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Contents
module LinuxAdmin
class PhysicalVolume < Volume
# physical volume device name
attr_accessor :device_name
# volume group name
attr_accessor :volume_group
# physical volume size in kilobytes
attr_accessor :size
# other fields available
# internal physical volume number (obsolete)
# physical volume status
# physical volume (not) allocatable
# current number of logical volumes on this physical volume
# physical extent size in kilobytes
# total number of physical extents
# free number of physical extents
# allocated number of physical extents
def initialize(args = {})
@device_name = args[:device_name]
@volume_group = args[:volume_group]
@size = args[:size]
end
def attach_to(vg)
Common.run!(Common.cmd(:vgextend),
:params => [vg.name, @device_name])
self.volume_group = vg
self
end
# specify disk or partition instance to create physical volume on
def self.create(device)
self.scan # initialize local physical volumes
Common.run!(Common.cmd(:pvcreate),
:params => { nil => device.path})
pv = PhysicalVolume.new(:device_name => device.path,
:volume_group => nil,
:size => device.size)
@pvs << pv
pv
end
def self.scan
@pvs ||= begin
scan_volumes(Common.cmd(:pvdisplay)) do |fields, vg|
PhysicalVolume.new(:device_name => fields[0],
:volume_group => vg,
:size => fields[2].to_i)
end
end
end
end
end
Version data entries
21 entries across 21 versions & 1 rubygems