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# Simple? gluster module by James
# Copyright (C) 2010-2012 James Shubin
# Written by James Shubin <james@shubin.ca>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
define gluster::brick(
$dev, # /dev/sdc, /dev/disk/by-id/scsi-36003048007e14f0014ca2743150a5471
$fsuuid, # set a uuid for this fs (uuidgen)
$labeltype = '', # gpt
$fstype = '', # xfs
$xfs_inode64 = false,
$xfs_nobarrier = false,
$ro = false, # use for emergencies only- you want your fs rw
$force = false, # if true, this will overwrite any xfs fs it sees, useful for rebuilding gluster and wiping data. NOTE: there are other safeties in place to stop this.
$areyousure = false # do you allow puppet to do dangerous things ?
) {
# eg: annex1.example.com:/storage1a
$split = split($name, ':') # do some $name parsing
$host = $split[0] # host fqdn
$mount = $split[1] # brick mount
if ! ( "${host}:${mount}" == "${name}" ) {
fail('The brick $name must match a $host-$mount pattern.')
}
Gluster::Host[$host] -> Gluster::Brick[$name] # brick requires host
$ro_bool = $ro ? { # this has been added as a convenience
true => 'ro',
default => 'rw',
}
$valid_labeltype = $labeltype ? {
#'msdos' => 'msdos', # TODO
default => 'gpt',
}
$valid_fstype = $fstype ? {
'ext4' => 'ext4', # TODO
default => 'xfs',
}
$force_flag = $force ? {
true => 'f',
default => '',
}
# XFS mount options:
# http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=blob;f=Documentation/filesystems/xfs.txt;hb=HEAD
if ( $valid_fstype == 'xfs' ) {
# exec requires
include gluster::brick::xfs
$exec_requires = [Package['xfsprogs']]
# mkfs w/ uuid command
# NOTE: the -f forces creation when it sees an old xfs part
# TODO: xfs_admin doesn't have a --quiet flag. silence it...
$exec_mkfs = "/sbin/mkfs.${valid_fstype} -q${force_flag} `/bin/readlink -e ${dev}`1 && /usr/sbin/xfs_admin -U '${fsuuid}' `/bin/readlink -e ${dev}`1"
# By default, XFS allocates inodes to reflect their on-disk
# location. However, because some 32-bit userspace applications
# are not compatible with inode numbers greater than 232, XFS
# will allocate all inodes in disk locations which result in
# 32-bit inode numbers. This can lead to decreased performance
# on very large filesystems (i.e. larger than 2 terabytes),
# because inodes are skewed to the beginning of the block
# device, while data is skewed towards the end.
# To address this, use the inode64 mount option. This option
# configures XFS to allocate inodes and data across the entire
# file system, which can improve performance.
$option01 = $xfs_inode64 ? {
true => 'inode64',
default => '',
}
# By default, XFS uses write barriers to ensure file system
# integrity even when power is lost to a device with write
# caches enabled. For devices without write caches, or with
# battery-backed write caches, disable barriers using the
# nobarrier option.
$option02 = $xfs_nobarrier ? {
true => 'nobarrier',
default => '',
}
$options_list = ["${option01}", "${option02}"]
} elsif ( $valid_fstype == 'ext4' ) {
# exec requires
include gluster::brick::ext4
$exec_requires = [Package['e2fsprogs']]
# mkfs w/ uuid command
$exec_mkfs = "/sbin/mkfs.${valid_fstype} -U '${fsuuid}' `/bin/readlink -e ${dev}`1"
# mount options
$options_list = [] # TODO
}
# put all the options in an array, remove the empty ones, and join with
# commas (this removes ',,' double comma uglyness)
# adding 'defaults' here ensures no ',' (leading comma) in mount command
$mount_options = inline_template('<%= (["defaults"]+options_list).delete_if {|x| x.empty? }.join(",") %>')
$exec_noop = $areyousure ? {
true => false,
default => true,
}
# if we're on itself
if ( "${fqdn}" == "${host}" ) {
# first get the device ready
# the scary parted command to run...
$exec_mklabel = "/sbin/parted -s -m -a optimal ${dev} mklabel ${valid_labeltype}"
$exec_mkpart = "/sbin/parted -s -m -a optimal ${dev} mkpart primary 0% 100%"
$scary_exec = "${exec_mklabel} && ${exec_mkpart} && ${exec_mkfs}" # the command
if $exec_noop {
notify { "noop for ${name}":
message => "${scary_exec}",
}
}
exec { "${scary_exec}":
logoutput => on_failure,
unless => [ # if one element is true, this *doesn't* run
"/usr/bin/test -e `/bin/readlink -e ${dev}`1", # does partition 1 exist ?
"/usr/bin/test -e /dev/disk/by-uuid/${fsuuid}",
'/bin/false', # TODO: add more criteria
],
require => $exec_requires,
timeout => 3600, # set to something very long
noop => $exec_noop,
alias => "gluster-brick-make-${name}",
}
# make an empty directory for the mount point
file { "${mount}":
ensure => directory, # make sure this is a directory
recurse => false, # don't recurse into directory
purge => false, # don't purge unmanaged files
force => false, # don't purge subdirs and links
require => Exec["gluster-brick-make-${name}"],
}
mount { "${mount}":
atboot => true,
ensure => mounted,
device => "UUID=${fsuuid}",
fstype => "${valid_fstype}",
# noatime,nodiratime to save gluster from silly updates
options => "${mount_options},${ro_bool},noatime,nodiratime,noexec", # TODO: is nodev? nosuid? noexec? a good idea?
dump => '0', # fs_freq: 0 to skip file system dumps
# NOTE: technically this should be '2', to `fsck.xfs`
# after the rootfs ('1'), but fsck.xfs actually does
# 'nothing, successfully', so it's irrelevant, because
# xfs uses xfs_check and friends only when suspect.
pass => '2', # fs_passno: 0 to skip fsck on boot
require => [
File["${mount}"],
],
}
}
}
# vim: ts=8
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