diff options
Diffstat (limited to 'drivers/staging/lustre/lustre/lov/lov_log.c')
-rw-r--r-- | drivers/staging/lustre/lustre/lov/lov_log.c | 278 |
1 files changed, 278 insertions, 0 deletions
diff --git a/drivers/staging/lustre/lustre/lov/lov_log.c b/drivers/staging/lustre/lustre/lov/lov_log.c new file mode 100644 index 000000000000..63b7f8d3182f --- /dev/null +++ b/drivers/staging/lustre/lustre/lov/lov_log.c @@ -0,0 +1,278 @@ +/* + * 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, Intel Corporation. + */ +/* + * This file is part of Lustre, http://www.lustre.org/ + * Lustre is a trademark of Sun Microsystems, Inc. + * + * lustre/lov/lov_log.c + * + * Author: Phil Schwan <phil@clusterfs.com> + * Author: Peter Braam <braam@clusterfs.com> + * Author: Mike Shaver <shaver@clusterfs.com> + */ + +#define DEBUG_SUBSYSTEM S_LOV +#include <linux/libcfs/libcfs.h> + +#include <obd_support.h> +#include <lustre_lib.h> +#include <lustre_net.h> +#include <lustre/lustre_idl.h> +#include <lustre_dlm.h> +#include <lustre_mds.h> +#include <obd_class.h> +#include <obd_lov.h> +#include <obd_ost.h> +#include <lprocfs_status.h> +#include <lustre_log.h> + +#include "lov_internal.h" + +/* Add log records for each OSC that this object is striped over, and return + * cookies for each one. We _would_ have nice abstraction here, except that + * we need to keep cookies in stripe order, even if some are NULL, so that + * the right cookies are passed back to the right OSTs at the client side. + * Unset cookies should be all-zero (which will never occur naturally). */ +static int lov_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 lov_obd *lov = &obd->u.lov; + int i, rc = 0, cookies = 0; + ENTRY; + + LASSERTF(logcookies && numcookies >= lsm->lsm_stripe_count, + "logcookies %p, numcookies %d lsm->lsm_stripe_count %d \n", + logcookies, numcookies, lsm->lsm_stripe_count); + + for (i = 0; i < lsm->lsm_stripe_count; i++) { + struct lov_oinfo *loi = lsm->lsm_oinfo[i]; + struct obd_device *child = + lov->lov_tgts[loi->loi_ost_idx]->ltd_exp->exp_obd; + struct llog_ctxt *cctxt = llog_get_context(child, ctxt->loc_idx); + + /* fill mds unlink/setattr log record */ + switch (rec->lrh_type) { + case MDS_UNLINK_REC: { + struct llog_unlink_rec *lur = (struct llog_unlink_rec *)rec; + lur->lur_oid = ostid_id(&loi->loi_oi); + lur->lur_oseq = (__u32)ostid_seq(&loi->loi_oi); + break; + } + case MDS_SETATTR64_REC: { + struct llog_setattr64_rec *lsr = (struct llog_setattr64_rec *)rec; + lsr->lsr_oi = loi->loi_oi; + break; + } + default: + break; + } + + /* inject error in llog_obd_add() below */ + if (OBD_FAIL_CHECK(OBD_FAIL_MDS_FAIL_LOV_LOG_ADD)) { + llog_ctxt_put(cctxt); + cctxt = NULL; + } + rc = llog_obd_add(env, cctxt, rec, NULL, logcookies + cookies, + numcookies - cookies); + llog_ctxt_put(cctxt); + if (rc < 0) { + CERROR("Can't add llog (rc = %d) for stripe %d\n", + rc, cookies); + memset(logcookies + cookies, 0, + sizeof(struct llog_cookie)); + rc = 1; /* skip this cookie */ + } + /* Note that rc is always 1 if llog_obd_add was successful */ + cookies += rc; + } + RETURN(cookies); +} + +static int lov_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 lov_obd *lov = &obd->u.lov; + int i, rc = 0, err = 0; + ENTRY; + + obd_getref(obd); + for (i = 0; i < lov->desc.ld_tgt_count; i++) { + struct obd_device *child; + struct llog_ctxt *cctxt; + + if (!lov->lov_tgts[i] || !lov->lov_tgts[i]->ltd_active) + continue; + if (uuid && !obd_uuid_equals(uuid, &lov->lov_tgts[i]->ltd_uuid)) + continue; + CDEBUG(D_CONFIG, "connect %d/%d\n", i, lov->desc.ld_tgt_count); + child = lov->lov_tgts[i]->ltd_exp->exp_obd; + cctxt = llog_get_context(child, ctxt->loc_idx); + rc = llog_connect(cctxt, logid, gen, uuid); + llog_ctxt_put(cctxt); + + if (rc) { + CERROR("error osc_llog_connect tgt %d (%d)\n", i, rc); + if (!err) + err = rc; + } + } + obd_putref(obd); + + RETURN(err); +} + +/* the replicators commit callback */ +static int lov_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 lov_obd *lov; + struct obd_device *obd = ctxt->loc_obd; + int rc = 0, i; + ENTRY; + + LASSERT(lsm != NULL); + LASSERT(count == lsm->lsm_stripe_count); + + lov = &obd->u.lov; + obd_getref(obd); + for (i = 0; i < count; i++, cookies++) { + struct lov_oinfo *loi = lsm->lsm_oinfo[i]; + struct obd_device *child = + lov->lov_tgts[loi->loi_ost_idx]->ltd_exp->exp_obd; + struct llog_ctxt *cctxt = + llog_get_context(child, ctxt->loc_idx); + int err; + + err = llog_cancel(env, cctxt, NULL, 1, cookies, flags); + llog_ctxt_put(cctxt); + if (err && lov->lov_tgts[loi->loi_ost_idx]->ltd_active) { + CERROR("%s: objid "DOSTID" subobj "DOSTID + " on OST idx %d: rc = %d\n", + obd->obd_name, POSTID(&lsm->lsm_oi), + POSTID(&loi->loi_oi), loi->loi_ost_idx, err); + if (!rc) + rc = err; + } + } + obd_putref(obd); + RETURN(rc); +} + +static struct llog_operations lov_mds_ost_orig_logops = { + .lop_obd_add = lov_llog_origin_add, + .lop_connect = lov_llog_origin_connect, +}; + +static struct llog_operations lov_size_repl_logops = { + .lop_cancel = lov_llog_repl_cancel, +}; + +int lov_llog_init(struct obd_device *obd, struct obd_llog_group *olg, + struct obd_device *disk_obd, int *index) +{ + struct lov_obd *lov = &obd->u.lov; + struct obd_device *child; + int i, rc = 0; + ENTRY; + + LASSERT(olg == &obd->obd_olg); + rc = llog_setup(NULL, obd, olg, LLOG_MDS_OST_ORIG_CTXT, disk_obd, + &lov_mds_ost_orig_logops); + if (rc) + RETURN(rc); + + rc = llog_setup(NULL, obd, olg, LLOG_SIZE_REPL_CTXT, disk_obd, + &lov_size_repl_logops); + if (rc) + GOTO(err_cleanup, rc); + + obd_getref(obd); + /* count may not match lov->desc.ld_tgt_count during dynamic ost add */ + for (i = 0; i < lov->desc.ld_tgt_count; i++) { + if (!lov->lov_tgts[i]) + continue; + + if (index && i != *index) + continue; + + child = lov->lov_tgts[i]->ltd_obd; + rc = obd_llog_init(child, &child->obd_olg, disk_obd, &i); + if (rc) + CERROR("error osc_llog_init idx %d osc '%s' tgt '%s' " + "(rc=%d)\n", i, child->obd_name, + disk_obd->obd_name, rc); + rc = 0; + } + obd_putref(obd); + GOTO(err_cleanup, rc); +err_cleanup: + if (rc) { + struct llog_ctxt *ctxt = + llog_get_context(obd, LLOG_SIZE_REPL_CTXT); + if (ctxt) + llog_cleanup(NULL, ctxt); + ctxt = llog_get_context(obd, LLOG_MDS_OST_ORIG_CTXT); + if (ctxt) + llog_cleanup(NULL, ctxt); + } + return rc; +} + +int lov_llog_finish(struct obd_device *obd, int count) +{ + struct llog_ctxt *ctxt; + + ENTRY; + + /* cleanup our llogs only if the ctxts have been setup + * (client lov doesn't setup, mds lov does). */ + 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); + + /* lov->tgt llogs are cleaned during osc_cleanup. */ + RETURN(0); +} |