Re: [PATCH 1/1] [RFC] 64bit copy_file_range system call

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On Tue, Jun 20, 2017 at 3:33 PM, Chuck Lever <chuck.lever@xxxxxxxxxx> wrote:
>
>> On Jun 19, 2017, at 3:39 PM, Christoph Hellwig <hch@xxxxxxxxxxxxx> wrote:
>>
>> On Mon, Jun 19, 2017 at 02:34:58PM -0400, Olga Kornievskaia wrote:
>>> Yes NFS community does need one for doing a server-to-server copy
>>> (performance) feature.
>>
>> s/NFS community/NetApp/
>
> I don't have an opinion on the API details, but Oracle is interested
> in server-to-server copy, especially if there is an implementation
> of it in the Linux NFS server.

The proposed patch set is the linux client AND linux server. We need
removal of the VFS cross-device check on both side (client and
destination server) to make the server-to-server copy work. On the
server side, we also call vfs_copy_file_range() that (when check is
removed) ends up reading from the NFS source file and writing to the
local file system.
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