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) 2002, 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.
36 * lustre/lov/lov_obd.c
38 * Author: Phil Schwan <phil@clusterfs.com>
39 * Author: Peter Braam <braam@clusterfs.com>
40 * Author: Mike Shaver <shaver@clusterfs.com>
41 * Author: Nathan Rutman <nathan@clusterfs.com>
44 #define DEBUG_SUBSYSTEM S_LOV
46 #include <libcfs/libcfs.h>
48 #include <liblustre.h>
51 #include <obd_support.h>
52 #include <lustre_lib.h>
53 #include <lustre_net.h>
54 #include <lustre/lustre_idl.h>
55 #include <lustre_dlm.h>
56 #include <lustre_mds.h>
57 #include <obd_class.h>
58 #include <lprocfs_status.h>
59 #include <lustre_param.h>
60 #include <cl_object.h>
62 #include <lustre/ll_fiemap.h>
63 #include <lustre_fid.h>
65 #include "lov_internal.h"
67 /* Keep a refcount of lov->tgt usage to prevent racing with addition/deletion.
68 Any function that expects lov_tgts to remain stationary must take a ref. */
69 static void lov_getref(struct obd_device *obd)
71 struct lov_obd *lov = &obd->u.lov;
73 /* nobody gets through here until lov_putref is done */
74 mutex_lock(&lov->lov_lock);
75 atomic_inc(&lov->lov_refcount);
76 mutex_unlock(&lov->lov_lock);
80 static void __lov_del_obd(struct obd_device *obd, struct lov_tgt_desc *tgt);
82 static void lov_putref(struct obd_device *obd)
84 struct lov_obd *lov = &obd->u.lov;
86 mutex_lock(&lov->lov_lock);
87 /* ok to dec to 0 more than once -- ltd_exp's will be null */
88 if (atomic_dec_and_test(&lov->lov_refcount) && lov->lov_death_row) {
89 struct list_head kill = LIST_HEAD_INIT(kill);
90 struct lov_tgt_desc *tgt, *n;
93 CDEBUG(D_CONFIG, "destroying %d lov targets\n",
95 for (i = 0; i < lov->desc.ld_tgt_count; i++) {
96 tgt = lov->lov_tgts[i];
98 if (!tgt || !tgt->ltd_reap)
100 cfs_list_add(&tgt->ltd_kill, &kill);
101 /* XXX - right now there is a dependency on ld_tgt_count
102 * being the maximum tgt index for computing the
103 * mds_max_easize. So we can't shrink it. */
104 lov_ost_pool_remove(&lov->lov_packed, i);
105 lov->lov_tgts[i] = NULL;
106 lov->lov_death_row--;
108 mutex_unlock(&lov->lov_lock);
110 cfs_list_for_each_entry_safe(tgt, n, &kill, ltd_kill) {
111 cfs_list_del(&tgt->ltd_kill);
113 __lov_del_obd(obd, tgt);
116 mutex_unlock(&lov->lov_lock);
120 static int lov_set_osc_active(struct obd_device *obd, struct obd_uuid *uuid,
121 enum obd_notify_event ev);
122 static int lov_notify(struct obd_device *obd, struct obd_device *watched,
123 enum obd_notify_event ev, void *data);
125 int lov_connect_obd(struct obd_device *obd, __u32 index, int activate,
126 struct obd_connect_data *data)
128 struct lov_obd *lov = &obd->u.lov;
129 struct obd_uuid *tgt_uuid;
130 struct obd_device *tgt_obd;
131 static struct obd_uuid lov_osc_uuid = { "LOV_OSC_UUID" };
132 struct obd_import *imp;
136 if (lov->lov_tgts[index] == NULL)
139 tgt_uuid = &lov->lov_tgts[index]->ltd_uuid;
140 tgt_obd = lov->lov_tgts[index]->ltd_obd;
142 if (!tgt_obd->obd_set_up) {
143 CERROR("Target %s not set up\n", obd_uuid2str(tgt_uuid));
147 /* override the sp_me from lov */
148 tgt_obd->u.cli.cl_sp_me = lov->lov_sp_me;
150 if (data && (data->ocd_connect_flags & OBD_CONNECT_INDEX))
151 data->ocd_index = index;
154 * Divine LOV knows that OBDs under it are OSCs.
156 imp = tgt_obd->u.cli.cl_import;
159 tgt_obd->obd_no_recov = 0;
160 /* FIXME this is probably supposed to be
161 ptlrpc_set_import_active. Horrible naming. */
162 ptlrpc_activate_import(imp);
165 rc = obd_register_observer(tgt_obd, obd);
167 CERROR("Target %s register_observer error %d\n",
168 obd_uuid2str(tgt_uuid), rc);
173 if (imp->imp_invalid) {
174 CDEBUG(D_CONFIG, "not connecting OSC %s; administratively "
175 "disabled\n", obd_uuid2str(tgt_uuid));
179 rc = obd_connect(NULL, &lov->lov_tgts[index]->ltd_exp, tgt_obd,
180 &lov_osc_uuid, data, NULL);
181 if (rc || !lov->lov_tgts[index]->ltd_exp) {
182 CERROR("Target %s connect error %d\n",
183 obd_uuid2str(tgt_uuid), rc);
187 lov->lov_tgts[index]->ltd_reap = 0;
189 CDEBUG(D_CONFIG, "Connected tgt idx %d %s (%s) %sactive\n", index,
190 obd_uuid2str(tgt_uuid), tgt_obd->obd_name, activate ? "":"in");
192 if (obd->obd_type->typ_procsym != NULL) {
193 struct proc_dir_entry *osc_symlink;
194 struct obd_device *osc_obd;
196 osc_obd = lov->lov_tgts[index]->ltd_exp->exp_obd;
198 LASSERT(osc_obd != NULL);
199 LASSERT(osc_obd->obd_magic == OBD_DEVICE_MAGIC);
200 LASSERT(osc_obd->obd_type->typ_name != NULL);
202 osc_symlink = lprocfs_add_symlink(osc_obd->obd_name,
203 obd->obd_type->typ_procsym,
205 osc_obd->obd_type->typ_name,
207 if (osc_symlink == NULL) {
208 CERROR("could not register LOV target "
209 "/proc/fs/lustre/%s/%s/target_obds/%s.",
210 obd->obd_type->typ_name, obd->obd_name,
212 lprocfs_remove(&obd->obd_type->typ_procsym);
218 static int lov_connect(const struct lu_env *env,
219 struct obd_export **exp, struct obd_device *obd,
220 struct obd_uuid *cluuid, struct obd_connect_data *data,
223 struct lov_obd *lov = &obd->u.lov;
224 struct lov_tgt_desc *tgt;
225 struct lustre_handle conn;
229 CDEBUG(D_CONFIG, "connect #%d\n", lov->lov_connects);
231 rc = class_connect(&conn, obd, cluuid);
235 *exp = class_conn2export(&conn);
237 /* Why should there ever be more than 1 connect? */
239 LASSERT(lov->lov_connects == 1);
241 memset(&lov->lov_ocd, 0, sizeof(lov->lov_ocd));
243 lov->lov_ocd = *data;
245 obd->obd_type->typ_procsym = lprocfs_seq_register("target_obds",
248 if (IS_ERR(obd->obd_type->typ_procsym)) {
249 CERROR("%s: could not register /proc/fs/lustre/%s/%s/target_obds.",
250 obd->obd_name, obd->obd_type->typ_name, obd->obd_name);
251 obd->obd_type->typ_procsym = NULL;
255 for (i = 0; i < lov->desc.ld_tgt_count; i++) {
256 tgt = lov->lov_tgts[i];
257 if (!tgt || obd_uuid_empty(&tgt->ltd_uuid))
259 /* Flags will be lowest common denominator */
260 rc = lov_connect_obd(obd, i, tgt->ltd_activate, &lov->lov_ocd);
262 CERROR("%s: lov connect tgt %d failed: %d\n",
263 obd->obd_name, i, rc);
266 /* connect to administrative disabled ost */
267 if (!lov->lov_tgts[i]->ltd_exp)
270 rc = lov_notify(obd, lov->lov_tgts[i]->ltd_exp->exp_obd,
271 OBD_NOTIFY_CONNECT, (void *)&i);
273 CERROR("%s error sending notify %d\n",
282 static int lov_disconnect_obd(struct obd_device *obd, struct lov_tgt_desc *tgt)
284 struct lov_obd *lov = &obd->u.lov;
285 struct obd_device *osc_obd;
289 osc_obd = class_exp2obd(tgt->ltd_exp);
290 CDEBUG(D_CONFIG, "%s: disconnecting target %s\n",
291 obd->obd_name, osc_obd->obd_name);
293 if (tgt->ltd_active) {
295 lov->desc.ld_active_tgt_count--;
296 tgt->ltd_exp->exp_obd->obd_inactive = 1;
300 /* Pass it on to our clients.
301 * XXX This should be an argument to disconnect,
302 * XXX not a back-door flag on the OBD. Ah well.
304 osc_obd->obd_force = obd->obd_force;
305 osc_obd->obd_fail = obd->obd_fail;
306 osc_obd->obd_no_recov = obd->obd_no_recov;
308 if (obd->obd_type->typ_procsym)
309 lprocfs_remove_proc_entry(osc_obd->obd_name,
310 obd->obd_type->typ_procsym);
313 obd_register_observer(osc_obd, NULL);
315 rc = obd_disconnect(tgt->ltd_exp);
317 CERROR("Target %s disconnect error %d\n",
318 tgt->ltd_uuid.uuid, rc);
326 static int lov_disconnect(struct obd_export *exp)
328 struct obd_device *obd = class_exp2obd(exp);
329 struct lov_obd *lov = &obd->u.lov;
336 /* Only disconnect the underlying layers on the final disconnect. */
338 if (lov->lov_connects != 0) {
339 /* why should there be more than 1 connect? */
340 CERROR("disconnect #%d\n", lov->lov_connects);
344 /* Let's hold another reference so lov_del_obd doesn't spin through
348 for (i = 0; i < lov->desc.ld_tgt_count; i++) {
349 if (lov->lov_tgts[i] && lov->lov_tgts[i]->ltd_exp) {
350 /* Disconnection is the last we know about an obd */
351 lov_del_target(obd, i, 0, lov->lov_tgts[i]->ltd_gen);
356 if (obd->obd_type->typ_procsym)
357 lprocfs_remove(&obd->obd_type->typ_procsym);
360 rc = class_disconnect(exp); /* bz 9811 */
366 * -EINVAL : UUID can't be found in the LOV's target list
367 * -ENOTCONN: The UUID is found, but the target connection is bad (!)
368 * -EBADF : The UUID is found, but the OBD is the wrong type (!)
369 * any >= 0 : is log target index
371 static int lov_set_osc_active(struct obd_device *obd, struct obd_uuid *uuid,
372 enum obd_notify_event ev)
374 struct lov_obd *lov = &obd->u.lov;
375 struct lov_tgt_desc *tgt;
376 int index, activate, active;
379 CDEBUG(D_INFO, "Searching in lov %p for uuid %s event(%d)\n",
380 lov, uuid->uuid, ev);
383 for (index = 0; index < lov->desc.ld_tgt_count; index++) {
384 tgt = lov->lov_tgts[index];
388 * LU-642, initially inactive OSC could miss the obd_connect,
389 * we make up for it here.
391 if (ev == OBD_NOTIFY_ACTIVATE && tgt->ltd_exp == NULL &&
392 obd_uuid_equals(uuid, &tgt->ltd_uuid)) {
393 struct obd_uuid lov_osc_uuid = {"LOV_OSC_UUID"};
395 obd_connect(NULL, &tgt->ltd_exp, tgt->ltd_obd,
396 &lov_osc_uuid, &lov->lov_ocd, NULL);
401 CDEBUG(D_INFO, "lov idx %d is %s conn "LPX64"\n",
402 index, obd_uuid2str(&tgt->ltd_uuid),
403 tgt->ltd_exp->exp_handle.h_cookie);
404 if (obd_uuid_equals(uuid, &tgt->ltd_uuid))
408 if (index == lov->desc.ld_tgt_count)
409 GOTO(out, index = -EINVAL);
411 if (ev == OBD_NOTIFY_DEACTIVATE || ev == OBD_NOTIFY_ACTIVATE) {
412 activate = (ev == OBD_NOTIFY_ACTIVATE) ? 1 : 0;
414 if (lov->lov_tgts[index]->ltd_activate == activate) {
415 CDEBUG(D_INFO, "OSC %s already %sactivate!\n",
416 uuid->uuid, activate ? "" : "de");
418 lov->lov_tgts[index]->ltd_activate = activate;
419 CDEBUG(D_CONFIG, "%sactivate OSC %s\n",
420 activate ? "" : "de", obd_uuid2str(uuid));
423 } else if (ev == OBD_NOTIFY_INACTIVE || ev == OBD_NOTIFY_ACTIVE) {
424 active = (ev == OBD_NOTIFY_ACTIVE) ? 1 : 0;
426 if (lov->lov_tgts[index]->ltd_active == active) {
427 CDEBUG(D_INFO, "OSC %s already %sactive!\n",
428 uuid->uuid, active ? "" : "in");
431 CDEBUG(D_CONFIG, "Marking OSC %s %sactive\n",
432 obd_uuid2str(uuid), active ? "" : "in");
435 lov->lov_tgts[index]->ltd_active = active;
437 lov->desc.ld_active_tgt_count++;
438 lov->lov_tgts[index]->ltd_exp->exp_obd->obd_inactive = 0;
440 lov->desc.ld_active_tgt_count--;
441 lov->lov_tgts[index]->ltd_exp->exp_obd->obd_inactive = 1;
444 CERROR("Unknown event(%d) for uuid %s", ev, uuid->uuid);
452 static int lov_notify(struct obd_device *obd, struct obd_device *watched,
453 enum obd_notify_event ev, void *data)
456 struct lov_obd *lov = &obd->u.lov;
459 down_read(&lov->lov_notify_lock);
460 if (!lov->lov_connects) {
461 up_read(&lov->lov_notify_lock);
465 if (ev == OBD_NOTIFY_ACTIVE || ev == OBD_NOTIFY_INACTIVE ||
466 ev == OBD_NOTIFY_ACTIVATE || ev == OBD_NOTIFY_DEACTIVATE) {
467 struct obd_uuid *uuid;
471 if (strcmp(watched->obd_type->typ_name, LUSTRE_OSC_NAME)) {
472 up_read(&lov->lov_notify_lock);
473 CERROR("unexpected notification of %s %s!\n",
474 watched->obd_type->typ_name,
478 uuid = &watched->u.cli.cl_target_uuid;
480 /* Set OSC as active before notifying the observer, so the
481 * observer can use the OSC normally.
483 rc = lov_set_osc_active(obd, uuid, ev);
485 up_read(&lov->lov_notify_lock);
486 CERROR("event(%d) of %s failed: %d\n", ev,
487 obd_uuid2str(uuid), rc);
490 /* active event should be pass lov target index as data */
494 /* Pass the notification up the chain. */
496 rc = obd_notify_observer(obd, watched, ev, data);
498 /* NULL watched means all osc's in the lov (only for syncs) */
499 /* sync event should be send lov idx as data */
500 struct lov_obd *lov = &obd->u.lov;
504 is_sync = (ev == OBD_NOTIFY_SYNC) ||
505 (ev == OBD_NOTIFY_SYNC_NONBLOCK);
508 for (i = 0; i < lov->desc.ld_tgt_count; i++) {
509 if (!lov->lov_tgts[i])
512 /* don't send sync event if target not
513 * connected/activated */
514 if (is_sync && !lov->lov_tgts[i]->ltd_active)
517 rc = obd_notify_observer(obd, lov->lov_tgts[i]->ltd_obd,
520 CERROR("%s: notify %s of %s failed %d\n",
522 obd->obd_observer->obd_name,
523 lov->lov_tgts[i]->ltd_obd->obd_name,
530 up_read(&lov->lov_notify_lock);
534 static int lov_add_target(struct obd_device *obd, struct obd_uuid *uuidp,
535 __u32 index, int gen, int active)
537 struct lov_obd *lov = &obd->u.lov;
538 struct lov_tgt_desc *tgt;
539 struct obd_device *tgt_obd;
543 CDEBUG(D_CONFIG, "uuid:%s idx:%d gen:%d active:%d\n",
544 uuidp->uuid, index, gen, active);
547 CERROR("request to add OBD %s with invalid generation: %d\n",
552 tgt_obd = class_find_client_obd(uuidp, LUSTRE_OSC_NAME,
557 mutex_lock(&lov->lov_lock);
559 if ((index < lov->lov_tgt_size) && (lov->lov_tgts[index] != NULL)) {
560 tgt = lov->lov_tgts[index];
561 CERROR("UUID %s already assigned at LOV target index %d\n",
562 obd_uuid2str(&tgt->ltd_uuid), index);
563 mutex_unlock(&lov->lov_lock);
567 if (index >= lov->lov_tgt_size) {
568 /* We need to reallocate the lov target array. */
569 struct lov_tgt_desc **newtgts, **old = NULL;
570 __u32 newsize, oldsize = 0;
572 newsize = max(lov->lov_tgt_size, (__u32)2);
573 while (newsize < index + 1)
574 newsize = newsize << 1;
575 OBD_ALLOC(newtgts, sizeof(*newtgts) * newsize);
576 if (newtgts == NULL) {
577 mutex_unlock(&lov->lov_lock);
581 if (lov->lov_tgt_size) {
582 memcpy(newtgts, lov->lov_tgts, sizeof(*newtgts) *
585 oldsize = lov->lov_tgt_size;
588 lov->lov_tgts = newtgts;
589 lov->lov_tgt_size = newsize;
592 OBD_FREE(old, sizeof(*old) * oldsize);
594 CDEBUG(D_CONFIG, "tgts: %p size: %d\n",
595 lov->lov_tgts, lov->lov_tgt_size);
600 mutex_unlock(&lov->lov_lock);
604 rc = lov_ost_pool_add(&lov->lov_packed, index, lov->lov_tgt_size);
606 mutex_unlock(&lov->lov_lock);
611 tgt->ltd_uuid = *uuidp;
612 tgt->ltd_obd = tgt_obd;
613 /* XXX - add a sanity check on the generation number. */
615 tgt->ltd_index = index;
616 tgt->ltd_activate = active;
617 lov->lov_tgts[index] = tgt;
618 if (index >= lov->desc.ld_tgt_count)
619 lov->desc.ld_tgt_count = index + 1;
621 mutex_unlock(&lov->lov_lock);
623 CDEBUG(D_CONFIG, "idx=%d ltd_gen=%d ld_tgt_count=%d\n",
624 index, tgt->ltd_gen, lov->desc.ld_tgt_count);
626 rc = obd_notify(obd, tgt_obd, OBD_NOTIFY_CREATE, &index);
628 if (lov->lov_connects == 0) {
629 /* lov_connect hasn't been called yet. We'll do the
630 lov_connect_obd on this target when that fn first runs,
631 because we don't know the connect flags yet. */
637 rc = lov_connect_obd(obd, index, active, &lov->lov_ocd);
641 /* connect to administrative disabled ost */
645 if (lov->lov_cache != NULL) {
646 rc = obd_set_info_async(NULL, tgt->ltd_exp,
647 sizeof(KEY_CACHE_SET), KEY_CACHE_SET,
648 sizeof(struct cl_client_cache), lov->lov_cache,
654 rc = lov_notify(obd, tgt->ltd_exp->exp_obd,
655 active ? OBD_NOTIFY_CONNECT : OBD_NOTIFY_INACTIVE,
660 CERROR("add failed (%d), deleting %s\n", rc,
661 obd_uuid2str(&tgt->ltd_uuid));
662 lov_del_target(obd, index, 0, 0);
668 /* Schedule a target for deletion */
669 int lov_del_target(struct obd_device *obd, __u32 index,
670 struct obd_uuid *uuidp, int gen)
672 struct lov_obd *lov = &obd->u.lov;
673 int count = lov->desc.ld_tgt_count;
677 if (index >= count) {
678 CERROR("LOV target index %d >= number of LOV OBDs %d.\n",
683 /* to make sure there's no ongoing lov_notify() now */
684 down_write(&lov->lov_notify_lock);
687 if (!lov->lov_tgts[index]) {
688 CERROR("LOV target at index %d is not setup.\n", index);
689 GOTO(out, rc = -EINVAL);
692 if (uuidp && !obd_uuid_equals(uuidp, &lov->lov_tgts[index]->ltd_uuid)) {
693 CERROR("LOV target UUID %s at index %d doesn't match %s.\n",
694 lov_uuid2str(lov, index), index,
695 obd_uuid2str(uuidp));
696 GOTO(out, rc = -EINVAL);
699 CDEBUG(D_CONFIG, "uuid: %s idx: %d gen: %d exp: %p active: %d\n",
700 lov_uuid2str(lov, index), index,
701 lov->lov_tgts[index]->ltd_gen, lov->lov_tgts[index]->ltd_exp,
702 lov->lov_tgts[index]->ltd_active);
704 lov->lov_tgts[index]->ltd_reap = 1;
705 lov->lov_death_row++;
706 /* we really delete it from obd_putref */
709 up_write(&lov->lov_notify_lock);
714 static void __lov_del_obd(struct obd_device *obd, struct lov_tgt_desc *tgt)
716 struct obd_device *osc_obd;
719 LASSERT(tgt->ltd_reap);
721 osc_obd = class_exp2obd(tgt->ltd_exp);
723 CDEBUG(D_CONFIG, "Removing tgt %s : %s\n",
725 osc_obd ? osc_obd->obd_name : "<no obd>");
728 lov_disconnect_obd(obd, tgt);
732 /* Manual cleanup - no cleanup logs to clean up the osc's. We must
733 do it ourselves. And we can't do it from lov_cleanup,
734 because we just lost our only reference to it. */
736 class_manual_cleanup(osc_obd);
739 void lov_fix_desc_stripe_size(__u64 *val)
741 if (*val < LOV_MIN_STRIPE_SIZE) {
743 LCONSOLE_INFO("Increasing default stripe size to "
745 LOV_DESC_STRIPE_SIZE_DEFAULT);
746 *val = LOV_DESC_STRIPE_SIZE_DEFAULT;
747 } else if (*val & (LOV_MIN_STRIPE_SIZE - 1)) {
748 *val &= ~(LOV_MIN_STRIPE_SIZE - 1);
749 LCONSOLE_WARN("Changing default stripe size to "LPU64" (a "
751 *val, LOV_MIN_STRIPE_SIZE);
755 void lov_fix_desc_stripe_count(__u32 *val)
761 void lov_fix_desc_pattern(__u32 *val)
763 /* from lov_setstripe */
764 if ((*val != 0) && (*val != LOV_PATTERN_RAID0)) {
765 LCONSOLE_WARN("Unknown stripe pattern: %#x\n", *val);
770 void lov_fix_desc_qos_maxage(__u32 *val)
773 *val = LOV_DESC_QOS_MAXAGE_DEFAULT;
776 void lov_fix_desc(struct lov_desc *desc)
778 lov_fix_desc_stripe_size(&desc->ld_default_stripe_size);
779 lov_fix_desc_stripe_count(&desc->ld_default_stripe_count);
780 lov_fix_desc_pattern(&desc->ld_pattern);
781 lov_fix_desc_qos_maxage(&desc->ld_qos_maxage);
784 int lov_setup(struct obd_device *obd, struct lustre_cfg *lcfg)
786 struct lov_desc *desc;
787 struct lov_obd *lov = &obd->u.lov;
789 struct obd_type *type;
794 if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1) {
795 CERROR("LOV setup requires a descriptor\n");
799 desc = (struct lov_desc *)lustre_cfg_buf(lcfg, 1);
801 if (sizeof(*desc) > LUSTRE_CFG_BUFLEN(lcfg, 1)) {
802 CERROR("descriptor size wrong: %d > %d\n",
803 (int)sizeof(*desc), LUSTRE_CFG_BUFLEN(lcfg, 1));
807 if (desc->ld_magic != LOV_DESC_MAGIC) {
808 if (desc->ld_magic == __swab32(LOV_DESC_MAGIC)) {
809 CDEBUG(D_OTHER, "%s: Swabbing lov desc %p\n",
810 obd->obd_name, desc);
811 lustre_swab_lov_desc(desc);
813 CERROR("%s: Bad lov desc magic: %#x\n",
814 obd->obd_name, desc->ld_magic);
821 desc->ld_active_tgt_count = 0;
823 lov->lov_tgt_size = 0;
825 mutex_init(&lov->lov_lock);
826 atomic_set(&lov->lov_refcount, 0);
827 lov->lov_sp_me = LUSTRE_SP_CLI;
829 init_rwsem(&lov->lov_notify_lock);
831 lov->lov_pools_hash_body = cfs_hash_create("POOLS", HASH_POOLS_CUR_BITS,
833 HASH_POOLS_BKT_BITS, 0,
836 &pool_hash_operations,
838 CFS_INIT_LIST_HEAD(&lov->lov_pool_list);
839 lov->lov_pool_count = 0;
840 rc = lov_ost_pool_init(&lov->lov_packed, 0);
845 obd->obd_vars = lprocfs_lov_obd_vars;
846 /* If this is true then both client (lov) and server
847 * (lod) are on the same node. The lod layer if loaded
848 * first will register the lov proc directory. In that
849 * case obd->obd_type->typ_procroot will be not set.
850 * Instead we use type->typ_procsym as the parent. */
851 type = class_search_type(LUSTRE_LOD_NAME);
852 if (type != NULL && type->typ_procsym != NULL) {
853 obd->obd_proc_entry = lprocfs_seq_register(obd->obd_name,
856 if (IS_ERR(obd->obd_proc_entry)) {
857 rc = PTR_ERR(obd->obd_proc_entry);
858 CERROR("error %d setting up lprocfs for %s\n", rc,
860 obd->obd_proc_entry = NULL;
863 rc = lprocfs_seq_obd_setup(obd);
867 rc = lprocfs_seq_create(obd->obd_proc_entry, "target_obd",
868 0444, &lov_proc_target_fops, obd);
870 CWARN("Error adding the target_obd file\n");
872 lov->lov_pool_proc_entry = lprocfs_seq_register("pools",
875 if (IS_ERR(lov->lov_pool_proc_entry)) {
876 rc = PTR_ERR(lov->lov_pool_proc_entry);
877 CERROR("error %d setting up lprocfs for pools\n", rc);
878 lov->lov_pool_proc_entry = NULL;
888 static int lov_precleanup(struct obd_device *obd, enum obd_cleanup_stage stage)
891 struct lov_obd *lov = &obd->u.lov;
896 case OBD_CLEANUP_EARLY: {
898 for (i = 0; i < lov->desc.ld_tgt_count; i++) {
899 if (!lov->lov_tgts[i] || !lov->lov_tgts[i]->ltd_active)
901 obd_precleanup(class_exp2obd(lov->lov_tgts[i]->ltd_exp),
913 static int lov_cleanup(struct obd_device *obd)
915 struct lov_obd *lov = &obd->u.lov;
916 cfs_list_t *pos, *tmp;
917 struct pool_desc *pool;
920 cfs_list_for_each_safe(pos, tmp, &lov->lov_pool_list) {
921 pool = cfs_list_entry(pos, struct pool_desc, pool_list);
922 /* free pool structs */
923 CDEBUG(D_INFO, "delete pool %p\n", pool);
924 /* In the function below, .hs_keycmp resolves to
925 * pool_hashkey_keycmp() */
926 /* coverity[overrun-buffer-val] */
927 lov_pool_del(obd, pool->pool_name);
929 cfs_hash_putref(lov->lov_pools_hash_body);
930 lov_ost_pool_free(&lov->lov_packed);
932 lprocfs_obd_cleanup(obd);
936 for (i = 0; i < lov->desc.ld_tgt_count; i++) {
937 if (!lov->lov_tgts[i])
940 /* Inactive targets may never have connected */
941 if (lov->lov_tgts[i]->ltd_active ||
942 atomic_read(&lov->lov_refcount))
943 /* We should never get here - these
944 * should have been removed in the
946 CERROR("%s: lov tgt %d not cleaned! "
947 "deathrow=%d, lovrc=%d\n",
948 obd->obd_name, i, lov->lov_death_row,
949 atomic_read(&lov->lov_refcount));
950 lov_del_target(obd, i, 0, 0);
953 OBD_FREE(lov->lov_tgts, sizeof(*lov->lov_tgts) *
955 lov->lov_tgt_size = 0;
960 int lov_process_config_base(struct obd_device *obd, struct lustre_cfg *lcfg,
961 __u32 *indexp, int *genp)
963 struct obd_uuid obd_uuid;
968 switch(cmd = lcfg->lcfg_command) {
969 case LCFG_LOV_ADD_OBD:
970 case LCFG_LOV_ADD_INA:
971 case LCFG_LOV_DEL_OBD: {
974 /* lov_modify_tgts add 0:lov_mdsA 1:ost1_UUID 2:0 3:1 */
975 if (LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(obd_uuid.uuid))
976 GOTO(out, rc = -EINVAL);
978 obd_str2uuid(&obd_uuid, lustre_cfg_buf(lcfg, 1));
980 if (sscanf(lustre_cfg_buf(lcfg, 2), "%d", indexp) != 1)
981 GOTO(out, rc = -EINVAL);
982 if (sscanf(lustre_cfg_buf(lcfg, 3), "%d", genp) != 1)
983 GOTO(out, rc = -EINVAL);
986 if (cmd == LCFG_LOV_ADD_OBD)
987 rc = lov_add_target(obd, &obd_uuid, index, gen, 1);
988 else if (cmd == LCFG_LOV_ADD_INA)
989 rc = lov_add_target(obd, &obd_uuid, index, gen, 0);
991 rc = lov_del_target(obd, index, &obd_uuid, gen);
995 struct lov_desc *desc = &(obd->u.lov.desc);
998 GOTO(out, rc = -EINVAL);
1000 rc = class_process_proc_seq_param(PARAM_LOV, obd->obd_vars,
1013 CERROR("Unknown command: %d\n", lcfg->lcfg_command);
1014 GOTO(out, rc = -EINVAL);
1022 static int lov_recreate(struct obd_export *exp, struct obdo *src_oa,
1023 struct lov_stripe_md **ea, struct obd_trans_info *oti)
1025 struct lov_stripe_md *obj_mdp, *lsm;
1026 struct lov_obd *lov = &exp->exp_obd->u.lov;
1031 LASSERT(src_oa->o_valid & OBD_MD_FLFLAGS &&
1032 src_oa->o_flags & OBD_FL_RECREATE_OBJS);
1034 OBD_ALLOC(obj_mdp, sizeof(*obj_mdp));
1035 if (obj_mdp == NULL)
1038 ost_idx = src_oa->o_nlink;
1041 GOTO(out, rc = -EINVAL);
1042 if (ost_idx >= lov->desc.ld_tgt_count ||
1043 !lov->lov_tgts[ost_idx])
1044 GOTO(out, rc = -EINVAL);
1046 for (i = 0; i < lsm->lsm_stripe_count; i++) {
1047 if (lsm->lsm_oinfo[i]->loi_ost_idx == ost_idx) {
1048 if (ostid_id(&lsm->lsm_oinfo[i]->loi_oi) !=
1049 ostid_id(&src_oa->o_oi))
1050 GOTO(out, rc = -EINVAL);
1054 if (i == lsm->lsm_stripe_count)
1055 GOTO(out, rc = -EINVAL);
1057 rc = obd_create(NULL, lov->lov_tgts[ost_idx]->ltd_exp,
1058 src_oa, &obj_mdp, oti);
1060 OBD_FREE(obj_mdp, sizeof(*obj_mdp));
1064 /* the LOV expects oa->o_id to be set to the LOV object id */
1065 static int lov_create(const struct lu_env *env, struct obd_export *exp,
1066 struct obdo *src_oa, struct lov_stripe_md **ea,
1067 struct obd_trans_info *oti)
1069 struct lov_obd *lov;
1073 LASSERT(ea != NULL);
1077 if ((src_oa->o_valid & OBD_MD_FLFLAGS) &&
1078 src_oa->o_flags == OBD_FL_DELORPHAN) {
1079 /* should be used with LOV anymore */
1083 lov = &exp->exp_obd->u.lov;
1084 if (!lov->desc.ld_active_tgt_count)
1087 obd_getref(exp->exp_obd);
1088 /* Recreate a specific object id at the given OST index */
1089 if ((src_oa->o_valid & OBD_MD_FLFLAGS) &&
1090 (src_oa->o_flags & OBD_FL_RECREATE_OBJS)) {
1091 rc = lov_recreate(exp, src_oa, ea, oti);
1094 obd_putref(exp->exp_obd);
1098 #define ASSERT_LSM_MAGIC(lsmp) \
1100 LASSERT((lsmp) != NULL); \
1101 LASSERTF(((lsmp)->lsm_magic == LOV_MAGIC_V1 || \
1102 (lsmp)->lsm_magic == LOV_MAGIC_V3), \
1103 "%p->lsm_magic=%x\n", (lsmp), (lsmp)->lsm_magic); \
1106 static int lov_destroy(const struct lu_env *env, struct obd_export *exp,
1107 struct obdo *oa, struct lov_stripe_md *lsm,
1108 struct obd_trans_info *oti, struct obd_export *md_exp,
1111 struct lov_request_set *set;
1112 struct obd_info oinfo;
1113 struct lov_request *req;
1115 struct lov_obd *lov;
1116 int rc = 0, err = 0;
1119 ASSERT_LSM_MAGIC(lsm);
1121 if (!exp || !exp->exp_obd)
1124 if (oa->o_valid & OBD_MD_FLCOOKIE) {
1126 LASSERT(oti->oti_logcookies);
1129 lov = &exp->exp_obd->u.lov;
1130 obd_getref(exp->exp_obd);
1131 rc = lov_prep_destroy_set(exp, &oinfo, oa, lsm, oti, &set);
1135 cfs_list_for_each (pos, &set->set_list) {
1136 req = cfs_list_entry(pos, struct lov_request, rq_link);
1138 if (oa->o_valid & OBD_MD_FLCOOKIE)
1139 oti->oti_logcookies = set->set_cookies + req->rq_stripe;
1141 err = obd_destroy(env, lov->lov_tgts[req->rq_idx]->ltd_exp,
1142 req->rq_oi.oi_oa, NULL, oti, NULL, capa);
1143 err = lov_update_common_set(set, req, err);
1145 CERROR("%s: destroying objid "DOSTID" subobj "
1146 DOSTID" on OST idx %d: rc = %d\n",
1147 exp->exp_obd->obd_name, POSTID(&oa->o_oi),
1148 POSTID(&req->rq_oi.oi_oa->o_oi),
1156 LASSERT(lsm_op_find(lsm->lsm_magic) != NULL);
1157 rc = lsm_op_find(lsm->lsm_magic)->lsm_destroy(lsm, oa, md_exp);
1159 err = lov_fini_destroy_set(set);
1161 obd_putref(exp->exp_obd);
1162 RETURN(rc ? rc : err);
1165 static int lov_getattr_interpret(struct ptlrpc_request_set *rqset,
1168 struct lov_request_set *lovset = (struct lov_request_set *)data;
1172 /* don't do attribute merge if this aysnc op failed */
1174 atomic_set(&lovset->set_completes, 0);
1175 err = lov_fini_getattr_set(lovset);
1176 RETURN(rc ? rc : err);
1179 static int lov_getattr_async(struct obd_export *exp, struct obd_info *oinfo,
1180 struct ptlrpc_request_set *rqset)
1182 struct lov_request_set *lovset;
1183 struct lov_obd *lov;
1185 struct lov_request *req;
1190 ASSERT_LSM_MAGIC(oinfo->oi_md);
1192 if (!exp || !exp->exp_obd)
1195 lov = &exp->exp_obd->u.lov;
1197 rc = lov_prep_getattr_set(exp, oinfo, &lovset);
1201 CDEBUG(D_INFO, "objid "DOSTID": %ux%u byte stripes\n",
1202 POSTID(&oinfo->oi_md->lsm_oi), oinfo->oi_md->lsm_stripe_count,
1203 oinfo->oi_md->lsm_stripe_size);
1205 cfs_list_for_each(pos, &lovset->set_list) {
1206 req = cfs_list_entry(pos, struct lov_request, rq_link);
1208 CDEBUG(D_INFO, "objid "DOSTID"[%d] has subobj "DOSTID" at idx"
1209 "%u\n", POSTID(&oinfo->oi_oa->o_oi), req->rq_stripe,
1210 POSTID(&req->rq_oi.oi_oa->o_oi), req->rq_idx);
1211 rc = obd_getattr_async(lov->lov_tgts[req->rq_idx]->ltd_exp,
1212 &req->rq_oi, rqset);
1214 CERROR("%s: getattr objid "DOSTID" subobj"
1215 DOSTID" on OST idx %d: rc = %d\n",
1216 exp->exp_obd->obd_name,
1217 POSTID(&oinfo->oi_oa->o_oi),
1218 POSTID(&req->rq_oi.oi_oa->o_oi),
1224 if (!cfs_list_empty(&rqset->set_requests)) {
1226 LASSERT (rqset->set_interpret == NULL);
1227 rqset->set_interpret = lov_getattr_interpret;
1228 rqset->set_arg = (void *)lovset;
1233 atomic_set(&lovset->set_completes, 0);
1234 err = lov_fini_getattr_set(lovset);
1235 RETURN(rc ? rc : err);
1238 static int lov_setattr_interpret(struct ptlrpc_request_set *rqset,
1241 struct lov_request_set *lovset = (struct lov_request_set *)data;
1246 atomic_set(&lovset->set_completes, 0);
1247 err = lov_fini_setattr_set(lovset);
1248 RETURN(rc ? rc : err);
1251 /* If @oti is given, the request goes from MDS and responses from OSTs are not
1252 needed. Otherwise, a client is waiting for responses. */
1253 static int lov_setattr_async(struct obd_export *exp, struct obd_info *oinfo,
1254 struct obd_trans_info *oti,
1255 struct ptlrpc_request_set *rqset)
1257 struct lov_request_set *set;
1258 struct lov_request *req;
1260 struct lov_obd *lov;
1265 ASSERT_LSM_MAGIC(oinfo->oi_md);
1266 if (oinfo->oi_oa->o_valid & OBD_MD_FLCOOKIE) {
1268 LASSERT(oti->oti_logcookies);
1271 if (!exp || !exp->exp_obd)
1274 lov = &exp->exp_obd->u.lov;
1275 rc = lov_prep_setattr_set(exp, oinfo, oti, &set);
1279 CDEBUG(D_INFO, "objid "DOSTID": %ux%u byte stripes\n",
1280 POSTID(&oinfo->oi_md->lsm_oi),
1281 oinfo->oi_md->lsm_stripe_count,
1282 oinfo->oi_md->lsm_stripe_size);
1284 cfs_list_for_each(pos, &set->set_list) {
1285 req = cfs_list_entry(pos, struct lov_request, rq_link);
1287 if (oinfo->oi_oa->o_valid & OBD_MD_FLCOOKIE)
1288 oti->oti_logcookies = set->set_cookies + req->rq_stripe;
1290 CDEBUG(D_INFO, "objid "DOSTID"[%d] has subobj "DOSTID" at idx"
1291 "%u\n", POSTID(&oinfo->oi_oa->o_oi), req->rq_stripe,
1292 POSTID(&req->rq_oi.oi_oa->o_oi), req->rq_idx);
1294 rc = obd_setattr_async(lov->lov_tgts[req->rq_idx]->ltd_exp,
1295 &req->rq_oi, oti, rqset);
1297 CERROR("error: setattr objid "DOSTID" subobj"
1298 DOSTID" on OST idx %d: rc = %d\n",
1299 POSTID(&set->set_oi->oi_oa->o_oi),
1300 POSTID(&req->rq_oi.oi_oa->o_oi),
1306 /* If we are not waiting for responses on async requests, return. */
1307 if (rc || !rqset || cfs_list_empty(&rqset->set_requests)) {
1310 atomic_set(&set->set_completes, 0);
1311 err = lov_fini_setattr_set(set);
1312 RETURN(rc ? rc : err);
1315 LASSERT(rqset->set_interpret == NULL);
1316 rqset->set_interpret = lov_setattr_interpret;
1317 rqset->set_arg = (void *)set;
1322 static int lov_change_cbdata(struct obd_export *exp,
1323 struct lov_stripe_md *lsm, ldlm_iterator_t it,
1326 struct lov_obd *lov;
1330 ASSERT_LSM_MAGIC(lsm);
1332 if (!exp || !exp->exp_obd)
1335 lov = &exp->exp_obd->u.lov;
1336 for (i = 0; i < lsm->lsm_stripe_count; i++) {
1337 struct lov_stripe_md submd;
1338 struct lov_oinfo *loi = lsm->lsm_oinfo[i];
1340 if (!lov->lov_tgts[loi->loi_ost_idx]) {
1341 CDEBUG(D_HA, "lov idx %d NULL \n", loi->loi_ost_idx);
1345 submd.lsm_oi = loi->loi_oi;
1346 submd.lsm_stripe_count = 0;
1347 rc = obd_change_cbdata(lov->lov_tgts[loi->loi_ost_idx]->ltd_exp,
1353 /* find any ldlm lock of the inode in lov
1357 static int lov_find_cbdata(struct obd_export *exp,
1358 struct lov_stripe_md *lsm, ldlm_iterator_t it,
1361 struct lov_obd *lov;
1365 ASSERT_LSM_MAGIC(lsm);
1367 if (!exp || !exp->exp_obd)
1370 lov = &exp->exp_obd->u.lov;
1371 for (i = 0; i < lsm->lsm_stripe_count; i++) {
1372 struct lov_stripe_md submd;
1373 struct lov_oinfo *loi = lsm->lsm_oinfo[i];
1375 if (!lov->lov_tgts[loi->loi_ost_idx]) {
1376 CDEBUG(D_HA, "lov idx %d NULL \n", loi->loi_ost_idx);
1379 submd.lsm_oi = loi->loi_oi;
1380 submd.lsm_stripe_count = 0;
1381 rc = obd_find_cbdata(lov->lov_tgts[loi->loi_ost_idx]->ltd_exp,
1389 int lov_statfs_interpret(struct ptlrpc_request_set *rqset, void *data, int rc)
1391 struct lov_request_set *lovset = (struct lov_request_set *)data;
1396 atomic_set(&lovset->set_completes, 0);
1398 err = lov_fini_statfs_set(lovset);
1399 RETURN(rc ? rc : err);
1402 static int lov_statfs_async(struct obd_export *exp, struct obd_info *oinfo,
1403 __u64 max_age, struct ptlrpc_request_set *rqset)
1405 struct obd_device *obd = class_exp2obd(exp);
1406 struct lov_request_set *set;
1407 struct lov_request *req;
1409 struct lov_obd *lov;
1413 LASSERT(oinfo != NULL);
1414 LASSERT(oinfo->oi_osfs != NULL);
1417 rc = lov_prep_statfs_set(obd, oinfo, &set);
1421 cfs_list_for_each (pos, &set->set_list) {
1422 req = cfs_list_entry(pos, struct lov_request, rq_link);
1423 rc = obd_statfs_async(lov->lov_tgts[req->rq_idx]->ltd_exp,
1424 &req->rq_oi, max_age, rqset);
1429 if (rc || cfs_list_empty(&rqset->set_requests)) {
1432 atomic_set(&set->set_completes, 0);
1433 err = lov_fini_statfs_set(set);
1434 RETURN(rc ? rc : err);
1437 LASSERT(rqset->set_interpret == NULL);
1438 rqset->set_interpret = lov_statfs_interpret;
1439 rqset->set_arg = (void *)set;
1443 static int lov_statfs(const struct lu_env *env, struct obd_export *exp,
1444 struct obd_statfs *osfs, __u64 max_age, __u32 flags)
1446 struct ptlrpc_request_set *set = NULL;
1447 struct obd_info oinfo = { { { 0 } } };
1452 /* for obdclass we forbid using obd_statfs_rqset, but prefer using async
1453 * statfs requests */
1454 set = ptlrpc_prep_set();
1458 oinfo.oi_osfs = osfs;
1459 oinfo.oi_flags = flags;
1460 rc = lov_statfs_async(exp, &oinfo, max_age, set);
1462 rc = ptlrpc_set_wait(set);
1463 ptlrpc_set_destroy(set);
1468 static int lov_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
1469 void *karg, void *uarg)
1471 struct obd_device *obddev = class_exp2obd(exp);
1472 struct lov_obd *lov = &obddev->u.lov;
1473 int i = 0, rc = 0, count = lov->desc.ld_tgt_count;
1474 struct obd_uuid *uuidp;
1478 case IOC_OBD_STATFS: {
1479 struct obd_ioctl_data *data = karg;
1480 struct obd_device *osc_obd;
1481 struct obd_statfs stat_buf = {0};
1485 memcpy(&index, data->ioc_inlbuf2, sizeof(__u32));
1486 if ((index >= count))
1489 if (!lov->lov_tgts[index])
1490 /* Try again with the next index */
1492 if (!lov->lov_tgts[index]->ltd_active)
1495 osc_obd = class_exp2obd(lov->lov_tgts[index]->ltd_exp);
1500 if (copy_to_user(data->ioc_pbuf2, obd2cli_tgt(osc_obd),
1501 min((int)data->ioc_plen2,
1502 (int)sizeof(struct obd_uuid))))
1505 flags = uarg ? *(__u32*)uarg : 0;
1506 /* got statfs data */
1507 rc = obd_statfs(NULL, lov->lov_tgts[index]->ltd_exp, &stat_buf,
1508 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
1512 if (copy_to_user(data->ioc_pbuf1, &stat_buf,
1513 min((int) data->ioc_plen1,
1514 (int) sizeof(stat_buf))))
1518 case OBD_IOC_LOV_GET_CONFIG: {
1519 struct obd_ioctl_data *data;
1520 struct lov_desc *desc;
1525 if (obd_ioctl_getdata(&buf, &len, (void *)uarg))
1528 data = (struct obd_ioctl_data *)buf;
1530 if (sizeof(*desc) > data->ioc_inllen1) {
1531 obd_ioctl_freedata(buf, len);
1535 if (sizeof(uuidp->uuid) * count > data->ioc_inllen2) {
1536 obd_ioctl_freedata(buf, len);
1540 if (sizeof(__u32) * count > data->ioc_inllen3) {
1541 obd_ioctl_freedata(buf, len);
1545 desc = (struct lov_desc *)data->ioc_inlbuf1;
1546 memcpy(desc, &(lov->desc), sizeof(*desc));
1548 uuidp = (struct obd_uuid *)data->ioc_inlbuf2;
1549 genp = (__u32 *)data->ioc_inlbuf3;
1550 /* the uuid will be empty for deleted OSTs */
1551 for (i = 0; i < count; i++, uuidp++, genp++) {
1552 if (!lov->lov_tgts[i])
1554 *uuidp = lov->lov_tgts[i]->ltd_uuid;
1555 *genp = lov->lov_tgts[i]->ltd_gen;
1558 if (copy_to_user((void *)uarg, buf, len))
1560 obd_ioctl_freedata(buf, len);
1563 case LL_IOC_LOV_GETSTRIPE:
1564 rc = lov_getstripe(exp, karg, uarg);
1566 case OBD_IOC_QUOTACTL: {
1567 struct if_quotactl *qctl = karg;
1568 struct lov_tgt_desc *tgt = NULL;
1569 struct obd_quotactl *oqctl;
1571 if (qctl->qc_valid == QC_OSTIDX) {
1572 if (count <= qctl->qc_idx)
1575 tgt = lov->lov_tgts[qctl->qc_idx];
1576 if (!tgt || !tgt->ltd_exp)
1578 } else if (qctl->qc_valid == QC_UUID) {
1579 for (i = 0; i < count; i++) {
1580 tgt = lov->lov_tgts[i];
1582 !obd_uuid_equals(&tgt->ltd_uuid,
1586 if (tgt->ltd_exp == NULL)
1598 LASSERT(tgt && tgt->ltd_exp);
1599 OBD_ALLOC_PTR(oqctl);
1603 QCTL_COPY(oqctl, qctl);
1604 rc = obd_quotactl(tgt->ltd_exp, oqctl);
1606 QCTL_COPY(qctl, oqctl);
1607 qctl->qc_valid = QC_OSTIDX;
1608 qctl->obd_uuid = tgt->ltd_uuid;
1610 OBD_FREE_PTR(oqctl);
1619 for (i = 0; i < count; i++) {
1621 struct obd_device *osc_obd;
1623 /* OST was disconnected */
1624 if (!lov->lov_tgts[i] || !lov->lov_tgts[i]->ltd_exp)
1627 /* ll_umount_begin() sets force flag but for lov, not
1628 * osc. Let's pass it through */
1629 osc_obd = class_exp2obd(lov->lov_tgts[i]->ltd_exp);
1630 osc_obd->obd_force = obddev->obd_force;
1631 err = obd_iocontrol(cmd, lov->lov_tgts[i]->ltd_exp,
1633 if (err == -ENODATA && cmd == OBD_IOC_POLL_QUOTACHECK) {
1636 if (lov->lov_tgts[i]->ltd_active) {
1637 CDEBUG(err == -ENOTTY ?
1638 D_IOCTL : D_WARNING,
1639 "iocontrol OSC %s on OST "
1640 "idx %d cmd %x: err = %d\n",
1641 lov_uuid2str(lov, i),
1658 #define FIEMAP_BUFFER_SIZE 4096
1661 * Non-zero fe_logical indicates that this is a continuation FIEMAP
1662 * call. The local end offset and the device are sent in the first
1663 * fm_extent. This function calculates the stripe number from the index.
1664 * This function returns a stripe_no on which mapping is to be restarted.
1666 * This function returns fm_end_offset which is the in-OST offset at which
1667 * mapping should be restarted. If fm_end_offset=0 is returned then caller
1668 * will re-calculate proper offset in next stripe.
1669 * Note that the first extent is passed to lov_get_info via the value field.
1671 * \param fiemap fiemap request header
1672 * \param lsm striping information for the file
1673 * \param fm_start logical start of mapping
1674 * \param fm_end logical end of mapping
1675 * \param start_stripe starting stripe will be returned in this
1677 obd_size fiemap_calc_fm_end_offset(struct ll_user_fiemap *fiemap,
1678 struct lov_stripe_md *lsm, obd_size fm_start,
1679 obd_size fm_end, int *start_stripe)
1681 obd_size local_end = fiemap->fm_extents[0].fe_logical;
1682 obd_off lun_start, lun_end;
1683 obd_size fm_end_offset;
1684 int stripe_no = -1, i;
1686 if (fiemap->fm_extent_count == 0 ||
1687 fiemap->fm_extents[0].fe_logical == 0)
1690 /* Find out stripe_no from ost_index saved in the fe_device */
1691 for (i = 0; i < lsm->lsm_stripe_count; i++) {
1692 if (lsm->lsm_oinfo[i]->loi_ost_idx ==
1693 fiemap->fm_extents[0].fe_device) {
1698 if (stripe_no == -1)
1701 /* If we have finished mapping on previous device, shift logical
1702 * offset to start of next device */
1703 if ((lov_stripe_intersects(lsm, stripe_no, fm_start, fm_end,
1704 &lun_start, &lun_end)) != 0 &&
1705 local_end < lun_end) {
1706 fm_end_offset = local_end;
1707 *start_stripe = stripe_no;
1709 /* This is a special value to indicate that caller should
1710 * calculate offset in next stripe. */
1712 *start_stripe = (stripe_no + 1) % lsm->lsm_stripe_count;
1715 return fm_end_offset;
1719 * We calculate on which OST the mapping will end. If the length of mapping
1720 * is greater than (stripe_size * stripe_count) then the last_stripe will
1721 * will be one just before start_stripe. Else we check if the mapping
1722 * intersects each OST and find last_stripe.
1723 * This function returns the last_stripe and also sets the stripe_count
1724 * over which the mapping is spread
1726 * \param lsm striping information for the file
1727 * \param fm_start logical start of mapping
1728 * \param fm_end logical end of mapping
1729 * \param start_stripe starting stripe of the mapping
1730 * \param stripe_count the number of stripes across which to map is returned
1732 * \retval last_stripe return the last stripe of the mapping
1734 int fiemap_calc_last_stripe(struct lov_stripe_md *lsm, obd_size fm_start,
1735 obd_size fm_end, int start_stripe,
1739 obd_off obd_start, obd_end;
1742 if (fm_end - fm_start > lsm->lsm_stripe_size * lsm->lsm_stripe_count) {
1743 last_stripe = (start_stripe < 1 ? lsm->lsm_stripe_count - 1 :
1745 *stripe_count = lsm->lsm_stripe_count;
1747 for (j = 0, i = start_stripe; j < lsm->lsm_stripe_count;
1748 i = (i + 1) % lsm->lsm_stripe_count, j++) {
1749 if ((lov_stripe_intersects(lsm, i, fm_start, fm_end,
1750 &obd_start, &obd_end)) == 0)
1754 last_stripe = (start_stripe + j - 1) %lsm->lsm_stripe_count;
1761 * Set fe_device and copy extents from local buffer into main return buffer.
1763 * \param fiemap fiemap request header
1764 * \param lcl_fm_ext array of local fiemap extents to be copied
1765 * \param ost_index OST index to be written into the fm_device field for each
1767 * \param ext_count number of extents to be copied
1768 * \param current_extent where to start copying in main extent array
1770 void fiemap_prepare_and_copy_exts(struct ll_user_fiemap *fiemap,
1771 struct ll_fiemap_extent *lcl_fm_ext,
1772 int ost_index, unsigned int ext_count,
1778 for (ext = 0; ext < ext_count; ext++) {
1779 lcl_fm_ext[ext].fe_device = ost_index;
1780 lcl_fm_ext[ext].fe_flags |= FIEMAP_EXTENT_NET;
1783 /* Copy fm_extent's from fm_local to return buffer */
1784 to = (char *)fiemap + fiemap_count_to_size(current_extent);
1785 memcpy(to, lcl_fm_ext, ext_count * sizeof(struct ll_fiemap_extent));
1789 * Break down the FIEMAP request and send appropriate calls to individual OSTs.
1790 * This also handles the restarting of FIEMAP calls in case mapping overflows
1791 * the available number of extents in single call.
1793 static int lov_fiemap(struct lov_obd *lov, __u32 keylen, void *key,
1794 __u32 *vallen, void *val, struct lov_stripe_md *lsm)
1796 struct ll_fiemap_info_key *fm_key = key;
1797 struct ll_user_fiemap *fiemap = val;
1798 struct ll_user_fiemap *fm_local = NULL;
1799 struct ll_fiemap_extent *lcl_fm_ext;
1801 unsigned int get_num_extents = 0;
1802 int ost_index = 0, actual_start_stripe, start_stripe;
1803 obd_size fm_start, fm_end, fm_length, fm_end_offset;
1805 int current_extent = 0, rc = 0, i;
1806 int ost_eof = 0; /* EOF for object */
1807 int ost_done = 0; /* done with required mapping for this OST? */
1809 int cur_stripe = 0, cur_stripe_wrap = 0, stripe_count;
1810 unsigned int buffer_size = FIEMAP_BUFFER_SIZE;
1812 if (!lsm_has_objects(lsm)) {
1813 if (lsm && lsm_is_released(lsm) && (fm_key->fiemap.fm_start <
1814 fm_key->oa.o_size)) {
1815 /* released file, return a minimal FIEMAP if
1816 * request fits in file-size.
1818 fiemap->fm_mapped_extents = 1;
1819 fiemap->fm_extents[0].fe_logical =
1820 fm_key->fiemap.fm_start;
1821 if (fm_key->fiemap.fm_start + fm_key->fiemap.fm_length <
1823 fiemap->fm_extents[0].fe_length =
1824 fm_key->fiemap.fm_length;
1826 fiemap->fm_extents[0].fe_length =
1828 fm_key->fiemap.fm_start;
1829 fiemap->fm_extents[0].fe_flags |=
1830 (FIEMAP_EXTENT_UNKNOWN |
1831 FIEMAP_EXTENT_LAST);
1836 if (fiemap_count_to_size(fm_key->fiemap.fm_extent_count) < buffer_size)
1837 buffer_size = fiemap_count_to_size(fm_key->fiemap.fm_extent_count);
1839 OBD_ALLOC_LARGE(fm_local, buffer_size);
1840 if (fm_local == NULL)
1841 GOTO(out, rc = -ENOMEM);
1842 lcl_fm_ext = &fm_local->fm_extents[0];
1844 count_local = fiemap_size_to_count(buffer_size);
1846 memcpy(fiemap, &fm_key->fiemap, sizeof(*fiemap));
1847 fm_start = fiemap->fm_start;
1848 fm_length = fiemap->fm_length;
1849 /* Calculate start stripe, last stripe and length of mapping */
1850 actual_start_stripe = start_stripe = lov_stripe_number(lsm, fm_start);
1851 fm_end = (fm_length == ~0ULL ? fm_key->oa.o_size :
1852 fm_start + fm_length - 1);
1853 /* If fm_length != ~0ULL but fm_start+fm_length-1 exceeds file size */
1854 if (fm_end > fm_key->oa.o_size)
1855 fm_end = fm_key->oa.o_size;
1857 last_stripe = fiemap_calc_last_stripe(lsm, fm_start, fm_end,
1858 actual_start_stripe, &stripe_count);
1860 fm_end_offset = fiemap_calc_fm_end_offset(fiemap, lsm, fm_start,
1861 fm_end, &start_stripe);
1862 if (fm_end_offset == -EINVAL)
1863 GOTO(out, rc = -EINVAL);
1865 if (fiemap_count_to_size(fiemap->fm_extent_count) > *vallen)
1866 fiemap->fm_extent_count = fiemap_size_to_count(*vallen);
1867 if (fiemap->fm_extent_count == 0) {
1868 get_num_extents = 1;
1871 /* Check each stripe */
1872 for (cur_stripe = start_stripe, i = 0; i < stripe_count;
1873 i++, cur_stripe = (cur_stripe + 1) % lsm->lsm_stripe_count) {
1874 obd_size req_fm_len; /* Stores length of required mapping */
1875 obd_size len_mapped_single_call;
1876 obd_off lun_start, lun_end, obd_object_end;
1877 unsigned int ext_count;
1879 cur_stripe_wrap = cur_stripe;
1881 /* Find out range of mapping on this stripe */
1882 if ((lov_stripe_intersects(lsm, cur_stripe, fm_start, fm_end,
1883 &lun_start, &obd_object_end)) == 0)
1886 /* If this is a continuation FIEMAP call and we are on
1887 * starting stripe then lun_start needs to be set to
1889 if (fm_end_offset != 0 && cur_stripe == start_stripe)
1890 lun_start = fm_end_offset;
1892 if (fm_length != ~0ULL) {
1893 /* Handle fm_start + fm_length overflow */
1894 if (fm_start + fm_length < fm_start)
1895 fm_length = ~0ULL - fm_start;
1896 lun_end = lov_size_to_stripe(lsm, fm_start + fm_length,
1902 if (lun_start == lun_end)
1905 req_fm_len = obd_object_end - lun_start;
1906 fm_local->fm_length = 0;
1907 len_mapped_single_call = 0;
1909 /* If the output buffer is very large and the objects have many
1910 * extents we may need to loop on a single OST repeatedly */
1914 if (get_num_extents == 0) {
1915 /* Don't get too many extents. */
1916 if (current_extent + count_local >
1917 fiemap->fm_extent_count)
1918 count_local = fiemap->fm_extent_count -
1922 lun_start += len_mapped_single_call;
1923 fm_local->fm_length = req_fm_len - len_mapped_single_call;
1924 req_fm_len = fm_local->fm_length;
1925 fm_local->fm_extent_count = count_local;
1926 fm_local->fm_mapped_extents = 0;
1927 fm_local->fm_flags = fiemap->fm_flags;
1929 fm_key->oa.o_oi = lsm->lsm_oinfo[cur_stripe]->loi_oi;
1930 ost_index = lsm->lsm_oinfo[cur_stripe]->loi_ost_idx;
1932 if (ost_index < 0 || ost_index >=lov->desc.ld_tgt_count)
1933 GOTO(out, rc = -EINVAL);
1935 /* If OST is inactive, return extent with UNKNOWN flag */
1936 if (!lov->lov_tgts[ost_index]->ltd_active) {
1937 fm_local->fm_flags |= FIEMAP_EXTENT_LAST;
1938 fm_local->fm_mapped_extents = 1;
1940 lcl_fm_ext[0].fe_logical = lun_start;
1941 lcl_fm_ext[0].fe_length = obd_object_end -
1943 lcl_fm_ext[0].fe_flags |= FIEMAP_EXTENT_UNKNOWN;
1948 fm_local->fm_start = lun_start;
1949 fm_local->fm_flags &= ~FIEMAP_FLAG_DEVICE_ORDER;
1950 memcpy(&fm_key->fiemap, fm_local, sizeof(*fm_local));
1951 *vallen=fiemap_count_to_size(fm_local->fm_extent_count);
1952 rc = obd_get_info(NULL,
1953 lov->lov_tgts[ost_index]->ltd_exp,
1954 keylen, key, vallen, fm_local, lsm);
1959 ext_count = fm_local->fm_mapped_extents;
1960 if (ext_count == 0) {
1962 /* If last stripe has hole at the end,
1963 * then we need to return */
1964 if (cur_stripe_wrap == last_stripe) {
1965 fiemap->fm_mapped_extents = 0;
1971 /* If we just need num of extents then go to next device */
1972 if (get_num_extents) {
1973 current_extent += ext_count;
1977 len_mapped_single_call = lcl_fm_ext[ext_count-1].fe_logical -
1978 lun_start + lcl_fm_ext[ext_count - 1].fe_length;
1980 /* Have we finished mapping on this device? */
1981 if (req_fm_len <= len_mapped_single_call)
1984 /* Clear the EXTENT_LAST flag which can be present on
1986 if (lcl_fm_ext[ext_count-1].fe_flags & FIEMAP_EXTENT_LAST)
1987 lcl_fm_ext[ext_count - 1].fe_flags &=
1988 ~FIEMAP_EXTENT_LAST;
1990 curr_loc = lov_stripe_size(lsm,
1991 lcl_fm_ext[ext_count - 1].fe_logical+
1992 lcl_fm_ext[ext_count - 1].fe_length,
1994 if (curr_loc >= fm_key->oa.o_size)
1997 fiemap_prepare_and_copy_exts(fiemap, lcl_fm_ext,
1998 ost_index, ext_count,
2001 current_extent += ext_count;
2003 /* Ran out of available extents? */
2004 if (current_extent >= fiemap->fm_extent_count)
2006 } while (ost_done == 0 && ost_eof == 0);
2008 if (cur_stripe_wrap == last_stripe)
2013 /* Indicate that we are returning device offsets unless file just has
2015 if (lsm->lsm_stripe_count > 1)
2016 fiemap->fm_flags |= FIEMAP_FLAG_DEVICE_ORDER;
2018 if (get_num_extents)
2019 goto skip_last_device_calc;
2021 /* Check if we have reached the last stripe and whether mapping for that
2022 * stripe is done. */
2023 if (cur_stripe_wrap == last_stripe) {
2024 if (ost_done || ost_eof)
2025 fiemap->fm_extents[current_extent - 1].fe_flags |=
2029 skip_last_device_calc:
2030 fiemap->fm_mapped_extents = current_extent;
2034 OBD_FREE_LARGE(fm_local, buffer_size);
2038 static int lov_get_info(const struct lu_env *env, struct obd_export *exp,
2039 __u32 keylen, void *key, __u32 *vallen, void *val,
2040 struct lov_stripe_md *lsm)
2042 struct obd_device *obddev = class_exp2obd(exp);
2043 struct lov_obd *lov = &obddev->u.lov;
2047 if (!vallen || !val)
2052 if (KEY_IS(KEY_LOCK_TO_STRIPE)) {
2055 struct ldlm_lock *lock;
2057 struct ldlm_res_id *res_id = &data->lock->l_resource->lr_name;
2058 struct lov_oinfo *loi;
2059 __u32 *stripe = val;
2061 if (*vallen < sizeof(*stripe))
2062 GOTO(out, rc = -EFAULT);
2063 *vallen = sizeof(*stripe);
2065 /* XXX This is another one of those bits that will need to
2066 * change if we ever actually support nested LOVs. It uses
2067 * the lock's export to find out which stripe it is. */
2068 /* XXX - it's assumed all the locks for deleted OSTs have
2069 * been cancelled. Also, the export for deleted OSTs will
2070 * be NULL and won't match the lock's export. */
2071 for (i = 0; i < lsm->lsm_stripe_count; i++) {
2072 loi = lsm->lsm_oinfo[i];
2073 if (!lov->lov_tgts[loi->loi_ost_idx])
2075 if (lov->lov_tgts[loi->loi_ost_idx]->ltd_exp ==
2076 data->lock->l_conn_export &&
2077 ostid_res_name_eq(&loi->loi_oi, res_id)) {
2082 LDLM_ERROR(data->lock, "lock on inode without such object");
2083 dump_lsm(D_ERROR, lsm);
2084 GOTO(out, rc = -ENXIO);
2085 } else if (KEY_IS(KEY_LAST_ID)) {
2086 struct obd_id_info *info = val;
2087 __u32 size = sizeof(obd_id);
2088 struct lov_tgt_desc *tgt;
2090 LASSERT(*vallen == sizeof(struct obd_id_info));
2091 tgt = lov->lov_tgts[info->idx];
2093 if (!tgt || !tgt->ltd_active)
2094 GOTO(out, rc = -ESRCH);
2096 rc = obd_get_info(env, tgt->ltd_exp, keylen, key,
2097 &size, info->data, NULL);
2099 } else if (KEY_IS(KEY_LOVDESC)) {
2100 struct lov_desc *desc_ret = val;
2101 *desc_ret = lov->desc;
2104 } else if (KEY_IS(KEY_FIEMAP)) {
2105 rc = lov_fiemap(lov, keylen, key, vallen, val, lsm);
2107 } else if (KEY_IS(KEY_CONNECT_FLAG)) {
2108 struct lov_tgt_desc *tgt;
2109 __u64 ost_idx = *((__u64*)val);
2111 LASSERT(*vallen == sizeof(__u64));
2112 LASSERT(ost_idx < lov->desc.ld_tgt_count);
2113 tgt = lov->lov_tgts[ost_idx];
2115 if (!tgt || !tgt->ltd_exp)
2116 GOTO(out, rc = -ESRCH);
2118 *((__u64 *)val) = exp_connect_flags(tgt->ltd_exp);
2120 } else if (KEY_IS(KEY_TGT_COUNT)) {
2121 *((int *)val) = lov->desc.ld_tgt_count;
2132 static int lov_set_info_async(const struct lu_env *env, struct obd_export *exp,
2133 obd_count keylen, void *key, obd_count vallen,
2134 void *val, struct ptlrpc_request_set *set)
2136 struct obd_device *obddev = class_exp2obd(exp);
2137 struct lov_obd *lov = &obddev->u.lov;
2140 struct lov_tgt_desc *tgt;
2141 unsigned incr, check_uuid,
2142 do_inactive, no_set;
2143 unsigned next_id = 0, mds_con = 0, capa = 0;
2146 incr = check_uuid = do_inactive = no_set = 0;
2149 set = ptlrpc_prep_set();
2155 count = lov->desc.ld_tgt_count;
2157 if (KEY_IS(KEY_NEXT_ID)) {
2158 count = vallen / sizeof(struct obd_id_info);
2159 vallen = sizeof(obd_id);
2160 incr = sizeof(struct obd_id_info);
2163 } else if (KEY_IS(KEY_CHECKSUM)) {
2165 } else if (KEY_IS(KEY_EVICT_BY_NID)) {
2166 /* use defaults: do_inactive = incr = 0; */
2167 } else if (KEY_IS(KEY_MDS_CONN)) {
2169 } else if (KEY_IS(KEY_CAPA_KEY)) {
2171 } else if (KEY_IS(KEY_CACHE_SET)) {
2172 LASSERT(lov->lov_cache == NULL);
2173 lov->lov_cache = val;
2177 for (i = 0; i < count; i++, val = (char *)val + incr) {
2179 tgt = lov->lov_tgts[((struct obd_id_info*)val)->idx];
2181 tgt = lov->lov_tgts[i];
2183 /* OST was disconnected */
2184 if (!tgt || !tgt->ltd_exp)
2187 /* OST is inactive and we don't want inactive OSCs */
2188 if (!tgt->ltd_active && !do_inactive)
2192 struct mds_group_info *mgi;
2194 LASSERT(vallen == sizeof(*mgi));
2195 mgi = (struct mds_group_info *)val;
2197 /* Only want a specific OSC */
2198 if (mgi->uuid && !obd_uuid_equals(mgi->uuid,
2202 err = obd_set_info_async(env, tgt->ltd_exp,
2203 keylen, key, sizeof(int),
2205 } else if (next_id) {
2206 err = obd_set_info_async(env, tgt->ltd_exp,
2207 keylen, key, vallen,
2208 ((struct obd_id_info*)val)->data, set);
2210 struct mds_capa_info *info = (struct mds_capa_info*)val;
2212 LASSERT(vallen == sizeof(*info));
2214 /* Only want a specific OSC */
2216 !obd_uuid_equals(info->uuid, &tgt->ltd_uuid))
2219 err = obd_set_info_async(env, tgt->ltd_exp, keylen,
2220 key, sizeof(*info->capa),
2223 /* Only want a specific OSC */
2225 !obd_uuid_equals(val, &tgt->ltd_uuid))
2228 err = obd_set_info_async(env, tgt->ltd_exp,
2229 keylen, key, vallen, val, set);
2238 err = ptlrpc_set_wait(set);
2241 ptlrpc_set_destroy(set);
2246 void lov_stripe_lock(struct lov_stripe_md *md)
2248 LASSERT(md->lsm_lock_owner != current_pid());
2249 spin_lock(&md->lsm_lock);
2250 LASSERT(md->lsm_lock_owner == 0);
2251 md->lsm_lock_owner = current_pid();
2254 void lov_stripe_unlock(struct lov_stripe_md *md)
2256 LASSERT(md->lsm_lock_owner == current_pid());
2257 md->lsm_lock_owner = 0;
2258 spin_unlock(&md->lsm_lock);
2261 static int lov_quotactl(struct obd_device *obd, struct obd_export *exp,
2262 struct obd_quotactl *oqctl)
2264 struct lov_obd *lov = &obd->u.lov;
2265 struct lov_tgt_desc *tgt;
2267 __u64 bhardlimit = 0;
2271 if (oqctl->qc_cmd != LUSTRE_Q_QUOTAON &&
2272 oqctl->qc_cmd != LUSTRE_Q_QUOTAOFF &&
2273 oqctl->qc_cmd != Q_GETOQUOTA &&
2274 oqctl->qc_cmd != Q_INITQUOTA &&
2275 oqctl->qc_cmd != LUSTRE_Q_SETQUOTA &&
2276 oqctl->qc_cmd != Q_FINVALIDATE) {
2277 CERROR("bad quota opc %x for lov obd", oqctl->qc_cmd);
2283 for (i = 0; i < lov->desc.ld_tgt_count; i++) {
2286 tgt = lov->lov_tgts[i];
2291 if (!tgt->ltd_active || tgt->ltd_reap) {
2292 if (oqctl->qc_cmd == Q_GETOQUOTA &&
2293 lov->lov_tgts[i]->ltd_activate) {
2295 CERROR("ost %d is inactive\n", i);
2297 CDEBUG(D_HA, "ost %d is inactive\n", i);
2302 err = obd_quotactl(tgt->ltd_exp, oqctl);
2304 if (tgt->ltd_active && !rc)
2309 if (oqctl->qc_cmd == Q_GETOQUOTA) {
2310 curspace += oqctl->qc_dqblk.dqb_curspace;
2311 bhardlimit += oqctl->qc_dqblk.dqb_bhardlimit;
2316 if (oqctl->qc_cmd == Q_GETOQUOTA) {
2317 oqctl->qc_dqblk.dqb_curspace = curspace;
2318 oqctl->qc_dqblk.dqb_bhardlimit = bhardlimit;
2323 static int lov_quotacheck(struct obd_device *obd, struct obd_export *exp,
2324 struct obd_quotactl *oqctl)
2326 struct lov_obd *lov = &obd->u.lov;
2332 for (i = 0; i < lov->desc.ld_tgt_count; i++) {
2333 if (!lov->lov_tgts[i])
2336 /* Skip quota check on the administratively disabled OSTs. */
2337 if (!lov->lov_tgts[i]->ltd_activate) {
2338 CWARN("lov idx %d was administratively disabled, "
2339 "skip quotacheck on it.\n", i);
2343 if (!lov->lov_tgts[i]->ltd_active) {
2344 CERROR("lov idx %d inactive\n", i);
2350 for (i = 0; i < lov->desc.ld_tgt_count; i++) {
2353 if (!lov->lov_tgts[i] || !lov->lov_tgts[i]->ltd_activate)
2356 err = obd_quotacheck(lov->lov_tgts[i]->ltd_exp, oqctl);
2367 static struct obd_ops lov_obd_ops = {
2368 .o_owner = THIS_MODULE,
2369 .o_setup = lov_setup,
2370 .o_precleanup = lov_precleanup,
2371 .o_cleanup = lov_cleanup,
2372 .o_connect = lov_connect,
2373 .o_disconnect = lov_disconnect,
2374 .o_statfs = lov_statfs,
2375 .o_statfs_async = lov_statfs_async,
2376 .o_packmd = lov_packmd,
2377 .o_unpackmd = lov_unpackmd,
2378 .o_create = lov_create,
2379 .o_destroy = lov_destroy,
2380 .o_getattr_async = lov_getattr_async,
2381 .o_setattr_async = lov_setattr_async,
2382 .o_change_cbdata = lov_change_cbdata,
2383 .o_find_cbdata = lov_find_cbdata,
2384 .o_iocontrol = lov_iocontrol,
2385 .o_get_info = lov_get_info,
2386 .o_set_info_async = lov_set_info_async,
2387 .o_notify = lov_notify,
2388 .o_pool_new = lov_pool_new,
2389 .o_pool_rem = lov_pool_remove,
2390 .o_pool_add = lov_pool_add,
2391 .o_pool_del = lov_pool_del,
2392 .o_getref = lov_getref,
2393 .o_putref = lov_putref,
2394 .o_quotactl = lov_quotactl,
2395 .o_quotacheck = lov_quotacheck,
2398 struct kmem_cache *lov_oinfo_slab;
2400 extern struct lu_kmem_descr lov_caches[];
2402 int __init lov_init(void)
2404 bool enable_proc = true;
2405 struct obd_type *type;
2409 /* print an address of _any_ initialized kernel symbol from this
2410 * module, to allow debugging with gdb that doesn't support data
2411 * symbols from modules.*/
2412 CDEBUG(D_INFO, "Lustre LOV module (%p).\n", &lov_caches);
2414 rc = lu_kmem_init(lov_caches);
2418 lov_oinfo_slab = kmem_cache_create("lov_oinfo",
2419 sizeof(struct lov_oinfo), 0,
2420 SLAB_HWCACHE_ALIGN, NULL);
2421 if (lov_oinfo_slab == NULL) {
2422 lu_kmem_fini(lov_caches);
2426 type = class_search_type(LUSTRE_LOD_NAME);
2427 if (type != NULL && type->typ_procsym != NULL)
2428 enable_proc = false;
2430 rc = class_register_type(&lov_obd_ops, NULL, enable_proc, NULL,
2431 #ifndef HAVE_ONLY_PROCFS_SEQ
2434 LUSTRE_LOV_NAME, &lov_device_type);
2437 kmem_cache_destroy(lov_oinfo_slab);
2438 lu_kmem_fini(lov_caches);
2445 static void /*__exit*/ lov_exit(void)
2447 class_unregister_type(LUSTRE_LOV_NAME);
2448 kmem_cache_destroy(lov_oinfo_slab);
2449 lu_kmem_fini(lov_caches);
2452 MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
2453 MODULE_DESCRIPTION("Lustre Logical Object Volume OBD driver");
2454 MODULE_LICENSE("GPL");
2456 cfs_module(lov, LUSTRE_VERSION_STRING, lov_init, lov_exit);