提高磁盘大小
qemu-img resize vmdisk.qcow2 +10G
# check
qemu-img info vmdisk.qcow2
image: archlinux-x86_64-cc.qcow2
file format: qcow2
virtual size: 50 GiB (53687091200 bytes)
disk size: 12.6 GiB
cluster_size: 65536
Format specific information:
compat: 1.1
compression type: zlib
lazy refcounts: false
refcount bits: 16
corrupt: false
extended l2: false
Child node '/file':
filename: archlinux-x86_64-cc.qcow2
protocol type: file
file length: 12.6 GiB (13574930432 bytes)
disk size: 12.6 GiB
但是 df -h 的结果并没有区别??