X-Git-Url: https://git.whamcloud.com/?p=fs%2Flustre-release.git;a=blobdiff_plain;f=lustre%2Fobdclass%2Fllog_obd.c;h=1b4f541e612e26e42fa0616eb433f61b5bfecf52;hp=f8c875b005644af4d5b387377c32da750842600f;hb=9711e0dff8dcf2c7d454245461208124e819bdb6;hpb=0ed515c281646dc3b03631a8e7cf95fbb475392e diff --git a/lustre/obdclass/llog_obd.c b/lustre/obdclass/llog_obd.c index f8c875b..1b4f541 100644 --- a/lustre/obdclass/llog_obd.c +++ b/lustre/obdclass/llog_obd.c @@ -1,395 +1,266 @@ -/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*- - * vim:expandtab:shiftwidth=8:tabstop=8: +/* + * GPL HEADER START * - * Copyright (C) 2005 Cluster File Systems, Inc. + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * - * This file is part of the Lustre file system, http://www.lustre.org - * Lustre is a trademark of Cluster File Systems, Inc. + * 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. * - * You may have signed or agreed to another license before downloading - * this software. If so, you are bound by the terms and conditions - * of that agreement, and the following does not apply to you. See the - * LICENSE file included with this distribution for more information. + * 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). * - * If you did not agree to a different license, then this copy of Lustre - * is open source software; you can redistribute it and/or modify it - * under the terms of version 2 of the GNU General Public License as - * published by the Free Software Foundation. + * 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 * - * In either case, Lustre 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 - * license text for more details. + * 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, 2013, Intel Corporation. + */ +/* + * This file is part of Lustre, http://www.lustre.org/ + * Lustre is a trademark of Sun Microsystems, Inc. */ #define DEBUG_SUBSYSTEM S_LOG -#ifndef EXPORT_SYMTAB -#define EXPORT_SYMTAB -#endif - -#ifndef __KERNEL__ -#include -#endif #include #include -#include #include "llog_internal.h" /* helper functions for calling the llog obd methods */ - -int llog_cleanup(struct llog_ctxt *ctxt) -{ - int rc = 0; - ENTRY; - - if (!ctxt) { - CERROR("No ctxt\n"); - RETURN(-ENODEV); - } - - if (CTXTP(ctxt, cleanup)) - rc = CTXTP(ctxt, cleanup)(ctxt); - ctxt->loc_obd->obd_llog_ctxt[ctxt->loc_idx] = NULL; - - if (ctxt->loc_exp) - class_export_put(ctxt->loc_exp); - OBD_FREE(ctxt, sizeof(*ctxt)); - - RETURN(rc); -} -EXPORT_SYMBOL(llog_cleanup); - -int llog_setup(struct obd_device *obd, struct obd_llogs *llogs, int index, - struct obd_device *disk_obd, int count, struct llog_logid *logid, - struct llog_operations *op) +static struct llog_ctxt* llog_new_ctxt(struct obd_device *obd) { - int rc = 0; struct llog_ctxt *ctxt; - ENTRY; - if (index < 0 || index >= LLOG_MAX_CTXTS) - RETURN(-EFAULT); - - /* in some recovery cases, obd_llog_ctxt might already be set, - * but llogs might still be zero, for example in obd_filter recovery */ - if (obd->obd_llog_ctxt[index] && - (!llogs || (llogs && llogs->llog_ctxt[index]))) { - /* mds_lov_update_mds might call here multiple times. So if the - llog is already set up then don't to do it again. */ - CDEBUG(D_CONFIG, "obd %s ctxt %d already set up\n", - obd->obd_name, index); - ctxt = obd->obd_llog_ctxt[index]; - LASSERT(ctxt->loc_obd == obd); - LASSERT(ctxt->loc_exp == disk_obd->obd_self_export); - LASSERT(ctxt->loc_logops == op); - GOTO(out, rc = 0); - } - - OBD_ALLOC(ctxt, sizeof(*ctxt)); + OBD_ALLOC_PTR(ctxt); if (!ctxt) - GOTO(out, rc = -ENOMEM); - - if (llogs) - llogs->llog_ctxt[index] = ctxt; - - if (!obd->obd_llog_ctxt[index]) - obd->obd_llog_ctxt[index] = ctxt; + return NULL; ctxt->loc_obd = obd; - ctxt->loc_exp = class_export_get(disk_obd->obd_self_export); - ctxt->loc_idx = index; - ctxt->loc_logops = op; - sema_init(&ctxt->loc_sem, 1); + atomic_set(&ctxt->loc_refcount, 1); - if (op->lop_setup) - rc = op->lop_setup(obd, llogs, index, disk_obd, count, logid); + return ctxt; +} - if (rc) { - obd->obd_llog_ctxt[index] = NULL; +static void llog_ctxt_destroy(struct llog_ctxt *ctxt) +{ + if (ctxt->loc_exp) { class_export_put(ctxt->loc_exp); - OBD_FREE(ctxt, sizeof(*ctxt)); + ctxt->loc_exp = NULL; } - -out: - RETURN(rc); + if (ctxt->loc_imp) { + class_import_put(ctxt->loc_imp); + ctxt->loc_imp = NULL; + } + OBD_FREE_PTR(ctxt); } -EXPORT_SYMBOL(llog_setup); -int llog_sync(struct llog_ctxt *ctxt, struct obd_export *exp) +int __llog_ctxt_put(const struct lu_env *env, struct llog_ctxt *ctxt) { + struct obd_llog_group *olg = ctxt->loc_olg; + struct obd_device *obd; int rc = 0; - ENTRY; - if (!ctxt) - RETURN(0); - - if (CTXTP(ctxt, sync)) - rc = CTXTP(ctxt, sync)(ctxt, exp); + spin_lock(&olg->olg_lock); + if (!atomic_dec_and_test(&ctxt->loc_refcount)) { + spin_unlock(&olg->olg_lock); + return rc; + } + olg->olg_ctxts[ctxt->loc_idx] = NULL; + spin_unlock(&olg->olg_lock); + + obd = ctxt->loc_obd; + spin_lock(&obd->obd_dev_lock); + /* sync with llog ctxt user thread */ + spin_unlock(&obd->obd_dev_lock); + + /* obd->obd_starting is needed for the case of cleanup + * in error case while obd is starting up. */ + LASSERTF(obd->obd_starting == 1 || + obd->obd_stopping == 1 || obd->obd_set_up == 0, + "wrong obd state: %d/%d/%d\n", !!obd->obd_starting, + !!obd->obd_stopping, !!obd->obd_set_up); + + /* cleanup the llog ctxt here */ + if (CTXTP(ctxt, cleanup)) + rc = CTXTP(ctxt, cleanup)(env, ctxt); - RETURN(rc); + llog_ctxt_destroy(ctxt); + wake_up(&olg->olg_waitq); + return rc; } -EXPORT_SYMBOL(llog_sync); +EXPORT_SYMBOL(__llog_ctxt_put); -int llog_add(struct llog_ctxt *ctxt, struct llog_rec_hdr *rec, - struct lov_stripe_md *lsm, struct llog_cookie *logcookies, - int numcookies) +int llog_cleanup(const struct lu_env *env, struct llog_ctxt *ctxt) { - int rc; + struct l_wait_info lwi = LWI_INTR(LWI_ON_SIGNAL_NOOP, NULL); + struct obd_llog_group *olg; + int rc, idx; ENTRY; - if (!ctxt) { - CERROR("No ctxt\n"); - RETURN(-ENODEV); - } - - CTXT_CHECK_OP(ctxt, add, -EOPNOTSUPP); - - rc = CTXTP(ctxt, add)(ctxt, rec, lsm, logcookies, numcookies); - RETURN(rc); -} -EXPORT_SYMBOL(llog_add); - -int llog_cancel(struct llog_ctxt *ctxt, struct lov_stripe_md *lsm, - int count, struct llog_cookie *cookies, int flags) -{ - int rc; - ENTRY; + LASSERT(ctxt != NULL); + LASSERT(ctxt != LP_POISON); - if (!ctxt) { - CERROR("No ctxt\n"); - RETURN(-ENODEV); - } - - CTXT_CHECK_OP(ctxt, cancel, -EOPNOTSUPP); - rc = CTXTP(ctxt, cancel)(ctxt, lsm, count, cookies, flags); - RETURN(rc); -} -EXPORT_SYMBOL(llog_cancel); + olg = ctxt->loc_olg; + LASSERT(olg != NULL); + LASSERT(olg != LP_POISON); -/* callback func for llog_process in llog_obd_origin_setup */ -static int cat_cancel_cb(struct llog_handle *cathandle, - struct llog_rec_hdr *rec, void *data) -{ - struct llog_logid_rec *lir = (struct llog_logid_rec *)rec; - struct llog_handle *loghandle; - struct llog_log_hdr *llh; - int rc, index; - ENTRY; + idx = ctxt->loc_idx; - if (rec->lrh_type != LLOG_LOGID_MAGIC) { - CERROR("invalid record in catalog\n"); - RETURN(-EINVAL); - } - CDEBUG(D_HA, "processing log "LPX64":%x at index %u of catalog " - LPX64"\n", lir->lid_id.lgl_oid, lir->lid_id.lgl_ogen, - rec->lrh_index, cathandle->lgh_id.lgl_oid); + /* + * Banlance the ctxt get when calling llog_cleanup() + */ + LASSERT(atomic_read(&ctxt->loc_refcount) < LI_POISON); + LASSERT(atomic_read(&ctxt->loc_refcount) > 1); + llog_ctxt_put(ctxt); - rc = llog_cat_id2handle(cathandle, &loghandle, &lir->lid_id); - if (rc) { - CERROR("Cannot find handle for log "LPX64"\n", - lir->lid_id.lgl_oid); - RETURN(rc); - } + /* + * Try to free the ctxt. + */ + rc = __llog_ctxt_put(env, ctxt); + if (rc) + CERROR("Error %d while cleaning up ctxt %p\n", + rc, ctxt); - llh = loghandle->lgh_hdr; - if ((llh->llh_flags & LLOG_F_ZAP_WHEN_EMPTY) && - (llh->llh_count == 1)) { - rc = llog_destroy(loghandle); - if (rc) - CERROR("failure destroying log in postsetup: %d\n", rc); - - index = loghandle->u.phd.phd_cookie.lgc_index; - llog_free_handle(loghandle); - - LASSERT(index); - llog_cat_set_first_idx(cathandle, index); - rc = llog_cancel_rec(cathandle, index); - if (rc == 0) - CDEBUG(D_HA, "cancel log "LPX64":%x at index %u of catalog " - LPX64"\n", lir->lid_id.lgl_oid, - lir->lid_id.lgl_ogen, rec->lrh_index, - cathandle->lgh_id.lgl_oid); - } + l_wait_event(olg->olg_waitq, + llog_group_ctxt_null(olg, idx), &lwi); RETURN(rc); } +EXPORT_SYMBOL(llog_cleanup); -/* lop_setup method for filter/osc */ -// XXX how to set exports -int llog_obd_origin_setup(struct obd_device *obd, struct obd_llogs *llogs, - int index, struct obd_device *disk_obd, int count, - struct llog_logid *logid) +int llog_setup(const struct lu_env *env, struct obd_device *obd, + struct obd_llog_group *olg, int index, + struct obd_device *disk_obd, struct llog_operations *op) { struct llog_ctxt *ctxt; - struct llog_handle *handle; - struct lvfs_run_ctxt saved; - int rc; + int rc = 0; ENTRY; - if (count == 0) - RETURN(0); + if (index < 0 || index >= LLOG_MAX_CTXTS) + RETURN(-EINVAL); + + LASSERT(olg != NULL); + + ctxt = llog_new_ctxt(obd); + if (!ctxt) + RETURN(-ENOMEM); - LASSERT(count == 1); - - if (!llogs) - ctxt = llog_get_context(obd, index); - else - ctxt = llog_get_context_from_llogs(llogs, index); - - LASSERT(ctxt); - llog_gen_init(ctxt); - - if (logid->lgl_oid) - rc = llog_create(ctxt, &handle, logid, NULL); - else { - rc = llog_create(ctxt, &handle, NULL, NULL); - if (!rc) - *logid = handle->lgh_id; + ctxt->loc_obd = obd; + ctxt->loc_olg = olg; + ctxt->loc_idx = index; + ctxt->loc_logops = op; + mutex_init(&ctxt->loc_mutex); + ctxt->loc_exp = class_export_get(disk_obd->obd_self_export); + ctxt->loc_flags = LLOG_CTXT_FLAG_UNINITIALIZED; + + rc = llog_group_set_ctxt(olg, ctxt, index); + if (rc) { + llog_ctxt_destroy(ctxt); + if (rc == -EEXIST) { + ctxt = llog_group_get_ctxt(olg, index); + if (ctxt) { + /* + * mds_lov_update_desc() might call here multiple + * times. So if the llog is already set up then + * don't to do it again. + */ + CDEBUG(D_CONFIG, "obd %s ctxt %d already set up\n", + obd->obd_name, index); + LASSERT(ctxt->loc_olg == olg); + LASSERT(ctxt->loc_obd == obd); + LASSERT(ctxt->loc_exp == disk_obd->obd_self_export); + LASSERT(ctxt->loc_logops == op); + llog_ctxt_put(ctxt); + } + rc = 0; + } + RETURN(rc); } - if (rc) - GOTO(out, rc); - ctxt->loc_handle = handle; - push_ctxt(&saved, &disk_obd->obd_lvfs_ctxt, NULL); - rc = llog_init_handle(handle, LLOG_F_IS_CAT, NULL); - pop_ctxt(&saved, &disk_obd->obd_lvfs_ctxt, NULL); - if (rc) - GOTO(out, rc); + if (op->lop_setup) { + if (OBD_FAIL_CHECK(OBD_FAIL_OBD_LLOG_SETUP)) + rc = -EOPNOTSUPP; + else + rc = op->lop_setup(env, obd, olg, index, disk_obd); + } + + if (rc) { + CERROR("%s: ctxt %d lop_setup=%p failed: rc = %d\n", + obd->obd_name, index, op->lop_setup, rc); + llog_group_clear_ctxt(olg, index); + llog_ctxt_destroy(ctxt); + } else { + CDEBUG(D_CONFIG, "obd %s ctxt %d is initialized\n", + obd->obd_name, index); + ctxt->loc_flags &= ~LLOG_CTXT_FLAG_UNINITIALIZED; + } - rc = llog_process(handle, (llog_cb_t)cat_cancel_cb, NULL, NULL); - if (rc) - CERROR("llog_process with cat_cancel_cb failed: %d\n", rc); - out: RETURN(rc); } -EXPORT_SYMBOL(llog_obd_origin_setup); +EXPORT_SYMBOL(llog_setup); -int llog_obd_origin_cleanup(struct llog_ctxt *ctxt) +int llog_sync(struct llog_ctxt *ctxt, struct obd_export *exp, int flags) { - struct llog_handle *cathandle, *n, *loghandle; - struct llog_log_hdr *llh; - int rc, index; + int rc = 0; ENTRY; if (!ctxt) RETURN(0); - cathandle = ctxt->loc_handle; - if (cathandle) { - list_for_each_entry_safe(loghandle, n, - &cathandle->u.chd.chd_head, - u.phd.phd_entry) { - llh = loghandle->lgh_hdr; - if ((llh->llh_flags & - LLOG_F_ZAP_WHEN_EMPTY) && - (llh->llh_count == 1)) { - rc = llog_destroy(loghandle); - if (rc) - CERROR("failure destroying log during " - "cleanup: %d\n", rc); - - index = loghandle->u.phd.phd_cookie.lgc_index; - llog_free_handle(loghandle); - - LASSERT(index); - llog_cat_set_first_idx(cathandle, index); - rc = llog_cancel_rec(cathandle, index); - if (rc == 0) - CDEBUG(D_HA, "cancel plain log at index" - " %u of catalog "LPX64"\n", - index,cathandle->lgh_id.lgl_oid); - } - } - llog_cat_put(ctxt->loc_handle); - } - RETURN(0); -} -EXPORT_SYMBOL(llog_obd_origin_cleanup); - -/* add for obdfilter/sz and mds/unlink */ -int llog_obd_origin_add(struct llog_ctxt *ctxt, - struct llog_rec_hdr *rec, struct lov_stripe_md *lsm, - struct llog_cookie *logcookies, int numcookies) -{ - struct llog_handle *cathandle; - int rc; - ENTRY; + if (CTXTP(ctxt, sync)) + rc = CTXTP(ctxt, sync)(ctxt, exp, flags); - cathandle = ctxt->loc_handle; - LASSERT(cathandle != NULL); - rc = llog_cat_add_rec(cathandle, rec, logcookies, NULL); - if (rc != 1) - CERROR("write one catalog record failed: %d\n", rc); RETURN(rc); } -EXPORT_SYMBOL(llog_obd_origin_add); +EXPORT_SYMBOL(llog_sync); -int llog_cat_initialize(struct obd_device *obd, struct obd_llogs *llogs, - int count, struct obd_uuid *uuid) +int llog_cancel(const struct lu_env *env, struct llog_ctxt *ctxt, + struct llog_cookie *cookies, int flags) { - char name[32] = CATLIST; - struct llog_catid *idarray = NULL; - int size = sizeof(*idarray) * count; int rc; ENTRY; - if (count) { - OBD_VMALLOC(idarray, size); - if (!idarray) - RETURN(-ENOMEM); - } - - rc = llog_get_cat_list(obd, obd, name, count, idarray); - if (rc) { - CERROR("rc: %d\n", rc); - GOTO(out, rc); - } - - rc = obd_llog_init(obd, llogs, obd, count, idarray, uuid); - if (rc) { - CERROR("rc: %d\n", rc); - GOTO(out, rc); - } - - rc = llog_put_cat_list(obd, obd, name, count, idarray); - if (rc) { - CERROR("rc: %d\n", rc); - GOTO(out, rc); + if (!ctxt) { + CERROR("No ctxt\n"); + RETURN(-ENODEV); } - out: - if (idarray) - OBD_VFREE(idarray, size); + CTXT_CHECK_OP(ctxt, cancel, -EOPNOTSUPP); + rc = CTXTP(ctxt, cancel)(env, ctxt, cookies, flags); RETURN(rc); } -EXPORT_SYMBOL(llog_cat_initialize); +EXPORT_SYMBOL(llog_cancel); -int obd_llog_init(struct obd_device *obd, struct obd_llogs *llogs, - struct obd_device *disk_obd, int count, - struct llog_catid *logid, struct obd_uuid *uuid) -{ - int rc; - ENTRY; - OBD_CHECK_DT_OP(obd, llog_init, 0); - OBD_COUNTER_INCREMENT(obd, llog_init); +/* context key constructor/destructor: llog_key_init, llog_key_fini */ +LU_KEY_INIT_FINI(llog, struct llog_thread_info); +/* context key: llog_thread_key */ +LU_CONTEXT_KEY_DEFINE(llog, LCT_MD_THREAD | LCT_MG_THREAD | LCT_LOCAL); +LU_KEY_INIT_GENERIC(llog); +EXPORT_SYMBOL(llog_thread_key); - rc = OBP(obd, llog_init)(obd, llogs, disk_obd, count, logid, - uuid); - RETURN(rc); +int llog_info_init(void) +{ + llog_key_init_generic(&llog_thread_key, NULL); + lu_context_key_register(&llog_thread_key); + return 0; } -EXPORT_SYMBOL(obd_llog_init); -int obd_llog_finish(struct obd_device *obd, int count) +void llog_info_fini(void) { - int rc; - ENTRY; - OBD_CHECK_DT_OP(obd, llog_finish, 0); - OBD_COUNTER_INCREMENT(obd, llog_finish); - - rc = OBP(obd, llog_finish)(obd, count); - RETURN(rc); + lu_context_key_degister(&llog_thread_key); } -EXPORT_SYMBOL(obd_llog_finish); -