kvmへ仮想HDD追加方法「Ubuntu 11版」

<Host PC>
1.Guestをshutdownする
# virsh shutdown/destroy <id>

2.ホストUbuntuに仮想HDD作成
# qemu-img create -f qcow2 /hdd/NewHDD.qcow2 500G

3.xmlファイルへ仮想HDDの定義追記
# vi /etc/libvirt/qemu/virtualServer.xml

…(省略)…

<disk type=’file’ device=’disk’>
<driver name=’qemu’ type=’qcow2’/>
<source file=’/hdd/NewHDD.qcow2’/>
<target dev=’vdb’ bus=’virtio’/>
</disk>

4. xml修正反映
# virsh define /etc/libvirt/qemu/virtualServer.xml

5.Guestを起動
# virsh start Guest

<Guest PC>
1.新仮想HDDのPartitions作成
# fdisk /dev/vdb

2.EXT4 FSフォーマット
# mkfs.ext4 /dev/vdb1
mke2fs 1.41.14 (22-Dec-2010)
Filesystem label=
OS type: Linux
Block size=4096 (log=2)
Fragment size=4096 (log=2)
Stride=0 blocks, Stripe width=0 blocks
32768000 inodes, 131071870 blocks
6553593 blocks (5.00%) reserved for the super user
First data block=0
Maximum filesystem blocks=4294967296
4000 block groups
32768 blocks per group, 32768 fragments per group
8192 inodes per group
Superblock backups stored on blocks:
32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208,
4096000, 7962624, 11239424, 20480000, 23887872, 71663616, 78675968,
102400000

Writing inode tables: done
Creating journal (32768 blocks): done
Writing superblocks and filesystem accounting information: done

This filesystem will be automatically checked every 23 mounts or
180 days, whichever comes first. Use tune2fs -c or -i to override.

3.mount HDD
# mount -t ext4 /dev/vdb1 /hdd/NewHDD

4.fstab登録
# vi /etc/fstab

/dev/vdb1 /hdd/NewHDD ext4 defaults 0 0

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