2792 lines
68 KiB
C
2792 lines
68 KiB
C
/*
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* GPL HEADER START
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*
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 only,
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* as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License version 2 for more details (a copy is included
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* in the LICENSE file that accompanied this code).
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*
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* You should have received a copy of the GNU General Public License
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* version 2 along with this program; If not, see
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* http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
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*
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* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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* CA 95054 USA or visit www.sun.com if you need additional information or
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* have any questions.
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*
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* GPL HEADER END
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*/
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/*
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* Copyright (c) 2004, 2010, Oracle and/or its affiliates. All rights reserved.
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* Use is subject to license terms.
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*
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* Copyright (c) 2011, 2015, Intel Corporation.
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*/
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/*
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* This file is part of Lustre, http://www.lustre.org/
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* Lustre is a trademark of Sun Microsystems, Inc.
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*/
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#define DEBUG_SUBSYSTEM S_LMV
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#include <linux/slab.h>
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/pagemap.h>
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#include <linux/mm.h>
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#include <asm/div64.h>
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#include <linux/seq_file.h>
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#include <linux/namei.h>
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#include <linux/uaccess.h>
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#include "../include/lustre/lustre_idl.h"
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#include "../include/obd_support.h"
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#include "../include/lustre_lib.h"
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#include "../include/lustre_net.h"
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#include "../include/obd_class.h"
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#include "../include/lprocfs_status.h"
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#include "../include/lustre_lite.h"
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#include "../include/lustre_fid.h"
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#include "../include/lustre_kernelcomm.h"
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#include "lmv_internal.h"
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static void lmv_activate_target(struct lmv_obd *lmv,
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struct lmv_tgt_desc *tgt,
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int activate)
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{
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if (tgt->ltd_active == activate)
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return;
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tgt->ltd_active = activate;
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lmv->desc.ld_active_tgt_count += (activate ? 1 : -1);
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}
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/**
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* Error codes:
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*
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* -EINVAL : UUID can't be found in the LMV's target list
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* -ENOTCONN: The UUID is found, but the target connection is bad (!)
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* -EBADF : The UUID is found, but the OBD of the wrong type (!)
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*/
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static int lmv_set_mdc_active(struct lmv_obd *lmv, struct obd_uuid *uuid,
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int activate)
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{
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struct lmv_tgt_desc *uninitialized_var(tgt);
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struct obd_device *obd;
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int i;
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int rc = 0;
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CDEBUG(D_INFO, "Searching in lmv %p for uuid %s (activate=%d)\n",
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lmv, uuid->uuid, activate);
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spin_lock(&lmv->lmv_lock);
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for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
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tgt = lmv->tgts[i];
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if (!tgt || !tgt->ltd_exp)
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continue;
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CDEBUG(D_INFO, "Target idx %d is %s conn %#llx\n", i,
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tgt->ltd_uuid.uuid, tgt->ltd_exp->exp_handle.h_cookie);
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if (obd_uuid_equals(uuid, &tgt->ltd_uuid))
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break;
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}
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if (i == lmv->desc.ld_tgt_count) {
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rc = -EINVAL;
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goto out_lmv_lock;
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}
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obd = class_exp2obd(tgt->ltd_exp);
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if (!obd) {
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rc = -ENOTCONN;
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goto out_lmv_lock;
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}
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CDEBUG(D_INFO, "Found OBD %s=%s device %d (%p) type %s at LMV idx %d\n",
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obd->obd_name, obd->obd_uuid.uuid, obd->obd_minor, obd,
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obd->obd_type->typ_name, i);
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LASSERT(strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) == 0);
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if (tgt->ltd_active == activate) {
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CDEBUG(D_INFO, "OBD %p already %sactive!\n", obd,
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activate ? "" : "in");
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goto out_lmv_lock;
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}
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CDEBUG(D_INFO, "Marking OBD %p %sactive\n", obd,
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activate ? "" : "in");
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lmv_activate_target(lmv, tgt, activate);
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out_lmv_lock:
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spin_unlock(&lmv->lmv_lock);
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return rc;
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}
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static struct obd_uuid *lmv_get_uuid(struct obd_export *exp)
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{
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struct lmv_obd *lmv = &exp->exp_obd->u.lmv;
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return obd_get_uuid(lmv->tgts[0]->ltd_exp);
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}
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static int lmv_notify(struct obd_device *obd, struct obd_device *watched,
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enum obd_notify_event ev, void *data)
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{
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struct obd_connect_data *conn_data;
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struct lmv_obd *lmv = &obd->u.lmv;
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struct obd_uuid *uuid;
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int rc = 0;
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if (strcmp(watched->obd_type->typ_name, LUSTRE_MDC_NAME)) {
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CERROR("unexpected notification of %s %s!\n",
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watched->obd_type->typ_name,
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watched->obd_name);
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return -EINVAL;
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}
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uuid = &watched->u.cli.cl_target_uuid;
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if (ev == OBD_NOTIFY_ACTIVE || ev == OBD_NOTIFY_INACTIVE) {
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/*
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* Set MDC as active before notifying the observer, so the
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* observer can use the MDC normally.
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*/
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rc = lmv_set_mdc_active(lmv, uuid,
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ev == OBD_NOTIFY_ACTIVE);
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if (rc) {
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CERROR("%sactivation of %s failed: %d\n",
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ev == OBD_NOTIFY_ACTIVE ? "" : "de",
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uuid->uuid, rc);
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return rc;
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}
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} else if (ev == OBD_NOTIFY_OCD) {
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conn_data = &watched->u.cli.cl_import->imp_connect_data;
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/*
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* XXX: Make sure that ocd_connect_flags from all targets are
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* the same. Otherwise one of MDTs runs wrong version or
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* something like this. --umka
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*/
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obd->obd_self_export->exp_connect_data = *conn_data;
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}
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#if 0
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else if (ev == OBD_NOTIFY_DISCON) {
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/*
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* For disconnect event, flush fld cache for failout MDS case.
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*/
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fld_client_flush(&lmv->lmv_fld);
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}
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#endif
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/*
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* Pass the notification up the chain.
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*/
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if (obd->obd_observer)
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rc = obd_notify(obd->obd_observer, watched, ev, data);
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return rc;
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}
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/**
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* This is fake connect function. Its purpose is to initialize lmv and say
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* caller that everything is okay. Real connection will be performed later.
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*/
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static int lmv_connect(const struct lu_env *env,
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struct obd_export **exp, struct obd_device *obd,
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struct obd_uuid *cluuid, struct obd_connect_data *data,
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void *localdata)
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{
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struct lmv_obd *lmv = &obd->u.lmv;
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struct lustre_handle conn = { 0 };
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int rc = 0;
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/*
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* We don't want to actually do the underlying connections more than
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* once, so keep track.
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*/
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lmv->refcount++;
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if (lmv->refcount > 1) {
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*exp = NULL;
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return 0;
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}
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rc = class_connect(&conn, obd, cluuid);
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if (rc) {
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CERROR("class_connection() returned %d\n", rc);
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return rc;
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}
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*exp = class_conn2export(&conn);
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class_export_get(*exp);
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lmv->exp = *exp;
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lmv->connected = 0;
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lmv->cluuid = *cluuid;
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if (data)
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lmv->conn_data = *data;
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lmv->lmv_tgts_kobj = kobject_create_and_add("target_obds",
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&obd->obd_kobj);
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/*
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* All real clients should perform actual connection right away, because
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* it is possible, that LMV will not have opportunity to connect targets
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* and MDC stuff will be called directly, for instance while reading
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* ../mdc/../kbytesfree procfs file, etc.
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*/
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if (data && data->ocd_connect_flags & OBD_CONNECT_REAL)
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rc = lmv_check_connect(obd);
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if (rc && lmv->lmv_tgts_kobj)
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kobject_put(lmv->lmv_tgts_kobj);
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return rc;
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}
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static void lmv_set_timeouts(struct obd_device *obd)
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{
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struct lmv_tgt_desc *tgt;
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struct lmv_obd *lmv;
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int i;
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lmv = &obd->u.lmv;
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if (lmv->server_timeout == 0)
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return;
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if (lmv->connected == 0)
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return;
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for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
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tgt = lmv->tgts[i];
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if (!tgt || !tgt->ltd_exp || tgt->ltd_active == 0)
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continue;
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obd_set_info_async(NULL, tgt->ltd_exp, sizeof(KEY_INTERMDS),
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KEY_INTERMDS, 0, NULL, NULL);
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}
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}
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static int lmv_init_ea_size(struct obd_export *exp, int easize,
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int def_easize, int cookiesize, int def_cookiesize)
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{
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struct obd_device *obd = exp->exp_obd;
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struct lmv_obd *lmv = &obd->u.lmv;
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int i;
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int rc = 0;
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int change = 0;
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if (lmv->max_easize < easize) {
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lmv->max_easize = easize;
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change = 1;
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}
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if (lmv->max_def_easize < def_easize) {
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lmv->max_def_easize = def_easize;
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change = 1;
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}
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if (lmv->max_cookiesize < cookiesize) {
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lmv->max_cookiesize = cookiesize;
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change = 1;
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}
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if (lmv->max_def_cookiesize < def_cookiesize) {
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lmv->max_def_cookiesize = def_cookiesize;
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change = 1;
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}
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if (change == 0)
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return 0;
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if (lmv->connected == 0)
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return 0;
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for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
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if (!lmv->tgts[i] || !lmv->tgts[i]->ltd_exp ||
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lmv->tgts[i]->ltd_active == 0) {
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CWARN("%s: NULL export for %d\n", obd->obd_name, i);
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continue;
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}
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rc = md_init_ea_size(lmv->tgts[i]->ltd_exp, easize, def_easize,
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cookiesize, def_cookiesize);
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if (rc) {
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CERROR("%s: obd_init_ea_size() failed on MDT target %d: rc = %d\n",
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obd->obd_name, i, rc);
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break;
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}
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}
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return rc;
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}
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#define MAX_STRING_SIZE 128
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static int lmv_connect_mdc(struct obd_device *obd, struct lmv_tgt_desc *tgt)
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{
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struct lmv_obd *lmv = &obd->u.lmv;
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struct obd_uuid *cluuid = &lmv->cluuid;
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struct obd_uuid lmv_mdc_uuid = { "LMV_MDC_UUID" };
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struct obd_device *mdc_obd;
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struct obd_export *mdc_exp;
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struct lu_fld_target target;
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int rc;
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mdc_obd = class_find_client_obd(&tgt->ltd_uuid, LUSTRE_MDC_NAME,
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&obd->obd_uuid);
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if (!mdc_obd) {
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CERROR("target %s not attached\n", tgt->ltd_uuid.uuid);
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return -EINVAL;
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}
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CDEBUG(D_CONFIG, "connect to %s(%s) - %s, %s FOR %s\n",
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mdc_obd->obd_name, mdc_obd->obd_uuid.uuid,
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tgt->ltd_uuid.uuid, obd->obd_uuid.uuid, cluuid->uuid);
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if (!mdc_obd->obd_set_up) {
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CERROR("target %s is not set up\n", tgt->ltd_uuid.uuid);
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return -EINVAL;
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}
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rc = obd_connect(NULL, &mdc_exp, mdc_obd, &lmv_mdc_uuid,
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&lmv->conn_data, NULL);
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if (rc) {
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CERROR("target %s connect error %d\n", tgt->ltd_uuid.uuid, rc);
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return rc;
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}
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/*
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* Init fid sequence client for this mdc and add new fld target.
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*/
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rc = obd_fid_init(mdc_obd, mdc_exp, LUSTRE_SEQ_METADATA);
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if (rc)
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return rc;
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target.ft_srv = NULL;
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target.ft_exp = mdc_exp;
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target.ft_idx = tgt->ltd_idx;
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fld_client_add_target(&lmv->lmv_fld, &target);
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rc = obd_register_observer(mdc_obd, obd);
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if (rc) {
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obd_disconnect(mdc_exp);
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CERROR("target %s register_observer error %d\n",
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tgt->ltd_uuid.uuid, rc);
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return rc;
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}
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if (obd->obd_observer) {
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/*
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* Tell the observer about the new target.
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*/
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rc = obd_notify(obd->obd_observer, mdc_exp->exp_obd,
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OBD_NOTIFY_ACTIVE,
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(void *)(tgt - lmv->tgts[0]));
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if (rc) {
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obd_disconnect(mdc_exp);
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return rc;
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}
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}
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tgt->ltd_active = 1;
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tgt->ltd_exp = mdc_exp;
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lmv->desc.ld_active_tgt_count++;
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md_init_ea_size(tgt->ltd_exp, lmv->max_easize, lmv->max_def_easize,
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lmv->max_cookiesize, lmv->max_def_cookiesize);
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CDEBUG(D_CONFIG, "Connected to %s(%s) successfully (%d)\n",
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mdc_obd->obd_name, mdc_obd->obd_uuid.uuid,
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atomic_read(&obd->obd_refcount));
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if (lmv->lmv_tgts_kobj)
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/* Even if we failed to create the link, that's fine */
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rc = sysfs_create_link(lmv->lmv_tgts_kobj, &mdc_obd->obd_kobj,
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mdc_obd->obd_name);
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return 0;
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}
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static void lmv_del_target(struct lmv_obd *lmv, int index)
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{
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if (!lmv->tgts[index])
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return;
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kfree(lmv->tgts[index]);
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lmv->tgts[index] = NULL;
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return;
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}
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static int lmv_add_target(struct obd_device *obd, struct obd_uuid *uuidp,
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__u32 index, int gen)
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{
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struct lmv_obd *lmv = &obd->u.lmv;
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struct lmv_tgt_desc *tgt;
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int rc = 0;
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CDEBUG(D_CONFIG, "Target uuid: %s. index %d\n", uuidp->uuid, index);
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lmv_init_lock(lmv);
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if (lmv->desc.ld_tgt_count == 0) {
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struct obd_device *mdc_obd;
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mdc_obd = class_find_client_obd(uuidp, LUSTRE_MDC_NAME,
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&obd->obd_uuid);
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if (!mdc_obd) {
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lmv_init_unlock(lmv);
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CERROR("%s: Target %s not attached: rc = %d\n",
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obd->obd_name, uuidp->uuid, -EINVAL);
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return -EINVAL;
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}
|
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}
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|
|
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if ((index < lmv->tgts_size) && lmv->tgts[index]) {
|
|
tgt = lmv->tgts[index];
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CERROR("%s: UUID %s already assigned at LOV target index %d: rc = %d\n",
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obd->obd_name,
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obd_uuid2str(&tgt->ltd_uuid), index, -EEXIST);
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lmv_init_unlock(lmv);
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return -EEXIST;
|
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}
|
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|
|
if (index >= lmv->tgts_size) {
|
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/* We need to reallocate the lmv target array. */
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struct lmv_tgt_desc **newtgts, **old = NULL;
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__u32 newsize = 1;
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__u32 oldsize = 0;
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|
|
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while (newsize < index + 1)
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newsize <<= 1;
|
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newtgts = kcalloc(newsize, sizeof(*newtgts), GFP_NOFS);
|
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if (!newtgts) {
|
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lmv_init_unlock(lmv);
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return -ENOMEM;
|
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}
|
|
|
|
if (lmv->tgts_size) {
|
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memcpy(newtgts, lmv->tgts,
|
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sizeof(*newtgts) * lmv->tgts_size);
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old = lmv->tgts;
|
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oldsize = lmv->tgts_size;
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}
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|
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lmv->tgts = newtgts;
|
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lmv->tgts_size = newsize;
|
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smp_rmb();
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kfree(old);
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CDEBUG(D_CONFIG, "tgts: %p size: %d\n", lmv->tgts,
|
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lmv->tgts_size);
|
|
}
|
|
|
|
tgt = kzalloc(sizeof(*tgt), GFP_NOFS);
|
|
if (!tgt) {
|
|
lmv_init_unlock(lmv);
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return -ENOMEM;
|
|
}
|
|
|
|
mutex_init(&tgt->ltd_fid_mutex);
|
|
tgt->ltd_idx = index;
|
|
tgt->ltd_uuid = *uuidp;
|
|
tgt->ltd_active = 0;
|
|
lmv->tgts[index] = tgt;
|
|
if (index >= lmv->desc.ld_tgt_count)
|
|
lmv->desc.ld_tgt_count = index + 1;
|
|
|
|
if (lmv->connected) {
|
|
rc = lmv_connect_mdc(obd, tgt);
|
|
if (rc) {
|
|
spin_lock(&lmv->lmv_lock);
|
|
lmv->desc.ld_tgt_count--;
|
|
memset(tgt, 0, sizeof(*tgt));
|
|
spin_unlock(&lmv->lmv_lock);
|
|
} else {
|
|
int easize = sizeof(struct lmv_stripe_md) +
|
|
lmv->desc.ld_tgt_count * sizeof(struct lu_fid);
|
|
lmv_init_ea_size(obd->obd_self_export, easize, 0, 0, 0);
|
|
}
|
|
}
|
|
|
|
lmv_init_unlock(lmv);
|
|
return rc;
|
|
}
|
|
|
|
int lmv_check_connect(struct obd_device *obd)
|
|
{
|
|
struct lmv_obd *lmv = &obd->u.lmv;
|
|
struct lmv_tgt_desc *tgt;
|
|
int i;
|
|
int rc;
|
|
int easize;
|
|
|
|
if (lmv->connected)
|
|
return 0;
|
|
|
|
lmv_init_lock(lmv);
|
|
if (lmv->connected) {
|
|
lmv_init_unlock(lmv);
|
|
return 0;
|
|
}
|
|
|
|
if (lmv->desc.ld_tgt_count == 0) {
|
|
lmv_init_unlock(lmv);
|
|
CERROR("%s: no targets configured.\n", obd->obd_name);
|
|
return -EINVAL;
|
|
}
|
|
|
|
CDEBUG(D_CONFIG, "Time to connect %s to %s\n",
|
|
lmv->cluuid.uuid, obd->obd_name);
|
|
|
|
for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
|
|
tgt = lmv->tgts[i];
|
|
if (!tgt)
|
|
continue;
|
|
rc = lmv_connect_mdc(obd, tgt);
|
|
if (rc)
|
|
goto out_disc;
|
|
}
|
|
|
|
lmv_set_timeouts(obd);
|
|
class_export_put(lmv->exp);
|
|
lmv->connected = 1;
|
|
easize = lmv_get_easize(lmv);
|
|
lmv_init_ea_size(obd->obd_self_export, easize, 0, 0, 0);
|
|
lmv_init_unlock(lmv);
|
|
return 0;
|
|
|
|
out_disc:
|
|
while (i-- > 0) {
|
|
int rc2;
|
|
|
|
tgt = lmv->tgts[i];
|
|
if (!tgt)
|
|
continue;
|
|
tgt->ltd_active = 0;
|
|
if (tgt->ltd_exp) {
|
|
--lmv->desc.ld_active_tgt_count;
|
|
rc2 = obd_disconnect(tgt->ltd_exp);
|
|
if (rc2) {
|
|
CERROR("LMV target %s disconnect on MDC idx %d: error %d\n",
|
|
tgt->ltd_uuid.uuid, i, rc2);
|
|
}
|
|
}
|
|
}
|
|
class_disconnect(lmv->exp);
|
|
lmv_init_unlock(lmv);
|
|
return rc;
|
|
}
|
|
|
|
static int lmv_disconnect_mdc(struct obd_device *obd, struct lmv_tgt_desc *tgt)
|
|
{
|
|
struct lmv_obd *lmv = &obd->u.lmv;
|
|
struct obd_device *mdc_obd;
|
|
int rc;
|
|
|
|
mdc_obd = class_exp2obd(tgt->ltd_exp);
|
|
|
|
if (mdc_obd) {
|
|
mdc_obd->obd_force = obd->obd_force;
|
|
mdc_obd->obd_fail = obd->obd_fail;
|
|
mdc_obd->obd_no_recov = obd->obd_no_recov;
|
|
|
|
if (lmv->lmv_tgts_kobj)
|
|
sysfs_remove_link(lmv->lmv_tgts_kobj,
|
|
mdc_obd->obd_name);
|
|
}
|
|
|
|
rc = obd_fid_fini(tgt->ltd_exp->exp_obd);
|
|
if (rc)
|
|
CERROR("Can't finalize fids factory\n");
|
|
|
|
CDEBUG(D_INFO, "Disconnected from %s(%s) successfully\n",
|
|
tgt->ltd_exp->exp_obd->obd_name,
|
|
tgt->ltd_exp->exp_obd->obd_uuid.uuid);
|
|
|
|
obd_register_observer(tgt->ltd_exp->exp_obd, NULL);
|
|
rc = obd_disconnect(tgt->ltd_exp);
|
|
if (rc) {
|
|
if (tgt->ltd_active) {
|
|
CERROR("Target %s disconnect error %d\n",
|
|
tgt->ltd_uuid.uuid, rc);
|
|
}
|
|
}
|
|
|
|
lmv_activate_target(lmv, tgt, 0);
|
|
tgt->ltd_exp = NULL;
|
|
return 0;
|
|
}
|
|
|
|
static int lmv_disconnect(struct obd_export *exp)
|
|
{
|
|
struct obd_device *obd = class_exp2obd(exp);
|
|
struct lmv_obd *lmv = &obd->u.lmv;
|
|
int rc;
|
|
int i;
|
|
|
|
if (!lmv->tgts)
|
|
goto out_local;
|
|
|
|
/*
|
|
* Only disconnect the underlying layers on the final disconnect.
|
|
*/
|
|
lmv->refcount--;
|
|
if (lmv->refcount != 0)
|
|
goto out_local;
|
|
|
|
for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
|
|
if (!lmv->tgts[i] || !lmv->tgts[i]->ltd_exp)
|
|
continue;
|
|
|
|
lmv_disconnect_mdc(obd, lmv->tgts[i]);
|
|
}
|
|
|
|
if (lmv->lmv_tgts_kobj)
|
|
kobject_put(lmv->lmv_tgts_kobj);
|
|
|
|
out_local:
|
|
/*
|
|
* This is the case when no real connection is established by
|
|
* lmv_check_connect().
|
|
*/
|
|
if (!lmv->connected)
|
|
class_export_put(exp);
|
|
rc = class_disconnect(exp);
|
|
if (lmv->refcount == 0)
|
|
lmv->connected = 0;
|
|
return rc;
|
|
}
|
|
|
|
static int lmv_fid2path(struct obd_export *exp, int len, void *karg,
|
|
void __user *uarg)
|
|
{
|
|
struct obd_device *obddev = class_exp2obd(exp);
|
|
struct lmv_obd *lmv = &obddev->u.lmv;
|
|
struct getinfo_fid2path *gf;
|
|
struct lmv_tgt_desc *tgt;
|
|
struct getinfo_fid2path *remote_gf = NULL;
|
|
int remote_gf_size = 0;
|
|
int rc;
|
|
|
|
gf = (struct getinfo_fid2path *)karg;
|
|
tgt = lmv_find_target(lmv, &gf->gf_fid);
|
|
if (IS_ERR(tgt))
|
|
return PTR_ERR(tgt);
|
|
|
|
repeat_fid2path:
|
|
rc = obd_iocontrol(OBD_IOC_FID2PATH, tgt->ltd_exp, len, gf, uarg);
|
|
if (rc != 0 && rc != -EREMOTE)
|
|
goto out_fid2path;
|
|
|
|
/* If remote_gf != NULL, it means just building the
|
|
* path on the remote MDT, copy this path segment to gf
|
|
*/
|
|
if (remote_gf) {
|
|
struct getinfo_fid2path *ori_gf;
|
|
char *ptr;
|
|
|
|
ori_gf = (struct getinfo_fid2path *)karg;
|
|
if (strlen(ori_gf->gf_path) +
|
|
strlen(gf->gf_path) > ori_gf->gf_pathlen) {
|
|
rc = -EOVERFLOW;
|
|
goto out_fid2path;
|
|
}
|
|
|
|
ptr = ori_gf->gf_path;
|
|
|
|
memmove(ptr + strlen(gf->gf_path) + 1, ptr,
|
|
strlen(ori_gf->gf_path));
|
|
|
|
strncpy(ptr, gf->gf_path, strlen(gf->gf_path));
|
|
ptr += strlen(gf->gf_path);
|
|
*ptr = '/';
|
|
}
|
|
|
|
CDEBUG(D_INFO, "%s: get path %s "DFID" rec: %llu ln: %u\n",
|
|
tgt->ltd_exp->exp_obd->obd_name,
|
|
gf->gf_path, PFID(&gf->gf_fid), gf->gf_recno,
|
|
gf->gf_linkno);
|
|
|
|
if (rc == 0)
|
|
goto out_fid2path;
|
|
|
|
/* sigh, has to go to another MDT to do path building further */
|
|
if (!remote_gf) {
|
|
remote_gf_size = sizeof(*remote_gf) + PATH_MAX;
|
|
remote_gf = kzalloc(remote_gf_size, GFP_NOFS);
|
|
if (!remote_gf) {
|
|
rc = -ENOMEM;
|
|
goto out_fid2path;
|
|
}
|
|
remote_gf->gf_pathlen = PATH_MAX;
|
|
}
|
|
|
|
if (!fid_is_sane(&gf->gf_fid)) {
|
|
CERROR("%s: invalid FID "DFID": rc = %d\n",
|
|
tgt->ltd_exp->exp_obd->obd_name,
|
|
PFID(&gf->gf_fid), -EINVAL);
|
|
rc = -EINVAL;
|
|
goto out_fid2path;
|
|
}
|
|
|
|
tgt = lmv_find_target(lmv, &gf->gf_fid);
|
|
if (IS_ERR(tgt)) {
|
|
rc = -EINVAL;
|
|
goto out_fid2path;
|
|
}
|
|
|
|
remote_gf->gf_fid = gf->gf_fid;
|
|
remote_gf->gf_recno = -1;
|
|
remote_gf->gf_linkno = -1;
|
|
memset(remote_gf->gf_path, 0, remote_gf->gf_pathlen);
|
|
gf = remote_gf;
|
|
goto repeat_fid2path;
|
|
|
|
out_fid2path:
|
|
kfree(remote_gf);
|
|
return rc;
|
|
}
|
|
|
|
static int lmv_hsm_req_count(struct lmv_obd *lmv,
|
|
const struct hsm_user_request *hur,
|
|
const struct lmv_tgt_desc *tgt_mds)
|
|
{
|
|
int i, nr = 0;
|
|
struct lmv_tgt_desc *curr_tgt;
|
|
|
|
/* count how many requests must be sent to the given target */
|
|
for (i = 0; i < hur->hur_request.hr_itemcount; i++) {
|
|
curr_tgt = lmv_find_target(lmv, &hur->hur_user_item[i].hui_fid);
|
|
if (obd_uuid_equals(&curr_tgt->ltd_uuid, &tgt_mds->ltd_uuid))
|
|
nr++;
|
|
}
|
|
return nr;
|
|
}
|
|
|
|
static void lmv_hsm_req_build(struct lmv_obd *lmv,
|
|
struct hsm_user_request *hur_in,
|
|
const struct lmv_tgt_desc *tgt_mds,
|
|
struct hsm_user_request *hur_out)
|
|
{
|
|
int i, nr_out;
|
|
struct lmv_tgt_desc *curr_tgt;
|
|
|
|
/* build the hsm_user_request for the given target */
|
|
hur_out->hur_request = hur_in->hur_request;
|
|
nr_out = 0;
|
|
for (i = 0; i < hur_in->hur_request.hr_itemcount; i++) {
|
|
curr_tgt = lmv_find_target(lmv,
|
|
&hur_in->hur_user_item[i].hui_fid);
|
|
if (obd_uuid_equals(&curr_tgt->ltd_uuid, &tgt_mds->ltd_uuid)) {
|
|
hur_out->hur_user_item[nr_out] =
|
|
hur_in->hur_user_item[i];
|
|
nr_out++;
|
|
}
|
|
}
|
|
hur_out->hur_request.hr_itemcount = nr_out;
|
|
memcpy(hur_data(hur_out), hur_data(hur_in),
|
|
hur_in->hur_request.hr_data_len);
|
|
}
|
|
|
|
static int lmv_hsm_ct_unregister(struct lmv_obd *lmv, unsigned int cmd, int len,
|
|
struct lustre_kernelcomm *lk,
|
|
void __user *uarg)
|
|
{
|
|
int rc = 0;
|
|
__u32 i;
|
|
|
|
/* unregister request (call from llapi_hsm_copytool_fini) */
|
|
for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
|
|
/* best effort: try to clean as much as possible
|
|
* (continue on error)
|
|
*/
|
|
obd_iocontrol(cmd, lmv->tgts[i]->ltd_exp, len, lk, uarg);
|
|
}
|
|
|
|
/* Whatever the result, remove copytool from kuc groups.
|
|
* Unreached coordinators will get EPIPE on next requests
|
|
* and will unregister automatically.
|
|
*/
|
|
rc = libcfs_kkuc_group_rem(lk->lk_uid, lk->lk_group);
|
|
|
|
return rc;
|
|
}
|
|
|
|
static int lmv_hsm_ct_register(struct lmv_obd *lmv, unsigned int cmd, int len,
|
|
struct lustre_kernelcomm *lk, void __user *uarg)
|
|
{
|
|
struct file *filp;
|
|
__u32 i, j;
|
|
int err, rc = 0;
|
|
bool any_set = false;
|
|
struct kkuc_ct_data kcd = { 0 };
|
|
|
|
/* All or nothing: try to register to all MDS.
|
|
* In case of failure, unregister from previous MDS,
|
|
* except if it because of inactive target.
|
|
*/
|
|
for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
|
|
err = obd_iocontrol(cmd, lmv->tgts[i]->ltd_exp, len, lk, uarg);
|
|
if (err) {
|
|
if (lmv->tgts[i]->ltd_active) {
|
|
/* permanent error */
|
|
CERROR("error: iocontrol MDC %s on MDTidx %d cmd %x: err = %d\n",
|
|
lmv->tgts[i]->ltd_uuid.uuid,
|
|
i, cmd, err);
|
|
rc = err;
|
|
lk->lk_flags |= LK_FLG_STOP;
|
|
/* unregister from previous MDS */
|
|
for (j = 0; j < i; j++)
|
|
obd_iocontrol(cmd,
|
|
lmv->tgts[j]->ltd_exp,
|
|
len, lk, uarg);
|
|
return rc;
|
|
}
|
|
/* else: transient error.
|
|
* kuc will register to the missing MDT when it is back
|
|
*/
|
|
} else {
|
|
any_set = true;
|
|
}
|
|
}
|
|
|
|
if (!any_set)
|
|
/* no registration done: return error */
|
|
return -ENOTCONN;
|
|
|
|
/* at least one registration done, with no failure */
|
|
filp = fget(lk->lk_wfd);
|
|
if (!filp)
|
|
return -EBADF;
|
|
|
|
kcd.kcd_magic = KKUC_CT_DATA_MAGIC;
|
|
kcd.kcd_uuid = lmv->cluuid;
|
|
kcd.kcd_archive = lk->lk_data;
|
|
|
|
rc = libcfs_kkuc_group_add(filp, lk->lk_uid, lk->lk_group,
|
|
&kcd, sizeof(kcd));
|
|
if (rc) {
|
|
if (filp)
|
|
fput(filp);
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
|
|
static int lmv_iocontrol(unsigned int cmd, struct obd_export *exp,
|
|
int len, void *karg, void __user *uarg)
|
|
{
|
|
struct obd_device *obddev = class_exp2obd(exp);
|
|
struct lmv_obd *lmv = &obddev->u.lmv;
|
|
int i = 0;
|
|
int rc = 0;
|
|
int set = 0;
|
|
int count = lmv->desc.ld_tgt_count;
|
|
|
|
if (count == 0)
|
|
return -ENOTTY;
|
|
|
|
switch (cmd) {
|
|
case IOC_OBD_STATFS: {
|
|
struct obd_ioctl_data *data = karg;
|
|
struct obd_device *mdc_obd;
|
|
struct obd_statfs stat_buf = {0};
|
|
__u32 index;
|
|
|
|
memcpy(&index, data->ioc_inlbuf2, sizeof(__u32));
|
|
if (index >= count)
|
|
return -ENODEV;
|
|
|
|
if (!lmv->tgts[index] || lmv->tgts[index]->ltd_active == 0)
|
|
return -ENODATA;
|
|
|
|
mdc_obd = class_exp2obd(lmv->tgts[index]->ltd_exp);
|
|
if (!mdc_obd)
|
|
return -EINVAL;
|
|
|
|
/* copy UUID */
|
|
if (copy_to_user(data->ioc_pbuf2, obd2cli_tgt(mdc_obd),
|
|
min((int)data->ioc_plen2,
|
|
(int)sizeof(struct obd_uuid))))
|
|
return -EFAULT;
|
|
|
|
rc = obd_statfs(NULL, lmv->tgts[index]->ltd_exp, &stat_buf,
|
|
cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
|
|
0);
|
|
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_QUOTACTL: {
|
|
struct if_quotactl *qctl = karg;
|
|
struct lmv_tgt_desc *tgt = NULL;
|
|
struct obd_quotactl *oqctl;
|
|
|
|
if (qctl->qc_valid == QC_MDTIDX) {
|
|
if (qctl->qc_idx < 0 || count <= qctl->qc_idx)
|
|
return -EINVAL;
|
|
|
|
tgt = lmv->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 = lmv->tgts[i];
|
|
if (!tgt)
|
|
continue;
|
|
if (!obd_uuid_equals(&tgt->ltd_uuid,
|
|
&qctl->obd_uuid))
|
|
continue;
|
|
|
|
if (!tgt->ltd_exp)
|
|
return -EINVAL;
|
|
|
|
break;
|
|
}
|
|
} else {
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (i >= count)
|
|
return -EAGAIN;
|
|
|
|
LASSERT(tgt && tgt->ltd_exp);
|
|
oqctl = kzalloc(sizeof(*oqctl), GFP_NOFS);
|
|
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_MDTIDX;
|
|
qctl->obd_uuid = tgt->ltd_uuid;
|
|
}
|
|
kfree(oqctl);
|
|
break;
|
|
}
|
|
case OBD_IOC_CHANGELOG_SEND:
|
|
case OBD_IOC_CHANGELOG_CLEAR: {
|
|
struct ioc_changelog *icc = karg;
|
|
|
|
if (icc->icc_mdtindex >= count)
|
|
return -ENODEV;
|
|
|
|
if (!lmv->tgts[icc->icc_mdtindex] ||
|
|
!lmv->tgts[icc->icc_mdtindex]->ltd_exp ||
|
|
lmv->tgts[icc->icc_mdtindex]->ltd_active == 0)
|
|
return -ENODEV;
|
|
rc = obd_iocontrol(cmd, lmv->tgts[icc->icc_mdtindex]->ltd_exp,
|
|
sizeof(*icc), icc, NULL);
|
|
break;
|
|
}
|
|
case LL_IOC_GET_CONNECT_FLAGS: {
|
|
if (!lmv->tgts[0])
|
|
return -ENODATA;
|
|
rc = obd_iocontrol(cmd, lmv->tgts[0]->ltd_exp, len, karg, uarg);
|
|
break;
|
|
}
|
|
case OBD_IOC_FID2PATH: {
|
|
rc = lmv_fid2path(exp, len, karg, uarg);
|
|
break;
|
|
}
|
|
case LL_IOC_HSM_STATE_GET:
|
|
case LL_IOC_HSM_STATE_SET:
|
|
case LL_IOC_HSM_ACTION: {
|
|
struct md_op_data *op_data = karg;
|
|
struct lmv_tgt_desc *tgt;
|
|
|
|
tgt = lmv_find_target(lmv, &op_data->op_fid1);
|
|
if (IS_ERR(tgt))
|
|
return PTR_ERR(tgt);
|
|
|
|
if (!tgt->ltd_exp)
|
|
return -EINVAL;
|
|
|
|
rc = obd_iocontrol(cmd, tgt->ltd_exp, len, karg, uarg);
|
|
break;
|
|
}
|
|
case LL_IOC_HSM_PROGRESS: {
|
|
const struct hsm_progress_kernel *hpk = karg;
|
|
struct lmv_tgt_desc *tgt;
|
|
|
|
tgt = lmv_find_target(lmv, &hpk->hpk_fid);
|
|
if (IS_ERR(tgt))
|
|
return PTR_ERR(tgt);
|
|
rc = obd_iocontrol(cmd, tgt->ltd_exp, len, karg, uarg);
|
|
break;
|
|
}
|
|
case LL_IOC_HSM_REQUEST: {
|
|
struct hsm_user_request *hur = karg;
|
|
struct lmv_tgt_desc *tgt;
|
|
unsigned int reqcount = hur->hur_request.hr_itemcount;
|
|
|
|
if (reqcount == 0)
|
|
return 0;
|
|
|
|
/* if the request is about a single fid
|
|
* or if there is a single MDS, no need to split
|
|
* the request.
|
|
*/
|
|
if (reqcount == 1 || count == 1) {
|
|
tgt = lmv_find_target(lmv,
|
|
&hur->hur_user_item[0].hui_fid);
|
|
if (IS_ERR(tgt))
|
|
return PTR_ERR(tgt);
|
|
rc = obd_iocontrol(cmd, tgt->ltd_exp, len, karg, uarg);
|
|
} else {
|
|
/* split fid list to their respective MDS */
|
|
for (i = 0; i < count; i++) {
|
|
unsigned int nr, reqlen;
|
|
int rc1;
|
|
struct hsm_user_request *req;
|
|
|
|
nr = lmv_hsm_req_count(lmv, hur, lmv->tgts[i]);
|
|
if (nr == 0) /* nothing for this MDS */
|
|
continue;
|
|
|
|
/* build a request with fids for this MDS */
|
|
reqlen = offsetof(typeof(*hur),
|
|
hur_user_item[nr])
|
|
+ hur->hur_request.hr_data_len;
|
|
req = libcfs_kvzalloc(reqlen, GFP_NOFS);
|
|
if (!req)
|
|
return -ENOMEM;
|
|
|
|
lmv_hsm_req_build(lmv, hur, lmv->tgts[i], req);
|
|
|
|
rc1 = obd_iocontrol(cmd, lmv->tgts[i]->ltd_exp,
|
|
reqlen, req, uarg);
|
|
if (rc1 != 0 && rc == 0)
|
|
rc = rc1;
|
|
kvfree(req);
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
case LL_IOC_LOV_SWAP_LAYOUTS: {
|
|
struct md_op_data *op_data = karg;
|
|
struct lmv_tgt_desc *tgt1, *tgt2;
|
|
|
|
tgt1 = lmv_find_target(lmv, &op_data->op_fid1);
|
|
if (IS_ERR(tgt1))
|
|
return PTR_ERR(tgt1);
|
|
|
|
tgt2 = lmv_find_target(lmv, &op_data->op_fid2);
|
|
if (IS_ERR(tgt2))
|
|
return PTR_ERR(tgt2);
|
|
|
|
if (!tgt1->ltd_exp || !tgt2->ltd_exp)
|
|
return -EINVAL;
|
|
|
|
/* only files on same MDT can have their layouts swapped */
|
|
if (tgt1->ltd_idx != tgt2->ltd_idx)
|
|
return -EPERM;
|
|
|
|
rc = obd_iocontrol(cmd, tgt1->ltd_exp, len, karg, uarg);
|
|
break;
|
|
}
|
|
case LL_IOC_HSM_CT_START: {
|
|
struct lustre_kernelcomm *lk = karg;
|
|
|
|
if (lk->lk_flags & LK_FLG_STOP)
|
|
rc = lmv_hsm_ct_unregister(lmv, cmd, len, lk, uarg);
|
|
else
|
|
rc = lmv_hsm_ct_register(lmv, cmd, len, lk, uarg);
|
|
break;
|
|
}
|
|
default:
|
|
for (i = 0; i < count; i++) {
|
|
struct obd_device *mdc_obd;
|
|
int err;
|
|
|
|
if (!lmv->tgts[i] || !lmv->tgts[i]->ltd_exp)
|
|
continue;
|
|
/* ll_umount_begin() sets force flag but for lmv, not
|
|
* mdc. Let's pass it through
|
|
*/
|
|
mdc_obd = class_exp2obd(lmv->tgts[i]->ltd_exp);
|
|
mdc_obd->obd_force = obddev->obd_force;
|
|
err = obd_iocontrol(cmd, lmv->tgts[i]->ltd_exp, len,
|
|
karg, uarg);
|
|
if (err == -ENODATA && cmd == OBD_IOC_POLL_QUOTACHECK) {
|
|
return err;
|
|
} else if (err) {
|
|
if (lmv->tgts[i]->ltd_active) {
|
|
CERROR("error: iocontrol MDC %s on MDTidx %d cmd %x: err = %d\n",
|
|
lmv->tgts[i]->ltd_uuid.uuid,
|
|
i, cmd, err);
|
|
if (!rc)
|
|
rc = err;
|
|
}
|
|
} else
|
|
set = 1;
|
|
}
|
|
if (!set && !rc)
|
|
rc = -EIO;
|
|
}
|
|
return rc;
|
|
}
|
|
|
|
/**
|
|
* This is _inode_ placement policy function (not name).
|
|
*/
|
|
static int lmv_placement_policy(struct obd_device *obd,
|
|
struct md_op_data *op_data, u32 *mds)
|
|
{
|
|
struct lmv_obd *lmv = &obd->u.lmv;
|
|
|
|
LASSERT(mds);
|
|
|
|
if (lmv->desc.ld_tgt_count == 1) {
|
|
*mds = 0;
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* If stripe_offset is provided during setdirstripe
|
|
* (setdirstripe -i xx), xx MDS will be chosen.
|
|
*/
|
|
if (op_data->op_cli_flags & CLI_SET_MEA) {
|
|
struct lmv_user_md *lum;
|
|
|
|
lum = (struct lmv_user_md *)op_data->op_data;
|
|
if (lum->lum_type == LMV_STRIPE_TYPE &&
|
|
lum->lum_stripe_offset != -1) {
|
|
if (lum->lum_stripe_offset >= lmv->desc.ld_tgt_count) {
|
|
CERROR("%s: Stripe_offset %d > MDT count %d: rc = %d\n",
|
|
obd->obd_name,
|
|
lum->lum_stripe_offset,
|
|
lmv->desc.ld_tgt_count, -ERANGE);
|
|
return -ERANGE;
|
|
}
|
|
*mds = lum->lum_stripe_offset;
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
/* Allocate new fid on target according to operation type and parent
|
|
* home mds.
|
|
*/
|
|
*mds = op_data->op_mds;
|
|
return 0;
|
|
}
|
|
|
|
int __lmv_fid_alloc(struct lmv_obd *lmv, struct lu_fid *fid, u32 mds)
|
|
{
|
|
struct lmv_tgt_desc *tgt;
|
|
int rc;
|
|
|
|
tgt = lmv_get_target(lmv, mds);
|
|
if (IS_ERR(tgt))
|
|
return PTR_ERR(tgt);
|
|
|
|
/*
|
|
* New seq alloc and FLD setup should be atomic. Otherwise we may find
|
|
* on server that seq in new allocated fid is not yet known.
|
|
*/
|
|
mutex_lock(&tgt->ltd_fid_mutex);
|
|
|
|
if (tgt->ltd_active == 0 || !tgt->ltd_exp) {
|
|
rc = -ENODEV;
|
|
goto out;
|
|
}
|
|
|
|
/*
|
|
* Asking underlaying tgt layer to allocate new fid.
|
|
*/
|
|
rc = obd_fid_alloc(tgt->ltd_exp, fid, NULL);
|
|
if (rc > 0) {
|
|
LASSERT(fid_is_sane(fid));
|
|
rc = 0;
|
|
}
|
|
|
|
out:
|
|
mutex_unlock(&tgt->ltd_fid_mutex);
|
|
return rc;
|
|
}
|
|
|
|
int lmv_fid_alloc(struct obd_export *exp, struct lu_fid *fid,
|
|
struct md_op_data *op_data)
|
|
{
|
|
struct obd_device *obd = class_exp2obd(exp);
|
|
struct lmv_obd *lmv = &obd->u.lmv;
|
|
u32 mds = 0;
|
|
int rc;
|
|
|
|
LASSERT(op_data);
|
|
LASSERT(fid);
|
|
|
|
rc = lmv_placement_policy(obd, op_data, &mds);
|
|
if (rc) {
|
|
CERROR("Can't get target for allocating fid, rc %d\n",
|
|
rc);
|
|
return rc;
|
|
}
|
|
|
|
rc = __lmv_fid_alloc(lmv, fid, mds);
|
|
if (rc) {
|
|
CERROR("Can't alloc new fid, rc %d\n", rc);
|
|
return rc;
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
|
|
static int lmv_setup(struct obd_device *obd, struct lustre_cfg *lcfg)
|
|
{
|
|
struct lmv_obd *lmv = &obd->u.lmv;
|
|
struct lprocfs_static_vars lvars = { NULL };
|
|
struct lmv_desc *desc;
|
|
int rc;
|
|
|
|
if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1) {
|
|
CERROR("LMV setup requires a descriptor\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
desc = (struct lmv_desc *)lustre_cfg_buf(lcfg, 1);
|
|
if (sizeof(*desc) > LUSTRE_CFG_BUFLEN(lcfg, 1)) {
|
|
CERROR("Lmv descriptor size wrong: %d > %d\n",
|
|
(int)sizeof(*desc), LUSTRE_CFG_BUFLEN(lcfg, 1));
|
|
return -EINVAL;
|
|
}
|
|
|
|
lmv->tgts = kcalloc(32, sizeof(*lmv->tgts), GFP_NOFS);
|
|
if (!lmv->tgts)
|
|
return -ENOMEM;
|
|
lmv->tgts_size = 32;
|
|
|
|
obd_str2uuid(&lmv->desc.ld_uuid, desc->ld_uuid.uuid);
|
|
lmv->desc.ld_tgt_count = 0;
|
|
lmv->desc.ld_active_tgt_count = 0;
|
|
lmv->max_cookiesize = 0;
|
|
lmv->max_def_easize = 0;
|
|
lmv->max_easize = 0;
|
|
lmv->lmv_placement = PLACEMENT_CHAR_POLICY;
|
|
|
|
spin_lock_init(&lmv->lmv_lock);
|
|
mutex_init(&lmv->init_mutex);
|
|
|
|
lprocfs_lmv_init_vars(&lvars);
|
|
|
|
lprocfs_obd_setup(obd, lvars.obd_vars, lvars.sysfs_vars);
|
|
rc = ldebugfs_seq_create(obd->obd_debugfs_entry, "target_obd",
|
|
0444, &lmv_proc_target_fops, obd);
|
|
if (rc)
|
|
CWARN("%s: error adding LMV target_obd file: rc = %d\n",
|
|
obd->obd_name, rc);
|
|
rc = fld_client_init(&lmv->lmv_fld, obd->obd_name,
|
|
LUSTRE_CLI_FLD_HASH_DHT);
|
|
if (rc) {
|
|
CERROR("Can't init FLD, err %d\n", rc);
|
|
goto out;
|
|
}
|
|
|
|
return 0;
|
|
|
|
out:
|
|
return rc;
|
|
}
|
|
|
|
static int lmv_cleanup(struct obd_device *obd)
|
|
{
|
|
struct lmv_obd *lmv = &obd->u.lmv;
|
|
|
|
fld_client_fini(&lmv->lmv_fld);
|
|
if (lmv->tgts) {
|
|
int i;
|
|
|
|
for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
|
|
if (!lmv->tgts[i])
|
|
continue;
|
|
lmv_del_target(lmv, i);
|
|
}
|
|
kfree(lmv->tgts);
|
|
lmv->tgts_size = 0;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int lmv_process_config(struct obd_device *obd, u32 len, void *buf)
|
|
{
|
|
struct lustre_cfg *lcfg = buf;
|
|
struct obd_uuid obd_uuid;
|
|
int gen;
|
|
__u32 index;
|
|
int rc;
|
|
|
|
switch (lcfg->lcfg_command) {
|
|
case LCFG_ADD_MDC:
|
|
/* modify_mdc_tgts add 0:lustre-clilmv 1:lustre-MDT0000_UUID
|
|
* 2:0 3:1 4:lustre-MDT0000-mdc_UUID
|
|
*/
|
|
if (LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(obd_uuid.uuid)) {
|
|
rc = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
obd_str2uuid(&obd_uuid, lustre_cfg_buf(lcfg, 1));
|
|
|
|
if (sscanf(lustre_cfg_buf(lcfg, 2), "%d", &index) != 1) {
|
|
rc = -EINVAL;
|
|
goto out;
|
|
}
|
|
if (sscanf(lustre_cfg_buf(lcfg, 3), "%d", &gen) != 1) {
|
|
rc = -EINVAL;
|
|
goto out;
|
|
}
|
|
rc = lmv_add_target(obd, &obd_uuid, index, gen);
|
|
goto out;
|
|
default:
|
|
CERROR("Unknown command: %d\n", lcfg->lcfg_command);
|
|
rc = -EINVAL;
|
|
goto out;
|
|
}
|
|
out:
|
|
return rc;
|
|
}
|
|
|
|
static int lmv_statfs(const struct lu_env *env, struct obd_export *exp,
|
|
struct obd_statfs *osfs, __u64 max_age, __u32 flags)
|
|
{
|
|
struct obd_device *obd = class_exp2obd(exp);
|
|
struct lmv_obd *lmv = &obd->u.lmv;
|
|
struct obd_statfs *temp;
|
|
int rc = 0;
|
|
int i;
|
|
|
|
rc = lmv_check_connect(obd);
|
|
if (rc)
|
|
return rc;
|
|
|
|
temp = kzalloc(sizeof(*temp), GFP_NOFS);
|
|
if (!temp)
|
|
return -ENOMEM;
|
|
|
|
for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
|
|
if (!lmv->tgts[i] || !lmv->tgts[i]->ltd_exp)
|
|
continue;
|
|
|
|
rc = obd_statfs(env, lmv->tgts[i]->ltd_exp, temp,
|
|
max_age, flags);
|
|
if (rc) {
|
|
CERROR("can't stat MDS #%d (%s), error %d\n", i,
|
|
lmv->tgts[i]->ltd_exp->exp_obd->obd_name,
|
|
rc);
|
|
goto out_free_temp;
|
|
}
|
|
|
|
if (i == 0) {
|
|
*osfs = *temp;
|
|
/* If the statfs is from mount, it will needs
|
|
* retrieve necessary information from MDT0.
|
|
* i.e. mount does not need the merged osfs
|
|
* from all of MDT.
|
|
* And also clients can be mounted as long as
|
|
* MDT0 is in service
|
|
*/
|
|
if (flags & OBD_STATFS_FOR_MDT0)
|
|
goto out_free_temp;
|
|
} else {
|
|
osfs->os_bavail += temp->os_bavail;
|
|
osfs->os_blocks += temp->os_blocks;
|
|
osfs->os_ffree += temp->os_ffree;
|
|
osfs->os_files += temp->os_files;
|
|
}
|
|
}
|
|
|
|
out_free_temp:
|
|
kfree(temp);
|
|
return rc;
|
|
}
|
|
|
|
static int lmv_getstatus(struct obd_export *exp,
|
|
struct lu_fid *fid)
|
|
{
|
|
struct obd_device *obd = exp->exp_obd;
|
|
struct lmv_obd *lmv = &obd->u.lmv;
|
|
int rc;
|
|
|
|
rc = lmv_check_connect(obd);
|
|
if (rc)
|
|
return rc;
|
|
|
|
rc = md_getstatus(lmv->tgts[0]->ltd_exp, fid);
|
|
return rc;
|
|
}
|
|
|
|
static int lmv_getxattr(struct obd_export *exp, const struct lu_fid *fid,
|
|
u64 valid, const char *name,
|
|
const char *input, int input_size, int output_size,
|
|
int flags, struct ptlrpc_request **request)
|
|
{
|
|
struct obd_device *obd = exp->exp_obd;
|
|
struct lmv_obd *lmv = &obd->u.lmv;
|
|
struct lmv_tgt_desc *tgt;
|
|
int rc;
|
|
|
|
rc = lmv_check_connect(obd);
|
|
if (rc)
|
|
return rc;
|
|
|
|
tgt = lmv_find_target(lmv, fid);
|
|
if (IS_ERR(tgt))
|
|
return PTR_ERR(tgt);
|
|
|
|
rc = md_getxattr(tgt->ltd_exp, fid, valid, name, input,
|
|
input_size, output_size, flags, request);
|
|
|
|
return rc;
|
|
}
|
|
|
|
static int lmv_setxattr(struct obd_export *exp, const struct lu_fid *fid,
|
|
u64 valid, const char *name,
|
|
const char *input, int input_size, int output_size,
|
|
int flags, __u32 suppgid,
|
|
struct ptlrpc_request **request)
|
|
{
|
|
struct obd_device *obd = exp->exp_obd;
|
|
struct lmv_obd *lmv = &obd->u.lmv;
|
|
struct lmv_tgt_desc *tgt;
|
|
int rc;
|
|
|
|
rc = lmv_check_connect(obd);
|
|
if (rc)
|
|
return rc;
|
|
|
|
tgt = lmv_find_target(lmv, fid);
|
|
if (IS_ERR(tgt))
|
|
return PTR_ERR(tgt);
|
|
|
|
rc = md_setxattr(tgt->ltd_exp, fid, valid, name, input,
|
|
input_size, output_size, flags, suppgid,
|
|
request);
|
|
|
|
return rc;
|
|
}
|
|
|
|
static int lmv_getattr(struct obd_export *exp, struct md_op_data *op_data,
|
|
struct ptlrpc_request **request)
|
|
{
|
|
struct obd_device *obd = exp->exp_obd;
|
|
struct lmv_obd *lmv = &obd->u.lmv;
|
|
struct lmv_tgt_desc *tgt;
|
|
int rc;
|
|
|
|
rc = lmv_check_connect(obd);
|
|
if (rc)
|
|
return rc;
|
|
|
|
tgt = lmv_find_target(lmv, &op_data->op_fid1);
|
|
if (IS_ERR(tgt))
|
|
return PTR_ERR(tgt);
|
|
|
|
if (op_data->op_flags & MF_GET_MDT_IDX) {
|
|
op_data->op_mds = tgt->ltd_idx;
|
|
return 0;
|
|
}
|
|
|
|
rc = md_getattr(tgt->ltd_exp, op_data, request);
|
|
|
|
return rc;
|
|
}
|
|
|
|
static int lmv_null_inode(struct obd_export *exp, const struct lu_fid *fid)
|
|
{
|
|
struct obd_device *obd = exp->exp_obd;
|
|
struct lmv_obd *lmv = &obd->u.lmv;
|
|
int i;
|
|
int rc;
|
|
|
|
rc = lmv_check_connect(obd);
|
|
if (rc)
|
|
return rc;
|
|
|
|
CDEBUG(D_INODE, "CBDATA for "DFID"\n", PFID(fid));
|
|
|
|
/*
|
|
* With DNE every object can have two locks in different namespaces:
|
|
* lookup lock in space of MDT storing direntry and update/open lock in
|
|
* space of MDT storing inode.
|
|
*/
|
|
for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
|
|
if (!lmv->tgts[i] || !lmv->tgts[i]->ltd_exp)
|
|
continue;
|
|
md_null_inode(lmv->tgts[i]->ltd_exp, fid);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int lmv_find_cbdata(struct obd_export *exp, const struct lu_fid *fid,
|
|
ldlm_iterator_t it, void *data)
|
|
{
|
|
struct obd_device *obd = exp->exp_obd;
|
|
struct lmv_obd *lmv = &obd->u.lmv;
|
|
int i;
|
|
int rc;
|
|
|
|
rc = lmv_check_connect(obd);
|
|
if (rc)
|
|
return rc;
|
|
|
|
CDEBUG(D_INODE, "CBDATA for "DFID"\n", PFID(fid));
|
|
|
|
/*
|
|
* With DNE every object can have two locks in different namespaces:
|
|
* lookup lock in space of MDT storing direntry and update/open lock in
|
|
* space of MDT storing inode.
|
|
*/
|
|
for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
|
|
if (!lmv->tgts[i] || !lmv->tgts[i]->ltd_exp)
|
|
continue;
|
|
rc = md_find_cbdata(lmv->tgts[i]->ltd_exp, fid, it, data);
|
|
if (rc)
|
|
return rc;
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
|
|
static int lmv_close(struct obd_export *exp, struct md_op_data *op_data,
|
|
struct md_open_data *mod, struct ptlrpc_request **request)
|
|
{
|
|
struct obd_device *obd = exp->exp_obd;
|
|
struct lmv_obd *lmv = &obd->u.lmv;
|
|
struct lmv_tgt_desc *tgt;
|
|
int rc;
|
|
|
|
rc = lmv_check_connect(obd);
|
|
if (rc)
|
|
return rc;
|
|
|
|
tgt = lmv_find_target(lmv, &op_data->op_fid1);
|
|
if (IS_ERR(tgt))
|
|
return PTR_ERR(tgt);
|
|
|
|
CDEBUG(D_INODE, "CLOSE "DFID"\n", PFID(&op_data->op_fid1));
|
|
rc = md_close(tgt->ltd_exp, op_data, mod, request);
|
|
return rc;
|
|
}
|
|
|
|
struct lmv_tgt_desc
|
|
*lmv_locate_mds(struct lmv_obd *lmv, struct md_op_data *op_data,
|
|
struct lu_fid *fid)
|
|
{
|
|
struct lmv_tgt_desc *tgt;
|
|
|
|
tgt = lmv_find_target(lmv, fid);
|
|
if (IS_ERR(tgt))
|
|
return tgt;
|
|
|
|
op_data->op_mds = tgt->ltd_idx;
|
|
|
|
return tgt;
|
|
}
|
|
|
|
static int lmv_create(struct obd_export *exp, struct md_op_data *op_data,
|
|
const void *data, int datalen, int mode, __u32 uid,
|
|
__u32 gid, cfs_cap_t cap_effective, __u64 rdev,
|
|
struct ptlrpc_request **request)
|
|
{
|
|
struct obd_device *obd = exp->exp_obd;
|
|
struct lmv_obd *lmv = &obd->u.lmv;
|
|
struct lmv_tgt_desc *tgt;
|
|
int rc;
|
|
|
|
rc = lmv_check_connect(obd);
|
|
if (rc)
|
|
return rc;
|
|
|
|
if (!lmv->desc.ld_active_tgt_count)
|
|
return -EIO;
|
|
|
|
tgt = lmv_locate_mds(lmv, op_data, &op_data->op_fid1);
|
|
if (IS_ERR(tgt))
|
|
return PTR_ERR(tgt);
|
|
|
|
rc = lmv_fid_alloc(exp, &op_data->op_fid2, op_data);
|
|
if (rc)
|
|
return rc;
|
|
|
|
CDEBUG(D_INODE, "CREATE '%*s' on "DFID" -> mds #%x\n",
|
|
op_data->op_namelen, op_data->op_name, PFID(&op_data->op_fid1),
|
|
op_data->op_mds);
|
|
|
|
op_data->op_flags |= MF_MDC_CANCEL_FID1;
|
|
rc = md_create(tgt->ltd_exp, op_data, data, datalen, mode, uid, gid,
|
|
cap_effective, rdev, request);
|
|
|
|
if (rc == 0) {
|
|
if (!*request)
|
|
return rc;
|
|
CDEBUG(D_INODE, "Created - "DFID"\n", PFID(&op_data->op_fid2));
|
|
}
|
|
return rc;
|
|
}
|
|
|
|
static int lmv_done_writing(struct obd_export *exp,
|
|
struct md_op_data *op_data,
|
|
struct md_open_data *mod)
|
|
{
|
|
struct obd_device *obd = exp->exp_obd;
|
|
struct lmv_obd *lmv = &obd->u.lmv;
|
|
struct lmv_tgt_desc *tgt;
|
|
int rc;
|
|
|
|
rc = lmv_check_connect(obd);
|
|
if (rc)
|
|
return rc;
|
|
|
|
tgt = lmv_find_target(lmv, &op_data->op_fid1);
|
|
if (IS_ERR(tgt))
|
|
return PTR_ERR(tgt);
|
|
|
|
rc = md_done_writing(tgt->ltd_exp, op_data, mod);
|
|
return rc;
|
|
}
|
|
|
|
static int
|
|
lmv_enqueue_remote(struct obd_export *exp, struct ldlm_enqueue_info *einfo,
|
|
struct lookup_intent *it, struct md_op_data *op_data,
|
|
struct lustre_handle *lockh, void *lmm, int lmmsize,
|
|
__u64 extra_lock_flags)
|
|
{
|
|
struct ptlrpc_request *req = it->d.lustre.it_data;
|
|
struct obd_device *obd = exp->exp_obd;
|
|
struct lmv_obd *lmv = &obd->u.lmv;
|
|
struct lustre_handle plock;
|
|
struct lmv_tgt_desc *tgt;
|
|
struct md_op_data *rdata;
|
|
struct lu_fid fid1;
|
|
struct mdt_body *body;
|
|
int rc = 0;
|
|
int pmode;
|
|
|
|
body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
|
|
|
|
if (!(body->valid & OBD_MD_MDS))
|
|
return 0;
|
|
|
|
CDEBUG(D_INODE, "REMOTE_ENQUEUE '%s' on "DFID" -> "DFID"\n",
|
|
LL_IT2STR(it), PFID(&op_data->op_fid1), PFID(&body->fid1));
|
|
|
|
/*
|
|
* We got LOOKUP lock, but we really need attrs.
|
|
*/
|
|
pmode = it->d.lustre.it_lock_mode;
|
|
LASSERT(pmode != 0);
|
|
memcpy(&plock, lockh, sizeof(plock));
|
|
it->d.lustre.it_lock_mode = 0;
|
|
it->d.lustre.it_data = NULL;
|
|
fid1 = body->fid1;
|
|
|
|
ptlrpc_req_finished(req);
|
|
|
|
tgt = lmv_find_target(lmv, &fid1);
|
|
if (IS_ERR(tgt)) {
|
|
rc = PTR_ERR(tgt);
|
|
goto out;
|
|
}
|
|
|
|
rdata = kzalloc(sizeof(*rdata), GFP_NOFS);
|
|
if (!rdata) {
|
|
rc = -ENOMEM;
|
|
goto out;
|
|
}
|
|
|
|
rdata->op_fid1 = fid1;
|
|
rdata->op_bias = MDS_CROSS_REF;
|
|
|
|
rc = md_enqueue(tgt->ltd_exp, einfo, it, rdata, lockh,
|
|
lmm, lmmsize, NULL, extra_lock_flags);
|
|
kfree(rdata);
|
|
out:
|
|
ldlm_lock_decref(&plock, pmode);
|
|
return rc;
|
|
}
|
|
|
|
static int
|
|
lmv_enqueue(struct obd_export *exp, struct ldlm_enqueue_info *einfo,
|
|
struct lookup_intent *it, struct md_op_data *op_data,
|
|
struct lustre_handle *lockh, void *lmm, int lmmsize,
|
|
struct ptlrpc_request **req, __u64 extra_lock_flags)
|
|
{
|
|
struct obd_device *obd = exp->exp_obd;
|
|
struct lmv_obd *lmv = &obd->u.lmv;
|
|
struct lmv_tgt_desc *tgt;
|
|
int rc;
|
|
|
|
rc = lmv_check_connect(obd);
|
|
if (rc)
|
|
return rc;
|
|
|
|
CDEBUG(D_INODE, "ENQUEUE '%s' on "DFID"\n",
|
|
LL_IT2STR(it), PFID(&op_data->op_fid1));
|
|
|
|
tgt = lmv_locate_mds(lmv, op_data, &op_data->op_fid1);
|
|
if (IS_ERR(tgt))
|
|
return PTR_ERR(tgt);
|
|
|
|
CDEBUG(D_INODE, "ENQUEUE '%s' on "DFID" -> mds #%d\n",
|
|
LL_IT2STR(it), PFID(&op_data->op_fid1), tgt->ltd_idx);
|
|
|
|
rc = md_enqueue(tgt->ltd_exp, einfo, it, op_data, lockh,
|
|
lmm, lmmsize, req, extra_lock_flags);
|
|
|
|
if (rc == 0 && it && it->it_op == IT_OPEN) {
|
|
rc = lmv_enqueue_remote(exp, einfo, it, op_data, lockh,
|
|
lmm, lmmsize, extra_lock_flags);
|
|
}
|
|
return rc;
|
|
}
|
|
|
|
static int
|
|
lmv_getattr_name(struct obd_export *exp, struct md_op_data *op_data,
|
|
struct ptlrpc_request **request)
|
|
{
|
|
struct ptlrpc_request *req = NULL;
|
|
struct obd_device *obd = exp->exp_obd;
|
|
struct lmv_obd *lmv = &obd->u.lmv;
|
|
struct lmv_tgt_desc *tgt;
|
|
struct mdt_body *body;
|
|
int rc;
|
|
|
|
rc = lmv_check_connect(obd);
|
|
if (rc)
|
|
return rc;
|
|
|
|
tgt = lmv_locate_mds(lmv, op_data, &op_data->op_fid1);
|
|
if (IS_ERR(tgt))
|
|
return PTR_ERR(tgt);
|
|
|
|
CDEBUG(D_INODE, "GETATTR_NAME for %*s on "DFID" -> mds #%d\n",
|
|
op_data->op_namelen, op_data->op_name, PFID(&op_data->op_fid1),
|
|
tgt->ltd_idx);
|
|
|
|
rc = md_getattr_name(tgt->ltd_exp, op_data, request);
|
|
if (rc != 0)
|
|
return rc;
|
|
|
|
body = req_capsule_server_get(&(*request)->rq_pill,
|
|
&RMF_MDT_BODY);
|
|
|
|
if (body->valid & OBD_MD_MDS) {
|
|
struct lu_fid rid = body->fid1;
|
|
|
|
CDEBUG(D_INODE, "Request attrs for "DFID"\n",
|
|
PFID(&rid));
|
|
|
|
tgt = lmv_find_target(lmv, &rid);
|
|
if (IS_ERR(tgt)) {
|
|
ptlrpc_req_finished(*request);
|
|
return PTR_ERR(tgt);
|
|
}
|
|
|
|
op_data->op_fid1 = rid;
|
|
op_data->op_valid |= OBD_MD_FLCROSSREF;
|
|
op_data->op_namelen = 0;
|
|
op_data->op_name = NULL;
|
|
rc = md_getattr_name(tgt->ltd_exp, op_data, &req);
|
|
ptlrpc_req_finished(*request);
|
|
*request = req;
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
|
|
#define md_op_data_fid(op_data, fl) \
|
|
(fl == MF_MDC_CANCEL_FID1 ? &op_data->op_fid1 : \
|
|
fl == MF_MDC_CANCEL_FID2 ? &op_data->op_fid2 : \
|
|
fl == MF_MDC_CANCEL_FID3 ? &op_data->op_fid3 : \
|
|
fl == MF_MDC_CANCEL_FID4 ? &op_data->op_fid4 : \
|
|
NULL)
|
|
|
|
static int lmv_early_cancel(struct obd_export *exp, struct md_op_data *op_data,
|
|
int op_tgt, enum ldlm_mode mode, int bits,
|
|
int flag)
|
|
{
|
|
struct lu_fid *fid = md_op_data_fid(op_data, flag);
|
|
struct obd_device *obd = exp->exp_obd;
|
|
struct lmv_obd *lmv = &obd->u.lmv;
|
|
struct lmv_tgt_desc *tgt;
|
|
ldlm_policy_data_t policy = { {0} };
|
|
int rc = 0;
|
|
|
|
if (!fid_is_sane(fid))
|
|
return 0;
|
|
|
|
tgt = lmv_find_target(lmv, fid);
|
|
if (IS_ERR(tgt))
|
|
return PTR_ERR(tgt);
|
|
|
|
if (tgt->ltd_idx != op_tgt) {
|
|
CDEBUG(D_INODE, "EARLY_CANCEL on "DFID"\n", PFID(fid));
|
|
policy.l_inodebits.bits = bits;
|
|
rc = md_cancel_unused(tgt->ltd_exp, fid, &policy,
|
|
mode, LCF_ASYNC, NULL);
|
|
} else {
|
|
CDEBUG(D_INODE,
|
|
"EARLY_CANCEL skip operation target %d on "DFID"\n",
|
|
op_tgt, PFID(fid));
|
|
op_data->op_flags |= flag;
|
|
rc = 0;
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
|
|
/*
|
|
* llite passes fid of an target inode in op_data->op_fid1 and id of directory in
|
|
* op_data->op_fid2
|
|
*/
|
|
static int lmv_link(struct obd_export *exp, struct md_op_data *op_data,
|
|
struct ptlrpc_request **request)
|
|
{
|
|
struct obd_device *obd = exp->exp_obd;
|
|
struct lmv_obd *lmv = &obd->u.lmv;
|
|
struct lmv_tgt_desc *tgt;
|
|
int rc;
|
|
|
|
rc = lmv_check_connect(obd);
|
|
if (rc)
|
|
return rc;
|
|
|
|
LASSERT(op_data->op_namelen != 0);
|
|
|
|
CDEBUG(D_INODE, "LINK "DFID":%*s to "DFID"\n",
|
|
PFID(&op_data->op_fid2), op_data->op_namelen,
|
|
op_data->op_name, PFID(&op_data->op_fid1));
|
|
|
|
op_data->op_fsuid = from_kuid(&init_user_ns, current_fsuid());
|
|
op_data->op_fsgid = from_kgid(&init_user_ns, current_fsgid());
|
|
op_data->op_cap = cfs_curproc_cap_pack();
|
|
tgt = lmv_locate_mds(lmv, op_data, &op_data->op_fid2);
|
|
if (IS_ERR(tgt))
|
|
return PTR_ERR(tgt);
|
|
|
|
/*
|
|
* Cancel UPDATE lock on child (fid1).
|
|
*/
|
|
op_data->op_flags |= MF_MDC_CANCEL_FID2;
|
|
rc = lmv_early_cancel(exp, op_data, tgt->ltd_idx, LCK_EX,
|
|
MDS_INODELOCK_UPDATE, MF_MDC_CANCEL_FID1);
|
|
if (rc != 0)
|
|
return rc;
|
|
|
|
rc = md_link(tgt->ltd_exp, op_data, request);
|
|
|
|
return rc;
|
|
}
|
|
|
|
static int lmv_rename(struct obd_export *exp, struct md_op_data *op_data,
|
|
const char *old, int oldlen, const char *new, int newlen,
|
|
struct ptlrpc_request **request)
|
|
{
|
|
struct obd_device *obd = exp->exp_obd;
|
|
struct lmv_obd *lmv = &obd->u.lmv;
|
|
struct lmv_tgt_desc *src_tgt;
|
|
struct lmv_tgt_desc *tgt_tgt;
|
|
int rc;
|
|
|
|
LASSERT(oldlen != 0);
|
|
|
|
CDEBUG(D_INODE, "RENAME %*s in "DFID" to %*s in "DFID"\n",
|
|
oldlen, old, PFID(&op_data->op_fid1),
|
|
newlen, new, PFID(&op_data->op_fid2));
|
|
|
|
rc = lmv_check_connect(obd);
|
|
if (rc)
|
|
return rc;
|
|
|
|
op_data->op_fsuid = from_kuid(&init_user_ns, current_fsuid());
|
|
op_data->op_fsgid = from_kgid(&init_user_ns, current_fsgid());
|
|
op_data->op_cap = cfs_curproc_cap_pack();
|
|
src_tgt = lmv_locate_mds(lmv, op_data, &op_data->op_fid1);
|
|
if (IS_ERR(src_tgt))
|
|
return PTR_ERR(src_tgt);
|
|
|
|
tgt_tgt = lmv_locate_mds(lmv, op_data, &op_data->op_fid2);
|
|
if (IS_ERR(tgt_tgt))
|
|
return PTR_ERR(tgt_tgt);
|
|
/*
|
|
* LOOKUP lock on src child (fid3) should also be cancelled for
|
|
* src_tgt in mdc_rename.
|
|
*/
|
|
op_data->op_flags |= MF_MDC_CANCEL_FID1 | MF_MDC_CANCEL_FID3;
|
|
|
|
/*
|
|
* Cancel UPDATE locks on tgt parent (fid2), tgt_tgt is its
|
|
* own target.
|
|
*/
|
|
rc = lmv_early_cancel(exp, op_data, src_tgt->ltd_idx,
|
|
LCK_EX, MDS_INODELOCK_UPDATE,
|
|
MF_MDC_CANCEL_FID2);
|
|
|
|
/*
|
|
* Cancel LOOKUP locks on tgt child (fid4) for parent tgt_tgt.
|
|
*/
|
|
if (rc == 0) {
|
|
rc = lmv_early_cancel(exp, op_data, src_tgt->ltd_idx,
|
|
LCK_EX, MDS_INODELOCK_LOOKUP,
|
|
MF_MDC_CANCEL_FID4);
|
|
}
|
|
|
|
/*
|
|
* Cancel all the locks on tgt child (fid4).
|
|
*/
|
|
if (rc == 0)
|
|
rc = lmv_early_cancel(exp, op_data, src_tgt->ltd_idx,
|
|
LCK_EX, MDS_INODELOCK_FULL,
|
|
MF_MDC_CANCEL_FID4);
|
|
|
|
if (rc == 0)
|
|
rc = md_rename(src_tgt->ltd_exp, op_data, old, oldlen,
|
|
new, newlen, request);
|
|
return rc;
|
|
}
|
|
|
|
static int lmv_setattr(struct obd_export *exp, struct md_op_data *op_data,
|
|
void *ea, int ealen, void *ea2, int ea2len,
|
|
struct ptlrpc_request **request,
|
|
struct md_open_data **mod)
|
|
{
|
|
struct obd_device *obd = exp->exp_obd;
|
|
struct lmv_obd *lmv = &obd->u.lmv;
|
|
struct lmv_tgt_desc *tgt;
|
|
int rc;
|
|
|
|
rc = lmv_check_connect(obd);
|
|
if (rc)
|
|
return rc;
|
|
|
|
CDEBUG(D_INODE, "SETATTR for "DFID", valid 0x%x\n",
|
|
PFID(&op_data->op_fid1), op_data->op_attr.ia_valid);
|
|
|
|
op_data->op_flags |= MF_MDC_CANCEL_FID1;
|
|
tgt = lmv_find_target(lmv, &op_data->op_fid1);
|
|
if (IS_ERR(tgt))
|
|
return PTR_ERR(tgt);
|
|
|
|
rc = md_setattr(tgt->ltd_exp, op_data, ea, ealen, ea2,
|
|
ea2len, request, mod);
|
|
|
|
return rc;
|
|
}
|
|
|
|
static int lmv_sync(struct obd_export *exp, const struct lu_fid *fid,
|
|
struct ptlrpc_request **request)
|
|
{
|
|
struct obd_device *obd = exp->exp_obd;
|
|
struct lmv_obd *lmv = &obd->u.lmv;
|
|
struct lmv_tgt_desc *tgt;
|
|
int rc;
|
|
|
|
rc = lmv_check_connect(obd);
|
|
if (rc)
|
|
return rc;
|
|
|
|
tgt = lmv_find_target(lmv, fid);
|
|
if (IS_ERR(tgt))
|
|
return PTR_ERR(tgt);
|
|
|
|
rc = md_sync(tgt->ltd_exp, fid, request);
|
|
return rc;
|
|
}
|
|
|
|
/*
|
|
* Adjust a set of pages, each page containing an array of lu_dirpages,
|
|
* so that each page can be used as a single logical lu_dirpage.
|
|
*
|
|
* A lu_dirpage is laid out as follows, where s = ldp_hash_start,
|
|
* e = ldp_hash_end, f = ldp_flags, p = padding, and each "ent" is a
|
|
* struct lu_dirent. It has size up to LU_PAGE_SIZE. The ldp_hash_end
|
|
* value is used as a cookie to request the next lu_dirpage in a
|
|
* directory listing that spans multiple pages (two in this example):
|
|
* ________
|
|
* | |
|
|
* .|--------v------- -----.
|
|
* |s|e|f|p|ent|ent| ... |ent|
|
|
* '--|-------------- -----' Each CFS_PAGE contains a single
|
|
* '------. lu_dirpage.
|
|
* .---------v------- -----.
|
|
* |s|e|f|p|ent| 0 | ... | 0 |
|
|
* '----------------- -----'
|
|
*
|
|
* However, on hosts where the native VM page size (PAGE_CACHE_SIZE) is
|
|
* larger than LU_PAGE_SIZE, a single host page may contain multiple
|
|
* lu_dirpages. After reading the lu_dirpages from the MDS, the
|
|
* ldp_hash_end of the first lu_dirpage refers to the one immediately
|
|
* after it in the same CFS_PAGE (arrows simplified for brevity, but
|
|
* in general e0==s1, e1==s2, etc.):
|
|
*
|
|
* .-------------------- -----.
|
|
* |s0|e0|f0|p|ent|ent| ... |ent|
|
|
* |---v---------------- -----|
|
|
* |s1|e1|f1|p|ent|ent| ... |ent|
|
|
* |---v---------------- -----| Here, each CFS_PAGE contains
|
|
* ... multiple lu_dirpages.
|
|
* |---v---------------- -----|
|
|
* |s'|e'|f'|p|ent|ent| ... |ent|
|
|
* '---|---------------- -----'
|
|
* v
|
|
* .----------------------------.
|
|
* | next CFS_PAGE |
|
|
*
|
|
* This structure is transformed into a single logical lu_dirpage as follows:
|
|
*
|
|
* - Replace e0 with e' so the request for the next lu_dirpage gets the page
|
|
* labeled 'next CFS_PAGE'.
|
|
*
|
|
* - Copy the LDF_COLLIDE flag from f' to f0 to correctly reflect whether
|
|
* a hash collision with the next page exists.
|
|
*
|
|
* - Adjust the lde_reclen of the ending entry of each lu_dirpage to span
|
|
* to the first entry of the next lu_dirpage.
|
|
*/
|
|
#if PAGE_CACHE_SIZE > LU_PAGE_SIZE
|
|
static void lmv_adjust_dirpages(struct page **pages, int ncfspgs, int nlupgs)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < ncfspgs; i++) {
|
|
struct lu_dirpage *dp = kmap(pages[i]);
|
|
struct lu_dirpage *first = dp;
|
|
struct lu_dirent *end_dirent = NULL;
|
|
struct lu_dirent *ent;
|
|
__u64 hash_end = dp->ldp_hash_end;
|
|
__u32 flags = dp->ldp_flags;
|
|
|
|
while (--nlupgs > 0) {
|
|
ent = lu_dirent_start(dp);
|
|
for (end_dirent = ent; ent;
|
|
end_dirent = ent, ent = lu_dirent_next(ent))
|
|
;
|
|
|
|
/* Advance dp to next lu_dirpage. */
|
|
dp = (struct lu_dirpage *)((char *)dp + LU_PAGE_SIZE);
|
|
|
|
/* Check if we've reached the end of the CFS_PAGE. */
|
|
if (!((unsigned long)dp & ~CFS_PAGE_MASK))
|
|
break;
|
|
|
|
/* Save the hash and flags of this lu_dirpage. */
|
|
hash_end = dp->ldp_hash_end;
|
|
flags = dp->ldp_flags;
|
|
|
|
/* Check if lu_dirpage contains no entries. */
|
|
if (!end_dirent)
|
|
break;
|
|
|
|
/* Enlarge the end entry lde_reclen from 0 to
|
|
* first entry of next lu_dirpage.
|
|
*/
|
|
LASSERT(le16_to_cpu(end_dirent->lde_reclen) == 0);
|
|
end_dirent->lde_reclen =
|
|
cpu_to_le16((char *)(dp->ldp_entries) -
|
|
(char *)end_dirent);
|
|
}
|
|
|
|
first->ldp_hash_end = hash_end;
|
|
first->ldp_flags &= ~cpu_to_le32(LDF_COLLIDE);
|
|
first->ldp_flags |= flags & cpu_to_le32(LDF_COLLIDE);
|
|
|
|
kunmap(pages[i]);
|
|
}
|
|
LASSERTF(nlupgs == 0, "left = %d", nlupgs);
|
|
}
|
|
#else
|
|
#define lmv_adjust_dirpages(pages, ncfspgs, nlupgs) do {} while (0)
|
|
#endif /* PAGE_CACHE_SIZE > LU_PAGE_SIZE */
|
|
|
|
static int lmv_readpage(struct obd_export *exp, struct md_op_data *op_data,
|
|
struct page **pages, struct ptlrpc_request **request)
|
|
{
|
|
struct obd_device *obd = exp->exp_obd;
|
|
struct lmv_obd *lmv = &obd->u.lmv;
|
|
__u64 offset = op_data->op_offset;
|
|
int rc;
|
|
int ncfspgs; /* pages read in PAGE_CACHE_SIZE */
|
|
int nlupgs; /* pages read in LU_PAGE_SIZE */
|
|
struct lmv_tgt_desc *tgt;
|
|
|
|
rc = lmv_check_connect(obd);
|
|
if (rc)
|
|
return rc;
|
|
|
|
CDEBUG(D_INODE, "READPAGE at %#llx from "DFID"\n",
|
|
offset, PFID(&op_data->op_fid1));
|
|
|
|
tgt = lmv_find_target(lmv, &op_data->op_fid1);
|
|
if (IS_ERR(tgt))
|
|
return PTR_ERR(tgt);
|
|
|
|
rc = md_readpage(tgt->ltd_exp, op_data, pages, request);
|
|
if (rc != 0)
|
|
return rc;
|
|
|
|
ncfspgs = ((*request)->rq_bulk->bd_nob_transferred + PAGE_SIZE - 1)
|
|
>> PAGE_SHIFT;
|
|
nlupgs = (*request)->rq_bulk->bd_nob_transferred >> LU_PAGE_SHIFT;
|
|
LASSERT(!((*request)->rq_bulk->bd_nob_transferred & ~LU_PAGE_MASK));
|
|
LASSERT(ncfspgs > 0 && ncfspgs <= op_data->op_npages);
|
|
|
|
CDEBUG(D_INODE, "read %d(%d)/%d pages\n", ncfspgs, nlupgs,
|
|
op_data->op_npages);
|
|
|
|
lmv_adjust_dirpages(pages, ncfspgs, nlupgs);
|
|
|
|
return rc;
|
|
}
|
|
|
|
static int lmv_unlink(struct obd_export *exp, struct md_op_data *op_data,
|
|
struct ptlrpc_request **request)
|
|
{
|
|
struct obd_device *obd = exp->exp_obd;
|
|
struct lmv_obd *lmv = &obd->u.lmv;
|
|
struct lmv_tgt_desc *tgt = NULL;
|
|
struct mdt_body *body;
|
|
int rc;
|
|
|
|
rc = lmv_check_connect(obd);
|
|
if (rc)
|
|
return rc;
|
|
retry:
|
|
/* Send unlink requests to the MDT where the child is located */
|
|
if (likely(!fid_is_zero(&op_data->op_fid2)))
|
|
tgt = lmv_locate_mds(lmv, op_data, &op_data->op_fid2);
|
|
else
|
|
tgt = lmv_locate_mds(lmv, op_data, &op_data->op_fid1);
|
|
if (IS_ERR(tgt))
|
|
return PTR_ERR(tgt);
|
|
|
|
op_data->op_fsuid = from_kuid(&init_user_ns, current_fsuid());
|
|
op_data->op_fsgid = from_kgid(&init_user_ns, current_fsgid());
|
|
op_data->op_cap = cfs_curproc_cap_pack();
|
|
|
|
/*
|
|
* If child's fid is given, cancel unused locks for it if it is from
|
|
* another export than parent.
|
|
*
|
|
* LOOKUP lock for child (fid3) should also be cancelled on parent
|
|
* tgt_tgt in mdc_unlink().
|
|
*/
|
|
op_data->op_flags |= MF_MDC_CANCEL_FID1 | MF_MDC_CANCEL_FID3;
|
|
|
|
/*
|
|
* Cancel FULL locks on child (fid3).
|
|
*/
|
|
rc = lmv_early_cancel(exp, op_data, tgt->ltd_idx, LCK_EX,
|
|
MDS_INODELOCK_FULL, MF_MDC_CANCEL_FID3);
|
|
|
|
if (rc != 0)
|
|
return rc;
|
|
|
|
CDEBUG(D_INODE, "unlink with fid="DFID"/"DFID" -> mds #%d\n",
|
|
PFID(&op_data->op_fid1), PFID(&op_data->op_fid2), tgt->ltd_idx);
|
|
|
|
rc = md_unlink(tgt->ltd_exp, op_data, request);
|
|
if (rc != 0 && rc != -EREMOTE)
|
|
return rc;
|
|
|
|
body = req_capsule_server_get(&(*request)->rq_pill, &RMF_MDT_BODY);
|
|
if (!body)
|
|
return -EPROTO;
|
|
|
|
/* Not cross-ref case, just get out of here. */
|
|
if (likely(!(body->valid & OBD_MD_MDS)))
|
|
return 0;
|
|
|
|
CDEBUG(D_INODE, "%s: try unlink to another MDT for "DFID"\n",
|
|
exp->exp_obd->obd_name, PFID(&body->fid1));
|
|
|
|
/* This is a remote object, try remote MDT, Note: it may
|
|
* try more than 1 time here, Considering following case
|
|
* /mnt/lustre is root on MDT0, remote1 is on MDT1
|
|
* 1. Initially A does not know where remote1 is, it send
|
|
* unlink RPC to MDT0, MDT0 return -EREMOTE, it will
|
|
* resend unlink RPC to MDT1 (retry 1st time).
|
|
*
|
|
* 2. During the unlink RPC in flight,
|
|
* client B mv /mnt/lustre/remote1 /mnt/lustre/remote2
|
|
* and create new remote1, but on MDT0
|
|
*
|
|
* 3. MDT1 get unlink RPC(from A), then do remote lock on
|
|
* /mnt/lustre, then lookup get fid of remote1, and find
|
|
* it is remote dir again, and replay -EREMOTE again.
|
|
*
|
|
* 4. Then A will resend unlink RPC to MDT0. (retry 2nd times).
|
|
*
|
|
* In theory, it might try unlimited time here, but it should
|
|
* be very rare case.
|
|
*/
|
|
op_data->op_fid2 = body->fid1;
|
|
ptlrpc_req_finished(*request);
|
|
*request = NULL;
|
|
|
|
goto retry;
|
|
}
|
|
|
|
static int lmv_precleanup(struct obd_device *obd, enum obd_cleanup_stage stage)
|
|
{
|
|
struct lmv_obd *lmv = &obd->u.lmv;
|
|
|
|
switch (stage) {
|
|
case OBD_CLEANUP_EARLY:
|
|
/* XXX: here should be calling obd_precleanup() down to
|
|
* stack.
|
|
*/
|
|
break;
|
|
case OBD_CLEANUP_EXPORTS:
|
|
fld_client_debugfs_fini(&lmv->lmv_fld);
|
|
lprocfs_obd_cleanup(obd);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int lmv_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 *obd;
|
|
struct lmv_obd *lmv;
|
|
int rc = 0;
|
|
|
|
obd = class_exp2obd(exp);
|
|
if (!obd) {
|
|
CDEBUG(D_IOCTL, "Invalid client cookie %#llx\n",
|
|
exp->exp_handle.h_cookie);
|
|
return -EINVAL;
|
|
}
|
|
|
|
lmv = &obd->u.lmv;
|
|
if (keylen >= strlen("remote_flag") && !strcmp(key, "remote_flag")) {
|
|
struct lmv_tgt_desc *tgt;
|
|
int i;
|
|
|
|
rc = lmv_check_connect(obd);
|
|
if (rc)
|
|
return rc;
|
|
|
|
LASSERT(*vallen == sizeof(__u32));
|
|
for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
|
|
tgt = lmv->tgts[i];
|
|
/*
|
|
* All tgts should be connected when this gets called.
|
|
*/
|
|
if (!tgt || !tgt->ltd_exp)
|
|
continue;
|
|
|
|
if (!obd_get_info(env, tgt->ltd_exp, keylen, key,
|
|
vallen, val, NULL))
|
|
return 0;
|
|
}
|
|
return -EINVAL;
|
|
} else if (KEY_IS(KEY_MAX_EASIZE) ||
|
|
KEY_IS(KEY_DEFAULT_EASIZE) ||
|
|
KEY_IS(KEY_CONN_DATA)) {
|
|
rc = lmv_check_connect(obd);
|
|
if (rc)
|
|
return rc;
|
|
|
|
/*
|
|
* Forwarding this request to first MDS, it should know LOV
|
|
* desc.
|
|
*/
|
|
rc = obd_get_info(env, lmv->tgts[0]->ltd_exp, keylen, key,
|
|
vallen, val, NULL);
|
|
if (!rc && KEY_IS(KEY_CONN_DATA))
|
|
exp->exp_connect_data = *(struct obd_connect_data *)val;
|
|
return rc;
|
|
} else if (KEY_IS(KEY_TGT_COUNT)) {
|
|
*((int *)val) = lmv->desc.ld_tgt_count;
|
|
return 0;
|
|
}
|
|
|
|
CDEBUG(D_IOCTL, "Invalid key\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
static int lmv_set_info_async(const struct lu_env *env, struct obd_export *exp,
|
|
u32 keylen, void *key, u32 vallen,
|
|
void *val, struct ptlrpc_request_set *set)
|
|
{
|
|
struct lmv_tgt_desc *tgt;
|
|
struct obd_device *obd;
|
|
struct lmv_obd *lmv;
|
|
int rc = 0;
|
|
|
|
obd = class_exp2obd(exp);
|
|
if (!obd) {
|
|
CDEBUG(D_IOCTL, "Invalid client cookie %#llx\n",
|
|
exp->exp_handle.h_cookie);
|
|
return -EINVAL;
|
|
}
|
|
lmv = &obd->u.lmv;
|
|
|
|
if (KEY_IS(KEY_READ_ONLY) || KEY_IS(KEY_FLUSH_CTX)) {
|
|
int i, err = 0;
|
|
|
|
for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
|
|
tgt = lmv->tgts[i];
|
|
|
|
if (!tgt || !tgt->ltd_exp)
|
|
continue;
|
|
|
|
err = obd_set_info_async(env, tgt->ltd_exp,
|
|
keylen, key, vallen, val, set);
|
|
if (err && rc == 0)
|
|
rc = err;
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
|
|
return -EINVAL;
|
|
}
|
|
|
|
static int lmv_packmd(struct obd_export *exp, struct lov_mds_md **lmmp,
|
|
struct lov_stripe_md *lsm)
|
|
{
|
|
struct obd_device *obd = class_exp2obd(exp);
|
|
struct lmv_obd *lmv = &obd->u.lmv;
|
|
struct lmv_stripe_md *meap;
|
|
struct lmv_stripe_md *lsmp;
|
|
int mea_size;
|
|
int i;
|
|
|
|
mea_size = lmv_get_easize(lmv);
|
|
if (!lmmp)
|
|
return mea_size;
|
|
|
|
if (*lmmp && !lsm) {
|
|
kvfree(*lmmp);
|
|
*lmmp = NULL;
|
|
return 0;
|
|
}
|
|
|
|
if (!*lmmp) {
|
|
*lmmp = libcfs_kvzalloc(mea_size, GFP_NOFS);
|
|
if (!*lmmp)
|
|
return -ENOMEM;
|
|
}
|
|
|
|
if (!lsm)
|
|
return mea_size;
|
|
|
|
lsmp = (struct lmv_stripe_md *)lsm;
|
|
meap = (struct lmv_stripe_md *)*lmmp;
|
|
|
|
if (lsmp->mea_magic != MEA_MAGIC_LAST_CHAR &&
|
|
lsmp->mea_magic != MEA_MAGIC_ALL_CHARS)
|
|
return -EINVAL;
|
|
|
|
meap->mea_magic = cpu_to_le32(lsmp->mea_magic);
|
|
meap->mea_count = cpu_to_le32(lsmp->mea_count);
|
|
meap->mea_master = cpu_to_le32(lsmp->mea_master);
|
|
|
|
for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
|
|
meap->mea_ids[i] = lsmp->mea_ids[i];
|
|
fid_cpu_to_le(&meap->mea_ids[i], &lsmp->mea_ids[i]);
|
|
}
|
|
|
|
return mea_size;
|
|
}
|
|
|
|
static int lmv_unpackmd(struct obd_export *exp, struct lov_stripe_md **lsmp,
|
|
struct lov_mds_md *lmm, int lmm_size)
|
|
{
|
|
struct obd_device *obd = class_exp2obd(exp);
|
|
struct lmv_stripe_md **tmea = (struct lmv_stripe_md **)lsmp;
|
|
struct lmv_stripe_md *mea = (struct lmv_stripe_md *)lmm;
|
|
struct lmv_obd *lmv = &obd->u.lmv;
|
|
int mea_size;
|
|
int i;
|
|
__u32 magic;
|
|
|
|
mea_size = lmv_get_easize(lmv);
|
|
if (!lsmp)
|
|
return mea_size;
|
|
|
|
if (*lsmp && !lmm) {
|
|
kvfree(*tmea);
|
|
*lsmp = NULL;
|
|
return 0;
|
|
}
|
|
|
|
LASSERT(mea_size == lmm_size);
|
|
|
|
*tmea = libcfs_kvzalloc(mea_size, GFP_NOFS);
|
|
if (!*tmea)
|
|
return -ENOMEM;
|
|
|
|
if (!lmm)
|
|
return mea_size;
|
|
|
|
if (mea->mea_magic == MEA_MAGIC_LAST_CHAR ||
|
|
mea->mea_magic == MEA_MAGIC_ALL_CHARS ||
|
|
mea->mea_magic == MEA_MAGIC_HASH_SEGMENT) {
|
|
magic = le32_to_cpu(mea->mea_magic);
|
|
} else {
|
|
/*
|
|
* Old mea is not handled here.
|
|
*/
|
|
CERROR("Old not supportable EA is found\n");
|
|
LBUG();
|
|
}
|
|
|
|
(*tmea)->mea_magic = magic;
|
|
(*tmea)->mea_count = le32_to_cpu(mea->mea_count);
|
|
(*tmea)->mea_master = le32_to_cpu(mea->mea_master);
|
|
|
|
for (i = 0; i < (*tmea)->mea_count; i++) {
|
|
(*tmea)->mea_ids[i] = mea->mea_ids[i];
|
|
fid_le_to_cpu(&(*tmea)->mea_ids[i], &(*tmea)->mea_ids[i]);
|
|
}
|
|
return mea_size;
|
|
}
|
|
|
|
static int lmv_cancel_unused(struct obd_export *exp, const struct lu_fid *fid,
|
|
ldlm_policy_data_t *policy, enum ldlm_mode mode,
|
|
enum ldlm_cancel_flags flags, void *opaque)
|
|
{
|
|
struct obd_device *obd = exp->exp_obd;
|
|
struct lmv_obd *lmv = &obd->u.lmv;
|
|
int rc = 0;
|
|
int err;
|
|
int i;
|
|
|
|
LASSERT(fid);
|
|
|
|
for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
|
|
if (!lmv->tgts[i] || !lmv->tgts[i]->ltd_exp ||
|
|
lmv->tgts[i]->ltd_active == 0)
|
|
continue;
|
|
|
|
err = md_cancel_unused(lmv->tgts[i]->ltd_exp, fid,
|
|
policy, mode, flags, opaque);
|
|
if (!rc)
|
|
rc = err;
|
|
}
|
|
return rc;
|
|
}
|
|
|
|
static int lmv_set_lock_data(struct obd_export *exp, __u64 *lockh, void *data,
|
|
__u64 *bits)
|
|
{
|
|
struct lmv_obd *lmv = &exp->exp_obd->u.lmv;
|
|
int rc;
|
|
|
|
rc = md_set_lock_data(lmv->tgts[0]->ltd_exp, lockh, data, bits);
|
|
return rc;
|
|
}
|
|
|
|
static enum ldlm_mode lmv_lock_match(struct obd_export *exp, __u64 flags,
|
|
const struct lu_fid *fid,
|
|
enum ldlm_type type,
|
|
ldlm_policy_data_t *policy,
|
|
enum ldlm_mode mode,
|
|
struct lustre_handle *lockh)
|
|
{
|
|
struct obd_device *obd = exp->exp_obd;
|
|
struct lmv_obd *lmv = &obd->u.lmv;
|
|
enum ldlm_mode rc;
|
|
int i;
|
|
|
|
CDEBUG(D_INODE, "Lock match for "DFID"\n", PFID(fid));
|
|
|
|
/*
|
|
* With CMD every object can have two locks in different namespaces:
|
|
* lookup lock in space of mds storing direntry and update/open lock in
|
|
* space of mds storing inode. Thus we check all targets, not only that
|
|
* one fid was created in.
|
|
*/
|
|
for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
|
|
if (!lmv->tgts[i] || !lmv->tgts[i]->ltd_exp ||
|
|
lmv->tgts[i]->ltd_active == 0)
|
|
continue;
|
|
|
|
rc = md_lock_match(lmv->tgts[i]->ltd_exp, flags, fid,
|
|
type, policy, mode, lockh);
|
|
if (rc)
|
|
return rc;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int lmv_get_lustre_md(struct obd_export *exp,
|
|
struct ptlrpc_request *req,
|
|
struct obd_export *dt_exp,
|
|
struct obd_export *md_exp,
|
|
struct lustre_md *md)
|
|
{
|
|
struct lmv_obd *lmv = &exp->exp_obd->u.lmv;
|
|
|
|
return md_get_lustre_md(lmv->tgts[0]->ltd_exp, req, dt_exp, md_exp, md);
|
|
}
|
|
|
|
static int lmv_free_lustre_md(struct obd_export *exp, struct lustre_md *md)
|
|
{
|
|
struct obd_device *obd = exp->exp_obd;
|
|
struct lmv_obd *lmv = &obd->u.lmv;
|
|
|
|
if (md->mea)
|
|
obd_free_memmd(exp, (void *)&md->mea);
|
|
return md_free_lustre_md(lmv->tgts[0]->ltd_exp, md);
|
|
}
|
|
|
|
static int lmv_set_open_replay_data(struct obd_export *exp,
|
|
struct obd_client_handle *och,
|
|
struct lookup_intent *it)
|
|
{
|
|
struct obd_device *obd = exp->exp_obd;
|
|
struct lmv_obd *lmv = &obd->u.lmv;
|
|
struct lmv_tgt_desc *tgt;
|
|
|
|
tgt = lmv_find_target(lmv, &och->och_fid);
|
|
if (IS_ERR(tgt))
|
|
return PTR_ERR(tgt);
|
|
|
|
return md_set_open_replay_data(tgt->ltd_exp, och, it);
|
|
}
|
|
|
|
static int lmv_clear_open_replay_data(struct obd_export *exp,
|
|
struct obd_client_handle *och)
|
|
{
|
|
struct obd_device *obd = exp->exp_obd;
|
|
struct lmv_obd *lmv = &obd->u.lmv;
|
|
struct lmv_tgt_desc *tgt;
|
|
|
|
tgt = lmv_find_target(lmv, &och->och_fid);
|
|
if (IS_ERR(tgt))
|
|
return PTR_ERR(tgt);
|
|
|
|
return md_clear_open_replay_data(tgt->ltd_exp, och);
|
|
}
|
|
|
|
static int lmv_get_remote_perm(struct obd_export *exp,
|
|
const struct lu_fid *fid,
|
|
__u32 suppgid, struct ptlrpc_request **request)
|
|
{
|
|
struct obd_device *obd = exp->exp_obd;
|
|
struct lmv_obd *lmv = &obd->u.lmv;
|
|
struct lmv_tgt_desc *tgt;
|
|
int rc;
|
|
|
|
rc = lmv_check_connect(obd);
|
|
if (rc)
|
|
return rc;
|
|
|
|
tgt = lmv_find_target(lmv, fid);
|
|
if (IS_ERR(tgt))
|
|
return PTR_ERR(tgt);
|
|
|
|
rc = md_get_remote_perm(tgt->ltd_exp, fid, suppgid, request);
|
|
return rc;
|
|
}
|
|
|
|
static int lmv_intent_getattr_async(struct obd_export *exp,
|
|
struct md_enqueue_info *minfo,
|
|
struct ldlm_enqueue_info *einfo)
|
|
{
|
|
struct md_op_data *op_data = &minfo->mi_data;
|
|
struct obd_device *obd = exp->exp_obd;
|
|
struct lmv_obd *lmv = &obd->u.lmv;
|
|
struct lmv_tgt_desc *tgt = NULL;
|
|
int rc;
|
|
|
|
rc = lmv_check_connect(obd);
|
|
if (rc)
|
|
return rc;
|
|
|
|
tgt = lmv_find_target(lmv, &op_data->op_fid1);
|
|
if (IS_ERR(tgt))
|
|
return PTR_ERR(tgt);
|
|
|
|
rc = md_intent_getattr_async(tgt->ltd_exp, minfo, einfo);
|
|
return rc;
|
|
}
|
|
|
|
static int lmv_revalidate_lock(struct obd_export *exp, struct lookup_intent *it,
|
|
struct lu_fid *fid, __u64 *bits)
|
|
{
|
|
struct obd_device *obd = exp->exp_obd;
|
|
struct lmv_obd *lmv = &obd->u.lmv;
|
|
struct lmv_tgt_desc *tgt;
|
|
int rc;
|
|
|
|
rc = lmv_check_connect(obd);
|
|
if (rc)
|
|
return rc;
|
|
|
|
tgt = lmv_find_target(lmv, fid);
|
|
if (IS_ERR(tgt))
|
|
return PTR_ERR(tgt);
|
|
|
|
rc = md_revalidate_lock(tgt->ltd_exp, it, fid, bits);
|
|
return rc;
|
|
}
|
|
|
|
/**
|
|
* For lmv, only need to send request to master MDT, and the master MDT will
|
|
* process with other slave MDTs. The only exception is Q_GETOQUOTA for which
|
|
* we directly fetch data from the slave MDTs.
|
|
*/
|
|
static int lmv_quotactl(struct obd_device *unused, struct obd_export *exp,
|
|
struct obd_quotactl *oqctl)
|
|
{
|
|
struct obd_device *obd = class_exp2obd(exp);
|
|
struct lmv_obd *lmv = &obd->u.lmv;
|
|
struct lmv_tgt_desc *tgt = lmv->tgts[0];
|
|
int rc = 0, i;
|
|
__u64 curspace, curinodes;
|
|
|
|
if (!lmv->desc.ld_tgt_count || !tgt->ltd_active) {
|
|
CERROR("master lmv inactive\n");
|
|
return -EIO;
|
|
}
|
|
|
|
if (oqctl->qc_cmd != Q_GETOQUOTA) {
|
|
rc = obd_quotactl(tgt->ltd_exp, oqctl);
|
|
return rc;
|
|
}
|
|
|
|
curspace = curinodes = 0;
|
|
for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
|
|
int err;
|
|
|
|
tgt = lmv->tgts[i];
|
|
|
|
if (!tgt || !tgt->ltd_exp || tgt->ltd_active == 0)
|
|
continue;
|
|
if (!tgt->ltd_active) {
|
|
CDEBUG(D_HA, "mdt %d is inactive.\n", i);
|
|
continue;
|
|
}
|
|
|
|
err = obd_quotactl(tgt->ltd_exp, oqctl);
|
|
if (err) {
|
|
CERROR("getquota on mdt %d failed. %d\n", i, err);
|
|
if (!rc)
|
|
rc = err;
|
|
} else {
|
|
curspace += oqctl->qc_dqblk.dqb_curspace;
|
|
curinodes += oqctl->qc_dqblk.dqb_curinodes;
|
|
}
|
|
}
|
|
oqctl->qc_dqblk.dqb_curspace = curspace;
|
|
oqctl->qc_dqblk.dqb_curinodes = curinodes;
|
|
|
|
return rc;
|
|
}
|
|
|
|
static int lmv_quotacheck(struct obd_device *unused, struct obd_export *exp,
|
|
struct obd_quotactl *oqctl)
|
|
{
|
|
struct obd_device *obd = class_exp2obd(exp);
|
|
struct lmv_obd *lmv = &obd->u.lmv;
|
|
struct lmv_tgt_desc *tgt;
|
|
int i, rc = 0;
|
|
|
|
for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
|
|
int err;
|
|
|
|
tgt = lmv->tgts[i];
|
|
if (!tgt || !tgt->ltd_exp || !tgt->ltd_active) {
|
|
CERROR("lmv idx %d inactive\n", i);
|
|
return -EIO;
|
|
}
|
|
|
|
err = obd_quotacheck(tgt->ltd_exp, oqctl);
|
|
if (err && !rc)
|
|
rc = err;
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
|
|
static struct obd_ops lmv_obd_ops = {
|
|
.owner = THIS_MODULE,
|
|
.setup = lmv_setup,
|
|
.cleanup = lmv_cleanup,
|
|
.precleanup = lmv_precleanup,
|
|
.process_config = lmv_process_config,
|
|
.connect = lmv_connect,
|
|
.disconnect = lmv_disconnect,
|
|
.statfs = lmv_statfs,
|
|
.get_info = lmv_get_info,
|
|
.set_info_async = lmv_set_info_async,
|
|
.packmd = lmv_packmd,
|
|
.unpackmd = lmv_unpackmd,
|
|
.notify = lmv_notify,
|
|
.get_uuid = lmv_get_uuid,
|
|
.iocontrol = lmv_iocontrol,
|
|
.quotacheck = lmv_quotacheck,
|
|
.quotactl = lmv_quotactl
|
|
};
|
|
|
|
static struct md_ops lmv_md_ops = {
|
|
.getstatus = lmv_getstatus,
|
|
.null_inode = lmv_null_inode,
|
|
.find_cbdata = lmv_find_cbdata,
|
|
.close = lmv_close,
|
|
.create = lmv_create,
|
|
.done_writing = lmv_done_writing,
|
|
.enqueue = lmv_enqueue,
|
|
.getattr = lmv_getattr,
|
|
.getxattr = lmv_getxattr,
|
|
.getattr_name = lmv_getattr_name,
|
|
.intent_lock = lmv_intent_lock,
|
|
.link = lmv_link,
|
|
.rename = lmv_rename,
|
|
.setattr = lmv_setattr,
|
|
.setxattr = lmv_setxattr,
|
|
.sync = lmv_sync,
|
|
.readpage = lmv_readpage,
|
|
.unlink = lmv_unlink,
|
|
.init_ea_size = lmv_init_ea_size,
|
|
.cancel_unused = lmv_cancel_unused,
|
|
.set_lock_data = lmv_set_lock_data,
|
|
.lock_match = lmv_lock_match,
|
|
.get_lustre_md = lmv_get_lustre_md,
|
|
.free_lustre_md = lmv_free_lustre_md,
|
|
.set_open_replay_data = lmv_set_open_replay_data,
|
|
.clear_open_replay_data = lmv_clear_open_replay_data,
|
|
.get_remote_perm = lmv_get_remote_perm,
|
|
.intent_getattr_async = lmv_intent_getattr_async,
|
|
.revalidate_lock = lmv_revalidate_lock
|
|
};
|
|
|
|
static int __init lmv_init(void)
|
|
{
|
|
struct lprocfs_static_vars lvars;
|
|
int rc;
|
|
|
|
lprocfs_lmv_init_vars(&lvars);
|
|
|
|
rc = class_register_type(&lmv_obd_ops, &lmv_md_ops,
|
|
LUSTRE_LMV_NAME, NULL);
|
|
return rc;
|
|
}
|
|
|
|
static void lmv_exit(void)
|
|
{
|
|
class_unregister_type(LUSTRE_LMV_NAME);
|
|
}
|
|
|
|
MODULE_AUTHOR("OpenSFS, Inc. <http://www.lustre.org/>");
|
|
MODULE_DESCRIPTION("Lustre Logical Metadata Volume");
|
|
MODULE_VERSION(LUSTRE_VERSION_STRING);
|
|
MODULE_LICENSE("GPL");
|
|
|
|
module_init(lmv_init);
|
|
module_exit(lmv_exit);
|