Transfering extended attributes in the "system" namespace

Philipp Tölke philipp at
Tue Jul 29 00:27:50 MDT 2014

Dear all,

nfs4-ACLs are exposed to userspace as an extended attribute 
"system.nfs4_acl" in Linux.

I need to copy these ACLs from one NFS-Server to another. I have found 
that in xattrs.c rsync filters all extended attributes from the 
namespace "system" and does not transfer them.

Question 1: Is it reasonably save to patch rsync and transfer them 
anyways? I have tried it, it works. :-)

Question 2: If is is reasonable and save, is there interest in a patch 
to create a option to not ignore the "system" namespace?


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