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
How do I add ethtool settings to a network device permanently?
Viewed 5437 times since Mon, May 21, 2018
RHEL: Getting/Setting hardware clock’s time
Viewed 2005 times since Sat, Jun 2, 2018
Build a simple RPM that packages a single file
Viewed 6759 times since Sat, Jun 2, 2018
Linux Network (TCP) Performance Tuning with Sysctl
Viewed 9370 times since Fri, Aug 3, 2018
Zabijanie wszystkich procesów użytkownika
Viewed 1822 times since Thu, May 24, 2018
How to Synchronize Directories Using Lsyncd in Linux
Viewed 10958 times since Wed, Oct 31, 2018
ZFS: Verify/change properties of a zfs filesystem
Viewed 1826 times since Sun, Jun 3, 2018
Netcat shell zabezpieczony hasłem
Viewed 1451 times since Thu, May 24, 2018
A tcpdump Tutorial and Primer with Examples
Viewed 3504 times since Sun, Jun 17, 2018
RHEL: Crash kernel dumps configuration and analysis on RHEL 7
Viewed 6100 times since Sat, Jun 2, 2018