|
FULL=`ls -t $FULLBACKUP_DIR |head -1`
FULLBACKUP=$FULLBACKUP_DIR/$FULL
if [ ! -d $FULLBACKUP ]; then
error "全备:$FULLBACKUP不存在."
fi
INCR=`ls -t $INCRBACKUP_DIR/$FULL/ | head -1`
echo "还原将从全备$FULL开始,到增量$INCR结束."
echo
echo "Prepare:完整备份集..........."
echo "*****************************"
$INNOBACKUPEX_PATH --defaults-file=$MY_CNF --apply-log --redo-only --use-memory=$MEMORY $FULLBACKUP > $TMP_LOG 2>&1
check_innobackupex_fail
# Prepare增量备份集,即将增量备份应用到全备目录中,按照增量备份顺序即按照时间从旧到最新
for i in `find $PARENT_DIR/$FULL -mindepth 1 -maxdepth 1 -type d -printf "%P\n" | sort -n `;
do
#判断最新全备的lsn
#check_full_file=`find $FULLBACKUP/ -mindepth 1 -maxdepth 1 -type d -printf "%P\n" | sort -nr | head -1`
check_full_lastlsn=$FULLBACKUP/xtrabackup_checkpoints
fetch_full_lastlsn=`grep -i "^last_lsn" ${check_full_lastlsn} |cut -d = -f 2`
######判断增量备份中第一个增量备份的LSN
check_incre_file=`find $PARENT_DIR/$FULL -mindepth 1 -maxdepth 1 -type d -printf "%P\n" | sort -n | head -1`
check_incre_lastlsn=$PARENT_DIR/$FULL/$i/xtrabackup_checkpoints
fetch_incre_lastlsn=`grep -i "^last_lsn" ${check_incre_lastlsn} |cut -d = -f 2`
echo "完全备份的LSN:${fetch_full_lastlsn} "
echo "增量备份的LSN:${fetch_incre_lastlsn} "
if [ "${fetch_incre_lastlsn}" -eq "${fetch_full_lastlsn}" ];then
echo "*****************************************"
echo "LSN不需要prepare!"
echo "*****************************************"
echo
break
else
echo "Prepare:增量备份集$i........"
echo "*****************************"
$INNOBACKUPEX_PATH --defaults-file=$MY_CNF --apply-log --redo-only --use-memory=$MEMORY $FULLBACKUP --incremental-dir=$PARENT_DIR/$FULL/$i > $TMP_LOG 2>&1
check_innobackupex_fail
if [ $INCR = $i ]; then
break
fi
fi
######判断LSN
done
else
error "未知的备份类型"
fi
fi
echo "prepare:全备集回滚那些未提交的事务..........."
$INNOBACKUPEX_PATH --defaults-file=$MY_CNF --apply-log --use-memory=$MEMORY $FULLBACKUP > $TMP_LOG 2>&1
check_innobackupex_fail
echo "*****************************"
echo "数据库还原中 ...请稍等"
echo "*****************************"
$INNOBACKUPEX_PATH --defaults-file=$MY_CNF --copy-back $FULLBACKUP > $TMP_LOG 2>&1
check_innobackupex_fail
rm -f $TMP_LOG
echo "1.恭喜,还原成功!."
echo "*****************************"
#修改目录权限
echo "修改mysql目录的权限."
mysqlcnf="/usr/local/mysql/my.cnf"
mysqldatadir=`grep -i "^basedir" $mysqlcnf |cut -d = -f 2`
`echo 'chown -R mysql:mysql' ${mysqldatadir}`
echo "2.权限修改成功!"
echo "*****************************"
#自动启动mysql
INIT_NUM=1
if [ ! -x $MYSQLD_SAFE ]; then
echo "mysql安装时启动文件未安装到$MYSQLD_SAFE或无执行权限"
exit 1 #0是执行成功,1是执行不成功
else
echo "启动本机mysql端口为:$MYSQL_PORT的服务"
$MYSQLD_SAFE --defaults-file=$MY_CNF > /dev/null &
while [ $INIT_NUM -le 6 ]
do
PORTNUM=`netstat -lnt|grep ${MYSQL_PORT}|wc -l`
echo "mysql启动中....请稍等..."
sleep 5
if [ $PORTNUM = 1 ];
then
echo "mysql ****启动成功****"
exit 0
fi
INIT_NUM=$(($INIT_NUM +1))
done
echo -e "mysql启动失败或启动时间过长,请检查错误日志 `echo 'cat ' ${ERRORLOG}`"
echo "***************** |