Re: [Qemu-block] [Nbd] [Qemu-devel] How to online resize qemu disk with nbd protocol?

[Alex Bligh]

> On 12 Jan 2017, at 14:43, Eric Blake <address@hidden> wrote:
> 
> That's because the NBD protocol lacks a resize command.  You'd have to
> first get that proposed as an NBD extension before qemu could support it.

Actually the NBD protocol lacks a 'make a disk with size X' command,
let alone a resize command. The size of an NBD disk is (currently)
entirely in the hands of the server. What I think we'd really need
would be a 'reread size' command, and have the server capable of
supporting resizing. That would then work for readonly images too.

--
Alex Bligh

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