挂载盘
zpool create -f a4TB /dev/mfid1
zfs create -o compression=gzip -o exec=off -o setuid=off a4TB/static_files
zfs create -o compression=off -o exec=on -o setuid=off a4TB/db

建立内存虚盘
mdconfig -a -t malloc -s 99G -o reserve -u 7
newfs -O 02 -g 4096 -h 1000 -n -o time /dev/md7 
mkdir -p /a4TB/db/db_backups
mount -o async /dev/md7 /a4TB/db/db_backups

建立从库目录
mkdir -p /a4TB/db/mysql_backup
mkdir -p /a4TB/db/mysql_backup_temp
cd /usr
ln -s /a4TB/db/db_backups db_backups
ln -s /a4TB/db/mysql_backup  mysql_backup
ln -s /a4TB/db/mysql_backup_temp mysql_backup_temp

修改配置文件
/usr/mysql_backup/dblist
/etc/my.cnf