Public bug reported:
Hi,
this affects version signature Ubuntu 4.4.0-21.37-generic 4.4.6 (as
reported by initramfs), ARCH: amd64
I have installed ubuntu 16.04 via debootstrap in a chroot environment. I
can PXE boot this environment via NFS using the following Kernel
parameters without a problem:
root=/dev/nfs initrd=initrd.gz nfsroot=10.23.23.1:/mnt/lab ip=dhcp ro
(initramfs generated with 'mkinitramfs -v -o ~/initrd.img
4.4.0-21-generic'. I can attach the whole initramfs.conf, if desired)
As soon as I enable overlayroot (using tmpfs as overlay target), the
machine hangs at boot.
In order to debug this issue, I have appended the
break=init
kernel parameter.
In busybox I can then see that the overlay is mounted. However, if I try to
chroot into it, I get a stacktrace (see attached screenshot).
The overlay seems to be readable, but not writeable.
('touch file' works, but there is nothing there afterwards)
`apport-collect` is not available in initramfs, therefore no log could
be attached.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: Confirmed
** Attachment added: "Screen Shot 2017-03-22 at 16.26.52.png"
https://bugs.launchpad.net/bugs/1675086/+attachment/4842414/+files/Screen%20Shot%202017-03-22%20at%2016.26.52.png
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https://bugs.launchpad.net/bugs/1675086
Title:
Kernel Bug when using nfsroot + overlayroot at the same time
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