[Ltsp-discuss] neither overlayfs nor aufs

[Helmut Lichtenberg]

Hi,
I updated my nbd-kernel image (Debian Jessie) to a recent kernel
(4.2.0-0.bpo.1-586) from backports.

The client stops at booting and prints out:

Could not load neither overlayfs nor aufs

aufs seems to be absent (no module under /lib/modules/$(uname -r) and the
overlayfs module is called overlay.ko .

Will aufs be replaced by overlay and why won't load the overlay module?

TIA
Helmut

[Vagrant Cascadian]

Post by Helmut Lichtenberg
I updated my nbd-kernel image (Debian Jessie) to a recent kernel
(4.2.0-0.bpo.1-586) from backports.
Could not load neither overlayfs nor aufs

You need a newer version of LTSP to work with newer kernels. I've been
planning on uploading newer versions to backports.debian.org, but have
been waiting for upload rights. I'll try to get it updated soon.

Post by Helmut Lichtenberg
aufs seems to be absent (no module under /lib/modules/$(uname -r) and the
overlayfs module is called overlay.ko .
Will aufs be replaced by overlay and why won't load the overlay module?

Yes, aufs is no longer shipped in Debian kernels, and overlay FS is
named "overlay" in mainline linux and the Debian kernels, and requires
slightly different syntax from "overlayfs".

You *might* be able to build aufs out-of-tree and use that. It would be
good to know if that's an option.


Unfortunately, overlay FS in mainline linux doesn't properly support NFS
as a backend, so the newer versions of LTSP in Debian switched to NBD by
default:

https://bugs.debian.org/786925

Although it sounds like you're using NBD anyways, so maybe that's a
benefit!


live well,
vagrant

[Helmut Lichtenberg]

Post by Vagrant Cascadian

Post by Helmut Lichtenberg
I updated my nbd-kernel image (Debian Jessie) to a recent kernel
(4.2.0-0.bpo.1-586) from backports.
Could not load neither overlayfs nor aufs

You need a newer version of LTSP to work with newer kernels. I've been
planning on uploading newer versions to backports.debian.org, but have
been waiting for upload rights. I'll try to get it updated soon.

Hi Vagrant,
thanks for your clarification.
There's no need to hurry from my side. I just played around to keep my
machines up to date.

I appreciate you dedication very much.

Have a nice day
Helmut