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Re: [Qemu-block] [PATCH v3 01/11] block: Accept node-name for block-stre
From: |
Eric Blake |
Subject: |
Re: [Qemu-block] [PATCH v3 01/11] block: Accept node-name for block-stream |
Date: |
Fri, 8 Jul 2016 08:30:01 -0600 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.3.0 |
On 07/08/2016 04:01 AM, Kevin Wolf wrote:
> Am 08.07.2016 um 00:45 hat Eric Blake geschrieben:
>> On 07/07/2016 06:11 AM, Kevin Wolf wrote:
>>> In order to remove the necessity to use BlockBackend names in the
>>> external API, we want to allow node-names everywhere. This converts
>>> block-stream to accept a node-name without lifting the restriction that
>>> we're operating at a root node.
>>>
>>> In case of an invalid device name, the command returns the GenericError
>>> error class now instead of DeviceNotFound, because this is what
>>> qmp_get_root_bs() returns.
>>>
>>> Signed-off-by: Kevin Wolf <address@hidden>
>>> ---
>>> blockdev.c | 32 ++++++++++++++++++++------------
>>> qapi/block-core.json | 5 +----
>>> qmp-commands.hx | 2 +-
>>> tests/qemu-iotests/030 | 2 +-
>>> 4 files changed, 23 insertions(+), 18 deletions(-)
>>>
>>
>> The interface change looks okay; but due to Berto's comments, I'm not
>> sure it is worth giving R-b yet if you plan on changing the check for
>> whether a node name properly qualifies as a root name.
>
> Initially I intended to address the comment with some change, but since
> I realised that you already can put a BB everywhere and therefore this
> doesn't protect anything against intentional actions anyway, I'm not so
> sure any more.
>
> Do you have an opintion on this? More input would be appreciated.
I still need to re-read the other sub-thread closely, but yes, I'll try
to chime in after I've had a chance to think about implications.
--
Eric Blake eblake redhat com +1-919-301-3266
Libvirt virtualization library http://libvirt.org
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[Qemu-block] [PATCH v3 02/11] block: Accept node-name for block-commit, Kevin Wolf, 2016/07/07
[Qemu-block] [PATCH v3 03/11] block: Accept node-name for blockdev-backup, Kevin Wolf, 2016/07/07
[Qemu-block] [PATCH v3 04/11] block: Accept node-name for blockdev-mirror, Kevin Wolf, 2016/07/07
[Qemu-block] [PATCH v3 05/11] block: Accept node-name for blockdev-snapshot-delete-internal-sync, Kevin Wolf, 2016/07/07
[Qemu-block] [PATCH v3 06/11] block: Accept node-name for blockdev-snapshot-internal-sync, Kevin Wolf, 2016/07/07
[Qemu-block] [PATCH v3 07/11] block: Accept node-name for change-backing-file, Kevin Wolf, 2016/07/07
[Qemu-block] [PATCH v3 08/11] block: Accept node-name for drive-backup, Kevin Wolf, 2016/07/07
[Qemu-block] [PATCH v3 09/11] block: Accept node-name for drive-mirror, Kevin Wolf, 2016/07/07
[Qemu-block] [PATCH v3 10/11] nbd-server: Use a separate BlockBackend, Kevin Wolf, 2016/07/07