[root@host01 ~]# drbdsetup /dev/drbd0 show   
disk {
	size            	0s _is_default; # bytes
	on-io-error     	pass_on _is_default;
	fencing         	dont-care _is_default;
	max-bio-bvecs   	0 _is_default;
}
net {
	timeout         	60 _is_default; # 1/10 seconds
	max-epoch-size  	2048 _is_default;
	max-buffers     	2048 _is_default;
	unplug-watermark	128 _is_default;
	connect-int     	10 _is_default; # seconds
	ping-int        	10 _is_default; # seconds
	sndbuf-size     	131070 _is_default; # bytes
	ko-count        	0 _is_default;
	after-sb-0pri   	disconnect _is_default;
	after-sb-1pri   	disconnect _is_default;
	after-sb-2pri   	disconnect _is_default;
	rr-conflict     	disconnect _is_default;
	ping-timeout    	5 _is_default; # 1/10 seconds
}
syncer {
	rate            	51200k; # bytes/second
	after           	-1 _is_default;
	al-extents      	127 _is_default;
}
protocol C;
_this_host {
	device			"/dev/drbd0";
	disk			"/dev/sdb1";
	meta-disk		internal;
	address			10.53.2.1:7789;
}
_remote_host {
	address			10.53.2.21:7789;
}