc_req2lustre_md(exp, req, 0, NULL, &md);
671 CERROR("mdc_req2lustre_md() failed, rc = %d\n", rc);
676 GOTO(cleanup, rc = -ENODATA);
678 rc = lmv_create_obj_from_attrs(exp, fid, md.mea);
679 obd_free_memmd(exp, (struct lov_stripe_md **) &md.mea);
683 ptlrpc_req_finished(req);
687 int lmv_create(struct obd_export *exp, struct mdc_op_data *op_data,
688 const void *data, int datalen, int mode, __u32 uid,
689 __u32 gid, __u64 rdev, struct ptlrpc_request **request)
691 struct obd_device *obd = exp->exp_obd;
692 struct lmv_obd *lmv = &obd->u.lmv;
693 struct mds_body *mds_body;
698 rc = lmv_check_connect(obd);
702 if (!lmv->desc.ld_active_tgt_count)
705 obj = lmv_grab_obj(obd, &op_data->fid1, 0);
707 mds = raw_name2idx(obj->objcount, op_data->name,
709 op_data->fid1 = obj->objs[mds].fid;
713 CDEBUG(D_OTHER, "CREATE '%*s' on %lu/%lu/%lu\n",
714 op_data->namelen, op_data->name,
715 (unsigned long) op_data->fid1.mds,
716 (unsigned long) op_data->fid1.id,
717 (unsigned long) op_data->fid1.generation);
718 rc = md_create(lmv->tgts[op_data->fid1.mds].ltd_exp, op_data, data,
719 datalen, mode, uid, gid, rdev, request);
721 if (*request == NULL)
723 mds_body = lustre_msg_buf((*request)->rq_repmsg, 0,
725 LASSERT(mds_body != NULL);
726 CDEBUG(D_OTHER, "created. id = %lu, generation = %lu, mds = %d\n",
727 (unsigned long) mds_body->fid1.id,
728 (unsigned long) mds_body->fid1.generation,
730 LASSERT(mds_body->valid & OBD_MD_MDS ||
731 mds_body->mds == op_data->fid1.mds);
732 } else if (rc == -ERESTART) {
733 /* directory got splitted. time to update local object
734 * and repeat the request with proper MDS */
735 rc = lmv_get_mea_and_update_object(exp, &op_data->fid1);
737 ptlrpc_req_finished(*request);
744 int lmv_done_writing(struct obd_export *exp, struct obdo *obdo)
746 struct obd_device *obd = exp->exp_obd;
747 struct lmv_obd *lmv = &obd->u.lmv;
750 rc = lmv_check_connect(obd);
754 /* FIXME: choose right MDC here */
755 CWARN("this method isn't implemented yet\n");
756 rc = md_done_writing(lmv->tgts[0].ltd_exp, obdo);
760 int lmv_enqueue_slaves(struct obd_export *exp, int locktype,
761 struct lookup_intent *it, int lockmode,
762 struct mdc_op_data *data, struct lustre_handle *lockh,
763 void *lmm, int lmmsize,
764 ldlm_completion_callback cb_completion,
765 ldlm_blocking_callback cb_blocking, void *cb_data)
767 struct obd_device *obd = exp->exp_obd;
768 struct lmv_obd *lmv = &obd->u.lmv;
769 struct mea *mea = data->mea1;
770 struct mdc_op_data data2;
774 LASSERT(mea != NULL);
775 for (i = 0; i < mea->mea_count; i++) {
776 if (lmv->tgts[i].ltd_exp == NULL)
779 memset(&data2, 0, sizeof(data2));
780 data2.fid1 = mea->mea_fids[i];
781 mds = data2.fid1.mds;
782 rc = md_enqueue(lmv->tgts[mds].ltd_exp, locktype, it, lockmode,
783 &data2, lockh + i, lmm, lmmsize, cb_completion,
784 cb_blocking, cb_data);
785 CDEBUG(D_OTHER, "take lock on slave %lu/%lu/%lu -> %d/%d\n",
786 (unsigned long) mea->mea_fids[i].mds,
787 (unsigned long) mea->mea_fids[i].id,
788 (unsigned long) mea->mea_fids[i].generation,
789 rc, it->d.lustre.it_status);
792 if (it->d.lustre.it_data) {
793 struct ptlrpc_request *req;
794 req = (struct ptlrpc_request *) it->d.lustre.it_data;
795 ptlrpc_req_finished(req);
798 if (it->d.lustre.it_status)
799 GOTO(cleanup, rc = it->d.lustre.it_status);
804 /* drop all taken locks */
807 ldlm_lock_decref(lockh + i, lockmode);
813 int lmv_enqueue(struct obd_export *exp, int lock_type,
814 struct lookup_intent *it, int lock_mode,
815 struct mdc_op_data *data, struct lustre_handle *lockh,
816 void *lmm, int lmmsize,
817 ldlm_completion_callback cb_completion,
818 ldlm_blocking_callback cb_blocking, void *cb_data)
820 struct obd_device *obd = exp->exp_obd;
821 struct lmv_obd *lmv = &obd->u.lmv;
826 rc = lmv_check_connect(obd);
830 if (it->it_op == IT_UNLINK) {
831 rc = lmv_enqueue_slaves(exp, lock_type, it, lock_mode,
832 data, lockh, lmm, lmmsize,
833 cb_completion, cb_blocking, cb_data);
838 obj = lmv_grab_obj(obd, &data->fid1, 0);
840 /* directory is splitted. look for
841 * right mds for this name */
842 mds = raw_name2idx(obj->objcount, (char *)data->name,
844 data->fid1 = obj->objs[mds].fid;
848 CDEBUG(D_OTHER, "ENQUEUE '%s' on %lu/%lu\n",
849 LL_IT2STR(it), (unsigned long) data->fid1.id,
850 (unsigned long) data->fid1.generation);
851 rc = md_enqueue(lmv->tgts[data->fid1.mds].ltd_exp, lock_type, it,
852 lock_mode, data, lockh, lmm, lmmsize, cb_completion,
853 cb_blocking, cb_data);
858 int lmv_getattr_name(struct obd_export *exp, struct ll_fid *fid,
859 char *filename, int namelen, unsigned long valid,
860 unsigned int ea_size, struct ptlrpc_request **request)
862 struct obd_device *obd = exp->exp_obd;
863 struct lmv_obd *lmv = &obd->u.lmv;
864 struct ll_fid rfid = *fid;
865 int rc, mds = fid->mds;
866 struct mds_body *body;
869 rc = lmv_check_connect(obd);
873 obj = lmv_grab_obj(obd, fid, 0);
875 /* directory is splitted. look for right mds for this name */
876 mds = raw_name2idx(obj->objcount, filename, namelen - 1);
877 rfid = obj->objs[mds].fid;
880 CDEBUG(D_OTHER, "getattr_name for %*s on %lu/%lu/%lu -> %lu/%lu/%lu\n",
881 namelen, filename, (unsigned long) fid->mds,
882 (unsigned long) fid->id, (unsigned long) fid->generation,
883 (unsigned long) rfid.mds, (unsigned long) rfid.id,
884 (unsigned long) rfid.generation);
885 rc = md_getattr_name(lmv->tgts[mds].ltd_exp, &rfid, filename, namelen,
886 valid, ea_size, request);
888 /* this could be cross-node reference. in this case all
889 * we have right now is mds/ino/generation triple. we'd
890 * like to find other attributes */
891 body = lustre_msg_buf((*request)->rq_repmsg, 0, sizeof(*body));
892 LASSERT(body != NULL);
893 if (body->valid & OBD_MD_MDS) {
894 struct ptlrpc_request *req = NULL;
896 CDEBUG(D_OTHER, "request attrs for %lu/%lu/%lu\n",
897 (unsigned long) rfid.mds,
898 (unsigned long) rfid.id,
899 (unsigned long) rfid.generation);
900 rc = md_getattr_name(lmv->tgts[rfid.mds].ltd_exp, &rfid,
901 NULL, 1, valid, ea_size, &req);
902 ptlrpc_req_finished(*request);
905 } else if (rc == -ERESTART) {
906 /* directory got splitted. time to update local object
907 * and repeat the request with proper MDS */
908 rc = lmv_get_mea_and_update_object(exp, &rfid);
910 ptlrpc_req_finished(*request);
919 * llite passes fid of an target inode in data->fid1 and
920 * fid of directory in data->fid2
922 int lmv_link(struct obd_export *exp, struct mdc_op_data *data,
923 struct ptlrpc_request **request)
925 struct obd_device *obd = exp->exp_obd;
926 struct lmv_obd *lmv = &obd->u.lmv;
930 rc = lmv_check_connect(obd);
933 if (data->namelen != 0) {
934 /* usual link request */
935 obj = lmv_grab_obj(obd, &data->fid1, 0);
937 rc = raw_name2idx(obj->objcount, data->name,
939 data->fid1 = obj->objs[rc].fid;
942 CDEBUG(D_OTHER,"link %u/%u/%u:%*s to %u/%u/%u mds %d\n",
943 (unsigned) data->fid2.mds, (unsigned) data->fid2.id,
944 (unsigned) data->fid2.generation, data->namelen,
945 data->name, (unsigned) data->fid1.mds,
946 (unsigned) data->fid1.id,
947 (unsigned) data->fid1.generation, data->fid1.mds);
949 /* request from MDS to acquire i_links for inode by fid1 */
950 CDEBUG(D_OTHER, "inc i_nlinks for %u/%u/%u\n",
951 (unsigned) data->fid1.mds, (unsigned) data->fid1.id,
952 (unsigned) data->fid1.generation);
955 rc = md_link(lmv->tgts[data->fid1.mds].ltd_exp, data, request);
959 int lmv_rename(struct obd_export *exp, struct mdc_op_data *data,
960 const char *old, int oldlen, const char *new, int newlen,
961 struct ptlrpc_request **request)
963 struct obd_device *obd = exp->exp_obd;
964 struct lmv_obd *lmv = &obd->u.lmv;
969 CDEBUG(D_OTHER, "rename %*s in %lu/%lu/%lu to %*s in %lu/%lu/%lu\n",
970 oldlen, old, (unsigned long) data->fid1.mds,
971 (unsigned long) data->fid1.id,
972 (unsigned long) data->fid1.generation,
973 newlen, new, (unsigned long) data->fid2.mds,
974 (unsigned long) data->fid2.id,
975 (unsigned long) data->fid2.generation);
976 if (!fid_equal(&data->fid1, &data->fid2))
977 CWARN("cross-node rename %lu/%lu/%lu:%*s to %lu/%lu/%lu:%*s\n",
978 (unsigned long) data->fid1.mds,
979 (unsigned long) data->fid1.id,
980 (unsigned long) data->fid1.generation, oldlen, old,
981 (unsigned long) data->fid2.mds,
982 (unsigned long) data->fid2.id,
983 (unsigned long) data->fid2.generation, newlen, new);
985 rc = lmv_check_connect(obd);
990 /* MDS with old dir entry is asking another MDS
991 * to create name there */
993 "create %*s(%d/%d) in %lu/%lu/%lu pointing to %lu/%lu/%lu\n",
994 newlen, new, oldlen, newlen,
995 (unsigned long) data->fid2.mds,
996 (unsigned long) data->fid2.id,
997 (unsigned long) data->fid2.generation,
998 (unsigned long) data->fid1.mds,
999 (unsigned long) data->fid1.id,
1000 (unsigned long) data->fid1.generation);
1001 mds = data->fid2.mds;
1005 obj = lmv_grab_obj(obd, &data->fid1, 0);
1007 /* directory is already splitted, so we have to forward
1008 * request to the right MDS */
1009 mds = raw_name2idx(obj->objcount, (char *)old, oldlen);
1010 data->fid1 = obj->objs[mds].fid;
1011 CDEBUG(D_OTHER, "forward to MDS #%u (%lu/%lu/%lu)\n", mds,
1012 (unsigned long) obj->objs[mds].fid.mds,
1013 (unsigned long) obj->objs[mds].fid.id,
1014 (unsigned long) obj->objs[mds].fid.generation);
1018 obj = lmv_grab_obj(obd, &data->fid2, 0);
1020 /* directory is already splitted, so we have to forward
1021 * request to the right MDS */
1022 mds = raw_name2idx(obj->objcount, (char *)new, newlen);
1023 data->fid2 = obj->objs[mds].fid;
1024 CDEBUG(D_OTHER, "forward to MDS #%u (%lu/%lu/%lu)\n", mds,
1025 (unsigned long) obj->objs[mds].fid.mds,
1026 (unsigned long) obj->objs[mds].fid.id,
1027 (unsigned long) obj->objs[mds].fid.generation);
1031 mds = data->fid1.mds;
1034 rc = md_rename(lmv->tgts[mds].ltd_exp, data, old, oldlen,
1035 new, newlen, request);
1039 int lmv_setattr(struct obd_export *exp, struct mdc_op_data *data,
1040 struct iattr *iattr, void *ea, int ealen, void *ea2, int ea2len,
1041 struct ptlrpc_request **request)
1043 struct obd_device *obd = exp->exp_obd;
1044 struct lmv_obd *lmv = &obd->u.lmv;
1045 int rc = 0, i = data->fid1.mds;
1046 struct ptlrpc_request *req;
1047 struct mds_body *mds_body;
1048 struct lmv_obj *obj;
1051 rc = lmv_check_connect(obd);
1055 obj = lmv_grab_obj(obd, &data->fid1, 0);
1056 CDEBUG(D_OTHER, "SETATTR for %lu/%lu/%lu, valid 0x%x%s\n",
1057 (unsigned long) data->fid1.mds,
1058 (unsigned long) data->fid1.id,
1059 (unsigned long) data->fid1.generation, iattr->ia_valid,
1060 obj ? ", splitted" : "");
1062 for (i = 0; i < obj->objcount; i++) {
1063 data->fid1 = obj->objs[i].fid;
1064 rc = md_setattr(lmv->tgts[i].ltd_exp, data, iattr, ea,
1065 ealen, ea2, ea2len, &req);
1067 if (fid_equal(&obj->fid, &obj->objs[i].fid)) {
1068 /* this is master object and this request
1069 * should be returned back to llite */
1072 ptlrpc_req_finished(req);
1077 LASSERT(data->fid1.mds < lmv->desc.ld_tgt_count);
1078 rc = md_setattr(lmv->tgts[i].ltd_exp, data, iattr, ea, ealen,
1079 ea2, ea2len, request);
1081 mds_body = lustre_msg_buf((*request)->rq_repmsg, 0,
1083 LASSERT(mds_body != NULL);
1084 LASSERT(mds_body->mds == i);
1090 int lmv_sync(struct obd_export *exp, struct ll_fid *fid,
1091 struct ptlrpc_request **request)
1093 struct obd_device *obd = exp->exp_obd;
1094 struct lmv_obd *lmv = &obd->u.lmv;
1098 rc = lmv_check_connect(obd);
1102 rc = md_sync(lmv->tgts[0].ltd_exp, fid, request);
1106 int lmv_dirobj_blocking_ast(struct ldlm_lock *lock,
1107 struct ldlm_lock_desc *desc, void *data, int flag)
1109 struct lustre_handle lockh;
1110 struct lmv_obj *obj;
1115 case LDLM_CB_BLOCKING:
1116 ldlm_lock2handle(lock, &lockh);
1117 rc = ldlm_cli_cancel(&lockh);
1119 CDEBUG(D_INODE, "ldlm_cli_cancel: %d\n", rc);
1123 case LDLM_CB_CANCELING:
1124 /* time to drop cached attrs for dirobj */
1125 obj = lock->l_ast_data;
1129 CDEBUG(D_OTHER, "cancel %s on %lu/%lu, master %lu/%lu/%lu\n",
1130 lock->l_resource->lr_name.name[3] == 1 ?
1131 "LOOKUP" : "UPDATE",
1132 (unsigned long) lock->l_resource->lr_name.name[0],
1133 (unsigned long) lock->l_resource->lr_name.name[1],
1134 (unsigned long) obj->fid.mds,
1135 (unsigned long) obj->fid.id,
1136 (unsigned long) obj->fid.generation);
1144 void lmv_remove_dots(struct page *page)
1146 char *kaddr = page_address(page);
1147 unsigned limit = PAGE_CACHE_SIZE;
1148 unsigned offs, rec_len;
1149 struct ext2_dir_entry_2 *p;
1151 for (offs = 0; offs <= limit - EXT2_DIR_REC_LEN(1); offs += rec_len) {
1152 p = (struct ext2_dir_entry_2 *)(kaddr + offs);
1153 rec_len = le16_to_cpu(p->rec_len);
1155 if ((p->name_len == 1 && p->name[0] == '.') ||
1156 (p->name_len == 2 && p->name[0] == '.' && p->name[1] == '.'))
1161 int lmv_readpage(struct obd_export *exp, struct ll_fid *mdc_fid,
1162 __u64 offset, struct page *page,
1163 struct ptlrpc_request **request)
1165 struct obd_device *obd = exp->exp_obd;
1166 struct lmv_obd *lmv = &obd->u.lmv;
1167 struct ll_fid rfid = *mdc_fid;
1168 struct lmv_obj *obj;
1172 rc = lmv_check_connect(obd);
1176 LASSERT(mdc_fid->mds < lmv->desc.ld_tgt_count);
1177 CDEBUG(D_OTHER, "READPAGE at %llu from %lu/%lu/%lu\n",
1178 offset, (unsigned long) rfid.mds,
1179 (unsigned long) rfid.id,
1180 (unsigned long) rfid.generation);
1182 obj = lmv_grab_obj(obd, mdc_fid, 0);
1184 /* find dirobj containing page with requested offset */
1185 /* FIXME: what about protecting cached attrs here? */
1186 for (i = 0; i < obj->objcount; i++) {
1187 if (offset < obj->objs[i].size)
1189 offset -= obj->objs[i].size;
1191 rfid = obj->objs[i].fid;
1192 CDEBUG(D_OTHER, "forward to %lu/%lu/%lu with offset %lu\n",
1193 (unsigned long) rfid.mds,
1194 (unsigned long) rfid.id,
1195 (unsigned long) rfid.generation,
1196 (unsigned long) offset);
1198 rc = md_readpage(lmv->tgts[rfid.mds].ltd_exp, &rfid, offset, page, request);
1199 if (rc == 0 && !fid_equal(&rfid, mdc_fid)) {
1200 /* this page isn't from master object. to avoid
1201 * ./.. duplication in directory, we have to remove them
1202 * from all slave objects */
1203 lmv_remove_dots(page);
1211 int lmv_unlink_slaves(struct obd_export *exp, struct mdc_op_data *data,
1212 struct ptlrpc_request **req)
1214 struct obd_device *obd = exp->exp_obd;
1215 struct lmv_obd *lmv = &obd->u.lmv;
1216 struct mea *mea = data->mea1;
1217 struct mdc_op_data data2;
1221 LASSERT(mea != NULL);
1222 for (i = 0; i < mea->mea_count; i++) {
1223 if (lmv->tgts[i].ltd_exp == NULL)
1226 memset(&data2, 0, sizeof(data2));
1227 data2.fid1 = mea->mea_fids[i];
1228 data2.create_mode = MDS_MODE_DONT_LOCK | S_IFDIR;
1229 mds = data2.fid1.mds;
1230 rc = md_unlink(lmv->tgts[mds].ltd_exp, &data2, req);
1231 CDEBUG(D_OTHER, "unlink slave %lu/%lu/%lu -> %d\n",
1232 (unsigned long) mea->mea_fids[i].mds,
1233 (unsigned long) mea->mea_fids[i].id,
1234 (unsigned long) mea->mea_fids[i].generation, rc);
1236 ptlrpc_req_finished(*req);
1245 int lmv_unlink(struct obd_export *exp, struct mdc_op_data *data,
1246 struct ptlrpc_request **request)
1248 struct obd_device *obd = exp->exp_obd;
1249 struct lmv_obd *lmv = &obd->u.lmv;
1252 rc = lmv_check_connect(obd);
1256 if (data->namelen == 0 && data->mea1 != NULL) {
1257 /* mds asks to remove slave objects */
1258 rc = lmv_unlink_slaves(exp, data, request);
1260 } else if (data->namelen != 0) {
1261 struct lmv_obj *obj;
1262 obj = lmv_grab_obj(obd, &data->fid1, 0);
1264 i = raw_name2idx(obj->objcount, data->name,
1266 data->fid1 = obj->objs[i].fid;
1269 CDEBUG(D_OTHER, "unlink '%*s' in %lu/%lu/%lu -> %u\n",
1270 data->namelen, data->name,
1271 (unsigned long) data->fid1.mds,
1272 (unsigned long) data->fid1.id,
1273 (unsigned long) data->fid1.generation, i);
1275 CDEBUG(D_OTHER, "drop i_nlink on %lu/%lu/%lu\n",
1276 (unsigned long) data->fid1.mds,
1277 (unsigned long) data->fid1.id,
1278 (unsigned long) data->fid1.generation);
1280 rc = md_unlink(lmv->tgts[data->fid1.mds].ltd_exp, data, request);
1284 struct obd_device *lmv_get_real_obd(struct obd_export *exp,
1285 char *name, int len)
1287 struct obd_device *obd = exp->exp_obd;
1288 struct lmv_obd *lmv = &obd->u.lmv;
1292 rc = lmv_check_connect(obd);
1294 RETURN(ERR_PTR(rc));
1295 obd = lmv->tgts[0].ltd_exp->exp_obd;
1300 int lmv_init_ea_size(struct obd_export *exp, int easize, int cookiesize)
1302 struct obd_device *obd = exp->exp_obd;
1303 struct lmv_obd *lmv = &obd->u.lmv;
1304 int i, rc = 0, change = 0;
1307 if (lmv->max_easize < easize) {
1308 lmv->max_easize = easize;
1311 if (lmv->max_cookiesize < cookiesize) {
1312 lmv->max_cookiesize = cookiesize;
1318 if (lmv->connected == 0)
1321 /* FIXME: error handling? */
1322 for (i = 0; i < lmv->desc.ld_tgt_count; i++)
1323 rc = obd_init_ea_size(lmv->tgts[i].ltd_exp, easize, cookiesize);
1327 int lmv_obd_create_single(struct obd_export *exp, struct obdo *oa,
1328 struct lov_stripe_md **ea, struct obd_trans_info *oti)
1330 struct obd_device *obd = exp->exp_obd;
1331 struct lmv_obd *lmv = &obd->u.lmv;
1332 struct lov_stripe_md obj_md;
1333 struct lov_stripe_md *obj_mdp = &obj_md;
1337 rc = lmv_check_connect(obd);
1341 LASSERT(ea == NULL);
1342 LASSERT(oa->o_mds < lmv->desc.ld_tgt_count);
1344 rc = obd_create(lmv->tgts[oa->o_mds].ltd_exp, oa, &obj_mdp, oti);
1351 * to be called from MDS only
1353 int lmv_obd_create(struct obd_export *exp, struct obdo *oa,
1354 struct lov_stripe_md **ea, struct obd_trans_info *oti)
1356 struct obd_device *obd = exp->exp_obd;
1357 struct lmv_obd *lmv = &obd->u.lmv;
1363 rc = lmv_check_connect(obd);
1367 LASSERT(oa != NULL);
1370 rc = lmv_obd_create_single(exp, oa, NULL, oti);
1375 rc = obd_alloc_diskmd(exp, (struct lov_mds_md **)ea);
1376 LASSERT(*ea != NULL);
1379 mea = (struct mea *)*ea;
1381 mfid.generation = oa->o_generation;
1383 if (!mea->mea_count || mea->mea_count > lmv->desc.ld_tgt_count)
1384 mea->mea_count = lmv->desc.ld_tgt_count;
1386 mea->mea_master = -1;
1388 /* FIXME: error handling? */
1389 for (i = 0, c = 0; c < mea->mea_count &&
1390 i < lmv->desc.ld_tgt_count; i++) {
1391 struct lov_stripe_md obj_md;
1392 struct lov_stripe_md *obj_mdp = &obj_md;
1394 if (lmv->tgts[i].ltd_exp == NULL) {
1395 /* this is master MDS */
1396 mea->mea_fids[c].id = mfid.id;
1397 mea->mea_fids[c].generation = mfid.generation;
1398 mea->mea_fids[c].mds = i;
1399 mea->mea_master = i;
1404 /* "Master" MDS should always be part of stripped dir, so
1406 if (mea->mea_master == -1 && c == mea->mea_count - 1)
1409 oa->o_valid = OBD_MD_FLGENER | OBD_MD_FLTYPE | OBD_MD_FLMODE
1410 | OBD_MD_FLUID | OBD_MD_FLGID | OBD_MD_FLID;
1412 rc = obd_create(lmv->tgts[c].ltd_exp, oa, &obj_mdp, oti);
1413 /* FIXME: error handling here */
1416 mea->mea_fids[c].id = oa->o_id;
1417 mea->mea_fids[c].generation = oa->o_generation;
1418 mea->mea_fids[c].mds = i;
1420 CDEBUG(D_OTHER, "dirobj at mds %d: "LPU64"/%u\n",
1421 i, oa->o_id, oa->o_generation);
1423 LASSERT(c == mea->mea_count);
1424 CDEBUG(D_OTHER, "%d dirobjects created\n", (int) mea->mea_count);
1429 static int lmv_get_info(struct obd_export *exp, __u32 keylen,
1430 void *key, __u32 *vallen, void *val)
1432 struct obd_device *obd;
1433 struct lmv_obd *lmv;
1436 obd = class_exp2obd(exp);
1438 CDEBUG(D_IOCTL, "invalid client cookie "LPX64"\n",
1439 exp->exp_handle.h_cookie);
1444 if (keylen == 6 && memcmp(key, "mdsize", 6) == 0) {
1445 __u32 *mdsize = val;
1446 *vallen = sizeof(__u32);
1447 *mdsize = sizeof(struct ll_fid) * lmv->desc.ld_tgt_count
1448 + sizeof(struct mea);
1450 } else if (keylen == 6 && memcmp(key, "mdsnum", 6) == 0) {
1451 struct obd_uuid *cluuid = &lmv->cluuid;
1452 struct lmv_tgt_desc *tgts;
1453 __u32 *mdsnum = val;
1456 for (i = 0, tgts = lmv->tgts; i < lmv->desc.ld_tgt_count; i++, tgts++) {
1457 if (obd_uuid_equals(&tgts->uuid, cluuid)) {
1458 *vallen = sizeof(__u32);
1466 CDEBUG(D_IOCTL, "invalid key\n");
1470 int lmv_set_info(struct obd_export *exp, obd_count keylen,
1471 void *key, obd_count vallen, void *val)
1473 struct obd_device *obd;
1474 struct lmv_obd *lmv;
1477 obd = class_exp2obd(exp);
1479 CDEBUG(D_IOCTL, "invalid client cookie "LPX64"\n",
1480 exp->exp_handle.h_cookie);
1485 if (keylen >= strlen("client") && strcmp(key, "client") == 0) {
1486 struct lmv_tgt_desc *tgts;
1489 rc = lmv_check_connect(obd);
1493 for (i = 0, tgts = lmv->tgts;
1494 i < lmv->desc.ld_tgt_count; i++, tgts++) {
1495 rc = obd_set_info(tgts->ltd_exp, keylen, key, vallen, val);
1500 } else if (keylen >= strlen("inter_mds") && strcmp(key, "inter_mds") == 0) {
1501 lmv->server_timeout = 1;
1502 lmv_set_timeouts(obd);
1509 int lmv_packmd(struct obd_export *exp, struct lov_mds_md **lmmp,
1510 struct lov_stripe_md *lsm)
1512 struct obd_device *obd = class_exp2obd(exp);
1513 struct lmv_obd *lmv = &obd->u.lmv;
1517 mea_size = sizeof(struct ll_fid) *
1518 lmv->desc.ld_tgt_count + sizeof(struct mea);
1522 if (*lmmp && !lsm) {
1523 OBD_FREE(*lmmp, mea_size);
1529 OBD_ALLOC(*lmmp, mea_size);
1537 #warning "MEA packing/convertation must be here! -bzzz"
1538 memcpy(*lmmp, lsm, mea_size);
1542 int lmv_unpackmd(struct obd_export *exp, struct lov_stripe_md **mem_tgt,
1543 struct lov_mds_md *disk_src, int mdsize)
1545 struct obd_device *obd = class_exp2obd(exp);
1546 struct lmv_obd *lmv = &obd->u.lmv;
1547 struct mea **tmea = (struct mea **) mem_tgt;
1548 struct mea *mea = (void *) disk_src;
1552 mea_size = sizeof(struct ll_fid) *
1553 lmv->desc.ld_tgt_count + sizeof(struct mea);
1554 if (mem_tgt == NULL)
1557 if (*mem_tgt != NULL && disk_src == NULL) {
1558 OBD_FREE(*tmea, mea_size);
1562 LASSERT(mea_size == mdsize);
1564 OBD_ALLOC(*tmea, mea_size);
1565 /* FIXME: error handling here */
1566 LASSERT(*tmea != NULL);
1571 #warning "MEA unpacking/convertation must be here! -bzzz"
1572 memcpy(*tmea, mea, mdsize);
1576 int lmv_brw(int rw, struct obd_export *exp, struct obdo *oa,
1577 struct lov_stripe_md *ea, obd_count oa_bufs,
1578 struct brw_page *pgarr, struct obd_trans_info *oti)
1580 struct obd_device *obd = exp->exp_obd;
1581 struct lmv_obd *lmv = &obd->u.lmv;
1582 struct mea *mea = (struct mea *) ea;
1585 LASSERT(oa != NULL);
1586 LASSERT(ea != NULL);
1587 LASSERT(pgarr != NULL);
1588 LASSERT(oa->o_mds < lmv->desc.ld_tgt_count);
1590 oa->o_gr = mea->mea_fids[oa->o_mds].generation;
1591 oa->o_id = mea->mea_fids[oa->o_mds].id;
1592 oa->o_valid = OBD_MD_FLID | OBD_MD_FLGROUP;
1593 err = obd_brw(rw, lmv->tgts[oa->o_mds].ltd_exp, oa,
1594 NULL, oa_bufs, pgarr, oti);
1598 struct obd_ops lmv_obd_ops = {
1599 .o_owner = THIS_MODULE,
1600 .o_attach = lmv_attach,
1601 .o_detach = lmv_detach,
1602 .o_setup = lmv_setup,
1603 .o_cleanup = lmv_cleanup,
1604 .o_connect = lmv_connect,
1605 .o_disconnect = lmv_disconnect,
1606 .o_statfs = lmv_statfs,
1607 .o_get_info = lmv_get_info,
1608 .o_set_info = lmv_set_info,
1609 .o_create = lmv_obd_create,
1610 .o_packmd = lmv_packmd,
1611 .o_unpackmd = lmv_unpackmd,
1613 .o_init_ea_size = lmv_init_ea_size,
1614 .o_notify = lmv_notify,
1615 .o_iocontrol = lmv_iocontrol,
1618 struct md_ops lmv_md_ops = {
1619 .m_getstatus = lmv_getstatus,
1620 .m_getattr = lmv_getattr,
1621 .m_change_cbdata = lmv_change_cbdata,
1622 .m_change_cbdata_name = lmv_change_cbdata_name,
1623 .m_close = lmv_close,
1624 .m_create = lmv_create,
1625 .m_done_writing = lmv_done_writing,
1626 .m_enqueue = lmv_enqueue,
1627 .m_getattr_name = lmv_getattr_name,
1628 .m_intent_lock = lmv_intent_lock,
1630 .m_rename = lmv_rename,
1631 .m_setattr = lmv_setattr,
1633 .m_readpage = lmv_readpage,
1634 .m_unlink = lmv_unlink,
1635 .m_get_real_obd = lmv_get_real_obd,
1636 .m_valid_attrs = lmv_valid_attrs,
1639 int __init lmv_init(void)
1641 struct lprocfs_static_vars lvars;
1644 lprocfs_init_vars(lmv, &lvars);
1645 rc = class_register_type(&lmv_obd_ops, &lmv_md_ops,
1646 lvars.module_vars, OBD_LMV_DEVICENAME);
1651 static void lmv_exit(void)
1653 class_unregister_type(OBD_LMV_DEVICENAME);
1656 MODULE_AUTHOR("Cluster File Systems, Inc. <info@clusterfs.com>");
1657 MODULE_DESCRIPTION("Lustre Logical Metadata Volume OBD driver");
1658 MODULE_LICENSE("GPL");
1660 module_init(lmv_init);
1661 module_exit(lmv_exit);