Module: CephRuby::RadosBlockDeviceHelper

Included in:
RadosBlockDevice
Defined in:
lib/ceph-ruby/rados_block_device_helper.rb

Overview

Rados BlockDevice helper Methods

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.close_handle(handle) ⇒ Object 



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# File 'lib/ceph-ruby/rados_block_device_helper.rb', line 11

def self.close_handle(handle)
  Lib::Rbd.rbd_close(handle)
  true
end

.parse_dst_pool(dst_pool, pool) ⇒ Object 



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# File 'lib/ceph-ruby/rados_block_device_helper.rb', line 16

def self.parse_dst_pool(dst_pool, pool)
  if dst_pool.is_a? String
    dst_pool = cluster.pool(dst_pool)
  elsif dst_pool.nil?
    dst_pool = pool
  end
  dst_pool.ensure_open
  dst_pool
end

.parse_stat(stat) ⇒ Object 



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# File 'lib/ceph-ruby/rados_block_device_helper.rb', line 4

def self.parse_stat(stat)
  Hash[[:size, :obj_size, :num_objs, :order].map { |k| [k, stat[k]] }]
    .tap do |hash|
    hash[:block_name_prefix] = stat[:block_name_prefix].to_ptr.read_string
  end
end

Instance Method Details

#ensure_open ⇒ Object 



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# File 'lib/ceph-ruby/rados_block_device_helper.rb', line 30

def ensure_open
  return if open?
  open
end

#log(message) ⇒ Object 



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# File 'lib/ceph-ruby/rados_block_device_helper.rb', line 35

def log(message)
  CephRuby.log("rbd image #{pool.name}/#{name} #{message}")
end

#open? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/ceph-ruby/rados_block_device_helper.rb', line 26

def open?
  !handle.nil?
end