On 8/26/20 9:56 AM, Peter Krempa wrote:
Cluster size may have performatnce implications. Propagate the cluster size used by the original image to any copy or overlay.Peter Krempa (3): qemu: monitor: Detect image cluster size from 'query-named-block-nodes' qemu: block: Allow specifying cluster size when using 'blockdev-create' qemuBlockStorageSourceCreateDetectSize: Propagate cluster size for 'qcow2'
It's not as flexible as allowing the user to customize sizes, but it definitely makes sense and is a sane heuristic, better than adccidentally creating an overlay with 64k clusters atop a base image with 1M clusters.
Series: Reviewed-by: Eric Blake <ebl...@redhat.com> -- Eric Blake, Principal Software Engineer Red Hat, Inc. +1-919-301-3226 Virtualization: qemu.org | libvirt.org
