物理備份：
mysql
SHOW VARIABLES LIKE'datadir';
use hellodb;
SHOW TABLE STATUS;
mysql
FLUSH LOGS WITH READ LOCK;
/q
lvcreate -L 50M -n mysnap -s /dev/myvg/mydata
mysql
UNLOCK TABLES;
/q
mount /dev/myvg/mysnap /mnt
cd /mnt
cd data/
ls
tar -jcf /root/mysql.tar.bz2 hellodb ibdata1 ib_logfile* mysql-bin*
ls
cd
umount /mnt
lvremove --force /dev/myvg/mysnap
service mysqld start
ls /mydata/data
rm -rf /mydata/data/*
cd /usr/local/mysql
chown -R mysql:mysql data/
scripts/ --datadir=/mydata/data --user=mysql
killall mysqld
service mysqld start
service mysqld stop
cd /mydata
cd data
ls
tar xf /root/mysql.tar.bz2 -C ./
ls
service mysqld start
mysql
SHOW DATABASES;
增量備份：
SHOW MASTER STATUS
lvcreate -L 50M -n mysnap -s /dev/myvg/mydata
mysql
UNLOCK TABLES;
tar -jcf /root/mysql.tar.bz2 hellodb ibdata1 ib_logfile* mysql-bin*
mysql
use hellodb;
INSERT INTO t2 values('huhu')
SHOW MASTER STATUS;
mysqlbinlog --start-position 201 mysql-bin.000004 >/root/mysql2.incr.sql
cd
serviece mysqld stop
rm -rf /mydata/data/*
cd /usr/local/mysql
chown -R mysql:mysql data/
scripts/ --datadir=/mydata/data --user=mysql
service mysqld start
serviece mysqld stop
cd /mydata/data/
tar xf /root/mysql.tar.bz2 -C ./
service mysqld start
mysql
use hellodb;
SELECT * FROM t2;
#mysql mysql
use hellodb;
SELECT * FROM t2;
作者“linux”

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