On 03/28/2014 08:46 AM, Peter Lieven wrote: > this patch tries to optimize zero write requests > by automatically using bdrv_write_zeroes if it is > supported by the format. > > This significantly speeds up file system initialization and > should speed zero write test used to test backend storage > performance. >
> > block.c | 39 ++++++++++++++++++++++++++++++++++++++- > include/block/block_int.h | 12 ++++++++++++ > include/qemu-common.h | 1 + > qemu-options.hx | 6 ++++++ > util/iov.c | 21 +++++++++++++++++++++ > 5 files changed, 78 insertions(+), 1 deletion(-) > Is there any QMP query- command that can expose the current setting of this value? Is this something worth making changeable during runtime? Is it something that can be requested per-disk at hotplug time? -- Eric Blake eblake redhat com +1-919-301-3266 Libvirt virtualization library http://libvirt.org
signature.asc
Description: OpenPGP digital signature
