Class: Dcmgr::Drivers::LinuxIscsi

Inherits:
IscsiTarget show all
Includes:
Helpers::CliHelper, Logger
Defined in:
lib/dcmgr/drivers/linux_iscsi.rb

Constant Summary collapse

IQN_PREFIX = 
"iqn.2010-09.jp.wakame".freeze

Instance Attribute Summary

Attributes inherited from IscsiTarget

#node

Instance Method Summary collapse

Methods included from Helpers::CliHelper

#sh, #tryagain

Methods included from Logger

create, default_logdev, included

Methods inherited from IscsiTarget

select_iscsi_target

Instance Method Details

#create(ctx) ⇒ Object 



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# File 'lib/dcmgr/drivers/linux_iscsi.rb', line 11

def create(ctx)
  @volume    = ctx.volume
  @volume_id = ctx.volume_id
  @node      = ctx.node

  vol_path = File.join(@volume[:storage_node][:export_path], @volume[:account_id], @volume[:uuid]) 
  
  @volume[:transport_information] = iscsi = {}
  iscsi[:iqn] = "#{IQN_PREFIX}:#{@volume[:account_id]}.#{@volume[:uuid]}"
  iscsi[:tid] = pick_next_tid
  iscsi[:lun] = 1
  iscsi[:backing_store] = vol_path

  register(@volume)
  
  opt = { :iqn => iscsi[:iqn], :lun => iscsi[:lun], :tid => iscsi[:tid], :backing_store => iscsi[:backing_store] }
end

#delete(ctx) ⇒ Object 



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# File 'lib/dcmgr/drivers/linux_iscsi.rb', line 29

def delete(ctx)
  @volume = ctx.volume
  sh("/usr/sbin/tgt-admin --delete #{@volume[:transport_information][:iqn]}")
end

#register(volume) ⇒ Object 



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# File 'lib/dcmgr/drivers/linux_iscsi.rb', line 34

def register(volume)
  tinfo = volume[:transport_information]

  # register target
  sh("/usr/sbin/tgtadm --lld iscsi --op new --mode=target --tid=%s --targetname %s", [tinfo[:tid], tinfo[:iqn]])
  # register logical unit
  sh("/usr/sbin/tgtadm --lld iscsi --op new --mode=logicalunit --tid=%s --lun=%s -b %s",
     [tinfo[:tid], tinfo[:lun], tinfo[:backing_store]])
  # bind target
  sh("/usr/sbin/tgtadm --lld iscsi --op bind --mode=target --tid=%s --initiator-address=%s",
     [tinfo[:tid], node.manifest.config.initiator_address])
end