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RHCS6: Create a new Logical Volume / Global Filesystem 2 (GFS2)
Article Number: 200 | Rating: Unrated | Last Updated: Sun, Jun 3, 2018 9:41 AM
RHCS: Create a new Logical Volume / Global Filesystem 2 (GFS2)
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# 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 |
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