On Mon, Apr 17, 2017 at 11:49 AM, Fam Zheng <f...@redhat.com> wrote: > On Fri, 04/14 14:30, 858585 jemmy wrote: >> Do you know some other format which have very small cluster size? > > 64k is the default cluster size for qcow2 but it can be configured at image > creation time, as 512 bytes, for example: > > $ qemu-img create -f qcow2 test.qcow2 -o cluster_size=512 1G
Thanks, i will test the performance again. > > Fam
