DRBD8 에서 primary/primary 설정하기 (소스컴파일)

이내용은 DRBD-8.0.1 컴파일 버젼이다 (bye 이재원)

RPM 패키지를 이용하여 간단히 구성할시는 202번 글을 참조하라

필자가 8점대를 컴파일한 이유는 (primary/primary)구성을 위해서다 이구성이 필요없으면 간단히 RPM으로 설치하기바란다

1. 커널의 버젼을 맞춰준다.. (2.6.9-42.0.2.EL)

2. 현 커널과 같은 버젼의 srpm 커널 소스를 받아 설치한다

# rpm –ivh kernel-2.6.9-42.0.2.EL.src.rpm

# cd /usr/src/redhat/SPECS

# rpmbuild –bp ––target=i686 kernel-2.6.spec

# ln –s /usr/src/redhat/BUILD/kernel-2.6.9/linux-2.6.9 /usr/src/linux

3. 커널 컨피그 정보를 복사해온다..

# cp /boot/kernel-xxx.config /usr/src/linux/.config

# make -s oldconfig_nonint ; make -s oldconfig_nonint (안되면 무시)

# vi /usr/src/linux/Makefile 을열어서 EXTRAVERSION 부분을 현커널버젼과 동일하게 한다

  ex) EXTRAVERSION -42.0.2.EL

# make /usr/src/linux/include/linux/version.h

# make modules_prepare

4. DRBD 소스버젼을 /usr/src 디렉토리에 풀어놓는다

# tar xvfz drbd-0.8.1.tar.gz -C /usr/src ; cd /usr/src/drbd-0.8.1

# make clean all

# /lib/modules/`uname -r`/build <–체크

# cd /usr/src/drbd-0.8.1

# make tools

# make install (인스톨시작)

# make install-tools

5. 각 노드에서 drbd 모듈 로딩

# modprobe drbd

# lsmod | grep drbd

6. /etc/drbd.conf 파일설정 (각노드에 복사해놓는다)

——————————————————————

#

# please have a a look at the example configuration file in

# /usr/share/doc/drbd.conf

#

resource export {

  protocol C;

  startup {

    wfc-timeout         0;  ## Infinite!

    degr-wfc-timeout   60;  ## 2 minutes.

  }

  disk {

    on-io-error detach;

  }

  net {

    # timeout           60;

    # connect-int       10;

    # ping-int          10;

    # max-buffers     2048;

    # max-epoch-size  2048;

    allow-two-primaries;

  }

  syncer {

    rate   60M;

#   group   0;

    al-extents 257;

  }

  on dr1.epersnet.com {

    device      /dev/drbd5;

    disk        /dev/sdb1;

    address     10.10.10.1:7789;

    meta-disk   internal;

  }

  on dr2.epersnet.com {

    device     /dev/drbd5;

    disk       /dev/sdb1;

    address    10.10.10.2:7789;

    meta-disk  internal;

  }

}

—————————————————————-

%% 만약 리소스가 2개이상이라면 반드시 포트번호를 다르게 지정할것

[node1]

# drbdadm -d adjust export

# drbdadm create-md export <– export는 리소스이름

yes 입력

# drbdadm adjust export

[node2]

# drbdadm adjust export

[node1]

# /etc/init.d/drbd start

# drbdsetup /dev/drbd0 primary -o

[node2]

# /etc/init.d/drbd start

# drbdsetup /dev/drbd0 primary -o

cat [node1] /proc/drbd (상태확인)

Connected st:Primary/Primary ds:UpToDate/UpToDate C r—

cat [node2] /proc/drbd (상태확인)

Connected st:Primary/Primary ds:UpToDate/UpToDate C r—

만약 아래와 같은 에러가 발생한다면 아래부분을 참조하여 해결할것

State change failed: (-2) Refusing to be Primary without at least one UpToDate disk

================== [ if error acct ] ======================

drbd642:~# /etc/init.d/drbd stop

Stopping all DRBD resources.

drbd642:~# drbdadm create-md export

Valid meta-data already in place, recreate new?

[need to type ‘yes’ to confirm] yes

Creating meta data…

initialising activity log

initialising bitmap (208844 KB)

100%

New drbd meta data block sucessfully created.

drbd642:~# /etc/init.d/drbd start

Starting DRBD resources:    [ d0 s0 n0 ].

drbd642:~# drbdsetup /dev/drbd0 primary -o

drbd642:~# cat /proc/drbd

version: 8.0pre5 (api:84/proto:83)

SVN Revision: 2481M build by root@drbd64, 2006-11-01 16:42:55

0: cs:Connected st:Primary/Secondary ds:UpToDate/Diskless r—

ns:0 nr:0 dw:0 dr:0 al:0 bm:0 lo:0 pe:0 ua:0 ap:0

resync: used:0/31 hits:0 misses:0 starving:0 dirty:0 changed:0

act_log: used:0/127 hits:0 misses:0 starving:0 dirty:0 changed:0

===================================================================