On 2015-09-02, andrea biancalana wrote:
> LTSP server on Debian Stable exporting NFS Debian testing with kernel 4.1.0:
>
> fat clients doesn't boot with message: "failed to find cpu0 device node"

Not sure where *that* message is coming from; might be a red herring
unrelated to the real issue...


> Is it a known problem?

I think the problem is that "overlay" fs doesn't support NFS as a
backend. Works fine with NBD:

  https://bugs.debian.org/786925

NFS support with "overlay" fs was partially fixed in a patched linux
4.1.x series in Debian, and in upstream 4.2.x, but I haven't yet seen a
working fix...


It does interestingly work with a squashfs image exported over NFS, but
that requires fixes to initramfs-tools to support loopback mounts:

  https://bugs.debian.org/468114


> Is there some solution?

As a workaround, you could try compiling aufs modules for your kernel,
or switching to an older kernel with aufs support...


live well,
  vagrant

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