Re: [Qemu-devel] [PATCHv2] block: add native support for NFS

[Orit Wasserman <owasserm@redhat.com>]

On 12/18/2013 12:18 PM, Daniel P. Berrange wrote:
> On Wed, Dec 18, 2013 at 12:00:03PM +0200, Orit Wasserman wrote:
>> On 12/18/2013 01:03 AM, Peter Lieven wrote:
>>>
>>>
>>>> Am 17.12.2013 um 18:32 schrieb "Daniel P. Berrange" <berrange@redhat.com>:
>>>>
>>>>> On Tue, Dec 17, 2013 at 10:15:25AM +0100, Peter Lieven wrote:
>>>>> This patch adds native support for accessing images on NFS shares without
>>>>> the requirement to actually mount the entire NFS share on the host.
>>>>>
>>>>> NFS Images can simply be specified by an url of the form:
>>>>> nfs://<host>/<export>/<filename>
>>>>>
>>>>> For example:
>>>>> qemu-img create -f qcow2 nfs://10.0.0.1/qemu-images/test.qcow2
>>>>
>>>> Does it support other config tunables, eg specifying which
>>>> NFS version to use 2/3/4 ? If so will they be available as
>>>> URI parameters in the obvious manner ?
>>>
>>> currently only v3 is supported by libnfs. what other tunables would you like to see?
>>>
>>
>> For live migration we need the sync option (async ignores O_SYNC and O_DIRECT sadly),
>> will it be supported? or will it be the default?
>
> Since this is bypassing the client kernel FS I/O layer question around
> support of things like O_SYNC/O_DIRECT are not applicable.
>

so no live migration support?
  
> Daniel
>