1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
6 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 only,
10 * as published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License version 2 for more details (a copy is included
16 * in the LICENSE file that accompanied this code).
18 * You should have received a copy of the GNU General Public License
19 * version 2 along with this program; If not, see
20 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
22 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
23 * CA 95054 USA or visit www.sun.com if you need additional information or
29 * Copyright 2008 Sun Microsystems, Inc. All rights reserved
30 * Use is subject to license terms.
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>
45 # define EXPORT_SYMTAB
47 #define DEBUG_SUBSYSTEM S_LOV
49 #include <libcfs/libcfs.h>
51 #include <liblustre.h>
54 #include <obd_support.h>
55 #include <lustre_lib.h>
56 #include <lustre_net.h>
57 #include <lustre/lustre_idl.h>
58 #include <lustre_dlm.h>
59 #include <lustre_mds.h>
60 #include <lustre_debug.h>
61 #include <obd_class.h>
64 #include <lprocfs_status.h>
65 #include <lustre_param.h>
66 #include <cl_object.h>
67 #include <lustre/ll_fiemap.h>
69 #include "lov_internal.h"
72 /* Keep a refcount of lov->tgt usage to prevent racing with addition/deletion.
73 Any function that expects lov_tgts to remain stationary must take a ref. */
74 void lov_getref(struct obd_device *obd)
76 struct lov_obd *lov = &obd->u.lov;
78 /* nobody gets through here until lov_putref is done */
79 mutex_down(&lov->lov_lock);
80 atomic_inc(&lov->lov_refcount);
81 mutex_up(&lov->lov_lock);
85 static void __lov_del_obd(struct obd_device *obd, struct lov_tgt_desc *tgt);
87 void lov_putref(struct obd_device *obd)
89 struct lov_obd *lov = &obd->u.lov;
91 mutex_down(&lov->lov_lock);
92 /* ok to dec to 0 more than once -- ltd_exp's will be null */
93 if (atomic_dec_and_test(&lov->lov_refcount) && lov->lov_death_row) {
96 struct lov_tgt_desc *tgt, *n;
97 CDEBUG(D_CONFIG, "destroying %d lov targets\n",
99 for (i = 0; i < lov->desc.ld_tgt_count; i++) {
100 tgt = lov->lov_tgts[i];
102 if (!tgt || !tgt->ltd_reap)
104 list_add(&tgt->ltd_kill, &kill);
105 /* XXX - right now there is a dependency on ld_tgt_count
106 * being the maximum tgt index for computing the
107 * mds_max_easize. So we can't shrink it. */
108 lov_ost_pool_remove(&lov->lov_packed, i);
109 lov->lov_tgts[i] = NULL;
110 lov->lov_death_row--;
112 mutex_up(&lov->lov_lock);
114 list_for_each_entry_safe(tgt, n, &kill, ltd_kill) {
115 list_del(&tgt->ltd_kill);
117 __lov_del_obd(obd, tgt);
120 mutex_up(&lov->lov_lock);
124 static int lov_set_osc_active(struct obd_device *obd, struct obd_uuid *uuid,
126 static int lov_notify(struct obd_device *obd, struct obd_device *watched,
127 enum obd_notify_event ev, void *data);
130 #define MAX_STRING_SIZE 128
131 int lov_connect_obd(struct obd_device *obd, __u32 index, int activate,
132 struct obd_connect_data *data)
134 struct lov_obd *lov = &obd->u.lov;
135 struct obd_uuid tgt_uuid;
136 struct obd_device *tgt_obd;
137 struct obd_uuid lov_osc_uuid = { "LOV_OSC_UUID" };
138 struct obd_import *imp;
141 cfs_proc_dir_entry_t *lov_proc_dir;
146 if (!lov->lov_tgts[index])
149 tgt_uuid = lov->lov_tgts[index]->ltd_uuid;
151 tgt_obd = class_find_client_obd(&tgt_uuid, LUSTRE_OSC_NAME,
155 CERROR("Target %s not attached\n", obd_uuid2str(&tgt_uuid));
158 if (!tgt_obd->obd_set_up) {
159 CERROR("Target %s not set up\n", obd_uuid2str(&tgt_uuid));
163 /* override the sp_me from lov */
164 tgt_obd->u.cli.cl_sp_me = lov->lov_sp_me;
166 if (data && (data->ocd_connect_flags & OBD_CONNECT_INDEX))
167 data->ocd_index = index;
170 * Divine LOV knows that OBDs under it are OSCs.
172 imp = tgt_obd->u.cli.cl_import;
175 tgt_obd->obd_no_recov = 0;
176 /* FIXME this is probably supposed to be
177 ptlrpc_set_import_active. Horrible naming. */
178 ptlrpc_activate_import(imp);
181 rc = obd_register_observer(tgt_obd, obd);
183 CERROR("Target %s register_observer error %d\n",
184 obd_uuid2str(&tgt_uuid), rc);
189 if (imp->imp_invalid) {
190 CERROR("not connecting OSC %s; administratively "
191 "disabled\n", obd_uuid2str(&tgt_uuid));
195 rc = obd_connect(NULL, &lov->lov_tgts[index]->ltd_exp, tgt_obd,
196 &lov_osc_uuid, data, NULL);
197 if (rc || !lov->lov_tgts[index]->ltd_exp) {
198 CERROR("Target %s connect error %d\n",
199 obd_uuid2str(&tgt_uuid), rc);
203 lov->lov_tgts[index]->ltd_reap = 0;
205 lov->lov_tgts[index]->ltd_active = 1;
206 lov->desc.ld_active_tgt_count++;
207 lov->lov_tgts[index]->ltd_exp->exp_obd->obd_inactive = 0;
209 CDEBUG(D_CONFIG, "Connected tgt idx %d %s (%s) %sactive\n", index,
210 obd_uuid2str(&tgt_uuid), tgt_obd->obd_name, activate ? "":"in");
213 lov_proc_dir = lprocfs_srch(obd->obd_proc_entry, "target_obds");
215 struct obd_device *osc_obd = lov->lov_tgts[index]->ltd_exp->exp_obd;
216 cfs_proc_dir_entry_t *osc_symlink;
217 char name[MAX_STRING_SIZE];
219 LASSERT(osc_obd != NULL);
220 LASSERT(osc_obd->obd_magic == OBD_DEVICE_MAGIC);
221 LASSERT(osc_obd->obd_type->typ_name != NULL);
222 snprintf(name, MAX_STRING_SIZE, "../../../%s/%s",
223 osc_obd->obd_type->typ_name,
225 osc_symlink = lprocfs_add_symlink(osc_obd->obd_name, lov_proc_dir,
227 if (osc_symlink == NULL) {
228 CERROR("could not register LOV target "
229 "/proc/fs/lustre/%s/%s/target_obds/%s.",
230 obd->obd_type->typ_name, obd->obd_name,
232 lprocfs_remove(&lov_proc_dir);
237 rc = qos_add_tgt(obd, index);
239 CERROR("qos_add_tgt failed %d\n", rc);
244 static int lov_connect(const struct lu_env *env,
245 struct obd_export **exp, struct obd_device *obd,
246 struct obd_uuid *cluuid, struct obd_connect_data *data,
249 struct lov_obd *lov = &obd->u.lov;
250 struct lov_tgt_desc *tgt;
251 struct lustre_handle conn;
255 CDEBUG(D_CONFIG, "connect #%d\n", lov->lov_connects);
257 rc = class_connect(&conn, obd, cluuid);
261 *exp = class_conn2export(&conn);
263 /* Why should there ever be more than 1 connect? */
265 LASSERT(lov->lov_connects == 1);
267 memset(&lov->lov_ocd, 0, sizeof(lov->lov_ocd));
269 lov->lov_ocd = *data;
272 for (i = 0; i < lov->desc.ld_tgt_count; i++) {
273 tgt = lov->lov_tgts[i];
274 if (!tgt || obd_uuid_empty(&tgt->ltd_uuid))
276 /* Flags will be lowest common denominator */
277 rc = lov_connect_obd(obd, i, tgt->ltd_activate, &lov->lov_ocd);
279 CERROR("%s: lov connect tgt %d failed: %d\n",
280 obd->obd_name, i, rc);
283 /* connect to administrative disabled ost */
284 if (!lov->lov_tgts[i]->ltd_exp)
287 rc = lov_notify(obd, lov->lov_tgts[i]->ltd_exp->exp_obd,
288 OBD_NOTIFY_CONNECT, (void *)&i);
290 CERROR("%s error sending notify %d\n",
299 static int lov_disconnect_obd(struct obd_device *obd, struct lov_tgt_desc *tgt)
301 cfs_proc_dir_entry_t *lov_proc_dir;
302 struct lov_obd *lov = &obd->u.lov;
303 struct obd_device *osc_obd;
307 osc_obd = class_exp2obd(tgt->ltd_exp);
308 CDEBUG(D_CONFIG, "%s: disconnecting target %s\n",
309 obd->obd_name, osc_obd->obd_name);
311 if (tgt->ltd_active) {
313 lov->desc.ld_active_tgt_count--;
314 tgt->ltd_exp->exp_obd->obd_inactive = 1;
317 lov_proc_dir = lprocfs_srch(obd->obd_proc_entry, "target_obds");
319 cfs_proc_dir_entry_t *osc_symlink;
321 osc_symlink = lprocfs_srch(lov_proc_dir, osc_obd->obd_name);
323 lprocfs_remove(&osc_symlink);
325 CERROR("/proc/fs/lustre/%s/%s/target_obds/%s missing.",
326 obd->obd_type->typ_name, obd->obd_name,
332 /* Pass it on to our clients.
333 * XXX This should be an argument to disconnect,
334 * XXX not a back-door flag on the OBD. Ah well.
336 osc_obd->obd_force = obd->obd_force;
337 osc_obd->obd_fail = obd->obd_fail;
338 osc_obd->obd_no_recov = obd->obd_no_recov;
341 obd_register_observer(osc_obd, NULL);
343 rc = obd_disconnect(tgt->ltd_exp);
345 CERROR("Target %s disconnect error %d\n",
346 tgt->ltd_uuid.uuid, rc);
350 qos_del_tgt(obd, tgt);
356 static int lov_disconnect(struct obd_export *exp)
358 struct obd_device *obd = class_exp2obd(exp);
359 struct lov_obd *lov = &obd->u.lov;
366 /* Only disconnect the underlying layers on the final disconnect. */
368 if (lov->lov_connects != 0) {
369 /* why should there be more than 1 connect? */
370 CERROR("disconnect #%d\n", lov->lov_connects);
374 /* Let's hold another reference so lov_del_obd doesn't spin through
378 for (i = 0; i < lov->desc.ld_tgt_count; i++) {
379 if (lov->lov_tgts[i] && lov->lov_tgts[i]->ltd_exp) {
380 /* Disconnection is the last we know about an obd */
381 lov_del_target(obd, i, 0, lov->lov_tgts[i]->ltd_gen);
387 rc = class_disconnect(exp); /* bz 9811 */
393 * -EINVAL : UUID can't be found in the LOV's target list
394 * -ENOTCONN: The UUID is found, but the target connection is bad (!)
395 * -EBADF : The UUID is found, but the OBD is the wrong type (!)
396 * any >= 0 : is log target index
398 static int lov_set_osc_active(struct obd_device *obd, struct obd_uuid *uuid,
401 struct lov_obd *lov = &obd->u.lov;
402 struct lov_tgt_desc *tgt;
406 CDEBUG(D_INFO, "Searching in lov %p for uuid %s (activate=%d)\n",
407 lov, uuid->uuid, activate);
410 for (index = 0; index < lov->desc.ld_tgt_count; index++) {
411 tgt = lov->lov_tgts[index];
412 if (!tgt || !tgt->ltd_exp)
415 CDEBUG(D_INFO, "lov idx %d is %s conn "LPX64"\n",
416 index, obd_uuid2str(&tgt->ltd_uuid),
417 tgt->ltd_exp->exp_handle.h_cookie);
418 if (obd_uuid_equals(uuid, &tgt->ltd_uuid))
422 if (index == lov->desc.ld_tgt_count)
423 GOTO(out, index = -EINVAL);
425 if (lov->lov_tgts[index]->ltd_active == activate) {
426 CDEBUG(D_INFO, "OSC %s already %sactive!\n", uuid->uuid,
427 activate ? "" : "in");
431 CDEBUG(D_CONFIG, "Marking OSC %s %sactive\n", obd_uuid2str(uuid),
432 activate ? "" : "in");
434 lov->lov_tgts[index]->ltd_active = activate;
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;
443 /* remove any old qos penalty */
444 lov->lov_tgts[index]->ltd_qos.ltq_penalty = 0;
451 static int lov_notify(struct obd_device *obd, struct obd_device *watched,
452 enum obd_notify_event ev, void *data)
457 if (ev == OBD_NOTIFY_ACTIVE || ev == OBD_NOTIFY_INACTIVE) {
458 struct obd_uuid *uuid;
462 if (strcmp(watched->obd_type->typ_name, LUSTRE_OSC_NAME)) {
463 CERROR("unexpected notification of %s %s!\n",
464 watched->obd_type->typ_name,
468 uuid = &watched->u.cli.cl_target_uuid;
470 /* Set OSC as active before notifying the observer, so the
471 * observer can use the OSC normally.
473 rc = lov_set_osc_active(obd, uuid, ev == OBD_NOTIFY_ACTIVE);
475 CERROR("%sactivation of %s failed: %d\n",
476 (ev == OBD_NOTIFY_ACTIVE) ? "" : "de",
477 obd_uuid2str(uuid), rc);
480 /* active event should be pass lov target index as data */
484 /* Pass the notification up the chain. */
486 rc = obd_notify_observer(obd, watched, ev, data);
488 /* NULL watched means all osc's in the lov (only for syncs) */
489 /* sync event should be send lov idx as data */
490 struct lov_obd *lov = &obd->u.lov;
491 struct obd_device *tgt_obd;
494 for (i = 0; i < lov->desc.ld_tgt_count; i++) {
495 /* don't send sync event if target not
496 * connected/activated */
497 if (!lov->lov_tgts[i] ||
498 !lov->lov_tgts[i]->ltd_active)
501 if ((ev == OBD_NOTIFY_SYNC) ||
502 (ev == OBD_NOTIFY_SYNC_NONBLOCK))
505 tgt_obd = class_exp2obd(lov->lov_tgts[i]->ltd_exp);
507 rc = obd_notify_observer(obd, tgt_obd, ev, data);
509 CERROR("%s: notify %s of %s failed %d\n",
511 obd->obd_observer->obd_name,
512 tgt_obd->obd_name, rc);
522 int lov_add_target(struct obd_device *obd, struct obd_uuid *uuidp,
523 __u32 index, int gen, int active)
525 struct lov_obd *lov = &obd->u.lov;
526 struct lov_tgt_desc *tgt;
530 CDEBUG(D_CONFIG, "uuid:%s idx:%d gen:%d active:%d\n",
531 uuidp->uuid, index, gen, active);
534 CERROR("request to add OBD %s with invalid generation: %d\n",
539 mutex_down(&lov->lov_lock);
541 if ((index < lov->lov_tgt_size) && (lov->lov_tgts[index] != NULL)) {
542 tgt = lov->lov_tgts[index];
543 CERROR("UUID %s already assigned at LOV target index %d\n",
544 obd_uuid2str(&tgt->ltd_uuid), index);
545 mutex_up(&lov->lov_lock);
549 if (index >= lov->lov_tgt_size) {
550 /* We need to reallocate the lov target array. */
551 struct lov_tgt_desc **newtgts, **old = NULL;
552 __u32 newsize, oldsize = 0;
554 newsize = max(lov->lov_tgt_size, (__u32)2);
555 while (newsize < index + 1)
556 newsize = newsize << 1;
557 OBD_ALLOC(newtgts, sizeof(*newtgts) * newsize);
558 if (newtgts == NULL) {
559 mutex_up(&lov->lov_lock);
563 if (lov->lov_tgt_size) {
564 memcpy(newtgts, lov->lov_tgts, sizeof(*newtgts) *
567 oldsize = lov->lov_tgt_size;
570 lov->lov_tgts = newtgts;
571 lov->lov_tgt_size = newsize;
576 OBD_FREE(old, sizeof(*old) * oldsize);
578 CDEBUG(D_CONFIG, "tgts: %p size: %d\n",
579 lov->lov_tgts, lov->lov_tgt_size);
584 mutex_up(&lov->lov_lock);
588 memset(tgt, 0, sizeof(*tgt));
589 tgt->ltd_uuid = *uuidp;
590 /* XXX - add a sanity check on the generation number. */
592 tgt->ltd_index = index;
593 tgt->ltd_activate = active;
594 lov->lov_tgts[index] = tgt;
595 if (index >= lov->desc.ld_tgt_count)
596 lov->desc.ld_tgt_count = index + 1;
598 rc = lov_ost_pool_add(&lov->lov_packed, index, lov->lov_tgt_size);
602 mutex_up(&lov->lov_lock);
604 CDEBUG(D_CONFIG, "idx=%d ltd_gen=%d ld_tgt_count=%d\n",
605 index, tgt->ltd_gen, lov->desc.ld_tgt_count);
607 if (lov->lov_connects == 0) {
608 /* lov_connect hasn't been called yet. We'll do the
609 lov_connect_obd on this target when that fn first runs,
610 because we don't know the connect flags yet. */
616 rc = lov_connect_obd(obd, index, active, &lov->lov_ocd);
620 /* connect to administrative disabled ost */
624 rc = lov_notify(obd, tgt->ltd_exp->exp_obd,
625 active ? OBD_NOTIFY_CONNECT : OBD_NOTIFY_INACTIVE,
630 CERROR("add failed (%d), deleting %s\n", rc,
631 obd_uuid2str(&tgt->ltd_uuid));
632 lov_del_target(obd, index, 0, 0);
638 /* Schedule a target for deletion */
639 int lov_del_target(struct obd_device *obd, __u32 index,
640 struct obd_uuid *uuidp, int gen)
642 struct lov_obd *lov = &obd->u.lov;
643 int count = lov->desc.ld_tgt_count;
647 if (index >= count) {
648 CERROR("LOV target index %d >= number of LOV OBDs %d.\n",
655 if (!lov->lov_tgts[index]) {
656 CERROR("LOV target at index %d is not setup.\n", index);
657 GOTO(out, rc = -EINVAL);
660 if (uuidp && !obd_uuid_equals(uuidp, &lov->lov_tgts[index]->ltd_uuid)) {
661 CERROR("LOV target UUID %s at index %d doesn't match %s.\n",
662 lov_uuid2str(lov, index), index,
663 obd_uuid2str(uuidp));
664 GOTO(out, rc = -EINVAL);
667 CDEBUG(D_CONFIG, "uuid: %s idx: %d gen: %d exp: %p active: %d\n",
668 lov_uuid2str(lov, index), index,
669 lov->lov_tgts[index]->ltd_gen, lov->lov_tgts[index]->ltd_exp,
670 lov->lov_tgts[index]->ltd_active);
672 lov->lov_tgts[index]->ltd_reap = 1;
673 lov->lov_death_row++;
674 /* we really delete it from lov_putref */
681 static void __lov_del_obd(struct obd_device *obd, struct lov_tgt_desc *tgt)
683 struct obd_device *osc_obd;
686 LASSERT(tgt->ltd_reap);
688 osc_obd = class_exp2obd(tgt->ltd_exp);
690 CDEBUG(D_CONFIG, "Removing tgt %s : %s\n",
692 osc_obd ? osc_obd->obd_name : "<no obd>");
695 lov_disconnect_obd(obd, tgt);
699 /* Manual cleanup - no cleanup logs to clean up the osc's. We must
700 do it ourselves. And we can't do it from lov_cleanup,
701 because we just lost our only reference to it. */
703 class_manual_cleanup(osc_obd);
706 void lov_fix_desc_stripe_size(__u64 *val)
708 if (*val < PTLRPC_MAX_BRW_SIZE) {
709 LCONSOLE_WARN("Increasing default stripe size to min %u\n",
710 PTLRPC_MAX_BRW_SIZE);
711 *val = PTLRPC_MAX_BRW_SIZE;
712 } else if (*val & (LOV_MIN_STRIPE_SIZE - 1)) {
713 *val &= ~(LOV_MIN_STRIPE_SIZE - 1);
714 LCONSOLE_WARN("Changing default stripe size to "LPU64" (a "
716 *val, LOV_MIN_STRIPE_SIZE);
720 void lov_fix_desc_stripe_count(__u32 *val)
726 void lov_fix_desc_pattern(__u32 *val)
728 /* from lov_setstripe */
729 if ((*val != 0) && (*val != LOV_PATTERN_RAID0)) {
730 LCONSOLE_WARN("Unknown stripe pattern: %#x\n", *val);
735 void lov_fix_desc_qos_maxage(__u32 *val)
739 *val = QOS_DEFAULT_MAXAGE;
742 void lov_fix_desc(struct lov_desc *desc)
744 lov_fix_desc_stripe_size(&desc->ld_default_stripe_size);
745 lov_fix_desc_stripe_count(&desc->ld_default_stripe_count);
746 lov_fix_desc_pattern(&desc->ld_pattern);
747 lov_fix_desc_qos_maxage(&desc->ld_qos_maxage);
750 int lov_setup(struct obd_device *obd, struct lustre_cfg *lcfg)
752 struct lprocfs_static_vars lvars = { 0 };
753 struct lov_desc *desc;
754 struct lov_obd *lov = &obd->u.lov;
759 if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1) {
760 CERROR("LOV setup requires a descriptor\n");
764 desc = (struct lov_desc *)lustre_cfg_buf(lcfg, 1);
766 if (sizeof(*desc) > LUSTRE_CFG_BUFLEN(lcfg, 1)) {
767 CERROR("descriptor size wrong: %d > %d\n",
768 (int)sizeof(*desc), LUSTRE_CFG_BUFLEN(lcfg, 1));
772 if (desc->ld_magic != LOV_DESC_MAGIC) {
773 if (desc->ld_magic == __swab32(LOV_DESC_MAGIC)) {
774 CDEBUG(D_OTHER, "%s: Swabbing lov desc %p\n",
775 obd->obd_name, desc);
776 lustre_swab_lov_desc(desc);
778 CERROR("%s: Bad lov desc magic: %#x\n",
779 obd->obd_name, desc->ld_magic);
786 /* Because of 64-bit divide/mod operations only work with a 32-bit
787 * divisor in a 32-bit kernel, we cannot support a stripe width
788 * of 4GB or larger on 32-bit CPUs. */
789 count = desc->ld_default_stripe_count;
790 if ((count > 0 ? count : desc->ld_tgt_count) *
791 desc->ld_default_stripe_size > 0xffffffff) {
792 CERROR("LOV: stripe width "LPU64"x%u > 4294967295 bytes\n",
793 desc->ld_default_stripe_size, count);
797 desc->ld_active_tgt_count = 0;
799 lov->lov_tgt_size = 0;
801 sema_init(&lov->lov_lock, 1);
802 atomic_set(&lov->lov_refcount, 0);
803 CFS_INIT_LIST_HEAD(&lov->lov_qos.lq_oss_list);
804 init_rwsem(&lov->lov_qos.lq_rw_sem);
805 lov->lov_sp_me = LUSTRE_SP_CLI;
806 lov->lov_qos.lq_dirty = 1;
807 lov->lov_qos.lq_rr.lqr_dirty = 1;
808 lov->lov_qos.lq_reset = 1;
809 /* Default priority is toward free space balance */
810 lov->lov_qos.lq_prio_free = 232;
811 /* Default threshold for rr (roughly 17%) */
812 lov->lov_qos.lq_threshold_rr = 43;
814 lov->lov_pools_hash_body = lustre_hash_init("POOLS", 7, 7,
815 &pool_hash_operations, 0);
816 CFS_INIT_LIST_HEAD(&lov->lov_pool_list);
817 lov->lov_pool_count = 0;
818 rc = lov_ost_pool_init(&lov->lov_packed, 0);
821 rc = lov_ost_pool_init(&lov->lov_qos.lq_rr.lqr_pool, 0);
823 lov_ost_pool_free(&lov->lov_packed);
827 lprocfs_lov_init_vars(&lvars);
828 lprocfs_obd_setup(obd, lvars.obd_vars);
833 rc = lprocfs_seq_create(obd->obd_proc_entry, "target_obd",
834 0444, &lov_proc_target_fops, obd);
836 CWARN("Error adding the target_obd file\n");
839 lov->lov_pool_proc_entry = lprocfs_register("pools",
846 static int lov_precleanup(struct obd_device *obd, enum obd_cleanup_stage stage)
849 struct lov_obd *lov = &obd->u.lov;
854 case OBD_CLEANUP_EARLY: {
856 for (i = 0; i < lov->desc.ld_tgt_count; i++) {
857 if (!lov->lov_tgts[i] || !lov->lov_tgts[i]->ltd_active)
859 obd_precleanup(class_exp2obd(lov->lov_tgts[i]->ltd_exp),
864 case OBD_CLEANUP_EXPORTS:
865 rc = obd_llog_finish(obd, 0);
867 CERROR("failed to cleanup llogging subsystems\n");
873 static int lov_cleanup(struct obd_device *obd)
875 struct lov_obd *lov = &obd->u.lov;
876 struct list_head *pos, *tmp;
877 struct pool_desc *pool;
879 list_for_each_safe(pos, tmp, &lov->lov_pool_list) {
880 pool = list_entry(pos, struct pool_desc, pool_list);
881 /* free pool structs */
882 CDEBUG(D_INFO, "delete pool %p\n", pool);
883 lov_pool_del(obd, pool->pool_name);
885 lustre_hash_exit(lov->lov_pools_hash_body);
886 lov_ost_pool_free(&(lov->lov_qos.lq_rr.lqr_pool));
887 lov_ost_pool_free(&lov->lov_packed);
892 for (i = 0; i < lov->desc.ld_tgt_count; i++) {
893 if (!lov->lov_tgts[i])
896 /* Inactive targets may never have connected */
897 if (lov->lov_tgts[i]->ltd_active ||
898 atomic_read(&lov->lov_refcount))
899 /* We should never get here - these
900 should have been removed in the
902 CERROR("lov tgt %d not cleaned!"
903 " deathrow=%d, lovrc=%d\n",
904 i, lov->lov_death_row,
905 atomic_read(&lov->lov_refcount));
906 lov_del_target(obd, i, 0, 0);
909 OBD_FREE(lov->lov_tgts, sizeof(*lov->lov_tgts) *
911 lov->lov_tgt_size = 0;
914 /* clear pools parent proc entry only after all pools is killed */
915 lprocfs_obd_cleanup(obd);
920 int lov_process_config_base(struct obd_device *obd, struct lustre_cfg *lcfg,
921 __u32 *indexp, int *genp)
923 struct obd_uuid obd_uuid;
928 switch(cmd = lcfg->lcfg_command) {
929 case LCFG_LOV_ADD_OBD:
930 case LCFG_LOV_ADD_INA:
931 case LCFG_LOV_DEL_OBD: {
934 /* lov_modify_tgts add 0:lov_mdsA 1:ost1_UUID 2:0 3:1 */
935 if (LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(obd_uuid.uuid))
936 GOTO(out, rc = -EINVAL);
938 obd_str2uuid(&obd_uuid, lustre_cfg_buf(lcfg, 1));
940 if (sscanf(lustre_cfg_buf(lcfg, 2), "%d", indexp) != 1)
941 GOTO(out, rc = -EINVAL);
942 if (sscanf(lustre_cfg_buf(lcfg, 3), "%d", genp) != 1)
943 GOTO(out, rc = -EINVAL);
946 if (cmd == LCFG_LOV_ADD_OBD)
947 rc = lov_add_target(obd, &obd_uuid, index, gen, 1);
948 else if (cmd == LCFG_LOV_ADD_INA)
949 rc = lov_add_target(obd, &obd_uuid, index, gen, 0);
951 rc = lov_del_target(obd, index, &obd_uuid, gen);
955 struct lprocfs_static_vars lvars = { 0 };
956 struct lov_desc *desc = &(obd->u.lov.desc);
959 GOTO(out, rc = -EINVAL);
961 lprocfs_lov_init_vars(&lvars);
963 rc = class_process_proc_param(PARAM_LOV, lvars.obd_vars,
976 CERROR("Unknown command: %d\n", lcfg->lcfg_command);
977 GOTO(out, rc = -EINVAL);
986 #define log2(n) ffz(~(n))
989 static int lov_clear_orphans(struct obd_export *export, struct obdo *src_oa,
990 struct lov_stripe_md **ea,
991 struct obd_trans_info *oti)
995 struct obd_uuid *ost_uuid = NULL;
999 LASSERT(src_oa->o_valid & OBD_MD_FLFLAGS &&
1000 src_oa->o_flags == OBD_FL_DELORPHAN);
1002 lov = &export->exp_obd->u.lov;
1008 if (oti->oti_ost_uuid) {
1009 ost_uuid = oti->oti_ost_uuid;
1010 CDEBUG(D_HA, "clearing orphans only for %s\n",
1014 lov_getref(export->exp_obd);
1015 for (i = 0; i < lov->desc.ld_tgt_count; i++) {
1016 struct lov_stripe_md obj_md;
1017 struct lov_stripe_md *obj_mdp = &obj_md;
1018 struct lov_tgt_desc *tgt;
1021 tgt = lov->lov_tgts[i];
1025 /* if called for a specific target, we don't
1026 care if it is not active. */
1027 if (!lov->lov_tgts[i]->ltd_active && ost_uuid == NULL) {
1028 CDEBUG(D_HA, "lov idx %d inactive\n", i);
1032 if (ost_uuid && !obd_uuid_equals(ost_uuid, &tgt->ltd_uuid))
1035 CDEBUG(D_CONFIG,"Clear orphans for %d:%s\n", i,
1036 obd_uuid2str(ost_uuid));
1038 memcpy(tmp_oa, src_oa, sizeof(*tmp_oa));
1040 LASSERT(lov->lov_tgts[i]->ltd_exp);
1041 /* XXX: LOV STACKING: use real "obj_mdp" sub-data */
1042 err = obd_create(lov->lov_tgts[i]->ltd_exp,
1043 tmp_oa, &obj_mdp, oti);
1045 /* This export will be disabled until it is recovered,
1046 and then orphan recovery will be completed. */
1047 CERROR("error in orphan recovery on OST idx %d/%d: "
1048 "rc = %d\n", i, lov->desc.ld_tgt_count, err);
1055 lov_putref(export->exp_obd);
1061 static int lov_recreate(struct obd_export *exp, struct obdo *src_oa,
1062 struct lov_stripe_md **ea, struct obd_trans_info *oti)
1064 struct lov_stripe_md *obj_mdp, *lsm;
1065 struct lov_obd *lov = &exp->exp_obd->u.lov;
1070 LASSERT(src_oa->o_valid & OBD_MD_FLFLAGS &&
1071 src_oa->o_flags & OBD_FL_RECREATE_OBJS);
1073 OBD_ALLOC(obj_mdp, sizeof(*obj_mdp));
1074 if (obj_mdp == NULL)
1077 ost_idx = src_oa->o_nlink;
1080 GOTO(out, rc = -EINVAL);
1081 if (ost_idx >= lov->desc.ld_tgt_count ||
1082 !lov->lov_tgts[ost_idx])
1083 GOTO(out, rc = -EINVAL);
1085 for (i = 0; i < lsm->lsm_stripe_count; i++) {
1086 if (lsm->lsm_oinfo[i]->loi_ost_idx == ost_idx) {
1087 if (lsm->lsm_oinfo[i]->loi_id != src_oa->o_id)
1088 GOTO(out, rc = -EINVAL);
1092 if (i == lsm->lsm_stripe_count)
1093 GOTO(out, rc = -EINVAL);
1095 rc = obd_create(lov->lov_tgts[ost_idx]->ltd_exp, src_oa, &obj_mdp, oti);
1097 OBD_FREE(obj_mdp, sizeof(*obj_mdp));
1101 /* the LOV expects oa->o_id to be set to the LOV object id */
1102 static int lov_create(struct obd_export *exp, struct obdo *src_oa,
1103 struct lov_stripe_md **ea, struct obd_trans_info *oti)
1105 struct lov_obd *lov;
1106 struct obd_info oinfo;
1107 struct lov_request_set *set = NULL;
1108 struct lov_request *req;
1109 struct obd_statfs osfs;
1114 LASSERT(ea != NULL);
1118 if ((src_oa->o_valid & OBD_MD_FLFLAGS) &&
1119 src_oa->o_flags == OBD_FL_DELORPHAN) {
1120 rc = lov_clear_orphans(exp, src_oa, ea, oti);
1124 lov = &exp->exp_obd->u.lov;
1125 if (!lov->desc.ld_active_tgt_count)
1128 lov_getref(exp->exp_obd);
1129 /* Recreate a specific object id at the given OST index */
1130 if ((src_oa->o_valid & OBD_MD_FLFLAGS) &&
1131 (src_oa->o_flags & OBD_FL_RECREATE_OBJS)) {
1132 rc = lov_recreate(exp, src_oa, ea, oti);
1136 maxage = cfs_time_shift_64(-lov->desc.ld_qos_maxage);
1137 obd_statfs_rqset(exp->exp_obd, &osfs, maxage, OBD_STATFS_NODELAY);
1139 rc = lov_prep_create_set(exp, &oinfo, ea, src_oa, oti, &set);
1143 list_for_each_entry(req, &set->set_list, rq_link) {
1144 /* XXX: LOV STACKING: use real "obj_mdp" sub-data */
1145 rc = obd_create(lov->lov_tgts[req->rq_idx]->ltd_exp,
1146 req->rq_oi.oi_oa, &req->rq_oi.oi_md, oti);
1147 lov_update_create_set(set, req, rc);
1149 rc = lov_fini_create_set(set, ea);
1151 lov_putref(exp->exp_obd);
1155 #define ASSERT_LSM_MAGIC(lsmp) \
1157 LASSERT((lsmp) != NULL); \
1158 LASSERTF(((lsmp)->lsm_magic == LOV_MAGIC_V1 || \
1159 (lsmp)->lsm_magic == LOV_MAGIC_V3 || \
1160 (lsmp)->lsm_magic == LOV_MAGIC_JOIN), "%p->lsm_magic=%x\n", \
1161 (lsmp), (lsmp)->lsm_magic); \
1164 static int lov_destroy(struct obd_export *exp, struct obdo *oa,
1165 struct lov_stripe_md *lsm, struct obd_trans_info *oti,
1166 struct obd_export *md_exp, void *capa)
1168 struct lov_request_set *set;
1169 struct obd_info oinfo;
1170 struct lov_request *req;
1171 struct list_head *pos;
1172 struct lov_obd *lov;
1173 int rc = 0, err = 0;
1176 ASSERT_LSM_MAGIC(lsm);
1178 if (!exp || !exp->exp_obd)
1181 if (oa->o_valid & OBD_MD_FLCOOKIE) {
1183 LASSERT(oti->oti_logcookies);
1186 lov = &exp->exp_obd->u.lov;
1187 lov_getref(exp->exp_obd);
1188 rc = lov_prep_destroy_set(exp, &oinfo, oa, lsm, oti, &set);
1192 list_for_each (pos, &set->set_list) {
1193 req = list_entry(pos, struct lov_request, rq_link);
1195 if (oa->o_valid & OBD_MD_FLCOOKIE)
1196 oti->oti_logcookies = set->set_cookies + req->rq_stripe;
1198 err = obd_destroy(lov->lov_tgts[req->rq_idx]->ltd_exp,
1199 req->rq_oi.oi_oa, NULL, oti, NULL, capa);
1200 err = lov_update_common_set(set, req, err);
1202 CERROR("error: destroying objid "LPX64" subobj "
1203 LPX64" on OST idx %d: rc = %d\n",
1204 oa->o_id, req->rq_oi.oi_oa->o_id,
1212 LASSERT(lsm_op_find(lsm->lsm_magic) != NULL);
1213 rc = lsm_op_find(lsm->lsm_magic)->lsm_destroy(lsm, oa, md_exp);
1215 err = lov_fini_destroy_set(set);
1217 lov_putref(exp->exp_obd);
1218 RETURN(rc ? rc : err);
1221 static int lov_getattr(struct obd_export *exp, struct obd_info *oinfo)
1223 struct lov_request_set *set;
1224 struct lov_request *req;
1225 struct list_head *pos;
1226 struct lov_obd *lov;
1227 int err = 0, rc = 0;
1231 ASSERT_LSM_MAGIC(oinfo->oi_md);
1233 if (!exp || !exp->exp_obd)
1236 lov = &exp->exp_obd->u.lov;
1238 rc = lov_prep_getattr_set(exp, oinfo, &set);
1242 list_for_each (pos, &set->set_list) {
1243 req = list_entry(pos, struct lov_request, rq_link);
1245 CDEBUG(D_INFO, "objid "LPX64"[%d] has subobj "LPX64" at idx "
1246 "%u\n", oinfo->oi_oa->o_id, req->rq_stripe,
1247 req->rq_oi.oi_oa->o_id, req->rq_idx);
1249 rc = obd_getattr(lov->lov_tgts[req->rq_idx]->ltd_exp,
1251 err = lov_update_common_set(set, req, rc);
1253 CERROR("error: getattr objid "LPX64" subobj "
1254 LPX64" on OST idx %d: rc = %d\n",
1255 oinfo->oi_oa->o_id, req->rq_oi.oi_oa->o_id,
1261 rc = lov_fini_getattr_set(set);
1267 static int lov_getattr_interpret(struct ptlrpc_request_set *rqset,
1270 struct lov_request_set *lovset = (struct lov_request_set *)data;
1274 /* don't do attribute merge if this aysnc op failed */
1276 lovset->set_completes = 0;
1277 err = lov_fini_getattr_set(lovset);
1278 RETURN(rc ? rc : err);
1281 static int lov_getattr_async(struct obd_export *exp, struct obd_info *oinfo,
1282 struct ptlrpc_request_set *rqset)
1284 struct lov_request_set *lovset;
1285 struct lov_obd *lov;
1286 struct list_head *pos;
1287 struct lov_request *req;
1292 ASSERT_LSM_MAGIC(oinfo->oi_md);
1294 if (!exp || !exp->exp_obd)
1297 lov = &exp->exp_obd->u.lov;
1299 rc = lov_prep_getattr_set(exp, oinfo, &lovset);
1303 CDEBUG(D_INFO, "objid "LPX64": %ux%u byte stripes\n",
1304 oinfo->oi_md->lsm_object_id, oinfo->oi_md->lsm_stripe_count,
1305 oinfo->oi_md->lsm_stripe_size);
1307 list_for_each (pos, &lovset->set_list) {
1308 req = list_entry(pos, struct lov_request, rq_link);
1310 CDEBUG(D_INFO, "objid "LPX64"[%d] has subobj "LPX64" at idx "
1311 "%u\n", oinfo->oi_oa->o_id, req->rq_stripe,
1312 req->rq_oi.oi_oa->o_id, req->rq_idx);
1313 rc = obd_getattr_async(lov->lov_tgts[req->rq_idx]->ltd_exp,
1314 &req->rq_oi, rqset);
1316 CERROR("error: getattr objid "LPX64" subobj "
1317 LPX64" on OST idx %d: rc = %d\n",
1318 oinfo->oi_oa->o_id, req->rq_oi.oi_oa->o_id,
1324 if (!list_empty(&rqset->set_requests)) {
1326 LASSERT (rqset->set_interpret == NULL);
1327 rqset->set_interpret = lov_getattr_interpret;
1328 rqset->set_arg = (void *)lovset;
1333 lovset->set_completes = 0;
1334 err = lov_fini_getattr_set(lovset);
1335 RETURN(rc ? rc : err);
1338 static int lov_setattr(struct obd_export *exp, struct obd_info *oinfo,
1339 struct obd_trans_info *oti)
1341 struct lov_request_set *set;
1342 struct lov_obd *lov;
1343 struct list_head *pos;
1344 struct lov_request *req;
1345 int err = 0, rc = 0;
1349 ASSERT_LSM_MAGIC(oinfo->oi_md);
1351 if (!exp || !exp->exp_obd)
1354 /* for now, we only expect the following updates here */
1355 LASSERT(!(oinfo->oi_oa->o_valid & ~(OBD_MD_FLID | OBD_MD_FLTYPE |
1356 OBD_MD_FLMODE | OBD_MD_FLATIME |
1357 OBD_MD_FLMTIME | OBD_MD_FLCTIME |
1358 OBD_MD_FLFLAGS | OBD_MD_FLSIZE |
1359 OBD_MD_FLGROUP | OBD_MD_FLUID |
1360 OBD_MD_FLGID | OBD_MD_FLFID |
1362 lov = &exp->exp_obd->u.lov;
1363 rc = lov_prep_setattr_set(exp, oinfo, oti, &set);
1367 list_for_each (pos, &set->set_list) {
1368 req = list_entry(pos, struct lov_request, rq_link);
1370 rc = obd_setattr(lov->lov_tgts[req->rq_idx]->ltd_exp,
1372 err = lov_update_setattr_set(set, req, rc);
1374 CERROR("error: setattr objid "LPX64" subobj "
1375 LPX64" on OST idx %d: rc = %d\n",
1376 set->set_oi->oi_oa->o_id,
1377 req->rq_oi.oi_oa->o_id, req->rq_idx, err);
1382 err = lov_fini_setattr_set(set);
1388 static int lov_setattr_interpret(struct ptlrpc_request_set *rqset,
1391 struct lov_request_set *lovset = (struct lov_request_set *)data;
1396 lovset->set_completes = 0;
1397 err = lov_fini_setattr_set(lovset);
1398 RETURN(rc ? rc : err);
1401 /* If @oti is given, the request goes from MDS and responses from OSTs are not
1402 needed. Otherwise, a client is waiting for responses. */
1403 static int lov_setattr_async(struct obd_export *exp, struct obd_info *oinfo,
1404 struct obd_trans_info *oti,
1405 struct ptlrpc_request_set *rqset)
1407 struct lov_request_set *set;
1408 struct lov_request *req;
1409 struct list_head *pos;
1410 struct lov_obd *lov;
1415 ASSERT_LSM_MAGIC(oinfo->oi_md);
1416 if (oinfo->oi_oa->o_valid & OBD_MD_FLCOOKIE) {
1418 LASSERT(oti->oti_logcookies);
1421 if (!exp || !exp->exp_obd)
1424 lov = &exp->exp_obd->u.lov;
1425 rc = lov_prep_setattr_set(exp, oinfo, oti, &set);
1429 CDEBUG(D_INFO, "objid "LPX64": %ux%u byte stripes\n",
1430 oinfo->oi_md->lsm_object_id, oinfo->oi_md->lsm_stripe_count,
1431 oinfo->oi_md->lsm_stripe_size);
1433 list_for_each (pos, &set->set_list) {
1434 req = list_entry(pos, struct lov_request, rq_link);
1436 if (oinfo->oi_oa->o_valid & OBD_MD_FLCOOKIE)
1437 oti->oti_logcookies = set->set_cookies + req->rq_stripe;
1439 CDEBUG(D_INFO, "objid "LPX64"[%d] has subobj "LPX64" at idx "
1440 "%u\n", oinfo->oi_oa->o_id, req->rq_stripe,
1441 req->rq_oi.oi_oa->o_id, req->rq_idx);
1443 rc = obd_setattr_async(lov->lov_tgts[req->rq_idx]->ltd_exp,
1444 &req->rq_oi, oti, rqset);
1446 CERROR("error: setattr objid "LPX64" subobj "
1447 LPX64" on OST idx %d: rc = %d\n",
1448 set->set_oi->oi_oa->o_id,
1449 req->rq_oi.oi_oa->o_id,
1455 /* If we are not waiting for responses on async requests, return. */
1456 if (rc || !rqset || list_empty(&rqset->set_requests)) {
1459 set->set_completes = 0;
1460 err = lov_fini_setattr_set(set);
1461 RETURN(rc ? rc : err);
1464 LASSERT(rqset->set_interpret == NULL);
1465 rqset->set_interpret = lov_setattr_interpret;
1466 rqset->set_arg = (void *)set;
1471 static int lov_punch_interpret(struct ptlrpc_request_set *rqset,
1474 struct lov_request_set *lovset = (struct lov_request_set *)data;
1479 lovset->set_completes = 0;
1480 err = lov_fini_punch_set(lovset);
1481 RETURN(rc ? rc : err);
1484 /* FIXME: maybe we'll just make one node the authoritative attribute node, then
1485 * we can send this 'punch' to just the authoritative node and the nodes
1486 * that the punch will affect. */
1487 static int lov_punch(struct obd_export *exp, struct obd_info *oinfo,
1488 struct obd_trans_info *oti,
1489 struct ptlrpc_request_set *rqset)
1491 struct lov_request_set *set;
1492 struct lov_obd *lov;
1493 struct list_head *pos;
1494 struct lov_request *req;
1499 ASSERT_LSM_MAGIC(oinfo->oi_md);
1501 if (!exp || !exp->exp_obd)
1504 lov = &exp->exp_obd->u.lov;
1505 rc = lov_prep_punch_set(exp, oinfo, oti, &set);
1509 list_for_each (pos, &set->set_list) {
1510 req = list_entry(pos, struct lov_request, rq_link);
1512 rc = obd_punch(lov->lov_tgts[req->rq_idx]->ltd_exp,
1513 &req->rq_oi, NULL, rqset);
1515 CERROR("error: punch objid "LPX64" subobj "LPX64
1516 " on OST idx %d: rc = %d\n",
1517 set->set_oi->oi_oa->o_id,
1518 req->rq_oi.oi_oa->o_id, req->rq_idx, rc);
1523 if (rc || list_empty(&rqset->set_requests)) {
1525 err = lov_fini_punch_set(set);
1526 RETURN(rc ? rc : err);
1529 LASSERT(rqset->set_interpret == NULL);
1530 rqset->set_interpret = lov_punch_interpret;
1531 rqset->set_arg = (void *)set;
1536 static int lov_sync(struct obd_export *exp, struct obdo *oa,
1537 struct lov_stripe_md *lsm, obd_off start, obd_off end,
1540 struct lov_request_set *set;
1541 struct obd_info oinfo;
1542 struct lov_obd *lov;
1543 struct list_head *pos;
1544 struct lov_request *req;
1545 int err = 0, rc = 0;
1548 ASSERT_LSM_MAGIC(lsm);
1553 lov = &exp->exp_obd->u.lov;
1554 rc = lov_prep_sync_set(exp, &oinfo, oa, lsm, start, end, &set);
1558 list_for_each (pos, &set->set_list) {
1559 req = list_entry(pos, struct lov_request, rq_link);
1561 rc = obd_sync(lov->lov_tgts[req->rq_idx]->ltd_exp,
1562 req->rq_oi.oi_oa, NULL,
1563 req->rq_oi.oi_policy.l_extent.start,
1564 req->rq_oi.oi_policy.l_extent.end, capa);
1565 err = lov_update_common_set(set, req, rc);
1567 CERROR("error: fsync objid "LPX64" subobj "LPX64
1568 " on OST idx %d: rc = %d\n",
1569 set->set_oi->oi_oa->o_id,
1570 req->rq_oi.oi_oa->o_id, req->rq_idx, rc);
1575 err = lov_fini_sync_set(set);
1581 static int lov_brw_check(struct lov_obd *lov, struct obd_info *lov_oinfo,
1582 obd_count oa_bufs, struct brw_page *pga)
1584 struct obd_info oinfo = { { { 0 } } };
1587 oinfo.oi_oa = lov_oinfo->oi_oa;
1589 /* The caller just wants to know if there's a chance that this
1590 * I/O can succeed */
1591 for (i = 0; i < oa_bufs; i++) {
1592 int stripe = lov_stripe_number(lov_oinfo->oi_md, pga[i].off);
1593 int ost = lov_oinfo->oi_md->lsm_oinfo[stripe]->loi_ost_idx;
1596 if (!lov_stripe_intersects(lov_oinfo->oi_md, i, pga[i].off,
1597 pga[i].off + pga[i].count - 1,
1601 if (!lov->lov_tgts[ost] || !lov->lov_tgts[ost]->ltd_active) {
1602 CDEBUG(D_HA, "lov idx %d inactive\n", ost);
1606 rc = obd_brw(OBD_BRW_CHECK, lov->lov_tgts[ost]->ltd_exp, &oinfo,
1614 static int lov_brw(int cmd, struct obd_export *exp, struct obd_info *oinfo,
1615 obd_count oa_bufs, struct brw_page *pga,
1616 struct obd_trans_info *oti)
1618 struct lov_request_set *set;
1619 struct lov_request *req;
1620 struct list_head *pos;
1621 struct lov_obd *lov = &exp->exp_obd->u.lov;
1625 ASSERT_LSM_MAGIC(oinfo->oi_md);
1627 if (cmd == OBD_BRW_CHECK) {
1628 rc = lov_brw_check(lov, oinfo, oa_bufs, pga);
1632 rc = lov_prep_brw_set(exp, oinfo, oa_bufs, pga, oti, &set);
1636 list_for_each (pos, &set->set_list) {
1637 struct obd_export *sub_exp;
1638 struct brw_page *sub_pga;
1639 req = list_entry(pos, struct lov_request, rq_link);
1641 sub_exp = lov->lov_tgts[req->rq_idx]->ltd_exp;
1642 sub_pga = set->set_pga + req->rq_pgaidx;
1643 rc = obd_brw(cmd, sub_exp, &req->rq_oi, req->rq_oabufs,
1647 lov_update_common_set(set, req, rc);
1650 err = lov_fini_brw_set(set);
1656 static int lov_enqueue_interpret(struct ptlrpc_request_set *rqset,
1659 struct lov_request_set *lovset = (struct lov_request_set *)data;
1661 rc = lov_fini_enqueue_set(lovset, lovset->set_ei->ei_mode, rc, rqset);
1665 static int lov_enqueue(struct obd_export *exp, struct obd_info *oinfo,
1666 struct ldlm_enqueue_info *einfo,
1667 struct ptlrpc_request_set *rqset)
1669 ldlm_mode_t mode = einfo->ei_mode;
1670 struct lov_request_set *set;
1671 struct lov_request *req;
1672 struct list_head *pos;
1673 struct lov_obd *lov;
1678 ASSERT_LSM_MAGIC(oinfo->oi_md);
1679 LASSERT(mode == (mode & -mode));
1681 /* we should never be asked to replay a lock this way. */
1682 LASSERT((oinfo->oi_flags & LDLM_FL_REPLAY) == 0);
1684 if (!exp || !exp->exp_obd)
1687 lov = &exp->exp_obd->u.lov;
1688 rc = lov_prep_enqueue_set(exp, oinfo, einfo, &set);
1692 list_for_each (pos, &set->set_list) {
1693 req = list_entry(pos, struct lov_request, rq_link);
1695 rc = obd_enqueue(lov->lov_tgts[req->rq_idx]->ltd_exp,
1696 &req->rq_oi, einfo, rqset);
1701 if (rqset && !list_empty(&rqset->set_requests)) {
1703 LASSERT(rqset->set_interpret == NULL);
1704 rqset->set_interpret = lov_enqueue_interpret;
1705 rqset->set_arg = (void *)set;
1709 rc = lov_fini_enqueue_set(set, mode, rc, rqset);
1713 static int lov_change_cbdata(struct obd_export *exp,
1714 struct lov_stripe_md *lsm, ldlm_iterator_t it,
1717 struct lov_obd *lov;
1721 ASSERT_LSM_MAGIC(lsm);
1723 if (!exp || !exp->exp_obd)
1726 LASSERT_MDS_GROUP(lsm->lsm_object_gr);
1728 lov = &exp->exp_obd->u.lov;
1729 for (i = 0; i < lsm->lsm_stripe_count; i++) {
1730 struct lov_stripe_md submd;
1731 struct lov_oinfo *loi = lsm->lsm_oinfo[i];
1733 if (!lov->lov_tgts[loi->loi_ost_idx]) {
1734 CDEBUG(D_HA, "lov idx %d NULL \n", loi->loi_ost_idx);
1738 submd.lsm_object_id = loi->loi_id;
1739 submd.lsm_object_gr = lsm->lsm_object_gr;
1740 submd.lsm_stripe_count = 0;
1741 rc = obd_change_cbdata(lov->lov_tgts[loi->loi_ost_idx]->ltd_exp,
1747 static int lov_cancel(struct obd_export *exp, struct lov_stripe_md *lsm,
1748 __u32 mode, struct lustre_handle *lockh)
1750 struct lov_request_set *set;
1751 struct obd_info oinfo;
1752 struct lov_request *req;
1753 struct list_head *pos;
1754 struct lov_obd *lov;
1755 struct lustre_handle *lov_lockhp;
1756 int err = 0, rc = 0;
1759 ASSERT_LSM_MAGIC(lsm);
1761 if (!exp || !exp->exp_obd)
1764 LASSERT_MDS_GROUP(lsm->lsm_object_gr);
1766 lov = &exp->exp_obd->u.lov;
1767 rc = lov_prep_cancel_set(exp, &oinfo, lsm, mode, lockh, &set);
1771 list_for_each (pos, &set->set_list) {
1772 req = list_entry(pos, struct lov_request, rq_link);
1773 lov_lockhp = set->set_lockh->llh_handles + req->rq_stripe;
1775 rc = obd_cancel(lov->lov_tgts[req->rq_idx]->ltd_exp,
1776 req->rq_oi.oi_md, mode, lov_lockhp);
1777 rc = lov_update_common_set(set, req, rc);
1779 CERROR("error: cancel objid "LPX64" subobj "
1780 LPX64" on OST idx %d: rc = %d\n",
1782 req->rq_oi.oi_md->lsm_object_id,
1788 lov_fini_cancel_set(set);
1792 static int lov_cancel_unused(struct obd_export *exp,
1793 struct lov_stripe_md *lsm,
1794 int flags, void *opaque)
1796 struct lov_obd *lov;
1800 if (!exp || !exp->exp_obd)
1803 lov = &exp->exp_obd->u.lov;
1805 for (i = 0; i < lov->desc.ld_tgt_count; i++) {
1807 if (!lov->lov_tgts[i] || !lov->lov_tgts[i]->ltd_exp)
1810 err = obd_cancel_unused(lov->lov_tgts[i]->ltd_exp, NULL,
1818 ASSERT_LSM_MAGIC(lsm);
1820 LASSERT_MDS_GROUP(lsm->lsm_object_gr);
1821 for (i = 0; i < lsm->lsm_stripe_count; i++) {
1822 struct lov_stripe_md submd;
1823 struct lov_oinfo *loi = lsm->lsm_oinfo[i];
1826 if (!lov->lov_tgts[loi->loi_ost_idx]) {
1827 CDEBUG(D_HA, "lov idx %d NULL\n", loi->loi_ost_idx);
1831 if (!lov->lov_tgts[loi->loi_ost_idx]->ltd_active)
1832 CDEBUG(D_HA, "lov idx %d inactive\n", loi->loi_ost_idx);
1834 submd.lsm_object_id = loi->loi_id;
1835 submd.lsm_object_gr = lsm->lsm_object_gr;
1836 submd.lsm_stripe_count = 0;
1837 err = obd_cancel_unused(lov->lov_tgts[loi->loi_ost_idx]->ltd_exp,
1838 &submd, flags, opaque);
1839 if (err && lov->lov_tgts[loi->loi_ost_idx]->ltd_active) {
1840 CERROR("error: cancel unused objid "LPX64" subobj "LPX64
1841 " on OST idx %d: rc = %d\n", lsm->lsm_object_id,
1842 loi->loi_id, loi->loi_ost_idx, err);
1850 static int lov_statfs_interpret(struct ptlrpc_request_set *rqset,
1853 struct lov_request_set *lovset = (struct lov_request_set *)data;
1858 lovset->set_completes = 0;
1860 err = lov_fini_statfs_set(lovset);
1861 RETURN(rc ? rc : err);
1864 static int lov_statfs_async(struct obd_device *obd, struct obd_info *oinfo,
1865 __u64 max_age, struct ptlrpc_request_set *rqset)
1867 struct lov_request_set *set;
1868 struct lov_request *req;
1869 struct list_head *pos;
1870 struct lov_obd *lov;
1874 LASSERT(oinfo != NULL);
1875 LASSERT(oinfo->oi_osfs != NULL);
1878 rc = lov_prep_statfs_set(obd, oinfo, &set);
1882 list_for_each (pos, &set->set_list) {
1883 struct obd_device *osc_obd;
1885 req = list_entry(pos, struct lov_request, rq_link);
1887 osc_obd = class_exp2obd(lov->lov_tgts[req->rq_idx]->ltd_exp);
1888 rc = obd_statfs_async(osc_obd, &req->rq_oi, max_age, rqset);
1893 if (rc || list_empty(&rqset->set_requests)) {
1896 set->set_completes = 0;
1897 err = lov_fini_statfs_set(set);
1898 RETURN(rc ? rc : err);
1901 LASSERT(rqset->set_interpret == NULL);
1902 rqset->set_interpret = lov_statfs_interpret;
1903 rqset->set_arg = (void *)set;
1907 static int lov_statfs(struct obd_device *obd, struct obd_statfs *osfs,
1908 __u64 max_age, __u32 flags)
1910 struct ptlrpc_request_set *set = NULL;
1911 struct obd_info oinfo = { { { 0 } } };
1916 /* for obdclass we forbid using obd_statfs_rqset, but prefer using async
1917 * statfs requests */
1918 set = ptlrpc_prep_set();
1922 oinfo.oi_osfs = osfs;
1923 oinfo.oi_flags = flags;
1924 rc = lov_statfs_async(obd, &oinfo, max_age, set);
1926 rc = ptlrpc_set_wait(set);
1927 ptlrpc_set_destroy(set);
1932 static int lov_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
1933 void *karg, void *uarg)
1935 struct obd_device *obddev = class_exp2obd(exp);
1936 struct lov_obd *lov = &obddev->u.lov;
1937 int i = 0, rc = 0, count = lov->desc.ld_tgt_count;
1938 struct obd_uuid *uuidp;
1942 case IOC_OBD_STATFS: {
1943 struct obd_ioctl_data *data = karg;
1944 struct obd_device *osc_obd;
1945 struct obd_statfs stat_buf = {0};
1948 memcpy(&index, data->ioc_inlbuf2, sizeof(__u32));
1949 LASSERT(data->ioc_plen1 == sizeof(struct obd_statfs));
1951 if ((index >= count))
1954 if (!lov->lov_tgts[index])
1955 /* Try again with the next index */
1957 if (!lov->lov_tgts[index]->ltd_active)
1960 osc_obd = class_exp2obd(lov->lov_tgts[index]->ltd_exp);
1964 /* got statfs data */
1965 rc = obd_statfs(osc_obd, &stat_buf,
1966 cfs_time_current_64() - HZ, 0);
1969 if (copy_to_user(data->ioc_pbuf1, &stat_buf, data->ioc_plen1))
1972 if (copy_to_user(data->ioc_pbuf2, obd2cli_tgt(osc_obd),
1977 case OBD_IOC_LOV_GET_CONFIG: {
1978 struct obd_ioctl_data *data;
1979 struct lov_desc *desc;
1984 if (obd_ioctl_getdata(&buf, &len, (void *)uarg))
1987 data = (struct obd_ioctl_data *)buf;
1989 if (sizeof(*desc) > data->ioc_inllen1) {
1990 obd_ioctl_freedata(buf, len);
1994 if (sizeof(uuidp->uuid) * count > data->ioc_inllen2) {
1995 obd_ioctl_freedata(buf, len);
1999 if (sizeof(__u32) * count > data->ioc_inllen3) {
2000 obd_ioctl_freedata(buf, len);
2004 desc = (struct lov_desc *)data->ioc_inlbuf1;
2005 memcpy(desc, &(lov->desc), sizeof(*desc));
2007 uuidp = (struct obd_uuid *)data->ioc_inlbuf2;
2008 genp = (__u32 *)data->ioc_inlbuf3;
2009 /* the uuid will be empty for deleted OSTs */
2010 for (i = 0; i < count; i++, uuidp++, genp++) {
2011 if (!lov->lov_tgts[i])
2013 *uuidp = lov->lov_tgts[i]->ltd_uuid;
2014 *genp = lov->lov_tgts[i]->ltd_gen;
2017 if (copy_to_user((void *)uarg, buf, len))
2019 obd_ioctl_freedata(buf, len);
2022 case LL_IOC_LOV_SETSTRIPE:
2023 rc = lov_setstripe(exp, karg, uarg);
2025 case LL_IOC_LOV_GETSTRIPE:
2026 rc = lov_getstripe(exp, karg, uarg);
2028 case LL_IOC_LOV_SETEA:
2029 rc = lov_setea(exp, karg, uarg);
2031 case OBD_IOC_QUOTACTL: {
2032 struct if_quotactl *qctl = karg;
2033 struct lov_tgt_desc *tgt = NULL;
2034 struct obd_quotactl *oqctl;
2036 if (qctl->qc_valid == QC_OSTIDX) {
2037 if (qctl->qc_idx < 0 || count <= qctl->qc_idx)
2040 tgt = lov->lov_tgts[qctl->qc_idx];
2041 if (!tgt || !tgt->ltd_exp)
2043 } else if (qctl->qc_valid == QC_UUID) {
2044 for (i = 0; i < count; i++) {
2045 tgt = lov->lov_tgts[i];
2047 !obd_uuid_equals(&tgt->ltd_uuid,
2051 if (tgt->ltd_exp == NULL)
2063 LASSERT(tgt && tgt->ltd_exp);
2064 OBD_ALLOC_PTR(oqctl);
2068 QCTL_COPY(oqctl, qctl);
2069 rc = obd_quotactl(tgt->ltd_exp, oqctl);
2071 QCTL_COPY(qctl, oqctl);
2072 qctl->qc_valid = QC_OSTIDX;
2073 qctl->obd_uuid = tgt->ltd_uuid;
2075 OBD_FREE_PTR(oqctl);
2084 for (i = 0; i < count; i++) {
2087 /* OST was disconnected */
2088 if (!lov->lov_tgts[i] || !lov->lov_tgts[i]->ltd_exp)
2091 err = obd_iocontrol(cmd, lov->lov_tgts[i]->ltd_exp,
2093 if (err == -ENODATA && cmd == OBD_IOC_POLL_QUOTACHECK) {
2096 if (lov->lov_tgts[i]->ltd_active) {
2097 CDEBUG(err == -ENOTTY ?
2098 D_IOCTL : D_WARNING,
2099 "iocontrol OSC %s on OST "
2100 "idx %d cmd %x: err = %d\n",
2101 lov_uuid2str(lov, i),
2118 #define FIEMAP_BUFFER_SIZE 4096
2121 * Non-zero fe_logical indicates that this is a continuation FIEMAP
2122 * call. The local end offset and the device are sent in the first
2123 * fm_extent. This function calculates the stripe number from the index.
2124 * This function returns a stripe_no on which mapping is to be restarted.
2126 * This function returns fm_end_offset which is the in-OST offset at which
2127 * mapping should be restarted. If fm_end_offset=0 is returned then caller
2128 * will re-calculate proper offset in next stripe.
2129 * Note that the first extent is passed to lov_get_info via the value field.
2131 * \param fiemap fiemap request header
2132 * \param lsm striping information for the file
2133 * \param fm_start logical start of mapping
2134 * \param fm_end logical end of mapping
2135 * \param start_stripe starting stripe will be returned in this
2137 obd_size fiemap_calc_fm_end_offset(struct ll_user_fiemap *fiemap,
2138 struct lov_stripe_md *lsm, obd_size fm_start,
2139 obd_size fm_end, int *start_stripe)
2141 obd_size local_end = fiemap->fm_extents[0].fe_logical;
2142 obd_off lun_start, lun_end;
2143 obd_size fm_end_offset;
2144 int stripe_no = -1, i;
2146 if (fiemap->fm_extent_count == 0 ||
2147 fiemap->fm_extents[0].fe_logical == 0)
2150 /* Find out stripe_no from ost_index saved in the fe_device */
2151 for (i = 0; i < lsm->lsm_stripe_count; i++) {
2152 if (lsm->lsm_oinfo[i]->loi_ost_idx ==
2153 fiemap->fm_extents[0].fe_device) {
2159 /* If we have finished mapping on previous device, shift logical
2160 * offset to start of next device */
2161 if ((lov_stripe_intersects(lsm, stripe_no, fm_start, fm_end,
2162 &lun_start, &lun_end)) != 0 &&
2163 local_end < lun_end) {
2164 fm_end_offset = local_end;
2165 *start_stripe = stripe_no;
2167 /* This is a special value to indicate that caller should
2168 * calculate offset in next stripe. */
2170 *start_stripe = (stripe_no + 1) % lsm->lsm_stripe_count;
2173 return fm_end_offset;
2177 * We calculate on which OST the mapping will end. If the length of mapping
2178 * is greater than (stripe_size * stripe_count) then the last_stripe will
2179 * will be one just before start_stripe. Else we check if the mapping
2180 * intersects each OST and find last_stripe.
2181 * This function returns the last_stripe and also sets the stripe_count
2182 * over which the mapping is spread
2184 * \param lsm striping information for the file
2185 * \param fm_start logical start of mapping
2186 * \param fm_end logical end of mapping
2187 * \param start_stripe starting stripe of the mapping
2188 * \param stripe_count the number of stripes across which to map is returned
2190 * \retval last_stripe return the last stripe of the mapping
2192 int fiemap_calc_last_stripe(struct lov_stripe_md *lsm, obd_size fm_start,
2193 obd_size fm_end, int start_stripe,
2197 obd_off obd_start, obd_end;
2200 if (fm_end - fm_start > lsm->lsm_stripe_size * lsm->lsm_stripe_count) {
2201 last_stripe = (start_stripe < 1 ? lsm->lsm_stripe_count - 1 :
2203 *stripe_count = lsm->lsm_stripe_count;
2205 for (j = 0, i = start_stripe; j < lsm->lsm_stripe_count;
2206 i = (i + 1) % lsm->lsm_stripe_count, j++) {
2207 if ((lov_stripe_intersects(lsm, i, fm_start, fm_end,
2208 &obd_start, &obd_end)) == 0)
2212 last_stripe = (start_stripe + j - 1) %lsm->lsm_stripe_count;
2219 * Set fe_device and copy extents from local buffer into main return buffer.
2221 * \param fiemap fiemap request header
2222 * \param lcl_fm_ext array of local fiemap extents to be copied
2223 * \param ost_index OST index to be written into the fm_device field for each
2225 * \param ext_count number of extents to be copied
2226 * \param current_extent where to start copying in main extent array
2228 void fiemap_prepare_and_copy_exts(struct ll_user_fiemap *fiemap,
2229 struct ll_fiemap_extent *lcl_fm_ext,
2230 int ost_index, unsigned int ext_count,
2236 for (ext = 0; ext < ext_count; ext++) {
2237 lcl_fm_ext[ext].fe_device = ost_index;
2238 lcl_fm_ext[ext].fe_flags |= FIEMAP_EXTENT_NET;
2241 /* Copy fm_extent's from fm_local to return buffer */
2242 to = (char *)fiemap + fiemap_count_to_size(current_extent);
2243 memcpy(to, lcl_fm_ext, ext_count * sizeof(struct ll_fiemap_extent));
2247 * Break down the FIEMAP request and send appropriate calls to individual OSTs.
2248 * This also handles the restarting of FIEMAP calls in case mapping overflows
2249 * the available number of extents in single call.
2251 static int lov_fiemap(struct lov_obd *lov, __u32 keylen, void *key,
2252 __u32 *vallen, void *val, struct lov_stripe_md *lsm)
2254 struct ll_fiemap_info_key *fm_key = key;
2255 struct ll_user_fiemap *fiemap = val;
2256 struct ll_user_fiemap *fm_local = NULL;
2257 struct ll_fiemap_extent *lcl_fm_ext;
2259 unsigned int get_num_extents = 0;
2260 int ost_index = 0, actual_start_stripe, start_stripe;
2261 obd_size fm_start, fm_end, fm_length, fm_end_offset = 0;
2263 int current_extent = 0, rc = 0, i;
2264 int ost_eof = 0; /* EOF for object */
2265 int ost_done = 0; /* done with required mapping for this OST? */
2267 int cur_stripe = 0, cur_stripe_wrap = 0, stripe_count;
2268 unsigned int buffer_size = FIEMAP_BUFFER_SIZE;
2273 if (fiemap_count_to_size(fm_key->fiemap.fm_extent_count) < buffer_size)
2274 buffer_size = fiemap_count_to_size(fm_key->fiemap.fm_extent_count);
2276 OBD_ALLOC(fm_local, buffer_size);
2277 if (fm_local == NULL)
2278 GOTO(out, rc = -ENOMEM);
2279 lcl_fm_ext = &fm_local->fm_extents[0];
2281 count_local = fiemap_size_to_count(buffer_size);
2283 memcpy(fiemap, &fm_key->fiemap, sizeof(*fiemap));
2284 fm_start = fiemap->fm_start;
2285 fm_length = fiemap->fm_length;
2286 /* Calculate start stripe, last stripe and length of mapping */
2287 actual_start_stripe = start_stripe = lov_stripe_number(lsm, fm_start);
2288 fm_end = (fm_length == ~0ULL ? fm_key->oa.o_size :
2289 fm_start + fm_length - 1);
2290 /* If fm_length != ~0ULL but fm_start+fm_length-1 exceeds file size */
2291 if (fm_end > fm_key->oa.o_size)
2292 fm_end = fm_key->oa.o_size;
2294 last_stripe = fiemap_calc_last_stripe(lsm, fm_start, fm_end,
2295 actual_start_stripe, &stripe_count);
2297 fm_end_offset = fiemap_calc_fm_end_offset(fiemap, lsm, fm_start, fm_end,
2300 if (fiemap->fm_extent_count == 0) {
2301 get_num_extents = 1;
2305 /* Check each stripe */
2306 for (cur_stripe = start_stripe, i = 0; i < stripe_count;
2307 i++, cur_stripe = (cur_stripe + 1) % lsm->lsm_stripe_count) {
2308 obd_size req_fm_len; /* Stores length of required mapping */
2309 obd_size len_mapped_single_call;
2310 obd_off lun_start, lun_end, obd_object_end;
2311 unsigned int ext_count;
2313 cur_stripe_wrap = cur_stripe;
2315 /* Find out range of mapping on this stripe */
2316 if ((lov_stripe_intersects(lsm, cur_stripe, fm_start, fm_end,
2317 &lun_start, &obd_object_end)) == 0)
2320 /* If this is a continuation FIEMAP call and we are on
2321 * starting stripe then lun_start needs to be set to
2323 if (fm_end_offset != 0 && cur_stripe == start_stripe)
2324 lun_start = fm_end_offset;
2326 if (fm_length != ~0ULL) {
2327 /* Handle fm_start + fm_length overflow */
2328 if (fm_start + fm_length < fm_start)
2329 fm_length = ~0ULL - fm_start;
2330 lun_end = lov_size_to_stripe(lsm, fm_start + fm_length,
2336 if (lun_start == lun_end)
2339 req_fm_len = obd_object_end - lun_start;
2340 fm_local->fm_length = 0;
2341 len_mapped_single_call = 0;
2343 /* If the output buffer is very large and the objects have many
2344 * extents we may need to loop on a single OST repeatedly */
2348 if (get_num_extents == 0) {
2349 /* Don't get too many extents. */
2350 if (current_extent + count_local >
2351 fiemap->fm_extent_count)
2352 count_local = fiemap->fm_extent_count -
2356 lun_start += len_mapped_single_call;
2357 fm_local->fm_length = req_fm_len - len_mapped_single_call;
2358 req_fm_len = fm_local->fm_length;
2359 fm_local->fm_extent_count = count_local;
2360 fm_local->fm_mapped_extents = 0;
2361 fm_local->fm_flags = fiemap->fm_flags;
2363 fm_key->oa.o_id = lsm->lsm_oinfo[cur_stripe]->loi_id;
2364 ost_index = lsm->lsm_oinfo[cur_stripe]->loi_ost_idx;
2366 if (ost_index < 0 || ost_index >=lov->desc.ld_tgt_count)
2367 GOTO(out, rc = -EINVAL);
2369 /* If OST is inactive, return extent with UNKNOWN flag */
2370 if (!lov->lov_tgts[ost_index]->ltd_active) {
2371 fm_local->fm_flags |= FIEMAP_EXTENT_LAST;
2372 fm_local->fm_mapped_extents = 1;
2374 lcl_fm_ext[0].fe_logical = lun_start;
2375 lcl_fm_ext[0].fe_length = obd_object_end -
2377 lcl_fm_ext[0].fe_flags |= FIEMAP_EXTENT_UNKNOWN;
2382 fm_local->fm_start = lun_start;
2383 fm_local->fm_flags &= ~FIEMAP_FLAG_DEVICE_ORDER;
2384 memcpy(&fm_key->fiemap, fm_local, sizeof(*fm_local));
2385 *vallen=fiemap_count_to_size(fm_local->fm_extent_count);
2386 rc = obd_get_info(lov->lov_tgts[ost_index]->ltd_exp,
2387 keylen, key, vallen, fm_local, lsm);
2392 ext_count = fm_local->fm_mapped_extents;
2393 if (ext_count == 0) {
2395 /* If last stripe has hole at the end,
2396 * then we need to return */
2397 if (cur_stripe_wrap == last_stripe) {
2398 fiemap->fm_mapped_extents = 0;
2404 /* If we just need num of extents then go to next device */
2405 if (get_num_extents) {
2406 current_extent += ext_count;
2410 len_mapped_single_call = lcl_fm_ext[ext_count-1].fe_logical -
2411 lun_start + lcl_fm_ext[ext_count - 1].fe_length;
2413 /* Have we finished mapping on this device? */
2414 if (req_fm_len <= len_mapped_single_call)
2417 /* Clear the EXTENT_LAST flag which can be present on
2419 if (lcl_fm_ext[ext_count-1].fe_flags & FIEMAP_EXTENT_LAST)
2420 lcl_fm_ext[ext_count - 1].fe_flags &=
2421 ~FIEMAP_EXTENT_LAST;
2423 curr_loc = lov_stripe_size(lsm,
2424 lcl_fm_ext[ext_count - 1].fe_logical+
2425 lcl_fm_ext[ext_count - 1].fe_length,
2427 if (curr_loc >= fm_key->oa.o_size)
2430 fiemap_prepare_and_copy_exts(fiemap, lcl_fm_ext,
2431 ost_index, ext_count,
2434 current_extent += ext_count;
2436 /* Ran out of available extents? */
2437 if (current_extent >= fiemap->fm_extent_count)
2439 } while (ost_done == 0 && ost_eof == 0);
2441 if (cur_stripe_wrap == last_stripe)
2446 /* Indicate that we are returning device offsets unless file just has
2448 if (lsm->lsm_stripe_count > 1)
2449 fiemap->fm_flags |= FIEMAP_FLAG_DEVICE_ORDER;
2451 if (get_num_extents)
2452 goto skip_last_device_calc;
2454 /* Check if we have reached the last stripe and whether mapping for that
2455 * stripe is done. */
2456 if (cur_stripe_wrap == last_stripe) {
2457 if (ost_done || ost_eof)
2458 fiemap->fm_extents[current_extent - 1].fe_flags |=
2462 skip_last_device_calc:
2463 fiemap->fm_mapped_extents = current_extent;
2466 OBD_FREE(fm_local, buffer_size);
2470 static int lov_get_info(struct obd_export *exp, __u32 keylen,
2471 void *key, __u32 *vallen, void *val,
2472 struct lov_stripe_md *lsm)
2474 struct obd_device *obddev = class_exp2obd(exp);
2475 struct lov_obd *lov = &obddev->u.lov;
2479 if (!vallen || !val)
2484 if (KEY_IS(KEY_LOCK_TO_STRIPE)) {
2487 struct ldlm_lock *lock;
2489 struct ldlm_res_id *res_id = &data->lock->l_resource->lr_name;
2490 struct lov_oinfo *loi;
2491 __u32 *stripe = val;
2493 if (*vallen < sizeof(*stripe))
2494 GOTO(out, rc = -EFAULT);
2495 *vallen = sizeof(*stripe);
2497 /* XXX This is another one of those bits that will need to
2498 * change if we ever actually support nested LOVs. It uses
2499 * the lock's export to find out which stripe it is. */
2500 /* XXX - it's assumed all the locks for deleted OSTs have
2501 * been cancelled. Also, the export for deleted OSTs will
2502 * be NULL and won't match the lock's export. */
2503 for (i = 0; i < lsm->lsm_stripe_count; i++) {
2504 loi = lsm->lsm_oinfo[i];
2505 if (!lov->lov_tgts[loi->loi_ost_idx])
2507 if (lov->lov_tgts[loi->loi_ost_idx]->ltd_exp ==
2508 data->lock->l_conn_export &&
2509 osc_res_name_eq(loi->loi_id, loi->loi_gr, res_id)) {
2514 LDLM_ERROR(data->lock, "lock on inode without such object");
2515 dump_lsm(D_ERROR, lsm);
2516 GOTO(out, rc = -ENXIO);
2517 } else if (KEY_IS(KEY_LAST_ID)) {
2518 struct obd_id_info *info = val;
2519 __u32 size = sizeof(obd_id);
2520 struct lov_tgt_desc *tgt;
2522 LASSERT(*vallen == sizeof(struct obd_id_info));
2523 tgt = lov->lov_tgts[info->idx];
2525 if (!tgt || !tgt->ltd_active)
2526 GOTO(out, rc = -ESRCH);
2528 rc = obd_get_info(tgt->ltd_exp, keylen, key, &size, info->data, NULL);
2530 } else if (KEY_IS(KEY_LOVDESC)) {
2531 struct lov_desc *desc_ret = val;
2532 *desc_ret = lov->desc;
2535 } else if (KEY_IS(KEY_FIEMAP)) {
2536 rc = lov_fiemap(lov, keylen, key, vallen, val, lsm);
2547 static int lov_set_info_async(struct obd_export *exp, obd_count keylen,
2548 void *key, obd_count vallen, void *val,
2549 struct ptlrpc_request_set *set)
2551 struct obd_device *obddev = class_exp2obd(exp);
2552 struct lov_obd *lov = &obddev->u.lov;
2555 struct lov_tgt_desc *tgt;
2556 unsigned incr, check_uuid,
2557 do_inactive, no_set;
2558 unsigned next_id = 0, mds_con = 0;
2561 incr = check_uuid = do_inactive = no_set = 0;
2564 set = ptlrpc_prep_set();
2570 count = lov->desc.ld_tgt_count;
2572 if (KEY_IS(KEY_NEXT_ID)) {
2573 count = vallen / sizeof(struct obd_id_info);
2574 vallen = sizeof(obd_id);
2575 incr = sizeof(struct obd_id_info);
2578 } else if (KEY_IS(KEY_CHECKSUM)) {
2580 } else if (KEY_IS(KEY_UNLINKED)) {
2581 check_uuid = val ? 1 : 0;
2582 } else if (KEY_IS(KEY_EVICT_BY_NID)) {
2583 /* use defaults: do_inactive = incr = 0; */
2584 } else if (KEY_IS(KEY_MDS_CONN)) {
2588 for (i = 0; i < count; i++, val = (char *)val + incr) {
2590 tgt = lov->lov_tgts[((struct obd_id_info*)val)->idx];
2592 tgt = lov->lov_tgts[i];
2594 /* OST was disconnected */
2595 if (!tgt || !tgt->ltd_exp)
2598 /* OST is inactive and we don't want inactive OSCs */
2599 if (!tgt->ltd_active && !do_inactive)
2603 struct mds_group_info *mgi;
2605 LASSERT(vallen == sizeof(*mgi));
2606 mgi = (struct mds_group_info *)val;
2608 /* Only want a specific OSC */
2609 if (mgi->uuid && !obd_uuid_equals(mgi->uuid,
2613 err = obd_set_info_async(tgt->ltd_exp,
2614 keylen, key, sizeof(int),
2616 } else if (next_id) {
2617 err = obd_set_info_async(tgt->ltd_exp,
2618 keylen, key, vallen,
2619 ((struct obd_id_info*)val)->data, set);
2621 /* Only want a specific OSC */
2623 !obd_uuid_equals(val, &tgt->ltd_uuid))
2626 err = obd_set_info_async(tgt->ltd_exp,
2627 keylen, key, vallen, val, set);
2636 err = ptlrpc_set_wait(set);
2639 ptlrpc_set_destroy(set);
2644 static int lov_checkmd(struct obd_export *exp, struct obd_export *md_exp,
2645 struct lov_stripe_md *lsm)
2653 LASSERT(lsm_op_find(lsm->lsm_magic) != NULL);
2654 rc = lsm_op_find(lsm->lsm_magic)->lsm_revalidate(lsm, md_exp->exp_obd);
2659 int lov_test_and_clear_async_rc(struct lov_stripe_md *lsm)
2664 for (i = 0; i < lsm->lsm_stripe_count; i++) {
2665 struct lov_oinfo *loi = lsm->lsm_oinfo[i];
2666 if (loi->loi_ar.ar_rc && !rc)
2667 rc = loi->loi_ar.ar_rc;
2668 loi->loi_ar.ar_rc = 0;
2672 EXPORT_SYMBOL(lov_test_and_clear_async_rc);
2675 static int lov_extent_calc(struct obd_export *exp, struct lov_stripe_md *lsm,
2676 int cmd, __u64 *offset)
2678 __u32 ssize = lsm->lsm_stripe_size;
2682 do_div(start, ssize);
2683 start = start * ssize;
2685 CDEBUG(D_DLMTRACE, "offset "LPU64", stripe %u, start "LPU64
2686 ", end "LPU64"\n", *offset, ssize, start,
2688 if (cmd == OBD_CALC_STRIPE_END) {
2689 *offset = start + ssize - 1;
2690 } else if (cmd == OBD_CALC_STRIPE_START) {
2699 void lov_stripe_lock(struct lov_stripe_md *md)
2701 LASSERT(md->lsm_lock_owner != cfs_curproc_pid());
2702 spin_lock(&md->lsm_lock);
2703 LASSERT(md->lsm_lock_owner == 0);
2704 md->lsm_lock_owner = cfs_curproc_pid();
2706 EXPORT_SYMBOL(lov_stripe_lock);
2708 void lov_stripe_unlock(struct lov_stripe_md *md)
2710 LASSERT(md->lsm_lock_owner == cfs_curproc_pid());
2711 md->lsm_lock_owner = 0;
2712 spin_unlock(&md->lsm_lock);
2714 EXPORT_SYMBOL(lov_stripe_unlock);
2717 struct obd_ops lov_obd_ops = {
2718 .o_owner = THIS_MODULE,
2719 .o_setup = lov_setup,
2720 .o_precleanup = lov_precleanup,
2721 .o_cleanup = lov_cleanup,
2722 //.o_process_config = lov_process_config,
2723 .o_connect = lov_connect,
2724 .o_disconnect = lov_disconnect,
2725 .o_statfs = lov_statfs,
2726 .o_statfs_async = lov_statfs_async,
2727 .o_packmd = lov_packmd,
2728 .o_unpackmd = lov_unpackmd,
2729 .o_checkmd = lov_checkmd,
2730 .o_create = lov_create,
2731 .o_destroy = lov_destroy,
2732 .o_getattr = lov_getattr,
2733 .o_getattr_async = lov_getattr_async,
2734 .o_setattr = lov_setattr,
2735 .o_setattr_async = lov_setattr_async,
2737 .o_merge_lvb = lov_merge_lvb,
2738 .o_adjust_kms = lov_adjust_kms,
2739 .o_punch = lov_punch,
2741 .o_enqueue = lov_enqueue,
2742 .o_change_cbdata = lov_change_cbdata,
2743 .o_cancel = lov_cancel,
2744 .o_cancel_unused = lov_cancel_unused,
2745 .o_iocontrol = lov_iocontrol,
2746 .o_get_info = lov_get_info,
2747 .o_set_info_async = lov_set_info_async,
2748 .o_extent_calc = lov_extent_calc,
2749 .o_llog_init = lov_llog_init,
2750 .o_llog_finish = lov_llog_finish,
2751 .o_notify = lov_notify,
2752 .o_pool_new = lov_pool_new,
2753 .o_pool_rem = lov_pool_remove,
2754 .o_pool_add = lov_pool_add,
2755 .o_pool_del = lov_pool_del,
2758 static quota_interface_t *quota_interface;
2759 extern quota_interface_t lov_quota_interface;
2761 cfs_mem_cache_t *lov_oinfo_slab;
2763 extern struct lu_kmem_descr lov_caches[];
2765 int __init lov_init(void)
2767 struct lprocfs_static_vars lvars = { 0 };
2771 /* print an address of _any_ initialized kernel symbol from this
2772 * module, to allow debugging with gdb that doesn't support data
2773 * symbols from modules.*/
2774 CDEBUG(D_CONSOLE, "Lustre LOV module (%p).\n", &lov_caches);
2776 rc = lu_kmem_init(lov_caches);
2780 lov_oinfo_slab = cfs_mem_cache_create("lov_oinfo",
2781 sizeof(struct lov_oinfo),
2782 0, SLAB_HWCACHE_ALIGN);
2783 if (lov_oinfo_slab == NULL) {
2784 lu_kmem_fini(lov_caches);
2787 lprocfs_lov_init_vars(&lvars);
2789 request_module("lquota");
2790 quota_interface = PORTAL_SYMBOL_GET(lov_quota_interface);
2791 init_obd_quota_ops(quota_interface, &lov_obd_ops);
2793 rc = class_register_type(&lov_obd_ops, NULL, lvars.module_vars,
2794 LUSTRE_LOV_NAME, &lov_device_type);
2797 if (quota_interface)
2798 PORTAL_SYMBOL_PUT(lov_quota_interface);
2799 rc2 = cfs_mem_cache_destroy(lov_oinfo_slab);
2801 lu_kmem_fini(lov_caches);
2808 static void /*__exit*/ lov_exit(void)
2812 lu_device_type_fini(&lov_device_type);
2813 lu_kmem_fini(lov_caches);
2815 if (quota_interface)
2816 PORTAL_SYMBOL_PUT(lov_quota_interface);
2818 class_unregister_type(LUSTRE_LOV_NAME);
2819 rc = cfs_mem_cache_destroy(lov_oinfo_slab);
2823 MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
2824 MODULE_DESCRIPTION("Lustre Logical Object Volume OBD driver");
2825 MODULE_LICENSE("GPL");
2827 cfs_module(lov, LUSTRE_VERSION_STRING, lov_init, lov_exit);