Although the protocol allows for it, the Linux NFS server code doesn't support reflink-like functionality yet. It's been added to by TODO list.. Signed-off-by: Christoph Hellwig <hch@xxxxxx> --- fs/xfs/xfs_pnfs.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/fs/xfs/xfs_pnfs.c b/fs/xfs/xfs_pnfs.c index ade236e..9708fef 100644 --- a/fs/xfs/xfs_pnfs.c +++ b/fs/xfs/xfs_pnfs.c @@ -139,6 +139,13 @@ xfs_fs_map_blocks( return -ENXIO; /* + * The pNFS block layout spec actually supports reflink like + * functionality, but the Linux pNFS server doesn't implement it yet. + */ + if (!xfs_is_reflink_inode(ip)) + return -ENXIO; + + /* * Lock out any other I/O before we flush and invalidate the pagecache, * and then hand out a layout to the remote system. This is very * similar to direct I/O, except that the synchronization is much more -- 2.1.4 _______________________________________________ xfs mailing list xfs@xxxxxxxxxxx http://oss.sgi.com/mailman/listinfo/xfs
