RHCS6: Create a new Logical Volume / Global Filesystem 2 (GFS2)

RHCS: Create a new Logical Volume / Global Filesystem 2 (GFS2)

# Tested on RHEL 6

# I included this recipe as part of Red Hat Cluster Suite but, in fact, gfs2 is part of an
# optional package and not part of Red Hat Cluster Suite.

# In any case, to configure gfs2 subsystem we need to install Red Hat Cluster layer first

# Once Red Hat Cluster configured we'll follow following procedure (run commands on all
# nodes making up our cluster except when indicated):

# Required package installation:

yum install lvm2-cluster gfs2-utils


# Change LVM locking type to use built-in cluster locking on all cluster nodes. This
# can be done by either changing "locking-type" to '3' in /etc/lvm/lvm.conf configuration
file or by running:

lvmconf --enable-cluster


# Let's activate and start necessary services

chkconfig gfs2 on
chkconfig clvmd on

service clvmd start
service gfs2 start


# GFS2 construction...

# We'll run following commands only on one of the nodes in the cluster ------

DISK=/dev/sdc1
VG=gfsvg
LV=lv_gfs_test
MNTPT=/sharedfs
SIZE=5GB
JOURNALS=4                   # The number of journals for gfs2_mkfs. I recommend to
                             # use 2 journals per machine that will mount the fs.

CLUSTERNAME=mycluster        # We will user "clustername" for the lock table field (-t)
                             # that should have the form clustername:fsname. Clustername must
                             # match that in cluster.conf; only members of the cluster are
                             # permitted to use this filesystem. Fsname (1 to  16  characters)
                             # must be unique so I recommend to use clustername:lv_name
 

pvcreate $DISK

vgcreate $VG $DISK

vgchange -cy $VG

lvcreate -n $LV -L $SIZE $VG

mkfs.gfs2 -j$JOURNALS -p lock_dlm -t $CLUSTERNAME:$LV /dev/$VG/$LV

# ---------------------------------------------------------------------------


# Update /etc/fstab and mount F.S. on every server forming the cluster

echo "/dev/$VG/$LV    $MNTPT       gfs2     defaults     0 0"   >> /etc/fstab

mkdir $MNTPT
mount $MNTPT
0 (0)
Article Rating (No Votes)
Rate this article
Attachments
There are no attachments for this article.
Comments
There are no comments for this article. Be the first to post a comment.
Full Name
Email Address
Security Code Security Code
Related Articles RSS Feed
RHEL: Change system’s hostname
Viewed 1784 times since Sun, May 27, 2018
How To Use the Linux Auditing System on CentOS 7
Viewed 1859 times since Fri, Apr 5, 2019
Linux Add a Swap File – HowTo
Viewed 8817 times since Fri, Jun 8, 2018
ubuntu How to Reset Forgotten Root Password in Ubuntu
Viewed 619 times since Tue, Dec 8, 2020
Moving SSL Certificate from IIS to Apache
Viewed 803 times since Mon, Feb 18, 2019
RHEL: What is "SysRq key" and how to use it
Viewed 2837 times since Sat, Jun 2, 2018
ZFS: Verify/change properties of a zfs filesystem
Viewed 1284 times since Sun, Jun 3, 2018
How log rotation works with logrotate
Viewed 2569 times since Fri, Nov 30, 2018
Linux / UNIX: Run Command a Number of Times In a Row
Viewed 13529 times since Tue, Aug 6, 2019
Linux Chage Command to Set Password Aging for User
Viewed 886 times since Tue, Sep 11, 2018