From: Eric Blake <eblake@redhat.com>
To: Fam Zheng <famz@redhat.com>, qemu-devel@nongnu.org
Cc: Kevin Wolf <kwolf@redhat.com>, Stefan Hajnoczi <stefanha@redhat.com>
Subject: Re: [Qemu-devel] [PATCH] block: Introduce "null" driver
Date: Wed, 27 Aug 2014 06:49:10 -0600 [thread overview]
Message-ID: <53FDD3C6.3050708@redhat.com> (raw)
In-Reply-To: <1409120576-5726-1-git-send-email-famz@redhat.com>
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On 08/27/2014 12:22 AM, Fam Zheng wrote:
> This is an analogue to Linux null_blk. It can be used for testing block
> device emulation and general block layer functionalities such as
> coroutines and throttling, where disk IO is not necessary or wanted.
>
> Signed-off-by: Fam Zheng <famz@redhat.com>
> ---
> block/Makefile.objs | 1 +
> block/null.c | 172 ++++++++++++++++++++++++++++++++++++++++++++++++++++
> 2 files changed, 173 insertions(+)
> create mode 100644 block/null.c
Worth also adding it to BlockdevOptions in qapi/block-core.json to allow
hotplug of this driver? (Not that libvirt will ever hotplug one, but I
really want to move towards being feature-complete on letting QMP drive
all block types)
--
Eric Blake eblake redhat com +1-919-301-3266
Libvirt virtualization library http://libvirt.org
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next prev parent reply other threads:[~2014-08-27 12:49 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-08-27 6:22 [Qemu-devel] [PATCH] block: Introduce "null" driver Fam Zheng
2014-08-27 12:49 ` Eric Blake [this message]
2014-08-27 13:27 ` Markus Armbruster
2014-08-27 14:33 ` Benoît Canet
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