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Re: [Qemu-block] [RFC] Making 'block-stream', and 'block-commit' accept

From: Alberto Garcia
Subject: Re: [Qemu-block] [RFC] Making 'block-stream', and 'block-commit' accept node-name
Date: Tue, 30 May 2017 16:53:23 +0200
User-agent: Notmuch/0.18.2 (http://notmuchmail.org) Emacs/24.4.1 (i586-pc-linux-gnu)

On Mon 29 May 2017 09:03:22 PM CEST, Kashyap Chamarthy wrote:

> Observe the following ('qmp-shell', for brevity) invocation of the
> four major types (stream, commit, mirror, backup) of live block
> operations:
>     (QEMU) block-stream device=node-D base=a.qcow2 job-id=job-block-stream
>     (QEMU) block-commit device=node-D base=a.qcow2 top=b.qcow2 
> job-id=job-block-commit
>     (QEMU) drive-mirror device=node-D target=e.qcow2 sync=full 
> job-id=job-drive-mirror
>     (QEMU) drive-backup device=node-D sync=full target=e.qcow2 
> job-id=job-drive-backup
>     (QEMU) blockdev-backup device=node-B target=node-E sync=full 
> job-id=job-blockdev-backup
>     (QEMU) blockdev-mirror device=node-D target=node-E sync=full 
> job-id=job-blockdev-mirror
> While we have `blockdev-{mirror, backup}` as 'node-name'-alternatives
> for `drive-{mirror, backup}`, as the eagle-eyed will, the
> `block-stream` and `block-commit` commands still operate on file names
> for parameters 'base' and 'top'.

block-stream does accept a node name for the top and base images (see
554b614765090f47d and 312fe09cc8af86c).

block-commit hasn't changed, but it should be possible to follow a
similar approach.


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