From: Markus Armbruster <armbru@redhat.com>
To: Eric Blake <eblake@redhat.com>
Cc: Kevin Wolf <kwolf@redhat.com>, Fam Zheng <famz@redhat.com>,
qemu-devel@nongnu.org, Stefan Hajnoczi <stefanha@redhat.com>
Subject: Re: [Qemu-devel] [PATCH] block: Introduce "null" driver
Date: Wed, 27 Aug 2014 15:27:48 +0200 [thread overview]
Message-ID: <87r4026p0r.fsf@blackfin.pond.sub.org> (raw)
In-Reply-To: <53FDD3C6.3050708@redhat.com> (Eric Blake's message of "Wed, 27 Aug 2014 06:49:10 -0600")
Eric Blake <eblake@redhat.com> writes:
> 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)
I'd support a policy of "no new block drivers outside QAPI".
next prev parent reply other threads:[~2014-08-27 13:28 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
2014-08-27 13:27 ` Markus Armbruster [this message]
2014-08-27 14:33 ` Benoît Canet
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