Class: LVM::Wrapper::LVS

Inherits:
Object
  • Object
show all
Includes:
Reporting
Defined in:
lib/lvm/wrapper/lvs.rb

Constant Summary collapse

BASE_COMMAND = 
"lvs #{Reporting::BASE_ARGUMENTS}"
ATTRIBUTES_FILE = 
'lvs.yaml'
VOLUME_TYPE =

lv_attr attribute handling constants roughly by order referenced in lib/report/report.c:292 (_lvstatus_disp)

{
  'p' => :pvmove,
  'c' => :conversion,
  'M' => :mirror_not_synced,
  'm' => :mirror,
  'i' => :mirror_image,
  'I' => :mirror_image_not_synced,
  'l' => :mirror_log,
  'v' => :virtual,
  'o' => :origin,
  's' => :snapshot,
  'S' => :invalid_snapshot,
  # custom, empty is a standard volume
  '-' => :normal
}
PERMISSIONS = 
{
  'w' => :writeable,
  'r' => :readonly,
  # custom, from reading source
  '-' => :locked_by_pvmove,
}
ALLOCATION_POLICY = 
{
  'c' => :contiguous,
  'l' => :cling,
  'n' => :normal,
  'a' => :anywhere,
  'i' => :inherited,
  'C' => :contiguous_locked,
  'L' => :cling_locked,
  'N' => :normal_locked,
  'A' => :anywhere_locked,
  'I' => :inherited_locked
}
FIXED_MINOR = 
{
  # code says its a boolean
  'm' => true
}
STATE = 
{
  's' => :suspended,
  'a' => :active,
  'i' => :inactive_with_table,
  'd' => :inactive_without_table,
  'S' => :suspended_snapshot,
  'I' => :invalid_snapshot
}
DEVICE_OPEN = 
{
  # code says its a boolean
  'o' => true 
}

Constants included from Reporting::Constants

Reporting::Constants::BASE_ARGUMENTS, Reporting::Constants::EMPTY, Reporting::Constants::SEPERATOR

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from Reporting

build_command, process_line

Constructor Details

#initialize(options) ⇒ LVS

Returns a new instance of LVS.



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# File 'lib/lvm/wrapper/lvs.rb', line 12

def initialize(options)
  @attributes = Attributes.load(options[:version], ATTRIBUTES_FILE)
  @command = "#{options[:command]} #{Reporting.build_command(attributes, BASE_COMMAND)}"
end

Instance Attribute Details

#attributes ⇒ Object (readonly)

Returns the value of attribute attributes.



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# File 'lib/lvm/wrapper/lvs.rb', line 9

def attributes
  @attributes
end

#command ⇒ Object (readonly)

Returns the value of attribute command.



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# File 'lib/lvm/wrapper/lvs.rb', line 10

def command
  @command
end

Instance Method Details

#list ⇒ Object 



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# File 'lib/lvm/wrapper/lvs.rb', line 73

def list
  output = External.cmd(@command)
  data = parse(output)
  if block_given?
    return data.each { |obj| yield obj }
  else
    return data
  end
end