On 19/07/2015 10:12, Taeha Kim wrote: > $ ./qemu/qemu-img resize 100G.qcow2 200G > Image resized. > > > $ ./qemu/qemu-img check 100G.qcow2 > No errors were found on the image. > 1638400/3276800 = 50.00% allocated, 0.00% fragmented, 0.00% compressed > clusters > Image end offset: 107390894080
You are getting a large qcow2 image because you have specified metadata preallocation. However you can see from "qemu-img check" that the preallocation is lost even with your patch. I think if you try resizing to 102408M for example (very little above the previous size) "qemu-img check" will show corruption after the resize. Paolo
