Provides Logical Resource Management (LVM) features for Puppet.
This module provides four resource types (and associated providers):
volume_group
, logical_volume
, physical_volume
, and filesystem
.
The basic dependency graph needed to define a working logical volume looks something like:
filesystem -> logical_volume -> volume_group -> physical_volume(s)
Here's a simple working example:
physical_volume { "/dev/hdc":
ensure => present
}
volume_group { "myvg":
ensure => present,
physical_volumes => "/dev/hdc"
}
logical_volume { "mylv":
ensure => present,
volume_group => "myvg"
size => "20G"
}
filesystem { "/dev/myvg/mylv":
ensure => "ext3"
}
This simple 1 physical volume, 1 volume group, 1 logical volume case
is provided as a simple volume
definition, as well. The above could
be shortened to be:
volume("myvg", "/dev/hdc", "mylv", "ext3", "20G")
If you need a more complex configuration, you'll need to build the resources out yourself.
Due to puppet's lack of composite keys for resources, you currently
cannot define two logical_volume
resources with the same name but
a different volume_group
.
You should not remove a physical_volume
from a volume_group
without ensuring the physical volume is no longer in use by a logical
volume (and possibly doing a data migration with the pvmove
executable).
Removing a physical_volume
from a volume_group
resource will cause the
pvreduce
to be executed -- no attempt is made to ensure pvreduce
does not attempt to remove a physical volume in-use.
Currently when defining logical_volume
resources the size
is only
used during creation. Resizing the logical volume (which normally
consists of modifying the logical volume, unmounting the filesystem,
resizing the filesystem, and remounting) is not currently supported.