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c89f769f24
This commit fixes GTID inconsistency which was injected by mariabackup SST. Donor node now writes new info file: donor_galera_info, which is streamed along the mariabackup donation to the joiner node. The donor_galera_info file contains both GTID and gtid domain_id, and joiner will use these to initialize the GTID state. Commit has new mtr test case: galera_3nodes.galera_gtid_consistency, which exercises potentially harmful mariabackup SST scenarios. The test has also scenario with IST joining. Signed-off-by: Julius Goryavsky <julius.goryavsky@mariadb.com>
119 lines
3.6 KiB
C++
119 lines
3.6 KiB
C++
/******************************************************
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Percona XtraBackup: hot backup tool for InnoDB
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(c) 2009-2014 Percona LLC and/or its affiliates
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Originally Created 3/3/2009 Yasufumi Kinoshita
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Written by Alexey Kopytov, Aleksandr Kuzminsky, Stewart Smith, Vadim Tkachenko,
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Yasufumi Kinoshita, Ignacio Nin and Baron Schwartz.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335 USA
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*******************************************************
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This file incorporates work covered by the following copyright and
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permission notice:
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Copyright 2010 Codership Oy <http://www.codership.com>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335 USA
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*******************************************************/
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#include <my_global.h>
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#include <my_base.h>
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#include <handler.h>
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#include <trx0rseg.h>
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#include <mysql/service_wsrep.h>
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#include "common.h"
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#ifdef WITH_WSREP
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#include <wsrep_api.h>
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/*! Name of file where Galera info is stored on recovery */
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#define XB_GALERA_INFO_FILENAME "xtrabackup_galera_info"
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#define XB_GALERA_DONOR_INFO_FILENAME "donor_galera_info"
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/***********************************************************************
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Store Galera checkpoint info in the 'xtrabackup_galera_info' file, if that
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information is present in the trx system header. Otherwise, do nothing. */
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void
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xb_write_galera_info(bool incremental_prepare)
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/*==================*/
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{
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FILE* fp;
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XID xid;
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char uuid_str[40];
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long long seqno;
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MY_STAT statinfo;
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/* Do not overwrite an existing file to be compatible with
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servers with older server versions */
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if (!incremental_prepare &&
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my_stat(XB_GALERA_INFO_FILENAME, &statinfo, MYF(0)) != NULL) {
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return;
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}
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xid.null();
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if (!trx_rseg_read_wsrep_checkpoint(xid)) {
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return;
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}
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wsrep_uuid_t uuid;
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memcpy(uuid.data, wsrep_xid_uuid(&xid), sizeof(uuid.data));
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if (wsrep_uuid_print(&uuid, uuid_str,
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sizeof(uuid_str)) < 0) {
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return;
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}
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fp = fopen(XB_GALERA_INFO_FILENAME, "w");
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if (fp == NULL) {
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die(
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"could not create " XB_GALERA_INFO_FILENAME
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", errno = %d\n",
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errno);
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exit(EXIT_FAILURE);
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}
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seqno = wsrep_xid_seqno(&xid);
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msg("mariabackup: Recovered WSREP position: %s:%lld domain_id: %lld\n",
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uuid_str, (long long) seqno, (long long)wsrep_get_domain_id());
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if (fprintf(fp, "%s:%lld %lld", uuid_str, (long long) seqno,
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(long long)wsrep_get_domain_id()) < 0) {
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die(
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"could not write to " XB_GALERA_INFO_FILENAME
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", errno = %d\n",
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errno);;
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}
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fclose(fp);
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}
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#endif
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