1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
4 * Copyright (C) 2002-2006 Cluster File Systems, Inc.
5 * Author: Phil Schwan <phil@clusterfs.com>
6 * Peter Braam <braam@clusterfs.com>
7 * Mike Shaver <shaver@clusterfs.com>
8 * Nathan Rutman <nathan@clusterfs.com>
10 * This file is part of the Lustre file system, http://www.lustre.org
11 * Lustre is a trademark of Cluster File Systems, Inc.
13 * You may have signed or agreed to another license before downloading
14 * this software. If so, you are bound by the terms and conditions
15 * of that agreement, and the following does not apply to you. See the
16 * LICENSE file included with this distribution for more information.
18 * If you did not agree to a different license, then this copy of Lustre
19 * is open source software; you can redistribute it and/or modify it
20 * under the terms of version 2 of the GNU General Public License as
21 * published by the Free Software Foundation.
23 * In either case, Lustre is distributed in the hope that it will be
24 * useful, but WITHOUT ANY WARRANTY; without even the implied warranty
25 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
26 * license text for more details.
30 # define EXPORT_SYMTAB
32 #define DEBUG_SUBSYSTEM S_LOV
34 #include <libcfs/libcfs.h>
36 #include <liblustre.h>
39 #include <obd_support.h>
40 #include <lustre_lib.h>
41 #include <lustre_net.h>
42 #include <lustre/lustre_idl.h>
43 #include <lustre_dlm.h>
44 #include <lustre_mds.h>
45 #include <lustre_debug.h>
46 #include <obd_class.h>
49 #include <lprocfs_status.h>
50 #include <lustre_param.h>
52 #include "lov_internal.h"
55 /* Keep a refcount of lov->tgt usage to prevent racing with addition/deletion.
56 Any function that expects lov_tgts to remain stationary must take a ref. */
57 void lov_getref(struct obd_device *obd)
59 struct lov_obd *lov = &obd->u.lov;
61 /* nobody gets through here until lov_putref is done */
62 mutex_down(&lov->lov_lock);
63 atomic_inc(&lov->lov_refcount);
64 mutex_up(&lov->lov_lock);
68 static void __lov_del_obd(struct obd_device *obd, __u32 index);
70 void lov_putref(struct obd_device *obd)
72 struct lov_obd *lov = &obd->u.lov;
73 mutex_down(&lov->lov_lock);
74 /* ok to dec to 0 more than once -- ltd_exp's will be null */
75 if (atomic_dec_and_test(&lov->lov_refcount) && lov->lov_death_row) {
77 CDEBUG(D_CONFIG, "destroying %d lov targets\n",
79 for (i = 0; i < lov->desc.ld_tgt_count; i++) {
80 if (!lov->lov_tgts[i] || !lov->lov_tgts[i]->ltd_reap)
82 /* Disconnect and delete from list */
83 __lov_del_obd(obd, i);
87 mutex_up(&lov->lov_lock);
90 #define MAX_STRING_SIZE 128
91 static int lov_connect_obd(struct obd_device *obd, __u32 index, int activate,
92 struct obd_connect_data *data)
94 struct lov_obd *lov = &obd->u.lov;
95 struct obd_uuid tgt_uuid;
96 struct obd_device *tgt_obd;
97 struct obd_uuid lov_osc_uuid = { "LOV_OSC_UUID" };
98 struct lustre_handle conn = {0, };
99 struct obd_import *imp;
101 cfs_proc_dir_entry_t *lov_proc_dir;
106 if (!lov->lov_tgts[index])
109 tgt_uuid = lov->lov_tgts[index]->ltd_uuid;
110 tgt_obd = class_find_client_obd(&tgt_uuid, LUSTRE_OSC_NAME,
114 CERROR("Target %s not attached\n", obd_uuid2str(&tgt_uuid));
118 if (!tgt_obd->obd_set_up) {
119 CERROR("Target %s not set up\n", obd_uuid2str(&tgt_uuid));
123 if (data && (data->ocd_connect_flags & OBD_CONNECT_INDEX))
124 data->ocd_index = index;
127 * Divine LOV knows that OBDs under it are OSCs.
129 imp = tgt_obd->u.cli.cl_import;
132 tgt_obd->obd_no_recov = 0;
133 /* FIXME this is probably supposed to be
134 ptlrpc_set_import_active. Horrible naming. */
135 ptlrpc_activate_import(imp);
138 if (imp->imp_invalid) {
139 CERROR("not connecting OSC %s; administratively "
140 "disabled\n", obd_uuid2str(&tgt_uuid));
141 rc = obd_register_observer(tgt_obd, obd);
143 CERROR("Target %s register_observer error %d; "
144 "will not be able to reactivate\n",
145 obd_uuid2str(&tgt_uuid), rc);
150 rc = obd_connect(&conn, tgt_obd, &lov_osc_uuid, data);
152 CERROR("Target %s connect error %d\n",
153 obd_uuid2str(&tgt_uuid), rc);
156 lov->lov_tgts[index]->ltd_exp = class_conn2export(&conn);
157 if (!lov->lov_tgts[index]->ltd_exp) {
158 CERROR("Target %s: null export!\n", obd_uuid2str(&tgt_uuid));
162 rc = obd_register_observer(tgt_obd, obd);
164 CERROR("Target %s register_observer error %d\n",
165 obd_uuid2str(&tgt_uuid), rc);
166 obd_disconnect(lov->lov_tgts[index]->ltd_exp);
167 lov->lov_tgts[index]->ltd_exp = NULL;
171 lov->lov_tgts[index]->ltd_reap = 0;
173 lov->lov_tgts[index]->ltd_active = 1;
174 lov->desc.ld_active_tgt_count++;
176 CDEBUG(D_CONFIG, "Connected tgt idx %d %s (%s) %sactive\n", index,
177 obd_uuid2str(&tgt_uuid), tgt_obd->obd_name, activate ? "":"in");
180 lov_proc_dir = lprocfs_srch(obd->obd_proc_entry, "target_obds");
182 struct obd_device *osc_obd = class_conn2obd(&conn);
183 cfs_proc_dir_entry_t *osc_symlink;
184 char name[MAX_STRING_SIZE];
186 LASSERT(osc_obd != NULL);
187 LASSERT(osc_obd->obd_magic == OBD_DEVICE_MAGIC);
188 LASSERT(osc_obd->obd_type->typ_name != NULL);
189 snprintf(name, MAX_STRING_SIZE, "../../../%s/%s",
190 osc_obd->obd_type->typ_name,
192 osc_symlink = proc_symlink(osc_obd->obd_name, lov_proc_dir,
194 if (osc_symlink == NULL) {
195 CERROR("could not register LOV target "
196 "/proc/fs/lustre/%s/%s/target_obds/%s.",
197 obd->obd_type->typ_name, obd->obd_name,
199 lprocfs_remove(&lov_proc_dir);
204 rc = qos_add_tgt(obd, index);
206 CERROR("qos_add_tgt failed %d\n", rc);
211 static int lov_connect(struct lustre_handle *conn, struct obd_device *obd,
212 struct obd_uuid *cluuid, struct obd_connect_data *data)
214 struct lov_obd *lov = &obd->u.lov;
215 struct lov_tgt_desc *tgt;
219 CDEBUG(D_CONFIG, "connect #%d\n", lov->lov_connects);
221 rc = class_connect(conn, obd, cluuid);
225 /* Why should there ever be more than 1 connect? */
227 LASSERT(lov->lov_connects == 1);
229 memset(&lov->lov_ocd, 0, sizeof(lov->lov_ocd));
231 lov->lov_ocd = *data;
234 for (i = 0; i < lov->desc.ld_tgt_count; i++) {
235 tgt = lov->lov_tgts[i];
236 if (!tgt || obd_uuid_empty(&tgt->ltd_uuid))
238 /* Flags will be lowest common denominator */
239 rc = lov_connect_obd(obd, i, lov->lov_tgts[i]->ltd_activate,
242 CERROR("%s: lov connect tgt %d failed: %d\n",
243 obd->obd_name, i, rc);
252 static int lov_disconnect_obd(struct obd_device *obd, __u32 index)
254 cfs_proc_dir_entry_t *lov_proc_dir;
255 struct lov_obd *lov = &obd->u.lov;
256 struct obd_device *osc_obd =
257 class_exp2obd(lov->lov_tgts[index]->ltd_exp);
261 CDEBUG(D_CONFIG, "%s: disconnecting target %s\n",
262 obd->obd_name, osc_obd->obd_name);
264 if (lov->lov_tgts[index]->ltd_active) {
265 lov->lov_tgts[index]->ltd_active = 0;
266 lov->desc.ld_active_tgt_count--;
269 lov_proc_dir = lprocfs_srch(obd->obd_proc_entry, "target_obds");
271 cfs_proc_dir_entry_t *osc_symlink;
273 osc_symlink = lprocfs_srch(lov_proc_dir, osc_obd->obd_name);
275 lprocfs_remove(&osc_symlink);
277 CERROR("/proc/fs/lustre/%s/%s/target_obds/%s missing.",
278 obd->obd_type->typ_name, obd->obd_name,
283 if (obd->obd_no_recov) {
284 /* Pass it on to our clients.
285 * XXX This should be an argument to disconnect,
286 * XXX not a back-door flag on the OBD. Ah well.
289 osc_obd->obd_no_recov = 1;
292 obd_register_observer(osc_obd, NULL);
294 rc = obd_disconnect(lov->lov_tgts[index]->ltd_exp);
296 CERROR("Target %s disconnect error %d\n",
297 lov_uuid2str(lov, index), rc);
301 qos_del_tgt(obd, index);
303 lov->lov_tgts[index]->ltd_exp = NULL;
307 static int lov_del_target(struct obd_device *obd, __u32 index,
308 struct obd_uuid *uuidp, int gen);
310 static int lov_disconnect(struct obd_export *exp)
312 struct obd_device *obd = class_exp2obd(exp);
313 struct lov_obd *lov = &obd->u.lov;
320 /* Only disconnect the underlying layers on the final disconnect. */
322 if (lov->lov_connects != 0) {
323 /* why should there be more than 1 connect? */
324 CERROR("disconnect #%d\n", lov->lov_connects);
328 /* Let's hold another reference so lov_del_obd doesn't spin through
331 for (i = 0; i < lov->desc.ld_tgt_count; i++) {
332 if (lov->lov_tgts[i] && lov->lov_tgts[i]->ltd_exp) {
333 /* Disconnection is the last we know about an obd */
334 lov_del_target(obd, i, 0, lov->lov_tgts[i]->ltd_gen);
340 rc = class_disconnect(exp); /* bz 9811 */
346 * -EINVAL : UUID can't be found in the LOV's target list
347 * -ENOTCONN: The UUID is found, but the target connection is bad (!)
348 * -EBADF : The UUID is found, but the OBD is the wrong type (!)
350 static int lov_set_osc_active(struct obd_device *obd, struct obd_uuid *uuid,
353 struct lov_obd *lov = &obd->u.lov;
354 struct lov_tgt_desc *tgt;
358 CDEBUG(D_INFO, "Searching in lov %p for uuid %s (activate=%d)\n",
359 lov, uuid->uuid, activate);
362 for (i = 0; i < lov->desc.ld_tgt_count; i++) {
363 tgt = lov->lov_tgts[i];
364 if (!tgt || !tgt->ltd_exp)
367 CDEBUG(D_INFO, "lov idx %d is %s conn "LPX64"\n",
368 i, obd_uuid2str(&tgt->ltd_uuid),
369 tgt->ltd_exp->exp_handle.h_cookie);
370 if (obd_uuid_equals(uuid, &tgt->ltd_uuid))
374 if (i == lov->desc.ld_tgt_count)
375 GOTO(out, rc = -EINVAL);
377 if (lov->lov_tgts[i]->ltd_active == activate) {
378 CDEBUG(D_INFO, "OSC %s already %sactive!\n", uuid->uuid,
379 activate ? "" : "in");
383 CDEBUG(D_CONFIG, "Marking OSC %s %sactive\n", obd_uuid2str(uuid),
384 activate ? "" : "in");
386 lov->lov_tgts[i]->ltd_active = activate;
388 lov->desc.ld_active_tgt_count++;
390 lov->desc.ld_active_tgt_count--;
391 /* remove any old qos penalty */
392 lov->lov_tgts[i]->ltd_qos.ltq_penalty = 0;
399 static int lov_notify(struct obd_device *obd, struct obd_device *watched,
400 enum obd_notify_event ev, void *data)
405 if (ev == OBD_NOTIFY_ACTIVE || ev == OBD_NOTIFY_INACTIVE) {
406 struct obd_uuid *uuid;
410 if (strcmp(watched->obd_type->typ_name, LUSTRE_OSC_NAME)) {
411 CERROR("unexpected notification of %s %s!\n",
412 watched->obd_type->typ_name,
416 uuid = &watched->u.cli.cl_target_uuid;
418 /* Set OSC as active before notifying the observer, so the
419 * observer can use the OSC normally.
421 rc = lov_set_osc_active(obd, uuid, ev == OBD_NOTIFY_ACTIVE);
423 CERROR("%sactivation of %s failed: %d\n",
424 (ev == OBD_NOTIFY_ACTIVE) ? "" : "de",
425 obd_uuid2str(uuid), rc);
430 /* Pass the notification up the chain. */
432 rc = obd_notify_observer(obd, watched, ev, data);
434 /* NULL watched means all osc's in the lov (only for syncs) */
435 struct lov_obd *lov = &obd->u.lov;
436 struct obd_device *tgt_obd;
439 for (i = 0; i < lov->desc.ld_tgt_count; i++) {
440 if (!lov->lov_tgts[i])
442 tgt_obd = class_exp2obd(lov->lov_tgts[i]->ltd_exp);
443 rc = obd_notify_observer(obd, tgt_obd, ev, data);
445 CERROR("%s: notify %s of %s failed %d\n",
447 obd->obd_observer->obd_name,
448 tgt_obd->obd_name, rc);
458 static int lov_add_target(struct obd_device *obd, struct obd_uuid *uuidp,
459 __u32 index, int gen, int active)
461 struct lov_obd *lov = &obd->u.lov;
462 struct lov_tgt_desc *tgt;
466 CDEBUG(D_CONFIG, "uuid:%s idx:%d gen:%d active:%d\n",
467 uuidp->uuid, index, gen, active);
470 CERROR("request to add OBD %s with invalid generation: %d\n",
475 mutex_down(&lov->lov_lock);
477 if ((index < lov->lov_tgt_size) && (lov->lov_tgts[index] != NULL)) {
478 tgt = lov->lov_tgts[index];
479 CERROR("UUID %s already assigned at LOV target index %d\n",
480 obd_uuid2str(&tgt->ltd_uuid), index);
481 mutex_up(&lov->lov_lock);
485 if (index >= lov->lov_tgt_size) {
486 /* We need to reallocate the lov target array. */
487 struct lov_tgt_desc **newtgts, **old = NULL;
488 __u32 newsize, oldsize = 0;
490 newsize = max(lov->lov_tgt_size, (__u32)2);
491 while (newsize < index + 1)
492 newsize = newsize << 1;
493 OBD_ALLOC(newtgts, sizeof(*newtgts) * newsize);
494 if (newtgts == NULL) {
495 mutex_up(&lov->lov_lock);
499 if (lov->lov_tgt_size) {
500 memcpy(newtgts, lov->lov_tgts, sizeof(*newtgts) *
503 oldsize = lov->lov_tgt_size;
506 lov->lov_tgts = newtgts;
507 lov->lov_tgt_size = newsize;
512 OBD_FREE(old, sizeof(*old) * oldsize);
514 CDEBUG(D_CONFIG, "tgts: %p size: %d\n",
515 lov->lov_tgts, lov->lov_tgt_size);
521 mutex_up(&lov->lov_lock);
525 memset(tgt, 0, sizeof(*tgt));
526 tgt->ltd_uuid = *uuidp;
527 /* XXX - add a sanity check on the generation number. */
529 tgt->ltd_index = index;
530 tgt->ltd_activate = active;
531 lov->lov_tgts[index] = tgt;
532 if (index >= lov->desc.ld_tgt_count)
533 lov->desc.ld_tgt_count = index + 1;
534 mutex_up(&lov->lov_lock);
536 CDEBUG(D_CONFIG, "idx=%d ltd_gen=%d ld_tgt_count=%d\n",
537 index, tgt->ltd_gen, lov->desc.ld_tgt_count);
539 if (lov->lov_connects == 0) {
540 /* lov_connect hasn't been called yet. We'll do the
541 lov_connect_obd on this target when that fn first runs,
542 because we don't know the connect flags yet. */
548 rc = lov_connect_obd(obd, index, active, &lov->lov_ocd);
552 rc = lov_notify(obd, tgt->ltd_exp->exp_obd,
553 active ? OBD_NOTIFY_ACTIVE : OBD_NOTIFY_INACTIVE,
558 CERROR("add failed (%d), deleting %s\n", rc,
559 obd_uuid2str(&tgt->ltd_uuid));
560 lov_del_target(obd, index, 0, 0);
566 /* Schedule a target for deletion */
567 static int lov_del_target(struct obd_device *obd, __u32 index,
568 struct obd_uuid *uuidp, int gen)
570 struct lov_obd *lov = &obd->u.lov;
571 int count = lov->desc.ld_tgt_count;
575 if (index >= count) {
576 CERROR("LOV target index %d >= number of LOV OBDs %d.\n",
583 if (!lov->lov_tgts[index]) {
584 CERROR("LOV target at index %d is not setup.\n", index);
585 GOTO(out, rc = -EINVAL);
588 if (uuidp && !obd_uuid_equals(uuidp, &lov->lov_tgts[index]->ltd_uuid)) {
589 CERROR("LOV target UUID %s at index %d doesn't match %s.\n",
590 lov_uuid2str(lov, index), index,
591 obd_uuid2str(uuidp));
592 GOTO(out, rc = -EINVAL);
595 CDEBUG(D_CONFIG, "uuid: %s idx: %d gen: %d exp: %p active: %d\n",
596 lov_uuid2str(lov, index), index,
597 lov->lov_tgts[index]->ltd_gen, lov->lov_tgts[index]->ltd_exp,
598 lov->lov_tgts[index]->ltd_active);
600 lov->lov_tgts[index]->ltd_reap = 1;
601 lov->lov_death_row++;
602 /* we really delete it from lov_putref */
609 /* We are holding lov_lock */
610 static void __lov_del_obd(struct obd_device *obd, __u32 index)
612 struct lov_obd *lov = &obd->u.lov;
613 struct obd_device *osc_obd;
614 struct lov_tgt_desc *tgt = lov->lov_tgts[index];
617 LASSERT(tgt->ltd_reap);
619 osc_obd = class_exp2obd(tgt->ltd_exp);
621 CDEBUG(D_CONFIG, "Removing tgt %s : %s\n",
622 lov_uuid2str(lov, index),
623 osc_obd ? osc_obd->obd_name : "<no obd>");
626 lov_disconnect_obd(obd, index);
628 /* XXX - right now there is a dependency on ld_tgt_count being the
629 * maximum tgt index for computing the mds_max_easize. So we can't
632 lov->lov_tgts[index] = NULL;
635 /* Manual cleanup - no cleanup logs to clean up the osc's. We must
636 do it ourselves. And we can't do it from lov_cleanup,
637 because we just lost our only reference to it. */
639 /* Use lov's force/fail flags. */
640 osc_obd->obd_force = obd->obd_force;
641 osc_obd->obd_fail = obd->obd_fail;
642 class_manual_cleanup(osc_obd);
646 void lov_fix_desc(struct lov_desc *desc)
648 if (desc->ld_default_stripe_size < PTLRPC_MAX_BRW_SIZE) {
649 LCONSOLE_WARN("Increasing default stripe size to min %u\n",
650 PTLRPC_MAX_BRW_SIZE);
651 desc->ld_default_stripe_size = PTLRPC_MAX_BRW_SIZE;
652 } else if (desc->ld_default_stripe_size & (LOV_MIN_STRIPE_SIZE - 1)) {
653 desc->ld_default_stripe_size &= ~(LOV_MIN_STRIPE_SIZE - 1);
654 LCONSOLE_WARN("Changing default stripe size to "LPU64" (a "
656 desc->ld_default_stripe_size,LOV_MIN_STRIPE_SIZE);
659 if (desc->ld_default_stripe_count == 0)
660 desc->ld_default_stripe_count = 1;
662 /* from lov_setstripe */
663 if ((desc->ld_pattern != 0) &&
664 (desc->ld_pattern != LOV_PATTERN_RAID0)) {
665 LCONSOLE_WARN("Unknown stripe pattern: %#x\n",desc->ld_pattern);
666 desc->ld_pattern = 0;
669 if (desc->ld_qos_maxage == 0)
670 desc->ld_qos_maxage = QOS_DEFAULT_MAXAGE;
673 static int lov_setup(struct obd_device *obd, obd_count len, void *buf)
675 struct lprocfs_static_vars lvars;
676 struct lustre_cfg *lcfg = buf;
677 struct lov_desc *desc;
678 struct lov_obd *lov = &obd->u.lov;
682 if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1) {
683 CERROR("LOV setup requires a descriptor\n");
687 desc = (struct lov_desc *)lustre_cfg_buf(lcfg, 1);
689 if (sizeof(*desc) > LUSTRE_CFG_BUFLEN(lcfg, 1)) {
690 CERROR("descriptor size wrong: %d > %d\n",
691 (int)sizeof(*desc), LUSTRE_CFG_BUFLEN(lcfg, 1));
695 if (desc->ld_magic != LOV_DESC_MAGIC) {
696 if (desc->ld_magic == __swab32(LOV_DESC_MAGIC)) {
697 CDEBUG(D_OTHER, "%s: Swabbing lov desc %p\n",
698 obd->obd_name, desc);
699 lustre_swab_lov_desc(desc);
701 CERROR("%s: Bad lov desc magic: %#x\n",
702 obd->obd_name, desc->ld_magic);
709 /* Because of 64-bit divide/mod operations only work with a 32-bit
710 * divisor in a 32-bit kernel, we cannot support a stripe width
711 * of 4GB or larger on 32-bit CPUs. */
712 count = desc->ld_default_stripe_count;
713 if ((count > 0 ? count : desc->ld_tgt_count) *
714 desc->ld_default_stripe_size > 0xffffffff) {
715 CERROR("LOV: stripe width "LPU64"x%u > 4294967295 bytes\n",
716 desc->ld_default_stripe_size, count);
720 desc->ld_active_tgt_count = 0;
722 lov->lov_tgt_size = 0;
723 sema_init(&lov->lov_lock, 1);
724 atomic_set(&lov->lov_refcount, 0);
725 INIT_LIST_HEAD(&lov->lov_qos.lq_oss_list);
726 init_rwsem(&lov->lov_qos.lq_rw_sem);
727 lov->lov_qos.lq_dirty = 1;
728 lov->lov_qos.lq_dirty_rr = 1;
729 lov->lov_qos.lq_reset = 1;
730 /* Default priority is toward free space balance */
731 lov->lov_qos.lq_prio_free = 232;
733 lprocfs_init_vars(lov, &lvars);
734 lprocfs_obd_setup(obd, lvars.obd_vars);
737 cfs_proc_dir_entry_t *entry;
739 entry = create_proc_entry("target_obd", 0444,
740 obd->obd_proc_entry);
742 entry->proc_fops = &lov_proc_target_fops;
751 static int lov_precleanup(struct obd_device *obd, enum obd_cleanup_stage stage)
757 case OBD_CLEANUP_EARLY: {
758 struct lov_obd *lov = &obd->u.lov;
760 for (i = 0; i < lov->desc.ld_tgt_count; i++) {
761 if (!lov->lov_tgts[i] || !lov->lov_tgts[i]->ltd_active)
763 obd_precleanup(class_exp2obd(lov->lov_tgts[i]->ltd_exp),
768 case OBD_CLEANUP_EXPORTS:
770 case OBD_CLEANUP_SELF_EXP:
771 rc = obd_llog_finish(obd, 0);
773 CERROR("failed to cleanup llogging subsystems\n");
775 case OBD_CLEANUP_OBD:
781 static int lov_cleanup(struct obd_device *obd)
783 struct lov_obd *lov = &obd->u.lov;
785 lprocfs_obd_cleanup(obd);
788 for (i = 0; i < lov->desc.ld_tgt_count; i++) {
789 if (lov->lov_tgts[i]) {
790 /* Inactive targets may never have connected */
791 if (lov->lov_tgts[i]->ltd_active ||
792 atomic_read(&lov->lov_refcount))
793 /* We should never get here - these
794 should have been removed in the
796 CERROR("lov tgt %d not cleaned!"
797 " deathrow=%d, lovrc=%d\n",
798 i, lov->lov_death_row,
799 atomic_read(&lov->lov_refcount));
800 lov_del_target(obd, i, 0, 0);
803 OBD_FREE(lov->lov_tgts, sizeof(*lov->lov_tgts) *
805 lov->lov_tgt_size = 0;
808 if (lov->lov_qos.lq_rr_size)
809 OBD_FREE(lov->lov_qos.lq_rr_array, lov->lov_qos.lq_rr_size);
814 static int lov_process_config(struct obd_device *obd, obd_count len, void *buf)
816 struct lustre_cfg *lcfg = buf;
817 struct obd_uuid obd_uuid;
822 switch(cmd = lcfg->lcfg_command) {
823 case LCFG_LOV_ADD_OBD:
824 case LCFG_LOV_ADD_INA:
825 case LCFG_LOV_DEL_OBD: {
828 /* lov_modify_tgts add 0:lov_mdsA 1:ost1_UUID 2:0 3:1 */
829 if (LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(obd_uuid.uuid))
830 GOTO(out, rc = -EINVAL);
832 obd_str2uuid(&obd_uuid, lustre_cfg_buf(lcfg, 1));
834 if (sscanf(lustre_cfg_buf(lcfg, 2), "%d", &index) != 1)
835 GOTO(out, rc = -EINVAL);
836 if (sscanf(lustre_cfg_buf(lcfg, 3), "%d", &gen) != 1)
837 GOTO(out, rc = -EINVAL);
838 if (cmd == LCFG_LOV_ADD_OBD)
839 rc = lov_add_target(obd, &obd_uuid, index, gen, 1);
840 else if (cmd == LCFG_LOV_ADD_INA)
841 rc = lov_add_target(obd, &obd_uuid, index, gen, 0);
843 rc = lov_del_target(obd, index, &obd_uuid, gen);
847 struct lprocfs_static_vars lvars;
848 struct lov_desc *desc = &(obd->u.lov.desc);
851 GOTO(out, rc = -EINVAL);
853 lprocfs_init_vars(lov, &lvars);
855 rc = class_process_proc_param(PARAM_LOV, lvars.obd_vars,
860 CERROR("Unknown command: %d\n", lcfg->lcfg_command);
861 GOTO(out, rc = -EINVAL);
870 #define log2(n) ffz(~(n))
873 static int lov_clear_orphans(struct obd_export *export, struct obdo *src_oa,
874 struct lov_stripe_md **ea,
875 struct obd_trans_info *oti)
879 struct obd_uuid *ost_uuid = NULL;
883 LASSERT(src_oa->o_valid & OBD_MD_FLFLAGS &&
884 src_oa->o_flags == OBD_FL_DELORPHAN);
886 lov = &export->exp_obd->u.lov;
888 tmp_oa = obdo_alloc();
892 if (src_oa->o_valid & OBD_MD_FLINLINE) {
893 ost_uuid = (struct obd_uuid *)src_oa->o_inline;
894 CDEBUG(D_HA, "clearing orphans only for %s\n",
898 lov_getref(export->exp_obd);
899 for (i = 0; i < lov->desc.ld_tgt_count; i++) {
900 struct lov_stripe_md obj_md;
901 struct lov_stripe_md *obj_mdp = &obj_md;
902 struct lov_tgt_desc *tgt;
905 tgt = lov->lov_tgts[i];
909 /* if called for a specific target, we don't
910 care if it is not active. */
911 if (!lov->lov_tgts[i]->ltd_active == 0 && ost_uuid == NULL) {
912 CDEBUG(D_HA, "lov idx %d inactive\n", i);
916 if (ost_uuid && !obd_uuid_equals(ost_uuid, &tgt->ltd_uuid))
919 CDEBUG(D_CONFIG,"Clear orphans for %d:%s\n", i,
920 obd_uuid2str(ost_uuid));
922 memcpy(tmp_oa, src_oa, sizeof(*tmp_oa));
924 LASSERT(lov->lov_tgts[i]->ltd_exp);
925 /* XXX: LOV STACKING: use real "obj_mdp" sub-data */
926 err = obd_create(lov->lov_tgts[i]->ltd_exp,
927 tmp_oa, &obj_mdp, oti);
929 /* This export will be disabled until it is recovered,
930 and then orphan recovery will be completed. */
931 CERROR("error in orphan recovery on OST idx %d/%d: "
932 "rc = %d\n", i, lov->desc.ld_tgt_count, err);
937 lov_putref(export->exp_obd);
943 static int lov_recreate(struct obd_export *exp, struct obdo *src_oa,
944 struct lov_stripe_md **ea, struct obd_trans_info *oti)
946 struct lov_stripe_md *obj_mdp, *lsm;
947 struct lov_obd *lov = &exp->exp_obd->u.lov;
952 LASSERT(src_oa->o_valid & OBD_MD_FLFLAGS &&
953 src_oa->o_flags & OBD_FL_RECREATE_OBJS);
955 OBD_ALLOC(obj_mdp, sizeof(*obj_mdp));
959 ost_idx = src_oa->o_nlink;
962 GOTO(out, rc = -EINVAL);
963 if (ost_idx >= lov->desc.ld_tgt_count ||
964 !lov->lov_tgts[ost_idx])
965 GOTO(out, rc = -EINVAL);
967 for (i = 0; i < lsm->lsm_stripe_count; i++) {
968 if (lsm->lsm_oinfo[i]->loi_ost_idx == ost_idx) {
969 if (lsm->lsm_oinfo[i]->loi_id != src_oa->o_id)
970 GOTO(out, rc = -EINVAL);
974 if (i == lsm->lsm_stripe_count)
975 GOTO(out, rc = -EINVAL);
977 rc = obd_create(lov->lov_tgts[ost_idx]->ltd_exp, src_oa, &obj_mdp, oti);
979 OBD_FREE(obj_mdp, sizeof(*obj_mdp));
983 /* the LOV expects oa->o_id to be set to the LOV object id */
984 static int lov_create(struct obd_export *exp, struct obdo *src_oa,
985 struct lov_stripe_md **ea, struct obd_trans_info *oti)
988 struct obd_info oinfo;
989 struct lov_request_set *set = NULL;
990 struct lov_request *req;
991 struct obd_statfs osfs;
1000 if ((src_oa->o_valid & OBD_MD_FLFLAGS) &&
1001 src_oa->o_flags == OBD_FL_DELORPHAN) {
1002 rc = lov_clear_orphans(exp, src_oa, ea, oti);
1006 lov = &exp->exp_obd->u.lov;
1007 if (!lov->desc.ld_active_tgt_count)
1010 /* Recreate a specific object id at the given OST index */
1011 if ((src_oa->o_valid & OBD_MD_FLFLAGS) &&
1012 (src_oa->o_flags & OBD_FL_RECREATE_OBJS)) {
1013 rc = lov_recreate(exp, src_oa, ea, oti);
1017 maxage = cfs_time_shift_64(-lov->desc.ld_qos_maxage);
1018 obd_statfs_rqset(exp->exp_obd, &osfs, maxage);
1020 rc = lov_prep_create_set(exp, &oinfo, ea, src_oa, oti, &set);
1024 list_for_each_entry(req, &set->set_list, rq_link) {
1025 /* XXX: LOV STACKING: use real "obj_mdp" sub-data */
1026 rc = obd_create(lov->lov_tgts[req->rq_idx]->ltd_exp,
1027 req->rq_oi.oi_oa, &req->rq_oi.oi_md, oti);
1028 lov_update_create_set(set, req, rc);
1030 rc = lov_fini_create_set(set, ea);
1034 #define ASSERT_LSM_MAGIC(lsmp) \
1036 LASSERT((lsmp) != NULL); \
1037 LASSERTF(((lsmp)->lsm_magic == LOV_MAGIC || \
1038 (lsmp)->lsm_magic == LOV_MAGIC_JOIN), "%p->lsm_magic=%x\n", \
1039 (lsmp), (lsmp)->lsm_magic); \
1042 static int lov_destroy(struct obd_export *exp, struct obdo *oa,
1043 struct lov_stripe_md *lsm, struct obd_trans_info *oti,
1044 struct obd_export *md_exp)
1046 struct lov_request_set *set;
1047 struct obd_info oinfo;
1048 struct lov_request *req;
1049 struct list_head *pos;
1050 struct lov_obd *lov;
1054 ASSERT_LSM_MAGIC(lsm);
1056 if (!exp || !exp->exp_obd)
1059 if (oa->o_valid & OBD_MD_FLCOOKIE) {
1061 LASSERT(oti->oti_logcookies);
1064 lov = &exp->exp_obd->u.lov;
1065 rc = lov_prep_destroy_set(exp, &oinfo, oa, lsm, oti, &set);
1069 list_for_each (pos, &set->set_list) {
1071 req = list_entry(pos, struct lov_request, rq_link);
1073 if (oa->o_valid & OBD_MD_FLCOOKIE)
1074 oti->oti_logcookies = set->set_cookies + req->rq_stripe;
1076 err = obd_destroy(lov->lov_tgts[req->rq_idx]->ltd_exp,
1077 req->rq_oi.oi_oa, NULL, oti, NULL);
1078 err = lov_update_common_set(set, req, err);
1080 CERROR("error: destroying objid "LPX64" subobj "
1081 LPX64" on OST idx %d: rc = %d\n",
1082 oa->o_id, req->rq_oi.oi_oa->o_id,
1090 LASSERT(lsm_op_find(lsm->lsm_magic) != NULL);
1091 rc = lsm_op_find(lsm->lsm_magic)->lsm_destroy(lsm, oa, md_exp);
1093 err = lov_fini_destroy_set(set);
1094 RETURN(rc ? rc : err);
1097 static int lov_getattr(struct obd_export *exp, struct obd_info *oinfo)
1099 struct lov_request_set *set;
1100 struct lov_request *req;
1101 struct list_head *pos;
1102 struct lov_obd *lov;
1103 int err = 0, rc = 0;
1107 ASSERT_LSM_MAGIC(oinfo->oi_md);
1109 if (!exp || !exp->exp_obd)
1112 lov = &exp->exp_obd->u.lov;
1114 rc = lov_prep_getattr_set(exp, oinfo, &set);
1118 list_for_each (pos, &set->set_list) {
1119 req = list_entry(pos, struct lov_request, rq_link);
1121 CDEBUG(D_INFO, "objid "LPX64"[%d] has subobj "LPX64" at idx "
1122 "%u\n", oinfo->oi_oa->o_id, req->rq_stripe,
1123 req->rq_oi.oi_oa->o_id, req->rq_idx);
1125 rc = obd_getattr(lov->lov_tgts[req->rq_idx]->ltd_exp,
1127 err = lov_update_common_set(set, req, rc);
1129 CERROR("error: getattr objid "LPX64" subobj "
1130 LPX64" on OST idx %d: rc = %d\n",
1131 oinfo->oi_oa->o_id, req->rq_oi.oi_oa->o_id,
1137 rc = lov_fini_getattr_set(set);
1143 static int lov_getattr_interpret(struct ptlrpc_request_set *rqset,
1146 struct lov_request_set *lovset = (struct lov_request_set *)data;
1150 /* don't do attribute merge if this aysnc op failed */
1152 lovset->set_completes = 0;
1153 err = lov_fini_getattr_set(lovset);
1154 RETURN(rc ? rc : err);
1157 static int lov_getattr_async(struct obd_export *exp, struct obd_info *oinfo,
1158 struct ptlrpc_request_set *rqset)
1160 struct lov_request_set *lovset;
1161 struct lov_obd *lov;
1162 struct list_head *pos;
1163 struct lov_request *req;
1168 ASSERT_LSM_MAGIC(oinfo->oi_md);
1170 if (!exp || !exp->exp_obd)
1173 lov = &exp->exp_obd->u.lov;
1175 rc = lov_prep_getattr_set(exp, oinfo, &lovset);
1179 CDEBUG(D_INFO, "objid "LPX64": %ux%u byte stripes\n",
1180 oinfo->oi_md->lsm_object_id, oinfo->oi_md->lsm_stripe_count,
1181 oinfo->oi_md->lsm_stripe_size);
1183 list_for_each (pos, &lovset->set_list) {
1184 req = list_entry(pos, struct lov_request, rq_link);
1186 CDEBUG(D_INFO, "objid "LPX64"[%d] has subobj "LPX64" at idx "
1187 "%u\n", oinfo->oi_oa->o_id, req->rq_stripe,
1188 req->rq_oi.oi_oa->o_id, req->rq_idx);
1189 rc = obd_getattr_async(lov->lov_tgts[req->rq_idx]->ltd_exp,
1190 &req->rq_oi, rqset);
1192 CERROR("error: getattr objid "LPX64" subobj "
1193 LPX64" on OST idx %d: rc = %d\n",
1194 oinfo->oi_oa->o_id, req->rq_oi.oi_oa->o_id,
1200 if (!list_empty(&rqset->set_requests)) {
1202 LASSERT (rqset->set_interpret == NULL);
1203 rqset->set_interpret = lov_getattr_interpret;
1204 rqset->set_arg = (void *)lovset;
1209 lovset->set_completes = 0;
1210 err = lov_fini_getattr_set(lovset);
1211 RETURN(rc ? rc : err);
1214 static int lov_setattr(struct obd_export *exp, struct obd_info *oinfo,
1215 struct obd_trans_info *oti)
1217 struct lov_request_set *set;
1218 struct lov_obd *lov;
1219 struct list_head *pos;
1220 struct lov_request *req;
1221 int err = 0, rc = 0;
1225 ASSERT_LSM_MAGIC(oinfo->oi_md);
1227 if (!exp || !exp->exp_obd)
1230 /* for now, we only expect the following updates here */
1231 LASSERT(!(oinfo->oi_oa->o_valid & ~(OBD_MD_FLID | OBD_MD_FLTYPE |
1232 OBD_MD_FLMODE | OBD_MD_FLATIME |
1233 OBD_MD_FLMTIME | OBD_MD_FLCTIME |
1234 OBD_MD_FLFLAGS | OBD_MD_FLSIZE |
1235 OBD_MD_FLGROUP | OBD_MD_FLUID |
1236 OBD_MD_FLGID | OBD_MD_FLINLINE |
1237 OBD_MD_FLFID | OBD_MD_FLGENER)));
1238 lov = &exp->exp_obd->u.lov;
1239 rc = lov_prep_setattr_set(exp, oinfo, oti, &set);
1243 list_for_each (pos, &set->set_list) {
1244 req = list_entry(pos, struct lov_request, rq_link);
1246 rc = obd_setattr(lov->lov_tgts[req->rq_idx]->ltd_exp,
1248 err = lov_update_setattr_set(set, req, rc);
1250 CERROR("error: setattr objid "LPX64" subobj "
1251 LPX64" on OST idx %d: rc = %d\n",
1252 set->set_oi->oi_oa->o_id,
1253 req->rq_oi.oi_oa->o_id, req->rq_idx, err);
1258 err = lov_fini_setattr_set(set);
1264 static int lov_setattr_interpret(struct ptlrpc_request_set *rqset,
1267 struct lov_request_set *lovset = (struct lov_request_set *)data;
1272 lovset->set_completes = 0;
1273 err = lov_fini_setattr_set(lovset);
1274 RETURN(rc ? rc : err);
1277 /* If @oti is given, the request goes from MDS and responses from OSTs are not
1278 needed. Otherwise, a client is waiting for responses. */
1279 static int lov_setattr_async(struct obd_export *exp, struct obd_info *oinfo,
1280 struct obd_trans_info *oti,
1281 struct ptlrpc_request_set *rqset)
1283 struct lov_request_set *set;
1284 struct lov_request *req;
1285 struct list_head *pos;
1286 struct lov_obd *lov;
1291 ASSERT_LSM_MAGIC(oinfo->oi_md);
1292 if (oinfo->oi_oa->o_valid & OBD_MD_FLCOOKIE) {
1294 LASSERT(oti->oti_logcookies);
1297 if (!exp || !exp->exp_obd)
1300 lov = &exp->exp_obd->u.lov;
1301 rc = lov_prep_setattr_set(exp, oinfo, oti, &set);
1305 CDEBUG(D_INFO, "objid "LPX64": %ux%u byte stripes\n",
1306 oinfo->oi_md->lsm_object_id, oinfo->oi_md->lsm_stripe_count,
1307 oinfo->oi_md->lsm_stripe_size);
1309 list_for_each (pos, &set->set_list) {
1310 req = list_entry(pos, struct lov_request, rq_link);
1312 if (oinfo->oi_oa->o_valid & OBD_MD_FLCOOKIE)
1313 oti->oti_logcookies = set->set_cookies + req->rq_stripe;
1315 CDEBUG(D_INFO, "objid "LPX64"[%d] has subobj "LPX64" at idx "
1316 "%u\n", oinfo->oi_oa->o_id, req->rq_stripe,
1317 req->rq_oi.oi_oa->o_id, req->rq_idx);
1319 rc = obd_setattr_async(lov->lov_tgts[req->rq_idx]->ltd_exp,
1320 &req->rq_oi, oti, rqset);
1322 CERROR("error: setattr objid "LPX64" subobj "
1323 LPX64" on OST idx %d: rc = %d\n",
1324 set->set_oi->oi_oa->o_id,
1325 req->rq_oi.oi_oa->o_id,
1331 /* If we are not waiting for responses on async requests, return. */
1332 if (rc || !rqset || list_empty(&rqset->set_requests)) {
1335 set->set_completes = 0;
1336 err = lov_fini_setattr_set(set);
1337 RETURN(rc ? rc : err);
1340 LASSERT(rqset->set_interpret == NULL);
1341 rqset->set_interpret = lov_setattr_interpret;
1342 rqset->set_arg = (void *)set;
1347 static int lov_punch_interpret(struct ptlrpc_request_set *rqset,
1350 struct lov_request_set *lovset = (struct lov_request_set *)data;
1355 lovset->set_completes = 0;
1356 err = lov_fini_punch_set(lovset);
1357 RETURN(rc ? rc : err);
1360 /* FIXME: maybe we'll just make one node the authoritative attribute node, then
1361 * we can send this 'punch' to just the authoritative node and the nodes
1362 * that the punch will affect. */
1363 static int lov_punch(struct obd_export *exp, struct obd_info *oinfo,
1364 struct obd_trans_info *oti,
1365 struct ptlrpc_request_set *rqset)
1367 struct lov_request_set *set;
1368 struct lov_obd *lov;
1369 struct list_head *pos;
1370 struct lov_request *req;
1375 ASSERT_LSM_MAGIC(oinfo->oi_md);
1377 if (!exp || !exp->exp_obd)
1380 lov = &exp->exp_obd->u.lov;
1381 rc = lov_prep_punch_set(exp, oinfo, oti, &set);
1385 list_for_each (pos, &set->set_list) {
1386 req = list_entry(pos, struct lov_request, rq_link);
1388 rc = obd_punch(lov->lov_tgts[req->rq_idx]->ltd_exp,
1389 &req->rq_oi, NULL, rqset);
1391 CERROR("error: punch objid "LPX64" subobj "LPX64
1392 " on OST idx %d: rc = %d\n",
1393 set->set_oi->oi_oa->o_id,
1394 req->rq_oi.oi_oa->o_id, req->rq_idx, rc);
1399 if (rc || list_empty(&rqset->set_requests)) {
1401 err = lov_fini_punch_set(set);
1402 RETURN(rc ? rc : err);
1405 LASSERT(rqset->set_interpret == NULL);
1406 rqset->set_interpret = lov_punch_interpret;
1407 rqset->set_arg = (void *)set;
1412 static int lov_sync(struct obd_export *exp, struct obdo *oa,
1413 struct lov_stripe_md *lsm, obd_off start, obd_off end)
1415 struct lov_request_set *set;
1416 struct obd_info oinfo;
1417 struct lov_obd *lov;
1418 struct list_head *pos;
1419 struct lov_request *req;
1420 int err = 0, rc = 0;
1423 ASSERT_LSM_MAGIC(lsm);
1428 lov = &exp->exp_obd->u.lov;
1429 rc = lov_prep_sync_set(exp, &oinfo, oa, lsm, start, end, &set);
1433 list_for_each (pos, &set->set_list) {
1434 req = list_entry(pos, struct lov_request, rq_link);
1436 rc = obd_sync(lov->lov_tgts[req->rq_idx]->ltd_exp,
1437 req->rq_oi.oi_oa, NULL,
1438 req->rq_oi.oi_policy.l_extent.start,
1439 req->rq_oi.oi_policy.l_extent.end);
1440 err = lov_update_common_set(set, req, rc);
1442 CERROR("error: fsync objid "LPX64" subobj "LPX64
1443 " on OST idx %d: rc = %d\n",
1444 set->set_oi->oi_oa->o_id,
1445 req->rq_oi.oi_oa->o_id, req->rq_idx, rc);
1450 err = lov_fini_sync_set(set);
1456 static int lov_brw_check(struct lov_obd *lov, struct obd_info *lov_oinfo,
1457 obd_count oa_bufs, struct brw_page *pga)
1459 struct obd_info oinfo = { { { 0 } } };
1462 oinfo.oi_oa = lov_oinfo->oi_oa;
1464 /* The caller just wants to know if there's a chance that this
1465 * I/O can succeed */
1466 for (i = 0; i < oa_bufs; i++) {
1467 int stripe = lov_stripe_number(lov_oinfo->oi_md, pga[i].off);
1468 int ost = lov_oinfo->oi_md->lsm_oinfo[stripe]->loi_ost_idx;
1471 if (!lov_stripe_intersects(lov_oinfo->oi_md, i, pga[i].off,
1472 pga[i].off + pga[i].count,
1476 if (!lov->lov_tgts[ost] || !lov->lov_tgts[ost]->ltd_active) {
1477 CDEBUG(D_HA, "lov idx %d inactive\n", ost);
1481 rc = obd_brw(OBD_BRW_CHECK, lov->lov_tgts[ost]->ltd_exp, &oinfo,
1489 static int lov_brw(int cmd, struct obd_export *exp, struct obd_info *oinfo,
1490 obd_count oa_bufs, struct brw_page *pga,
1491 struct obd_trans_info *oti)
1493 struct lov_request_set *set;
1494 struct lov_request *req;
1495 struct list_head *pos;
1496 struct lov_obd *lov = &exp->exp_obd->u.lov;
1500 ASSERT_LSM_MAGIC(oinfo->oi_md);
1502 if (cmd == OBD_BRW_CHECK) {
1503 rc = lov_brw_check(lov, oinfo, oa_bufs, pga);
1507 rc = lov_prep_brw_set(exp, oinfo, oa_bufs, pga, oti, &set);
1511 list_for_each (pos, &set->set_list) {
1512 struct obd_export *sub_exp;
1513 struct brw_page *sub_pga;
1514 req = list_entry(pos, struct lov_request, rq_link);
1516 sub_exp = lov->lov_tgts[req->rq_idx]->ltd_exp;
1517 sub_pga = set->set_pga + req->rq_pgaidx;
1518 rc = obd_brw(cmd, sub_exp, &req->rq_oi, req->rq_oabufs,
1522 lov_update_common_set(set, req, rc);
1525 err = lov_fini_brw_set(set);
1531 static int lov_brw_interpret(struct ptlrpc_request_set *reqset, void *data,
1534 struct lov_request_set *lovset = (struct lov_request_set *)data;
1538 lovset->set_completes = 0;
1539 lov_fini_brw_set(lovset);
1541 rc = lov_fini_brw_set(lovset);
1547 static int lov_brw_async(int cmd, struct obd_export *exp,
1548 struct obd_info *oinfo, obd_count oa_bufs,
1549 struct brw_page *pga, struct obd_trans_info *oti,
1550 struct ptlrpc_request_set *set)
1552 struct lov_request_set *lovset;
1553 struct lov_request *req;
1554 struct list_head *pos;
1555 struct lov_obd *lov = &exp->exp_obd->u.lov;
1560 ASSERT_LSM_MAGIC(oinfo->oi_md);
1562 if (cmd == OBD_BRW_CHECK) {
1563 rc = lov_brw_check(lov, oinfo, oa_bufs, pga);
1567 rc = lov_prep_brw_set(exp, oinfo, oa_bufs, pga, oti, &lovset);
1571 list_for_each (pos, &lovset->set_list) {
1572 struct obd_export *sub_exp;
1573 struct brw_page *sub_pga;
1574 req = list_entry(pos, struct lov_request, rq_link);
1576 sub_exp = lov->lov_tgts[req->rq_idx]->ltd_exp;
1577 sub_pga = lovset->set_pga + req->rq_pgaidx;
1578 rc = obd_brw_async(cmd, sub_exp, &req->rq_oi, req->rq_oabufs,
1582 lov_update_common_set(lovset, req, rc);
1585 LASSERT(set->set_interpret == NULL);
1586 set->set_interpret = (set_interpreter_func)lov_brw_interpret;
1587 set->set_arg = (void *)lovset;
1591 lov_fini_brw_set(lovset);
1595 static int lov_ap_make_ready(void *data, int cmd)
1597 struct lov_async_page *lap = LAP_FROM_COOKIE(data);
1599 return lap->lap_caller_ops->ap_make_ready(lap->lap_caller_data, cmd);
1602 static int lov_ap_refresh_count(void *data, int cmd)
1604 struct lov_async_page *lap = LAP_FROM_COOKIE(data);
1606 return lap->lap_caller_ops->ap_refresh_count(lap->lap_caller_data,
1610 static void lov_ap_fill_obdo(void *data, int cmd, struct obdo *oa)
1612 struct lov_async_page *lap = LAP_FROM_COOKIE(data);
1614 lap->lap_caller_ops->ap_fill_obdo(lap->lap_caller_data, cmd, oa);
1615 /* XXX woah, shouldn't we be altering more here? size? */
1616 oa->o_id = lap->lap_loi_id;
1617 oa->o_stripe_idx = lap->lap_stripe;
1620 static void lov_ap_update_obdo(void *data, int cmd, struct obdo *oa,
1623 struct lov_async_page *lap = LAP_FROM_COOKIE(data);
1625 lap->lap_caller_ops->ap_update_obdo(lap->lap_caller_data, cmd,oa,valid);
1628 static int lov_ap_completion(void *data, int cmd, struct obdo *oa, int rc)
1630 struct lov_async_page *lap = LAP_FROM_COOKIE(data);
1632 /* in a raid1 regime this would down a count of many ios
1633 * in flight, onl calling the caller_ops completion when all
1634 * the raid1 ios are complete */
1635 rc = lap->lap_caller_ops->ap_completion(lap->lap_caller_data,cmd,oa,rc);
1639 static struct obd_async_page_ops lov_async_page_ops = {
1640 .ap_make_ready = lov_ap_make_ready,
1641 .ap_refresh_count = lov_ap_refresh_count,
1642 .ap_fill_obdo = lov_ap_fill_obdo,
1643 .ap_update_obdo = lov_ap_update_obdo,
1644 .ap_completion = lov_ap_completion,
1647 int lov_prep_async_page(struct obd_export *exp, struct lov_stripe_md *lsm,
1648 struct lov_oinfo *loi, cfs_page_t *page,
1649 obd_off offset, struct obd_async_page_ops *ops,
1650 void *data, void **res)
1652 struct lov_obd *lov = &exp->exp_obd->u.lov;
1653 struct lov_async_page *lap;
1659 /* Find an existing osc so we can get it's stupid sizeof(*oap).
1660 Only because of this layering limitation will a client
1661 mount with no osts fail */
1662 while (!lov->lov_tgts || !lov->lov_tgts[i] ||
1663 !lov->lov_tgts[i]->ltd_exp) {
1665 if (i >= lov->desc.ld_tgt_count)
1668 rc = size_round(sizeof(*lap)) +
1669 obd_prep_async_page(lov->lov_tgts[i]->ltd_exp, NULL,
1670 NULL, NULL, 0, NULL, NULL, NULL);
1673 ASSERT_LSM_MAGIC(lsm);
1674 LASSERT(loi == NULL);
1677 lap->lap_magic = LOV_AP_MAGIC;
1678 lap->lap_caller_ops = ops;
1679 lap->lap_caller_data = data;
1681 /* for now only raid 0 which passes through */
1682 lap->lap_stripe = lov_stripe_number(lsm, offset);
1683 lov_stripe_offset(lsm, offset, lap->lap_stripe, &lap->lap_sub_offset);
1684 loi = lsm->lsm_oinfo[lap->lap_stripe];
1686 /* so the callback doesn't need the lsm */
1687 lap->lap_loi_id = loi->loi_id;
1689 lap->lap_sub_cookie = (void *)lap + size_round(sizeof(*lap));
1691 rc = obd_prep_async_page(lov->lov_tgts[loi->loi_ost_idx]->ltd_exp,
1692 lsm, loi, page, lap->lap_sub_offset,
1693 &lov_async_page_ops, lap,
1694 &lap->lap_sub_cookie);
1697 CDEBUG(D_CACHE, "lap %p page %p cookie %p off "LPU64"\n", lap, page,
1698 lap->lap_sub_cookie, offset);
1702 static int lov_queue_async_io(struct obd_export *exp,
1703 struct lov_stripe_md *lsm,
1704 struct lov_oinfo *loi, void *cookie,
1705 int cmd, obd_off off, int count,
1706 obd_flag brw_flags, obd_flag async_flags)
1708 struct lov_obd *lov = &exp->exp_obd->u.lov;
1709 struct lov_async_page *lap;
1712 LASSERT(loi == NULL);
1714 ASSERT_LSM_MAGIC(lsm);
1716 lap = LAP_FROM_COOKIE(cookie);
1718 loi = lsm->lsm_oinfo[lap->lap_stripe];
1720 rc = obd_queue_async_io(lov->lov_tgts[loi->loi_ost_idx]->ltd_exp, lsm,
1721 loi, lap->lap_sub_cookie, cmd, off, count,
1722 brw_flags, async_flags);
1726 static int lov_set_async_flags(struct obd_export *exp,
1727 struct lov_stripe_md *lsm,
1728 struct lov_oinfo *loi, void *cookie,
1729 obd_flag async_flags)
1731 struct lov_obd *lov = &exp->exp_obd->u.lov;
1732 struct lov_async_page *lap;
1735 LASSERT(loi == NULL);
1737 ASSERT_LSM_MAGIC(lsm);
1739 lap = LAP_FROM_COOKIE(cookie);
1741 loi = lsm->lsm_oinfo[lap->lap_stripe];
1743 rc = obd_set_async_flags(lov->lov_tgts[loi->loi_ost_idx]->ltd_exp,
1744 lsm, loi, lap->lap_sub_cookie, async_flags);
1748 static int lov_queue_group_io(struct obd_export *exp,
1749 struct lov_stripe_md *lsm,
1750 struct lov_oinfo *loi,
1751 struct obd_io_group *oig, void *cookie,
1752 int cmd, obd_off off, int count,
1753 obd_flag brw_flags, obd_flag async_flags)
1755 struct lov_obd *lov = &exp->exp_obd->u.lov;
1756 struct lov_async_page *lap;
1759 LASSERT(loi == NULL);
1761 ASSERT_LSM_MAGIC(lsm);
1763 lap = LAP_FROM_COOKIE(cookie);
1765 loi = lsm->lsm_oinfo[lap->lap_stripe];
1767 rc = obd_queue_group_io(lov->lov_tgts[loi->loi_ost_idx]->ltd_exp, lsm,
1768 loi, oig, lap->lap_sub_cookie, cmd, off, count,
1769 brw_flags, async_flags);
1773 /* this isn't exactly optimal. we may have queued sync io in oscs on
1774 * all stripes, but we don't record that fact at queue time. so we
1775 * trigger sync io on all stripes. */
1776 static int lov_trigger_group_io(struct obd_export *exp,
1777 struct lov_stripe_md *lsm,
1778 struct lov_oinfo *loi,
1779 struct obd_io_group *oig)
1781 struct lov_obd *lov = &exp->exp_obd->u.lov;
1784 LASSERT(loi == NULL);
1786 ASSERT_LSM_MAGIC(lsm);
1788 for (i = 0; i < lsm->lsm_stripe_count; i++) {
1789 loi = lsm->lsm_oinfo[i];
1790 if (!lov->lov_tgts[loi->loi_ost_idx] ||
1791 !lov->lov_tgts[loi->loi_ost_idx]->ltd_active) {
1792 CDEBUG(D_HA, "lov idx %d inactive\n", loi->loi_ost_idx);
1796 err = obd_trigger_group_io(lov->lov_tgts[loi->loi_ost_idx]->ltd_exp,
1798 if (rc == 0 && err != 0)
1804 static int lov_teardown_async_page(struct obd_export *exp,
1805 struct lov_stripe_md *lsm,
1806 struct lov_oinfo *loi, void *cookie)
1808 struct lov_obd *lov = &exp->exp_obd->u.lov;
1809 struct lov_async_page *lap;
1812 LASSERT(loi == NULL);
1814 ASSERT_LSM_MAGIC(lsm);
1816 lap = LAP_FROM_COOKIE(cookie);
1818 loi = lsm->lsm_oinfo[lap->lap_stripe];
1820 rc = obd_teardown_async_page(lov->lov_tgts[loi->loi_ost_idx]->ltd_exp,
1821 lsm, loi, lap->lap_sub_cookie);
1823 CERROR("unable to teardown sub cookie %p: %d\n",
1824 lap->lap_sub_cookie, rc);
1830 static int lov_enqueue_interpret(struct ptlrpc_request_set *rqset,
1833 struct lov_request_set *lovset = (struct lov_request_set *)data;
1835 rc = lov_fini_enqueue_set(lovset, lovset->set_ei->ei_mode, rc);
1839 static int lov_enqueue(struct obd_export *exp, struct obd_info *oinfo,
1840 struct obd_enqueue_info *einfo)
1842 struct lov_request_set *set;
1843 struct lov_request *req;
1844 struct list_head *pos;
1845 struct lov_obd *lov;
1850 ASSERT_LSM_MAGIC(oinfo->oi_md);
1852 /* we should never be asked to replay a lock this way. */
1853 LASSERT((einfo->ei_flags & LDLM_FL_REPLAY) == 0);
1855 if (!exp || !exp->exp_obd)
1858 lov = &exp->exp_obd->u.lov;
1859 rc = lov_prep_enqueue_set(exp, oinfo, einfo, &set);
1863 list_for_each (pos, &set->set_list) {
1864 req = list_entry(pos, struct lov_request, rq_link);
1866 rc = obd_enqueue(lov->lov_tgts[req->rq_idx]->ltd_exp,
1867 &req->rq_oi, einfo);
1872 if (einfo->ei_rqset && !list_empty(&einfo->ei_rqset->set_requests)) {
1874 LASSERT(einfo->ei_rqset->set_interpret == NULL);
1875 einfo->ei_rqset->set_interpret = lov_enqueue_interpret;
1876 einfo->ei_rqset->set_arg = (void *)set;
1880 rc = lov_fini_enqueue_set(set, einfo->ei_mode, rc);
1884 static int lov_match(struct obd_export *exp, struct lov_stripe_md *lsm,
1885 __u32 type, ldlm_policy_data_t *policy, __u32 mode,
1886 int *flags, void *data, struct lustre_handle *lockh)
1888 struct lov_request_set *set;
1889 struct obd_info oinfo;
1890 struct lov_request *req;
1891 struct list_head *pos;
1892 struct lov_obd *lov = &exp->exp_obd->u.lov;
1893 struct lustre_handle *lov_lockhp;
1894 int lov_flags, rc = 0;
1897 ASSERT_LSM_MAGIC(lsm);
1899 if (!exp || !exp->exp_obd)
1902 lov = &exp->exp_obd->u.lov;
1903 rc = lov_prep_match_set(exp, &oinfo, lsm, policy, mode, lockh, &set);
1907 list_for_each (pos, &set->set_list) {
1908 ldlm_policy_data_t sub_policy;
1909 req = list_entry(pos, struct lov_request, rq_link);
1910 lov_lockhp = set->set_lockh->llh_handles + req->rq_stripe;
1911 LASSERT(lov_lockhp);
1914 sub_policy.l_extent = req->rq_oi.oi_policy.l_extent;
1916 rc = obd_match(lov->lov_tgts[req->rq_idx]->ltd_exp,
1917 req->rq_oi.oi_md, type, &sub_policy,
1918 mode, &lov_flags, data, lov_lockhp);
1919 rc = lov_update_match_set(set, req, rc);
1923 lov_fini_match_set(set, mode, *flags);
1927 static int lov_change_cbdata(struct obd_export *exp,
1928 struct lov_stripe_md *lsm, ldlm_iterator_t it,
1931 struct lov_obd *lov;
1932 struct lov_oinfo *loi;
1936 ASSERT_LSM_MAGIC(lsm);
1938 if (!exp || !exp->exp_obd)
1941 lov = &exp->exp_obd->u.lov;
1942 for (i = 0; i < lsm->lsm_stripe_count; i++) {
1943 struct lov_stripe_md submd;
1945 loi = lsm->lsm_oinfo[i];
1946 submd.lsm_object_id = loi->loi_id;
1947 submd.lsm_stripe_count = 0;
1948 rc = obd_change_cbdata(lov->lov_tgts[loi->loi_ost_idx]->ltd_exp,
1954 static int lov_cancel(struct obd_export *exp, struct lov_stripe_md *lsm,
1955 __u32 mode, struct lustre_handle *lockh)
1957 struct lov_request_set *set;
1958 struct obd_info oinfo;
1959 struct lov_request *req;
1960 struct list_head *pos;
1961 struct lov_obd *lov = &exp->exp_obd->u.lov;
1962 struct lustre_handle *lov_lockhp;
1963 int err = 0, rc = 0;
1966 ASSERT_LSM_MAGIC(lsm);
1968 if (!exp || !exp->exp_obd)
1972 lov = &exp->exp_obd->u.lov;
1973 rc = lov_prep_cancel_set(exp, &oinfo, lsm, mode, lockh, &set);
1977 list_for_each (pos, &set->set_list) {
1978 req = list_entry(pos, struct lov_request, rq_link);
1979 lov_lockhp = set->set_lockh->llh_handles + req->rq_stripe;
1981 rc = obd_cancel(lov->lov_tgts[req->rq_idx]->ltd_exp,
1982 req->rq_oi.oi_md, mode, lov_lockhp);
1983 rc = lov_update_common_set(set, req, rc);
1985 CERROR("error: cancel objid "LPX64" subobj "
1986 LPX64" on OST idx %d: rc = %d\n",
1988 req->rq_oi.oi_md->lsm_object_id,
1994 lov_fini_cancel_set(set);
1998 static int lov_cancel_unused(struct obd_export *exp,
1999 struct lov_stripe_md *lsm, int flags, void *opaque)
2001 struct lov_obd *lov;
2002 struct lov_oinfo *loi;
2006 if (!exp || !exp->exp_obd)
2009 lov = &exp->exp_obd->u.lov;
2011 for (i = 0; i < lov->desc.ld_tgt_count; i++) {
2013 if (!lov->lov_tgts[i] || !lov->lov_tgts[i]->ltd_exp)
2016 err = obd_cancel_unused(lov->lov_tgts[i]->ltd_exp, NULL,
2024 ASSERT_LSM_MAGIC(lsm);
2026 for (i = 0; i < lsm->lsm_stripe_count; i++) {
2027 struct lov_stripe_md submd;
2030 loi = lsm->lsm_oinfo[i];
2031 if (!lov->lov_tgts[loi->loi_ost_idx] ||
2032 !lov->lov_tgts[loi->loi_ost_idx]->ltd_active)
2033 CDEBUG(D_HA, "lov idx %d inactive\n", loi->loi_ost_idx);
2035 submd.lsm_object_id = loi->loi_id;
2036 submd.lsm_stripe_count = 0;
2037 err = obd_cancel_unused(lov->lov_tgts[loi->loi_ost_idx]->ltd_exp,
2038 &submd, flags, opaque);
2039 if (err && lov->lov_tgts[loi->loi_ost_idx]->ltd_active) {
2040 CERROR("error: cancel unused objid "LPX64" subobj "LPX64
2041 " on OST idx %d: rc = %d\n", lsm->lsm_object_id,
2042 loi->loi_id, loi->loi_ost_idx, err);
2050 static int lov_join_lru(struct obd_export *exp,
2051 struct lov_stripe_md *lsm, int join)
2053 struct lov_obd *lov;
2054 struct lov_oinfo *loi;
2058 ASSERT_LSM_MAGIC(lsm);
2059 if (!exp || !exp->exp_obd)
2062 lov = &exp->exp_obd->u.lov;
2063 for (i = 0; i < lsm->lsm_stripe_count; i++) {
2064 struct lov_stripe_md submd;
2067 loi = lsm->lsm_oinfo[i];
2068 if (!lov->lov_tgts[loi->loi_ost_idx] ||
2069 !lov->lov_tgts[loi->loi_ost_idx]->ltd_active)
2070 CDEBUG(D_HA, "lov idx %d inactive\n", loi->loi_ost_idx);
2072 submd.lsm_object_id = loi->loi_id;
2073 submd.lsm_stripe_count = 0;
2074 rc = obd_join_lru(lov->lov_tgts[loi->loi_ost_idx]->ltd_exp,
2077 CERROR("join lru failed. objid: "LPX64" subobj: "LPX64
2078 " ostidx: %d rc: %d\n", lsm->lsm_object_id,
2079 loi->loi_id, loi->loi_ost_idx, rc);
2088 static int lov_statfs_interpret(struct ptlrpc_request_set *rqset,
2091 struct lov_request_set *lovset = (struct lov_request_set *)data;
2096 lovset->set_completes = 0;
2098 err = lov_fini_statfs_set(lovset);
2099 RETURN(rc ? rc : err);
2102 static int lov_statfs_async(struct obd_device *obd, struct obd_info *oinfo,
2103 __u64 max_age, struct ptlrpc_request_set *rqset)
2105 struct lov_request_set *set;
2106 struct lov_request *req;
2107 struct list_head *pos;
2108 struct lov_obd *lov;
2112 LASSERT(oinfo != NULL);
2113 LASSERT(oinfo->oi_osfs != NULL);
2116 rc = lov_prep_statfs_set(obd, oinfo, &set);
2120 list_for_each (pos, &set->set_list) {
2121 struct obd_device *osc_obd;
2123 req = list_entry(pos, struct lov_request, rq_link);
2125 osc_obd = class_exp2obd(lov->lov_tgts[req->rq_idx]->ltd_exp);
2126 rc = obd_statfs_async(osc_obd, &req->rq_oi, max_age, rqset);
2131 if (rc || list_empty(&rqset->set_requests)) {
2134 set->set_completes = 0;
2135 err = lov_fini_statfs_set(set);
2136 RETURN(rc ? rc : err);
2139 LASSERT(rqset->set_interpret == NULL);
2140 rqset->set_interpret = lov_statfs_interpret;
2141 rqset->set_arg = (void *)set;
2145 static int lov_statfs(struct obd_device *obd, struct obd_statfs *osfs,
2148 struct lov_obd *lov = &obd->u.lov;
2149 struct obd_statfs lov_sfs;
2155 /* We only get block data from the OBD */
2156 for (i = 0; i < lov->desc.ld_tgt_count; i++) {
2157 if (!lov->lov_tgts[i] || !lov->lov_tgts[i]->ltd_active) {
2158 CDEBUG(D_HA, "lov idx %d inactive\n", i);
2162 err = obd_statfs(class_exp2obd(lov->lov_tgts[i]->ltd_exp),
2165 if (lov->lov_tgts[i]->ltd_active && !rc)
2169 lov_update_statfs(class_exp2obd(lov->lov_tgts[i]->ltd_exp),
2170 osfs, &lov_sfs, set);
2174 err = lov_fini_statfs(obd, osfs, set);
2177 RETURN(rc ? rc : err);
2180 static int lov_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
2181 void *karg, void *uarg)
2183 struct obd_device *obddev = class_exp2obd(exp);
2184 struct lov_obd *lov = &obddev->u.lov;
2185 int i, rc, count = lov->desc.ld_tgt_count;
2186 struct obd_uuid *uuidp;
2190 case OBD_IOC_LOV_GET_CONFIG: {
2191 struct obd_ioctl_data *data;
2192 struct lov_desc *desc;
2197 if (obd_ioctl_getdata(&buf, &len, (void *)uarg))
2200 data = (struct obd_ioctl_data *)buf;
2202 if (sizeof(*desc) > data->ioc_inllen1) {
2203 obd_ioctl_freedata(buf, len);
2207 if (sizeof(uuidp->uuid) * count > data->ioc_inllen2) {
2208 obd_ioctl_freedata(buf, len);
2212 if (sizeof(__u32) * count > data->ioc_inllen3) {
2213 obd_ioctl_freedata(buf, len);
2217 desc = (struct lov_desc *)data->ioc_inlbuf1;
2218 memcpy(desc, &(lov->desc), sizeof(*desc));
2220 uuidp = (struct obd_uuid *)data->ioc_inlbuf2;
2221 genp = (__u32 *)data->ioc_inlbuf3;
2222 /* the uuid will be empty for deleted OSTs */
2223 for (i = 0; i < count; i++, uuidp++, genp++) {
2224 if (!lov->lov_tgts[i])
2226 *uuidp = lov->lov_tgts[i]->ltd_uuid;
2227 *genp = lov->lov_tgts[i]->ltd_gen;
2230 rc = copy_to_user((void *)uarg, buf, len);
2233 obd_ioctl_freedata(buf, len);
2236 case LL_IOC_LOV_SETSTRIPE:
2237 rc = lov_setstripe(exp, karg, uarg);
2239 case LL_IOC_LOV_GETSTRIPE:
2240 rc = lov_getstripe(exp, karg, uarg);
2242 case LL_IOC_LOV_SETEA:
2243 rc = lov_setea(exp, karg, uarg);
2252 for (i = 0; i < count; i++) {
2255 /* OST was disconnected */
2256 if (!lov->lov_tgts[i] || !lov->lov_tgts[i]->ltd_exp)
2259 err = obd_iocontrol(cmd, lov->lov_tgts[i]->ltd_exp,
2261 if (err == -ENODATA && cmd == OBD_IOC_POLL_QUOTACHECK) {
2264 if (lov->lov_tgts[i]->ltd_active) {
2265 CDEBUG(err == -ENOTTY ?
2266 D_IOCTL : D_WARNING,
2267 "iocontrol OSC %s on OST "
2268 "idx %d cmd %x: err = %d\n",
2269 lov_uuid2str(lov, i),
2286 static int lov_get_info(struct obd_export *exp, __u32 keylen,
2287 void *key, __u32 *vallen, void *val)
2289 struct obd_device *obddev = class_exp2obd(exp);
2290 struct lov_obd *lov = &obddev->u.lov;
2294 if (!vallen || !val)
2299 if (KEY_IS("lock_to_stripe")) {
2302 struct ldlm_lock *lock;
2303 struct lov_stripe_md *lsm;
2305 struct ldlm_res_id *res_id = &data->lock->l_resource->lr_name;
2306 struct lov_oinfo *loi;
2307 __u32 *stripe = val;
2309 if (*vallen < sizeof(*stripe))
2310 GOTO(out, rc = -EFAULT);
2311 *vallen = sizeof(*stripe);
2313 /* XXX This is another one of those bits that will need to
2314 * change if we ever actually support nested LOVs. It uses
2315 * the lock's export to find out which stripe it is. */
2316 /* XXX - it's assumed all the locks for deleted OSTs have
2317 * been cancelled. Also, the export for deleted OSTs will
2318 * be NULL and won't match the lock's export. */
2319 for (i = 0; i < data->lsm->lsm_stripe_count; i++) {
2320 loi = data->lsm->lsm_oinfo[i];
2321 if (!lov->lov_tgts[loi->loi_ost_idx])
2323 if (lov->lov_tgts[loi->loi_ost_idx]->ltd_exp ==
2324 data->lock->l_conn_export &&
2325 loi->loi_id == res_id->name[0] &&
2326 loi->loi_gr == res_id->name[1]) {
2331 LDLM_ERROR(data->lock, "lock on inode without such object");
2332 dump_lsm(D_ERROR, data->lsm);
2333 GOTO(out, rc = -ENXIO);
2334 } else if (KEY_IS("last_id")) {
2336 int size = sizeof(obd_id);
2337 for (i = 0; i < lov->desc.ld_tgt_count; i++) {
2338 if (!lov->lov_tgts[i] || !lov->lov_tgts[i]->ltd_active)
2340 rc = obd_get_info(lov->lov_tgts[i]->ltd_exp,
2341 keylen, key, &size, ids + i);
2346 } else if (KEY_IS(KEY_LOVDESC)) {
2347 struct lov_desc *desc_ret = val;
2348 *desc_ret = lov->desc;
2359 static int lov_set_info_async(struct obd_export *exp, obd_count keylen,
2360 void *key, obd_count vallen, void *val,
2361 struct ptlrpc_request_set *set)
2363 struct obd_device *obddev = class_exp2obd(exp);
2364 struct lov_obd *lov = &obddev->u.lov;
2365 int i, rc = 0, err, incr = 0, check_uuid = 0, do_inactive = 0;
2370 set = ptlrpc_prep_set();
2375 if (KEY_IS(KEY_NEXT_ID)) {
2376 if (vallen != lov->desc.ld_tgt_count * sizeof(obd_id))
2378 vallen = sizeof(obd_id);
2379 incr = sizeof(obd_id);
2381 } else if (KEY_IS("checksum")) {
2383 } else if (KEY_IS("mds_conn") || KEY_IS("unlinked")) {
2384 check_uuid = val ? 1 : 0;
2385 } else if (KEY_IS("evict_by_nid")) {
2387 do_inactive = incr = 0;
2393 for (i = 0; i < lov->desc.ld_tgt_count; i++, val = (char *)val + incr) {
2394 /* OST was disconnected */
2395 if (!lov->lov_tgts[i] || !lov->lov_tgts[i]->ltd_exp)
2398 /* OST is inactive and we don't want inactive OSCs */
2399 if (!lov->lov_tgts[i]->ltd_active && !do_inactive)
2402 /* Only want a specific OSC */
2404 !obd_uuid_equals(val, &lov->lov_tgts[i]->ltd_uuid))
2407 err = obd_set_info_async(lov->lov_tgts[i]->ltd_exp,
2408 keylen, key, vallen, val, set);
2414 err = ptlrpc_set_wait(set);
2417 ptlrpc_set_destroy(set);
2422 static int lov_checkmd(struct obd_export *exp, struct obd_export *md_exp,
2423 struct lov_stripe_md *lsm)
2431 LASSERT(lsm_op_find(lsm->lsm_magic) != NULL);
2432 rc = lsm_op_find(lsm->lsm_magic)->lsm_revalidate(lsm, md_exp->exp_obd);
2437 int lov_test_and_clear_async_rc(struct lov_stripe_md *lsm)
2439 struct lov_oinfo *loi;
2443 for (i = 0; i < lsm->lsm_stripe_count; i++) {
2444 loi = lsm->lsm_oinfo[i];
2445 if (loi->loi_ar.ar_rc && !rc)
2446 rc = loi->loi_ar.ar_rc;
2447 loi->loi_ar.ar_rc = 0;
2451 EXPORT_SYMBOL(lov_test_and_clear_async_rc);
2454 static int lov_extent_calc(struct obd_export *exp, struct lov_stripe_md *lsm,
2455 int cmd, __u64 *offset)
2458 __u32 ssize = lsm->lsm_stripe_size;
2461 do_div(start, ssize);
2462 start = start * ssize;
2464 CDEBUG(D_DLMTRACE, "offset "LPU64", stripe %u, start "LPU64
2465 ", end "LPU64"\n", *offset, ssize, start, start + ssize - 1);
2466 if (cmd == OBD_CALC_STRIPE_END) {
2467 *offset = start + ssize - 1;
2468 } else if (cmd == OBD_CALC_STRIPE_START) {
2479 struct lov_multi_wait {
2480 struct ldlm_lock *lock;
2486 int lov_complete_many(struct obd_export *exp, struct lov_stripe_md *lsm,
2487 struct lustre_handle *lockh)
2489 struct lov_lock_handles *lov_lockh = NULL;
2490 struct lustre_handle *lov_lockhp;
2491 struct lov_obd *lov;
2492 struct lov_oinfo *loi;
2493 struct lov_multi_wait *queues;
2497 ASSERT_LSM_MAGIC(lsm);
2499 if (!exp || !exp->exp_obd)
2502 LASSERT(lockh != NULL);
2503 if (lsm->lsm_stripe_count > 1) {
2504 lov_lockh = lov_handle2llh(lockh);
2505 if (lov_lockh == NULL) {
2506 CERROR("LOV: invalid lov lock handle %p\n", lockh);
2510 lov_lockhp = lov_lockh->llh_handles;
2515 OBD_ALLOC(queues, lsm->lsm_stripe_count * sizeof(*queues));
2517 GOTO(out, rc = -ENOMEM);
2519 lov = &exp->exp_obd->u.lov;
2520 for (i = 0, loi = lsm->lsm_oinfo; i < lsm->lsm_stripe_count;
2521 i++, loi++, lov_lockhp++) {
2522 struct ldlm_lock *lock;
2523 struct obd_device *obd;
2525 lock = ldlm_handle2lock(lov_lockhp);
2527 CDEBUG(D_HA, "lov idx %d subobj "LPX64" no lock?\n",
2528 loi->loi_ost_idx, loi->loi_id);
2529 queues[i].completed = 1;
2533 queues[i].lock = lock;
2534 init_waitqueue_entry(&(queues[i].wait), current);
2535 add_wait_queue(lock->l_waitq, &(queues[i].wait));
2537 obd = class_exp2obd(lock->l_conn_export);
2539 imp = obd->u.cli.cl_import;
2541 spin_lock(&imp->imp_lock);
2542 queues[i].generation = imp->imp_generation;
2543 spin_unlock(&imp->imp_lock);
2547 lwi = LWI_TIMEOUT_INTR(obd_timeout * HZ, ldlm_expired_completion_wait,
2548 interrupted_completion_wait, &lwd);
2549 rc = l_wait_event_added(check_multi_complete(queues, lsm), &lwi);
2551 for (i = 0; i < lsm->lsm_stripe_count; i++)
2552 remove_wait_queue(lock->l_waitq, &(queues[i].wait));
2554 if (rc == -EINTR || rc == -ETIMEDOUT) {
2560 if (lov_lockh != NULL)
2561 lov_llh_put(lov_lockh);
2566 void lov_stripe_lock(struct lov_stripe_md *md)
2568 LASSERT(md->lsm_lock_owner != cfs_current());
2569 spin_lock(&md->lsm_lock);
2570 LASSERT(md->lsm_lock_owner == NULL);
2571 md->lsm_lock_owner = cfs_current();
2573 EXPORT_SYMBOL(lov_stripe_lock);
2575 void lov_stripe_unlock(struct lov_stripe_md *md)
2577 LASSERT(md->lsm_lock_owner == cfs_current());
2578 md->lsm_lock_owner = NULL;
2579 spin_unlock(&md->lsm_lock);
2581 EXPORT_SYMBOL(lov_stripe_unlock);
2583 struct obd_ops lov_obd_ops = {
2584 .o_owner = THIS_MODULE,
2585 .o_setup = lov_setup,
2586 .o_precleanup = lov_precleanup,
2587 .o_cleanup = lov_cleanup,
2588 .o_process_config = lov_process_config,
2589 .o_connect = lov_connect,
2590 .o_disconnect = lov_disconnect,
2591 .o_statfs = lov_statfs,
2592 .o_statfs_async = lov_statfs_async,
2593 .o_packmd = lov_packmd,
2594 .o_unpackmd = lov_unpackmd,
2595 .o_checkmd = lov_checkmd,
2596 .o_create = lov_create,
2597 .o_destroy = lov_destroy,
2598 .o_getattr = lov_getattr,
2599 .o_getattr_async = lov_getattr_async,
2600 .o_setattr = lov_setattr,
2601 .o_setattr_async = lov_setattr_async,
2603 .o_brw_async = lov_brw_async,
2604 .o_prep_async_page = lov_prep_async_page,
2605 .o_queue_async_io = lov_queue_async_io,
2606 .o_set_async_flags = lov_set_async_flags,
2607 .o_queue_group_io = lov_queue_group_io,
2608 .o_trigger_group_io = lov_trigger_group_io,
2609 .o_teardown_async_page = lov_teardown_async_page,
2610 .o_merge_lvb = lov_merge_lvb,
2611 .o_adjust_kms = lov_adjust_kms,
2612 .o_punch = lov_punch,
2614 .o_enqueue = lov_enqueue,
2615 .o_match = lov_match,
2616 .o_change_cbdata = lov_change_cbdata,
2617 .o_cancel = lov_cancel,
2618 .o_cancel_unused = lov_cancel_unused,
2619 .o_join_lru = lov_join_lru,
2620 .o_iocontrol = lov_iocontrol,
2621 .o_get_info = lov_get_info,
2622 .o_set_info_async = lov_set_info_async,
2623 .o_extent_calc = lov_extent_calc,
2624 .o_llog_init = lov_llog_init,
2625 .o_llog_finish = lov_llog_finish,
2626 .o_notify = lov_notify,
2629 static quota_interface_t *quota_interface;
2630 extern quota_interface_t lov_quota_interface;
2632 cfs_mem_cache_t *lov_oinfo_slab;
2634 int __init lov_init(void)
2636 struct lprocfs_static_vars lvars;
2640 lov_oinfo_slab = cfs_mem_cache_create("lov_oinfo",
2641 sizeof(struct lov_oinfo),
2642 0, SLAB_HWCACHE_ALIGN);
2643 if (lov_oinfo_slab == NULL)
2645 lprocfs_init_vars(lov, &lvars);
2647 request_module("lquota");
2648 quota_interface = PORTAL_SYMBOL_GET(lov_quota_interface);
2649 init_obd_quota_ops(quota_interface, &lov_obd_ops);
2651 rc = class_register_type(&lov_obd_ops, lvars.module_vars,
2654 if (quota_interface)
2655 PORTAL_SYMBOL_PUT(lov_quota_interface);
2656 rc2 = cfs_mem_cache_destroy(lov_oinfo_slab);
2664 static void /*__exit*/ lov_exit(void)
2668 if (quota_interface)
2669 PORTAL_SYMBOL_PUT(lov_quota_interface);
2671 class_unregister_type(LUSTRE_LOV_NAME);
2672 rc = cfs_mem_cache_destroy(lov_oinfo_slab);
2676 MODULE_AUTHOR("Cluster File Systems, Inc. <info@clusterfs.com>");
2677 MODULE_DESCRIPTION("Lustre Logical Object Volume OBD driver");
2678 MODULE_LICENSE("GPL");
2680 cfs_module(lov, LUSTRE_VERSION_STRING, lov_init, lov_exit);