+++ /dev/null
-/*
- * GPL HEADER START
- *
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 only,
- * as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License version 2 for more details (a copy is included
- * in the LICENSE file that accompanied this code).
- *
- * You should have received a copy of the GNU General Public License
- * version 2 along with this program; If not, see
- * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
- *
- * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
- * CA 95054 USA or visit www.sun.com if you need additional information or
- * have any questions.
- *
- * GPL HEADER END
- */
-/*
- * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
- * Use is subject to license terms.
- *
- * Copyright (c) 2012, Whamcloud, Inc.
- */
-/*
- * This file is part of Lustre, http://www.lustre.org/
- * Lustre is a trademark of Sun Microsystems, Inc.
- *
- * lustre/mds/mds_log.c
- *
- * Author: Peter Braam <braam@clusterfs.com>
- * Author: Andreas Dilger <adilger@clusterfs.com>
- * Author: Phil Schwan <phil@clusterfs.com>
- */
-
-#define DEBUG_SUBSYSTEM S_MDS
-
-#include <linux/module.h>
-#include <linux/version.h>
-
-#include <libcfs/list.h>
-#include <obd_class.h>
-#include <lustre_fsfilt.h>
-#include <lustre_mds.h>
-#include <lustre_log.h>
-
-#include "mds_internal.h"
-
-static int mds_llog_origin_add(const struct lu_env *env,
- struct llog_ctxt *ctxt,
- struct llog_rec_hdr *rec,
- struct lov_stripe_md *lsm,
- struct llog_cookie *logcookies, int numcookies)
-{
- struct obd_device *obd = ctxt->loc_obd;
- struct obd_device *lov_obd = obd->u.mds.mds_lov_obd;
- struct llog_ctxt *lctxt;
- int rc;
- ENTRY;
-
- lctxt = llog_get_context(lov_obd, ctxt->loc_idx);
- rc = llog_obd_add(env, lctxt, rec, lsm, logcookies, numcookies);
- llog_ctxt_put(lctxt);
-
- RETURN(rc);
-}
-
-static int mds_llog_origin_connect(struct llog_ctxt *ctxt,
- struct llog_logid *logid,
- struct llog_gen *gen,
- struct obd_uuid *uuid)
-{
- struct obd_device *obd = ctxt->loc_obd;
- struct obd_device *lov_obd = obd->u.mds.mds_lov_obd;
- struct llog_ctxt *lctxt;
- int rc;
- ENTRY;
-
- lctxt = llog_get_context(lov_obd, ctxt->loc_idx);
- rc = llog_connect(lctxt, logid, gen, uuid);
- llog_ctxt_put(lctxt);
- RETURN(rc);
-}
-
-static struct llog_operations mds_ost_orig_logops = {
- .lop_obd_add = mds_llog_origin_add,
- .lop_connect = mds_llog_origin_connect,
-};
-
-static int mds_llog_repl_cancel(const struct lu_env *env,
- struct llog_ctxt *ctxt,
- struct lov_stripe_md *lsm,
- int count, struct llog_cookie *cookies,
- int flags)
-{
- struct obd_device *obd = ctxt->loc_obd;
- struct obd_device *lov_obd = obd->u.mds.mds_lov_obd;
- struct llog_ctxt *lctxt;
- int rc;
- ENTRY;
-
- lctxt = llog_get_context(lov_obd, ctxt->loc_idx);
- rc = llog_cancel(env, lctxt, lsm, count, cookies, flags);
- llog_ctxt_put(lctxt);
- RETURN(rc);
-}
-
-static struct llog_operations mds_size_repl_logops = {
- lop_cancel: mds_llog_repl_cancel,
-};
-
-int mds_llog_init(struct obd_device *obd, struct obd_llog_group *olg,
- struct obd_device *disk_obd, int *index)
-{
- struct obd_device *lov_obd = obd->u.mds.mds_lov_obd;
- struct llog_ctxt *ctxt;
- int rc;
- ENTRY;
-
- LASSERT(olg == &obd->obd_olg);
- rc = llog_setup(NULL, obd, &obd->obd_olg, LLOG_MDS_OST_ORIG_CTXT,
- disk_obd, &mds_ost_orig_logops);
- if (rc)
- RETURN(rc);
-
- rc = llog_setup(NULL, obd, &obd->obd_olg, LLOG_SIZE_REPL_CTXT,
- disk_obd, &mds_size_repl_logops);
- if (rc)
- GOTO(err_llog, rc);
-
- rc = obd_llog_init(lov_obd, &lov_obd->obd_olg, disk_obd, index);
- if (rc) {
- CERROR("lov_llog_init err %d\n", rc);
- GOTO(err_cleanup, rc);
- }
-
- RETURN(rc);
-err_cleanup:
- ctxt = llog_get_context(obd, LLOG_SIZE_REPL_CTXT);
- if (ctxt)
- llog_cleanup(NULL, ctxt);
-err_llog:
- ctxt = llog_get_context(obd, LLOG_MDS_OST_ORIG_CTXT);
- if (ctxt)
- llog_cleanup(NULL, ctxt);
- return rc;
-}
-
-int mds_llog_finish(struct obd_device *obd, int count)
-{
- struct llog_ctxt *ctxt;
-
- ENTRY;
-
- ctxt = llog_get_context(obd, LLOG_MDS_OST_ORIG_CTXT);
- if (ctxt)
- llog_cleanup(NULL, ctxt);
-
- ctxt = llog_get_context(obd, LLOG_SIZE_REPL_CTXT);
- if (ctxt)
- llog_cleanup(NULL, ctxt);
-
- RETURN(0);
-}
-
-static int mds_llog_add_unlink(struct obd_device *obd,
- struct lov_stripe_md *lsm, obd_count count,
- struct llog_cookie *logcookie, int cookies)
-{
- struct llog_unlink_rec *lur;
- struct llog_ctxt *ctxt;
- int rc;
-
- if (cookies < lsm->lsm_stripe_count)
- RETURN(rc = -EFBIG);
-
- /* first prepare unlink log record */
- OBD_ALLOC_PTR(lur);
- if (!lur)
- RETURN(rc = -ENOMEM);
- lur->lur_hdr.lrh_len = lur->lur_tail.lrt_len = sizeof(*lur);
- lur->lur_hdr.lrh_type = MDS_UNLINK_REC;
- lur->lur_count = count;
-
- ctxt = llog_get_context(obd, LLOG_MDS_OST_ORIG_CTXT);
- rc = llog_obd_add(NULL, ctxt, &lur->lur_hdr, lsm, logcookie, cookies);
- llog_ctxt_put(ctxt);
-
- OBD_FREE_PTR(lur);
- RETURN(rc);
-}
-
-int mds_log_op_unlink(struct obd_device *obd,
- struct lov_mds_md *lmm, int lmm_size,
- struct llog_cookie *logcookies, int cookies_size)
-{
- struct mds_obd *mds = &obd->u.mds;
- struct lov_stripe_md *lsm = NULL;
- int rc;
- ENTRY;
-
- if (IS_ERR(mds->mds_lov_obd))
- RETURN(PTR_ERR(mds->mds_lov_obd));
-
- rc = obd_unpackmd(mds->mds_lov_exp, &lsm, lmm, lmm_size);
- if (rc < 0)
- RETURN(rc);
- rc = mds_llog_add_unlink(obd, lsm, 0, logcookies,
- cookies_size / sizeof(struct llog_cookie));
- obd_free_memmd(mds->mds_lov_exp, &lsm);
- RETURN(rc);
-}
-EXPORT_SYMBOL(mds_log_op_unlink);
-
-int mds_log_op_orphan(struct obd_device *obd, struct lov_stripe_md *lsm,
- obd_count count)
-{
- struct mds_obd *mds = &obd->u.mds;
- struct llog_cookie logcookie;
- int rc;
- ENTRY;
-
- if (IS_ERR(mds->mds_lov_obd))
- RETURN(PTR_ERR(mds->mds_lov_obd));
-
- rc = mds_llog_add_unlink(obd, lsm, count - 1, &logcookie, 1);
- RETURN(rc);
-}
-
git://git.whamcloud.com / fs / lustre-release.git / blobdiff