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
20 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
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 (c) 2003, 2010, Oracle and/or its affiliates. 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/mds/mds_log.c
38 * Author: Peter Braam <braam@clusterfs.com>
39 * Author: Andreas Dilger <adilger@clusterfs.com>
40 * Author: Phil Schwan <phil@clusterfs.com>
43 #define DEBUG_SUBSYSTEM S_MDS
45 #ifndef AUTOCONF_INCLUDED
46 #include <linux/config.h>
48 #include <linux/module.h>
49 #include <linux/version.h>
51 #include <libcfs/list.h>
52 #include <obd_class.h>
53 #include <lustre_fsfilt.h>
54 #include <lustre_mds.h>
55 #include <lustre_log.h>
56 #include "mds_internal.h"
58 static int mds_llog_origin_add(struct llog_ctxt *ctxt, struct llog_rec_hdr *rec,
59 struct lov_stripe_md *lsm,
60 struct llog_cookie *logcookies, int numcookies)
62 struct obd_device *obd = ctxt->loc_obd;
63 struct obd_device *lov_obd = obd->u.mds.mds_osc_obd;
64 struct llog_ctxt *lctxt;
68 lctxt = llog_get_context(lov_obd, ctxt->loc_idx);
69 rc = llog_add(lctxt, rec, lsm, logcookies, numcookies);
75 static int mds_llog_origin_connect(struct llog_ctxt *ctxt,
76 struct llog_logid *logid,
78 struct obd_uuid *uuid)
80 struct obd_device *obd = ctxt->loc_obd;
81 struct obd_device *lov_obd = obd->u.mds.mds_osc_obd;
82 struct llog_ctxt *lctxt;
86 lctxt = llog_get_context(lov_obd, ctxt->loc_idx);
87 rc = llog_connect(lctxt, logid, gen, uuid);
92 static struct llog_operations mds_ost_orig_logops = {
93 lop_add: mds_llog_origin_add,
94 lop_connect: mds_llog_origin_connect,
97 static int mds_llog_repl_cancel(struct llog_ctxt *ctxt, struct lov_stripe_md *lsm,
98 int count, struct llog_cookie *cookies, int flags)
100 struct obd_device *obd = ctxt->loc_obd;
101 struct obd_device *lov_obd = obd->u.mds.mds_osc_obd;
102 struct llog_ctxt *lctxt;
106 lctxt = llog_get_context(lov_obd, ctxt->loc_idx);
107 rc = llog_cancel(lctxt, lsm, count, cookies, flags);
108 llog_ctxt_put(lctxt);
112 static struct llog_operations mds_size_repl_logops = {
113 lop_cancel: mds_llog_repl_cancel,
116 static struct llog_operations changelog_orig_logops;
118 static int llog_changelog_cancel_cb(struct llog_handle *llh,
119 struct llog_rec_hdr *hdr, void *data)
121 struct llog_changelog_rec *rec = (struct llog_changelog_rec *)hdr;
122 struct llog_cookie cookie;
123 long long endrec = *(long long *)data;
127 /* This is always a (sub)log, not the catalog */
128 LASSERT(llh->lgh_hdr->llh_flags & LLOG_F_IS_PLAIN);
130 if (rec->cr.cr_index > endrec)
131 /* records are in order, so we're done */
132 RETURN(LLOG_PROC_BREAK);
134 cookie.lgc_lgl = llh->lgh_id;
135 cookie.lgc_index = hdr->lrh_index;
137 /* cancel them one at a time. I suppose we could store up the cookies
138 and cancel them all at once; probably more efficient, but this is
139 done as a user call, so who cares... */
140 rc = llog_cat_cancel_records(llh->u.phd.phd_cat_handle, 1, &cookie);
141 RETURN(rc < 0 ? rc : 0);
144 static int llog_changelog_cancel(struct llog_ctxt *ctxt,
145 struct lov_stripe_md *lsm, int count,
146 struct llog_cookie *cookies, int flags)
148 struct llog_handle *cathandle = ctxt->loc_handle;
152 /* This should only be called with the catalog handle */
153 LASSERT(cathandle->lgh_hdr->llh_flags & LLOG_F_IS_CAT);
155 rc = llog_cat_process(cathandle, llog_changelog_cancel_cb,
156 (void *)cookies, 0, 0);
158 /* 0 or 1 means we're done */
161 CERROR("cancel idx %u of catalog "LPX64" rc=%d\n",
162 cathandle->lgh_last_idx, cathandle->lgh_id.lgl_oid, rc);
167 int mds_changelog_llog_init(struct obd_device *obd, struct obd_device *tgt)
171 /* see osc_llog_init */
172 changelog_orig_logops = llog_lvfs_ops;
173 changelog_orig_logops.lop_setup = llog_obd_origin_setup;
174 changelog_orig_logops.lop_cleanup = llog_obd_origin_cleanup;
175 changelog_orig_logops.lop_add = llog_obd_origin_add;
176 changelog_orig_logops.lop_cancel = llog_changelog_cancel;
178 rc = llog_setup_named(obd, &obd->obd_olg, LLOG_CHANGELOG_ORIG_CTXT,
179 tgt, 1, NULL, CHANGELOG_CATALOG,
180 &changelog_orig_logops);
182 CERROR("changelog llog setup failed %d\n", rc);
186 rc = llog_setup_named(obd, &obd->obd_olg, LLOG_CHANGELOG_USER_ORIG_CTXT,
187 tgt, 1, NULL, CHANGELOG_USERS,
188 &changelog_orig_logops);
190 CERROR("changelog users llog setup failed %d\n", rc);
196 EXPORT_SYMBOL(mds_changelog_llog_init);
198 int mds_llog_init(struct obd_device *obd, struct obd_llog_group *olg,
199 struct obd_device *disk_obd, int *index)
201 struct obd_device *lov_obd = obd->u.mds.mds_osc_obd;
202 struct llog_ctxt *ctxt;
206 LASSERT(olg == &obd->obd_olg);
207 rc = llog_setup(obd, &obd->obd_olg, LLOG_MDS_OST_ORIG_CTXT, disk_obd,
208 0, NULL, &mds_ost_orig_logops);
212 rc = llog_setup(obd, &obd->obd_olg, LLOG_SIZE_REPL_CTXT, disk_obd,
213 0, NULL, &mds_size_repl_logops);
217 rc = obd_llog_init(lov_obd, &lov_obd->obd_olg, disk_obd, index);
219 CERROR("lov_llog_init err %d\n", rc);
220 GOTO(err_cleanup, rc);
225 ctxt = llog_get_context(obd, LLOG_SIZE_REPL_CTXT);
229 ctxt = llog_get_context(obd, LLOG_MDS_OST_ORIG_CTXT);
235 int mds_llog_finish(struct obd_device *obd, int count)
237 struct llog_ctxt *ctxt;
241 ctxt = llog_get_context(obd, LLOG_MDS_OST_ORIG_CTXT);
243 rc = llog_cleanup(ctxt);
245 ctxt = llog_get_context(obd, LLOG_SIZE_REPL_CTXT);
247 rc2 = llog_cleanup(ctxt);
251 ctxt = llog_get_context(obd, LLOG_CHANGELOG_ORIG_CTXT);
253 rc2 = llog_cleanup(ctxt);
257 ctxt = llog_get_context(obd, LLOG_CHANGELOG_USER_ORIG_CTXT);
259 rc2 = llog_cleanup(ctxt);
266 static int mds_llog_add_unlink(struct obd_device *obd,
267 struct lov_stripe_md *lsm, obd_count count,
268 struct llog_cookie *logcookie, int cookies)
270 struct llog_unlink_rec *lur;
271 struct llog_ctxt *ctxt;
274 /* first prepare unlink log record */
277 RETURN(rc = -ENOMEM);
278 lur->lur_hdr.lrh_len = lur->lur_tail.lrt_len = sizeof(*lur);
279 lur->lur_hdr.lrh_type = MDS_UNLINK_REC;
280 lur->lur_count = count;
282 ctxt = llog_get_context(obd, LLOG_MDS_OST_ORIG_CTXT);
283 rc = llog_add(ctxt, &lur->lur_hdr, lsm, logcookie, cookies);
290 int mds_log_op_unlink(struct obd_device *obd,
291 struct lov_mds_md *lmm, int lmm_size,
292 struct llog_cookie *logcookies, int cookies_size)
294 struct mds_obd *mds = &obd->u.mds;
295 struct lov_stripe_md *lsm = NULL;
299 if (IS_ERR(mds->mds_osc_obd))
300 RETURN(PTR_ERR(mds->mds_osc_obd));
302 rc = obd_unpackmd(mds->mds_osc_exp, &lsm, lmm, lmm_size);
305 rc = mds_llog_add_unlink(obd, lsm, 0, logcookies,
306 cookies_size / sizeof(struct llog_cookie));
307 obd_free_memmd(mds->mds_osc_exp, &lsm);
310 EXPORT_SYMBOL(mds_log_op_unlink);
312 int mds_log_op_orphan(struct obd_device *obd, struct lov_stripe_md *lsm,
315 struct mds_obd *mds = &obd->u.mds;
316 struct llog_cookie logcookie;
320 if (IS_ERR(mds->mds_osc_obd))
321 RETURN(PTR_ERR(mds->mds_osc_obd));
323 rc = mds_llog_add_unlink(obd, lsm, count - 1, &logcookie, 1);