On Wed, Oct 28, 2020 at 10:53:20AM +0200, Vasyl Vavrychuk wrote: > Thanks for replies about my problem. It is actually a practical one... > > I need to compile Yocto BSP which builds only under older > distributions. For convenience I have established a Vagrant virtual > machine which uses NFS to share workspace with the host machine. > > Now coming back to hardlinking symlinks. > > Yocto build system uses hardlinks to prepare sysroot for packages, and > symlinks are part of that sysroot provided by other packages. For what it's worth, I can't reproduce the problem, linking a symlink works fine for me. What's your server? (OS, version, exported filesystem?) --b. > > On Tue, Oct 27, 2020 at 10:03 PM Patrick Goetz <pgoetz@xxxxxxxxxxxxxxx> wrote: > > > > > > > > On 10/27/20 12:12 PM, J. Bruce Fields wrote: > > > On Fri, Oct 23, 2020 at 01:13:02PM +0300, Vasyl Vavrychuk wrote: > > >> I have found that hard links for regular files works well for me over NFS: > > >> > > >> $ touch bar > > >> $ ln bar tata > > >> > > >> But if I try to make hard link for symlink, then it fails: > > >> > > >> $ ln -s foo bar > > >> $ ln bar tata > > >> ln: failed to create hard link 'tata' => 'bar': Operation not permitted > > > > > > Huh. I'm not sure I even realized it was possible to hardlink symlinks. > > > Makes sense, I guess. > > > > What's even the use case for hard linking a symlink? That sounds like > > asking for trouble... > > > > > > > > > > I think my first step debugging this would be to watch wireshark while > > > attempting the "ln", and see what happens. That should tell us whether > > > it's the client or server that's failing the operation. > > > > > > --b. > > > > > >> > > >> I am using NFSv4 with Vagrant, here is mount entry: > > >> > > >> 172.28.128.1:PATH on /vagrant type nfs4 > > >> (rw,relatime,vers=4.0,rsize=1048576,wsize=1048576,namlen=255,hard,proto=tcp,port=0,timeo=600,retrans=2,sec=sys,clientaddr=IP,local_lock=none,addr=IP) > > >> > > >> I have also verified that rpc-statd is running on host. > > >> > > >> Host machine is Ubuntu 18.04 with NFS packages version 1:1.3.4-2.1ubuntu5.3. > > >> > > >> Will appreciate help on this. > > >> > > >> Thanks, > > >> Vasyl
