ephemeral_lvm cookbook

This cookbook will identify the ephemeral devices available on the instance based on Ohai data. If no ephemeral devices are found, it will gracefully exit with a log message. If ephemeral devices are found, they will be setup to use LVM and a logical volume will be created, formatted, and mounted. If multiple ephemeral devices are found (e.g. m1.large on EC2 has 2 ephemeral devices with 420 GB each), they will be striped to create the LVM.

Github Repository: https://github.com/rightscale-cookbooks/ephemeral_lvm

Requirements

• Chef 11 or higher
• A cloud that supports ephemeral devices. Currently supported clouds: EC2, Openstack, and Google.
• Cookbook requirements
  • lvm
• Platforms
  • Ubuntu 12.04
  • CentOS 6

Usage

Place the ephemeral_lvm::default in the runlist and the ephemeral devices will be setup.

Attributes

• node['ephemeral_lvm']['filesystem'] - the filesystem to be used on the ephemeral volume. Default: 'ext4'
• node['ephemeral_lvm']['mount_point'] - the mount point for the ephemeral volume. Default: '/mnt/ephemeral'
• node['ephemeral_lvm']['volume_group_name'] - the volume group name for the ephemeral LVM. Default: 'vg-data'
• node['ephemeral_lvm']['logical_volume_size'] - the size to be used for the ephemeral LVM. Default: '100%VG' - This will use all available space in the volume group.
• node['ephemeral_lvm']['logical_volume_name'] - the name of the logical volume for ephemeral LVM. Default: 'ephemeral0'
• node['ephemeral_lvm']['stripe_size'] - the stripe size to be used for the ephemeral logical volume. Default: 512

Recipes

default

This recipe sets up available ephemeral devices to be an LVM device, formats it, and mounts it.

Author

Author:: RightScale, Inc. (cookbooks@rightscale.com)