Virtual machine qemu img信息:磁盘大小与虚拟大小-误解
请注意以下日志:Virtual machine qemu img信息:磁盘大小与虚拟大小-误解,virtual-machine,qemu,kvm,Virtual Machine,Qemu,Kvm,请注意以下日志: [user@machine]$ qemu-img info kvm_1 image: kvm_1 file format: qcow2 virtual size: 146G (157286400000 bytes) disk size: 101G cluster_size: 65536 backing file: /xyz.qcow2 backing file format: qcow2 Format specific information: compat: 0.10
[user@machine]$ qemu-img info kvm_1
image: kvm_1
file format: qcow2
virtual size: 146G (157286400000 bytes)
disk size: 101G
cluster_size: 65536
backing file: /xyz.qcow2
backing file format: qcow2
Format specific information:
compat: 0.10
[user@machine]$ qemu-img info kvm_2
image: kvm_2
file format: qcow2
virtual size: 146G (157286400000 bytes)
disk size: 146G
cluster_size: 65536
backing file: /xyz.qcow2
backing file format: qcow2
Format specific information:
compat: 0.10
第二台机器(kvm_2
)使用fallocate
工具进行了搁置。
有人能解释其中的区别吗?这两种配置在性能上有什么不同?
这对qcow2
格式重要吗?raw
格式如何?性能差异的根本原因是什么(除非存在)