X-Git-Url: https://git.whamcloud.com/?p=fs%2Flustre-release.git;a=blobdiff_plain;f=lustre%2Fobdclass%2Fllog_cat.c;h=54e911f17293f65d71559e75882ee36d741c78bd;hp=d4fa3702acb385bcc8c7f1b7b471efb3202090c9;hb=6fb209991e80cf71d97ad566d1a757e4a31466e0;hpb=090c677210ee2946d99c71412e4ff762bb300f4f diff --git a/lustre/obdclass/llog_cat.c b/lustre/obdclass/llog_cat.c index d4fa370..54e911f 100644 --- a/lustre/obdclass/llog_cat.c +++ b/lustre/obdclass/llog_cat.c @@ -1,46 +1,56 @@ -/* -*- 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. + */ +/* + * 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 */ #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 /* 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. @@ -56,7 +66,7 @@ static struct llog_handle *llog_cat_new_log(struct llog_handle *cathandle) ENTRY; llh = cathandle->lgh_hdr; - bitmap_size = sizeof(llh->llh_bitmap) * 8; + bitmap_size = LLOG_BITMAP_SIZE(llh); index = (cathandle->lgh_last_idx + 1) % bitmap_size; @@ -64,19 +74,11 @@ static struct llog_handle *llog_cat_new_log(struct llog_handle *cathandle) if (llh->llh_cat_idx == index) { CERROR("no free catalog slots for log...\n"); RETURN(ERR_PTR(-ENOSPC)); - } else { - if (index == 0) - index = 1; - if (ext2_set_bit(index, llh->llh_bitmap)) { - CERROR("argh, index %u already set in log bitmap?\n", - index); - LBUG(); /* should never happen */ - } - cathandle->lgh_last_idx = index; - llh->llh_count++; - llh->llh_tail.lrt_index = index; } + if (OBD_FAIL_CHECK(OBD_FAIL_MDS_LLOG_CREATE_FAILED)) + RETURN(ERR_PTR(-ENOSPC)); + rc = llog_create(cathandle->lgh_ctxt, &loghandle, NULL, NULL); if (rc) RETURN(ERR_PTR(rc)); @@ -87,7 +89,23 @@ static struct llog_handle *llog_cat_new_log(struct llog_handle *cathandle) if (rc) GOTO(out_destroy, rc); - CDEBUG(D_HA, "new recovery log "LPX64":%x for index %u of catalog " + if (index == 0) + index = 1; + + cfs_spin_lock(&loghandle->lgh_hdr_lock); + llh->llh_count++; + if (ext2_set_bit(index, llh->llh_bitmap)) { + CERROR("argh, index %u already set in log bitmap?\n", + index); + cfs_spin_unlock(&loghandle->lgh_hdr_lock); + LBUG(); /* should never happen */ + } + cfs_spin_unlock(&loghandle->lgh_hdr_lock); + + cathandle->lgh_last_idx = index; + llh->llh_tail.lrt_index = index; + + CDEBUG(D_RPCTRACE,"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 */ @@ -107,16 +125,16 @@ static struct llog_handle *llog_cat_new_log(struct llog_handle *cathandle) loghandle->lgh_hdr->llh_cat_idx = 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); + LASSERT(cfs_list_empty(&loghandle->u.phd.phd_entry)); + cfs_list_add_tail(&loghandle->u.phd.phd_entry, + &cathandle->u.chd.chd_head); - out_destroy: +out_destroy: if (rc < 0) llog_destroy(loghandle); RETURN(loghandle); } -EXPORT_SYMBOL(llog_cat_new_log); /* 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. @@ -134,8 +152,8 @@ int llog_cat_id2handle(struct llog_handle *cathandle, struct llog_handle **res, if (cathandle == NULL) RETURN(-EBADF); - list_for_each_entry(loghandle, &cathandle->u.chd.chd_head, - u.phd.phd_entry) { + cfs_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) { @@ -156,14 +174,14 @@ int llog_cat_id2handle(struct llog_handle *cathandle, struct llog_handle **res, } 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); + cfs_list_add(&loghandle->u.phd.phd_entry, + &cathandle->u.chd.chd_head); } } 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 = + loghandle->u.phd.phd_cookie.lgc_index = loghandle->lgh_hdr->llh_cat_idx; } @@ -178,8 +196,8 @@ int llog_cat_put(struct llog_handle *cathandle) int rc; ENTRY; - list_for_each_entry_safe(loghandle, n, &cathandle->u.chd.chd_head, - u.phd.phd_entry) { + cfs_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"); @@ -189,7 +207,15 @@ int llog_cat_put(struct llog_handle *cathandle) } EXPORT_SYMBOL(llog_cat_put); -/* 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, @@ -205,43 +231,47 @@ static struct llog_handle *llog_cat_current_log(struct llog_handle *cathandle, struct llog_handle *loghandle = NULL; ENTRY; - down_read(&cathandle->lgh_lock); + cfs_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); + cfs_down_write_nested(&loghandle->lgh_lock, LLOGH_LOG); + if (loghandle->lgh_last_idx < LLOG_BITMAP_SIZE(llh) - 1) { + cfs_up_read(&cathandle->lgh_lock); RETURN(loghandle); + } else { + cfs_up_write(&loghandle->lgh_lock); } } if (!create) { if (loghandle) - down_write(&loghandle->lgh_lock); - up_read(&cathandle->lgh_lock); + cfs_down_write(&loghandle->lgh_lock); + cfs_up_read(&cathandle->lgh_lock); RETURN(loghandle); } - up_read(&cathandle->lgh_lock); + cfs_up_read(&cathandle->lgh_lock); /* time to create new log */ /* first, we have to make sure the state hasn't changed */ - down_write(&cathandle->lgh_lock); + cfs_down_write_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_write(&cathandle->lgh_lock); + cfs_down_write_nested(&loghandle->lgh_lock, LLOGH_LOG); + if (loghandle->lgh_last_idx < LLOG_BITMAP_SIZE(llh) - 1) { + cfs_up_write(&cathandle->lgh_lock); RETURN(loghandle); + } else { + cfs_up_write(&loghandle->lgh_lock); } } CDEBUG(D_INODE, "creating new log\n"); loghandle = llog_cat_new_log(cathandle); if (!IS_ERR(loghandle)) - down_write(&loghandle->lgh_lock); - up_write(&cathandle->lgh_lock); + cfs_down_write_nested(&loghandle->lgh_lock, LLOGH_LOG); + cfs_up_write(&cathandle->lgh_lock); RETURN(loghandle); } @@ -263,14 +293,16 @@ int llog_cat_add_rec(struct llog_handle *cathandle, struct llog_rec_hdr *rec, 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); + if (rc < 0) + CERROR("llog_write_rec %d: lh=%p\n", rc, loghandle); + cfs_up_write(&loghandle->lgh_lock); if (rc == -ENOSPC) { /* to create a new plain log */ loghandle = llog_cat_current_log(cathandle, 1); if (IS_ERR(loghandle)) RETURN(PTR_ERR(loghandle)); rc = llog_write_rec(loghandle, rec, reccookie, 1, buf, -1); - up_write(&loghandle->lgh_lock); + cfs_up_write(&loghandle->lgh_lock); } RETURN(rc); @@ -287,12 +319,12 @@ 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) + struct llog_cookie *cookies) { int i, index, rc = 0; ENTRY; - down_write(&cathandle->lgh_lock); + cfs_down_write_nested(&cathandle->lgh_lock, LLOGH_CAT); for (i = 0; i < count; i++, cookies++) { struct llog_handle *loghandle; struct llog_logid *lgl = &cookies->lgc_lgl; @@ -303,9 +335,9 @@ int llog_cat_cancel_records(struct llog_handle *cathandle, int count, break; } - down_write(&loghandle->lgh_lock); + cfs_down_write_nested(&loghandle->lgh_lock, LLOGH_LOG); rc = llog_cancel_rec(loghandle, cookies->lgc_index); - up_write(&loghandle->lgh_lock); + cfs_up_write(&loghandle->lgh_lock); if (rc == 1) { /* log has been destroyed */ index = loghandle->u.phd.phd_cookie.lgc_index; @@ -317,12 +349,12 @@ int llog_cat_cancel_records(struct llog_handle *cathandle, int count, 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", + CDEBUG(D_RPCTRACE,"cancel plain log at index %u" + " of catalog "LPX64"\n", index, cathandle->lgh_id.lgl_oid); } } - up_write(&cathandle->lgh_lock); + cfs_up_write(&cathandle->lgh_lock); RETURN(rc); } @@ -336,12 +368,13 @@ int llog_cat_process_cb(struct llog_handle *cat_llh, struct llog_rec_hdr *rec, struct llog_handle *llh; int rc; + 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, + 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, cat_llh->lgh_id.lgl_oid); rc = llog_cat_id2handle(cat_llh, &llh, &lir->lid_id); @@ -351,14 +384,31 @@ int llog_cat_process_cb(struct llog_handle *cat_llh, struct llog_rec_hdr *rec, RETURN(rc); } - rc = llog_process(llh, d->lpd_cb, d->lpd_data, NULL); + if (rec->lrh_index < d->lpd_startcat) + /* Skip processing of the logs until startcat */ + RETURN(0); + + 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_flags(llh, d->lpd_cb, d->lpd_data, &cd, + d->lpd_flags); + /* Continue processing the next log from idx 0 */ + d->lpd_startidx = 0; + } else { + rc = llog_process_flags(llh, d->lpd_cb, d->lpd_data, NULL, + d->lpd_flags); + } + RETURN(rc); } -int llog_cat_process(struct llog_handle *cat_llh, llog_cb_t cb, void *data) +int llog_cat_process_flags(struct llog_handle *cat_llh, llog_cb_t cb, + void *data, int flags, int startcat, int startidx) { struct llog_process_data d; - struct llog_process_cat_data cd; struct llog_log_hdr *llh = cat_llh->lgh_hdr; int rc; ENTRY; @@ -366,35 +416,165 @@ int llog_cat_process(struct llog_handle *cat_llh, llog_cb_t cb, void *data) LASSERT(llh->llh_flags & LLOG_F_IS_CAT); d.lpd_data = data; d.lpd_cb = cb; + d.lpd_startcat = startcat; + d.lpd_startidx = startidx; + d.lpd_flags = flags; if (llh->llh_cat_idx > cat_llh->lgh_last_idx) { + struct llog_process_cat_data cd; + CWARN("catlog "LPX64" crosses index zero\n", cat_llh->lgh_id.lgl_oid); - cd.first_idx = llh->llh_cat_idx; - cd.last_idx = 0; - rc = llog_process(cat_llh, llog_cat_process_cb, &d, &cd); + cd.lpcd_first_idx = llh->llh_cat_idx; + cd.lpcd_last_idx = 0; + rc = llog_process_flags(cat_llh, llog_cat_process_cb, &d, &cd, + flags); if (rc != 0) RETURN(rc); - cd.first_idx = 0; - cd.last_idx = cat_llh->lgh_last_idx; - rc = llog_process(cat_llh, llog_cat_process_cb, &d, &cd); + cd.lpcd_first_idx = 0; + cd.lpcd_last_idx = cat_llh->lgh_last_idx; + rc = llog_process_flags(cat_llh, llog_cat_process_cb, &d, &cd, + flags); } else { - rc = llog_process(cat_llh, llog_cat_process_cb, &d, NULL); + rc = llog_process_flags(cat_llh, llog_cat_process_cb, &d, NULL, + flags); } RETURN(rc); } +EXPORT_SYMBOL(llog_cat_process_flags); + +int llog_cat_process(struct llog_handle *cat_llh, llog_cb_t cb, void *data, + int startcat, int startidx) +{ + return llog_cat_process_flags(cat_llh, cb, data, 0, startcat, startidx); +} EXPORT_SYMBOL(llog_cat_process); +#ifdef __KERNEL__ +int llog_cat_process_thread(void *data) +{ + struct llog_process_cat_args *args = data; + struct llog_ctxt *ctxt = args->lpca_ctxt; + struct llog_handle *llh = NULL; + llog_cb_t cb = args->lpca_cb; + struct llog_logid logid; + int rc; + ENTRY; + + cfs_daemonize_ctxt("ll_log_process"); + + logid = *(struct llog_logid *)(args->lpca_arg); + rc = llog_create(ctxt, &llh, &logid, NULL); + if (rc) { + CERROR("llog_create() failed %d\n", rc); + GOTO(out, rc); + } + rc = llog_init_handle(llh, LLOG_F_IS_CAT, NULL); + if (rc) { + CERROR("llog_init_handle failed %d\n", rc); + GOTO(release_llh, rc); + } + + if (cb) { + rc = llog_cat_process(llh, cb, NULL, 0, 0); + if (rc != LLOG_PROC_BREAK && rc != 0) + CERROR("llog_cat_process() failed %d\n", rc); + cb(llh, NULL, NULL); + } else { + CWARN("No callback function for recovery\n"); + } + + /* + * Make sure that all cached data is sent. + */ + llog_sync(ctxt, NULL, 0); + GOTO(release_llh, rc); +release_llh: + rc = llog_cat_put(llh); + if (rc) + CERROR("llog_cat_put() failed %d\n", rc); +out: + llog_ctxt_put(ctxt); + OBD_FREE_PTR(args); + return rc; +} +EXPORT_SYMBOL(llog_cat_process_thread); +#endif + +static int llog_cat_reverse_process_cb(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; + 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 "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); + + 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); + } + + rc = llog_reverse_process(llh, d->lpd_cb, d->lpd_data, NULL); + RETURN(rc); +} + +int llog_cat_reverse_process(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; + + 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 "LPX64" crosses index zero\n", + cat_llh->lgh_id.lgl_oid); + + cd.lpcd_first_idx = 0; + cd.lpcd_last_idx = cat_llh->lgh_last_idx; + rc = llog_reverse_process(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(cat_llh, llog_cat_reverse_process_cb, + &d, &cd); + } else { + rc = llog_reverse_process(cat_llh, llog_cat_reverse_process_cb, + &d, NULL); + } + + RETURN(rc); +} +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 = sizeof(llh->llh_bitmap) * 8; + bitmap_size = LLOG_BITMAP_SIZE(llh); if (llh->llh_cat_idx == (index - 1)) { idx = llh->llh_cat_idx + 1; llh->llh_cat_idx = idx; @@ -413,55 +593,9 @@ int llog_cat_set_first_idx(struct llog_handle *cathandle, int index) } } out: - CDEBUG(D_HA, "set catlog "LPX64" first idx %u\n", + CDEBUG(D_RPCTRACE, "set catlog "LPX64" first idx %u\n", cathandle->lgh_id.lgl_oid, llh->llh_cat_idx); } RETURN(0); } - -#if 0 -/* Assumes caller has already pushed us into the kernel context. */ -int llog_cat_init(struct llog_handle *cathandle, struct obd_uuid *tgtuuid) -{ - struct llog_log_hdr *llh; - loff_t offset = 0; - int rc = 0; - ENTRY; - - LASSERT(sizeof(*llh) == LLOG_CHUNK_SIZE); - - down(&cathandle->lgh_lock); - llh = cathandle->lgh_hdr; - - if (cathandle->lgh_file->f_dentry->d_inode->i_size == 0) { - llog_write_rec(cathandle, &llh->llh_hdr, NULL, 0, NULL, 0); - -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; - } 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; - } - - cathandle->lgh_tgtuuid = &llh->llh_tgtuuid; - up(&cathandle->lgh_lock); - RETURN(rc); -} -EXPORT_SYMBOL(llog_cat_init); - -#endif