4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
21 * CA 95054 USA or visit www.sun.com if you need additional information or
27 * Copyright (c) 2004, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
30 * Copyright (c) 2011, 2013, Intel Corporation.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
37 #define DEBUG_SUBSYSTEM S_LMV
39 #include <linux/slab.h>
40 #include <linux/module.h>
41 #include <linux/init.h>
42 #include <linux/slab.h>
43 #include <linux/pagemap.h>
45 #include <asm/div64.h>
46 #include <linux/seq_file.h>
47 #include <linux/namei.h>
49 #include <liblustre.h>
52 #include <lustre/lustre_idl.h>
53 #include <obd_support.h>
54 #include <lustre_lib.h>
55 #include <lustre_net.h>
56 #include <obd_class.h>
57 #include <lprocfs_status.h>
58 #include <lustre_lite.h>
59 #include <lustre_fid.h>
60 #include "lmv_internal.h"
62 static void lmv_activate_target(struct lmv_obd *lmv,
63 struct lmv_tgt_desc *tgt,
66 if (tgt->ltd_active == activate)
69 tgt->ltd_active = activate;
70 lmv->desc.ld_active_tgt_count += (activate ? 1 : -1);
76 * -EINVAL : UUID can't be found in the LMV's target list
77 * -ENOTCONN: The UUID is found, but the target connection is bad (!)
78 * -EBADF : The UUID is found, but the OBD of the wrong type (!)
80 static int lmv_set_mdc_active(struct lmv_obd *lmv,
81 const struct obd_uuid *uuid,
84 struct lmv_tgt_desc *tgt = NULL;
85 struct obd_device *obd;
90 CDEBUG(D_INFO, "Searching in lmv %p for uuid %s (activate=%d)\n",
91 lmv, uuid->uuid, activate);
93 spin_lock(&lmv->lmv_lock);
94 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
96 if (tgt == NULL || tgt->ltd_exp == NULL)
99 CDEBUG(D_INFO, "Target idx %d is %s conn "LPX64"\n", i,
100 tgt->ltd_uuid.uuid, tgt->ltd_exp->exp_handle.h_cookie);
102 if (obd_uuid_equals(uuid, &tgt->ltd_uuid))
106 if (i == lmv->desc.ld_tgt_count)
107 GOTO(out_lmv_lock, rc = -EINVAL);
109 obd = class_exp2obd(tgt->ltd_exp);
111 GOTO(out_lmv_lock, rc = -ENOTCONN);
113 CDEBUG(D_INFO, "Found OBD %s=%s device %d (%p) type %s at LMV idx %d\n",
114 obd->obd_name, obd->obd_uuid.uuid, obd->obd_minor, obd,
115 obd->obd_type->typ_name, i);
116 LASSERT(strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) == 0);
118 if (tgt->ltd_active == activate) {
119 CDEBUG(D_INFO, "OBD %p already %sactive!\n", obd,
120 activate ? "" : "in");
121 GOTO(out_lmv_lock, rc);
124 CDEBUG(D_INFO, "Marking OBD %p %sactive\n", obd,
125 activate ? "" : "in");
126 lmv_activate_target(lmv, tgt, activate);
130 spin_unlock(&lmv->lmv_lock);
134 struct obd_uuid *lmv_get_uuid(struct obd_export *exp)
136 struct lmv_obd *lmv = &exp->exp_obd->u.lmv;
138 return obd_get_uuid(lmv->tgts[0]->ltd_exp);
141 static int lmv_notify(struct obd_device *obd, struct obd_device *watched,
142 enum obd_notify_event ev, void *data)
144 struct obd_connect_data *conn_data;
145 struct lmv_obd *lmv = &obd->u.lmv;
146 struct obd_uuid *uuid;
150 if (strcmp(watched->obd_type->typ_name, LUSTRE_MDC_NAME)) {
151 CERROR("unexpected notification of %s %s!\n",
152 watched->obd_type->typ_name,
157 uuid = &watched->u.cli.cl_target_uuid;
158 if (ev == OBD_NOTIFY_ACTIVE || ev == OBD_NOTIFY_INACTIVE) {
160 * Set MDC as active before notifying the observer, so the
161 * observer can use the MDC normally.
163 rc = lmv_set_mdc_active(lmv, uuid,
164 ev == OBD_NOTIFY_ACTIVE);
166 CERROR("%sactivation of %s failed: %d\n",
167 ev == OBD_NOTIFY_ACTIVE ? "" : "de",
171 } else if (ev == OBD_NOTIFY_OCD) {
172 conn_data = &watched->u.cli.cl_import->imp_connect_data;
174 * XXX: Make sure that ocd_connect_flags from all targets are
175 * the same. Otherwise one of MDTs runs wrong version or
176 * something like this. --umka
178 obd->obd_self_export->exp_connect_data = *conn_data;
181 else if (ev == OBD_NOTIFY_DISCON) {
183 * For disconnect event, flush fld cache for failout MDS case.
185 fld_client_flush(&lmv->lmv_fld);
189 * Pass the notification up the chain.
191 if (obd->obd_observer)
192 rc = obd_notify(obd->obd_observer, watched, ev, data);
198 * This is fake connect function. Its purpose is to initialize lmv and say
199 * caller that everything is okay. Real connection will be performed later.
201 static int lmv_connect(const struct lu_env *env,
202 struct obd_export **exp, struct obd_device *obd,
203 struct obd_uuid *cluuid, struct obd_connect_data *data,
207 struct proc_dir_entry *lmv_proc_dir;
209 struct lmv_obd *lmv = &obd->u.lmv;
210 struct lustre_handle conn = { 0 };
215 * We don't want to actually do the underlying connections more than
216 * once, so keep track.
219 if (lmv->refcount > 1) {
224 rc = class_connect(&conn, obd, cluuid);
226 CERROR("class_connection() returned %d\n", rc);
230 *exp = class_conn2export(&conn);
231 class_export_get(*exp);
235 lmv->cluuid = *cluuid;
238 lmv->conn_data = *data;
241 lmv_proc_dir = lprocfs_register("target_obds", obd->obd_proc_entry,
243 if (IS_ERR(lmv_proc_dir)) {
244 CERROR("could not register /proc/fs/lustre/%s/%s/target_obds.",
245 obd->obd_type->typ_name, obd->obd_name);
251 * All real clients should perform actual connection right away, because
252 * it is possible, that LMV will not have opportunity to connect targets
253 * and MDC stuff will be called directly, for instance while reading
254 * ../mdc/../kbytesfree procfs file, etc.
256 if (data->ocd_connect_flags & OBD_CONNECT_REAL)
257 rc = lmv_check_connect(obd);
262 lprocfs_remove(&lmv_proc_dir);
269 static void lmv_set_timeouts(struct obd_device *obd)
271 struct lmv_tgt_desc *tgt;
276 if (lmv->server_timeout == 0)
279 if (lmv->connected == 0)
282 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
284 if (tgt == NULL || tgt->ltd_exp == NULL || tgt->ltd_active == 0)
287 obd_set_info_async(NULL, tgt->ltd_exp, sizeof(KEY_INTERMDS),
288 KEY_INTERMDS, 0, NULL, NULL);
292 static int lmv_init_ea_size(struct obd_export *exp, int easize,
293 int def_easize, int cookiesize)
295 struct obd_device *obd = exp->exp_obd;
296 struct lmv_obd *lmv = &obd->u.lmv;
302 if (lmv->max_easize < easize) {
303 lmv->max_easize = easize;
306 if (lmv->max_def_easize < def_easize) {
307 lmv->max_def_easize = def_easize;
310 if (lmv->max_cookiesize < cookiesize) {
311 lmv->max_cookiesize = cookiesize;
317 if (lmv->connected == 0)
320 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
321 if (lmv->tgts[i] == NULL ||
322 lmv->tgts[i]->ltd_exp == NULL ||
323 lmv->tgts[i]->ltd_active == 0) {
324 CWARN("%s: NULL export for %d\n", obd->obd_name, i);
328 rc = md_init_ea_size(lmv->tgts[i]->ltd_exp, easize, def_easize,
331 CERROR("%s: obd_init_ea_size() failed on MDT target %d:"
332 " rc = %d.\n", obd->obd_name, i, rc);
339 #define MAX_STRING_SIZE 128
341 int lmv_connect_mdc(struct obd_device *obd, struct lmv_tgt_desc *tgt)
344 struct proc_dir_entry *lmv_proc_dir;
346 struct lmv_obd *lmv = &obd->u.lmv;
347 struct obd_uuid *cluuid = &lmv->cluuid;
348 struct obd_uuid lmv_mdc_uuid = { "LMV_MDC_UUID" };
349 struct obd_device *mdc_obd;
350 struct obd_export *mdc_exp;
351 struct lu_fld_target target;
355 mdc_obd = class_find_client_obd(&tgt->ltd_uuid, LUSTRE_MDC_NAME,
358 CERROR("target %s not attached\n", tgt->ltd_uuid.uuid);
362 CDEBUG(D_CONFIG, "connect to %s(%s) - %s, %s FOR %s\n",
363 mdc_obd->obd_name, mdc_obd->obd_uuid.uuid,
364 tgt->ltd_uuid.uuid, obd->obd_uuid.uuid,
367 if (!mdc_obd->obd_set_up) {
368 CERROR("target %s is not set up\n", tgt->ltd_uuid.uuid);
372 rc = obd_connect(NULL, &mdc_exp, mdc_obd, &lmv_mdc_uuid,
373 &lmv->conn_data, NULL);
375 CERROR("target %s connect error %d\n", tgt->ltd_uuid.uuid, rc);
380 * Init fid sequence client for this mdc and add new fld target.
382 rc = obd_fid_init(mdc_obd, mdc_exp, LUSTRE_SEQ_METADATA);
386 target.ft_srv = NULL;
387 target.ft_exp = mdc_exp;
388 target.ft_idx = tgt->ltd_idx;
390 fld_client_add_target(&lmv->lmv_fld, &target);
392 rc = obd_register_observer(mdc_obd, obd);
394 obd_disconnect(mdc_exp);
395 CERROR("target %s register_observer error %d\n",
396 tgt->ltd_uuid.uuid, rc);
400 if (obd->obd_observer) {
402 * Tell the observer about the new target.
404 rc = obd_notify(obd->obd_observer, mdc_exp->exp_obd,
406 (void *)(tgt - lmv->tgts[0]));
408 obd_disconnect(mdc_exp);
414 tgt->ltd_exp = mdc_exp;
415 lmv->desc.ld_active_tgt_count++;
417 md_init_ea_size(tgt->ltd_exp, lmv->max_easize,
418 lmv->max_def_easize, lmv->max_cookiesize);
420 CDEBUG(D_CONFIG, "Connected to %s(%s) successfully (%d)\n",
421 mdc_obd->obd_name, mdc_obd->obd_uuid.uuid,
422 cfs_atomic_read(&obd->obd_refcount));
425 lmv_proc_dir = lprocfs_srch(obd->obd_proc_entry, "target_obds");
427 struct proc_dir_entry *mdc_symlink;
429 LASSERT(mdc_obd->obd_type != NULL);
430 LASSERT(mdc_obd->obd_type->typ_name != NULL);
431 mdc_symlink = lprocfs_add_symlink(mdc_obd->obd_name,
434 mdc_obd->obd_type->typ_name,
436 if (mdc_symlink == NULL) {
437 CERROR("Could not register LMV target "
438 "/proc/fs/lustre/%s/%s/target_obds/%s.",
439 obd->obd_type->typ_name, obd->obd_name,
441 lprocfs_remove(&lmv_proc_dir);
449 static void lmv_del_target(struct lmv_obd *lmv, int index)
451 if (lmv->tgts[index] == NULL)
454 OBD_FREE_PTR(lmv->tgts[index]);
455 lmv->tgts[index] = NULL;
459 static int lmv_add_target(struct obd_device *obd, struct obd_uuid *uuidp,
460 __u32 index, int gen)
462 struct lmv_obd *lmv = &obd->u.lmv;
463 struct lmv_tgt_desc *tgt;
467 CDEBUG(D_CONFIG, "Target uuid: %s. index %d\n", uuidp->uuid, index);
471 if (lmv->desc.ld_tgt_count == 0) {
472 struct obd_device *mdc_obd;
474 mdc_obd = class_find_client_obd(uuidp, LUSTRE_MDC_NAME,
477 lmv_init_unlock(lmv);
478 CERROR("%s: Target %s not attached: rc = %d\n",
479 obd->obd_name, uuidp->uuid, -EINVAL);
484 if ((index < lmv->tgts_size) && (lmv->tgts[index] != NULL)) {
485 tgt = lmv->tgts[index];
486 CERROR("%s: UUID %s already assigned at LOV target index %d:"
487 " rc = %d\n", obd->obd_name,
488 obd_uuid2str(&tgt->ltd_uuid), index, -EEXIST);
489 lmv_init_unlock(lmv);
493 if (index >= lmv->tgts_size) {
494 /* We need to reallocate the lmv target array. */
495 struct lmv_tgt_desc **newtgts, **old = NULL;
499 while (newsize < index + 1)
500 newsize = newsize << 1;
501 OBD_ALLOC(newtgts, sizeof(*newtgts) * newsize);
502 if (newtgts == NULL) {
503 lmv_init_unlock(lmv);
507 if (lmv->tgts_size) {
508 memcpy(newtgts, lmv->tgts,
509 sizeof(*newtgts) * lmv->tgts_size);
511 oldsize = lmv->tgts_size;
515 lmv->tgts_size = newsize;
518 OBD_FREE(old, sizeof(*old) * oldsize);
520 CDEBUG(D_CONFIG, "tgts: %p size: %d\n", lmv->tgts,
526 lmv_init_unlock(lmv);
530 mutex_init(&tgt->ltd_fid_mutex);
531 tgt->ltd_idx = index;
532 tgt->ltd_uuid = *uuidp;
534 lmv->tgts[index] = tgt;
535 if (index >= lmv->desc.ld_tgt_count)
536 lmv->desc.ld_tgt_count = index + 1;
538 if (lmv->connected) {
539 rc = lmv_connect_mdc(obd, tgt);
541 spin_lock(&lmv->lmv_lock);
542 lmv->desc.ld_tgt_count--;
543 memset(tgt, 0, sizeof(*tgt));
544 spin_unlock(&lmv->lmv_lock);
546 int easize = sizeof(struct lmv_stripe_md) +
547 lmv->desc.ld_tgt_count *
548 sizeof(struct lu_fid);
549 lmv_init_ea_size(obd->obd_self_export, easize, 0, 0);
553 lmv_init_unlock(lmv);
557 int lmv_check_connect(struct obd_device *obd)
559 struct lmv_obd *lmv = &obd->u.lmv;
560 struct lmv_tgt_desc *tgt;
570 if (lmv->connected) {
571 lmv_init_unlock(lmv);
575 if (lmv->desc.ld_tgt_count == 0) {
576 lmv_init_unlock(lmv);
577 CERROR("%s: no targets configured.\n", obd->obd_name);
581 CDEBUG(D_CONFIG, "Time to connect %s to %s\n",
582 lmv->cluuid.uuid, obd->obd_name);
584 LASSERT(lmv->tgts != NULL);
586 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
590 rc = lmv_connect_mdc(obd, tgt);
595 lmv_set_timeouts(obd);
596 class_export_put(lmv->exp);
598 easize = lmv_get_easize(lmv);
599 lmv_init_ea_size(obd->obd_self_export, easize, 0, 0);
600 lmv_init_unlock(lmv);
611 --lmv->desc.ld_active_tgt_count;
612 rc2 = obd_disconnect(tgt->ltd_exp);
614 CERROR("LMV target %s disconnect on "
615 "MDC idx %d: error %d\n",
616 tgt->ltd_uuid.uuid, i, rc2);
620 class_disconnect(lmv->exp);
621 lmv_init_unlock(lmv);
625 static int lmv_disconnect_mdc(struct obd_device *obd, struct lmv_tgt_desc *tgt)
628 struct proc_dir_entry *lmv_proc_dir;
630 struct lmv_obd *lmv = &obd->u.lmv;
631 struct obd_device *mdc_obd;
635 LASSERT(tgt != NULL);
636 LASSERT(obd != NULL);
638 mdc_obd = class_exp2obd(tgt->ltd_exp);
641 mdc_obd->obd_force = obd->obd_force;
642 mdc_obd->obd_fail = obd->obd_fail;
643 mdc_obd->obd_no_recov = obd->obd_no_recov;
647 lmv_proc_dir = lprocfs_srch(obd->obd_proc_entry, "target_obds");
649 struct proc_dir_entry *mdc_symlink;
651 mdc_symlink = lprocfs_srch(lmv_proc_dir, mdc_obd->obd_name);
653 lprocfs_remove(&mdc_symlink);
655 CERROR("/proc/fs/lustre/%s/%s/target_obds/%s missing\n",
656 obd->obd_type->typ_name, obd->obd_name,
661 rc = obd_fid_fini(tgt->ltd_exp->exp_obd);
663 CERROR("Can't finanize fids factory\n");
665 CDEBUG(D_INFO, "Disconnected from %s(%s) successfully\n",
666 tgt->ltd_exp->exp_obd->obd_name,
667 tgt->ltd_exp->exp_obd->obd_uuid.uuid);
669 obd_register_observer(tgt->ltd_exp->exp_obd, NULL);
670 rc = obd_disconnect(tgt->ltd_exp);
672 if (tgt->ltd_active) {
673 CERROR("Target %s disconnect error %d\n",
674 tgt->ltd_uuid.uuid, rc);
678 lmv_activate_target(lmv, tgt, 0);
683 static int lmv_disconnect(struct obd_export *exp)
685 struct obd_device *obd = class_exp2obd(exp);
687 struct proc_dir_entry *lmv_proc_dir;
689 struct lmv_obd *lmv = &obd->u.lmv;
698 * Only disconnect the underlying layers on the final disconnect.
701 if (lmv->refcount != 0)
704 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
705 if (lmv->tgts[i] == NULL || lmv->tgts[i]->ltd_exp == NULL)
708 lmv_disconnect_mdc(obd, lmv->tgts[i]);
712 lmv_proc_dir = lprocfs_srch(obd->obd_proc_entry, "target_obds");
714 lprocfs_remove(&lmv_proc_dir);
716 CERROR("/proc/fs/lustre/%s/%s/target_obds missing\n",
717 obd->obd_type->typ_name, obd->obd_name);
723 * This is the case when no real connection is established by
724 * lmv_check_connect().
727 class_export_put(exp);
728 rc = class_disconnect(exp);
729 if (lmv->refcount == 0)
734 static int lmv_fid2path(struct obd_export *exp, int len, void *karg, void *uarg)
736 struct obd_device *obddev = class_exp2obd(exp);
737 struct lmv_obd *lmv = &obddev->u.lmv;
738 struct getinfo_fid2path *gf;
739 struct lmv_tgt_desc *tgt;
740 struct getinfo_fid2path *remote_gf = NULL;
741 int remote_gf_size = 0;
744 gf = (struct getinfo_fid2path *)karg;
745 tgt = lmv_find_target(lmv, &gf->gf_fid);
747 RETURN(PTR_ERR(tgt));
750 rc = obd_iocontrol(OBD_IOC_FID2PATH, tgt->ltd_exp, len, gf, uarg);
751 if (rc != 0 && rc != -EREMOTE)
752 GOTO(out_fid2path, rc);
754 /* If remote_gf != NULL, it means just building the
755 * path on the remote MDT, copy this path segement to gf */
756 if (remote_gf != NULL) {
757 struct getinfo_fid2path *ori_gf;
760 ori_gf = (struct getinfo_fid2path *)karg;
761 if (strlen(ori_gf->gf_path) +
762 strlen(gf->gf_path) > ori_gf->gf_pathlen)
763 GOTO(out_fid2path, rc = -EOVERFLOW);
765 ptr = ori_gf->gf_path;
767 memmove(ptr + strlen(gf->gf_path) + 1, ptr,
768 strlen(ori_gf->gf_path));
770 strncpy(ptr, gf->gf_path, strlen(gf->gf_path));
771 ptr += strlen(gf->gf_path);
775 CDEBUG(D_INFO, "%s: get path %s "DFID" rec: "LPU64" ln: %u\n",
776 tgt->ltd_exp->exp_obd->obd_name,
777 gf->gf_path, PFID(&gf->gf_fid), gf->gf_recno,
781 GOTO(out_fid2path, rc);
783 /* sigh, has to go to another MDT to do path building further */
784 if (remote_gf == NULL) {
785 remote_gf_size = sizeof(*remote_gf) + PATH_MAX;
786 OBD_ALLOC(remote_gf, remote_gf_size);
787 if (remote_gf == NULL)
788 GOTO(out_fid2path, rc = -ENOMEM);
789 remote_gf->gf_pathlen = PATH_MAX;
792 if (!fid_is_sane(&gf->gf_fid)) {
793 CERROR("%s: invalid FID "DFID": rc = %d\n",
794 tgt->ltd_exp->exp_obd->obd_name,
795 PFID(&gf->gf_fid), -EINVAL);
796 GOTO(out_fid2path, rc = -EINVAL);
799 tgt = lmv_find_target(lmv, &gf->gf_fid);
801 GOTO(out_fid2path, rc = -EINVAL);
803 remote_gf->gf_fid = gf->gf_fid;
804 remote_gf->gf_recno = -1;
805 remote_gf->gf_linkno = -1;
806 memset(remote_gf->gf_path, 0, remote_gf->gf_pathlen);
808 goto repeat_fid2path;
811 if (remote_gf != NULL)
812 OBD_FREE(remote_gf, remote_gf_size);
816 static int lmv_hsm_req_count(struct lmv_obd *lmv,
817 const struct hsm_user_request *hur,
818 const struct lmv_tgt_desc *tgt_mds)
822 struct lmv_tgt_desc *curr_tgt;
824 /* count how many requests must be sent to the given target */
825 for (i = 0; i < hur->hur_request.hr_itemcount; i++) {
826 curr_tgt = lmv_find_target(lmv, &hur->hur_user_item[i].hui_fid);
827 if (obd_uuid_equals(&curr_tgt->ltd_uuid, &tgt_mds->ltd_uuid))
833 static void lmv_hsm_req_build(struct lmv_obd *lmv,
834 struct hsm_user_request *hur_in,
835 const struct lmv_tgt_desc *tgt_mds,
836 struct hsm_user_request *hur_out)
839 struct lmv_tgt_desc *curr_tgt;
841 /* build the hsm_user_request for the given target */
842 hur_out->hur_request = hur_in->hur_request;
844 for (i = 0; i < hur_in->hur_request.hr_itemcount; i++) {
845 curr_tgt = lmv_find_target(lmv,
846 &hur_in->hur_user_item[i].hui_fid);
847 if (obd_uuid_equals(&curr_tgt->ltd_uuid, &tgt_mds->ltd_uuid)) {
848 hur_out->hur_user_item[nr_out] =
849 hur_in->hur_user_item[i];
853 hur_out->hur_request.hr_itemcount = nr_out;
854 memcpy(hur_data(hur_out), hur_data(hur_in),
855 hur_in->hur_request.hr_data_len);
858 static int lmv_hsm_ct_unregister(struct lmv_obd *lmv, unsigned int cmd, int len,
859 struct lustre_kernelcomm *lk, void *uarg)
865 /* unregister request (call from llapi_hsm_copytool_fini) */
866 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
867 /* best effort: try to clean as much as possible
868 * (continue on error) */
869 obd_iocontrol(cmd, lmv->tgts[i]->ltd_exp, len, lk, uarg);
872 /* Whatever the result, remove copytool from kuc groups.
873 * Unreached coordinators will get EPIPE on next requests
874 * and will unregister automatically.
876 rc = libcfs_kkuc_group_rem(lk->lk_uid, lk->lk_group);
880 static int lmv_hsm_ct_register(struct lmv_obd *lmv, unsigned int cmd, int len,
881 struct lustre_kernelcomm *lk, void *uarg)
886 bool any_set = false;
889 /* All or nothing: try to register to all MDS.
890 * In case of failure, unregister from previous MDS,
891 * except if it because of inactive target. */
892 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
893 err = obd_iocontrol(cmd, lmv->tgts[i]->ltd_exp,
896 if (lmv->tgts[i]->ltd_active) {
897 /* permanent error */
898 CERROR("%s: iocontrol MDC %s on MDT"
899 " idx %d cmd %x: err = %d\n",
900 class_exp2obd(lmv->exp)->obd_name,
901 lmv->tgts[i]->ltd_uuid.uuid,
904 lk->lk_flags |= LK_FLG_STOP;
905 /* unregister from previous MDS */
906 for (j = 0; j < i; j++)
908 lmv->tgts[j]->ltd_exp,
912 /* else: transient error.
913 * kuc will register to the missing MDT
921 /* no registration done: return error */
924 /* at least one registration done, with no failure */
925 filp = fget(lk->lk_wfd);
929 rc = libcfs_kkuc_group_add(filp, lk->lk_uid, lk->lk_group, lk->lk_data);
930 if (rc != 0 && filp != NULL)
938 static int lmv_iocontrol(unsigned int cmd, struct obd_export *exp,
939 int len, void *karg, void *uarg)
941 struct obd_device *obddev = class_exp2obd(exp);
942 struct lmv_obd *lmv = &obddev->u.lmv;
946 __u32 count = lmv->desc.ld_tgt_count;
953 case IOC_OBD_STATFS: {
954 struct obd_ioctl_data *data = karg;
955 struct obd_device *mdc_obd;
956 struct obd_statfs stat_buf = {0};
959 memcpy(&index, data->ioc_inlbuf2, sizeof(__u32));
960 if ((index >= count))
963 if (lmv->tgts[index] == NULL ||
964 lmv->tgts[index]->ltd_active == 0)
967 mdc_obd = class_exp2obd(lmv->tgts[index]->ltd_exp);
972 if (copy_to_user(data->ioc_pbuf2, obd2cli_tgt(mdc_obd),
973 min((int) data->ioc_plen2,
974 (int) sizeof(struct obd_uuid))))
977 rc = obd_statfs(NULL, lmv->tgts[index]->ltd_exp, &stat_buf,
978 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
982 if (copy_to_user(data->ioc_pbuf1, &stat_buf,
983 min((int) data->ioc_plen1,
984 (int) sizeof(stat_buf))))
988 case OBD_IOC_QUOTACTL: {
989 struct if_quotactl *qctl = karg;
990 struct lmv_tgt_desc *tgt = NULL;
991 struct obd_quotactl *oqctl;
993 if (qctl->qc_valid == QC_MDTIDX) {
994 if (count <= qctl->qc_idx)
997 tgt = lmv->tgts[qctl->qc_idx];
998 if (tgt == NULL || tgt->ltd_exp == NULL)
1000 } else if (qctl->qc_valid == QC_UUID) {
1001 for (i = 0; i < count; i++) {
1005 if (!obd_uuid_equals(&tgt->ltd_uuid,
1009 if (tgt->ltd_exp == NULL)
1021 LASSERT(tgt && tgt->ltd_exp);
1022 OBD_ALLOC_PTR(oqctl);
1026 QCTL_COPY(oqctl, qctl);
1027 rc = obd_quotactl(tgt->ltd_exp, oqctl);
1029 QCTL_COPY(qctl, oqctl);
1030 qctl->qc_valid = QC_MDTIDX;
1031 qctl->obd_uuid = tgt->ltd_uuid;
1033 OBD_FREE_PTR(oqctl);
1036 case OBD_IOC_CHANGELOG_SEND:
1037 case OBD_IOC_CHANGELOG_CLEAR: {
1038 struct ioc_changelog *icc = karg;
1040 if (icc->icc_mdtindex >= count)
1043 if (lmv->tgts[icc->icc_mdtindex] == NULL ||
1044 lmv->tgts[icc->icc_mdtindex]->ltd_exp == NULL ||
1045 lmv->tgts[icc->icc_mdtindex]->ltd_active == 0)
1047 rc = obd_iocontrol(cmd, lmv->tgts[icc->icc_mdtindex]->ltd_exp,
1048 sizeof(*icc), icc, NULL);
1051 case LL_IOC_GET_CONNECT_FLAGS: {
1052 if (lmv->tgts[0] == NULL)
1054 rc = obd_iocontrol(cmd, lmv->tgts[0]->ltd_exp, len, karg, uarg);
1057 case OBD_IOC_FID2PATH: {
1058 rc = lmv_fid2path(exp, len, karg, uarg);
1061 case LL_IOC_HSM_STATE_GET:
1062 case LL_IOC_HSM_STATE_SET:
1063 case LL_IOC_HSM_ACTION: {
1064 struct md_op_data *op_data = karg;
1065 struct lmv_tgt_desc *tgt;
1067 tgt = lmv_find_target(lmv, &op_data->op_fid1);
1069 RETURN(PTR_ERR(tgt));
1071 if (tgt->ltd_exp == NULL)
1074 rc = obd_iocontrol(cmd, tgt->ltd_exp, len, karg, uarg);
1077 case LL_IOC_HSM_PROGRESS: {
1078 const struct hsm_progress_kernel *hpk = karg;
1079 struct lmv_tgt_desc *tgt;
1081 tgt = lmv_find_target(lmv, &hpk->hpk_fid);
1083 RETURN(PTR_ERR(tgt));
1084 rc = obd_iocontrol(cmd, tgt->ltd_exp, len, karg, uarg);
1087 case LL_IOC_HSM_REQUEST: {
1088 struct hsm_user_request *hur = karg;
1089 struct lmv_tgt_desc *tgt;
1090 unsigned int reqcount = hur->hur_request.hr_itemcount;
1095 /* if the request is about a single fid
1096 * or if there is a single MDS, no need to split
1098 if (reqcount == 1 || count == 1) {
1099 tgt = lmv_find_target(lmv,
1100 &hur->hur_user_item[0].hui_fid);
1102 RETURN(PTR_ERR(tgt));
1103 rc = obd_iocontrol(cmd, tgt->ltd_exp, len, karg, uarg);
1105 /* split fid list to their respective MDS */
1106 for (i = 0; i < count; i++) {
1107 unsigned int nr, reqlen;
1109 struct hsm_user_request *req;
1111 nr = lmv_hsm_req_count(lmv, hur, lmv->tgts[i]);
1112 if (nr == 0) /* nothing for this MDS */
1115 /* build a request with fids for this MDS */
1116 reqlen = offsetof(typeof(*hur),
1118 + hur->hur_request.hr_data_len;
1119 OBD_ALLOC_LARGE(req, reqlen);
1123 lmv_hsm_req_build(lmv, hur, lmv->tgts[i], req);
1125 rc1 = obd_iocontrol(cmd, lmv->tgts[i]->ltd_exp,
1127 if (rc1 != 0 && rc == 0)
1129 OBD_FREE_LARGE(req, reqlen);
1134 case LL_IOC_LOV_SWAP_LAYOUTS: {
1135 struct md_op_data *op_data = karg;
1136 struct lmv_tgt_desc *tgt1, *tgt2;
1138 tgt1 = lmv_find_target(lmv, &op_data->op_fid1);
1140 RETURN(PTR_ERR(tgt1));
1142 tgt2 = lmv_find_target(lmv, &op_data->op_fid2);
1144 RETURN(PTR_ERR(tgt2));
1146 if ((tgt1->ltd_exp == NULL) || (tgt2->ltd_exp == NULL))
1149 /* only files on same MDT can have their layouts swapped */
1150 if (tgt1->ltd_idx != tgt2->ltd_idx)
1153 rc = obd_iocontrol(cmd, tgt1->ltd_exp, len, karg, uarg);
1156 case LL_IOC_HSM_CT_START: {
1157 struct lustre_kernelcomm *lk = karg;
1158 if (lk->lk_flags & LK_FLG_STOP)
1159 rc = lmv_hsm_ct_unregister(lmv, cmd, len, lk, uarg);
1161 rc = lmv_hsm_ct_register(lmv, cmd, len, lk, uarg);
1165 for (i = 0; i < count; i++) {
1166 struct obd_device *mdc_obd;
1169 if (lmv->tgts[i] == NULL ||
1170 lmv->tgts[i]->ltd_exp == NULL)
1172 /* ll_umount_begin() sets force flag but for lmv, not
1173 * mdc. Let's pass it through */
1174 mdc_obd = class_exp2obd(lmv->tgts[i]->ltd_exp);
1175 mdc_obd->obd_force = obddev->obd_force;
1176 err = obd_iocontrol(cmd, lmv->tgts[i]->ltd_exp, len,
1178 if (err == -ENODATA && cmd == OBD_IOC_POLL_QUOTACHECK) {
1181 if (lmv->tgts[i]->ltd_active) {
1182 CERROR("error: iocontrol MDC %s on MDT"
1183 " idx %d cmd %x: err = %d\n",
1184 lmv->tgts[i]->ltd_uuid.uuid,
1199 static int lmv_all_chars_policy(int count, const char *name,
1210 static int lmv_nid_policy(struct lmv_obd *lmv)
1212 struct obd_import *imp;
1216 * XXX: To get nid we assume that underlying obd device is mdc.
1218 imp = class_exp2cliimp(lmv->tgts[0].ltd_exp);
1219 id = imp->imp_connection->c_self ^ (imp->imp_connection->c_self >> 32);
1220 return id % lmv->desc.ld_tgt_count;
1223 static int lmv_choose_mds(struct lmv_obd *lmv, struct md_op_data *op_data,
1224 placement_policy_t placement)
1226 switch (placement) {
1227 case PLACEMENT_CHAR_POLICY:
1228 return lmv_all_chars_policy(lmv->desc.ld_tgt_count,
1230 op_data->op_namelen);
1231 case PLACEMENT_NID_POLICY:
1232 return lmv_nid_policy(lmv);
1238 CERROR("Unsupported placement policy %x\n", placement);
1244 * This is _inode_ placement policy function (not name).
1246 static int lmv_placement_policy(struct obd_device *obd,
1247 struct md_op_data *op_data,
1250 struct lmv_obd *lmv = &obd->u.lmv;
1253 LASSERT(mds != NULL);
1255 if (lmv->desc.ld_tgt_count == 1) {
1261 * If stripe_offset is provided during setdirstripe
1262 * (setdirstripe -i xx), xx MDS will be choosen.
1264 if (op_data->op_cli_flags & CLI_SET_MEA) {
1265 struct lmv_user_md *lum;
1267 lum = (struct lmv_user_md *)op_data->op_data;
1268 if (lum->lum_type == LMV_STRIPE_TYPE &&
1269 lum->lum_stripe_offset != -1) {
1270 if (lum->lum_stripe_offset >= lmv->desc.ld_tgt_count) {
1271 CERROR("%s: Stripe_offset %d > MDT count %d:"
1272 " rc = %d\n", obd->obd_name,
1273 lum->lum_stripe_offset,
1274 lmv->desc.ld_tgt_count, -ERANGE);
1277 *mds = lum->lum_stripe_offset;
1282 /* Allocate new fid on target according to operation type and parent
1284 *mds = op_data->op_mds;
1288 int __lmv_fid_alloc(struct lmv_obd *lmv, struct lu_fid *fid,
1291 struct lmv_tgt_desc *tgt;
1295 tgt = lmv_get_target(lmv, mds);
1297 RETURN(PTR_ERR(tgt));
1300 * New seq alloc and FLD setup should be atomic. Otherwise we may find
1301 * on server that seq in new allocated fid is not yet known.
1303 mutex_lock(&tgt->ltd_fid_mutex);
1305 if (tgt->ltd_active == 0 || tgt->ltd_exp == NULL)
1306 GOTO(out, rc = -ENODEV);
1309 * Asking underlaying tgt layer to allocate new fid.
1311 rc = obd_fid_alloc(tgt->ltd_exp, fid, NULL);
1313 LASSERT(fid_is_sane(fid));
1319 mutex_unlock(&tgt->ltd_fid_mutex);
1323 int lmv_fid_alloc(struct obd_export *exp, struct lu_fid *fid,
1324 struct md_op_data *op_data)
1326 struct obd_device *obd = class_exp2obd(exp);
1327 struct lmv_obd *lmv = &obd->u.lmv;
1332 LASSERT(op_data != NULL);
1333 LASSERT(fid != NULL);
1335 rc = lmv_placement_policy(obd, op_data, &mds);
1337 CERROR("Can't get target for allocating fid, "
1342 rc = __lmv_fid_alloc(lmv, fid, mds);
1344 CERROR("Can't alloc new fid, rc %d\n", rc);
1351 static int lmv_setup(struct obd_device *obd, struct lustre_cfg *lcfg)
1353 struct lmv_obd *lmv = &obd->u.lmv;
1354 struct lprocfs_static_vars lvars;
1355 struct lmv_desc *desc;
1359 if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1) {
1360 CERROR("LMV setup requires a descriptor\n");
1364 desc = (struct lmv_desc *)lustre_cfg_buf(lcfg, 1);
1365 if (sizeof(*desc) > LUSTRE_CFG_BUFLEN(lcfg, 1)) {
1366 CERROR("Lmv descriptor size wrong: %d > %d\n",
1367 (int)sizeof(*desc), LUSTRE_CFG_BUFLEN(lcfg, 1));
1371 OBD_ALLOC(lmv->tgts, sizeof(*lmv->tgts) * 32);
1372 if (lmv->tgts == NULL)
1374 lmv->tgts_size = 32;
1376 obd_str2uuid(&lmv->desc.ld_uuid, desc->ld_uuid.uuid);
1377 lmv->desc.ld_tgt_count = 0;
1378 lmv->desc.ld_active_tgt_count = 0;
1379 lmv->max_cookiesize = 0;
1380 lmv->max_def_easize = 0;
1381 lmv->max_easize = 0;
1382 lmv->lmv_placement = PLACEMENT_CHAR_POLICY;
1384 spin_lock_init(&lmv->lmv_lock);
1385 mutex_init(&lmv->init_mutex);
1387 lprocfs_lmv_init_vars(&lvars);
1389 lprocfs_obd_setup(obd, lvars.obd_vars);
1392 rc = lprocfs_seq_create(obd->obd_proc_entry, "target_obd",
1393 0444, &lmv_proc_target_fops, obd);
1395 CWARN("%s: error adding LMV target_obd file: rc = %d\n",
1399 rc = fld_client_init(&lmv->lmv_fld, obd->obd_name,
1400 LUSTRE_CLI_FLD_HASH_DHT);
1402 CERROR("Can't init FLD, err %d\n", rc);
1412 static int lmv_cleanup(struct obd_device *obd)
1414 struct lmv_obd *lmv = &obd->u.lmv;
1417 fld_client_fini(&lmv->lmv_fld);
1418 if (lmv->tgts != NULL) {
1420 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
1421 if (lmv->tgts[i] == NULL)
1423 lmv_del_target(lmv, i);
1425 OBD_FREE(lmv->tgts, sizeof(*lmv->tgts) * lmv->tgts_size);
1431 static int lmv_process_config(struct obd_device *obd, obd_count len, void *buf)
1433 struct lustre_cfg *lcfg = buf;
1434 struct obd_uuid obd_uuid;
1440 switch (lcfg->lcfg_command) {
1442 /* modify_mdc_tgts add 0:lustre-clilmv 1:lustre-MDT0000_UUID
1443 * 2:0 3:1 4:lustre-MDT0000-mdc_UUID */
1444 if (LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(obd_uuid.uuid))
1445 GOTO(out, rc = -EINVAL);
1447 obd_str2uuid(&obd_uuid, lustre_cfg_buf(lcfg, 1));
1449 if (sscanf(lustre_cfg_buf(lcfg, 2), "%d", &index) != 1)
1450 GOTO(out, rc = -EINVAL);
1451 if (sscanf(lustre_cfg_buf(lcfg, 3), "%d", &gen) != 1)
1452 GOTO(out, rc = -EINVAL);
1453 rc = lmv_add_target(obd, &obd_uuid, index, gen);
1456 CERROR("Unknown command: %d\n", lcfg->lcfg_command);
1457 GOTO(out, rc = -EINVAL);
1463 static int lmv_statfs(const struct lu_env *env, struct obd_export *exp,
1464 struct obd_statfs *osfs, __u64 max_age, __u32 flags)
1466 struct obd_device *obd = class_exp2obd(exp);
1467 struct lmv_obd *lmv = &obd->u.lmv;
1468 struct obd_statfs *temp;
1473 rc = lmv_check_connect(obd);
1477 OBD_ALLOC(temp, sizeof(*temp));
1481 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
1482 if (lmv->tgts[i] == NULL || lmv->tgts[i]->ltd_exp == NULL)
1485 rc = obd_statfs(env, lmv->tgts[i]->ltd_exp, temp,
1488 CERROR("can't stat MDS #%d (%s), error %d\n", i,
1489 lmv->tgts[i]->ltd_exp->exp_obd->obd_name,
1491 GOTO(out_free_temp, rc);
1496 /* If the statfs is from mount, it will needs
1497 * retrieve necessary information from MDT0.
1498 * i.e. mount does not need the merged osfs
1500 * And also clients can be mounted as long as
1501 * MDT0 is in service*/
1502 if (flags & OBD_STATFS_FOR_MDT0)
1503 GOTO(out_free_temp, rc);
1505 osfs->os_bavail += temp->os_bavail;
1506 osfs->os_blocks += temp->os_blocks;
1507 osfs->os_ffree += temp->os_ffree;
1508 osfs->os_files += temp->os_files;
1514 OBD_FREE(temp, sizeof(*temp));
1518 static int lmv_getstatus(struct obd_export *exp,
1520 struct obd_capa **pc)
1522 struct obd_device *obd = exp->exp_obd;
1523 struct lmv_obd *lmv = &obd->u.lmv;
1527 rc = lmv_check_connect(obd);
1531 rc = md_getstatus(lmv->tgts[0]->ltd_exp, fid, pc);
1535 static int lmv_getxattr(struct obd_export *exp, const struct lu_fid *fid,
1536 struct obd_capa *oc, obd_valid valid, const char *name,
1537 const char *input, int input_size, int output_size,
1538 int flags, struct ptlrpc_request **request)
1540 struct obd_device *obd = exp->exp_obd;
1541 struct lmv_obd *lmv = &obd->u.lmv;
1542 struct lmv_tgt_desc *tgt;
1546 rc = lmv_check_connect(obd);
1550 tgt = lmv_find_target(lmv, fid);
1552 RETURN(PTR_ERR(tgt));
1554 rc = md_getxattr(tgt->ltd_exp, fid, oc, valid, name, input,
1555 input_size, output_size, flags, request);
1560 static int lmv_setxattr(struct obd_export *exp, const struct lu_fid *fid,
1561 struct obd_capa *oc, obd_valid valid, const char *name,
1562 const char *input, int input_size, int output_size,
1563 int flags, __u32 suppgid,
1564 struct ptlrpc_request **request)
1566 struct obd_device *obd = exp->exp_obd;
1567 struct lmv_obd *lmv = &obd->u.lmv;
1568 struct lmv_tgt_desc *tgt;
1572 rc = lmv_check_connect(obd);
1576 tgt = lmv_find_target(lmv, fid);
1578 RETURN(PTR_ERR(tgt));
1580 rc = md_setxattr(tgt->ltd_exp, fid, oc, valid, name, input,
1581 input_size, output_size, flags, suppgid,
1587 static int lmv_getattr(struct obd_export *exp, struct md_op_data *op_data,
1588 struct ptlrpc_request **request)
1590 struct obd_device *obd = exp->exp_obd;
1591 struct lmv_obd *lmv = &obd->u.lmv;
1592 struct lmv_tgt_desc *tgt;
1596 rc = lmv_check_connect(obd);
1600 tgt = lmv_find_target(lmv, &op_data->op_fid1);
1602 RETURN(PTR_ERR(tgt));
1604 if (op_data->op_flags & MF_GET_MDT_IDX) {
1605 op_data->op_mds = tgt->ltd_idx;
1609 rc = md_getattr(tgt->ltd_exp, op_data, request);
1614 static int lmv_null_inode(struct obd_export *exp, const struct lu_fid *fid)
1616 struct obd_device *obd = exp->exp_obd;
1617 struct lmv_obd *lmv = &obd->u.lmv;
1622 rc = lmv_check_connect(obd);
1626 CDEBUG(D_INODE, "CBDATA for "DFID"\n", PFID(fid));
1629 * With DNE every object can have two locks in different namespaces:
1630 * lookup lock in space of MDT storing direntry and update/open lock in
1631 * space of MDT storing inode.
1633 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
1634 if (lmv->tgts[i] == NULL || lmv->tgts[i]->ltd_exp == NULL)
1636 md_null_inode(lmv->tgts[i]->ltd_exp, fid);
1642 static int lmv_find_cbdata(struct obd_export *exp, const struct lu_fid *fid,
1643 ldlm_iterator_t it, void *data)
1645 struct obd_device *obd = exp->exp_obd;
1646 struct lmv_obd *lmv = &obd->u.lmv;
1651 rc = lmv_check_connect(obd);
1655 CDEBUG(D_INODE, "CBDATA for "DFID"\n", PFID(fid));
1658 * With DNE every object can have two locks in different namespaces:
1659 * lookup lock in space of MDT storing direntry and update/open lock in
1660 * space of MDT storing inode.
1662 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
1663 if (lmv->tgts[i] == NULL || lmv->tgts[i]->ltd_exp == NULL)
1665 rc = md_find_cbdata(lmv->tgts[i]->ltd_exp, fid, it, data);
1674 static int lmv_close(struct obd_export *exp, struct md_op_data *op_data,
1675 struct md_open_data *mod, struct ptlrpc_request **request)
1677 struct obd_device *obd = exp->exp_obd;
1678 struct lmv_obd *lmv = &obd->u.lmv;
1679 struct lmv_tgt_desc *tgt;
1683 rc = lmv_check_connect(obd);
1687 tgt = lmv_find_target(lmv, &op_data->op_fid1);
1689 RETURN(PTR_ERR(tgt));
1691 CDEBUG(D_INODE, "CLOSE "DFID"\n", PFID(&op_data->op_fid1));
1692 rc = md_close(tgt->ltd_exp, op_data, mod, request);
1697 *lmv_locate_mds(struct lmv_obd *lmv, struct md_op_data *op_data,
1700 struct lmv_tgt_desc *tgt;
1702 tgt = lmv_find_target(lmv, fid);
1706 op_data->op_mds = tgt->ltd_idx;
1711 int lmv_create(struct obd_export *exp, struct md_op_data *op_data,
1712 const void *data, int datalen, int mode, __u32 uid,
1713 __u32 gid, cfs_cap_t cap_effective, __u64 rdev,
1714 struct ptlrpc_request **request)
1716 struct obd_device *obd = exp->exp_obd;
1717 struct lmv_obd *lmv = &obd->u.lmv;
1718 struct lmv_tgt_desc *tgt;
1722 rc = lmv_check_connect(obd);
1726 if (!lmv->desc.ld_active_tgt_count)
1729 tgt = lmv_locate_mds(lmv, op_data, &op_data->op_fid1);
1731 RETURN(PTR_ERR(tgt));
1733 rc = lmv_fid_alloc(exp, &op_data->op_fid2, op_data);
1737 CDEBUG(D_INODE, "CREATE '%*s' on "DFID" -> mds #%x\n",
1738 op_data->op_namelen, op_data->op_name, PFID(&op_data->op_fid1),
1741 op_data->op_flags |= MF_MDC_CANCEL_FID1;
1742 rc = md_create(tgt->ltd_exp, op_data, data, datalen, mode, uid, gid,
1743 cap_effective, rdev, request);
1746 if (*request == NULL)
1748 CDEBUG(D_INODE, "Created - "DFID"\n", PFID(&op_data->op_fid2));
1753 static int lmv_done_writing(struct obd_export *exp,
1754 struct md_op_data *op_data,
1755 struct md_open_data *mod)
1757 struct obd_device *obd = exp->exp_obd;
1758 struct lmv_obd *lmv = &obd->u.lmv;
1759 struct lmv_tgt_desc *tgt;
1763 rc = lmv_check_connect(obd);
1767 tgt = lmv_find_target(lmv, &op_data->op_fid1);
1769 RETURN(PTR_ERR(tgt));
1771 rc = md_done_writing(tgt->ltd_exp, op_data, mod);
1776 lmv_enqueue_remote(struct obd_export *exp, struct ldlm_enqueue_info *einfo,
1777 struct lookup_intent *it, struct md_op_data *op_data,
1778 struct lustre_handle *lockh, void *lmm, int lmmsize,
1779 int extra_lock_flags)
1781 struct ptlrpc_request *req = it->d.lustre.it_data;
1782 struct obd_device *obd = exp->exp_obd;
1783 struct lmv_obd *lmv = &obd->u.lmv;
1784 struct lustre_handle plock;
1785 struct lmv_tgt_desc *tgt;
1786 struct md_op_data *rdata;
1788 struct mdt_body *body;
1793 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
1794 LASSERT(body != NULL);
1796 if (!(body->valid & OBD_MD_MDS))
1799 CDEBUG(D_INODE, "REMOTE_ENQUEUE '%s' on "DFID" -> "DFID"\n",
1800 LL_IT2STR(it), PFID(&op_data->op_fid1), PFID(&body->fid1));
1803 * We got LOOKUP lock, but we really need attrs.
1805 pmode = it->d.lustre.it_lock_mode;
1806 LASSERT(pmode != 0);
1807 memcpy(&plock, lockh, sizeof(plock));
1808 it->d.lustre.it_lock_mode = 0;
1809 it->d.lustre.it_data = NULL;
1812 it->d.lustre.it_disposition &= ~DISP_ENQ_COMPLETE;
1813 ptlrpc_req_finished(req);
1815 tgt = lmv_find_target(lmv, &fid1);
1817 GOTO(out, rc = PTR_ERR(tgt));
1819 OBD_ALLOC_PTR(rdata);
1821 GOTO(out, rc = -ENOMEM);
1823 rdata->op_fid1 = fid1;
1824 rdata->op_bias = MDS_CROSS_REF;
1826 rc = md_enqueue(tgt->ltd_exp, einfo, it, rdata, lockh,
1827 lmm, lmmsize, NULL, extra_lock_flags);
1828 OBD_FREE_PTR(rdata);
1831 ldlm_lock_decref(&plock, pmode);
1836 lmv_enqueue(struct obd_export *exp, struct ldlm_enqueue_info *einfo,
1837 struct lookup_intent *it, struct md_op_data *op_data,
1838 struct lustre_handle *lockh, void *lmm, int lmmsize,
1839 struct ptlrpc_request **req, __u64 extra_lock_flags)
1841 struct obd_device *obd = exp->exp_obd;
1842 struct lmv_obd *lmv = &obd->u.lmv;
1843 struct lmv_tgt_desc *tgt;
1847 rc = lmv_check_connect(obd);
1851 CDEBUG(D_INODE, "ENQUEUE '%s' on "DFID"\n",
1852 LL_IT2STR(it), PFID(&op_data->op_fid1));
1854 tgt = lmv_locate_mds(lmv, op_data, &op_data->op_fid1);
1856 RETURN(PTR_ERR(tgt));
1858 CDEBUG(D_INODE, "ENQUEUE '%s' on "DFID" -> mds #%d\n",
1859 LL_IT2STR(it), PFID(&op_data->op_fid1), tgt->ltd_idx);
1861 rc = md_enqueue(tgt->ltd_exp, einfo, it, op_data, lockh,
1862 lmm, lmmsize, req, extra_lock_flags);
1864 if (rc == 0 && it && it->it_op == IT_OPEN) {
1865 rc = lmv_enqueue_remote(exp, einfo, it, op_data, lockh,
1866 lmm, lmmsize, extra_lock_flags);
1872 lmv_getattr_name(struct obd_export *exp,struct md_op_data *op_data,
1873 struct ptlrpc_request **request)
1875 struct ptlrpc_request *req = NULL;
1876 struct obd_device *obd = exp->exp_obd;
1877 struct lmv_obd *lmv = &obd->u.lmv;
1878 struct lmv_tgt_desc *tgt;
1879 struct mdt_body *body;
1883 rc = lmv_check_connect(obd);
1887 tgt = lmv_locate_mds(lmv, op_data, &op_data->op_fid1);
1889 RETURN(PTR_ERR(tgt));
1891 CDEBUG(D_INODE, "GETATTR_NAME for %*s on "DFID" -> mds #%d\n",
1892 op_data->op_namelen, op_data->op_name, PFID(&op_data->op_fid1),
1895 rc = md_getattr_name(tgt->ltd_exp, op_data, request);
1899 body = req_capsule_server_get(&(*request)->rq_pill,
1901 LASSERT(body != NULL);
1903 if (body->valid & OBD_MD_MDS) {
1904 struct lu_fid rid = body->fid1;
1905 CDEBUG(D_INODE, "Request attrs for "DFID"\n",
1908 tgt = lmv_find_target(lmv, &rid);
1910 ptlrpc_req_finished(*request);
1911 RETURN(PTR_ERR(tgt));
1914 op_data->op_fid1 = rid;
1915 op_data->op_valid |= OBD_MD_FLCROSSREF;
1916 op_data->op_namelen = 0;
1917 op_data->op_name = NULL;
1918 rc = md_getattr_name(tgt->ltd_exp, op_data, &req);
1919 ptlrpc_req_finished(*request);
1926 #define md_op_data_fid(op_data, fl) \
1927 (fl == MF_MDC_CANCEL_FID1 ? &op_data->op_fid1 : \
1928 fl == MF_MDC_CANCEL_FID2 ? &op_data->op_fid2 : \
1929 fl == MF_MDC_CANCEL_FID3 ? &op_data->op_fid3 : \
1930 fl == MF_MDC_CANCEL_FID4 ? &op_data->op_fid4 : \
1933 static int lmv_early_cancel(struct obd_export *exp, struct md_op_data *op_data,
1934 int op_tgt, ldlm_mode_t mode, int bits, int flag)
1936 struct lu_fid *fid = md_op_data_fid(op_data, flag);
1937 struct obd_device *obd = exp->exp_obd;
1938 struct lmv_obd *lmv = &obd->u.lmv;
1939 struct lmv_tgt_desc *tgt;
1940 ldlm_policy_data_t policy = {{0}};
1944 if (!fid_is_sane(fid))
1947 tgt = lmv_find_target(lmv, fid);
1949 RETURN(PTR_ERR(tgt));
1951 if (tgt->ltd_idx != op_tgt) {
1952 CDEBUG(D_INODE, "EARLY_CANCEL on "DFID"\n", PFID(fid));
1953 policy.l_inodebits.bits = bits;
1954 rc = md_cancel_unused(tgt->ltd_exp, fid, &policy,
1955 mode, LCF_ASYNC, NULL);
1958 "EARLY_CANCEL skip operation target %d on "DFID"\n",
1960 op_data->op_flags |= flag;
1968 * llite passes fid of an target inode in op_data->op_fid1 and id of directory in
1971 static int lmv_link(struct obd_export *exp, struct md_op_data *op_data,
1972 struct ptlrpc_request **request)
1974 struct obd_device *obd = exp->exp_obd;
1975 struct lmv_obd *lmv = &obd->u.lmv;
1976 struct lmv_tgt_desc *tgt;
1980 rc = lmv_check_connect(obd);
1984 LASSERT(op_data->op_namelen != 0);
1986 CDEBUG(D_INODE, "LINK "DFID":%*s to "DFID"\n",
1987 PFID(&op_data->op_fid2), op_data->op_namelen,
1988 op_data->op_name, PFID(&op_data->op_fid1));
1990 op_data->op_fsuid = current_fsuid();
1991 op_data->op_fsgid = current_fsgid();
1992 op_data->op_cap = cfs_curproc_cap_pack();
1993 tgt = lmv_locate_mds(lmv, op_data, &op_data->op_fid2);
1995 RETURN(PTR_ERR(tgt));
1998 * Cancel UPDATE lock on child (fid1).
2000 op_data->op_flags |= MF_MDC_CANCEL_FID2;
2001 rc = lmv_early_cancel(exp, op_data, tgt->ltd_idx, LCK_EX,
2002 MDS_INODELOCK_UPDATE, MF_MDC_CANCEL_FID1);
2006 rc = md_link(tgt->ltd_exp, op_data, request);
2011 static int lmv_rename(struct obd_export *exp, struct md_op_data *op_data,
2012 const char *old, int oldlen, const char *new, int newlen,
2013 struct ptlrpc_request **request)
2015 struct obd_device *obd = exp->exp_obd;
2016 struct lmv_obd *lmv = &obd->u.lmv;
2017 struct lmv_tgt_desc *src_tgt;
2018 struct lmv_tgt_desc *tgt_tgt;
2022 LASSERT(oldlen != 0);
2024 CDEBUG(D_INODE, "RENAME %*s in "DFID" to %*s in "DFID"\n",
2025 oldlen, old, PFID(&op_data->op_fid1),
2026 newlen, new, PFID(&op_data->op_fid2));
2028 rc = lmv_check_connect(obd);
2032 op_data->op_fsuid = current_fsuid();
2033 op_data->op_fsgid = current_fsgid();
2034 op_data->op_cap = cfs_curproc_cap_pack();
2035 src_tgt = lmv_locate_mds(lmv, op_data, &op_data->op_fid1);
2036 if (IS_ERR(src_tgt))
2037 RETURN(PTR_ERR(src_tgt));
2039 tgt_tgt = lmv_locate_mds(lmv, op_data, &op_data->op_fid2);
2040 if (IS_ERR(tgt_tgt))
2041 RETURN(PTR_ERR(tgt_tgt));
2043 * LOOKUP lock on src child (fid3) should also be cancelled for
2044 * src_tgt in mdc_rename.
2046 op_data->op_flags |= MF_MDC_CANCEL_FID1 | MF_MDC_CANCEL_FID3;
2049 * Cancel UPDATE locks on tgt parent (fid2), tgt_tgt is its
2052 rc = lmv_early_cancel(exp, op_data, src_tgt->ltd_idx,
2053 LCK_EX, MDS_INODELOCK_UPDATE,
2054 MF_MDC_CANCEL_FID2);
2057 * Cancel LOOKUP locks on tgt child (fid4) for parent tgt_tgt.
2060 rc = lmv_early_cancel(exp, op_data, src_tgt->ltd_idx,
2061 LCK_EX, MDS_INODELOCK_LOOKUP,
2062 MF_MDC_CANCEL_FID4);
2066 * Cancel all the locks on tgt child (fid4).
2069 rc = lmv_early_cancel(exp, op_data, src_tgt->ltd_idx,
2070 LCK_EX, MDS_INODELOCK_FULL,
2071 MF_MDC_CANCEL_FID4);
2074 rc = md_rename(src_tgt->ltd_exp, op_data, old, oldlen,
2075 new, newlen, request);
2079 static int lmv_setattr(struct obd_export *exp, struct md_op_data *op_data,
2080 void *ea, int ealen, void *ea2, int ea2len,
2081 struct ptlrpc_request **request,
2082 struct md_open_data **mod)
2084 struct obd_device *obd = exp->exp_obd;
2085 struct lmv_obd *lmv = &obd->u.lmv;
2086 struct lmv_tgt_desc *tgt;
2090 rc = lmv_check_connect(obd);
2094 CDEBUG(D_INODE, "SETATTR for "DFID", valid 0x%x\n",
2095 PFID(&op_data->op_fid1), op_data->op_attr.ia_valid);
2097 op_data->op_flags |= MF_MDC_CANCEL_FID1;
2098 tgt = lmv_find_target(lmv, &op_data->op_fid1);
2100 RETURN(PTR_ERR(tgt));
2102 rc = md_setattr(tgt->ltd_exp, op_data, ea, ealen, ea2,
2103 ea2len, request, mod);
2108 static int lmv_sync(struct obd_export *exp, const struct lu_fid *fid,
2109 struct obd_capa *oc, struct ptlrpc_request **request)
2111 struct obd_device *obd = exp->exp_obd;
2112 struct lmv_obd *lmv = &obd->u.lmv;
2113 struct lmv_tgt_desc *tgt;
2117 rc = lmv_check_connect(obd);
2121 tgt = lmv_find_target(lmv, fid);
2123 RETURN(PTR_ERR(tgt));
2125 rc = md_sync(tgt->ltd_exp, fid, oc, request);
2130 * Adjust a set of pages, each page containing an array of lu_dirpages,
2131 * so that each page can be used as a single logical lu_dirpage.
2133 * A lu_dirpage is laid out as follows, where s = ldp_hash_start,
2134 * e = ldp_hash_end, f = ldp_flags, p = padding, and each "ent" is a
2135 * struct lu_dirent. It has size up to LU_PAGE_SIZE. The ldp_hash_end
2136 * value is used as a cookie to request the next lu_dirpage in a
2137 * directory listing that spans multiple pages (two in this example):
2140 * .|--------v------- -----.
2141 * |s|e|f|p|ent|ent| ... |ent|
2142 * '--|-------------- -----' Each CFS_PAGE contains a single
2143 * '------. lu_dirpage.
2144 * .---------v------- -----.
2145 * |s|e|f|p|ent| 0 | ... | 0 |
2146 * '----------------- -----'
2148 * However, on hosts where the native VM page size (PAGE_CACHE_SIZE) is
2149 * larger than LU_PAGE_SIZE, a single host page may contain multiple
2150 * lu_dirpages. After reading the lu_dirpages from the MDS, the
2151 * ldp_hash_end of the first lu_dirpage refers to the one immediately
2152 * after it in the same CFS_PAGE (arrows simplified for brevity, but
2153 * in general e0==s1, e1==s2, etc.):
2155 * .-------------------- -----.
2156 * |s0|e0|f0|p|ent|ent| ... |ent|
2157 * |---v---------------- -----|
2158 * |s1|e1|f1|p|ent|ent| ... |ent|
2159 * |---v---------------- -----| Here, each CFS_PAGE contains
2160 * ... multiple lu_dirpages.
2161 * |---v---------------- -----|
2162 * |s'|e'|f'|p|ent|ent| ... |ent|
2163 * '---|---------------- -----'
2165 * .----------------------------.
2168 * This structure is transformed into a single logical lu_dirpage as follows:
2170 * - Replace e0 with e' so the request for the next lu_dirpage gets the page
2171 * labeled 'next CFS_PAGE'.
2173 * - Copy the LDF_COLLIDE flag from f' to f0 to correctly reflect whether
2174 * a hash collision with the next page exists.
2176 * - Adjust the lde_reclen of the ending entry of each lu_dirpage to span
2177 * to the first entry of the next lu_dirpage.
2179 #if PAGE_CACHE_SIZE > LU_PAGE_SIZE
2180 static void lmv_adjust_dirpages(struct page **pages, int ncfspgs, int nlupgs)
2184 for (i = 0; i < ncfspgs; i++) {
2185 struct lu_dirpage *dp = kmap(pages[i]);
2186 struct lu_dirpage *first = dp;
2187 struct lu_dirent *end_dirent = NULL;
2188 struct lu_dirent *ent;
2189 __u64 hash_end = dp->ldp_hash_end;
2190 __u32 flags = dp->ldp_flags;
2192 while (--nlupgs > 0) {
2193 ent = lu_dirent_start(dp);
2194 for (end_dirent = ent; ent != NULL;
2195 end_dirent = ent, ent = lu_dirent_next(ent));
2197 /* Advance dp to next lu_dirpage. */
2198 dp = (struct lu_dirpage *)((char *)dp + LU_PAGE_SIZE);
2200 /* Check if we've reached the end of the CFS_PAGE. */
2201 if (!((unsigned long)dp & ~CFS_PAGE_MASK))
2204 /* Save the hash and flags of this lu_dirpage. */
2205 hash_end = dp->ldp_hash_end;
2206 flags = dp->ldp_flags;
2208 /* Check if lu_dirpage contains no entries. */
2212 /* Enlarge the end entry lde_reclen from 0 to
2213 * first entry of next lu_dirpage. */
2214 LASSERT(le16_to_cpu(end_dirent->lde_reclen) == 0);
2215 end_dirent->lde_reclen =
2216 cpu_to_le16((char *)(dp->ldp_entries) -
2217 (char *)end_dirent);
2220 first->ldp_hash_end = hash_end;
2221 first->ldp_flags &= ~cpu_to_le32(LDF_COLLIDE);
2222 first->ldp_flags |= flags & cpu_to_le32(LDF_COLLIDE);
2226 LASSERTF(nlupgs == 0, "left = %d", nlupgs);
2229 #define lmv_adjust_dirpages(pages, ncfspgs, nlupgs) do {} while (0)
2230 #endif /* PAGE_CACHE_SIZE > LU_PAGE_SIZE */
2232 static int lmv_readpage(struct obd_export *exp, struct md_op_data *op_data,
2233 struct page **pages, struct ptlrpc_request **request)
2235 struct obd_device *obd = exp->exp_obd;
2236 struct lmv_obd *lmv = &obd->u.lmv;
2237 __u64 offset = op_data->op_offset;
2239 int ncfspgs; /* pages read in PAGE_CACHE_SIZE */
2240 int nlupgs; /* pages read in LU_PAGE_SIZE */
2241 struct lmv_tgt_desc *tgt;
2244 rc = lmv_check_connect(obd);
2248 CDEBUG(D_INODE, "READPAGE at "LPX64" from "DFID"\n",
2249 offset, PFID(&op_data->op_fid1));
2251 tgt = lmv_find_target(lmv, &op_data->op_fid1);
2253 RETURN(PTR_ERR(tgt));
2255 rc = md_readpage(tgt->ltd_exp, op_data, pages, request);
2259 ncfspgs = ((*request)->rq_bulk->bd_nob_transferred +
2260 PAGE_CACHE_SIZE - 1) >> PAGE_CACHE_SHIFT;
2261 nlupgs = (*request)->rq_bulk->bd_nob_transferred >> LU_PAGE_SHIFT;
2262 LASSERT(!((*request)->rq_bulk->bd_nob_transferred & ~LU_PAGE_MASK));
2263 LASSERT(ncfspgs > 0 && ncfspgs <= op_data->op_npages);
2265 CDEBUG(D_INODE, "read %d(%d)/%d pages\n", ncfspgs, nlupgs,
2266 op_data->op_npages);
2268 lmv_adjust_dirpages(pages, ncfspgs, nlupgs);
2273 static int lmv_unlink(struct obd_export *exp, struct md_op_data *op_data,
2274 struct ptlrpc_request **request)
2276 struct obd_device *obd = exp->exp_obd;
2277 struct lmv_obd *lmv = &obd->u.lmv;
2278 struct lmv_tgt_desc *tgt = NULL;
2279 struct mdt_body *body;
2283 rc = lmv_check_connect(obd);
2287 /* Send unlink requests to the MDT where the child is located */
2288 if (likely(!fid_is_zero(&op_data->op_fid2)))
2289 tgt = lmv_locate_mds(lmv, op_data, &op_data->op_fid2);
2291 tgt = lmv_locate_mds(lmv, op_data, &op_data->op_fid1);
2293 RETURN(PTR_ERR(tgt));
2295 op_data->op_fsuid = current_fsuid();
2296 op_data->op_fsgid = current_fsgid();
2297 op_data->op_cap = cfs_curproc_cap_pack();
2300 * If child's fid is given, cancel unused locks for it if it is from
2301 * another export than parent.
2303 * LOOKUP lock for child (fid3) should also be cancelled on parent
2304 * tgt_tgt in mdc_unlink().
2306 op_data->op_flags |= MF_MDC_CANCEL_FID1 | MF_MDC_CANCEL_FID3;
2309 * Cancel FULL locks on child (fid3).
2311 rc = lmv_early_cancel(exp, op_data, tgt->ltd_idx, LCK_EX,
2312 MDS_INODELOCK_FULL, MF_MDC_CANCEL_FID3);
2317 CDEBUG(D_INODE, "unlink with fid="DFID"/"DFID" -> mds #%d\n",
2318 PFID(&op_data->op_fid1), PFID(&op_data->op_fid2), tgt->ltd_idx);
2320 rc = md_unlink(tgt->ltd_exp, op_data, request);
2321 if (rc != 0 && rc != -EREMOTE)
2324 body = req_capsule_server_get(&(*request)->rq_pill, &RMF_MDT_BODY);
2328 /* Not cross-ref case, just get out of here. */
2329 if (likely(!(body->valid & OBD_MD_MDS)))
2332 CDEBUG(D_INODE, "%s: try unlink to another MDT for "DFID"\n",
2333 exp->exp_obd->obd_name, PFID(&body->fid1));
2335 /* This is a remote object, try remote MDT, Note: it may
2336 * try more than 1 time here, Considering following case
2337 * /mnt/lustre is root on MDT0, remote1 is on MDT1
2338 * 1. Initially A does not know where remote1 is, it send
2339 * unlink RPC to MDT0, MDT0 return -EREMOTE, it will
2340 * resend unlink RPC to MDT1 (retry 1st time).
2342 * 2. During the unlink RPC in flight,
2343 * client B mv /mnt/lustre/remote1 /mnt/lustre/remote2
2344 * and create new remote1, but on MDT0
2346 * 3. MDT1 get unlink RPC(from A), then do remote lock on
2347 * /mnt/lustre, then lookup get fid of remote1, and find
2348 * it is remote dir again, and replay -EREMOTE again.
2350 * 4. Then A will resend unlink RPC to MDT0. (retry 2nd times).
2352 * In theory, it might try unlimited time here, but it should
2353 * be very rare case. */
2354 op_data->op_fid2 = body->fid1;
2355 ptlrpc_req_finished(*request);
2361 static int lmv_precleanup(struct obd_device *obd, enum obd_cleanup_stage stage)
2363 struct lmv_obd *lmv = &obd->u.lmv;
2367 case OBD_CLEANUP_EARLY:
2368 /* XXX: here should be calling obd_precleanup() down to
2371 case OBD_CLEANUP_EXPORTS:
2372 fld_client_proc_fini(&lmv->lmv_fld);
2373 lprocfs_obd_cleanup(obd);
2381 static int lmv_get_info(const struct lu_env *env, struct obd_export *exp,
2382 __u32 keylen, void *key, __u32 *vallen, void *val,
2383 struct lov_stripe_md *lsm)
2385 struct obd_device *obd;
2386 struct lmv_obd *lmv;
2390 obd = class_exp2obd(exp);
2392 CDEBUG(D_IOCTL, "Invalid client cookie "LPX64"\n",
2393 exp->exp_handle.h_cookie);
2398 if (keylen >= strlen("remote_flag") && !strcmp(key, "remote_flag")) {
2399 struct lmv_tgt_desc *tgt;
2402 rc = lmv_check_connect(obd);
2406 LASSERT(*vallen == sizeof(__u32));
2407 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
2410 * All tgts should be connected when this gets called.
2412 if (tgt == NULL || tgt->ltd_exp == NULL)
2415 if (!obd_get_info(env, tgt->ltd_exp, keylen, key,
2420 } else if (KEY_IS(KEY_MAX_EASIZE) || KEY_IS(KEY_CONN_DATA)) {
2421 rc = lmv_check_connect(obd);
2426 * Forwarding this request to first MDS, it should know LOV
2429 rc = obd_get_info(env, lmv->tgts[0]->ltd_exp, keylen, key,
2431 if (!rc && KEY_IS(KEY_CONN_DATA))
2432 exp->exp_connect_data = *(struct obd_connect_data *)val;
2434 } else if (KEY_IS(KEY_TGT_COUNT)) {
2435 *((int *)val) = lmv->desc.ld_tgt_count;
2439 CDEBUG(D_IOCTL, "Invalid key\n");
2443 int lmv_set_info_async(const struct lu_env *env, struct obd_export *exp,
2444 obd_count keylen, void *key, obd_count vallen,
2445 void *val, struct ptlrpc_request_set *set)
2447 struct lmv_tgt_desc *tgt;
2448 struct obd_device *obd;
2449 struct lmv_obd *lmv;
2453 obd = class_exp2obd(exp);
2455 CDEBUG(D_IOCTL, "Invalid client cookie "LPX64"\n",
2456 exp->exp_handle.h_cookie);
2461 if (KEY_IS(KEY_READ_ONLY) || KEY_IS(KEY_FLUSH_CTX)) {
2464 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
2467 if (tgt == NULL || tgt->ltd_exp == NULL)
2470 err = obd_set_info_async(env, tgt->ltd_exp,
2471 keylen, key, vallen, val, set);
2482 int lmv_packmd(struct obd_export *exp, struct lov_mds_md **lmmp,
2483 struct lov_stripe_md *lsm)
2485 struct obd_device *obd = class_exp2obd(exp);
2486 struct lmv_obd *lmv = &obd->u.lmv;
2487 struct lmv_stripe_md *meap;
2488 struct lmv_stripe_md *lsmp;
2493 mea_size = lmv_get_easize(lmv);
2497 if (*lmmp && !lsm) {
2498 OBD_FREE_LARGE(*lmmp, mea_size);
2503 if (*lmmp == NULL) {
2504 OBD_ALLOC_LARGE(*lmmp, mea_size);
2512 lsmp = (struct lmv_stripe_md *)lsm;
2513 meap = (struct lmv_stripe_md *)*lmmp;
2515 if (lsmp->mea_magic != MEA_MAGIC_LAST_CHAR &&
2516 lsmp->mea_magic != MEA_MAGIC_ALL_CHARS)
2519 meap->mea_magic = cpu_to_le32(lsmp->mea_magic);
2520 meap->mea_count = cpu_to_le32(lsmp->mea_count);
2521 meap->mea_master = cpu_to_le32(lsmp->mea_master);
2523 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
2524 meap->mea_ids[i] = lsmp->mea_ids[i];
2525 fid_cpu_to_le(&meap->mea_ids[i], &lsmp->mea_ids[i]);
2531 int lmv_unpackmd(struct obd_export *exp, struct lov_stripe_md **lsmp,
2532 struct lov_mds_md *lmm, int lmm_size)
2534 struct obd_device *obd = class_exp2obd(exp);
2535 struct lmv_stripe_md **tmea = (struct lmv_stripe_md **)lsmp;
2536 struct lmv_stripe_md *mea = (struct lmv_stripe_md *)lmm;
2537 struct lmv_obd *lmv = &obd->u.lmv;
2543 mea_size = lmv_get_easize(lmv);
2547 if (*lsmp != NULL && lmm == NULL) {
2548 OBD_FREE_LARGE(*tmea, mea_size);
2553 LASSERT(mea_size == lmm_size);
2555 OBD_ALLOC_LARGE(*tmea, mea_size);
2562 if (mea->mea_magic == MEA_MAGIC_LAST_CHAR ||
2563 mea->mea_magic == MEA_MAGIC_ALL_CHARS ||
2564 mea->mea_magic == MEA_MAGIC_HASH_SEGMENT)
2566 magic = le32_to_cpu(mea->mea_magic);
2569 * Old mea is not handled here.
2571 CERROR("Old not supportable EA is found\n");
2575 (*tmea)->mea_magic = magic;
2576 (*tmea)->mea_count = le32_to_cpu(mea->mea_count);
2577 (*tmea)->mea_master = le32_to_cpu(mea->mea_master);
2579 for (i = 0; i < (*tmea)->mea_count; i++) {
2580 (*tmea)->mea_ids[i] = mea->mea_ids[i];
2581 fid_le_to_cpu(&(*tmea)->mea_ids[i], &(*tmea)->mea_ids[i]);
2586 static int lmv_cancel_unused(struct obd_export *exp, const struct lu_fid *fid,
2587 ldlm_policy_data_t *policy, ldlm_mode_t mode,
2588 ldlm_cancel_flags_t flags, void *opaque)
2590 struct obd_device *obd = exp->exp_obd;
2591 struct lmv_obd *lmv = &obd->u.lmv;
2597 LASSERT(fid != NULL);
2599 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
2600 if (lmv->tgts[i] == NULL || lmv->tgts[i]->ltd_exp == NULL ||
2601 lmv->tgts[i]->ltd_active == 0)
2604 err = md_cancel_unused(lmv->tgts[i]->ltd_exp, fid,
2605 policy, mode, flags, opaque);
2612 int lmv_set_lock_data(struct obd_export *exp, __u64 *lockh, void *data,
2615 struct lmv_obd *lmv = &exp->exp_obd->u.lmv;
2619 rc = md_set_lock_data(lmv->tgts[0]->ltd_exp, lockh, data, bits);
2623 ldlm_mode_t lmv_lock_match(struct obd_export *exp, __u64 flags,
2624 const struct lu_fid *fid, ldlm_type_t type,
2625 ldlm_policy_data_t *policy, ldlm_mode_t mode,
2626 struct lustre_handle *lockh)
2628 struct obd_device *obd = exp->exp_obd;
2629 struct lmv_obd *lmv = &obd->u.lmv;
2634 CDEBUG(D_INODE, "Lock match for "DFID"\n", PFID(fid));
2637 * With CMD every object can have two locks in different namespaces:
2638 * lookup lock in space of mds storing direntry and update/open lock in
2639 * space of mds storing inode. Thus we check all targets, not only that
2640 * one fid was created in.
2642 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
2643 if (lmv->tgts[i] == NULL ||
2644 lmv->tgts[i]->ltd_exp == NULL ||
2645 lmv->tgts[i]->ltd_active == 0)
2648 rc = md_lock_match(lmv->tgts[i]->ltd_exp, flags, fid,
2649 type, policy, mode, lockh);
2657 int lmv_get_lustre_md(struct obd_export *exp, struct ptlrpc_request *req,
2658 struct obd_export *dt_exp, struct obd_export *md_exp,
2659 struct lustre_md *md)
2661 struct lmv_obd *lmv = &exp->exp_obd->u.lmv;
2663 return md_get_lustre_md(lmv->tgts[0]->ltd_exp, req, dt_exp, md_exp, md);
2666 int lmv_free_lustre_md(struct obd_export *exp, struct lustre_md *md)
2668 struct obd_device *obd = exp->exp_obd;
2669 struct lmv_obd *lmv = &obd->u.lmv;
2673 obd_free_memmd(exp, (void *)&md->mea);
2674 RETURN(md_free_lustre_md(lmv->tgts[0]->ltd_exp, md));
2677 int lmv_set_open_replay_data(struct obd_export *exp,
2678 struct obd_client_handle *och,
2679 struct ptlrpc_request *open_req)
2681 struct obd_device *obd = exp->exp_obd;
2682 struct lmv_obd *lmv = &obd->u.lmv;
2683 struct lmv_tgt_desc *tgt;
2686 tgt = lmv_find_target(lmv, &och->och_fid);
2688 RETURN(PTR_ERR(tgt));
2690 RETURN(md_set_open_replay_data(tgt->ltd_exp, och, open_req));
2693 int lmv_clear_open_replay_data(struct obd_export *exp,
2694 struct obd_client_handle *och)
2696 struct obd_device *obd = exp->exp_obd;
2697 struct lmv_obd *lmv = &obd->u.lmv;
2698 struct lmv_tgt_desc *tgt;
2701 tgt = lmv_find_target(lmv, &och->och_fid);
2703 RETURN(PTR_ERR(tgt));
2705 RETURN(md_clear_open_replay_data(tgt->ltd_exp, och));
2708 static int lmv_get_remote_perm(struct obd_export *exp,
2709 const struct lu_fid *fid,
2710 struct obd_capa *oc, __u32 suppgid,
2711 struct ptlrpc_request **request)
2713 struct obd_device *obd = exp->exp_obd;
2714 struct lmv_obd *lmv = &obd->u.lmv;
2715 struct lmv_tgt_desc *tgt;
2719 rc = lmv_check_connect(obd);
2723 tgt = lmv_find_target(lmv, fid);
2725 RETURN(PTR_ERR(tgt));
2727 rc = md_get_remote_perm(tgt->ltd_exp, fid, oc, suppgid, request);
2731 static int lmv_renew_capa(struct obd_export *exp, struct obd_capa *oc,
2734 struct obd_device *obd = exp->exp_obd;
2735 struct lmv_obd *lmv = &obd->u.lmv;
2736 struct lmv_tgt_desc *tgt;
2740 rc = lmv_check_connect(obd);
2744 tgt = lmv_find_target(lmv, &oc->c_capa.lc_fid);
2746 RETURN(PTR_ERR(tgt));
2748 rc = md_renew_capa(tgt->ltd_exp, oc, cb);
2752 int lmv_unpack_capa(struct obd_export *exp, struct ptlrpc_request *req,
2753 const struct req_msg_field *field, struct obd_capa **oc)
2755 struct lmv_obd *lmv = &exp->exp_obd->u.lmv;
2757 return md_unpack_capa(lmv->tgts[0]->ltd_exp, req, field, oc);
2760 int lmv_intent_getattr_async(struct obd_export *exp,
2761 struct md_enqueue_info *minfo,
2762 struct ldlm_enqueue_info *einfo)
2764 struct md_op_data *op_data = &minfo->mi_data;
2765 struct obd_device *obd = exp->exp_obd;
2766 struct lmv_obd *lmv = &obd->u.lmv;
2767 struct lmv_tgt_desc *tgt = NULL;
2771 rc = lmv_check_connect(obd);
2775 tgt = lmv_find_target(lmv, &op_data->op_fid1);
2777 RETURN(PTR_ERR(tgt));
2779 rc = md_intent_getattr_async(tgt->ltd_exp, minfo, einfo);
2783 int lmv_revalidate_lock(struct obd_export *exp, struct lookup_intent *it,
2784 struct lu_fid *fid, __u64 *bits)
2786 struct obd_device *obd = exp->exp_obd;
2787 struct lmv_obd *lmv = &obd->u.lmv;
2788 struct lmv_tgt_desc *tgt;
2792 rc = lmv_check_connect(obd);
2796 tgt = lmv_find_target(lmv, fid);
2798 RETURN(PTR_ERR(tgt));
2800 rc = md_revalidate_lock(tgt->ltd_exp, it, fid, bits);
2805 * For lmv, only need to send request to master MDT, and the master MDT will
2806 * process with other slave MDTs. The only exception is Q_GETOQUOTA for which
2807 * we directly fetch data from the slave MDTs.
2809 int lmv_quotactl(struct obd_device *unused, struct obd_export *exp,
2810 struct obd_quotactl *oqctl)
2812 struct obd_device *obd = class_exp2obd(exp);
2813 struct lmv_obd *lmv = &obd->u.lmv;
2814 struct lmv_tgt_desc *tgt = lmv->tgts[0];
2817 __u64 curspace, curinodes;
2820 if (!lmv->desc.ld_tgt_count || !tgt->ltd_active) {
2821 CERROR("master lmv inactive\n");
2825 if (oqctl->qc_cmd != Q_GETOQUOTA) {
2826 rc = obd_quotactl(tgt->ltd_exp, oqctl);
2830 curspace = curinodes = 0;
2831 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
2835 if (tgt == NULL || tgt->ltd_exp == NULL || tgt->ltd_active == 0)
2837 if (!tgt->ltd_active) {
2838 CDEBUG(D_HA, "mdt %d is inactive.\n", i);
2842 err = obd_quotactl(tgt->ltd_exp, oqctl);
2844 CERROR("getquota on mdt %d failed. %d\n", i, err);
2848 curspace += oqctl->qc_dqblk.dqb_curspace;
2849 curinodes += oqctl->qc_dqblk.dqb_curinodes;
2852 oqctl->qc_dqblk.dqb_curspace = curspace;
2853 oqctl->qc_dqblk.dqb_curinodes = curinodes;
2858 int lmv_quotacheck(struct obd_device *unused, struct obd_export *exp,
2859 struct obd_quotactl *oqctl)
2861 struct obd_device *obd = class_exp2obd(exp);
2862 struct lmv_obd *lmv = &obd->u.lmv;
2863 struct lmv_tgt_desc *tgt;
2868 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
2871 if (tgt == NULL || tgt->ltd_exp == NULL || !tgt->ltd_active) {
2872 CERROR("lmv idx %d inactive\n", i);
2876 err = obd_quotacheck(tgt->ltd_exp, oqctl);
2884 struct obd_ops lmv_obd_ops = {
2885 .o_owner = THIS_MODULE,
2886 .o_setup = lmv_setup,
2887 .o_cleanup = lmv_cleanup,
2888 .o_precleanup = lmv_precleanup,
2889 .o_process_config = lmv_process_config,
2890 .o_connect = lmv_connect,
2891 .o_disconnect = lmv_disconnect,
2892 .o_statfs = lmv_statfs,
2893 .o_get_info = lmv_get_info,
2894 .o_set_info_async = lmv_set_info_async,
2895 .o_packmd = lmv_packmd,
2896 .o_unpackmd = lmv_unpackmd,
2897 .o_notify = lmv_notify,
2898 .o_get_uuid = lmv_get_uuid,
2899 .o_iocontrol = lmv_iocontrol,
2900 .o_quotacheck = lmv_quotacheck,
2901 .o_quotactl = lmv_quotactl
2904 struct md_ops lmv_md_ops = {
2905 .m_getstatus = lmv_getstatus,
2906 .m_null_inode = lmv_null_inode,
2907 .m_find_cbdata = lmv_find_cbdata,
2908 .m_close = lmv_close,
2909 .m_create = lmv_create,
2910 .m_done_writing = lmv_done_writing,
2911 .m_enqueue = lmv_enqueue,
2912 .m_getattr = lmv_getattr,
2913 .m_getxattr = lmv_getxattr,
2914 .m_getattr_name = lmv_getattr_name,
2915 .m_intent_lock = lmv_intent_lock,
2917 .m_rename = lmv_rename,
2918 .m_setattr = lmv_setattr,
2919 .m_setxattr = lmv_setxattr,
2921 .m_readpage = lmv_readpage,
2922 .m_unlink = lmv_unlink,
2923 .m_init_ea_size = lmv_init_ea_size,
2924 .m_cancel_unused = lmv_cancel_unused,
2925 .m_set_lock_data = lmv_set_lock_data,
2926 .m_lock_match = lmv_lock_match,
2927 .m_get_lustre_md = lmv_get_lustre_md,
2928 .m_free_lustre_md = lmv_free_lustre_md,
2929 .m_set_open_replay_data = lmv_set_open_replay_data,
2930 .m_clear_open_replay_data = lmv_clear_open_replay_data,
2931 .m_renew_capa = lmv_renew_capa,
2932 .m_unpack_capa = lmv_unpack_capa,
2933 .m_get_remote_perm = lmv_get_remote_perm,
2934 .m_intent_getattr_async = lmv_intent_getattr_async,
2935 .m_revalidate_lock = lmv_revalidate_lock
2938 int __init lmv_init(void)
2940 struct lprocfs_static_vars lvars;
2943 lprocfs_lmv_init_vars(&lvars);
2945 rc = class_register_type(&lmv_obd_ops, &lmv_md_ops,
2946 lvars.module_vars, LUSTRE_LMV_NAME, NULL);
2951 static void lmv_exit(void)
2953 class_unregister_type(LUSTRE_LMV_NAME);
2956 MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
2957 MODULE_DESCRIPTION("Lustre Logical Metadata Volume OBD driver");
2958 MODULE_LICENSE("GPL");
2960 module_init(lmv_init);
2961 module_exit(lmv_exit);