1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
6 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 only,
10 * as published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License version 2 for more details (a copy is included
16 * in the LICENSE file that accompanied this code).
18 * You should have received a copy of the GNU General Public License
19 * version 2 along with this program; If not, see [sun.com URL with a
22 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
23 * CA 95054 USA or visit www.sun.com if you need additional information or
29 * Copyright 2008 Sun Microsystems, Inc. All rights reserved
30 * Use is subject to license terms.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
36 * lustre/lov/lov_log.c
38 * Author: Phil Schwan <phil@clusterfs.com>
39 * Author: Peter Braam <braam@clusterfs.com>
40 * Author: Mike Shaver <shaver@clusterfs.com>
44 # define EXPORT_SYMTAB
46 #define DEBUG_SUBSYSTEM S_LOV
48 #include <libcfs/libcfs.h>
50 #include <liblustre.h>
53 #include <obd_support.h>
54 #include <lustre_lib.h>
55 #include <lustre_net.h>
56 #include <lustre/lustre_idl.h>
57 #include <lustre_dlm.h>
58 #include <lustre_mds.h>
59 #include <obd_class.h>
62 #include <lprocfs_status.h>
64 #include "lov_internal.h"
66 /* Add log records for each OSC that this object is striped over, and return
67 * cookies for each one. We _would_ have nice abstraction here, except that
68 * we need to keep cookies in stripe order, even if some are NULL, so that
69 * the right cookies are passed back to the right OSTs at the client side.
70 * Unset cookies should be all-zero (which will never occur naturally). */
71 static int lov_llog_origin_add(struct llog_ctxt *ctxt,
72 struct llog_rec_hdr *rec, struct lov_stripe_md *lsm,
73 struct llog_cookie *logcookies, int numcookies)
75 struct obd_device *obd = ctxt->loc_obd;
76 struct lov_obd *lov = &obd->u.lov;
80 LASSERTF(logcookies && numcookies >= lsm->lsm_stripe_count,
81 "logcookies %p, numcookies %d lsm->lsm_stripe_count %d \n",
82 logcookies, numcookies, lsm->lsm_stripe_count);
84 for (i = 0; i < lsm->lsm_stripe_count; i++) {
85 struct lov_oinfo *loi = lsm->lsm_oinfo[i];
86 struct obd_device *child =
87 lov->lov_tgts[loi->loi_ost_idx]->ltd_exp->exp_obd;
88 struct llog_ctxt *cctxt = llog_get_context(child, ctxt->loc_idx);
90 /* fill mds unlink/setattr log record */
91 switch (rec->lrh_type) {
92 case MDS_UNLINK_REC: {
93 struct llog_unlink_rec *lur = (struct llog_unlink_rec *)rec;
94 lur->lur_oid = loi->loi_id;
95 lur->lur_ogen = loi->loi_gr;
98 case MDS_SETATTR_REC: {
99 struct llog_setattr_rec *lsr = (struct llog_setattr_rec *)rec;
100 lsr->lsr_oid = loi->loi_id;
101 lsr->lsr_ogen = loi->loi_gr;
107 LASSERT(lsm->lsm_object_gr == loi->loi_gr);
108 rc1 = llog_add(cctxt, rec, NULL, logcookies + rc,
110 llog_ctxt_put(cctxt);
119 static int lov_llog_origin_connect(struct llog_ctxt *ctxt, int count,
120 struct llog_logid *logid,
121 struct llog_gen *gen,
122 struct obd_uuid *uuid)
124 struct obd_device *obd = ctxt->loc_obd;
125 struct lov_obd *lov = &obd->u.lov;
126 int i, rc = 0, err = 0;
130 for (i = 0; i < count; i++) {
131 struct obd_device *child;
132 struct llog_ctxt *cctxt;
134 if (!lov->lov_tgts[i] || !lov->lov_tgts[i]->ltd_active)
136 if (uuid && !obd_uuid_equals(uuid, &lov->lov_tgts[i]->ltd_uuid))
138 CDEBUG(D_CONFIG, "connect %d/%d\n", i, count);
139 child = lov->lov_tgts[i]->ltd_exp->exp_obd;
140 cctxt = llog_get_context(child, ctxt->loc_idx);
141 rc = llog_connect(cctxt, 1, logid, gen, uuid);
142 llog_ctxt_put(cctxt);
145 CERROR("error osc_llog_connect tgt %d (%d)\n", i, rc);
155 /* the replicators commit callback */
156 static int lov_llog_repl_cancel(struct llog_ctxt *ctxt, struct lov_stripe_md *lsm,
157 int count, struct llog_cookie *cookies, int flags)
160 struct obd_device *obd = ctxt->loc_obd;
164 LASSERT(lsm != NULL);
165 LASSERT(count == lsm->lsm_stripe_count);
169 for (i = 0; i < count; i++, cookies++) {
170 struct lov_oinfo *loi = lsm->lsm_oinfo[i];
171 struct obd_device *child =
172 lov->lov_tgts[loi->loi_ost_idx]->ltd_exp->exp_obd;
173 struct llog_ctxt *cctxt =
174 llog_get_context(child, ctxt->loc_idx);
177 err = llog_cancel(cctxt, NULL, 1, cookies, flags);
178 llog_ctxt_put(cctxt);
179 if (err && lov->lov_tgts[loi->loi_ost_idx]->ltd_active) {
180 CERROR("error: objid "LPX64" subobj "LPX64
181 " on OST idx %d: rc = %d\n", lsm->lsm_object_id,
182 loi->loi_id, loi->loi_ost_idx, err);
191 static struct llog_operations lov_mds_ost_orig_logops = {
192 lop_add: lov_llog_origin_add,
193 lop_connect: lov_llog_origin_connect
196 static struct llog_operations lov_size_repl_logops = {
197 lop_cancel: lov_llog_repl_cancel
200 int lov_llog_init(struct obd_device *obd, struct obd_llog_group *olg,
201 struct obd_device *tgt, int count, struct llog_catid *logid,
202 struct obd_uuid *uuid)
204 struct lov_obd *lov = &obd->u.lov;
205 struct obd_device *child;
206 int i, rc = 0, err = 0;
209 LASSERT(olg == &obd->obd_olg);
210 rc = llog_setup(obd, olg, LLOG_MDS_OST_ORIG_CTXT, tgt, 0, NULL,
211 &lov_mds_ost_orig_logops);
215 rc = llog_setup(obd, olg, LLOG_SIZE_REPL_CTXT, tgt, 0, NULL,
216 &lov_size_repl_logops);
221 /* count may not match lov->desc.ld_tgt_count during dynamic ost add */
222 for (i = 0; i < count; i++) {
223 if (!lov->lov_tgts[i] || !lov->lov_tgts[i]->ltd_active)
225 if (uuid && !obd_uuid_equals(uuid, &lov->lov_tgts[i]->ltd_uuid))
227 CDEBUG(D_CONFIG, "init %d/%d\n", i, count);
228 LASSERT(lov->lov_tgts[i]->ltd_exp);
229 child = lov->lov_tgts[i]->ltd_exp->exp_obd;
230 rc = obd_llog_init(child, &child->obd_olg, tgt, 1, logid + i, uuid);
232 CERROR("error osc_llog_init idx %d osc '%s' tgt '%s' "
233 "(rc=%d)\n", i, child->obd_name, tgt->obd_name,
243 int lov_llog_finish(struct obd_device *obd, int count)
245 struct llog_ctxt *ctxt;
249 /* cleanup our llogs only if the ctxts have been setup
250 * (client lov doesn't setup, mds lov does). */
251 ctxt = llog_get_context(obd, LLOG_MDS_OST_ORIG_CTXT);
253 rc = llog_cleanup(ctxt);
255 ctxt = llog_get_context(obd, LLOG_SIZE_REPL_CTXT);
257 rc2 = llog_cleanup(ctxt);
261 /* lov->tgt llogs are cleaned during osc_cleanup. */