Class: LinuxAdmin::VolumeGroup

Inherits:
LinuxAdmin show all
Defined in:
lib/linux_admin/volume_group.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 = {}) ⇒ VolumeGroup

other fields available volume group access volume group status internal volume group number maximum number of logical volumes current number of logical volumes open count of all logical volumes in this volume group maximum logical volume size maximum number of physical volumes current number of physical volumes actual number of physical volumes size of volume group in kilobytes physical extent size total number of physical extents for this volume group allocated number of physical extents for this volume group free number of physical extents for this volume group uuid of volume group



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# File 'lib/linux_admin/volume_group.rb', line 29

def initialize(args = {})
  @name   = args[:name]
end

Instance Attribute Details

#name ⇒ Object

volume group name



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

def name
  @name
end

Class Method Details

.create(name, pv) ⇒ Object 



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# File 'lib/linux_admin/volume_group.rb', line 46

def self.create(name, pv)
  self.scan # initialize local volume groups
  run!(cmd(:vgcreate),
      :params => [name, pv.device_name])
  vg = VolumeGroup.new :name => name
  pv.volume_group = vg
  @vgs << vg
  vg
end

.scan ⇒ Object 



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# File 'lib/linux_admin/volume_group.rb', line 56

def self.scan
  @vgs ||= begin
    vgs = []

    out = run!(cmd(:vgdisplay), :params => { '-c' => nil}).output

    out.each_line do |line|
      fields = line.lstrip.split(':')
      vgs << VolumeGroup.new(:name => fields[0])
    end

    vgs
  end
end

Instance Method Details

#attach_to(lv) ⇒ Object 



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

def attach_to(lv)
  run!(cmd(:lvextend),
      :params => [lv.name, self.name])
  self
end

#extend_with(pv) ⇒ Object 



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# File 'lib/linux_admin/volume_group.rb', line 39

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