Using NFS v4 when mounting the nfsroot

[Andrew Ruthven]

That's awesome!

On Wed, 2019-09-18 at 17:12 +0200, Thomas Lange wrote:
> Since a long time, I've tried using NFS v4 for the nfsroot. This did
> not worked since FAI uses overlayfs for making the read-only nfsroot
> writeable. Therefore FAI force a NFS v3 mount for the nfsroot which
> works nicely.
> 
> But now it's possible to use NFSv4. I put some effort in debugging
> the
> setup, and asked the overlayfs maintainers for help. It's a
> complicated mixture of NFS and acl support (POSIX and nfs4 acl) and
> what overlayfs expects from the filesystems in respect to certain
> xattr. There may be an improvement inside overlayfs in the future.
> But
> currently we can use NFS v4 for the FAI nfsroot with a very simple
> change. Just disable acl for the exported filesystem on the FAI
> server
> which holds /srv/fai/nfsroot. More is described here:
> 
> http://fai-project.org/fai-guide/#_a_id_nfsv4_a_how_to_use_nfs_v4_with_the_nfsroot
-- 
Andrew Ruthven, Wellington, New Zealand
andrew at etc.gen.nz              | linux.conf.au 2020, Gold Coast, AU
Catalyst Cloud:                |    https://lca2020.linux.org.au/
   https://catalystcloud.nz    |