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;
137 struct lmv_tgt_desc *tgt = lmv->tgts[0];
139 return (tgt == NULL) ? NULL : obd_get_uuid(tgt->ltd_exp);
142 static int lmv_notify(struct obd_device *obd, struct obd_device *watched,
143 enum obd_notify_event ev, void *data)
145 struct obd_connect_data *conn_data;
146 struct lmv_obd *lmv = &obd->u.lmv;
147 struct obd_uuid *uuid;
151 if (strcmp(watched->obd_type->typ_name, LUSTRE_MDC_NAME)) {
152 CERROR("unexpected notification of %s %s!\n",
153 watched->obd_type->typ_name,
158 uuid = &watched->u.cli.cl_target_uuid;
159 if (ev == OBD_NOTIFY_ACTIVE || ev == OBD_NOTIFY_INACTIVE) {
161 * Set MDC as active before notifying the observer, so the
162 * observer can use the MDC normally.
164 rc = lmv_set_mdc_active(lmv, uuid,
165 ev == OBD_NOTIFY_ACTIVE);
167 CERROR("%sactivation of %s failed: %d\n",
168 ev == OBD_NOTIFY_ACTIVE ? "" : "de",
172 } else if (ev == OBD_NOTIFY_OCD) {
173 conn_data = &watched->u.cli.cl_import->imp_connect_data;
175 * XXX: Make sure that ocd_connect_flags from all targets are
176 * the same. Otherwise one of MDTs runs wrong version or
177 * something like this. --umka
179 obd->obd_self_export->exp_connect_data = *conn_data;
182 else if (ev == OBD_NOTIFY_DISCON) {
184 * For disconnect event, flush fld cache for failout MDS case.
186 fld_client_flush(&lmv->lmv_fld);
190 * Pass the notification up the chain.
192 if (obd->obd_observer)
193 rc = obd_notify(obd->obd_observer, watched, ev, data);
199 * This is fake connect function. Its purpose is to initialize lmv and say
200 * caller that everything is okay. Real connection will be performed later.
202 static int lmv_connect(const struct lu_env *env,
203 struct obd_export **exp, struct obd_device *obd,
204 struct obd_uuid *cluuid, struct obd_connect_data *data,
208 struct proc_dir_entry *lmv_proc_dir;
210 struct lmv_obd *lmv = &obd->u.lmv;
211 struct lustre_handle conn = { 0 };
216 * We don't want to actually do the underlying connections more than
217 * once, so keep track.
220 if (lmv->refcount > 1) {
225 rc = class_connect(&conn, obd, cluuid);
227 CERROR("class_connection() returned %d\n", rc);
231 *exp = class_conn2export(&conn);
232 class_export_get(*exp);
236 lmv->cluuid = *cluuid;
239 lmv->conn_data = *data;
242 if (obd->obd_proc_private != NULL) {
243 lmv_proc_dir = obd->obd_proc_private;
245 lmv_proc_dir = lprocfs_seq_register("target_obds",
248 if (IS_ERR(lmv_proc_dir)) {
249 CERROR("could not register /proc/fs/lustre/%s/%s/target_obds.",
250 obd->obd_type->typ_name, obd->obd_name);
253 obd->obd_proc_private = lmv_proc_dir;
258 * All real clients should perform actual connection right away, because
259 * it is possible, that LMV will not have opportunity to connect targets
260 * and MDC stuff will be called directly, for instance while reading
261 * ../mdc/../kbytesfree procfs file, etc.
263 if (data != NULL && (data->ocd_connect_flags & OBD_CONNECT_REAL))
264 rc = lmv_check_connect(obd);
267 if (rc && lmv_proc_dir) {
268 lprocfs_remove(&lmv_proc_dir);
269 obd->obd_proc_private = NULL;
275 static void lmv_set_timeouts(struct obd_device *obd)
281 if (lmv->server_timeout == 0)
284 if (lmv->connected == 0)
287 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
288 struct lmv_tgt_desc *tgt = lmv->tgts[i];
290 if (tgt == NULL || tgt->ltd_exp == NULL || !tgt->ltd_active)
293 obd_set_info_async(NULL, tgt->ltd_exp, sizeof(KEY_INTERMDS),
294 KEY_INTERMDS, 0, NULL, NULL);
298 static int lmv_init_ea_size(struct obd_export *exp, int easize,
299 int def_easize, int cookiesize)
301 struct obd_device *obd = exp->exp_obd;
302 struct lmv_obd *lmv = &obd->u.lmv;
308 if (lmv->max_easize < easize) {
309 lmv->max_easize = easize;
312 if (lmv->max_def_easize < def_easize) {
313 lmv->max_def_easize = def_easize;
316 if (lmv->max_cookiesize < cookiesize) {
317 lmv->max_cookiesize = cookiesize;
323 if (lmv->connected == 0)
326 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
327 struct lmv_tgt_desc *tgt = lmv->tgts[i];
329 if (tgt == NULL || tgt->ltd_exp == NULL || !tgt->ltd_active) {
330 CWARN("%s: NULL export for %d\n", obd->obd_name, i);
334 rc = md_init_ea_size(tgt->ltd_exp, easize, def_easize,
337 CERROR("%s: obd_init_ea_size() failed on MDT target %d:"
338 " rc = %d.\n", obd->obd_name, i, rc);
345 #define MAX_STRING_SIZE 128
347 int lmv_connect_mdc(struct obd_device *obd, struct lmv_tgt_desc *tgt)
350 struct proc_dir_entry *lmv_proc_dir;
352 struct lmv_obd *lmv = &obd->u.lmv;
353 struct obd_uuid *cluuid = &lmv->cluuid;
354 struct obd_uuid lmv_mdc_uuid = { "LMV_MDC_UUID" };
355 struct obd_device *mdc_obd;
356 struct obd_export *mdc_exp;
357 struct lu_fld_target target;
361 mdc_obd = class_find_client_obd(&tgt->ltd_uuid, LUSTRE_MDC_NAME,
364 CERROR("target %s not attached\n", tgt->ltd_uuid.uuid);
368 CDEBUG(D_CONFIG, "connect to %s(%s) - %s, %s FOR %s\n",
369 mdc_obd->obd_name, mdc_obd->obd_uuid.uuid,
370 tgt->ltd_uuid.uuid, obd->obd_uuid.uuid,
373 if (!mdc_obd->obd_set_up) {
374 CERROR("target %s is not set up\n", tgt->ltd_uuid.uuid);
378 rc = obd_connect(NULL, &mdc_exp, mdc_obd, &lmv_mdc_uuid,
379 &lmv->conn_data, NULL);
381 CERROR("target %s connect error %d\n", tgt->ltd_uuid.uuid, rc);
386 * Init fid sequence client for this mdc and add new fld target.
388 rc = obd_fid_init(mdc_obd, mdc_exp, LUSTRE_SEQ_METADATA);
392 target.ft_srv = NULL;
393 target.ft_exp = mdc_exp;
394 target.ft_idx = tgt->ltd_idx;
396 fld_client_add_target(&lmv->lmv_fld, &target);
398 rc = obd_register_observer(mdc_obd, obd);
400 obd_disconnect(mdc_exp);
401 CERROR("target %s register_observer error %d\n",
402 tgt->ltd_uuid.uuid, rc);
406 if (obd->obd_observer) {
408 * Tell the observer about the new target.
410 rc = obd_notify(obd->obd_observer, mdc_exp->exp_obd,
412 (void *)(tgt - lmv->tgts[0]));
414 obd_disconnect(mdc_exp);
420 tgt->ltd_exp = mdc_exp;
421 lmv->desc.ld_active_tgt_count++;
423 md_init_ea_size(tgt->ltd_exp, lmv->max_easize,
424 lmv->max_def_easize, lmv->max_cookiesize);
426 CDEBUG(D_CONFIG, "Connected to %s(%s) successfully (%d)\n",
427 mdc_obd->obd_name, mdc_obd->obd_uuid.uuid,
428 cfs_atomic_read(&obd->obd_refcount));
431 lmv_proc_dir = obd->obd_proc_private;
433 struct proc_dir_entry *mdc_symlink;
435 LASSERT(mdc_obd->obd_type != NULL);
436 LASSERT(mdc_obd->obd_type->typ_name != NULL);
437 mdc_symlink = lprocfs_add_symlink(mdc_obd->obd_name,
440 mdc_obd->obd_type->typ_name,
442 if (mdc_symlink == NULL) {
443 CERROR("Could not register LMV target "
444 "/proc/fs/lustre/%s/%s/target_obds/%s.",
445 obd->obd_type->typ_name, obd->obd_name,
447 lprocfs_remove(&lmv_proc_dir);
448 obd->obd_proc_private = NULL;
455 static void lmv_del_target(struct lmv_obd *lmv, int index)
457 if (lmv->tgts[index] == NULL)
460 OBD_FREE_PTR(lmv->tgts[index]);
461 lmv->tgts[index] = NULL;
465 static int lmv_add_target(struct obd_device *obd, struct obd_uuid *uuidp,
466 __u32 index, int gen)
468 struct lmv_obd *lmv = &obd->u.lmv;
469 struct lmv_tgt_desc *tgt;
473 CDEBUG(D_CONFIG, "Target uuid: %s. index %d\n", uuidp->uuid, index);
477 if (lmv->desc.ld_tgt_count == 0) {
478 struct obd_device *mdc_obd;
480 mdc_obd = class_find_client_obd(uuidp, LUSTRE_MDC_NAME,
483 lmv_init_unlock(lmv);
484 CERROR("%s: Target %s not attached: rc = %d\n",
485 obd->obd_name, uuidp->uuid, -EINVAL);
490 if ((index < lmv->tgts_size) && (lmv->tgts[index] != NULL)) {
491 tgt = lmv->tgts[index];
492 CERROR("%s: UUID %s already assigned at LOV target index %d:"
493 " rc = %d\n", obd->obd_name,
494 obd_uuid2str(&tgt->ltd_uuid), index, -EEXIST);
495 lmv_init_unlock(lmv);
499 if (index >= lmv->tgts_size) {
500 /* We need to reallocate the lmv target array. */
501 struct lmv_tgt_desc **newtgts, **old = NULL;
505 while (newsize < index + 1)
506 newsize = newsize << 1;
507 OBD_ALLOC(newtgts, sizeof(*newtgts) * newsize);
508 if (newtgts == NULL) {
509 lmv_init_unlock(lmv);
513 if (lmv->tgts_size) {
514 memcpy(newtgts, lmv->tgts,
515 sizeof(*newtgts) * lmv->tgts_size);
517 oldsize = lmv->tgts_size;
521 lmv->tgts_size = newsize;
524 OBD_FREE(old, sizeof(*old) * oldsize);
526 CDEBUG(D_CONFIG, "tgts: %p size: %d\n", lmv->tgts,
532 lmv_init_unlock(lmv);
536 mutex_init(&tgt->ltd_fid_mutex);
537 tgt->ltd_idx = index;
538 tgt->ltd_uuid = *uuidp;
540 lmv->tgts[index] = tgt;
541 if (index >= lmv->desc.ld_tgt_count)
542 lmv->desc.ld_tgt_count = index + 1;
544 if (lmv->connected) {
545 rc = lmv_connect_mdc(obd, tgt);
547 spin_lock(&lmv->lmv_lock);
548 lmv->desc.ld_tgt_count--;
549 memset(tgt, 0, sizeof(*tgt));
550 spin_unlock(&lmv->lmv_lock);
552 int easize = sizeof(struct lmv_stripe_md) +
553 lmv->desc.ld_tgt_count *
554 sizeof(struct lu_fid);
555 lmv_init_ea_size(obd->obd_self_export, easize, 0, 0);
559 lmv_init_unlock(lmv);
563 int lmv_check_connect(struct obd_device *obd)
565 struct lmv_obd *lmv = &obd->u.lmv;
566 struct lmv_tgt_desc *tgt;
576 if (lmv->connected) {
577 lmv_init_unlock(lmv);
581 if (lmv->desc.ld_tgt_count == 0) {
582 lmv_init_unlock(lmv);
583 CERROR("%s: no targets configured.\n", obd->obd_name);
587 LASSERT(lmv->tgts != NULL);
589 if (lmv->tgts[0] == NULL) {
590 lmv_init_unlock(lmv);
591 CERROR("%s: no target configured for index 0.\n",
596 CDEBUG(D_CONFIG, "Time to connect %s to %s\n",
597 lmv->cluuid.uuid, obd->obd_name);
599 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
603 rc = lmv_connect_mdc(obd, tgt);
608 lmv_set_timeouts(obd);
609 class_export_put(lmv->exp);
611 easize = lmv_get_easize(lmv);
612 lmv_init_ea_size(obd->obd_self_export, easize, 0, 0);
613 lmv_init_unlock(lmv);
624 --lmv->desc.ld_active_tgt_count;
625 rc2 = obd_disconnect(tgt->ltd_exp);
627 CERROR("LMV target %s disconnect on "
628 "MDC idx %d: error %d\n",
629 tgt->ltd_uuid.uuid, i, rc2);
633 class_disconnect(lmv->exp);
634 lmv_init_unlock(lmv);
638 static int lmv_disconnect_mdc(struct obd_device *obd, struct lmv_tgt_desc *tgt)
641 struct proc_dir_entry *lmv_proc_dir;
643 struct lmv_obd *lmv = &obd->u.lmv;
644 struct obd_device *mdc_obd;
648 LASSERT(tgt != NULL);
649 LASSERT(obd != NULL);
651 mdc_obd = class_exp2obd(tgt->ltd_exp);
654 mdc_obd->obd_force = obd->obd_force;
655 mdc_obd->obd_fail = obd->obd_fail;
656 mdc_obd->obd_no_recov = obd->obd_no_recov;
660 lmv_proc_dir = obd->obd_proc_private;
662 lprocfs_remove_proc_entry(mdc_obd->obd_name, lmv_proc_dir);
664 rc = obd_fid_fini(tgt->ltd_exp->exp_obd);
666 CERROR("Can't finanize fids factory\n");
668 CDEBUG(D_INFO, "Disconnected from %s(%s) successfully\n",
669 tgt->ltd_exp->exp_obd->obd_name,
670 tgt->ltd_exp->exp_obd->obd_uuid.uuid);
672 obd_register_observer(tgt->ltd_exp->exp_obd, NULL);
673 rc = obd_disconnect(tgt->ltd_exp);
675 if (tgt->ltd_active) {
676 CERROR("Target %s disconnect error %d\n",
677 tgt->ltd_uuid.uuid, rc);
681 lmv_activate_target(lmv, tgt, 0);
686 static int lmv_disconnect(struct obd_export *exp)
688 struct obd_device *obd = class_exp2obd(exp);
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 if (obd->obd_proc_private)
713 lprocfs_remove((struct proc_dir_entry **)&obd->obd_proc_private);
715 CERROR("/proc/fs/lustre/%s/%s/target_obds missing\n",
716 obd->obd_type->typ_name, obd->obd_name);
721 * This is the case when no real connection is established by
722 * lmv_check_connect().
725 class_export_put(exp);
726 rc = class_disconnect(exp);
727 if (lmv->refcount == 0)
732 static int lmv_fid2path(struct obd_export *exp, int len, void *karg, void *uarg)
734 struct obd_device *obddev = class_exp2obd(exp);
735 struct lmv_obd *lmv = &obddev->u.lmv;
736 struct getinfo_fid2path *gf;
737 struct lmv_tgt_desc *tgt;
738 struct getinfo_fid2path *remote_gf = NULL;
739 int remote_gf_size = 0;
742 gf = (struct getinfo_fid2path *)karg;
743 tgt = lmv_find_target(lmv, &gf->gf_fid);
745 RETURN(PTR_ERR(tgt));
748 rc = obd_iocontrol(OBD_IOC_FID2PATH, tgt->ltd_exp, len, gf, uarg);
749 if (rc != 0 && rc != -EREMOTE)
750 GOTO(out_fid2path, rc);
752 /* If remote_gf != NULL, it means just building the
753 * path on the remote MDT, copy this path segement to gf */
754 if (remote_gf != NULL) {
755 struct getinfo_fid2path *ori_gf;
758 ori_gf = (struct getinfo_fid2path *)karg;
759 if (strlen(ori_gf->gf_path) +
760 strlen(gf->gf_path) > ori_gf->gf_pathlen)
761 GOTO(out_fid2path, rc = -EOVERFLOW);
763 ptr = ori_gf->gf_path;
765 memmove(ptr + strlen(gf->gf_path) + 1, ptr,
766 strlen(ori_gf->gf_path));
768 strncpy(ptr, gf->gf_path, strlen(gf->gf_path));
769 ptr += strlen(gf->gf_path);
773 CDEBUG(D_INFO, "%s: get path %s "DFID" rec: "LPU64" ln: %u\n",
774 tgt->ltd_exp->exp_obd->obd_name,
775 gf->gf_path, PFID(&gf->gf_fid), gf->gf_recno,
779 GOTO(out_fid2path, rc);
781 /* sigh, has to go to another MDT to do path building further */
782 if (remote_gf == NULL) {
783 remote_gf_size = sizeof(*remote_gf) + PATH_MAX;
784 OBD_ALLOC(remote_gf, remote_gf_size);
785 if (remote_gf == NULL)
786 GOTO(out_fid2path, rc = -ENOMEM);
787 remote_gf->gf_pathlen = PATH_MAX;
790 if (!fid_is_sane(&gf->gf_fid)) {
791 CERROR("%s: invalid FID "DFID": rc = %d\n",
792 tgt->ltd_exp->exp_obd->obd_name,
793 PFID(&gf->gf_fid), -EINVAL);
794 GOTO(out_fid2path, rc = -EINVAL);
797 tgt = lmv_find_target(lmv, &gf->gf_fid);
799 GOTO(out_fid2path, rc = -EINVAL);
801 remote_gf->gf_fid = gf->gf_fid;
802 remote_gf->gf_recno = -1;
803 remote_gf->gf_linkno = -1;
804 memset(remote_gf->gf_path, 0, remote_gf->gf_pathlen);
806 goto repeat_fid2path;
809 if (remote_gf != NULL)
810 OBD_FREE(remote_gf, remote_gf_size);
814 static int lmv_hsm_req_count(struct lmv_obd *lmv,
815 const struct hsm_user_request *hur,
816 const struct lmv_tgt_desc *tgt_mds)
820 struct lmv_tgt_desc *curr_tgt;
822 /* count how many requests must be sent to the given target */
823 for (i = 0; i < hur->hur_request.hr_itemcount; i++) {
824 curr_tgt = lmv_find_target(lmv, &hur->hur_user_item[i].hui_fid);
825 if (obd_uuid_equals(&curr_tgt->ltd_uuid, &tgt_mds->ltd_uuid))
831 static void lmv_hsm_req_build(struct lmv_obd *lmv,
832 struct hsm_user_request *hur_in,
833 const struct lmv_tgt_desc *tgt_mds,
834 struct hsm_user_request *hur_out)
837 struct lmv_tgt_desc *curr_tgt;
839 /* build the hsm_user_request for the given target */
840 hur_out->hur_request = hur_in->hur_request;
842 for (i = 0; i < hur_in->hur_request.hr_itemcount; i++) {
843 curr_tgt = lmv_find_target(lmv,
844 &hur_in->hur_user_item[i].hui_fid);
845 if (obd_uuid_equals(&curr_tgt->ltd_uuid, &tgt_mds->ltd_uuid)) {
846 hur_out->hur_user_item[nr_out] =
847 hur_in->hur_user_item[i];
851 hur_out->hur_request.hr_itemcount = nr_out;
852 memcpy(hur_data(hur_out), hur_data(hur_in),
853 hur_in->hur_request.hr_data_len);
856 static int lmv_hsm_ct_unregister(struct lmv_obd *lmv, unsigned int cmd, int len,
857 struct lustre_kernelcomm *lk, void *uarg)
861 struct kkuc_ct_data *kcd = NULL;
864 /* unregister request (call from llapi_hsm_copytool_fini) */
865 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
866 struct lmv_tgt_desc *tgt = lmv->tgts[i];
868 if (tgt == NULL || tgt->ltd_exp == NULL)
870 /* best effort: try to clean as much as possible
871 * (continue on error) */
872 obd_iocontrol(cmd, tgt->ltd_exp, len, lk, uarg);
875 /* Whatever the result, remove copytool from kuc groups.
876 * Unreached coordinators will get EPIPE on next requests
877 * and will unregister automatically.
879 rc = libcfs_kkuc_group_rem(lk->lk_uid, lk->lk_group, (void **)&kcd);
886 static int lmv_hsm_ct_register(struct lmv_obd *lmv, unsigned int cmd, int len,
887 struct lustre_kernelcomm *lk, void *uarg)
892 bool any_set = false;
893 struct kkuc_ct_data *kcd;
896 /* All or nothing: try to register to all MDS.
897 * In case of failure, unregister from previous MDS,
898 * except if it because of inactive target. */
899 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
900 struct lmv_tgt_desc *tgt = lmv->tgts[i];
902 if (tgt == NULL || tgt->ltd_exp == NULL)
904 err = obd_iocontrol(cmd, tgt->ltd_exp, len, lk, uarg);
906 if (tgt->ltd_active) {
907 /* permanent error */
908 CERROR("%s: iocontrol MDC %s on MDT"
909 " idx %d cmd %x: err = %d\n",
910 class_exp2obd(lmv->exp)->obd_name,
911 tgt->ltd_uuid.uuid, i, cmd, err);
913 lk->lk_flags |= LK_FLG_STOP;
914 /* unregister from previous MDS */
915 for (j = 0; j < i; j++) {
917 if (tgt == NULL || tgt->ltd_exp == NULL)
919 obd_iocontrol(cmd, tgt->ltd_exp, len,
924 /* else: transient error.
925 * kuc will register to the missing MDT
933 /* no registration done: return error */
936 /* at least one registration done, with no failure */
937 filp = fget(lk->lk_wfd);
946 kcd->kcd_magic = KKUC_CT_DATA_MAGIC;
947 kcd->kcd_uuid = lmv->cluuid;
948 kcd->kcd_archive = lk->lk_data;
950 rc = libcfs_kkuc_group_add(filp, lk->lk_uid, lk->lk_group, kcd);
963 static int lmv_iocontrol(unsigned int cmd, struct obd_export *exp,
964 int len, void *karg, void *uarg)
966 struct obd_device *obddev = class_exp2obd(exp);
967 struct lmv_obd *lmv = &obddev->u.lmv;
968 struct lmv_tgt_desc *tgt = NULL;
972 __u32 count = lmv->desc.ld_tgt_count;
979 case IOC_OBD_STATFS: {
980 struct obd_ioctl_data *data = karg;
981 struct obd_device *mdc_obd;
982 struct obd_statfs stat_buf = {0};
985 memcpy(&index, data->ioc_inlbuf2, sizeof(__u32));
986 if ((index >= count))
989 tgt = lmv->tgts[index];
990 if (tgt == NULL || !tgt->ltd_active)
993 mdc_obd = class_exp2obd(tgt->ltd_exp);
998 if (copy_to_user(data->ioc_pbuf2, obd2cli_tgt(mdc_obd),
999 min((int) data->ioc_plen2,
1000 (int) sizeof(struct obd_uuid))))
1003 rc = obd_statfs(NULL, tgt->ltd_exp, &stat_buf,
1004 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
1008 if (copy_to_user(data->ioc_pbuf1, &stat_buf,
1009 min((int) data->ioc_plen1,
1010 (int) sizeof(stat_buf))))
1014 case OBD_IOC_QUOTACTL: {
1015 struct if_quotactl *qctl = karg;
1016 struct obd_quotactl *oqctl;
1018 if (qctl->qc_valid == QC_MDTIDX) {
1019 if (count <= qctl->qc_idx)
1022 tgt = lmv->tgts[qctl->qc_idx];
1023 if (tgt == NULL || tgt->ltd_exp == NULL)
1025 } else if (qctl->qc_valid == QC_UUID) {
1026 for (i = 0; i < count; i++) {
1030 if (!obd_uuid_equals(&tgt->ltd_uuid,
1034 if (tgt->ltd_exp == NULL)
1046 LASSERT(tgt != NULL && tgt->ltd_exp != NULL);
1047 OBD_ALLOC_PTR(oqctl);
1051 QCTL_COPY(oqctl, qctl);
1052 rc = obd_quotactl(tgt->ltd_exp, oqctl);
1054 QCTL_COPY(qctl, oqctl);
1055 qctl->qc_valid = QC_MDTIDX;
1056 qctl->obd_uuid = tgt->ltd_uuid;
1058 OBD_FREE_PTR(oqctl);
1061 case OBD_IOC_CHANGELOG_SEND:
1062 case OBD_IOC_CHANGELOG_CLEAR: {
1063 struct ioc_changelog *icc = karg;
1065 if (icc->icc_mdtindex >= count)
1068 tgt = lmv->tgts[icc->icc_mdtindex];
1069 if (tgt == NULL || tgt->ltd_exp == NULL || !tgt->ltd_active)
1071 rc = obd_iocontrol(cmd, tgt->ltd_exp, sizeof(*icc), icc, NULL);
1074 case LL_IOC_GET_CONNECT_FLAGS: {
1076 if (tgt == NULL || tgt->ltd_exp == NULL)
1078 rc = obd_iocontrol(cmd, tgt->ltd_exp, len, karg, uarg);
1081 case OBD_IOC_FID2PATH: {
1082 rc = lmv_fid2path(exp, len, karg, uarg);
1085 case LL_IOC_HSM_STATE_GET:
1086 case LL_IOC_HSM_STATE_SET:
1087 case LL_IOC_HSM_ACTION: {
1088 struct md_op_data *op_data = karg;
1090 tgt = lmv_find_target(lmv, &op_data->op_fid1);
1092 RETURN(PTR_ERR(tgt));
1094 if (tgt->ltd_exp == NULL)
1097 rc = obd_iocontrol(cmd, tgt->ltd_exp, len, karg, uarg);
1100 case LL_IOC_HSM_PROGRESS: {
1101 const struct hsm_progress_kernel *hpk = karg;
1103 tgt = lmv_find_target(lmv, &hpk->hpk_fid);
1105 RETURN(PTR_ERR(tgt));
1106 rc = obd_iocontrol(cmd, tgt->ltd_exp, len, karg, uarg);
1109 case LL_IOC_HSM_REQUEST: {
1110 struct hsm_user_request *hur = karg;
1111 unsigned int reqcount = hur->hur_request.hr_itemcount;
1116 /* if the request is about a single fid
1117 * or if there is a single MDS, no need to split
1119 if (reqcount == 1 || count == 1) {
1120 tgt = lmv_find_target(lmv,
1121 &hur->hur_user_item[0].hui_fid);
1123 RETURN(PTR_ERR(tgt));
1124 rc = obd_iocontrol(cmd, tgt->ltd_exp, len, karg, uarg);
1126 /* split fid list to their respective MDS */
1127 for (i = 0; i < count; i++) {
1128 unsigned int nr, reqlen;
1130 struct hsm_user_request *req;
1133 if (tgt == NULL || tgt->ltd_exp == NULL)
1136 nr = lmv_hsm_req_count(lmv, hur, tgt);
1137 if (nr == 0) /* nothing for this MDS */
1140 /* build a request with fids for this MDS */
1141 reqlen = offsetof(typeof(*hur),
1143 + hur->hur_request.hr_data_len;
1144 OBD_ALLOC_LARGE(req, reqlen);
1148 lmv_hsm_req_build(lmv, hur, tgt, req);
1150 rc1 = obd_iocontrol(cmd, tgt->ltd_exp, reqlen,
1152 if (rc1 != 0 && rc == 0)
1154 OBD_FREE_LARGE(req, reqlen);
1159 case LL_IOC_LOV_SWAP_LAYOUTS: {
1160 struct md_op_data *op_data = karg;
1161 struct lmv_tgt_desc *tgt1, *tgt2;
1163 tgt1 = lmv_find_target(lmv, &op_data->op_fid1);
1165 RETURN(PTR_ERR(tgt1));
1167 tgt2 = lmv_find_target(lmv, &op_data->op_fid2);
1169 RETURN(PTR_ERR(tgt2));
1171 if ((tgt1->ltd_exp == NULL) || (tgt2->ltd_exp == NULL))
1174 /* only files on same MDT can have their layouts swapped */
1175 if (tgt1->ltd_idx != tgt2->ltd_idx)
1178 rc = obd_iocontrol(cmd, tgt1->ltd_exp, len, karg, uarg);
1181 case LL_IOC_HSM_CT_START: {
1182 struct lustre_kernelcomm *lk = karg;
1183 if (lk->lk_flags & LK_FLG_STOP)
1184 rc = lmv_hsm_ct_unregister(lmv, cmd, len, lk, uarg);
1186 rc = lmv_hsm_ct_register(lmv, cmd, len, lk, uarg);
1190 for (i = 0; i < count; i++) {
1191 struct obd_device *mdc_obd;
1195 if (tgt == NULL || tgt->ltd_exp == NULL)
1197 /* ll_umount_begin() sets force flag but for lmv, not
1198 * mdc. Let's pass it through */
1199 mdc_obd = class_exp2obd(tgt->ltd_exp);
1200 mdc_obd->obd_force = obddev->obd_force;
1201 err = obd_iocontrol(cmd, tgt->ltd_exp, len, karg, uarg);
1202 if (err == -ENODATA && cmd == OBD_IOC_POLL_QUOTACHECK) {
1205 if (tgt->ltd_active) {
1206 CERROR("error: iocontrol MDC %s on MDT"
1207 " idx %d cmd %x: err = %d\n",
1208 tgt->ltd_uuid.uuid, i, cmd, err);
1222 static int lmv_all_chars_policy(int count, const char *name,
1233 static int lmv_nid_policy(struct lmv_obd *lmv)
1235 struct obd_import *imp;
1239 * XXX: To get nid we assume that underlying obd device is mdc.
1241 imp = class_exp2cliimp(lmv->tgts[0].ltd_exp);
1242 id = imp->imp_connection->c_self ^ (imp->imp_connection->c_self >> 32);
1243 return id % lmv->desc.ld_tgt_count;
1246 static int lmv_choose_mds(struct lmv_obd *lmv, struct md_op_data *op_data,
1247 placement_policy_t placement)
1249 switch (placement) {
1250 case PLACEMENT_CHAR_POLICY:
1251 return lmv_all_chars_policy(lmv->desc.ld_tgt_count,
1253 op_data->op_namelen);
1254 case PLACEMENT_NID_POLICY:
1255 return lmv_nid_policy(lmv);
1261 CERROR("Unsupported placement policy %x\n", placement);
1267 * This is _inode_ placement policy function (not name).
1269 static int lmv_placement_policy(struct obd_device *obd,
1270 struct md_op_data *op_data,
1273 struct lmv_obd *lmv = &obd->u.lmv;
1276 LASSERT(mds != NULL);
1278 if (lmv->desc.ld_tgt_count == 1) {
1284 * If stripe_offset is provided during setdirstripe
1285 * (setdirstripe -i xx), xx MDS will be choosen.
1287 if (op_data->op_cli_flags & CLI_SET_MEA) {
1288 struct lmv_user_md *lum;
1290 lum = (struct lmv_user_md *)op_data->op_data;
1291 if (lum->lum_type == LMV_STRIPE_TYPE &&
1292 lum->lum_stripe_offset != -1) {
1293 if (lum->lum_stripe_offset >= lmv->desc.ld_tgt_count) {
1294 CERROR("%s: Stripe_offset %d > MDT count %d:"
1295 " rc = %d\n", obd->obd_name,
1296 lum->lum_stripe_offset,
1297 lmv->desc.ld_tgt_count, -ERANGE);
1300 *mds = lum->lum_stripe_offset;
1305 /* Allocate new fid on target according to operation type and parent
1307 *mds = op_data->op_mds;
1311 int __lmv_fid_alloc(struct lmv_obd *lmv, struct lu_fid *fid,
1314 struct lmv_tgt_desc *tgt;
1318 tgt = lmv_get_target(lmv, mds);
1320 RETURN(PTR_ERR(tgt));
1323 * New seq alloc and FLD setup should be atomic. Otherwise we may find
1324 * on server that seq in new allocated fid is not yet known.
1326 mutex_lock(&tgt->ltd_fid_mutex);
1328 if (tgt->ltd_active == 0 || tgt->ltd_exp == NULL)
1329 GOTO(out, rc = -ENODEV);
1332 * Asking underlaying tgt layer to allocate new fid.
1334 rc = obd_fid_alloc(tgt->ltd_exp, fid, NULL);
1336 LASSERT(fid_is_sane(fid));
1342 mutex_unlock(&tgt->ltd_fid_mutex);
1346 int lmv_fid_alloc(struct obd_export *exp, struct lu_fid *fid,
1347 struct md_op_data *op_data)
1349 struct obd_device *obd = class_exp2obd(exp);
1350 struct lmv_obd *lmv = &obd->u.lmv;
1355 LASSERT(op_data != NULL);
1356 LASSERT(fid != NULL);
1358 rc = lmv_placement_policy(obd, op_data, &mds);
1360 CERROR("Can't get target for allocating fid, "
1365 rc = __lmv_fid_alloc(lmv, fid, mds);
1367 CERROR("Can't alloc new fid, rc %d\n", rc);
1374 static int lmv_setup(struct obd_device *obd, struct lustre_cfg *lcfg)
1376 struct lmv_obd *lmv = &obd->u.lmv;
1377 struct lmv_desc *desc;
1381 if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1) {
1382 CERROR("LMV setup requires a descriptor\n");
1386 desc = (struct lmv_desc *)lustre_cfg_buf(lcfg, 1);
1387 if (sizeof(*desc) > LUSTRE_CFG_BUFLEN(lcfg, 1)) {
1388 CERROR("Lmv descriptor size wrong: %d > %d\n",
1389 (int)sizeof(*desc), LUSTRE_CFG_BUFLEN(lcfg, 1));
1393 OBD_ALLOC(lmv->tgts, sizeof(*lmv->tgts) * 32);
1394 if (lmv->tgts == NULL)
1396 lmv->tgts_size = 32;
1398 obd_str2uuid(&lmv->desc.ld_uuid, desc->ld_uuid.uuid);
1399 lmv->desc.ld_tgt_count = 0;
1400 lmv->desc.ld_active_tgt_count = 0;
1401 lmv->max_cookiesize = 0;
1402 lmv->max_def_easize = 0;
1403 lmv->max_easize = 0;
1404 lmv->lmv_placement = PLACEMENT_CHAR_POLICY;
1406 spin_lock_init(&lmv->lmv_lock);
1407 mutex_init(&lmv->init_mutex);
1410 obd->obd_vars = lprocfs_lmv_obd_vars;
1411 lprocfs_seq_obd_setup(obd);
1412 lprocfs_alloc_md_stats(obd, 0);
1413 rc = lprocfs_seq_create(obd->obd_proc_entry, "target_obd",
1414 0444, &lmv_proc_target_fops, obd);
1416 CWARN("%s: error adding LMV target_obd file: rc = %d\n",
1419 rc = fld_client_init(&lmv->lmv_fld, obd->obd_name,
1420 LUSTRE_CLI_FLD_HASH_DHT);
1422 CERROR("Can't init FLD, err %d\n", rc);
1432 static int lmv_cleanup(struct obd_device *obd)
1434 struct lmv_obd *lmv = &obd->u.lmv;
1437 fld_client_fini(&lmv->lmv_fld);
1438 if (lmv->tgts != NULL) {
1440 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
1441 if (lmv->tgts[i] == NULL)
1443 lmv_del_target(lmv, i);
1445 OBD_FREE(lmv->tgts, sizeof(*lmv->tgts) * lmv->tgts_size);
1451 static int lmv_process_config(struct obd_device *obd, obd_count len, void *buf)
1453 struct lustre_cfg *lcfg = buf;
1454 struct obd_uuid obd_uuid;
1460 switch (lcfg->lcfg_command) {
1462 /* modify_mdc_tgts add 0:lustre-clilmv 1:lustre-MDT0000_UUID
1463 * 2:0 3:1 4:lustre-MDT0000-mdc_UUID */
1464 if (LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(obd_uuid.uuid))
1465 GOTO(out, rc = -EINVAL);
1467 obd_str2uuid(&obd_uuid, lustre_cfg_buf(lcfg, 1));
1469 if (sscanf(lustre_cfg_buf(lcfg, 2), "%d", &index) != 1)
1470 GOTO(out, rc = -EINVAL);
1471 if (sscanf(lustre_cfg_buf(lcfg, 3), "%d", &gen) != 1)
1472 GOTO(out, rc = -EINVAL);
1473 rc = lmv_add_target(obd, &obd_uuid, index, gen);
1476 CERROR("Unknown command: %d\n", lcfg->lcfg_command);
1477 GOTO(out, rc = -EINVAL);
1483 static int lmv_statfs(const struct lu_env *env, struct obd_export *exp,
1484 struct obd_statfs *osfs, __u64 max_age, __u32 flags)
1486 struct obd_device *obd = class_exp2obd(exp);
1487 struct lmv_obd *lmv = &obd->u.lmv;
1488 struct obd_statfs *temp;
1493 rc = lmv_check_connect(obd);
1497 OBD_ALLOC(temp, sizeof(*temp));
1501 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
1502 if (lmv->tgts[i] == NULL || lmv->tgts[i]->ltd_exp == NULL)
1505 rc = obd_statfs(env, lmv->tgts[i]->ltd_exp, temp,
1508 CERROR("can't stat MDS #%d (%s), error %d\n", i,
1509 lmv->tgts[i]->ltd_exp->exp_obd->obd_name,
1511 GOTO(out_free_temp, rc);
1516 /* If the statfs is from mount, it will needs
1517 * retrieve necessary information from MDT0.
1518 * i.e. mount does not need the merged osfs
1520 * And also clients can be mounted as long as
1521 * MDT0 is in service*/
1522 if (flags & OBD_STATFS_FOR_MDT0)
1523 GOTO(out_free_temp, rc);
1525 osfs->os_bavail += temp->os_bavail;
1526 osfs->os_blocks += temp->os_blocks;
1527 osfs->os_ffree += temp->os_ffree;
1528 osfs->os_files += temp->os_files;
1534 OBD_FREE(temp, sizeof(*temp));
1538 static int lmv_getstatus(struct obd_export *exp,
1540 struct obd_capa **pc)
1542 struct obd_device *obd = exp->exp_obd;
1543 struct lmv_obd *lmv = &obd->u.lmv;
1547 rc = lmv_check_connect(obd);
1551 rc = md_getstatus(lmv->tgts[0]->ltd_exp, fid, pc);
1555 static int lmv_getxattr(struct obd_export *exp, const struct lu_fid *fid,
1556 struct obd_capa *oc, obd_valid valid, const char *name,
1557 const char *input, int input_size, int output_size,
1558 int flags, struct ptlrpc_request **request)
1560 struct obd_device *obd = exp->exp_obd;
1561 struct lmv_obd *lmv = &obd->u.lmv;
1562 struct lmv_tgt_desc *tgt;
1566 rc = lmv_check_connect(obd);
1570 tgt = lmv_find_target(lmv, fid);
1572 RETURN(PTR_ERR(tgt));
1574 rc = md_getxattr(tgt->ltd_exp, fid, oc, valid, name, input,
1575 input_size, output_size, flags, request);
1580 static int lmv_setxattr(struct obd_export *exp, const struct lu_fid *fid,
1581 struct obd_capa *oc, obd_valid valid, const char *name,
1582 const char *input, int input_size, int output_size,
1583 int flags, __u32 suppgid,
1584 struct ptlrpc_request **request)
1586 struct obd_device *obd = exp->exp_obd;
1587 struct lmv_obd *lmv = &obd->u.lmv;
1588 struct lmv_tgt_desc *tgt;
1592 rc = lmv_check_connect(obd);
1596 tgt = lmv_find_target(lmv, fid);
1598 RETURN(PTR_ERR(tgt));
1600 rc = md_setxattr(tgt->ltd_exp, fid, oc, valid, name, input,
1601 input_size, output_size, flags, suppgid,
1607 static int lmv_getattr(struct obd_export *exp, struct md_op_data *op_data,
1608 struct ptlrpc_request **request)
1610 struct obd_device *obd = exp->exp_obd;
1611 struct lmv_obd *lmv = &obd->u.lmv;
1612 struct lmv_tgt_desc *tgt;
1616 rc = lmv_check_connect(obd);
1620 tgt = lmv_find_target(lmv, &op_data->op_fid1);
1622 RETURN(PTR_ERR(tgt));
1624 if (op_data->op_flags & MF_GET_MDT_IDX) {
1625 op_data->op_mds = tgt->ltd_idx;
1629 rc = md_getattr(tgt->ltd_exp, op_data, request);
1634 static int lmv_null_inode(struct obd_export *exp, const struct lu_fid *fid)
1636 struct obd_device *obd = exp->exp_obd;
1637 struct lmv_obd *lmv = &obd->u.lmv;
1642 rc = lmv_check_connect(obd);
1646 CDEBUG(D_INODE, "CBDATA for "DFID"\n", PFID(fid));
1649 * With DNE every object can have two locks in different namespaces:
1650 * lookup lock in space of MDT storing direntry and update/open lock in
1651 * space of MDT storing inode.
1653 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
1654 if (lmv->tgts[i] == NULL || lmv->tgts[i]->ltd_exp == NULL)
1656 md_null_inode(lmv->tgts[i]->ltd_exp, fid);
1662 static int lmv_find_cbdata(struct obd_export *exp, const struct lu_fid *fid,
1663 ldlm_iterator_t it, void *data)
1665 struct obd_device *obd = exp->exp_obd;
1666 struct lmv_obd *lmv = &obd->u.lmv;
1671 rc = lmv_check_connect(obd);
1675 CDEBUG(D_INODE, "CBDATA for "DFID"\n", PFID(fid));
1678 * With DNE every object can have two locks in different namespaces:
1679 * lookup lock in space of MDT storing direntry and update/open lock in
1680 * space of MDT storing inode.
1682 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
1683 if (lmv->tgts[i] == NULL || lmv->tgts[i]->ltd_exp == NULL)
1685 rc = md_find_cbdata(lmv->tgts[i]->ltd_exp, fid, it, data);
1694 static int lmv_close(struct obd_export *exp, struct md_op_data *op_data,
1695 struct md_open_data *mod, struct ptlrpc_request **request)
1697 struct obd_device *obd = exp->exp_obd;
1698 struct lmv_obd *lmv = &obd->u.lmv;
1699 struct lmv_tgt_desc *tgt;
1703 rc = lmv_check_connect(obd);
1707 tgt = lmv_find_target(lmv, &op_data->op_fid1);
1709 RETURN(PTR_ERR(tgt));
1711 CDEBUG(D_INODE, "CLOSE "DFID"\n", PFID(&op_data->op_fid1));
1712 rc = md_close(tgt->ltd_exp, op_data, mod, request);
1717 *lmv_locate_mds(struct lmv_obd *lmv, struct md_op_data *op_data,
1720 struct lmv_tgt_desc *tgt;
1722 tgt = lmv_find_target(lmv, fid);
1726 op_data->op_mds = tgt->ltd_idx;
1731 int lmv_create(struct obd_export *exp, struct md_op_data *op_data,
1732 const void *data, int datalen, int mode, __u32 uid,
1733 __u32 gid, cfs_cap_t cap_effective, __u64 rdev,
1734 struct ptlrpc_request **request)
1736 struct obd_device *obd = exp->exp_obd;
1737 struct lmv_obd *lmv = &obd->u.lmv;
1738 struct lmv_tgt_desc *tgt;
1742 rc = lmv_check_connect(obd);
1746 if (!lmv->desc.ld_active_tgt_count)
1749 tgt = lmv_locate_mds(lmv, op_data, &op_data->op_fid1);
1751 RETURN(PTR_ERR(tgt));
1753 rc = lmv_fid_alloc(exp, &op_data->op_fid2, op_data);
1757 CDEBUG(D_INODE, "CREATE '%*s' on "DFID" -> mds #%x\n",
1758 op_data->op_namelen, op_data->op_name, PFID(&op_data->op_fid1),
1761 op_data->op_flags |= MF_MDC_CANCEL_FID1;
1762 rc = md_create(tgt->ltd_exp, op_data, data, datalen, mode, uid, gid,
1763 cap_effective, rdev, request);
1766 if (*request == NULL)
1768 CDEBUG(D_INODE, "Created - "DFID"\n", PFID(&op_data->op_fid2));
1773 static int lmv_done_writing(struct obd_export *exp,
1774 struct md_op_data *op_data,
1775 struct md_open_data *mod)
1777 struct obd_device *obd = exp->exp_obd;
1778 struct lmv_obd *lmv = &obd->u.lmv;
1779 struct lmv_tgt_desc *tgt;
1783 rc = lmv_check_connect(obd);
1787 tgt = lmv_find_target(lmv, &op_data->op_fid1);
1789 RETURN(PTR_ERR(tgt));
1791 rc = md_done_writing(tgt->ltd_exp, op_data, mod);
1796 lmv_enqueue_remote(struct obd_export *exp, struct ldlm_enqueue_info *einfo,
1797 struct lookup_intent *it, struct md_op_data *op_data,
1798 struct lustre_handle *lockh, void *lmm, int lmmsize,
1799 __u64 extra_lock_flags)
1801 struct ptlrpc_request *req = it->d.lustre.it_data;
1802 struct obd_device *obd = exp->exp_obd;
1803 struct lmv_obd *lmv = &obd->u.lmv;
1804 struct lustre_handle plock;
1805 struct lmv_tgt_desc *tgt;
1806 struct md_op_data *rdata;
1808 struct mdt_body *body;
1813 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
1814 LASSERT(body != NULL);
1816 if (!(body->valid & OBD_MD_MDS))
1819 CDEBUG(D_INODE, "REMOTE_ENQUEUE '%s' on "DFID" -> "DFID"\n",
1820 LL_IT2STR(it), PFID(&op_data->op_fid1), PFID(&body->fid1));
1823 * We got LOOKUP lock, but we really need attrs.
1825 pmode = it->d.lustre.it_lock_mode;
1826 LASSERT(pmode != 0);
1827 memcpy(&plock, lockh, sizeof(plock));
1828 it->d.lustre.it_lock_mode = 0;
1829 it->d.lustre.it_data = NULL;
1832 ptlrpc_req_finished(req);
1834 tgt = lmv_find_target(lmv, &fid1);
1836 GOTO(out, rc = PTR_ERR(tgt));
1838 OBD_ALLOC_PTR(rdata);
1840 GOTO(out, rc = -ENOMEM);
1842 rdata->op_fid1 = fid1;
1843 rdata->op_bias = MDS_CROSS_REF;
1845 rc = md_enqueue(tgt->ltd_exp, einfo, it, rdata, lockh,
1846 lmm, lmmsize, NULL, extra_lock_flags);
1847 OBD_FREE_PTR(rdata);
1850 ldlm_lock_decref(&plock, pmode);
1855 lmv_enqueue(struct obd_export *exp, struct ldlm_enqueue_info *einfo,
1856 struct lookup_intent *it, struct md_op_data *op_data,
1857 struct lustre_handle *lockh, void *lmm, int lmmsize,
1858 struct ptlrpc_request **req, __u64 extra_lock_flags)
1860 struct obd_device *obd = exp->exp_obd;
1861 struct lmv_obd *lmv = &obd->u.lmv;
1862 struct lmv_tgt_desc *tgt;
1866 rc = lmv_check_connect(obd);
1870 CDEBUG(D_INODE, "ENQUEUE '%s' on "DFID"\n",
1871 LL_IT2STR(it), PFID(&op_data->op_fid1));
1873 tgt = lmv_locate_mds(lmv, op_data, &op_data->op_fid1);
1875 RETURN(PTR_ERR(tgt));
1877 CDEBUG(D_INODE, "ENQUEUE '%s' on "DFID" -> mds #%d\n",
1878 LL_IT2STR(it), PFID(&op_data->op_fid1), tgt->ltd_idx);
1880 rc = md_enqueue(tgt->ltd_exp, einfo, it, op_data, lockh,
1881 lmm, lmmsize, req, extra_lock_flags);
1883 if (rc == 0 && it && it->it_op == IT_OPEN) {
1884 rc = lmv_enqueue_remote(exp, einfo, it, op_data, lockh,
1885 lmm, lmmsize, extra_lock_flags);
1891 lmv_getattr_name(struct obd_export *exp,struct md_op_data *op_data,
1892 struct ptlrpc_request **request)
1894 struct ptlrpc_request *req = NULL;
1895 struct obd_device *obd = exp->exp_obd;
1896 struct lmv_obd *lmv = &obd->u.lmv;
1897 struct lmv_tgt_desc *tgt;
1898 struct mdt_body *body;
1902 rc = lmv_check_connect(obd);
1906 tgt = lmv_locate_mds(lmv, op_data, &op_data->op_fid1);
1908 RETURN(PTR_ERR(tgt));
1910 CDEBUG(D_INODE, "GETATTR_NAME for %*s on "DFID" -> mds #%d\n",
1911 op_data->op_namelen, op_data->op_name, PFID(&op_data->op_fid1),
1914 rc = md_getattr_name(tgt->ltd_exp, op_data, request);
1918 body = req_capsule_server_get(&(*request)->rq_pill,
1920 LASSERT(body != NULL);
1922 if (body->valid & OBD_MD_MDS) {
1923 struct lu_fid rid = body->fid1;
1924 CDEBUG(D_INODE, "Request attrs for "DFID"\n",
1927 tgt = lmv_find_target(lmv, &rid);
1929 ptlrpc_req_finished(*request);
1930 RETURN(PTR_ERR(tgt));
1933 op_data->op_fid1 = rid;
1934 op_data->op_valid |= OBD_MD_FLCROSSREF;
1935 op_data->op_namelen = 0;
1936 op_data->op_name = NULL;
1937 rc = md_getattr_name(tgt->ltd_exp, op_data, &req);
1938 ptlrpc_req_finished(*request);
1945 #define md_op_data_fid(op_data, fl) \
1946 (fl == MF_MDC_CANCEL_FID1 ? &op_data->op_fid1 : \
1947 fl == MF_MDC_CANCEL_FID2 ? &op_data->op_fid2 : \
1948 fl == MF_MDC_CANCEL_FID3 ? &op_data->op_fid3 : \
1949 fl == MF_MDC_CANCEL_FID4 ? &op_data->op_fid4 : \
1952 static int lmv_early_cancel(struct obd_export *exp, struct md_op_data *op_data,
1953 int op_tgt, ldlm_mode_t mode, int bits, int flag)
1955 struct lu_fid *fid = md_op_data_fid(op_data, flag);
1956 struct obd_device *obd = exp->exp_obd;
1957 struct lmv_obd *lmv = &obd->u.lmv;
1958 struct lmv_tgt_desc *tgt;
1959 ldlm_policy_data_t policy = {{0}};
1963 if (!fid_is_sane(fid))
1966 tgt = lmv_find_target(lmv, fid);
1968 RETURN(PTR_ERR(tgt));
1970 if (tgt->ltd_idx != op_tgt) {
1971 CDEBUG(D_INODE, "EARLY_CANCEL on "DFID"\n", PFID(fid));
1972 policy.l_inodebits.bits = bits;
1973 rc = md_cancel_unused(tgt->ltd_exp, fid, &policy,
1974 mode, LCF_ASYNC, NULL);
1977 "EARLY_CANCEL skip operation target %d on "DFID"\n",
1979 op_data->op_flags |= flag;
1987 * llite passes fid of an target inode in op_data->op_fid1 and id of directory in
1990 static int lmv_link(struct obd_export *exp, struct md_op_data *op_data,
1991 struct ptlrpc_request **request)
1993 struct obd_device *obd = exp->exp_obd;
1994 struct lmv_obd *lmv = &obd->u.lmv;
1995 struct lmv_tgt_desc *tgt;
1999 rc = lmv_check_connect(obd);
2003 LASSERT(op_data->op_namelen != 0);
2005 CDEBUG(D_INODE, "LINK "DFID":%*s to "DFID"\n",
2006 PFID(&op_data->op_fid2), op_data->op_namelen,
2007 op_data->op_name, PFID(&op_data->op_fid1));
2009 op_data->op_fsuid = current_fsuid();
2010 op_data->op_fsgid = current_fsgid();
2011 op_data->op_cap = cfs_curproc_cap_pack();
2012 tgt = lmv_locate_mds(lmv, op_data, &op_data->op_fid2);
2014 RETURN(PTR_ERR(tgt));
2017 * Cancel UPDATE lock on child (fid1).
2019 op_data->op_flags |= MF_MDC_CANCEL_FID2;
2020 rc = lmv_early_cancel(exp, op_data, tgt->ltd_idx, LCK_EX,
2021 MDS_INODELOCK_UPDATE, MF_MDC_CANCEL_FID1);
2025 rc = md_link(tgt->ltd_exp, op_data, request);
2030 static int lmv_rename(struct obd_export *exp, struct md_op_data *op_data,
2031 const char *old, int oldlen, const char *new, int newlen,
2032 struct ptlrpc_request **request)
2034 struct obd_device *obd = exp->exp_obd;
2035 struct lmv_obd *lmv = &obd->u.lmv;
2036 struct lmv_tgt_desc *src_tgt;
2037 struct lmv_tgt_desc *tgt_tgt;
2041 LASSERT(oldlen != 0);
2043 CDEBUG(D_INODE, "RENAME %*s in "DFID" to %*s in "DFID"\n",
2044 oldlen, old, PFID(&op_data->op_fid1),
2045 newlen, new, PFID(&op_data->op_fid2));
2047 rc = lmv_check_connect(obd);
2051 op_data->op_fsuid = current_fsuid();
2052 op_data->op_fsgid = current_fsgid();
2053 op_data->op_cap = cfs_curproc_cap_pack();
2054 src_tgt = lmv_locate_mds(lmv, op_data, &op_data->op_fid1);
2055 if (IS_ERR(src_tgt))
2056 RETURN(PTR_ERR(src_tgt));
2058 tgt_tgt = lmv_locate_mds(lmv, op_data, &op_data->op_fid2);
2059 if (IS_ERR(tgt_tgt))
2060 RETURN(PTR_ERR(tgt_tgt));
2062 * LOOKUP lock on src child (fid3) should also be cancelled for
2063 * src_tgt in mdc_rename.
2065 op_data->op_flags |= MF_MDC_CANCEL_FID1 | MF_MDC_CANCEL_FID3;
2068 * Cancel UPDATE locks on tgt parent (fid2), tgt_tgt is its
2071 rc = lmv_early_cancel(exp, op_data, src_tgt->ltd_idx,
2072 LCK_EX, MDS_INODELOCK_UPDATE,
2073 MF_MDC_CANCEL_FID2);
2076 * Cancel LOOKUP locks on tgt child (fid4) for parent tgt_tgt.
2079 rc = lmv_early_cancel(exp, op_data, src_tgt->ltd_idx,
2080 LCK_EX, MDS_INODELOCK_LOOKUP,
2081 MF_MDC_CANCEL_FID4);
2085 * Cancel all the locks on tgt child (fid4).
2088 rc = lmv_early_cancel(exp, op_data, src_tgt->ltd_idx,
2089 LCK_EX, MDS_INODELOCK_FULL,
2090 MF_MDC_CANCEL_FID4);
2093 rc = md_rename(src_tgt->ltd_exp, op_data, old, oldlen,
2094 new, newlen, request);
2098 static int lmv_setattr(struct obd_export *exp, struct md_op_data *op_data,
2099 void *ea, int ealen, void *ea2, int ea2len,
2100 struct ptlrpc_request **request,
2101 struct md_open_data **mod)
2103 struct obd_device *obd = exp->exp_obd;
2104 struct lmv_obd *lmv = &obd->u.lmv;
2105 struct lmv_tgt_desc *tgt;
2109 rc = lmv_check_connect(obd);
2113 CDEBUG(D_INODE, "SETATTR for "DFID", valid 0x%x\n",
2114 PFID(&op_data->op_fid1), op_data->op_attr.ia_valid);
2116 op_data->op_flags |= MF_MDC_CANCEL_FID1;
2117 tgt = lmv_find_target(lmv, &op_data->op_fid1);
2119 RETURN(PTR_ERR(tgt));
2121 rc = md_setattr(tgt->ltd_exp, op_data, ea, ealen, ea2,
2122 ea2len, request, mod);
2127 static int lmv_fsync(struct obd_export *exp, const struct lu_fid *fid,
2128 struct obd_capa *oc, struct ptlrpc_request **request)
2130 struct obd_device *obd = exp->exp_obd;
2131 struct lmv_obd *lmv = &obd->u.lmv;
2132 struct lmv_tgt_desc *tgt;
2136 rc = lmv_check_connect(obd);
2140 tgt = lmv_find_target(lmv, fid);
2142 RETURN(PTR_ERR(tgt));
2144 rc = md_fsync(tgt->ltd_exp, fid, oc, request);
2149 * Adjust a set of pages, each page containing an array of lu_dirpages,
2150 * so that each page can be used as a single logical lu_dirpage.
2152 * A lu_dirpage is laid out as follows, where s = ldp_hash_start,
2153 * e = ldp_hash_end, f = ldp_flags, p = padding, and each "ent" is a
2154 * struct lu_dirent. It has size up to LU_PAGE_SIZE. The ldp_hash_end
2155 * value is used as a cookie to request the next lu_dirpage in a
2156 * directory listing that spans multiple pages (two in this example):
2159 * .|--------v------- -----.
2160 * |s|e|f|p|ent|ent| ... |ent|
2161 * '--|-------------- -----' Each CFS_PAGE contains a single
2162 * '------. lu_dirpage.
2163 * .---------v------- -----.
2164 * |s|e|f|p|ent| 0 | ... | 0 |
2165 * '----------------- -----'
2167 * However, on hosts where the native VM page size (PAGE_CACHE_SIZE) is
2168 * larger than LU_PAGE_SIZE, a single host page may contain multiple
2169 * lu_dirpages. After reading the lu_dirpages from the MDS, the
2170 * ldp_hash_end of the first lu_dirpage refers to the one immediately
2171 * after it in the same CFS_PAGE (arrows simplified for brevity, but
2172 * in general e0==s1, e1==s2, etc.):
2174 * .-------------------- -----.
2175 * |s0|e0|f0|p|ent|ent| ... |ent|
2176 * |---v---------------- -----|
2177 * |s1|e1|f1|p|ent|ent| ... |ent|
2178 * |---v---------------- -----| Here, each CFS_PAGE contains
2179 * ... multiple lu_dirpages.
2180 * |---v---------------- -----|
2181 * |s'|e'|f'|p|ent|ent| ... |ent|
2182 * '---|---------------- -----'
2184 * .----------------------------.
2187 * This structure is transformed into a single logical lu_dirpage as follows:
2189 * - Replace e0 with e' so the request for the next lu_dirpage gets the page
2190 * labeled 'next CFS_PAGE'.
2192 * - Copy the LDF_COLLIDE flag from f' to f0 to correctly reflect whether
2193 * a hash collision with the next page exists.
2195 * - Adjust the lde_reclen of the ending entry of each lu_dirpage to span
2196 * to the first entry of the next lu_dirpage.
2198 #if PAGE_CACHE_SIZE > LU_PAGE_SIZE
2199 static void lmv_adjust_dirpages(struct page **pages, int ncfspgs, int nlupgs)
2203 for (i = 0; i < ncfspgs; i++) {
2204 struct lu_dirpage *dp = kmap(pages[i]);
2205 struct lu_dirpage *first = dp;
2206 struct lu_dirent *end_dirent = NULL;
2207 struct lu_dirent *ent;
2208 __u64 hash_end = dp->ldp_hash_end;
2209 __u32 flags = dp->ldp_flags;
2211 while (--nlupgs > 0) {
2212 ent = lu_dirent_start(dp);
2213 for (end_dirent = ent; ent != NULL;
2214 end_dirent = ent, ent = lu_dirent_next(ent));
2216 /* Advance dp to next lu_dirpage. */
2217 dp = (struct lu_dirpage *)((char *)dp + LU_PAGE_SIZE);
2219 /* Check if we've reached the end of the CFS_PAGE. */
2220 if (!((unsigned long)dp & ~CFS_PAGE_MASK))
2223 /* Save the hash and flags of this lu_dirpage. */
2224 hash_end = dp->ldp_hash_end;
2225 flags = dp->ldp_flags;
2227 /* Check if lu_dirpage contains no entries. */
2231 /* Enlarge the end entry lde_reclen from 0 to
2232 * first entry of next lu_dirpage. */
2233 LASSERT(le16_to_cpu(end_dirent->lde_reclen) == 0);
2234 end_dirent->lde_reclen =
2235 cpu_to_le16((char *)(dp->ldp_entries) -
2236 (char *)end_dirent);
2239 first->ldp_hash_end = hash_end;
2240 first->ldp_flags &= ~cpu_to_le32(LDF_COLLIDE);
2241 first->ldp_flags |= flags & cpu_to_le32(LDF_COLLIDE);
2245 LASSERTF(nlupgs == 0, "left = %d", nlupgs);
2248 #define lmv_adjust_dirpages(pages, ncfspgs, nlupgs) do {} while (0)
2249 #endif /* PAGE_CACHE_SIZE > LU_PAGE_SIZE */
2251 static int lmv_readpage(struct obd_export *exp, struct md_op_data *op_data,
2252 struct page **pages, struct ptlrpc_request **request)
2254 struct obd_device *obd = exp->exp_obd;
2255 struct lmv_obd *lmv = &obd->u.lmv;
2256 __u64 offset = op_data->op_offset;
2258 int ncfspgs; /* pages read in PAGE_CACHE_SIZE */
2259 int nlupgs; /* pages read in LU_PAGE_SIZE */
2260 struct lmv_tgt_desc *tgt;
2263 rc = lmv_check_connect(obd);
2267 CDEBUG(D_INODE, "READPAGE at "LPX64" from "DFID"\n",
2268 offset, PFID(&op_data->op_fid1));
2270 tgt = lmv_find_target(lmv, &op_data->op_fid1);
2272 RETURN(PTR_ERR(tgt));
2274 rc = md_readpage(tgt->ltd_exp, op_data, pages, request);
2278 ncfspgs = ((*request)->rq_bulk->bd_nob_transferred +
2279 PAGE_CACHE_SIZE - 1) >> PAGE_CACHE_SHIFT;
2280 nlupgs = (*request)->rq_bulk->bd_nob_transferred >> LU_PAGE_SHIFT;
2281 LASSERT(!((*request)->rq_bulk->bd_nob_transferred & ~LU_PAGE_MASK));
2282 LASSERT(ncfspgs > 0 && ncfspgs <= op_data->op_npages);
2284 CDEBUG(D_INODE, "read %d(%d)/%d pages\n", ncfspgs, nlupgs,
2285 op_data->op_npages);
2287 lmv_adjust_dirpages(pages, ncfspgs, nlupgs);
2292 static int lmv_unlink(struct obd_export *exp, struct md_op_data *op_data,
2293 struct ptlrpc_request **request)
2295 struct obd_device *obd = exp->exp_obd;
2296 struct lmv_obd *lmv = &obd->u.lmv;
2297 struct lmv_tgt_desc *tgt = NULL;
2298 struct mdt_body *body;
2302 rc = lmv_check_connect(obd);
2306 /* Send unlink requests to the MDT where the child is located */
2307 if (likely(!fid_is_zero(&op_data->op_fid2)))
2308 tgt = lmv_locate_mds(lmv, op_data, &op_data->op_fid2);
2310 tgt = lmv_locate_mds(lmv, op_data, &op_data->op_fid1);
2312 RETURN(PTR_ERR(tgt));
2314 op_data->op_fsuid = current_fsuid();
2315 op_data->op_fsgid = current_fsgid();
2316 op_data->op_cap = cfs_curproc_cap_pack();
2319 * If child's fid is given, cancel unused locks for it if it is from
2320 * another export than parent.
2322 * LOOKUP lock for child (fid3) should also be cancelled on parent
2323 * tgt_tgt in mdc_unlink().
2325 op_data->op_flags |= MF_MDC_CANCEL_FID1 | MF_MDC_CANCEL_FID3;
2328 * Cancel FULL locks on child (fid3).
2330 rc = lmv_early_cancel(exp, op_data, tgt->ltd_idx, LCK_EX,
2331 MDS_INODELOCK_FULL, MF_MDC_CANCEL_FID3);
2336 CDEBUG(D_INODE, "unlink with fid="DFID"/"DFID" -> mds #%d\n",
2337 PFID(&op_data->op_fid1), PFID(&op_data->op_fid2), tgt->ltd_idx);
2339 rc = md_unlink(tgt->ltd_exp, op_data, request);
2340 if (rc != 0 && rc != -EREMOTE)
2343 body = req_capsule_server_get(&(*request)->rq_pill, &RMF_MDT_BODY);
2347 /* Not cross-ref case, just get out of here. */
2348 if (likely(!(body->valid & OBD_MD_MDS)))
2351 CDEBUG(D_INODE, "%s: try unlink to another MDT for "DFID"\n",
2352 exp->exp_obd->obd_name, PFID(&body->fid1));
2354 /* This is a remote object, try remote MDT, Note: it may
2355 * try more than 1 time here, Considering following case
2356 * /mnt/lustre is root on MDT0, remote1 is on MDT1
2357 * 1. Initially A does not know where remote1 is, it send
2358 * unlink RPC to MDT0, MDT0 return -EREMOTE, it will
2359 * resend unlink RPC to MDT1 (retry 1st time).
2361 * 2. During the unlink RPC in flight,
2362 * client B mv /mnt/lustre/remote1 /mnt/lustre/remote2
2363 * and create new remote1, but on MDT0
2365 * 3. MDT1 get unlink RPC(from A), then do remote lock on
2366 * /mnt/lustre, then lookup get fid of remote1, and find
2367 * it is remote dir again, and replay -EREMOTE again.
2369 * 4. Then A will resend unlink RPC to MDT0. (retry 2nd times).
2371 * In theory, it might try unlimited time here, but it should
2372 * be very rare case. */
2373 op_data->op_fid2 = body->fid1;
2374 ptlrpc_req_finished(*request);
2380 static int lmv_precleanup(struct obd_device *obd, enum obd_cleanup_stage stage)
2382 struct lmv_obd *lmv = &obd->u.lmv;
2386 case OBD_CLEANUP_EARLY:
2387 /* XXX: here should be calling obd_precleanup() down to
2390 case OBD_CLEANUP_EXPORTS:
2391 fld_client_proc_fini(&lmv->lmv_fld);
2392 lprocfs_obd_cleanup(obd);
2393 lprocfs_free_md_stats(obd);
2401 static int lmv_get_info(const struct lu_env *env, struct obd_export *exp,
2402 __u32 keylen, void *key, __u32 *vallen, void *val,
2403 struct lov_stripe_md *lsm)
2405 struct obd_device *obd;
2406 struct lmv_obd *lmv;
2410 obd = class_exp2obd(exp);
2412 CDEBUG(D_IOCTL, "Invalid client cookie "LPX64"\n",
2413 exp->exp_handle.h_cookie);
2418 if (keylen >= strlen("remote_flag") && !strcmp(key, "remote_flag")) {
2421 rc = lmv_check_connect(obd);
2425 LASSERT(*vallen == sizeof(__u32));
2426 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
2427 struct lmv_tgt_desc *tgt = lmv->tgts[i];
2429 * All tgts should be connected when this gets called.
2431 if (tgt == NULL || tgt->ltd_exp == NULL)
2434 if (!obd_get_info(env, tgt->ltd_exp, keylen, key,
2439 } else if (KEY_IS(KEY_MAX_EASIZE) || KEY_IS(KEY_CONN_DATA)) {
2440 rc = lmv_check_connect(obd);
2445 * Forwarding this request to first MDS, it should know LOV
2448 rc = obd_get_info(env, lmv->tgts[0]->ltd_exp, keylen, key,
2450 if (!rc && KEY_IS(KEY_CONN_DATA))
2451 exp->exp_connect_data = *(struct obd_connect_data *)val;
2453 } else if (KEY_IS(KEY_TGT_COUNT)) {
2454 *((int *)val) = lmv->desc.ld_tgt_count;
2458 CDEBUG(D_IOCTL, "Invalid key\n");
2462 int lmv_set_info_async(const struct lu_env *env, struct obd_export *exp,
2463 obd_count keylen, void *key, obd_count vallen,
2464 void *val, struct ptlrpc_request_set *set)
2466 struct lmv_tgt_desc *tgt = NULL;
2467 struct obd_device *obd;
2468 struct lmv_obd *lmv;
2472 obd = class_exp2obd(exp);
2474 CDEBUG(D_IOCTL, "Invalid client cookie "LPX64"\n",
2475 exp->exp_handle.h_cookie);
2480 if (KEY_IS(KEY_READ_ONLY) || KEY_IS(KEY_FLUSH_CTX)) {
2483 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
2486 if (tgt == NULL || tgt->ltd_exp == NULL)
2489 err = obd_set_info_async(env, tgt->ltd_exp,
2490 keylen, key, vallen, val, set);
2501 int lmv_packmd(struct obd_export *exp, struct lov_mds_md **lmmp,
2502 struct lov_stripe_md *lsm)
2504 struct obd_device *obd = class_exp2obd(exp);
2505 struct lmv_obd *lmv = &obd->u.lmv;
2506 struct lmv_stripe_md *meap;
2507 struct lmv_stripe_md *lsmp;
2512 mea_size = lmv_get_easize(lmv);
2516 if (*lmmp && !lsm) {
2517 OBD_FREE_LARGE(*lmmp, mea_size);
2522 if (*lmmp == NULL) {
2523 OBD_ALLOC_LARGE(*lmmp, mea_size);
2531 lsmp = (struct lmv_stripe_md *)lsm;
2532 meap = (struct lmv_stripe_md *)*lmmp;
2534 if (lsmp->mea_magic != MEA_MAGIC_LAST_CHAR &&
2535 lsmp->mea_magic != MEA_MAGIC_ALL_CHARS)
2538 meap->mea_magic = cpu_to_le32(lsmp->mea_magic);
2539 meap->mea_count = cpu_to_le32(lsmp->mea_count);
2540 meap->mea_master = cpu_to_le32(lsmp->mea_master);
2542 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
2543 meap->mea_ids[i] = lsmp->mea_ids[i];
2544 fid_cpu_to_le(&meap->mea_ids[i], &lsmp->mea_ids[i]);
2550 int lmv_unpackmd(struct obd_export *exp, struct lov_stripe_md **lsmp,
2551 struct lov_mds_md *lmm, int lmm_size)
2553 struct obd_device *obd = class_exp2obd(exp);
2554 struct lmv_stripe_md **tmea = (struct lmv_stripe_md **)lsmp;
2555 struct lmv_stripe_md *mea = (struct lmv_stripe_md *)lmm;
2556 struct lmv_obd *lmv = &obd->u.lmv;
2562 mea_size = lmv_get_easize(lmv);
2566 if (*lsmp != NULL && lmm == NULL) {
2567 OBD_FREE_LARGE(*tmea, mea_size);
2572 LASSERT(mea_size == lmm_size);
2574 OBD_ALLOC_LARGE(*tmea, mea_size);
2581 if (mea->mea_magic == MEA_MAGIC_LAST_CHAR ||
2582 mea->mea_magic == MEA_MAGIC_ALL_CHARS ||
2583 mea->mea_magic == MEA_MAGIC_HASH_SEGMENT)
2585 magic = le32_to_cpu(mea->mea_magic);
2588 * Old mea is not handled here.
2590 CERROR("Old not supportable EA is found\n");
2594 (*tmea)->mea_magic = magic;
2595 (*tmea)->mea_count = le32_to_cpu(mea->mea_count);
2596 (*tmea)->mea_master = le32_to_cpu(mea->mea_master);
2598 for (i = 0; i < (*tmea)->mea_count; i++) {
2599 (*tmea)->mea_ids[i] = mea->mea_ids[i];
2600 fid_le_to_cpu(&(*tmea)->mea_ids[i], &(*tmea)->mea_ids[i]);
2605 static int lmv_cancel_unused(struct obd_export *exp, const struct lu_fid *fid,
2606 ldlm_policy_data_t *policy, ldlm_mode_t mode,
2607 ldlm_cancel_flags_t flags, void *opaque)
2609 struct obd_device *obd = exp->exp_obd;
2610 struct lmv_obd *lmv = &obd->u.lmv;
2616 LASSERT(fid != NULL);
2618 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
2619 struct lmv_tgt_desc *tgt = lmv->tgts[i];
2621 if (tgt == NULL || tgt->ltd_exp == NULL || !tgt->ltd_active)
2624 err = md_cancel_unused(tgt->ltd_exp, fid, policy, mode, flags,
2632 int lmv_set_lock_data(struct obd_export *exp, __u64 *lockh, void *data,
2635 struct lmv_obd *lmv = &exp->exp_obd->u.lmv;
2636 struct lmv_tgt_desc *tgt = lmv->tgts[0];
2640 if (tgt == NULL || tgt->ltd_exp == NULL)
2642 rc = md_set_lock_data(tgt->ltd_exp, lockh, data, bits);
2646 ldlm_mode_t lmv_lock_match(struct obd_export *exp, __u64 flags,
2647 const struct lu_fid *fid, ldlm_type_t type,
2648 ldlm_policy_data_t *policy, ldlm_mode_t mode,
2649 struct lustre_handle *lockh)
2651 struct obd_device *obd = exp->exp_obd;
2652 struct lmv_obd *lmv = &obd->u.lmv;
2657 CDEBUG(D_INODE, "Lock match for "DFID"\n", PFID(fid));
2660 * With CMD every object can have two locks in different namespaces:
2661 * lookup lock in space of mds storing direntry and update/open lock in
2662 * space of mds storing inode. Thus we check all targets, not only that
2663 * one fid was created in.
2665 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
2666 struct lmv_tgt_desc *tgt = lmv->tgts[i];
2668 if (tgt == NULL || tgt->ltd_exp == NULL || !tgt->ltd_active)
2671 rc = md_lock_match(tgt->ltd_exp, flags, fid, type, policy, mode,
2680 int lmv_get_lustre_md(struct obd_export *exp, struct ptlrpc_request *req,
2681 struct obd_export *dt_exp, struct obd_export *md_exp,
2682 struct lustre_md *md)
2684 struct lmv_obd *lmv = &exp->exp_obd->u.lmv;
2685 struct lmv_tgt_desc *tgt = lmv->tgts[0];
2687 if (tgt == NULL || tgt->ltd_exp == NULL)
2689 return md_get_lustre_md(tgt->ltd_exp, req, dt_exp, md_exp, md);
2692 int lmv_free_lustre_md(struct obd_export *exp, struct lustre_md *md)
2694 struct obd_device *obd = exp->exp_obd;
2695 struct lmv_obd *lmv = &obd->u.lmv;
2696 struct lmv_tgt_desc *tgt = lmv->tgts[0];
2700 obd_free_memmd(exp, (void *)&md->mea);
2701 if (tgt == NULL || tgt->ltd_exp == NULL)
2703 RETURN(md_free_lustre_md(tgt->ltd_exp, md));
2706 int lmv_set_open_replay_data(struct obd_export *exp,
2707 struct obd_client_handle *och,
2708 struct lookup_intent *it)
2710 struct obd_device *obd = exp->exp_obd;
2711 struct lmv_obd *lmv = &obd->u.lmv;
2712 struct lmv_tgt_desc *tgt;
2715 tgt = lmv_find_target(lmv, &och->och_fid);
2717 RETURN(PTR_ERR(tgt));
2719 RETURN(md_set_open_replay_data(tgt->ltd_exp, och, it));
2722 int lmv_clear_open_replay_data(struct obd_export *exp,
2723 struct obd_client_handle *och)
2725 struct obd_device *obd = exp->exp_obd;
2726 struct lmv_obd *lmv = &obd->u.lmv;
2727 struct lmv_tgt_desc *tgt;
2730 tgt = lmv_find_target(lmv, &och->och_fid);
2732 RETURN(PTR_ERR(tgt));
2734 RETURN(md_clear_open_replay_data(tgt->ltd_exp, och));
2737 static int lmv_get_remote_perm(struct obd_export *exp,
2738 const struct lu_fid *fid,
2739 struct obd_capa *oc, __u32 suppgid,
2740 struct ptlrpc_request **request)
2742 struct obd_device *obd = exp->exp_obd;
2743 struct lmv_obd *lmv = &obd->u.lmv;
2744 struct lmv_tgt_desc *tgt;
2748 rc = lmv_check_connect(obd);
2752 tgt = lmv_find_target(lmv, fid);
2754 RETURN(PTR_ERR(tgt));
2756 rc = md_get_remote_perm(tgt->ltd_exp, fid, oc, suppgid, request);
2760 static int lmv_renew_capa(struct obd_export *exp, struct obd_capa *oc,
2763 struct obd_device *obd = exp->exp_obd;
2764 struct lmv_obd *lmv = &obd->u.lmv;
2765 struct lmv_tgt_desc *tgt;
2769 rc = lmv_check_connect(obd);
2773 tgt = lmv_find_target(lmv, &oc->c_capa.lc_fid);
2775 RETURN(PTR_ERR(tgt));
2777 rc = md_renew_capa(tgt->ltd_exp, oc, cb);
2781 int lmv_unpack_capa(struct obd_export *exp, struct ptlrpc_request *req,
2782 const struct req_msg_field *field, struct obd_capa **oc)
2784 struct lmv_obd *lmv = &exp->exp_obd->u.lmv;
2785 struct lmv_tgt_desc *tgt = lmv->tgts[0];
2787 if (tgt == NULL || tgt->ltd_exp == NULL)
2789 return md_unpack_capa(tgt->ltd_exp, req, field, oc);
2792 int lmv_intent_getattr_async(struct obd_export *exp,
2793 struct md_enqueue_info *minfo,
2794 struct ldlm_enqueue_info *einfo)
2796 struct md_op_data *op_data = &minfo->mi_data;
2797 struct obd_device *obd = exp->exp_obd;
2798 struct lmv_obd *lmv = &obd->u.lmv;
2799 struct lmv_tgt_desc *tgt = NULL;
2803 rc = lmv_check_connect(obd);
2807 tgt = lmv_find_target(lmv, &op_data->op_fid1);
2809 RETURN(PTR_ERR(tgt));
2811 rc = md_intent_getattr_async(tgt->ltd_exp, minfo, einfo);
2815 int lmv_revalidate_lock(struct obd_export *exp, struct lookup_intent *it,
2816 struct lu_fid *fid, __u64 *bits)
2818 struct obd_device *obd = exp->exp_obd;
2819 struct lmv_obd *lmv = &obd->u.lmv;
2820 struct lmv_tgt_desc *tgt;
2824 rc = lmv_check_connect(obd);
2828 tgt = lmv_find_target(lmv, fid);
2830 RETURN(PTR_ERR(tgt));
2832 rc = md_revalidate_lock(tgt->ltd_exp, it, fid, bits);
2837 * For lmv, only need to send request to master MDT, and the master MDT will
2838 * process with other slave MDTs. The only exception is Q_GETOQUOTA for which
2839 * we directly fetch data from the slave MDTs.
2841 int lmv_quotactl(struct obd_device *unused, struct obd_export *exp,
2842 struct obd_quotactl *oqctl)
2844 struct obd_device *obd = class_exp2obd(exp);
2845 struct lmv_obd *lmv = &obd->u.lmv;
2846 struct lmv_tgt_desc *tgt = lmv->tgts[0];
2849 __u64 curspace, curinodes;
2853 tgt->ltd_exp == NULL ||
2855 lmv->desc.ld_tgt_count == 0) {
2856 CERROR("master lmv inactive\n");
2860 if (oqctl->qc_cmd != Q_GETOQUOTA) {
2861 rc = obd_quotactl(tgt->ltd_exp, oqctl);
2865 curspace = curinodes = 0;
2866 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
2870 if (tgt == NULL || tgt->ltd_exp == NULL || !tgt->ltd_active)
2873 err = obd_quotactl(tgt->ltd_exp, oqctl);
2875 CERROR("getquota on mdt %d failed. %d\n", i, err);
2879 curspace += oqctl->qc_dqblk.dqb_curspace;
2880 curinodes += oqctl->qc_dqblk.dqb_curinodes;
2883 oqctl->qc_dqblk.dqb_curspace = curspace;
2884 oqctl->qc_dqblk.dqb_curinodes = curinodes;
2889 int lmv_quotacheck(struct obd_device *unused, struct obd_export *exp,
2890 struct obd_quotactl *oqctl)
2892 struct obd_device *obd = class_exp2obd(exp);
2893 struct lmv_obd *lmv = &obd->u.lmv;
2894 struct lmv_tgt_desc *tgt;
2899 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
2902 if (tgt == NULL || tgt->ltd_exp == NULL || !tgt->ltd_active) {
2903 CERROR("lmv idx %d inactive\n", i);
2907 err = obd_quotacheck(tgt->ltd_exp, oqctl);
2915 struct obd_ops lmv_obd_ops = {
2916 .o_owner = THIS_MODULE,
2917 .o_setup = lmv_setup,
2918 .o_cleanup = lmv_cleanup,
2919 .o_precleanup = lmv_precleanup,
2920 .o_process_config = lmv_process_config,
2921 .o_connect = lmv_connect,
2922 .o_disconnect = lmv_disconnect,
2923 .o_statfs = lmv_statfs,
2924 .o_get_info = lmv_get_info,
2925 .o_set_info_async = lmv_set_info_async,
2926 .o_packmd = lmv_packmd,
2927 .o_unpackmd = lmv_unpackmd,
2928 .o_notify = lmv_notify,
2929 .o_get_uuid = lmv_get_uuid,
2930 .o_iocontrol = lmv_iocontrol,
2931 .o_quotacheck = lmv_quotacheck,
2932 .o_quotactl = lmv_quotactl
2935 struct md_ops lmv_md_ops = {
2936 .m_getstatus = lmv_getstatus,
2937 .m_null_inode = lmv_null_inode,
2938 .m_find_cbdata = lmv_find_cbdata,
2939 .m_close = lmv_close,
2940 .m_create = lmv_create,
2941 .m_done_writing = lmv_done_writing,
2942 .m_enqueue = lmv_enqueue,
2943 .m_getattr = lmv_getattr,
2944 .m_getxattr = lmv_getxattr,
2945 .m_getattr_name = lmv_getattr_name,
2946 .m_intent_lock = lmv_intent_lock,
2948 .m_rename = lmv_rename,
2949 .m_setattr = lmv_setattr,
2950 .m_setxattr = lmv_setxattr,
2951 .m_fsync = lmv_fsync,
2952 .m_readpage = lmv_readpage,
2953 .m_unlink = lmv_unlink,
2954 .m_init_ea_size = lmv_init_ea_size,
2955 .m_cancel_unused = lmv_cancel_unused,
2956 .m_set_lock_data = lmv_set_lock_data,
2957 .m_lock_match = lmv_lock_match,
2958 .m_get_lustre_md = lmv_get_lustre_md,
2959 .m_free_lustre_md = lmv_free_lustre_md,
2960 .m_set_open_replay_data = lmv_set_open_replay_data,
2961 .m_clear_open_replay_data = lmv_clear_open_replay_data,
2962 .m_renew_capa = lmv_renew_capa,
2963 .m_unpack_capa = lmv_unpack_capa,
2964 .m_get_remote_perm = lmv_get_remote_perm,
2965 .m_intent_getattr_async = lmv_intent_getattr_async,
2966 .m_revalidate_lock = lmv_revalidate_lock
2969 int __init lmv_init(void)
2971 return class_register_type(&lmv_obd_ops, &lmv_md_ops, NULL,
2972 #ifndef HAVE_ONLY_PROCFS_SEQ
2975 LUSTRE_LMV_NAME, NULL);
2979 static void lmv_exit(void)
2981 class_unregister_type(LUSTRE_LMV_NAME);
2984 MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
2985 MODULE_DESCRIPTION("Lustre Logical Metadata Volume OBD driver");
2986 MODULE_LICENSE("GPL");
2988 module_init(lmv_init);
2989 module_exit(lmv_exit);