On 6/6/19 8:48 AM, Vladimir Sementsov-Ogievskiy wrote: > Hi all! > > Here is small new io API: blk_co_pcache, which does copy-on-read without > extra buffer for read data. This means that only parts that needs COR > will be actually read and only corresponding buffers allocated, no more. > > This allows to improve a bit block-stream and NBD_CMD_CACHE
I'd really like to see qemu-io gain access to calling this command, so that we can add iotests coverage of this new feature. Note that the in-development libnbd (https://github.com/libguestfs/libnbd/commits/master) is also usable as an NBD client that can drive NBD_CMD_CACHE, although it's still new enough that we probably don't want to rely on it being available yet. -- Eric Blake, Principal Software Engineer Red Hat, Inc. +1-919-301-3226 Virtualization: qemu.org | libvirt.org
signature.asc
Description: OpenPGP digital signature
