X-Git-Url: https://git.whamcloud.com/?p=fs%2Flustre-release.git;a=blobdiff_plain;f=lustre%2Fobdclass%2Fllog_obd.c;h=b84e9dc3232bdd3c666674ace8ccf2b534dbb361;hp=9c9abb735384cf9a1c864a39f16589b979bc1c08;hb=801469af8c31afad1bd8aaa23b01bfc42abe45eb;hpb=c5050e412572b00cbe93d8517d2d1f767bebfa92 diff --git a/lustre/obdclass/llog_obd.c b/lustre/obdclass/llog_obd.c index 9c9abb7..b84e9dc 100644 --- a/lustre/obdclass/llog_obd.c +++ b/lustre/obdclass/llog_obd.c @@ -1,185 +1,307 @@ - -/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*- - * vim:expandtab:shiftwidth=8:tabstop=8: +/* + * 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 * - * You should have received a copy of the GNU General Public License - * along with Lustre; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + * 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. */ #define DEBUG_SUBSYSTEM S_LOG -#ifndef EXPORT_SYMTAB -#define EXPORT_SYMTAB -#endif - -#ifdef __KERNEL__ -#include -#else +#ifndef __KERNEL__ #include #endif -#include -#include -#include +#include +#include +#include #include "llog_internal.h" /* helper functions for calling the llog obd methods */ - -int llog_setup(struct obd_device *obd, 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); - - OBD_ALLOC(ctxt, sizeof(*ctxt)); + OBD_ALLOC_PTR(ctxt); if (!ctxt) - RETURN(-ENOMEM); + return NULL; - obd->obd_llog_ctxt[index] = ctxt; 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); + cfs_atomic_set(&ctxt->loc_refcount, 1); - if (op->lop_setup) - rc = op->lop_setup(obd, index, disk_obd, count, logid); - if (ctxt && rc) - OBD_FREE(ctxt, sizeof(*ctxt)); + return ctxt; +} - RETURN(rc); +static void llog_ctxt_destroy(struct llog_ctxt *ctxt) +{ + if (ctxt->loc_exp) { + class_export_put(ctxt->loc_exp); + ctxt->loc_exp = NULL; + } + if (ctxt->loc_imp) { + class_import_put(ctxt->loc_imp); + ctxt->loc_imp = NULL; + } + LASSERT(ctxt->loc_llcd == NULL); + OBD_FREE_PTR(ctxt); } -EXPORT_SYMBOL(llog_setup); -int llog_cleanup(struct llog_ctxt *ctxt) +int __llog_ctxt_put(struct llog_ctxt *ctxt) { + struct obd_llog_group *olg = ctxt->loc_olg; + struct obd_device *obd; int rc = 0; - ENTRY; - down(&ctxt->loc_sem); - LASSERT(ctxt); + cfs_spin_lock(&olg->olg_lock); + if (!cfs_atomic_dec_and_test(&ctxt->loc_refcount)) { + cfs_spin_unlock(&olg->olg_lock); + return rc; + } + olg->olg_ctxts[ctxt->loc_idx] = NULL; + cfs_spin_unlock(&olg->olg_lock); + + if (ctxt->loc_lcm) + lcm_put(ctxt->loc_lcm); + + obd = ctxt->loc_obd; + cfs_spin_lock(&obd->obd_dev_lock); + /* sync with llog ctxt user thread */ + cfs_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)(ctxt); + rc = CTXTP(ctxt, cleanup)(NULL, ctxt); + + llog_ctxt_destroy(ctxt); + cfs_waitq_signal(&olg->olg_waitq); + return rc; +} +EXPORT_SYMBOL(__llog_ctxt_put); + +int llog_cleanup(struct llog_ctxt *ctxt) +{ + struct l_wait_info lwi = LWI_INTR(LWI_ON_SIGNAL_NOOP, NULL); + struct obd_llog_group *olg; + int rc, idx; + ENTRY; + + LASSERT(ctxt != NULL); + LASSERT(ctxt != LP_POISON); + + olg = ctxt->loc_olg; + LASSERT(olg != NULL); + LASSERT(olg != LP_POISON); + + idx = ctxt->loc_idx; + + /* + * Banlance the ctxt get when calling llog_cleanup() + */ + LASSERT(cfs_atomic_read(&ctxt->loc_refcount) < LI_POISON); + LASSERT(cfs_atomic_read(&ctxt->loc_refcount) > 1); + llog_ctxt_put(ctxt); + + /* + * Try to free the ctxt. + */ + rc = __llog_ctxt_put(ctxt); + if (rc) + CERROR("Error %d while cleaning up ctxt %p\n", + rc, ctxt); - ctxt->loc_obd->obd_llog_ctxt[ctxt->loc_idx] = NULL; - class_export_put(ctxt->loc_exp); - ctxt->loc_exp = NULL; - up(&ctxt->loc_sem); - OBD_FREE(ctxt, sizeof(*ctxt)); + l_wait_event(olg->olg_waitq, + llog_group_ctxt_null(olg, idx), &lwi); RETURN(rc); } EXPORT_SYMBOL(llog_cleanup); -int llog_sync(struct llog_ctxt *ctxt, struct obd_export *exp) +int llog_setup_named(struct obd_device *obd, struct obd_llog_group *olg, + int index, struct obd_device *disk_obd, int count, + struct llog_logid *logid, const char *logname, + struct llog_operations *op) { + struct llog_ctxt *ctxt; int rc = 0; ENTRY; + if (index < 0 || index >= LLOG_MAX_CTXTS) + RETURN(-EINVAL); + + LASSERT(olg != NULL); + + ctxt = llog_new_ctxt(obd); if (!ctxt) - RETURN(0); - down(&ctxt->loc_sem); - if (ctxt->loc_llcd && CTXTP(ctxt, sync)) - rc = CTXTP(ctxt, sync)(ctxt, exp); - else - up(&ctxt->loc_sem); + RETURN(-ENOMEM); + + ctxt->loc_obd = obd; + ctxt->loc_olg = olg; + ctxt->loc_idx = index; + ctxt->loc_logops = op; + cfs_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 (OBD_FAIL_CHECK(OBD_FAIL_OBD_LLOG_SETUP)) { + rc = -ENOTSUPP; + } else { + if (op->lop_setup) + rc = op->lop_setup(NULL, obd, olg, index, disk_obd, + count, logid, logname); + } + + if (rc) { + CERROR("obd %s ctxt %d lop_setup=%p failed %d\n", + obd->obd_name, index, op->lop_setup, rc); + llog_ctxt_put(ctxt); + } else { + CDEBUG(D_CONFIG, "obd %s ctxt %d is initialized\n", + obd->obd_name, index); + ctxt->loc_flags &= ~LLOG_CTXT_FLAG_UNINITIALIZED; + } RETURN(rc); } -EXPORT_SYMBOL(llog_sync); +EXPORT_SYMBOL(llog_setup_named); -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_setup(struct obd_device *obd, struct obd_llog_group *olg, + int index, struct obd_device *disk_obd, int count, + struct llog_logid *logid, struct llog_operations *op) { - int rc; + return llog_setup_named(obd,olg,index,disk_obd,count,logid,NULL,op); +} +EXPORT_SYMBOL(llog_setup); + +int llog_sync(struct llog_ctxt *ctxt, struct obd_export *exp, int flags) +{ + int rc = 0; ENTRY; - LASSERT(ctxt); - down(&ctxt->loc_sem); - CTXT_CHECK_OP(ctxt, add, -EOPNOTSUPP); + if (!ctxt) + RETURN(0); + + if (CTXTP(ctxt, sync)) + rc = CTXTP(ctxt, sync)(ctxt, exp, flags); - rc = CTXTP(ctxt, add)(ctxt, rec, lsm, logcookies, numcookies); - up(&ctxt->loc_sem); RETURN(rc); } -EXPORT_SYMBOL(llog_add); +EXPORT_SYMBOL(llog_sync); -int llog_cancel(struct llog_ctxt *ctxt, struct lov_stripe_md *lsm, - int count, struct llog_cookie *cookies, int flags) +int llog_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) { - int rc; + int raised, rc; ENTRY; - LASSERT(ctxt); - CTXT_CHECK_OP(ctxt, cancel, -EOPNOTSUPP); - rc = CTXTP(ctxt, cancel)(ctxt, lsm, count, cookies, flags); + if (!ctxt) { + CERROR("No ctxt\n"); + RETURN(-ENODEV); + } + + if (ctxt->loc_flags & LLOG_CTXT_FLAG_UNINITIALIZED) + RETURN(-ENXIO); + + + CTXT_CHECK_OP(ctxt, add, -EOPNOTSUPP); + raised = cfs_cap_raised(CFS_CAP_SYS_RESOURCE); + if (!raised) + cfs_cap_raise(CFS_CAP_SYS_RESOURCE); + rc = CTXTP(ctxt, add)(env, ctxt, rec, lsm, logcookies, + numcookies); + if (!raised) + cfs_cap_lower(CFS_CAP_SYS_RESOURCE); RETURN(rc); } -EXPORT_SYMBOL(llog_cancel); +EXPORT_SYMBOL(llog_add); -/* 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) +int llog_cancel(const struct lu_env *env, struct llog_ctxt *ctxt, + struct lov_stripe_md *lsm, int count, + struct llog_cookie *cookies, int flags) { - struct llog_logid_rec *lir = (struct llog_logid_rec *)rec; - struct llog_handle *loghandle; - struct llog_log_hdr *llh; - int rc, index; + int rc; ENTRY; - if (le32_to_cpu(rec->lrh_type) != LLOG_LOGID_MAGIC) { - CERROR("invalid record in catalog\n"); - RETURN(-EINVAL); - } - CWARN("processing log "LPX64":%x at index %u of catalog "LPX64"\n", - lir->lid_id.lgl_oid, lir->lid_id.lgl_ogen, - le32_to_cpu(rec->lrh_index), cathandle->lgh_id.lgl_oid); - - 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); - } - - llh = loghandle->lgh_hdr; - if ((le32_to_cpu(llh->llh_flags) & LLOG_F_ZAP_WHEN_EMPTY) && - (le32_to_cpu(llh->llh_count) == 1)) { - rc = llog_destroy(loghandle); - if (rc) - CERROR("failure destroying log during postsetup: %d\n", rc); - LASSERT(rc == 0); - - index = loghandle->u.phd.phd_cookie.lgc_index; - if (cathandle->u.chd.chd_current_log == loghandle) - cathandle->u.chd.chd_current_log = NULL; - llog_free_handle(loghandle); - - LASSERT(index); - rc = llog_cancel_rec(cathandle, index); - if (rc == 0) - CWARN("cancel log "LPX64":%x at index %u of catalog "LPX64"\n", - lir->lid_id.lgl_oid, lir->lid_id.lgl_ogen, - le32_to_cpu(rec->lrh_index), cathandle->lgh_id.lgl_oid); + if (!ctxt) { + CERROR("No ctxt\n"); + RETURN(-ENODEV); } + CTXT_CHECK_OP(ctxt, cancel, -EOPNOTSUPP); + rc = CTXTP(ctxt, cancel)(env, ctxt, lsm, count, cookies, flags); RETURN(rc); } +EXPORT_SYMBOL(llog_cancel); /* lop_setup method for filter/osc */ // XXX how to set exports -int llog_obd_origin_setup(struct obd_device *obd, int index, struct obd_device *disk_obd, - int count, struct llog_logid *logid) +int llog_obd_origin_setup(const struct lu_env *env, struct obd_device *obd, + struct obd_llog_group *olg, int index, + struct obd_device *disk_obd, int count, + struct llog_logid *logid, const char *name) { struct llog_ctxt *ctxt; struct llog_handle *handle; - struct obd_run_ctxt saved; + struct lvfs_run_ctxt saved; int rc; ENTRY; @@ -187,88 +309,57 @@ int llog_obd_origin_setup(struct obd_device *obd, int index, struct obd_device * RETURN(0); LASSERT(count == 1); - - ctxt = llog_get_context(obd, index); - LASSERT(ctxt); - log_gen_init(ctxt); - - down(&ctxt->loc_sem); - if (logid->lgl_oid) - rc = llog_create(ctxt, &handle, logid, NULL); - else { - rc = llog_create(ctxt, &handle, NULL, NULL); - if (!rc) + + LASSERT(olg != NULL); + ctxt = llog_group_get_ctxt(olg, index); + if (!ctxt) + RETURN(-ENODEV); + + if (logid && logid->lgl_oid) { + rc = llog_open(env, ctxt, &handle, logid, NULL, + LLOG_OPEN_EXISTS); + } else { + rc = llog_open_create(env, ctxt, &handle, NULL, (char *)name); + if (!rc && logid) *logid = handle->lgh_id; } - if (rc) + if (rc) GOTO(out, rc); ctxt->loc_handle = handle; - push_ctxt(&saved, &disk_obd->obd_ctxt, NULL); - rc = llog_init_handle(handle, LLOG_F_IS_CAT, NULL); - pop_ctxt(&saved, &disk_obd->obd_ctxt, NULL); + push_ctxt(&saved, &disk_obd->obd_lvfs_ctxt, NULL); + rc = llog_init_handle(env, handle, LLOG_F_IS_CAT, NULL); + pop_ctxt(&saved, &disk_obd->obd_lvfs_ctxt, NULL); if (rc) GOTO(out, rc); - rc = llog_process(handle, (llog_cb_t)cat_cancel_cb, NULL); - if (rc) - CERROR("llog_process with cat_cancel_cb failed: %d\n", rc); - out: - up(&ctxt->loc_sem); - if (ctxt && rc) { - obd->obd_llog_ctxt[index] = NULL; - OBD_FREE(ctxt, sizeof(*ctxt)); - } - RETURN(rc); + rc = llog_process(env, handle, (llog_cb_t)cat_cancel_cb, NULL, NULL); + if (rc) + CERROR("llog_process() with cat_cancel_cb failed: %d\n", rc); + GOTO(out, rc); +out: + llog_ctxt_put(ctxt); + return rc; } EXPORT_SYMBOL(llog_obd_origin_setup); -int llog_obd_origin_cleanup(struct llog_ctxt *ctxt) +int llog_obd_origin_cleanup(const struct lu_env *env, struct llog_ctxt *ctxt) { - struct llog_handle *cathandle, *n, *loghandle; - struct llog_log_hdr *llh; - int rc, index; - ENTRY; - - if (!ctxt) - return 0; + ENTRY; - 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 ((le32_to_cpu(llh->llh_flags) & LLOG_F_ZAP_WHEN_EMPTY) && - (le32_to_cpu(llh->llh_count) == 1)) { - rc = llog_destroy(loghandle); - if (rc) - CERROR("failure destroying log during cleanup: %d\n", - rc); - LASSERT(rc == 0); - - index = loghandle->u.phd.phd_cookie.lgc_index; - if (cathandle->u.chd.chd_current_log == loghandle) - cathandle->u.chd.chd_current_log = NULL; - llog_free_handle(loghandle); - - LASSERT(index); - rc = llog_cancel_rec(cathandle, index); - if (rc == 0) - CWARN("cancel plain log at index %u of catalog "LPX64"\n", - index, cathandle->lgh_id.lgl_oid); - } - } - llog_cat_put(ctxt->loc_handle); - } - return 0; + if (!ctxt) + RETURN(0); + + if (ctxt->loc_handle) + llog_cat_close(env, 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) +int llog_obd_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 llog_handle *cathandle; int rc; @@ -276,60 +367,22 @@ int llog_obd_origin_add(struct llog_ctxt *ctxt, cathandle = ctxt->loc_handle; LASSERT(cathandle != NULL); - rc = llog_cat_add_rec(cathandle, rec, logcookies, NULL); - if (rc != 1) + rc = llog_cat_add_rec(env, cathandle, rec, logcookies, NULL); + if (rc != 0 && rc != 1) CERROR("write one catalog record failed: %d\n", rc); RETURN(rc); } EXPORT_SYMBOL(llog_obd_origin_add); -int llog_cat_initialize(struct obd_device *obd, int count) -{ - struct llog_logid *idarray; - int size = sizeof(*idarray) * count; - char name[32] = "CATLIST"; - int rc; - ENTRY; - - OBD_ALLOC(idarray, size); - if (!idarray) - RETURN(-ENOMEM); - - memset(idarray, 0, size); - - 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, obd, count, idarray); - 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); - } - - out: - OBD_FREE(idarray, size); - RETURN(rc); -} -EXPORT_SYMBOL(llog_cat_initialize); - -int obd_llog_init(struct obd_device *obd, struct obd_device *disk_obd, - int count, struct llog_logid *logid) +int obd_llog_init(struct obd_device *obd, struct obd_llog_group *olg, + struct obd_device *disk_obd, int *index) { int rc; ENTRY; - OBD_CHECK_OP(obd, llog_init, 0); + OBD_CHECK_DT_OP(obd, llog_init, 0); OBD_COUNTER_INCREMENT(obd, llog_init); - rc = OBP(obd, llog_init)(obd, disk_obd, count, logid); + rc = OBP(obd, llog_init)(obd, olg, disk_obd, index); RETURN(rc); } EXPORT_SYMBOL(obd_llog_init); @@ -338,10 +391,29 @@ int obd_llog_finish(struct obd_device *obd, int count) { int rc; ENTRY; - OBD_CHECK_OP(obd, llog_finish, 0); + OBD_CHECK_DT_OP(obd, llog_finish, 0); OBD_COUNTER_INCREMENT(obd, llog_finish); rc = OBP(obd, llog_finish)(obd, count); RETURN(rc); } EXPORT_SYMBOL(obd_llog_finish); + +/* 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); + +int llog_info_init(void) +{ + llog_key_init_generic(&llog_thread_key, NULL); + lu_context_key_register(&llog_thread_key); + return 0; +} + +void llog_info_fini(void) +{ + lu_context_key_degister(&llog_thread_key); +}