Class: LinuxAdmin::PhysicalVolume

Inherits:
Volume show all
Defined in:
lib/linux_admin/physical_volume.rb

Constant Summary

Constants inherited from LinuxAdmin

VERSION

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Methods included from Common

#cmd, #run, #run!

Constructor Details

#initialize(args = {}) ⇒ PhysicalVolume

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



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# File 'lib/linux_admin/physical_volume.rb', line 27

def initialize(args = {})
  @device_name  = args[:device_name]
  @volume_group = args[:volume_group]
  @size         = args[:size]
end

Instance Attribute Details

#device_name ⇒ Object

physical volume device name



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# File 'lib/linux_admin/physical_volume.rb', line 9

def device_name
  @device_name
end

#size ⇒ Object

physical volume size in kilobytes



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# File 'lib/linux_admin/physical_volume.rb', line 15

def size
  @size
end

#volume_group ⇒ Object

volume group name



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# File 'lib/linux_admin/physical_volume.rb', line 12

def volume_group
  @volume_group
end

Class Method Details

.create(device) ⇒ Object

specify disk or partition instance to create physical volume on



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# File 'lib/linux_admin/physical_volume.rb', line 41

def self.create(device)
  self.scan # initialize local physical volumes
  run!(cmd(:pvcreate),
      :params => { nil => device.path})
  pv  = PhysicalVolume.new(:device_name  => device.path,
                           :volume_group => nil,
                           :size => device.size)
  @pvs << pv
  pv
end

.scan ⇒ Object 



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# File 'lib/linux_admin/physical_volume.rb', line 52

def self.scan
  @pvs ||= begin
    scan_volumes(cmd(:pvdisplay)) do |fields, vg|
      PhysicalVolume.new(:device_name  => fields[0],
                         :volume_group => vg,
                         :size         => fields[2].to_i)
     end
  end
end

Instance Method Details

#attach_to(vg) ⇒ Object 



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# File 'lib/linux_admin/physical_volume.rb', line 33

def attach_to(vg)
  run!(cmd(:vgextend),
      :params => [vg.name, @device_name])
  self.volume_group = vg
  self
end