So far, there have been two three versions The next 4 bytes contain the format version used by the file.The first 4 bytes contain the characters 'Q', 'F', 'I' followed.$> qemu-img convert test.qcow2 -O raw test.imgĮach QCOW2 file begins with a header, in big endian format, as follows: $> qemu-img create -f qcow2 test.qcow2 4Gįormating 'test.qcow2', fmt=qcow2, size=4194304 kB The qemu-img command is the most common way of manipulating these Snapshot support, where the image can contain multiple snapshots.Copy-on-write support, where the image only represents changes made.Smaller file size, even on filesystems which don't support.Benefits it offers over using raw dump It is a representation of a fixed sizeīlock device in a file.
The QCOW image format is one of the disk image formats supported by # Note: use qemu-img, not virt-install, to create the image file, lest you get an obsolete version Virt-install -network bridge:br0 -name vm1 -ram=1024 -vcpus=2 -disk path=vm1.qcow2,format=qcow2 -location=SL-7-x86_64-DVD.iso -extra-args="console=tty0 console=ttyS0,115200" # Create 90 GB virtual machine image file:
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