problem about qcow2-Collection of common programming errors

• 
  bmaeser
  kvm-virtualization qemu disk-images qcow2
  we are using kvm/qemu with qcow2-images for our virtual machines.qcow2 has this nice feature where the image file only allocates the actually needed space by the virtual-machine. but how do i shrink back the image file, if the virtual machine’s allocated space gets smaller?example:1.) i create a new image with qcow2 format, size 100GB2.) i use this image to install ubuntu. installation needs about 10 gb, the image-file grows up to about 10GB. nothing unexpected so far.3.) i fill up the image wit
• 
  Gregg Leventhal
  kvm-virtualization lvm snapshot qcow2
  I have KVM running and need to convert some qcow2 disk images from running guests into vmdk format. Is it safe to take an LVM snapshot of the logical volume that the qcow2 file resides on, mount it, and then run qemu-img convert on the mounted snapshot volume? The destination for the converted file will either be an attached USB drive or an NFS mount. I want to be sure there is no risk to the original qcow2 file doing it this way. The alternative would be to make a copy to the destination fi

Web site is in building

I discovery a place to host code、demo、 blog and websites.
Site access is fast but not money