On 17.08.2017 12:15, Pavel Butsykin wrote:
This patch add shrinking of the image file for qcow2. As a result, this allows us to reduce the virtual image size and free up space on the disk without copying the image. Image can be fragmented and shrink is done by punching holes in the image file.# ./qemu-img create -f qcow2 image.qcow2 4G Formatting 'image.qcow2', fmt=qcow2 size=4294967296 encryption=off cluster_size=65536 lazy_refcounts=off refcount_bits=16 # ./qemu-io -c "write -P 0x22 0 1G" image.qcow2 wrote 1073741824/1073741824 bytes at offset 0 1 GiB, 1 ops; 0:00:04.59 (222.886 MiB/sec and 0.2177 ops/sec) # ./qemu-img resize image.qcow2 512M warning: qemu-img: Shrinking an image will delete all data beyond the shrunken image's end. Before performing such an operation, make sure there is no important data there. error: qemu-img: Use the --shrink option to perform a shrink operation. # ./qemu-img resize --shrink image.qcow2 128M Image resized. # ./qemu-img info image.qcow2 image: image.qcow2 file format: qcow2 virtual size: 128M (134217728 bytes) disk size: 128M cluster_size: 65536 Format specific information: compat: 1.1 lazy refcounts: false refcount bits: 16 corrupt: false # du -h image.qcow2 129M image.qcow2
ping Hi guys, I would like to ask is there any plans to take this small patch series? :) And thanks for the review.
