Qemu的CentOS扩容

virsh list

Id    Name                           State
----------------------------------------------------
10    qemu_test                      running

qemu_test映射的qcow文件为test.qcow2

qemu-img info test.qcow2

image: /home/test.qcow2
file format: qcow2
virtual size: 3.0G (3221225472 bytes)
disk size: 912M
cluster_size: 65536
Format specific information:
    compat: 1.1
    lazy refcounts: false
    refcount bits: 16
    corrupt: false
 
# shutdown

virsh shutdown qemu_test
 
Domain qemu_test is being shutdown

扩容：

qemu-img resize test.qcow2 +5G
 
Image resized.

查看

qemu-img info test.qcow2
进入虚机：

创建磁盘分区

fdisk /dev/vda

根据CentOS的提示创建新的分区

格式化

这一步很重要

mkfs -t ext4 /dev/vda3

mount

mount /dev/vda3 /home

绝大部分转载于：https://blog.youkuaiyun.com/han0373/article/details/107861814