| /* |
| * GPL HEADER START |
| * |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 only, |
| * as published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope that it will be useful, but |
| * WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * General Public License version 2 for more details (a copy is included |
| * in the LICENSE file that accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License |
| * version 2 along with this program; If not, see |
| * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf |
| * |
| * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| * CA 95054 USA or visit www.sun.com if you need additional information or |
| * have any questions. |
| * |
| * GPL HEADER END |
| */ |
| /* |
| * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved. |
| * Use is subject to license terms. |
| * |
| * Copyright (c) 2011, 2012, Intel Corporation. |
| */ |
| /* |
| * This file is part of Lustre, http://www.lustre.org/ |
| * Lustre is a trademark of Sun Microsystems, Inc. |
| * |
| * lustre/lov/lov_obd.c |
| * |
| * Author: Phil Schwan <phil@clusterfs.com> |
| * Author: Peter Braam <braam@clusterfs.com> |
| * Author: Mike Shaver <shaver@clusterfs.com> |
| * Author: Nathan Rutman <nathan@clusterfs.com> |
| */ |
| |
| #define DEBUG_SUBSYSTEM S_LOV |
| #include "../../include/linux/libcfs/libcfs.h" |
| |
| #include "../include/obd_support.h" |
| #include "../include/lustre_lib.h" |
| #include "../include/lustre_net.h" |
| #include "../include/lustre/lustre_idl.h" |
| #include "../include/lustre_dlm.h" |
| #include "../include/lustre_mds.h" |
| #include "../include/obd_class.h" |
| #include "../include/obd_ost.h" |
| #include "../include/lprocfs_status.h" |
| #include "../include/lustre_param.h" |
| #include "../include/cl_object.h" |
| #include "../include/lclient.h" /* for cl_client_lru */ |
| #include "../include/lustre/ll_fiemap.h" |
| #include "../include/lustre_fid.h" |
| |
| #include "lov_internal.h" |
| |
| /* Keep a refcount of lov->tgt usage to prevent racing with addition/deletion. |
| Any function that expects lov_tgts to remain stationary must take a ref. */ |
| static void lov_getref(struct obd_device *obd) |
| { |
| struct lov_obd *lov = &obd->u.lov; |
| |
| /* nobody gets through here until lov_putref is done */ |
| mutex_lock(&lov->lov_lock); |
| atomic_inc(&lov->lov_refcount); |
| mutex_unlock(&lov->lov_lock); |
| return; |
| } |
| |
| static void __lov_del_obd(struct obd_device *obd, struct lov_tgt_desc *tgt); |
| |
| static void lov_putref(struct obd_device *obd) |
| { |
| struct lov_obd *lov = &obd->u.lov; |
| |
| mutex_lock(&lov->lov_lock); |
| /* ok to dec to 0 more than once -- ltd_exp's will be null */ |
| if (atomic_dec_and_test(&lov->lov_refcount) && lov->lov_death_row) { |
| LIST_HEAD(kill); |
| int i; |
| struct lov_tgt_desc *tgt, *n; |
| CDEBUG(D_CONFIG, "destroying %d lov targets\n", |
| lov->lov_death_row); |
| for (i = 0; i < lov->desc.ld_tgt_count; i++) { |
| tgt = lov->lov_tgts[i]; |
| |
| if (!tgt || !tgt->ltd_reap) |
| continue; |
| list_add(&tgt->ltd_kill, &kill); |
| /* XXX - right now there is a dependency on ld_tgt_count |
| * being the maximum tgt index for computing the |
| * mds_max_easize. So we can't shrink it. */ |
| lov_ost_pool_remove(&lov->lov_packed, i); |
| lov->lov_tgts[i] = NULL; |
| lov->lov_death_row--; |
| } |
| mutex_unlock(&lov->lov_lock); |
| |
| list_for_each_entry_safe(tgt, n, &kill, ltd_kill) { |
| list_del(&tgt->ltd_kill); |
| /* Disconnect */ |
| __lov_del_obd(obd, tgt); |
| } |
| } else { |
| mutex_unlock(&lov->lov_lock); |
| } |
| } |
| |
| static int lov_set_osc_active(struct obd_device *obd, struct obd_uuid *uuid, |
| enum obd_notify_event ev); |
| static int lov_notify(struct obd_device *obd, struct obd_device *watched, |
| enum obd_notify_event ev, void *data); |
| |
| |
| #define MAX_STRING_SIZE 128 |
| int lov_connect_obd(struct obd_device *obd, __u32 index, int activate, |
| struct obd_connect_data *data) |
| { |
| struct lov_obd *lov = &obd->u.lov; |
| struct obd_uuid *tgt_uuid; |
| struct obd_device *tgt_obd; |
| static struct obd_uuid lov_osc_uuid = { "LOV_OSC_UUID" }; |
| struct obd_import *imp; |
| struct proc_dir_entry *lov_proc_dir; |
| int rc; |
| |
| if (!lov->lov_tgts[index]) |
| return -EINVAL; |
| |
| tgt_uuid = &lov->lov_tgts[index]->ltd_uuid; |
| tgt_obd = lov->lov_tgts[index]->ltd_obd; |
| |
| if (!tgt_obd->obd_set_up) { |
| CERROR("Target %s not set up\n", obd_uuid2str(tgt_uuid)); |
| return -EINVAL; |
| } |
| |
| /* override the sp_me from lov */ |
| tgt_obd->u.cli.cl_sp_me = lov->lov_sp_me; |
| |
| if (data && (data->ocd_connect_flags & OBD_CONNECT_INDEX)) |
| data->ocd_index = index; |
| |
| /* |
| * Divine LOV knows that OBDs under it are OSCs. |
| */ |
| imp = tgt_obd->u.cli.cl_import; |
| |
| if (activate) { |
| tgt_obd->obd_no_recov = 0; |
| /* FIXME this is probably supposed to be |
| ptlrpc_set_import_active. Horrible naming. */ |
| ptlrpc_activate_import(imp); |
| } |
| |
| rc = obd_register_observer(tgt_obd, obd); |
| if (rc) { |
| CERROR("Target %s register_observer error %d\n", |
| obd_uuid2str(tgt_uuid), rc); |
| return rc; |
| } |
| |
| |
| if (imp->imp_invalid) { |
| CDEBUG(D_CONFIG, "not connecting OSC %s; administratively " |
| "disabled\n", obd_uuid2str(tgt_uuid)); |
| return 0; |
| } |
| |
| rc = obd_connect(NULL, &lov->lov_tgts[index]->ltd_exp, tgt_obd, |
| &lov_osc_uuid, data, NULL); |
| if (rc || !lov->lov_tgts[index]->ltd_exp) { |
| CERROR("Target %s connect error %d\n", |
| obd_uuid2str(tgt_uuid), rc); |
| return -ENODEV; |
| } |
| |
| lov->lov_tgts[index]->ltd_reap = 0; |
| |
| CDEBUG(D_CONFIG, "Connected tgt idx %d %s (%s) %sactive\n", index, |
| obd_uuid2str(tgt_uuid), tgt_obd->obd_name, activate ? "":"in"); |
| |
| lov_proc_dir = obd->obd_proc_private; |
| if (lov_proc_dir) { |
| struct obd_device *osc_obd = lov->lov_tgts[index]->ltd_exp->exp_obd; |
| struct proc_dir_entry *osc_symlink; |
| |
| LASSERT(osc_obd != NULL); |
| LASSERT(osc_obd->obd_magic == OBD_DEVICE_MAGIC); |
| LASSERT(osc_obd->obd_type->typ_name != NULL); |
| |
| osc_symlink = lprocfs_add_symlink(osc_obd->obd_name, |
| lov_proc_dir, |
| "../../../%s/%s", |
| osc_obd->obd_type->typ_name, |
| osc_obd->obd_name); |
| if (osc_symlink == NULL) { |
| CERROR("could not register LOV target " |
| "/proc/fs/lustre/%s/%s/target_obds/%s.", |
| obd->obd_type->typ_name, obd->obd_name, |
| osc_obd->obd_name); |
| lprocfs_remove(&lov_proc_dir); |
| obd->obd_proc_private = NULL; |
| } |
| } |
| |
| return 0; |
| } |
| |
| static int lov_connect(const struct lu_env *env, |
| struct obd_export **exp, struct obd_device *obd, |
| struct obd_uuid *cluuid, struct obd_connect_data *data, |
| void *localdata) |
| { |
| struct lov_obd *lov = &obd->u.lov; |
| struct lov_tgt_desc *tgt; |
| struct lustre_handle conn; |
| int i, rc; |
| |
| CDEBUG(D_CONFIG, "connect #%d\n", lov->lov_connects); |
| |
| rc = class_connect(&conn, obd, cluuid); |
| if (rc) |
| return rc; |
| |
| *exp = class_conn2export(&conn); |
| |
| /* Why should there ever be more than 1 connect? */ |
| lov->lov_connects++; |
| LASSERT(lov->lov_connects == 1); |
| |
| memset(&lov->lov_ocd, 0, sizeof(lov->lov_ocd)); |
| if (data) |
| lov->lov_ocd = *data; |
| |
| obd_getref(obd); |
| for (i = 0; i < lov->desc.ld_tgt_count; i++) { |
| tgt = lov->lov_tgts[i]; |
| if (!tgt || obd_uuid_empty(&tgt->ltd_uuid)) |
| continue; |
| /* Flags will be lowest common denominator */ |
| rc = lov_connect_obd(obd, i, tgt->ltd_activate, &lov->lov_ocd); |
| if (rc) { |
| CERROR("%s: lov connect tgt %d failed: %d\n", |
| obd->obd_name, i, rc); |
| continue; |
| } |
| /* connect to administrative disabled ost */ |
| if (!lov->lov_tgts[i]->ltd_exp) |
| continue; |
| |
| rc = lov_notify(obd, lov->lov_tgts[i]->ltd_exp->exp_obd, |
| OBD_NOTIFY_CONNECT, (void *)&i); |
| if (rc) { |
| CERROR("%s error sending notify %d\n", |
| obd->obd_name, rc); |
| } |
| } |
| obd_putref(obd); |
| |
| return 0; |
| } |
| |
| static int lov_disconnect_obd(struct obd_device *obd, struct lov_tgt_desc *tgt) |
| { |
| struct proc_dir_entry *lov_proc_dir; |
| struct lov_obd *lov = &obd->u.lov; |
| struct obd_device *osc_obd; |
| int rc; |
| |
| osc_obd = class_exp2obd(tgt->ltd_exp); |
| CDEBUG(D_CONFIG, "%s: disconnecting target %s\n", |
| obd->obd_name, osc_obd ? osc_obd->obd_name : "NULL"); |
| |
| if (tgt->ltd_active) { |
| tgt->ltd_active = 0; |
| lov->desc.ld_active_tgt_count--; |
| tgt->ltd_exp->exp_obd->obd_inactive = 1; |
| } |
| |
| if (osc_obd) { |
| lov_proc_dir = obd->obd_proc_private; |
| if (lov_proc_dir) { |
| lprocfs_remove_proc_entry(osc_obd->obd_name, lov_proc_dir); |
| } |
| /* Pass it on to our clients. |
| * XXX This should be an argument to disconnect, |
| * XXX not a back-door flag on the OBD. Ah well. |
| */ |
| osc_obd->obd_force = obd->obd_force; |
| osc_obd->obd_fail = obd->obd_fail; |
| osc_obd->obd_no_recov = obd->obd_no_recov; |
| } |
| |
| obd_register_observer(osc_obd, NULL); |
| |
| rc = obd_disconnect(tgt->ltd_exp); |
| if (rc) { |
| CERROR("Target %s disconnect error %d\n", |
| tgt->ltd_uuid.uuid, rc); |
| rc = 0; |
| } |
| |
| tgt->ltd_exp = NULL; |
| return 0; |
| } |
| |
| static int lov_disconnect(struct obd_export *exp) |
| { |
| struct obd_device *obd = class_exp2obd(exp); |
| struct lov_obd *lov = &obd->u.lov; |
| int i, rc; |
| |
| if (!lov->lov_tgts) |
| goto out; |
| |
| /* Only disconnect the underlying layers on the final disconnect. */ |
| lov->lov_connects--; |
| if (lov->lov_connects != 0) { |
| /* why should there be more than 1 connect? */ |
| CERROR("disconnect #%d\n", lov->lov_connects); |
| goto out; |
| } |
| |
| /* Let's hold another reference so lov_del_obd doesn't spin through |
| putref every time */ |
| obd_getref(obd); |
| |
| for (i = 0; i < lov->desc.ld_tgt_count; i++) { |
| if (lov->lov_tgts[i] && lov->lov_tgts[i]->ltd_exp) { |
| /* Disconnection is the last we know about an obd */ |
| lov_del_target(obd, i, NULL, lov->lov_tgts[i]->ltd_gen); |
| } |
| } |
| obd_putref(obd); |
| |
| out: |
| rc = class_disconnect(exp); /* bz 9811 */ |
| return rc; |
| } |
| |
| /* Error codes: |
| * |
| * -EINVAL : UUID can't be found in the LOV's target list |
| * -ENOTCONN: The UUID is found, but the target connection is bad (!) |
| * -EBADF : The UUID is found, but the OBD is the wrong type (!) |
| * any >= 0 : is log target index |
| */ |
| static int lov_set_osc_active(struct obd_device *obd, struct obd_uuid *uuid, |
| enum obd_notify_event ev) |
| { |
| struct lov_obd *lov = &obd->u.lov; |
| struct lov_tgt_desc *tgt; |
| int index, activate, active; |
| |
| CDEBUG(D_INFO, "Searching in lov %p for uuid %s event(%d)\n", |
| lov, uuid->uuid, ev); |
| |
| obd_getref(obd); |
| for (index = 0; index < lov->desc.ld_tgt_count; index++) { |
| tgt = lov->lov_tgts[index]; |
| if (!tgt) |
| continue; |
| /* |
| * LU-642, initially inactive OSC could miss the obd_connect, |
| * we make up for it here. |
| */ |
| if (ev == OBD_NOTIFY_ACTIVATE && tgt->ltd_exp == NULL && |
| obd_uuid_equals(uuid, &tgt->ltd_uuid)) { |
| struct obd_uuid lov_osc_uuid = {"LOV_OSC_UUID"}; |
| |
| obd_connect(NULL, &tgt->ltd_exp, tgt->ltd_obd, |
| &lov_osc_uuid, &lov->lov_ocd, NULL); |
| } |
| if (!tgt->ltd_exp) |
| continue; |
| |
| CDEBUG(D_INFO, "lov idx %d is %s conn %#llx\n", |
| index, obd_uuid2str(&tgt->ltd_uuid), |
| tgt->ltd_exp->exp_handle.h_cookie); |
| if (obd_uuid_equals(uuid, &tgt->ltd_uuid)) |
| break; |
| } |
| |
| if (index == lov->desc.ld_tgt_count) |
| GOTO(out, index = -EINVAL); |
| |
| if (ev == OBD_NOTIFY_DEACTIVATE || ev == OBD_NOTIFY_ACTIVATE) { |
| activate = (ev == OBD_NOTIFY_ACTIVATE) ? 1 : 0; |
| |
| if (lov->lov_tgts[index]->ltd_activate == activate) { |
| CDEBUG(D_INFO, "OSC %s already %sactivate!\n", |
| uuid->uuid, activate ? "" : "de"); |
| } else { |
| lov->lov_tgts[index]->ltd_activate = activate; |
| CDEBUG(D_CONFIG, "%sactivate OSC %s\n", |
| activate ? "" : "de", obd_uuid2str(uuid)); |
| } |
| |
| } else if (ev == OBD_NOTIFY_INACTIVE || ev == OBD_NOTIFY_ACTIVE) { |
| active = (ev == OBD_NOTIFY_ACTIVE) ? 1 : 0; |
| |
| if (lov->lov_tgts[index]->ltd_active == active) { |
| CDEBUG(D_INFO, "OSC %s already %sactive!\n", |
| uuid->uuid, active ? "" : "in"); |
| GOTO(out, index); |
| } else { |
| CDEBUG(D_CONFIG, "Marking OSC %s %sactive\n", |
| obd_uuid2str(uuid), active ? "" : "in"); |
| } |
| |
| lov->lov_tgts[index]->ltd_active = active; |
| if (active) { |
| lov->desc.ld_active_tgt_count++; |
| lov->lov_tgts[index]->ltd_exp->exp_obd->obd_inactive = 0; |
| } else { |
| lov->desc.ld_active_tgt_count--; |
| lov->lov_tgts[index]->ltd_exp->exp_obd->obd_inactive = 1; |
| } |
| } else { |
| CERROR("Unknown event(%d) for uuid %s", ev, uuid->uuid); |
| } |
| |
| out: |
| obd_putref(obd); |
| return index; |
| } |
| |
| static int lov_notify(struct obd_device *obd, struct obd_device *watched, |
| enum obd_notify_event ev, void *data) |
| { |
| int rc = 0; |
| struct lov_obd *lov = &obd->u.lov; |
| |
| down_read(&lov->lov_notify_lock); |
| if (!lov->lov_connects) { |
| up_read(&lov->lov_notify_lock); |
| return rc; |
| } |
| |
| if (ev == OBD_NOTIFY_ACTIVE || ev == OBD_NOTIFY_INACTIVE || |
| ev == OBD_NOTIFY_ACTIVATE || ev == OBD_NOTIFY_DEACTIVATE) { |
| struct obd_uuid *uuid; |
| |
| LASSERT(watched); |
| |
| if (strcmp(watched->obd_type->typ_name, LUSTRE_OSC_NAME)) { |
| up_read(&lov->lov_notify_lock); |
| CERROR("unexpected notification of %s %s!\n", |
| watched->obd_type->typ_name, |
| watched->obd_name); |
| return -EINVAL; |
| } |
| uuid = &watched->u.cli.cl_target_uuid; |
| |
| /* Set OSC as active before notifying the observer, so the |
| * observer can use the OSC normally. |
| */ |
| rc = lov_set_osc_active(obd, uuid, ev); |
| if (rc < 0) { |
| up_read(&lov->lov_notify_lock); |
| CERROR("event(%d) of %s failed: %d\n", ev, |
| obd_uuid2str(uuid), rc); |
| return rc; |
| } |
| /* active event should be pass lov target index as data */ |
| data = &rc; |
| } |
| |
| /* Pass the notification up the chain. */ |
| if (watched) { |
| rc = obd_notify_observer(obd, watched, ev, data); |
| } else { |
| /* NULL watched means all osc's in the lov (only for syncs) */ |
| /* sync event should be send lov idx as data */ |
| struct lov_obd *lov = &obd->u.lov; |
| int i, is_sync; |
| |
| data = &i; |
| is_sync = (ev == OBD_NOTIFY_SYNC) || |
| (ev == OBD_NOTIFY_SYNC_NONBLOCK); |
| |
| obd_getref(obd); |
| for (i = 0; i < lov->desc.ld_tgt_count; i++) { |
| if (!lov->lov_tgts[i]) |
| continue; |
| |
| /* don't send sync event if target not |
| * connected/activated */ |
| if (is_sync && !lov->lov_tgts[i]->ltd_active) |
| continue; |
| |
| rc = obd_notify_observer(obd, lov->lov_tgts[i]->ltd_obd, |
| ev, data); |
| if (rc) { |
| CERROR("%s: notify %s of %s failed %d\n", |
| obd->obd_name, |
| obd->obd_observer->obd_name, |
| lov->lov_tgts[i]->ltd_obd->obd_name, |
| rc); |
| } |
| } |
| obd_putref(obd); |
| } |
| |
| up_read(&lov->lov_notify_lock); |
| return rc; |
| } |
| |
| static int lov_add_target(struct obd_device *obd, struct obd_uuid *uuidp, |
| __u32 index, int gen, int active) |
| { |
| struct lov_obd *lov = &obd->u.lov; |
| struct lov_tgt_desc *tgt; |
| struct obd_device *tgt_obd; |
| int rc; |
| |
| CDEBUG(D_CONFIG, "uuid:%s idx:%d gen:%d active:%d\n", |
| uuidp->uuid, index, gen, active); |
| |
| if (gen <= 0) { |
| CERROR("request to add OBD %s with invalid generation: %d\n", |
| uuidp->uuid, gen); |
| return -EINVAL; |
| } |
| |
| tgt_obd = class_find_client_obd(uuidp, LUSTRE_OSC_NAME, |
| &obd->obd_uuid); |
| if (tgt_obd == NULL) |
| return -EINVAL; |
| |
| mutex_lock(&lov->lov_lock); |
| |
| if ((index < lov->lov_tgt_size) && (lov->lov_tgts[index] != NULL)) { |
| tgt = lov->lov_tgts[index]; |
| CERROR("UUID %s already assigned at LOV target index %d\n", |
| obd_uuid2str(&tgt->ltd_uuid), index); |
| mutex_unlock(&lov->lov_lock); |
| return -EEXIST; |
| } |
| |
| if (index >= lov->lov_tgt_size) { |
| /* We need to reallocate the lov target array. */ |
| struct lov_tgt_desc **newtgts, **old = NULL; |
| __u32 newsize, oldsize = 0; |
| |
| newsize = max_t(__u32, lov->lov_tgt_size, 2); |
| while (newsize < index + 1) |
| newsize = newsize << 1; |
| OBD_ALLOC(newtgts, sizeof(*newtgts) * newsize); |
| if (newtgts == NULL) { |
| mutex_unlock(&lov->lov_lock); |
| return -ENOMEM; |
| } |
| |
| if (lov->lov_tgt_size) { |
| memcpy(newtgts, lov->lov_tgts, sizeof(*newtgts) * |
| lov->lov_tgt_size); |
| old = lov->lov_tgts; |
| oldsize = lov->lov_tgt_size; |
| } |
| |
| lov->lov_tgts = newtgts; |
| lov->lov_tgt_size = newsize; |
| smp_rmb(); |
| if (old) |
| OBD_FREE(old, sizeof(*old) * oldsize); |
| |
| CDEBUG(D_CONFIG, "tgts: %p size: %d\n", |
| lov->lov_tgts, lov->lov_tgt_size); |
| } |
| |
| OBD_ALLOC_PTR(tgt); |
| if (!tgt) { |
| mutex_unlock(&lov->lov_lock); |
| return -ENOMEM; |
| } |
| |
| rc = lov_ost_pool_add(&lov->lov_packed, index, lov->lov_tgt_size); |
| if (rc) { |
| mutex_unlock(&lov->lov_lock); |
| OBD_FREE_PTR(tgt); |
| return rc; |
| } |
| |
| tgt->ltd_uuid = *uuidp; |
| tgt->ltd_obd = tgt_obd; |
| /* XXX - add a sanity check on the generation number. */ |
| tgt->ltd_gen = gen; |
| tgt->ltd_index = index; |
| tgt->ltd_activate = active; |
| lov->lov_tgts[index] = tgt; |
| if (index >= lov->desc.ld_tgt_count) |
| lov->desc.ld_tgt_count = index + 1; |
| |
| mutex_unlock(&lov->lov_lock); |
| |
| CDEBUG(D_CONFIG, "idx=%d ltd_gen=%d ld_tgt_count=%d\n", |
| index, tgt->ltd_gen, lov->desc.ld_tgt_count); |
| |
| rc = obd_notify(obd, tgt_obd, OBD_NOTIFY_CREATE, &index); |
| |
| if (lov->lov_connects == 0) { |
| /* lov_connect hasn't been called yet. We'll do the |
| lov_connect_obd on this target when that fn first runs, |
| because we don't know the connect flags yet. */ |
| return 0; |
| } |
| |
| obd_getref(obd); |
| |
| rc = lov_connect_obd(obd, index, active, &lov->lov_ocd); |
| if (rc) |
| GOTO(out, rc); |
| |
| /* connect to administrative disabled ost */ |
| if (!tgt->ltd_exp) |
| GOTO(out, rc = 0); |
| |
| if (lov->lov_cache != NULL) { |
| rc = obd_set_info_async(NULL, tgt->ltd_exp, |
| sizeof(KEY_CACHE_SET), KEY_CACHE_SET, |
| sizeof(struct cl_client_cache), lov->lov_cache, |
| NULL); |
| if (rc < 0) |
| GOTO(out, rc); |
| } |
| |
| rc = lov_notify(obd, tgt->ltd_exp->exp_obd, |
| active ? OBD_NOTIFY_CONNECT : OBD_NOTIFY_INACTIVE, |
| (void *)&index); |
| |
| out: |
| if (rc) { |
| CERROR("add failed (%d), deleting %s\n", rc, |
| obd_uuid2str(&tgt->ltd_uuid)); |
| lov_del_target(obd, index, NULL, 0); |
| } |
| obd_putref(obd); |
| return rc; |
| } |
| |
| /* Schedule a target for deletion */ |
| int lov_del_target(struct obd_device *obd, __u32 index, |
| struct obd_uuid *uuidp, int gen) |
| { |
| struct lov_obd *lov = &obd->u.lov; |
| int count = lov->desc.ld_tgt_count; |
| int rc = 0; |
| |
| if (index >= count) { |
| CERROR("LOV target index %d >= number of LOV OBDs %d.\n", |
| index, count); |
| return -EINVAL; |
| } |
| |
| /* to make sure there's no ongoing lov_notify() now */ |
| down_write(&lov->lov_notify_lock); |
| obd_getref(obd); |
| |
| if (!lov->lov_tgts[index]) { |
| CERROR("LOV target at index %d is not setup.\n", index); |
| GOTO(out, rc = -EINVAL); |
| } |
| |
| if (uuidp && !obd_uuid_equals(uuidp, &lov->lov_tgts[index]->ltd_uuid)) { |
| CERROR("LOV target UUID %s at index %d doesn't match %s.\n", |
| lov_uuid2str(lov, index), index, |
| obd_uuid2str(uuidp)); |
| GOTO(out, rc = -EINVAL); |
| } |
| |
| CDEBUG(D_CONFIG, "uuid: %s idx: %d gen: %d exp: %p active: %d\n", |
| lov_uuid2str(lov, index), index, |
| lov->lov_tgts[index]->ltd_gen, lov->lov_tgts[index]->ltd_exp, |
| lov->lov_tgts[index]->ltd_active); |
| |
| lov->lov_tgts[index]->ltd_reap = 1; |
| lov->lov_death_row++; |
| /* we really delete it from obd_putref */ |
| out: |
| obd_putref(obd); |
| up_write(&lov->lov_notify_lock); |
| |
| return rc; |
| } |
| |
| static void __lov_del_obd(struct obd_device *obd, struct lov_tgt_desc *tgt) |
| { |
| struct obd_device *osc_obd; |
| |
| LASSERT(tgt); |
| LASSERT(tgt->ltd_reap); |
| |
| osc_obd = class_exp2obd(tgt->ltd_exp); |
| |
| CDEBUG(D_CONFIG, "Removing tgt %s : %s\n", |
| tgt->ltd_uuid.uuid, |
| osc_obd ? osc_obd->obd_name : "<no obd>"); |
| |
| if (tgt->ltd_exp) |
| lov_disconnect_obd(obd, tgt); |
| |
| OBD_FREE_PTR(tgt); |
| |
| /* Manual cleanup - no cleanup logs to clean up the osc's. We must |
| do it ourselves. And we can't do it from lov_cleanup, |
| because we just lost our only reference to it. */ |
| if (osc_obd) |
| class_manual_cleanup(osc_obd); |
| } |
| |
| void lov_fix_desc_stripe_size(__u64 *val) |
| { |
| if (*val < LOV_MIN_STRIPE_SIZE) { |
| if (*val != 0) |
| LCONSOLE_INFO("Increasing default stripe size to " |
| "minimum %u\n", |
| LOV_DESC_STRIPE_SIZE_DEFAULT); |
| *val = LOV_DESC_STRIPE_SIZE_DEFAULT; |
| } else if (*val & (LOV_MIN_STRIPE_SIZE - 1)) { |
| *val &= ~(LOV_MIN_STRIPE_SIZE - 1); |
| LCONSOLE_WARN("Changing default stripe size to %llu (a multiple of %u)\n", |
| *val, LOV_MIN_STRIPE_SIZE); |
| } |
| } |
| |
| void lov_fix_desc_stripe_count(__u32 *val) |
| { |
| if (*val == 0) |
| *val = 1; |
| } |
| |
| void lov_fix_desc_pattern(__u32 *val) |
| { |
| /* from lov_setstripe */ |
| if ((*val != 0) && (*val != LOV_PATTERN_RAID0)) { |
| LCONSOLE_WARN("Unknown stripe pattern: %#x\n", *val); |
| *val = 0; |
| } |
| } |
| |
| void lov_fix_desc_qos_maxage(__u32 *val) |
| { |
| if (*val == 0) |
| *val = LOV_DESC_QOS_MAXAGE_DEFAULT; |
| } |
| |
| void lov_fix_desc(struct lov_desc *desc) |
| { |
| lov_fix_desc_stripe_size(&desc->ld_default_stripe_size); |
| lov_fix_desc_stripe_count(&desc->ld_default_stripe_count); |
| lov_fix_desc_pattern(&desc->ld_pattern); |
| lov_fix_desc_qos_maxage(&desc->ld_qos_maxage); |
| } |
| |
| int lov_setup(struct obd_device *obd, struct lustre_cfg *lcfg) |
| { |
| struct lprocfs_static_vars lvars = { NULL }; |
| struct lov_desc *desc; |
| struct lov_obd *lov = &obd->u.lov; |
| int rc; |
| |
| if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1) { |
| CERROR("LOV setup requires a descriptor\n"); |
| return -EINVAL; |
| } |
| |
| desc = (struct lov_desc *)lustre_cfg_buf(lcfg, 1); |
| |
| if (sizeof(*desc) > LUSTRE_CFG_BUFLEN(lcfg, 1)) { |
| CERROR("descriptor size wrong: %d > %d\n", |
| (int)sizeof(*desc), LUSTRE_CFG_BUFLEN(lcfg, 1)); |
| return -EINVAL; |
| } |
| |
| if (desc->ld_magic != LOV_DESC_MAGIC) { |
| if (desc->ld_magic == __swab32(LOV_DESC_MAGIC)) { |
| CDEBUG(D_OTHER, "%s: Swabbing lov desc %p\n", |
| obd->obd_name, desc); |
| lustre_swab_lov_desc(desc); |
| } else { |
| CERROR("%s: Bad lov desc magic: %#x\n", |
| obd->obd_name, desc->ld_magic); |
| return -EINVAL; |
| } |
| } |
| |
| lov_fix_desc(desc); |
| |
| desc->ld_active_tgt_count = 0; |
| lov->desc = *desc; |
| lov->lov_tgt_size = 0; |
| |
| mutex_init(&lov->lov_lock); |
| atomic_set(&lov->lov_refcount, 0); |
| lov->lov_sp_me = LUSTRE_SP_CLI; |
| |
| init_rwsem(&lov->lov_notify_lock); |
| |
| lov->lov_pools_hash_body = cfs_hash_create("POOLS", HASH_POOLS_CUR_BITS, |
| HASH_POOLS_MAX_BITS, |
| HASH_POOLS_BKT_BITS, 0, |
| CFS_HASH_MIN_THETA, |
| CFS_HASH_MAX_THETA, |
| &pool_hash_operations, |
| CFS_HASH_DEFAULT); |
| INIT_LIST_HEAD(&lov->lov_pool_list); |
| lov->lov_pool_count = 0; |
| rc = lov_ost_pool_init(&lov->lov_packed, 0); |
| if (rc) |
| GOTO(out, rc); |
| |
| lprocfs_lov_init_vars(&lvars); |
| lprocfs_obd_setup(obd, lvars.obd_vars); |
| #if defined (CONFIG_PROC_FS) |
| { |
| int rc1; |
| |
| rc1 = lprocfs_seq_create(obd->obd_proc_entry, "target_obd", |
| 0444, &lov_proc_target_fops, obd); |
| if (rc1) |
| CWARN("Error adding the target_obd file\n"); |
| } |
| #endif |
| lov->lov_pool_proc_entry = lprocfs_register("pools", |
| obd->obd_proc_entry, |
| NULL, NULL); |
| |
| return 0; |
| |
| out: |
| return rc; |
| } |
| |
| static int lov_precleanup(struct obd_device *obd, enum obd_cleanup_stage stage) |
| { |
| int rc = 0; |
| struct lov_obd *lov = &obd->u.lov; |
| |
| switch (stage) { |
| case OBD_CLEANUP_EARLY: { |
| int i; |
| for (i = 0; i < lov->desc.ld_tgt_count; i++) { |
| if (!lov->lov_tgts[i] || !lov->lov_tgts[i]->ltd_active) |
| continue; |
| obd_precleanup(class_exp2obd(lov->lov_tgts[i]->ltd_exp), |
| OBD_CLEANUP_EARLY); |
| } |
| break; |
| } |
| default: |
| break; |
| } |
| |
| return rc; |
| } |
| |
| static int lov_cleanup(struct obd_device *obd) |
| { |
| struct lov_obd *lov = &obd->u.lov; |
| struct list_head *pos, *tmp; |
| struct pool_desc *pool; |
| |
| list_for_each_safe(pos, tmp, &lov->lov_pool_list) { |
| pool = list_entry(pos, struct pool_desc, pool_list); |
| /* free pool structs */ |
| CDEBUG(D_INFO, "delete pool %p\n", pool); |
| /* In the function below, .hs_keycmp resolves to |
| * pool_hashkey_keycmp() */ |
| /* coverity[overrun-buffer-val] */ |
| lov_pool_del(obd, pool->pool_name); |
| } |
| cfs_hash_putref(lov->lov_pools_hash_body); |
| lov_ost_pool_free(&lov->lov_packed); |
| |
| lprocfs_obd_cleanup(obd); |
| if (lov->lov_tgts) { |
| int i; |
| obd_getref(obd); |
| for (i = 0; i < lov->desc.ld_tgt_count; i++) { |
| if (!lov->lov_tgts[i]) |
| continue; |
| |
| /* Inactive targets may never have connected */ |
| if (lov->lov_tgts[i]->ltd_active || |
| atomic_read(&lov->lov_refcount)) |
| /* We should never get here - these |
| should have been removed in the |
| disconnect. */ |
| CERROR("lov tgt %d not cleaned!" |
| " deathrow=%d, lovrc=%d\n", |
| i, lov->lov_death_row, |
| atomic_read(&lov->lov_refcount)); |
| lov_del_target(obd, i, NULL, 0); |
| } |
| obd_putref(obd); |
| OBD_FREE(lov->lov_tgts, sizeof(*lov->lov_tgts) * |
| lov->lov_tgt_size); |
| lov->lov_tgt_size = 0; |
| } |
| return 0; |
| } |
| |
| int lov_process_config_base(struct obd_device *obd, struct lustre_cfg *lcfg, |
| __u32 *indexp, int *genp) |
| { |
| struct obd_uuid obd_uuid; |
| int cmd; |
| int rc = 0; |
| |
| switch (cmd = lcfg->lcfg_command) { |
| case LCFG_LOV_ADD_OBD: |
| case LCFG_LOV_ADD_INA: |
| case LCFG_LOV_DEL_OBD: { |
| __u32 index; |
| int gen; |
| /* lov_modify_tgts add 0:lov_mdsA 1:ost1_UUID 2:0 3:1 */ |
| if (LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(obd_uuid.uuid)) |
| GOTO(out, rc = -EINVAL); |
| |
| obd_str2uuid(&obd_uuid, lustre_cfg_buf(lcfg, 1)); |
| |
| if (sscanf(lustre_cfg_buf(lcfg, 2), "%d", indexp) != 1) |
| GOTO(out, rc = -EINVAL); |
| if (sscanf(lustre_cfg_buf(lcfg, 3), "%d", genp) != 1) |
| GOTO(out, rc = -EINVAL); |
| index = *indexp; |
| gen = *genp; |
| if (cmd == LCFG_LOV_ADD_OBD) |
| rc = lov_add_target(obd, &obd_uuid, index, gen, 1); |
| else if (cmd == LCFG_LOV_ADD_INA) |
| rc = lov_add_target(obd, &obd_uuid, index, gen, 0); |
| else |
| rc = lov_del_target(obd, index, &obd_uuid, gen); |
| GOTO(out, rc); |
| } |
| case LCFG_PARAM: { |
| struct lprocfs_static_vars lvars = { NULL }; |
| struct lov_desc *desc = &(obd->u.lov.desc); |
| |
| if (!desc) |
| GOTO(out, rc = -EINVAL); |
| |
| lprocfs_lov_init_vars(&lvars); |
| |
| rc = class_process_proc_param(PARAM_LOV, lvars.obd_vars, |
| lcfg, obd); |
| if (rc > 0) |
| rc = 0; |
| GOTO(out, rc); |
| } |
| case LCFG_POOL_NEW: |
| case LCFG_POOL_ADD: |
| case LCFG_POOL_DEL: |
| case LCFG_POOL_REM: |
| GOTO(out, rc); |
| |
| default: { |
| CERROR("Unknown command: %d\n", lcfg->lcfg_command); |
| GOTO(out, rc = -EINVAL); |
| |
| } |
| } |
| out: |
| return rc; |
| } |
| |
| static int lov_recreate(struct obd_export *exp, struct obdo *src_oa, |
| struct lov_stripe_md **ea, struct obd_trans_info *oti) |
| { |
| struct lov_stripe_md *obj_mdp, *lsm; |
| struct lov_obd *lov = &exp->exp_obd->u.lov; |
| unsigned ost_idx; |
| int rc, i; |
| |
| LASSERT(src_oa->o_valid & OBD_MD_FLFLAGS && |
| src_oa->o_flags & OBD_FL_RECREATE_OBJS); |
| |
| OBD_ALLOC(obj_mdp, sizeof(*obj_mdp)); |
| if (obj_mdp == NULL) |
| return -ENOMEM; |
| |
| ost_idx = src_oa->o_nlink; |
| lsm = *ea; |
| if (lsm == NULL) |
| GOTO(out, rc = -EINVAL); |
| if (ost_idx >= lov->desc.ld_tgt_count || |
| !lov->lov_tgts[ost_idx]) |
| GOTO(out, rc = -EINVAL); |
| |
| for (i = 0; i < lsm->lsm_stripe_count; i++) { |
| if (lsm->lsm_oinfo[i]->loi_ost_idx == ost_idx) { |
| if (ostid_id(&lsm->lsm_oinfo[i]->loi_oi) != |
| ostid_id(&src_oa->o_oi)) |
| GOTO(out, rc = -EINVAL); |
| break; |
| } |
| } |
| if (i == lsm->lsm_stripe_count) |
| GOTO(out, rc = -EINVAL); |
| |
| rc = obd_create(NULL, lov->lov_tgts[ost_idx]->ltd_exp, |
| src_oa, &obj_mdp, oti); |
| out: |
| OBD_FREE(obj_mdp, sizeof(*obj_mdp)); |
| return rc; |
| } |
| |
| /* the LOV expects oa->o_id to be set to the LOV object id */ |
| static int lov_create(const struct lu_env *env, struct obd_export *exp, |
| struct obdo *src_oa, struct lov_stripe_md **ea, |
| struct obd_trans_info *oti) |
| { |
| struct lov_obd *lov; |
| int rc = 0; |
| |
| LASSERT(ea != NULL); |
| if (exp == NULL) |
| return -EINVAL; |
| |
| if ((src_oa->o_valid & OBD_MD_FLFLAGS) && |
| src_oa->o_flags == OBD_FL_DELORPHAN) { |
| /* should be used with LOV anymore */ |
| LBUG(); |
| } |
| |
| lov = &exp->exp_obd->u.lov; |
| if (!lov->desc.ld_active_tgt_count) |
| return -EIO; |
| |
| obd_getref(exp->exp_obd); |
| /* Recreate a specific object id at the given OST index */ |
| if ((src_oa->o_valid & OBD_MD_FLFLAGS) && |
| (src_oa->o_flags & OBD_FL_RECREATE_OBJS)) { |
| rc = lov_recreate(exp, src_oa, ea, oti); |
| } |
| |
| obd_putref(exp->exp_obd); |
| return rc; |
| } |
| |
| #define ASSERT_LSM_MAGIC(lsmp) \ |
| do { \ |
| LASSERT((lsmp) != NULL); \ |
| LASSERTF(((lsmp)->lsm_magic == LOV_MAGIC_V1 || \ |
| (lsmp)->lsm_magic == LOV_MAGIC_V3), \ |
| "%p->lsm_magic=%x\n", (lsmp), (lsmp)->lsm_magic); \ |
| } while (0) |
| |
| static int lov_destroy(const struct lu_env *env, struct obd_export *exp, |
| struct obdo *oa, struct lov_stripe_md *lsm, |
| struct obd_trans_info *oti, struct obd_export *md_exp, |
| void *capa) |
| { |
| struct lov_request_set *set; |
| struct obd_info oinfo; |
| struct lov_request *req; |
| struct list_head *pos; |
| struct lov_obd *lov; |
| int rc = 0, err = 0; |
| |
| ASSERT_LSM_MAGIC(lsm); |
| |
| if (!exp || !exp->exp_obd) |
| return -ENODEV; |
| |
| if (oa->o_valid & OBD_MD_FLCOOKIE) { |
| LASSERT(oti); |
| LASSERT(oti->oti_logcookies); |
| } |
| |
| lov = &exp->exp_obd->u.lov; |
| obd_getref(exp->exp_obd); |
| rc = lov_prep_destroy_set(exp, &oinfo, oa, lsm, oti, &set); |
| if (rc) |
| GOTO(out, rc); |
| |
| list_for_each(pos, &set->set_list) { |
| req = list_entry(pos, struct lov_request, rq_link); |
| |
| if (oa->o_valid & OBD_MD_FLCOOKIE) |
| oti->oti_logcookies = set->set_cookies + req->rq_stripe; |
| |
| err = obd_destroy(env, lov->lov_tgts[req->rq_idx]->ltd_exp, |
| req->rq_oi.oi_oa, NULL, oti, NULL, capa); |
| err = lov_update_common_set(set, req, err); |
| if (err) { |
| CERROR("%s: destroying objid "DOSTID" subobj " |
| DOSTID" on OST idx %d: rc = %d\n", |
| exp->exp_obd->obd_name, POSTID(&oa->o_oi), |
| POSTID(&req->rq_oi.oi_oa->o_oi), |
| req->rq_idx, err); |
| if (!rc) |
| rc = err; |
| } |
| } |
| |
| if (rc == 0) { |
| LASSERT(lsm_op_find(lsm->lsm_magic) != NULL); |
| rc = lsm_op_find(lsm->lsm_magic)->lsm_destroy(lsm, oa, md_exp); |
| } |
| err = lov_fini_destroy_set(set); |
| out: |
| obd_putref(exp->exp_obd); |
| return rc ? rc : err; |
| } |
| |
| static int lov_getattr(const struct lu_env *env, struct obd_export *exp, |
| struct obd_info *oinfo) |
| { |
| struct lov_request_set *set; |
| struct lov_request *req; |
| struct list_head *pos; |
| struct lov_obd *lov; |
| int err = 0, rc = 0; |
| |
| LASSERT(oinfo); |
| ASSERT_LSM_MAGIC(oinfo->oi_md); |
| |
| if (!exp || !exp->exp_obd) |
| return -ENODEV; |
| |
| lov = &exp->exp_obd->u.lov; |
| |
| rc = lov_prep_getattr_set(exp, oinfo, &set); |
| if (rc) |
| return rc; |
| |
| list_for_each(pos, &set->set_list) { |
| req = list_entry(pos, struct lov_request, rq_link); |
| |
| CDEBUG(D_INFO, "objid "DOSTID"[%d] has subobj "DOSTID" at idx" |
| " %u\n", POSTID(&oinfo->oi_oa->o_oi), req->rq_stripe, |
| POSTID(&req->rq_oi.oi_oa->o_oi), req->rq_idx); |
| |
| rc = obd_getattr(env, lov->lov_tgts[req->rq_idx]->ltd_exp, |
| &req->rq_oi); |
| err = lov_update_common_set(set, req, rc); |
| if (err) { |
| CERROR("%s: getattr objid "DOSTID" subobj " |
| DOSTID" on OST idx %d: rc = %d\n", |
| exp->exp_obd->obd_name, |
| POSTID(&oinfo->oi_oa->o_oi), |
| POSTID(&req->rq_oi.oi_oa->o_oi), |
| req->rq_idx, err); |
| break; |
| } |
| } |
| |
| rc = lov_fini_getattr_set(set); |
| if (err) |
| rc = err; |
| return rc; |
| } |
| |
| static int lov_getattr_interpret(struct ptlrpc_request_set *rqset, |
| void *data, int rc) |
| { |
| struct lov_request_set *lovset = (struct lov_request_set *)data; |
| int err; |
| |
| /* don't do attribute merge if this async op failed */ |
| if (rc) |
| atomic_set(&lovset->set_completes, 0); |
| err = lov_fini_getattr_set(lovset); |
| return rc ? rc : err; |
| } |
| |
| static int lov_getattr_async(struct obd_export *exp, struct obd_info *oinfo, |
| struct ptlrpc_request_set *rqset) |
| { |
| struct lov_request_set *lovset; |
| struct lov_obd *lov; |
| struct list_head *pos; |
| struct lov_request *req; |
| int rc = 0, err; |
| |
| LASSERT(oinfo); |
| ASSERT_LSM_MAGIC(oinfo->oi_md); |
| |
| if (!exp || !exp->exp_obd) |
| return -ENODEV; |
| |
| lov = &exp->exp_obd->u.lov; |
| |
| rc = lov_prep_getattr_set(exp, oinfo, &lovset); |
| if (rc) |
| return rc; |
| |
| CDEBUG(D_INFO, "objid "DOSTID": %ux%u byte stripes\n", |
| POSTID(&oinfo->oi_md->lsm_oi), oinfo->oi_md->lsm_stripe_count, |
| oinfo->oi_md->lsm_stripe_size); |
| |
| list_for_each(pos, &lovset->set_list) { |
| req = list_entry(pos, struct lov_request, rq_link); |
| |
| CDEBUG(D_INFO, "objid "DOSTID"[%d] has subobj "DOSTID" at idx" |
| "%u\n", POSTID(&oinfo->oi_oa->o_oi), req->rq_stripe, |
| POSTID(&req->rq_oi.oi_oa->o_oi), req->rq_idx); |
| rc = obd_getattr_async(lov->lov_tgts[req->rq_idx]->ltd_exp, |
| &req->rq_oi, rqset); |
| if (rc) { |
| CERROR("%s: getattr objid "DOSTID" subobj" |
| DOSTID" on OST idx %d: rc = %d\n", |
| exp->exp_obd->obd_name, |
| POSTID(&oinfo->oi_oa->o_oi), |
| POSTID(&req->rq_oi.oi_oa->o_oi), |
| req->rq_idx, rc); |
| GOTO(out, rc); |
| } |
| } |
| |
| if (!list_empty(&rqset->set_requests)) { |
| LASSERT(rc == 0); |
| LASSERT(rqset->set_interpret == NULL); |
| rqset->set_interpret = lov_getattr_interpret; |
| rqset->set_arg = (void *)lovset; |
| return rc; |
| } |
| out: |
| if (rc) |
| atomic_set(&lovset->set_completes, 0); |
| err = lov_fini_getattr_set(lovset); |
| return rc ? rc : err; |
| } |
| |
| static int lov_setattr(const struct lu_env *env, struct obd_export *exp, |
| struct obd_info *oinfo, struct obd_trans_info *oti) |
| { |
| struct lov_request_set *set; |
| struct lov_obd *lov; |
| struct list_head *pos; |
| struct lov_request *req; |
| int err = 0, rc = 0; |
| |
| LASSERT(oinfo); |
| ASSERT_LSM_MAGIC(oinfo->oi_md); |
| |
| if (!exp || !exp->exp_obd) |
| return -ENODEV; |
| |
| /* for now, we only expect the following updates here */ |
| LASSERT(!(oinfo->oi_oa->o_valid & ~(OBD_MD_FLID | OBD_MD_FLTYPE | |
| OBD_MD_FLMODE | OBD_MD_FLATIME | |
| OBD_MD_FLMTIME | OBD_MD_FLCTIME | |
| OBD_MD_FLFLAGS | OBD_MD_FLSIZE | |
| OBD_MD_FLGROUP | OBD_MD_FLUID | |
| OBD_MD_FLGID | OBD_MD_FLFID | |
| OBD_MD_FLGENER))); |
| lov = &exp->exp_obd->u.lov; |
| rc = lov_prep_setattr_set(exp, oinfo, oti, &set); |
| if (rc) |
| return rc; |
| |
| list_for_each(pos, &set->set_list) { |
| req = list_entry(pos, struct lov_request, rq_link); |
| |
| rc = obd_setattr(env, lov->lov_tgts[req->rq_idx]->ltd_exp, |
| &req->rq_oi, NULL); |
| err = lov_update_setattr_set(set, req, rc); |
| if (err) { |
| CERROR("%s: setattr objid "DOSTID" subobj " |
| DOSTID" on OST idx %d: rc = %d\n", |
| exp->exp_obd->obd_name, |
| POSTID(&set->set_oi->oi_oa->o_oi), |
| POSTID(&req->rq_oi.oi_oa->o_oi), req->rq_idx, |
| err); |
| if (!rc) |
| rc = err; |
| } |
| } |
| err = lov_fini_setattr_set(set); |
| if (!rc) |
| rc = err; |
| return rc; |
| } |
| |
| static int lov_setattr_interpret(struct ptlrpc_request_set *rqset, |
| void *data, int rc) |
| { |
| struct lov_request_set *lovset = (struct lov_request_set *)data; |
| int err; |
| |
| if (rc) |
| atomic_set(&lovset->set_completes, 0); |
| err = lov_fini_setattr_set(lovset); |
| return rc ? rc : err; |
| } |
| |
| /* If @oti is given, the request goes from MDS and responses from OSTs are not |
| needed. Otherwise, a client is waiting for responses. */ |
| static int lov_setattr_async(struct obd_export *exp, struct obd_info *oinfo, |
| struct obd_trans_info *oti, |
| struct ptlrpc_request_set *rqset) |
| { |
| struct lov_request_set *set; |
| struct lov_request *req; |
| struct list_head *pos; |
| struct lov_obd *lov; |
| int rc = 0; |
| |
| LASSERT(oinfo); |
| ASSERT_LSM_MAGIC(oinfo->oi_md); |
| if (oinfo->oi_oa->o_valid & OBD_MD_FLCOOKIE) { |
| LASSERT(oti); |
| LASSERT(oti->oti_logcookies); |
| } |
| |
| if (!exp || !exp->exp_obd) |
| return -ENODEV; |
| |
| lov = &exp->exp_obd->u.lov; |
| rc = lov_prep_setattr_set(exp, oinfo, oti, &set); |
| if (rc) |
| return rc; |
| |
| CDEBUG(D_INFO, "objid "DOSTID": %ux%u byte stripes\n", |
| POSTID(&oinfo->oi_md->lsm_oi), |
| oinfo->oi_md->lsm_stripe_count, |
| oinfo->oi_md->lsm_stripe_size); |
| |
| list_for_each(pos, &set->set_list) { |
| req = list_entry(pos, struct lov_request, rq_link); |
| |
| if (oinfo->oi_oa->o_valid & OBD_MD_FLCOOKIE) |
| oti->oti_logcookies = set->set_cookies + req->rq_stripe; |
| |
| CDEBUG(D_INFO, "objid "DOSTID"[%d] has subobj "DOSTID" at idx" |
| "%u\n", POSTID(&oinfo->oi_oa->o_oi), req->rq_stripe, |
| POSTID(&req->rq_oi.oi_oa->o_oi), req->rq_idx); |
| |
| rc = obd_setattr_async(lov->lov_tgts[req->rq_idx]->ltd_exp, |
| &req->rq_oi, oti, rqset); |
| if (rc) { |
| CERROR("error: setattr objid "DOSTID" subobj" |
| DOSTID" on OST idx %d: rc = %d\n", |
| POSTID(&set->set_oi->oi_oa->o_oi), |
| POSTID(&req->rq_oi.oi_oa->o_oi), |
| req->rq_idx, rc); |
| break; |
| } |
| } |
| |
| /* If we are not waiting for responses on async requests, return. */ |
| if (rc || !rqset || list_empty(&rqset->set_requests)) { |
| int err; |
| if (rc) |
| atomic_set(&set->set_completes, 0); |
| err = lov_fini_setattr_set(set); |
| return rc ? rc : err; |
| } |
| |
| LASSERT(rqset->set_interpret == NULL); |
| rqset->set_interpret = lov_setattr_interpret; |
| rqset->set_arg = (void *)set; |
| |
| return 0; |
| } |
| |
| static int lov_punch_interpret(struct ptlrpc_request_set *rqset, |
| void *data, int rc) |
| { |
| struct lov_request_set *lovset = (struct lov_request_set *)data; |
| int err; |
| |
| if (rc) |
| atomic_set(&lovset->set_completes, 0); |
| err = lov_fini_punch_set(lovset); |
| return rc ? rc : err; |
| } |
| |
| /* FIXME: maybe we'll just make one node the authoritative attribute node, then |
| * we can send this 'punch' to just the authoritative node and the nodes |
| * that the punch will affect. */ |
| static int lov_punch(const struct lu_env *env, struct obd_export *exp, |
| struct obd_info *oinfo, struct obd_trans_info *oti, |
| struct ptlrpc_request_set *rqset) |
| { |
| struct lov_request_set *set; |
| struct lov_obd *lov; |
| struct list_head *pos; |
| struct lov_request *req; |
| int rc = 0; |
| |
| LASSERT(oinfo); |
| ASSERT_LSM_MAGIC(oinfo->oi_md); |
| |
| if (!exp || !exp->exp_obd) |
| return -ENODEV; |
| |
| lov = &exp->exp_obd->u.lov; |
| rc = lov_prep_punch_set(exp, oinfo, oti, &set); |
| if (rc) |
| return rc; |
| |
| list_for_each(pos, &set->set_list) { |
| req = list_entry(pos, struct lov_request, rq_link); |
| |
| rc = obd_punch(env, lov->lov_tgts[req->rq_idx]->ltd_exp, |
| &req->rq_oi, NULL, rqset); |
| if (rc) { |
| CERROR("%s: punch objid "DOSTID" subobj "DOSTID |
| " on OST idx %d: rc = %d\n", |
| exp->exp_obd->obd_name, |
| POSTID(&set->set_oi->oi_oa->o_oi), |
| POSTID(&req->rq_oi.oi_oa->o_oi), req->rq_idx, rc); |
| break; |
| } |
| } |
| |
| if (rc || list_empty(&rqset->set_requests)) { |
| int err; |
| err = lov_fini_punch_set(set); |
| return rc ? rc : err; |
| } |
| |
| LASSERT(rqset->set_interpret == NULL); |
| rqset->set_interpret = lov_punch_interpret; |
| rqset->set_arg = (void *)set; |
| |
| return 0; |
| } |
| |
| static int lov_sync_interpret(struct ptlrpc_request_set *rqset, |
| void *data, int rc) |
| { |
| struct lov_request_set *lovset = data; |
| int err; |
| |
| if (rc) |
| atomic_set(&lovset->set_completes, 0); |
| err = lov_fini_sync_set(lovset); |
| return rc ?: err; |
| } |
| |
| static int lov_sync(const struct lu_env *env, struct obd_export *exp, |
| struct obd_info *oinfo, obd_off start, obd_off end, |
| struct ptlrpc_request_set *rqset) |
| { |
| struct lov_request_set *set = NULL; |
| struct lov_obd *lov; |
| struct list_head *pos; |
| struct lov_request *req; |
| int rc = 0; |
| |
| ASSERT_LSM_MAGIC(oinfo->oi_md); |
| LASSERT(rqset != NULL); |
| |
| if (!exp->exp_obd) |
| return -ENODEV; |
| |
| lov = &exp->exp_obd->u.lov; |
| rc = lov_prep_sync_set(exp, oinfo, start, end, &set); |
| if (rc) |
| return rc; |
| |
| CDEBUG(D_INFO, "fsync objid "DOSTID" [%#llx, %#llx]\n", |
| POSTID(&set->set_oi->oi_oa->o_oi), start, end); |
| |
| list_for_each(pos, &set->set_list) { |
| req = list_entry(pos, struct lov_request, rq_link); |
| |
| rc = obd_sync(env, lov->lov_tgts[req->rq_idx]->ltd_exp, |
| &req->rq_oi, req->rq_oi.oi_policy.l_extent.start, |
| req->rq_oi.oi_policy.l_extent.end, rqset); |
| if (rc) { |
| CERROR("%s: fsync objid "DOSTID" subobj "DOSTID |
| " on OST idx %d: rc = %d\n", |
| exp->exp_obd->obd_name, |
| POSTID(&set->set_oi->oi_oa->o_oi), |
| POSTID(&req->rq_oi.oi_oa->o_oi), req->rq_idx, |
| rc); |
| break; |
| } |
| } |
| |
| /* If we are not waiting for responses on async requests, return. */ |
| if (rc || list_empty(&rqset->set_requests)) { |
| int err = lov_fini_sync_set(set); |
| |
| return rc ?: err; |
| } |
| |
| LASSERT(rqset->set_interpret == NULL); |
| rqset->set_interpret = lov_sync_interpret; |
| rqset->set_arg = (void *)set; |
| |
| return 0; |
| } |
| |
| static int lov_brw_check(struct lov_obd *lov, struct obd_info *lov_oinfo, |
| obd_count oa_bufs, struct brw_page *pga) |
| { |
| struct obd_info oinfo = { { { 0 } } }; |
| int i, rc = 0; |
| |
| oinfo.oi_oa = lov_oinfo->oi_oa; |
| |
| /* The caller just wants to know if there's a chance that this |
| * I/O can succeed */ |
| for (i = 0; i < oa_bufs; i++) { |
| int stripe = lov_stripe_number(lov_oinfo->oi_md, pga[i].off); |
| int ost = lov_oinfo->oi_md->lsm_oinfo[stripe]->loi_ost_idx; |
| obd_off start, end; |
| |
| if (!lov_stripe_intersects(lov_oinfo->oi_md, i, pga[i].off, |
| pga[i].off + pga[i].count - 1, |
| &start, &end)) |
| continue; |
| |
| if (!lov->lov_tgts[ost] || !lov->lov_tgts[ost]->ltd_active) { |
| CDEBUG(D_HA, "lov idx %d inactive\n", ost); |
| return -EIO; |
| } |
| |
| rc = obd_brw(OBD_BRW_CHECK, lov->lov_tgts[ost]->ltd_exp, &oinfo, |
| 1, &pga[i], NULL); |
| if (rc) |
| break; |
| } |
| return rc; |
| } |
| |
| static int lov_brw(int cmd, struct obd_export *exp, struct obd_info *oinfo, |
| obd_count oa_bufs, struct brw_page *pga, |
| struct obd_trans_info *oti) |
| { |
| struct lov_request_set *set; |
| struct lov_request *req; |
| struct list_head *pos; |
| struct lov_obd *lov = &exp->exp_obd->u.lov; |
| int err, rc = 0; |
| |
| ASSERT_LSM_MAGIC(oinfo->oi_md); |
| |
| if (cmd == OBD_BRW_CHECK) { |
| rc = lov_brw_check(lov, oinfo, oa_bufs, pga); |
| return rc; |
| } |
| |
| rc = lov_prep_brw_set(exp, oinfo, oa_bufs, pga, oti, &set); |
| if (rc) |
| return rc; |
| |
| list_for_each(pos, &set->set_list) { |
| struct obd_export *sub_exp; |
| struct brw_page *sub_pga; |
| req = list_entry(pos, struct lov_request, rq_link); |
| |
| sub_exp = lov->lov_tgts[req->rq_idx]->ltd_exp; |
| sub_pga = set->set_pga + req->rq_pgaidx; |
| rc = obd_brw(cmd, sub_exp, &req->rq_oi, req->rq_oabufs, |
| sub_pga, oti); |
| if (rc) |
| break; |
| lov_update_common_set(set, req, rc); |
| } |
| |
| err = lov_fini_brw_set(set); |
| if (!rc) |
| rc = err; |
| return rc; |
| } |
| |
| static int lov_enqueue_interpret(struct ptlrpc_request_set *rqset, |
| void *data, int rc) |
| { |
| struct lov_request_set *lovset = (struct lov_request_set *)data; |
| |
| rc = lov_fini_enqueue_set(lovset, lovset->set_ei->ei_mode, rc, rqset); |
| return rc; |
| } |
| |
| static int lov_enqueue(struct obd_export *exp, struct obd_info *oinfo, |
| struct ldlm_enqueue_info *einfo, |
| struct ptlrpc_request_set *rqset) |
| { |
| ldlm_mode_t mode = einfo->ei_mode; |
| struct lov_request_set *set; |
| struct lov_request *req; |
| struct list_head *pos; |
| struct lov_obd *lov; |
| ldlm_error_t rc; |
| |
| LASSERT(oinfo); |
| ASSERT_LSM_MAGIC(oinfo->oi_md); |
| LASSERT(mode == (mode & -mode)); |
| |
| /* we should never be asked to replay a lock this way. */ |
| LASSERT((oinfo->oi_flags & LDLM_FL_REPLAY) == 0); |
| |
| if (!exp || !exp->exp_obd) |
| return -ENODEV; |
| |
| lov = &exp->exp_obd->u.lov; |
| rc = lov_prep_enqueue_set(exp, oinfo, einfo, &set); |
| if (rc) |
| return rc; |
| |
| list_for_each(pos, &set->set_list) { |
| req = list_entry(pos, struct lov_request, rq_link); |
| |
| rc = obd_enqueue(lov->lov_tgts[req->rq_idx]->ltd_exp, |
| &req->rq_oi, einfo, rqset); |
| if (rc != ELDLM_OK) |
| GOTO(out, rc); |
| } |
| |
| if (rqset && !list_empty(&rqset->set_requests)) { |
| LASSERT(rc == 0); |
| LASSERT(rqset->set_interpret == NULL); |
| rqset->set_interpret = lov_enqueue_interpret; |
| rqset->set_arg = (void *)set; |
| return rc; |
| } |
| out: |
| rc = lov_fini_enqueue_set(set, mode, rc, rqset); |
| return rc; |
| } |
| |
| static int lov_change_cbdata(struct obd_export *exp, |
| struct lov_stripe_md *lsm, ldlm_iterator_t it, |
| void *data) |
| { |
| struct lov_obd *lov; |
| int rc = 0, i; |
| |
| ASSERT_LSM_MAGIC(lsm); |
| |
| if (!exp || !exp->exp_obd) |
| return -ENODEV; |
| |
| lov = &exp->exp_obd->u.lov; |
| for (i = 0; i < lsm->lsm_stripe_count; i++) { |
| struct lov_stripe_md submd; |
| struct lov_oinfo *loi = lsm->lsm_oinfo[i]; |
| |
| if (!lov->lov_tgts[loi->loi_ost_idx]) { |
| CDEBUG(D_HA, "lov idx %d NULL \n", loi->loi_ost_idx); |
| continue; |
| } |
| |
| submd.lsm_oi = loi->loi_oi; |
| submd.lsm_stripe_count = 0; |
| rc = obd_change_cbdata(lov->lov_tgts[loi->loi_ost_idx]->ltd_exp, |
| &submd, it, data); |
| } |
| return rc; |
| } |
| |
| /* find any ldlm lock of the inode in lov |
| * return 0 not find |
| * 1 find one |
| * < 0 error */ |
| static int lov_find_cbdata(struct obd_export *exp, |
| struct lov_stripe_md *lsm, ldlm_iterator_t it, |
| void *data) |
| { |
| struct lov_obd *lov; |
| int rc = 0, i; |
| |
| ASSERT_LSM_MAGIC(lsm); |
| |
| if (!exp || !exp->exp_obd) |
| return -ENODEV; |
| |
| lov = &exp->exp_obd->u.lov; |
| for (i = 0; i < lsm->lsm_stripe_count; i++) { |
| struct lov_stripe_md submd; |
| struct lov_oinfo *loi = lsm->lsm_oinfo[i]; |
| |
| if (!lov->lov_tgts[loi->loi_ost_idx]) { |
| CDEBUG(D_HA, "lov idx %d NULL \n", loi->loi_ost_idx); |
| continue; |
| } |
| submd.lsm_oi = loi->loi_oi; |
| submd.lsm_stripe_count = 0; |
| rc = obd_find_cbdata(lov->lov_tgts[loi->loi_ost_idx]->ltd_exp, |
| &submd, it, data); |
| if (rc != 0) |
| return rc; |
| } |
| return rc; |
| } |
| |
| static int lov_cancel(struct obd_export *exp, struct lov_stripe_md *lsm, |
| __u32 mode, struct lustre_handle *lockh) |
| { |
| struct lov_request_set *set; |
| struct obd_info oinfo; |
| struct lov_request *req; |
| struct list_head *pos; |
| struct lov_obd *lov; |
| struct lustre_handle *lov_lockhp; |
| int err = 0, rc = 0; |
| |
| ASSERT_LSM_MAGIC(lsm); |
| |
| if (!exp || !exp->exp_obd) |
| return -ENODEV; |
| |
| LASSERT(lockh); |
| lov = &exp->exp_obd->u.lov; |
| rc = lov_prep_cancel_set(exp, &oinfo, lsm, mode, lockh, &set); |
| if (rc) |
| return rc; |
| |
| list_for_each(pos, &set->set_list) { |
| req = list_entry(pos, struct lov_request, rq_link); |
| lov_lockhp = set->set_lockh->llh_handles + req->rq_stripe; |
| |
| rc = obd_cancel(lov->lov_tgts[req->rq_idx]->ltd_exp, |
| req->rq_oi.oi_md, mode, lov_lockhp); |
| rc = lov_update_common_set(set, req, rc); |
| if (rc) { |
| CERROR("%s: cancel objid "DOSTID" subobj " |
| DOSTID" on OST idx %d: rc = %d\n", |
| exp->exp_obd->obd_name, POSTID(&lsm->lsm_oi), |
| POSTID(&req->rq_oi.oi_md->lsm_oi), |
| req->rq_idx, rc); |
| err = rc; |
| } |
| |
| } |
| lov_fini_cancel_set(set); |
| return err; |
| } |
| |
| static int lov_cancel_unused(struct obd_export *exp, |
| struct lov_stripe_md *lsm, |
| ldlm_cancel_flags_t flags, void *opaque) |
| { |
| struct lov_obd *lov; |
| int rc = 0, i; |
| |
| if (!exp || !exp->exp_obd) |
| return -ENODEV; |
| |
| lov = &exp->exp_obd->u.lov; |
| if (lsm == NULL) { |
| for (i = 0; i < lov->desc.ld_tgt_count; i++) { |
| int err; |
| if (!lov->lov_tgts[i] || !lov->lov_tgts[i]->ltd_exp) |
| continue; |
| |
| err = obd_cancel_unused(lov->lov_tgts[i]->ltd_exp, NULL, |
| flags, opaque); |
| if (!rc) |
| rc = err; |
| } |
| return rc; |
| } |
| |
| ASSERT_LSM_MAGIC(lsm); |
| |
| for (i = 0; i < lsm->lsm_stripe_count; i++) { |
| struct lov_stripe_md submd; |
| struct lov_oinfo *loi = lsm->lsm_oinfo[i]; |
| int idx = loi->loi_ost_idx; |
| int err; |
| |
| if (!lov->lov_tgts[idx]) { |
| CDEBUG(D_HA, "lov idx %d NULL\n", idx); |
| continue; |
| } |
| |
| if (!lov->lov_tgts[idx]->ltd_active) |
| CDEBUG(D_HA, "lov idx %d inactive\n", idx); |
| |
| submd.lsm_oi = loi->loi_oi; |
| submd.lsm_stripe_count = 0; |
| err = obd_cancel_unused(lov->lov_tgts[idx]->ltd_exp, |
| &submd, flags, opaque); |
| if (err && lov->lov_tgts[idx]->ltd_active) { |
| CERROR("%s: cancel unused objid "DOSTID |
| " subobj "DOSTID" on OST idx %d: rc = %d\n", |
| exp->exp_obd->obd_name, POSTID(&lsm->lsm_oi), |
| POSTID(&loi->loi_oi), idx, err); |
| if (!rc) |
| rc = err; |
| } |
| } |
| return rc; |
| } |
| |
| int lov_statfs_interpret(struct ptlrpc_request_set *rqset, void *data, int rc) |
| { |
| struct lov_request_set *lovset = (struct lov_request_set *)data; |
| int err; |
| |
| if (rc) |
| atomic_set(&lovset->set_completes, 0); |
| |
| err = lov_fini_statfs_set(lovset); |
| return rc ? rc : err; |
| } |
| |
| static int lov_statfs_async(struct obd_export *exp, struct obd_info *oinfo, |
| __u64 max_age, struct ptlrpc_request_set *rqset) |
| { |
| struct obd_device *obd = class_exp2obd(exp); |
| struct lov_request_set *set; |
| struct lov_request *req; |
| struct list_head *pos; |
| struct lov_obd *lov; |
| int rc = 0; |
| |
| LASSERT(oinfo != NULL); |
| LASSERT(oinfo->oi_osfs != NULL); |
| |
| lov = &obd->u.lov; |
| rc = lov_prep_statfs_set(obd, oinfo, &set); |
| if (rc) |
| return rc; |
| |
| list_for_each(pos, &set->set_list) { |
| req = list_entry(pos, struct lov_request, rq_link); |
| rc = obd_statfs_async(lov->lov_tgts[req->rq_idx]->ltd_exp, |
| &req->rq_oi, max_age, rqset); |
| if (rc) |
| break; |
| } |
| |
| if (rc || list_empty(&rqset->set_requests)) { |
| int err; |
| if (rc) |
| atomic_set(&set->set_completes, 0); |
| err = lov_fini_statfs_set(set); |
| return rc ? rc : err; |
| } |
| |
| LASSERT(rqset->set_interpret == NULL); |
| rqset->set_interpret = lov_statfs_interpret; |
| rqset->set_arg = (void *)set; |
| return 0; |
| } |
| |
| static int lov_statfs(const struct lu_env *env, struct obd_export *exp, |
| struct obd_statfs *osfs, __u64 max_age, __u32 flags) |
| { |
| struct ptlrpc_request_set *set = NULL; |
| struct obd_info oinfo = { { { 0 } } }; |
| int rc = 0; |
| |
| /* for obdclass we forbid using obd_statfs_rqset, but prefer using async |
| * statfs requests */ |
| set = ptlrpc_prep_set(); |
| if (set == NULL) |
| return -ENOMEM; |
| |
| oinfo.oi_osfs = osfs; |
| oinfo.oi_flags = flags; |
| rc = lov_statfs_async(exp, &oinfo, max_age, set); |
| if (rc == 0) |
| rc = ptlrpc_set_wait(set); |
| ptlrpc_set_destroy(set); |
| |
| return rc; |
| } |
| |
| static int lov_iocontrol(unsigned int cmd, struct obd_export *exp, int len, |
| void *karg, void *uarg) |
| { |
| struct obd_device *obddev = class_exp2obd(exp); |
| struct lov_obd *lov = &obddev->u.lov; |
| int i = 0, rc = 0, count = lov->desc.ld_tgt_count; |
| struct obd_uuid *uuidp; |
| |
| switch (cmd) { |
| case IOC_OBD_STATFS: { |
| struct obd_ioctl_data *data = karg; |
| struct obd_device *osc_obd; |
| struct obd_statfs stat_buf = {0}; |
| __u32 index; |
| __u32 flags; |
| |
| memcpy(&index, data->ioc_inlbuf2, sizeof(__u32)); |
| if ((index >= count)) |
| return -ENODEV; |
| |
| if (!lov->lov_tgts[index]) |
| /* Try again with the next index */ |
| return -EAGAIN; |
| if (!lov->lov_tgts[index]->ltd_active) |
| return -ENODATA; |
| |
| osc_obd = class_exp2obd(lov->lov_tgts[index]->ltd_exp); |
| if (!osc_obd) |
| return -EINVAL; |
| |
| /* copy UUID */ |
| if (copy_to_user(data->ioc_pbuf2, obd2cli_tgt(osc_obd), |
| min((int) data->ioc_plen2, |
| (int) sizeof(struct obd_uuid)))) |
| return -EFAULT; |
| |
| flags = uarg ? *(__u32 *)uarg : 0; |
| /* got statfs data */ |
| rc = obd_statfs(NULL, lov->lov_tgts[index]->ltd_exp, &stat_buf, |
| cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS), |
| flags); |
| if (rc) |
| return rc; |
| if (copy_to_user(data->ioc_pbuf1, &stat_buf, |
| min((int) data->ioc_plen1, |
| (int) sizeof(stat_buf)))) |
| return -EFAULT; |
| break; |
| } |
| case OBD_IOC_LOV_GET_CONFIG: { |
| struct obd_ioctl_data *data; |
| struct lov_desc *desc; |
| char *buf = NULL; |
| __u32 *genp; |
| |
| len = 0; |
| if (obd_ioctl_getdata(&buf, &len, (void *)uarg)) |
| return -EINVAL; |
| |
| data = (struct obd_ioctl_data *)buf; |
| |
| if (sizeof(*desc) > data->ioc_inllen1) { |
| obd_ioctl_freedata(buf, len); |
| return -EINVAL; |
| } |
| |
| if (sizeof(uuidp->uuid) * count > data->ioc_inllen2) { |
| obd_ioctl_freedata(buf, len); |
| return -EINVAL; |
| } |
| |
| if (sizeof(__u32) * count > data->ioc_inllen3) { |
| obd_ioctl_freedata(buf, len); |
| return -EINVAL; |
| } |
| |
| desc = (struct lov_desc *)data->ioc_inlbuf1; |
| memcpy(desc, &(lov->desc), sizeof(*desc)); |
| |
| uuidp = (struct obd_uuid *)data->ioc_inlbuf2; |
| genp = (__u32 *)data->ioc_inlbuf3; |
| /* the uuid will be empty for deleted OSTs */ |
| for (i = 0; i < count; i++, uuidp++, genp++) { |
| if (!lov->lov_tgts[i]) |
| continue; |
| *uuidp = lov->lov_tgts[i]->ltd_uuid; |
| *genp = lov->lov_tgts[i]->ltd_gen; |
| } |
| |
| if (copy_to_user((void *)uarg, buf, len)) |
| rc = -EFAULT; |
| obd_ioctl_freedata(buf, len); |
| break; |
| } |
| case LL_IOC_LOV_SETSTRIPE: |
| rc = lov_setstripe(exp, len, karg, uarg); |
| break; |
| case LL_IOC_LOV_GETSTRIPE: |
| rc = lov_getstripe(exp, karg, uarg); |
| break; |
| case LL_IOC_LOV_SETEA: |
| rc = lov_setea(exp, karg, uarg); |
| break; |
| case OBD_IOC_QUOTACTL: { |
| struct if_quotactl *qctl = karg; |
| struct lov_tgt_desc *tgt = NULL; |
| struct obd_quotactl *oqctl; |
| |
| if (qctl->qc_valid == QC_OSTIDX) { |
| if (qctl->qc_idx < 0 || count <= qctl->qc_idx) |
| return -EINVAL; |
| |
| tgt = lov->lov_tgts[qctl->qc_idx]; |
| if (!tgt || !tgt->ltd_exp) |
| return -EINVAL; |
| } else if (qctl->qc_valid == QC_UUID) { |
| for (i = 0; i < count; i++) { |
| tgt = lov->lov_tgts[i]; |
| if (!tgt || |
| !obd_uuid_equals(&tgt->ltd_uuid, |
| &qctl->obd_uuid)) |
| continue; |
| |
| if (tgt->ltd_exp == NULL) |
| return -EINVAL; |
| |
| break; |
| } |
| } else { |
| return -EINVAL; |
| } |
| |
| if (i >= count) |
| return -EAGAIN; |
| |
| LASSERT(tgt && tgt->ltd_exp); |
| OBD_ALLOC_PTR(oqctl); |
| if (!oqctl) |
| return -ENOMEM; |
| |
| QCTL_COPY(oqctl, qctl); |
| rc = obd_quotactl(tgt->ltd_exp, oqctl); |
| if (rc == 0) { |
| QCTL_COPY(qctl, oqctl); |
| qctl->qc_valid = QC_OSTIDX; |
| qctl->obd_uuid = tgt->ltd_uuid; |
| } |
| OBD_FREE_PTR(oqctl); |
| break; |
| } |
| default: { |
| int set = 0; |
| |
| if (count == 0) |
| return -ENOTTY; |
| |
| for (i = 0; i < count; i++) { |
| int err; |
| struct obd_device *osc_obd; |
| |
| /* OST was disconnected */ |
| if (!lov->lov_tgts[i] || !lov->lov_tgts[i]->ltd_exp) |
| continue; |
| |
| /* ll_umount_begin() sets force flag but for lov, not |
| * osc. Let's pass it through */ |
| osc_obd = class_exp2obd(lov->lov_tgts[i]->ltd_exp); |
| osc_obd->obd_force = obddev->obd_force; |
| err = obd_iocontrol(cmd, lov->lov_tgts[i]->ltd_exp, |
| len, karg, uarg); |
| if (err == -ENODATA && cmd == OBD_IOC_POLL_QUOTACHECK) { |
| return err; |
| } else if (err) { |
| if (lov->lov_tgts[i]->ltd_active) { |
| CDEBUG(err == -ENOTTY ? |
| D_IOCTL : D_WARNING, |
| "iocontrol OSC %s on OST " |
| "idx %d cmd %x: err = %d\n", |
| lov_uuid2str(lov, i), |
| i, cmd, err); |
| if (!rc) |
| rc = err; |
| } |
| } else { |
| set = 1; |
| } |
| } |
| if (!set && !rc) |
| rc = -EIO; |
| } |
| } |
| |
| return rc; |
| } |
| |
| #define FIEMAP_BUFFER_SIZE 4096 |
| |
| /** |
| * Non-zero fe_logical indicates that this is a continuation FIEMAP |
| * call. The local end offset and the device are sent in the first |
| * fm_extent. This function calculates the stripe number from the index. |
| * This function returns a stripe_no on which mapping is to be restarted. |
| * |
| * This function returns fm_end_offset which is the in-OST offset at which |
| * mapping should be restarted. If fm_end_offset=0 is returned then caller |
| * will re-calculate proper offset in next stripe. |
| * Note that the first extent is passed to lov_get_info via the value field. |
| * |
| * \param fiemap fiemap request header |
| * \param lsm striping information for the file |
| * \param fm_start logical start of mapping |
| * \param fm_end logical end of mapping |
| * \param start_stripe starting stripe will be returned in this |
| */ |
| obd_size fiemap_calc_fm_end_offset(struct ll_user_fiemap *fiemap, |
| struct lov_stripe_md *lsm, obd_size fm_start, |
| obd_size fm_end, int *start_stripe) |
| { |
| obd_size local_end = fiemap->fm_extents[0].fe_logical; |
| obd_off lun_start, lun_end; |
| obd_size fm_end_offset; |
| int stripe_no = -1, i; |
| |
| if (fiemap->fm_extent_count == 0 || |
| fiemap->fm_extents[0].fe_logical == 0) |
| return 0; |
| |
| /* Find out stripe_no from ost_index saved in the fe_device */ |
| for (i = 0; i < lsm->lsm_stripe_count; i++) { |
| if (lsm->lsm_oinfo[i]->loi_ost_idx == |
| fiemap->fm_extents[0].fe_device) { |
| stripe_no = i; |
| break; |
| } |
| } |
| if (stripe_no == -1) |
| return -EINVAL; |
| |
| /* If we have finished mapping on previous device, shift logical |
| * offset to start of next device */ |
| if ((lov_stripe_intersects(lsm, stripe_no, fm_start, fm_end, |
| &lun_start, &lun_end)) != 0 && |
| local_end < lun_end) { |
| fm_end_offset = local_end; |
| *start_stripe = stripe_no; |
| } else { |
| /* This is a special value to indicate that caller should |
| * calculate offset in next stripe. */ |
| fm_end_offset = 0; |
| *start_stripe = (stripe_no + 1) % lsm->lsm_stripe_count; |
| } |
| |
| return fm_end_offset; |
| } |
| |
| /** |
| * We calculate on which OST the mapping will end. If the length of mapping |
| * is greater than (stripe_size * stripe_count) then the last_stripe will |
| * will be one just before start_stripe. Else we check if the mapping |
| * intersects each OST and find last_stripe. |
| * This function returns the last_stripe and also sets the stripe_count |
| * over which the mapping is spread |
| * |
| * \param lsm striping information for the file |
| * \param fm_start logical start of mapping |
| * \param fm_end logical end of mapping |
| * \param start_stripe starting stripe of the mapping |
| * \param stripe_count the number of stripes across which to map is returned |
| * |
| * \retval last_stripe return the last stripe of the mapping |
| */ |
| int fiemap_calc_last_stripe(struct lov_stripe_md *lsm, obd_size fm_start, |
| obd_size fm_end, int start_stripe, |
| int *stripe_count) |
| { |
| int last_stripe; |
| obd_off obd_start, obd_end; |
| int i, j; |
| |
| if (fm_end - fm_start > lsm->lsm_stripe_size * lsm->lsm_stripe_count) { |
| last_stripe = (start_stripe < 1 ? lsm->lsm_stripe_count - 1 : |
| start_stripe - 1); |
| *stripe_count = lsm->lsm_stripe_count; |
| } else { |
| for (j = 0, i = start_stripe; j < lsm->lsm_stripe_count; |
| i = (i + 1) % lsm->lsm_stripe_count, j++) { |
| if ((lov_stripe_intersects(lsm, i, fm_start, fm_end, |
| &obd_start, &obd_end)) == 0) |
| break; |
| } |
| *stripe_count = j; |
| last_stripe = (start_stripe + j - 1) %lsm->lsm_stripe_count; |
| } |
| |
| return last_stripe; |
| } |
| |
| /** |
| * Set fe_device and copy extents from local buffer into main return buffer. |
| * |
| * \param fiemap fiemap request header |
| * \param lcl_fm_ext array of local fiemap extents to be copied |
| * \param ost_index OST index to be written into the fm_device field for each |
| extent |
| * \param ext_count number of extents to be copied |
| * \param current_extent where to start copying in main extent array |
| */ |
| void fiemap_prepare_and_copy_exts(struct ll_user_fiemap *fiemap, |
| struct ll_fiemap_extent *lcl_fm_ext, |
| int ost_index, unsigned int ext_count, |
| int current_extent) |
| { |
| char *to; |
| int ext; |
| |
| for (ext = 0; ext < ext_count; ext++) { |
| lcl_fm_ext[ext].fe_device = ost_index; |
| lcl_fm_ext[ext].fe_flags |= FIEMAP_EXTENT_NET; |
| } |
| |
| /* Copy fm_extent's from fm_local to return buffer */ |
| to = (char *)fiemap + fiemap_count_to_size(current_extent); |
| memcpy(to, lcl_fm_ext, ext_count * sizeof(struct ll_fiemap_extent)); |
| } |
| |
| /** |
| * Break down the FIEMAP request and send appropriate calls to individual OSTs. |
| * This also handles the restarting of FIEMAP calls in case mapping overflows |
| * the available number of extents in single call. |
| */ |
| static int lov_fiemap(struct lov_obd *lov, __u32 keylen, void *key, |
| __u32 *vallen, void *val, struct lov_stripe_md *lsm) |
| { |
| struct ll_fiemap_info_key *fm_key = key; |
| struct ll_user_fiemap *fiemap = val; |
| struct ll_user_fiemap *fm_local = NULL; |
| struct ll_fiemap_extent *lcl_fm_ext; |
| int count_local; |
| unsigned int get_num_extents = 0; |
| int ost_index = 0, actual_start_stripe, start_stripe; |
| obd_size fm_start, fm_end, fm_length, fm_end_offset; |
| obd_size curr_loc; |
| int current_extent = 0, rc = 0, i; |
| int ost_eof = 0; /* EOF for object */ |
| int ost_done = 0; /* done with required mapping for this OST? */ |
| int last_stripe; |
| int cur_stripe = 0, cur_stripe_wrap = 0, stripe_count; |
| unsigned int buffer_size = FIEMAP_BUFFER_SIZE; |
| |
| if (!lsm_has_objects(lsm)) |
| GOTO(out, rc = 0); |
| |
| if (fiemap_count_to_size(fm_key->fiemap.fm_extent_count) < buffer_size) |
| buffer_size = fiemap_count_to_size(fm_key->fiemap.fm_extent_count); |
| |
| OBD_ALLOC_LARGE(fm_local, buffer_size); |
| if (fm_local == NULL) |
| GOTO(out, rc = -ENOMEM); |
| lcl_fm_ext = &fm_local->fm_extents[0]; |
| |
| count_local = fiemap_size_to_count(buffer_size); |
| |
| memcpy(fiemap, &fm_key->fiemap, sizeof(*fiemap)); |
| fm_start = fiemap->fm_start; |
| fm_length = fiemap->fm_length; |
| /* Calculate start stripe, last stripe and length of mapping */ |
| actual_start_stripe = start_stripe = lov_stripe_number(lsm, fm_start); |
| fm_end = (fm_length == ~0ULL ? fm_key->oa.o_size : |
| fm_start + fm_length - 1); |
| /* If fm_length != ~0ULL but fm_start+fm_length-1 exceeds file size */ |
| if (fm_end > fm_key->oa.o_size) |
| fm_end = fm_key->oa.o_size; |
| |
| last_stripe = fiemap_calc_last_stripe(lsm, fm_start, fm_end, |
| actual_start_stripe, &stripe_count); |
| |
| fm_end_offset = fiemap_calc_fm_end_offset(fiemap, lsm, fm_start, |
| fm_end, &start_stripe); |
| if (fm_end_offset == -EINVAL) |
| GOTO(out, rc = -EINVAL); |
| |
| if (fiemap_count_to_size(fiemap->fm_extent_count) > *vallen) |
| fiemap->fm_extent_count = fiemap_size_to_count(*vallen); |
| if (fiemap->fm_extent_count == 0) { |
| get_num_extents = 1; |
| count_local = 0; |
| } |
| /* Check each stripe */ |
| for (cur_stripe = start_stripe, i = 0; i < stripe_count; |
| i++, cur_stripe = (cur_stripe + 1) % lsm->lsm_stripe_count) { |
| obd_size req_fm_len; /* Stores length of required mapping */ |
| obd_size len_mapped_single_call; |
| obd_off lun_start, lun_end, obd_object_end; |
| unsigned int ext_count; |
| |
| cur_stripe_wrap = cur_stripe; |
| |
| /* Find out range of mapping on this stripe */ |
| if ((lov_stripe_intersects(lsm, cur_stripe, fm_start, fm_end, |
| &lun_start, &obd_object_end)) == 0) |
| continue; |
| |
| /* If this is a continuation FIEMAP call and we are on |
| * starting stripe then lun_start needs to be set to |
| * fm_end_offset */ |
| if (fm_end_offset != 0 && cur_stripe == start_stripe) |
| lun_start = fm_end_offset; |
| |
| if (fm_length != ~0ULL) { |
| /* Handle fm_start + fm_length overflow */ |
| if (fm_start + fm_length < fm_start) |
| fm_length = ~0ULL - fm_start; |
| lun_end = lov_size_to_stripe(lsm, fm_start + fm_length, |
| cur_stripe); |
| } else { |
| lun_end = ~0ULL; |
| } |
| |
| if (lun_start == lun_end) |
| continue; |
| |
| req_fm_len = obd_object_end - lun_start; |
| fm_local->fm_length = 0; |
| len_mapped_single_call = 0; |
| |
| /* If the output buffer is very large and the objects have many |
| * extents we may need to loop on a single OST repeatedly */ |
| ost_eof = 0; |
| ost_done = 0; |
| do { |
| if (get_num_extents == 0) { |
| /* Don't get too many extents. */ |
| if (current_extent + count_local > |
| fiemap->fm_extent_count) |
| count_local = fiemap->fm_extent_count - |
| current_extent; |
| } |
| |
| lun_start += len_mapped_single_call; |
| fm_local->fm_length = req_fm_len - len_mapped_single_call; |
| req_fm_len = fm_local->fm_length; |
| fm_local->fm_extent_count = count_local; |
| fm_local->fm_mapped_extents = 0; |
| fm_local->fm_flags = fiemap->fm_flags; |
| |
| fm_key->oa.o_oi = lsm->lsm_oinfo[cur_stripe]->loi_oi; |
| ost_index = lsm->lsm_oinfo[cur_stripe]->loi_ost_idx; |
| |
| if (ost_index < 0 || ost_index >=lov->desc.ld_tgt_count) |
| GOTO(out, rc = -EINVAL); |
| |
| /* If OST is inactive, return extent with UNKNOWN flag */ |
| if (!lov->lov_tgts[ost_index]->ltd_active) { |
| fm_local->fm_flags |= FIEMAP_EXTENT_LAST; |
| fm_local->fm_mapped_extents = 1; |
| |
| lcl_fm_ext[0].fe_logical = lun_start; |
| lcl_fm_ext[0].fe_length = obd_object_end - |
| lun_start; |
| lcl_fm_ext[0].fe_flags |= FIEMAP_EXTENT_UNKNOWN; |
| |
| goto inactive_tgt; |
| } |
| |
| fm_local->fm_start = lun_start; |
| fm_local->fm_flags &= ~FIEMAP_FLAG_DEVICE_ORDER; |
| memcpy(&fm_key->fiemap, fm_local, sizeof(*fm_local)); |
| *vallen=fiemap_count_to_size(fm_local->fm_extent_count); |
| rc = obd_get_info(NULL, |
| lov->lov_tgts[ost_index]->ltd_exp, |
| keylen, key, vallen, fm_local, lsm); |
| if (rc != 0) |
| GOTO(out, rc); |
| |
| inactive_tgt: |
| ext_count = fm_local->fm_mapped_extents; |
| if (ext_count == 0) { |
| ost_done = 1; |
| /* If last stripe has hole at the end, |
| * then we need to return */ |
| if (cur_stripe_wrap == last_stripe) { |
| fiemap->fm_mapped_extents = 0; |
| goto finish; |
| } |
| break; |
| } |
| |
| /* If we just need num of extents then go to next device */ |
| if (get_num_extents) { |
| current_extent += ext_count; |
| break; |
| } |
| |
| len_mapped_single_call = lcl_fm_ext[ext_count-1].fe_logical - |
| lun_start + lcl_fm_ext[ext_count - 1].fe_length; |
| |
| /* Have we finished mapping on this device? */ |
| if (req_fm_len <= len_mapped_single_call) |
| ost_done = 1; |
| |
| /* Clear the EXTENT_LAST flag which can be present on |
| * last extent */ |
| if (lcl_fm_ext[ext_count-1].fe_flags & FIEMAP_EXTENT_LAST) |
| lcl_fm_ext[ext_count - 1].fe_flags &= |
| ~FIEMAP_EXTENT_LAST; |
| |
| curr_loc = lov_stripe_size(lsm, |
| lcl_fm_ext[ext_count - 1].fe_logical+ |
| lcl_fm_ext[ext_count - 1].fe_length, |
| cur_stripe); |
| if (curr_loc >= fm_key->oa.o_size) |
| ost_eof = 1; |
| |
| fiemap_prepare_and_copy_exts(fiemap, lcl_fm_ext, |
| ost_index, ext_count, |
| current_extent); |
| |
| current_extent += ext_count; |
| |
| /* Ran out of available extents? */ |
| if (current_extent >= fiemap->fm_extent_count) |
| goto finish; |
| } while (ost_done == 0 && ost_eof == 0); |
| |
| if (cur_stripe_wrap == last_stripe) |
| goto finish; |
| } |
| |
| finish: |
| /* Indicate that we are returning device offsets unless file just has |
| * single stripe */ |
| if (lsm->lsm_stripe_count > 1) |
| fiemap->fm_flags |= FIEMAP_FLAG_DEVICE_ORDER; |
| |
| if (get_num_extents) |
| goto skip_last_device_calc; |
| |
| /* Check if we have reached the last stripe and whether mapping for that |
| * stripe is done. */ |
| if (cur_stripe_wrap == last_stripe) { |
| if (ost_done || ost_eof) |
| fiemap->fm_extents[current_extent - 1].fe_flags |= |
| FIEMAP_EXTENT_LAST; |
| } |
| |
| skip_last_device_calc: |
| fiemap->fm_mapped_extents = current_extent; |
| |
| out: |
| OBD_FREE_LARGE(fm_local, buffer_size); |
| return rc; |
| } |
| |
| static int lov_get_info(const struct lu_env *env, struct obd_export *exp, |
| __u32 keylen, void *key, __u32 *vallen, void *val, |
| struct lov_stripe_md *lsm) |
| { |
| struct obd_device *obddev = class_exp2obd(exp); |
| struct lov_obd *lov = &obddev->u.lov; |
| int i, rc; |
| |
| if (!vallen || !val) |
| return -EFAULT; |
| |
| obd_getref(obddev); |
| |
| if (KEY_IS(KEY_LOCK_TO_STRIPE)) { |
| struct { |
| char name[16]; |
| struct ldlm_lock *lock; |
| } *data = key; |
| struct ldlm_res_id *res_id = &data->lock->l_resource->lr_name; |
| struct lov_oinfo *loi; |
| __u32 *stripe = val; |
| |
| if (*vallen < sizeof(*stripe)) |
| GOTO(out, rc = -EFAULT); |
| *vallen = sizeof(*stripe); |
| |
| /* XXX This is another one of those bits that will need to |
| * change if we ever actually support nested LOVs. It uses |
| * the lock's export to find out which stripe it is. */ |
| /* XXX - it's assumed all the locks for deleted OSTs have |
| * been cancelled. Also, the export for deleted OSTs will |
| * be NULL and won't match the lock's export. */ |
| for (i = 0; i < lsm->lsm_stripe_count; i++) { |
| loi = lsm->lsm_oinfo[i]; |
| if (!lov->lov_tgts[loi->loi_ost_idx]) |
| continue; |
| if (lov->lov_tgts[loi->loi_ost_idx]->ltd_exp == |
| data->lock->l_conn_export && |
| ostid_res_name_eq(&loi->loi_oi, res_id)) { |
| *stripe = i; |
| GOTO(out, rc = 0); |
| } |
| } |
| LDLM_ERROR(data->lock, "lock on inode without such object"); |
| dump_lsm(D_ERROR, lsm); |
| GOTO(out, rc = -ENXIO); |
| } else if (KEY_IS(KEY_LAST_ID)) { |
| struct obd_id_info *info = val; |
| __u32 size = sizeof(obd_id); |
| struct lov_tgt_desc *tgt; |
| |
| LASSERT(*vallen == sizeof(struct obd_id_info)); |
| tgt = lov->lov_tgts[info->idx]; |
| |
| if (!tgt || !tgt->ltd_active) |
| GOTO(out, rc = -ESRCH); |
| |
| rc = obd_get_info(env, tgt->ltd_exp, keylen, key, |
| &size, info->data, NULL); |
| GOTO(out, rc = 0); |
| } else if (KEY_IS(KEY_LOVDESC)) { |
| struct lov_desc *desc_ret = val; |
| *desc_ret = lov->desc; |
| |
| GOTO(out, rc = 0); |
| } else if (KEY_IS(KEY_FIEMAP)) { |
| rc = lov_fiemap(lov, keylen, key, vallen, val, lsm); |
| GOTO(out, rc); |
| } else if (KEY_IS(KEY_CONNECT_FLAG)) { |
| struct lov_tgt_desc *tgt; |
| __u64 ost_idx = *((__u64 *)val); |
| |
| LASSERT(*vallen == sizeof(__u64)); |
| LASSERT(ost_idx < lov->desc.ld_tgt_count); |
| tgt = lov->lov_tgts[ost_idx]; |
| |
| if (!tgt || !tgt->ltd_exp) |
| GOTO(out, rc = -ESRCH); |
| |
| *((__u64 *)val) = exp_connect_flags(tgt->ltd_exp); |
| GOTO(out, rc = 0); |
| } else if (KEY_IS(KEY_TGT_COUNT)) { |
| *((int *)val) = lov->desc.ld_tgt_count; |
| GOTO(out, rc = 0); |
| } |
| |
| rc = -EINVAL; |
| |
| out: |
| obd_putref(obddev); |
| return rc; |
| } |
| |
| static int lov_set_info_async(const struct lu_env *env, struct obd_export *exp, |
| obd_count keylen, void *key, obd_count vallen, |
| void *val, struct ptlrpc_request_set *set) |
| { |
| struct obd_device *obddev = class_exp2obd(exp); |
| struct lov_obd *lov = &obddev->u.lov; |
| obd_count count; |
| int i, rc = 0, err; |
| struct lov_tgt_desc *tgt; |
| unsigned incr, check_uuid, |
| do_inactive, no_set; |
| unsigned next_id = 0, mds_con = 0, capa = 0; |
| |
| incr = check_uuid = do_inactive = no_set = 0; |
| if (set == NULL) { |
| no_set = 1; |
| set = ptlrpc_prep_set(); |
| if (!set) |
| return -ENOMEM; |
| } |
| |
| obd_getref(obddev); |
| count = lov->desc.ld_tgt_count; |
| |
| if (KEY_IS(KEY_NEXT_ID)) { |
| count = vallen / sizeof(struct obd_id_info); |
| vallen = sizeof(obd_id); |
| incr = sizeof(struct obd_id_info); |
| do_inactive = 1; |
| next_id = 1; |
| } else if (KEY_IS(KEY_CHECKSUM)) { |
| do_inactive = 1; |
| } else if (KEY_IS(KEY_EVICT_BY_NID)) { |
| /* use defaults: do_inactive = incr = 0; */ |
| } else if (KEY_IS(KEY_MDS_CONN)) { |
| mds_con = 1; |
| } else if (KEY_IS(KEY_CAPA_KEY)) { |
| capa = 1; |
| } else if (KEY_IS(KEY_CACHE_SET)) { |
| LASSERT(lov->lov_cache == NULL); |
| lov->lov_cache = val; |
| do_inactive = 1; |
| } |
| |
| for (i = 0; i < count; i++, val = (char *)val + incr) { |
| if (next_id) { |
| tgt = lov->lov_tgts[((struct obd_id_info *)val)->idx]; |
| } else { |
| tgt = lov->lov_tgts[i]; |
| } |
| /* OST was disconnected */ |
| if (!tgt || !tgt->ltd_exp) |
| continue; |
| |
| /* OST is inactive and we don't want inactive OSCs */ |
| if (!tgt->ltd_active && !do_inactive) |
| continue; |
| |
| if (mds_con) { |
| struct mds_group_info *mgi; |
| |
| LASSERT(vallen == sizeof(*mgi)); |
| mgi = (struct mds_group_info *)val; |
| |
| /* Only want a specific OSC */ |
| if (mgi->uuid && !obd_uuid_equals(mgi->uuid, |
| &tgt->ltd_uuid)) |
| continue; |
| |
| err = obd_set_info_async(env, tgt->ltd_exp, |
| keylen, key, sizeof(int), |
| &mgi->group, set); |
| } else if (next_id) { |
| err = obd_set_info_async(env, tgt->ltd_exp, |
| keylen, key, vallen, |
| ((struct obd_id_info *)val)->data, set); |
| } else if (capa) { |
| struct mds_capa_info *info = (struct mds_capa_info *)val; |
| |
| LASSERT(vallen == sizeof(*info)); |
| |
| /* Only want a specific OSC */ |
| if (info->uuid && |
| !obd_uuid_equals(info->uuid, &tgt->ltd_uuid)) |
| continue; |
| |
| err = obd_set_info_async(env, tgt->ltd_exp, keylen, |
| key, sizeof(*info->capa), |
| info->capa, set); |
| } else { |
| /* Only want a specific OSC */ |
| if (check_uuid && |
| !obd_uuid_equals(val, &tgt->ltd_uuid)) |
| continue; |
| |
| err = obd_set_info_async(env, tgt->ltd_exp, |
| keylen, key, vallen, val, set); |
| } |
| |
| if (!rc) |
| rc = err; |
| } |
| |
| obd_putref(obddev); |
| if (no_set) { |
| err = ptlrpc_set_wait(set); |
| if (!rc) |
| rc = err; |
| ptlrpc_set_destroy(set); |
| } |
| return rc; |
| } |
| |
| static int lov_extent_calc(struct obd_export *exp, struct lov_stripe_md *lsm, |
| int cmd, __u64 *offset) |
| { |
| __u32 ssize = lsm->lsm_stripe_size; |
| __u64 start; |
| |
| start = *offset; |
| lov_do_div64(start, ssize); |
| start = start * ssize; |
| |
| CDEBUG(D_DLMTRACE, "offset %llu, stripe %u, start %llu, end %llu\n", |
| *offset, ssize, start, start + ssize - 1); |
| if (cmd == OBD_CALC_STRIPE_END) { |
| *offset = start + ssize - 1; |
| } else if (cmd == OBD_CALC_STRIPE_START) { |
| *offset = start; |
| } else { |
| LBUG(); |
| } |
| |
| return 0; |
| } |
| |
| void lov_stripe_lock(struct lov_stripe_md *md) |
| { |
| LASSERT(md->lsm_lock_owner != current_pid()); |
| spin_lock(&md->lsm_lock); |
| LASSERT(md->lsm_lock_owner == 0); |
| md->lsm_lock_owner = current_pid(); |
| } |
| EXPORT_SYMBOL(lov_stripe_lock); |
| |
| void lov_stripe_unlock(struct lov_stripe_md *md) |
| { |
| LASSERT(md->lsm_lock_owner == current_pid()); |
| md->lsm_lock_owner = 0; |
| spin_unlock(&md->lsm_lock); |
| } |
| EXPORT_SYMBOL(lov_stripe_unlock); |
| |
| static int lov_quotactl(struct obd_device *obd, struct obd_export *exp, |
| struct obd_quotactl *oqctl) |
| { |
| struct lov_obd *lov = &obd->u.lov; |
| struct lov_tgt_desc *tgt; |
| __u64 curspace = 0; |
| __u64 bhardlimit = 0; |
| int i, rc = 0; |
| |
| if (oqctl->qc_cmd != LUSTRE_Q_QUOTAON && |
| oqctl->qc_cmd != LUSTRE_Q_QUOTAOFF && |
| oqctl->qc_cmd != Q_GETOQUOTA && |
| oqctl->qc_cmd != Q_INITQUOTA && |
| oqctl->qc_cmd != LUSTRE_Q_SETQUOTA && |
| oqctl->qc_cmd != Q_FINVALIDATE) { |
| CERROR("bad quota opc %x for lov obd", oqctl->qc_cmd); |
| return -EFAULT; |
| } |
| |
| /* for lov tgt */ |
| obd_getref(obd); |
| for (i = 0; i < lov->desc.ld_tgt_count; i++) { |
| int err; |
| |
| tgt = lov->lov_tgts[i]; |
| |
| if (!tgt) |
| continue; |
| |
| if (!tgt->ltd_active || tgt->ltd_reap) { |
| if (oqctl->qc_cmd == Q_GETOQUOTA && |
| lov->lov_tgts[i]->ltd_activate) { |
| rc = -EREMOTEIO; |
| CERROR("ost %d is inactive\n", i); |
| } else { |
| CDEBUG(D_HA, "ost %d is inactive\n", i); |
| } |
| continue; |
| } |
| |
| err = obd_quotactl(tgt->ltd_exp, oqctl); |
| if (err) { |
| if (tgt->ltd_active && !rc) |
| rc = err; |
| continue; |
| } |
| |
| if (oqctl->qc_cmd == Q_GETOQUOTA) { |
| curspace += oqctl->qc_dqblk.dqb_curspace; |
| bhardlimit += oqctl->qc_dqblk.dqb_bhardlimit; |
| } |
| } |
| obd_putref(obd); |
| |
| if (oqctl->qc_cmd == Q_GETOQUOTA) { |
| oqctl->qc_dqblk.dqb_curspace = curspace; |
| oqctl->qc_dqblk.dqb_bhardlimit = bhardlimit; |
| } |
| return rc; |
| } |
| |
| static int lov_quotacheck(struct obd_device *obd, struct obd_export *exp, |
| struct obd_quotactl *oqctl) |
| { |
| struct lov_obd *lov = &obd->u.lov; |
| int i, rc = 0; |
| |
| obd_getref(obd); |
| |
| for (i = 0; i < lov->desc.ld_tgt_count; i++) { |
| if (!lov->lov_tgts[i]) |
| continue; |
| |
| /* Skip quota check on the administratively disabled OSTs. */ |
| if (!lov->lov_tgts[i]->ltd_activate) { |
| CWARN("lov idx %d was administratively disabled, " |
| "skip quotacheck on it.\n", i); |
| continue; |
| } |
| |
| if (!lov->lov_tgts[i]->ltd_active) { |
| CERROR("lov idx %d inactive\n", i); |
| rc = -EIO; |
| goto out; |
| } |
| } |
| |
| for (i = 0; i < lov->desc.ld_tgt_count; i++) { |
| int err; |
| |
| if (!lov->lov_tgts[i] || !lov->lov_tgts[i]->ltd_activate) |
| continue; |
| |
| err = obd_quotacheck(lov->lov_tgts[i]->ltd_exp, oqctl); |
| if (err && !rc) |
| rc = err; |
| } |
| |
| out: |
| obd_putref(obd); |
| |
| return rc; |
| } |
| |
| struct obd_ops lov_obd_ops = { |
| .o_owner = THIS_MODULE, |
| .o_setup = lov_setup, |
| .o_precleanup = lov_precleanup, |
| .o_cleanup = lov_cleanup, |
| /*.o_process_config = lov_process_config,*/ |
| .o_connect = lov_connect, |
| .o_disconnect = lov_disconnect, |
| .o_statfs = lov_statfs, |
| .o_statfs_async = lov_statfs_async, |
| .o_packmd = lov_packmd, |
| .o_unpackmd = lov_unpackmd, |
| .o_create = lov_create, |
| .o_destroy = lov_destroy, |
| .o_getattr = lov_getattr, |
| .o_getattr_async = lov_getattr_async, |
| .o_setattr = lov_setattr, |
| .o_setattr_async = lov_setattr_async, |
| .o_brw = lov_brw, |
| .o_merge_lvb = lov_merge_lvb, |
| .o_adjust_kms = lov_adjust_kms, |
| .o_punch = lov_punch, |
| .o_sync = lov_sync, |
| .o_enqueue = lov_enqueue, |
| .o_change_cbdata = lov_change_cbdata, |
| .o_find_cbdata = lov_find_cbdata, |
| .o_cancel = lov_cancel, |
| .o_cancel_unused = lov_cancel_unused, |
| .o_iocontrol = lov_iocontrol, |
| .o_get_info = lov_get_info, |
| .o_set_info_async = lov_set_info_async, |
| .o_extent_calc = lov_extent_calc, |
| .o_notify = lov_notify, |
| .o_pool_new = lov_pool_new, |
| .o_pool_rem = lov_pool_remove, |
| .o_pool_add = lov_pool_add, |
| .o_pool_del = lov_pool_del, |
| .o_getref = lov_getref, |
| .o_putref = lov_putref, |
| .o_quotactl = lov_quotactl, |
| .o_quotacheck = lov_quotacheck, |
| }; |
| |
| struct kmem_cache *lov_oinfo_slab; |
| |
| int __init lov_init(void) |
| { |
| struct lprocfs_static_vars lvars = { NULL }; |
| int rc; |
| |
| /* print an address of _any_ initialized kernel symbol from this |
| * module, to allow debugging with gdb that doesn't support data |
| * symbols from modules.*/ |
| CDEBUG(D_INFO, "Lustre LOV module (%p).\n", &lov_caches); |
| |
| rc = lu_kmem_init(lov_caches); |
| if (rc) |
| return rc; |
| |
| lov_oinfo_slab = kmem_cache_create("lov_oinfo", |
| sizeof(struct lov_oinfo), |
| 0, SLAB_HWCACHE_ALIGN, NULL); |
| if (lov_oinfo_slab == NULL) { |
| lu_kmem_fini(lov_caches); |
| return -ENOMEM; |
| } |
| lprocfs_lov_init_vars(&lvars); |
| |
| rc = class_register_type(&lov_obd_ops, NULL, lvars.module_vars, |
| LUSTRE_LOV_NAME, &lov_device_type); |
| |
| if (rc) { |
| kmem_cache_destroy(lov_oinfo_slab); |
| lu_kmem_fini(lov_caches); |
| } |
| |
| return rc; |
| } |
| |
| static void /*__exit*/ lov_exit(void) |
| { |
| class_unregister_type(LUSTRE_LOV_NAME); |
| kmem_cache_destroy(lov_oinfo_slab); |
| |
| lu_kmem_fini(lov_caches); |
| } |
| |
| MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>"); |
| MODULE_DESCRIPTION("Lustre Logical Object Volume OBD driver"); |
| MODULE_LICENSE("GPL"); |
| MODULE_VERSION(LUSTRE_VERSION_STRING); |
| |
| module_init(lov_init); |
| module_exit(lov_exit); |