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 "error %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)
420 struct lmv_desc *desc;
421 struct obd_uuid *uuids;
422 struct lmv_tgt_desc *tgts;
423 struct lustre_cfg *lcfg = buf;
424 struct lmv_obd *lmv = &obd->u.lmv;
427 if (lcfg->lcfg_inllen1 < 1) {
428 CERROR("LMV setup requires a descriptor\n");
432 if (lcfg->lcfg_inllen2 < 1) {
433 CERROR("LMV setup requires an OST UUID list\n");
437 desc = (struct lmv_desc *)lcfg->lcfg_inlbuf1;
438 if (sizeof(*desc) > lcfg->lcfg_inllen1) {
439 CERROR("descriptor size wrong: %d > %d\n",
440 (int)sizeof(*desc), lcfg->lcfg_inllen1);
444 uuids = (struct obd_uuid *)lcfg->lcfg_inlbuf2;
445 if (sizeof(*uuids) * desc->ld_tgt_count != lcfg->lcfg_inllen2) {
446 CERROR("UUID array size wrong: %u * %u != %u\n",
447 sizeof(*uuids), desc->ld_tgt_count, lcfg->lcfg_inllen2);
451 lmv->bufsize = sizeof(struct lmv_tgt_desc) * desc->ld_tgt_count;
452 OBD_ALLOC(lmv->tgts, lmv->bufsize);
453 if (lmv->tgts == NULL) {
454 CERROR("Out of memory\n");
459 spin_lock_init(&lmv->lmv_lock);
461 for (i = 0, tgts = lmv->tgts; i < desc->ld_tgt_count; i++, tgts++)
462 tgts->uuid = uuids[i];
464 lmv->max_cookiesize = 0;
466 lmv->max_easize = sizeof(struct ll_fid) *
467 desc->ld_tgt_count + sizeof(struct mea);
469 rc = lmv_setup_mgr(obd);
471 CERROR("Can't setup LMV object manager, "
473 OBD_FREE(lmv->tgts, lmv->bufsize);
479 static int lmv_statfs(struct obd_device *obd, struct obd_statfs *osfs,
480 unsigned long max_age)
482 struct lmv_obd *lmv = &obd->u.lmv;
483 struct obd_statfs temp;
487 rc = lmv_check_connect(obd);
491 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
492 rc = obd_statfs(lmv->tgts[i].ltd_exp->exp_obd, &temp, max_age);
494 CERROR("can't stat MDS #%d (%s)\n", i,
495 lmv->tgts[i].ltd_exp->exp_obd->obd_name);
499 memcpy(osfs, &temp, sizeof(temp));
501 osfs->os_bavail += temp.os_bavail;
502 osfs->os_blocks += temp.os_blocks;
503 osfs->os_ffree += temp.os_ffree;
504 osfs->os_files += temp.os_files;
510 static int lmv_cleanup(struct obd_device *obd, int flags)
512 struct lmv_obd *lmv = &obd->u.lmv;
514 lmv_cleanup_mgr(obd);
515 OBD_FREE(lmv->tgts, lmv->bufsize);
519 static int lmv_getstatus(struct obd_export *exp, struct ll_fid *fid)
521 struct obd_device *obd = exp->exp_obd;
522 struct lmv_obd *lmv = &obd->u.lmv;
525 rc = lmv_check_connect(obd);
528 rc = md_getstatus(lmv->tgts[0].ltd_exp, fid);
533 static int lmv_getattr(struct obd_export *exp, struct ll_fid *fid,
534 unsigned long valid, unsigned int ea_size,
535 struct ptlrpc_request **request)
537 struct obd_device *obd = exp->exp_obd;
538 struct lmv_obd *lmv = &obd->u.lmv;
539 int rc, i = fid->mds;
543 rc = lmv_check_connect(obd);
547 LASSERT(i < lmv->desc.ld_tgt_count);
549 rc = md_getattr(lmv->tgts[i].ltd_exp, fid, valid,
554 obj = lmv_grab_obj(obd, fid);
556 CDEBUG(D_OTHER, "GETATTR for %lu/%lu/%lu %s\n",
557 (unsigned long)fid->mds, (unsigned long)fid->id,
558 (unsigned long)fid->generation, obj ? "(splitted)" : "");
561 /* we have to loop over dirobjs here and gather attrs for all
563 #warning "attrs gathering here"
570 static int lmv_change_cbdata(struct obd_export *exp, struct ll_fid *fid,
571 ldlm_iterator_t it, void *data)
573 struct obd_device *obd = exp->exp_obd;
574 struct lmv_obd *lmv = &obd->u.lmv;
578 rc = lmv_check_connect(obd);
582 CDEBUG(D_OTHER, "CBDATA for %lu/%lu/%lu\n", (unsigned long)fid->mds,
583 (unsigned long)fid->id, (unsigned long)fid->generation);
585 LASSERT(fid->mds < lmv->desc.ld_tgt_count);
587 rc = md_change_cbdata(lmv->tgts[fid->mds].ltd_exp,
593 static int lmv_change_cbdata_name(struct obd_export *exp, struct ll_fid *pfid,
594 char *name, int len, struct ll_fid *cfid,
595 ldlm_iterator_t it, void *data)
597 struct obd_device *obd = exp->exp_obd;
598 struct lmv_obd *lmv = &obd->u.lmv;
603 rc = lmv_check_connect(obd);
607 LASSERT(pfid->mds < lmv->desc.ld_tgt_count);
608 LASSERT(cfid->mds < lmv->desc.ld_tgt_count);
610 CDEBUG(D_OTHER, "CBDATA for %lu/%lu/%lu:%*s -> %lu/%lu/%lu\n",
611 (unsigned long)pfid->mds, (unsigned long)pfid->id,
612 (unsigned long)pfid->generation, len, name,
613 (unsigned long)cfid->mds, (unsigned long)cfid->id,
614 (unsigned long)cfid->generation);
616 /* this is default mds for directory name belongs to. */
618 obj = lmv_grab_obj(obd, pfid);
620 /* directory is splitted. look for right mds for this name. */
621 mds = raw_name2idx(obj->objcount, name, len);
624 rc = md_change_cbdata(lmv->tgts[mds].ltd_exp, cfid, it, data);
628 static int lmv_valid_attrs(struct obd_export *exp, struct ll_fid *fid)
630 struct obd_device *obd = exp->exp_obd;
631 struct lmv_obd *lmv = &obd->u.lmv;
634 rc = lmv_check_connect(obd);
637 CDEBUG(D_OTHER, "validate %lu/%lu/%lu\n", (unsigned long) fid->mds,
638 (unsigned long) fid->id, (unsigned long) fid->generation);
639 LASSERT(fid->mds < lmv->desc.ld_tgt_count);
640 rc = md_valid_attrs(lmv->tgts[fid->mds].ltd_exp, fid);
644 int lmv_close(struct obd_export *exp, struct obdo *obdo,
645 struct obd_client_handle *och,
646 struct ptlrpc_request **request)
648 struct obd_device *obd = exp->exp_obd;
649 struct lmv_obd *lmv = &obd->u.lmv;
650 int rc, i = obdo->o_mds;
652 rc = lmv_check_connect(obd);
655 LASSERT(i < lmv->desc.ld_tgt_count);
656 CDEBUG(D_OTHER, "CLOSE %lu/%lu/%lu\n", (unsigned long) obdo->o_mds,
657 (unsigned long) obdo->o_id, (unsigned long) obdo->o_generation);
658 rc = md_close(lmv->tgts[i].ltd_exp, obdo, och, request);
662 int lmv_get_mea_and_update_object(struct obd_export *exp, struct ll_fid *fid)
664 struct obd_device *obd = exp->exp_obd;
665 struct lmv_obd *lmv = &obd->u.lmv;
666 struct ptlrpc_request *req = NULL;
673 mealen = MEA_SIZE_LMV(lmv);
675 valid = OBD_MD_FLEASIZE | OBD_MD_FLDIREA;
677 /* time to update mea of parent fid */
678 rc = md_getattr(lmv->tgts[fid->mds].ltd_exp, fid,
679 valid, mealen, &req);
681 CERROR("md_getattr() failed, error %d\n", rc);
685 rc = mdc_req2lustre_md(exp, req, 0, NULL, &md);
687 CERROR("mdc_req2lustre_md() failed, error %d\n", rc);
692 GOTO(cleanup, rc = -ENODATA);
694 obj = lmv_create_obj(exp, fid, md.mea);
698 obd_free_memmd(exp, (struct lov_stripe_md **)&md.mea);
702 ptlrpc_req_finished(req);
706 int lmv_create(struct obd_export *exp, struct mdc_op_data *op_data,
707 const void *data, int datalen, int mode, __u32 uid,
708 __u32 gid, __u64 rdev, struct ptlrpc_request **request)
710 struct obd_device *obd = exp->exp_obd;
711 struct lmv_obd *lmv = &obd->u.lmv;
712 struct mds_body *mds_body;
717 rc = lmv_check_connect(obd);
721 if (!lmv->desc.ld_active_tgt_count)
724 obj = lmv_grab_obj(obd, &op_data->fid1);
726 mds = raw_name2idx(obj->objcount, op_data->name,
728 op_data->fid1 = obj->objs[mds].fid;
732 CDEBUG(D_OTHER, "CREATE '%*s' on %lu/%lu/%lu\n",
733 op_data->namelen, op_data->name,
734 (unsigned long)op_data->fid1.mds,
735 (unsigned long)op_data->fid1.id,
736 (unsigned long)op_data->fid1.generation);
738 rc = md_create(lmv->tgts[op_data->fid1.mds].ltd_exp, op_data, data,
739 datalen, mode, uid, gid, rdev, request);
742 if (*request == NULL)
745 mds_body = lustre_msg_buf((*request)->rq_repmsg, 0,
747 LASSERT(mds_body != NULL);
749 CDEBUG(D_OTHER, "created. id = %lu, generation = %lu, mds = %d\n",
750 (unsigned long)mds_body->fid1.id,
751 (unsigned long)mds_body->fid1.generation,
754 LASSERT(mds_body->valid & OBD_MD_MDS ||
755 mds_body->mds == op_data->fid1.mds);
756 } else if (rc == -ERESTART) {
757 /* directory got splitted. time to update local object and
758 * repeat the request with proper MDS */
759 rc = lmv_get_mea_and_update_object(exp, &op_data->fid1);
761 ptlrpc_req_finished(*request);
768 int lmv_done_writing(struct obd_export *exp, struct obdo *obdo)
770 struct obd_device *obd = exp->exp_obd;
771 struct lmv_obd *lmv = &obd->u.lmv;
774 rc = lmv_check_connect(obd);
778 /* FIXME: choose right MDC here */
779 CWARN("this method isn't implemented yet\n");
780 rc = md_done_writing(lmv->tgts[0].ltd_exp, obdo);
784 int lmv_enqueue_slaves(struct obd_export *exp, int locktype,
785 struct lookup_intent *it, int lockmode,
786 struct mdc_op_data *data, struct lustre_handle *lockh,
787 void *lmm, int lmmsize, ldlm_completion_callback cb_completion,
788 ldlm_blocking_callback cb_blocking, void *cb_data)
790 struct obd_device *obd = exp->exp_obd;
791 struct lmv_obd *lmv = &obd->u.lmv;
792 struct mea *mea = data->mea1;
793 struct mdc_op_data data2;
797 LASSERT(mea != NULL);
798 for (i = 0; i < mea->mea_count; i++) {
799 if (lmv->tgts[i].ltd_exp == NULL)
802 memset(&data2, 0, sizeof(data2));
803 data2.fid1 = mea->mea_fids[i];
804 mds = data2.fid1.mds;
806 rc = md_enqueue(lmv->tgts[mds].ltd_exp, locktype, it, lockmode,
807 &data2, lockh + i, lmm, lmmsize, cb_completion,
808 cb_blocking, cb_data);
810 CDEBUG(D_OTHER, "take lock on slave %lu/%lu/%lu -> %d/%d\n",
811 (unsigned long)mea->mea_fids[i].mds,
812 (unsigned long)mea->mea_fids[i].id,
813 (unsigned long)mea->mea_fids[i].generation,
814 rc, it->d.lustre.it_status);
817 if (it->d.lustre.it_data) {
818 struct ptlrpc_request *req;
819 req = (struct ptlrpc_request *) it->d.lustre.it_data;
820 ptlrpc_req_finished(req);
823 if (it->d.lustre.it_status)
824 GOTO(cleanup, rc = it->d.lustre.it_status);
829 /* drop all taken locks */
832 ldlm_lock_decref(lockh + i, lockmode);
838 int lmv_enqueue(struct obd_export *exp, int lock_type,
839 struct lookup_intent *it, int lock_mode,
840 struct mdc_op_data *data, struct lustre_handle *lockh,
841 void *lmm, int lmmsize, ldlm_completion_callback cb_completion,
842 ldlm_blocking_callback cb_blocking, void *cb_data)
844 struct obd_device *obd = exp->exp_obd;
845 struct lmv_obd *lmv = &obd->u.lmv;
850 rc = lmv_check_connect(obd);
854 if (it->it_op == IT_UNLINK) {
855 rc = lmv_enqueue_slaves(exp, lock_type, it, lock_mode,
856 data, lockh, lmm, lmmsize,
857 cb_completion, cb_blocking, cb_data);
862 obj = lmv_grab_obj(obd, &data->fid1);
864 /* directory is splitted. look for right mds for this
866 mds = raw_name2idx(obj->objcount, (char *)data->name,
868 data->fid1 = obj->objs[mds].fid;
872 CDEBUG(D_OTHER, "ENQUEUE '%s' on %lu/%lu\n", LL_IT2STR(it),
873 (unsigned long)data->fid1.id, (unsigned long)data->fid1.generation);
875 rc = md_enqueue(lmv->tgts[data->fid1.mds].ltd_exp, lock_type, it,
876 lock_mode, data, lockh, lmm, lmmsize, cb_completion,
877 cb_blocking, cb_data);
882 int lmv_getattr_name(struct obd_export *exp, struct ll_fid *fid,
883 char *filename, int namelen, unsigned long valid,
884 unsigned int ea_size, struct ptlrpc_request **request)
886 struct obd_device *obd = exp->exp_obd;
887 struct lmv_obd *lmv = &obd->u.lmv;
888 struct ll_fid rfid = *fid;
889 int rc, mds = fid->mds;
890 struct mds_body *body;
893 rc = lmv_check_connect(obd);
897 obj = lmv_grab_obj(obd, fid);
899 /* directory is splitted. look for right mds for this name */
900 mds = raw_name2idx(obj->objcount, filename, namelen - 1);
901 rfid = obj->objs[mds].fid;
905 CDEBUG(D_OTHER, "getattr_name for %*s on %lu/%lu/%lu -> %lu/%lu/%lu\n",
906 namelen, filename, (unsigned long)fid->mds,
907 (unsigned long)fid->id, (unsigned long)fid->generation,
908 (unsigned long)rfid.mds, (unsigned long)rfid.id,
909 (unsigned long)rfid.generation);
911 rc = md_getattr_name(lmv->tgts[mds].ltd_exp, &rfid, filename,
912 namelen, valid, ea_size, request);
914 /* this could be cross-node reference. in this case all we have
915 * right now is mds/ino/generation triple. we'd like to find
916 * other attributes */
917 body = lustre_msg_buf((*request)->rq_repmsg, 0, sizeof(*body));
918 LASSERT(body != NULL);
919 if (body->valid & OBD_MD_MDS) {
920 struct ptlrpc_request *req = NULL;
922 CDEBUG(D_OTHER, "request attrs for %lu/%lu/%lu\n",
923 (unsigned long) rfid.mds,
924 (unsigned long) rfid.id,
925 (unsigned long) rfid.generation);
926 rc = md_getattr_name(lmv->tgts[rfid.mds].ltd_exp, &rfid,
927 NULL, 1, valid, ea_size, &req);
928 ptlrpc_req_finished(*request);
931 } else if (rc == -ERESTART) {
932 /* directory got splitted. time to update local object and
933 * repeat the request with proper MDS */
934 rc = lmv_get_mea_and_update_object(exp, &rfid);
936 ptlrpc_req_finished(*request);
945 * llite passes fid of an target inode in data->fid1 and fid of directory in
948 int lmv_link(struct obd_export *exp, struct mdc_op_data *data,
949 struct ptlrpc_request **request)
951 struct obd_device *obd = exp->exp_obd;
952 struct lmv_obd *lmv = &obd->u.lmv;
957 rc = lmv_check_connect(obd);
961 if (data->namelen != 0) {
962 /* usual link request */
963 obj = lmv_grab_obj(obd, &data->fid1);
965 rc = raw_name2idx(obj->objcount, data->name,
967 data->fid1 = obj->objs[rc].fid;
971 CDEBUG(D_OTHER,"link %lu/%lu/%lu:%*s to %lu/%lu/%lu mds %lu\n",
972 (unsigned long)data->fid2.mds,
973 (unsigned long)data->fid2.id,
974 (unsigned long)data->fid2.generation,
975 data->namelen, data->name,
976 (unsigned long)data->fid1.mds,
977 (unsigned long)data->fid1.id,
978 (unsigned long)data->fid1.generation,
979 (unsigned long)data->fid1.mds);
981 /* request from MDS to acquire i_links for inode by fid1 */
982 CDEBUG(D_OTHER, "inc i_nlinks for %lu/%lu/%lu\n",
983 (unsigned long)data->fid1.mds,
984 (unsigned long)data->fid1.id,
985 (unsigned long)data->fid1.generation);
988 rc = md_link(lmv->tgts[data->fid1.mds].ltd_exp, data, request);
992 int lmv_rename(struct obd_export *exp, struct mdc_op_data *data,
993 const char *old, int oldlen, const char *new, int newlen,
994 struct ptlrpc_request **request)
996 struct obd_device *obd = exp->exp_obd;
997 struct lmv_obd *lmv = &obd->u.lmv;
1002 CDEBUG(D_OTHER, "rename %*s in %lu/%lu/%lu to %*s in %lu/%lu/%lu\n",
1003 oldlen, old, (unsigned long)data->fid1.mds,
1004 (unsigned long)data->fid1.id,
1005 (unsigned long)data->fid1.generation,
1006 newlen, new, (unsigned long) data->fid2.mds,
1007 (unsigned long) data->fid2.id,
1008 (unsigned long) data->fid2.generation);
1010 if (!fid_equal(&data->fid1, &data->fid2))
1011 CWARN("cross-node rename %lu/%lu/%lu:%*s to %lu/%lu/%lu:%*s\n",
1012 (unsigned long)data->fid1.mds,
1013 (unsigned long)data->fid1.id,
1014 (unsigned long)data->fid1.generation, oldlen, old,
1015 (unsigned long)data->fid2.mds,
1016 (unsigned long)data->fid2.id,
1017 (unsigned long)data->fid2.generation, newlen, new);
1019 rc = lmv_check_connect(obd);
1024 /* MDS with old dir entry is asking another MDS to create name
1027 "create %*s(%d/%d) in %lu/%lu/%lu pointing to %lu/%lu/%lu\n",
1028 newlen, new, oldlen, newlen,
1029 (unsigned long)data->fid2.mds,
1030 (unsigned long)data->fid2.id,
1031 (unsigned long)data->fid2.generation,
1032 (unsigned long)data->fid1.mds,
1033 (unsigned long)data->fid1.id,
1034 (unsigned long)data->fid1.generation);
1035 mds = data->fid2.mds;
1039 obj = lmv_grab_obj(obd, &data->fid1);
1041 /* directory is already splitted, so we have to forward request
1042 * to the right MDS */
1043 mds = raw_name2idx(obj->objcount, (char *)old, oldlen);
1044 data->fid1 = obj->objs[mds].fid;
1045 CDEBUG(D_OTHER, "forward to MDS #%u (%lu/%lu/%lu)\n", mds,
1046 (unsigned long)obj->objs[mds].fid.mds,
1047 (unsigned long)obj->objs[mds].fid.id,
1048 (unsigned long)obj->objs[mds].fid.generation);
1052 obj = lmv_grab_obj(obd, &data->fid2);
1054 /* directory is already splitted, so we have to forward request
1055 * to the right MDS */
1056 mds = raw_name2idx(obj->objcount, (char *)new, newlen);
1057 data->fid2 = obj->objs[mds].fid;
1058 CDEBUG(D_OTHER, "forward to MDS #%u (%lu/%lu/%lu)\n", mds,
1059 (unsigned long)obj->objs[mds].fid.mds,
1060 (unsigned long)obj->objs[mds].fid.id,
1061 (unsigned long)obj->objs[mds].fid.generation);
1065 mds = data->fid1.mds;
1068 rc = md_rename(lmv->tgts[mds].ltd_exp, data, old, oldlen,
1069 new, newlen, request);
1073 int lmv_setattr(struct obd_export *exp, struct mdc_op_data *data,
1074 struct iattr *iattr, void *ea, int ealen, void *ea2,
1075 int ea2len, struct ptlrpc_request **request)
1077 struct obd_device *obd = exp->exp_obd;
1078 struct lmv_obd *lmv = &obd->u.lmv;
1079 int rc = 0, i = data->fid1.mds;
1080 struct ptlrpc_request *req;
1081 struct mds_body *mds_body;
1082 struct lmv_obj *obj;
1085 rc = lmv_check_connect(obd);
1089 obj = lmv_grab_obj(obd, &data->fid1);
1091 CDEBUG(D_OTHER, "SETATTR for %lu/%lu/%lu, valid 0x%x%s\n",
1092 (unsigned long)data->fid1.mds, (unsigned long)data->fid1.id,
1093 (unsigned long)data->fid1.generation, iattr->ia_valid,
1094 obj ? ", splitted" : "");
1097 for (i = 0; i < obj->objcount; i++) {
1098 data->fid1 = obj->objs[i].fid;
1100 rc = md_setattr(lmv->tgts[i].ltd_exp, data, iattr,
1101 ea, ealen, ea2, ea2len, &req);
1104 ptlrpc_req_finished(req);
1108 if (fid_equal(&obj->fid, &obj->objs[i].fid)) {
1109 /* this is master object and this request should
1110 * be returned back to llite */
1113 ptlrpc_req_finished(req);
1118 LASSERT(i < lmv->desc.ld_tgt_count);
1119 rc = md_setattr(lmv->tgts[i].ltd_exp, data, iattr, ea, ealen,
1120 ea2, ea2len, request);
1122 mds_body = lustre_msg_buf((*request)->rq_repmsg, 0,
1124 LASSERT(mds_body != NULL);
1125 LASSERT(mds_body->mds == i);
1131 int lmv_sync(struct obd_export *exp, struct ll_fid *fid,
1132 struct ptlrpc_request **request)
1134 struct obd_device *obd = exp->exp_obd;
1135 struct lmv_obd *lmv = &obd->u.lmv;
1139 rc = lmv_check_connect(obd);
1143 rc = md_sync(lmv->tgts[0].ltd_exp, fid, request);
1147 int lmv_dirobj_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
1148 void *data, int flag)
1150 struct lustre_handle lockh;
1151 struct lmv_obj *obj;
1156 case LDLM_CB_BLOCKING:
1157 ldlm_lock2handle(lock, &lockh);
1158 rc = ldlm_cli_cancel(&lockh);
1160 CDEBUG(D_INODE, "ldlm_cli_cancel: %d\n", rc);
1164 case LDLM_CB_CANCELING:
1165 /* time to drop cached attrs for dirobj */
1166 obj = lock->l_ast_data;
1168 CDEBUG(D_OTHER, "cancel %s on %lu/%lu, master %lu/%lu/%lu\n",
1169 lock->l_resource->lr_name.name[3] == 1 ? "LOOKUP" : "UPDATE",
1170 (unsigned long)lock->l_resource->lr_name.name[0],
1171 (unsigned long)lock->l_resource->lr_name.name[1],
1172 (unsigned long)obj->fid.mds, (unsigned long)obj->fid.id,
1173 (unsigned long)obj->fid.generation);
1183 void lmv_remove_dots(struct page *page)
1185 char *kaddr = page_address(page);
1186 unsigned limit = PAGE_CACHE_SIZE;
1187 unsigned offs, rec_len;
1188 struct ext2_dir_entry_2 *p;
1190 for (offs = 0; offs <= limit - EXT2_DIR_REC_LEN(1); offs += rec_len) {
1191 p = (struct ext2_dir_entry_2 *)(kaddr + offs);
1192 rec_len = le16_to_cpu(p->rec_len);
1194 if ((p->name_len == 1 && p->name[0] == '.') ||
1195 (p->name_len == 2 && p->name[0] == '.' && p->name[1] == '.'))
1200 int lmv_readpage(struct obd_export *exp, struct ll_fid *mdc_fid,
1201 __u64 offset, struct page *page,
1202 struct ptlrpc_request **request)
1204 struct obd_device *obd = exp->exp_obd;
1205 struct lmv_obd *lmv = &obd->u.lmv;
1206 struct ll_fid rfid = *mdc_fid;
1207 struct lmv_obj *obj;
1211 rc = lmv_check_connect(obd);
1215 LASSERT(mdc_fid->mds < lmv->desc.ld_tgt_count);
1216 CDEBUG(D_OTHER, "READPAGE at %llu from %lu/%lu/%lu\n",
1217 offset, (unsigned long) rfid.mds,
1218 (unsigned long) rfid.id,
1219 (unsigned long) rfid.generation);
1221 obj = lmv_grab_obj(obd, mdc_fid);
1225 /* find dirobj containing page with requested offset. */
1226 for (i = 0; i < obj->objcount; i++) {
1227 if (offset < obj->objs[i].size)
1229 offset -= obj->objs[i].size;
1231 rfid = obj->objs[i].fid;
1233 lmv_unlock_obj(obj);
1236 CDEBUG(D_OTHER, "forward to %lu/%lu/%lu with offset %lu\n",
1237 (unsigned long)rfid.mds, (unsigned long)rfid.id,
1238 (unsigned long)rfid.generation, (unsigned long)offset);
1240 rc = md_readpage(lmv->tgts[rfid.mds].ltd_exp, &rfid, offset,
1243 if (rc == 0 && !fid_equal(&rfid, mdc_fid))
1244 /* this page isn't from master object. To avoid "." and ".."
1245 * duplication in directory, we have to remove them from all
1247 lmv_remove_dots(page);
1252 int lmv_unlink_slaves(struct obd_export *exp, struct mdc_op_data *data,
1253 struct ptlrpc_request **req)
1255 struct obd_device *obd = exp->exp_obd;
1256 struct lmv_obd *lmv = &obd->u.lmv;
1257 struct mea *mea = data->mea1;
1258 struct mdc_op_data data2;
1262 LASSERT(mea != NULL);
1263 for (i = 0; i < mea->mea_count; i++) {
1264 if (lmv->tgts[i].ltd_exp == NULL)
1267 memset(&data2, 0, sizeof(data2));
1268 data2.fid1 = mea->mea_fids[i];
1269 data2.create_mode = MDS_MODE_DONT_LOCK | S_IFDIR;
1270 mds = data2.fid1.mds;
1271 rc = md_unlink(lmv->tgts[mds].ltd_exp, &data2, req);
1272 CDEBUG(D_OTHER, "unlink slave %lu/%lu/%lu -> %d\n",
1273 (unsigned long) mea->mea_fids[i].mds,
1274 (unsigned long) mea->mea_fids[i].id,
1275 (unsigned long) mea->mea_fids[i].generation, rc);
1277 ptlrpc_req_finished(*req);
1286 int lmv_delete_object(struct obd_export *exp, struct ll_fid *fid)
1290 if (!lmv_delete_obj(exp, fid)) {
1291 CDEBUG(D_OTHER, "Object %lu/%lu/%lu is not found.\n",
1292 (unsigned long)fid->mds, (unsigned long)fid->id,
1293 (unsigned long)fid->generation);
1299 int lmv_unlink(struct obd_export *exp, struct mdc_op_data *data,
1300 struct ptlrpc_request **request)
1302 struct obd_device *obd = exp->exp_obd;
1303 struct lmv_obd *lmv = &obd->u.lmv;
1307 rc = lmv_check_connect(obd);
1311 if (data->namelen == 0 && data->mea1 != NULL) {
1312 /* mds asks to remove slave objects */
1313 rc = lmv_unlink_slaves(exp, data, request);
1315 } else if (data->namelen != 0) {
1316 struct lmv_obj *obj;
1318 obj = lmv_grab_obj(obd, &data->fid1);
1320 i = raw_name2idx(obj->objcount, data->name,
1322 data->fid1 = obj->objs[i].fid;
1325 CDEBUG(D_OTHER, "unlink '%*s' in %lu/%lu/%lu -> %u\n",
1326 data->namelen, data->name,
1327 (unsigned long) data->fid1.mds,
1328 (unsigned long) data->fid1.id,
1329 (unsigned long) data->fid1.generation, i);
1331 CDEBUG(D_OTHER, "drop i_nlink on %lu/%lu/%lu\n",
1332 (unsigned long) data->fid1.mds,
1333 (unsigned long) data->fid1.id,
1334 (unsigned long) data->fid1.generation);
1336 rc = md_unlink(lmv->tgts[data->fid1.mds].ltd_exp, data, request);
1340 struct obd_device *lmv_get_real_obd(struct obd_export *exp,
1341 char *name, int len)
1343 struct obd_device *obd = exp->exp_obd;
1344 struct lmv_obd *lmv = &obd->u.lmv;
1348 rc = lmv_check_connect(obd);
1350 RETURN(ERR_PTR(rc));
1351 obd = lmv->tgts[0].ltd_exp->exp_obd;
1356 int lmv_init_ea_size(struct obd_export *exp, int easize, int cookiesize)
1358 struct obd_device *obd = exp->exp_obd;
1359 struct lmv_obd *lmv = &obd->u.lmv;
1360 int i, rc = 0, change = 0;
1363 if (lmv->max_easize < easize) {
1364 lmv->max_easize = easize;
1367 if (lmv->max_cookiesize < cookiesize) {
1368 lmv->max_cookiesize = cookiesize;
1374 if (lmv->connected == 0)
1377 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
1378 rc = obd_init_ea_size(lmv->tgts[i].ltd_exp, easize, cookiesize);
1380 CERROR("obd_init_ea_size() failed on MDT target %d, "
1381 "error %d.\n", i, rc);
1388 int lmv_obd_create_single(struct obd_export *exp, struct obdo *oa,
1389 struct lov_stripe_md **ea, struct obd_trans_info *oti)
1391 struct obd_device *obd = exp->exp_obd;
1392 struct lmv_obd *lmv = &obd->u.lmv;
1393 struct lov_stripe_md obj_md;
1394 struct lov_stripe_md *obj_mdp = &obj_md;
1398 rc = lmv_check_connect(obd);
1402 LASSERT(ea == NULL);
1403 LASSERT(oa->o_mds < lmv->desc.ld_tgt_count);
1405 rc = obd_create(lmv->tgts[oa->o_mds].ltd_exp, oa, &obj_mdp, oti);
1411 * to be called from MDS only
1413 int lmv_obd_create(struct obd_export *exp, struct obdo *oa,
1414 struct lov_stripe_md **ea, struct obd_trans_info *oti)
1416 struct obd_device *obd = exp->exp_obd;
1417 struct lmv_obd *lmv = &obd->u.lmv;
1423 rc = lmv_check_connect(obd);
1427 LASSERT(oa != NULL);
1430 rc = lmv_obd_create_single(exp, oa, NULL, oti);
1435 rc = obd_alloc_diskmd(exp, (struct lov_mds_md **)ea);
1437 CERROR("obd_alloc_diskmd() failed, error %d\n",
1448 mfid.generation = oa->o_generation;
1450 mea = (struct mea *)*ea;
1451 if (!mea->mea_count || mea->mea_count > lmv->desc.ld_tgt_count)
1452 mea->mea_count = lmv->desc.ld_tgt_count;
1454 mea->mea_master = -1;
1456 for (i = 0, c = 0; c < mea->mea_count &&
1457 i < lmv->desc.ld_tgt_count; i++) {
1458 struct lov_stripe_md obj_md;
1459 struct lov_stripe_md *obj_mdp = &obj_md;
1461 if (lmv->tgts[i].ltd_exp == NULL) {
1462 /* this is master MDS */
1463 mea->mea_fids[c].id = mfid.id;
1464 mea->mea_fids[c].generation = mfid.generation;
1465 mea->mea_fids[c].mds = i;
1466 mea->mea_master = i;
1471 /* "master" MDS should always be part of stripped dir, so scan
1473 if (mea->mea_master == -1 && c == mea->mea_count - 1)
1476 oa->o_valid = OBD_MD_FLGENER | OBD_MD_FLTYPE | OBD_MD_FLMODE
1477 | OBD_MD_FLUID | OBD_MD_FLGID | OBD_MD_FLID;
1479 rc = obd_create(lmv->tgts[c].ltd_exp, oa, &obj_mdp, oti);
1481 CERROR("obd_create() failed on MDT target %d, "
1482 "error %d\n", c, rc);
1486 mea->mea_fids[c].id = oa->o_id;
1487 mea->mea_fids[c].generation = oa->o_generation;
1488 mea->mea_fids[c].mds = i;
1490 CDEBUG(D_OTHER, "dirobj at mds %d: "LPU64"/%u\n",
1491 i, oa->o_id, oa->o_generation);
1493 LASSERT(c == mea->mea_count);
1494 CDEBUG(D_OTHER, "%d dirobjects created\n", (int) mea->mea_count);
1499 static int lmv_get_info(struct obd_export *exp, __u32 keylen,
1500 void *key, __u32 *vallen, void *val)
1502 struct obd_device *obd;
1503 struct lmv_obd *lmv;
1506 obd = class_exp2obd(exp);
1508 CDEBUG(D_IOCTL, "invalid client cookie "LPX64"\n",
1509 exp->exp_handle.h_cookie);
1514 if (keylen == 6 && memcmp(key, "mdsize", 6) == 0) {
1515 __u32 *mdsize = val;
1516 *vallen = sizeof(__u32);
1517 *mdsize = sizeof(struct ll_fid) * lmv->desc.ld_tgt_count
1518 + sizeof(struct mea);
1520 } else if (keylen == 6 && memcmp(key, "mdsnum", 6) == 0) {
1521 struct obd_uuid *cluuid = &lmv->cluuid;
1522 struct lmv_tgt_desc *tgts;
1523 __u32 *mdsnum = val;
1526 for (i = 0, tgts = lmv->tgts; i < lmv->desc.ld_tgt_count; i++, tgts++) {
1527 if (obd_uuid_equals(&tgts->uuid, cluuid)) {
1528 *vallen = sizeof(__u32);
1536 CDEBUG(D_IOCTL, "invalid key\n");
1540 int lmv_set_info(struct obd_export *exp, obd_count keylen,
1541 void *key, obd_count vallen, void *val)
1543 struct obd_device *obd;
1544 struct lmv_obd *lmv;
1547 obd = class_exp2obd(exp);
1549 CDEBUG(D_IOCTL, "invalid client cookie "LPX64"\n",
1550 exp->exp_handle.h_cookie);
1555 if (keylen >= strlen("client") && strcmp(key, "client") == 0) {
1556 struct lmv_tgt_desc *tgts;
1559 rc = lmv_check_connect(obd);
1563 for (i = 0, tgts = lmv->tgts;
1564 i < lmv->desc.ld_tgt_count; i++, tgts++) {
1565 rc = obd_set_info(tgts->ltd_exp, keylen, key, vallen, val);
1570 } else if (keylen >= strlen("inter_mds") && strcmp(key, "inter_mds") == 0) {
1571 lmv->server_timeout = 1;
1572 lmv_set_timeouts(obd);
1579 int lmv_packmd(struct obd_export *exp, struct lov_mds_md **lmmp,
1580 struct lov_stripe_md *lsm)
1582 struct obd_device *obd = class_exp2obd(exp);
1583 struct lmv_obd *lmv = &obd->u.lmv;
1587 mea_size = sizeof(struct ll_fid) *
1588 lmv->desc.ld_tgt_count + sizeof(struct mea);
1592 if (*lmmp && !lsm) {
1593 OBD_FREE(*lmmp, mea_size);
1598 if (*lmmp == NULL) {
1599 OBD_ALLOC(*lmmp, mea_size);
1607 #warning "MEA packing/convertation must be here! -bzzz"
1608 memcpy(*lmmp, lsm, mea_size);
1612 int lmv_unpackmd(struct obd_export *exp, struct lov_stripe_md **mem_tgt,
1613 struct lov_mds_md *disk_src, int mdsize)
1615 struct obd_device *obd = class_exp2obd(exp);
1616 struct lmv_obd *lmv = &obd->u.lmv;
1617 struct mea **tmea = (struct mea **) mem_tgt;
1618 struct mea *mea = (void *) disk_src;
1622 mea_size = sizeof(struct ll_fid) *
1623 lmv->desc.ld_tgt_count + sizeof(struct mea);
1624 if (mem_tgt == NULL)
1627 if (*mem_tgt != NULL && disk_src == NULL) {
1628 OBD_FREE(*tmea, mea_size);
1632 LASSERT(mea_size == mdsize);
1634 OBD_ALLOC(*tmea, mea_size);
1641 #warning "MEA unpacking/convertation must be here! -bzzz"
1642 memcpy(*tmea, mea, mdsize);
1646 int lmv_brw(int rw, struct obd_export *exp, struct obdo *oa,
1647 struct lov_stripe_md *ea, obd_count oa_bufs,
1648 struct brw_page *pgarr, struct obd_trans_info *oti)
1650 struct obd_device *obd = exp->exp_obd;
1651 struct lmv_obd *lmv = &obd->u.lmv;
1652 struct mea *mea = (struct mea *) ea;
1655 LASSERT(oa != NULL);
1656 LASSERT(ea != NULL);
1657 LASSERT(pgarr != NULL);
1658 LASSERT(oa->o_mds < lmv->desc.ld_tgt_count);
1660 oa->o_gr = mea->mea_fids[oa->o_mds].generation;
1661 oa->o_id = mea->mea_fids[oa->o_mds].id;
1662 oa->o_valid = OBD_MD_FLID | OBD_MD_FLGROUP;
1663 err = obd_brw(rw, lmv->tgts[oa->o_mds].ltd_exp, oa,
1664 NULL, oa_bufs, pgarr, oti);
1668 struct obd_ops lmv_obd_ops = {
1669 .o_owner = THIS_MODULE,
1670 .o_attach = lmv_attach,
1671 .o_detach = lmv_detach,
1672 .o_setup = lmv_setup,
1673 .o_cleanup = lmv_cleanup,
1674 .o_connect = lmv_connect,
1675 .o_disconnect = lmv_disconnect,
1676 .o_statfs = lmv_statfs,
1677 .o_get_info = lmv_get_info,
1678 .o_set_info = lmv_set_info,
1679 .o_create = lmv_obd_create,
1680 .o_packmd = lmv_packmd,
1681 .o_unpackmd = lmv_unpackmd,
1683 .o_init_ea_size = lmv_init_ea_size,
1684 .o_notify = lmv_notify,
1685 .o_iocontrol = lmv_iocontrol,
1688 struct md_ops lmv_md_ops = {
1689 .m_getstatus = lmv_getstatus,
1690 .m_getattr = lmv_getattr,
1691 .m_change_cbdata = lmv_change_cbdata,
1692 .m_change_cbdata_name = lmv_change_cbdata_name,
1693 .m_close = lmv_close,
1694 .m_create = lmv_create,
1695 .m_done_writing = lmv_done_writing,
1696 .m_enqueue = lmv_enqueue,
1697 .m_getattr_name = lmv_getattr_name,
1698 .m_intent_lock = lmv_intent_lock,
1700 .m_rename = lmv_rename,
1701 .m_setattr = lmv_setattr,
1703 .m_readpage = lmv_readpage,
1704 .m_unlink = lmv_unlink,
1705 .m_get_real_obd = lmv_get_real_obd,
1706 .m_valid_attrs = lmv_valid_attrs,
1707 .m_delete_object = lmv_delete_object,
1710 int __init lmv_init(void)
1712 struct lprocfs_static_vars lvars;
1715 lprocfs_init_vars(lmv, &lvars);
1716 rc = class_register_type(&lmv_obd_ops, &lmv_md_ops,
1717 lvars.module_vars, OBD_LMV_DEVICENAME);
1722 static void lmv_exit(void)
1724 class_unregister_type(OBD_LMV_DEVICENAME);
1727 MODULE_AUTHOR("Cluster File Systems, Inc. <info@clusterfs.com>");
1728 MODULE_DESCRIPTION("Lustre Logical Metadata Volume OBD driver");
1729 MODULE_LICENSE("GPL");
1731 module_init(lmv_init);
1732 module_exit(lmv_exit);