[Libguestfs] [PATCH v4 0/3] v2v: Add -o rhv-upload output mode.

[Eric Blake]

On 03/14/2018 04:07 PM, Nir Soffer wrote:

> 
> What is the use case for flushing ranges? I guess we will have one
> or few flushes per images.
> 
> Looking at sync_file_range(2), it does not seem to be a safe way to
> flush:

Wow - I didn't know there was a syscall for flushing ranges.  Even if it 
is unusable for our purposes given the warnings in its documentation, 
and unneeded since neither qemu nor NBD flush by ranges.

-- 
Eric Blake, Principal Software Engineer
Red Hat, Inc.           +1-919-301-3266
Virtualization:  qemu.org | libvirt.org