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
ZFS: Verify/change properties of a zfs filesystem
Viewed 764 times since Sun, Jun 3, 2018
How to encrypt a partition using LUKS?
Viewed 635 times since Fri, Jul 13, 2018
Linux – delete the LUN and remove traces from OS
Viewed 1017 times since Tue, May 22, 2018
ZPOOL: Grow a zpool by adding new device(s)
Viewed 787 times since Sun, Jun 3, 2018
RHEL: Route network packets to go out via the same interface they came in
Viewed 1254 times since Sat, Jun 2, 2018
Creating SWAP partition using FDISK & FALLOCATE commands
Viewed 382 times since Thu, Jan 16, 2020
How to find the largest files and directories in Linux?
Viewed 1333 times since Sun, May 20, 2018
How to Analyze or Read OS Watcher Output in three easy steps -- With Example ?
Viewed 3868 times since Thu, Jun 21, 2018
10 Linux cryptsetup Examples for LUKS Key Management (How to Add, Remove, Change, Reset LUKS encryption Key)
Viewed 1158 times since Tue, Jul 31, 2018
10 nmap Commands Every Sysadmin Should Know
Viewed 736 times since Wed, May 22, 2019