Hello,As far as I saw QEMU/KVM supports the trim command on IDE/SATA devices and the UNMAP command on SCSI devices/disks (thanks Paolo Bonzini). Will the qcow2 format (or other formats) use this information and also release the blocks for thin provisioning to save disk space on filesystems?
VirtualBox also has such a feature in the new beta version: http://www.fb-developers.info/blog/2012/virtualbox-v4-2-is-coming/ Thnx. Ciao, Gerhard -- http://www.wiesinger.com/
