Re: [Qemu-block] [Qemu-devel] [PATCH] nbd/server: Honor FUA request on NBD_CMD_TRIM

[Eric Blake]

On 03/07/2018 04:57 PM, Eric Blake wrote:
> The NBD spec states that since trim requests can affect disk contents,
> then they should allow for FUA semantics just like writes for ensuring
> the disk has settled before returning.  As bdrv_[co_]pdiscard() does
> not (yet?) support a flags argument, we can't pass FUA down the block
> layer stack, and must therefore emulate it with a flush at the NBD
> layer.
>
> Signed-off-by: Eric Blake <address@hidden>
> ---

Thanks; queued to my NBD tree.

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