[Pacemaker] cannot create gfs2 filesystem : can't open device /dev/drbd1: Read-only file system

[Soni Maula Harriz]

hello all,
i'm a newbie in clustering
i've been following "cluster from scratch" tutorial, edition 5. everything
goes well until drbd section.
but, when i step ahead into "conversion to active/active", i follow
"cluster from scratch" tutorial, edition 3 because i use 2 centos 6.3
servers.
and there is a problem :
when i ran
'mkfs.gfs2 -p lock_dlm -j 2 -t cluster:web /dev/drbd1'
this message appear 'can't open device /dev/drbd1: Read-only file system'

in node 1 :
[root at cluster1 ~]# cat /proc/drbd
version: 8.3.13 (api:88/proto:86-96)
GIT-hash: 83ca112086600faacab2f157bc5a9324f7bd7f77 build by dag at Build64R6,
2012-09-04 12:06:10

 1: cs:StandAlone ro:Secondary/Unknown ds:UpToDate/DUnknown   r-----
    ns:0 nr:0 dw:265816 dr:267548 al:97 bm:0 lo:0 pe:0 ua:0 ap:0 ep:1 wo:b
oos:265484


in node 2 :
[root at cluster2 ~]# cat /proc/drbd
version: 8.3.13 (api:88/proto:86-96)
GIT-hash: 83ca112086600faacab2f157bc5a9324f7bd7f77 build by dag at Build64R6,
2012-09-04 12:06:10

 1: cs:StandAlone ro:Secondary/Unknown ds:UpToDate/DUnknown   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:4

this is the crm status
[root at cluster1 ~]# crm status
============
Last updated: Wed Oct 17 11:32:38 2012
Last change: Wed Oct 17 10:08:21 2012 via crm_resource on cluster1
Stack: cman
Current DC: cluster1 - partition with quorum
Version: 1.1.7-6.el6-148fccfd5985c5590cc601123c6c16e966b85d14
2 Nodes configured, 2 expected votes
5 Resources configured.
============

Online: [ cluster1 cluster2 ]

 ClusterIP    (ocf::heartbeat:IPaddr2):    Started cluster1
 Master/Slave Set: WebDataClone [WebData]
     Masters: [ cluster1 ]
     Slaves: [ cluster2 ]

and, this is the crm configuration
[root at cluster1 dev]# crm configure show
node cluster1 \
    attributes standby="off"
node cluster2 \
    attributes standby="off"
primitive ClusterIP ocf:heartbeat:IPaddr2 \
    params ip="xxx.xxx.xxx.229" cidr_netmask="32" \
    op monitor interval="30s"
primitive WebData ocf:linbit:drbd \
    params drbd_resource="wwwdata" \
    op monitor interval="60s"
primitive WebFS ocf:heartbeat:Filesystem \
    params device="/dev/drbd/by-res/wwwdata" directory="/var/www/html"
fstype="ext4" \
    meta target-role="Stopped"
primitive WebSite ocf:heartbeat:apache \
    params configfile="/etc/httpd/conf/httpd.conf" statusurl="
http://localhost/server-status" \
    op monitor interval="1min"
ms WebDataClone WebData \
    meta master-max="1" master-node-max="1" clone-max="2"
clone-node-max="1" notify="true"
location location-WebSite-cluster1-50 WebSite 50: cluster1
colocation WebSite-with-WebFS inf: WebSite WebFS
colocation colocation-WebSite-ClusterIP-INFINITY inf: WebSite ClusterIP
colocation fs_on_drbd inf: WebFS WebDataClone:Master
order WebFS-after-WebData inf: WebDataClone:promote WebFS:start
order WebSite-after-WebFS inf: WebFS WebSite
order order-ClusterIP-WebSite-mandatory : ClusterIP:start WebSite:start
property $id="cib-bootstrap-options" \
    dc-version="1.1.7-6.el6-148fccfd5985c5590cc601123c6c16e966b85d14" \
    cluster-infrastructure="cman" \
    expected-quorum-votes="2" \
    stonith-enabled="false" \
    no-quorum-policy="ignore"
rsc_defaults $id="rsc-options" \
    resource-stickiness="100"
op_defaults $id="op_defaults-options" \
    timeout="240s"

i've been googling, but the solution i found can't resolve mine.
any help would be appreciated

-- 
Best Regards,

Soni Maula Harriz
Database Administrator
PT. Data Aksara Sangkuriang
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