X-Git-Url: https://git.whamcloud.com/?a=blobdiff_plain;ds=inline;f=lustre%2Fobdclass%2Fllog_cat.c;h=6541d7995189f6b7c401e03a2102345cf9cae245;hb=dc910ede715c4f13cde0c64d74e7badaa8dcb07b;hp=4c49a1064d1f6f8205f8c7801287cf489960e1d1;hpb=c5050e412572b00cbe93d8517d2d1f767bebfa92;p=fs%2Flustre-release.git diff --git a/lustre/obdclass/llog_cat.c b/lustre/obdclass/llog_cat.c index 4c49a10..6541d79 100644 --- a/lustre/obdclass/llog_cat.c +++ b/lustre/obdclass/llog_cat.c @@ -1,191 +1,239 @@ -/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*- - * vim:expandtab:shiftwidth=8:tabstop=8: +/* + * GPL HEADER START * - * Copyright (C) 2001-2003 Cluster File Systems, Inc. - * Author: Andreas Dilger + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * - * This file is part of Lustre, http://www.lustre.org. + * 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. * - * Lustre is free 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. + * 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). * - * 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 - * GNU General Public License for more details. + * 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, 2013, Intel Corporation. + */ +/* + * This file is part of Lustre, http://www.lustre.org/ + * Lustre is a trademark of Sun Microsystems, Inc. + * + * lustre/obdclass/llog_cat.c * * OST<->MDS recovery logging infrastructure. * * Invariants in implementation: * - we do not share logs among different OST<->MDS connections, so that * if an OST or MDS fails it need only look at log(s) relevant to itself + * + * Author: Andreas Dilger + * Author: Alexey Zhuravlev + * Author: Mikhail Pershin */ #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 "llog_internal.h" /* Create a new log handle and add it to the open list. * This log handle will be closed when all of the records in it are removed. * * Assumes caller has already pushed us into the kernel context and is locking. */ -static struct llog_handle *llog_cat_new_log(struct llog_handle *cathandle) +static int llog_cat_new_log(const struct lu_env *env, + struct llog_handle *cathandle, + struct llog_handle *loghandle, + struct thandle *th) { - struct llog_handle *loghandle; - struct llog_log_hdr *llh; - struct llog_logid_rec rec; - int rc, index, bitmap_size, i; - ENTRY; - - rc = llog_create(cathandle->lgh_ctxt, &loghandle, NULL, NULL); - if (rc) - RETURN(ERR_PTR(rc)); - - rc = llog_init_handle(loghandle, - LLOG_F_IS_PLAIN | LLOG_F_ZAP_WHEN_EMPTY, - &cathandle->lgh_hdr->llh_tgtuuid); - if (rc) - GOTO(out_destroy, rc); - - /* Find first free entry */ - llh = cathandle->lgh_hdr; - bitmap_size = sizeof(llh->llh_bitmap) * 8; - for (i = 0, index = le32_to_cpu(llh->llh_count); i < bitmap_size; - i++, index++) { - index %= bitmap_size; - if (ext2_set_bit(index, llh->llh_bitmap)) { - /* XXX This should trigger log clean up or similar */ - CERROR("catalog index %d is still in use\n", index); - } else { - cathandle->lgh_last_idx = index; - llh->llh_count = cpu_to_le32(le32_to_cpu(llh->llh_count) + 1); - break; - } - } - if (i == bitmap_size) { - CERROR("no free catalog slots for log...\n"); - GOTO(out_destroy, rc = -ENOSPC); - } - CWARN("new recovery log "LPX64":%x for index %u of catalog "LPX64"\n", - loghandle->lgh_id.lgl_oid, loghandle->lgh_id.lgl_ogen, index, - cathandle->lgh_id.lgl_oid); - /* build the record for this log in the catalog */ - rec.lid_hdr.lrh_len = cpu_to_le32(sizeof(rec)); - rec.lid_hdr.lrh_index = cpu_to_le32(index); - rec.lid_hdr.lrh_type = cpu_to_le32(LLOG_LOGID_MAGIC); - rec.lid_id = loghandle->lgh_id; - rec.lid_tail.lrt_len = cpu_to_le32(sizeof(rec)); - rec.lid_tail.lrt_index = cpu_to_le32(index); - - /* update the catalog: header and record */ - rc = llog_write_rec(cathandle, &rec.lid_hdr, - &loghandle->u.phd.phd_cookie, 1, NULL, index); - if (rc < 0) { - GOTO(out_destroy, rc); - } - - loghandle->lgh_hdr->llh_cat_idx = cpu_to_le32(index); - cathandle->u.chd.chd_current_log = loghandle; - LASSERT(list_empty(&loghandle->u.phd.phd_entry)); - list_add_tail(&loghandle->u.phd.phd_entry, &cathandle->u.chd.chd_head); - - out_destroy: - if (rc < 0) - llog_destroy(loghandle); - - RETURN(loghandle); + struct llog_thread_info *lgi = llog_info(env); + struct llog_logid_rec *rec = &lgi->lgi_logid; + int rc; + + ENTRY; + + if (OBD_FAIL_CHECK(OBD_FAIL_MDS_LLOG_CREATE_FAILED)) + RETURN(-ENOSPC); + + rc = llog_create(env, loghandle, th); + /* if llog is already created, no need to initialize it */ + if (rc == -EEXIST) { + RETURN(0); + } else if (rc != 0) { + CERROR("%s: can't create new plain llog in catalog: rc = %d\n", + loghandle->lgh_ctxt->loc_obd->obd_name, rc); + RETURN(rc); + } + + rc = llog_init_handle(env, loghandle, + LLOG_F_IS_PLAIN | LLOG_F_ZAP_WHEN_EMPTY, + &cathandle->lgh_hdr->llh_tgtuuid); + if (rc) + GOTO(out_destroy, rc); + + /* build the record for this log in the catalog */ + rec->lid_hdr.lrh_len = sizeof(*rec); + rec->lid_hdr.lrh_type = LLOG_LOGID_MAGIC; + rec->lid_id = loghandle->lgh_id; + + /* append the new record into catalog. The new index will be + * assigned to the record and updated in rec header */ + rc = llog_write_rec(env, cathandle, &rec->lid_hdr, + &loghandle->u.phd.phd_cookie, LLOG_NEXT_IDX, th); + if (rc < 0) + GOTO(out_destroy, rc); + + CDEBUG(D_OTHER, "new recovery log "DOSTID":%x for index %u of catalog" + DOSTID"\n", POSTID(&loghandle->lgh_id.lgl_oi), + loghandle->lgh_id.lgl_ogen, rec->lid_hdr.lrh_index, + POSTID(&cathandle->lgh_id.lgl_oi)); + + loghandle->lgh_hdr->llh_cat_idx = rec->lid_hdr.lrh_index; + RETURN(0); +out_destroy: + llog_destroy(env, loghandle); + RETURN(rc); } -EXPORT_SYMBOL(llog_cat_new_log); -/* Assumes caller has already pushed us into the kernel context and is locking. +/* Open an existent log handle and add it to the open list. + * This log handle will be closed when all of the records in it are removed. + * + * Assumes caller has already pushed us into the kernel context and is locking. * We return a lock on the handle to ensure nobody yanks it from us. + * + * This takes extra reference on llog_handle via llog_handle_get() and require + * this reference to be put by caller using llog_handle_put() */ -int llog_cat_id2handle(struct llog_handle *cathandle, struct llog_handle **res, - struct llog_logid *logid) +int llog_cat_id2handle(const struct lu_env *env, struct llog_handle *cathandle, + struct llog_handle **res, struct llog_logid *logid) { - struct llog_handle *loghandle; - int rc = 0; - ENTRY; - - if (cathandle == NULL) - RETURN(-EBADF); - - list_for_each_entry(loghandle, &cathandle->u.chd.chd_head, - u.phd.phd_entry) { - struct llog_logid *cgl = &loghandle->lgh_id; - if (cgl->lgl_oid == logid->lgl_oid) { - if (cgl->lgl_ogen != logid->lgl_ogen) { - CERROR("log "LPX64" generation %x != %x\n", - logid->lgl_oid, cgl->lgl_ogen, - logid->lgl_ogen); - continue; - } - loghandle->u.phd.phd_cat_handle = cathandle; - cathandle->u.chd.chd_current_log = loghandle; - GOTO(out, rc = 0); - } - } - - rc = llog_create(cathandle->lgh_ctxt, &loghandle, logid, NULL); - if (rc) { - CERROR("error opening log id "LPX64":%x: rc %d\n", - logid->lgl_oid, logid->lgl_ogen, rc); - } else { - rc = llog_init_handle(loghandle, LLOG_F_IS_PLAIN, NULL); - if (!rc) { - list_add(&loghandle->u.phd.phd_entry, - &cathandle->u.chd.chd_head); - cathandle->u.chd.chd_current_log = loghandle; - } - } - if (!rc) { - loghandle->u.phd.phd_cat_handle = cathandle; - loghandle->u.phd.phd_cookie.lgc_lgl = cathandle->lgh_id; - loghandle->u.phd.phd_cookie.lgc_index = - le32_to_cpu(loghandle->lgh_hdr->llh_cat_idx); - } - + struct llog_handle *loghandle; + int rc = 0; + + ENTRY; + + if (cathandle == NULL) + RETURN(-EBADF); + + down_write(&cathandle->lgh_lock); + cfs_list_for_each_entry(loghandle, &cathandle->u.chd.chd_head, + u.phd.phd_entry) { + struct llog_logid *cgl = &loghandle->lgh_id; + + if (ostid_id(&cgl->lgl_oi) == ostid_id(&logid->lgl_oi) && + ostid_seq(&cgl->lgl_oi) == ostid_seq(&logid->lgl_oi)) { + if (cgl->lgl_ogen != logid->lgl_ogen) { + CERROR("%s: log "DOSTID" generation %x != %x\n", + loghandle->lgh_ctxt->loc_obd->obd_name, + POSTID(&logid->lgl_oi), cgl->lgl_ogen, + logid->lgl_ogen); + continue; + } + loghandle->u.phd.phd_cat_handle = cathandle; + up_write(&cathandle->lgh_lock); + GOTO(out, rc = 0); + } + } + up_write(&cathandle->lgh_lock); + + rc = llog_open(env, cathandle->lgh_ctxt, &loghandle, logid, NULL, + LLOG_OPEN_EXISTS); + if (rc < 0) { + CERROR("%s: error opening log id "DOSTID":%x: rc = %d\n", + cathandle->lgh_ctxt->loc_obd->obd_name, + POSTID(&logid->lgl_oi), logid->lgl_ogen, rc); + RETURN(rc); + } + + rc = llog_init_handle(env, loghandle, LLOG_F_IS_PLAIN, NULL); + if (rc < 0) { + llog_close(env, loghandle); + loghandle = NULL; + RETURN(rc); + } + + down_write(&cathandle->lgh_lock); + cfs_list_add(&loghandle->u.phd.phd_entry, &cathandle->u.chd.chd_head); + up_write(&cathandle->lgh_lock); + + loghandle->u.phd.phd_cat_handle = cathandle; + loghandle->u.phd.phd_cookie.lgc_lgl = cathandle->lgh_id; + loghandle->u.phd.phd_cookie.lgc_index = + loghandle->lgh_hdr->llh_cat_idx; + EXIT; out: - *res = loghandle; - RETURN(rc); + llog_handle_get(loghandle); + *res = loghandle; + return 0; } -int llog_cat_put(struct llog_handle *cathandle) +int llog_cat_close(const struct lu_env *env, struct llog_handle *cathandle) { - struct llog_handle *loghandle, *n; - int rc; - ENTRY; - - list_for_each_entry_safe(loghandle, n, &cathandle->u.chd.chd_head, - u.phd.phd_entry) { - int err = llog_close(loghandle); - if (err) - CERROR("error closing loghandle\n"); - } - rc = llog_close(cathandle); - RETURN(rc); + struct llog_handle *loghandle, *n; + int rc; + + ENTRY; + + cfs_list_for_each_entry_safe(loghandle, n, &cathandle->u.chd.chd_head, + u.phd.phd_entry) { + struct llog_log_hdr *llh = loghandle->lgh_hdr; + int index; + + /* unlink open-not-created llogs */ + cfs_list_del_init(&loghandle->u.phd.phd_entry); + llh = loghandle->lgh_hdr; + if (loghandle->lgh_obj != NULL && llh != NULL && + (llh->llh_flags & LLOG_F_ZAP_WHEN_EMPTY) && + (llh->llh_count == 1)) { + rc = llog_destroy(env, loghandle); + if (rc) + CERROR("%s: failure destroying log during " + "cleanup: rc = %d\n", + loghandle->lgh_ctxt->loc_obd->obd_name, + rc); + + index = loghandle->u.phd.phd_cookie.lgc_index; + llog_cat_cleanup(env, cathandle, NULL, index); + } + llog_close(env, loghandle); + } + /* if handle was stored in ctxt, remove it too */ + if (cathandle->lgh_ctxt->loc_handle == cathandle) + cathandle->lgh_ctxt->loc_handle = NULL; + rc = llog_close(env, cathandle); + RETURN(rc); } -EXPORT_SYMBOL(llog_cat_put); +EXPORT_SYMBOL(llog_cat_close); -/* Return the currently active log handle. If the current log handle doesn't +/** + * lockdep markers for nested struct llog_handle::lgh_lock locking. + */ +enum { + LLOGH_CAT, + LLOGH_LOG +}; + +/** Return the currently active log handle. If the current log handle doesn't * have enough space left for the current record, start a new one. * * If reclen is 0, we only want to know what the currently active log is, @@ -195,50 +243,57 @@ EXPORT_SYMBOL(llog_cat_put); * * NOTE: loghandle is write-locked upon successful return */ -static struct llog_handle *llog_cat_current_log(struct llog_handle *cathandle, - int create) +static struct llog_handle *llog_cat_current_log(struct llog_handle *cathandle, + struct thandle *th) { struct llog_handle *loghandle = NULL; ENTRY; - down_read(&cathandle->lgh_lock); + down_read_nested(&cathandle->lgh_lock, LLOGH_CAT); loghandle = cathandle->u.chd.chd_current_log; if (loghandle) { - struct llog_log_hdr *llh = loghandle->lgh_hdr; - if (loghandle->lgh_last_idx < (sizeof(llh->llh_bitmap) * 8) - 1) { - down_write(&loghandle->lgh_lock); - up_read(&cathandle->lgh_lock); + struct llog_log_hdr *llh; + + down_write_nested(&loghandle->lgh_lock, LLOGH_LOG); + llh = loghandle->lgh_hdr; + if (llh == NULL || + loghandle->lgh_last_idx < LLOG_BITMAP_SIZE(llh) - 1) { + up_read(&cathandle->lgh_lock); RETURN(loghandle); + } else { + up_write(&loghandle->lgh_lock); } } - if (!create) { - if (loghandle) - down_write(&loghandle->lgh_lock); - up_read(&cathandle->lgh_lock); - RETURN(loghandle); - } - up_read(&cathandle->lgh_lock); + up_read(&cathandle->lgh_lock); - /* time to create new log */ + /* time to use next log */ - /* first, we have to make sure the state hasn't changed */ - down_write(&cathandle->lgh_lock); - loghandle = cathandle->u.chd.chd_current_log; - if (loghandle) { - struct llog_log_hdr *llh = loghandle->lgh_hdr; - if (loghandle->lgh_last_idx < (sizeof(llh->llh_bitmap) * 8) - 1) { - down_write(&loghandle->lgh_lock); - up_write(&cathandle->lgh_lock); + /* first, we have to make sure the state hasn't changed */ + down_write_nested(&cathandle->lgh_lock, LLOGH_CAT); + loghandle = cathandle->u.chd.chd_current_log; + if (loghandle) { + struct llog_log_hdr *llh; + + down_write_nested(&loghandle->lgh_lock, LLOGH_LOG); + llh = loghandle->lgh_hdr; + LASSERT(llh); + if (loghandle->lgh_last_idx < LLOG_BITMAP_SIZE(llh) - 1) { + up_write(&cathandle->lgh_lock); RETURN(loghandle); + } else { + up_write(&loghandle->lgh_lock); } } - CDEBUG(D_INODE, "creating new log\n"); - loghandle = llog_cat_new_log(cathandle); - if (loghandle) - down_write(&loghandle->lgh_lock); - up_write(&cathandle->lgh_lock); - RETURN(loghandle); + CDEBUG(D_INODE, "use next log\n"); + + loghandle = cathandle->u.chd.chd_next_log; + cathandle->u.chd.chd_current_log = loghandle; + cathandle->u.chd.chd_next_log = NULL; + down_write_nested(&loghandle->lgh_lock, LLOGH_LOG); + up_write(&cathandle->lgh_lock); + LASSERT(loghandle); + RETURN(loghandle); } /* Add a single record to the recovery log(s) using a catalog @@ -246,24 +301,163 @@ static struct llog_handle *llog_cat_current_log(struct llog_handle *cathandle, * * Assumes caller has already pushed us into the kernel context. */ -int llog_cat_add_rec(struct llog_handle *cathandle, struct llog_rec_hdr *rec, - struct llog_cookie *reccookie, void *buf) +int llog_cat_add_rec(const struct lu_env *env, struct llog_handle *cathandle, + struct llog_rec_hdr *rec, struct llog_cookie *reccookie, + struct thandle *th) { struct llog_handle *loghandle; int rc; ENTRY; - LASSERT(le32_to_cpu(rec->lrh_len) <= LLOG_CHUNK_SIZE); - loghandle = llog_cat_current_log(cathandle, 1); - if (IS_ERR(loghandle)) - RETURN(PTR_ERR(loghandle)); - /* loghandle is already locked by llog_cat_current_log() for us */ - rc = llog_write_rec(loghandle, rec, reccookie, 1, buf, -1); - up_write(&loghandle->lgh_lock); - RETURN(rc); + LASSERT(rec->lrh_len <= LLOG_CHUNK_SIZE); + loghandle = llog_cat_current_log(cathandle, th); + LASSERT(!IS_ERR(loghandle)); + + /* loghandle is already locked by llog_cat_current_log() for us */ + if (!llog_exist(loghandle)) { + rc = llog_cat_new_log(env, cathandle, loghandle, th); + if (rc < 0) { + up_write(&loghandle->lgh_lock); + RETURN(rc); + } + } + /* now let's try to add the record */ + rc = llog_write_rec(env, loghandle, rec, reccookie, LLOG_NEXT_IDX, th); + if (rc < 0) + CDEBUG_LIMIT(rc == -ENOSPC ? D_HA : D_ERROR, + "llog_write_rec %d: lh=%p\n", rc, loghandle); + up_write(&loghandle->lgh_lock); + if (rc == -ENOSPC) { + /* try to use next log */ + loghandle = llog_cat_current_log(cathandle, th); + LASSERT(!IS_ERR(loghandle)); + /* new llog can be created concurrently */ + if (!llog_exist(loghandle)) { + rc = llog_cat_new_log(env, cathandle, loghandle, th); + if (rc < 0) { + up_write(&loghandle->lgh_lock); + RETURN(rc); + } + } + /* now let's try to add the record */ + rc = llog_write_rec(env, loghandle, rec, reccookie, + LLOG_NEXT_IDX, th); + if (rc < 0) + CERROR("llog_write_rec %d: lh=%p\n", rc, loghandle); + up_write(&loghandle->lgh_lock); + } + + RETURN(rc); } EXPORT_SYMBOL(llog_cat_add_rec); +int llog_cat_declare_add_rec(const struct lu_env *env, + struct llog_handle *cathandle, + struct llog_rec_hdr *rec, struct thandle *th) +{ + struct llog_thread_info *lgi = llog_info(env); + struct llog_logid_rec *lirec = &lgi->lgi_logid; + struct llog_handle *loghandle, *next; + int rc = 0; + + ENTRY; + + if (cathandle->u.chd.chd_current_log == NULL) { + /* declare new plain llog */ + down_write(&cathandle->lgh_lock); + if (cathandle->u.chd.chd_current_log == NULL) { + rc = llog_open(env, cathandle->lgh_ctxt, &loghandle, + NULL, NULL, LLOG_OPEN_NEW); + if (rc == 0) { + cathandle->u.chd.chd_current_log = loghandle; + cfs_list_add_tail(&loghandle->u.phd.phd_entry, + &cathandle->u.chd.chd_head); + } + } + up_write(&cathandle->lgh_lock); + } else if (cathandle->u.chd.chd_next_log == NULL) { + /* declare next plain llog */ + down_write(&cathandle->lgh_lock); + if (cathandle->u.chd.chd_next_log == NULL) { + rc = llog_open(env, cathandle->lgh_ctxt, &loghandle, + NULL, NULL, LLOG_OPEN_NEW); + if (rc == 0) { + cathandle->u.chd.chd_next_log = loghandle; + cfs_list_add_tail(&loghandle->u.phd.phd_entry, + &cathandle->u.chd.chd_head); + } + } + up_write(&cathandle->lgh_lock); + } + if (rc) + GOTO(out, rc); + + lirec->lid_hdr.lrh_len = sizeof(*lirec); + + if (!llog_exist(cathandle->u.chd.chd_current_log)) { + rc = llog_declare_create(env, cathandle->u.chd.chd_current_log, + th); + if (rc) + GOTO(out, rc); + llog_declare_write_rec(env, cathandle, &lirec->lid_hdr, -1, th); + } + /* declare records in the llogs */ + rc = llog_declare_write_rec(env, cathandle->u.chd.chd_current_log, + rec, -1, th); + if (rc) + GOTO(out, rc); + + next = cathandle->u.chd.chd_next_log; + if (next) { + if (!llog_exist(next)) { + rc = llog_declare_create(env, next, th); + llog_declare_write_rec(env, cathandle, &lirec->lid_hdr, + -1, th); + } + /* XXX: we hope for declarations made for existing llog + * this might be not correct with some backends + * where declarations are expected against specific + * object like ZFS with full debugging enabled */ + /*llog_declare_write_rec(env, next, rec, -1, th);*/ + } +out: + RETURN(rc); +} +EXPORT_SYMBOL(llog_cat_declare_add_rec); + +int llog_cat_add(const struct lu_env *env, struct llog_handle *cathandle, + struct llog_rec_hdr *rec, struct llog_cookie *reccookie) +{ + struct llog_ctxt *ctxt; + struct dt_device *dt; + struct thandle *th = NULL; + int rc; + + ctxt = cathandle->lgh_ctxt; + LASSERT(ctxt); + LASSERT(ctxt->loc_exp); + + LASSERT(cathandle->lgh_obj != NULL); + dt = lu2dt_dev(cathandle->lgh_obj->do_lu.lo_dev); + + th = dt_trans_create(env, dt); + if (IS_ERR(th)) + RETURN(PTR_ERR(th)); + + rc = llog_cat_declare_add_rec(env, cathandle, rec, th); + if (rc) + GOTO(out_trans, rc); + + rc = dt_trans_start_local(env, dt, th); + if (rc) + GOTO(out_trans, rc); + rc = llog_cat_add_rec(env, cathandle, rec, reccookie, th); +out_trans: + dt_trans_stop(env, dt, th); + RETURN(rc); +} +EXPORT_SYMBOL(llog_cat_add); + /* For each cookie in the cookie array, we clear the log in-use bit and either: * - the log is empty, so mark it free in the catalog header and delete it * - the log is not empty, just write out the log header @@ -273,124 +467,377 @@ EXPORT_SYMBOL(llog_cat_add_rec); * * Assumes caller has already pushed us into the kernel context. */ -int llog_cat_cancel_records(struct llog_handle *cathandle, int count, - struct llog_cookie *cookies) +int llog_cat_cancel_records(const struct lu_env *env, + struct llog_handle *cathandle, int count, + struct llog_cookie *cookies) { - int i, index, rc = 0; - ENTRY; - - down_write(&cathandle->lgh_lock); - for (i = 0; i < count; i++, cookies++) { - struct llog_handle *loghandle; - struct llog_logid *lgl = &cookies->lgc_lgl; - - rc = llog_cat_id2handle(cathandle, &loghandle, lgl); - if (rc) { - CERROR("Cannot find log "LPX64"\n", lgl->lgl_oid); - break; - } - - down_write(&loghandle->lgh_lock); - rc = llog_cancel_rec(loghandle, cookies->lgc_index); - up_write(&loghandle->lgh_lock); - - if (rc == 1) { /* log has been destroyed */ - 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); - } - } - up_write(&cathandle->lgh_lock); - - RETURN(rc); + int i, index, rc = 0, failed = 0; + + ENTRY; + + for (i = 0; i < count; i++, cookies++) { + struct llog_handle *loghandle; + struct llog_logid *lgl = &cookies->lgc_lgl; + int lrc; + + rc = llog_cat_id2handle(env, cathandle, &loghandle, lgl); + if (rc) { + CERROR("%s: cannot find handle for llog "DOSTID": %d\n", + cathandle->lgh_ctxt->loc_obd->obd_name, + POSTID(&lgl->lgl_oi), rc); + failed++; + continue; + } + + lrc = llog_cancel_rec(env, loghandle, cookies->lgc_index); + if (lrc == LLOG_DEL_PLAIN) { /* log has been destroyed */ + index = loghandle->u.phd.phd_cookie.lgc_index; + rc = llog_cat_cleanup(env, cathandle, loghandle, + index); + } else if (lrc == -ENOENT) { + if (rc == 0) /* ENOENT shouldn't rewrite any error */ + rc = lrc; + } else if (lrc < 0) { + failed++; + rc = lrc; + } + llog_handle_put(loghandle); + } + if (rc) + CERROR("%s: fail to cancel %d of %d llog-records: rc = %d\n", + cathandle->lgh_ctxt->loc_obd->obd_name, failed, count, + rc); + + RETURN(rc); } EXPORT_SYMBOL(llog_cat_cancel_records); -int llog_cat_process_cb(struct llog_handle *cat_llh, struct llog_rec_hdr *rec, void *data) +int llog_cat_process_cb(const struct lu_env *env, struct llog_handle *cat_llh, + struct llog_rec_hdr *rec, void *data) { struct llog_process_data *d = data; struct llog_logid_rec *lir = (struct llog_logid_rec *)rec; struct llog_handle *llh; + struct llog_log_hdr *hdr; int rc; - if (le32_to_cpu(rec->lrh_type) != LLOG_LOGID_MAGIC) { + ENTRY; + if (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), cat_llh->lgh_id.lgl_oid); + CDEBUG(D_HA, "processing log "DOSTID":%x at index %u of catalog " + DOSTID"\n", POSTID(&lir->lid_id.lgl_oi), lir->lid_id.lgl_ogen, + rec->lrh_index, POSTID(&cat_llh->lgh_id.lgl_oi)); + + rc = llog_cat_id2handle(env, cat_llh, &llh, &lir->lid_id); + if (rc) { + CERROR("%s: cannot find handle for llog "DOSTID": %d\n", + cat_llh->lgh_ctxt->loc_obd->obd_name, + POSTID(&lir->lid_id.lgl_oi), rc); + RETURN(rc); + } + + /* clean old empty llogs, do not consider current llog in use */ + hdr = llh->lgh_hdr; + if ((hdr->llh_flags & LLOG_F_ZAP_WHEN_EMPTY) && + hdr->llh_count == 1 && + llh != cat_llh->u.chd.chd_current_log) { + rc = llog_destroy(env, llh); + if (rc) + CERROR("%s: fail to destroy empty log: rc = %d\n", + llh->lgh_ctxt->loc_obd->obd_name, rc); + GOTO(out, rc = LLOG_DEL_PLAIN); + } + + if (rec->lrh_index < d->lpd_startcat) { + /* Skip processing of the logs until startcat */ + rc = 0; + } else if (d->lpd_startidx > 0) { + struct llog_process_cat_data cd; + + cd.lpcd_first_idx = d->lpd_startidx; + cd.lpcd_last_idx = 0; + rc = llog_process_or_fork(env, llh, d->lpd_cb, d->lpd_data, + &cd, false); + /* Continue processing the next log from idx 0 */ + d->lpd_startidx = 0; + } else { + rc = llog_process_or_fork(env, llh, d->lpd_cb, d->lpd_data, + NULL, false); + } - rc = llog_cat_id2handle(cat_llh, &llh, &lir->lid_id); - if (rc) { - CERROR("Cannot find handle for log "LPX64"\n", lir->lid_id.lgl_oid); - RETURN(rc); - } +out: + /* The empty plain log was destroyed while processing */ + if (rc == LLOG_DEL_PLAIN) + rc = llog_cat_cleanup(env, cat_llh, llh, + llh->u.phd.phd_cookie.lgc_index); + llog_handle_put(llh); - rc = llog_process(llh, d->lpd_cb, d->lpd_data); - RETURN(rc); + RETURN(rc); } -int llog_cat_process(struct llog_handle *cat_llh, llog_cb_t cb, void *data) +int llog_cat_process_or_fork(const struct lu_env *env, + struct llog_handle *cat_llh, + llog_cb_t cb, void *data, int startcat, + int startidx, bool fork) { struct llog_process_data d; + struct llog_log_hdr *llh = cat_llh->lgh_hdr; int rc; ENTRY; + + LASSERT(llh->llh_flags & LLOG_F_IS_CAT); d.lpd_data = data; d.lpd_cb = cb; + d.lpd_startcat = startcat; + d.lpd_startidx = startidx; + + if (llh->llh_cat_idx > cat_llh->lgh_last_idx) { + struct llog_process_cat_data cd; + + CWARN("catlog "DOSTID" crosses index zero\n", + POSTID(&cat_llh->lgh_id.lgl_oi)); + + cd.lpcd_first_idx = llh->llh_cat_idx; + cd.lpcd_last_idx = 0; + rc = llog_process_or_fork(env, cat_llh, llog_cat_process_cb, + &d, &cd, fork); + if (rc != 0) + RETURN(rc); + + cd.lpcd_first_idx = 0; + cd.lpcd_last_idx = cat_llh->lgh_last_idx; + rc = llog_process_or_fork(env, cat_llh, llog_cat_process_cb, + &d, &cd, fork); + } else { + rc = llog_process_or_fork(env, cat_llh, llog_cat_process_cb, + &d, NULL, fork); + } - rc = llog_process(cat_llh, llog_cat_process_cb, &d); RETURN(rc); } -EXPORT_SYMBOL(llog_cat_process); +EXPORT_SYMBOL(llog_cat_process_or_fork); +int llog_cat_process(const struct lu_env *env, struct llog_handle *cat_llh, + llog_cb_t cb, void *data, int startcat, int startidx) +{ + return llog_cat_process_or_fork(env, cat_llh, cb, data, startcat, + startidx, false); +} +EXPORT_SYMBOL(llog_cat_process); -#if 0 -/* Assumes caller has already pushed us into the kernel context. */ -int llog_cat_init(struct llog_handle *cathandle, struct obd_uuid *tgtuuid) +static int llog_cat_reverse_process_cb(const struct lu_env *env, + struct llog_handle *cat_llh, + struct llog_rec_hdr *rec, void *data) { - struct llog_log_hdr *llh; - loff_t offset = 0; - int rc = 0; - ENTRY; + struct llog_process_data *d = data; + struct llog_logid_rec *lir = (struct llog_logid_rec *)rec; + struct llog_handle *llh; + struct llog_log_hdr *hdr; + int rc; + + if (le32_to_cpu(rec->lrh_type) != LLOG_LOGID_MAGIC) { + CERROR("invalid record in catalog\n"); + RETURN(-EINVAL); + } + CDEBUG(D_HA, "processing log "DOSTID":%x at index %u of catalog " + DOSTID"\n", POSTID(&lir->lid_id.lgl_oi), lir->lid_id.lgl_ogen, + le32_to_cpu(rec->lrh_index), POSTID(&cat_llh->lgh_id.lgl_oi)); + + rc = llog_cat_id2handle(env, cat_llh, &llh, &lir->lid_id); + if (rc) { + CERROR("%s: cannot find handle for llog "DOSTID": %d\n", + cat_llh->lgh_ctxt->loc_obd->obd_name, + POSTID(&lir->lid_id.lgl_oi), rc); + RETURN(rc); + } + + /* clean old empty llogs, do not consider current llog in use */ + hdr = llh->lgh_hdr; + if ((hdr->llh_flags & LLOG_F_ZAP_WHEN_EMPTY) && + hdr->llh_count == 1 && + llh != cat_llh->u.chd.chd_current_log) { + rc = llog_destroy(env, llh); + if (rc) + CERROR("%s: fail to destroy empty log: rc = %d\n", + llh->lgh_ctxt->loc_obd->obd_name, rc); + GOTO(out, rc = LLOG_DEL_PLAIN); + } + + rc = llog_reverse_process(env, llh, d->lpd_cb, d->lpd_data, NULL); - LASSERT(sizeof(*llh) == LLOG_CHUNK_SIZE); +out: + /* The empty plain was destroyed while processing */ + if (rc == LLOG_DEL_PLAIN) + rc = llog_cat_cleanup(env, cat_llh, llh, + llh->u.phd.phd_cookie.lgc_index); - down(&cathandle->lgh_lock); - llh = cathandle->lgh_hdr; + llog_handle_put(llh); + RETURN(rc); +} - if (cathandle->lgh_file->f_dentry->d_inode->i_size == 0) { - llog_write_rec(cathandle, &llh->llh_hdr, NULL, 0, NULL, 0); +int llog_cat_reverse_process(const struct lu_env *env, + struct llog_handle *cat_llh, + llog_cb_t cb, void *data) +{ + struct llog_process_data d; + struct llog_process_cat_data cd; + struct llog_log_hdr *llh = cat_llh->lgh_hdr; + int rc; + ENTRY; -write_hdr: - rc = lustre_fwrite(cathandle->lgh_file, llh, LLOG_CHUNK_SIZE, - &offset); - if (rc != LLOG_CHUNK_SIZE) { - CERROR("error writing catalog header: rc %d\n", rc); - OBD_FREE(llh, sizeof(*llh)); - if (rc >= 0) - rc = -ENOSPC; - } else - rc = 0; + LASSERT(llh->llh_flags & LLOG_F_IS_CAT); + d.lpd_data = data; + d.lpd_cb = cb; + + if (llh->llh_cat_idx > cat_llh->lgh_last_idx) { + CWARN("catalog "DOSTID" crosses index zero\n", + POSTID(&cat_llh->lgh_id.lgl_oi)); + + cd.lpcd_first_idx = 0; + cd.lpcd_last_idx = cat_llh->lgh_last_idx; + rc = llog_reverse_process(env, cat_llh, + llog_cat_reverse_process_cb, + &d, &cd); + if (rc != 0) + RETURN(rc); + + cd.lpcd_first_idx = le32_to_cpu(llh->llh_cat_idx); + cd.lpcd_last_idx = 0; + rc = llog_reverse_process(env, cat_llh, + llog_cat_reverse_process_cb, + &d, &cd); } else { - rc = lustre_fread(cathandle->lgh_file, llh, LLOG_CHUNK_SIZE, - &offset); - if (rc != LLOG_CHUNK_SIZE) { - CERROR("error reading catalog header: rc %d\n", rc); - /* Can we do much else if the header is bad? */ - goto write_hdr; - } else - rc = 0; + rc = llog_reverse_process(env, cat_llh, + llog_cat_reverse_process_cb, + &d, NULL); } - cathandle->lgh_tgtuuid = &llh->llh_tgtuuid; - up(&cathandle->lgh_lock); RETURN(rc); } -EXPORT_SYMBOL(llog_cat_init); +EXPORT_SYMBOL(llog_cat_reverse_process); + +int llog_cat_set_first_idx(struct llog_handle *cathandle, int index) +{ + struct llog_log_hdr *llh = cathandle->lgh_hdr; + int i, bitmap_size, idx; + ENTRY; + + bitmap_size = LLOG_BITMAP_SIZE(llh); + if (llh->llh_cat_idx == (index - 1)) { + idx = llh->llh_cat_idx + 1; + llh->llh_cat_idx = idx; + if (idx == cathandle->lgh_last_idx) + goto out; + for (i = (index + 1) % bitmap_size; + i != cathandle->lgh_last_idx; + i = (i + 1) % bitmap_size) { + if (!ext2_test_bit(i, llh->llh_bitmap)) { + idx = llh->llh_cat_idx + 1; + llh->llh_cat_idx = idx; + } else if (i == 0) { + llh->llh_cat_idx = 0; + } else { + break; + } + } +out: + CDEBUG(D_RPCTRACE, "set catlog "DOSTID" first idx %u\n", + POSTID(&cathandle->lgh_id.lgl_oi), llh->llh_cat_idx); + } + + RETURN(0); +} + +/* Cleanup deleted plain llog traces from catalog */ +int llog_cat_cleanup(const struct lu_env *env, struct llog_handle *cathandle, + struct llog_handle *loghandle, int index) +{ + int rc; + + LASSERT(index); + if (loghandle != NULL) { + /* remove destroyed llog from catalog list and + * chd_current_log variable */ + down_write(&cathandle->lgh_lock); + if (cathandle->u.chd.chd_current_log == loghandle) + cathandle->u.chd.chd_current_log = NULL; + cfs_list_del_init(&loghandle->u.phd.phd_entry); + up_write(&cathandle->lgh_lock); + LASSERT(index == loghandle->u.phd.phd_cookie.lgc_index); + /* llog was opened and keep in a list, close it now */ + llog_close(env, loghandle); + } + /* remove plain llog entry from catalog by index */ + llog_cat_set_first_idx(cathandle, index); + rc = llog_cancel_rec(env, cathandle, index); + if (rc == 0) + CDEBUG(D_HA, "cancel plain log at index" + " %u of catalog "DOSTID"\n", + index, POSTID(&cathandle->lgh_id.lgl_oi)); + return rc; +} + +int cat_cancel_cb(const struct lu_env *env, 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; + + ENTRY; + + if (rec->lrh_type != LLOG_LOGID_MAGIC) { + CERROR("invalid record in catalog\n"); + RETURN(-EINVAL); + } + + CDEBUG(D_HA, "processing log "DOSTID":%x at index %u of catalog " + DOSTID"\n", POSTID(&lir->lid_id.lgl_oi), lir->lid_id.lgl_ogen, + rec->lrh_index, POSTID(&cathandle->lgh_id.lgl_oi)); + + rc = llog_cat_id2handle(env, cathandle, &loghandle, &lir->lid_id); + if (rc) { + CERROR("%s: cannot find handle for llog "DOSTID": %d\n", + cathandle->lgh_ctxt->loc_obd->obd_name, + POSTID(&lir->lid_id.lgl_oi), rc); + if (rc == -ENOENT || rc == -ESTALE) { + /* remove index from catalog */ + llog_cat_cleanup(env, cathandle, NULL, rec->lrh_index); + } + RETURN(rc); + } + + llh = loghandle->lgh_hdr; + if ((llh->llh_flags & LLOG_F_ZAP_WHEN_EMPTY) && + (llh->llh_count == 1)) { + rc = llog_destroy(env, loghandle); + if (rc) + CERROR("%s: fail to destroy empty log: rc = %d\n", + loghandle->lgh_ctxt->loc_obd->obd_name, rc); + + llog_cat_cleanup(env, cathandle, loghandle, + loghandle->u.phd.phd_cookie.lgc_index); + } + llog_handle_put(loghandle); + + RETURN(rc); +} +EXPORT_SYMBOL(cat_cancel_cb); + +/* helper to initialize catalog llog and process it to cancel */ +int llog_cat_init_and_process(const struct lu_env *env, + struct llog_handle *llh) +{ + int rc; + + rc = llog_init_handle(env, llh, LLOG_F_IS_CAT, NULL); + if (rc) + RETURN(rc); + + RETURN(0); +} +EXPORT_SYMBOL(llog_cat_init_and_process); -#endif