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发布于 2024-06-04 / 0 阅读
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qemu-img qcow2转换

qemu-img allows you to create, convert and modify images offline. It can handle all image formats supported by QEMU.

qcow2

qemu最通用的镜像文件格式,在文件系统上能够占用更小的存储空间,并且具备可选的一些配置项,比如AES加密、zlib压缩、快照等。

qemu-img convert -t none -f qcow2 -O host_device input_disk_image output_host_device

要使用 qemu-img 将磁盘映像文件从一种格式转换为另一种格式,可以指定输入格式( -f )和输出格式( -O )以及源和目标位置. 在本例中,您希望将磁盘映像转换为 host_device 格式

 - `-f qcow2`: Specifies the input format as qcow2.
 - `-O host_device`: Specifies the output format as host_device.
 - `input_disk_image`: Path to the input disk image file you want to convert.
 - `output_host_device`: Path to the output host device file.
-t 无压缩类型

$ qemu-img info Win2k.img 
image: Win2k.img
file format: qcow2
virtual size: 30 GiB (32212254720 bytes)
disk size: 914 MiB
cluster_size: 65536
Format specific information:
    compat: 1.1
    lazy refcounts: false
    refcount bits: 16
    corrupt: false

file format

blkdebug blklogwrites blkreplay blkverify bochs cloop 
copy-on-read dmg file ftp ftps host_cdrom host_device 
http https iscsi iser luks nbd null-aio null-co nvme 
parallels qcow qcow2 qed quorum raw rbd replication 
sheepdog ssh throttle vdi vhdx vmdk vpc vvfat


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