Installation guide

described in Section F.2, “ Configuring HA-LVM Failover with Tagging” .

F.1. Configuring HA-LVM Failover wit h CLVM (preferred)

To set up HA-LVM failover (using the preferred CLVM variant), perform the following steps:

1. Ensure that your system is configured to support CLVM, which requires the following:

The High Availability Add-On and Resilient Storage Add-On are installed, including the

the cmirro r package if the CLVM logical volumes are to be mirrored.

The l o cki ng _type parameter in the global section of the /etc/l vm/l vm. co nf file is

set to the value '3'.

The High Availability Add-On and Resilient Storage Add-On software, including the

cl vmd daemon, must be running. For CLVM mirroring, the cmirro rd service must be

started as well.

2. Create the logical volume and file system using standard LVM and file system commands, as

in the following example.

# pvcreate /dev/sd [cd e]1

# vgcreate -cy shared_vg /d ev/sd [cd e]1

# l vcreate -L 10 G -n ha_l v shared_vg

# mkfs. ext4 /d ev/shared _vg /ha_lv

# l vchang e -an shared _vg /ha_l v

For information on creating LVM logical volumes, refer to Logical Volume Manager

Administration.

3. Edit the /etc/cluster/cluster. co nf file to include the newly created logical volume as a

resource in one of your services. Alternately, you can use Co n g a or the ccs command to

configure LVM and file system resources for the cluster. The following is a sample resource

manager section from the /etc/cl uster/cluster. co nf file that configures a CLVM

logical volume as a cluster resource:

<rm>

</failoverdomain>

</failoverdomains>

<fs name="FS" device="/dev/shared_vg/ha-lv" force_fsck="0"

force_unmount="1" fsid="64050" fstype="ext4" mountpoint="/mnt"

options="" self_fence="0"/>

</resources>

<service autostart="1" domain="FD" name="serv"

recovery="relocate">

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