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Vagrantfileで大きめのストレージを作る方法

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概要

Vagrant経由のVMで作業したいけど、大きめのディスク容量を確保したい。
予め判っているなら、Vagrantfileで済ませたい。そういうこと、まれによくある
マウント手順も怪しいのでメモ。本当はもっとスマートにしたかったけど知識が足りない。

初心者なもんですから、何でもかんでもメモっておきたくて。

環境

  • Vagrant 1.7.4
  • VirtualBox 5.0.10
  • CentOS 7.1

手順

Vagrantfile

Vagrantfileに下記を追記します

Vagrantfile
  config.vm.provider :virtualbox do |vb|
    file_to_disk = "./disk1.vdi"
    unless File.exist?(file_to_disk)
      vb.customize ['createhd', '--filename', file_to_disk, '--format', 'VDI', '--size', 20 * 1024, '--variant', 'Standard']
      vb.customize ['storageattach', :id, '--storagectl', 'SATA Controller', '--port', 1, '--device', 0, '--type', 'hdd', '--medium', file_to_disk]
    end
  end

ssh

fdisk -l を実行し、/dev/sdb が表示されることを確認します

sh
# fdisk -l

fdisk /dev/sdb を実行し、対話式で下記の通り操作します

sh
# fdisk /dev/sdb
Welcome to fdisk (util-linux 2.23.2).

Changes will remain in memory only, until you decide to write them.
Be careful before using the write command.

Device does not contain a recognized partition table
Building a new DOS disklabel with disk identifier 0x60b67fe0.

Command (m for help): n
Partition type:
   p   primary (0 primary, 0 extended, 4 free)
   e   extended
Select (default p): p
Partition number (1-4, default 1): 
First sector (2048-41943039, default 2048): 
Using default value 2048
Last sector, +sectors or +size{K,M,G} (2048-41943039, default 41943039): 
Using default value 41943039
Partition 1 of type Linux and of size 20 GiB is set

Command (m for help): w
The partition table has been altered!

Calling ioctl() to re-read partition table.
Syncing disks.

mkfs を実行後、マウントポイントを作成します

sh
# mkfs -t ext4 /dev/sdb1
# mkdir /disk1

/etc/fstab の末尾に下記を追記します

/etc/fstab
/dev/sdb1 /disk1 ext4 defaults 0 0

マウントします

sh
mount -a

以上

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