6 kvm添加虚拟硬盘

1 建立新的虚拟硬盘

# qemu-img create -f qcow2 /data/kvm/CentOs6.7_2.qcow2 2G

2 关闭虚拟机

# virsh shutdown CentOs6.7

3 编辑配置文件，注意source file和source file

<disk type='file' device='disk'>

      <driver name='qemu' type='qcow2' cache='none'/>

      <source file='/data/kvm/CentOs6.7.qcow2'/>

      <target dev='vda' bus='virtio'/>

      <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/>

</disk>

<disk type='file' device='disk'>

      <driver name='qemu' type='qcow2' cache='none'/>

      <source file='/data/kvm/CentOs6.7_2.qcow2'/>

      <source file='vdb' bus='virtio'/>

# 此行删去，会自动生成

#      <address type='pci' domain='0x0000' bus='0x00' slot='0x07' function='0x0'/>

</disk>

4 启动虚拟机

# virsh start CentOs6.7 --console

5 分区、格式化、挂载便可使用

# mkfs.ext4 /dev/vdb

# mount /dev/vdb /mnt/

6 此处也能够将新的虚拟磁盘加入root的lvm中，此处不详述

# pvcreate /dev/vdb

# vgextend VolGroup /dev/vdb

# lvextend -l +100%FREE /dev/VolGroup/lv_root

# resize2fs -p /dev/VolGroup/lv_root

# df -h

来自为知笔记(Wiz)