3413 lines
92 KiB
C
3413 lines
92 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) 2002, 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_OSC
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#include "../../include/linux/libcfs/libcfs.h"
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#include "../include/lustre_dlm.h"
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#include "../include/lustre_net.h"
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#include "../include/lustre/lustre_user.h"
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#include "../include/obd_cksum.h"
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#include "../include/lustre_ha.h"
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#include "../include/lprocfs_status.h"
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#include "../include/lustre_debug.h"
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#include "../include/lustre_param.h"
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#include "../include/lustre_fid.h"
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#include "../include/obd_class.h"
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#include "../include/obd.h"
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#include "osc_internal.h"
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#include "osc_cl_internal.h"
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atomic_t osc_pool_req_count;
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unsigned int osc_reqpool_maxreqcount;
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struct ptlrpc_request_pool *osc_rq_pool;
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/* max memory used for request pool, unit is MB */
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static unsigned int osc_reqpool_mem_max = 5;
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module_param(osc_reqpool_mem_max, uint, 0444);
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struct osc_brw_async_args {
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struct obdo *aa_oa;
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int aa_requested_nob;
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int aa_nio_count;
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u32 aa_page_count;
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int aa_resends;
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struct brw_page **aa_ppga;
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struct client_obd *aa_cli;
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struct list_head aa_oaps;
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struct list_head aa_exts;
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struct cl_req *aa_clerq;
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};
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struct osc_async_args {
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struct obd_info *aa_oi;
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};
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struct osc_setattr_args {
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struct obdo *sa_oa;
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obd_enqueue_update_f sa_upcall;
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void *sa_cookie;
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};
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struct osc_fsync_args {
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struct obd_info *fa_oi;
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obd_enqueue_update_f fa_upcall;
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void *fa_cookie;
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};
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struct osc_enqueue_args {
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struct obd_export *oa_exp;
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__u64 *oa_flags;
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obd_enqueue_update_f oa_upcall;
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void *oa_cookie;
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struct ost_lvb *oa_lvb;
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struct lustre_handle *oa_lockh;
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struct ldlm_enqueue_info *oa_ei;
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unsigned int oa_agl:1;
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};
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static void osc_release_ppga(struct brw_page **ppga, u32 count);
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static int brw_interpret(const struct lu_env *env,
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struct ptlrpc_request *req, void *data, int rc);
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/* Pack OSC object metadata for disk storage (LE byte order). */
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static int osc_packmd(struct obd_export *exp, struct lov_mds_md **lmmp,
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struct lov_stripe_md *lsm)
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{
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int lmm_size;
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lmm_size = sizeof(**lmmp);
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if (!lmmp)
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return lmm_size;
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if (*lmmp && !lsm) {
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kfree(*lmmp);
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*lmmp = NULL;
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return 0;
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} else if (unlikely(lsm && ostid_id(&lsm->lsm_oi) == 0)) {
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return -EBADF;
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}
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if (!*lmmp) {
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*lmmp = kzalloc(lmm_size, GFP_NOFS);
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if (!*lmmp)
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return -ENOMEM;
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}
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if (lsm)
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ostid_cpu_to_le(&lsm->lsm_oi, &(*lmmp)->lmm_oi);
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return lmm_size;
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}
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/* Unpack OSC object metadata from disk storage (LE byte order). */
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static int osc_unpackmd(struct obd_export *exp, struct lov_stripe_md **lsmp,
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struct lov_mds_md *lmm, int lmm_bytes)
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{
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int lsm_size;
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struct obd_import *imp = class_exp2cliimp(exp);
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if (lmm) {
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if (lmm_bytes < sizeof(*lmm)) {
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CERROR("%s: lov_mds_md too small: %d, need %d\n",
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exp->exp_obd->obd_name, lmm_bytes,
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(int)sizeof(*lmm));
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return -EINVAL;
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}
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/* XXX LOV_MAGIC etc check? */
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if (unlikely(ostid_id(&lmm->lmm_oi) == 0)) {
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CERROR("%s: zero lmm_object_id: rc = %d\n",
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exp->exp_obd->obd_name, -EINVAL);
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return -EINVAL;
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}
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}
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lsm_size = lov_stripe_md_size(1);
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if (!lsmp)
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return lsm_size;
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if (*lsmp && !lmm) {
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kfree((*lsmp)->lsm_oinfo[0]);
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kfree(*lsmp);
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*lsmp = NULL;
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return 0;
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}
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if (!*lsmp) {
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*lsmp = kzalloc(lsm_size, GFP_NOFS);
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if (unlikely(!*lsmp))
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return -ENOMEM;
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(*lsmp)->lsm_oinfo[0] = kzalloc(sizeof(struct lov_oinfo),
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GFP_NOFS);
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if (unlikely(!(*lsmp)->lsm_oinfo[0])) {
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kfree(*lsmp);
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return -ENOMEM;
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}
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loi_init((*lsmp)->lsm_oinfo[0]);
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} else if (unlikely(ostid_id(&(*lsmp)->lsm_oi) == 0)) {
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return -EBADF;
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}
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if (lmm)
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/* XXX zero *lsmp? */
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ostid_le_to_cpu(&lmm->lmm_oi, &(*lsmp)->lsm_oi);
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if (imp &&
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(imp->imp_connect_data.ocd_connect_flags & OBD_CONNECT_MAXBYTES))
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(*lsmp)->lsm_maxbytes = imp->imp_connect_data.ocd_maxbytes;
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else
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(*lsmp)->lsm_maxbytes = LUSTRE_STRIPE_MAXBYTES;
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return lsm_size;
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}
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static inline void osc_pack_req_body(struct ptlrpc_request *req,
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struct obd_info *oinfo)
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{
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struct ost_body *body;
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body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY);
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LASSERT(body);
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lustre_set_wire_obdo(&req->rq_import->imp_connect_data, &body->oa,
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oinfo->oi_oa);
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}
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static int osc_getattr_interpret(const struct lu_env *env,
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struct ptlrpc_request *req,
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struct osc_async_args *aa, int rc)
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{
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struct ost_body *body;
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if (rc != 0)
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goto out;
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body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
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if (body) {
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CDEBUG(D_INODE, "mode: %o\n", body->oa.o_mode);
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lustre_get_wire_obdo(&req->rq_import->imp_connect_data,
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aa->aa_oi->oi_oa, &body->oa);
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/* This should really be sent by the OST */
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aa->aa_oi->oi_oa->o_blksize = DT_MAX_BRW_SIZE;
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aa->aa_oi->oi_oa->o_valid |= OBD_MD_FLBLKSZ;
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} else {
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CDEBUG(D_INFO, "can't unpack ost_body\n");
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rc = -EPROTO;
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aa->aa_oi->oi_oa->o_valid = 0;
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}
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out:
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rc = aa->aa_oi->oi_cb_up(aa->aa_oi, rc);
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return rc;
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}
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static int osc_getattr_async(struct obd_export *exp, struct obd_info *oinfo,
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struct ptlrpc_request_set *set)
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{
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struct ptlrpc_request *req;
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struct osc_async_args *aa;
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int rc;
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req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_OST_GETATTR);
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if (!req)
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return -ENOMEM;
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rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_GETATTR);
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if (rc) {
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ptlrpc_request_free(req);
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return rc;
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}
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osc_pack_req_body(req, oinfo);
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ptlrpc_request_set_replen(req);
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req->rq_interpret_reply = (ptlrpc_interpterer_t)osc_getattr_interpret;
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CLASSERT(sizeof(*aa) <= sizeof(req->rq_async_args));
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aa = ptlrpc_req_async_args(req);
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aa->aa_oi = oinfo;
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ptlrpc_set_add_req(set, req);
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return 0;
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}
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static int osc_getattr(const struct lu_env *env, struct obd_export *exp,
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struct obd_info *oinfo)
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{
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struct ptlrpc_request *req;
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struct ost_body *body;
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int rc;
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req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_OST_GETATTR);
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if (!req)
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return -ENOMEM;
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rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_GETATTR);
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if (rc) {
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ptlrpc_request_free(req);
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return rc;
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}
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osc_pack_req_body(req, oinfo);
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ptlrpc_request_set_replen(req);
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rc = ptlrpc_queue_wait(req);
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if (rc)
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goto out;
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body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
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if (!body) {
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rc = -EPROTO;
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goto out;
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}
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CDEBUG(D_INODE, "mode: %o\n", body->oa.o_mode);
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lustre_get_wire_obdo(&req->rq_import->imp_connect_data, oinfo->oi_oa,
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&body->oa);
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oinfo->oi_oa->o_blksize = cli_brw_size(exp->exp_obd);
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oinfo->oi_oa->o_valid |= OBD_MD_FLBLKSZ;
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out:
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ptlrpc_req_finished(req);
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return rc;
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}
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static int osc_setattr(const struct lu_env *env, struct obd_export *exp,
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struct obd_info *oinfo, struct obd_trans_info *oti)
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{
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struct ptlrpc_request *req;
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struct ost_body *body;
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int rc;
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LASSERT(oinfo->oi_oa->o_valid & OBD_MD_FLGROUP);
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req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_OST_SETATTR);
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if (!req)
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return -ENOMEM;
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rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_SETATTR);
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if (rc) {
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ptlrpc_request_free(req);
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return rc;
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}
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osc_pack_req_body(req, oinfo);
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ptlrpc_request_set_replen(req);
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rc = ptlrpc_queue_wait(req);
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if (rc)
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goto out;
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body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
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if (!body) {
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rc = -EPROTO;
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goto out;
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}
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lustre_get_wire_obdo(&req->rq_import->imp_connect_data, oinfo->oi_oa,
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&body->oa);
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out:
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ptlrpc_req_finished(req);
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return rc;
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}
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static int osc_setattr_interpret(const struct lu_env *env,
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struct ptlrpc_request *req,
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struct osc_setattr_args *sa, int rc)
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{
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struct ost_body *body;
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if (rc != 0)
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goto out;
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body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
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if (!body) {
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rc = -EPROTO;
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goto out;
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}
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lustre_get_wire_obdo(&req->rq_import->imp_connect_data, sa->sa_oa,
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&body->oa);
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out:
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rc = sa->sa_upcall(sa->sa_cookie, rc);
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return rc;
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}
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int osc_setattr_async_base(struct obd_export *exp, struct obd_info *oinfo,
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struct obd_trans_info *oti,
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obd_enqueue_update_f upcall, void *cookie,
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struct ptlrpc_request_set *rqset)
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{
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struct ptlrpc_request *req;
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struct osc_setattr_args *sa;
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int rc;
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req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_OST_SETATTR);
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if (!req)
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return -ENOMEM;
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rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_SETATTR);
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if (rc) {
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ptlrpc_request_free(req);
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return rc;
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}
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if (oti && oinfo->oi_oa->o_valid & OBD_MD_FLCOOKIE)
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oinfo->oi_oa->o_lcookie = *oti->oti_logcookies;
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osc_pack_req_body(req, oinfo);
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ptlrpc_request_set_replen(req);
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/* do mds to ost setattr asynchronously */
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if (!rqset) {
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/* Do not wait for response. */
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ptlrpcd_add_req(req);
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} else {
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req->rq_interpret_reply =
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(ptlrpc_interpterer_t)osc_setattr_interpret;
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CLASSERT(sizeof(*sa) <= sizeof(req->rq_async_args));
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sa = ptlrpc_req_async_args(req);
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sa->sa_oa = oinfo->oi_oa;
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sa->sa_upcall = upcall;
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sa->sa_cookie = cookie;
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|
|
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if (rqset == PTLRPCD_SET)
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ptlrpcd_add_req(req);
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else
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ptlrpc_set_add_req(rqset, req);
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}
|
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|
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return 0;
|
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}
|
|
|
|
static int osc_setattr_async(struct obd_export *exp, struct obd_info *oinfo,
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struct obd_trans_info *oti,
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struct ptlrpc_request_set *rqset)
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{
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return osc_setattr_async_base(exp, oinfo, oti,
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oinfo->oi_cb_up, oinfo, rqset);
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}
|
|
|
|
static int osc_real_create(struct obd_export *exp, struct obdo *oa,
|
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struct lov_stripe_md **ea,
|
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struct obd_trans_info *oti)
|
|
{
|
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struct ptlrpc_request *req;
|
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struct ost_body *body;
|
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struct lov_stripe_md *lsm;
|
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int rc;
|
|
|
|
LASSERT(oa);
|
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LASSERT(ea);
|
|
|
|
lsm = *ea;
|
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if (!lsm) {
|
|
rc = obd_alloc_memmd(exp, &lsm);
|
|
if (rc < 0)
|
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return rc;
|
|
}
|
|
|
|
req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_OST_CREATE);
|
|
if (!req) {
|
|
rc = -ENOMEM;
|
|
goto out;
|
|
}
|
|
|
|
rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_CREATE);
|
|
if (rc) {
|
|
ptlrpc_request_free(req);
|
|
goto out;
|
|
}
|
|
|
|
body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY);
|
|
LASSERT(body);
|
|
|
|
lustre_set_wire_obdo(&req->rq_import->imp_connect_data, &body->oa, oa);
|
|
|
|
ptlrpc_request_set_replen(req);
|
|
|
|
if ((oa->o_valid & OBD_MD_FLFLAGS) &&
|
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oa->o_flags == OBD_FL_DELORPHAN) {
|
|
DEBUG_REQ(D_HA, req,
|
|
"delorphan from OST integration");
|
|
/* Don't resend the delorphan req */
|
|
req->rq_no_resend = req->rq_no_delay = 1;
|
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}
|
|
|
|
rc = ptlrpc_queue_wait(req);
|
|
if (rc)
|
|
goto out_req;
|
|
|
|
body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
|
|
if (!body) {
|
|
rc = -EPROTO;
|
|
goto out_req;
|
|
}
|
|
|
|
CDEBUG(D_INFO, "oa flags %x\n", oa->o_flags);
|
|
lustre_get_wire_obdo(&req->rq_import->imp_connect_data, oa, &body->oa);
|
|
|
|
oa->o_blksize = cli_brw_size(exp->exp_obd);
|
|
oa->o_valid |= OBD_MD_FLBLKSZ;
|
|
|
|
/* XXX LOV STACKING: the lsm that is passed to us from LOV does not
|
|
* have valid lsm_oinfo data structs, so don't go touching that.
|
|
* This needs to be fixed in a big way.
|
|
*/
|
|
lsm->lsm_oi = oa->o_oi;
|
|
*ea = lsm;
|
|
|
|
if (oti) {
|
|
oti->oti_transno = lustre_msg_get_transno(req->rq_repmsg);
|
|
|
|
if (oa->o_valid & OBD_MD_FLCOOKIE) {
|
|
if (!oti->oti_logcookies)
|
|
oti_alloc_cookies(oti, 1);
|
|
*oti->oti_logcookies = oa->o_lcookie;
|
|
}
|
|
}
|
|
|
|
CDEBUG(D_HA, "transno: %lld\n",
|
|
lustre_msg_get_transno(req->rq_repmsg));
|
|
out_req:
|
|
ptlrpc_req_finished(req);
|
|
out:
|
|
if (rc && !*ea)
|
|
obd_free_memmd(exp, &lsm);
|
|
return rc;
|
|
}
|
|
|
|
int osc_punch_base(struct obd_export *exp, struct obd_info *oinfo,
|
|
obd_enqueue_update_f upcall, void *cookie,
|
|
struct ptlrpc_request_set *rqset)
|
|
{
|
|
struct ptlrpc_request *req;
|
|
struct osc_setattr_args *sa;
|
|
struct ost_body *body;
|
|
int rc;
|
|
|
|
req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_OST_PUNCH);
|
|
if (!req)
|
|
return -ENOMEM;
|
|
|
|
rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_PUNCH);
|
|
if (rc) {
|
|
ptlrpc_request_free(req);
|
|
return rc;
|
|
}
|
|
req->rq_request_portal = OST_IO_PORTAL; /* bug 7198 */
|
|
ptlrpc_at_set_req_timeout(req);
|
|
|
|
body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY);
|
|
LASSERT(body);
|
|
lustre_set_wire_obdo(&req->rq_import->imp_connect_data, &body->oa,
|
|
oinfo->oi_oa);
|
|
|
|
ptlrpc_request_set_replen(req);
|
|
|
|
req->rq_interpret_reply = (ptlrpc_interpterer_t)osc_setattr_interpret;
|
|
CLASSERT(sizeof(*sa) <= sizeof(req->rq_async_args));
|
|
sa = ptlrpc_req_async_args(req);
|
|
sa->sa_oa = oinfo->oi_oa;
|
|
sa->sa_upcall = upcall;
|
|
sa->sa_cookie = cookie;
|
|
if (rqset == PTLRPCD_SET)
|
|
ptlrpcd_add_req(req);
|
|
else
|
|
ptlrpc_set_add_req(rqset, req);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int osc_sync_interpret(const struct lu_env *env,
|
|
struct ptlrpc_request *req,
|
|
void *arg, int rc)
|
|
{
|
|
struct osc_fsync_args *fa = arg;
|
|
struct ost_body *body;
|
|
|
|
if (rc)
|
|
goto out;
|
|
|
|
body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
|
|
if (!body) {
|
|
CERROR("can't unpack ost_body\n");
|
|
rc = -EPROTO;
|
|
goto out;
|
|
}
|
|
|
|
*fa->fa_oi->oi_oa = body->oa;
|
|
out:
|
|
rc = fa->fa_upcall(fa->fa_cookie, rc);
|
|
return rc;
|
|
}
|
|
|
|
int osc_sync_base(struct obd_export *exp, struct obd_info *oinfo,
|
|
obd_enqueue_update_f upcall, void *cookie,
|
|
struct ptlrpc_request_set *rqset)
|
|
{
|
|
struct ptlrpc_request *req;
|
|
struct ost_body *body;
|
|
struct osc_fsync_args *fa;
|
|
int rc;
|
|
|
|
req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_OST_SYNC);
|
|
if (!req)
|
|
return -ENOMEM;
|
|
|
|
rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_SYNC);
|
|
if (rc) {
|
|
ptlrpc_request_free(req);
|
|
return rc;
|
|
}
|
|
|
|
/* overload the size and blocks fields in the oa with start/end */
|
|
body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY);
|
|
LASSERT(body);
|
|
lustre_set_wire_obdo(&req->rq_import->imp_connect_data, &body->oa,
|
|
oinfo->oi_oa);
|
|
|
|
ptlrpc_request_set_replen(req);
|
|
req->rq_interpret_reply = osc_sync_interpret;
|
|
|
|
CLASSERT(sizeof(*fa) <= sizeof(req->rq_async_args));
|
|
fa = ptlrpc_req_async_args(req);
|
|
fa->fa_oi = oinfo;
|
|
fa->fa_upcall = upcall;
|
|
fa->fa_cookie = cookie;
|
|
|
|
if (rqset == PTLRPCD_SET)
|
|
ptlrpcd_add_req(req);
|
|
else
|
|
ptlrpc_set_add_req(rqset, req);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Find and cancel locally locks matched by @mode in the resource found by
|
|
* @objid. Found locks are added into @cancel list. Returns the amount of
|
|
* locks added to @cancels list.
|
|
*/
|
|
static int osc_resource_get_unused(struct obd_export *exp, struct obdo *oa,
|
|
struct list_head *cancels,
|
|
enum ldlm_mode mode, __u64 lock_flags)
|
|
{
|
|
struct ldlm_namespace *ns = exp->exp_obd->obd_namespace;
|
|
struct ldlm_res_id res_id;
|
|
struct ldlm_resource *res;
|
|
int count;
|
|
|
|
/* Return, i.e. cancel nothing, only if ELC is supported (flag in
|
|
* export) but disabled through procfs (flag in NS).
|
|
*
|
|
* This distinguishes from a case when ELC is not supported originally,
|
|
* when we still want to cancel locks in advance and just cancel them
|
|
* locally, without sending any RPC.
|
|
*/
|
|
if (exp_connect_cancelset(exp) && !ns_connect_cancelset(ns))
|
|
return 0;
|
|
|
|
ostid_build_res_name(&oa->o_oi, &res_id);
|
|
res = ldlm_resource_get(ns, NULL, &res_id, 0, 0);
|
|
if (!res)
|
|
return 0;
|
|
|
|
LDLM_RESOURCE_ADDREF(res);
|
|
count = ldlm_cancel_resource_local(res, cancels, NULL, mode,
|
|
lock_flags, 0, NULL);
|
|
LDLM_RESOURCE_DELREF(res);
|
|
ldlm_resource_putref(res);
|
|
return count;
|
|
}
|
|
|
|
static int osc_destroy_interpret(const struct lu_env *env,
|
|
struct ptlrpc_request *req, void *data,
|
|
int rc)
|
|
{
|
|
struct client_obd *cli = &req->rq_import->imp_obd->u.cli;
|
|
|
|
atomic_dec(&cli->cl_destroy_in_flight);
|
|
wake_up(&cli->cl_destroy_waitq);
|
|
return 0;
|
|
}
|
|
|
|
static int osc_can_send_destroy(struct client_obd *cli)
|
|
{
|
|
if (atomic_inc_return(&cli->cl_destroy_in_flight) <=
|
|
cli->cl_max_rpcs_in_flight) {
|
|
/* The destroy request can be sent */
|
|
return 1;
|
|
}
|
|
if (atomic_dec_return(&cli->cl_destroy_in_flight) <
|
|
cli->cl_max_rpcs_in_flight) {
|
|
/*
|
|
* The counter has been modified between the two atomic
|
|
* operations.
|
|
*/
|
|
wake_up(&cli->cl_destroy_waitq);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int osc_create(const struct lu_env *env, struct obd_export *exp,
|
|
struct obdo *oa, struct lov_stripe_md **ea,
|
|
struct obd_trans_info *oti)
|
|
{
|
|
int rc = 0;
|
|
|
|
LASSERT(oa);
|
|
LASSERT(ea);
|
|
LASSERT(oa->o_valid & OBD_MD_FLGROUP);
|
|
|
|
if ((oa->o_valid & OBD_MD_FLFLAGS) &&
|
|
oa->o_flags == OBD_FL_RECREATE_OBJS) {
|
|
return osc_real_create(exp, oa, ea, oti);
|
|
}
|
|
|
|
if (!fid_seq_is_mdt(ostid_seq(&oa->o_oi)))
|
|
return osc_real_create(exp, oa, ea, oti);
|
|
|
|
/* we should not get here anymore */
|
|
LBUG();
|
|
|
|
return rc;
|
|
}
|
|
|
|
/* Destroy requests can be async always on the client, and we don't even really
|
|
* care about the return code since the client cannot do anything at all about
|
|
* a destroy failure.
|
|
* When the MDS is unlinking a filename, it saves the file objects into a
|
|
* recovery llog, and these object records are cancelled when the OST reports
|
|
* they were destroyed and sync'd to disk (i.e. transaction committed).
|
|
* If the client dies, or the OST is down when the object should be destroyed,
|
|
* the records are not cancelled, and when the OST reconnects to the MDS next,
|
|
* it will retrieve the llog unlink logs and then sends the log cancellation
|
|
* cookies to the MDS after committing destroy transactions.
|
|
*/
|
|
static int osc_destroy(const struct lu_env *env, struct obd_export *exp,
|
|
struct obdo *oa, struct lov_stripe_md *ea,
|
|
struct obd_trans_info *oti, struct obd_export *md_export)
|
|
{
|
|
struct client_obd *cli = &exp->exp_obd->u.cli;
|
|
struct ptlrpc_request *req;
|
|
struct ost_body *body;
|
|
LIST_HEAD(cancels);
|
|
int rc, count;
|
|
|
|
if (!oa) {
|
|
CDEBUG(D_INFO, "oa NULL\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
count = osc_resource_get_unused(exp, oa, &cancels, LCK_PW,
|
|
LDLM_FL_DISCARD_DATA);
|
|
|
|
req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_OST_DESTROY);
|
|
if (!req) {
|
|
ldlm_lock_list_put(&cancels, l_bl_ast, count);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
rc = ldlm_prep_elc_req(exp, req, LUSTRE_OST_VERSION, OST_DESTROY,
|
|
0, &cancels, count);
|
|
if (rc) {
|
|
ptlrpc_request_free(req);
|
|
return rc;
|
|
}
|
|
|
|
req->rq_request_portal = OST_IO_PORTAL; /* bug 7198 */
|
|
ptlrpc_at_set_req_timeout(req);
|
|
|
|
if (oti && oa->o_valid & OBD_MD_FLCOOKIE)
|
|
oa->o_lcookie = *oti->oti_logcookies;
|
|
body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY);
|
|
LASSERT(body);
|
|
lustre_set_wire_obdo(&req->rq_import->imp_connect_data, &body->oa, oa);
|
|
|
|
ptlrpc_request_set_replen(req);
|
|
|
|
/* If osc_destroy is for destroying the unlink orphan,
|
|
* sent from MDT to OST, which should not be blocked here,
|
|
* because the process might be triggered by ptlrpcd, and
|
|
* it is not good to block ptlrpcd thread (b=16006
|
|
**/
|
|
if (!(oa->o_flags & OBD_FL_DELORPHAN)) {
|
|
req->rq_interpret_reply = osc_destroy_interpret;
|
|
if (!osc_can_send_destroy(cli)) {
|
|
struct l_wait_info lwi = LWI_INTR(LWI_ON_SIGNAL_NOOP,
|
|
NULL);
|
|
|
|
/*
|
|
* Wait until the number of on-going destroy RPCs drops
|
|
* under max_rpc_in_flight
|
|
*/
|
|
l_wait_event_exclusive(cli->cl_destroy_waitq,
|
|
osc_can_send_destroy(cli), &lwi);
|
|
}
|
|
}
|
|
|
|
/* Do not wait for response */
|
|
ptlrpcd_add_req(req);
|
|
return 0;
|
|
}
|
|
|
|
static void osc_announce_cached(struct client_obd *cli, struct obdo *oa,
|
|
long writing_bytes)
|
|
{
|
|
u32 bits = OBD_MD_FLBLOCKS|OBD_MD_FLGRANT;
|
|
|
|
LASSERT(!(oa->o_valid & bits));
|
|
|
|
oa->o_valid |= bits;
|
|
client_obd_list_lock(&cli->cl_loi_list_lock);
|
|
oa->o_dirty = cli->cl_dirty;
|
|
if (unlikely(cli->cl_dirty - cli->cl_dirty_transit >
|
|
cli->cl_dirty_max)) {
|
|
CERROR("dirty %lu - %lu > dirty_max %lu\n",
|
|
cli->cl_dirty, cli->cl_dirty_transit, cli->cl_dirty_max);
|
|
oa->o_undirty = 0;
|
|
} else if (unlikely(atomic_read(&obd_dirty_pages) -
|
|
atomic_read(&obd_dirty_transit_pages) >
|
|
(long)(obd_max_dirty_pages + 1))) {
|
|
/* The atomic_read() allowing the atomic_inc() are
|
|
* not covered by a lock thus they may safely race and trip
|
|
* this CERROR() unless we add in a small fudge factor (+1).
|
|
*/
|
|
CERROR("dirty %d - %d > system dirty_max %d\n",
|
|
atomic_read(&obd_dirty_pages),
|
|
atomic_read(&obd_dirty_transit_pages),
|
|
obd_max_dirty_pages);
|
|
oa->o_undirty = 0;
|
|
} else if (unlikely(cli->cl_dirty_max - cli->cl_dirty > 0x7fffffff)) {
|
|
CERROR("dirty %lu - dirty_max %lu too big???\n",
|
|
cli->cl_dirty, cli->cl_dirty_max);
|
|
oa->o_undirty = 0;
|
|
} else {
|
|
long max_in_flight = (cli->cl_max_pages_per_rpc <<
|
|
PAGE_SHIFT)*
|
|
(cli->cl_max_rpcs_in_flight + 1);
|
|
oa->o_undirty = max(cli->cl_dirty_max, max_in_flight);
|
|
}
|
|
oa->o_grant = cli->cl_avail_grant + cli->cl_reserved_grant;
|
|
oa->o_dropped = cli->cl_lost_grant;
|
|
cli->cl_lost_grant = 0;
|
|
client_obd_list_unlock(&cli->cl_loi_list_lock);
|
|
CDEBUG(D_CACHE, "dirty: %llu undirty: %u dropped %u grant: %llu\n",
|
|
oa->o_dirty, oa->o_undirty, oa->o_dropped, oa->o_grant);
|
|
|
|
}
|
|
|
|
void osc_update_next_shrink(struct client_obd *cli)
|
|
{
|
|
cli->cl_next_shrink_grant =
|
|
cfs_time_shift(cli->cl_grant_shrink_interval);
|
|
CDEBUG(D_CACHE, "next time %ld to shrink grant\n",
|
|
cli->cl_next_shrink_grant);
|
|
}
|
|
|
|
static void __osc_update_grant(struct client_obd *cli, u64 grant)
|
|
{
|
|
client_obd_list_lock(&cli->cl_loi_list_lock);
|
|
cli->cl_avail_grant += grant;
|
|
client_obd_list_unlock(&cli->cl_loi_list_lock);
|
|
}
|
|
|
|
static void osc_update_grant(struct client_obd *cli, struct ost_body *body)
|
|
{
|
|
if (body->oa.o_valid & OBD_MD_FLGRANT) {
|
|
CDEBUG(D_CACHE, "got %llu extra grant\n", body->oa.o_grant);
|
|
__osc_update_grant(cli, body->oa.o_grant);
|
|
}
|
|
}
|
|
|
|
static int osc_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);
|
|
|
|
static int osc_shrink_grant_interpret(const struct lu_env *env,
|
|
struct ptlrpc_request *req,
|
|
void *aa, int rc)
|
|
{
|
|
struct client_obd *cli = &req->rq_import->imp_obd->u.cli;
|
|
struct obdo *oa = ((struct osc_brw_async_args *)aa)->aa_oa;
|
|
struct ost_body *body;
|
|
|
|
if (rc != 0) {
|
|
__osc_update_grant(cli, oa->o_grant);
|
|
goto out;
|
|
}
|
|
|
|
body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
|
|
LASSERT(body);
|
|
osc_update_grant(cli, body);
|
|
out:
|
|
kmem_cache_free(obdo_cachep, oa);
|
|
return rc;
|
|
}
|
|
|
|
static void osc_shrink_grant_local(struct client_obd *cli, struct obdo *oa)
|
|
{
|
|
client_obd_list_lock(&cli->cl_loi_list_lock);
|
|
oa->o_grant = cli->cl_avail_grant / 4;
|
|
cli->cl_avail_grant -= oa->o_grant;
|
|
client_obd_list_unlock(&cli->cl_loi_list_lock);
|
|
if (!(oa->o_valid & OBD_MD_FLFLAGS)) {
|
|
oa->o_valid |= OBD_MD_FLFLAGS;
|
|
oa->o_flags = 0;
|
|
}
|
|
oa->o_flags |= OBD_FL_SHRINK_GRANT;
|
|
osc_update_next_shrink(cli);
|
|
}
|
|
|
|
/* Shrink the current grant, either from some large amount to enough for a
|
|
* full set of in-flight RPCs, or if we have already shrunk to that limit
|
|
* then to enough for a single RPC. This avoids keeping more grant than
|
|
* needed, and avoids shrinking the grant piecemeal.
|
|
*/
|
|
static int osc_shrink_grant(struct client_obd *cli)
|
|
{
|
|
__u64 target_bytes = (cli->cl_max_rpcs_in_flight + 1) *
|
|
(cli->cl_max_pages_per_rpc << PAGE_SHIFT);
|
|
|
|
client_obd_list_lock(&cli->cl_loi_list_lock);
|
|
if (cli->cl_avail_grant <= target_bytes)
|
|
target_bytes = cli->cl_max_pages_per_rpc << PAGE_SHIFT;
|
|
client_obd_list_unlock(&cli->cl_loi_list_lock);
|
|
|
|
return osc_shrink_grant_to_target(cli, target_bytes);
|
|
}
|
|
|
|
int osc_shrink_grant_to_target(struct client_obd *cli, __u64 target_bytes)
|
|
{
|
|
int rc = 0;
|
|
struct ost_body *body;
|
|
|
|
client_obd_list_lock(&cli->cl_loi_list_lock);
|
|
/* Don't shrink if we are already above or below the desired limit
|
|
* We don't want to shrink below a single RPC, as that will negatively
|
|
* impact block allocation and long-term performance.
|
|
*/
|
|
if (target_bytes < cli->cl_max_pages_per_rpc << PAGE_SHIFT)
|
|
target_bytes = cli->cl_max_pages_per_rpc << PAGE_SHIFT;
|
|
|
|
if (target_bytes >= cli->cl_avail_grant) {
|
|
client_obd_list_unlock(&cli->cl_loi_list_lock);
|
|
return 0;
|
|
}
|
|
client_obd_list_unlock(&cli->cl_loi_list_lock);
|
|
|
|
body = kzalloc(sizeof(*body), GFP_NOFS);
|
|
if (!body)
|
|
return -ENOMEM;
|
|
|
|
osc_announce_cached(cli, &body->oa, 0);
|
|
|
|
client_obd_list_lock(&cli->cl_loi_list_lock);
|
|
body->oa.o_grant = cli->cl_avail_grant - target_bytes;
|
|
cli->cl_avail_grant = target_bytes;
|
|
client_obd_list_unlock(&cli->cl_loi_list_lock);
|
|
if (!(body->oa.o_valid & OBD_MD_FLFLAGS)) {
|
|
body->oa.o_valid |= OBD_MD_FLFLAGS;
|
|
body->oa.o_flags = 0;
|
|
}
|
|
body->oa.o_flags |= OBD_FL_SHRINK_GRANT;
|
|
osc_update_next_shrink(cli);
|
|
|
|
rc = osc_set_info_async(NULL, cli->cl_import->imp_obd->obd_self_export,
|
|
sizeof(KEY_GRANT_SHRINK), KEY_GRANT_SHRINK,
|
|
sizeof(*body), body, NULL);
|
|
if (rc != 0)
|
|
__osc_update_grant(cli, body->oa.o_grant);
|
|
kfree(body);
|
|
return rc;
|
|
}
|
|
|
|
static int osc_should_shrink_grant(struct client_obd *client)
|
|
{
|
|
unsigned long time = cfs_time_current();
|
|
unsigned long next_shrink = client->cl_next_shrink_grant;
|
|
|
|
if ((client->cl_import->imp_connect_data.ocd_connect_flags &
|
|
OBD_CONNECT_GRANT_SHRINK) == 0)
|
|
return 0;
|
|
|
|
if (cfs_time_aftereq(time, next_shrink - 5 * CFS_TICK)) {
|
|
/* Get the current RPC size directly, instead of going via:
|
|
* cli_brw_size(obd->u.cli.cl_import->imp_obd->obd_self_export)
|
|
* Keep comment here so that it can be found by searching.
|
|
*/
|
|
int brw_size = client->cl_max_pages_per_rpc << PAGE_SHIFT;
|
|
|
|
if (client->cl_import->imp_state == LUSTRE_IMP_FULL &&
|
|
client->cl_avail_grant > brw_size)
|
|
return 1;
|
|
|
|
osc_update_next_shrink(client);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int osc_grant_shrink_grant_cb(struct timeout_item *item, void *data)
|
|
{
|
|
struct client_obd *client;
|
|
|
|
list_for_each_entry(client, &item->ti_obd_list, cl_grant_shrink_list) {
|
|
if (osc_should_shrink_grant(client))
|
|
osc_shrink_grant(client);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int osc_add_shrink_grant(struct client_obd *client)
|
|
{
|
|
int rc;
|
|
|
|
rc = ptlrpc_add_timeout_client(client->cl_grant_shrink_interval,
|
|
TIMEOUT_GRANT,
|
|
osc_grant_shrink_grant_cb, NULL,
|
|
&client->cl_grant_shrink_list);
|
|
if (rc) {
|
|
CERROR("add grant client %s error %d\n",
|
|
client->cl_import->imp_obd->obd_name, rc);
|
|
return rc;
|
|
}
|
|
CDEBUG(D_CACHE, "add grant client %s\n",
|
|
client->cl_import->imp_obd->obd_name);
|
|
osc_update_next_shrink(client);
|
|
return 0;
|
|
}
|
|
|
|
static int osc_del_shrink_grant(struct client_obd *client)
|
|
{
|
|
return ptlrpc_del_timeout_client(&client->cl_grant_shrink_list,
|
|
TIMEOUT_GRANT);
|
|
}
|
|
|
|
static void osc_init_grant(struct client_obd *cli, struct obd_connect_data *ocd)
|
|
{
|
|
/*
|
|
* ocd_grant is the total grant amount we're expect to hold: if we've
|
|
* been evicted, it's the new avail_grant amount, cl_dirty will drop
|
|
* to 0 as inflight RPCs fail out; otherwise, it's avail_grant + dirty.
|
|
*
|
|
* race is tolerable here: if we're evicted, but imp_state already
|
|
* left EVICTED state, then cl_dirty must be 0 already.
|
|
*/
|
|
client_obd_list_lock(&cli->cl_loi_list_lock);
|
|
if (cli->cl_import->imp_state == LUSTRE_IMP_EVICTED)
|
|
cli->cl_avail_grant = ocd->ocd_grant;
|
|
else
|
|
cli->cl_avail_grant = ocd->ocd_grant - cli->cl_dirty;
|
|
|
|
if (cli->cl_avail_grant < 0) {
|
|
CWARN("%s: available grant < 0: avail/ocd/dirty %ld/%u/%ld\n",
|
|
cli->cl_import->imp_obd->obd_name, cli->cl_avail_grant,
|
|
ocd->ocd_grant, cli->cl_dirty);
|
|
/* workaround for servers which do not have the patch from
|
|
* LU-2679
|
|
*/
|
|
cli->cl_avail_grant = ocd->ocd_grant;
|
|
}
|
|
|
|
/* determine the appropriate chunk size used by osc_extent. */
|
|
cli->cl_chunkbits = max_t(int, PAGE_SHIFT, ocd->ocd_blocksize);
|
|
client_obd_list_unlock(&cli->cl_loi_list_lock);
|
|
|
|
CDEBUG(D_CACHE, "%s, setting cl_avail_grant: %ld cl_lost_grant: %ld chunk bits: %d\n",
|
|
cli->cl_import->imp_obd->obd_name,
|
|
cli->cl_avail_grant, cli->cl_lost_grant, cli->cl_chunkbits);
|
|
|
|
if (ocd->ocd_connect_flags & OBD_CONNECT_GRANT_SHRINK &&
|
|
list_empty(&cli->cl_grant_shrink_list))
|
|
osc_add_shrink_grant(cli);
|
|
}
|
|
|
|
/* We assume that the reason this OSC got a short read is because it read
|
|
* beyond the end of a stripe file; i.e. lustre is reading a sparse file
|
|
* via the LOV, and it _knows_ it's reading inside the file, it's just that
|
|
* this stripe never got written at or beyond this stripe offset yet.
|
|
*/
|
|
static void handle_short_read(int nob_read, u32 page_count,
|
|
struct brw_page **pga)
|
|
{
|
|
char *ptr;
|
|
int i = 0;
|
|
|
|
/* skip bytes read OK */
|
|
while (nob_read > 0) {
|
|
LASSERT(page_count > 0);
|
|
|
|
if (pga[i]->count > nob_read) {
|
|
/* EOF inside this page */
|
|
ptr = kmap(pga[i]->pg) +
|
|
(pga[i]->off & ~CFS_PAGE_MASK);
|
|
memset(ptr + nob_read, 0, pga[i]->count - nob_read);
|
|
kunmap(pga[i]->pg);
|
|
page_count--;
|
|
i++;
|
|
break;
|
|
}
|
|
|
|
nob_read -= pga[i]->count;
|
|
page_count--;
|
|
i++;
|
|
}
|
|
|
|
/* zero remaining pages */
|
|
while (page_count-- > 0) {
|
|
ptr = kmap(pga[i]->pg) + (pga[i]->off & ~CFS_PAGE_MASK);
|
|
memset(ptr, 0, pga[i]->count);
|
|
kunmap(pga[i]->pg);
|
|
i++;
|
|
}
|
|
}
|
|
|
|
static int check_write_rcs(struct ptlrpc_request *req,
|
|
int requested_nob, int niocount,
|
|
u32 page_count, struct brw_page **pga)
|
|
{
|
|
int i;
|
|
__u32 *remote_rcs;
|
|
|
|
remote_rcs = req_capsule_server_sized_get(&req->rq_pill, &RMF_RCS,
|
|
sizeof(*remote_rcs) *
|
|
niocount);
|
|
if (!remote_rcs) {
|
|
CDEBUG(D_INFO, "Missing/short RC vector on BRW_WRITE reply\n");
|
|
return -EPROTO;
|
|
}
|
|
|
|
/* return error if any niobuf was in error */
|
|
for (i = 0; i < niocount; i++) {
|
|
if ((int)remote_rcs[i] < 0)
|
|
return remote_rcs[i];
|
|
|
|
if (remote_rcs[i] != 0) {
|
|
CDEBUG(D_INFO, "rc[%d] invalid (%d) req %p\n",
|
|
i, remote_rcs[i], req);
|
|
return -EPROTO;
|
|
}
|
|
}
|
|
|
|
if (req->rq_bulk->bd_nob_transferred != requested_nob) {
|
|
CERROR("Unexpected # bytes transferred: %d (requested %d)\n",
|
|
req->rq_bulk->bd_nob_transferred, requested_nob);
|
|
return -EPROTO;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static inline int can_merge_pages(struct brw_page *p1, struct brw_page *p2)
|
|
{
|
|
if (p1->flag != p2->flag) {
|
|
unsigned mask = ~(OBD_BRW_FROM_GRANT | OBD_BRW_NOCACHE |
|
|
OBD_BRW_SYNC | OBD_BRW_ASYNC|OBD_BRW_NOQUOTA);
|
|
|
|
/* warn if we try to combine flags that we don't know to be
|
|
* safe to combine
|
|
*/
|
|
if (unlikely((p1->flag & mask) != (p2->flag & mask))) {
|
|
CWARN("Saw flags 0x%x and 0x%x in the same brw, please report this at http://bugs.whamcloud.com/\n",
|
|
p1->flag, p2->flag);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
return (p1->off + p1->count == p2->off);
|
|
}
|
|
|
|
static u32 osc_checksum_bulk(int nob, u32 pg_count,
|
|
struct brw_page **pga, int opc,
|
|
enum cksum_type cksum_type)
|
|
{
|
|
__u32 cksum;
|
|
int i = 0;
|
|
struct cfs_crypto_hash_desc *hdesc;
|
|
unsigned int bufsize;
|
|
int err;
|
|
unsigned char cfs_alg = cksum_obd2cfs(cksum_type);
|
|
|
|
LASSERT(pg_count > 0);
|
|
|
|
hdesc = cfs_crypto_hash_init(cfs_alg, NULL, 0);
|
|
if (IS_ERR(hdesc)) {
|
|
CERROR("Unable to initialize checksum hash %s\n",
|
|
cfs_crypto_hash_name(cfs_alg));
|
|
return PTR_ERR(hdesc);
|
|
}
|
|
|
|
while (nob > 0 && pg_count > 0) {
|
|
int count = pga[i]->count > nob ? nob : pga[i]->count;
|
|
|
|
/* corrupt the data before we compute the checksum, to
|
|
* simulate an OST->client data error
|
|
*/
|
|
if (i == 0 && opc == OST_READ &&
|
|
OBD_FAIL_CHECK(OBD_FAIL_OSC_CHECKSUM_RECEIVE)) {
|
|
unsigned char *ptr = kmap(pga[i]->pg);
|
|
int off = pga[i]->off & ~CFS_PAGE_MASK;
|
|
|
|
memcpy(ptr + off, "bad1", min(4, nob));
|
|
kunmap(pga[i]->pg);
|
|
}
|
|
cfs_crypto_hash_update_page(hdesc, pga[i]->pg,
|
|
pga[i]->off & ~CFS_PAGE_MASK,
|
|
count);
|
|
CDEBUG(D_PAGE,
|
|
"page %p map %p index %lu flags %lx count %u priv %0lx: off %d\n",
|
|
pga[i]->pg, pga[i]->pg->mapping, pga[i]->pg->index,
|
|
(long)pga[i]->pg->flags, page_count(pga[i]->pg),
|
|
page_private(pga[i]->pg),
|
|
(int)(pga[i]->off & ~CFS_PAGE_MASK));
|
|
|
|
nob -= pga[i]->count;
|
|
pg_count--;
|
|
i++;
|
|
}
|
|
|
|
bufsize = 4;
|
|
err = cfs_crypto_hash_final(hdesc, (unsigned char *)&cksum, &bufsize);
|
|
|
|
if (err)
|
|
cfs_crypto_hash_final(hdesc, NULL, NULL);
|
|
|
|
/* For sending we only compute the wrong checksum instead
|
|
* of corrupting the data so it is still correct on a redo
|
|
*/
|
|
if (opc == OST_WRITE && OBD_FAIL_CHECK(OBD_FAIL_OSC_CHECKSUM_SEND))
|
|
cksum++;
|
|
|
|
return cksum;
|
|
}
|
|
|
|
static int osc_brw_prep_request(int cmd, struct client_obd *cli,
|
|
struct obdo *oa,
|
|
struct lov_stripe_md *lsm, u32 page_count,
|
|
struct brw_page **pga,
|
|
struct ptlrpc_request **reqp,
|
|
int reserve,
|
|
int resend)
|
|
{
|
|
struct ptlrpc_request *req;
|
|
struct ptlrpc_bulk_desc *desc;
|
|
struct ost_body *body;
|
|
struct obd_ioobj *ioobj;
|
|
struct niobuf_remote *niobuf;
|
|
int niocount, i, requested_nob, opc, rc;
|
|
struct osc_brw_async_args *aa;
|
|
struct req_capsule *pill;
|
|
struct brw_page *pg_prev;
|
|
|
|
if (OBD_FAIL_CHECK(OBD_FAIL_OSC_BRW_PREP_REQ))
|
|
return -ENOMEM; /* Recoverable */
|
|
if (OBD_FAIL_CHECK(OBD_FAIL_OSC_BRW_PREP_REQ2))
|
|
return -EINVAL; /* Fatal */
|
|
|
|
if ((cmd & OBD_BRW_WRITE) != 0) {
|
|
opc = OST_WRITE;
|
|
req = ptlrpc_request_alloc_pool(cli->cl_import,
|
|
osc_rq_pool,
|
|
&RQF_OST_BRW_WRITE);
|
|
} else {
|
|
opc = OST_READ;
|
|
req = ptlrpc_request_alloc(cli->cl_import, &RQF_OST_BRW_READ);
|
|
}
|
|
if (!req)
|
|
return -ENOMEM;
|
|
|
|
for (niocount = i = 1; i < page_count; i++) {
|
|
if (!can_merge_pages(pga[i - 1], pga[i]))
|
|
niocount++;
|
|
}
|
|
|
|
pill = &req->rq_pill;
|
|
req_capsule_set_size(pill, &RMF_OBD_IOOBJ, RCL_CLIENT,
|
|
sizeof(*ioobj));
|
|
req_capsule_set_size(pill, &RMF_NIOBUF_REMOTE, RCL_CLIENT,
|
|
niocount * sizeof(*niobuf));
|
|
|
|
rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, opc);
|
|
if (rc) {
|
|
ptlrpc_request_free(req);
|
|
return rc;
|
|
}
|
|
req->rq_request_portal = OST_IO_PORTAL; /* bug 7198 */
|
|
ptlrpc_at_set_req_timeout(req);
|
|
/* ask ptlrpc not to resend on EINPROGRESS since BRWs have their own
|
|
* retry logic
|
|
*/
|
|
req->rq_no_retry_einprogress = 1;
|
|
|
|
desc = ptlrpc_prep_bulk_imp(req, page_count,
|
|
cli->cl_import->imp_connect_data.ocd_brw_size >> LNET_MTU_BITS,
|
|
opc == OST_WRITE ? BULK_GET_SOURCE : BULK_PUT_SINK,
|
|
OST_BULK_PORTAL);
|
|
|
|
if (!desc) {
|
|
rc = -ENOMEM;
|
|
goto out;
|
|
}
|
|
/* NB request now owns desc and will free it when it gets freed */
|
|
|
|
body = req_capsule_client_get(pill, &RMF_OST_BODY);
|
|
ioobj = req_capsule_client_get(pill, &RMF_OBD_IOOBJ);
|
|
niobuf = req_capsule_client_get(pill, &RMF_NIOBUF_REMOTE);
|
|
LASSERT(body && ioobj && niobuf);
|
|
|
|
lustre_set_wire_obdo(&req->rq_import->imp_connect_data, &body->oa, oa);
|
|
|
|
obdo_to_ioobj(oa, ioobj);
|
|
ioobj->ioo_bufcnt = niocount;
|
|
/* The high bits of ioo_max_brw tells server _maximum_ number of bulks
|
|
* that might be send for this request. The actual number is decided
|
|
* when the RPC is finally sent in ptlrpc_register_bulk(). It sends
|
|
* "max - 1" for old client compatibility sending "0", and also so the
|
|
* the actual maximum is a power-of-two number, not one less. LU-1431
|
|
*/
|
|
ioobj_max_brw_set(ioobj, desc->bd_md_max_brw);
|
|
LASSERT(page_count > 0);
|
|
pg_prev = pga[0];
|
|
for (requested_nob = i = 0; i < page_count; i++, niobuf++) {
|
|
struct brw_page *pg = pga[i];
|
|
int poff = pg->off & ~CFS_PAGE_MASK;
|
|
|
|
LASSERT(pg->count > 0);
|
|
/* make sure there is no gap in the middle of page array */
|
|
LASSERTF(page_count == 1 ||
|
|
(ergo(i == 0, poff + pg->count == PAGE_SIZE) &&
|
|
ergo(i > 0 && i < page_count - 1,
|
|
poff == 0 && pg->count == PAGE_SIZE) &&
|
|
ergo(i == page_count - 1, poff == 0)),
|
|
"i: %d/%d pg: %p off: %llu, count: %u\n",
|
|
i, page_count, pg, pg->off, pg->count);
|
|
LASSERTF(i == 0 || pg->off > pg_prev->off,
|
|
"i %d p_c %u pg %p [pri %lu ind %lu] off %llu prev_pg %p [pri %lu ind %lu] off %llu\n",
|
|
i, page_count,
|
|
pg->pg, page_private(pg->pg), pg->pg->index, pg->off,
|
|
pg_prev->pg, page_private(pg_prev->pg),
|
|
pg_prev->pg->index, pg_prev->off);
|
|
LASSERT((pga[0]->flag & OBD_BRW_SRVLOCK) ==
|
|
(pg->flag & OBD_BRW_SRVLOCK));
|
|
|
|
ptlrpc_prep_bulk_page_pin(desc, pg->pg, poff, pg->count);
|
|
requested_nob += pg->count;
|
|
|
|
if (i > 0 && can_merge_pages(pg_prev, pg)) {
|
|
niobuf--;
|
|
niobuf->len += pg->count;
|
|
} else {
|
|
niobuf->offset = pg->off;
|
|
niobuf->len = pg->count;
|
|
niobuf->flags = pg->flag;
|
|
}
|
|
pg_prev = pg;
|
|
}
|
|
|
|
LASSERTF((void *)(niobuf - niocount) ==
|
|
req_capsule_client_get(&req->rq_pill, &RMF_NIOBUF_REMOTE),
|
|
"want %p - real %p\n", req_capsule_client_get(&req->rq_pill,
|
|
&RMF_NIOBUF_REMOTE), (void *)(niobuf - niocount));
|
|
|
|
osc_announce_cached(cli, &body->oa, opc == OST_WRITE ? requested_nob:0);
|
|
if (resend) {
|
|
if ((body->oa.o_valid & OBD_MD_FLFLAGS) == 0) {
|
|
body->oa.o_valid |= OBD_MD_FLFLAGS;
|
|
body->oa.o_flags = 0;
|
|
}
|
|
body->oa.o_flags |= OBD_FL_RECOV_RESEND;
|
|
}
|
|
|
|
if (osc_should_shrink_grant(cli))
|
|
osc_shrink_grant_local(cli, &body->oa);
|
|
|
|
/* size[REQ_REC_OFF] still sizeof (*body) */
|
|
if (opc == OST_WRITE) {
|
|
if (cli->cl_checksum &&
|
|
!sptlrpc_flavor_has_bulk(&req->rq_flvr)) {
|
|
/* store cl_cksum_type in a local variable since
|
|
* it can be changed via lprocfs
|
|
*/
|
|
enum cksum_type cksum_type = cli->cl_cksum_type;
|
|
|
|
if ((body->oa.o_valid & OBD_MD_FLFLAGS) == 0) {
|
|
oa->o_flags &= OBD_FL_LOCAL_MASK;
|
|
body->oa.o_flags = 0;
|
|
}
|
|
body->oa.o_flags |= cksum_type_pack(cksum_type);
|
|
body->oa.o_valid |= OBD_MD_FLCKSUM | OBD_MD_FLFLAGS;
|
|
body->oa.o_cksum = osc_checksum_bulk(requested_nob,
|
|
page_count, pga,
|
|
OST_WRITE,
|
|
cksum_type);
|
|
CDEBUG(D_PAGE, "checksum at write origin: %x\n",
|
|
body->oa.o_cksum);
|
|
/* save this in 'oa', too, for later checking */
|
|
oa->o_valid |= OBD_MD_FLCKSUM | OBD_MD_FLFLAGS;
|
|
oa->o_flags |= cksum_type_pack(cksum_type);
|
|
} else {
|
|
/* clear out the checksum flag, in case this is a
|
|
* resend but cl_checksum is no longer set. b=11238
|
|
*/
|
|
oa->o_valid &= ~OBD_MD_FLCKSUM;
|
|
}
|
|
oa->o_cksum = body->oa.o_cksum;
|
|
/* 1 RC per niobuf */
|
|
req_capsule_set_size(pill, &RMF_RCS, RCL_SERVER,
|
|
sizeof(__u32) * niocount);
|
|
} else {
|
|
if (cli->cl_checksum &&
|
|
!sptlrpc_flavor_has_bulk(&req->rq_flvr)) {
|
|
if ((body->oa.o_valid & OBD_MD_FLFLAGS) == 0)
|
|
body->oa.o_flags = 0;
|
|
body->oa.o_flags |= cksum_type_pack(cli->cl_cksum_type);
|
|
body->oa.o_valid |= OBD_MD_FLCKSUM | OBD_MD_FLFLAGS;
|
|
}
|
|
}
|
|
ptlrpc_request_set_replen(req);
|
|
|
|
CLASSERT(sizeof(*aa) <= sizeof(req->rq_async_args));
|
|
aa = ptlrpc_req_async_args(req);
|
|
aa->aa_oa = oa;
|
|
aa->aa_requested_nob = requested_nob;
|
|
aa->aa_nio_count = niocount;
|
|
aa->aa_page_count = page_count;
|
|
aa->aa_resends = 0;
|
|
aa->aa_ppga = pga;
|
|
aa->aa_cli = cli;
|
|
INIT_LIST_HEAD(&aa->aa_oaps);
|
|
|
|
*reqp = req;
|
|
return 0;
|
|
|
|
out:
|
|
ptlrpc_req_finished(req);
|
|
return rc;
|
|
}
|
|
|
|
static int check_write_checksum(struct obdo *oa, const lnet_process_id_t *peer,
|
|
__u32 client_cksum, __u32 server_cksum, int nob,
|
|
u32 page_count, struct brw_page **pga,
|
|
enum cksum_type client_cksum_type)
|
|
{
|
|
__u32 new_cksum;
|
|
char *msg;
|
|
enum cksum_type cksum_type;
|
|
|
|
if (server_cksum == client_cksum) {
|
|
CDEBUG(D_PAGE, "checksum %x confirmed\n", client_cksum);
|
|
return 0;
|
|
}
|
|
|
|
cksum_type = cksum_type_unpack(oa->o_valid & OBD_MD_FLFLAGS ?
|
|
oa->o_flags : 0);
|
|
new_cksum = osc_checksum_bulk(nob, page_count, pga, OST_WRITE,
|
|
cksum_type);
|
|
|
|
if (cksum_type != client_cksum_type)
|
|
msg = "the server did not use the checksum type specified in the original request - likely a protocol problem"
|
|
;
|
|
else if (new_cksum == server_cksum)
|
|
msg = "changed on the client after we checksummed it - likely false positive due to mmap IO (bug 11742)"
|
|
;
|
|
else if (new_cksum == client_cksum)
|
|
msg = "changed in transit before arrival at OST";
|
|
else
|
|
msg = "changed in transit AND doesn't match the original - likely false positive due to mmap IO (bug 11742)"
|
|
;
|
|
|
|
LCONSOLE_ERROR_MSG(0x132, "BAD WRITE CHECKSUM: %s: from %s inode "DFID
|
|
" object "DOSTID" extent [%llu-%llu]\n",
|
|
msg, libcfs_nid2str(peer->nid),
|
|
oa->o_valid & OBD_MD_FLFID ? oa->o_parent_seq : (__u64)0,
|
|
oa->o_valid & OBD_MD_FLFID ? oa->o_parent_oid : 0,
|
|
oa->o_valid & OBD_MD_FLFID ? oa->o_parent_ver : 0,
|
|
POSTID(&oa->o_oi), pga[0]->off,
|
|
pga[page_count-1]->off + pga[page_count-1]->count - 1);
|
|
CERROR("original client csum %x (type %x), server csum %x (type %x), client csum now %x\n",
|
|
client_cksum, client_cksum_type,
|
|
server_cksum, cksum_type, new_cksum);
|
|
return 1;
|
|
}
|
|
|
|
/* Note rc enters this function as number of bytes transferred */
|
|
static int osc_brw_fini_request(struct ptlrpc_request *req, int rc)
|
|
{
|
|
struct osc_brw_async_args *aa = (void *)&req->rq_async_args;
|
|
const lnet_process_id_t *peer =
|
|
&req->rq_import->imp_connection->c_peer;
|
|
struct client_obd *cli = aa->aa_cli;
|
|
struct ost_body *body;
|
|
__u32 client_cksum = 0;
|
|
|
|
if (rc < 0 && rc != -EDQUOT) {
|
|
DEBUG_REQ(D_INFO, req, "Failed request with rc = %d\n", rc);
|
|
return rc;
|
|
}
|
|
|
|
LASSERTF(req->rq_repmsg, "rc = %d\n", rc);
|
|
body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
|
|
if (!body) {
|
|
DEBUG_REQ(D_INFO, req, "Can't unpack body\n");
|
|
return -EPROTO;
|
|
}
|
|
|
|
/* set/clear over quota flag for a uid/gid */
|
|
if (lustre_msg_get_opc(req->rq_reqmsg) == OST_WRITE &&
|
|
body->oa.o_valid & (OBD_MD_FLUSRQUOTA | OBD_MD_FLGRPQUOTA)) {
|
|
unsigned int qid[MAXQUOTAS] = { body->oa.o_uid, body->oa.o_gid };
|
|
|
|
CDEBUG(D_QUOTA, "setdq for [%u %u] with valid %#llx, flags %x\n",
|
|
body->oa.o_uid, body->oa.o_gid, body->oa.o_valid,
|
|
body->oa.o_flags);
|
|
osc_quota_setdq(cli, qid, body->oa.o_valid, body->oa.o_flags);
|
|
}
|
|
|
|
osc_update_grant(cli, body);
|
|
|
|
if (rc < 0)
|
|
return rc;
|
|
|
|
if (aa->aa_oa->o_valid & OBD_MD_FLCKSUM)
|
|
client_cksum = aa->aa_oa->o_cksum; /* save for later */
|
|
|
|
if (lustre_msg_get_opc(req->rq_reqmsg) == OST_WRITE) {
|
|
if (rc > 0) {
|
|
CERROR("Unexpected +ve rc %d\n", rc);
|
|
return -EPROTO;
|
|
}
|
|
LASSERT(req->rq_bulk->bd_nob == aa->aa_requested_nob);
|
|
|
|
if (sptlrpc_cli_unwrap_bulk_write(req, req->rq_bulk))
|
|
return -EAGAIN;
|
|
|
|
if ((aa->aa_oa->o_valid & OBD_MD_FLCKSUM) && client_cksum &&
|
|
check_write_checksum(&body->oa, peer, client_cksum,
|
|
body->oa.o_cksum, aa->aa_requested_nob,
|
|
aa->aa_page_count, aa->aa_ppga,
|
|
cksum_type_unpack(aa->aa_oa->o_flags)))
|
|
return -EAGAIN;
|
|
|
|
rc = check_write_rcs(req, aa->aa_requested_nob,
|
|
aa->aa_nio_count,
|
|
aa->aa_page_count, aa->aa_ppga);
|
|
goto out;
|
|
}
|
|
|
|
/* The rest of this function executes only for OST_READs */
|
|
|
|
/* if unwrap_bulk failed, return -EAGAIN to retry */
|
|
rc = sptlrpc_cli_unwrap_bulk_read(req, req->rq_bulk, rc);
|
|
if (rc < 0) {
|
|
rc = -EAGAIN;
|
|
goto out;
|
|
}
|
|
|
|
if (rc > aa->aa_requested_nob) {
|
|
CERROR("Unexpected rc %d (%d requested)\n", rc,
|
|
aa->aa_requested_nob);
|
|
return -EPROTO;
|
|
}
|
|
|
|
if (rc != req->rq_bulk->bd_nob_transferred) {
|
|
CERROR("Unexpected rc %d (%d transferred)\n",
|
|
rc, req->rq_bulk->bd_nob_transferred);
|
|
return -EPROTO;
|
|
}
|
|
|
|
if (rc < aa->aa_requested_nob)
|
|
handle_short_read(rc, aa->aa_page_count, aa->aa_ppga);
|
|
|
|
if (body->oa.o_valid & OBD_MD_FLCKSUM) {
|
|
static int cksum_counter;
|
|
__u32 server_cksum = body->oa.o_cksum;
|
|
char *via = "";
|
|
char *router = "";
|
|
enum cksum_type cksum_type;
|
|
|
|
cksum_type = cksum_type_unpack(body->oa.o_valid&OBD_MD_FLFLAGS ?
|
|
body->oa.o_flags : 0);
|
|
client_cksum = osc_checksum_bulk(rc, aa->aa_page_count,
|
|
aa->aa_ppga, OST_READ,
|
|
cksum_type);
|
|
|
|
if (peer->nid != req->rq_bulk->bd_sender) {
|
|
via = " via ";
|
|
router = libcfs_nid2str(req->rq_bulk->bd_sender);
|
|
}
|
|
|
|
if (server_cksum != client_cksum) {
|
|
LCONSOLE_ERROR_MSG(0x133, "%s: BAD READ CHECKSUM: from %s%s%s inode " DFID " object " DOSTID " extent [%llu-%llu]\n",
|
|
req->rq_import->imp_obd->obd_name,
|
|
libcfs_nid2str(peer->nid),
|
|
via, router,
|
|
body->oa.o_valid & OBD_MD_FLFID ?
|
|
body->oa.o_parent_seq : (__u64)0,
|
|
body->oa.o_valid & OBD_MD_FLFID ?
|
|
body->oa.o_parent_oid : 0,
|
|
body->oa.o_valid & OBD_MD_FLFID ?
|
|
body->oa.o_parent_ver : 0,
|
|
POSTID(&body->oa.o_oi),
|
|
aa->aa_ppga[0]->off,
|
|
aa->aa_ppga[aa->aa_page_count-1]->off +
|
|
aa->aa_ppga[aa->aa_page_count-1]->count -
|
|
1);
|
|
CERROR("client %x, server %x, cksum_type %x\n",
|
|
client_cksum, server_cksum, cksum_type);
|
|
cksum_counter = 0;
|
|
aa->aa_oa->o_cksum = client_cksum;
|
|
rc = -EAGAIN;
|
|
} else {
|
|
cksum_counter++;
|
|
CDEBUG(D_PAGE, "checksum %x confirmed\n", client_cksum);
|
|
rc = 0;
|
|
}
|
|
} else if (unlikely(client_cksum)) {
|
|
static int cksum_missed;
|
|
|
|
cksum_missed++;
|
|
if ((cksum_missed & (-cksum_missed)) == cksum_missed)
|
|
CERROR("Checksum %u requested from %s but not sent\n",
|
|
cksum_missed, libcfs_nid2str(peer->nid));
|
|
} else {
|
|
rc = 0;
|
|
}
|
|
out:
|
|
if (rc >= 0)
|
|
lustre_get_wire_obdo(&req->rq_import->imp_connect_data,
|
|
aa->aa_oa, &body->oa);
|
|
|
|
return rc;
|
|
}
|
|
|
|
static int osc_brw_redo_request(struct ptlrpc_request *request,
|
|
struct osc_brw_async_args *aa, int rc)
|
|
{
|
|
struct ptlrpc_request *new_req;
|
|
struct osc_brw_async_args *new_aa;
|
|
struct osc_async_page *oap;
|
|
|
|
DEBUG_REQ(rc == -EINPROGRESS ? D_RPCTRACE : D_ERROR, request,
|
|
"redo for recoverable error %d", rc);
|
|
|
|
rc = osc_brw_prep_request(lustre_msg_get_opc(request->rq_reqmsg) ==
|
|
OST_WRITE ? OBD_BRW_WRITE : OBD_BRW_READ,
|
|
aa->aa_cli, aa->aa_oa,
|
|
NULL /* lsm unused by osc currently */,
|
|
aa->aa_page_count, aa->aa_ppga,
|
|
&new_req, 0, 1);
|
|
if (rc)
|
|
return rc;
|
|
|
|
list_for_each_entry(oap, &aa->aa_oaps, oap_rpc_item) {
|
|
if (oap->oap_request) {
|
|
LASSERTF(request == oap->oap_request,
|
|
"request %p != oap_request %p\n",
|
|
request, oap->oap_request);
|
|
if (oap->oap_interrupted) {
|
|
ptlrpc_req_finished(new_req);
|
|
return -EINTR;
|
|
}
|
|
}
|
|
}
|
|
/* New request takes over pga and oaps from old request.
|
|
* Note that copying a list_head doesn't work, need to move it...
|
|
*/
|
|
aa->aa_resends++;
|
|
new_req->rq_interpret_reply = request->rq_interpret_reply;
|
|
new_req->rq_async_args = request->rq_async_args;
|
|
/* cap resend delay to the current request timeout, this is similar to
|
|
* what ptlrpc does (see after_reply())
|
|
*/
|
|
if (aa->aa_resends > new_req->rq_timeout)
|
|
new_req->rq_sent = ktime_get_real_seconds() + new_req->rq_timeout;
|
|
else
|
|
new_req->rq_sent = ktime_get_real_seconds() + aa->aa_resends;
|
|
new_req->rq_generation_set = 1;
|
|
new_req->rq_import_generation = request->rq_import_generation;
|
|
|
|
new_aa = ptlrpc_req_async_args(new_req);
|
|
|
|
INIT_LIST_HEAD(&new_aa->aa_oaps);
|
|
list_splice_init(&aa->aa_oaps, &new_aa->aa_oaps);
|
|
INIT_LIST_HEAD(&new_aa->aa_exts);
|
|
list_splice_init(&aa->aa_exts, &new_aa->aa_exts);
|
|
new_aa->aa_resends = aa->aa_resends;
|
|
|
|
list_for_each_entry(oap, &new_aa->aa_oaps, oap_rpc_item) {
|
|
if (oap->oap_request) {
|
|
ptlrpc_req_finished(oap->oap_request);
|
|
oap->oap_request = ptlrpc_request_addref(new_req);
|
|
}
|
|
}
|
|
|
|
/* XXX: This code will run into problem if we're going to support
|
|
* to add a series of BRW RPCs into a self-defined ptlrpc_request_set
|
|
* and wait for all of them to be finished. We should inherit request
|
|
* set from old request.
|
|
*/
|
|
ptlrpcd_add_req(new_req);
|
|
|
|
DEBUG_REQ(D_INFO, new_req, "new request");
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* ugh, we want disk allocation on the target to happen in offset order. we'll
|
|
* follow sedgewicks advice and stick to the dead simple shellsort -- it'll do
|
|
* fine for our small page arrays and doesn't require allocation. its an
|
|
* insertion sort that swaps elements that are strides apart, shrinking the
|
|
* stride down until its '1' and the array is sorted.
|
|
*/
|
|
static void sort_brw_pages(struct brw_page **array, int num)
|
|
{
|
|
int stride, i, j;
|
|
struct brw_page *tmp;
|
|
|
|
if (num == 1)
|
|
return;
|
|
for (stride = 1; stride < num ; stride = (stride * 3) + 1)
|
|
;
|
|
|
|
do {
|
|
stride /= 3;
|
|
for (i = stride ; i < num ; i++) {
|
|
tmp = array[i];
|
|
j = i;
|
|
while (j >= stride && array[j - stride]->off > tmp->off) {
|
|
array[j] = array[j - stride];
|
|
j -= stride;
|
|
}
|
|
array[j] = tmp;
|
|
}
|
|
} while (stride > 1);
|
|
}
|
|
|
|
static void osc_release_ppga(struct brw_page **ppga, u32 count)
|
|
{
|
|
LASSERT(ppga);
|
|
kfree(ppga);
|
|
}
|
|
|
|
static int brw_interpret(const struct lu_env *env,
|
|
struct ptlrpc_request *req, void *data, int rc)
|
|
{
|
|
struct osc_brw_async_args *aa = data;
|
|
struct osc_extent *ext;
|
|
struct osc_extent *tmp;
|
|
struct cl_object *obj = NULL;
|
|
struct client_obd *cli = aa->aa_cli;
|
|
|
|
rc = osc_brw_fini_request(req, rc);
|
|
CDEBUG(D_INODE, "request %p aa %p rc %d\n", req, aa, rc);
|
|
/* When server return -EINPROGRESS, client should always retry
|
|
* regardless of the number of times the bulk was resent already.
|
|
*/
|
|
if (osc_recoverable_error(rc)) {
|
|
if (req->rq_import_generation !=
|
|
req->rq_import->imp_generation) {
|
|
CDEBUG(D_HA, "%s: resend cross eviction for object: " DOSTID ", rc = %d.\n",
|
|
req->rq_import->imp_obd->obd_name,
|
|
POSTID(&aa->aa_oa->o_oi), rc);
|
|
} else if (rc == -EINPROGRESS ||
|
|
client_should_resend(aa->aa_resends, aa->aa_cli)) {
|
|
rc = osc_brw_redo_request(req, aa, rc);
|
|
} else {
|
|
CERROR("%s: too many resent retries for object: %llu:%llu, rc = %d.\n",
|
|
req->rq_import->imp_obd->obd_name,
|
|
POSTID(&aa->aa_oa->o_oi), rc);
|
|
}
|
|
|
|
if (rc == 0)
|
|
return 0;
|
|
else if (rc == -EAGAIN || rc == -EINPROGRESS)
|
|
rc = -EIO;
|
|
}
|
|
|
|
list_for_each_entry_safe(ext, tmp, &aa->aa_exts, oe_link) {
|
|
if (!obj && rc == 0) {
|
|
obj = osc2cl(ext->oe_obj);
|
|
cl_object_get(obj);
|
|
}
|
|
|
|
list_del_init(&ext->oe_link);
|
|
osc_extent_finish(env, ext, 1, rc);
|
|
}
|
|
LASSERT(list_empty(&aa->aa_exts));
|
|
LASSERT(list_empty(&aa->aa_oaps));
|
|
|
|
if (obj) {
|
|
struct obdo *oa = aa->aa_oa;
|
|
struct cl_attr *attr = &osc_env_info(env)->oti_attr;
|
|
unsigned long valid = 0;
|
|
|
|
LASSERT(rc == 0);
|
|
if (oa->o_valid & OBD_MD_FLBLOCKS) {
|
|
attr->cat_blocks = oa->o_blocks;
|
|
valid |= CAT_BLOCKS;
|
|
}
|
|
if (oa->o_valid & OBD_MD_FLMTIME) {
|
|
attr->cat_mtime = oa->o_mtime;
|
|
valid |= CAT_MTIME;
|
|
}
|
|
if (oa->o_valid & OBD_MD_FLATIME) {
|
|
attr->cat_atime = oa->o_atime;
|
|
valid |= CAT_ATIME;
|
|
}
|
|
if (oa->o_valid & OBD_MD_FLCTIME) {
|
|
attr->cat_ctime = oa->o_ctime;
|
|
valid |= CAT_CTIME;
|
|
}
|
|
if (valid != 0) {
|
|
cl_object_attr_lock(obj);
|
|
cl_object_attr_set(env, obj, attr, valid);
|
|
cl_object_attr_unlock(obj);
|
|
}
|
|
cl_object_put(env, obj);
|
|
}
|
|
kmem_cache_free(obdo_cachep, aa->aa_oa);
|
|
|
|
cl_req_completion(env, aa->aa_clerq, rc < 0 ? rc :
|
|
req->rq_bulk->bd_nob_transferred);
|
|
osc_release_ppga(aa->aa_ppga, aa->aa_page_count);
|
|
ptlrpc_lprocfs_brw(req, req->rq_bulk->bd_nob_transferred);
|
|
|
|
client_obd_list_lock(&cli->cl_loi_list_lock);
|
|
/* We need to decrement before osc_ap_completion->osc_wake_cache_waiters
|
|
* is called so we know whether to go to sync BRWs or wait for more
|
|
* RPCs to complete
|
|
*/
|
|
if (lustre_msg_get_opc(req->rq_reqmsg) == OST_WRITE)
|
|
cli->cl_w_in_flight--;
|
|
else
|
|
cli->cl_r_in_flight--;
|
|
osc_wake_cache_waiters(cli);
|
|
client_obd_list_unlock(&cli->cl_loi_list_lock);
|
|
|
|
osc_io_unplug(env, cli, NULL);
|
|
return rc;
|
|
}
|
|
|
|
/**
|
|
* Build an RPC by the list of extent @ext_list. The caller must ensure
|
|
* that the total pages in this list are NOT over max pages per RPC.
|
|
* Extents in the list must be in OES_RPC state.
|
|
*/
|
|
int osc_build_rpc(const struct lu_env *env, struct client_obd *cli,
|
|
struct list_head *ext_list, int cmd)
|
|
{
|
|
struct ptlrpc_request *req = NULL;
|
|
struct osc_extent *ext;
|
|
struct brw_page **pga = NULL;
|
|
struct osc_brw_async_args *aa = NULL;
|
|
struct obdo *oa = NULL;
|
|
struct osc_async_page *oap;
|
|
struct osc_async_page *tmp;
|
|
struct cl_req *clerq = NULL;
|
|
enum cl_req_type crt = (cmd & OBD_BRW_WRITE) ? CRT_WRITE : CRT_READ;
|
|
struct ldlm_lock *lock = NULL;
|
|
struct cl_req_attr *crattr = NULL;
|
|
u64 starting_offset = OBD_OBJECT_EOF;
|
|
u64 ending_offset = 0;
|
|
int mpflag = 0;
|
|
int mem_tight = 0;
|
|
int page_count = 0;
|
|
int i;
|
|
int rc;
|
|
struct ost_body *body;
|
|
LIST_HEAD(rpc_list);
|
|
|
|
LASSERT(!list_empty(ext_list));
|
|
|
|
/* add pages into rpc_list to build BRW rpc */
|
|
list_for_each_entry(ext, ext_list, oe_link) {
|
|
LASSERT(ext->oe_state == OES_RPC);
|
|
mem_tight |= ext->oe_memalloc;
|
|
list_for_each_entry(oap, &ext->oe_pages, oap_pending_item) {
|
|
++page_count;
|
|
list_add_tail(&oap->oap_rpc_item, &rpc_list);
|
|
if (starting_offset > oap->oap_obj_off)
|
|
starting_offset = oap->oap_obj_off;
|
|
else
|
|
LASSERT(oap->oap_page_off == 0);
|
|
if (ending_offset < oap->oap_obj_off + oap->oap_count)
|
|
ending_offset = oap->oap_obj_off +
|
|
oap->oap_count;
|
|
else
|
|
LASSERT(oap->oap_page_off + oap->oap_count ==
|
|
PAGE_SIZE);
|
|
}
|
|
}
|
|
|
|
if (mem_tight)
|
|
mpflag = cfs_memory_pressure_get_and_set();
|
|
|
|
crattr = kzalloc(sizeof(*crattr), GFP_NOFS);
|
|
if (!crattr) {
|
|
rc = -ENOMEM;
|
|
goto out;
|
|
}
|
|
|
|
pga = kcalloc(page_count, sizeof(*pga), GFP_NOFS);
|
|
if (!pga) {
|
|
rc = -ENOMEM;
|
|
goto out;
|
|
}
|
|
|
|
oa = kmem_cache_zalloc(obdo_cachep, GFP_NOFS);
|
|
if (!oa) {
|
|
rc = -ENOMEM;
|
|
goto out;
|
|
}
|
|
|
|
i = 0;
|
|
list_for_each_entry(oap, &rpc_list, oap_rpc_item) {
|
|
struct cl_page *page = oap2cl_page(oap);
|
|
|
|
if (!clerq) {
|
|
clerq = cl_req_alloc(env, page, crt,
|
|
1 /* only 1-object rpcs for now */);
|
|
if (IS_ERR(clerq)) {
|
|
rc = PTR_ERR(clerq);
|
|
goto out;
|
|
}
|
|
lock = oap->oap_ldlm_lock;
|
|
}
|
|
if (mem_tight)
|
|
oap->oap_brw_flags |= OBD_BRW_MEMALLOC;
|
|
pga[i] = &oap->oap_brw_page;
|
|
pga[i]->off = oap->oap_obj_off + oap->oap_page_off;
|
|
CDEBUG(0, "put page %p index %lu oap %p flg %x to pga\n",
|
|
pga[i]->pg, page_index(oap->oap_page), oap,
|
|
pga[i]->flag);
|
|
i++;
|
|
cl_req_page_add(env, clerq, page);
|
|
}
|
|
|
|
/* always get the data for the obdo for the rpc */
|
|
LASSERT(clerq);
|
|
crattr->cra_oa = oa;
|
|
cl_req_attr_set(env, clerq, crattr, ~0ULL);
|
|
if (lock) {
|
|
oa->o_handle = lock->l_remote_handle;
|
|
oa->o_valid |= OBD_MD_FLHANDLE;
|
|
}
|
|
|
|
rc = cl_req_prep(env, clerq);
|
|
if (rc != 0) {
|
|
CERROR("cl_req_prep failed: %d\n", rc);
|
|
goto out;
|
|
}
|
|
|
|
sort_brw_pages(pga, page_count);
|
|
rc = osc_brw_prep_request(cmd, cli, oa, NULL, page_count,
|
|
pga, &req, 1, 0);
|
|
if (rc != 0) {
|
|
CERROR("prep_req failed: %d\n", rc);
|
|
goto out;
|
|
}
|
|
|
|
req->rq_interpret_reply = brw_interpret;
|
|
|
|
if (mem_tight != 0)
|
|
req->rq_memalloc = 1;
|
|
|
|
/* Need to update the timestamps after the request is built in case
|
|
* we race with setattr (locally or in queue at OST). If OST gets
|
|
* later setattr before earlier BRW (as determined by the request xid),
|
|
* the OST will not use BRW timestamps. Sadly, there is no obvious
|
|
* way to do this in a single call. bug 10150
|
|
*/
|
|
body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY);
|
|
crattr->cra_oa = &body->oa;
|
|
cl_req_attr_set(env, clerq, crattr,
|
|
OBD_MD_FLMTIME|OBD_MD_FLCTIME|OBD_MD_FLATIME);
|
|
|
|
lustre_msg_set_jobid(req->rq_reqmsg, crattr->cra_jobid);
|
|
|
|
CLASSERT(sizeof(*aa) <= sizeof(req->rq_async_args));
|
|
aa = ptlrpc_req_async_args(req);
|
|
INIT_LIST_HEAD(&aa->aa_oaps);
|
|
list_splice_init(&rpc_list, &aa->aa_oaps);
|
|
INIT_LIST_HEAD(&aa->aa_exts);
|
|
list_splice_init(ext_list, &aa->aa_exts);
|
|
aa->aa_clerq = clerq;
|
|
|
|
/* queued sync pages can be torn down while the pages
|
|
* were between the pending list and the rpc
|
|
*/
|
|
tmp = NULL;
|
|
list_for_each_entry(oap, &aa->aa_oaps, oap_rpc_item) {
|
|
/* only one oap gets a request reference */
|
|
if (!tmp)
|
|
tmp = oap;
|
|
if (oap->oap_interrupted && !req->rq_intr) {
|
|
CDEBUG(D_INODE, "oap %p in req %p interrupted\n",
|
|
oap, req);
|
|
ptlrpc_mark_interrupted(req);
|
|
}
|
|
}
|
|
if (tmp)
|
|
tmp->oap_request = ptlrpc_request_addref(req);
|
|
|
|
client_obd_list_lock(&cli->cl_loi_list_lock);
|
|
starting_offset >>= PAGE_SHIFT;
|
|
if (cmd == OBD_BRW_READ) {
|
|
cli->cl_r_in_flight++;
|
|
lprocfs_oh_tally_log2(&cli->cl_read_page_hist, page_count);
|
|
lprocfs_oh_tally(&cli->cl_read_rpc_hist, cli->cl_r_in_flight);
|
|
lprocfs_oh_tally_log2(&cli->cl_read_offset_hist,
|
|
starting_offset + 1);
|
|
} else {
|
|
cli->cl_w_in_flight++;
|
|
lprocfs_oh_tally_log2(&cli->cl_write_page_hist, page_count);
|
|
lprocfs_oh_tally(&cli->cl_write_rpc_hist, cli->cl_w_in_flight);
|
|
lprocfs_oh_tally_log2(&cli->cl_write_offset_hist,
|
|
starting_offset + 1);
|
|
}
|
|
client_obd_list_unlock(&cli->cl_loi_list_lock);
|
|
|
|
DEBUG_REQ(D_INODE, req, "%d pages, aa %p. now %dr/%dw in flight",
|
|
page_count, aa, cli->cl_r_in_flight,
|
|
cli->cl_w_in_flight);
|
|
|
|
ptlrpcd_add_req(req);
|
|
rc = 0;
|
|
|
|
out:
|
|
if (mem_tight != 0)
|
|
cfs_memory_pressure_restore(mpflag);
|
|
|
|
kfree(crattr);
|
|
|
|
if (rc != 0) {
|
|
LASSERT(!req);
|
|
|
|
if (oa)
|
|
kmem_cache_free(obdo_cachep, oa);
|
|
kfree(pga);
|
|
/* this should happen rarely and is pretty bad, it makes the
|
|
* pending list not follow the dirty order
|
|
*/
|
|
while (!list_empty(ext_list)) {
|
|
ext = list_entry(ext_list->next, struct osc_extent,
|
|
oe_link);
|
|
list_del_init(&ext->oe_link);
|
|
osc_extent_finish(env, ext, 0, rc);
|
|
}
|
|
if (clerq && !IS_ERR(clerq))
|
|
cl_req_completion(env, clerq, rc);
|
|
}
|
|
return rc;
|
|
}
|
|
|
|
static int osc_set_lock_data_with_check(struct ldlm_lock *lock,
|
|
struct ldlm_enqueue_info *einfo)
|
|
{
|
|
void *data = einfo->ei_cbdata;
|
|
int set = 0;
|
|
|
|
LASSERT(lock->l_blocking_ast == einfo->ei_cb_bl);
|
|
LASSERT(lock->l_resource->lr_type == einfo->ei_type);
|
|
LASSERT(lock->l_completion_ast == einfo->ei_cb_cp);
|
|
LASSERT(lock->l_glimpse_ast == einfo->ei_cb_gl);
|
|
|
|
lock_res_and_lock(lock);
|
|
spin_lock(&osc_ast_guard);
|
|
|
|
if (!lock->l_ast_data)
|
|
lock->l_ast_data = data;
|
|
if (lock->l_ast_data == data)
|
|
set = 1;
|
|
|
|
spin_unlock(&osc_ast_guard);
|
|
unlock_res_and_lock(lock);
|
|
|
|
return set;
|
|
}
|
|
|
|
static int osc_set_data_with_check(struct lustre_handle *lockh,
|
|
struct ldlm_enqueue_info *einfo)
|
|
{
|
|
struct ldlm_lock *lock = ldlm_handle2lock(lockh);
|
|
int set = 0;
|
|
|
|
if (lock) {
|
|
set = osc_set_lock_data_with_check(lock, einfo);
|
|
LDLM_LOCK_PUT(lock);
|
|
} else
|
|
CERROR("lockh %p, data %p - client evicted?\n",
|
|
lockh, einfo->ei_cbdata);
|
|
return set;
|
|
}
|
|
|
|
/* find any ldlm lock of the inode in osc
|
|
* return 0 not find
|
|
* 1 find one
|
|
* < 0 error
|
|
*/
|
|
static int osc_find_cbdata(struct obd_export *exp, struct lov_stripe_md *lsm,
|
|
ldlm_iterator_t replace, void *data)
|
|
{
|
|
struct ldlm_res_id res_id;
|
|
struct obd_device *obd = class_exp2obd(exp);
|
|
int rc = 0;
|
|
|
|
ostid_build_res_name(&lsm->lsm_oi, &res_id);
|
|
rc = ldlm_resource_iterate(obd->obd_namespace, &res_id, replace, data);
|
|
if (rc == LDLM_ITER_STOP)
|
|
return 1;
|
|
if (rc == LDLM_ITER_CONTINUE)
|
|
return 0;
|
|
return rc;
|
|
}
|
|
|
|
static int osc_enqueue_fini(struct ptlrpc_request *req, struct ost_lvb *lvb,
|
|
obd_enqueue_update_f upcall, void *cookie,
|
|
__u64 *flags, int agl, int rc)
|
|
{
|
|
int intent = *flags & LDLM_FL_HAS_INTENT;
|
|
|
|
if (intent) {
|
|
/* The request was created before ldlm_cli_enqueue call. */
|
|
if (rc == ELDLM_LOCK_ABORTED) {
|
|
struct ldlm_reply *rep;
|
|
|
|
rep = req_capsule_server_get(&req->rq_pill,
|
|
&RMF_DLM_REP);
|
|
|
|
rep->lock_policy_res1 =
|
|
ptlrpc_status_ntoh(rep->lock_policy_res1);
|
|
if (rep->lock_policy_res1)
|
|
rc = rep->lock_policy_res1;
|
|
}
|
|
}
|
|
|
|
if ((intent != 0 && rc == ELDLM_LOCK_ABORTED && agl == 0) ||
|
|
(rc == 0)) {
|
|
*flags |= LDLM_FL_LVB_READY;
|
|
CDEBUG(D_INODE, "got kms %llu blocks %llu mtime %llu\n",
|
|
lvb->lvb_size, lvb->lvb_blocks, lvb->lvb_mtime);
|
|
}
|
|
|
|
/* Call the update callback. */
|
|
rc = (*upcall)(cookie, rc);
|
|
return rc;
|
|
}
|
|
|
|
static int osc_enqueue_interpret(const struct lu_env *env,
|
|
struct ptlrpc_request *req,
|
|
struct osc_enqueue_args *aa, int rc)
|
|
{
|
|
struct ldlm_lock *lock;
|
|
struct lustre_handle handle;
|
|
__u32 mode;
|
|
struct ost_lvb *lvb;
|
|
__u32 lvb_len;
|
|
__u64 *flags = aa->oa_flags;
|
|
|
|
/* Make a local copy of a lock handle and a mode, because aa->oa_*
|
|
* might be freed anytime after lock upcall has been called.
|
|
*/
|
|
lustre_handle_copy(&handle, aa->oa_lockh);
|
|
mode = aa->oa_ei->ei_mode;
|
|
|
|
/* ldlm_cli_enqueue is holding a reference on the lock, so it must
|
|
* be valid.
|
|
*/
|
|
lock = ldlm_handle2lock(&handle);
|
|
|
|
/* Take an additional reference so that a blocking AST that
|
|
* ldlm_cli_enqueue_fini() might post for a failed lock, is guaranteed
|
|
* to arrive after an upcall has been executed by
|
|
* osc_enqueue_fini().
|
|
*/
|
|
ldlm_lock_addref(&handle, mode);
|
|
|
|
/* Let CP AST to grant the lock first. */
|
|
OBD_FAIL_TIMEOUT(OBD_FAIL_OSC_CP_ENQ_RACE, 1);
|
|
|
|
if (aa->oa_agl && rc == ELDLM_LOCK_ABORTED) {
|
|
lvb = NULL;
|
|
lvb_len = 0;
|
|
} else {
|
|
lvb = aa->oa_lvb;
|
|
lvb_len = sizeof(*aa->oa_lvb);
|
|
}
|
|
|
|
/* Complete obtaining the lock procedure. */
|
|
rc = ldlm_cli_enqueue_fini(aa->oa_exp, req, aa->oa_ei->ei_type, 1,
|
|
mode, flags, lvb, lvb_len, &handle, rc);
|
|
/* Complete osc stuff. */
|
|
rc = osc_enqueue_fini(req, aa->oa_lvb, aa->oa_upcall, aa->oa_cookie,
|
|
flags, aa->oa_agl, rc);
|
|
|
|
OBD_FAIL_TIMEOUT(OBD_FAIL_OSC_CP_CANCEL_RACE, 10);
|
|
|
|
/* Release the lock for async request. */
|
|
if (lustre_handle_is_used(&handle) && rc == ELDLM_OK)
|
|
/*
|
|
* Releases a reference taken by ldlm_cli_enqueue(), if it is
|
|
* not already released by
|
|
* ldlm_cli_enqueue_fini()->failed_lock_cleanup()
|
|
*/
|
|
ldlm_lock_decref(&handle, mode);
|
|
|
|
LASSERTF(lock, "lockh %p, req %p, aa %p - client evicted?\n",
|
|
aa->oa_lockh, req, aa);
|
|
ldlm_lock_decref(&handle, mode);
|
|
LDLM_LOCK_PUT(lock);
|
|
return rc;
|
|
}
|
|
|
|
struct ptlrpc_request_set *PTLRPCD_SET = (void *)1;
|
|
|
|
/* When enqueuing asynchronously, locks are not ordered, we can obtain a lock
|
|
* from the 2nd OSC before a lock from the 1st one. This does not deadlock with
|
|
* other synchronous requests, however keeping some locks and trying to obtain
|
|
* others may take a considerable amount of time in a case of ost failure; and
|
|
* when other sync requests do not get released lock from a client, the client
|
|
* is excluded from the cluster -- such scenarious make the life difficult, so
|
|
* release locks just after they are obtained.
|
|
*/
|
|
int osc_enqueue_base(struct obd_export *exp, struct ldlm_res_id *res_id,
|
|
__u64 *flags, ldlm_policy_data_t *policy,
|
|
struct ost_lvb *lvb, int kms_valid,
|
|
obd_enqueue_update_f upcall, void *cookie,
|
|
struct ldlm_enqueue_info *einfo,
|
|
struct lustre_handle *lockh,
|
|
struct ptlrpc_request_set *rqset, int async, int agl)
|
|
{
|
|
struct obd_device *obd = exp->exp_obd;
|
|
struct ptlrpc_request *req = NULL;
|
|
int intent = *flags & LDLM_FL_HAS_INTENT;
|
|
__u64 match_lvb = (agl != 0 ? 0 : LDLM_FL_LVB_READY);
|
|
enum ldlm_mode mode;
|
|
int rc;
|
|
|
|
/* Filesystem lock extents are extended to page boundaries so that
|
|
* dealing with the page cache is a little smoother.
|
|
*/
|
|
policy->l_extent.start -= policy->l_extent.start & ~CFS_PAGE_MASK;
|
|
policy->l_extent.end |= ~CFS_PAGE_MASK;
|
|
|
|
/*
|
|
* kms is not valid when either object is completely fresh (so that no
|
|
* locks are cached), or object was evicted. In the latter case cached
|
|
* lock cannot be used, because it would prime inode state with
|
|
* potentially stale LVB.
|
|
*/
|
|
if (!kms_valid)
|
|
goto no_match;
|
|
|
|
/* Next, search for already existing extent locks that will cover us */
|
|
/* If we're trying to read, we also search for an existing PW lock. The
|
|
* VFS and page cache already protect us locally, so lots of readers/
|
|
* writers can share a single PW lock.
|
|
*
|
|
* There are problems with conversion deadlocks, so instead of
|
|
* converting a read lock to a write lock, we'll just enqueue a new
|
|
* one.
|
|
*
|
|
* At some point we should cancel the read lock instead of making them
|
|
* send us a blocking callback, but there are problems with canceling
|
|
* locks out from other users right now, too.
|
|
*/
|
|
mode = einfo->ei_mode;
|
|
if (einfo->ei_mode == LCK_PR)
|
|
mode |= LCK_PW;
|
|
mode = ldlm_lock_match(obd->obd_namespace, *flags | match_lvb, res_id,
|
|
einfo->ei_type, policy, mode, lockh, 0);
|
|
if (mode) {
|
|
struct ldlm_lock *matched = ldlm_handle2lock(lockh);
|
|
|
|
if ((agl != 0) && !(matched->l_flags & LDLM_FL_LVB_READY)) {
|
|
/* For AGL, if enqueue RPC is sent but the lock is not
|
|
* granted, then skip to process this strpe.
|
|
* Return -ECANCELED to tell the caller.
|
|
*/
|
|
ldlm_lock_decref(lockh, mode);
|
|
LDLM_LOCK_PUT(matched);
|
|
return -ECANCELED;
|
|
}
|
|
|
|
if (osc_set_lock_data_with_check(matched, einfo)) {
|
|
*flags |= LDLM_FL_LVB_READY;
|
|
/* addref the lock only if not async requests and PW
|
|
* lock is matched whereas we asked for PR.
|
|
*/
|
|
if (!rqset && einfo->ei_mode != mode)
|
|
ldlm_lock_addref(lockh, LCK_PR);
|
|
if (intent) {
|
|
/* I would like to be able to ASSERT here that
|
|
* rss <= kms, but I can't, for reasons which
|
|
* are explained in lov_enqueue()
|
|
*/
|
|
}
|
|
|
|
/* We already have a lock, and it's referenced.
|
|
*
|
|
* At this point, the cl_lock::cll_state is CLS_QUEUING,
|
|
* AGL upcall may change it to CLS_HELD directly.
|
|
*/
|
|
(*upcall)(cookie, ELDLM_OK);
|
|
|
|
if (einfo->ei_mode != mode)
|
|
ldlm_lock_decref(lockh, LCK_PW);
|
|
else if (rqset)
|
|
/* For async requests, decref the lock. */
|
|
ldlm_lock_decref(lockh, einfo->ei_mode);
|
|
LDLM_LOCK_PUT(matched);
|
|
return ELDLM_OK;
|
|
}
|
|
|
|
ldlm_lock_decref(lockh, mode);
|
|
LDLM_LOCK_PUT(matched);
|
|
}
|
|
|
|
no_match:
|
|
if (intent) {
|
|
LIST_HEAD(cancels);
|
|
|
|
req = ptlrpc_request_alloc(class_exp2cliimp(exp),
|
|
&RQF_LDLM_ENQUEUE_LVB);
|
|
if (!req)
|
|
return -ENOMEM;
|
|
|
|
rc = ldlm_prep_enqueue_req(exp, req, &cancels, 0);
|
|
if (rc) {
|
|
ptlrpc_request_free(req);
|
|
return rc;
|
|
}
|
|
|
|
req_capsule_set_size(&req->rq_pill, &RMF_DLM_LVB, RCL_SERVER,
|
|
sizeof(*lvb));
|
|
ptlrpc_request_set_replen(req);
|
|
}
|
|
|
|
/* users of osc_enqueue() can pass this flag for ldlm_lock_match() */
|
|
*flags &= ~LDLM_FL_BLOCK_GRANTED;
|
|
|
|
rc = ldlm_cli_enqueue(exp, &req, einfo, res_id, policy, flags, lvb,
|
|
sizeof(*lvb), LVB_T_OST, lockh, async);
|
|
if (rqset) {
|
|
if (!rc) {
|
|
struct osc_enqueue_args *aa;
|
|
|
|
CLASSERT (sizeof(*aa) <= sizeof(req->rq_async_args));
|
|
aa = ptlrpc_req_async_args(req);
|
|
aa->oa_ei = einfo;
|
|
aa->oa_exp = exp;
|
|
aa->oa_flags = flags;
|
|
aa->oa_upcall = upcall;
|
|
aa->oa_cookie = cookie;
|
|
aa->oa_lvb = lvb;
|
|
aa->oa_lockh = lockh;
|
|
aa->oa_agl = !!agl;
|
|
|
|
req->rq_interpret_reply =
|
|
(ptlrpc_interpterer_t)osc_enqueue_interpret;
|
|
if (rqset == PTLRPCD_SET)
|
|
ptlrpcd_add_req(req);
|
|
else
|
|
ptlrpc_set_add_req(rqset, req);
|
|
} else if (intent) {
|
|
ptlrpc_req_finished(req);
|
|
}
|
|
return rc;
|
|
}
|
|
|
|
rc = osc_enqueue_fini(req, lvb, upcall, cookie, flags, agl, rc);
|
|
if (intent)
|
|
ptlrpc_req_finished(req);
|
|
|
|
return rc;
|
|
}
|
|
|
|
int osc_match_base(struct obd_export *exp, struct ldlm_res_id *res_id,
|
|
__u32 type, ldlm_policy_data_t *policy, __u32 mode,
|
|
__u64 *flags, void *data, struct lustre_handle *lockh,
|
|
int unref)
|
|
{
|
|
struct obd_device *obd = exp->exp_obd;
|
|
__u64 lflags = *flags;
|
|
enum ldlm_mode rc;
|
|
|
|
if (OBD_FAIL_CHECK(OBD_FAIL_OSC_MATCH))
|
|
return -EIO;
|
|
|
|
/* Filesystem lock extents are extended to page boundaries so that
|
|
* dealing with the page cache is a little smoother
|
|
*/
|
|
policy->l_extent.start -= policy->l_extent.start & ~CFS_PAGE_MASK;
|
|
policy->l_extent.end |= ~CFS_PAGE_MASK;
|
|
|
|
/* Next, search for already existing extent locks that will cover us */
|
|
/* If we're trying to read, we also search for an existing PW lock. The
|
|
* VFS and page cache already protect us locally, so lots of readers/
|
|
* writers can share a single PW lock.
|
|
*/
|
|
rc = mode;
|
|
if (mode == LCK_PR)
|
|
rc |= LCK_PW;
|
|
rc = ldlm_lock_match(obd->obd_namespace, lflags,
|
|
res_id, type, policy, rc, lockh, unref);
|
|
if (rc) {
|
|
if (data) {
|
|
if (!osc_set_data_with_check(lockh, data)) {
|
|
if (!(lflags & LDLM_FL_TEST_LOCK))
|
|
ldlm_lock_decref(lockh, rc);
|
|
return 0;
|
|
}
|
|
}
|
|
if (!(lflags & LDLM_FL_TEST_LOCK) && mode != rc) {
|
|
ldlm_lock_addref(lockh, LCK_PR);
|
|
ldlm_lock_decref(lockh, LCK_PW);
|
|
}
|
|
return rc;
|
|
}
|
|
return rc;
|
|
}
|
|
|
|
int osc_cancel_base(struct lustre_handle *lockh, __u32 mode)
|
|
{
|
|
if (unlikely(mode == LCK_GROUP))
|
|
ldlm_lock_decref_and_cancel(lockh, mode);
|
|
else
|
|
ldlm_lock_decref(lockh, mode);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int osc_statfs_interpret(const struct lu_env *env,
|
|
struct ptlrpc_request *req,
|
|
struct osc_async_args *aa, int rc)
|
|
{
|
|
struct obd_statfs *msfs;
|
|
|
|
if (rc == -EBADR)
|
|
/* The request has in fact never been sent
|
|
* due to issues at a higher level (LOV).
|
|
* Exit immediately since the caller is
|
|
* aware of the problem and takes care
|
|
* of the clean up
|
|
*/
|
|
return rc;
|
|
|
|
if ((rc == -ENOTCONN || rc == -EAGAIN) &&
|
|
(aa->aa_oi->oi_flags & OBD_STATFS_NODELAY)) {
|
|
rc = 0;
|
|
goto out;
|
|
}
|
|
|
|
if (rc != 0)
|
|
goto out;
|
|
|
|
msfs = req_capsule_server_get(&req->rq_pill, &RMF_OBD_STATFS);
|
|
if (!msfs) {
|
|
rc = -EPROTO;
|
|
goto out;
|
|
}
|
|
|
|
*aa->aa_oi->oi_osfs = *msfs;
|
|
out:
|
|
rc = aa->aa_oi->oi_cb_up(aa->aa_oi, rc);
|
|
return rc;
|
|
}
|
|
|
|
static int osc_statfs_async(struct obd_export *exp,
|
|
struct obd_info *oinfo, __u64 max_age,
|
|
struct ptlrpc_request_set *rqset)
|
|
{
|
|
struct obd_device *obd = class_exp2obd(exp);
|
|
struct ptlrpc_request *req;
|
|
struct osc_async_args *aa;
|
|
int rc;
|
|
|
|
/* We could possibly pass max_age in the request (as an absolute
|
|
* timestamp or a "seconds.usec ago") so the target can avoid doing
|
|
* extra calls into the filesystem if that isn't necessary (e.g.
|
|
* during mount that would help a bit). Having relative timestamps
|
|
* is not so great if request processing is slow, while absolute
|
|
* timestamps are not ideal because they need time synchronization.
|
|
*/
|
|
req = ptlrpc_request_alloc(obd->u.cli.cl_import, &RQF_OST_STATFS);
|
|
if (!req)
|
|
return -ENOMEM;
|
|
|
|
rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_STATFS);
|
|
if (rc) {
|
|
ptlrpc_request_free(req);
|
|
return rc;
|
|
}
|
|
ptlrpc_request_set_replen(req);
|
|
req->rq_request_portal = OST_CREATE_PORTAL;
|
|
ptlrpc_at_set_req_timeout(req);
|
|
|
|
if (oinfo->oi_flags & OBD_STATFS_NODELAY) {
|
|
/* procfs requests not want stat in wait for avoid deadlock */
|
|
req->rq_no_resend = 1;
|
|
req->rq_no_delay = 1;
|
|
}
|
|
|
|
req->rq_interpret_reply = (ptlrpc_interpterer_t)osc_statfs_interpret;
|
|
CLASSERT (sizeof(*aa) <= sizeof(req->rq_async_args));
|
|
aa = ptlrpc_req_async_args(req);
|
|
aa->aa_oi = oinfo;
|
|
|
|
ptlrpc_set_add_req(rqset, req);
|
|
return 0;
|
|
}
|
|
|
|
static int osc_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 obd_statfs *msfs;
|
|
struct ptlrpc_request *req;
|
|
struct obd_import *imp = NULL;
|
|
int rc;
|
|
|
|
/* Since the request might also come from lprocfs, so we need
|
|
* sync this with client_disconnect_export Bug15684
|
|
*/
|
|
down_read(&obd->u.cli.cl_sem);
|
|
if (obd->u.cli.cl_import)
|
|
imp = class_import_get(obd->u.cli.cl_import);
|
|
up_read(&obd->u.cli.cl_sem);
|
|
if (!imp)
|
|
return -ENODEV;
|
|
|
|
/* We could possibly pass max_age in the request (as an absolute
|
|
* timestamp or a "seconds.usec ago") so the target can avoid doing
|
|
* extra calls into the filesystem if that isn't necessary (e.g.
|
|
* during mount that would help a bit). Having relative timestamps
|
|
* is not so great if request processing is slow, while absolute
|
|
* timestamps are not ideal because they need time synchronization.
|
|
*/
|
|
req = ptlrpc_request_alloc(imp, &RQF_OST_STATFS);
|
|
|
|
class_import_put(imp);
|
|
|
|
if (!req)
|
|
return -ENOMEM;
|
|
|
|
rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_STATFS);
|
|
if (rc) {
|
|
ptlrpc_request_free(req);
|
|
return rc;
|
|
}
|
|
ptlrpc_request_set_replen(req);
|
|
req->rq_request_portal = OST_CREATE_PORTAL;
|
|
ptlrpc_at_set_req_timeout(req);
|
|
|
|
if (flags & OBD_STATFS_NODELAY) {
|
|
/* procfs requests not want stat in wait for avoid deadlock */
|
|
req->rq_no_resend = 1;
|
|
req->rq_no_delay = 1;
|
|
}
|
|
|
|
rc = ptlrpc_queue_wait(req);
|
|
if (rc)
|
|
goto out;
|
|
|
|
msfs = req_capsule_server_get(&req->rq_pill, &RMF_OBD_STATFS);
|
|
if (!msfs) {
|
|
rc = -EPROTO;
|
|
goto out;
|
|
}
|
|
|
|
*osfs = *msfs;
|
|
|
|
out:
|
|
ptlrpc_req_finished(req);
|
|
return rc;
|
|
}
|
|
|
|
/* Retrieve object striping information.
|
|
*
|
|
* @lmmu is a pointer to an in-core struct with lmm_ost_count indicating
|
|
* the maximum number of OST indices which will fit in the user buffer.
|
|
* lmm_magic must be LOV_MAGIC (we only use 1 slot here).
|
|
*/
|
|
static int osc_getstripe(struct lov_stripe_md *lsm,
|
|
struct lov_user_md __user *lump)
|
|
{
|
|
/* we use lov_user_md_v3 because it is larger than lov_user_md_v1 */
|
|
struct lov_user_md_v3 lum, *lumk;
|
|
struct lov_user_ost_data_v1 *lmm_objects;
|
|
int rc = 0, lum_size;
|
|
|
|
if (!lsm)
|
|
return -ENODATA;
|
|
|
|
/* we only need the header part from user space to get lmm_magic and
|
|
* lmm_stripe_count, (the header part is common to v1 and v3)
|
|
*/
|
|
lum_size = sizeof(struct lov_user_md_v1);
|
|
if (copy_from_user(&lum, lump, lum_size))
|
|
return -EFAULT;
|
|
|
|
if ((lum.lmm_magic != LOV_USER_MAGIC_V1) &&
|
|
(lum.lmm_magic != LOV_USER_MAGIC_V3))
|
|
return -EINVAL;
|
|
|
|
/* lov_user_md_vX and lov_mds_md_vX must have the same size */
|
|
LASSERT(sizeof(struct lov_user_md_v1) == sizeof(struct lov_mds_md_v1));
|
|
LASSERT(sizeof(struct lov_user_md_v3) == sizeof(struct lov_mds_md_v3));
|
|
LASSERT(sizeof(lum.lmm_objects[0]) == sizeof(lumk->lmm_objects[0]));
|
|
|
|
/* we can use lov_mds_md_size() to compute lum_size
|
|
* because lov_user_md_vX and lov_mds_md_vX have the same size
|
|
*/
|
|
if (lum.lmm_stripe_count > 0) {
|
|
lum_size = lov_mds_md_size(lum.lmm_stripe_count, lum.lmm_magic);
|
|
lumk = kzalloc(lum_size, GFP_NOFS);
|
|
if (!lumk)
|
|
return -ENOMEM;
|
|
|
|
if (lum.lmm_magic == LOV_USER_MAGIC_V1)
|
|
lmm_objects =
|
|
&(((struct lov_user_md_v1 *)lumk)->lmm_objects[0]);
|
|
else
|
|
lmm_objects = &(lumk->lmm_objects[0]);
|
|
lmm_objects->l_ost_oi = lsm->lsm_oi;
|
|
} else {
|
|
lum_size = lov_mds_md_size(0, lum.lmm_magic);
|
|
lumk = &lum;
|
|
}
|
|
|
|
lumk->lmm_oi = lsm->lsm_oi;
|
|
lumk->lmm_stripe_count = 1;
|
|
|
|
if (copy_to_user(lump, lumk, lum_size))
|
|
rc = -EFAULT;
|
|
|
|
if (lumk != &lum)
|
|
kfree(lumk);
|
|
|
|
return rc;
|
|
}
|
|
|
|
static int osc_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
|
|
void *karg, void __user *uarg)
|
|
{
|
|
struct obd_device *obd = exp->exp_obd;
|
|
struct obd_ioctl_data *data = karg;
|
|
int err = 0;
|
|
|
|
if (!try_module_get(THIS_MODULE)) {
|
|
CERROR("%s: cannot get module '%s'\n", obd->obd_name,
|
|
module_name(THIS_MODULE));
|
|
return -EINVAL;
|
|
}
|
|
switch (cmd) {
|
|
case OBD_IOC_LOV_GET_CONFIG: {
|
|
char *buf;
|
|
struct lov_desc *desc;
|
|
struct obd_uuid uuid;
|
|
|
|
buf = NULL;
|
|
len = 0;
|
|
if (obd_ioctl_getdata(&buf, &len, uarg)) {
|
|
err = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
data = (struct obd_ioctl_data *)buf;
|
|
|
|
if (sizeof(*desc) > data->ioc_inllen1) {
|
|
obd_ioctl_freedata(buf, len);
|
|
err = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
if (data->ioc_inllen2 < sizeof(uuid)) {
|
|
obd_ioctl_freedata(buf, len);
|
|
err = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
desc = (struct lov_desc *)data->ioc_inlbuf1;
|
|
desc->ld_tgt_count = 1;
|
|
desc->ld_active_tgt_count = 1;
|
|
desc->ld_default_stripe_count = 1;
|
|
desc->ld_default_stripe_size = 0;
|
|
desc->ld_default_stripe_offset = 0;
|
|
desc->ld_pattern = 0;
|
|
memcpy(&desc->ld_uuid, &obd->obd_uuid, sizeof(uuid));
|
|
|
|
memcpy(data->ioc_inlbuf2, &obd->obd_uuid, sizeof(uuid));
|
|
|
|
err = copy_to_user(uarg, buf, len);
|
|
if (err)
|
|
err = -EFAULT;
|
|
obd_ioctl_freedata(buf, len);
|
|
goto out;
|
|
}
|
|
case LL_IOC_LOV_SETSTRIPE:
|
|
err = obd_alloc_memmd(exp, karg);
|
|
if (err > 0)
|
|
err = 0;
|
|
goto out;
|
|
case LL_IOC_LOV_GETSTRIPE:
|
|
err = osc_getstripe(karg, uarg);
|
|
goto out;
|
|
case OBD_IOC_CLIENT_RECOVER:
|
|
err = ptlrpc_recover_import(obd->u.cli.cl_import,
|
|
data->ioc_inlbuf1, 0);
|
|
if (err > 0)
|
|
err = 0;
|
|
goto out;
|
|
case IOC_OSC_SET_ACTIVE:
|
|
err = ptlrpc_set_import_active(obd->u.cli.cl_import,
|
|
data->ioc_offset);
|
|
goto out;
|
|
case OBD_IOC_POLL_QUOTACHECK:
|
|
err = osc_quota_poll_check(exp, karg);
|
|
goto out;
|
|
case OBD_IOC_PING_TARGET:
|
|
err = ptlrpc_obd_ping(obd);
|
|
goto out;
|
|
default:
|
|
CDEBUG(D_INODE, "unrecognised ioctl %#x by %s\n",
|
|
cmd, current_comm());
|
|
err = -ENOTTY;
|
|
goto out;
|
|
}
|
|
out:
|
|
module_put(THIS_MODULE);
|
|
return err;
|
|
}
|
|
|
|
static int osc_get_info(const struct lu_env *env, struct obd_export *exp,
|
|
u32 keylen, void *key, __u32 *vallen, void *val,
|
|
struct lov_stripe_md *lsm)
|
|
{
|
|
if (!vallen || !val)
|
|
return -EFAULT;
|
|
|
|
if (KEY_IS(KEY_LOCK_TO_STRIPE)) {
|
|
__u32 *stripe = val;
|
|
*vallen = sizeof(*stripe);
|
|
*stripe = 0;
|
|
return 0;
|
|
} else if (KEY_IS(KEY_LAST_ID)) {
|
|
struct ptlrpc_request *req;
|
|
u64 *reply;
|
|
char *tmp;
|
|
int rc;
|
|
|
|
req = ptlrpc_request_alloc(class_exp2cliimp(exp),
|
|
&RQF_OST_GET_INFO_LAST_ID);
|
|
if (!req)
|
|
return -ENOMEM;
|
|
|
|
req_capsule_set_size(&req->rq_pill, &RMF_SETINFO_KEY,
|
|
RCL_CLIENT, keylen);
|
|
rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_GET_INFO);
|
|
if (rc) {
|
|
ptlrpc_request_free(req);
|
|
return rc;
|
|
}
|
|
|
|
tmp = req_capsule_client_get(&req->rq_pill, &RMF_SETINFO_KEY);
|
|
memcpy(tmp, key, keylen);
|
|
|
|
req->rq_no_delay = req->rq_no_resend = 1;
|
|
ptlrpc_request_set_replen(req);
|
|
rc = ptlrpc_queue_wait(req);
|
|
if (rc)
|
|
goto out;
|
|
|
|
reply = req_capsule_server_get(&req->rq_pill, &RMF_OBD_ID);
|
|
if (!reply) {
|
|
rc = -EPROTO;
|
|
goto out;
|
|
}
|
|
|
|
*((u64 *)val) = *reply;
|
|
out:
|
|
ptlrpc_req_finished(req);
|
|
return rc;
|
|
} else if (KEY_IS(KEY_FIEMAP)) {
|
|
struct ll_fiemap_info_key *fm_key = key;
|
|
struct ldlm_res_id res_id;
|
|
ldlm_policy_data_t policy;
|
|
struct lustre_handle lockh;
|
|
enum ldlm_mode mode = 0;
|
|
struct ptlrpc_request *req;
|
|
struct ll_user_fiemap *reply;
|
|
char *tmp;
|
|
int rc;
|
|
|
|
if (!(fm_key->fiemap.fm_flags & FIEMAP_FLAG_SYNC))
|
|
goto skip_locking;
|
|
|
|
policy.l_extent.start = fm_key->fiemap.fm_start &
|
|
CFS_PAGE_MASK;
|
|
|
|
if (OBD_OBJECT_EOF - fm_key->fiemap.fm_length <=
|
|
fm_key->fiemap.fm_start + PAGE_SIZE - 1)
|
|
policy.l_extent.end = OBD_OBJECT_EOF;
|
|
else
|
|
policy.l_extent.end = (fm_key->fiemap.fm_start +
|
|
fm_key->fiemap.fm_length +
|
|
PAGE_SIZE - 1) & CFS_PAGE_MASK;
|
|
|
|
ostid_build_res_name(&fm_key->oa.o_oi, &res_id);
|
|
mode = ldlm_lock_match(exp->exp_obd->obd_namespace,
|
|
LDLM_FL_BLOCK_GRANTED |
|
|
LDLM_FL_LVB_READY,
|
|
&res_id, LDLM_EXTENT, &policy,
|
|
LCK_PR | LCK_PW, &lockh, 0);
|
|
if (mode) { /* lock is cached on client */
|
|
if (mode != LCK_PR) {
|
|
ldlm_lock_addref(&lockh, LCK_PR);
|
|
ldlm_lock_decref(&lockh, LCK_PW);
|
|
}
|
|
} else { /* no cached lock, needs acquire lock on server side */
|
|
fm_key->oa.o_valid |= OBD_MD_FLFLAGS;
|
|
fm_key->oa.o_flags |= OBD_FL_SRVLOCK;
|
|
}
|
|
|
|
skip_locking:
|
|
req = ptlrpc_request_alloc(class_exp2cliimp(exp),
|
|
&RQF_OST_GET_INFO_FIEMAP);
|
|
if (!req) {
|
|
rc = -ENOMEM;
|
|
goto drop_lock;
|
|
}
|
|
|
|
req_capsule_set_size(&req->rq_pill, &RMF_FIEMAP_KEY,
|
|
RCL_CLIENT, keylen);
|
|
req_capsule_set_size(&req->rq_pill, &RMF_FIEMAP_VAL,
|
|
RCL_CLIENT, *vallen);
|
|
req_capsule_set_size(&req->rq_pill, &RMF_FIEMAP_VAL,
|
|
RCL_SERVER, *vallen);
|
|
|
|
rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_GET_INFO);
|
|
if (rc) {
|
|
ptlrpc_request_free(req);
|
|
goto drop_lock;
|
|
}
|
|
|
|
tmp = req_capsule_client_get(&req->rq_pill, &RMF_FIEMAP_KEY);
|
|
memcpy(tmp, key, keylen);
|
|
tmp = req_capsule_client_get(&req->rq_pill, &RMF_FIEMAP_VAL);
|
|
memcpy(tmp, val, *vallen);
|
|
|
|
ptlrpc_request_set_replen(req);
|
|
rc = ptlrpc_queue_wait(req);
|
|
if (rc)
|
|
goto fini_req;
|
|
|
|
reply = req_capsule_server_get(&req->rq_pill, &RMF_FIEMAP_VAL);
|
|
if (!reply) {
|
|
rc = -EPROTO;
|
|
goto fini_req;
|
|
}
|
|
|
|
memcpy(val, reply, *vallen);
|
|
fini_req:
|
|
ptlrpc_req_finished(req);
|
|
drop_lock:
|
|
if (mode)
|
|
ldlm_lock_decref(&lockh, LCK_PR);
|
|
return rc;
|
|
}
|
|
|
|
return -EINVAL;
|
|
}
|
|
|
|
static int osc_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 ptlrpc_request *req;
|
|
struct obd_device *obd = exp->exp_obd;
|
|
struct obd_import *imp = class_exp2cliimp(exp);
|
|
char *tmp;
|
|
int rc;
|
|
|
|
OBD_FAIL_TIMEOUT(OBD_FAIL_OSC_SHUTDOWN, 10);
|
|
|
|
if (KEY_IS(KEY_CHECKSUM)) {
|
|
if (vallen != sizeof(int))
|
|
return -EINVAL;
|
|
exp->exp_obd->u.cli.cl_checksum = (*(int *)val) ? 1 : 0;
|
|
return 0;
|
|
}
|
|
|
|
if (KEY_IS(KEY_SPTLRPC_CONF)) {
|
|
sptlrpc_conf_client_adapt(obd);
|
|
return 0;
|
|
}
|
|
|
|
if (KEY_IS(KEY_FLUSH_CTX)) {
|
|
sptlrpc_import_flush_my_ctx(imp);
|
|
return 0;
|
|
}
|
|
|
|
if (KEY_IS(KEY_CACHE_SET)) {
|
|
struct client_obd *cli = &obd->u.cli;
|
|
|
|
LASSERT(!cli->cl_cache); /* only once */
|
|
cli->cl_cache = val;
|
|
atomic_inc(&cli->cl_cache->ccc_users);
|
|
cli->cl_lru_left = &cli->cl_cache->ccc_lru_left;
|
|
|
|
/* add this osc into entity list */
|
|
LASSERT(list_empty(&cli->cl_lru_osc));
|
|
spin_lock(&cli->cl_cache->ccc_lru_lock);
|
|
list_add(&cli->cl_lru_osc, &cli->cl_cache->ccc_lru);
|
|
spin_unlock(&cli->cl_cache->ccc_lru_lock);
|
|
|
|
return 0;
|
|
}
|
|
|
|
if (KEY_IS(KEY_CACHE_LRU_SHRINK)) {
|
|
struct client_obd *cli = &obd->u.cli;
|
|
int nr = atomic_read(&cli->cl_lru_in_list) >> 1;
|
|
int target = *(int *)val;
|
|
|
|
nr = osc_lru_shrink(cli, min(nr, target));
|
|
*(int *)val -= nr;
|
|
return 0;
|
|
}
|
|
|
|
if (!set && !KEY_IS(KEY_GRANT_SHRINK))
|
|
return -EINVAL;
|
|
|
|
/* We pass all other commands directly to OST. Since nobody calls osc
|
|
* methods directly and everybody is supposed to go through LOV, we
|
|
* assume lov checked invalid values for us.
|
|
* The only recognised values so far are evict_by_nid and mds_conn.
|
|
* Even if something bad goes through, we'd get a -EINVAL from OST
|
|
* anyway.
|
|
*/
|
|
|
|
req = ptlrpc_request_alloc(imp, KEY_IS(KEY_GRANT_SHRINK) ?
|
|
&RQF_OST_SET_GRANT_INFO :
|
|
&RQF_OBD_SET_INFO);
|
|
if (!req)
|
|
return -ENOMEM;
|
|
|
|
req_capsule_set_size(&req->rq_pill, &RMF_SETINFO_KEY,
|
|
RCL_CLIENT, keylen);
|
|
if (!KEY_IS(KEY_GRANT_SHRINK))
|
|
req_capsule_set_size(&req->rq_pill, &RMF_SETINFO_VAL,
|
|
RCL_CLIENT, vallen);
|
|
rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_SET_INFO);
|
|
if (rc) {
|
|
ptlrpc_request_free(req);
|
|
return rc;
|
|
}
|
|
|
|
tmp = req_capsule_client_get(&req->rq_pill, &RMF_SETINFO_KEY);
|
|
memcpy(tmp, key, keylen);
|
|
tmp = req_capsule_client_get(&req->rq_pill, KEY_IS(KEY_GRANT_SHRINK) ?
|
|
&RMF_OST_BODY :
|
|
&RMF_SETINFO_VAL);
|
|
memcpy(tmp, val, vallen);
|
|
|
|
if (KEY_IS(KEY_GRANT_SHRINK)) {
|
|
struct osc_brw_async_args *aa;
|
|
struct obdo *oa;
|
|
|
|
CLASSERT(sizeof(*aa) <= sizeof(req->rq_async_args));
|
|
aa = ptlrpc_req_async_args(req);
|
|
oa = kmem_cache_zalloc(obdo_cachep, GFP_NOFS);
|
|
if (!oa) {
|
|
ptlrpc_req_finished(req);
|
|
return -ENOMEM;
|
|
}
|
|
*oa = ((struct ost_body *)val)->oa;
|
|
aa->aa_oa = oa;
|
|
req->rq_interpret_reply = osc_shrink_grant_interpret;
|
|
}
|
|
|
|
ptlrpc_request_set_replen(req);
|
|
if (!KEY_IS(KEY_GRANT_SHRINK)) {
|
|
LASSERT(set);
|
|
ptlrpc_set_add_req(set, req);
|
|
ptlrpc_check_set(NULL, set);
|
|
} else {
|
|
ptlrpcd_add_req(req);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int osc_reconnect(const struct lu_env *env,
|
|
struct obd_export *exp, struct obd_device *obd,
|
|
struct obd_uuid *cluuid,
|
|
struct obd_connect_data *data,
|
|
void *localdata)
|
|
{
|
|
struct client_obd *cli = &obd->u.cli;
|
|
|
|
if (data && (data->ocd_connect_flags & OBD_CONNECT_GRANT)) {
|
|
long lost_grant;
|
|
|
|
client_obd_list_lock(&cli->cl_loi_list_lock);
|
|
data->ocd_grant = (cli->cl_avail_grant + cli->cl_dirty) ?:
|
|
2 * cli_brw_size(obd);
|
|
lost_grant = cli->cl_lost_grant;
|
|
cli->cl_lost_grant = 0;
|
|
client_obd_list_unlock(&cli->cl_loi_list_lock);
|
|
|
|
CDEBUG(D_RPCTRACE, "ocd_connect_flags: %#llx ocd_version: %d ocd_grant: %d, lost: %ld.\n",
|
|
data->ocd_connect_flags,
|
|
data->ocd_version, data->ocd_grant, lost_grant);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int osc_disconnect(struct obd_export *exp)
|
|
{
|
|
struct obd_device *obd = class_exp2obd(exp);
|
|
int rc;
|
|
|
|
rc = client_disconnect_export(exp);
|
|
/**
|
|
* Initially we put del_shrink_grant before disconnect_export, but it
|
|
* causes the following problem if setup (connect) and cleanup
|
|
* (disconnect) are tangled together.
|
|
* connect p1 disconnect p2
|
|
* ptlrpc_connect_import
|
|
* ............... class_manual_cleanup
|
|
* osc_disconnect
|
|
* del_shrink_grant
|
|
* ptlrpc_connect_interrupt
|
|
* init_grant_shrink
|
|
* add this client to shrink list
|
|
* cleanup_osc
|
|
* Bang! pinger trigger the shrink.
|
|
* So the osc should be disconnected from the shrink list, after we
|
|
* are sure the import has been destroyed. BUG18662
|
|
*/
|
|
if (!obd->u.cli.cl_import)
|
|
osc_del_shrink_grant(&obd->u.cli);
|
|
return rc;
|
|
}
|
|
|
|
static int osc_import_event(struct obd_device *obd,
|
|
struct obd_import *imp,
|
|
enum obd_import_event event)
|
|
{
|
|
struct client_obd *cli;
|
|
int rc = 0;
|
|
|
|
LASSERT(imp->imp_obd == obd);
|
|
|
|
switch (event) {
|
|
case IMP_EVENT_DISCON: {
|
|
cli = &obd->u.cli;
|
|
client_obd_list_lock(&cli->cl_loi_list_lock);
|
|
cli->cl_avail_grant = 0;
|
|
cli->cl_lost_grant = 0;
|
|
client_obd_list_unlock(&cli->cl_loi_list_lock);
|
|
break;
|
|
}
|
|
case IMP_EVENT_INACTIVE: {
|
|
rc = obd_notify_observer(obd, obd, OBD_NOTIFY_INACTIVE, NULL);
|
|
break;
|
|
}
|
|
case IMP_EVENT_INVALIDATE: {
|
|
struct ldlm_namespace *ns = obd->obd_namespace;
|
|
struct lu_env *env;
|
|
int refcheck;
|
|
|
|
env = cl_env_get(&refcheck);
|
|
if (!IS_ERR(env)) {
|
|
/* Reset grants */
|
|
cli = &obd->u.cli;
|
|
/* all pages go to failing rpcs due to the invalid
|
|
* import
|
|
*/
|
|
osc_io_unplug(env, cli, NULL);
|
|
|
|
ldlm_namespace_cleanup(ns, LDLM_FL_LOCAL_ONLY);
|
|
cl_env_put(env, &refcheck);
|
|
} else
|
|
rc = PTR_ERR(env);
|
|
break;
|
|
}
|
|
case IMP_EVENT_ACTIVE: {
|
|
rc = obd_notify_observer(obd, obd, OBD_NOTIFY_ACTIVE, NULL);
|
|
break;
|
|
}
|
|
case IMP_EVENT_OCD: {
|
|
struct obd_connect_data *ocd = &imp->imp_connect_data;
|
|
|
|
if (ocd->ocd_connect_flags & OBD_CONNECT_GRANT)
|
|
osc_init_grant(&obd->u.cli, ocd);
|
|
|
|
/* See bug 7198 */
|
|
if (ocd->ocd_connect_flags & OBD_CONNECT_REQPORTAL)
|
|
imp->imp_client->cli_request_portal = OST_REQUEST_PORTAL;
|
|
|
|
rc = obd_notify_observer(obd, obd, OBD_NOTIFY_OCD, NULL);
|
|
break;
|
|
}
|
|
case IMP_EVENT_DEACTIVATE: {
|
|
rc = obd_notify_observer(obd, obd, OBD_NOTIFY_DEACTIVATE, NULL);
|
|
break;
|
|
}
|
|
case IMP_EVENT_ACTIVATE: {
|
|
rc = obd_notify_observer(obd, obd, OBD_NOTIFY_ACTIVATE, NULL);
|
|
break;
|
|
}
|
|
default:
|
|
CERROR("Unknown import event %d\n", event);
|
|
LBUG();
|
|
}
|
|
return rc;
|
|
}
|
|
|
|
/**
|
|
* Determine whether the lock can be canceled before replaying the lock
|
|
* during recovery, see bug16774 for detailed information.
|
|
*
|
|
* \retval zero the lock can't be canceled
|
|
* \retval other ok to cancel
|
|
*/
|
|
static int osc_cancel_for_recovery(struct ldlm_lock *lock)
|
|
{
|
|
check_res_locked(lock->l_resource);
|
|
|
|
/*
|
|
* Cancel all unused extent lock in granted mode LCK_PR or LCK_CR.
|
|
*
|
|
* XXX as a future improvement, we can also cancel unused write lock
|
|
* if it doesn't have dirty data and active mmaps.
|
|
*/
|
|
if (lock->l_resource->lr_type == LDLM_EXTENT &&
|
|
(lock->l_granted_mode == LCK_PR ||
|
|
lock->l_granted_mode == LCK_CR) &&
|
|
(osc_dlm_lock_pageref(lock) == 0))
|
|
return 1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int brw_queue_work(const struct lu_env *env, void *data)
|
|
{
|
|
struct client_obd *cli = data;
|
|
|
|
CDEBUG(D_CACHE, "Run writeback work for client obd %p.\n", cli);
|
|
|
|
osc_io_unplug(env, cli, NULL);
|
|
return 0;
|
|
}
|
|
|
|
int osc_setup(struct obd_device *obd, struct lustre_cfg *lcfg)
|
|
{
|
|
struct lprocfs_static_vars lvars = { NULL };
|
|
struct client_obd *cli = &obd->u.cli;
|
|
void *handler;
|
|
int rc;
|
|
int adding;
|
|
int added;
|
|
int req_count;
|
|
|
|
rc = ptlrpcd_addref();
|
|
if (rc)
|
|
return rc;
|
|
|
|
rc = client_obd_setup(obd, lcfg);
|
|
if (rc)
|
|
goto out_ptlrpcd;
|
|
|
|
handler = ptlrpcd_alloc_work(cli->cl_import, brw_queue_work, cli);
|
|
if (IS_ERR(handler)) {
|
|
rc = PTR_ERR(handler);
|
|
goto out_client_setup;
|
|
}
|
|
cli->cl_writeback_work = handler;
|
|
|
|
rc = osc_quota_setup(obd);
|
|
if (rc)
|
|
goto out_ptlrpcd_work;
|
|
|
|
cli->cl_grant_shrink_interval = GRANT_SHRINK_INTERVAL;
|
|
lprocfs_osc_init_vars(&lvars);
|
|
if (lprocfs_obd_setup(obd, lvars.obd_vars, lvars.sysfs_vars) == 0) {
|
|
lproc_osc_attach_seqstat(obd);
|
|
sptlrpc_lprocfs_cliobd_attach(obd);
|
|
ptlrpc_lprocfs_register_obd(obd);
|
|
}
|
|
|
|
/*
|
|
* We try to control the total number of requests with a upper limit
|
|
* osc_reqpool_maxreqcount. There might be some race which will cause
|
|
* over-limit allocation, but it is fine.
|
|
*/
|
|
req_count = atomic_read(&osc_pool_req_count);
|
|
if (req_count < osc_reqpool_maxreqcount) {
|
|
adding = cli->cl_max_rpcs_in_flight + 2;
|
|
if (req_count + adding > osc_reqpool_maxreqcount)
|
|
adding = osc_reqpool_maxreqcount - req_count;
|
|
|
|
added = ptlrpc_add_rqs_to_pool(osc_rq_pool, adding);
|
|
atomic_add(added, &osc_pool_req_count);
|
|
}
|
|
|
|
INIT_LIST_HEAD(&cli->cl_grant_shrink_list);
|
|
ns_register_cancel(obd->obd_namespace, osc_cancel_for_recovery);
|
|
return rc;
|
|
|
|
out_ptlrpcd_work:
|
|
ptlrpcd_destroy_work(handler);
|
|
out_client_setup:
|
|
client_obd_cleanup(obd);
|
|
out_ptlrpcd:
|
|
ptlrpcd_decref();
|
|
return rc;
|
|
}
|
|
|
|
static int osc_precleanup(struct obd_device *obd, enum obd_cleanup_stage stage)
|
|
{
|
|
switch (stage) {
|
|
case OBD_CLEANUP_EARLY: {
|
|
struct obd_import *imp;
|
|
|
|
imp = obd->u.cli.cl_import;
|
|
CDEBUG(D_HA, "Deactivating import %s\n", obd->obd_name);
|
|
/* ptlrpc_abort_inflight to stop an mds_lov_synchronize */
|
|
ptlrpc_deactivate_import(imp);
|
|
spin_lock(&imp->imp_lock);
|
|
imp->imp_pingable = 0;
|
|
spin_unlock(&imp->imp_lock);
|
|
break;
|
|
}
|
|
case OBD_CLEANUP_EXPORTS: {
|
|
struct client_obd *cli = &obd->u.cli;
|
|
/* LU-464
|
|
* for echo client, export may be on zombie list, wait for
|
|
* zombie thread to cull it, because cli.cl_import will be
|
|
* cleared in client_disconnect_export():
|
|
* class_export_destroy() -> obd_cleanup() ->
|
|
* echo_device_free() -> echo_client_cleanup() ->
|
|
* obd_disconnect() -> osc_disconnect() ->
|
|
* client_disconnect_export()
|
|
*/
|
|
obd_zombie_barrier();
|
|
if (cli->cl_writeback_work) {
|
|
ptlrpcd_destroy_work(cli->cl_writeback_work);
|
|
cli->cl_writeback_work = NULL;
|
|
}
|
|
obd_cleanup_client_import(obd);
|
|
ptlrpc_lprocfs_unregister_obd(obd);
|
|
lprocfs_obd_cleanup(obd);
|
|
break;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int osc_cleanup(struct obd_device *obd)
|
|
{
|
|
struct client_obd *cli = &obd->u.cli;
|
|
int rc;
|
|
|
|
/* lru cleanup */
|
|
if (cli->cl_cache) {
|
|
LASSERT(atomic_read(&cli->cl_cache->ccc_users) > 0);
|
|
spin_lock(&cli->cl_cache->ccc_lru_lock);
|
|
list_del_init(&cli->cl_lru_osc);
|
|
spin_unlock(&cli->cl_cache->ccc_lru_lock);
|
|
cli->cl_lru_left = NULL;
|
|
atomic_dec(&cli->cl_cache->ccc_users);
|
|
cli->cl_cache = NULL;
|
|
}
|
|
|
|
/* free memory of osc quota cache */
|
|
osc_quota_cleanup(obd);
|
|
|
|
rc = client_obd_cleanup(obd);
|
|
|
|
ptlrpcd_decref();
|
|
return rc;
|
|
}
|
|
|
|
int osc_process_config_base(struct obd_device *obd, struct lustre_cfg *lcfg)
|
|
{
|
|
struct lprocfs_static_vars lvars = { NULL };
|
|
int rc = 0;
|
|
|
|
lprocfs_osc_init_vars(&lvars);
|
|
|
|
switch (lcfg->lcfg_command) {
|
|
default:
|
|
rc = class_process_proc_param(PARAM_OSC, lvars.obd_vars,
|
|
lcfg, obd);
|
|
if (rc > 0)
|
|
rc = 0;
|
|
break;
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
|
|
static int osc_process_config(struct obd_device *obd, u32 len, void *buf)
|
|
{
|
|
return osc_process_config_base(obd, buf);
|
|
}
|
|
|
|
static struct obd_ops osc_obd_ops = {
|
|
.owner = THIS_MODULE,
|
|
.setup = osc_setup,
|
|
.precleanup = osc_precleanup,
|
|
.cleanup = osc_cleanup,
|
|
.add_conn = client_import_add_conn,
|
|
.del_conn = client_import_del_conn,
|
|
.connect = client_connect_import,
|
|
.reconnect = osc_reconnect,
|
|
.disconnect = osc_disconnect,
|
|
.statfs = osc_statfs,
|
|
.statfs_async = osc_statfs_async,
|
|
.packmd = osc_packmd,
|
|
.unpackmd = osc_unpackmd,
|
|
.create = osc_create,
|
|
.destroy = osc_destroy,
|
|
.getattr = osc_getattr,
|
|
.getattr_async = osc_getattr_async,
|
|
.setattr = osc_setattr,
|
|
.setattr_async = osc_setattr_async,
|
|
.find_cbdata = osc_find_cbdata,
|
|
.iocontrol = osc_iocontrol,
|
|
.get_info = osc_get_info,
|
|
.set_info_async = osc_set_info_async,
|
|
.import_event = osc_import_event,
|
|
.process_config = osc_process_config,
|
|
.quotactl = osc_quotactl,
|
|
.quotacheck = osc_quotacheck,
|
|
};
|
|
|
|
extern struct lu_kmem_descr osc_caches[];
|
|
extern spinlock_t osc_ast_guard;
|
|
extern struct lock_class_key osc_ast_guard_class;
|
|
|
|
static int __init osc_init(void)
|
|
{
|
|
struct lprocfs_static_vars lvars = { NULL };
|
|
unsigned int reqpool_size;
|
|
unsigned int reqsize;
|
|
int rc;
|
|
|
|
/* print an address of _any_ initialized kernel symbol from this
|
|
* module, to allow debugging with gdb that doesn't support data
|
|
* symbols from modules.
|
|
*/
|
|
CDEBUG(D_INFO, "Lustre OSC module (%p).\n", &osc_caches);
|
|
|
|
rc = lu_kmem_init(osc_caches);
|
|
if (rc)
|
|
return rc;
|
|
|
|
lprocfs_osc_init_vars(&lvars);
|
|
|
|
rc = class_register_type(&osc_obd_ops, NULL,
|
|
LUSTRE_OSC_NAME, &osc_device_type);
|
|
if (rc)
|
|
goto out_kmem;
|
|
|
|
spin_lock_init(&osc_ast_guard);
|
|
lockdep_set_class(&osc_ast_guard, &osc_ast_guard_class);
|
|
|
|
/* This is obviously too much memory, only prevent overflow here */
|
|
if (osc_reqpool_mem_max >= 1 << 12 || osc_reqpool_mem_max == 0) {
|
|
rc = -EINVAL;
|
|
goto out_type;
|
|
}
|
|
|
|
reqpool_size = osc_reqpool_mem_max << 20;
|
|
|
|
reqsize = 1;
|
|
while (reqsize < OST_MAXREQSIZE)
|
|
reqsize = reqsize << 1;
|
|
|
|
/*
|
|
* We don't enlarge the request count in OSC pool according to
|
|
* cl_max_rpcs_in_flight. The allocation from the pool will only be
|
|
* tried after normal allocation failed. So a small OSC pool won't
|
|
* cause much performance degression in most of cases.
|
|
*/
|
|
osc_reqpool_maxreqcount = reqpool_size / reqsize;
|
|
|
|
atomic_set(&osc_pool_req_count, 0);
|
|
osc_rq_pool = ptlrpc_init_rq_pool(0, OST_MAXREQSIZE,
|
|
ptlrpc_add_rqs_to_pool);
|
|
|
|
if (osc_rq_pool)
|
|
return 0;
|
|
|
|
rc = -ENOMEM;
|
|
|
|
out_type:
|
|
class_unregister_type(LUSTRE_OSC_NAME);
|
|
out_kmem:
|
|
lu_kmem_fini(osc_caches);
|
|
return rc;
|
|
}
|
|
|
|
static void /*__exit*/ osc_exit(void)
|
|
{
|
|
class_unregister_type(LUSTRE_OSC_NAME);
|
|
lu_kmem_fini(osc_caches);
|
|
ptlrpc_free_rq_pool(osc_rq_pool);
|
|
}
|
|
|
|
MODULE_AUTHOR("OpenSFS, Inc. <http://www.lustre.org/>");
|
|
MODULE_DESCRIPTION("Lustre Object Storage Client (OSC)");
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_VERSION(LUSTRE_VERSION_STRING);
|
|
|
|
module_init(osc_init);
|
|
module_exit(osc_exit);
|