CentOS6 GFS2

■ GFS2 (Global File System 2)

위키백과 : https://en.wikipedia.org/wiki/GFS2#cite_note-3

OS : CentOS6.x

 

 

■ hosts 수정 및 방화벽 off

vi /etc/hosts

192.168.0.4 node1
192.168.0.6 node2

iptables 및 selinux off

 

 

■ cluster conf 수정

vi /etc/cluster/cluster.conf

<?xml version="1.0"?>
<cluster config_version="1" name="cluster">
        <clusternodes>
                <clusternode name="node1" nodeid="1"/>
                <clusternode name="node2" nodeid="2"/>
        </clusternodes>
        <cman expected_votes="1" two_node="1"/>
        <fencedevices/>
        <rm/>
</cluster>

 

 

■ LVM 볼륨 생성

pvcreate /dev/sdb
vgcreate -Ay -cy VoL00 /dev/sdb
lvcreate -L +2G -n test VoL00

 

 

■ 파일시스템 생성

[root@node1 ~]# mkfs.gfs2 -p lock_dlm -t cluster:gfs2 -j 2 /dev/VoL00/test
This will destroy any data on /dev/VoL00/test.
It appears to contain: symbolic link to `../dm-2'

Are you sure you want to proceed? [y/n] y

Device:                    /dev/VoL00/test
Blocksize:                 4096
Device Size                2.00 GB (523264 blocks)
Filesystem Size:           2.00 GB (523264 blocks)
Journals:                  2
Resource Groups:           8
Locking Protocol:          "lock_dlm"
Lock Table:                "cluster:gfs2"
UUID:                      166520af-2f53-741f-78ea-7154edeba9ce

 

 

■ GFS2 파일시스템 마운트 및 테스트

[root@node1 gfs]# mount -t gfs2 /dev/VoL00/test /gfs

[root@node1 gfs]# df -h
Filesystem            Size  Used Avail Use% Mounted on
/dev/mapper/VoL00-test
                      2.0G  259M  1.8G  13% /gfs

 

 

■ Reboot 후 자동 mount 를 위해 fstab수정

vi /etc/fstab

# /etc/fstab
# Created by anaconda on Mon Apr 12 15:11:03 2021
#
# Accessible filesystems, by reference, are maintained under '/dev/disk'
# See man pages fstab(5), findfs(8), mount(8) and/or blkid(8) for more info
#
/dev/mapper/VolGroup-lv_root /                       ext4    defaults        1 1
UUID=ef56ba7f-4125-490b-aae8-59eaadcbf284 /boot                   ext4    defaults        1 2
/dev/mapper/VolGroup-lv_swap swap                    swap    defaults        0 0
tmpfs                   /dev/shm                tmpfs   defaults        0 0
devpts                  /dev/pts                devpts  gid=5,mode=620  0 0
sysfs                   /sys                    sysfs   defaults        0 0
proc                    /proc                   proc    defaults        0 0
/dev/VoL00/gfs          /gfs                    gfs2    defaults        0 0

 

 

■ GFS2 파일시스템 테스트

#Node1 에서 파일생성
[root@node1 gfs]# touch /gfs/1
[root@node1 gfs]# ll /gfs
합계 12
-rw-r--r-- 1 root root 0 2021-04-13 17:09 1

#Node2 에서 확인
[root@node2 gfs]# ll /gfs/
합계 12
-rw-r--r-- 1 root root 0 2021-04-13 17:09 1