/* */ ~]# fdisk /dev/sdb

Command (m for help): n
Command action
e extended
p primary partition (1-4)
e
Partition number (1-4): 1
First cylinder (1-130, default 1):
Using default value 1
Last cylinder or +size or +sizeM or +sizeK (1-130, default 130):
Using default value 130

Command (m for help): n
Command action
l logical (5 or over)
p primary partition (1-4)
l
First cylinder (1-130, default 1):
Using default value 1
Last cylinder or +size or +sizeM or +sizeK (1-130, default 130):
Using default value 130

Command (m for help): w
The partition table has been altered!

Calling ioctl() to re-read partition table.
Syncing disks.
載入磁盤信息
partprobe /dev/sdb
cat /proc/partions

安裝和配置DRBD

1。兩臺機器上分別安裝drbd
yum -y install kmod-drbd83 drbd83
檢查是否成功安裝
[[email protected]

global {
	usage-count no;
}
common {
	protocol C;
	startup {
		wfc-timeout 15;  
		degr-wfc-timeout 15;  
		outdated-wfc-timeout 15;  
	}
	disk {
		on-io-error detach;  
		fencing resource-only;  
	}
	net {
		cram-hmac-alg sha1;  
		shared-secret "123456";   
	}
	syncer {
		rate 100M;  
	}
}

resource xserver {   
	meta-disk internal;   
	device /dev/drbd0; #device指定的參數最後必須有一個數字，用於global的minor-count，
	#否則會報錯。device指定drbd應用層設備。 
	on srv5.localdomain{    #註意：drbd配置文件裏。機器名大寫和小寫敏感。
		address 192.168.8.5:7789;   
		disk /dev/sdb5;    
	}   
	on srv6.localdomain {   
		address 192.168.8.6:7789;   
		disk /dev/sdb5;  
	}   
}