duplicate extents SMB3 fcntl and cp --reflink from cifs.ko

Steve French smfrench at gmail.com
Mon May 16 16:54:21 UTC 2016

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I just verified that cp --reflink (which for cifs.ko smb3 mounts
invokes the DUPLICATE_EXTENTS SMB3 fcntl) works to current Windows
Server 2016 (TP5) as long as the target share is on an REFS partition
(not NTFS).

Very cool - even faster than CopyChunk for server side copy.

-- 
Thanks,

Steve

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