On 8/16/22 12:59 AM, Lin Ma wrote: > Properly setting the metadata cache size can provide better performance > in case of using big qcow2 images. > > This patch introduces two driver options: > * driver.metadata_cache.max_size > * driver.metadata_cache.max_size.unit > > E.g. --disk ...,driver.type=qcow2,\ > driver.metadata_cache.max_size=2,\ > driver.metadata_cache.max_size.unit=MiB > > BTW, Metadata cache size control is currently supported only for qcow2. > Regarding how to properly caluclate the cache size of qcow2, Please refer > to qemu's documentation. > Thanks, pushed now. - Cole
