/init: error while loading shared libraries: libm.so.6:
cannot open shared object file: No such file or directory

You'll now be chrooted under your
future / partition.
Go under /boot and rebuild your init(rd|ramfs) with
mkinitrd -f -v initrd-2.x.y.img 22.x.y. e.g.
or initramfs, dracut, .... then type exit to finish

/init: error while loading shared libraries: libm.so.6:
cannot open shared object file: No such file or directory

# action taken on host boot
# - start   all guests which were running on shutdown are started on boot
#           regardless on their autostart settings
# - ignore  libvirt-guests init script won't start any guest on boot, however,
#           guests marked as autostart will still be automatically started by
#           libvirtd
ON_BOOT=start

# Number of seconds to wait between each guest start. Set to 0 to allow
# parallel startup.
START_DELAY=20

# action taken on host shutdown
# - suspend   all running guests are suspended using virsh managedsave
# - shutdown  all running guests are asked to shutdown. Please be careful with
#             this settings since there is no way to distinguish between a
#             guest which is stuck or ignores shutdown requests and a guest
#             which just needs a long time to shutdown. When setting
#             ON_SHUTDOWN=shutdown, you must also set SHUTDOWN_TIMEOUT to a
#             value suitable for your guests.
ON_SHUTDOWN=shutdown ←ここをshutdownにする

# If set to non-zero, shutdown will suspend guests concurrently. Number of
# guests on shutdown at any time will not exceed number set in this variable.
PARALLEL_SHUTDOWN=2

# Number of seconds we're willing to wait for a guest to shut down. If parallel
# shutdown is enabled, this timeout applies as a timeout for shutting down all
# guests on a single URI defined in the variable URIS. If this is 0, then there
# is no time out (use with caution, as guests might not respond to a shutdown
# request). The default value is 300 seconds (5 minutes).
SHUTDOWN_TIMEOUT=120

[mondorescue]
name=rhel 6 x86_64 - mondorescue Vanilla Packages
baseurl=ftp://ftp.mondorescue.org//rhel/6/x86_64
enabled=1
gpgcheck=1
priority=5　← これを追記
gpgkey=ftp://ftp.mondorescue.org//rhel/6/x86_64/mondorescue.pubkey

インストール:
  mondo.x86_64 0:3.2.1-1.rhel6
依存性関連をインストールしました:
  afio.x86_64 0:2.5-1.rhel6                                   buffer.x86_64 0:1.19-4.rhel6
  mindi.x86_64 0:3.0.1-1.rhel6                                mindi-busybox.x86_64 0:1.21.1-1.rhel6
  perl-Archive-Tar.x86_64 0:1.58-141.el6                      perl-ExtUtils-CBuilder.x86_64 1:0.27-141.el6
  perl-IO-Interface.x86_64 0:1.05-2.el6                       perl-IO-Zlib.x86_64 1:1.09-141.el6
  perl-Module-Build.x86_64 1:0.3500-141.el6                   perl-Module-ScanDeps.noarch 0:0.95-2.el6
  perl-MondoRescue.noarch 0:3.2.1-1.rhel6                     perl-Net-IPv4Addr.noarch 0:0.10-6.el6
  perl-Package-Constants.x86_64 1:0.02-141.el6                perl-ProjectBuilder.noarch 0:0.13.1-1.rhel6
  syslinux.x86_64 0:4.04-3.el6                                syslinux-nonlinux.noarch 0:4.04-3.el6

  samba version 4.1.22 started.
  Copyright Andrew Tridgell and the Samba Team 1992-2013 
ldb: module version mismatch in ../source4/dsdb/samdb/ldb_modules/acl.c : 
ldb_version=1.1.20 module_version=1.1.25 ldb: failed to initialise module /usr/lib64/samba/ldb/acl.so : Unavailable

エラー: 依存性の欠如: 	libtalloc >= 2.1.4 は libldb-1.1.25-1.el6_8.wing.x86_64 に必要とされています
	libtevent >= 0.9.26 は libldb-1.1.25-1.el6_8.wing.x86_64 に必要とされています

class Library < ActiveRecord::Base
accepts_nested_attributes_for :docs, allow_destroy: true

class Doc < ActiveRecord::Base
belongs_to :library

<%= nested_form_for @library, :html => { :class => "form-horizontal library" } do |f| %><font color=#006400 ->
 ---------- 省略
    <table class="table table-striped">
      <thead>
        <tr>
          <th><%= model_class.human_attribute_name(:ファイル名　　＊＊編集の場合ファイル名とバージョンは変更不可＊＊) %></th>
          <th><%= model_class.human_attribute_name(:バージョン) %></th>
          <th><%= model_class.human_attribute_name(:備考) %></th>
        </tr>
      </thead>
      <%= f.fields_for :docs do |df| %>
      <tr class="nested-fields">
        <td><%= f.text_field :file_name, :readonly => true, :size => 56 %></td>
        <td><%= f.text_field :version, :readonly => true, :size => 8 %></td>
        <td><%= f.text_area :remarks, :size => "30x1" %></td>
      </tr>
      <% end %>  
      <td></td><td><%= f.submit '保存', class: 'btn btn-primary' %></td>
    </table>
<% end %>

class LibrariesController < ApplicationController
  ---------- 省略
  private
    # Use callbacks to share common setup or constraints between actions.
    def set_library
      @library = Library.find(params[:id])
    end

    # Never trust parameters from the scary internet, only allow the white list through.
    def library_params
      params.require(:library).permit(:prod, :model, :serial_no, :seizo_nen, :company, :branch, :section,
　　　　　　 :incharge, :nonyu_bi, :remarks, :pictures,
             :docs_attributes => [:id, :file_name, :version, :remarks, :_destroy],
             :pictures_attributes => [:images, :_destroy])　←これは他のモデルの分
    end
end

Oct 13 08:40:43 web5 dovecot: imap(xxxxx@kinryokai.net):
Error: rename(/xxx/kinryokai.net/xxx/new/1443067247.Vfc40Ia01e2M488912.web5.kinryokai.net,
/xxx/kinryokai.net/xxx/cur/1443067247.Vfc40Ia01e2M488912.web5.kinryokai.net:2,)
failed: Input/output error