1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
4 * Copyright (C) 2002, 2003 Cluster File Systems, Inc.
5 * Author: Phil Schwan <phil@clusterfs.com>
6 * Peter Braam <braam@clusterfs.com>
7 * Mike Shaver <shaver@clusterfs.com>
9 * This file is part of Lustre, http://www.lustre.org.
11 * Lustre is free software; you can redistribute it and/or
12 * modify it under the terms of version 2 of the GNU General Public
13 * License as published by the Free Software Foundation.
15 * Lustre is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with Lustre; if not, write to the Free Software
22 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
26 # define EXPORT_SYMTAB
28 #define DEBUG_SUBSYSTEM S_LOV
30 #include <linux/slab.h>
31 #include <linux/module.h>
32 #include <linux/init.h>
33 #include <linux/slab.h>
34 #include <linux/pagemap.h>
35 #include <linux/seq_file.h>
36 #include <asm/div64.h>
38 #include <liblustre.h>
41 #include <linux/obd_support.h>
42 #include <linux/lustre_lib.h>
43 #include <linux/lustre_net.h>
44 #include <linux/lustre_idl.h>
45 #include <linux/lustre_dlm.h>
46 #include <linux/lustre_mds.h>
47 #include <linux/obd_class.h>
48 #include <linux/obd_lov.h>
49 #include <linux/obd_ost.h>
50 #include <linux/lprocfs_status.h>
52 #include "lov_internal.h"
54 static int lov_stripe_offset(struct lov_stripe_md *lsm, obd_off lov_off,
55 int stripeno, obd_off *obd_off);
57 struct lov_lock_handles {
58 struct portals_handle llh_handle;
59 atomic_t llh_refcount;
61 struct lustre_handle llh_handles[0];
64 static void lov_llh_addref(void *llhp)
66 struct lov_lock_handles *llh = llhp;
68 atomic_inc(&llh->llh_refcount);
69 CDEBUG(D_INFO, "GETting llh %p : new refcount %d\n", llh,
70 atomic_read(&llh->llh_refcount));
73 static struct lov_lock_handles *lov_llh_new(struct lov_stripe_md *lsm)
75 struct lov_lock_handles *llh;
77 OBD_ALLOC(llh, sizeof *llh +
78 sizeof(*llh->llh_handles) * lsm->lsm_stripe_count);
80 CERROR("out of memory\n");
83 atomic_set(&llh->llh_refcount, 2);
84 llh->llh_stripe_count = lsm->lsm_stripe_count;
85 INIT_LIST_HEAD(&llh->llh_handle.h_link);
86 class_handle_hash(&llh->llh_handle, lov_llh_addref);
90 static struct lov_lock_handles *lov_handle2llh(struct lustre_handle *handle)
93 LASSERT(handle != NULL);
94 RETURN(class_handle2object(handle->cookie));
97 static void lov_llh_put(struct lov_lock_handles *llh)
99 CDEBUG(D_INFO, "PUTting llh %p : new refcount %d\n", llh,
100 atomic_read(&llh->llh_refcount) - 1);
101 LASSERT(atomic_read(&llh->llh_refcount) > 0 &&
102 atomic_read(&llh->llh_refcount) < 0x5a5a);
103 if (atomic_dec_and_test(&llh->llh_refcount)) {
104 LASSERT(list_empty(&llh->llh_handle.h_link));
105 OBD_FREE(llh, sizeof *llh +
106 sizeof(*llh->llh_handles) * llh->llh_stripe_count);
110 static void lov_llh_destroy(struct lov_lock_handles *llh)
112 class_handle_unhash(&llh->llh_handle);
117 #define MAX_STRING_SIZE 128
118 static int lov_connect_obd(struct obd_device *obd, struct lov_tgt_desc *tgt,
119 int activate, unsigned long connect_flags)
121 struct lov_obd *lov = &obd->u.lov;
122 struct obd_uuid *tgt_uuid = &tgt->uuid;
123 struct obd_device *tgt_obd;
124 struct obd_uuid lov_osc_uuid = { "LOV_OSC_UUID" };
125 struct lustre_handle conn = {0, };
126 struct proc_dir_entry *lov_proc_dir;
130 tgt_obd = class_find_client_obd(tgt_uuid, LUSTRE_OSC_NAME,
134 CERROR("Target %s not attached\n", tgt_uuid->uuid);
138 if (!tgt_obd->obd_set_up) {
139 CERROR("Target %s not set up\n", tgt_uuid->uuid);
144 tgt_obd->obd_no_recov = 0;
145 ptlrpc_activate_import(tgt_obd->u.cli.cl_import);
148 if (tgt_obd->u.cli.cl_import->imp_invalid) {
149 CERROR("not connecting OSC %s; administratively "
150 "disabled\n", tgt_uuid->uuid);
151 rc = obd_register_observer(tgt_obd, obd);
153 CERROR("Target %s register_observer error %d; "
154 "will not be able to reactivate\n",
160 rc = obd_connect(&conn, tgt_obd, &lov_osc_uuid, connect_flags);
162 CERROR("Target %s connect error %d\n", tgt_uuid->uuid, rc);
165 tgt->ltd_exp = class_conn2export(&conn);
167 rc = obd_register_observer(tgt_obd, obd);
169 CERROR("Target %s register_observer error %d\n",
171 obd_disconnect(tgt->ltd_exp, 0);
177 lov->desc.ld_active_tgt_count++;
179 lov_proc_dir = lprocfs_srch(obd->obd_proc_entry, "target_obds");
181 struct obd_device *osc_obd = class_conn2obd(&conn);
182 struct proc_dir_entry *osc_symlink;
183 char name[MAX_STRING_SIZE + 1];
185 LASSERT(osc_obd != NULL);
186 LASSERT(osc_obd->obd_type != NULL);
187 LASSERT(osc_obd->obd_type->typ_name != NULL);
188 name[MAX_STRING_SIZE] = '\0';
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);
207 static int lov_connect(struct lustre_handle *conn, struct obd_device *obd,
208 struct obd_uuid *cluuid, unsigned long connect_flags)
210 struct lov_obd *lov = &obd->u.lov;
211 struct lov_tgt_desc *tgt;
212 struct obd_export *exp;
216 rc = class_connect(conn, obd, cluuid);
220 exp = class_conn2export(conn);
222 /* We don't want to actually do the underlying connections more than
223 * once, so keep track. */
225 if (lov->refcount > 1) {
226 class_export_put(exp);
230 /* connect_flags is the MDS number, save for use in lov_add_obd */
231 lov->lov_connect_flags = connect_flags;
232 for (i = 0, tgt = lov->tgts; i < lov->desc.ld_tgt_count; i++, tgt++) {
233 if (obd_uuid_empty(&tgt->uuid))
235 rc = lov_connect_obd(obd, tgt, 0, connect_flags);
240 class_export_put(exp);
245 struct obd_uuid uuid;
247 --lov->desc.ld_active_tgt_count;
249 /* save for CERROR below; (we know it's terminated) */
251 rc2 = obd_disconnect(tgt->ltd_exp, 0);
253 CERROR("error: LOV target %s disconnect on OST idx %d: "
254 "rc = %d\n", uuid.uuid, i, rc2);
256 class_disconnect(exp, 0);
260 static int lov_disconnect_obd(struct obd_device *obd, struct lov_tgt_desc *tgt,
263 struct proc_dir_entry *lov_proc_dir;
264 struct obd_device *osc_obd = class_exp2obd(tgt->ltd_exp);
265 struct lov_obd *lov = &obd->u.lov;
269 lov_proc_dir = lprocfs_srch(obd->obd_proc_entry, "target_obds");
271 struct proc_dir_entry *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(tgt->ltd_exp->exp_obd, NULL);
294 rc = obd_disconnect(tgt->ltd_exp, flags);
297 CERROR("Target %s disconnect error %d\n",
305 lov->desc.ld_active_tgt_count--;
312 static int lov_disconnect(struct obd_export *exp, int flags)
314 struct obd_device *obd = class_exp2obd(exp);
315 struct lov_obd *lov = &obd->u.lov;
316 struct lov_tgt_desc *tgt;
323 /* Only disconnect the underlying layers on the final disconnect. */
325 if (lov->refcount != 0)
328 for (i = 0, tgt = lov->tgts; i < lov->desc.ld_tgt_count; i++, tgt++) {
330 lov_disconnect_obd(obd, tgt, flags);
334 rc = class_disconnect(exp, 0);
340 * -EINVAL : UUID can't be found in the LOV's target list
341 * -ENOTCONN: The UUID is found, but the target connection is bad (!)
342 * -EBADF : The UUID is found, but the OBD is the wrong type (!)
344 static int lov_set_osc_active(struct lov_obd *lov, struct obd_uuid *uuid,
347 struct obd_device *obd;
348 struct lov_tgt_desc *tgt;
352 CDEBUG(D_INFO, "Searching in lov %p for uuid %s (activate=%d)\n",
353 lov, uuid->uuid, activate);
355 spin_lock(&lov->lov_lock);
356 for (i = 0, tgt = lov->tgts; i < lov->desc.ld_tgt_count; i++, tgt++) {
357 CDEBUG(D_INFO, "lov idx %d is %s conn "LPX64"\n",
358 i, tgt->uuid.uuid, tgt->ltd_exp->exp_handle.h_cookie);
359 if (strncmp(uuid->uuid, tgt->uuid.uuid, sizeof uuid->uuid) == 0)
363 if (i == lov->desc.ld_tgt_count)
364 GOTO(out, rc = -EINVAL);
366 obd = class_exp2obd(tgt->ltd_exp);
368 /* This can happen if OST failure races with node shutdown */
369 GOTO(out, rc = -ENOTCONN);
372 CDEBUG(D_INFO, "Found OBD %s=%s device %d (%p) type %s at LOV idx %d\n",
373 obd->obd_name, obd->obd_uuid.uuid, obd->obd_minor, obd,
374 obd->obd_type->typ_name, i);
375 LASSERT(strcmp(obd->obd_type->typ_name, LUSTRE_OSC_NAME) == 0);
377 if (tgt->active == activate) {
378 CDEBUG(D_INFO, "OBD %p already %sactive!\n", obd,
379 activate ? "" : "in");
383 CDEBUG(D_INFO, "Marking OBD %p %sactive\n", obd, activate ? "" : "in");
385 tgt->active = activate;
387 lov->desc.ld_active_tgt_count++;
389 lov->desc.ld_active_tgt_count--;
393 spin_unlock(&lov->lov_lock);
397 static int lov_notify(struct obd_device *obd, struct obd_device *watched,
398 int active, void *data)
401 struct obd_uuid *uuid;
404 if (strcmp(watched->obd_type->typ_name, LUSTRE_OSC_NAME)) {
405 CERROR("unexpected notification of %s %s!\n",
406 watched->obd_type->typ_name,
410 uuid = &watched->u.cli.cl_import->imp_target_uuid;
412 /* Set OSC as active before notifying the observer, so the
413 * observer can use the OSC normally.
415 rc = lov_set_osc_active(&obd->u.lov, uuid, active);
417 CERROR("%sactivation of %s failed: %d\n",
418 active ? "" : "de", uuid->uuid, rc);
422 if (obd->obd_observer)
423 /* Pass the notification up the chain. */
424 rc = obd_notify(obd->obd_observer, watched, active, data);
429 int lov_attach(struct obd_device *dev, obd_count len, void *data)
431 struct lprocfs_static_vars lvars;
434 lprocfs_init_vars(lov, &lvars);
435 rc = lprocfs_obd_attach(dev, lvars.obd_vars);
438 struct proc_dir_entry *entry;
440 entry = create_proc_entry("target_obd", 0444,
441 dev->obd_proc_entry);
445 entry->proc_fops = &lov_proc_target_fops;
453 int lov_detach(struct obd_device *dev)
455 return lprocfs_obd_detach(dev);
458 static int lov_setup(struct obd_device *obd, obd_count len, void *buf)
460 struct lustre_cfg *lcfg = buf;
461 struct lov_desc *desc;
462 struct lov_obd *lov = &obd->u.lov;
466 if (lcfg->lcfg_inllen1 < 1) {
467 CERROR("LOV setup requires a descriptor\n");
471 desc = (struct lov_desc *)lcfg->lcfg_inlbuf1;
472 if (sizeof(*desc) > lcfg->lcfg_inllen1) {
473 CERROR("descriptor size wrong: %d > %d\n",
474 (int)sizeof(*desc), lcfg->lcfg_inllen1);
478 /* Because of 64-bit divide/mod operations only work with a 32-bit
479 * divisor in a 32-bit kernel, we cannot support a stripe width
480 * of 4GB or larger on 32-bit CPUs.
483 count = desc->ld_default_stripe_count;
484 if (count && (count * desc->ld_default_stripe_size) > ~0UL) {
485 CERROR("LOV: stripe width "LPU64"x%u > %lu on 32-bit system\n",
486 desc->ld_default_stripe_size, count, ~0UL);
490 lov->bufsize = LOV_MAX_TGT_COUNT * sizeof(struct lov_tgt_desc);
491 OBD_ALLOC(lov->tgts, lov->bufsize);
492 if (lov->tgts == NULL) {
494 CERROR("couldn't allocate %d bytes for target table.\n",
499 desc->ld_tgt_count = 0;
500 desc->ld_active_tgt_count = 0;
502 spin_lock_init(&lov->lov_lock);
503 sema_init(&lov->lov_llog_sem, 1);
508 static int lov_cleanup(struct obd_device *obd, int flags)
510 struct lov_obd *lov = &obd->u.lov;
512 OBD_FREE(lov->tgts, lov->bufsize);
517 lov_add_obd(struct obd_device *obd, struct obd_uuid *uuidp, int index, int gen)
519 struct lov_obd *lov = &obd->u.lov;
520 struct lov_tgt_desc *tgt;
524 CDEBUG(D_CONFIG, "uuid: %s idx: %d gen: %d\n",
525 uuidp->uuid, index, gen);
527 if ((index < 0) || (index >= LOV_MAX_TGT_COUNT)) {
528 CERROR("request to add OBD %s at invalid index: %d\n",
534 CERROR("request to add OBD %s with invalid generation: %d\n",
539 tgt = lov->tgts + index;
540 if (!obd_uuid_empty(&tgt->uuid)) {
541 CERROR("OBD already assigned at LOV target index %d\n",
547 /* XXX - add a sanity check on the generation number. */
550 if (index >= lov->desc.ld_tgt_count)
551 lov->desc.ld_tgt_count = index + 1;
553 CDEBUG(D_CONFIG, "idx: %d ltd_gen: %d ld_tgt_count: %d\n",
554 index, tgt->ltd_gen, lov->desc.ld_tgt_count);
556 if (lov->refcount == 0)
560 struct obd_device *osc_obd;
562 osc_obd = class_exp2obd(tgt->ltd_exp);
564 osc_obd->obd_no_recov = 0;
567 rc = lov_connect_obd(obd, tgt, 1, lov->lov_connect_flags);
571 if (obd->obd_observer) {
572 /* tell the mds_lov about the new target */
573 rc = obd_notify(obd->obd_observer, tgt->ltd_exp->exp_obd, 1,
579 if (rc && tgt->ltd_exp != NULL)
580 lov_disconnect_obd(obd, tgt, 0);
585 lov_del_obd(struct obd_device *obd, struct obd_uuid *uuidp, int index, int gen)
587 struct lov_obd *lov = &obd->u.lov;
588 struct lov_tgt_desc *tgt;
589 int count = lov->desc.ld_tgt_count;
593 CDEBUG(D_CONFIG, "uuid: %s idx: %d gen: %d\n",
594 uuidp->uuid, index, gen);
596 if (index >= count) {
597 CERROR("LOV target index %d >= number of LOV OBDs %d.\n",
602 tgt = lov->tgts + index;
604 if (obd_uuid_empty(&tgt->uuid)) {
605 CERROR("LOV target at index %d is not setup.\n", index);
609 if (strncmp(uuidp->uuid, tgt->uuid.uuid, sizeof uuidp->uuid) != 0) {
610 CERROR("LOV target UUID %s at index %d doesn't match %s.\n",
611 tgt->uuid.uuid, index, uuidp->uuid);
616 struct obd_device *osc_obd;
618 osc_obd = class_exp2obd(tgt->ltd_exp);
620 osc_obd->obd_no_recov = 1;
621 rc = obd_llog_finish(osc_obd, &osc_obd->obd_llogs, 1);
623 CERROR("osc_llog_finish error: %d\n", rc);
625 lov_disconnect_obd(obd, tgt, 0);
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 /* lt_gen = 0 will mean it will not match the gen of any valid loi */
633 memset(tgt, 0, sizeof(*tgt));
635 CDEBUG(D_CONFIG, "uuid: %s idx: %d gen: %d exp: %p active: %d\n",
636 tgt->uuid.uuid, index, tgt->ltd_gen, tgt->ltd_exp, tgt->active);
641 static int lov_process_config(struct obd_device *obd, obd_count len, void *buf)
643 struct lustre_cfg *lcfg = buf;
644 struct obd_uuid obd_uuid;
651 switch(cmd = lcfg->lcfg_command) {
652 case LCFG_LOV_ADD_OBD:
653 case LCFG_LOV_DEL_OBD: {
654 if (lcfg->lcfg_inllen1 > sizeof(obd_uuid.uuid))
655 GOTO(out, rc = -EINVAL);
657 obd_str2uuid(&obd_uuid, lcfg->lcfg_inlbuf1);
659 if (sscanf(lcfg->lcfg_inlbuf2, "%d", &index) != 1)
660 GOTO(out, rc = -EINVAL);
661 if (sscanf(lcfg->lcfg_inlbuf3, "%d", &gen) != 1)
662 GOTO(out, rc = -EINVAL);
663 if (cmd == LCFG_LOV_ADD_OBD)
664 rc = lov_add_obd(obd, &obd_uuid, index, gen);
666 rc = lov_del_obd(obd, &obd_uuid, index, gen);
670 CERROR("Unknown command: %d\n", lcfg->lcfg_command);
671 GOTO(out, rc = -EINVAL);
679 /* compute object size given "stripeno" and the ost size */
680 static obd_size lov_stripe_size(struct lov_stripe_md *lsm, obd_size ost_size,
683 unsigned long ssize = lsm->lsm_stripe_size;
684 unsigned long swidth = ssize * lsm->lsm_stripe_count;
685 unsigned long stripe_size;
691 /* do_div(a, b) returns a % b, and a = a / b */
692 stripe_size = do_div(ost_size, ssize);
694 lov_size = ost_size * swidth + stripeno * ssize + stripe_size;
696 lov_size = (ost_size - 1) * swidth + (stripeno + 1) * ssize;
701 static void lov_merge_attrs(struct obdo *tgt, struct obdo *src, obd_flag valid,
702 struct lov_stripe_md *lsm, int stripeno, int *set)
704 valid &= src->o_valid;
707 if (valid & OBD_MD_FLSIZE) {
708 /* this handles sparse files properly */
711 lov_size = lov_stripe_size(lsm, src->o_size, stripeno);
712 if (lov_size > tgt->o_size)
713 tgt->o_size = lov_size;
715 if (valid & OBD_MD_FLBLOCKS)
716 tgt->o_blocks += src->o_blocks;
717 if (valid & OBD_MD_FLBLKSZ)
718 tgt->o_blksize += src->o_blksize;
719 if (valid & OBD_MD_FLCTIME && tgt->o_ctime < src->o_ctime)
720 tgt->o_ctime = src->o_ctime;
721 if (valid & OBD_MD_FLMTIME && tgt->o_mtime < src->o_mtime)
722 tgt->o_mtime = src->o_mtime;
724 memcpy(tgt, src, sizeof(*tgt));
725 tgt->o_id = lsm->lsm_object_id;
726 if (valid & OBD_MD_FLSIZE)
727 tgt->o_size = lov_stripe_size(lsm,src->o_size,stripeno);
733 #define log2(n) ffz(~(n))
736 static int lov_clear_orphans(struct obd_export *export, struct obdo *src_oa,
737 struct lov_stripe_md **ea,
738 struct obd_trans_info *oti)
742 struct obd_uuid *ost_uuid = NULL;
746 LASSERT(src_oa->o_valid & OBD_MD_FLFLAGS &&
747 src_oa->o_flags == OBD_FL_DELORPHAN);
749 lov = &export->exp_obd->u.lov;
751 tmp_oa = obdo_alloc();
755 if (src_oa->o_valid & OBD_MD_FLINLINE) {
756 ost_uuid = (struct obd_uuid *)src_oa->o_inline;
757 CDEBUG(D_HA, "clearing orphans only for %s\n",
761 for (i = 0; i < lov->desc.ld_tgt_count; i++) {
762 struct lov_stripe_md obj_md;
763 struct lov_stripe_md *obj_mdp = &obj_md;
766 /* if called for a specific target, we don't
767 care if it is not active. */
768 if (lov->tgts[i].active == 0 && ost_uuid == NULL) {
769 CDEBUG(D_HA, "lov idx %d inactive\n", i);
773 if (ost_uuid && !obd_uuid_equals(ost_uuid, &lov->tgts[i].uuid))
776 memcpy(tmp_oa, src_oa, sizeof(*tmp_oa));
778 /* XXX: LOV STACKING: use real "obj_mdp" sub-data */
779 err = obd_create(lov->tgts[i].ltd_exp, tmp_oa, &obj_mdp, oti);
781 /* This export will be disabled until it is recovered,
782 and then orphan recovery will be completed. */
783 CERROR("error in orphan recovery on OST idx %d/%d: "
784 "rc = %d\n", i, lov->desc.ld_tgt_count, err);
793 #define LOV_CREATE_RESEED_INTERVAL 1000
795 /* the LOV expects oa->o_id to be set to the LOV object id */
796 static int lov_create(struct obd_export *exp, struct obdo *src_oa,
797 struct lov_stripe_md **ea, struct obd_trans_info *oti)
799 static int ost_start_idx, ost_start_count;
801 struct lov_stripe_md *lsm;
802 struct lov_oinfo *loi = NULL;
803 struct obdo *tmp_oa, *ret_oa;
804 struct llog_cookie *cookies = NULL;
805 unsigned ost_count, ost_idx;
806 int set = 0, obj_alloc = 0, cookie_sent = 0, rc = 0, i;
811 if ((src_oa->o_valid & OBD_MD_FLFLAGS) &&
812 src_oa->o_flags == OBD_FL_DELORPHAN) {
813 rc = lov_clear_orphans(exp, src_oa, ea, oti);
820 lov = &exp->exp_obd->u.lov;
822 if (!lov->desc.ld_active_tgt_count)
825 /* Recreate a specific object id at the given OST index */
826 if ((src_oa->o_valid & OBD_MD_FLFLAGS) &&
827 (src_oa->o_flags & OBD_FL_RECREATE_OBJS)) {
828 struct lov_stripe_md obj_md;
829 struct lov_stripe_md *obj_mdp = &obj_md;
831 ost_idx = src_oa->o_nlink;
835 if (ost_idx >= lov->desc.ld_tgt_count)
837 for (i = 0; i < lsm->lsm_stripe_count; i++) {
838 if (lsm->lsm_oinfo[i].loi_ost_idx == ost_idx) {
839 if (lsm->lsm_oinfo[i].loi_id != src_oa->o_id ||
840 lsm->lsm_oinfo[i].loi_gr != src_oa->o_gr) {
846 if (i == lsm->lsm_stripe_count)
849 rc = obd_create(lov->tgts[ost_idx].ltd_exp, src_oa,
854 ret_oa = obdo_alloc();
858 tmp_oa = obdo_alloc();
860 GOTO(out_oa, rc = -ENOMEM);
865 ost_count = lov_get_stripecnt(lov, 0);
867 /* If the MDS file was truncated up to some size, stripe over
868 * enough OSTs to allow the file to be created at that size. */
869 if (src_oa->o_valid & OBD_MD_FLSIZE) {
870 stripes=((src_oa->o_size+LUSTRE_STRIPE_MAXBYTES)>>12)-1;
871 do_div(stripes, (__u32)(LUSTRE_STRIPE_MAXBYTES >> 12));
873 if (stripes > lov->desc.ld_active_tgt_count)
875 if (stripes < ost_count)
881 rc = lov_alloc_memmd(&lsm, stripes, lov->desc.ld_pattern ?
882 lov->desc.ld_pattern : LOV_PATTERN_RAID0);
889 ost_count = lov->desc.ld_tgt_count;
891 LASSERT(src_oa->o_gr > 0);
892 LASSERT(src_oa->o_valid & OBD_MD_FLID);
893 lsm->lsm_object_id = src_oa->o_id;
894 lsm->lsm_object_gr = src_oa->o_gr;
895 if (!lsm->lsm_stripe_size)
896 lsm->lsm_stripe_size = lov->desc.ld_default_stripe_size;
897 if (!lsm->lsm_pattern) {
898 lsm->lsm_pattern = lov->desc.ld_pattern ?
899 lov->desc.ld_pattern : LOV_PATTERN_RAID0;
902 if (*ea == NULL || lsm->lsm_oinfo[0].loi_ost_idx >= ost_count) {
903 if (--ost_start_count <= 0) {
904 ost_start_idx = ll_insecure_random_int();
905 ost_start_count = LOV_CREATE_RESEED_INTERVAL;
906 } else if (lsm->lsm_stripe_count >=
907 lov->desc.ld_active_tgt_count) {
908 /* If we allocate from all of the stripes, make the
909 * next file start on the next OST. */
912 ost_idx = ost_start_idx % ost_count;
914 ost_idx = lsm->lsm_oinfo[0].loi_ost_idx;
917 CDEBUG(D_INODE, "allocating %d subobjs for objid "LPX64" at idx %d\n",
918 lsm->lsm_stripe_count, lsm->lsm_object_id, ost_idx);
920 /* XXX LOV STACKING: need to figure out how many real OSCs */
921 if (oti && (src_oa->o_valid & OBD_MD_FLCOOKIE)) {
922 oti_alloc_cookies(oti, lsm->lsm_stripe_count);
923 if (!oti->oti_logcookies)
924 GOTO(out_cleanup, rc = -ENOMEM);
925 cookies = oti->oti_logcookies;
928 loi = lsm->lsm_oinfo;
929 for (i = 0; i < ost_count; i++, ost_idx = (ost_idx + 1) % ost_count) {
930 struct lov_stripe_md obj_md;
931 struct lov_stripe_md *obj_mdp = &obj_md;
935 if (lov->tgts[ost_idx].active == 0) {
936 if (!obd_uuid_empty(&lov->tgts[ost_idx].uuid))
937 CDEBUG(D_HA, "lov idx %d inactive\n", ost_idx);
941 /* create data objects with "parent" OA */
942 memcpy(tmp_oa, src_oa, sizeof(*tmp_oa));
944 /* XXX When we start creating objects on demand, we need to
945 * make sure that we always create the object on the
946 * stripe which holds the existing file size.
948 if (src_oa->o_valid & OBD_MD_FLSIZE) {
949 if (lov_stripe_offset(lsm, src_oa->o_size, i,
950 &tmp_oa->o_size) < 0 &&
954 CDEBUG(D_INODE, "stripe %d has size "LPU64"/"LPU64"\n",
955 i, tmp_oa->o_size, src_oa->o_size);
959 /* XXX: LOV STACKING: use real "obj_mdp" sub-data */
960 err = obd_create(lov->tgts[ost_idx].ltd_exp, tmp_oa, &obj_mdp,
963 if (lov->tgts[ost_idx].active) {
964 CERROR("error creating objid "LPX64" sub-object"
965 " on OST idx %d/%d: rc = %d\n",
966 src_oa->o_id, ost_idx,
967 lsm->lsm_stripe_count, err);
969 CERROR("obd_create returned invalid "
979 oti->oti_objid[ost_idx] = tmp_oa->o_id;
980 loi->loi_id = tmp_oa->o_id;
981 loi->loi_gr = tmp_oa->o_gr;
982 loi->loi_ost_idx = ost_idx;
983 loi->loi_ost_gen = lov->tgts[ost_idx].ltd_gen;
984 CDEBUG(D_INODE, "objid "LPX64" has subobj "LPX64" at "
985 "idx %d gen %d\n", lsm->lsm_object_id, loi->loi_id,
986 ost_idx, loi->loi_ost_gen);
988 lov_merge_attrs(ret_oa, tmp_oa, tmp_oa->o_valid, lsm,
993 ++oti->oti_logcookies;
994 if (tmp_oa->o_valid & OBD_MD_FLCOOKIE)
999 /* If we have allocated enough objects, we are OK */
1000 if (obj_alloc == lsm->lsm_stripe_count)
1001 GOTO(out_done, rc = 0);
1004 if (obj_alloc == 0) {
1007 GOTO(out_cleanup, rc);
1010 /* If we were passed specific striping params, then a failure to
1011 * meet those requirements is an error, since we can't reallocate
1012 * that memory (it might be part of a larger array or something).
1014 * We can only get here if lsm_stripe_count was originally > 1.
1017 CERROR("can't lstripe objid "LPX64": have %u want %u, rc %d\n",
1018 lsm->lsm_object_id, obj_alloc, lsm->lsm_stripe_count,rc);
1021 GOTO(out_cleanup, rc);
1023 struct lov_stripe_md *lsm_new;
1024 /* XXX LOV STACKING call into osc for sizes */
1025 unsigned oldsize, newsize;
1027 if (oti && cookies && cookie_sent) {
1028 oldsize = lsm->lsm_stripe_count * sizeof(*cookies);
1029 newsize = obj_alloc * sizeof(*cookies);
1031 oti_alloc_cookies(oti, obj_alloc);
1032 if (oti->oti_logcookies) {
1033 memcpy(oti->oti_logcookies, cookies, newsize);
1034 OBD_FREE(cookies, oldsize);
1035 cookies = oti->oti_logcookies;
1037 CWARN("'leaking' %d bytes\n", oldsize-newsize);
1041 CWARN("using fewer stripes for object "LPX64": old %u new %u\n",
1042 lsm->lsm_object_id, lsm->lsm_stripe_count, obj_alloc);
1043 oldsize = lov_stripe_md_size(lsm->lsm_stripe_count);
1044 newsize = lov_stripe_md_size(obj_alloc);
1045 OBD_ALLOC(lsm_new, newsize);
1046 if (lsm_new != NULL) {
1047 memcpy(lsm_new, lsm, newsize);
1048 lsm_new->lsm_stripe_count = obj_alloc;
1049 OBD_FREE(lsm, oldsize);
1052 CWARN("'leaking' %d bytes\n", oldsize - newsize);
1059 if (src_oa->o_valid & OBD_MD_FLSIZE &&
1060 ret_oa->o_size != src_oa->o_size) {
1061 CERROR("original size "LPU64" isn't new object size "LPU64"\n",
1062 src_oa->o_size, ret_oa->o_size);
1065 ret_oa->o_id = src_oa->o_id;
1066 ret_oa->o_gr = src_oa->o_gr;
1067 ret_oa->o_valid |= OBD_MD_FLGROUP;
1068 memcpy(src_oa, ret_oa, sizeof(*src_oa));
1074 if (oti && cookies) {
1075 oti->oti_logcookies = cookies;
1077 oti_free_cookies(oti);
1078 src_oa->o_valid &= ~OBD_MD_FLCOOKIE;
1080 src_oa->o_valid |= OBD_MD_FLCOOKIE;
1086 while (obj_alloc-- > 0) {
1087 struct obd_export *sub_exp;
1091 sub_exp = lov->tgts[loi->loi_ost_idx].ltd_exp;
1092 /* destroy already created objects here */
1093 memcpy(tmp_oa, src_oa, sizeof(*tmp_oa));
1094 tmp_oa->o_id = loi->loi_id;
1096 err = obd_destroy(sub_exp, tmp_oa, NULL, oti);
1098 CERROR("Failed to uncreate objid "LPX64" subobj "LPX64
1099 " on OST idx %d: rc = %d\n", src_oa->o_id,
1100 loi->loi_id, loi->loi_ost_idx, err);
1103 obd_free_memmd(exp, &lsm);
1107 static int lov_revalidate_policy(struct lov_obd *lov, struct lov_stripe_md *lsm)
1109 static int next_idx = 0;
1110 struct lov_tgt_desc *tgt;
1113 /* XXX - we should do something clever and take lsm
1114 * into account but just do round robin for now. */
1116 /* last_idx must always be less that count because
1117 * ld_tgt_count currently cannot shrink. */
1118 count = lov->desc.ld_tgt_count;
1120 for (i = next_idx, tgt = lov->tgts + i; i < count; i++, tgt++) {
1122 next_idx = (i + 1) % count;
1127 for (i = 0, tgt = lov->tgts; i < next_idx; i++, tgt++) {
1129 next_idx = (i + 1) % count;
1137 #define lsm_bad_magic(LSMP) \
1139 struct lov_stripe_md *_lsm__ = (LSMP); \
1142 CERROR("LOV requires striping ea\n"); \
1144 } else if (_lsm__->lsm_magic != LOV_MAGIC) { \
1145 CERROR("LOV striping magic bad %#x != %#x\n", \
1146 _lsm__->lsm_magic, LOV_MAGIC); \
1152 static int lov_destroy(struct obd_export *exp, struct obdo *oa,
1153 struct lov_stripe_md *lsm, struct obd_trans_info *oti)
1156 struct lov_obd *lov;
1157 struct lov_oinfo *loi;
1161 if (lsm_bad_magic(lsm))
1164 if (!exp || !exp->exp_obd)
1167 lov = &exp->exp_obd->u.lov;
1168 loi = lsm->lsm_oinfo;
1169 for (i = 0; i < lsm->lsm_stripe_count; i++, loi++) {
1172 if (lov->tgts[loi->loi_ost_idx].active == 0) {
1173 CDEBUG(D_HA, "lov idx %d inactive\n", loi->loi_ost_idx);
1174 /* Orphan clean up will (someday) fix this up. */
1175 if (oti != NULL && oa->o_valid & OBD_MD_FLCOOKIE)
1176 oti->oti_logcookies++;
1180 memcpy(&tmp, oa, sizeof(tmp));
1181 tmp.o_id = loi->loi_id;
1182 err = obd_destroy(lov->tgts[loi->loi_ost_idx].ltd_exp, &tmp,
1184 if (err && lov->tgts[loi->loi_ost_idx].active) {
1185 CDEBUG(D_INODE, "error: destroying objid "LPX64" subobj "
1186 LPX64" on OST idx %d: rc = %d\n",
1187 oa->o_id, loi->loi_id, loi->loi_ost_idx, err);
1195 static int lov_getattr(struct obd_export *exp, struct obdo *oa,
1196 struct lov_stripe_md *lsm)
1199 struct lov_obd *lov;
1200 struct lov_oinfo *loi;
1201 int i, rc = 0, set = 0;
1204 if (lsm_bad_magic(lsm))
1207 if (!exp || !exp->exp_obd)
1210 lov = &exp->exp_obd->u.lov;
1212 CDEBUG(D_INFO, "objid "LPX64": %ux%u byte stripes\n",
1213 lsm->lsm_object_id, lsm->lsm_stripe_count, lsm->lsm_stripe_size);
1214 for (i = 0,loi = lsm->lsm_oinfo; i < lsm->lsm_stripe_count; i++,loi++) {
1217 if (lov->tgts[loi->loi_ost_idx].active == 0) {
1218 CDEBUG(D_HA, "lov idx %d inactive\n", loi->loi_ost_idx);
1222 CDEBUG(D_INFO, "objid "LPX64"[%d] has subobj "LPX64" at idx "
1223 "%u\n", oa->o_id, i, loi->loi_id, loi->loi_ost_idx);
1224 /* create data objects with "parent" OA */
1225 memcpy(&tmp, oa, sizeof(tmp));
1226 tmp.o_id = loi->loi_id;
1228 err = obd_getattr(lov->tgts[loi->loi_ost_idx].ltd_exp, &tmp,
1231 if (lov->tgts[loi->loi_ost_idx].active) {
1232 CERROR("error: getattr objid "LPX64" subobj "
1233 LPX64" on OST idx %d: rc = %d\n",
1234 oa->o_id, loi->loi_id, loi->loi_ost_idx,
1239 lov_merge_attrs(oa, &tmp, tmp.o_valid, lsm, i, &set);
1247 static int lov_getattr_interpret(struct ptlrpc_request_set *rqset, void *data,
1250 struct lov_getattr_async_args *aa = data;
1251 struct lov_stripe_md *lsm = aa->aa_lsm;
1252 struct obdo *oa = aa->aa_oa;
1253 struct obdo *obdos = aa->aa_obdos;
1254 struct lov_oinfo *loi;
1260 /* NB all stripe requests succeeded to get here */
1262 loi = lsm->lsm_oinfo;
1263 for (i = 0; i < lsm->lsm_stripe_count; i++, loi++) {
1264 if (obdos[i].o_valid == 0) /* inactive stripe */
1267 lov_merge_attrs(oa, &obdos[i], obdos[i].o_valid, lsm,
1272 CERROR ("No stripes had valid attrs\n");
1277 OBD_FREE (obdos, lsm->lsm_stripe_count * sizeof (*obdos));
1281 static int lov_getattr_async(struct obd_export *exp, struct obdo *oa,
1282 struct lov_stripe_md *lsm,
1283 struct ptlrpc_request_set *rqset)
1286 struct lov_obd *lov;
1287 struct lov_oinfo *loi;
1288 struct lov_getattr_async_args *aa;
1289 int i, rc = 0, set = 0;
1292 if (lsm_bad_magic(lsm))
1295 if (!exp || !exp->exp_obd)
1298 lov = &exp->exp_obd->u.lov;
1300 OBD_ALLOC (obdos, lsm->lsm_stripe_count * sizeof (*obdos));
1304 CDEBUG(D_INFO, "objid "LPX64": %ux%u byte stripes\n",
1305 lsm->lsm_object_id, lsm->lsm_stripe_count, lsm->lsm_stripe_size);
1306 for (i = 0,loi = lsm->lsm_oinfo; i < lsm->lsm_stripe_count; i++,loi++) {
1309 if (lov->tgts[loi->loi_ost_idx].active == 0) {
1310 CDEBUG(D_HA, "lov idx %d inactive\n", loi->loi_ost_idx);
1311 /* leaves obdos[i].obd_valid unset */
1315 CDEBUG(D_INFO, "objid "LPX64"[%d] has subobj "LPX64" at "
1316 "idx %u gen %d\n", oa->o_id, i, loi->loi_id,
1317 loi->loi_ost_idx, loi->loi_ost_gen);
1319 /* create data objects with "parent" OA */
1320 memcpy(&obdos[i], oa, sizeof(obdos[i]));
1321 obdos[i].o_id = loi->loi_id;
1323 err = obd_getattr_async(lov->tgts[loi->loi_ost_idx].ltd_exp,
1324 &obdos[i], NULL, rqset);
1326 CERROR("error: getattr objid "LPX64" subobj "
1327 LPX64" on OST idx %d: rc = %d\n",
1328 oa->o_id, loi->loi_id, loi->loi_ost_idx,
1330 GOTO(out_obdos, rc = err);
1335 GOTO (out_obdos, rc = -EIO);
1337 LASSERT (rqset->set_interpret == NULL);
1338 rqset->set_interpret = lov_getattr_interpret;
1339 LASSERT (sizeof (rqset->set_args) >= sizeof (*aa));
1340 aa = (struct lov_getattr_async_args *)&rqset->set_args;
1343 aa->aa_obdos = obdos;
1348 OBD_FREE (obdos, lsm->lsm_stripe_count * sizeof (*obdos));
1354 static int lov_setattr(struct obd_export *exp, struct obdo *src_oa,
1355 struct lov_stripe_md *lsm, struct obd_trans_info *oti)
1357 struct obdo *tmp_oa, *ret_oa;
1358 struct lov_obd *lov;
1359 struct lov_oinfo *loi;
1360 int rc = 0, i, set = 0;
1363 if (lsm_bad_magic(lsm))
1366 if (!exp || !exp->exp_obd)
1369 /* for now, we only expect time updates here */
1370 LASSERT(!(src_oa->o_valid & ~(OBD_MD_FLID|OBD_MD_FLTYPE | OBD_MD_FLMODE|
1371 OBD_MD_FLATIME | OBD_MD_FLMTIME |
1372 OBD_MD_FLCTIME | OBD_MD_FLFLAGS |
1373 OBD_MD_FLSIZE | OBD_MD_FLGROUP)));
1375 LASSERT(!(src_oa->o_valid & OBD_MD_FLGROUP) || src_oa->o_gr > 0);
1377 ret_oa = obdo_alloc();
1381 tmp_oa = obdo_alloc();
1383 GOTO(out_oa, rc = -ENOMEM);
1385 lov = &exp->exp_obd->u.lov;
1386 for (i = 0,loi = lsm->lsm_oinfo; i < lsm->lsm_stripe_count; i++,loi++) {
1389 if (lov->tgts[loi->loi_ost_idx].active == 0) {
1390 CDEBUG(D_HA, "lov idx %d inactive\n", loi->loi_ost_idx);
1394 memcpy(tmp_oa, src_oa, sizeof(*tmp_oa));
1395 tmp_oa->o_id = loi->loi_id;
1396 LASSERT(!(tmp_oa->o_valid & OBD_MD_FLGROUP) || tmp_oa->o_gr>0);
1398 if (src_oa->o_valid & OBD_MD_FLSIZE) {
1399 if (lov_stripe_offset(lsm, src_oa->o_size, i,
1400 &tmp_oa->o_size) < 0 &&
1404 CDEBUG(D_INODE, "stripe %d has size "LPU64"/"LPU64"\n",
1405 i, tmp_oa->o_size, src_oa->o_size);
1408 err = obd_setattr(lov->tgts[loi->loi_ost_idx].ltd_exp, tmp_oa,
1411 if (lov->tgts[loi->loi_ost_idx].active) {
1412 CERROR("error: setattr objid "LPX64" subobj "
1413 LPX64" on OST idx %d: rc = %d\n",
1414 src_oa->o_id, loi->loi_id,
1415 loi->loi_ost_idx, err);
1421 lov_merge_attrs(ret_oa, tmp_oa, tmp_oa->o_valid, lsm, i, &set);
1426 ret_oa->o_id = src_oa->o_id;
1427 memcpy(src_oa, ret_oa, sizeof(*src_oa));
1436 /* we have an offset in file backed by an lov and want to find out where
1437 * that offset lands in our given stripe of the file. for the easy
1438 * case where the offset is within the stripe, we just have to scale the
1439 * offset down to make it relative to the stripe instead of the lov.
1441 * the harder case is what to do when the offset doesn't intersect the
1442 * stripe. callers will want start offsets clamped ahead to the start
1443 * of the nearest stripe in the file. end offsets similarly clamped to the
1444 * nearest ending byte of a stripe in the file:
1446 * all this function does is move offsets to the nearest region of the
1447 * stripe, and it does its work "mod" the full length of all the stripes.
1448 * consider a file with 3 stripes:
1451 * ---------------------------------------------------------------------
1452 * | 0 | 1 | 2 | 0 | 1 | 2 |
1453 * ---------------------------------------------------------------------
1455 * to find stripe 1's offsets for S and E, it divides by the full stripe
1456 * width and does its math in the context of a single set of stripes:
1459 * -----------------------------------
1461 * -----------------------------------
1463 * it'll notice that E is outside stripe 1 and clamp it to the end of the
1464 * stripe, then multiply it back out by lov_off to give the real offsets in
1468 * ---------------------------------------------------------------------
1469 * | 1 | 1 | 1 | 1 | 1 | 1 |
1470 * ---------------------------------------------------------------------
1472 * it would have done similarly and pulled S forward to the start of a 1
1473 * stripe if, say, S had landed in a 0 stripe.
1475 * this rounding isn't always correct. consider an E lov offset that lands
1476 * on a 0 stripe, the "mod stripe width" math will pull it forward to the
1477 * start of a 1 stripe, when in fact it wanted to be rounded back to the end
1478 * of a previous 1 stripe. this logic is handled by callers and this is why:
1480 * this function returns < 0 when the offset was "before" the stripe and
1481 * was moved forward to the start of the stripe in question; 0 when it
1482 * falls in the stripe and no shifting was done; > 0 when the offset
1483 * was outside the stripe and was pulled back to its final byte. */
1484 static int lov_stripe_offset(struct lov_stripe_md *lsm, obd_off lov_off,
1485 int stripeno, obd_off *obd_off)
1487 unsigned long ssize = lsm->lsm_stripe_size;
1488 unsigned long swidth = ssize * lsm->lsm_stripe_count;
1489 unsigned long stripe_off, this_stripe;
1492 if (lov_off == OBD_OBJECT_EOF) {
1493 *obd_off = OBD_OBJECT_EOF;
1497 /* do_div(a, b) returns a % b, and a = a / b */
1498 stripe_off = do_div(lov_off, swidth);
1500 this_stripe = stripeno * ssize;
1501 if (stripe_off < this_stripe) {
1505 stripe_off -= this_stripe;
1507 if (stripe_off >= ssize) {
1513 *obd_off = lov_off * ssize + stripe_off;
1517 /* Given a whole-file size and a stripe number, give the file size which
1518 * corresponds to the individual object of that stripe.
1520 * This behaves basically in the same was as lov_stripe_offset, except that
1521 * file sizes falling before the beginning of a stripe are clamped to the end
1522 * of the previous stripe, not the beginning of the next:
1525 * ---------------------------------------------------------------------
1526 * | 0 | 1 | 2 | 0 | 1 | 2 |
1527 * ---------------------------------------------------------------------
1529 * if clamped to stripe 2 becomes:
1532 * ---------------------------------------------------------------------
1533 * | 0 | 1 | 2 | 0 | 1 | 2 |
1534 * ---------------------------------------------------------------------
1536 static obd_off lov_size_to_stripe(struct lov_stripe_md *lsm, obd_off file_size,
1539 unsigned long ssize = lsm->lsm_stripe_size;
1540 unsigned long swidth = ssize * lsm->lsm_stripe_count;
1541 unsigned long stripe_off, this_stripe;
1543 if (file_size == OBD_OBJECT_EOF)
1544 return OBD_OBJECT_EOF;
1546 /* do_div(a, b) returns a % b, and a = a / b */
1547 stripe_off = do_div(file_size, swidth);
1549 this_stripe = stripeno * ssize;
1550 if (stripe_off < this_stripe) {
1551 /* Move to end of previous stripe, or zero */
1552 if (file_size > 0) {
1559 stripe_off -= this_stripe;
1561 if (stripe_off >= ssize) {
1562 /* Clamp to end of this stripe */
1567 return (file_size * ssize + stripe_off);
1570 /* given an extent in an lov and a stripe, calculate the extent of the stripe
1571 * that is contained within the lov extent. this returns true if the given
1572 * stripe does intersect with the lov extent. */
1573 static int lov_stripe_intersects(struct lov_stripe_md *lsm, int stripeno,
1574 obd_off start, obd_off end,
1575 obd_off *obd_start, obd_off *obd_end)
1577 int start_side = 0, end_side = 0;
1579 switch (lsm->lsm_pattern) {
1580 case LOV_PATTERN_RAID0:
1581 start_side = lov_stripe_offset(lsm, start, stripeno, obd_start);
1582 end_side = lov_stripe_offset(lsm, end, stripeno, obd_end);
1584 case LOV_PATTERN_CMOBD:
1587 start_side = end_side = 0;
1593 CDEBUG(D_INODE, "["LPU64"->"LPU64"] -> [(%d) "LPU64"->"LPU64" (%d)]\n",
1594 start, end, start_side, *obd_start, *obd_end, end_side);
1596 /* this stripe doesn't intersect the file extent when neither
1597 * start or the end intersected the stripe and obd_start and
1598 * obd_end got rounded up to the save value. */
1599 if (start_side != 0 && end_side != 0 && *obd_start == *obd_end)
1602 /* as mentioned in the lov_stripe_offset commentary, end
1603 * might have been shifted in the wrong direction. This
1604 * happens when an end offset is before the stripe when viewed
1605 * through the "mod stripe size" math. we detect it being shifted
1606 * in the wrong direction and touch it up.
1607 * interestingly, this can't underflow since end must be > start
1608 * if we passed through the previous check.
1609 * (should we assert for that somewhere?) */
1616 /* compute which stripe number "lov_off" will be written into */
1617 static int lov_stripe_number(struct lov_stripe_md *lsm, obd_off lov_off)
1619 unsigned long ssize = lsm->lsm_stripe_size;
1620 unsigned long swidth = ssize * lsm->lsm_stripe_count;
1621 unsigned long stripe_off;
1623 if (lsm->lsm_pattern == LOV_PATTERN_CMOBD)
1626 stripe_off = do_div(lov_off, swidth);
1628 return stripe_off / ssize;
1631 static int lov_revalidate_md(struct obd_export *exp, struct obdo *src_oa,
1632 struct lov_stripe_md *ea,
1633 struct obd_trans_info *oti)
1635 struct obd_export *osc_exp;
1636 struct lov_obd *lov = &exp->exp_obd->u.lov;
1637 struct lov_stripe_md *lsm = ea;
1638 struct lov_stripe_md obj_md;
1639 struct lov_stripe_md *obj_mdp = &obj_md;
1640 struct lov_oinfo *loi;
1641 struct obdo *tmp_oa;
1642 int ost_idx, updates = 0, i;
1645 tmp_oa = obdo_alloc();
1649 loi = lsm->lsm_oinfo;
1650 for (i = 0; i < lsm->lsm_stripe_count; i++, loi++) {
1652 if (!obd_uuid_empty(&lov->tgts[loi->loi_ost_idx].uuid))
1655 ost_idx = lov_revalidate_policy(lov, lsm);
1657 /* FIXME: punt for now. */
1658 CERROR("lov_revalidate_policy failed; no active "
1663 /* create a new object */
1664 memcpy(tmp_oa, src_oa, sizeof(*tmp_oa));
1665 /* XXX: LOV STACKING: use real "obj_mdp" sub-data */
1666 osc_exp = lov->tgts[ost_idx].ltd_exp;
1667 rc = obd_create(osc_exp, tmp_oa, &obj_mdp, oti);
1669 CERROR("error creating new subobj at idx %d; "
1670 "rc = %d\n", ost_idx, rc);
1674 oti->oti_objid[ost_idx] = tmp_oa->o_id;
1675 loi->loi_id = tmp_oa->o_id;
1676 loi->loi_ost_idx = ost_idx;
1677 loi->loi_ost_gen = lov->tgts[ost_idx].ltd_gen;
1678 CDEBUG(D_INODE, "replacing objid "LPX64" subobj "LPX64
1679 " with idx %d gen %d.\n", lsm->lsm_object_id,
1680 loi->loi_id, ost_idx, loi->loi_ost_gen);
1684 /* If we got an error revalidating an entry there's no need to
1685 * cleanup up objects we allocated here because the bad entry
1686 * still points to a deleted OST. */
1692 /* FIXME: maybe we'll just make one node the authoritative attribute node, then
1693 * we can send this 'punch' to just the authoritative node and the nodes
1694 * that the punch will affect. */
1695 static int lov_punch(struct obd_export *exp, struct obdo *oa,
1696 struct lov_stripe_md *lsm,
1697 obd_off start, obd_off end, struct obd_trans_info *oti)
1700 struct lov_obd *lov;
1701 struct lov_oinfo *loi;
1705 if (lsm_bad_magic(lsm))
1708 if (!exp || !exp->exp_obd)
1711 lov = &exp->exp_obd->u.lov;
1712 for (i = 0,loi = lsm->lsm_oinfo; i < lsm->lsm_stripe_count; i++,loi++) {
1713 obd_off starti, endi;
1716 if (lov->tgts[loi->loi_ost_idx].active == 0) {
1717 CDEBUG(D_HA, "lov idx %d inactive\n", loi->loi_ost_idx);
1721 if (!lov_stripe_intersects(lsm, i, start, end, &starti, &endi))
1724 /* create data objects with "parent" OA */
1725 memcpy(&tmp, oa, sizeof(tmp));
1726 tmp.o_id = loi->loi_id;
1728 err = obd_punch(lov->tgts[loi->loi_ost_idx].ltd_exp, &tmp, NULL,
1729 starti, endi, NULL);
1731 if (lov->tgts[loi->loi_ost_idx].active) {
1732 CERROR("error: punch objid "LPX64" subobj "LPX64
1733 " on OST idx %d: rc = %d\n", oa->o_id,
1734 loi->loi_id, loi->loi_ost_idx, err);
1739 loi->loi_kms = loi->loi_rss = starti;
1745 static int lov_sync(struct obd_export *exp, struct obdo *oa,
1746 struct lov_stripe_md *lsm, obd_off start, obd_off end)
1749 struct lov_obd *lov;
1750 struct lov_oinfo *loi;
1754 if (lsm_bad_magic(lsm))
1764 lov = &exp->exp_obd->u.lov;
1765 for (i = 0,loi = lsm->lsm_oinfo; i < lsm->lsm_stripe_count; i++,loi++) {
1766 obd_off starti, endi;
1769 if (lov->tgts[loi->loi_ost_idx].active == 0) {
1770 CDEBUG(D_HA, "lov idx %d inactive\n", loi->loi_ost_idx);
1774 if (!lov_stripe_intersects(lsm, i, start, end, &starti, &endi))
1777 memcpy(tmp, oa, sizeof(*tmp));
1778 tmp->o_id = loi->loi_id;
1780 err = obd_sync(lov->tgts[loi->loi_ost_idx].ltd_exp, tmp, NULL,
1783 if (lov->tgts[loi->loi_ost_idx].active) {
1784 CERROR("error: fsync objid "LPX64" subobj "LPX64
1785 " on OST idx %d: rc = %d\n", oa->o_id,
1786 loi->loi_id, loi->loi_ost_idx, err);
1797 static int lov_brw_check(struct lov_obd *lov, struct obdo *oa,
1798 struct lov_stripe_md *lsm,
1799 obd_count oa_bufs, struct brw_page *pga)
1804 /* The caller just wants to know if there's a chance that this
1805 * I/O can succeed */
1806 for (i = 0; i < oa_bufs; i++) {
1807 int stripe = lov_stripe_number(lsm, pga[i].off);
1808 int ost = lsm->lsm_oinfo[stripe].loi_ost_idx;
1811 if (!lov_stripe_intersects(lsm, i, pga[i].off,
1812 pga[i].off + pga[i].count,
1816 if (lov->tgts[ost].active == 0) {
1817 CDEBUG(D_HA, "lov idx %d inactive\n", ost);
1820 rc = obd_brw(OBD_BRW_CHECK, lov->tgts[ost].ltd_exp, oa,
1821 NULL, 1, &pga[i], NULL);
1828 static int lov_brw(int cmd, struct obd_export *exp, struct obdo *src_oa,
1829 struct lov_stripe_md *lsm, obd_count oa_bufs,
1830 struct brw_page *pga, struct obd_trans_info *oti)
1836 struct lov_stripe_md lsm;
1838 } *stripeinfo, *si, *si_last;
1839 struct obdo *ret_oa = NULL, *tmp_oa = NULL;
1840 struct lov_obd *lov;
1841 struct brw_page *ioarr;
1842 struct lov_oinfo *loi;
1843 int rc = 0, i, *where, stripe_count = lsm->lsm_stripe_count, set = 0;
1846 if (lsm_bad_magic(lsm))
1849 lov = &exp->exp_obd->u.lov;
1851 if (cmd == OBD_BRW_CHECK) {
1852 rc = lov_brw_check(lov, src_oa, lsm, oa_bufs, pga);
1856 OBD_ALLOC(stripeinfo, stripe_count * sizeof(*stripeinfo));
1860 OBD_ALLOC(where, sizeof(*where) * oa_bufs);
1862 GOTO(out_sinfo, rc = -ENOMEM);
1864 OBD_ALLOC(ioarr, sizeof(*ioarr) * oa_bufs);
1866 GOTO(out_where, rc = -ENOMEM);
1869 ret_oa = obdo_alloc();
1871 GOTO(out_ioarr, rc = -ENOMEM);
1873 tmp_oa = obdo_alloc();
1875 GOTO(out_oa, rc = -ENOMEM);
1878 for (i = 0; i < oa_bufs; i++) {
1879 where[i] = lov_stripe_number(lsm, pga[i].off);
1880 stripeinfo[where[i]].bufct++;
1883 for (i = 0, loi = lsm->lsm_oinfo, si_last = si = stripeinfo;
1884 i < stripe_count; i++, loi++, si_last = si, si++) {
1886 si->index = si_last->index + si_last->bufct;
1887 si->lsm.lsm_object_id = loi->loi_id;
1888 si->lsm.lsm_object_gr = lsm->lsm_object_gr;
1889 si->ost_idx = loi->loi_ost_idx;
1892 for (i = 0; i < oa_bufs; i++) {
1893 int which = where[i];
1896 shift = stripeinfo[which].index + stripeinfo[which].subcount;
1897 LASSERT(shift < oa_bufs);
1898 ioarr[shift] = pga[i];
1899 lov_stripe_offset(lsm, pga[i].off, which,
1901 stripeinfo[which].subcount++;
1904 for (i = 0, si = stripeinfo; i < stripe_count; i++, si++) {
1905 int shift = si->index;
1907 if (lov->tgts[si->ost_idx].active == 0) {
1908 CDEBUG(D_HA, "lov idx %d inactive\n", si->ost_idx);
1909 GOTO(out_oa, rc = -EIO);
1913 LASSERT(shift < oa_bufs);
1915 memcpy(tmp_oa, src_oa, sizeof(*tmp_oa));
1917 tmp_oa->o_id = si->lsm.lsm_object_id;
1918 rc = obd_brw(cmd, lov->tgts[si->ost_idx].ltd_exp,
1919 tmp_oa, &si->lsm, si->bufct,
1920 &ioarr[shift], oti);
1922 GOTO(out_ioarr, rc);
1924 lov_merge_attrs(ret_oa, tmp_oa, tmp_oa->o_valid, lsm,
1929 ret_oa->o_id = src_oa->o_id;
1930 memcpy(src_oa, ret_oa, sizeof(*src_oa));
1939 OBD_FREE(ioarr, sizeof(*ioarr) * oa_bufs);
1941 OBD_FREE(where, sizeof(*where) * oa_bufs);
1943 OBD_FREE(stripeinfo, stripe_count * sizeof(*stripeinfo));
1947 static int lov_brw_interpret(struct ptlrpc_request_set *reqset, void *data,
1950 struct lov_brw_async_args *aa = data;
1951 struct lov_stripe_md *lsm = aa->aa_lsm;
1952 obd_count oa_bufs = aa->aa_oa_bufs;
1953 struct obdo *oa = aa->aa_oa;
1954 struct obdo *obdos = aa->aa_obdos;
1955 struct brw_page *ioarr = aa->aa_ioarr;
1956 struct lov_oinfo *loi;
1961 /* NB all stripe requests succeeded to get here */
1963 for (i = 0, loi = lsm->lsm_oinfo; i < lsm->lsm_stripe_count;
1965 if (obdos[i].o_valid == 0) /* inactive stripe */
1968 lov_merge_attrs(oa, &obdos[i], obdos[i].o_valid, lsm,
1973 CERROR("No stripes had valid attrs\n");
1977 oa->o_id = lsm->lsm_object_id;
1979 OBD_FREE(obdos, lsm->lsm_stripe_count * sizeof(*obdos));
1980 OBD_FREE(ioarr, sizeof(*ioarr) * oa_bufs);
1984 static int lov_brw_async(int cmd, struct obd_export *exp, struct obdo *oa,
1985 struct lov_stripe_md *lsm, obd_count oa_bufs,
1986 struct brw_page *pga, struct ptlrpc_request_set *set,
1987 struct obd_trans_info *oti)
1993 struct lov_stripe_md lsm;
1995 } *stripeinfo, *si, *si_last;
1996 struct lov_obd *lov;
1997 struct brw_page *ioarr;
1998 struct obdo *obdos = NULL;
1999 struct lov_oinfo *loi;
2000 struct lov_brw_async_args *aa;
2001 int rc = 0, i, *where, stripe_count = lsm->lsm_stripe_count;
2004 if (lsm_bad_magic(lsm))
2007 lov = &exp->exp_obd->u.lov;
2009 if (cmd == OBD_BRW_CHECK) {
2010 rc = lov_brw_check(lov, oa, lsm, oa_bufs, pga);
2014 OBD_ALLOC(stripeinfo, stripe_count * sizeof(*stripeinfo));
2018 OBD_ALLOC(where, sizeof(*where) * oa_bufs);
2020 GOTO(out_sinfo, rc = -ENOMEM);
2023 OBD_ALLOC(obdos, sizeof(*obdos) * stripe_count);
2025 GOTO(out_where, rc = -ENOMEM);
2028 OBD_ALLOC(ioarr, sizeof(*ioarr) * oa_bufs);
2030 GOTO(out_obdos, rc = -ENOMEM);
2032 for (i = 0; i < oa_bufs; i++) {
2033 where[i] = lov_stripe_number(lsm, pga[i].off);
2034 stripeinfo[where[i]].bufct++;
2037 for (i = 0, loi = lsm->lsm_oinfo, si_last = si = stripeinfo;
2038 i < stripe_count; i++, loi++, si_last = si, si++) {
2040 si->index = si_last->index + si_last->bufct;
2041 si->lsm.lsm_object_id = loi->loi_id;
2042 si->ost_idx = loi->loi_ost_idx;
2045 memcpy(&obdos[i], oa, sizeof(*obdos));
2046 obdos[i].o_id = si->lsm.lsm_object_id;
2050 for (i = 0; i < oa_bufs; i++) {
2051 int which = where[i];
2054 shift = stripeinfo[which].index + stripeinfo[which].subcount;
2055 LASSERT(shift < oa_bufs);
2056 ioarr[shift] = pga[i];
2057 lov_stripe_offset(lsm, pga[i].off, which,
2059 stripeinfo[which].subcount++;
2062 for (i = 0, si = stripeinfo; i < stripe_count; i++, si++) {
2063 int shift = si->index;
2068 if (lov->tgts[si->ost_idx].active == 0) {
2069 CDEBUG(D_HA, "lov idx %d inactive\n", si->ost_idx);
2070 GOTO(out_ioarr, rc = -EIO);
2073 LASSERT(shift < oa_bufs);
2075 rc = obd_brw_async(cmd, lov->tgts[si->ost_idx].ltd_exp,
2076 &obdos[i], &si->lsm, si->bufct,
2077 &ioarr[shift], set, oti);
2079 GOTO(out_ioarr, rc);
2082 LASSERT(set->set_interpret == NULL);
2083 set->set_interpret = (set_interpreter_func)lov_brw_interpret;
2084 LASSERT(sizeof(set->set_args) >= sizeof(struct lov_brw_async_args));
2085 aa = (struct lov_brw_async_args *)&set->set_args;
2087 aa->aa_obdos = obdos;
2089 aa->aa_ioarr = ioarr;
2090 aa->aa_oa_bufs = oa_bufs;
2092 /* Don't free ioarr or obdos - that's done in lov_brw_interpret */
2093 GOTO(out_where, rc);
2096 OBD_FREE(ioarr, sizeof(*ioarr) * oa_bufs);
2098 OBD_FREE(obdos, stripe_count * sizeof(*obdos));
2100 OBD_FREE(where, sizeof(*where) * oa_bufs);
2102 OBD_FREE(stripeinfo, stripe_count * sizeof(*stripeinfo));
2106 struct lov_async_page *lap_from_cookie(void *cookie)
2108 struct lov_async_page *lap = cookie;
2109 if (lap->lap_magic != LAP_MAGIC)
2110 return ERR_PTR(-EINVAL);
2114 static int lov_ap_make_ready(void *data, int cmd)
2116 struct lov_async_page *lap = lap_from_cookie(data);
2117 /* XXX should these assert? */
2121 return lap->lap_caller_ops->ap_make_ready(lap->lap_caller_data, cmd);
2123 static int lov_ap_refresh_count(void *data, int cmd)
2125 struct lov_async_page *lap = lap_from_cookie(data);
2129 return lap->lap_caller_ops->ap_refresh_count(lap->lap_caller_data,
2132 static void lov_ap_fill_obdo(void *data, int cmd, struct obdo *oa)
2134 struct lov_async_page *lap = lap_from_cookie(data);
2135 /* XXX should these assert? */
2139 lap->lap_caller_ops->ap_fill_obdo(lap->lap_caller_data, cmd, oa);
2140 /* XXX woah, shouldn't we be altering more here? size? */
2141 oa->o_id = lap->lap_loi_id;
2144 static void lov_ap_completion(void *data, int cmd, struct obdo *oa, int rc)
2146 struct lov_async_page *lap = lap_from_cookie(data);
2150 /* in a raid1 regime this would down a count of many ios
2151 * in flight, onl calling the caller_ops completion when all
2152 * the raid1 ios are complete */
2153 lap->lap_caller_ops->ap_completion(lap->lap_caller_data, cmd, oa, rc);
2156 static struct obd_async_page_ops lov_async_page_ops = {
2157 .ap_make_ready = lov_ap_make_ready,
2158 .ap_refresh_count = lov_ap_refresh_count,
2159 .ap_fill_obdo = lov_ap_fill_obdo,
2160 .ap_completion = lov_ap_completion,
2163 static int lov_prep_async_page(struct obd_export *exp,
2164 struct lov_stripe_md *lsm,
2165 struct lov_oinfo *loi, struct page *page,
2166 obd_off offset, struct obd_async_page_ops *ops,
2167 void *data, void **res)
2169 struct lov_obd *lov = &exp->exp_obd->u.lov;
2170 struct lov_async_page *lap;
2174 if (lsm_bad_magic(lsm))
2176 LASSERT(loi == NULL);
2178 stripe = lov_stripe_number(lsm, offset);
2179 loi = &lsm->lsm_oinfo[stripe];
2181 if (obd_uuid_empty(&lov->tgts[loi->loi_ost_idx].uuid))
2183 if (lov->tgts[loi->loi_ost_idx].active == 0)
2185 if (lov->tgts[loi->loi_ost_idx].ltd_exp == NULL) {
2186 CERROR("ltd_exp == NULL, but OST idx %d doesn't appear to be "
2187 "deleted or inactive.\n", loi->loi_ost_idx);
2191 OBD_ALLOC(lap, sizeof(*lap));
2195 lap->lap_magic = LAP_MAGIC;
2196 lap->lap_caller_ops = ops;
2197 lap->lap_caller_data = data;
2199 /* FIXME handle multiple oscs after landing b_raid1 */
2200 lap->lap_stripe = stripe;
2201 switch (lsm->lsm_pattern) {
2202 case LOV_PATTERN_RAID0:
2203 lov_stripe_offset(lsm, offset, lap->lap_stripe,
2204 &lap->lap_sub_offset);
2206 case LOV_PATTERN_CMOBD:
2207 lap->lap_sub_offset = offset;
2213 /* so the callback doesn't need the lsm */
2214 lap->lap_loi_id = loi->loi_id;
2216 rc = obd_prep_async_page(lov->tgts[loi->loi_ost_idx].ltd_exp,
2217 lsm, loi, page, lap->lap_sub_offset,
2218 &lov_async_page_ops, lap,
2219 &lap->lap_sub_cookie);
2221 OBD_FREE(lap, sizeof(*lap));
2224 CDEBUG(D_CACHE, "lap %p page %p cookie %p off "LPU64"\n", lap, page,
2225 lap->lap_sub_cookie, offset);
2230 static int lov_queue_async_io(struct obd_export *exp,
2231 struct lov_stripe_md *lsm,
2232 struct lov_oinfo *loi, void *cookie,
2233 int cmd, obd_off off, int count,
2234 obd_flag brw_flags, obd_flag async_flags)
2236 struct lov_obd *lov = &exp->exp_obd->u.lov;
2237 struct lov_async_page *lap;
2240 LASSERT(loi == NULL);
2242 if (lsm_bad_magic(lsm))
2245 lap = lap_from_cookie(cookie);
2247 RETURN(PTR_ERR(lap));
2249 loi = &lsm->lsm_oinfo[lap->lap_stripe];
2251 rc = obd_queue_async_io(lov->tgts[loi->loi_ost_idx].ltd_exp, lsm,
2252 loi, lap->lap_sub_cookie, cmd, off, count,
2253 brw_flags, async_flags);
2257 static int lov_set_async_flags(struct obd_export *exp,
2258 struct lov_stripe_md *lsm,
2259 struct lov_oinfo *loi, void *cookie,
2260 obd_flag async_flags)
2262 struct lov_obd *lov = &exp->exp_obd->u.lov;
2263 struct lov_async_page *lap;
2266 LASSERT(loi == NULL);
2268 if (lsm_bad_magic(lsm))
2271 lap = lap_from_cookie(cookie);
2273 RETURN(PTR_ERR(lap));
2275 loi = &lsm->lsm_oinfo[lap->lap_stripe];
2277 rc = obd_set_async_flags(lov->tgts[loi->loi_ost_idx].ltd_exp,
2278 lsm, loi, lap->lap_sub_cookie, async_flags);
2282 static int lov_queue_group_io(struct obd_export *exp,
2283 struct lov_stripe_md *lsm,
2284 struct lov_oinfo *loi,
2285 struct obd_io_group *oig, void *cookie,
2286 int cmd, obd_off off, int count,
2287 obd_flag brw_flags, obd_flag async_flags)
2289 struct lov_obd *lov = &exp->exp_obd->u.lov;
2290 struct lov_async_page *lap;
2293 LASSERT(loi == NULL);
2295 if (lsm_bad_magic(lsm))
2298 lap = lap_from_cookie(cookie);
2300 RETURN(PTR_ERR(lap));
2302 loi = &lsm->lsm_oinfo[lap->lap_stripe];
2304 rc = obd_queue_group_io(lov->tgts[loi->loi_ost_idx].ltd_exp, lsm, loi,
2305 oig, lap->lap_sub_cookie, cmd, off, count,
2306 brw_flags, async_flags);
2310 /* this isn't exactly optimal. we may have queued sync io in oscs on
2311 * all stripes, but we don't record that fact at queue time. so we
2312 * trigger sync io on all stripes. */
2313 static int lov_trigger_group_io(struct obd_export *exp,
2314 struct lov_stripe_md *lsm,
2315 struct lov_oinfo *loi,
2316 struct obd_io_group *oig)
2318 struct lov_obd *lov = &exp->exp_obd->u.lov;
2321 LASSERT(loi == NULL);
2323 if (lsm_bad_magic(lsm))
2326 loi = lsm->lsm_oinfo;
2327 for (i = 0; i < lsm->lsm_stripe_count; i++, loi++) {
2328 if (lov->tgts[loi->loi_ost_idx].active == 0) {
2329 CDEBUG(D_HA, "lov idx %d inactive\n", loi->loi_ost_idx);
2333 err = obd_trigger_group_io(lov->tgts[loi->loi_ost_idx].ltd_exp,
2335 if (rc == 0 && err != 0)
2341 static int lov_teardown_async_page(struct obd_export *exp,
2342 struct lov_stripe_md *lsm,
2343 struct lov_oinfo *loi, void *cookie)
2345 struct lov_obd *lov = &exp->exp_obd->u.lov;
2346 struct lov_async_page *lap;
2349 LASSERT(loi == NULL);
2351 if (lsm_bad_magic(lsm))
2354 lap = lap_from_cookie(cookie);
2356 RETURN(PTR_ERR(lap));
2358 loi = &lsm->lsm_oinfo[lap->lap_stripe];
2360 rc = obd_teardown_async_page(lov->tgts[loi->loi_ost_idx].ltd_exp,
2361 lsm, loi, lap->lap_sub_cookie);
2363 CERROR("unable to teardown sub cookie %p: %d\n",
2364 lap->lap_sub_cookie, rc);
2367 OBD_FREE(lap, sizeof(*lap));
2371 static int lov_enqueue(struct obd_export *exp, struct lov_stripe_md *lsm,
2372 __u32 type, ldlm_policy_data_t *policy, __u32 mode,
2373 int *flags, void *bl_cb, void *cp_cb, void *gl_cb,
2374 void *data,__u32 lvb_len, void *lvb_swabber,
2375 struct lustre_handle *lockh)
2377 struct lov_lock_handles *lov_lockh = NULL;
2378 struct lustre_handle *lov_lockhp;
2379 struct lov_obd *lov;
2380 struct lov_oinfo *loi;
2381 char submd_buf[sizeof(struct lov_stripe_md) + sizeof(struct lov_oinfo)];
2382 struct lov_stripe_md *submd = (void *)submd_buf;
2384 int i, save_flags = *flags;
2387 if (lsm_bad_magic(lsm))
2390 /* we should never be asked to replay a lock this way. */
2391 LASSERT((*flags & LDLM_FL_REPLAY) == 0);
2393 if (!exp || !exp->exp_obd)
2396 if (lsm->lsm_stripe_count > 1) {
2397 lov_lockh = lov_llh_new(lsm);
2398 if (lov_lockh == NULL)
2401 lockh->cookie = lov_lockh->llh_handle.h_cookie;
2402 lov_lockhp = lov_lockh->llh_handles;
2407 lov = &exp->exp_obd->u.lov;
2408 for (i = 0, loi = lsm->lsm_oinfo; i < lsm->lsm_stripe_count;
2409 i++, loi++, lov_lockhp++) {
2410 ldlm_policy_data_t sub_ext;
2413 if (!lov_stripe_intersects(lsm, i, policy->l_extent.start,
2414 policy->l_extent.end, &start,
2418 sub_ext.l_extent.start = start;
2419 sub_ext.l_extent.end = end;
2420 sub_ext.l_extent.gid = policy->l_extent.gid;
2422 if (lov->tgts[loi->loi_ost_idx].active == 0) {
2423 CDEBUG(D_HA, "lov idx %d inactive\n", loi->loi_ost_idx);
2427 /* XXX LOV STACKING: submd should be from the subobj */
2428 submd->lsm_object_id = loi->loi_id;
2429 submd->lsm_object_gr = lsm->lsm_object_gr;
2430 submd->lsm_stripe_count = 0;
2431 submd->lsm_oinfo->loi_kms_valid = loi->loi_kms_valid;
2432 submd->lsm_oinfo->loi_rss = loi->loi_rss;
2433 submd->lsm_oinfo->loi_kms = loi->loi_kms;
2434 submd->lsm_oinfo->loi_blocks = loi->loi_blocks;
2435 loi->loi_mtime = submd->lsm_oinfo->loi_mtime;
2436 /* XXX submd is not fully initialized here */
2437 *flags = save_flags;
2438 rc = obd_enqueue(lov->tgts[loi->loi_ost_idx].ltd_exp, submd,
2439 type, &sub_ext, mode, flags, bl_cb, cp_cb,
2440 gl_cb, data, lvb_len, lvb_swabber, lov_lockhp);
2442 /* XXX FIXME: This unpleasantness doesn't belong here at *all*.
2443 * It belongs in the OSC, except that the OSC doesn't have
2444 * access to the real LOI -- it gets a copy, that we created
2445 * above, and that copy can be arbitrarily out of date.
2447 * The LOV API is due for a serious rewriting anyways, and this
2448 * can be addressed then. */
2449 if (rc == ELDLM_OK) {
2450 struct ldlm_lock *lock = ldlm_handle2lock(lov_lockhp);
2451 __u64 tmp = submd->lsm_oinfo->loi_rss;
2453 LASSERT(lock != NULL);
2455 loi->loi_blocks = submd->lsm_oinfo->loi_blocks;
2456 /* Extend KMS up to the end of this lock and no further
2457 * A lock on [x,y] means a KMS of up to y + 1 bytes! */
2458 if (tmp > lock->l_policy_data.l_extent.end)
2459 tmp = lock->l_policy_data.l_extent.end + 1;
2460 if (tmp >= loi->loi_kms) {
2461 CDEBUG(D_INODE, "lock acquired, setting rss="
2462 LPU64", kms="LPU64"\n", loi->loi_rss,
2465 loi->loi_kms_valid = 1;
2467 CDEBUG(D_INODE, "lock acquired, setting rss="
2468 LPU64"; leaving kms="LPU64", end="LPU64
2469 "\n", loi->loi_rss, loi->loi_kms,
2470 lock->l_policy_data.l_extent.end);
2472 ldlm_lock_allow_match(lock);
2473 LDLM_LOCK_PUT(lock);
2474 } else if (rc == ELDLM_LOCK_ABORTED &&
2475 save_flags & LDLM_FL_HAS_INTENT) {
2476 memset(lov_lockhp, 0, sizeof(*lov_lockhp));
2477 loi->loi_rss = submd->lsm_oinfo->loi_rss;
2478 loi->loi_blocks = submd->lsm_oinfo->loi_blocks;
2479 CDEBUG(D_INODE, "glimpsed, setting rss="LPU64"; leaving"
2480 " kms="LPU64"\n", loi->loi_rss, loi->loi_kms);
2482 memset(lov_lockhp, 0, sizeof(*lov_lockhp));
2483 if (lov->tgts[loi->loi_ost_idx].active) {
2484 CERROR("error: enqueue objid "LPX64" subobj "
2485 LPX64" on OST idx %d: rc = %d\n",
2486 lsm->lsm_object_id, loi->loi_id,
2487 loi->loi_ost_idx, rc);
2488 GOTO(out_locks, rc);
2492 if (lsm->lsm_stripe_count > 1)
2493 lov_llh_put(lov_lockh);
2497 while (loi--, lov_lockhp--, i-- > 0) {
2498 struct lov_stripe_md submd;
2501 if (lov_lockhp->cookie == 0)
2504 /* XXX LOV STACKING: submd should be from the subobj */
2505 submd.lsm_object_id = loi->loi_id;
2506 submd.lsm_object_gr = lsm->lsm_object_gr;
2507 submd.lsm_stripe_count = 0;
2508 err = obd_cancel(lov->tgts[loi->loi_ost_idx].ltd_exp, &submd,
2510 if (err && lov->tgts[loi->loi_ost_idx].active) {
2511 CERROR("error: cancelling objid "LPX64" on OST "
2512 "idx %d after enqueue error: rc = %d\n",
2513 loi->loi_id, loi->loi_ost_idx, err);
2517 if (lsm->lsm_stripe_count > 1) {
2518 lov_llh_destroy(lov_lockh);
2519 lov_llh_put(lov_lockh);
2524 static int lov_match(struct obd_export *exp, struct lov_stripe_md *lsm,
2525 __u32 type, ldlm_policy_data_t *policy, __u32 mode,
2526 int *flags, void *data, struct lustre_handle *lockh)
2528 struct lov_lock_handles *lov_lockh = NULL;
2529 struct lustre_handle *lov_lockhp;
2530 struct lov_obd *lov;
2531 struct lov_oinfo *loi;
2532 struct lov_stripe_md submd;
2533 ldlm_error_t rc = 0;
2537 if (lsm_bad_magic(lsm))
2540 if (!exp || !exp->exp_obd)
2543 if (lsm->lsm_stripe_count > 1) {
2544 lov_lockh = lov_llh_new(lsm);
2545 if (lov_lockh == NULL)
2548 lockh->cookie = lov_lockh->llh_handle.h_cookie;
2549 lov_lockhp = lov_lockh->llh_handles;
2554 lov = &exp->exp_obd->u.lov;
2555 for (i = 0, loi = lsm->lsm_oinfo; i < lsm->lsm_stripe_count;
2556 i++, loi++, lov_lockhp++) {
2557 ldlm_policy_data_t sub_ext;
2561 if (!lov_stripe_intersects(lsm, i, policy->l_extent.start,
2562 policy->l_extent.end, &start, &end))
2565 sub_ext.l_extent.start = start;
2566 sub_ext.l_extent.end = end;
2568 if (obd_uuid_empty(&lov->tgts[loi->loi_ost_idx].uuid)) {
2569 CDEBUG(D_HA, "lov idx %d deleted\n", loi->loi_ost_idx);
2572 if (lov->tgts[loi->loi_ost_idx].active == 0) {
2573 CDEBUG(D_HA, "lov idx %d inactive\n", loi->loi_ost_idx);
2578 /* XXX LOV STACKING: submd should be from the subobj */
2579 submd.lsm_object_id = loi->loi_id;
2580 submd.lsm_object_gr = lsm->lsm_object_gr;
2581 submd.lsm_stripe_count = 0;
2583 /* XXX submd is not fully initialized here */
2584 rc = obd_match(lov->tgts[loi->loi_ost_idx].ltd_exp, &submd,
2585 type, &sub_ext, mode, &lov_flags, data,
2591 if (lsm->lsm_stripe_count > 1) {
2592 if (*flags & LDLM_FL_TEST_LOCK)
2593 lov_llh_destroy(lov_lockh);
2594 lov_llh_put(lov_lockh);
2599 while (loi--, lov_lockhp--, i-- > 0) {
2600 struct lov_stripe_md submd;
2603 if (lov_lockhp->cookie == 0)
2606 /* XXX LOV STACKING: submd should be from the subobj */
2607 submd.lsm_object_id = loi->loi_id;
2608 submd.lsm_object_gr = lsm->lsm_object_gr;
2609 submd.lsm_stripe_count = 0;
2610 err = obd_cancel(lov->tgts[loi->loi_ost_idx].ltd_exp, &submd,
2612 if (err && lov->tgts[loi->loi_ost_idx].active) {
2613 CERROR("error: cancelling objid "LPX64" on OST "
2614 "idx %d after match failure: rc = %d\n",
2615 loi->loi_id, loi->loi_ost_idx, err);
2619 if (lsm->lsm_stripe_count > 1) {
2620 lov_llh_destroy(lov_lockh);
2621 lov_llh_put(lov_lockh);
2626 static int lov_change_cbdata(struct obd_export *exp,
2627 struct lov_stripe_md *lsm, ldlm_iterator_t it,
2630 struct lov_obd *lov;
2631 struct lov_oinfo *loi;
2635 if (lsm_bad_magic(lsm))
2638 if (!exp || !exp->exp_obd)
2641 LASSERT(lsm->lsm_object_gr > 0);
2643 lov = &exp->exp_obd->u.lov;
2644 for (i = 0,loi = lsm->lsm_oinfo; i < lsm->lsm_stripe_count; i++,loi++) {
2645 struct lov_stripe_md submd;
2646 if (lov->tgts[loi->loi_ost_idx].active == 0) {
2647 CDEBUG(D_HA, "lov idx %d inactive\n", loi->loi_ost_idx);
2651 submd.lsm_object_id = loi->loi_id;
2652 submd.lsm_object_gr = lsm->lsm_object_gr;
2653 submd.lsm_stripe_count = 0;
2654 rc = obd_change_cbdata(lov->tgts[loi->loi_ost_idx].ltd_exp,
2660 static int lov_cancel(struct obd_export *exp, struct lov_stripe_md *lsm,
2661 __u32 mode, struct lustre_handle *lockh)
2663 struct lov_lock_handles *lov_lockh = NULL;
2664 struct lustre_handle *lov_lockhp;
2665 struct lov_obd *lov;
2666 struct lov_oinfo *loi;
2670 if (lsm_bad_magic(lsm))
2673 if (!exp || !exp->exp_obd)
2676 LASSERT(lsm->lsm_object_gr > 0);
2679 if (lsm->lsm_stripe_count > 1) {
2680 lov_lockh = lov_handle2llh(lockh);
2682 CERROR("LOV: invalid lov lock handle %p\n", lockh);
2686 lov_lockhp = lov_lockh->llh_handles;
2691 lov = &exp->exp_obd->u.lov;
2692 for (i = 0, loi = lsm->lsm_oinfo; i < lsm->lsm_stripe_count;
2693 i++, loi++, lov_lockhp++) {
2694 struct lov_stripe_md submd;
2697 if (lov_lockhp->cookie == 0) {
2698 CDEBUG(D_HA, "lov idx %d subobj "LPX64" no lock?\n",
2699 loi->loi_ost_idx, loi->loi_id);
2703 /* XXX LOV STACKING: submd should be from the subobj */
2704 submd.lsm_object_id = loi->loi_id;
2705 submd.lsm_object_gr = lsm->lsm_object_gr;
2706 submd.lsm_stripe_count = 0;
2707 err = obd_cancel(lov->tgts[loi->loi_ost_idx].ltd_exp, &submd,
2710 if (lov->tgts[loi->loi_ost_idx].active) {
2711 CERROR("error: cancel objid "LPX64" subobj "
2712 LPX64" on OST idx %d: rc = %d\n",
2714 loi->loi_id, loi->loi_ost_idx, err);
2721 if (lsm->lsm_stripe_count > 1)
2722 lov_llh_destroy(lov_lockh);
2723 if (lov_lockh != NULL)
2724 lov_llh_put(lov_lockh);
2728 static int lov_cancel_unused(struct obd_export *exp,
2729 struct lov_stripe_md *lsm, int flags, void *opaque)
2731 struct lov_obd *lov;
2732 struct lov_oinfo *loi;
2736 lov = &exp->exp_obd->u.lov;
2738 for (i = 0; i < lov->desc.ld_tgt_count; i++) {
2739 int err = obd_cancel_unused(lov->tgts[i].ltd_exp, NULL,
2747 if (lsm_bad_magic(lsm))
2750 if (!exp || !exp->exp_obd)
2753 LASSERT(lsm->lsm_object_gr > 0);
2755 for (i = 0,loi = lsm->lsm_oinfo; i < lsm->lsm_stripe_count; i++,loi++) {
2756 struct lov_stripe_md submd;
2759 if (lov->tgts[loi->loi_ost_idx].active == 0)
2760 CDEBUG(D_HA, "lov idx %d inactive\n", loi->loi_ost_idx);
2762 submd.lsm_object_id = loi->loi_id;
2763 submd.lsm_object_gr = lsm->lsm_object_gr;
2764 submd.lsm_stripe_count = 0;
2765 err = obd_cancel_unused(lov->tgts[loi->loi_ost_idx].ltd_exp,
2766 &submd, flags, opaque);
2767 if (err && lov->tgts[loi->loi_ost_idx].active) {
2768 CERROR("error: cancel unused objid "LPX64" subobj "LPX64
2769 " on OST idx %d: rc = %d\n", lsm->lsm_object_id,
2770 loi->loi_id, loi->loi_ost_idx, err);
2778 #define LOV_U64_MAX ((__u64)~0ULL)
2779 #define LOV_SUM_MAX(tot, add) \
2781 if ((tot) + (add) < (tot)) \
2782 (tot) = LOV_U64_MAX; \
2787 static int lov_statfs(struct obd_device *obd, struct obd_statfs *osfs,
2788 unsigned long max_age)
2790 struct lov_obd *lov = &obd->u.lov;
2791 struct obd_statfs lov_sfs;
2798 /* We only get block data from the OBD */
2799 for (i = 0; i < lov->desc.ld_tgt_count; i++) {
2801 if (!lov->tgts[i].active) {
2802 CDEBUG(D_HA, "lov idx %d inactive\n", i);
2806 err = obd_statfs(class_exp2obd(lov->tgts[i].ltd_exp), &lov_sfs,
2809 if (lov->tgts[i].active && !rc)
2815 memcpy(osfs, &lov_sfs, sizeof(lov_sfs));
2818 osfs->os_bfree += lov_sfs.os_bfree;
2819 osfs->os_bavail += lov_sfs.os_bavail;
2820 osfs->os_blocks += lov_sfs.os_blocks;
2821 /* XXX not sure about this one - depends on policy.
2822 * - could be minimum if we always stripe on all OBDs
2823 * (but that would be wrong for any other policy,
2824 * if one of the OBDs has no more objects left)
2825 * - could be sum if we stripe whole objects
2826 * - could be average, just to give a nice number
2828 * To give a "reasonable" (if not wholly accurate)
2829 * number, we divide the total number of free objects
2830 * by expected stripe count (watch out for overflow).
2832 LOV_SUM_MAX(osfs->os_files, lov_sfs.os_files);
2833 LOV_SUM_MAX(osfs->os_ffree, lov_sfs.os_ffree);
2838 __u32 expected_stripes = lov->desc.ld_default_stripe_count ?
2839 lov->desc.ld_default_stripe_count :
2840 lov->desc.ld_active_tgt_count;
2842 if (osfs->os_files != LOV_U64_MAX)
2843 do_div(osfs->os_files, expected_stripes);
2844 if (osfs->os_ffree != LOV_U64_MAX)
2845 do_div(osfs->os_ffree, expected_stripes);
2852 static int lov_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
2853 void *karg, void *uarg)
2855 struct obd_device *obddev = class_exp2obd(exp);
2856 struct lov_obd *lov = &obddev->u.lov;
2857 int i, rc, count = lov->desc.ld_tgt_count;
2858 struct obd_uuid *uuidp;
2862 case OBD_IOC_LOV_GET_CONFIG: {
2863 struct obd_ioctl_data *data = karg;
2864 struct lov_tgt_desc *tgtdesc;
2865 struct lov_desc *desc;
2871 if (obd_ioctl_getdata(&buf, &len, (void *)uarg))
2874 data = (struct obd_ioctl_data *)buf;
2876 if (sizeof(*desc) > data->ioc_inllen1) {
2877 obd_ioctl_freedata(buf, len);
2881 if (sizeof(uuidp->uuid) * count > data->ioc_inllen2) {
2882 obd_ioctl_freedata(buf, len);
2886 if (sizeof(__u32) * count > data->ioc_inllen3) {
2887 obd_ioctl_freedata(buf, len);
2891 desc = (struct lov_desc *)data->ioc_inlbuf1;
2892 memcpy(desc, &(lov->desc), sizeof(*desc));
2894 uuidp = (struct obd_uuid *)data->ioc_inlbuf2;
2895 genp = (__u32 *)data->ioc_inlbuf3;
2896 tgtdesc = lov->tgts;
2897 /* the uuid will be empty for deleted OSTs */
2898 for (i = 0; i < count; i++, uuidp++, genp++, tgtdesc++) {
2899 obd_str2uuid(uuidp, tgtdesc->uuid.uuid);
2900 *genp = tgtdesc->ltd_gen;
2903 rc = copy_to_user((void *)uarg, buf, len);
2906 obd_ioctl_freedata(buf, len);
2909 case LL_IOC_LOV_SETSTRIPE:
2910 rc = lov_setstripe(exp, karg, uarg);
2912 case LL_IOC_LOV_GETSTRIPE:
2913 rc = lov_getstripe(exp, karg, uarg);
2915 case LL_IOC_LOV_SETEA:
2916 rc = lov_setea(exp, karg, uarg);
2923 for (i = 0; i < count; i++) {
2926 /* OST was deleted */
2927 if (obd_uuid_empty(&lov->tgts[i].uuid))
2930 err = obd_iocontrol(cmd, lov->tgts[i].ltd_exp,
2933 if (lov->tgts[i].active) {
2934 CERROR("error: iocontrol OSC %s on OST"
2935 "idx %d: err = %d\n",
2936 lov->tgts[i].uuid.uuid, i, err);
2951 static int lov_get_info(struct obd_export *exp, __u32 keylen,
2952 void *key, __u32 *vallen, void *val)
2954 struct obd_device *obddev = class_exp2obd(exp);
2955 struct lov_obd *lov = &obddev->u.lov;
2959 if (!vallen || !val)
2962 if (keylen > strlen("lock_to_stripe") &&
2963 strcmp(key, "lock_to_stripe") == 0) {
2966 struct ldlm_lock *lock;
2967 struct lov_stripe_md *lsm;
2969 struct lov_oinfo *loi;
2970 struct ldlm_res_id *res_id = &data->lock->l_resource->lr_name;
2971 __u32 *stripe = val;
2973 if (*vallen < sizeof(*stripe))
2975 *vallen = sizeof(*stripe);
2977 /* XXX This is another one of those bits that will need to
2978 * change if we ever actually support nested LOVs. It uses
2979 * the lock's export to find out which stripe it is. */
2980 /* XXX - it's assumed all the locks for deleted OSTs have
2981 * been cancelled. Also, the export for deleted OSTs will
2982 * be NULL and won't match the lock's export. */
2983 for (i = 0, loi = data->lsm->lsm_oinfo;
2984 i < data->lsm->lsm_stripe_count;
2986 if (lov->tgts[loi->loi_ost_idx].ltd_exp ==
2987 data->lock->l_conn_export &&
2988 loi->loi_id == res_id->name[0] &&
2989 loi->loi_gr == res_id->name[2]) {
2994 LDLM_ERROR(data->lock, "lock on inode without such object\n");
2995 dump_lsm(D_ERROR, data->lsm);
2997 } else if (keylen >= strlen("size_to_stripe") &&
2998 strcmp(key, "size_to_stripe") == 0) {
3002 struct lov_stripe_md *lsm;
3005 if (*vallen < sizeof(*data))
3008 data->size = lov_size_to_stripe(data->lsm, data->size,
3009 data->stripe_number);
3011 } else if (keylen >= strlen("last_id") && strcmp(key, "last_id") == 0) {
3013 int rc, size = sizeof(obd_id);
3014 for (i = 0; i < lov->desc.ld_tgt_count; i++) {
3015 if (!lov->tgts[i].active)
3017 rc = obd_get_info(lov->tgts[i].ltd_exp, keylen, key,
3023 } else if (keylen >= strlen("lovdesc") && strcmp(key, "lovdesc") == 0) {
3024 struct lov_desc *desc_ret = val;
3025 *desc_ret = lov->desc;
3033 static int lov_set_info(struct obd_export *exp, obd_count keylen,
3034 void *key, obd_count vallen, void *val)
3036 struct obd_device *obddev = class_exp2obd(exp);
3037 struct lov_obd *lov = &obddev->u.lov;
3041 #define KEY_IS(str) \
3042 (keylen == strlen(str) && memcmp(key, str, keylen) == 0)
3044 if (KEY_IS("next_id")) {
3045 if (vallen != lov->desc.ld_tgt_count)
3047 for (i = 0; i < lov->desc.ld_tgt_count; i++) {
3050 /* OST was deleted */
3051 if (obd_uuid_empty(&lov->tgts[i].uuid))
3054 /* initialize all OSCs, even inactive ones */
3056 er = obd_set_info(lov->tgts[i].ltd_exp, keylen, key,
3057 sizeof(obd_id), ((obd_id*)val) + i);
3063 if (KEY_IS("growth_count")) {
3064 if (vallen != sizeof(int))
3066 } else if (KEY_IS("mds_conn")) {
3067 if (vallen != sizeof(__u32))
3069 } else if (KEY_IS("unlinked") || KEY_IS("unrecovery")) {
3076 for (i = 0; i < lov->desc.ld_tgt_count; i++) {
3079 /* OST was deleted */
3080 if (obd_uuid_empty(&lov->tgts[i].uuid))
3083 if (!val && !lov->tgts[i].active)
3086 er = obd_set_info(lov->tgts[i].ltd_exp, keylen, key, vallen,
3096 /* Merge rss if kms == 0
3098 * Even when merging RSS, we will take the KMS value if it's larger.
3099 * This prevents getattr from stomping on dirty cached pages which
3100 * extend the file size. */
3101 __u64 lov_merge_size(struct lov_stripe_md *lsm, int kms)
3103 struct lov_oinfo *loi;
3107 for (i = 0, loi = lsm->lsm_oinfo; i < lsm->lsm_stripe_count;
3109 obd_size lov_size, tmpsize;
3111 tmpsize = loi->loi_kms;
3112 if (kms == 0 && loi->loi_rss > tmpsize)
3113 tmpsize = loi->loi_rss;
3115 lov_size = lov_stripe_size(lsm, tmpsize, i);
3116 if (lov_size > size)
3122 EXPORT_SYMBOL(lov_merge_size);
3125 __u64 lov_merge_blocks(struct lov_stripe_md *lsm)
3127 struct lov_oinfo *loi;
3131 for (i = 0, loi = lsm->lsm_oinfo; i < lsm->lsm_stripe_count;
3133 blocks += loi->loi_blocks;
3137 EXPORT_SYMBOL(lov_merge_blocks);
3139 __u64 lov_merge_mtime(struct lov_stripe_md *lsm, __u64 current_time)
3141 struct lov_oinfo *loi;
3144 for (i = 0, loi = lsm->lsm_oinfo; i < lsm->lsm_stripe_count;
3146 if (loi->loi_mtime > current_time)
3147 current_time = loi->loi_mtime;
3149 return current_time;
3151 EXPORT_SYMBOL(lov_merge_mtime);
3154 struct lov_multi_wait {
3155 struct ldlm_lock *lock;
3161 int lov_complete_many(struct obd_export *exp, struct lov_stripe_md *lsm,
3162 struct lustre_handle *lockh)
3164 struct lov_lock_handles *lov_lockh = NULL;
3165 struct lustre_handle *lov_lockhp;
3166 struct lov_obd *lov;
3167 struct lov_oinfo *loi;
3168 struct lov_multi_wait *queues;
3172 if (lsm_bad_magic(lsm))
3175 if (!exp || !exp->exp_obd)
3178 LASSERT(lockh != NULL);
3179 if (lsm->lsm_stripe_count > 1) {
3180 lov_lockh = lov_handle2llh(lockh);
3181 if (lov_lockh == NULL) {
3182 CERROR("LOV: invalid lov lock handle %p\n", lockh);
3186 lov_lockhp = lov_lockh->llh_handles;
3191 OBD_ALLOC(queues, lsm->lsm_stripe_count * sizeof(*queues));
3193 GOTO(out, rc = -ENOMEM);
3195 lov = &exp->exp_obd->u.lov;
3196 for (i = 0, loi = lsm->lsm_oinfo; i < lsm->lsm_stripe_count;
3197 i++, loi++, lov_lockhp++) {
3198 struct ldlm_lock *lock;
3199 struct obd_device *obd;
3200 unsigned long irqflags;
3202 lock = ldlm_handle2lock(lov_lockhp);
3204 CDEBUG(D_HA, "lov idx %d subobj "LPX64" no lock?\n",
3205 loi->loi_ost_idx, loi->loi_id);
3206 queues[i].completed = 1;
3210 queues[i].lock = lock;
3211 init_waitqueue_entry(&(queues[i].wait), current);
3212 add_wait_queue(lock->l_waitq, &(queues[i].wait));
3214 obd = class_exp2obd(lock->l_conn_export);
3216 imp = obd->u.cli.cl_import;
3218 spin_lock_irqsave(&imp->imp_lock, irqflags);
3219 queues[i].generation = imp->imp_generation;
3220 spin_unlock_irqrestore(&imp->imp_lock, irqflags);
3224 lwi = LWI_TIMEOUT_INTR(obd_timeout * HZ, ldlm_expired_completion_wait,
3225 interrupted_completion_wait, &lwd);
3226 rc = l_wait_event_added(check_multi_complete(queues, lsm), &lwi);
3228 for (i = 0; i < lsm->lsm_stripe_count; i++)
3229 remove_wait_queue(lock->l_waitq, &(queues[i].wait));
3231 if (rc == -EINTR || rc == -ETIMEDOUT) {
3237 if (lov_lockh != NULL)
3238 lov_llh_put(lov_lockh);
3243 void lov_increase_kms(struct obd_export *exp, struct lov_stripe_md *lsm,
3246 struct lov_oinfo *loi;
3252 stripe = lov_stripe_number(lsm, size - 1);
3253 kms = lov_size_to_stripe(lsm, size, stripe);
3254 loi = &(lsm->lsm_oinfo[stripe]);
3256 CDEBUG(D_INODE, "stripe %d KMS %sincreasing "LPU64"->"LPU64"\n",
3257 stripe, kms > loi->loi_kms ? "" : "not ", loi->loi_kms, kms);
3258 if (kms > loi->loi_kms)
3262 EXPORT_SYMBOL(lov_increase_kms);
3264 struct obd_ops lov_obd_ops = {
3265 .o_owner = THIS_MODULE,
3266 .o_attach = lov_attach,
3267 .o_detach = lov_detach,
3268 .o_setup = lov_setup,
3269 .o_cleanup = lov_cleanup,
3270 .o_process_config = lov_process_config,
3271 .o_connect = lov_connect,
3272 .o_disconnect = lov_disconnect,
3273 .o_statfs = lov_statfs,
3274 .o_packmd = lov_packmd,
3275 .o_unpackmd = lov_unpackmd,
3276 .o_revalidate_md = lov_revalidate_md,
3277 .o_create = lov_create,
3278 .o_destroy = lov_destroy,
3279 .o_getattr = lov_getattr,
3280 .o_getattr_async = lov_getattr_async,
3281 .o_setattr = lov_setattr,
3283 .o_brw_async = lov_brw_async,
3284 .o_prep_async_page = lov_prep_async_page,
3285 .o_queue_async_io = lov_queue_async_io,
3286 .o_set_async_flags = lov_set_async_flags,
3287 .o_queue_group_io = lov_queue_group_io,
3288 .o_trigger_group_io = lov_trigger_group_io,
3289 .o_teardown_async_page = lov_teardown_async_page,
3290 .o_punch = lov_punch,
3292 .o_enqueue = lov_enqueue,
3293 .o_match = lov_match,
3294 .o_change_cbdata = lov_change_cbdata,
3295 .o_cancel = lov_cancel,
3296 .o_cancel_unused = lov_cancel_unused,
3297 .o_iocontrol = lov_iocontrol,
3298 .o_get_info = lov_get_info,
3299 .o_set_info = lov_set_info,
3300 .o_llog_init = lov_llog_init,
3301 .o_llog_finish = lov_llog_finish,
3302 .o_notify = lov_notify,
3305 int __init lov_init(void)
3307 struct lprocfs_static_vars lvars;
3311 lprocfs_init_vars(lov, &lvars);
3312 rc = class_register_type(&lov_obd_ops, NULL, lvars.module_vars,
3313 OBD_LOV_DEVICENAME);
3318 static void /*__exit*/ lov_exit(void)
3320 class_unregister_type(OBD_LOV_DEVICENAME);
3323 MODULE_AUTHOR("Cluster File Systems, Inc. <info@clusterfs.com>");
3324 MODULE_DESCRIPTION("Lustre Logical Object Volume OBD driver");
3325 MODULE_LICENSE("GPL");
3327 module_init(lov_init);
3328 module_exit(lov_exit);