ＩＴ技術発信ブログ

I tried the OCFS2 + DRBD8 on CentOS 5.3. I’ve written the document below.
Please give me advice/suggestions on it. I would appreciate any kind of advice/suggestion!

= OCFS2

download rpm pacakge from ocfs2 site.

> yum -y install vte
> rpm -ivh ocfs2-tools-1.4.2-1.el5.x86_64.rpm
> rpm -ivh ocfs2console-1.4.2-1.el5.x86_64.rpm
> rpm -ivh ocfs2-2.6.18-128.2.1.el5-1.4.2-1.el5.x86_64.rpm


> vi /etc/sysconfig/o2cb
O2CB_ENABLED=true

> vi /etc/ocfs2/cluster.conf

node:
ip_port = 7777
ip_address = 10.0.0.74
number = 0
name = ocfs21
cluster = ocfs2

node:
ip_port = 7777
ip_address = 10.0.0.75
number = 1
name = ocfs22
cluster = ocfs2

cluster:
node_count = 2
name = ocfs2


== DRBD8
> yum -y install drbd82 kmod-drbd82

> vim /etc/drbd.conf

global {
usage-count yes;
}

common {
syncer {
rate 100M;
al-extents 257;
}
}

resource r0 {

protocol C;

startup {
become-primary-on both; ### For Primary/Primary ###
degr-wfc-timeout 60;
wfc-timeout 30;
}

disk {
on-io-error detach;
}

net {
allow-two-primaries; ### For Primary/Primary ###
cram-hmac-alg sha1;
shared-secret "FooFunFactory";
after-sb-0pri discard-zero-changes;
after-sb-1pri violently-as0p;
after-sb-2pri violently-as0p;
}

on ocfs21 {
device /dev/drbd0;
disk /dev/sdc;
address 10.0.0.81:7788;
meta-disk /dev/sdb[0];
}

on ocfs22 {
device /dev/drbd0;
disk /dev/sdc;
address 10.0.0.82:7788;
meta-disk /dev/sdb[0];
}
}



=Create Metadata

> dd if=/dev/zero of=/dev/sda3 bs=1M count=1024
> drbdadm create-md r0
> /etc/init.d/drbd stop
> /etc/init.d/drbd start


=Make them Primary/Primary

> drbdsetup /dev/drbd0 primary -o
> cat /proc/drbd
version: 8.3.0 (api:88/proto:86-89)
GIT-hash: 9ba8b93e24d842f0dd3fb1f9b90e8348ddb95829 build by ivoks@ubuntu, 2009-01-17 07:49:56
0: cs:Connected ro:Primary/Primary ds:UpToDate/Diskless C r---
ns:0 nr:0 dw:0 dr:0 al:0 bm:0 lo:0 pe:0 ua:0 ap:0 ep:1 wo:b oos:4883760


> mkfs.ocfs2 /dev/drbd0

> /etc/init.d/o2cb start

> mount -t ocfs2 /dev/drbd0 /data

ラベル: Cluster